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73721e3e 1<!DOCTYPE html>
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2<html>
3<!-- SECTION: Programming -->
4 <head>
5 <title>CUPS Programming Manual</title>
6 <meta name="keywords" content="Programming">
7 <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
73721e3e 8 <meta name="creator" content="codedoc v3.1">
798d6e29 9 <meta name="author" content="Michael R Sweet">
73721e3e 10 <meta name="copyright" content="Copyright &#xa9; 2007-2019 by Apple Inc. All Rights Reserved.">
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173 </head>
174 <body>
175 <h1 class="title">CUPS Programming Manual</h1>
176 <p>Michael R Sweet</p>
73721e3e 177 <p>Copyright &#xa9; 2007-2019 by Apple Inc. All Rights Reserved.</p>
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178 <div class="contents">
179 <h2 class="title">Contents</h2>
180 <ul class="contents">
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181 <li><a href="#introduction">Introduction</a><ul class="subcontents">
182 <li><a href="#guidelines">Guidelines</a></li>
183 <li><a href="#terms-used-in-this-document">Terms Used in This Document</a></li>
184 <li><a href="#compiling-programs-that-use-the-cups-api">Compiling Programs That Use the CUPS API</a></li>
798d6e29 185 </ul></li>
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186 <li><a href="#working-with-destinations">Working with Destinations</a><ul class="subcontents">
187 <li><a href="#finding-available-destinations">Finding Available Destinations</a></li>
188 <li><a href="#basic-destination-information">Basic Destination Information</a></li>
189 <li><a href="#detailed-destination-information">Detailed Destination Information</a></li>
190 <li><a href="#submitting-a-print-job">Submitting a Print Job</a></li>
798d6e29 191 </ul></li>
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192 <li><a href="#sending-ipp-requests">Sending IPP Requests</a><ul class="subcontents">
193 <li><a href="#connecting-to-the-scheduler-or-printer">Connecting to the Scheduler or Printer</a></li>
194 <li><a href="#creating-an-ipp-request">Creating an IPP Request</a></li>
195 <li><a href="#sending-the-ipp-request">Sending the IPP Request</a></li>
196 <li><a href="#processing-the-ipp-response">Processing the IPP Response</a></li>
197 <li><a href="#authentication">Authentication</a></li>
198 </ul></li>
798d6e29 199 <li><a href="#FUNCTIONS">Functions</a><ul class="subcontents">
73721e3e 200 <li><a href="#CF_OPTIONS">CF_OPTIONS</a></li>
798d6e29 201 <li><a href="#cupsAddDest">cupsAddDest</a></li>
63b75fbe 202 <li><a href="#cupsAddDestMediaOptions">cupsAddDestMediaOptions</a></li>
53af7f21 203 <li><a href="#cupsAddIntegerOption">cupsAddIntegerOption</a></li>
798d6e29 204 <li><a href="#cupsAddOption">cupsAddOption</a></li>
798d6e29 205 <li><a href="#cupsCancelDestJob">cupsCancelDestJob</a></li>
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206 <li><a href="#cupsCheckDestSupported">cupsCheckDestSupported</a></li>
207 <li><a href="#cupsCloseDestJob">cupsCloseDestJob</a></li>
208 <li><a href="#cupsConnectDest">cupsConnectDest</a></li>
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209 <li><a href="#cupsCopyDest">cupsCopyDest</a></li>
210 <li><a href="#cupsCopyDestConflicts">cupsCopyDestConflicts</a></li>
211 <li><a href="#cupsCopyDestInfo">cupsCopyDestInfo</a></li>
212 <li><a href="#cupsCreateDestJob">cupsCreateDestJob</a></li>
798d6e29 213 <li><a href="#cupsDoAuthentication">cupsDoAuthentication</a></li>
ddf2ec73 214 <li><a href="#cupsEncodeOption">cupsEncodeOption</a></li>
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215 <li><a href="#cupsEncodeOptions">cupsEncodeOptions</a></li>
216 <li><a href="#cupsEncodeOptions2">cupsEncodeOptions2</a></li>
217 <li><a href="#cupsEncryption">cupsEncryption</a></li>
218 <li><a href="#cupsEnumDests">cupsEnumDests</a></li>
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219 <li><a href="#cupsFindDestDefault">cupsFindDestDefault</a></li>
220 <li><a href="#cupsFindDestReady">cupsFindDestReady</a></li>
221 <li><a href="#cupsFindDestSupported">cupsFindDestSupported</a></li>
222 <li><a href="#cupsFinishDestDocument">cupsFinishDestDocument</a></li>
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223 <li><a href="#cupsFreeDestInfo">cupsFreeDestInfo</a></li>
224 <li><a href="#cupsFreeDests">cupsFreeDests</a></li>
225 <li><a href="#cupsFreeJobs">cupsFreeJobs</a></li>
226 <li><a href="#cupsFreeOptions">cupsFreeOptions</a></li>
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227 <li><a href="#cupsGetDest">cupsGetDest</a></li>
228 <li><a href="#cupsGetDestMediaByIndex">cupsGetDestMediaByIndex</a></li>
229 <li><a href="#cupsGetDestMediaByName">cupsGetDestMediaByName</a></li>
230 <li><a href="#cupsGetDestMediaBySize">cupsGetDestMediaBySize</a></li>
231 <li><a href="#cupsGetDestMediaCount">cupsGetDestMediaCount</a></li>
232 <li><a href="#cupsGetDestMediaDefault">cupsGetDestMediaDefault</a></li>
233 <li><a href="#cupsGetDestWithURI">cupsGetDestWithURI</a></li>
98d88c8d 234 <li><a href="#cupsGetDests2">cupsGetDests2</a></li>
53af7f21 235 <li><a href="#cupsGetIntegerOption">cupsGetIntegerOption</a></li>
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236 <li><a href="#cupsGetJobs2">cupsGetJobs2</a></li>
237 <li><a href="#cupsGetNamedDest">cupsGetNamedDest</a></li>
238 <li><a href="#cupsGetOption">cupsGetOption</a></li>
798d6e29 239 <li><a href="#cupsGetPassword2">cupsGetPassword2</a></li>
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240 <li><a href="#cupsLocalizeDestMedia">cupsLocalizeDestMedia</a></li>
241 <li><a href="#cupsLocalizeDestOption">cupsLocalizeDestOption</a></li>
242 <li><a href="#cupsLocalizeDestValue">cupsLocalizeDestValue</a></li>
243 <li><a href="#cupsMakeServerCredentials">cupsMakeServerCredentials</a></li>
798d6e29 244 <li><a href="#cupsParseOptions">cupsParseOptions</a></li>
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245 <li><a href="#cupsRemoveDest">cupsRemoveDest</a></li>
246 <li><a href="#cupsRemoveOption">cupsRemoveOption</a></li>
247 <li><a href="#cupsServer">cupsServer</a></li>
248 <li><a href="#cupsSetClientCertCB">cupsSetClientCertCB</a></li>
249 <li><a href="#cupsSetCredentials">cupsSetCredentials</a></li>
250 <li><a href="#cupsSetDefaultDest">cupsSetDefaultDest</a></li>
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251 <li><a href="#cupsSetDests2">cupsSetDests2</a></li>
252 <li><a href="#cupsSetEncryption">cupsSetEncryption</a></li>
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253 <li><a href="#cupsSetPasswordCB2">cupsSetPasswordCB2</a></li>
254 <li><a href="#cupsSetServer">cupsSetServer</a></li>
255 <li><a href="#cupsSetServerCertCB">cupsSetServerCertCB</a></li>
256 <li><a href="#cupsSetServerCredentials">cupsSetServerCredentials</a></li>
257 <li><a href="#cupsSetUser">cupsSetUser</a></li>
258 <li><a href="#cupsSetUserAgent">cupsSetUserAgent</a></li>
259 <li><a href="#cupsStartDestDocument">cupsStartDestDocument</a></li>
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260 <li><a href="#cupsUser">cupsUser</a></li>
261 <li><a href="#cupsUserAgent">cupsUserAgent</a></li>
262 <li><a href="#httpAcceptConnection">httpAcceptConnection</a></li>
263 <li><a href="#httpAddCredential">httpAddCredential</a></li>
264 <li><a href="#httpAddrAny">httpAddrAny</a></li>
265 <li><a href="#httpAddrClose">httpAddrClose</a></li>
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266 <li><a href="#httpAddrConnect2">httpAddrConnect2</a></li>
267 <li><a href="#httpAddrCopyList">httpAddrCopyList</a></li>
268 <li><a href="#httpAddrEqual">httpAddrEqual</a></li>
269 <li><a href="#httpAddrFamily">httpAddrFamily</a></li>
270 <li><a href="#httpAddrFreeList">httpAddrFreeList</a></li>
271 <li><a href="#httpAddrGetList">httpAddrGetList</a></li>
272 <li><a href="#httpAddrLength">httpAddrLength</a></li>
273 <li><a href="#httpAddrListen">httpAddrListen</a></li>
274 <li><a href="#httpAddrLocalhost">httpAddrLocalhost</a></li>
275 <li><a href="#httpAddrLookup">httpAddrLookup</a></li>
276 <li><a href="#httpAddrPort">httpAddrPort</a></li>
277 <li><a href="#httpAddrString">httpAddrString</a></li>
278 <li><a href="#httpAssembleURI">httpAssembleURI</a></li>
279 <li><a href="#httpAssembleURIf">httpAssembleURIf</a></li>
280 <li><a href="#httpAssembleUUID">httpAssembleUUID</a></li>
281 <li><a href="#httpBlocking">httpBlocking</a></li>
282 <li><a href="#httpCheck">httpCheck</a></li>
283 <li><a href="#httpClearCookie">httpClearCookie</a></li>
284 <li><a href="#httpClearFields">httpClearFields</a></li>
285 <li><a href="#httpClose">httpClose</a></li>
286 <li><a href="#httpCompareCredentials">httpCompareCredentials</a></li>
798d6e29 287 <li><a href="#httpConnect2">httpConnect2</a></li>
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288 <li><a href="#httpCopyCredentials">httpCopyCredentials</a></li>
289 <li><a href="#httpCredentialsAreValidForName">httpCredentialsAreValidForName</a></li>
290 <li><a href="#httpCredentialsGetExpiration">httpCredentialsGetExpiration</a></li>
291 <li><a href="#httpCredentialsGetTrust">httpCredentialsGetTrust</a></li>
292 <li><a href="#httpCredentialsString">httpCredentialsString</a></li>
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293 <li><a href="#httpDecode64_2">httpDecode64_2</a></li>
294 <li><a href="#httpDelete">httpDelete</a></li>
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295 <li><a href="#httpEncode64_2">httpEncode64_2</a></li>
296 <li><a href="#httpEncryption">httpEncryption</a></li>
297 <li><a href="#httpError">httpError</a></li>
298 <li><a href="#httpFieldValue">httpFieldValue</a></li>
299 <li><a href="#httpFlush">httpFlush</a></li>
300 <li><a href="#httpFlushWrite">httpFlushWrite</a></li>
301 <li><a href="#httpFreeCredentials">httpFreeCredentials</a></li>
302 <li><a href="#httpGet">httpGet</a></li>
303 <li><a href="#httpGetActivity">httpGetActivity</a></li>
304 <li><a href="#httpGetAddress">httpGetAddress</a></li>
305 <li><a href="#httpGetAuthString">httpGetAuthString</a></li>
306 <li><a href="#httpGetBlocking">httpGetBlocking</a></li>
307 <li><a href="#httpGetContentEncoding">httpGetContentEncoding</a></li>
308 <li><a href="#httpGetCookie">httpGetCookie</a></li>
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309 <li><a href="#httpGetDateString2">httpGetDateString2</a></li>
310 <li><a href="#httpGetDateTime">httpGetDateTime</a></li>
311 <li><a href="#httpGetEncryption">httpGetEncryption</a></li>
312 <li><a href="#httpGetExpect">httpGetExpect</a></li>
313 <li><a href="#httpGetFd">httpGetFd</a></li>
314 <li><a href="#httpGetField">httpGetField</a></li>
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315 <li><a href="#httpGetHostname">httpGetHostname</a></li>
316 <li><a href="#httpGetKeepAlive">httpGetKeepAlive</a></li>
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317 <li><a href="#httpGetLength2">httpGetLength2</a></li>
318 <li><a href="#httpGetPending">httpGetPending</a></li>
319 <li><a href="#httpGetReady">httpGetReady</a></li>
320 <li><a href="#httpGetRemaining">httpGetRemaining</a></li>
321 <li><a href="#httpGetState">httpGetState</a></li>
322 <li><a href="#httpGetStatus">httpGetStatus</a></li>
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323 <li><a href="#httpGetSubField2">httpGetSubField2</a></li>
324 <li><a href="#httpGetVersion">httpGetVersion</a></li>
325 <li><a href="#httpGets">httpGets</a></li>
326 <li><a href="#httpHead">httpHead</a></li>
327 <li><a href="#httpInitialize">httpInitialize</a></li>
328 <li><a href="#httpIsChunked">httpIsChunked</a></li>
329 <li><a href="#httpIsEncrypted">httpIsEncrypted</a></li>
330 <li><a href="#httpLoadCredentials">httpLoadCredentials</a></li>
331 <li><a href="#httpOptions">httpOptions</a></li>
332 <li><a href="#httpPeek">httpPeek</a></li>
333 <li><a href="#httpPost">httpPost</a></li>
334 <li><a href="#httpPut">httpPut</a></li>
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335 <li><a href="#httpRead2">httpRead2</a></li>
336 <li><a href="#httpReadRequest">httpReadRequest</a></li>
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337 <li><a href="#httpReconnect2">httpReconnect2</a></li>
338 <li><a href="#httpResolveHostname">httpResolveHostname</a></li>
339 <li><a href="#httpSaveCredentials">httpSaveCredentials</a></li>
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340 <li><a href="#httpSeparateURI">httpSeparateURI</a></li>
341 <li><a href="#httpSetAuthString">httpSetAuthString</a></li>
342 <li><a href="#httpSetCookie">httpSetCookie</a></li>
343 <li><a href="#httpSetCredentials">httpSetCredentials</a></li>
344 <li><a href="#httpSetDefaultField">httpSetDefaultField</a></li>
345 <li><a href="#httpSetExpect">httpSetExpect</a></li>
346 <li><a href="#httpSetField">httpSetField</a></li>
347 <li><a href="#httpSetKeepAlive">httpSetKeepAlive</a></li>
348 <li><a href="#httpSetLength">httpSetLength</a></li>
349 <li><a href="#httpSetTimeout">httpSetTimeout</a></li>
350 <li><a href="#httpShutdown">httpShutdown</a></li>
351 <li><a href="#httpStateString">httpStateString</a></li>
352 <li><a href="#httpStatus">httpStatus</a></li>
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353 <li><a href="#httpURIStatusString">httpURIStatusString</a></li>
354 <li><a href="#httpUpdate">httpUpdate</a></li>
355 <li><a href="#httpWait">httpWait</a></li>
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356 <li><a href="#httpWrite2">httpWrite2</a></li>
357 <li><a href="#httpWriteResponse">httpWriteResponse</a></li>
358 <li><a href="#ippAddBoolean">ippAddBoolean</a></li>
359 <li><a href="#ippAddBooleans">ippAddBooleans</a></li>
360 <li><a href="#ippAddCollection">ippAddCollection</a></li>
361 <li><a href="#ippAddCollections">ippAddCollections</a></li>
362 <li><a href="#ippAddDate">ippAddDate</a></li>
363 <li><a href="#ippAddInteger">ippAddInteger</a></li>
364 <li><a href="#ippAddIntegers">ippAddIntegers</a></li>
365 <li><a href="#ippAddOctetString">ippAddOctetString</a></li>
366 <li><a href="#ippAddOutOfBand">ippAddOutOfBand</a></li>
367 <li><a href="#ippAddRange">ippAddRange</a></li>
368 <li><a href="#ippAddRanges">ippAddRanges</a></li>
369 <li><a href="#ippAddResolution">ippAddResolution</a></li>
370 <li><a href="#ippAddResolutions">ippAddResolutions</a></li>
371 <li><a href="#ippAddSeparator">ippAddSeparator</a></li>
372 <li><a href="#ippAddString">ippAddString</a></li>
373 <li><a href="#ippAddStringf">ippAddStringf</a></li>
374 <li><a href="#ippAddStringfv">ippAddStringfv</a></li>
375 <li><a href="#ippAddStrings">ippAddStrings</a></li>
376 <li><a href="#ippAttributeString">ippAttributeString</a></li>
377 <li><a href="#ippContainsInteger">ippContainsInteger</a></li>
378 <li><a href="#ippContainsString">ippContainsString</a></li>
379 <li><a href="#ippCopyAttribute">ippCopyAttribute</a></li>
380 <li><a href="#ippCopyAttributes">ippCopyAttributes</a></li>
381 <li><a href="#ippCreateRequestedArray">ippCreateRequestedArray</a></li>
382 <li><a href="#ippDateToTime">ippDateToTime</a></li>
383 <li><a href="#ippDelete">ippDelete</a></li>
384 <li><a href="#ippDeleteAttribute">ippDeleteAttribute</a></li>
385 <li><a href="#ippDeleteValues">ippDeleteValues</a></li>
386 <li><a href="#ippEnumString">ippEnumString</a></li>
387 <li><a href="#ippEnumValue">ippEnumValue</a></li>
388 <li><a href="#ippErrorString">ippErrorString</a></li>
389 <li><a href="#ippErrorValue">ippErrorValue</a></li>
390 <li><a href="#ippFindAttribute">ippFindAttribute</a></li>
391 <li><a href="#ippFindNextAttribute">ippFindNextAttribute</a></li>
392 <li><a href="#ippFirstAttribute">ippFirstAttribute</a></li>
393 <li><a href="#ippGetBoolean">ippGetBoolean</a></li>
394 <li><a href="#ippGetCollection">ippGetCollection</a></li>
395 <li><a href="#ippGetCount">ippGetCount</a></li>
396 <li><a href="#ippGetDate">ippGetDate</a></li>
397 <li><a href="#ippGetGroupTag">ippGetGroupTag</a></li>
398 <li><a href="#ippGetInteger">ippGetInteger</a></li>
399 <li><a href="#ippGetName">ippGetName</a></li>
400 <li><a href="#ippGetOctetString">ippGetOctetString</a></li>
401 <li><a href="#ippGetOperation">ippGetOperation</a></li>
402 <li><a href="#ippGetRange">ippGetRange</a></li>
403 <li><a href="#ippGetRequestId">ippGetRequestId</a></li>
404 <li><a href="#ippGetResolution">ippGetResolution</a></li>
405 <li><a href="#ippGetState">ippGetState</a></li>
406 <li><a href="#ippGetStatusCode">ippGetStatusCode</a></li>
407 <li><a href="#ippGetString">ippGetString</a></li>
408 <li><a href="#ippGetValueTag">ippGetValueTag</a></li>
409 <li><a href="#ippGetVersion">ippGetVersion</a></li>
410 <li><a href="#ippLength">ippLength</a></li>
411 <li><a href="#ippNew">ippNew</a></li>
412 <li><a href="#ippNewRequest">ippNewRequest</a></li>
413 <li><a href="#ippNewResponse">ippNewResponse</a></li>
414 <li><a href="#ippNextAttribute">ippNextAttribute</a></li>
415 <li><a href="#ippOpString">ippOpString</a></li>
416 <li><a href="#ippOpValue">ippOpValue</a></li>
417 <li><a href="#ippPort">ippPort</a></li>
418 <li><a href="#ippRead">ippRead</a></li>
419 <li><a href="#ippReadFile">ippReadFile</a></li>
420 <li><a href="#ippReadIO">ippReadIO</a></li>
421 <li><a href="#ippSetBoolean">ippSetBoolean</a></li>
422 <li><a href="#ippSetCollection">ippSetCollection</a></li>
423 <li><a href="#ippSetDate">ippSetDate</a></li>
424 <li><a href="#ippSetGroupTag">ippSetGroupTag</a></li>
425 <li><a href="#ippSetInteger">ippSetInteger</a></li>
426 <li><a href="#ippSetName">ippSetName</a></li>
427 <li><a href="#ippSetOctetString">ippSetOctetString</a></li>
428 <li><a href="#ippSetOperation">ippSetOperation</a></li>
429 <li><a href="#ippSetPort">ippSetPort</a></li>
430 <li><a href="#ippSetRange">ippSetRange</a></li>
431 <li><a href="#ippSetRequestId">ippSetRequestId</a></li>
432 <li><a href="#ippSetResolution">ippSetResolution</a></li>
433 <li><a href="#ippSetState">ippSetState</a></li>
434 <li><a href="#ippSetStatusCode">ippSetStatusCode</a></li>
435 <li><a href="#ippSetString">ippSetString</a></li>
436 <li><a href="#ippSetStringf">ippSetStringf</a></li>
437 <li><a href="#ippSetStringfv">ippSetStringfv</a></li>
438 <li><a href="#ippSetValueTag">ippSetValueTag</a></li>
439 <li><a href="#ippSetVersion">ippSetVersion</a></li>
440 <li><a href="#ippStateString">ippStateString</a></li>
441 <li><a href="#ippTagString">ippTagString</a></li>
442 <li><a href="#ippTagValue">ippTagValue</a></li>
443 <li><a href="#ippTimeToDate">ippTimeToDate</a></li>
444 <li><a href="#ippValidateAttribute">ippValidateAttribute</a></li>
445 <li><a href="#ippValidateAttributes">ippValidateAttributes</a></li>
446 <li><a href="#ippWrite">ippWrite</a></li>
447 <li><a href="#ippWriteFile">ippWriteFile</a></li>
448 <li><a href="#ippWriteIO">ippWriteIO</a></li>
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449 </ul></li>
450 <li><a href="#TYPES">Data Types</a><ul class="subcontents">
798d6e29 451 <li><a href="#cups_client_cert_cb_t">cups_client_cert_cb_t</a></li>
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452 <li><a href="#cups_dest_cb_t">cups_dest_cb_t</a></li>
453 <li><a href="#cups_dest_t">cups_dest_t</a></li>
454 <li><a href="#cups_dinfo_t">cups_dinfo_t</a></li>
798d6e29 455 <li><a href="#cups_job_t">cups_job_t</a></li>
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456 <li><a href="#cups_option_t">cups_option_t</a></li>
457 <li><a href="#cups_password_cb2_t">cups_password_cb2_t</a></li>
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458 <li><a href="#cups_ptype_t">cups_ptype_t</a></li>
459 <li><a href="#cups_server_cert_cb_t">cups_server_cert_cb_t</a></li>
460 <li><a href="#cups_size_t">cups_size_t</a></li>
798d6e29 461 <li><a href="#http_addr_t">http_addr_t</a></li>
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462 <li><a href="#http_encoding_t">http_encoding_t</a></li>
463 <li><a href="#http_encryption_t">http_encryption_t</a></li>
464 <li><a href="#http_field_t">http_field_t</a></li>
465 <li><a href="#http_keepalive_t">http_keepalive_t</a></li>
466 <li><a href="#http_state_t">http_state_t</a></li>
467 <li><a href="#http_t">http_t</a></li>
468 <li><a href="#http_timeout_cb_t">http_timeout_cb_t</a></li>
469 <li><a href="#http_trust_t">http_trust_t</a></li>
470 <li><a href="#http_uri_coding_t">http_uri_coding_t</a></li>
471 <li><a href="#http_uri_status_t">http_uri_status_t</a></li>
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472 <li><a href="#ipp_attribute_t">ipp_attribute_t</a></li>
473 <li><a href="#ipp_copycb_t">ipp_copycb_t</a></li>
798d6e29 474 <li><a href="#ipp_iocb_t">ipp_iocb_t</a></li>
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475 <li><a href="#ipp_orient_t">ipp_orient_t</a></li>
476 <li><a href="#ipp_pstate_t">ipp_pstate_t</a></li>
477 <li><a href="#ipp_quality_t">ipp_quality_t</a></li>
478 <li><a href="#ipp_res_t">ipp_res_t</a></li>
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479 <li><a href="#ipp_rstate_t">ipp_rstate_t</a></li>
480 <li><a href="#ipp_sstate_t">ipp_sstate_t</a></li>
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481 <li><a href="#ipp_state_t">ipp_state_t</a></li>
482 <li><a href="#ipp_t">ipp_t</a></li>
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483 </ul></li>
484 <li><a href="#STRUCTURES">Structures</a><ul class="subcontents">
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485 <li><a href="#cups_dest_s">cups_dest_s</a></li>
486 <li><a href="#cups_job_s">cups_job_s</a></li>
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487 <li><a href="#cups_option_s">cups_option_s</a></li>
488 <li><a href="#cups_size_s">cups_size_s</a></li>
798d6e29 489 </ul></li>
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490 <li><a href="#VARIABLES">Variables</a><ul class="subcontents">
491 <li><a href="#kSecOidOrganizationalUnit">kSecOidOrganizationalUnit</a></li>
492 </ul></li>
798d6e29 493 <li><a href="#ENUMERATIONS">Enumerations</a><ul class="subcontents">
798d6e29 494 <li><a href="#cups_ptype_e">cups_ptype_e</a></li>
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495 <li><a href="#http_encoding_e">http_encoding_e</a></li>
496 <li><a href="#http_encryption_e">http_encryption_e</a></li>
497 <li><a href="#http_field_e">http_field_e</a></li>
498 <li><a href="#http_keepalive_e">http_keepalive_e</a></li>
499 <li><a href="#http_state_e">http_state_e</a></li>
500 <li><a href="#http_status_e">http_status_e</a></li>
501 <li><a href="#http_trust_e">http_trust_e</a></li>
502 <li><a href="#http_uri_coding_e">http_uri_coding_e</a></li>
503 <li><a href="#http_uri_status_e">http_uri_status_e</a></li>
798d6e29 504 <li><a href="#ipp_finishings_e">ipp_finishings_e</a></li>
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505 <li><a href="#ipp_jstate_e">ipp_jstate_e</a></li>
506 <li><a href="#ipp_op_e">ipp_op_e</a></li>
507 <li><a href="#ipp_orient_e">ipp_orient_e</a></li>
508 <li><a href="#ipp_pstate_e">ipp_pstate_e</a></li>
509 <li><a href="#ipp_quality_e">ipp_quality_e</a></li>
510 <li><a href="#ipp_res_e">ipp_res_e</a></li>
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511 <li><a href="#ipp_rstate_e">ipp_rstate_e</a></li>
512 <li><a href="#ipp_sstate_e">ipp_sstate_e</a></li>
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513 <li><a href="#ipp_state_e">ipp_state_e</a></li>
514 <li><a href="#ipp_status_e">ipp_status_e</a></li>
515 <li><a href="#ipp_tag_e">ipp_tag_e</a></li>
516 </ul></li>
517 </ul>
518 </div>
519 <div class="body">
520 <blockquote>
1da024d1 521 <p>Please <a href="https://github.com/apple/cups/issues">file issues on Github</a> to provide feedback on this document.</p>
798d6e29 522</blockquote>
53af7f21 523 <h2><a id="introduction">Introduction</a></h2>
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524 <p>CUPS provides the &quot;cups&quot; library to talk to the different parts of CUPS and with Internet Printing Protocol (IPP) printers. The &quot;cups&quot; library functions are accessed by including the <code>&lt;cups/cups.h&gt;</code> header.</p>
525 <p>CUPS is based on the Internet Printing Protocol (&quot;IPP&quot;), which allows clients (applications) to communicate with a server (the scheduler, printers, etc.) to get a list of destinations, send print jobs, and so forth. You identify which server you want to communicate with using a pointer to the opaque structure <code>http_t</code>. The <code>CUPS_HTTP_DEFAULT</code> constant can be used when you want to talk to the CUPS scheduler.</p>
53af7f21 526 <h3><a id="guidelines">Guidelines</a></h3>
73721e3e 527 <p>When writing software (other than printer drivers) that uses the &quot;cups&quot; library:</p>
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528 <ul>
529 <li>Do not use undocumented or deprecated APIs,</li>
530 <li>Do not rely on pre-configured printers,</li>
531 <li>Do not assume that printers support specific features or formats, and</li>
532 <li>Do not rely on implementation details (PPDs, etc.)</li>
533</ul>
534 <p>CUPS is designed to insulate users and developers from the implementation details of printers and file formats. The goal is to allow an application to supply a print file in a standard format with the user intent (&quot;print four copies, two-sided on A4 media, and staple each copy&quot;) and have the printing system manage the printer communication and format conversion needed.</p>
535 <p>Similarly, printer and job management applications can use standard query operations to obtain the status information in a common, generic form and use standard management operations to control the state of those printers and jobs.</p>
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536 <blockquote>
537 <p><strong>Note:</strong></p>
538 <p>CUPS printer drivers necessarily depend on specific file formats and certain implementation details of the CUPS software. Please consult the Postscript and raster printer driver developer documentation on <a href="https://www.cups.org/documentation.html">CUPS.org</a> for more information.</p>
539</blockquote>
53af7f21 540 <h3><a id="terms-used-in-this-document">Terms Used in This Document</a></h3>
73721e3e 541 <p>A <em>Destination</em> is a printer or print queue that accepts print jobs. A <em>Print</em> <em>Job</em> is a collection of one or more documents that are processed by a destination using options supplied when creating the job. A <em>Document</em> is a file (JPEG image, PDF file, etc.) suitable for printing. An <em>Option</em> controls some aspect of printing, such as the media used. <em>Media</em> is the sheets or roll that is printed on. An <em>Attribute</em> is an option encoded for an Internet Printing Protocol (IPP) request.</p>
53af7f21 542 <h3><a id="compiling-programs-that-use-the-cups-api">Compiling Programs That Use the CUPS API</a></h3>
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543 <p>The CUPS libraries can be used from any C, C++, or Objective C program. The method of compiling against the libraries varies depending on the operating system and installation of CUPS. The following sections show how to compile a simple program (shown below) in two common environments.</p>
544 <p>The following simple program lists the available destinations:</p>
545 <pre><code>#include &lt;stdio.h&gt;
546#include &lt;cups/cups.h&gt;
547
548int print_dest(void *user_data, unsigned flags, cups_dest_t *dest)
549{
550 if (dest-&gt;instance)
551 printf(&quot;%s/%s\n&quot;, dest-&gt;name, dest-&gt;instance);
552 else
553 puts(dest-&gt;name);
554
555 return (1);
556}
557
558int main(void)
559{
560 cupsEnumDests(CUPS_DEST_FLAGS_NONE, 1000, NULL, 0, 0, print_dest, NULL);
561
562 return (0);
563}
564</code></pre>
53af7f21 565 <h4><a id="compiling-with-xcode">Compiling with Xcode</a></h4>
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566 <p>In Xcode, choose <em>New</em> <em>Project...</em> from the <em>File</em> menu (or press SHIFT+CMD+N), then select the <em>Command</em> <em>Line</em> <em>Tool</em> under the macOS Application project type. Click <em>Next</em> and enter a name for the project, for example &quot;firstcups&quot;. Click <em>Next</em> and choose a project directory. The click <em>Next</em> to create the project.</p>
567 <p>In the project window, click on the <em>Build</em> <em>Phases</em> group and expand the <em>Link</em> <em>Binary</em> <em>with</em> <em>Libraries</em> section. Click <em>+</em>, type &quot;libcups&quot; to show the library, and then double-click on <code>libcups.tbd</code>.</p>
798d6e29 568 <p>Finally, click on the <code>main.c</code> file in the sidebar and copy the example program to the file. Build and run (CMD+R) to see the list of destinations.</p>
53af7f21 569 <h4><a id="compiling-with-gcc">Compiling with GCC</a></h4>
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570 <p>From the command-line, create a file called <code>sample.c</code> using your favorite editor, copy the example to this file, and save. Then run the following command to compile it with GCC and run it:</p>
571 <pre><code>gcc -o simple `cups-config --cflags` simple.c `cups-config --libs`
572./simple
573</code></pre>
9c44e2cb 574 <p>The <code>cups-config</code> command provides the compiler flags (<code>cups-config --cflags</code>) and libraries (<code>cups-config --libs</code>) needed for the local system.</p>
53af7f21 575 <h2><a id="working-with-destinations">Working with Destinations</a></h2>
9c44e2cb 576 <p>Destinations, which in CUPS represent individual printers or classes (collections or pools) of printers, are represented by the <code>cups_dest_t</code> structure which includes the name (<code>name</code>), instance (<code>instance</code>, saved options/settings), whether the destination is the default for the user (<code>is_default</code>), and the options and basic information associated with that destination (<code>num_options</code> and <code>options</code>).</p>
798d6e29 577 <p>Historically destinations have been manually maintained by the administrator of a system or network, but CUPS also supports dynamic discovery of destinations on the current network.</p>
53af7f21 578 <h3><a id="finding-available-destinations">Finding Available Destinations</a></h3>
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579 <p>The <code>cupsEnumDests</code> function finds all of the available destinations:</p>
580 <pre><code> int
581 cupsEnumDests(unsigned flags, int msec, int *cancel,
582 cups_ptype_t type, cups_ptype_t mask,
583 cups_dest_cb_t cb, void *user_data)
584</code></pre>
585 <p>The <code>flags</code> argument specifies enumeration options, which at present must be <code>CUPS_DEST_FLAGS_NONE</code>.</p>
586 <p>The <code>msec</code> argument specifies the maximum amount of time that should be used for enumeration in milliseconds - interactive applications should keep this value to 5000 or less when run on the main thread.</p>
587 <p>The <code>cancel</code> argument points to an integer variable that, when set to a non-zero value, will cause enumeration to stop as soon as possible. It can be <code>NULL</code> if not needed.</p>
53af7f21 588 <p>The <code>type</code> and <code>mask</code> arguments are bitfields that allow the caller to filter the destinations based on categories and/or capabilities. The destination's &quot;printer-type&quot; value is masked by the <code>mask</code> value and compared to the <code>type</code> value when filtering. For example, to only enumerate destinations that are hosted on the local system, pass <code>CUPS_PRINTER_LOCAL</code> for the <code>type</code> argument and <code>CUPS_PRINTER_DISCOVERED</code> for the <code>mask</code> argument. The following constants can be used for filtering:</p>
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589 <ul>
590 <li><code>CUPS_PRINTER_CLASS</code>: A collection of destinations.</li>
591 <li><code>CUPS_PRINTER_FAX</code>: A facsimile device.</li>
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592 <li><code>CUPS_PRINTER_LOCAL</code>: A local printer or class. This constant has the value 0 (no bits set) and is only used for the <code>type</code> argument and is paired with the <code>CUPS_PRINTER_REMOTE</code> or <code>CUPS_PRINTER_DISCOVERED</code> constant passed in the <code>mask</code> argument.</li>
593 <li><code>CUPS_PRINTER_REMOTE</code>: A remote (shared) printer or class.</li>
594 <li><code>CUPS_PRINTER_DISCOVERED</code>: An available network printer or class.</li>
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595 <li><code>CUPS_PRINTER_BW</code>: Can do B&amp;W printing.</li>
596 <li><code>CUPS_PRINTER_COLOR</code>: Can do color printing.</li>
597 <li><code>CUPS_PRINTER_DUPLEX</code>: Can do two-sided printing.</li>
598 <li><code>CUPS_PRINTER_STAPLE</code>: Can staple output.</li>
599 <li><code>CUPS_PRINTER_COLLATE</code>: Can quickly collate copies.</li>
600 <li><code>CUPS_PRINTER_PUNCH</code>: Can punch output.</li>
601 <li><code>CUPS_PRINTER_COVER</code>: Can cover output.</li>
602 <li><code>CUPS_PRINTER_BIND</code>: Can bind output.</li>
603 <li><code>CUPS_PRINTER_SORT</code>: Can sort output (mailboxes, etc.)</li>
604 <li><code>CUPS_PRINTER_SMALL</code>: Can print on Letter/Legal/A4-size media.</li>
605 <li><code>CUPS_PRINTER_MEDIUM</code>: Can print on Tabloid/B/C/A3/A2-size media.</li>
606 <li><code>CUPS_PRINTER_LARGE</code>: Can print on D/E/A1/A0-size media.</li>
607 <li><code>CUPS_PRINTER_VARIABLE</code>: Can print on rolls and custom-size media.</li>
608</ul>
609 <p>The <code>cb</code> argument specifies a function to call for every destination that is found:</p>
610 <pre><code>typedef int (*cups_dest_cb_t)(void *user_data,
611 unsigned flags,
612 cups_dest_t *dest);
613</code></pre>
9c44e2cb 614 <p>The callback function receives a copy of the <code>user_data</code> argument along with a bitfield (<code>flags</code>) and the destination that was found. The <code>flags</code> argument can have any of the following constant (bit) values set:</p>
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615 <ul>
616 <li><code>CUPS_DEST_FLAGS_MORE</code>: There are more destinations coming.</li>
617 <li><code>CUPS_DEST_FLAGS_REMOVED</code>: The destination has gone away and should be removed from the list of destinations a user can select.</li>
618 <li><code>CUPS_DEST_FLAGS_ERROR</code>: An error occurred. The reason for the error can be found by calling the <code>cupsLastError</code> and/or <code>cupsLastErrorString</code> functions.</li>
619</ul>
620 <p>The callback function returns 0 to stop enumeration or 1 to continue.</p>
718ee2ff 621 <blockquote>
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622 <p><strong>Note:</strong></p>
623 <p>The callback function will likely be called multiple times for the same destination, so it is up to the caller to suppress any duplicate destinations.</p>
718ee2ff 624</blockquote>
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625 <p>The following example shows how to use <code>cupsEnumDests</code> to get a filtered array of destinations:</p>
626 <pre><code>typedef struct
627{
628 int num_dests;
629 cups_dest_t *dests;
630} my_user_data_t;
631
632int
633my_dest_cb(my_user_data_t *user_data, unsigned flags,
634 cups_dest_t *dest)
635{
636 if (flags &amp; CUPS_DEST_FLAGS_REMOVED)
637 {
638 /*
639 * Remove destination from array...
640 */
641
642 user_data-&gt;num_dests =
643 cupsRemoveDest(dest-&gt;name, dest-&gt;instance,
644 user_data-&gt;num_dests,
645 &amp;(user_data-&gt;dests));
646 }
647 else
648 {
649 /*
650 * Add destination to array...
651 */
652
653 user_data-&gt;num_dests =
654 cupsCopyDest(dest, user_data-&gt;num_dests,
655 &amp;(user_data-&gt;dests));
656 }
657
658 return (1);
659}
660
661int
662my_get_dests(cups_ptype_t type, cups_ptype_t mask,
663 cups_dest_t **dests)
664{
665 my_user_data_t user_data = { 0, NULL };
666
667 if (!cupsEnumDests(CUPS_DEST_FLAGS_NONE, 1000, NULL, type,
668 mask, (cups_dest_cb_t)my_dest_cb,
669 &amp;user_data))
670 {
671 /*
672 * An error occurred, free all of the destinations and
673 * return...
674 */
675
676 cupsFreeDests(user_data.num_dests, user_dasta.dests);
677
678 *dests = NULL;
679
680 return (0);
681 }
682
683 /*
684 * Return the destination array...
685 */
686
687 *dests = user_data.dests;
688
689 return (user_data.num_dests);
690}
691</code></pre>
53af7f21 692 <h3><a id="basic-destination-information">Basic Destination Information</a></h3>
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693 <p>The <code>num_options</code> and <code>options</code> members of the <code>cups_dest_t</code> structure provide basic attributes about the destination in addition to the user default options and values for that destination. The following names are predefined for various destination attributes:</p>
694 <ul>
695 <li>&quot;auth-info-required&quot;: The type of authentication required for printing to this destination: &quot;none&quot;, &quot;username,password&quot;, &quot;domain,username,password&quot;, or &quot;negotiate&quot; (Kerberos).</li>
696 <li>&quot;printer-info&quot;: The human-readable description of the destination such as &quot;My Laser Printer&quot;.</li>
697 <li>&quot;printer-is-accepting-jobs&quot;: &quot;true&quot; if the destination is accepting new jobs, &quot;false&quot; otherwise.</li>
698 <li>&quot;printer-is-shared&quot;: &quot;true&quot; if the destination is being shared with other computers, &quot;false&quot; otherwise.</li>
699 <li>&quot;printer-location&quot;: The human-readable location of the destination such as &quot;Lab 4&quot;.</li>
700 <li>&quot;printer-make-and-model&quot;: The human-readable make and model of the destination such as &quot;ExampleCorp LaserPrinter 4000 Series&quot;.</li>
701 <li>&quot;printer-state&quot;: &quot;3&quot; if the destination is idle, &quot;4&quot; if the destination is printing a job, and &quot;5&quot; if the destination is stopped.</li>
702 <li>&quot;printer-state-change-time&quot;: The UNIX time when the destination entered the current state.</li>
703 <li>&quot;printer-state-reasons&quot;: Additional comma-delimited state keywords for the destination such as &quot;media-tray-empty-error&quot; and &quot;toner-low-warning&quot;.</li>
704 <li>&quot;printer-type&quot;: The <code>cups_ptype_t</code> value associated with the destination.</li>
53af7f21 705 <li>&quot;printer-uri-supported&quot;: The URI associated with the destination; if not set, this destination was discovered but is not yet setup as a local printer.</li>
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706</ul>
707 <p>Use the <code>cupsGetOption</code> function to retrieve the value. For example, the following code gets the make and model of a destination:</p>
708 <pre><code>const char *model = cupsGetOption(&quot;printer-make-and-model&quot;,
709 dest-&gt;num_options,
710 dest-&gt;options);
711</code></pre>
53af7f21 712 <h3><a id="detailed-destination-information">Detailed Destination Information</a></h3>
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713 <p>Once a destination has been chosen, the <code>cupsCopyDestInfo</code> function can be used to gather detailed information about the destination:</p>
714 <pre><code>cups_dinfo_t *
715cupsCopyDestInfo(http_t *http, cups_dest_t *dest);
716</code></pre>
717 <p>The <code>http</code> argument specifies a connection to the CUPS scheduler and is typically the constant <code>CUPS_HTTP_DEFAULT</code>. The <code>dest</code> argument specifies the destination to query.</p>
718 <p>The <code>cups_dinfo_t</code> structure that is returned contains a snapshot of the supported options and their supported, ready, and default values. It also can report constraints between different options and values, and recommend changes to resolve those constraints.</p>
53af7f21 719 <h4><a id="getting-supported-options-and-values">Getting Supported Options and Values</a></h4>
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720 <p>The <code>cupsCheckDestSupported</code> function can be used to test whether a particular option or option and value is supported:</p>
721 <pre><code>int
722cupsCheckDestSupported(http_t *http, cups_dest_t *dest,
723 cups_dinfo_t *info,
724 const char *option,
725 const char *value);
726</code></pre>
727 <p>The <code>option</code> argument specifies the name of the option to check. The following constants can be used to check the various standard options:</p>
728 <ul>
729 <li><code>CUPS_COPIES</code>: Controls the number of copies that are produced.</li>
730 <li><code>CUPS_FINISHINGS</code>: A comma-delimited list of integer constants that control the finishing processes that are applied to the job, including stapling, punching, and folding.</li>
731 <li><code>CUPS_MEDIA</code>: Controls the media size that is used, typically one of the following: <code>CUPS_MEDIA_3X5</code>, <code>CUPS_MEDIA_4X6</code>, <code>CUPS_MEDIA_5X7</code>, <code>CUPS_MEDIA_8X10</code>, <code>CUPS_MEDIA_A3</code>, <code>CUPS_MEDIA_A4</code>, <code>CUPS_MEDIA_A5</code>, <code>CUPS_MEDIA_A6</code>, <code>CUPS_MEDIA_ENV10</code>, <code>CUPS_MEDIA_ENVDL</code>, <code>CUPS_MEDIA_LEGAL</code>, <code>CUPS_MEDIA_LETTER</code>, <code>CUPS_MEDIA_PHOTO_L</code>, <code>CUPS_MEDIA_SUPERBA3</code>, or <code>CUPS_MEDIA_TABLOID</code>.</li>
732 <li><code>CUPS_MEDIA_SOURCE</code>: Controls where the media is pulled from, typically either <code>CUPS_MEDIA_SOURCE_AUTO</code> or <code>CUPS_MEDIA_SOURCE_MANUAL</code>.</li>
733 <li><code>CUPS_MEDIA_TYPE</code>: Controls the type of media that is used, typically one of the following: <code>CUPS_MEDIA_TYPE_AUTO</code>, <code>CUPS_MEDIA_TYPE_ENVELOPE</code>, <code>CUPS_MEDIA_TYPE_LABELS</code>, <code>CUPS_MEDIA_TYPE_LETTERHEAD</code>, <code>CUPS_MEDIA_TYPE_PHOTO</code>, <code>CUPS_MEDIA_TYPE_PHOTO_GLOSSY</code>, <code>CUPS_MEDIA_TYPE_PHOTO_MATTE</code>, <code>CUPS_MEDIA_TYPE_PLAIN</code>, or <code>CUPS_MEDIA_TYPE_TRANSPARENCY</code>.</li>
734 <li><code>CUPS_NUMBER_UP</code>: Controls the number of document pages that are placed on each media side.</li>
735 <li><code>CUPS_ORIENTATION</code>: Controls the orientation of document pages placed on the media: <code>CUPS_ORIENTATION_PORTRAIT</code> or <code>CUPS_ORIENTATION_LANDSCAPE</code>.</li>
9c44e2cb 736 <li><code>CUPS_PRINT_COLOR_MODE</code>: Controls whether the output is in color (<code>CUPS_PRINT_COLOR_MODE_COLOR</code>), grayscale (<code>CUPS_PRINT_COLOR_MODE_MONOCHROME</code>), or either (<code>CUPS_PRINT_COLOR_MODE_AUTO</code>).</li>
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737 <li><code>CUPS_PRINT_QUALITY</code>: Controls the generate quality of the output: <code>CUPS_PRINT_QUALITY_DRAFT</code>, <code>CUPS_PRINT_QUALITY_NORMAL</code>, or <code>CUPS_PRINT_QUALITY_HIGH</code>.</li>
738 <li><code>CUPS_SIDES</code>: Controls whether prints are placed on one or both sides of the media: <code>CUPS_SIDES_ONE_SIDED</code>, <code>CUPS_SIDES_TWO_SIDED_PORTRAIT</code>, or <code>CUPS_SIDES_TWO_SIDED_LANDSCAPE</code>.</li>
739</ul>
740 <p>If the <code>value</code> argument is <code>NULL</code>, the <code>cupsCheckDestSupported</code> function returns whether the option is supported by the destination. Otherwise, the function returns whether the specified value of the option is supported.</p>
741 <p>The <code>cupsFindDestSupported</code> function returns the IPP attribute containing the supported values for a given option:</p>
742 <pre><code> ipp_attribute_t *
743 cupsFindDestSupported(http_t *http, cups_dest_t *dest,
744 cups_dinfo_t *dinfo,
745 const char *option);
746</code></pre>
747 <p>For example, the following code prints the supported finishing processes for a destination, if any, to the standard output:</p>
748 <pre><code>cups_dinfo_t *info = cupsCopyDestInfo(CUPS_HTTP_DEFAULT,
749 dest);
750
751if (cupsCheckDestSupported(CUPS_HTTP_DEFAULT, dest, info,
752 CUPS_FINISHINGS, NULL))
753{
754 ipp_attribute_t *finishings =
755 cupsFindDestSupported(CUPS_HTTP_DEFAULT, dest, info,
756 CUPS_FINISHINGS);
757 int i, count = ippGetCount(finishings);
758
759 puts(&quot;finishings supported:&quot;);
760 for (i = 0; i &lt; count; i ++)
761 printf(&quot; %d\n&quot;, ippGetInteger(finishings, i));
762}
763else
764 puts(&quot;finishings not supported.&quot;);
765</code></pre>
766 <p>The &quot;job-creation-attributes&quot; option can be queried to get a list of supported options. For example, the following code prints the list of supported options to the standard output:</p>
767 <pre><code>ipp_attribute_t *attrs =
768 cupsFindDestSupported(CUPS_HTTP_DEFAULT, dest, info,
769 &quot;job-creation-attributes&quot;);
770int i, count = ippGetCount(attrs);
771
772for (i = 0; i &lt; count; i ++)
773 puts(ippGetString(attrs, i, NULL));
774</code></pre>
53af7f21 775 <h4><a id="getting-default-values">Getting Default Values</a></h4>
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776 <p>There are two sets of default values - user defaults that are available via the <code>num_options</code> and <code>options</code> members of the <code>cups_dest_t</code> structure, and destination defaults that available via the <code>cups_dinfo_t</code> structure and the <code>cupsFindDestDefault</code> function which returns the IPP attribute containing the default value(s) for a given option:</p>
777 <pre><code>ipp_attribute_t *
778cupsFindDestDefault(http_t *http, cups_dest_t *dest,
779 cups_dinfo_t *dinfo,
780 const char *option);
781</code></pre>
782 <p>The user defaults from <code>cupsGetOption</code> should always take preference over the destination defaults. For example, the following code prints the default finishings value(s) to the standard output:</p>
783 <pre><code>const char *def_value =
784 cupsGetOption(CUPS_FINISHINGS, dest-&gt;num_options,
785 dest-&gt;options);
786ipp_attribute_t *def_attr =
787 cupsFindDestDefault(CUPS_HTTP_DEFAULT, dest, info,
788 CUPS_FINISHINGS);
789
790if (def_value != NULL)
791{
792 printf(&quot;Default finishings: %s\n&quot;, def_value);
793}
794else
795{
796 int i, count = ippGetCount(def_attr);
797
798 printf(&quot;Default finishings: %d&quot;,
799 ippGetInteger(def_attr, 0));
800 for (i = 1; i &lt; count; i ++)
801 printf(&quot;,%d&quot;, ippGetInteger(def_attr, i));
802 putchar('\n');
803}
804</code></pre>
53af7f21 805 <h4><a id="getting-ready-loaded-values">Getting Ready (Loaded) Values</a></h4>
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806 <p>The finishings and media options also support queries for the ready, or loaded, values. For example, a printer may have punch and staple finishers installed but be out of staples - the supported values will list both punch and staple finishing processes but the ready values will only list the punch processes. Similarly, a printer may support hundreds of different sizes of media but only have a single size loaded at any given time - the ready values are limited to the media that is actually in the printer.</p>
807 <p>The <code>cupsFindDestReady</code> function finds the IPP attribute containing the ready values for a given option:</p>
808 <pre><code>ipp_attribute_t *
809cupsFindDestReady(http_t *http, cups_dest_t *dest,
810 cups_dinfo_t *dinfo, const char *option);
811</code></pre>
812 <p>For example, the following code lists the ready finishing processes:</p>
813 <pre><code>ipp_attribute_t *ready_finishings =
814 cupsFindDestReady(CUPS_HTTP_DEFAULT, dest, info,
815 CUPS_FINISHINGS);
816
817if (ready_finishings != NULL)
818{
819 int i, count = ippGetCount(ready_finishings);
820
821 puts(&quot;finishings ready:&quot;);
822 for (i = 0; i &lt; count; i ++)
823 printf(&quot; %d\n&quot;, ippGetInteger(ready_finishings, i));
824}
825else
826 puts(&quot;no finishings are ready.&quot;);
827</code></pre>
53af7f21 828 <h4><a id="media-size-options">Media Size Options</a></h4>
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829 <p>CUPS provides functions for querying the dimensions and margins for each of the supported media size options. The <code>cups_size_t</code> structure is used to describe a media size:</p>
830 <pre><code>typedef struct cups_size_s
831{
832 char media[128];
833 int width, length;
834 int bottom, left, right, top;
835} cups_size_t;
836</code></pre>
837 <p>The <code>width</code> and <code>length</code> members specify the dimensions of the media in hundredths of millimeters (1/2540th of an inch). The <code>bottom</code>, <code>left</code>, <code>right</code>, and <code>top</code> members specify the margins of the printable area, also in hundredths of millimeters.</p>
838 <p>The <code>cupsGetDestMediaByName</code> and <code>cupsGetDestMediaBySize</code> functions lookup the media size information using a standard media size name or dimensions in hundredths of millimeters:</p>
839 <pre><code>int
840cupsGetDestMediaByName(http_t *http, cups_dest_t *dest,
841 cups_dinfo_t *dinfo,
842 const char *media,
843 unsigned flags, cups_size_t *size);
844
845int
846cupsGetDestMediaBySize(http_t *http, cups_dest_t *dest,
847 cups_dinfo_t *dinfo,
848 int width, int length,
849 unsigned flags, cups_size_t *size);
850</code></pre>
851 <p>The <code>media</code>, <code>width</code>, and <code>length</code> arguments specify the size to lookup. The <code>flags</code> argument specifies a bitfield controlling various lookup options:</p>
852 <ul>
853 <li><code>CUPS_MEDIA_FLAGS_DEFAULT</code>: Find the closest size supported by the printer.</li>
854 <li><code>CUPS_MEDIA_FLAGS_BORDERLESS</code>: Find a borderless size.</li>
855 <li><code>CUPS_MEDIA_FLAGS_DUPLEX</code>: Find a size compatible with two-sided printing.</li>
856 <li><code>CUPS_MEDIA_FLAGS_EXACT</code>: Find an exact match for the size.</li>
857 <li><code>CUPS_MEDIA_FLAGS_READY</code>: If the printer supports media sensing or configuration of the media in each tray/source, find the size amongst the &quot;ready&quot; media.</li>
858</ul>
859 <p>If a matching size is found for the destination, the size information is stored in the structure pointed to by the <code>size</code> argument and 1 is returned. Otherwise 0 is returned.</p>
860 <p>For example, the following code prints the margins for two-sided printing on US Letter media:</p>
861 <pre><code>cups_size_t size;
862
863if (cupsGetDestMediaByName(CUPS_HTTP_DEFAULT, dest, info,
864 CUPS_MEDIA_LETTER,
865 CUPS_MEDIA_FLAGS_DUPLEX, &amp;size))
866{
867 puts(&quot;Margins for duplex US Letter:&quot;);
868 printf(&quot; Bottom: %.2fin\n&quot;, size.bottom / 2540.0);
869 printf(&quot; Left: %.2fin\n&quot;, size.left / 2540.0);
870 printf(&quot; Right: %.2fin\n&quot;, size.right / 2540.0);
871 printf(&quot; Top: %.2fin\n&quot;, size.top / 2540.0);
872}
873else
874 puts(&quot;Margins for duplex US Letter are not available.&quot;);
875</code></pre>
876 <p>You can also enumerate all of the sizes that match a given <code>flags</code> value using the <code>cupsGetDestMediaByIndex</code> and <code>cupsGetDestMediaCount</code> functions:</p>
877 <pre><code>int
878cupsGetDestMediaByIndex(http_t *http, cups_dest_t *dest,
879 cups_dinfo_t *dinfo, int n,
880 unsigned flags, cups_size_t *size);
881
882int
883cupsGetDestMediaCount(http_t *http, cups_dest_t *dest,
884 cups_dinfo_t *dinfo, unsigned flags);
885</code></pre>
886 <p>For example, the following code prints the list of ready media and corresponding margins:</p>
887 <pre><code>cups_size_t size;
888int i;
889int count = cupsGetDestMediaCount(CUPS_HTTP_DEFAULT,
890 dest, info,
891 CUPS_MEDIA_FLAGS_READY);
892
893for (i = 0; i &lt; count; i ++)
894{
895 if (cupsGetDestMediaByIndex(CUPS_HTTP_DEFAULT, dest, info,
896 i, CUPS_MEDIA_FLAGS_READY,
897 &amp;size))
898 {
899 printf(&quot;%s:\n&quot;, size.name);
900 printf(&quot; Width: %.2fin\n&quot;, size.width / 2540.0);
901 printf(&quot; Length: %.2fin\n&quot;, size.length / 2540.0);
902 printf(&quot; Bottom: %.2fin\n&quot;, size.bottom / 2540.0);
903 printf(&quot; Left: %.2fin\n&quot;, size.left / 2540.0);
904 printf(&quot; Right: %.2fin\n&quot;, size.right / 2540.0);
905 printf(&quot; Top: %.2fin\n&quot;, size.top / 2540.0);
906 }
907}
908</code></pre>
909 <p>Finally, the <code>cupsGetDestMediaDefault</code> function returns the default media size:</p>
910 <pre><code>int
911cupsGetDestMediaDefault(http_t *http, cups_dest_t *dest,
912 cups_dinfo_t *dinfo, unsigned flags,
913 cups_size_t *size);
914</code></pre>
53af7f21 915 <h4><a id="localizing-options-and-values">Localizing Options and Values</a></h4>
6ad44eeb 916 <p>CUPS provides three functions to get localized, human-readable strings in the user's current locale for options and values: <code>cupsLocalizeDestMedia</code>, <code>cupsLocalizeDestOption</code>, and <code>cupsLocalizeDestValue</code>:</p>
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917 <pre><code>const char *
918cupsLocalizeDestMedia(http_t *http, cups_dest_t *dest,
919 cups_dinfo_t *info, unsigned flags,
920 cups_size_t *size);
921
922const char *
923cupsLocalizeDestOption(http_t *http, cups_dest_t *dest,
924 cups_dinfo_t *info,
925 const char *option);
926
927const char *
928cupsLocalizeDestValue(http_t *http, cups_dest_t *dest,
929 cups_dinfo_t *info,
930 const char *option, const char *value);
931</code></pre>
53af7f21 932 <h3><a id="submitting-a-print-job">Submitting a Print Job</a></h3>
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933 <p>Once you are ready to submit a print job, you create a job using the <code>cupsCreateDestJob</code> function:</p>
934 <pre><code>ipp_status_t
935cupsCreateDestJob(http_t *http, cups_dest_t *dest,
936 cups_dinfo_t *info, int *job_id,
937 const char *title, int num_options,
938 cups_option_t *options);
939</code></pre>
940 <p>The <code>title</code> argument specifies a name for the print job such as &quot;My Document&quot;. The <code>num_options</code> and <code>options</code> arguments specify the options for the print job which are allocated using the <code>cupsAddOption</code> function.</p>
941 <p>When successful, the job's numeric identifier is stored in the integer pointed to by the <code>job_id</code> argument and <code>IPP_STATUS_OK</code> is returned. Otherwise, an IPP error status is returned.</p>
942 <p>For example, the following code creates a new job that will print 42 copies of a two-sided US Letter document:</p>
943 <pre><code>int job_id = 0;
944int num_options = 0;
945cups_option_t *options = NULL;
946
947num_options = cupsAddOption(CUPS_COPIES, &quot;42&quot;,
948 num_options, &amp;options);
949num_options = cupsAddOption(CUPS_MEDIA, CUPS_MEDIA_LETTER,
950 num_options, &amp;options);
951num_options = cupsAddOption(CUPS_SIDES,
952 CUPS_SIDES_TWO_SIDED_PORTRAIT,
953 num_options, &amp;options);
954
955if (cupsCreateDestJob(CUPS_HTTP_DEFAULT, dest, info,
956 &amp;job_id, &quot;My Document&quot;, num_options,
957 options) == IPP_STATUS_OK)
958 printf(&quot;Created job: %d\n&quot;, job_id);
959else
960 printf(&quot;Unable to create job: %s\n&quot;,
961 cupsLastErrorString());
962</code></pre>
963 <p>Once the job is created, you submit documents for the job using the <code>cupsStartDestDocument</code>, <code>cupsWriteRequestData</code>, and <code>cupsFinishDestDocument</code> functions:</p>
964 <pre><code>http_status_t
965cupsStartDestDocument(http_t *http, cups_dest_t *dest,
966 cups_dinfo_t *info, int job_id,
967 const char *docname,
968 const char *format,
969 int num_options,
970 cups_option_t *options,
971 int last_document);
972
973http_status_t
974cupsWriteRequestData(http_t *http, const char *buffer,
975 size_t length);
976
977ipp_status_t
978cupsFinishDestDocument(http_t *http, cups_dest_t *dest,
979 cups_dinfo_t *info);
980</code></pre>
981 <p>The <code>docname</code> argument specifies the name of the document, typically the original filename. The <code>format</code> argument specifies the MIME media type of the document, including the following constants:</p>
982 <ul>
983 <li><code>CUPS_FORMAT_JPEG</code>: &quot;image/jpeg&quot;</li>
984 <li><code>CUPS_FORMAT_PDF</code>: &quot;application/pdf&quot;</li>
985 <li><code>CUPS_FORMAT_POSTSCRIPT</code>: &quot;application/postscript&quot;</li>
986 <li><code>CUPS_FORMAT_TEXT</code>: &quot;text/plain&quot;</li>
987</ul>
988 <p>The <code>num_options</code> and <code>options</code> arguments specify per-document print options, which at present must be 0 and <code>NULL</code>. The <code>last_document</code> argument specifies whether this is the last document in the job.</p>
989 <p>For example, the following code submits a PDF file to the job that was just created:</p>
990 <pre><code>FILE *fp = fopen(&quot;filename.pdf&quot;, &quot;rb&quot;);
991size_t bytes;
992char buffer[65536];
993
994if (cupsStartDestDocument(CUPS_HTTP_DEFAULT, dest, info,
995 job_id, &quot;filename.pdf&quot;, 0, NULL,
996 1) == HTTP_STATUS_CONTINUE)
997{
998 while ((bytes = fread(buffer, 1, sizeof(buffer), fp)) &gt; 0)
999 if (cupsWriteRequestData(CUPS_HTTP_DEFAULT, buffer,
1000 bytes) != HTTP_STATUS_CONTINUE)
1001 break;
1002
1003 if (cupsFinishDestDocument(CUPS_HTTP_DEFAULT, dest,
1004 info) == IPP_STATUS_OK)
1005 puts(&quot;Document send succeeded.&quot;);
1006 else
1007 printf(&quot;Document send failed: %s\n&quot;,
1008 cupsLastErrorString());
1009}
1010
1011fclose(fp);
1012</code></pre>
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1013 <h2><a id="sending-ipp-requests">Sending IPP Requests</a></h2>
1014 <p>CUPS provides a rich API for sending IPP requests to the scheduler or printers, typically from management or utility applications whose primary purpose is not to send print jobs.</p>
1015 <h3><a id="connecting-to-the-scheduler-or-printer">Connecting to the Scheduler or Printer</a></h3>
1016 <p>The connection to the scheduler or printer is represented by the HTTP connection type <code>http_t</code>. The <code>cupsConnectDest</code> function connects to the scheduler or printer associated with the destination:</p>
1017 <pre><code>http_t *
1018cupsConnectDest(cups_dest_t *dest, unsigned flags, int msec,
1019 int *cancel, char *resource,
1020 size_t resourcesize, cups_dest_cb_t cb,
1021 void *user_data);
1022</code></pre>
1023 <p>The <code>dest</code> argument specifies the destination to connect to.</p>
1024 <p>The <code>flags</code> argument specifies whether you want to connect to the scheduler (<code>CUPS_DEST_FLAGS_NONE</code>) or device/printer (<code>CUPS_DEST_FLAGS_DEVICE</code>) associated with the destination.</p>
1025 <p>The <code>msec</code> argument specifies how long you are willing to wait for the connection to be established in milliseconds. Specify a value of <code>-1</code> to wait indefinitely.</p>
1026 <p>The <code>cancel</code> argument specifies the address of an integer variable that can be set to a non-zero value to cancel the connection. Specify a value of <code>NULL</code> to not provide a cancel variable.</p>
1027 <p>The <code>resource</code> and <code>resourcesize</code> arguments specify the address and size of a character string array to hold the path to use when sending an IPP request.</p>
1028 <p>The <code>cb</code> and <code>user_data</code> arguments specify a destination callback function that returns 1 to continue connecting or 0 to stop. The destination callback work the same way as the one used for the <code>cupsEnumDests</code> function.</p>
1029 <p>On success, a HTTP connection is returned that can be used to send IPP requests and get IPP responses.</p>
1030 <p>For example, the following code connects to the printer associated with a destination with a 30 second timeout:</p>
1031 <pre><code>char resource[256];
1032http_t *http = cupsConnectDest(dest, CUPS_DEST_FLAGS_DEVICE,
1033 30000, NULL, resource,
1034 sizeof(resource), NULL, NULL);
1035</code></pre>
1036 <h3><a id="creating-an-ipp-request">Creating an IPP Request</a></h3>
1037 <p>IPP requests are represented by the IPP message type <code>ipp_t</code> and each IPP attribute in the request is representing using the type <code>ipp_attribute_t</code>. Each IPP request includes an operation code (<code>IPP_OP_CREATE_JOB</code>, <code>IPP_OP_GET_PRINTER_ATTRIBUTES</code>, etc.) and a 32-bit integer identifier.</p>
1038 <p>The <code>ippNewRequest</code> function creates a new IPP request:</p>
1039 <pre><code>ipp_t *
1040ippNewRequest(ipp_op_t op);
1041</code></pre>
1042 <p>The <code>op</code> argument specifies the IPP operation code for the request. For example, the following code creates an IPP Get-Printer-Attributes request:</p>
1043 <pre><code>ipp_t *request = ippNewRequest(IPP_OP_GET_PRINTER_ATTRIBUTES);
1044</code></pre>
1045 <p>The request identifier is automatically set to a unique value for the current process.</p>
1046 <p>Each IPP request starts with two IPP attributes, &quot;attributes-charset&quot; and &quot;attributes-natural-language&quot;, followed by IPP attribute(s) that specify the target of the operation. The <code>ippNewRequest</code> automatically adds the correct &quot;attributes-charset&quot; and &quot;attributes-natural-language&quot; attributes, but you must add the target attribute(s). For example, the following code adds the &quot;printer-uri&quot; attribute to the IPP Get-Printer-Attributes request to specify which printer is being queried:</p>
1047 <pre><code>const char *printer_uri = cupsGetOption(&quot;device-uri&quot;,
1048 dest-&gt;num_options,
1049 dest-&gt;options);
1050
1051ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1052 &quot;printer-uri&quot;, NULL, printer_uri);
1053</code></pre>
1054 <blockquote>
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1055 <p><strong>Note:</strong></p>
1056 <p>If we wanted to query the scheduler instead of the device, we would look up the &quot;printer-uri-supported&quot; option instead of the &quot;device-uri&quot; value.</p>
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1057</blockquote>
1058 <p>The <code>ippAddString</code> function adds the &quot;printer-uri&quot; attribute the the IPP request. The <code>IPP_TAG_OPERATION</code> argument specifies that the attribute is part of the operation. The <code>IPP_TAG_URI</code> argument specifies that the value is a Universal Resource Identifier (URI) string. The <code>NULL</code> argument specifies there is no language (English, French, Japanese, etc.) associated with the string, and the <code>printer_uri</code> argument specifies the string value.</p>
1059 <p>The IPP Get-Printer-Attributes request also supports an IPP attribute called &quot;requested-attributes&quot; that lists the attributes and values you are interested in. For example, the following code requests the printer state attributes:</p>
1060 <pre><code>static const char * const requested_attributes[] =
1061{
1062 &quot;printer-state&quot;,
1063 &quot;printer-state-message&quot;,
1064 &quot;printer-state-reasons&quot;
1065};
1066
1067ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
1068 &quot;requested-attributes&quot;, 3, NULL,
1069 requested_attributes);
1070</code></pre>
1071 <p>The <code>ippAddStrings</code> function adds an attribute with one or more strings, in this case three. The <code>IPP_TAG_KEYWORD</code> argument specifies that the strings are keyword values, which are used for attribute names. All strings use the same language (<code>NULL</code>), and the attribute will contain the three strings in the array <code>requested_attributes</code>.</p>
1072 <p>CUPS provides many functions to adding attributes of different types:</p>
1073 <ul>
1074 <li><code>ippAddBoolean</code> adds a boolean (<code>IPP_TAG_BOOLEAN</code>) attribute with one value.</li>
1075 <li><code>ippAddInteger</code> adds an enum (<code>IPP_TAG_ENUM</code>) or integer (<code>IPP_TAG_INTEGER</code>) attribute with one value.</li>
1076 <li><code>ippAddIntegers</code> adds an enum or integer attribute with one or more values.</li>
1077 <li><code>ippAddOctetString</code> adds an octetString attribute with one value.</li>
1078 <li><code>ippAddOutOfBand</code> adds a admin-defined (<code>IPP_TAG_ADMINDEFINE</code>), default (<code>IPP_TAG_DEFAULT</code>), delete-attribute (<code>IPP_TAG_DELETEATTR</code>), no-value (<code>IPP_TAG_NOVALUE</code>), not-settable (<code>IPP_TAG_NOTSETTABLE</code>), unknown (<code>IPP_TAG_UNKNOWN</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_VALUE</code>) out-of-band attribute.</li>
1079 <li><code>ippAddRange</code> adds a rangeOfInteger attribute with one range.</li>
1080 <li><code>ippAddRanges</code> adds a rangeOfInteger attribute with one or more ranges.</li>
1081 <li><code>ippAddResolution</code> adds a resolution attribute with one resolution.</li>
1082 <li><code>ippAddResolutions</code> adds a resolution attribute with one or more resolutions.</li>
1083 <li><code>ippAddString</code> adds a charset (<code>IPP_TAG_CHARSET</code>), keyword (<code>IPP_TAG_KEYWORD</code>), mimeMediaType (<code>IPP_TAG_MIMETYPE</code>), name (<code>IPP_TAG_NAME</code> and <code>IPP_TAG_NAMELANG</code>), naturalLanguage (<code>IPP_TAG_NATURAL_LANGUAGE</code>), text (<code>IPP_TAG_TEXT</code> and <code>IPP_TAG_TEXTLANG</code>), uri (<code>IPP_TAG_URI</code>), or uriScheme (<code>IPP_TAG_URISCHEME</code>) attribute with one value.</li>
1084 <li><code>ippAddStrings</code> adds a charset, keyword, mimeMediaType, name, naturalLanguage, text, uri, or uriScheme attribute with one or more values.</li>
1085</ul>
1086 <h3><a id="sending-the-ipp-request">Sending the IPP Request</a></h3>
1087 <p>Once you have created the IPP request, you can send it using the <code>cupsDoRequest</code> function. For example, the following code sends the IPP Get-Printer-Attributes request to the destination and saves the response:</p>
1088 <pre><code>ipp_t *response = cupsDoRequest(http, request, resource);
1089</code></pre>
1090 <p>For requests like Send-Document that include a file, the <code>cupsDoFileRequest</code> function should be used:</p>
1091 <pre><code>ipp_t *response = cupsDoFileRequest(http, request, resource,
1092 filename);
1093</code></pre>
1094 <p>Both <code>cupsDoRequest</code> and <code>cupsDoFileRequest</code> free the IPP request. If a valid IPP response is received, it is stored in a new IPP message (<code>ipp_t</code>) and returned to the caller. Otherwise <code>NULL</code> is returned.</p>
1095 <p>The status from the most recent request can be queried using the <code>cupsLastError</code> function, for example:</p>
1096 <pre><code>if (cupsLastError() &gt;= IPP_STATUS_ERROR_BAD_REQUEST)
1097{
1098 /* request failed */
1099}
1100</code></pre>
1101 <p>A human-readable error message is also available using the <code>cupsLastErrorString</code> function:</p>
1102 <pre><code>if (cupsLastError() &gt;= IPP_STATUS_ERROR_BAD_REQUEST)
1103{
1104 /* request failed */
1105 printf(&quot;Request failed: %s\n&quot;, cupsLastErrorString());
1106}
1107</code></pre>
1108 <h3><a id="processing-the-ipp-response">Processing the IPP Response</a></h3>
1109 <p>Each response to an IPP request is also an IPP message (<code>ipp_t</code>) with its own IPP attributes (<code>ipp_attribute_t</code>) that includes a status code (<code>IPP_STATUS_OK</code>, <code>IPP_STATUS_ERROR_BAD_REQUEST</code>, etc.) and the corresponding 32-bit integer identifier from the request.</p>
1110 <p>For example, the following code finds the printer state attributes and prints their values:</p>
1111 <pre><code>ipp_attribute_t *attr;
1112
1113if ((attr = ippFindAttribute(response, &quot;printer-state&quot;,
1114 IPP_TAG_ENUM)) != NULL)
1115{
1116 printf(&quot;printer-state=%s\n&quot;,
db5424ea 1117 ippEnumString(&quot;printer-state&quot;, ippGetInteger(attr, 0)));
b0fb2d75
MS
1118}
1119else
1120 puts(&quot;printer-state=unknown&quot;);
1121
1122if ((attr = ippFindAttribute(response, &quot;printer-state-message&quot;,
1123 IPP_TAG_TEXT)) != NULL)
1124{
1125 printf(&quot;printer-state-message=\&quot;%s\&quot;\n&quot;,
1126 ippGetString(attr, 0, NULL)));
1127}
1128
1129if ((attr = ippFindAttribute(response, &quot;printer-state-reasons&quot;,
1130 IPP_TAG_KEYWORD)) != NULL)
1131{
1132 int i, count = ippGetCount(attr);
1133
1134 puts(&quot;printer-state-reasons=&quot;);
1135 for (i = 0; i &lt; count; i ++)
1136 printf(&quot; %s\n&quot;, ippGetString(attr, i, NULL)));
1137}
1138</code></pre>
1139 <p>The <code>ippGetCount</code> function returns the number of values in an attribute.</p>
1140 <p>The <code>ippGetInteger</code> and <code>ippGetString</code> functions return a single integer or string value from an attribute.</p>
db5424ea 1141 <p>The <code>ippEnumString</code> function converts a enum value to its keyword (string) equivalent.</p>
b0fb2d75
MS
1142 <p>Once you are done using the IPP response message, free it using the <code>ippDelete</code> function:</p>
1143 <pre><code>ippDelete(response);
1144</code></pre>
1145 <h3><a id="authentication">Authentication</a></h3>
1146 <p>CUPS normally handles authentication through the console. GUI applications should set a password callback using the <code>cupsSetPasswordCB2</code> function:</p>
1147 <pre><code>void
1148cupsSetPasswordCB2(cups_password_cb2_t cb, void *user_data);
1149</code></pre>
1150 <p>The password callback will be called when needed and is responsible for setting the current user name using <code>cupsSetUser</code> and returning a string:</p>
1151 <pre><code>const char *
1152cups_password_cb2(const char *prompt, http_t *http,
1153 const char *method, const char *resource,
1154 void *user_data);
1155</code></pre>
1156 <p>The <code>prompt</code> argument is a string from CUPS that should be displayed to the user.</p>
1157 <p>The <code>http</code> argument is the connection hosting the request that is being authenticated. The password callback can call the <code>httpGetField</code> and <code>httpGetSubField</code> functions to look for additional details concerning the authentication challenge.</p>
1158 <p>The <code>method</code> argument specifies the HTTP method used for the request and is typically &quot;POST&quot;.</p>
1159 <p>The <code>resource</code> argument specifies the path used for the request.</p>
1160 <p>The <code>user_data</code> argument provides the user data pointer from the <code>cupsSetPasswordCB2</code> call.</p>
798d6e29 1161 <h2 class="title"><a id="FUNCTIONS">Functions</a></h2>
73721e3e
MS
1162<h3 class="function"><a id="CF_OPTIONS">CF_OPTIONS</a></h3>
1163 <p class="description"></p>
1164<p class="code">
1165typedef CF_OPTIONS(uint32_t, SecKeyUsage);</p>
1166<h4 class="parameters">Parameters</h4>
1167<table class="list"><tbody>
1168<tr><th>uint32_t</th>
1169</tr>
1170<tr><th>SecKeyUsage</th>
1171</tr>
1172</tbody></table>
1173<h4 class="returnvalue">Return Value</h4>
1174 <p class="description"></p>
798d6e29
MS
1175<h3 class="function"><a id="cupsAddDest">cupsAddDest</a></h3>
1176 <p class="description">Add a destination to the list of destinations.</p>
1177<p class="code">
98d88c8d
MS
1178int cupsAddDest(const char *name, const char *instance, int num_dests, <a href="#cups_dest_t">cups_dest_t</a> **dests);</p>
1179<h4 class="parameters">Parameters</h4>
1180<table class="list"><tbody>
1181<tr><th>name</th>
1182 <td class="description">Destination name</td></tr>
1183<tr><th>instance</th>
1184 <td class="description">Instance name or <code>NULL</code> for none/primary</td></tr>
1185<tr><th>num_dests</th>
1186 <td class="description">Number of destinations</td></tr>
1187<tr><th>dests</th>
1188 <td class="description">Destinations</td></tr>
1189</tbody></table>
798d6e29
MS
1190<h4 class="returnvalue">Return Value</h4>
1191 <p class="description">New number of destinations</p>
1192<h4 class="discussion">Discussion</h4>
1193 <p class="discussion">This function cannot be used to add a new class or printer queue,
1194it only adds a new container of saved options for the named
1195destination or instance.<br>
1196<br>
1197If the named destination already exists, the destination list is
1198returned unchanged. Adding a new instance of a destination creates
1199a copy of that destination's options.<br>
1200<br>
1201Use the <a href="#cupsSaveDests"><code>cupsSaveDests</code></a> function to save the updated list of
1202destinations to the user's lpoptions file.</p>
63b75fbe
MS
1203<h3 class="function"><span class="info">&#160;CUPS 2.3&#160;</span><a id="cupsAddDestMediaOptions">cupsAddDestMediaOptions</a></h3>
1204 <p class="description">Add the option corresponding to the specified media size.</p>
1205<p class="code">
1206int cupsAddDestMediaOptions(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, unsigned flags, <a href="#cups_size_t">cups_size_t</a> *size, int num_options, <a href="#cups_option_t">cups_option_t</a> **options);</p>
1207<h4 class="parameters">Parameters</h4>
1208<table class="list"><tbody>
1209<tr><th>http</th>
1210 <td class="description">Connection to destination</td></tr>
1211<tr><th>dest</th>
1212 <td class="description">Destination</td></tr>
1213<tr><th>dinfo</th>
1214 <td class="description">Destination information</td></tr>
1215<tr><th>flags</th>
1216 <td class="description">Media matching flags</td></tr>
1217<tr><th>size</th>
1218 <td class="description">Media size</td></tr>
1219<tr><th>num_options</th>
1220 <td class="description">Current number of options</td></tr>
1221<tr><th>options</th>
1222 <td class="description">Options</td></tr>
1223</tbody></table>
1224<h4 class="returnvalue">Return Value</h4>
1225 <p class="description">New number of options</p>
98d88c8d 1226<h3 class="function"><span class="info">&#160;CUPS 2.2.4/macOS 10.13&#160;</span><a id="cupsAddIntegerOption">cupsAddIntegerOption</a></h3>
53af7f21 1227 <p class="description">Add an integer option to an option array.</p>
798d6e29 1228<p class="code">
98d88c8d
MS
1229int cupsAddIntegerOption(const char *name, int value, int num_options, <a href="#cups_option_t">cups_option_t</a> **options);</p>
1230<h4 class="parameters">Parameters</h4>
1231<table class="list"><tbody>
1232<tr><th>name</th>
1233 <td class="description">Name of option</td></tr>
1234<tr><th>value</th>
1235 <td class="description">Value of option</td></tr>
1236<tr><th>num_options</th>
1237 <td class="description">Number of options</td></tr>
1238<tr><th>options</th>
1239 <td class="description">Pointer to options</td></tr>
1240</tbody></table>
798d6e29
MS
1241<h4 class="returnvalue">Return Value</h4>
1242 <p class="description">Number of options</p>
1243<h4 class="discussion">Discussion</h4>
1244 <p class="discussion">New option arrays can be initialized simply by passing 0 for the
53af7f21 1245&quot;num_options&quot; parameter.
798d6e29
MS
1246
1247</p>
53af7f21
MS
1248<h3 class="function"><a id="cupsAddOption">cupsAddOption</a></h3>
1249 <p class="description">Add an option to an option array.</p>
798d6e29 1250<p class="code">
98d88c8d
MS
1251int cupsAddOption(const char *name, const char *value, int num_options, <a href="#cups_option_t">cups_option_t</a> **options);</p>
1252<h4 class="parameters">Parameters</h4>
1253<table class="list"><tbody>
1254<tr><th>name</th>
1255 <td class="description">Name of option</td></tr>
1256<tr><th>value</th>
1257 <td class="description">Value of option</td></tr>
1258<tr><th>num_options</th>
1259 <td class="description">Number of options</td></tr>
1260<tr><th>options</th>
1261 <td class="description">Pointer to options</td></tr>
1262</tbody></table>
798d6e29 1263<h4 class="returnvalue">Return Value</h4>
53af7f21 1264 <p class="description">Number of options</p>
798d6e29 1265<h4 class="discussion">Discussion</h4>
53af7f21
MS
1266 <p class="discussion">New option arrays can be initialized simply by passing 0 for the
1267&quot;num_options&quot; parameter.</p>
98d88c8d 1268<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCancelDestJob">cupsCancelDestJob</a></h3>
798d6e29 1269 <p class="description">Cancel a job on a destination.</p>
98d88c8d
MS
1270<p class="code">
1271ipp_status_t cupsCancelDestJob(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, int job_id);</p>
1272<h4 class="parameters">Parameters</h4>
1273<table class="list"><tbody>
1274<tr><th>http</th>
1275 <td class="description">Connection to destination</td></tr>
1276<tr><th>dest</th>
1277 <td class="description">Destination</td></tr>
1278<tr><th>job_id</th>
1279 <td class="description">Job ID</td></tr>
1280</tbody></table>
1281<h4 class="returnvalue">Return Value</h4>
1282 <p class="description">Status of cancel operation</p>
1283<h4 class="discussion">Discussion</h4>
798d6e29
MS
1284 <p class="discussion">The &quot;job_id&quot; is the number returned by cupsCreateDestJob.<br>
1285<br>
1286Returns <code>IPP_STATUS_OK</code> on success and
98d88c8d 1287<code>IPP_STATUS_ERROR_NOT_AUTHORIZED</code> or
798d6e29
MS
1288<code>IPP_STATUS_ERROR_FORBIDDEN</code> on failure.
1289
798d6e29
MS
1290</p>
1291<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCheckDestSupported">cupsCheckDestSupported</a></h3>
1292 <p class="description">Check that the option and value are supported
1293by the destination.</p>
1294<p class="code">
98d88c8d
MS
1295int cupsCheckDestSupported(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, const char *option, const char *value);</p>
1296<h4 class="parameters">Parameters</h4>
1297<table class="list"><tbody>
1298<tr><th>http</th>
1299 <td class="description">Connection to destination</td></tr>
1300<tr><th>dest</th>
1301 <td class="description">Destination</td></tr>
1302<tr><th>dinfo</th>
1303 <td class="description">Destination information</td></tr>
1304<tr><th>option</th>
1305 <td class="description">Option</td></tr>
1306<tr><th>value</th>
b0fb2d75 1307 <td class="description">Value or <code>NULL</code></td></tr>
98d88c8d 1308</tbody></table>
798d6e29
MS
1309<h4 class="returnvalue">Return Value</h4>
1310 <p class="description">1 if supported, 0 otherwise</p>
1311<h4 class="discussion">Discussion</h4>
1312 <p class="discussion">Returns 1 if supported, 0 otherwise.
1313
1314</p>
1315<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCloseDestJob">cupsCloseDestJob</a></h3>
1316 <p class="description">Close a job and start printing.</p>
1317<p class="code">
98d88c8d
MS
1318ipp_status_t cupsCloseDestJob(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *info, int job_id);</p>
1319<h4 class="parameters">Parameters</h4>
1320<table class="list"><tbody>
1321<tr><th>http</th>
1322 <td class="description">Connection to destination</td></tr>
1323<tr><th>dest</th>
1324 <td class="description">Destination</td></tr>
1325<tr><th>info</th>
1326 <td class="description">Destination information</td></tr>
1327<tr><th>job_id</th>
1328 <td class="description">Job ID</td></tr>
1329</tbody></table>
798d6e29
MS
1330<h4 class="returnvalue">Return Value</h4>
1331 <p class="description">IPP status code</p>
1332<h4 class="discussion">Discussion</h4>
1333 <p class="discussion">Use when the last call to cupsStartDocument passed 0 for &quot;last_document&quot;.
1334&quot;job_id&quot; is the job ID returned by cupsCreateDestJob. Returns <code>IPP_STATUS_OK</code>
1335on success.
1336
1337</p>
1338<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsConnectDest">cupsConnectDest</a></h3>
699fe020 1339 <p class="description">Open a connection to the destination.</p>
98d88c8d
MS
1340<p class="code">
1341<a href="#http_t">http_t</a> *cupsConnectDest(<a href="#cups_dest_t">cups_dest_t</a> *dest, unsigned flags, int msec, int *cancel, char *resource, size_t resourcesize, <a href="#cups_dest_cb_t">cups_dest_cb_t</a> cb, void *user_data);</p>
1342<h4 class="parameters">Parameters</h4>
1343<table class="list"><tbody>
1344<tr><th>dest</th>
1345 <td class="description">Destination</td></tr>
1346<tr><th>flags</th>
1347 <td class="description">Connection flags</td></tr>
1348<tr><th>msec</th>
1349 <td class="description">Timeout in milliseconds</td></tr>
1350<tr><th>cancel</th>
1351 <td class="description">Pointer to &quot;cancel&quot; variable</td></tr>
1352<tr><th>resource</th>
1353 <td class="description">Resource buffer</td></tr>
1354<tr><th>resourcesize</th>
1355 <td class="description">Size of resource buffer</td></tr>
1356<tr><th>cb</th>
1357 <td class="description">Callback function</td></tr>
1358<tr><th>user_data</th>
1359 <td class="description">User data pointer</td></tr>
1360</tbody></table>
1361<h4 class="returnvalue">Return Value</h4>
1362 <p class="description">Connection to destination or <code>NULL</code></p>
1363<h4 class="discussion">Discussion</h4>
1364 <p class="discussion">Connect to the destination, returning a new <code>http_t</code> connection object
1365and optionally the resource path to use for the destination. These calls
1366will block until a connection is made, the timeout expires, the integer
1367pointed to by &quot;cancel&quot; is non-zero, or the callback function (or block)
1368returns 0. The caller is responsible for calling <a href="#httpClose"><code>httpClose</code></a> on the
b0fb2d75
MS
1369returned connection.<br>
1370<br>
699fe020 1371Starting with CUPS 2.2.4, the caller can pass <code>CUPS_DEST_FLAGS_DEVICE</code>
b0fb2d75
MS
1372for the &quot;flags&quot; argument to connect directly to the device associated with
1373the destination. Otherwise, the connection is made to the CUPS scheduler
1374associated with the destination.
798d6e29
MS
1375
1376</p>
53af7f21
MS
1377<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCopyDest">cupsCopyDest</a></h3>
1378 <p class="description">Copy a destination.</p>
798d6e29 1379<p class="code">
98d88c8d
MS
1380int cupsCopyDest(<a href="#cups_dest_t">cups_dest_t</a> *dest, int num_dests, <a href="#cups_dest_t">cups_dest_t</a> **dests);</p>
1381<h4 class="parameters">Parameters</h4>
1382<table class="list"><tbody>
1383<tr><th>dest</th>
1384 <td class="description">Destination to copy</td></tr>
1385<tr><th>num_dests</th>
1386 <td class="description">Number of destinations</td></tr>
1387<tr><th>dests</th>
1388 <td class="description">Destination array</td></tr>
1389</tbody></table>
798d6e29
MS
1390<h4 class="returnvalue">Return Value</h4>
1391 <p class="description">New number of destinations</p>
1392<h4 class="discussion">Discussion</h4>
1393 <p class="discussion">Make a copy of the destination to an array of destinations (or just a single
1394copy) - for use with the cupsEnumDests* functions. The caller is responsible
1395for calling cupsFreeDests() on the returned object(s).
1396
1397</p>
1398<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCopyDestConflicts">cupsCopyDestConflicts</a></h3>
1399 <p class="description">Get conflicts and resolutions for a new
1400option/value pair.</p>
1401<p class="code">
98d88c8d
MS
1402int cupsCopyDestConflicts(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, int num_options, <a href="#cups_option_t">cups_option_t</a> *options, const char *new_option, const char *new_value, int *num_conflicts, <a href="#cups_option_t">cups_option_t</a> **conflicts, int *num_resolved, <a href="#cups_option_t">cups_option_t</a> **resolved);</p>
1403<h4 class="parameters">Parameters</h4>
1404<table class="list"><tbody>
1405<tr><th>http</th>
1406 <td class="description">Connection to destination</td></tr>
1407<tr><th>dest</th>
1408 <td class="description">Destination</td></tr>
1409<tr><th>dinfo</th>
1410 <td class="description">Destination information</td></tr>
1411<tr><th>num_options</th>
1412 <td class="description">Number of current options</td></tr>
1413<tr><th>options</th>
1414 <td class="description">Current options</td></tr>
1415<tr><th>new_option</th>
1416 <td class="description">New option</td></tr>
1417<tr><th>new_value</th>
1418 <td class="description">New value</td></tr>
1419<tr><th>num_conflicts</th>
1420 <td class="description">Number of conflicting options</td></tr>
1421<tr><th>conflicts</th>
1422 <td class="description">Conflicting options</td></tr>
1423<tr><th>num_resolved</th>
1424 <td class="description">Number of options to resolve</td></tr>
1425<tr><th>resolved</th>
1426 <td class="description">Resolved options</td></tr>
1427</tbody></table>
798d6e29
MS
1428<h4 class="returnvalue">Return Value</h4>
1429 <p class="description">1 if there is a conflict, 0 if none, -1 on error</p>
1430<h4 class="discussion">Discussion</h4>
1431 <p class="discussion">&quot;num_options&quot; and &quot;options&quot; represent the currently selected options by the
1432user. &quot;new_option&quot; and &quot;new_value&quot; are the setting the user has just
1433changed.<br>
1434<br>
1435Returns 1 if there is a conflict, 0 if there are no conflicts, and -1 if
1436there was an unrecoverable error such as a resolver loop.<br>
1437<br>
1438If &quot;num_conflicts&quot; and &quot;conflicts&quot; are not <code>NULL</code>, they are set to
1439contain the list of conflicting option/value pairs. Similarly, if
1440&quot;num_resolved&quot; and &quot;resolved&quot; are not <code>NULL</code> they will be set to the
1441list of changes needed to resolve the conflict.<br>
1442<br>
1443If cupsCopyDestConflicts returns 1 but &quot;num_resolved&quot; and &quot;resolved&quot; are set
1444to 0 and <code>NULL</code>, respectively, then the conflict cannot be resolved.
1445
1446</p>
1447<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCopyDestInfo">cupsCopyDestInfo</a></h3>
1448 <p class="description">Get the supported values/capabilities for the
1449destination.</p>
1450<p class="code">
98d88c8d 1451<a href="#cups_dinfo_t">cups_dinfo_t</a> *cupsCopyDestInfo(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest);</p>
798d6e29 1452<h4 class="parameters">Parameters</h4>
98d88c8d
MS
1453<table class="list"><tbody>
1454<tr><th>http</th>
1455 <td class="description">Connection to destination</td></tr>
1456<tr><th>dest</th>
1457 <td class="description">Destination</td></tr>
1458</tbody></table>
798d6e29
MS
1459<h4 class="returnvalue">Return Value</h4>
1460 <p class="description">Destination information</p>
1461<h4 class="discussion">Discussion</h4>
1462 <p class="discussion">The caller is responsible for calling <a href="#cupsFreeDestInfo"><code>cupsFreeDestInfo</code></a> on the return
1463value. <code>NULL</code> is returned on error.
1464
1465</p>
1466<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCreateDestJob">cupsCreateDestJob</a></h3>
1467 <p class="description">Create a job on a destination.</p>
1468<p class="code">
98d88c8d
MS
1469ipp_status_t cupsCreateDestJob(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *info, int *job_id, const char *title, int num_options, <a href="#cups_option_t">cups_option_t</a> *options);</p>
1470<h4 class="parameters">Parameters</h4>
1471<table class="list"><tbody>
1472<tr><th>http</th>
1473 <td class="description">Connection to destination</td></tr>
1474<tr><th>dest</th>
1475 <td class="description">Destination</td></tr>
1476<tr><th>info</th>
1477 <td class="description">Destination information</td></tr>
1478<tr><th>job_id</th>
1479 <td class="description">Job ID or 0 on error</td></tr>
1480<tr><th>title</th>
1481 <td class="description">Job name</td></tr>
1482<tr><th>num_options</th>
1483 <td class="description">Number of job options</td></tr>
1484<tr><th>options</th>
1485 <td class="description">Job options</td></tr>
1486</tbody></table>
798d6e29
MS
1487<h4 class="returnvalue">Return Value</h4>
1488 <p class="description">IPP status code</p>
1489<h4 class="discussion">Discussion</h4>
1490 <p class="discussion">Returns <code>IPP_STATUS_OK</code> or <code>IPP_STATUS_OK_SUBST</code> on success, saving the job ID
1491in the variable pointed to by &quot;job_id&quot;.
1492
1493</p>
798d6e29
MS
1494<h3 class="function"><span class="info">&#160;CUPS 1.1.20/macOS 10.4&#160;</span><a id="cupsDoAuthentication">cupsDoAuthentication</a></h3>
1495 <p class="description">Authenticate a request.</p>
1496<p class="code">
98d88c8d
MS
1497int cupsDoAuthentication(<a href="#http_t">http_t</a> *http, const char *method, const char *resource);</p>
1498<h4 class="parameters">Parameters</h4>
1499<table class="list"><tbody>
1500<tr><th>http</th>
1501 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
1502<tr><th>method</th>
1503 <td class="description">Request method (&quot;GET&quot;, &quot;POST&quot;, &quot;PUT&quot;)</td></tr>
1504<tr><th>resource</th>
1505 <td class="description">Resource path</td></tr>
1506</tbody></table>
798d6e29
MS
1507<h4 class="returnvalue">Return Value</h4>
1508 <p class="description">0 on success, -1 on error</p>
1509<h4 class="discussion">Discussion</h4>
1510 <p class="discussion">This function should be called in response to a <code>HTTP_STATUS_UNAUTHORIZED</code>
1511status, prior to resubmitting your request.
1512
1513</p>
ddf2ec73
MS
1514<h3 class="function"><span class="info">&#160;CUPS 2.3&#160;</span><a id="cupsEncodeOption">cupsEncodeOption</a></h3>
1515 <p class="description">Encode a single option into an IPP attribute.</p>
1516<p class="code">
1517<a href="#ipp_attribute_t">ipp_attribute_t</a> *cupsEncodeOption(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group_tag, const char *name, const char *value);</p>
1518<h4 class="parameters">Parameters</h4>
1519<table class="list"><tbody>
1520<tr><th>ipp</th>
1521 <td class="description">IPP request/response</td></tr>
1522<tr><th>group_tag</th>
1523 <td class="description">Attribute group</td></tr>
1524<tr><th>name</th>
1525 <td class="description">Option name</td></tr>
1526<tr><th>value</th>
1527 <td class="description">Option string value</td></tr>
1528</tbody></table>
1529<h4 class="returnvalue">Return Value</h4>
1530 <p class="description">New attribute or <code>NULL</code> on error</p>
798d6e29 1531<h3 class="function"><a id="cupsEncodeOptions">cupsEncodeOptions</a></h3>
53af7f21 1532 <p class="description">Encode printer options into IPP attributes.</p>
98d88c8d
MS
1533<p class="code">
1534void cupsEncodeOptions(<a href="#ipp_t">ipp_t</a> *ipp, int num_options, <a href="#cups_option_t">cups_option_t</a> *options);</p>
1535<h4 class="parameters">Parameters</h4>
1536<table class="list"><tbody>
1537<tr><th>ipp</th>
ddf2ec73 1538 <td class="description">IPP request/response</td></tr>
98d88c8d
MS
1539<tr><th>num_options</th>
1540 <td class="description">Number of options</td></tr>
1541<tr><th>options</th>
1542 <td class="description">Options</td></tr>
1543</tbody></table>
1544<h4 class="discussion">Discussion</h4>
798d6e29 1545 <p class="discussion">This function adds operation, job, and then subscription attributes,
98d88c8d
MS
1546in that order. Use the <a href="#cupsEncodeOptions2"><code>cupsEncodeOptions2</code></a> function to add attributes
1547for a single group.</p>
1548<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="cupsEncodeOptions2">cupsEncodeOptions2</a></h3>
53af7f21 1549 <p class="description">Encode printer options into IPP attributes for a group.</p>
98d88c8d
MS
1550<p class="code">
1551void cupsEncodeOptions2(<a href="#ipp_t">ipp_t</a> *ipp, int num_options, <a href="#cups_option_t">cups_option_t</a> *options, ipp_tag_t group_tag);</p>
1552<h4 class="parameters">Parameters</h4>
1553<table class="list"><tbody>
1554<tr><th>ipp</th>
ddf2ec73 1555 <td class="description">IPP request/response</td></tr>
98d88c8d
MS
1556<tr><th>num_options</th>
1557 <td class="description">Number of options</td></tr>
1558<tr><th>options</th>
1559 <td class="description">Options</td></tr>
1560<tr><th>group_tag</th>
1561 <td class="description">Group to encode</td></tr>
1562</tbody></table>
1563<h4 class="discussion">Discussion</h4>
798d6e29 1564 <p class="discussion">This function only adds attributes for a single group. Call this
98d88c8d 1565function multiple times for each group, or use <a href="#cupsEncodeOptions"><code>cupsEncodeOptions</code></a>
798d6e29
MS
1566to add the standard groups.
1567
1568</p>
1569<h3 class="function"><a id="cupsEncryption">cupsEncryption</a></h3>
1570 <p class="description">Get the current encryption settings.</p>
1571<p class="code">
98d88c8d 1572<a href="#http_encryption_t">http_encryption_t</a> cupsEncryption(void);</p>
798d6e29
MS
1573<h4 class="returnvalue">Return Value</h4>
1574 <p class="description">Encryption settings</p>
1575<h4 class="discussion">Discussion</h4>
1576 <p class="discussion">The default encryption setting comes from the CUPS_ENCRYPTION
1577environment variable, then the ~/.cups/client.conf file, and finally the
1578/etc/cups/client.conf file. If not set, the default is
1579<code>HTTP_ENCRYPTION_IF_REQUESTED</code>.<br>
1580<br>
1581Note: The current encryption setting is tracked separately for each thread
1582in a program. Multi-threaded programs that override the setting via the
1583<a href="#cupsSetEncryption"><code>cupsSetEncryption</code></a> function need to do so in each thread for the same
1584setting to be used.</p>
1585<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsEnumDests">cupsEnumDests</a></h3>
1586 <p class="description">Enumerate available destinations with a callback function.</p>
1587<p class="code">
98d88c8d
MS
1588int cupsEnumDests(unsigned flags, int msec, int *cancel, <a href="#cups_ptype_t">cups_ptype_t</a> type, <a href="#cups_ptype_t">cups_ptype_t</a> mask, <a href="#cups_dest_cb_t">cups_dest_cb_t</a> cb, void *user_data);</p>
1589<h4 class="parameters">Parameters</h4>
1590<table class="list"><tbody>
1591<tr><th>flags</th>
1592 <td class="description">Enumeration flags</td></tr>
1593<tr><th>msec</th>
1594 <td class="description">Timeout in milliseconds, -1 for indefinite</td></tr>
1595<tr><th>cancel</th>
1596 <td class="description">Pointer to &quot;cancel&quot; variable</td></tr>
1597<tr><th>type</th>
1598 <td class="description">Printer type bits</td></tr>
1599<tr><th>mask</th>
1600 <td class="description">Mask for printer type bits</td></tr>
1601<tr><th>cb</th>
1602 <td class="description">Callback function</td></tr>
1603<tr><th>user_data</th>
1604 <td class="description">User data</td></tr>
1605</tbody></table>
798d6e29
MS
1606<h4 class="returnvalue">Return Value</h4>
1607 <p class="description">1 on success, 0 on failure</p>
1608<h4 class="discussion">Discussion</h4>
53af7f21
MS
1609 <p class="discussion">Destinations are enumerated from one or more sources. The callback function
1610receives the <code>user_data</code> pointer and the destination pointer which can
1611be used as input to the <a href="#cupsCopyDest"><code>cupsCopyDest</code></a> function. The function must
1612return 1 to continue enumeration or 0 to stop.<br>
798d6e29 1613<br>
53af7f21
MS
1614The <code>type</code> and <code>mask</code> arguments allow the caller to filter the
1615destinations that are enumerated. Passing 0 for both will enumerate all
1616printers. The constant <code>CUPS_PRINTER_DISCOVERED</code> is used to filter on
1617destinations that are available but have not yet been added locally.<br>
798d6e29
MS
1618<br>
1619Enumeration happens on the current thread and does not return until all
718ee2ff
MS
1620destinations have been enumerated or the callback function returns 0.<br>
1621<br>
1622Note: The callback function will likely receive multiple updates for the same
1623destinations - it is up to the caller to suppress any duplicate destinations.
798d6e29
MS
1624
1625</p>
798d6e29
MS
1626<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsFindDestDefault">cupsFindDestDefault</a></h3>
1627 <p class="description">Find the default value(s) for the given option.</p>
1628<p class="code">
98d88c8d
MS
1629<a href="#ipp_attribute_t">ipp_attribute_t</a> *cupsFindDestDefault(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, const char *option);</p>
1630<h4 class="parameters">Parameters</h4>
1631<table class="list"><tbody>
1632<tr><th>http</th>
1633 <td class="description">Connection to destination</td></tr>
1634<tr><th>dest</th>
1635 <td class="description">Destination</td></tr>
1636<tr><th>dinfo</th>
1637 <td class="description">Destination information</td></tr>
1638<tr><th>option</th>
1639 <td class="description">Option/attribute name</td></tr>
1640</tbody></table>
798d6e29
MS
1641<h4 class="returnvalue">Return Value</h4>
1642 <p class="description">Default attribute or <code>NULL</code> for none</p>
1643<h4 class="discussion">Discussion</h4>
1644 <p class="discussion">The returned value is an IPP attribute. Use the <code>ippGetBoolean</code>,
1645<code>ippGetCollection</code>, <code>ippGetCount</code>, <code>ippGetDate</code>,
1646<code>ippGetInteger</code>, <code>ippGetOctetString</code>, <code>ippGetRange</code>,
1647<code>ippGetResolution</code>, <code>ippGetString</code>, and <code>ippGetValueTag</code>
1648functions to inspect the default value(s) as needed.
1649
1650</p>
1651<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsFindDestReady">cupsFindDestReady</a></h3>
1652 <p class="description">Find the default value(s) for the given option.</p>
1653<p class="code">
98d88c8d
MS
1654<a href="#ipp_attribute_t">ipp_attribute_t</a> *cupsFindDestReady(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, const char *option);</p>
1655<h4 class="parameters">Parameters</h4>
1656<table class="list"><tbody>
1657<tr><th>http</th>
1658 <td class="description">Connection to destination</td></tr>
1659<tr><th>dest</th>
1660 <td class="description">Destination</td></tr>
1661<tr><th>dinfo</th>
1662 <td class="description">Destination information</td></tr>
1663<tr><th>option</th>
1664 <td class="description">Option/attribute name</td></tr>
1665</tbody></table>
798d6e29
MS
1666<h4 class="returnvalue">Return Value</h4>
1667 <p class="description">Default attribute or <code>NULL</code> for none</p>
1668<h4 class="discussion">Discussion</h4>
1669 <p class="discussion">The returned value is an IPP attribute. Use the <code>ippGetBoolean</code>,
1670<code>ippGetCollection</code>, <code>ippGetCount</code>, <code>ippGetDate</code>,
1671<code>ippGetInteger</code>, <code>ippGetOctetString</code>, <code>ippGetRange</code>,
1672<code>ippGetResolution</code>, <code>ippGetString</code>, and <code>ippGetValueTag</code>
1673functions to inspect the default value(s) as needed.
1674
1675</p>
1676<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsFindDestSupported">cupsFindDestSupported</a></h3>
1677 <p class="description">Find the default value(s) for the given option.</p>
1678<p class="code">
98d88c8d
MS
1679<a href="#ipp_attribute_t">ipp_attribute_t</a> *cupsFindDestSupported(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, const char *option);</p>
1680<h4 class="parameters">Parameters</h4>
1681<table class="list"><tbody>
1682<tr><th>http</th>
1683 <td class="description">Connection to destination</td></tr>
1684<tr><th>dest</th>
1685 <td class="description">Destination</td></tr>
1686<tr><th>dinfo</th>
1687 <td class="description">Destination information</td></tr>
1688<tr><th>option</th>
1689 <td class="description">Option/attribute name</td></tr>
1690</tbody></table>
798d6e29
MS
1691<h4 class="returnvalue">Return Value</h4>
1692 <p class="description">Default attribute or <code>NULL</code> for none</p>
1693<h4 class="discussion">Discussion</h4>
1694 <p class="discussion">The returned value is an IPP attribute. Use the <code>ippGetBoolean</code>,
1695<code>ippGetCollection</code>, <code>ippGetCount</code>, <code>ippGetDate</code>,
1696<code>ippGetInteger</code>, <code>ippGetOctetString</code>, <code>ippGetRange</code>,
1697<code>ippGetResolution</code>, <code>ippGetString</code>, and <code>ippGetValueTag</code>
1698functions to inspect the default value(s) as needed.
1699
1700</p>
1701<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsFinishDestDocument">cupsFinishDestDocument</a></h3>
1702 <p class="description">Finish the current document.</p>
1703<p class="code">
98d88c8d
MS
1704ipp_status_t cupsFinishDestDocument(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *info);</p>
1705<h4 class="parameters">Parameters</h4>
1706<table class="list"><tbody>
1707<tr><th>http</th>
1708 <td class="description">Connection to destination</td></tr>
1709<tr><th>dest</th>
1710 <td class="description">Destination</td></tr>
1711<tr><th>info</th>
1712 <td class="description">Destination information</td></tr>
1713</tbody></table>
798d6e29
MS
1714<h4 class="returnvalue">Return Value</h4>
1715 <p class="description">Status of document submission</p>
1716<h4 class="discussion">Discussion</h4>
1717 <p class="discussion">Returns <code>IPP_STATUS_OK</code> or <code>IPP_STATUS_OK_SUBST</code> on success.
1718
798d6e29 1719</p>
98d88c8d 1720<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsFreeDestInfo">cupsFreeDestInfo</a></h3>
53af7f21
MS
1721 <p class="description">Free destination information obtained using
1722<a href="#cupsCopyDestInfo"><code>cupsCopyDestInfo</code></a>.</p>
798d6e29 1723<p class="code">
98d88c8d 1724void cupsFreeDestInfo(<a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo);</p>
798d6e29 1725<h4 class="parameters">Parameters</h4>
98d88c8d
MS
1726<table class="list"><tbody>
1727<tr><th>dinfo</th>
1728 <td class="description">Destination information</td></tr>
1729</tbody></table>
1730<h3 class="function"><a id="cupsFreeDests">cupsFreeDests</a></h3>
53af7f21 1731 <p class="description">Free the memory used by the list of destinations.</p>
798d6e29 1732<p class="code">
98d88c8d 1733void cupsFreeDests(int num_dests, <a href="#cups_dest_t">cups_dest_t</a> *dests);</p>
798d6e29 1734<h4 class="parameters">Parameters</h4>
98d88c8d
MS
1735<table class="list"><tbody>
1736<tr><th>num_dests</th>
1737 <td class="description">Number of destinations</td></tr>
1738<tr><th>dests</th>
1739 <td class="description">Destinations</td></tr>
1740</tbody></table>
1741<h3 class="function"><a id="cupsFreeJobs">cupsFreeJobs</a></h3>
53af7f21 1742 <p class="description">Free memory used by job data.</p>
798d6e29 1743<p class="code">
98d88c8d 1744void cupsFreeJobs(int num_jobs, <a href="#cups_job_t">cups_job_t</a> *jobs);</p>
798d6e29 1745<h4 class="parameters">Parameters</h4>
98d88c8d
MS
1746<table class="list"><tbody>
1747<tr><th>num_jobs</th>
1748 <td class="description">Number of jobs</td></tr>
1749<tr><th>jobs</th>
1750 <td class="description">Jobs</td></tr>
1751</tbody></table>
1752<h3 class="function"><a id="cupsFreeOptions">cupsFreeOptions</a></h3>
53af7f21 1753 <p class="description">Free all memory used by options.</p>
98d88c8d
MS
1754<p class="code">
1755void cupsFreeOptions(int num_options, <a href="#cups_option_t">cups_option_t</a> *options);</p>
1756<h4 class="parameters">Parameters</h4>
1757<table class="list"><tbody>
1758<tr><th>num_options</th>
1759 <td class="description">Number of options</td></tr>
1760<tr><th>options</th>
1761 <td class="description">Pointer to options</td></tr>
1762</tbody></table>
798d6e29
MS
1763<h3 class="function"><a id="cupsGetDest">cupsGetDest</a></h3>
1764 <p class="description">Get the named destination from the list.</p>
1765<p class="code">
98d88c8d
MS
1766<a href="#cups_dest_t">cups_dest_t</a> *cupsGetDest(const char *name, const char *instance, int num_dests, <a href="#cups_dest_t">cups_dest_t</a> *dests);</p>
1767<h4 class="parameters">Parameters</h4>
1768<table class="list"><tbody>
1769<tr><th>name</th>
1770 <td class="description">Destination name or <code>NULL</code> for the default destination</td></tr>
1771<tr><th>instance</th>
1772 <td class="description">Instance name or <code>NULL</code></td></tr>
1773<tr><th>num_dests</th>
1774 <td class="description">Number of destinations</td></tr>
1775<tr><th>dests</th>
1776 <td class="description">Destinations</td></tr>
1777</tbody></table>
798d6e29
MS
1778<h4 class="returnvalue">Return Value</h4>
1779 <p class="description">Destination pointer or <code>NULL</code></p>
1780<h4 class="discussion">Discussion</h4>
98d88c8d 1781 <p class="discussion">Use the <a href="#cupsEnumDests"><code>cupsEnumDests</code></a> or <a href="#cupsGetDests2"><code>cupsGetDests2</code></a> functions to get a
798d6e29
MS
1782list of supported destinations for the current user.</p>
1783<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsGetDestMediaByIndex">cupsGetDestMediaByIndex</a></h3>
1784 <p class="description">Get a media name, dimension, and margins for a
1785specific size.</p>
1786<p class="code">
98d88c8d
MS
1787int cupsGetDestMediaByIndex(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, int n, unsigned flags, <a href="#cups_size_t">cups_size_t</a> *size);</p>
1788<h4 class="parameters">Parameters</h4>
1789<table class="list"><tbody>
1790<tr><th>http</th>
1791 <td class="description">Connection to destination</td></tr>
1792<tr><th>dest</th>
1793 <td class="description">Destination</td></tr>
1794<tr><th>dinfo</th>
1795 <td class="description">Destination information</td></tr>
1796<tr><th>n</th>
1797 <td class="description">Media size number (0-based)</td></tr>
1798<tr><th>flags</th>
1799 <td class="description">Media flags</td></tr>
1800<tr><th>size</th>
1801 <td class="description">Media size information</td></tr>
1802</tbody></table>
798d6e29
MS
1803<h4 class="returnvalue">Return Value</h4>
1804 <p class="description">1 on success, 0 on failure</p>
1805<h4 class="discussion">Discussion</h4>
1806 <p class="discussion">The <code>flags</code> parameter determines which set of media are indexed. For
1807example, passing <code>CUPS_MEDIA_FLAGS_BORDERLESS</code> will get the Nth
1808borderless size supported by the printer.
1809
1810</p>
1811<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsGetDestMediaByName">cupsGetDestMediaByName</a></h3>
1812 <p class="description">Get media names, dimensions, and margins.</p>
1813<p class="code">
98d88c8d
MS
1814int cupsGetDestMediaByName(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, const char *media, unsigned flags, <a href="#cups_size_t">cups_size_t</a> *size);</p>
1815<h4 class="parameters">Parameters</h4>
1816<table class="list"><tbody>
1817<tr><th>http</th>
1818 <td class="description">Connection to destination</td></tr>
1819<tr><th>dest</th>
1820 <td class="description">Destination</td></tr>
1821<tr><th>dinfo</th>
1822 <td class="description">Destination information</td></tr>
1823<tr><th>media</th>
1824 <td class="description">Media name</td></tr>
1825<tr><th>flags</th>
1826 <td class="description">Media matching flags</td></tr>
1827<tr><th>size</th>
1828 <td class="description">Media size information</td></tr>
1829</tbody></table>
798d6e29
MS
1830<h4 class="returnvalue">Return Value</h4>
1831 <p class="description">1 on match, 0 on failure</p>
1832<h4 class="discussion">Discussion</h4>
1833 <p class="discussion">The &quot;media&quot; string is a PWG media name. &quot;Flags&quot; provides some matching
1834guidance (multiple flags can be combined):<br>
1835<br>
1836CUPS_MEDIA_FLAGS_DEFAULT = find the closest size supported by the printer,
1837CUPS_MEDIA_FLAGS_BORDERLESS = find a borderless size,
1838CUPS_MEDIA_FLAGS_DUPLEX = find a size compatible with 2-sided printing,
1839CUPS_MEDIA_FLAGS_EXACT = find an exact match for the size, and
1840CUPS_MEDIA_FLAGS_READY = if the printer supports media sensing, find the
1841size amongst the &quot;ready&quot; media.<br>
1842<br>
1843The matching result (if any) is returned in the &quot;cups_size_t&quot; structure.<br>
1844<br>
1845Returns 1 when there is a match and 0 if there is not a match.
1846
1847</p>
1848<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsGetDestMediaBySize">cupsGetDestMediaBySize</a></h3>
1849 <p class="description">Get media names, dimensions, and margins.</p>
1850<p class="code">
98d88c8d
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1851int cupsGetDestMediaBySize(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, int width, int length, unsigned flags, <a href="#cups_size_t">cups_size_t</a> *size);</p>
1852<h4 class="parameters">Parameters</h4>
1853<table class="list"><tbody>
1854<tr><th>http</th>
1855 <td class="description">Connection to destination</td></tr>
1856<tr><th>dest</th>
1857 <td class="description">Destination</td></tr>
1858<tr><th>dinfo</th>
1859 <td class="description">Destination information</td></tr>
1860<tr><th>width</th>
1861 <td class="description">Media width in hundredths of
1862of millimeters</td></tr>
1863<tr><th>length</th>
1864 <td class="description">Media length in hundredths of
1865of millimeters</td></tr>
1866<tr><th>flags</th>
1867 <td class="description">Media matching flags</td></tr>
1868<tr><th>size</th>
1869 <td class="description">Media size information</td></tr>
1870</tbody></table>
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1871<h4 class="returnvalue">Return Value</h4>
1872 <p class="description">1 on match, 0 on failure</p>
1873<h4 class="discussion">Discussion</h4>
1874 <p class="discussion">&quot;Width&quot; and &quot;length&quot; are the dimensions in hundredths of millimeters.
1875&quot;Flags&quot; provides some matching guidance (multiple flags can be combined):<br>
1876<br>
1877CUPS_MEDIA_FLAGS_DEFAULT = find the closest size supported by the printer,
1878CUPS_MEDIA_FLAGS_BORDERLESS = find a borderless size,
1879CUPS_MEDIA_FLAGS_DUPLEX = find a size compatible with 2-sided printing,
1880CUPS_MEDIA_FLAGS_EXACT = find an exact match for the size, and
1881CUPS_MEDIA_FLAGS_READY = if the printer supports media sensing, find the
1882size amongst the &quot;ready&quot; media.<br>
1883<br>
1884The matching result (if any) is returned in the &quot;cups_size_t&quot; structure.<br>
1885<br>
1886Returns 1 when there is a match and 0 if there is not a match.
1887
1888</p>
1889<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsGetDestMediaCount">cupsGetDestMediaCount</a></h3>
1890 <p class="description">Get the number of sizes supported by a
1891destination.</p>
1892<p class="code">
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1893int cupsGetDestMediaCount(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, unsigned flags);</p>
1894<h4 class="parameters">Parameters</h4>
1895<table class="list"><tbody>
1896<tr><th>http</th>
1897 <td class="description">Connection to destination</td></tr>
1898<tr><th>dest</th>
1899 <td class="description">Destination</td></tr>
1900<tr><th>dinfo</th>
1901 <td class="description">Destination information</td></tr>
1902<tr><th>flags</th>
1903 <td class="description">Media flags</td></tr>
1904</tbody></table>
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1905<h4 class="returnvalue">Return Value</h4>
1906 <p class="description">Number of sizes</p>
1907<h4 class="discussion">Discussion</h4>
1908 <p class="discussion">The <code>flags</code> parameter determines the set of media sizes that are
1909counted. For example, passing <code>CUPS_MEDIA_FLAGS_BORDERLESS</code> will return
1910the number of borderless sizes.
1911
1912</p>
1913<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsGetDestMediaDefault">cupsGetDestMediaDefault</a></h3>
1914 <p class="description">Get the default size for a destination.</p>
1915<p class="code">
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1916int cupsGetDestMediaDefault(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, unsigned flags, <a href="#cups_size_t">cups_size_t</a> *size);</p>
1917<h4 class="parameters">Parameters</h4>
1918<table class="list"><tbody>
1919<tr><th>http</th>
1920 <td class="description">Connection to destination</td></tr>
1921<tr><th>dest</th>
1922 <td class="description">Destination</td></tr>
1923<tr><th>dinfo</th>
1924 <td class="description">Destination information</td></tr>
1925<tr><th>flags</th>
1926 <td class="description">Media flags</td></tr>
1927<tr><th>size</th>
1928 <td class="description">Media size information</td></tr>
1929</tbody></table>
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1930<h4 class="returnvalue">Return Value</h4>
1931 <p class="description">1 on success, 0 on failure</p>
1932<h4 class="discussion">Discussion</h4>
1933 <p class="discussion">The <code>flags</code> parameter determines which default size is returned. For
1934example, passing <code>CUPS_MEDIA_FLAGS_BORDERLESS</code> will return the default
1935borderless size, typically US Letter or A4, but sometimes 4x6 photo media.
1936
1937</p>
1938<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="cupsGetDestWithURI">cupsGetDestWithURI</a></h3>
1939 <p class="description">Get a destination associated with a URI.</p>
1940<p class="code">
98d88c8d 1941<a href="#cups_dest_t">cups_dest_t</a> *cupsGetDestWithURI(const char *name, const char *uri);</p>
798d6e29 1942<h4 class="parameters">Parameters</h4>
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1943<table class="list"><tbody>
1944<tr><th>name</th>
1945 <td class="description">Desired printer name or <code>NULL</code></td></tr>
1946<tr><th>uri</th>
1947 <td class="description">URI for the printer</td></tr>
1948</tbody></table>
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1949<h4 class="returnvalue">Return Value</h4>
1950 <p class="description">Destination or <code>NULL</code></p>
1951<h4 class="discussion">Discussion</h4>
1952 <p class="discussion">&quot;name&quot; is the desired name for the printer. If <code>NULL</code>, a name will be
1953created using the URI.<br>
1954<br>
1955&quot;uri&quot; is the &quot;ipp&quot; or &quot;ipps&quot; URI for the printer.
1956
1957</p>
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1958<h3 class="function"><span class="info">&#160;CUPS 1.1.21/macOS 10.4&#160;</span><a id="cupsGetDests2">cupsGetDests2</a></h3>
1959 <p class="description">Get the list of destinations from the specified server.</p>
1960<p class="code">
1961int cupsGetDests2(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> **dests);</p>
1962<h4 class="parameters">Parameters</h4>
1963<table class="list"><tbody>
1964<tr><th>http</th>
1965 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
1966<tr><th>dests</th>
1967 <td class="description">Destinations</td></tr>
1968</tbody></table>
1969<h4 class="returnvalue">Return Value</h4>
1970 <p class="description">Number of destinations</p>
1971<h4 class="discussion">Discussion</h4>
1972 <p class="discussion">Starting with CUPS 1.2, the returned list of destinations include the
1973&quot;printer-info&quot;, &quot;printer-is-accepting-jobs&quot;, &quot;printer-is-shared&quot;,
1974&quot;printer-make-and-model&quot;, &quot;printer-state&quot;, &quot;printer-state-change-time&quot;,
1975&quot;printer-state-reasons&quot;, &quot;printer-type&quot;, and &quot;printer-uri-supported&quot;
1976attributes as options.<br>
1977<br>
1978CUPS 1.4 adds the &quot;marker-change-time&quot;, &quot;marker-colors&quot;,
1979&quot;marker-high-levels&quot;, &quot;marker-levels&quot;, &quot;marker-low-levels&quot;, &quot;marker-message&quot;,
1980&quot;marker-names&quot;, &quot;marker-types&quot;, and &quot;printer-commands&quot; attributes as options.<br>
1981<br>
1982CUPS 2.2 adds accessible IPP printers to the list of destinations that can
1983be used. The &quot;printer-uri-supported&quot; option will be present for those IPP
1984printers that have been recently used.<br>
1985<br>
1986Use the <a href="#cupsFreeDests"><code>cupsFreeDests</code></a> function to free the destination list and
1987the <a href="#cupsGetDest"><code>cupsGetDest</code></a> function to find a particular destination.
1988
1989</p>
1990<h3 class="function"><span class="info">&#160;CUPS 2.2.4/macOS 10.13&#160;</span><a id="cupsGetIntegerOption">cupsGetIntegerOption</a></h3>
53af7f21 1991 <p class="description">Get an integer option value.</p>
798d6e29 1992<p class="code">
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MS
1993int cupsGetIntegerOption(const char *name, int num_options, <a href="#cups_option_t">cups_option_t</a> *options);</p>
1994<h4 class="parameters">Parameters</h4>
1995<table class="list"><tbody>
1996<tr><th>name</th>
1997 <td class="description">Name of option</td></tr>
1998<tr><th>num_options</th>
1999 <td class="description">Number of options</td></tr>
2000<tr><th>options</th>
2001 <td class="description">Options</td></tr>
2002</tbody></table>
798d6e29 2003<h4 class="returnvalue">Return Value</h4>
53af7f21 2004 <p class="description">Option value or <code>INT_MIN</code></p>
798d6e29 2005<h4 class="discussion">Discussion</h4>
53af7f21
MS
2006 <p class="discussion">INT_MIN is returned when the option does not exist, is not an integer, or
2007exceeds the range of values for the &quot;int&quot; type.
2008
2009</p>
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2010<h3 class="function"><span class="info">&#160;CUPS 1.1.21/macOS 10.4&#160;</span><a id="cupsGetJobs2">cupsGetJobs2</a></h3>
2011 <p class="description">Get the jobs from the specified server.</p>
2012<p class="code">
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MS
2013int cupsGetJobs2(<a href="#http_t">http_t</a> *http, <a href="#cups_job_t">cups_job_t</a> **jobs, const char *name, int myjobs, int whichjobs);</p>
2014<h4 class="parameters">Parameters</h4>
2015<table class="list"><tbody>
2016<tr><th>http</th>
2017 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
2018<tr><th>jobs</th>
2019 <td class="description">Job data</td></tr>
2020<tr><th>name</th>
2021 <td class="description"><code>NULL</code> = all destinations, otherwise show jobs for named destination</td></tr>
2022<tr><th>myjobs</th>
2023 <td class="description">0 = all users, 1 = mine</td></tr>
2024<tr><th>whichjobs</th>
2025 <td class="description"><code>CUPS_WHICHJOBS_ALL</code>, <code>CUPS_WHICHJOBS_ACTIVE</code>, or <code>CUPS_WHICHJOBS_COMPLETED</code></td></tr>
2026</tbody></table>
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MS
2027<h4 class="returnvalue">Return Value</h4>
2028 <p class="description">Number of jobs</p>
2029<h4 class="discussion">Discussion</h4>
2030 <p class="discussion">A &quot;whichjobs&quot; value of <code>CUPS_WHICHJOBS_ALL</code> returns all jobs regardless
2031of state, while <code>CUPS_WHICHJOBS_ACTIVE</code> returns jobs that are
2032pending, processing, or held and <code>CUPS_WHICHJOBS_COMPLETED</code> returns
2033jobs that are stopped, canceled, aborted, or completed.
2034
2035</p>
2036<h3 class="function"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span><a id="cupsGetNamedDest">cupsGetNamedDest</a></h3>
2037 <p class="description">Get options for the named destination.</p>
2038<p class="code">
98d88c8d
MS
2039<a href="#cups_dest_t">cups_dest_t</a> *cupsGetNamedDest(<a href="#http_t">http_t</a> *http, const char *name, const char *instance);</p>
2040<h4 class="parameters">Parameters</h4>
2041<table class="list"><tbody>
2042<tr><th>http</th>
2043 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
2044<tr><th>name</th>
2045 <td class="description">Destination name or <code>NULL</code> for the default destination</td></tr>
2046<tr><th>instance</th>
2047 <td class="description">Instance name or <code>NULL</code></td></tr>
2048</tbody></table>
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MS
2049<h4 class="returnvalue">Return Value</h4>
2050 <p class="description">Destination or <code>NULL</code></p>
2051<h4 class="discussion">Discussion</h4>
2052 <p class="discussion">This function is optimized for retrieving a single destination and should
98d88c8d
MS
2053be used instead of <a href="#cupsGetDests2"><code>cupsGetDests2</code></a> and <a href="#cupsGetDest"><code>cupsGetDest</code></a> when you
2054either know the name of the destination or want to print to the default
2055destination. If <code>NULL</code> is returned, the destination does not exist or
2056there is no default destination.<br>
798d6e29
MS
2057<br>
2058If &quot;http&quot; is <code>CUPS_HTTP_DEFAULT</code>, the connection to the default print
2059server will be used.<br>
2060<br>
2061If &quot;name&quot; is <code>NULL</code>, the default printer for the current user will be
2062returned.<br>
2063<br>
2064The returned destination must be freed using <a href="#cupsFreeDests"><code>cupsFreeDests</code></a> with a
2065&quot;num_dests&quot; value of 1.
2066
2067</p>
2068<h3 class="function"><a id="cupsGetOption">cupsGetOption</a></h3>
2069 <p class="description">Get an option value.</p>
2070<p class="code">
98d88c8d
MS
2071const char *cupsGetOption(const char *name, int num_options, <a href="#cups_option_t">cups_option_t</a> *options);</p>
2072<h4 class="parameters">Parameters</h4>
2073<table class="list"><tbody>
2074<tr><th>name</th>
2075 <td class="description">Name of option</td></tr>
2076<tr><th>num_options</th>
2077 <td class="description">Number of options</td></tr>
2078<tr><th>options</th>
2079 <td class="description">Options</td></tr>
2080</tbody></table>
798d6e29
MS
2081<h4 class="returnvalue">Return Value</h4>
2082 <p class="description">Option value or <code>NULL</code></p>
798d6e29 2083<h3 class="function"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span><a id="cupsGetPassword2">cupsGetPassword2</a></h3>
98d88c8d 2084 <p class="description">Get a password from the user using the current
798d6e29
MS
2085password callback.</p>
2086<p class="code">
98d88c8d
MS
2087const char *cupsGetPassword2(const char *prompt, <a href="#http_t">http_t</a> *http, const char *method, const char *resource);</p>
2088<h4 class="parameters">Parameters</h4>
2089<table class="list"><tbody>
2090<tr><th>prompt</th>
2091 <td class="description">Prompt string</td></tr>
2092<tr><th>http</th>
2093 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
2094<tr><th>method</th>
2095 <td class="description">Request method (&quot;GET&quot;, &quot;POST&quot;, &quot;PUT&quot;)</td></tr>
2096<tr><th>resource</th>
2097 <td class="description">Resource path</td></tr>
2098</tbody></table>
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MS
2099<h4 class="returnvalue">Return Value</h4>
2100 <p class="description">Password</p>
2101<h4 class="discussion">Discussion</h4>
2102 <p class="discussion">Uses the current password callback function. Returns <code>NULL</code> if the
2103user does not provide a password.<br>
2104<br>
2105Note: The current password callback function is tracked separately for each
2106thread in a program. Multi-threaded programs that override the setting via
98d88c8d
MS
2107the <a href="#cupsSetPasswordCB2"><code>cupsSetPasswordCB2</code></a> function need to do so in each thread for the
2108same function to be used.
798d6e29 2109
798d6e29 2110</p>
798d6e29
MS
2111<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="cupsLocalizeDestMedia">cupsLocalizeDestMedia</a></h3>
2112 <p class="description">Get the localized string for a destination media
2113size.</p>
2114<p class="code">
98d88c8d
MS
2115const char *cupsLocalizeDestMedia(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, unsigned flags, <a href="#cups_size_t">cups_size_t</a> *size);</p>
2116<h4 class="parameters">Parameters</h4>
2117<table class="list"><tbody>
2118<tr><th>http</th>
2119 <td class="description">Connection to destination</td></tr>
2120<tr><th>dest</th>
2121 <td class="description">Destination</td></tr>
2122<tr><th>dinfo</th>
2123 <td class="description">Destination information</td></tr>
2124<tr><th>flags</th>
2125 <td class="description">Media flags</td></tr>
2126<tr><th>size</th>
2127 <td class="description">Media size</td></tr>
2128</tbody></table>
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MS
2129<h4 class="returnvalue">Return Value</h4>
2130 <p class="description">Localized string</p>
2131<h4 class="discussion">Discussion</h4>
2132 <p class="discussion">The returned string is stored in the destination information and will become
2133invalid if the destination information is deleted.
2134
2135</p>
2136<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsLocalizeDestOption">cupsLocalizeDestOption</a></h3>
2137 <p class="description">Get the localized string for a destination
2138option.</p>
2139<p class="code">
98d88c8d
MS
2140const char *cupsLocalizeDestOption(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, const char *option);</p>
2141<h4 class="parameters">Parameters</h4>
2142<table class="list"><tbody>
2143<tr><th>http</th>
2144 <td class="description">Connection to destination</td></tr>
2145<tr><th>dest</th>
2146 <td class="description">Destination</td></tr>
2147<tr><th>dinfo</th>
2148 <td class="description">Destination information</td></tr>
2149<tr><th>option</th>
2150 <td class="description">Option to localize</td></tr>
2151</tbody></table>
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MS
2152<h4 class="returnvalue">Return Value</h4>
2153 <p class="description">Localized string</p>
2154<h4 class="discussion">Discussion</h4>
2155 <p class="discussion">The returned string is stored in the destination information and will become
2156invalid if the destination information is deleted.
2157
2158</p>
2159<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsLocalizeDestValue">cupsLocalizeDestValue</a></h3>
2160 <p class="description">Get the localized string for a destination
2161option+value pair.</p>
2162<p class="code">
98d88c8d
MS
2163const char *cupsLocalizeDestValue(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo, const char *option, const char *value);</p>
2164<h4 class="parameters">Parameters</h4>
2165<table class="list"><tbody>
2166<tr><th>http</th>
2167 <td class="description">Connection to destination</td></tr>
2168<tr><th>dest</th>
2169 <td class="description">Destination</td></tr>
2170<tr><th>dinfo</th>
2171 <td class="description">Destination information</td></tr>
2172<tr><th>option</th>
2173 <td class="description">Option to localize</td></tr>
2174<tr><th>value</th>
2175 <td class="description">Value to localize</td></tr>
2176</tbody></table>
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MS
2177<h4 class="returnvalue">Return Value</h4>
2178 <p class="description">Localized string</p>
2179<h4 class="discussion">Discussion</h4>
2180 <p class="discussion">The returned string is stored in the destination information and will become
2181invalid if the destination information is deleted.
2182
2183</p>
2184<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="cupsMakeServerCredentials">cupsMakeServerCredentials</a></h3>
2185 <p class="description">Make a self-signed certificate and private key pair.</p>
2186<p class="code">
98d88c8d
MS
2187int cupsMakeServerCredentials(const char *path, const char *common_name, int num_alt_names, const char **alt_names, time_t expiration_date);</p>
2188<h4 class="parameters">Parameters</h4>
2189<table class="list"><tbody>
2190<tr><th>path</th>
2191 <td class="description">Keychain path or <code>NULL</code> for default</td></tr>
2192<tr><th>common_name</th>
2193 <td class="description">Common name</td></tr>
2194<tr><th>num_alt_names</th>
2195 <td class="description">Number of subject alternate names</td></tr>
2196<tr><th>alt_names</th>
2197 <td class="description">Subject Alternate Names</td></tr>
2198<tr><th>expiration_date</th>
2199 <td class="description">Expiration date</td></tr>
2200</tbody></table>
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MS
2201<h4 class="returnvalue">Return Value</h4>
2202 <p class="description">1 on success, 0 on failure</p>
798d6e29
MS
2203<h3 class="function"><a id="cupsParseOptions">cupsParseOptions</a></h3>
2204 <p class="description">Parse options from a command-line argument.</p>
2205<p class="code">
98d88c8d
MS
2206int cupsParseOptions(const char *arg, int num_options, <a href="#cups_option_t">cups_option_t</a> **options);</p>
2207<h4 class="parameters">Parameters</h4>
2208<table class="list"><tbody>
2209<tr><th>arg</th>
2210 <td class="description">Argument to parse</td></tr>
2211<tr><th>num_options</th>
2212 <td class="description">Number of options</td></tr>
2213<tr><th>options</th>
2214 <td class="description">Options found</td></tr>
2215</tbody></table>
798d6e29
MS
2216<h4 class="returnvalue">Return Value</h4>
2217 <p class="description">Number of options found</p>
2218<h4 class="discussion">Discussion</h4>
2219 <p class="discussion">This function converts space-delimited name/value pairs according
2220to the PAPI text option ABNF specification. Collection values
2221(&quot;name={a=... b=... c=...}&quot;) are stored with the curley brackets
2222intact - use <code>cupsParseOptions</code> on the value to extract the
2223collection attributes.</p>
798d6e29
MS
2224<h3 class="function"><span class="info">&#160;CUPS 1.3/macOS 10.5&#160;</span><a id="cupsRemoveDest">cupsRemoveDest</a></h3>
2225 <p class="description">Remove a destination from the destination list.</p>
2226<p class="code">
98d88c8d
MS
2227int cupsRemoveDest(const char *name, const char *instance, int num_dests, <a href="#cups_dest_t">cups_dest_t</a> **dests);</p>
2228<h4 class="parameters">Parameters</h4>
2229<table class="list"><tbody>
2230<tr><th>name</th>
2231 <td class="description">Destination name</td></tr>
2232<tr><th>instance</th>
2233 <td class="description">Instance name or <code>NULL</code></td></tr>
2234<tr><th>num_dests</th>
2235 <td class="description">Number of destinations</td></tr>
2236<tr><th>dests</th>
2237 <td class="description">Destinations</td></tr>
2238</tbody></table>
798d6e29
MS
2239<h4 class="returnvalue">Return Value</h4>
2240 <p class="description">New number of destinations</p>
2241<h4 class="discussion">Discussion</h4>
2242 <p class="discussion">Removing a destination/instance does not delete the class or printer
2243queue, merely the lpoptions for that destination/instance. Use the
2244<a href="#cupsSetDests"><code>cupsSetDests</code></a> or <a href="#cupsSetDests2"><code>cupsSetDests2</code></a> functions to save the new
2245options for the user.
2246
2247</p>
2248<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="cupsRemoveOption">cupsRemoveOption</a></h3>
2249 <p class="description">Remove an option from an option array.</p>
2250<p class="code">
98d88c8d
MS
2251int cupsRemoveOption(const char *name, int num_options, <a href="#cups_option_t">cups_option_t</a> **options);</p>
2252<h4 class="parameters">Parameters</h4>
2253<table class="list"><tbody>
2254<tr><th>name</th>
2255 <td class="description">Option name</td></tr>
2256<tr><th>num_options</th>
2257 <td class="description">Current number of options</td></tr>
2258<tr><th>options</th>
2259 <td class="description">Options</td></tr>
2260</tbody></table>
798d6e29
MS
2261<h4 class="returnvalue">Return Value</h4>
2262 <p class="description">New number of options</p>
2263<h3 class="function"><a id="cupsServer">cupsServer</a></h3>
2264 <p class="description">Return the hostname/address of the current server.</p>
2265<p class="code">
98d88c8d 2266const char *cupsServer(void);</p>
798d6e29
MS
2267<h4 class="returnvalue">Return Value</h4>
2268 <p class="description">Server name</p>
2269<h4 class="discussion">Discussion</h4>
2270 <p class="discussion">The default server comes from the CUPS_SERVER environment variable, then the
2271~/.cups/client.conf file, and finally the /etc/cups/client.conf file. If not
2272set, the default is the local system - either &quot;localhost&quot; or a domain socket
2273path.<br>
2274<br>
2275The returned value can be a fully-qualified hostname, a numeric IPv4 or IPv6
2276address, or a domain socket pathname.<br>
2277<br>
2278Note: The current server is tracked separately for each thread in a program.
2279Multi-threaded programs that override the server via the
2280<a href="#cupsSetServer"><code>cupsSetServer</code></a> function need to do so in each thread for the same
2281server to be used.</p>
98d88c8d
MS
2282<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="cupsSetClientCertCB">cupsSetClientCertCB</a></h3>
2283 <p class="description">Set the client certificate callback.</p>
798d6e29 2284<p class="code">
98d88c8d 2285void cupsSetClientCertCB(<a href="#cups_client_cert_cb_t">cups_client_cert_cb_t</a> cb, void *user_data);</p>
798d6e29 2286<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2287<table class="list"><tbody>
2288<tr><th>cb</th>
2289 <td class="description">Callback function</td></tr>
2290<tr><th>user_data</th>
2291 <td class="description">User data pointer</td></tr>
2292</tbody></table>
2293<h4 class="discussion">Discussion</h4>
798d6e29
MS
2294 <p class="discussion">Pass <code>NULL</code> to restore the default callback.<br>
2295<br>
2296Note: The current certificate callback is tracked separately for each thread
2297in a program. Multi-threaded programs that override the callback need to do
2298so in each thread for the same callback to be used.
2299
2300</p>
2301<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="cupsSetCredentials">cupsSetCredentials</a></h3>
2302 <p class="description">Set the default credentials to be used for SSL/TLS
2303connections.</p>
2304<p class="code">
98d88c8d 2305int cupsSetCredentials(cups_array_t *credentials);</p>
798d6e29 2306<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2307<table class="list"><tbody>
2308<tr><th>credentials</th>
2309 <td class="description">Array of credentials</td></tr>
2310</tbody></table>
798d6e29
MS
2311<h4 class="returnvalue">Return Value</h4>
2312 <p class="description">Status of call (0 = success)</p>
2313<h4 class="discussion">Discussion</h4>
2314 <p class="discussion">Note: The default credentials are tracked separately for each thread in a
2315program. Multi-threaded programs that override the setting need to do so in
2316each thread for the same setting to be used.
2317
2318</p>
98d88c8d 2319<h3 class="function"><span class="info">&#160;CUPS 1.3/macOS 10.5&#160;</span><a id="cupsSetDefaultDest">cupsSetDefaultDest</a></h3>
53af7f21 2320 <p class="description">Set the default destination.</p>
98d88c8d
MS
2321<p class="code">
2322void cupsSetDefaultDest(const char *name, const char *instance, int num_dests, <a href="#cups_dest_t">cups_dest_t</a> *dests);</p>
2323<h4 class="parameters">Parameters</h4>
2324<table class="list"><tbody>
2325<tr><th>name</th>
2326 <td class="description">Destination name</td></tr>
2327<tr><th>instance</th>
2328 <td class="description">Instance name or <code>NULL</code></td></tr>
2329<tr><th>num_dests</th>
2330 <td class="description">Number of destinations</td></tr>
2331<tr><th>dests</th>
2332 <td class="description">Destinations</td></tr>
2333</tbody></table>
798d6e29
MS
2334<h3 class="function"><span class="info">&#160;CUPS 1.1.21/macOS 10.4&#160;</span><a id="cupsSetDests2">cupsSetDests2</a></h3>
2335 <p class="description">Save the list of destinations for the specified server.</p>
2336<p class="code">
98d88c8d
MS
2337int cupsSetDests2(<a href="#http_t">http_t</a> *http, int num_dests, <a href="#cups_dest_t">cups_dest_t</a> *dests);</p>
2338<h4 class="parameters">Parameters</h4>
2339<table class="list"><tbody>
2340<tr><th>http</th>
2341 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
2342<tr><th>num_dests</th>
2343 <td class="description">Number of destinations</td></tr>
2344<tr><th>dests</th>
2345 <td class="description">Destinations</td></tr>
2346</tbody></table>
798d6e29
MS
2347<h4 class="returnvalue">Return Value</h4>
2348 <p class="description">0 on success, -1 on error</p>
2349<h4 class="discussion">Discussion</h4>
2350 <p class="discussion">This function saves the destinations to /etc/cups/lpoptions when run
2351as root and ~/.cups/lpoptions when run as a normal user.
2352
2353</p>
2354<h3 class="function"><a id="cupsSetEncryption">cupsSetEncryption</a></h3>
98d88c8d 2355 <p class="description">Set the encryption preference.</p>
798d6e29 2356<p class="code">
98d88c8d 2357void cupsSetEncryption(<a href="#http_encryption_t">http_encryption_t</a> e);</p>
798d6e29 2358<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2359<table class="list"><tbody>
2360<tr><th>e</th>
2361 <td class="description">New encryption preference</td></tr>
2362</tbody></table>
2363<h4 class="discussion">Discussion</h4>
798d6e29
MS
2364 <p class="discussion">The default encryption setting comes from the CUPS_ENCRYPTION
2365environment variable, then the ~/.cups/client.conf file, and finally the
2366/etc/cups/client.conf file. If not set, the default is
2367<code>HTTP_ENCRYPTION_IF_REQUESTED</code>.<br>
2368<br>
2369Note: The current encryption setting is tracked separately for each thread
2370in a program. Multi-threaded programs that override the setting need to do
2371so in each thread for the same setting to be used.</p>
98d88c8d
MS
2372<h3 class="function"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span><a id="cupsSetPasswordCB2">cupsSetPasswordCB2</a></h3>
2373 <p class="description">Set the advanced password callback for CUPS.</p>
798d6e29 2374<p class="code">
98d88c8d 2375void cupsSetPasswordCB2(<a href="#cups_password_cb2_t">cups_password_cb2_t</a> cb, void *user_data);</p>
798d6e29 2376<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2377<table class="list"><tbody>
2378<tr><th>cb</th>
2379 <td class="description">Callback function</td></tr>
2380<tr><th>user_data</th>
2381 <td class="description">User data pointer</td></tr>
2382</tbody></table>
2383<h4 class="discussion">Discussion</h4>
798d6e29
MS
2384 <p class="discussion">Pass <code>NULL</code> to restore the default (console) password callback, which
2385reads the password from the console. Programs should call either this
2386function or <a href="#cupsSetPasswordCB2"><code>cupsSetPasswordCB2</code></a>, as only one callback can be registered
2387by a program per thread.<br>
2388<br>
2389Note: The current password callback is tracked separately for each thread
2390in a program. Multi-threaded programs that override the callback need to do
2391so in each thread for the same callback to be used.
2392
2393</p>
2394<h3 class="function"><a id="cupsSetServer">cupsSetServer</a></h3>
98d88c8d 2395 <p class="description">Set the default server name and port.</p>
798d6e29 2396<p class="code">
98d88c8d 2397void cupsSetServer(const char *server);</p>
798d6e29 2398<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2399<table class="list"><tbody>
2400<tr><th>server</th>
2401 <td class="description">Server name</td></tr>
2402</tbody></table>
2403<h4 class="discussion">Discussion</h4>
798d6e29
MS
2404 <p class="discussion">The &quot;server&quot; string can be a fully-qualified hostname, a numeric
2405IPv4 or IPv6 address, or a domain socket pathname. Hostnames and numeric IP
2406addresses can be optionally followed by a colon and port number to override
2407the default port 631, e.g. &quot;hostname:8631&quot;. Pass <code>NULL</code> to restore the
2408default server name and port.<br>
2409<br>
2410Note: The current server is tracked separately for each thread in a program.
2411Multi-threaded programs that override the server need to do so in each
2412thread for the same server to be used.</p>
98d88c8d
MS
2413<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="cupsSetServerCertCB">cupsSetServerCertCB</a></h3>
2414 <p class="description">Set the server certificate callback.</p>
798d6e29 2415<p class="code">
98d88c8d 2416void cupsSetServerCertCB(<a href="#cups_server_cert_cb_t">cups_server_cert_cb_t</a> cb, void *user_data);</p>
798d6e29 2417<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2418<table class="list"><tbody>
2419<tr><th>cb</th>
2420 <td class="description">Callback function</td></tr>
2421<tr><th>user_data</th>
2422 <td class="description">User data pointer</td></tr>
2423</tbody></table>
2424<h4 class="discussion">Discussion</h4>
798d6e29
MS
2425 <p class="discussion">Pass <code>NULL</code> to restore the default callback.<br>
2426<br>
2427Note: The current credentials callback is tracked separately for each thread
2428in a program. Multi-threaded programs that override the callback need to do
2429so in each thread for the same callback to be used.
2430
2431</p>
2432<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="cupsSetServerCredentials">cupsSetServerCredentials</a></h3>
2433 <p class="description">Set the default server credentials.</p>
2434<p class="code">
98d88c8d
MS
2435int cupsSetServerCredentials(const char *path, const char *common_name, int auto_create);</p>
2436<h4 class="parameters">Parameters</h4>
2437<table class="list"><tbody>
2438<tr><th>path</th>
2439 <td class="description">Keychain path or <code>NULL</code> for default</td></tr>
2440<tr><th>common_name</th>
2441 <td class="description">Default common name for server</td></tr>
2442<tr><th>auto_create</th>
2443 <td class="description">1 = automatically create self-signed certificates</td></tr>
2444</tbody></table>
798d6e29
MS
2445<h4 class="returnvalue">Return Value</h4>
2446 <p class="description">1 on success, 0 on failure</p>
2447<h4 class="discussion">Discussion</h4>
2448 <p class="discussion">Note: The server credentials are used by all threads in the running process.
2449This function is threadsafe.
2450
2451</p>
2452<h3 class="function"><a id="cupsSetUser">cupsSetUser</a></h3>
98d88c8d 2453 <p class="description">Set the default user name.</p>
798d6e29 2454<p class="code">
98d88c8d 2455void cupsSetUser(const char *user);</p>
798d6e29 2456<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2457<table class="list"><tbody>
2458<tr><th>user</th>
2459 <td class="description">User name</td></tr>
2460</tbody></table>
2461<h4 class="discussion">Discussion</h4>
798d6e29
MS
2462 <p class="discussion">Pass <code>NULL</code> to restore the default user name.<br>
2463<br>
2464Note: The current user name is tracked separately for each thread in a
2465program. Multi-threaded programs that override the user name need to do so
2466in each thread for the same user name to be used.</p>
98d88c8d
MS
2467<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsSetUserAgent">cupsSetUserAgent</a></h3>
2468 <p class="description">Set the default HTTP User-Agent string.</p>
798d6e29 2469<p class="code">
98d88c8d 2470void cupsSetUserAgent(const char *user_agent);</p>
798d6e29 2471<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2472<table class="list"><tbody>
2473<tr><th>user_agent</th>
2474 <td class="description">User-Agent string or <code>NULL</code></td></tr>
2475</tbody></table>
2476<h4 class="discussion">Discussion</h4>
798d6e29
MS
2477 <p class="discussion">Setting the string to NULL forces the default value containing the CUPS
2478version, IPP version, and operating system version and architecture.
2479
2480</p>
2481<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsStartDestDocument">cupsStartDestDocument</a></h3>
2482 <p class="description">Start a new document.</p>
2483<p class="code">
98d88c8d
MS
2484http_status_t cupsStartDestDocument(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> *dest, <a href="#cups_dinfo_t">cups_dinfo_t</a> *info, int job_id, const char *docname, const char *format, int num_options, <a href="#cups_option_t">cups_option_t</a> *options, int last_document);</p>
2485<h4 class="parameters">Parameters</h4>
2486<table class="list"><tbody>
2487<tr><th>http</th>
2488 <td class="description">Connection to destination</td></tr>
2489<tr><th>dest</th>
2490 <td class="description">Destination</td></tr>
2491<tr><th>info</th>
2492 <td class="description">Destination information</td></tr>
2493<tr><th>job_id</th>
2494 <td class="description">Job ID</td></tr>
2495<tr><th>docname</th>
2496 <td class="description">Document name</td></tr>
2497<tr><th>format</th>
2498 <td class="description">Document format</td></tr>
2499<tr><th>num_options</th>
2500 <td class="description">Number of document options</td></tr>
2501<tr><th>options</th>
2502 <td class="description">Document options</td></tr>
2503<tr><th>last_document</th>
2504 <td class="description">1 if this is the last document</td></tr>
2505</tbody></table>
798d6e29
MS
2506<h4 class="returnvalue">Return Value</h4>
2507 <p class="description">Status of document creation</p>
2508<h4 class="discussion">Discussion</h4>
2509 <p class="discussion">&quot;job_id&quot; is the job ID returned by cupsCreateDestJob. &quot;docname&quot; is the name
2510of the document/file being printed, &quot;format&quot; is the MIME media type for the
2511document (see CUPS_FORMAT_xxx constants), and &quot;num_options&quot; and &quot;options&quot;
2512are the options do be applied to the document. &quot;last_document&quot; should be 1
2513if this is the last document to be submitted in the job. Returns
2514<code>HTTP_CONTINUE</code> on success.
2515
798d6e29
MS
2516</p>
2517<h3 class="function"><a id="cupsUser">cupsUser</a></h3>
2518 <p class="description">Return the current user's name.</p>
2519<p class="code">
98d88c8d 2520const char *cupsUser(void);</p>
798d6e29
MS
2521<h4 class="returnvalue">Return Value</h4>
2522 <p class="description">User name</p>
2523<h4 class="discussion">Discussion</h4>
2524 <p class="discussion">Note: The current user name is tracked separately for each thread in a
2525program. Multi-threaded programs that override the user name with the
2526<a href="#cupsSetUser"><code>cupsSetUser</code></a> function need to do so in each thread for the same user
2527name to be used.</p>
2528<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsUserAgent">cupsUserAgent</a></h3>
2529 <p class="description">Return the default HTTP User-Agent string.</p>
2530<p class="code">
98d88c8d 2531const char *cupsUserAgent(void);</p>
798d6e29
MS
2532<h4 class="returnvalue">Return Value</h4>
2533 <p class="description">User-Agent string</p>
2534<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAcceptConnection">httpAcceptConnection</a></h3>
2535 <p class="description">Accept a new HTTP client connection from the
2536specified listening socket.</p>
2537<p class="code">
98d88c8d 2538<a href="#http_t">http_t</a> *httpAcceptConnection(int fd, int blocking);</p>
798d6e29 2539<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2540<table class="list"><tbody>
2541<tr><th>fd</th>
2542 <td class="description">Listen socket file descriptor</td></tr>
2543<tr><th>blocking</th>
2544 <td class="description">1 if the connection should be
2545blocking, 0 otherwise</td></tr>
2546</tbody></table>
798d6e29
MS
2547<h4 class="returnvalue">Return Value</h4>
2548 <p class="description">HTTP connection or <code>NULL</code></p>
2549<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="httpAddCredential">httpAddCredential</a></h3>
2550 <p class="description">Allocates and adds a single credential to an array.</p>
2551<p class="code">
98d88c8d
MS
2552int httpAddCredential(cups_array_t *credentials, const void *data, size_t datalen);</p>
2553<h4 class="parameters">Parameters</h4>
2554<table class="list"><tbody>
2555<tr><th>credentials</th>
2556 <td class="description">Credentials array</td></tr>
2557<tr><th>data</th>
2558 <td class="description">PEM-encoded X.509 data</td></tr>
2559<tr><th>datalen</th>
2560 <td class="description">Length of data</td></tr>
2561</tbody></table>
798d6e29
MS
2562<h4 class="returnvalue">Return Value</h4>
2563 <p class="description">0 on success, -1 on error</p>
2564<h4 class="discussion">Discussion</h4>
2565 <p class="discussion">Use <code>cupsArrayNew(NULL, NULL)</code> to create a credentials array.
2566
2567</p>
2568<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrAny">httpAddrAny</a></h3>
2569 <p class="description">Check for the &quot;any&quot; address.</p>
2570<p class="code">
98d88c8d 2571int httpAddrAny(const <a href="#http_addr_t">http_addr_t</a> *addr);</p>
798d6e29 2572<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2573<table class="list"><tbody>
2574<tr><th>addr</th>
2575 <td class="description">Address to check</td></tr>
2576</tbody></table>
798d6e29
MS
2577<h4 class="returnvalue">Return Value</h4>
2578 <p class="description">1 if &quot;any&quot;, 0 otherwise</p>
2579<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpAddrClose">httpAddrClose</a></h3>
2580 <p class="description">Close a socket created by <a href="#httpAddrConnect"><code>httpAddrConnect</code></a> or
2581<a href="#httpAddrListen"><code>httpAddrListen</code></a>.</p>
2582<p class="code">
98d88c8d 2583int httpAddrClose(<a href="#http_addr_t">http_addr_t</a> *addr, int fd);</p>
798d6e29 2584<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2585<table class="list"><tbody>
2586<tr><th>addr</th>
2587 <td class="description">Listen address or <code>NULL</code></td></tr>
2588<tr><th>fd</th>
2589 <td class="description">Socket file descriptor</td></tr>
2590</tbody></table>
798d6e29
MS
2591<h4 class="returnvalue">Return Value</h4>
2592 <p class="description">0 on success, -1 on failure</p>
2593<h4 class="discussion">Discussion</h4>
98d88c8d
MS
2594 <p class="discussion">Pass <code>NULL</code> for sockets created with <a href="#httpAddrConnect2"><code>httpAddrConnect2</code></a> and the
2595listen address for sockets created with <a href="#httpAddrListen"><code>httpAddrListen</code></a>. This function
2596ensures that domain sockets are removed when closed.
798d6e29
MS
2597
2598</p>
798d6e29
MS
2599<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAddrConnect2">httpAddrConnect2</a></h3>
2600 <p class="description">Connect to any of the addresses in the list with a
2601timeout and optional cancel.</p>
2602<p class="code">
98d88c8d
MS
2603<a href="#http_addrlist_t">http_addrlist_t</a> *httpAddrConnect2(<a href="#http_addrlist_t">http_addrlist_t</a> *addrlist, int *sock, int msec, int *cancel);</p>
2604<h4 class="parameters">Parameters</h4>
2605<table class="list"><tbody>
2606<tr><th>addrlist</th>
2607 <td class="description">List of potential addresses</td></tr>
2608<tr><th>sock</th>
2609 <td class="description">Socket</td></tr>
2610<tr><th>msec</th>
2611 <td class="description">Timeout in milliseconds</td></tr>
2612<tr><th>cancel</th>
2613 <td class="description">Pointer to &quot;cancel&quot; variable</td></tr>
2614</tbody></table>
798d6e29
MS
2615<h4 class="returnvalue">Return Value</h4>
2616 <p class="description">Connected address or NULL on failure</p>
2617<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAddrCopyList">httpAddrCopyList</a></h3>
2618 <p class="description">Copy an address list.</p>
2619<p class="code">
98d88c8d 2620<a href="#http_addrlist_t">http_addrlist_t</a> *httpAddrCopyList(<a href="#http_addrlist_t">http_addrlist_t</a> *src);</p>
798d6e29 2621<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2622<table class="list"><tbody>
2623<tr><th>src</th>
2624 <td class="description">Source address list</td></tr>
2625</tbody></table>
798d6e29
MS
2626<h4 class="returnvalue">Return Value</h4>
2627 <p class="description">New address list or <code>NULL</code> on error</p>
2628<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrEqual">httpAddrEqual</a></h3>
2629 <p class="description">Compare two addresses.</p>
2630<p class="code">
98d88c8d 2631int httpAddrEqual(const <a href="#http_addr_t">http_addr_t</a> *addr1, const <a href="#http_addr_t">http_addr_t</a> *addr2);</p>
798d6e29 2632<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2633<table class="list"><tbody>
2634<tr><th>addr1</th>
2635 <td class="description">First address</td></tr>
2636<tr><th>addr2</th>
2637 <td class="description">Second address</td></tr>
2638</tbody></table>
798d6e29
MS
2639<h4 class="returnvalue">Return Value</h4>
2640 <p class="description">1 if equal, 0 if not</p>
2641<h3 class="function"><a id="httpAddrFamily">httpAddrFamily</a></h3>
2642 <p class="description">Get the address family of an address.</p>
2643<p class="code">
98d88c8d 2644int httpAddrFamily(<a href="#http_addr_t">http_addr_t</a> *addr);</p>
798d6e29 2645<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2646<table class="list"><tbody>
2647<tr><th>addr</th>
2648 <td class="description">Address</td></tr>
2649</tbody></table>
798d6e29
MS
2650<h4 class="returnvalue">Return Value</h4>
2651 <p class="description">Address family</p>
98d88c8d
MS
2652<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrFreeList">httpAddrFreeList</a></h3>
2653 <p class="description">Free an address list.</p>
798d6e29 2654<p class="code">
98d88c8d 2655void httpAddrFreeList(<a href="#http_addrlist_t">http_addrlist_t</a> *addrlist);</p>
798d6e29 2656<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2657<table class="list"><tbody>
2658<tr><th>addrlist</th>
2659 <td class="description">Address list to free</td></tr>
2660</tbody></table>
798d6e29
MS
2661<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrGetList">httpAddrGetList</a></h3>
2662 <p class="description">Get a list of addresses for a hostname.</p>
2663<p class="code">
98d88c8d
MS
2664<a href="#http_addrlist_t">http_addrlist_t</a> *httpAddrGetList(const char *hostname, int family, const char *service);</p>
2665<h4 class="parameters">Parameters</h4>
2666<table class="list"><tbody>
2667<tr><th>hostname</th>
2668 <td class="description">Hostname, IP address, or NULL for passive listen address</td></tr>
2669<tr><th>family</th>
2670 <td class="description">Address family or AF_UNSPEC</td></tr>
2671<tr><th>service</th>
2672 <td class="description">Service name or port number</td></tr>
2673</tbody></table>
798d6e29
MS
2674<h4 class="returnvalue">Return Value</h4>
2675 <p class="description">List of addresses or NULL</p>
2676<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrLength">httpAddrLength</a></h3>
2677 <p class="description">Return the length of the address in bytes.</p>
2678<p class="code">
98d88c8d 2679int httpAddrLength(const <a href="#http_addr_t">http_addr_t</a> *addr);</p>
798d6e29 2680<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2681<table class="list"><tbody>
2682<tr><th>addr</th>
2683 <td class="description">Address</td></tr>
2684</tbody></table>
798d6e29
MS
2685<h4 class="returnvalue">Return Value</h4>
2686 <p class="description">Length in bytes</p>
2687<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAddrListen">httpAddrListen</a></h3>
2688 <p class="description">Create a listening socket bound to the specified
2689address and port.</p>
2690<p class="code">
98d88c8d 2691int httpAddrListen(<a href="#http_addr_t">http_addr_t</a> *addr, int port);</p>
798d6e29 2692<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2693<table class="list"><tbody>
2694<tr><th>addr</th>
2695 <td class="description">Address to bind to</td></tr>
2696<tr><th>port</th>
2697 <td class="description">Port number to bind to</td></tr>
2698</tbody></table>
798d6e29
MS
2699<h4 class="returnvalue">Return Value</h4>
2700 <p class="description">Socket or -1 on error</p>
2701<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrLocalhost">httpAddrLocalhost</a></h3>
2702 <p class="description">Check for the local loopback address.</p>
2703<p class="code">
98d88c8d 2704int httpAddrLocalhost(const <a href="#http_addr_t">http_addr_t</a> *addr);</p>
798d6e29 2705<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2706<table class="list"><tbody>
2707<tr><th>addr</th>
2708 <td class="description">Address to check</td></tr>
2709</tbody></table>
798d6e29
MS
2710<h4 class="returnvalue">Return Value</h4>
2711 <p class="description">1 if local host, 0 otherwise</p>
2712<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrLookup">httpAddrLookup</a></h3>
2713 <p class="description">Lookup the hostname associated with the address.</p>
2714<p class="code">
98d88c8d
MS
2715char *httpAddrLookup(const <a href="#http_addr_t">http_addr_t</a> *addr, char *name, int namelen);</p>
2716<h4 class="parameters">Parameters</h4>
2717<table class="list"><tbody>
2718<tr><th>addr</th>
2719 <td class="description">Address to lookup</td></tr>
2720<tr><th>name</th>
2721 <td class="description">Host name buffer</td></tr>
2722<tr><th>namelen</th>
2723 <td class="description">Size of name buffer</td></tr>
2724</tbody></table>
798d6e29
MS
2725<h4 class="returnvalue">Return Value</h4>
2726 <p class="description">Host name</p>
2727<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAddrPort">httpAddrPort</a></h3>
2728 <p class="description">Get the port number associated with an address.</p>
2729<p class="code">
98d88c8d 2730int httpAddrPort(<a href="#http_addr_t">http_addr_t</a> *addr);</p>
798d6e29 2731<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2732<table class="list"><tbody>
2733<tr><th>addr</th>
2734 <td class="description">Address</td></tr>
2735</tbody></table>
798d6e29
MS
2736<h4 class="returnvalue">Return Value</h4>
2737 <p class="description">Port number</p>
2738<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrString">httpAddrString</a></h3>
2739 <p class="description">Convert an address to a numeric string.</p>
2740<p class="code">
98d88c8d
MS
2741char *httpAddrString(const <a href="#http_addr_t">http_addr_t</a> *addr, char *s, int slen);</p>
2742<h4 class="parameters">Parameters</h4>
2743<table class="list"><tbody>
2744<tr><th>addr</th>
2745 <td class="description">Address to convert</td></tr>
2746<tr><th>s</th>
2747 <td class="description">String buffer</td></tr>
2748<tr><th>slen</th>
2749 <td class="description">Length of string</td></tr>
2750</tbody></table>
798d6e29
MS
2751<h4 class="returnvalue">Return Value</h4>
2752 <p class="description">Numeric address string</p>
2753<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAssembleURI">httpAssembleURI</a></h3>
2754 <p class="description">Assemble a uniform resource identifier from its
2755components.</p>
2756<p class="code">
98d88c8d
MS
2757<a href="#http_uri_status_t">http_uri_status_t</a> httpAssembleURI(<a href="#http_uri_coding_t">http_uri_coding_t</a> encoding, char *uri, int urilen, const char *scheme, const char *username, const char *host, int port, const char *resource);</p>
2758<h4 class="parameters">Parameters</h4>
2759<table class="list"><tbody>
2760<tr><th>encoding</th>
2761 <td class="description">Encoding flags</td></tr>
2762<tr><th>uri</th>
2763 <td class="description">URI buffer</td></tr>
2764<tr><th>urilen</th>
2765 <td class="description">Size of URI buffer</td></tr>
2766<tr><th>scheme</th>
2767 <td class="description">Scheme name</td></tr>
2768<tr><th>username</th>
2769 <td class="description">Username</td></tr>
2770<tr><th>host</th>
2771 <td class="description">Hostname or address</td></tr>
2772<tr><th>port</th>
2773 <td class="description">Port number</td></tr>
2774<tr><th>resource</th>
2775 <td class="description">Resource</td></tr>
2776</tbody></table>
798d6e29
MS
2777<h4 class="returnvalue">Return Value</h4>
2778 <p class="description">URI status</p>
2779<h4 class="discussion">Discussion</h4>
2780 <p class="discussion">This function escapes reserved characters in the URI depending on the
2781value of the &quot;encoding&quot; argument. You should use this function in
2782place of traditional string functions whenever you need to create a
2783URI string.
2784
2785</p>
2786<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAssembleURIf">httpAssembleURIf</a></h3>
2787 <p class="description">Assemble a uniform resource identifier from its
2788components with a formatted resource.</p>
2789<p class="code">
98d88c8d
MS
2790<a href="#http_uri_status_t">http_uri_status_t</a> httpAssembleURIf(<a href="#http_uri_coding_t">http_uri_coding_t</a> encoding, char *uri, int urilen, const char *scheme, const char *username, const char *host, int port, const char *resourcef, ...);</p>
2791<h4 class="parameters">Parameters</h4>
2792<table class="list"><tbody>
2793<tr><th>encoding</th>
2794 <td class="description">Encoding flags</td></tr>
2795<tr><th>uri</th>
2796 <td class="description">URI buffer</td></tr>
2797<tr><th>urilen</th>
2798 <td class="description">Size of URI buffer</td></tr>
2799<tr><th>scheme</th>
2800 <td class="description">Scheme name</td></tr>
2801<tr><th>username</th>
2802 <td class="description">Username</td></tr>
2803<tr><th>host</th>
2804 <td class="description">Hostname or address</td></tr>
2805<tr><th>port</th>
2806 <td class="description">Port number</td></tr>
2807<tr><th>resourcef</th>
2808 <td class="description">Printf-style resource</td></tr>
2809<tr><th>...</th>
2810 <td class="description">Additional arguments as needed</td></tr>
2811</tbody></table>
798d6e29
MS
2812<h4 class="returnvalue">Return Value</h4>
2813 <p class="description">URI status</p>
2814<h4 class="discussion">Discussion</h4>
2815 <p class="discussion">This function creates a formatted version of the resource string
2816argument &quot;resourcef&quot; and escapes reserved characters in the URI
2817depending on the value of the &quot;encoding&quot; argument. You should use
2818this function in place of traditional string functions whenever
2819you need to create a URI string.
2820
2821</p>
2822<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAssembleUUID">httpAssembleUUID</a></h3>
2823 <p class="description">Assemble a name-based UUID URN conforming to RFC 4122.</p>
2824<p class="code">
98d88c8d
MS
2825char *httpAssembleUUID(const char *server, int port, const char *name, int number, char *buffer, size_t bufsize);</p>
2826<h4 class="parameters">Parameters</h4>
2827<table class="list"><tbody>
2828<tr><th>server</th>
2829 <td class="description">Server name</td></tr>
2830<tr><th>port</th>
2831 <td class="description">Port number</td></tr>
2832<tr><th>name</th>
2833 <td class="description">Object name or NULL</td></tr>
2834<tr><th>number</th>
2835 <td class="description">Object number or 0</td></tr>
2836<tr><th>buffer</th>
2837 <td class="description">String buffer</td></tr>
2838<tr><th>bufsize</th>
2839 <td class="description">Size of buffer</td></tr>
2840</tbody></table>
798d6e29
MS
2841<h4 class="returnvalue">Return Value</h4>
2842 <p class="description">UUID string</p>
2843<h4 class="discussion">Discussion</h4>
2844 <p class="discussion">This function creates a unique 128-bit identifying number using the server
2845name, port number, random data, and optionally an object name and/or object
2846number. The result is formatted as a UUID URN as defined in RFC 4122.<br>
2847<br>
2848The buffer needs to be at least 46 bytes in size.
2849
2850</p>
2851<h3 class="function"><a id="httpBlocking">httpBlocking</a></h3>
98d88c8d 2852 <p class="description">Set blocking/non-blocking behavior on a connection.</p>
798d6e29 2853<p class="code">
98d88c8d 2854void httpBlocking(<a href="#http_t">http_t</a> *http, int b);</p>
798d6e29 2855<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2856<table class="list"><tbody>
2857<tr><th>http</th>
2858 <td class="description">HTTP connection</td></tr>
2859<tr><th>b</th>
2860 <td class="description">1 = blocking, 0 = non-blocking</td></tr>
2861</tbody></table>
798d6e29
MS
2862<h3 class="function"><a id="httpCheck">httpCheck</a></h3>
2863 <p class="description">Check to see if there is a pending response from the server.</p>
2864<p class="code">
98d88c8d 2865int httpCheck(<a href="#http_t">http_t</a> *http);</p>
798d6e29 2866<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2867<table class="list"><tbody>
2868<tr><th>http</th>
2869 <td class="description">HTTP connection</td></tr>
2870</tbody></table>
798d6e29
MS
2871<h4 class="returnvalue">Return Value</h4>
2872 <p class="description">0 = no data, 1 = data available</p>
98d88c8d
MS
2873<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="httpClearCookie">httpClearCookie</a></h3>
2874 <p class="description">Clear the cookie value(s).</p>
798d6e29 2875<p class="code">
98d88c8d 2876void httpClearCookie(<a href="#http_t">http_t</a> *http);</p>
798d6e29 2877<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2878<table class="list"><tbody>
2879<tr><th>http</th>
2880 <td class="description">HTTP connection</td></tr>
2881</tbody></table>
798d6e29 2882<h3 class="function"><a id="httpClearFields">httpClearFields</a></h3>
98d88c8d 2883 <p class="description">Clear HTTP request fields.</p>
798d6e29 2884<p class="code">
98d88c8d 2885void httpClearFields(<a href="#http_t">http_t</a> *http);</p>
798d6e29 2886<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2887<table class="list"><tbody>
2888<tr><th>http</th>
2889 <td class="description">HTTP connection</td></tr>
2890</tbody></table>
798d6e29 2891<h3 class="function"><a id="httpClose">httpClose</a></h3>
98d88c8d 2892 <p class="description">Close an HTTP connection.</p>
798d6e29 2893<p class="code">
98d88c8d 2894void httpClose(<a href="#http_t">http_t</a> *http);</p>
798d6e29 2895<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2896<table class="list"><tbody>
2897<tr><th>http</th>
2898 <td class="description">HTTP connection</td></tr>
2899</tbody></table>
798d6e29
MS
2900<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpCompareCredentials">httpCompareCredentials</a></h3>
2901 <p class="description">Compare two sets of X.509 credentials.</p>
2902<p class="code">
98d88c8d 2903int httpCompareCredentials(cups_array_t *cred1, cups_array_t *cred2);</p>
798d6e29 2904<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2905<table class="list"><tbody>
2906<tr><th>cred1</th>
2907 <td class="description">First set of X.509 credentials</td></tr>
2908<tr><th>cred2</th>
2909 <td class="description">Second set of X.509 credentials</td></tr>
2910</tbody></table>
53af7f21
MS
2911<h4 class="returnvalue">Return Value</h4>
2912 <p class="description">1 if they match, 0 if they do not</p>
798d6e29
MS
2913<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpConnect2">httpConnect2</a></h3>
2914 <p class="description">Connect to a HTTP server.</p>
2915<p class="code">
98d88c8d
MS
2916<a href="#http_t">http_t</a> *httpConnect2(const char *host, int port, <a href="#http_addrlist_t">http_addrlist_t</a> *addrlist, int family, <a href="#http_encryption_t">http_encryption_t</a> encryption, int blocking, int msec, int *cancel);</p>
2917<h4 class="parameters">Parameters</h4>
2918<table class="list"><tbody>
2919<tr><th>host</th>
2920 <td class="description">Host to connect to</td></tr>
2921<tr><th>port</th>
2922 <td class="description">Port number</td></tr>
2923<tr><th>addrlist</th>
65bebeac 2924 <td class="description">List of addresses or <code>NULL</code> to lookup</td></tr>
98d88c8d
MS
2925<tr><th>family</th>
2926 <td class="description">Address family to use or <code>AF_UNSPEC</code> for any</td></tr>
2927<tr><th>encryption</th>
2928 <td class="description">Type of encryption to use</td></tr>
2929<tr><th>blocking</th>
2930 <td class="description">1 for blocking connection, 0 for non-blocking</td></tr>
2931<tr><th>msec</th>
2932 <td class="description">Connection timeout in milliseconds, 0 means don't connect</td></tr>
2933<tr><th>cancel</th>
2934 <td class="description">Pointer to &quot;cancel&quot; variable</td></tr>
2935</tbody></table>
798d6e29
MS
2936<h4 class="returnvalue">Return Value</h4>
2937 <p class="description">New HTTP connection</p>
798d6e29
MS
2938<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="httpCopyCredentials">httpCopyCredentials</a></h3>
2939 <p class="description">Copy the credentials associated with the peer in
2940an encrypted connection.</p>
2941<p class="code">
98d88c8d 2942int httpCopyCredentials(<a href="#http_t">http_t</a> *http, cups_array_t **credentials);</p>
798d6e29 2943<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2944<table class="list"><tbody>
2945<tr><th>http</th>
2946 <td class="description">Connection to server</td></tr>
2947<tr><th>credentials</th>
2948 <td class="description">Array of credentials</td></tr>
2949</tbody></table>
798d6e29
MS
2950<h4 class="returnvalue">Return Value</h4>
2951 <p class="description">Status of call (0 = success)</p>
2952<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="httpCredentialsAreValidForName">httpCredentialsAreValidForName</a></h3>
2953 <p class="description">Return whether the credentials are valid for the given name.</p>
2954<p class="code">
98d88c8d 2955int httpCredentialsAreValidForName(cups_array_t *credentials, const char *common_name);</p>
798d6e29 2956<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2957<table class="list"><tbody>
2958<tr><th>credentials</th>
2959 <td class="description">Credentials</td></tr>
2960<tr><th>common_name</th>
2961 <td class="description">Name to check</td></tr>
2962</tbody></table>
798d6e29
MS
2963<h4 class="returnvalue">Return Value</h4>
2964 <p class="description">1 if valid, 0 otherwise</p>
2965<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="httpCredentialsGetExpiration">httpCredentialsGetExpiration</a></h3>
2966 <p class="description">Return the expiration date of the credentials.</p>
2967<p class="code">
98d88c8d 2968time_t httpCredentialsGetExpiration(cups_array_t *credentials);</p>
798d6e29 2969<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2970<table class="list"><tbody>
2971<tr><th>credentials</th>
2972 <td class="description">Credentials</td></tr>
2973</tbody></table>
798d6e29
MS
2974<h4 class="returnvalue">Return Value</h4>
2975 <p class="description">Expiration date of credentials</p>
2976<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="httpCredentialsGetTrust">httpCredentialsGetTrust</a></h3>
2977 <p class="description">Return the trust of credentials.</p>
2978<p class="code">
98d88c8d 2979<a href="#http_trust_t">http_trust_t</a> httpCredentialsGetTrust(cups_array_t *credentials, const char *common_name);</p>
798d6e29 2980<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2981<table class="list"><tbody>
2982<tr><th>credentials</th>
2983 <td class="description">Credentials</td></tr>
2984<tr><th>common_name</th>
2985 <td class="description">Common name for trust lookup</td></tr>
2986</tbody></table>
798d6e29
MS
2987<h4 class="returnvalue">Return Value</h4>
2988 <p class="description">Level of trust</p>
2989<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="httpCredentialsString">httpCredentialsString</a></h3>
2990 <p class="description">Return a string representing the credentials.</p>
2991<p class="code">
98d88c8d
MS
2992size_t httpCredentialsString(cups_array_t *credentials, char *buffer, size_t bufsize);</p>
2993<h4 class="parameters">Parameters</h4>
2994<table class="list"><tbody>
2995<tr><th>credentials</th>
2996 <td class="description">Credentials</td></tr>
2997<tr><th>buffer</th>
2998 <td class="description">Buffer or <code>NULL</code></td></tr>
2999<tr><th>bufsize</th>
3000 <td class="description">Size of buffer</td></tr>
3001</tbody></table>
798d6e29
MS
3002<h4 class="returnvalue">Return Value</h4>
3003 <p class="description">Total size of credentials string</p>
798d6e29
MS
3004<h3 class="function"><span class="info">&#160;CUPS 1.1.21/macOS 10.4&#160;</span><a id="httpDecode64_2">httpDecode64_2</a></h3>
3005 <p class="description">Base64-decode a string.</p>
3006<p class="code">
98d88c8d
MS
3007char *httpDecode64_2(char *out, int *outlen, const char *in);</p>
3008<h4 class="parameters">Parameters</h4>
3009<table class="list"><tbody>
3010<tr><th>out</th>
3011 <td class="description">String to write to</td></tr>
3012<tr><th>outlen</th>
3013 <td class="description">Size of output string</td></tr>
3014<tr><th>in</th>
3015 <td class="description">String to read from</td></tr>
3016</tbody></table>
798d6e29
MS
3017<h4 class="returnvalue">Return Value</h4>
3018 <p class="description">Decoded string</p>
98d88c8d
MS
3019<h4 class="discussion">Discussion</h4>
3020 <p class="discussion">The caller must initialize &quot;outlen&quot; to the maximum size of the decoded
65bebeac 3021string before calling <code>httpDecode64_2</code>. On return &quot;outlen&quot; contains the
98d88c8d
MS
3022decoded length of the string.
3023
3024</p>
798d6e29
MS
3025<h3 class="function"><a id="httpDelete">httpDelete</a></h3>
3026 <p class="description">Send a DELETE request to the server.</p>
3027<p class="code">
98d88c8d 3028int httpDelete(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3029<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3030<table class="list"><tbody>
3031<tr><th>http</th>
3032 <td class="description">HTTP connection</td></tr>
3033<tr><th>uri</th>
3034 <td class="description">URI to delete</td></tr>
3035</tbody></table>
798d6e29
MS
3036<h4 class="returnvalue">Return Value</h4>
3037 <p class="description">Status of call (0 = success)</p>
798d6e29
MS
3038<h3 class="function"><span class="info">&#160;CUPS 1.1.21/macOS 10.4&#160;</span><a id="httpEncode64_2">httpEncode64_2</a></h3>
3039 <p class="description">Base64-encode a string.</p>
3040<p class="code">
98d88c8d
MS
3041char *httpEncode64_2(char *out, int outlen, const char *in, int inlen);</p>
3042<h4 class="parameters">Parameters</h4>
3043<table class="list"><tbody>
3044<tr><th>out</th>
3045 <td class="description">String to write to</td></tr>
3046<tr><th>outlen</th>
3047 <td class="description">Maximum size of output string</td></tr>
3048<tr><th>in</th>
3049 <td class="description">String to read from</td></tr>
3050<tr><th>inlen</th>
3051 <td class="description">Size of input string</td></tr>
3052</tbody></table>
798d6e29
MS
3053<h4 class="returnvalue">Return Value</h4>
3054 <p class="description">Encoded string</p>
3055<h3 class="function"><a id="httpEncryption">httpEncryption</a></h3>
3056 <p class="description">Set the required encryption on the link.</p>
3057<p class="code">
98d88c8d 3058int httpEncryption(<a href="#http_t">http_t</a> *http, <a href="#http_encryption_t">http_encryption_t</a> e);</p>
798d6e29 3059<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3060<table class="list"><tbody>
3061<tr><th>http</th>
3062 <td class="description">HTTP connection</td></tr>
3063<tr><th>e</th>
3064 <td class="description">New encryption preference</td></tr>
3065</tbody></table>
798d6e29
MS
3066<h4 class="returnvalue">Return Value</h4>
3067 <p class="description">-1 on error, 0 on success</p>
3068<h3 class="function"><a id="httpError">httpError</a></h3>
3069 <p class="description">Get the last error on a connection.</p>
3070<p class="code">
98d88c8d 3071int httpError(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3072<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3073<table class="list"><tbody>
3074<tr><th>http</th>
3075 <td class="description">HTTP connection</td></tr>
3076</tbody></table>
798d6e29
MS
3077<h4 class="returnvalue">Return Value</h4>
3078 <p class="description">Error code (errno) value</p>
3079<h3 class="function"><a id="httpFieldValue">httpFieldValue</a></h3>
3080 <p class="description">Return the HTTP field enumeration value for a field
3081name.</p>
3082<p class="code">
98d88c8d 3083<a href="#http_field_t">http_field_t</a> httpFieldValue(const char *name);</p>
798d6e29 3084<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3085<table class="list"><tbody>
3086<tr><th>name</th>
3087 <td class="description">String name</td></tr>
3088</tbody></table>
798d6e29
MS
3089<h4 class="returnvalue">Return Value</h4>
3090 <p class="description">Field index</p>
3091<h3 class="function"><a id="httpFlush">httpFlush</a></h3>
65bebeac 3092 <p class="description">Flush data read from a HTTP connection.</p>
798d6e29 3093<p class="code">
98d88c8d 3094void httpFlush(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3095<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3096<table class="list"><tbody>
3097<tr><th>http</th>
3098 <td class="description">HTTP connection</td></tr>
3099</tbody></table>
798d6e29 3100<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpFlushWrite">httpFlushWrite</a></h3>
65bebeac 3101 <p class="description">Flush data written to a HTTP connection.</p>
798d6e29 3102<p class="code">
98d88c8d 3103int httpFlushWrite(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3104<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3105<table class="list"><tbody>
3106<tr><th>http</th>
3107 <td class="description">HTTP connection</td></tr>
3108</tbody></table>
798d6e29
MS
3109<h4 class="returnvalue">Return Value</h4>
3110 <p class="description">Bytes written or -1 on error</p>
3111<h3 class="function"><a id="httpFreeCredentials">httpFreeCredentials</a></h3>
98d88c8d 3112 <p class="description">Free an array of credentials.</p>
798d6e29 3113<p class="code">
98d88c8d 3114void httpFreeCredentials(cups_array_t *credentials);</p>
798d6e29 3115<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3116<table class="list"><tbody>
3117<tr><th>credentials</th>
3118 <td class="description">Array of credentials</td></tr>
3119</tbody></table>
798d6e29
MS
3120<h3 class="function"><a id="httpGet">httpGet</a></h3>
3121 <p class="description">Send a GET request to the server.</p>
3122<p class="code">
98d88c8d 3123int httpGet(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3124<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3125<table class="list"><tbody>
3126<tr><th>http</th>
3127 <td class="description">HTTP connection</td></tr>
3128<tr><th>uri</th>
3129 <td class="description">URI to get</td></tr>
3130</tbody></table>
798d6e29
MS
3131<h4 class="returnvalue">Return Value</h4>
3132 <p class="description">Status of call (0 = success)</p>
3133<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetActivity">httpGetActivity</a></h3>
3134 <p class="description">Get the most recent activity for a connection.</p>
3135<p class="code">
98d88c8d 3136time_t httpGetActivity(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3137<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3138<table class="list"><tbody>
3139<tr><th>http</th>
3140 <td class="description">HTTP connection</td></tr>
3141</tbody></table>
798d6e29
MS
3142<h4 class="returnvalue">Return Value</h4>
3143 <p class="description">Time of last read or write</p>
3144<h4 class="discussion">Discussion</h4>
65bebeac 3145 <p class="discussion">The return value is the time in seconds of the last read or write.
798d6e29
MS
3146
3147</p>
3148<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetAddress">httpGetAddress</a></h3>
3149 <p class="description">Get the address of the connected peer of a connection.</p>
3150<p class="code">
98d88c8d 3151<a href="#http_addr_t">http_addr_t</a> *httpGetAddress(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3152<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3153<table class="list"><tbody>
3154<tr><th>http</th>
3155 <td class="description">HTTP connection</td></tr>
3156</tbody></table>
798d6e29
MS
3157<h4 class="returnvalue">Return Value</h4>
3158 <p class="description">Connected address or <code>NULL</code></p>
3159<h4 class="discussion">Discussion</h4>
65bebeac
MS
3160 <p class="discussion">For connections created with <a href="#httpConnect2"><code>httpConnect2</code></a>, the address is for the
3161server. For connections created with <a href="#httpAccept"><code>httpAccept</code></a>, the address is for
3162the client.<br>
3163<br>
3164Returns <code>NULL</code> if the socket is currently unconnected.
798d6e29
MS
3165
3166</p>
3167<h3 class="function"><span class="info">&#160;CUPS 1.3/macOS 10.5&#160;</span><a id="httpGetAuthString">httpGetAuthString</a></h3>
3168 <p class="description">Get the current authorization string.</p>
3169<p class="code">
98d88c8d 3170char *httpGetAuthString(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3171<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3172<table class="list"><tbody>
3173<tr><th>http</th>
3174 <td class="description">HTTP connection</td></tr>
3175</tbody></table>
798d6e29
MS
3176<h4 class="returnvalue">Return Value</h4>
3177 <p class="description">Authorization string</p>
3178<h4 class="discussion">Discussion</h4>
65bebeac
MS
3179 <p class="discussion">The authorization string is set by <a href="#cupsDoAuthentication"><code>cupsDoAuthentication</code></a> and
3180<a href="#httpSetAuthString"><code>httpSetAuthString</code></a>. Use <a href="#httpGetAuthString"><code>httpGetAuthString</code></a> to retrieve the
3181string to use with <a href="#httpSetField"><code>httpSetField</code></a> for the
3182<code>HTTP_FIELD_AUTHORIZATION</code> value.
798d6e29
MS
3183
3184</p>
3185<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetBlocking">httpGetBlocking</a></h3>
3186 <p class="description">Get the blocking/non-block state of a connection.</p>
3187<p class="code">
98d88c8d 3188int httpGetBlocking(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3189<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3190<table class="list"><tbody>
3191<tr><th>http</th>
3192 <td class="description">HTTP connection</td></tr>
3193</tbody></table>
798d6e29
MS
3194<h4 class="returnvalue">Return Value</h4>
3195 <p class="description">1 if blocking, 0 if non-blocking</p>
3196<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpGetContentEncoding">httpGetContentEncoding</a></h3>
3197 <p class="description">Get a common content encoding, if any, between
3198the client and server.</p>
3199<p class="code">
98d88c8d 3200const char *httpGetContentEncoding(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3201<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3202<table class="list"><tbody>
3203<tr><th>http</th>
3204 <td class="description">HTTP connection</td></tr>
3205</tbody></table>
798d6e29
MS
3206<h4 class="returnvalue">Return Value</h4>
3207 <p class="description">Content-Coding value or
3208<code>NULL</code> for the identity
3209coding.</p>
3210<h4 class="discussion">Discussion</h4>
3211 <p class="discussion">This function uses the value of the Accepts-Encoding HTTP header and must be
3212called after receiving a response from the server or a request from the
3213client. The value returned can be use in subsequent requests (for clients)
3214or in the response (for servers) in order to compress the content stream.
3215
3216</p>
3217<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="httpGetCookie">httpGetCookie</a></h3>
3218 <p class="description">Get any cookie data from the response.</p>
3219<p class="code">
98d88c8d 3220const char *httpGetCookie(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3221<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3222<table class="list"><tbody>
3223<tr><th>http</th>
3224 <td class="description">HTTP connection</td></tr>
3225</tbody></table>
798d6e29 3226<h4 class="returnvalue">Return Value</h4>
65bebeac 3227 <p class="description">Cookie data or <code>NULL</code></p>
798d6e29
MS
3228<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetDateString2">httpGetDateString2</a></h3>
3229 <p class="description">Get a formatted date/time string from a time value.</p>
3230<p class="code">
98d88c8d
MS
3231const char *httpGetDateString2(time_t t, char *s, int slen);</p>
3232<h4 class="parameters">Parameters</h4>
3233<table class="list"><tbody>
3234<tr><th>t</th>
65bebeac 3235 <td class="description">Time in seconds</td></tr>
98d88c8d
MS
3236<tr><th>s</th>
3237 <td class="description">String buffer</td></tr>
3238<tr><th>slen</th>
3239 <td class="description">Size of string buffer</td></tr>
3240</tbody></table>
798d6e29
MS
3241<h4 class="returnvalue">Return Value</h4>
3242 <p class="description">Date/time string</p>
3243<h3 class="function"><a id="httpGetDateTime">httpGetDateTime</a></h3>
3244 <p class="description">Get a time value from a formatted date/time string.</p>
3245<p class="code">
98d88c8d 3246time_t httpGetDateTime(const char *s);</p>
798d6e29 3247<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3248<table class="list"><tbody>
3249<tr><th>s</th>
3250 <td class="description">Date/time string</td></tr>
3251</tbody></table>
798d6e29 3252<h4 class="returnvalue">Return Value</h4>
65bebeac 3253 <p class="description">Time in seconds</p>
798d6e29
MS
3254<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetEncryption">httpGetEncryption</a></h3>
3255 <p class="description">Get the current encryption mode of a connection.</p>
3256<p class="code">
98d88c8d 3257<a href="#http_encryption_t">http_encryption_t</a> httpGetEncryption(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3258<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3259<table class="list"><tbody>
3260<tr><th>http</th>
3261 <td class="description">HTTP connection</td></tr>
3262</tbody></table>
798d6e29
MS
3263<h4 class="returnvalue">Return Value</h4>
3264 <p class="description">Current encryption mode</p>
3265<h4 class="discussion">Discussion</h4>
3266 <p class="discussion">This function returns the encryption mode for the connection. Use the
3267<a href="#httpIsEncrypted"><code>httpIsEncrypted</code></a> function to determine whether a TLS session has
3268been established.
3269
3270</p>
3271<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpGetExpect">httpGetExpect</a></h3>
3272 <p class="description">Get the value of the Expect header, if any.</p>
3273<p class="code">
98d88c8d 3274http_status_t httpGetExpect(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3275<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3276<table class="list"><tbody>
3277<tr><th>http</th>
3278 <td class="description">HTTP connection</td></tr>
3279</tbody></table>
798d6e29
MS
3280<h4 class="returnvalue">Return Value</h4>
3281 <p class="description">Expect: status, if any</p>
3282<h4 class="discussion">Discussion</h4>
3283 <p class="discussion">Returns <code>HTTP_STATUS_NONE</code> if there is no Expect header, otherwise
3284returns the expected HTTP status code, typically <code>HTTP_STATUS_CONTINUE</code>.
3285
3286</p>
3287<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetFd">httpGetFd</a></h3>
3288 <p class="description">Get the file descriptor associated with a connection.</p>
3289<p class="code">
98d88c8d 3290int httpGetFd(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3291<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3292<table class="list"><tbody>
3293<tr><th>http</th>
3294 <td class="description">HTTP connection</td></tr>
3295</tbody></table>
798d6e29
MS
3296<h4 class="returnvalue">Return Value</h4>
3297 <p class="description">File descriptor or -1 if none</p>
3298<h3 class="function"><a id="httpGetField">httpGetField</a></h3>
3299 <p class="description">Get a field value from a request/response.</p>
3300<p class="code">
98d88c8d 3301const char *httpGetField(<a href="#http_t">http_t</a> *http, <a href="#http_field_t">http_field_t</a> field);</p>
798d6e29 3302<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3303<table class="list"><tbody>
3304<tr><th>http</th>
3305 <td class="description">HTTP connection</td></tr>
3306<tr><th>field</th>
3307 <td class="description">Field to get</td></tr>
3308</tbody></table>
798d6e29
MS
3309<h4 class="returnvalue">Return Value</h4>
3310 <p class="description">Field value</p>
798d6e29
MS
3311<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetHostname">httpGetHostname</a></h3>
3312 <p class="description">Get the FQDN for the connection or local system.</p>
3313<p class="code">
98d88c8d
MS
3314const char *httpGetHostname(<a href="#http_t">http_t</a> *http, char *s, int slen);</p>
3315<h4 class="parameters">Parameters</h4>
3316<table class="list"><tbody>
3317<tr><th>http</th>
3318 <td class="description">HTTP connection or NULL</td></tr>
3319<tr><th>s</th>
3320 <td class="description">String buffer for name</td></tr>
3321<tr><th>slen</th>
3322 <td class="description">Size of buffer</td></tr>
3323</tbody></table>
798d6e29
MS
3324<h4 class="returnvalue">Return Value</h4>
3325 <p class="description">FQDN for connection or system</p>
3326<h4 class="discussion">Discussion</h4>
3327 <p class="discussion">When &quot;http&quot; points to a connected socket, return the hostname or
3328address that was used in the call to httpConnect() or httpConnectEncrypt(),
3329or the address of the client for the connection from httpAcceptConnection().
3330Otherwise, return the FQDN for the local system using both gethostname()
3331and gethostbyname() to get the local hostname with domain.
3332
3333</p>
3334<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetKeepAlive">httpGetKeepAlive</a></h3>
3335 <p class="description">Get the current Keep-Alive state of the connection.</p>
3336<p class="code">
98d88c8d 3337<a href="#http_keepalive_t">http_keepalive_t</a> httpGetKeepAlive(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3338<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3339<table class="list"><tbody>
3340<tr><th>http</th>
3341 <td class="description">HTTP connection</td></tr>
3342</tbody></table>
798d6e29
MS
3343<h4 class="returnvalue">Return Value</h4>
3344 <p class="description">Keep-Alive state</p>
798d6e29
MS
3345<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetLength2">httpGetLength2</a></h3>
3346 <p class="description">Get the amount of data remaining from the
3347content-length or transfer-encoding fields.</p>
3348<p class="code">
98d88c8d 3349off_t httpGetLength2(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3350<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3351<table class="list"><tbody>
3352<tr><th>http</th>
3353 <td class="description">HTTP connection</td></tr>
3354</tbody></table>
798d6e29
MS
3355<h4 class="returnvalue">Return Value</h4>
3356 <p class="description">Content length</p>
3357<h4 class="discussion">Discussion</h4>
3358 <p class="discussion">This function returns the complete content length, even for
3359content larger than 2^31 - 1.
3360
3361</p>
3362<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetPending">httpGetPending</a></h3>
3363 <p class="description">Get the number of bytes that are buffered for writing.</p>
3364<p class="code">
98d88c8d 3365size_t httpGetPending(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3366<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3367<table class="list"><tbody>
3368<tr><th>http</th>
3369 <td class="description">HTTP connection</td></tr>
3370</tbody></table>
798d6e29
MS
3371<h4 class="returnvalue">Return Value</h4>
3372 <p class="description">Number of bytes buffered</p>
3373<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetReady">httpGetReady</a></h3>
3374 <p class="description">Get the number of bytes that can be read without blocking.</p>
3375<p class="code">
98d88c8d 3376size_t httpGetReady(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3377<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3378<table class="list"><tbody>
3379<tr><th>http</th>
3380 <td class="description">HTTP connection</td></tr>
3381</tbody></table>
798d6e29
MS
3382<h4 class="returnvalue">Return Value</h4>
3383 <p class="description">Number of bytes available</p>
3384<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetRemaining">httpGetRemaining</a></h3>
3385 <p class="description">Get the number of remaining bytes in the message
3386body or current chunk.</p>
3387<p class="code">
98d88c8d 3388size_t httpGetRemaining(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3389<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3390<table class="list"><tbody>
3391<tr><th>http</th>
3392 <td class="description">HTTP connection</td></tr>
3393</tbody></table>
798d6e29
MS
3394<h4 class="returnvalue">Return Value</h4>
3395 <p class="description">Remaining bytes</p>
3396<h4 class="discussion">Discussion</h4>
3397 <p class="discussion">The <a href="#httpIsChunked"><code>httpIsChunked</code></a> function can be used to determine whether the
3398message body is chunked or fixed-length.
3399
3400</p>
3401<h3 class="function"><a id="httpGetState">httpGetState</a></h3>
3402 <p class="description">Get the current state of the HTTP request.</p>
3403<p class="code">
98d88c8d 3404<a href="#http_state_t">http_state_t</a> httpGetState(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3405<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3406<table class="list"><tbody>
3407<tr><th>http</th>
3408 <td class="description">HTTP connection</td></tr>
3409</tbody></table>
798d6e29
MS
3410<h4 class="returnvalue">Return Value</h4>
3411 <p class="description">HTTP state</p>
3412<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetStatus">httpGetStatus</a></h3>
3413 <p class="description">Get the status of the last HTTP request.</p>
3414<p class="code">
98d88c8d 3415http_status_t httpGetStatus(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3416<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3417<table class="list"><tbody>
3418<tr><th>http</th>
3419 <td class="description">HTTP connection</td></tr>
3420</tbody></table>
798d6e29
MS
3421<h4 class="returnvalue">Return Value</h4>
3422 <p class="description">HTTP status</p>
798d6e29
MS
3423<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetSubField2">httpGetSubField2</a></h3>
3424 <p class="description">Get a sub-field value.</p>
3425<p class="code">
98d88c8d
MS
3426char *httpGetSubField2(<a href="#http_t">http_t</a> *http, <a href="#http_field_t">http_field_t</a> field, const char *name, char *value, int valuelen);</p>
3427<h4 class="parameters">Parameters</h4>
3428<table class="list"><tbody>
3429<tr><th>http</th>
3430 <td class="description">HTTP connection</td></tr>
3431<tr><th>field</th>
3432 <td class="description">Field index</td></tr>
3433<tr><th>name</th>
3434 <td class="description">Name of sub-field</td></tr>
3435<tr><th>value</th>
3436 <td class="description">Value string</td></tr>
3437<tr><th>valuelen</th>
3438 <td class="description">Size of value buffer</td></tr>
3439</tbody></table>
798d6e29 3440<h4 class="returnvalue">Return Value</h4>
65bebeac 3441 <p class="description">Value or <code>NULL</code></p>
798d6e29
MS
3442<h3 class="function"><a id="httpGetVersion">httpGetVersion</a></h3>
3443 <p class="description">Get the HTTP version at the other end.</p>
3444<p class="code">
98d88c8d 3445<a href="#http_version_t">http_version_t</a> httpGetVersion(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3446<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3447<table class="list"><tbody>
3448<tr><th>http</th>
3449 <td class="description">HTTP connection</td></tr>
3450</tbody></table>
798d6e29
MS
3451<h4 class="returnvalue">Return Value</h4>
3452 <p class="description">Version number</p>
3453<h3 class="function"><a id="httpGets">httpGets</a></h3>
3454 <p class="description">Get a line of text from a HTTP connection.</p>
3455<p class="code">
98d88c8d
MS
3456char *httpGets(char *line, int length, <a href="#http_t">http_t</a> *http);</p>
3457<h4 class="parameters">Parameters</h4>
3458<table class="list"><tbody>
3459<tr><th>line</th>
3460 <td class="description">Line to read into</td></tr>
3461<tr><th>length</th>
3462 <td class="description">Max length of buffer</td></tr>
3463<tr><th>http</th>
3464 <td class="description">HTTP connection</td></tr>
3465</tbody></table>
798d6e29 3466<h4 class="returnvalue">Return Value</h4>
65bebeac 3467 <p class="description">Line or <code>NULL</code></p>
798d6e29
MS
3468<h3 class="function"><a id="httpHead">httpHead</a></h3>
3469 <p class="description">Send a HEAD request to the server.</p>
3470<p class="code">
98d88c8d 3471int httpHead(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3472<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3473<table class="list"><tbody>
3474<tr><th>http</th>
3475 <td class="description">HTTP connection</td></tr>
3476<tr><th>uri</th>
3477 <td class="description">URI for head</td></tr>
3478</tbody></table>
798d6e29
MS
3479<h4 class="returnvalue">Return Value</h4>
3480 <p class="description">Status of call (0 = success)</p>
3481<h3 class="function"><a id="httpInitialize">httpInitialize</a></h3>
53af7f21
MS
3482 <p class="description">Initialize the HTTP interface library and set the
3483default HTTP proxy (if any).</p>
98d88c8d
MS
3484<p class="code">
3485void httpInitialize(void);</p>
798d6e29
MS
3486<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpIsChunked">httpIsChunked</a></h3>
3487 <p class="description">Report whether a message body is chunked.</p>
3488<p class="code">
98d88c8d 3489int httpIsChunked(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3490<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3491<table class="list"><tbody>
3492<tr><th>http</th>
3493 <td class="description">HTTP connection</td></tr>
3494</tbody></table>
798d6e29
MS
3495<h4 class="returnvalue">Return Value</h4>
3496 <p class="description">1 if chunked, 0 if not</p>
3497<h4 class="discussion">Discussion</h4>
3498 <p class="discussion">This function returns non-zero if the message body is composed of
3499variable-length chunks.
3500
3501</p>
3502<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpIsEncrypted">httpIsEncrypted</a></h3>
3503 <p class="description">Report whether a connection is encrypted.</p>
3504<p class="code">
98d88c8d 3505int httpIsEncrypted(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3506<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3507<table class="list"><tbody>
3508<tr><th>http</th>
3509 <td class="description">HTTP connection</td></tr>
3510</tbody></table>
798d6e29
MS
3511<h4 class="returnvalue">Return Value</h4>
3512 <p class="description">1 if encrypted, 0 if not</p>
3513<h4 class="discussion">Discussion</h4>
3514 <p class="discussion">This function returns non-zero if the connection is currently encrypted.
3515
3516</p>
3517<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpLoadCredentials">httpLoadCredentials</a></h3>
3518 <p class="description">Load X.509 credentials from a keychain file.</p>
3519<p class="code">
98d88c8d
MS
3520int httpLoadCredentials(const char *path, cups_array_t **credentials, const char *common_name);</p>
3521<h4 class="parameters">Parameters</h4>
3522<table class="list"><tbody>
3523<tr><th>path</th>
3524 <td class="description">Keychain path or <code>NULL</code> for default</td></tr>
3525<tr><th>credentials</th>
3526 <td class="description">Credentials</td></tr>
3527<tr><th>common_name</th>
3528 <td class="description">Common name for credentials</td></tr>
3529</tbody></table>
798d6e29
MS
3530<h4 class="returnvalue">Return Value</h4>
3531 <p class="description">0 on success, -1 on error</p>
3532<h3 class="function"><a id="httpOptions">httpOptions</a></h3>
3533 <p class="description">Send an OPTIONS request to the server.</p>
3534<p class="code">
98d88c8d 3535int httpOptions(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3536<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3537<table class="list"><tbody>
3538<tr><th>http</th>
3539 <td class="description">HTTP connection</td></tr>
3540<tr><th>uri</th>
3541 <td class="description">URI for options</td></tr>
3542</tbody></table>
798d6e29
MS
3543<h4 class="returnvalue">Return Value</h4>
3544 <p class="description">Status of call (0 = success)</p>
3545<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpPeek">httpPeek</a></h3>
3546 <p class="description">Peek at data from a HTTP connection.</p>
3547<p class="code">
98d88c8d
MS
3548ssize_t httpPeek(<a href="#http_t">http_t</a> *http, char *buffer, size_t length);</p>
3549<h4 class="parameters">Parameters</h4>
3550<table class="list"><tbody>
3551<tr><th>http</th>
3552 <td class="description">HTTP connection</td></tr>
3553<tr><th>buffer</th>
3554 <td class="description">Buffer for data</td></tr>
3555<tr><th>length</th>
3556 <td class="description">Maximum number of bytes</td></tr>
3557</tbody></table>
798d6e29
MS
3558<h4 class="returnvalue">Return Value</h4>
3559 <p class="description">Number of bytes copied</p>
3560<h4 class="discussion">Discussion</h4>
3561 <p class="discussion">This function copies available data from the given HTTP connection, reading
3562a buffer as needed. The data is still available for reading using
65bebeac 3563<a href="#httpRead2"><code>httpRead2</code></a>.<br>
798d6e29
MS
3564<br>
3565For non-blocking connections the usual timeouts apply.
3566
3567</p>
3568<h3 class="function"><a id="httpPost">httpPost</a></h3>
3569 <p class="description">Send a POST request to the server.</p>
3570<p class="code">
98d88c8d 3571int httpPost(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3572<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3573<table class="list"><tbody>
3574<tr><th>http</th>
3575 <td class="description">HTTP connection</td></tr>
3576<tr><th>uri</th>
3577 <td class="description">URI for post</td></tr>
3578</tbody></table>
798d6e29
MS
3579<h4 class="returnvalue">Return Value</h4>
3580 <p class="description">Status of call (0 = success)</p>
3581<h3 class="function"><a id="httpPut">httpPut</a></h3>
3582 <p class="description">Send a PUT request to the server.</p>
3583<p class="code">
98d88c8d 3584int httpPut(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3585<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3586<table class="list"><tbody>
3587<tr><th>http</th>
3588 <td class="description">HTTP connection</td></tr>
3589<tr><th>uri</th>
3590 <td class="description">URI to put</td></tr>
3591</tbody></table>
798d6e29
MS
3592<h4 class="returnvalue">Return Value</h4>
3593 <p class="description">Status of call (0 = success)</p>
798d6e29
MS
3594<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpRead2">httpRead2</a></h3>
3595 <p class="description">Read data from a HTTP connection.</p>
3596<p class="code">
98d88c8d
MS
3597ssize_t httpRead2(<a href="#http_t">http_t</a> *http, char *buffer, size_t length);</p>
3598<h4 class="parameters">Parameters</h4>
3599<table class="list"><tbody>
3600<tr><th>http</th>
3601 <td class="description">HTTP connection</td></tr>
3602<tr><th>buffer</th>
3603 <td class="description">Buffer for data</td></tr>
3604<tr><th>length</th>
3605 <td class="description">Maximum number of bytes</td></tr>
3606</tbody></table>
798d6e29
MS
3607<h4 class="returnvalue">Return Value</h4>
3608 <p class="description">Number of bytes read</p>
3609<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpReadRequest">httpReadRequest</a></h3>
3610 <p class="description">Read a HTTP request from a connection.</p>
3611<p class="code">
98d88c8d
MS
3612<a href="#http_state_t">http_state_t</a> httpReadRequest(<a href="#http_t">http_t</a> *http, char *uri, size_t urilen);</p>
3613<h4 class="parameters">Parameters</h4>
3614<table class="list"><tbody>
3615<tr><th>http</th>
3616 <td class="description">HTTP connection</td></tr>
3617<tr><th>uri</th>
3618 <td class="description">URI buffer</td></tr>
3619<tr><th>urilen</th>
3620 <td class="description">Size of URI buffer</td></tr>
3621</tbody></table>
798d6e29
MS
3622<h4 class="returnvalue">Return Value</h4>
3623 <p class="description">New state of connection</p>
798d6e29
MS
3624<h3 class="function"><a id="httpReconnect2">httpReconnect2</a></h3>
3625 <p class="description">Reconnect to a HTTP server with timeout and optional
3626cancel.</p>
3627<p class="code">
98d88c8d
MS
3628int httpReconnect2(<a href="#http_t">http_t</a> *http, int msec, int *cancel);</p>
3629<h4 class="parameters">Parameters</h4>
3630<table class="list"><tbody>
3631<tr><th>http</th>
3632 <td class="description">HTTP connection</td></tr>
3633<tr><th>msec</th>
3634 <td class="description">Timeout in milliseconds</td></tr>
3635<tr><th>cancel</th>
3636 <td class="description">Pointer to &quot;cancel&quot; variable</td></tr>
3637</tbody></table>
798d6e29
MS
3638<h4 class="returnvalue">Return Value</h4>
3639 <p class="description">0 on success, non-zero on failure</p>
3640<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpResolveHostname">httpResolveHostname</a></h3>
3641 <p class="description">Resolve the hostname of the HTTP connection
3642address.</p>
3643<p class="code">
98d88c8d
MS
3644const char *httpResolveHostname(<a href="#http_t">http_t</a> *http, char *buffer, size_t bufsize);</p>
3645<h4 class="parameters">Parameters</h4>
3646<table class="list"><tbody>
3647<tr><th>http</th>
3648 <td class="description">HTTP connection</td></tr>
3649<tr><th>buffer</th>
3650 <td class="description">Hostname buffer</td></tr>
3651<tr><th>bufsize</th>
3652 <td class="description">Size of buffer</td></tr>
3653</tbody></table>
798d6e29
MS
3654<h4 class="returnvalue">Return Value</h4>
3655 <p class="description">Resolved hostname or <code>NULL</code></p>
3656<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpSaveCredentials">httpSaveCredentials</a></h3>
3657 <p class="description">Save X.509 credentials to a keychain file.</p>
3658<p class="code">
98d88c8d
MS
3659int httpSaveCredentials(const char *path, cups_array_t *credentials, const char *common_name);</p>
3660<h4 class="parameters">Parameters</h4>
3661<table class="list"><tbody>
3662<tr><th>path</th>
3663 <td class="description">Keychain path or <code>NULL</code> for default</td></tr>
3664<tr><th>credentials</th>
3665 <td class="description">Credentials</td></tr>
3666<tr><th>common_name</th>
3667 <td class="description">Common name for credentials</td></tr>
3668</tbody></table>
798d6e29
MS
3669<h4 class="returnvalue">Return Value</h4>
3670 <p class="description">-1 on error, 0 on success</p>
798d6e29
MS
3671<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpSeparateURI">httpSeparateURI</a></h3>
3672 <p class="description">Separate a Universal Resource Identifier into its
3673components.</p>
3674<p class="code">
98d88c8d
MS
3675<a href="#http_uri_status_t">http_uri_status_t</a> httpSeparateURI(<a href="#http_uri_coding_t">http_uri_coding_t</a> decoding, const char *uri, char *scheme, int schemelen, char *username, int usernamelen, char *host, int hostlen, int *port, char *resource, int resourcelen);</p>
3676<h4 class="parameters">Parameters</h4>
3677<table class="list"><tbody>
3678<tr><th>decoding</th>
3679 <td class="description">Decoding flags</td></tr>
3680<tr><th>uri</th>
3681 <td class="description">Universal Resource Identifier</td></tr>
3682<tr><th>scheme</th>
3683 <td class="description">Scheme (http, https, etc.)</td></tr>
3684<tr><th>schemelen</th>
3685 <td class="description">Size of scheme buffer</td></tr>
3686<tr><th>username</th>
3687 <td class="description">Username</td></tr>
3688<tr><th>usernamelen</th>
3689 <td class="description">Size of username buffer</td></tr>
3690<tr><th>host</th>
3691 <td class="description">Hostname</td></tr>
3692<tr><th>hostlen</th>
3693 <td class="description">Size of hostname buffer</td></tr>
3694<tr><th>port</th>
3695 <td class="description">Port number to use</td></tr>
3696<tr><th>resource</th>
3697 <td class="description">Resource/filename</td></tr>
3698<tr><th>resourcelen</th>
3699 <td class="description">Size of resource buffer</td></tr>
3700</tbody></table>
798d6e29
MS
3701<h4 class="returnvalue">Return Value</h4>
3702 <p class="description">Result of separation</p>
98d88c8d 3703<h3 class="function"><span class="info">&#160;CUPS 1.3/macOS 10.5&#160;</span><a id="httpSetAuthString">httpSetAuthString</a></h3>
53af7f21 3704 <p class="description">Set the current authorization string.</p>
98d88c8d
MS
3705<p class="code">
3706void httpSetAuthString(<a href="#http_t">http_t</a> *http, const char *scheme, const char *data);</p>
3707<h4 class="parameters">Parameters</h4>
3708<table class="list"><tbody>
3709<tr><th>http</th>
3710 <td class="description">HTTP connection</td></tr>
3711<tr><th>scheme</th>
3712 <td class="description">Auth scheme (NULL to clear it)</td></tr>
3713<tr><th>data</th>
3714 <td class="description">Auth data (NULL for none)</td></tr>
3715</tbody></table>
3716<h4 class="discussion">Discussion</h4>
798d6e29 3717 <p class="discussion">This function just stores a copy of the current authorization string in
65bebeac
MS
3718the HTTP connection object. You must still call <a href="#httpSetField"><code>httpSetField</code></a> to set
3719<code>HTTP_FIELD_AUTHORIZATION</code> prior to issuing a HTTP request using
3720<a href="#httpGet"><code>httpGet</code></a>, <a href="#httpHead"><code>httpHead</code></a>, <a href="#httpOptions"><code>httpOptions</code></a>, <a href="#httpPost"><code>httpPost</code></a>, or
3721<a href="#httpPut"><code>httpPut</code></a>.
798d6e29
MS
3722
3723</p>
98d88c8d
MS
3724<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="httpSetCookie">httpSetCookie</a></h3>
3725 <p class="description">Set the cookie value(s).</p>
798d6e29 3726<p class="code">
98d88c8d 3727void httpSetCookie(<a href="#http_t">http_t</a> *http, const char *cookie);</p>
798d6e29 3728<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3729<table class="list"><tbody>
3730<tr><th>http</th>
3731 <td class="description">Connection</td></tr>
3732<tr><th>cookie</th>
3733 <td class="description">Cookie string</td></tr>
3734</tbody></table>
798d6e29
MS
3735<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="httpSetCredentials">httpSetCredentials</a></h3>
3736 <p class="description">Set the credentials associated with an encrypted
3737connection.</p>
3738<p class="code">
98d88c8d 3739int httpSetCredentials(<a href="#http_t">http_t</a> *http, cups_array_t *credentials);</p>
798d6e29 3740<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3741<table class="list"><tbody>
3742<tr><th>http</th>
3743 <td class="description">HTTP connection</td></tr>
3744<tr><th>credentials</th>
3745 <td class="description">Array of credentials</td></tr>
3746</tbody></table>
798d6e29
MS
3747<h4 class="returnvalue">Return Value</h4>
3748 <p class="description">Status of call (0 = success)</p>
98d88c8d 3749<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpSetDefaultField">httpSetDefaultField</a></h3>
53af7f21 3750 <p class="description">Set the default value of an HTTP header.</p>
98d88c8d
MS
3751<p class="code">
3752void httpSetDefaultField(<a href="#http_t">http_t</a> *http, <a href="#http_field_t">http_field_t</a> field, const char *value);</p>
3753<h4 class="parameters">Parameters</h4>
3754<table class="list"><tbody>
3755<tr><th>http</th>
3756 <td class="description">HTTP connection</td></tr>
3757<tr><th>field</th>
3758 <td class="description">Field index</td></tr>
3759<tr><th>value</th>
3760 <td class="description">Value</td></tr>
3761</tbody></table>
3762<h4 class="discussion">Discussion</h4>
798d6e29
MS
3763 <p class="discussion">Currently only <code>HTTP_FIELD_ACCEPT_ENCODING</code>, <code>HTTP_FIELD_SERVER</code>,
3764and <code>HTTP_FIELD_USER_AGENT</code> can be set.
3765
3766</p>
98d88c8d
MS
3767<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpSetExpect">httpSetExpect</a></h3>
3768 <p class="description">Set the Expect: header in a request.</p>
798d6e29 3769<p class="code">
98d88c8d 3770void httpSetExpect(<a href="#http_t">http_t</a> *http, http_status_t expect);</p>
798d6e29 3771<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3772<table class="list"><tbody>
3773<tr><th>http</th>
3774 <td class="description">HTTP connection</td></tr>
3775<tr><th>expect</th>
3776 <td class="description">HTTP status to expect
3777(<code>HTTP_STATUS_CONTINUE</code>)</td></tr>
3778</tbody></table>
3779<h4 class="discussion">Discussion</h4>
798d6e29
MS
3780 <p class="discussion">Currently only <code>HTTP_STATUS_CONTINUE</code> is supported for the &quot;expect&quot;
3781argument.
3782
3783</p>
3784<h3 class="function"><a id="httpSetField">httpSetField</a></h3>
53af7f21 3785 <p class="description">Set the value of an HTTP header.</p>
798d6e29 3786<p class="code">
98d88c8d
MS
3787void httpSetField(<a href="#http_t">http_t</a> *http, <a href="#http_field_t">http_field_t</a> field, const char *value);</p>
3788<h4 class="parameters">Parameters</h4>
3789<table class="list"><tbody>
3790<tr><th>http</th>
3791 <td class="description">HTTP connection</td></tr>
3792<tr><th>field</th>
3793 <td class="description">Field index</td></tr>
3794<tr><th>value</th>
3795 <td class="description">Value</td></tr>
3796</tbody></table>
3797<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpSetKeepAlive">httpSetKeepAlive</a></h3>
53af7f21 3798 <p class="description">Set the current Keep-Alive state of a connection.</p>
98d88c8d
MS
3799<p class="code">
3800void httpSetKeepAlive(<a href="#http_t">http_t</a> *http, <a href="#http_keepalive_t">http_keepalive_t</a> keep_alive);</p>
3801<h4 class="parameters">Parameters</h4>
3802<table class="list"><tbody>
3803<tr><th>http</th>
3804 <td class="description">HTTP connection</td></tr>
3805<tr><th>keep_alive</th>
3806 <td class="description">New Keep-Alive value</td></tr>
3807</tbody></table>
3808<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpSetLength">httpSetLength</a></h3>
53af7f21 3809 <p class="description">Set the content-length and content-encoding.</p>
98d88c8d
MS
3810<p class="code">
3811void httpSetLength(<a href="#http_t">http_t</a> *http, size_t length);</p>
3812<h4 class="parameters">Parameters</h4>
3813<table class="list"><tbody>
3814<tr><th>http</th>
3815 <td class="description">HTTP connection</td></tr>
3816<tr><th>length</th>
3817 <td class="description">Length (0 for chunked)</td></tr>
3818</tbody></table>
3819<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="httpSetTimeout">httpSetTimeout</a></h3>
53af7f21 3820 <p class="description">Set read/write timeouts and an optional callback.</p>
98d88c8d
MS
3821<p class="code">
3822void httpSetTimeout(<a href="#http_t">http_t</a> *http, double timeout, <a href="#http_timeout_cb_t">http_timeout_cb_t</a> cb, void *user_data);</p>
3823<h4 class="parameters">Parameters</h4>
3824<table class="list"><tbody>
3825<tr><th>http</th>
3826 <td class="description">HTTP connection</td></tr>
3827<tr><th>timeout</th>
3828 <td class="description">Number of seconds for timeout,
3829must be greater than 0</td></tr>
3830<tr><th>cb</th>
65bebeac 3831 <td class="description">Callback function or <code>NULL</code></td></tr>
98d88c8d
MS
3832<tr><th>user_data</th>
3833 <td class="description">User data pointer</td></tr>
3834</tbody></table>
3835<h4 class="discussion">Discussion</h4>
798d6e29
MS
3836 <p class="discussion">The optional timeout callback receives both the HTTP connection and a user
3837data pointer and must return 1 to continue or 0 to error (time) out.
3838
3839</p>
98d88c8d
MS
3840<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpShutdown">httpShutdown</a></h3>
3841 <p class="description">Shutdown one side of an HTTP connection.</p>
798d6e29 3842<p class="code">
98d88c8d 3843void httpShutdown(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3844<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3845<table class="list"><tbody>
3846<tr><th>http</th>
3847 <td class="description">HTTP connection</td></tr>
3848</tbody></table>
798d6e29
MS
3849<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpStateString">httpStateString</a></h3>
3850 <p class="description">Return the string describing a HTTP state value.</p>
3851<p class="code">
98d88c8d 3852const char *httpStateString(<a href="#http_state_t">http_state_t</a> state);</p>
798d6e29 3853<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3854<table class="list"><tbody>
3855<tr><th>state</th>
3856 <td class="description">HTTP state value</td></tr>
3857</tbody></table>
798d6e29
MS
3858<h4 class="returnvalue">Return Value</h4>
3859 <p class="description">State string</p>
3860<h3 class="function"><a id="httpStatus">httpStatus</a></h3>
3861 <p class="description">Return a short string describing a HTTP status code.</p>
3862<p class="code">
98d88c8d 3863const char *httpStatus(http_status_t status);</p>
798d6e29 3864<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3865<table class="list"><tbody>
3866<tr><th>status</th>
3867 <td class="description">HTTP status code</td></tr>
3868</tbody></table>
798d6e29
MS
3869<h4 class="returnvalue">Return Value</h4>
3870 <p class="description">Localized status string</p>
3871<h4 class="discussion">Discussion</h4>
3872 <p class="discussion">The returned string is localized to the current POSIX locale and is based
65bebeac 3873on the status strings defined in RFC 7231.</p>
798d6e29
MS
3874<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpURIStatusString">httpURIStatusString</a></h3>
3875 <p class="description">Return a string describing a URI status code.</p>
3876<p class="code">
98d88c8d 3877const char *httpURIStatusString(<a href="#http_uri_status_t">http_uri_status_t</a> status);</p>
798d6e29 3878<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3879<table class="list"><tbody>
3880<tr><th>status</th>
3881 <td class="description">URI status code</td></tr>
3882</tbody></table>
798d6e29
MS
3883<h4 class="returnvalue">Return Value</h4>
3884 <p class="description">Localized status string</p>
3885<h3 class="function"><a id="httpUpdate">httpUpdate</a></h3>
3886 <p class="description">Update the current HTTP state for incoming data.</p>
3887<p class="code">
98d88c8d 3888http_status_t httpUpdate(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3889<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3890<table class="list"><tbody>
3891<tr><th>http</th>
3892 <td class="description">HTTP connection</td></tr>
3893</tbody></table>
798d6e29
MS
3894<h4 class="returnvalue">Return Value</h4>
3895 <p class="description">HTTP status</p>
3896<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="httpWait">httpWait</a></h3>
3897 <p class="description">Wait for data available on a connection.</p>
3898<p class="code">
98d88c8d 3899int httpWait(<a href="#http_t">http_t</a> *http, int msec);</p>
798d6e29 3900<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3901<table class="list"><tbody>
3902<tr><th>http</th>
3903 <td class="description">HTTP connection</td></tr>
3904<tr><th>msec</th>
3905 <td class="description">Milliseconds to wait</td></tr>
3906</tbody></table>
798d6e29
MS
3907<h4 class="returnvalue">Return Value</h4>
3908 <p class="description">1 if data is available, 0 otherwise</p>
798d6e29
MS
3909<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpWrite2">httpWrite2</a></h3>
3910 <p class="description">Write data to a HTTP connection.</p>
3911<p class="code">
98d88c8d
MS
3912ssize_t httpWrite2(<a href="#http_t">http_t</a> *http, const char *buffer, size_t length);</p>
3913<h4 class="parameters">Parameters</h4>
3914<table class="list"><tbody>
3915<tr><th>http</th>
3916 <td class="description">HTTP connection</td></tr>
3917<tr><th>buffer</th>
3918 <td class="description">Buffer for data</td></tr>
3919<tr><th>length</th>
3920 <td class="description">Number of bytes to write</td></tr>
3921</tbody></table>
798d6e29
MS
3922<h4 class="returnvalue">Return Value</h4>
3923 <p class="description">Number of bytes written</p>
3924<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpWriteResponse">httpWriteResponse</a></h3>
3925 <p class="description">Write a HTTP response to a client connection.</p>
3926<p class="code">
98d88c8d 3927int httpWriteResponse(<a href="#http_t">http_t</a> *http, http_status_t status);</p>
798d6e29 3928<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3929<table class="list"><tbody>
3930<tr><th>http</th>
3931 <td class="description">HTTP connection</td></tr>
3932<tr><th>status</th>
3933 <td class="description">Status code</td></tr>
3934</tbody></table>
798d6e29
MS
3935<h4 class="returnvalue">Return Value</h4>
3936 <p class="description">0 on success, -1 on error</p>
3937<h3 class="function"><a id="ippAddBoolean">ippAddBoolean</a></h3>
3938 <p class="description">Add a boolean attribute to an IPP message.</p>
3939<p class="code">
98d88c8d
MS
3940<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddBoolean(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, const char *name, char value);</p>
3941<h4 class="parameters">Parameters</h4>
3942<table class="list"><tbody>
3943<tr><th>ipp</th>
3944 <td class="description">IPP message</td></tr>
3945<tr><th>group</th>
3946 <td class="description">IPP group</td></tr>
3947<tr><th>name</th>
3948 <td class="description">Name of attribute</td></tr>
3949<tr><th>value</th>
3950 <td class="description">Value of attribute</td></tr>
3951</tbody></table>
798d6e29
MS
3952<h4 class="returnvalue">Return Value</h4>
3953 <p class="description">New attribute</p>
3954<h4 class="discussion">Discussion</h4>
3955 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
3956the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
3957<br>
3958The <code>group</code> parameter specifies the IPP attribute group tag: none
3959(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
3960event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
3961(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
3962(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
3963<h3 class="function"><a id="ippAddBooleans">ippAddBooleans</a></h3>
3964 <p class="description">Add an array of boolean values.</p>
3965<p class="code">
98d88c8d
MS
3966<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddBooleans(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, const char *name, int num_values, const char *values);</p>
3967<h4 class="parameters">Parameters</h4>
3968<table class="list"><tbody>
3969<tr><th>ipp</th>
3970 <td class="description">IPP message</td></tr>
3971<tr><th>group</th>
3972 <td class="description">IPP group</td></tr>
3973<tr><th>name</th>
3974 <td class="description">Name of attribute</td></tr>
3975<tr><th>num_values</th>
3976 <td class="description">Number of values</td></tr>
3977<tr><th>values</th>
3978 <td class="description">Values</td></tr>
3979</tbody></table>
798d6e29
MS
3980<h4 class="returnvalue">Return Value</h4>
3981 <p class="description">New attribute</p>
3982<h4 class="discussion">Discussion</h4>
3983 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
3984the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
3985<br>
3986The <code>group</code> parameter specifies the IPP attribute group tag: none
3987(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
3988event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
3989(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
3990(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
3991<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="ippAddCollection">ippAddCollection</a></h3>
3992 <p class="description">Add a collection value.</p>
3993<p class="code">
98d88c8d
MS
3994<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddCollection(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, const char *name, <a href="#ipp_t">ipp_t</a> *value);</p>
3995<h4 class="parameters">Parameters</h4>
3996<table class="list"><tbody>
3997<tr><th>ipp</th>
3998 <td class="description">IPP message</td></tr>
3999<tr><th>group</th>
4000 <td class="description">IPP group</td></tr>
4001<tr><th>name</th>
4002 <td class="description">Name of attribute</td></tr>
4003<tr><th>value</th>
4004 <td class="description">Value</td></tr>
4005</tbody></table>
798d6e29
MS
4006<h4 class="returnvalue">Return Value</h4>
4007 <p class="description">New attribute</p>
4008<h4 class="discussion">Discussion</h4>
4009 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4010the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4011<br>
4012The <code>group</code> parameter specifies the IPP attribute group tag: none
4013(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4014event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4015(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4016(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).
4017
4018</p>
4019<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="ippAddCollections">ippAddCollections</a></h3>
4020 <p class="description">Add an array of collection values.</p>
4021<p class="code">
98d88c8d
MS
4022<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddCollections(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, const char *name, int num_values, const <a href="#ipp_t">ipp_t</a> **values);</p>
4023<h4 class="parameters">Parameters</h4>
4024<table class="list"><tbody>
4025<tr><th>ipp</th>
4026 <td class="description">IPP message</td></tr>
4027<tr><th>group</th>
4028 <td class="description">IPP group</td></tr>
4029<tr><th>name</th>
4030 <td class="description">Name of attribute</td></tr>
4031<tr><th>num_values</th>
4032 <td class="description">Number of values</td></tr>
4033<tr><th>values</th>
4034 <td class="description">Values</td></tr>
4035</tbody></table>
798d6e29
MS
4036<h4 class="returnvalue">Return Value</h4>
4037 <p class="description">New attribute</p>
4038<h4 class="discussion">Discussion</h4>
4039 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4040the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4041<br>
4042The <code>group</code> parameter specifies the IPP attribute group tag: none
4043(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4044event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4045(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4046(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).
4047
4048</p>
4049<h3 class="function"><a id="ippAddDate">ippAddDate</a></h3>
65bebeac 4050 <p class="description">Add a dateTime attribute to an IPP message.</p>
798d6e29 4051<p class="code">
98d88c8d
MS
4052<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddDate(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, const char *name, const <a href="#ipp_uchar_t">ipp_uchar_t</a> *value);</p>
4053<h4 class="parameters">Parameters</h4>
4054<table class="list"><tbody>
4055<tr><th>ipp</th>
4056 <td class="description">IPP message</td></tr>
4057<tr><th>group</th>
4058 <td class="description">IPP group</td></tr>
4059<tr><th>name</th>
4060 <td class="description">Name of attribute</td></tr>
4061<tr><th>value</th>
4062 <td class="description">Value</td></tr>
4063</tbody></table>
798d6e29
MS
4064<h4 class="returnvalue">Return Value</h4>
4065 <p class="description">New attribute</p>
4066<h4 class="discussion">Discussion</h4>
4067 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4068the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4069<br>
4070The <code>group</code> parameter specifies the IPP attribute group tag: none
4071(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4072event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4073(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4074(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
4075<h3 class="function"><a id="ippAddInteger">ippAddInteger</a></h3>
4076 <p class="description">Add a integer attribute to an IPP message.</p>
4077<p class="code">
98d88c8d
MS
4078<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddInteger(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, ipp_tag_t value_tag, const char *name, int value);</p>
4079<h4 class="parameters">Parameters</h4>
4080<table class="list"><tbody>
4081<tr><th>ipp</th>
4082 <td class="description">IPP message</td></tr>
4083<tr><th>group</th>
4084 <td class="description">IPP group</td></tr>
4085<tr><th>value_tag</th>
4086 <td class="description">Type of attribute</td></tr>
4087<tr><th>name</th>
4088 <td class="description">Name of attribute</td></tr>
4089<tr><th>value</th>
4090 <td class="description">Value of attribute</td></tr>
4091</tbody></table>
798d6e29
MS
4092<h4 class="returnvalue">Return Value</h4>
4093 <p class="description">New attribute</p>
4094<h4 class="discussion">Discussion</h4>
4095 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4096the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4097<br>
4098The <code>group</code> parameter specifies the IPP attribute group tag: none
4099(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4100event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4101(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4102(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4103<br>
4104Supported values include enum (<code>IPP_TAG_ENUM</code>) and integer
4105(<code>IPP_TAG_INTEGER</code>).</p>
4106<h3 class="function"><a id="ippAddIntegers">ippAddIntegers</a></h3>
4107 <p class="description">Add an array of integer values.</p>
4108<p class="code">
98d88c8d
MS
4109<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddIntegers(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, ipp_tag_t value_tag, const char *name, int num_values, const int *values);</p>
4110<h4 class="parameters">Parameters</h4>
4111<table class="list"><tbody>
4112<tr><th>ipp</th>
4113 <td class="description">IPP message</td></tr>
4114<tr><th>group</th>
4115 <td class="description">IPP group</td></tr>
4116<tr><th>value_tag</th>
4117 <td class="description">Type of attribute</td></tr>
4118<tr><th>name</th>
4119 <td class="description">Name of attribute</td></tr>
4120<tr><th>num_values</th>
4121 <td class="description">Number of values</td></tr>
4122<tr><th>values</th>
4123 <td class="description">Values</td></tr>
4124</tbody></table>
798d6e29
MS
4125<h4 class="returnvalue">Return Value</h4>
4126 <p class="description">New attribute</p>
4127<h4 class="discussion">Discussion</h4>
4128 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4129the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4130<br>
4131The <code>group</code> parameter specifies the IPP attribute group tag: none
4132(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4133event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4134(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4135(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4136<br>
4137Supported values include enum (<code>IPP_TAG_ENUM</code>) and integer
4138(<code>IPP_TAG_INTEGER</code>).</p>
4139<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippAddOctetString">ippAddOctetString</a></h3>
4140 <p class="description">Add an octetString value to an IPP message.</p>
4141<p class="code">
98d88c8d
MS
4142<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddOctetString(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, const char *name, const void *data, int datalen);</p>
4143<h4 class="parameters">Parameters</h4>
4144<table class="list"><tbody>
4145<tr><th>ipp</th>
4146 <td class="description">IPP message</td></tr>
4147<tr><th>group</th>
4148 <td class="description">IPP group</td></tr>
4149<tr><th>name</th>
4150 <td class="description">Name of attribute</td></tr>
4151<tr><th>data</th>
4152 <td class="description">octetString data</td></tr>
4153<tr><th>datalen</th>
4154 <td class="description">Length of data in bytes</td></tr>
4155</tbody></table>
798d6e29
MS
4156<h4 class="returnvalue">Return Value</h4>
4157 <p class="description">New attribute</p>
4158<h4 class="discussion">Discussion</h4>
4159 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4160the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4161<br>
4162The <code>group</code> parameter specifies the IPP attribute group tag: none
4163(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4164event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4165(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4166(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).
4167
4168</p>
4169<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippAddOutOfBand">ippAddOutOfBand</a></h3>
4170 <p class="description">Add an out-of-band value to an IPP message.</p>
4171<p class="code">
98d88c8d
MS
4172<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddOutOfBand(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, ipp_tag_t value_tag, const char *name);</p>
4173<h4 class="parameters">Parameters</h4>
4174<table class="list"><tbody>
4175<tr><th>ipp</th>
4176 <td class="description">IPP message</td></tr>
4177<tr><th>group</th>
4178 <td class="description">IPP group</td></tr>
4179<tr><th>value_tag</th>
4180 <td class="description">Type of attribute</td></tr>
4181<tr><th>name</th>
4182 <td class="description">Name of attribute</td></tr>
4183</tbody></table>
798d6e29
MS
4184<h4 class="returnvalue">Return Value</h4>
4185 <p class="description">New attribute</p>
4186<h4 class="discussion">Discussion</h4>
4187 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4188the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4189<br>
4190The <code>group</code> parameter specifies the IPP attribute group tag: none
4191(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4192event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4193(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4194(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4195<br>
4196Supported out-of-band values include unsupported-value
4197(<code>IPP_TAG_UNSUPPORTED_VALUE</code>), default (<code>IPP_TAG_DEFAULT</code>), unknown
4198(<code>IPP_TAG_UNKNOWN</code>), no-value (<code>IPP_TAG_NOVALUE</code>), not-settable
4199(<code>IPP_TAG_NOTSETTABLE</code>), delete-attribute (<code>IPP_TAG_DELETEATTR</code>), and
4200admin-define (<code>IPP_TAG_ADMINDEFINE</code>).
4201
4202</p>
4203<h3 class="function"><a id="ippAddRange">ippAddRange</a></h3>
4204 <p class="description">Add a range of values to an IPP message.</p>
4205<p class="code">
98d88c8d
MS
4206<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddRange(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, const char *name, int lower, int upper);</p>
4207<h4 class="parameters">Parameters</h4>
4208<table class="list"><tbody>
4209<tr><th>ipp</th>
4210 <td class="description">IPP message</td></tr>
4211<tr><th>group</th>
4212 <td class="description">IPP group</td></tr>
4213<tr><th>name</th>
4214 <td class="description">Name of attribute</td></tr>
4215<tr><th>lower</th>
4216 <td class="description">Lower value</td></tr>
4217<tr><th>upper</th>
4218 <td class="description">Upper value</td></tr>
4219</tbody></table>
798d6e29
MS
4220<h4 class="returnvalue">Return Value</h4>
4221 <p class="description">New attribute</p>
4222<h4 class="discussion">Discussion</h4>
4223 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4224the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4225<br>
4226The <code>group</code> parameter specifies the IPP attribute group tag: none
4227(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4228event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4229(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4230(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4231<br>
4232The <code>lower</code> parameter must be less than or equal to the <code>upper</code> parameter.</p>
4233<h3 class="function"><a id="ippAddRanges">ippAddRanges</a></h3>
4234 <p class="description">Add ranges of values to an IPP message.</p>
4235<p class="code">
98d88c8d
MS
4236<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddRanges(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, const char *name, int num_values, const int *lower, const int *upper);</p>
4237<h4 class="parameters">Parameters</h4>
4238<table class="list"><tbody>
4239<tr><th>ipp</th>
4240 <td class="description">IPP message</td></tr>
4241<tr><th>group</th>
4242 <td class="description">IPP group</td></tr>
4243<tr><th>name</th>
4244 <td class="description">Name of attribute</td></tr>
4245<tr><th>num_values</th>
4246 <td class="description">Number of values</td></tr>
4247<tr><th>lower</th>
4248 <td class="description">Lower values</td></tr>
4249<tr><th>upper</th>
4250 <td class="description">Upper values</td></tr>
4251</tbody></table>
798d6e29
MS
4252<h4 class="returnvalue">Return Value</h4>
4253 <p class="description">New attribute</p>
4254<h4 class="discussion">Discussion</h4>
4255 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4256the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4257<br>
4258The <code>group</code> parameter specifies the IPP attribute group tag: none
4259(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4260event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4261(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4262(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
4263<h3 class="function"><a id="ippAddResolution">ippAddResolution</a></h3>
4264 <p class="description">Add a resolution value to an IPP message.</p>
4265<p class="code">
98d88c8d
MS
4266<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddResolution(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, const char *name, <a href="#ipp_res_t">ipp_res_t</a> units, int xres, int yres);</p>
4267<h4 class="parameters">Parameters</h4>
4268<table class="list"><tbody>
4269<tr><th>ipp</th>
4270 <td class="description">IPP message</td></tr>
4271<tr><th>group</th>
4272 <td class="description">IPP group</td></tr>
4273<tr><th>name</th>
4274 <td class="description">Name of attribute</td></tr>
4275<tr><th>units</th>
4276 <td class="description">Units for resolution</td></tr>
4277<tr><th>xres</th>
4278 <td class="description">X resolution</td></tr>
4279<tr><th>yres</th>
4280 <td class="description">Y resolution</td></tr>
4281</tbody></table>
798d6e29
MS
4282<h4 class="returnvalue">Return Value</h4>
4283 <p class="description">New attribute</p>
4284<h4 class="discussion">Discussion</h4>
4285 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4286the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4287<br>
4288The <code>group</code> parameter specifies the IPP attribute group tag: none
4289(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4290event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4291(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4292(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
4293<h3 class="function"><a id="ippAddResolutions">ippAddResolutions</a></h3>
4294 <p class="description">Add resolution values to an IPP message.</p>
4295<p class="code">
98d88c8d
MS
4296<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddResolutions(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, const char *name, int num_values, <a href="#ipp_res_t">ipp_res_t</a> units, const int *xres, const int *yres);</p>
4297<h4 class="parameters">Parameters</h4>
4298<table class="list"><tbody>
4299<tr><th>ipp</th>
4300 <td class="description">IPP message</td></tr>
4301<tr><th>group</th>
4302 <td class="description">IPP group</td></tr>
4303<tr><th>name</th>
4304 <td class="description">Name of attribute</td></tr>
4305<tr><th>num_values</th>
4306 <td class="description">Number of values</td></tr>
4307<tr><th>units</th>
4308 <td class="description">Units for resolution</td></tr>
4309<tr><th>xres</th>
4310 <td class="description">X resolutions</td></tr>
4311<tr><th>yres</th>
4312 <td class="description">Y resolutions</td></tr>
4313</tbody></table>
798d6e29
MS
4314<h4 class="returnvalue">Return Value</h4>
4315 <p class="description">New attribute</p>
4316<h4 class="discussion">Discussion</h4>
4317 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4318the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4319<br>
4320The <code>group</code> parameter specifies the IPP attribute group tag: none
4321(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4322event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4323(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4324(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
4325<h3 class="function"><a id="ippAddSeparator">ippAddSeparator</a></h3>
4326 <p class="description">Add a group separator to an IPP message.</p>
4327<p class="code">
98d88c8d 4328<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddSeparator(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 4329<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4330<table class="list"><tbody>
4331<tr><th>ipp</th>
4332 <td class="description">IPP message</td></tr>
4333</tbody></table>
798d6e29
MS
4334<h4 class="returnvalue">Return Value</h4>
4335 <p class="description">New attribute</p>
4336<h4 class="discussion">Discussion</h4>
4337 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4338the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.</p>
4339<h3 class="function"><a id="ippAddString">ippAddString</a></h3>
4340 <p class="description">Add a language-encoded string to an IPP message.</p>
4341<p class="code">
98d88c8d
MS
4342<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddString(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, ipp_tag_t value_tag, const char *name, const char *language, const char *value);</p>
4343<h4 class="parameters">Parameters</h4>
4344<table class="list"><tbody>
4345<tr><th>ipp</th>
4346 <td class="description">IPP message</td></tr>
4347<tr><th>group</th>
4348 <td class="description">IPP group</td></tr>
4349<tr><th>value_tag</th>
4350 <td class="description">Type of attribute</td></tr>
4351<tr><th>name</th>
4352 <td class="description">Name of attribute</td></tr>
4353<tr><th>language</th>
4354 <td class="description">Language code</td></tr>
4355<tr><th>value</th>
4356 <td class="description">Value</td></tr>
4357</tbody></table>
798d6e29
MS
4358<h4 class="returnvalue">Return Value</h4>
4359 <p class="description">New attribute</p>
4360<h4 class="discussion">Discussion</h4>
4361 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4362the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4363<br>
4364The <code>group</code> parameter specifies the IPP attribute group tag: none
4365(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4366event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4367(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4368(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4369<br>
4370Supported string values include charset (<code>IPP_TAG_CHARSET</code>), keyword
4371(<code>IPP_TAG_KEYWORD</code>), language (<code>IPP_TAG_LANGUAGE</code>), mimeMediaType
4372(<code>IPP_TAG_MIMETYPE</code>), name (<code>IPP_TAG_NAME</code>), nameWithLanguage
4373(<code>IPP_TAG_NAMELANG), text (</code>code IPP_TAG_TEXT@), textWithLanguage
4374(<code>IPP_TAG_TEXTLANG</code>), uri (<code>IPP_TAG_URI</code>), and uriScheme
4375(<code>IPP_TAG_URISCHEME</code>).<br>
4376<br>
4377The <code>language</code> parameter must be non-<code>NULL</code> for nameWithLanguage and
4378textWithLanguage string values and must be <code>NULL</code> for all other string values.</p>
4379<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippAddStringf">ippAddStringf</a></h3>
4380 <p class="description">Add a formatted string to an IPP message.</p>
4381<p class="code">
98d88c8d
MS
4382<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddStringf(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, ipp_tag_t value_tag, const char *name, const char *language, const char *format, ...);</p>
4383<h4 class="parameters">Parameters</h4>
4384<table class="list"><tbody>
4385<tr><th>ipp</th>
4386 <td class="description">IPP message</td></tr>
4387<tr><th>group</th>
4388 <td class="description">IPP group</td></tr>
4389<tr><th>value_tag</th>
4390 <td class="description">Type of attribute</td></tr>
4391<tr><th>name</th>
4392 <td class="description">Name of attribute</td></tr>
4393<tr><th>language</th>
4394 <td class="description">Language code (<code>NULL</code> for default)</td></tr>
4395<tr><th>format</th>
4396 <td class="description">Printf-style format string</td></tr>
4397<tr><th>...</th>
4398 <td class="description">Additional arguments as needed</td></tr>
4399</tbody></table>
798d6e29
MS
4400<h4 class="returnvalue">Return Value</h4>
4401 <p class="description">New attribute</p>
4402<h4 class="discussion">Discussion</h4>
4403 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4404the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4405<br>
4406The <code>group</code> parameter specifies the IPP attribute group tag: none
4407(<code>IPP_TAG_ZERO</code>, for member attributes), document
4408(<code>IPP_TAG_DOCUMENT</code>), event notification
4409(<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation (<code>IPP_TAG_OPERATION</code>),
4410printer (<code>IPP_TAG_PRINTER</code>), subscription (<code>IPP_TAG_SUBSCRIPTION</code>),
4411or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4412<br>
4413Supported string values include charset (<code>IPP_TAG_CHARSET</code>), keyword
4414(<code>IPP_TAG_KEYWORD</code>), language (<code>IPP_TAG_LANGUAGE</code>), mimeMediaType
4415(<code>IPP_TAG_MIMETYPE</code>), name (<code>IPP_TAG_NAME</code>), nameWithLanguage
4416(<code>IPP_TAG_NAMELANG), text (</code>code IPP_TAG_TEXT@), textWithLanguage
4417(<code>IPP_TAG_TEXTLANG</code>), uri (<code>IPP_TAG_URI</code>), and uriScheme
4418(<code>IPP_TAG_URISCHEME</code>).<br>
4419<br>
4420The <code>language</code> parameter must be non-<code>NULL</code> for nameWithLanguage
4421and textWithLanguage string values and must be <code>NULL</code> for all other
4422string values.<br>
4423<br>
4424The <code>format</code> parameter uses formatting characters compatible with the
4425printf family of standard functions. Additional arguments follow it as
4426needed. The formatted string is truncated as needed to the maximum length of
4427the corresponding value type.
4428
4429</p>
4430<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippAddStringfv">ippAddStringfv</a></h3>
4431 <p class="description">Add a formatted string to an IPP message.</p>
4432<p class="code">
98d88c8d
MS
4433<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddStringfv(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, ipp_tag_t value_tag, const char *name, const char *language, const char *format, va_list ap);</p>
4434<h4 class="parameters">Parameters</h4>
4435<table class="list"><tbody>
4436<tr><th>ipp</th>
4437 <td class="description">IPP message</td></tr>
4438<tr><th>group</th>
4439 <td class="description">IPP group</td></tr>
4440<tr><th>value_tag</th>
4441 <td class="description">Type of attribute</td></tr>
4442<tr><th>name</th>
4443 <td class="description">Name of attribute</td></tr>
4444<tr><th>language</th>
4445 <td class="description">Language code (<code>NULL</code> for default)</td></tr>
4446<tr><th>format</th>
4447 <td class="description">Printf-style format string</td></tr>
4448<tr><th>ap</th>
4449 <td class="description">Additional arguments</td></tr>
4450</tbody></table>
798d6e29
MS
4451<h4 class="returnvalue">Return Value</h4>
4452 <p class="description">New attribute</p>
4453<h4 class="discussion">Discussion</h4>
4454 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4455the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4456<br>
4457The <code>group</code> parameter specifies the IPP attribute group tag: none
4458(<code>IPP_TAG_ZERO</code>, for member attributes), document
4459(<code>IPP_TAG_DOCUMENT</code>), event notification
4460(<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation (<code>IPP_TAG_OPERATION</code>),
4461printer (<code>IPP_TAG_PRINTER</code>), subscription (<code>IPP_TAG_SUBSCRIPTION</code>),
4462or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4463<br>
4464Supported string values include charset (<code>IPP_TAG_CHARSET</code>), keyword
4465(<code>IPP_TAG_KEYWORD</code>), language (<code>IPP_TAG_LANGUAGE</code>), mimeMediaType
4466(<code>IPP_TAG_MIMETYPE</code>), name (<code>IPP_TAG_NAME</code>), nameWithLanguage
4467(<code>IPP_TAG_NAMELANG), text (</code>code IPP_TAG_TEXT@), textWithLanguage
4468(<code>IPP_TAG_TEXTLANG</code>), uri (<code>IPP_TAG_URI</code>), and uriScheme
4469(<code>IPP_TAG_URISCHEME</code>).<br>
4470<br>
4471The <code>language</code> parameter must be non-<code>NULL</code> for nameWithLanguage
4472and textWithLanguage string values and must be <code>NULL</code> for all other
4473string values.<br>
4474<br>
4475The <code>format</code> parameter uses formatting characters compatible with the
4476printf family of standard functions. Additional arguments are passed in the
4477stdarg pointer <code>ap</code>. The formatted string is truncated as needed to the
4478maximum length of the corresponding value type.
4479
4480</p>
4481<h3 class="function"><a id="ippAddStrings">ippAddStrings</a></h3>
4482 <p class="description">Add language-encoded strings to an IPP message.</p>
4483<p class="code">
98d88c8d
MS
4484<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddStrings(<a href="#ipp_t">ipp_t</a> *ipp, ipp_tag_t group, ipp_tag_t value_tag, const char *name, int num_values, const char *language, const char *const *values);</p>
4485<h4 class="parameters">Parameters</h4>
4486<table class="list"><tbody>
4487<tr><th>ipp</th>
4488 <td class="description">IPP message</td></tr>
4489<tr><th>group</th>
4490 <td class="description">IPP group</td></tr>
4491<tr><th>value_tag</th>
4492 <td class="description">Type of attribute</td></tr>
4493<tr><th>name</th>
4494 <td class="description">Name of attribute</td></tr>
4495<tr><th>num_values</th>
4496 <td class="description">Number of values</td></tr>
4497<tr><th>language</th>
4498 <td class="description">Language code (<code>NULL</code> for default)</td></tr>
4499<tr><th>values</th>
4500 <td class="description">Values</td></tr>
4501</tbody></table>
798d6e29
MS
4502<h4 class="returnvalue">Return Value</h4>
4503 <p class="description">New attribute</p>
4504<h4 class="discussion">Discussion</h4>
4505 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4506the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4507<br>
4508The <code>group</code> parameter specifies the IPP attribute group tag: none
4509(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4510event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4511(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4512(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4513<br>
4514Supported string values include charset (<code>IPP_TAG_CHARSET</code>), keyword
4515(<code>IPP_TAG_KEYWORD</code>), language (<code>IPP_TAG_LANGUAGE</code>), mimeMediaType
4516(<code>IPP_TAG_MIMETYPE</code>), name (<code>IPP_TAG_NAME</code>), nameWithLanguage
4517(<code>IPP_TAG_NAMELANG), text (</code>code IPP_TAG_TEXT@), textWithLanguage
4518(<code>IPP_TAG_TEXTLANG</code>), uri (<code>IPP_TAG_URI</code>), and uriScheme
4519(<code>IPP_TAG_URISCHEME</code>).<br>
4520<br>
4521The <code>language</code> parameter must be non-<code>NULL</code> for nameWithLanguage and
4522textWithLanguage string values and must be <code>NULL</code> for all other string values.</p>
4523<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippAttributeString">ippAttributeString</a></h3>
4524 <p class="description">Convert the attribute's value to a string.</p>
4525<p class="code">
98d88c8d
MS
4526size_t ippAttributeString(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, char *buffer, size_t bufsize);</p>
4527<h4 class="parameters">Parameters</h4>
4528<table class="list"><tbody>
4529<tr><th>attr</th>
4530 <td class="description">Attribute</td></tr>
4531<tr><th>buffer</th>
4532 <td class="description">String buffer or NULL</td></tr>
4533<tr><th>bufsize</th>
4534 <td class="description">Size of string buffer</td></tr>
4535</tbody></table>
798d6e29
MS
4536<h4 class="returnvalue">Return Value</h4>
4537 <p class="description">Number of bytes less nul</p>
4538<h4 class="discussion">Discussion</h4>
4539 <p class="discussion">Returns the number of bytes that would be written, not including the
4540trailing nul. The buffer pointer can be NULL to get the required length,
4541just like (v)snprintf.
4542
4543</p>
4544<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippContainsInteger">ippContainsInteger</a></h3>
4545 <p class="description">Determine whether an attribute contains the
4546specified value or is within the list of ranges.</p>
4547<p class="code">
98d88c8d 4548int ippContainsInteger(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int value);</p>
798d6e29 4549<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4550<table class="list"><tbody>
4551<tr><th>attr</th>
4552 <td class="description">Attribute</td></tr>
4553<tr><th>value</th>
4554 <td class="description">Integer/enum value</td></tr>
4555</tbody></table>
798d6e29
MS
4556<h4 class="returnvalue">Return Value</h4>
4557 <p class="description">1 on a match, 0 on no match</p>
4558<h4 class="discussion">Discussion</h4>
4559 <p class="discussion">Returns non-zero when the attribute contains either a matching integer or
4560enum value, or the value falls within one of the rangeOfInteger values for
4561the attribute.
4562
4563</p>
4564<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippContainsString">ippContainsString</a></h3>
4565 <p class="description">Determine whether an attribute contains the
4566specified string value.</p>
4567<p class="code">
98d88c8d 4568int ippContainsString(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, const char *value);</p>
798d6e29 4569<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4570<table class="list"><tbody>
4571<tr><th>attr</th>
4572 <td class="description">Attribute</td></tr>
4573<tr><th>value</th>
4574 <td class="description">String value</td></tr>
4575</tbody></table>
798d6e29
MS
4576<h4 class="returnvalue">Return Value</h4>
4577 <p class="description">1 on a match, 0 on no match</p>
4578<h4 class="discussion">Discussion</h4>
4579 <p class="discussion">Returns non-zero when the attribute contains a matching charset, keyword,
65bebeac 4580naturalLanguage, mimeMediaType, name, text, uri, or uriScheme value.
798d6e29
MS
4581
4582</p>
4583<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippCopyAttribute">ippCopyAttribute</a></h3>
4584 <p class="description">Copy an attribute.</p>
4585<p class="code">
98d88c8d
MS
4586<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippCopyAttribute(<a href="#ipp_t">ipp_t</a> *dst, <a href="#ipp_attribute_t">ipp_attribute_t</a> *srcattr, int quickcopy);</p>
4587<h4 class="parameters">Parameters</h4>
4588<table class="list"><tbody>
4589<tr><th>dst</th>
4590 <td class="description">Destination IPP message</td></tr>
4591<tr><th>srcattr</th>
4592 <td class="description">Attribute to copy</td></tr>
4593<tr><th>quickcopy</th>
4594 <td class="description">1 for a referenced copy, 0 for normal</td></tr>
4595</tbody></table>
798d6e29
MS
4596<h4 class="returnvalue">Return Value</h4>
4597 <p class="description">New attribute</p>
4598<h4 class="discussion">Discussion</h4>
4599 <p class="discussion">The specified attribute, <code>attr</code>, is copied to the destination IPP message.
4600When <code>quickcopy</code> is non-zero, a &quot;shallow&quot; reference copy of the attribute is
4601created - this should only be done as long as the original source IPP message will
4602not be freed for the life of the destination.
4603
4604</p>
4605<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippCopyAttributes">ippCopyAttributes</a></h3>
4606 <p class="description">Copy attributes from one IPP message to another.</p>
4607<p class="code">
98d88c8d
MS
4608int ippCopyAttributes(<a href="#ipp_t">ipp_t</a> *dst, <a href="#ipp_t">ipp_t</a> *src, int quickcopy, <a href="#ipp_copycb_t">ipp_copycb_t</a> cb, void *context);</p>
4609<h4 class="parameters">Parameters</h4>
4610<table class="list"><tbody>
4611<tr><th>dst</th>
4612 <td class="description">Destination IPP message</td></tr>
4613<tr><th>src</th>
4614 <td class="description">Source IPP message</td></tr>
4615<tr><th>quickcopy</th>
4616 <td class="description">1 for a referenced copy, 0 for normal</td></tr>
4617<tr><th>cb</th>
4618 <td class="description">Copy callback or <code>NULL</code> for none</td></tr>
4619<tr><th>context</th>
4620 <td class="description">Context pointer</td></tr>
4621</tbody></table>
798d6e29
MS
4622<h4 class="returnvalue">Return Value</h4>
4623 <p class="description">1 on success, 0 on error</p>
4624<h4 class="discussion">Discussion</h4>
4625 <p class="discussion">Zero or more attributes are copied from the source IPP message, <code>src</code>, to the
4626destination IPP message, <code>dst</code>. When <code>quickcopy</code> is non-zero, a &quot;shallow&quot;
4627reference copy of the attribute is created - this should only be done as long as the
4628original source IPP message will not be freed for the life of the destination.<br>
4629<br>
4630The <code>cb</code> and <code>context</code> parameters provide a generic way to &quot;filter&quot; the
4631attributes that are copied - the function must return 1 to copy the attribute or
46320 to skip it. The function may also choose to do a partial copy of the source attribute
4633itself.
4634
4635</p>
4636<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippCreateRequestedArray">ippCreateRequestedArray</a></h3>
4637 <p class="description">Create a CUPS array of attribute names from the
4638given requested-attributes attribute.</p>
4639<p class="code">
98d88c8d 4640cups_array_t *ippCreateRequestedArray(<a href="#ipp_t">ipp_t</a> *request);</p>
798d6e29 4641<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4642<table class="list"><tbody>
4643<tr><th>request</th>
4644 <td class="description">IPP request</td></tr>
4645</tbody></table>
798d6e29
MS
4646<h4 class="returnvalue">Return Value</h4>
4647 <p class="description">CUPS array or <code>NULL</code> if all</p>
4648<h4 class="discussion">Discussion</h4>
4649 <p class="discussion">This function creates a (sorted) CUPS array of attribute names matching the
4650list of &quot;requested-attribute&quot; values supplied in an IPP request. All IANA-
4651registered values are supported in addition to the CUPS IPP extension
4652attributes.<br>
4653<br>
4654The <code>request</code> parameter specifies the request message that was read from
4655the client.
4656
4657<code>NULL</code> is returned if all attributes should be returned. Otherwise, the
4658result is a sorted array of attribute names, where <code>cupsArrayFind(array,
4659"attribute-name")</code> will return a non-NULL pointer. The array must be freed
4660using the <code>cupsArrayDelete</code> function.
4661
4662</p>
4663<h3 class="function"><a id="ippDateToTime">ippDateToTime</a></h3>
65bebeac
MS
4664 <p class="description">Convert from RFC 2579 Date/Time format to time in
4665seconds.</p>
798d6e29 4666<p class="code">
98d88c8d 4667time_t ippDateToTime(const <a href="#ipp_uchar_t">ipp_uchar_t</a> *date);</p>
798d6e29 4668<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4669<table class="list"><tbody>
4670<tr><th>date</th>
65bebeac 4671 <td class="description">RFC 2579 date info</td></tr>
98d88c8d 4672</tbody></table>
798d6e29
MS
4673<h4 class="returnvalue">Return Value</h4>
4674 <p class="description">UNIX time value</p>
4675<h3 class="function"><a id="ippDelete">ippDelete</a></h3>
98d88c8d 4676 <p class="description">Delete an IPP message.</p>
798d6e29 4677<p class="code">
98d88c8d 4678void ippDelete(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 4679<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4680<table class="list"><tbody>
4681<tr><th>ipp</th>
4682 <td class="description">IPP message</td></tr>
4683</tbody></table>
4684<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="ippDeleteAttribute">ippDeleteAttribute</a></h3>
53af7f21 4685 <p class="description">Delete a single attribute in an IPP message.</p>
98d88c8d
MS
4686<p class="code">
4687void ippDeleteAttribute(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
4688<h4 class="parameters">Parameters</h4>
4689<table class="list"><tbody>
4690<tr><th>ipp</th>
4691 <td class="description">IPP message</td></tr>
4692<tr><th>attr</th>
4693 <td class="description">Attribute to delete</td></tr>
4694</tbody></table>
798d6e29
MS
4695<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippDeleteValues">ippDeleteValues</a></h3>
4696 <p class="description">Delete values in an attribute.</p>
4697<p class="code">
98d88c8d
MS
4698int ippDeleteValues(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, int count);</p>
4699<h4 class="parameters">Parameters</h4>
4700<table class="list"><tbody>
4701<tr><th>ipp</th>
4702 <td class="description">IPP message</td></tr>
4703<tr><th>attr</th>
4704 <td class="description">Attribute</td></tr>
4705<tr><th>element</th>
4706 <td class="description">Index of first value to delete (0-based)</td></tr>
4707<tr><th>count</th>
4708 <td class="description">Number of values to delete</td></tr>
4709</tbody></table>
798d6e29
MS
4710<h4 class="returnvalue">Return Value</h4>
4711 <p class="description">1 on success, 0 on failure</p>
4712<h4 class="discussion">Discussion</h4>
4713 <p class="discussion">The <code>element</code> parameter specifies the first value to delete, starting at
47140. It must be less than the number of values returned by <a href="#ippGetCount"><code>ippGetCount</code></a>.<br>
4715<br>
4716The <code>attr</code> parameter may be modified as a result of setting the value.<br>
4717<br>
4718Deleting all values in an attribute deletes the attribute.
4719
4720</p>
4721<h3 class="function"><a id="ippEnumString">ippEnumString</a></h3>
4722 <p class="description">Return a string corresponding to the enum value.</p>
4723<p class="code">
98d88c8d 4724const char *ippEnumString(const char *attrname, int enumvalue);</p>
798d6e29 4725<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4726<table class="list"><tbody>
4727<tr><th>attrname</th>
4728 <td class="description">Attribute name</td></tr>
4729<tr><th>enumvalue</th>
4730 <td class="description">Enum value</td></tr>
4731</tbody></table>
798d6e29
MS
4732<h4 class="returnvalue">Return Value</h4>
4733 <p class="description">Enum string</p>
4734<h3 class="function"><a id="ippEnumValue">ippEnumValue</a></h3>
4735 <p class="description">Return the value associated with a given enum string.</p>
4736<p class="code">
98d88c8d 4737int ippEnumValue(const char *attrname, const char *enumstring);</p>
798d6e29 4738<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4739<table class="list"><tbody>
4740<tr><th>attrname</th>
4741 <td class="description">Attribute name</td></tr>
4742<tr><th>enumstring</th>
4743 <td class="description">Enum string</td></tr>
4744</tbody></table>
798d6e29
MS
4745<h4 class="returnvalue">Return Value</h4>
4746 <p class="description">Enum value or -1 if unknown</p>
4747<h3 class="function"><a id="ippErrorString">ippErrorString</a></h3>
4748 <p class="description">Return a name for the given status code.</p>
4749<p class="code">
98d88c8d 4750const char *ippErrorString(ipp_status_t error);</p>
798d6e29 4751<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4752<table class="list"><tbody>
4753<tr><th>error</th>
4754 <td class="description">Error status</td></tr>
4755</tbody></table>
798d6e29
MS
4756<h4 class="returnvalue">Return Value</h4>
4757 <p class="description">Text string</p>
4758<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippErrorValue">ippErrorValue</a></h3>
4759 <p class="description">Return a status code for the given name.</p>
4760<p class="code">
98d88c8d 4761ipp_status_t ippErrorValue(const char *name);</p>
798d6e29 4762<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4763<table class="list"><tbody>
4764<tr><th>name</th>
4765 <td class="description">Name</td></tr>
4766</tbody></table>
798d6e29
MS
4767<h4 class="returnvalue">Return Value</h4>
4768 <p class="description">IPP status code</p>
4769<h3 class="function"><a id="ippFindAttribute">ippFindAttribute</a></h3>
4770 <p class="description">Find a named attribute in a request.</p>
4771<p class="code">
98d88c8d
MS
4772<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippFindAttribute(<a href="#ipp_t">ipp_t</a> *ipp, const char *name, ipp_tag_t type);</p>
4773<h4 class="parameters">Parameters</h4>
4774<table class="list"><tbody>
4775<tr><th>ipp</th>
4776 <td class="description">IPP message</td></tr>
4777<tr><th>name</th>
4778 <td class="description">Name of attribute</td></tr>
4779<tr><th>type</th>
4780 <td class="description">Type of attribute</td></tr>
4781</tbody></table>
798d6e29
MS
4782<h4 class="returnvalue">Return Value</h4>
4783 <p class="description">Matching attribute</p>
4784<h4 class="discussion">Discussion</h4>
4785 <p class="discussion">Starting with CUPS 2.0, the attribute name can contain a hierarchical list
4786of attribute and member names separated by slashes, for example
4787&quot;media-col/media-size&quot;.</p>
4788<h3 class="function"><a id="ippFindNextAttribute">ippFindNextAttribute</a></h3>
4789 <p class="description">Find the next named attribute in a request.</p>
4790<p class="code">
98d88c8d
MS
4791<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippFindNextAttribute(<a href="#ipp_t">ipp_t</a> *ipp, const char *name, ipp_tag_t type);</p>
4792<h4 class="parameters">Parameters</h4>
4793<table class="list"><tbody>
4794<tr><th>ipp</th>
4795 <td class="description">IPP message</td></tr>
4796<tr><th>name</th>
4797 <td class="description">Name of attribute</td></tr>
4798<tr><th>type</th>
4799 <td class="description">Type of attribute</td></tr>
4800</tbody></table>
798d6e29
MS
4801<h4 class="returnvalue">Return Value</h4>
4802 <p class="description">Matching attribute</p>
4803<h4 class="discussion">Discussion</h4>
4804 <p class="discussion">Starting with CUPS 2.0, the attribute name can contain a hierarchical list
4805of attribute and member names separated by slashes, for example
4806&quot;media-col/media-size&quot;.</p>
4807<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippFirstAttribute">ippFirstAttribute</a></h3>
4808 <p class="description">Return the first attribute in the message.</p>
4809<p class="code">
98d88c8d 4810<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippFirstAttribute(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 4811<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4812<table class="list"><tbody>
4813<tr><th>ipp</th>
4814 <td class="description">IPP message</td></tr>
4815</tbody></table>
798d6e29
MS
4816<h4 class="returnvalue">Return Value</h4>
4817 <p class="description">First attribute or <code>NULL</code> if none</p>
4818<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetBoolean">ippGetBoolean</a></h3>
4819 <p class="description">Get a boolean value for an attribute.</p>
4820<p class="code">
98d88c8d 4821int ippGetBoolean(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element);</p>
798d6e29 4822<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4823<table class="list"><tbody>
4824<tr><th>attr</th>
4825 <td class="description">IPP attribute</td></tr>
4826<tr><th>element</th>
4827 <td class="description">Value number (0-based)</td></tr>
4828</tbody></table>
798d6e29
MS
4829<h4 class="returnvalue">Return Value</h4>
4830 <p class="description">Boolean value or 0 on error</p>
4831<h4 class="discussion">Discussion</h4>
4832 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4833<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4834
4835</p>
4836<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetCollection">ippGetCollection</a></h3>
4837 <p class="description">Get a collection value for an attribute.</p>
4838<p class="code">
98d88c8d 4839<a href="#ipp_t">ipp_t</a> *ippGetCollection(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element);</p>
798d6e29 4840<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4841<table class="list"><tbody>
4842<tr><th>attr</th>
4843 <td class="description">IPP attribute</td></tr>
4844<tr><th>element</th>
4845 <td class="description">Value number (0-based)</td></tr>
4846</tbody></table>
798d6e29
MS
4847<h4 class="returnvalue">Return Value</h4>
4848 <p class="description">Collection value or <code>NULL</code> on error</p>
4849<h4 class="discussion">Discussion</h4>
4850 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4851<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4852
4853</p>
4854<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetCount">ippGetCount</a></h3>
4855 <p class="description">Get the number of values in an attribute.</p>
4856<p class="code">
98d88c8d 4857int ippGetCount(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
798d6e29 4858<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4859<table class="list"><tbody>
4860<tr><th>attr</th>
4861 <td class="description">IPP attribute</td></tr>
4862</tbody></table>
798d6e29
MS
4863<h4 class="returnvalue">Return Value</h4>
4864 <p class="description">Number of values or 0 on error</p>
4865<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetDate">ippGetDate</a></h3>
65bebeac 4866 <p class="description">Get a dateTime value for an attribute.</p>
798d6e29 4867<p class="code">
98d88c8d 4868const <a href="#ipp_uchar_t">ipp_uchar_t</a> *ippGetDate(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element);</p>
798d6e29 4869<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4870<table class="list"><tbody>
4871<tr><th>attr</th>
4872 <td class="description">IPP attribute</td></tr>
4873<tr><th>element</th>
4874 <td class="description">Value number (0-based)</td></tr>
4875</tbody></table>
798d6e29 4876<h4 class="returnvalue">Return Value</h4>
65bebeac 4877 <p class="description">dateTime value or <code>NULL</code></p>
798d6e29
MS
4878<h4 class="discussion">Discussion</h4>
4879 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4880<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4881
4882</p>
4883<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetGroupTag">ippGetGroupTag</a></h3>
4884 <p class="description">Get the group associated with an attribute.</p>
4885<p class="code">
98d88c8d 4886ipp_tag_t ippGetGroupTag(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
798d6e29 4887<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4888<table class="list"><tbody>
4889<tr><th>attr</th>
4890 <td class="description">IPP attribute</td></tr>
4891</tbody></table>
798d6e29
MS
4892<h4 class="returnvalue">Return Value</h4>
4893 <p class="description">Group tag or <code>IPP_TAG_ZERO</code> on error</p>
4894<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetInteger">ippGetInteger</a></h3>
4895 <p class="description">Get the integer/enum value for an attribute.</p>
4896<p class="code">
98d88c8d 4897int ippGetInteger(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element);</p>
798d6e29 4898<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4899<table class="list"><tbody>
4900<tr><th>attr</th>
4901 <td class="description">IPP attribute</td></tr>
4902<tr><th>element</th>
4903 <td class="description">Value number (0-based)</td></tr>
4904</tbody></table>
798d6e29
MS
4905<h4 class="returnvalue">Return Value</h4>
4906 <p class="description">Value or 0 on error</p>
4907<h4 class="discussion">Discussion</h4>
4908 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4909<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4910
4911</p>
4912<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetName">ippGetName</a></h3>
4913 <p class="description">Get the attribute name.</p>
4914<p class="code">
98d88c8d 4915const char *ippGetName(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
798d6e29 4916<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4917<table class="list"><tbody>
4918<tr><th>attr</th>
4919 <td class="description">IPP attribute</td></tr>
4920</tbody></table>
798d6e29
MS
4921<h4 class="returnvalue">Return Value</h4>
4922 <p class="description">Attribute name or <code>NULL</code> for separators</p>
4923<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippGetOctetString">ippGetOctetString</a></h3>
4924 <p class="description">Get an octetString value from an IPP attribute.</p>
4925<p class="code">
98d88c8d
MS
4926void *ippGetOctetString(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element, int *datalen);</p>
4927<h4 class="parameters">Parameters</h4>
4928<table class="list"><tbody>
4929<tr><th>attr</th>
4930 <td class="description">IPP attribute</td></tr>
4931<tr><th>element</th>
4932 <td class="description">Value number (0-based)</td></tr>
4933<tr><th>datalen</th>
4934 <td class="description">Length of octetString data</td></tr>
4935</tbody></table>
798d6e29
MS
4936<h4 class="returnvalue">Return Value</h4>
4937 <p class="description">Pointer to octetString data</p>
4938<h4 class="discussion">Discussion</h4>
4939 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4940<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4941
4942</p>
4943<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetOperation">ippGetOperation</a></h3>
4944 <p class="description">Get the operation ID in an IPP message.</p>
4945<p class="code">
98d88c8d 4946ipp_op_t ippGetOperation(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 4947<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4948<table class="list"><tbody>
4949<tr><th>ipp</th>
4950 <td class="description">IPP request message</td></tr>
4951</tbody></table>
798d6e29
MS
4952<h4 class="returnvalue">Return Value</h4>
4953 <p class="description">Operation ID or 0 on error</p>
4954<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetRange">ippGetRange</a></h3>
4955 <p class="description">Get a rangeOfInteger value from an attribute.</p>
4956<p class="code">
98d88c8d
MS
4957int ippGetRange(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element, int *uppervalue);</p>
4958<h4 class="parameters">Parameters</h4>
4959<table class="list"><tbody>
4960<tr><th>attr</th>
4961 <td class="description">IPP attribute</td></tr>
4962<tr><th>element</th>
4963 <td class="description">Value number (0-based)</td></tr>
4964<tr><th>uppervalue</th>
4965 <td class="description">Upper value of range</td></tr>
4966</tbody></table>
798d6e29
MS
4967<h4 class="returnvalue">Return Value</h4>
4968 <p class="description">Lower value of range or 0</p>
4969<h4 class="discussion">Discussion</h4>
4970 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4971<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4972
4973</p>
4974<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetRequestId">ippGetRequestId</a></h3>
4975 <p class="description">Get the request ID from an IPP message.</p>
4976<p class="code">
98d88c8d 4977int ippGetRequestId(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 4978<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4979<table class="list"><tbody>
4980<tr><th>ipp</th>
4981 <td class="description">IPP message</td></tr>
4982</tbody></table>
798d6e29
MS
4983<h4 class="returnvalue">Return Value</h4>
4984 <p class="description">Request ID or 0 on error</p>
4985<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetResolution">ippGetResolution</a></h3>
4986 <p class="description">Get a resolution value for an attribute.</p>
4987<p class="code">
98d88c8d
MS
4988int ippGetResolution(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element, int *yres, <a href="#ipp_res_t">ipp_res_t</a> *units);</p>
4989<h4 class="parameters">Parameters</h4>
4990<table class="list"><tbody>
4991<tr><th>attr</th>
4992 <td class="description">IPP attribute</td></tr>
4993<tr><th>element</th>
4994 <td class="description">Value number (0-based)</td></tr>
4995<tr><th>yres</th>
4996 <td class="description">Vertical/feed resolution</td></tr>
4997<tr><th>units</th>
4998 <td class="description">Units for resolution</td></tr>
4999</tbody></table>
798d6e29
MS
5000<h4 class="returnvalue">Return Value</h4>
5001 <p class="description">Horizontal/cross feed resolution or 0</p>
5002<h4 class="discussion">Discussion</h4>
5003 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 5004<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
5005
5006</p>
5007<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetState">ippGetState</a></h3>
5008 <p class="description">Get the IPP message state.</p>
5009<p class="code">
98d88c8d 5010<a href="#ipp_state_t">ipp_state_t</a> ippGetState(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5011<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5012<table class="list"><tbody>
5013<tr><th>ipp</th>
5014 <td class="description">IPP message</td></tr>
5015</tbody></table>
798d6e29
MS
5016<h4 class="returnvalue">Return Value</h4>
5017 <p class="description">IPP message state value</p>
5018<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetStatusCode">ippGetStatusCode</a></h3>
5019 <p class="description">Get the status code from an IPP response or event message.</p>
5020<p class="code">
98d88c8d 5021ipp_status_t ippGetStatusCode(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5022<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5023<table class="list"><tbody>
5024<tr><th>ipp</th>
5025 <td class="description">IPP response or event message</td></tr>
5026</tbody></table>
798d6e29
MS
5027<h4 class="returnvalue">Return Value</h4>
5028 <p class="description">Status code in IPP message</p>
5029<h3 class="function"><a id="ippGetString">ippGetString</a></h3>
98d88c8d
MS
5030 <p class="description"></p>
5031<p class="code">
5032const char *ippGetString(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element, const char **language);</p>
5033<h4 class="parameters">Parameters</h4>
5034<table class="list"><tbody>
5035<tr><th>attr</th>
5036 <td class="description">IPP attribute</td></tr>
5037<tr><th>element</th>
5038 <td class="description">Value number (0-based)</td></tr>
5039<tr><th>language</th>
5040 <td class="description">Language code (<code>NULL</code> for don't care)</td></tr>
5041</tbody></table>
798d6e29
MS
5042<h4 class="returnvalue">Return Value</h4>
5043 <p class="description">Get the string and optionally the language code for an attribute.</p>
5044 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 5045<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
5046
5047</p>
5048<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetValueTag">ippGetValueTag</a></h3>
5049 <p class="description">Get the value tag for an attribute.</p>
5050<p class="code">
98d88c8d 5051ipp_tag_t ippGetValueTag(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
798d6e29 5052<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5053<table class="list"><tbody>
5054<tr><th>attr</th>
5055 <td class="description">IPP attribute</td></tr>
5056</tbody></table>
798d6e29
MS
5057<h4 class="returnvalue">Return Value</h4>
5058 <p class="description">Value tag or <code>IPP_TAG_ZERO</code> on error</p>
5059<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetVersion">ippGetVersion</a></h3>
5060 <p class="description">Get the major and minor version number from an IPP message.</p>
5061<p class="code">
98d88c8d 5062int ippGetVersion(<a href="#ipp_t">ipp_t</a> *ipp, int *minor);</p>
798d6e29 5063<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5064<table class="list"><tbody>
5065<tr><th>ipp</th>
5066 <td class="description">IPP message</td></tr>
5067<tr><th>minor</th>
65bebeac 5068 <td class="description">Minor version number or <code>NULL</code> for don't care</td></tr>
98d88c8d 5069</tbody></table>
798d6e29
MS
5070<h4 class="returnvalue">Return Value</h4>
5071 <p class="description">Major version number or 0 on error</p>
5072<h3 class="function"><a id="ippLength">ippLength</a></h3>
5073 <p class="description">Compute the length of an IPP message.</p>
5074<p class="code">
98d88c8d 5075size_t ippLength(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5076<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5077<table class="list"><tbody>
5078<tr><th>ipp</th>
5079 <td class="description">IPP message</td></tr>
5080</tbody></table>
798d6e29
MS
5081<h4 class="returnvalue">Return Value</h4>
5082 <p class="description">Size of IPP message</p>
5083<h3 class="function"><a id="ippNew">ippNew</a></h3>
5084 <p class="description">Allocate a new IPP message.</p>
5085<p class="code">
98d88c8d 5086<a href="#ipp_t">ipp_t</a> *ippNew(void);</p>
798d6e29
MS
5087<h4 class="returnvalue">Return Value</h4>
5088 <p class="description">New IPP message</p>
5089<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippNewRequest">ippNewRequest</a></h3>
5090 <p class="description">Allocate a new IPP request message.</p>
5091<p class="code">
98d88c8d 5092<a href="#ipp_t">ipp_t</a> *ippNewRequest(ipp_op_t op);</p>
798d6e29 5093<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5094<table class="list"><tbody>
5095<tr><th>op</th>
5096 <td class="description">Operation code</td></tr>
5097</tbody></table>
798d6e29
MS
5098<h4 class="returnvalue">Return Value</h4>
5099 <p class="description">IPP request message</p>
5100<h4 class="discussion">Discussion</h4>
65bebeac
MS
5101 <p class="discussion">The new request message is initialized with the &quot;attributes-charset&quot; and
5102&quot;attributes-natural-language&quot; attributes added. The
5103&quot;attributes-natural-language&quot; value is derived from the current locale.
798d6e29
MS
5104
5105</p>
5106<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippNewResponse">ippNewResponse</a></h3>
5107 <p class="description">Allocate a new IPP response message.</p>
5108<p class="code">
98d88c8d 5109<a href="#ipp_t">ipp_t</a> *ippNewResponse(<a href="#ipp_t">ipp_t</a> *request);</p>
798d6e29 5110<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5111<table class="list"><tbody>
5112<tr><th>request</th>
5113 <td class="description">IPP request message</td></tr>
5114</tbody></table>
798d6e29
MS
5115<h4 class="returnvalue">Return Value</h4>
5116 <p class="description">IPP response message</p>
5117<h4 class="discussion">Discussion</h4>
65bebeac
MS
5118 <p class="discussion">The new response message is initialized with the same &quot;version-number&quot;,
5119&quot;request-id&quot;, &quot;attributes-charset&quot;, and &quot;attributes-natural-language&quot; as the
5120provided request message. If the &quot;attributes-charset&quot; or
5121&quot;attributes-natural-language&quot; attributes are missing from the request,
5122'utf-8' and a value derived from the current locale are substituted,
798d6e29
MS
5123respectively.
5124
5125</p>
5126<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippNextAttribute">ippNextAttribute</a></h3>
5127 <p class="description">Return the next attribute in the message.</p>
5128<p class="code">
98d88c8d 5129<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippNextAttribute(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5130<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5131<table class="list"><tbody>
5132<tr><th>ipp</th>
5133 <td class="description">IPP message</td></tr>
5134</tbody></table>
798d6e29
MS
5135<h4 class="returnvalue">Return Value</h4>
5136 <p class="description">Next attribute or <code>NULL</code> if none</p>
5137<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippOpString">ippOpString</a></h3>
5138 <p class="description">Return a name for the given operation id.</p>
5139<p class="code">
98d88c8d 5140const char *ippOpString(ipp_op_t op);</p>
798d6e29 5141<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5142<table class="list"><tbody>
5143<tr><th>op</th>
5144 <td class="description">Operation ID</td></tr>
5145</tbody></table>
798d6e29
MS
5146<h4 class="returnvalue">Return Value</h4>
5147 <p class="description">Name</p>
5148<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippOpValue">ippOpValue</a></h3>
5149 <p class="description">Return an operation id for the given name.</p>
5150<p class="code">
98d88c8d 5151ipp_op_t ippOpValue(const char *name);</p>
798d6e29 5152<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5153<table class="list"><tbody>
5154<tr><th>name</th>
5155 <td class="description">Textual name</td></tr>
5156</tbody></table>
798d6e29
MS
5157<h4 class="returnvalue">Return Value</h4>
5158 <p class="description">Operation ID</p>
5159<h3 class="function"><a id="ippPort">ippPort</a></h3>
5160 <p class="description">Return the default IPP port number.</p>
5161<p class="code">
98d88c8d 5162int ippPort(void);</p>
798d6e29
MS
5163<h4 class="returnvalue">Return Value</h4>
5164 <p class="description">Port number</p>
5165<h3 class="function"><a id="ippRead">ippRead</a></h3>
5166 <p class="description">Read data for an IPP message from a HTTP connection.</p>
5167<p class="code">
98d88c8d 5168<a href="#ipp_state_t">ipp_state_t</a> ippRead(<a href="#http_t">http_t</a> *http, <a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5169<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5170<table class="list"><tbody>
5171<tr><th>http</th>
5172 <td class="description">HTTP connection</td></tr>
5173<tr><th>ipp</th>
5174 <td class="description">IPP data</td></tr>
5175</tbody></table>
798d6e29
MS
5176<h4 class="returnvalue">Return Value</h4>
5177 <p class="description">Current state</p>
5178<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="ippReadFile">ippReadFile</a></h3>
5179 <p class="description">Read data for an IPP message from a file.</p>
5180<p class="code">
98d88c8d 5181<a href="#ipp_state_t">ipp_state_t</a> ippReadFile(int fd, <a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5182<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5183<table class="list"><tbody>
5184<tr><th>fd</th>
5185 <td class="description">HTTP data</td></tr>
5186<tr><th>ipp</th>
5187 <td class="description">IPP data</td></tr>
5188</tbody></table>
798d6e29
MS
5189<h4 class="returnvalue">Return Value</h4>
5190 <p class="description">Current state</p>
5191<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippReadIO">ippReadIO</a></h3>
5192 <p class="description">Read data for an IPP message.</p>
5193<p class="code">
98d88c8d
MS
5194<a href="#ipp_state_t">ipp_state_t</a> ippReadIO(void *src, <a href="#ipp_iocb_t">ipp_iocb_t</a> cb, int blocking, <a href="#ipp_t">ipp_t</a> *parent, <a href="#ipp_t">ipp_t</a> *ipp);</p>
5195<h4 class="parameters">Parameters</h4>
5196<table class="list"><tbody>
5197<tr><th>src</th>
5198 <td class="description">Data source</td></tr>
5199<tr><th>cb</th>
5200 <td class="description">Read callback function</td></tr>
5201<tr><th>blocking</th>
5202 <td class="description">Use blocking IO?</td></tr>
5203<tr><th>parent</th>
5204 <td class="description">Parent request, if any</td></tr>
5205<tr><th>ipp</th>
5206 <td class="description">IPP data</td></tr>
5207</tbody></table>
798d6e29
MS
5208<h4 class="returnvalue">Return Value</h4>
5209 <p class="description">Current state</p>
5210<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetBoolean">ippSetBoolean</a></h3>
5211 <p class="description">Set a boolean value in an attribute.</p>
5212<p class="code">
98d88c8d
MS
5213int ippSetBoolean(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, int boolvalue);</p>
5214<h4 class="parameters">Parameters</h4>
5215<table class="list"><tbody>
5216<tr><th>ipp</th>
5217 <td class="description">IPP message</td></tr>
5218<tr><th>attr</th>
5219 <td class="description">IPP attribute</td></tr>
5220<tr><th>element</th>
5221 <td class="description">Value number (0-based)</td></tr>
5222<tr><th>boolvalue</th>
5223 <td class="description">Boolean value</td></tr>
5224</tbody></table>
798d6e29
MS
5225<h4 class="returnvalue">Return Value</h4>
5226 <p class="description">1 on success, 0 on failure</p>
5227<h4 class="discussion">Discussion</h4>
5228 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5229the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5230<br>
5231The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5232<br>
5233The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5234<code>ippGetCount(attr)</code>.
798d6e29
MS
5235
5236</p>
5237<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetCollection">ippSetCollection</a></h3>
5238 <p class="description">Set a collection value in an attribute.</p>
5239<p class="code">
98d88c8d
MS
5240int ippSetCollection(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, <a href="#ipp_t">ipp_t</a> *colvalue);</p>
5241<h4 class="parameters">Parameters</h4>
5242<table class="list"><tbody>
5243<tr><th>ipp</th>
5244 <td class="description">IPP message</td></tr>
5245<tr><th>attr</th>
5246 <td class="description">IPP attribute</td></tr>
5247<tr><th>element</th>
5248 <td class="description">Value number (0-based)</td></tr>
5249<tr><th>colvalue</th>
5250 <td class="description">Collection value</td></tr>
5251</tbody></table>
798d6e29
MS
5252<h4 class="returnvalue">Return Value</h4>
5253 <p class="description">1 on success, 0 on failure</p>
5254<h4 class="discussion">Discussion</h4>
5255 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5256the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5257<br>
5258The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5259<br>
5260The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5261<code>ippGetCount(attr)</code>.
798d6e29
MS
5262
5263</p>
5264<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetDate">ippSetDate</a></h3>
65bebeac 5265 <p class="description">Set a dateTime value in an attribute.</p>
798d6e29 5266<p class="code">
98d88c8d
MS
5267int ippSetDate(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, const <a href="#ipp_uchar_t">ipp_uchar_t</a> *datevalue);</p>
5268<h4 class="parameters">Parameters</h4>
5269<table class="list"><tbody>
5270<tr><th>ipp</th>
5271 <td class="description">IPP message</td></tr>
5272<tr><th>attr</th>
5273 <td class="description">IPP attribute</td></tr>
5274<tr><th>element</th>
5275 <td class="description">Value number (0-based)</td></tr>
5276<tr><th>datevalue</th>
65bebeac 5277 <td class="description">dateTime value</td></tr>
98d88c8d 5278</tbody></table>
798d6e29
MS
5279<h4 class="returnvalue">Return Value</h4>
5280 <p class="description">1 on success, 0 on failure</p>
5281<h4 class="discussion">Discussion</h4>
5282 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5283the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5284<br>
5285The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5286<br>
5287The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5288<code>ippGetCount(attr)</code>.
798d6e29
MS
5289
5290</p>
5291<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetGroupTag">ippSetGroupTag</a></h3>
5292 <p class="description">Set the group tag of an attribute.</p>
5293<p class="code">
98d88c8d
MS
5294int ippSetGroupTag(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, ipp_tag_t group_tag);</p>
5295<h4 class="parameters">Parameters</h4>
5296<table class="list"><tbody>
5297<tr><th>ipp</th>
5298 <td class="description">IPP message</td></tr>
5299<tr><th>attr</th>
5300 <td class="description">Attribute</td></tr>
5301<tr><th>group_tag</th>
5302 <td class="description">Group tag</td></tr>
5303</tbody></table>
798d6e29
MS
5304<h4 class="returnvalue">Return Value</h4>
5305 <p class="description">1 on success, 0 on failure</p>
5306<h4 class="discussion">Discussion</h4>
5307 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5308the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5309<br>
5310The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5311<br>
5312The <code>group</code> parameter specifies the IPP attribute group tag: none
5313(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
5314event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
5315(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
5316(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).
5317
5318</p>
5319<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetInteger">ippSetInteger</a></h3>
5320 <p class="description">Set an integer or enum value in an attribute.</p>
5321<p class="code">
98d88c8d
MS
5322int ippSetInteger(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, int intvalue);</p>
5323<h4 class="parameters">Parameters</h4>
5324<table class="list"><tbody>
5325<tr><th>ipp</th>
5326 <td class="description">IPP message</td></tr>
5327<tr><th>attr</th>
5328 <td class="description">IPP attribute</td></tr>
5329<tr><th>element</th>
5330 <td class="description">Value number (0-based)</td></tr>
5331<tr><th>intvalue</th>
5332 <td class="description">Integer/enum value</td></tr>
5333</tbody></table>
798d6e29
MS
5334<h4 class="returnvalue">Return Value</h4>
5335 <p class="description">1 on success, 0 on failure</p>
5336<h4 class="discussion">Discussion</h4>
5337 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5338the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5339<br>
5340The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5341<br>
5342The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5343<code>ippGetCount(attr)</code>.
798d6e29
MS
5344
5345</p>
5346<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetName">ippSetName</a></h3>
5347 <p class="description">Set the name of an attribute.</p>
5348<p class="code">
98d88c8d
MS
5349int ippSetName(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, const char *name);</p>
5350<h4 class="parameters">Parameters</h4>
5351<table class="list"><tbody>
5352<tr><th>ipp</th>
5353 <td class="description">IPP message</td></tr>
5354<tr><th>attr</th>
5355 <td class="description">IPP attribute</td></tr>
5356<tr><th>name</th>
5357 <td class="description">Attribute name</td></tr>
5358</tbody></table>
798d6e29
MS
5359<h4 class="returnvalue">Return Value</h4>
5360 <p class="description">1 on success, 0 on failure</p>
5361<h4 class="discussion">Discussion</h4>
5362 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5363the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5364<br>
5365The <code>attr</code> parameter may be modified as a result of setting the value.
5366
5367</p>
5368<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippSetOctetString">ippSetOctetString</a></h3>
5369 <p class="description">Set an octetString value in an IPP attribute.</p>
5370<p class="code">
98d88c8d
MS
5371int ippSetOctetString(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, const void *data, int datalen);</p>
5372<h4 class="parameters">Parameters</h4>
5373<table class="list"><tbody>
5374<tr><th>ipp</th>
5375 <td class="description">IPP message</td></tr>
5376<tr><th>attr</th>
5377 <td class="description">IPP attribute</td></tr>
5378<tr><th>element</th>
5379 <td class="description">Value number (0-based)</td></tr>
5380<tr><th>data</th>
5381 <td class="description">Pointer to octetString data</td></tr>
5382<tr><th>datalen</th>
5383 <td class="description">Length of octetString data</td></tr>
5384</tbody></table>
798d6e29
MS
5385<h4 class="returnvalue">Return Value</h4>
5386 <p class="description">1 on success, 0 on failure</p>
5387<h4 class="discussion">Discussion</h4>
5388 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5389the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5390<br>
5391The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5392<br>
5393The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5394<code>ippGetCount(attr)</code>.
798d6e29
MS
5395
5396</p>
5397<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetOperation">ippSetOperation</a></h3>
5398 <p class="description">Set the operation ID in an IPP request message.</p>
5399<p class="code">
98d88c8d 5400int ippSetOperation(<a href="#ipp_t">ipp_t</a> *ipp, ipp_op_t op);</p>
798d6e29 5401<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5402<table class="list"><tbody>
5403<tr><th>ipp</th>
5404 <td class="description">IPP request message</td></tr>
5405<tr><th>op</th>
5406 <td class="description">Operation ID</td></tr>
5407</tbody></table>
798d6e29
MS
5408<h4 class="returnvalue">Return Value</h4>
5409 <p class="description">1 on success, 0 on failure</p>
5410<h4 class="discussion">Discussion</h4>
5411 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5412the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.
5413
5414</p>
5415<h3 class="function"><a id="ippSetPort">ippSetPort</a></h3>
98d88c8d 5416 <p class="description">Set the default port number.</p>
798d6e29 5417<p class="code">
98d88c8d 5418void ippSetPort(int p);</p>
798d6e29 5419<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5420<table class="list"><tbody>
5421<tr><th>p</th>
5422 <td class="description">Port number to use</td></tr>
5423</tbody></table>
798d6e29
MS
5424<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetRange">ippSetRange</a></h3>
5425 <p class="description">Set a rangeOfInteger value in an attribute.</p>
5426<p class="code">
98d88c8d
MS
5427int ippSetRange(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, int lowervalue, int uppervalue);</p>
5428<h4 class="parameters">Parameters</h4>
5429<table class="list"><tbody>
5430<tr><th>ipp</th>
5431 <td class="description">IPP message</td></tr>
5432<tr><th>attr</th>
5433 <td class="description">IPP attribute</td></tr>
5434<tr><th>element</th>
5435 <td class="description">Value number (0-based)</td></tr>
5436<tr><th>lowervalue</th>
5437 <td class="description">Lower bound for range</td></tr>
5438<tr><th>uppervalue</th>
5439 <td class="description">Upper bound for range</td></tr>
5440</tbody></table>
798d6e29
MS
5441<h4 class="returnvalue">Return Value</h4>
5442 <p class="description">1 on success, 0 on failure</p>
5443<h4 class="discussion">Discussion</h4>
5444 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5445the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5446<br>
5447The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5448<br>
5449The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5450<code>ippGetCount(attr)</code>.
798d6e29
MS
5451
5452</p>
5453<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetRequestId">ippSetRequestId</a></h3>
5454 <p class="description">Set the request ID in an IPP message.</p>
5455<p class="code">
98d88c8d 5456int ippSetRequestId(<a href="#ipp_t">ipp_t</a> *ipp, int request_id);</p>
798d6e29 5457<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5458<table class="list"><tbody>
5459<tr><th>ipp</th>
5460 <td class="description">IPP message</td></tr>
5461<tr><th>request_id</th>
5462 <td class="description">Request ID</td></tr>
5463</tbody></table>
798d6e29
MS
5464<h4 class="returnvalue">Return Value</h4>
5465 <p class="description">1 on success, 0 on failure</p>
5466<h4 class="discussion">Discussion</h4>
5467 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5468the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5469<br>
5470The <code>request_id</code> parameter must be greater than 0.
5471
5472</p>
5473<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetResolution">ippSetResolution</a></h3>
5474 <p class="description">Set a resolution value in an attribute.</p>
5475<p class="code">
98d88c8d
MS
5476int ippSetResolution(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, <a href="#ipp_res_t">ipp_res_t</a> unitsvalue, int xresvalue, int yresvalue);</p>
5477<h4 class="parameters">Parameters</h4>
5478<table class="list"><tbody>
5479<tr><th>ipp</th>
5480 <td class="description">IPP message</td></tr>
5481<tr><th>attr</th>
5482 <td class="description">IPP attribute</td></tr>
5483<tr><th>element</th>
5484 <td class="description">Value number (0-based)</td></tr>
5485<tr><th>unitsvalue</th>
5486 <td class="description">Resolution units</td></tr>
5487<tr><th>xresvalue</th>
5488 <td class="description">Horizontal/cross feed resolution</td></tr>
5489<tr><th>yresvalue</th>
5490 <td class="description">Vertical/feed resolution</td></tr>
5491</tbody></table>
798d6e29
MS
5492<h4 class="returnvalue">Return Value</h4>
5493 <p class="description">1 on success, 0 on failure</p>
5494<h4 class="discussion">Discussion</h4>
5495 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5496the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5497<br>
5498The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5499<br>
5500The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5501<code>ippGetCount(attr)</code>.
798d6e29
MS
5502
5503</p>
5504<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetState">ippSetState</a></h3>
5505 <p class="description">Set the current state of the IPP message.</p>
5506<p class="code">
98d88c8d 5507int ippSetState(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_state_t">ipp_state_t</a> state);</p>
798d6e29 5508<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5509<table class="list"><tbody>
5510<tr><th>ipp</th>
5511 <td class="description">IPP message</td></tr>
5512<tr><th>state</th>
5513 <td class="description">IPP state value</td></tr>
5514</tbody></table>
798d6e29
MS
5515<h4 class="returnvalue">Return Value</h4>
5516 <p class="description">1 on success, 0 on failure</p>
5517<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetStatusCode">ippSetStatusCode</a></h3>
5518 <p class="description">Set the status code in an IPP response or event message.</p>
5519<p class="code">
98d88c8d 5520int ippSetStatusCode(<a href="#ipp_t">ipp_t</a> *ipp, ipp_status_t status);</p>
798d6e29 5521<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5522<table class="list"><tbody>
5523<tr><th>ipp</th>
5524 <td class="description">IPP response or event message</td></tr>
5525<tr><th>status</th>
5526 <td class="description">Status code</td></tr>
5527</tbody></table>
798d6e29
MS
5528<h4 class="returnvalue">Return Value</h4>
5529 <p class="description">1 on success, 0 on failure</p>
5530<h4 class="discussion">Discussion</h4>
5531 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5532the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.
5533
5534</p>
5535<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetString">ippSetString</a></h3>
5536 <p class="description">Set a string value in an attribute.</p>
5537<p class="code">
98d88c8d
MS
5538int ippSetString(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, const char *strvalue);</p>
5539<h4 class="parameters">Parameters</h4>
5540<table class="list"><tbody>
5541<tr><th>ipp</th>
5542 <td class="description">IPP message</td></tr>
5543<tr><th>attr</th>
5544 <td class="description">IPP attribute</td></tr>
5545<tr><th>element</th>
5546 <td class="description">Value number (0-based)</td></tr>
5547<tr><th>strvalue</th>
5548 <td class="description">String value</td></tr>
5549</tbody></table>
798d6e29
MS
5550<h4 class="returnvalue">Return Value</h4>
5551 <p class="description">1 on success, 0 on failure</p>
5552<h4 class="discussion">Discussion</h4>
5553 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5554the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5555<br>
5556The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5557<br>
5558The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5559<code>ippGetCount(attr)</code>.
798d6e29
MS
5560
5561</p>
5562<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippSetStringf">ippSetStringf</a></h3>
5563 <p class="description">Set a formatted string value of an attribute.</p>
5564<p class="code">
98d88c8d
MS
5565int ippSetStringf(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, const char *format, ...);</p>
5566<h4 class="parameters">Parameters</h4>
5567<table class="list"><tbody>
5568<tr><th>ipp</th>
5569 <td class="description">IPP message</td></tr>
5570<tr><th>attr</th>
5571 <td class="description">IPP attribute</td></tr>
5572<tr><th>element</th>
5573 <td class="description">Value number (0-based)</td></tr>
5574<tr><th>format</th>
5575 <td class="description">Printf-style format string</td></tr>
5576<tr><th>...</th>
5577 <td class="description">Additional arguments as needed</td></tr>
5578</tbody></table>
798d6e29
MS
5579<h4 class="returnvalue">Return Value</h4>
5580 <p class="description">1 on success, 0 on failure</p>
5581<h4 class="discussion">Discussion</h4>
5582 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5583the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5584<br>
5585The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5586<br>
5587The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5588<code>ippGetCount(attr)</code>.<br>
798d6e29
MS
5589<br>
5590The <code>format</code> parameter uses formatting characters compatible with the
5591printf family of standard functions. Additional arguments follow it as
5592needed. The formatted string is truncated as needed to the maximum length of
5593the corresponding value type.
5594
5595</p>
5596<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippSetStringfv">ippSetStringfv</a></h3>
5597 <p class="description">Set a formatted string value of an attribute.</p>
5598<p class="code">
98d88c8d
MS
5599int ippSetStringfv(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, const char *format, va_list ap);</p>
5600<h4 class="parameters">Parameters</h4>
5601<table class="list"><tbody>
5602<tr><th>ipp</th>
5603 <td class="description">IPP message</td></tr>
5604<tr><th>attr</th>
5605 <td class="description">IPP attribute</td></tr>
5606<tr><th>element</th>
5607 <td class="description">Value number (0-based)</td></tr>
5608<tr><th>format</th>
5609 <td class="description">Printf-style format string</td></tr>
5610<tr><th>ap</th>
5611 <td class="description">Pointer to additional arguments</td></tr>
5612</tbody></table>
798d6e29
MS
5613<h4 class="returnvalue">Return Value</h4>
5614 <p class="description">1 on success, 0 on failure</p>
5615<h4 class="discussion">Discussion</h4>
5616 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5617the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5618<br>
5619The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5620<br>
5621The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5622<code>ippGetCount(attr)</code>.<br>
798d6e29
MS
5623<br>
5624The <code>format</code> parameter uses formatting characters compatible with the
5625printf family of standard functions. Additional arguments follow it as
5626needed. The formatted string is truncated as needed to the maximum length of
5627the corresponding value type.
5628
5629</p>
5630<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetValueTag">ippSetValueTag</a></h3>
5631 <p class="description">Set the value tag of an attribute.</p>
5632<p class="code">
98d88c8d
MS
5633int ippSetValueTag(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, ipp_tag_t value_tag);</p>
5634<h4 class="parameters">Parameters</h4>
5635<table class="list"><tbody>
5636<tr><th>ipp</th>
5637 <td class="description">IPP message</td></tr>
5638<tr><th>attr</th>
5639 <td class="description">IPP attribute</td></tr>
5640<tr><th>value_tag</th>
5641 <td class="description">Value tag</td></tr>
5642</tbody></table>
798d6e29
MS
5643<h4 class="returnvalue">Return Value</h4>
5644 <p class="description">1 on success, 0 on failure</p>
5645<h4 class="discussion">Discussion</h4>
5646 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5647the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5648<br>
5649The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5650<br>
5651Integer (<code>IPP_TAG_INTEGER</code>) values can be promoted to rangeOfInteger
5652(<code>IPP_TAG_RANGE</code>) values, the various string tags can be promoted to name
5653(<code>IPP_TAG_NAME</code>) or nameWithLanguage (<code>IPP_TAG_NAMELANG</code>) values, text
5654(<code>IPP_TAG_TEXT</code>) values can be promoted to textWithLanguage
5655(<code>IPP_TAG_TEXTLANG</code>) values, and all values can be demoted to the various
5656out-of-band value tags such as no-value (<code>IPP_TAG_NOVALUE</code>). All other changes
5657will be rejected.<br>
5658<br>
5659Promoting a string attribute to nameWithLanguage or textWithLanguage adds the language
5660code in the &quot;attributes-natural-language&quot; attribute or, if not present, the language
5661code for the current locale.
5662
5663</p>
5664<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetVersion">ippSetVersion</a></h3>
5665 <p class="description">Set the version number in an IPP message.</p>
5666<p class="code">
98d88c8d
MS
5667int ippSetVersion(<a href="#ipp_t">ipp_t</a> *ipp, int major, int minor);</p>
5668<h4 class="parameters">Parameters</h4>
5669<table class="list"><tbody>
5670<tr><th>ipp</th>
5671 <td class="description">IPP message</td></tr>
5672<tr><th>major</th>
5673 <td class="description">Major version number (major.minor)</td></tr>
5674<tr><th>minor</th>
5675 <td class="description">Minor version number (major.minor)</td></tr>
5676</tbody></table>
798d6e29
MS
5677<h4 class="returnvalue">Return Value</h4>
5678 <p class="description">1 on success, 0 on failure</p>
5679<h4 class="discussion">Discussion</h4>
5680 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5681the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5682<br>
5683The valid version numbers are currently 1.0, 1.1, 2.0, 2.1, and 2.2.
5684
5685</p>
5686<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="ippStateString">ippStateString</a></h3>
5687 <p class="description">Return the name corresponding to a state value.</p>
5688<p class="code">
98d88c8d 5689const char *ippStateString(<a href="#ipp_state_t">ipp_state_t</a> state);</p>
798d6e29 5690<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5691<table class="list"><tbody>
5692<tr><th>state</th>
5693 <td class="description">State value</td></tr>
5694</tbody></table>
798d6e29
MS
5695<h4 class="returnvalue">Return Value</h4>
5696 <p class="description">State name</p>
5697<h3 class="function"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span><a id="ippTagString">ippTagString</a></h3>
5698 <p class="description">Return the tag name corresponding to a tag value.</p>
5699<p class="code">
98d88c8d 5700const char *ippTagString(ipp_tag_t tag);</p>
798d6e29 5701<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5702<table class="list"><tbody>
5703<tr><th>tag</th>
5704 <td class="description">Tag value</td></tr>
5705</tbody></table>
798d6e29
MS
5706<h4 class="returnvalue">Return Value</h4>
5707 <p class="description">Tag name</p>
5708<h4 class="discussion">Discussion</h4>
65bebeac 5709 <p class="discussion">The returned names are defined in RFC 8011 and the IANA IPP Registry.
798d6e29
MS
5710
5711</p>
5712<h3 class="function"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span><a id="ippTagValue">ippTagValue</a></h3>
5713 <p class="description">Return the tag value corresponding to a tag name.</p>
5714<p class="code">
98d88c8d 5715ipp_tag_t ippTagValue(const char *name);</p>
798d6e29 5716<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5717<table class="list"><tbody>
5718<tr><th>name</th>
5719 <td class="description">Tag name</td></tr>
5720</tbody></table>
798d6e29
MS
5721<h4 class="returnvalue">Return Value</h4>
5722 <p class="description">Tag value</p>
5723<h4 class="discussion">Discussion</h4>
65bebeac 5724 <p class="discussion">The tag names are defined in RFC 8011 and the IANA IPP Registry.
798d6e29
MS
5725
5726</p>
5727<h3 class="function"><a id="ippTimeToDate">ippTimeToDate</a></h3>
65bebeac 5728 <p class="description">Convert from time in seconds to RFC 2579 format.</p>
798d6e29 5729<p class="code">
98d88c8d 5730const <a href="#ipp_uchar_t">ipp_uchar_t</a> *ippTimeToDate(time_t t);</p>
798d6e29 5731<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5732<table class="list"><tbody>
5733<tr><th>t</th>
65bebeac 5734 <td class="description">Time in seconds</td></tr>
98d88c8d 5735</tbody></table>
798d6e29 5736<h4 class="returnvalue">Return Value</h4>
65bebeac 5737 <p class="description">RFC-2579 date/time data</p>
798d6e29
MS
5738<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippValidateAttribute">ippValidateAttribute</a></h3>
5739 <p class="description">Validate the contents of an attribute.</p>
5740<p class="code">
98d88c8d 5741int ippValidateAttribute(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
798d6e29 5742<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5743<table class="list"><tbody>
5744<tr><th>attr</th>
5745 <td class="description">Attribute</td></tr>
5746</tbody></table>
798d6e29
MS
5747<h4 class="returnvalue">Return Value</h4>
5748 <p class="description">1 if valid, 0 otherwise</p>
5749<h4 class="discussion">Discussion</h4>
5750 <p class="discussion">This function validates the contents of an attribute based on the name and
5751value tag. 1 is returned if the attribute is valid, 0 otherwise. On
65bebeac 5752failure, <a href="#cupsLastErrorString"><code>cupsLastErrorString</code></a> is set to a human-readable message.
798d6e29
MS
5753
5754</p>
5755<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippValidateAttributes">ippValidateAttributes</a></h3>
5756 <p class="description">Validate all attributes in an IPP message.</p>
5757<p class="code">
98d88c8d 5758int ippValidateAttributes(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5759<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5760<table class="list"><tbody>
5761<tr><th>ipp</th>
5762 <td class="description">IPP message</td></tr>
5763</tbody></table>
798d6e29
MS
5764<h4 class="returnvalue">Return Value</h4>
5765 <p class="description">1 if valid, 0 otherwise</p>
5766<h4 class="discussion">Discussion</h4>
5767 <p class="discussion">This function validates the contents of the IPP message, including each
65bebeac
MS
5768attribute. Like <a href="#ippValidateAttribute"><code>ippValidateAttribute</code></a>, <a href="#cupsLastErrorString"><code>cupsLastErrorString</code></a> is
5769set to a human-readable message on failure.
798d6e29
MS
5770
5771</p>
5772<h3 class="function"><a id="ippWrite">ippWrite</a></h3>
5773 <p class="description">Write data for an IPP message to a HTTP connection.</p>
5774<p class="code">
98d88c8d 5775<a href="#ipp_state_t">ipp_state_t</a> ippWrite(<a href="#http_t">http_t</a> *http, <a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5776<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5777<table class="list"><tbody>
5778<tr><th>http</th>
5779 <td class="description">HTTP connection</td></tr>
5780<tr><th>ipp</th>
5781 <td class="description">IPP data</td></tr>
5782</tbody></table>
798d6e29
MS
5783<h4 class="returnvalue">Return Value</h4>
5784 <p class="description">Current state</p>
5785<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="ippWriteFile">ippWriteFile</a></h3>
5786 <p class="description">Write data for an IPP message to a file.</p>
5787<p class="code">
98d88c8d 5788<a href="#ipp_state_t">ipp_state_t</a> ippWriteFile(int fd, <a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5789<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5790<table class="list"><tbody>
5791<tr><th>fd</th>
5792 <td class="description">HTTP data</td></tr>
5793<tr><th>ipp</th>
5794 <td class="description">IPP data</td></tr>
5795</tbody></table>
798d6e29
MS
5796<h4 class="returnvalue">Return Value</h4>
5797 <p class="description">Current state</p>
5798<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippWriteIO">ippWriteIO</a></h3>
5799 <p class="description">Write data for an IPP message.</p>
5800<p class="code">
98d88c8d
MS
5801<a href="#ipp_state_t">ipp_state_t</a> ippWriteIO(void *dst, <a href="#ipp_iocb_t">ipp_iocb_t</a> cb, int blocking, <a href="#ipp_t">ipp_t</a> *parent, <a href="#ipp_t">ipp_t</a> *ipp);</p>
5802<h4 class="parameters">Parameters</h4>
5803<table class="list"><tbody>
5804<tr><th>dst</th>
5805 <td class="description">Destination</td></tr>
5806<tr><th>cb</th>
5807 <td class="description">Write callback function</td></tr>
5808<tr><th>blocking</th>
5809 <td class="description">Use blocking IO?</td></tr>
5810<tr><th>parent</th>
5811 <td class="description">Parent IPP message</td></tr>
5812<tr><th>ipp</th>
5813 <td class="description">IPP data</td></tr>
5814</tbody></table>
798d6e29
MS
5815<h4 class="returnvalue">Return Value</h4>
5816 <p class="description">Current state</p>
798d6e29 5817 <h2 class="title"><a id="TYPES">Data Types</a></h2>
798d6e29
MS
5818 <h3 class="typedef"><a id="cups_client_cert_cb_t"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span>cups_client_cert_cb_t</a></h3>
5819 <p class="description">Client credentials callback
5820</p>
5821 <p class="code">
53af7f21 5822typedef int(*)(http_t *http, void *tls, cups_array_t *distinguished_names, void *user_data)cups_client_cert_cb_t;
798d6e29
MS
5823</p>
5824 <h3 class="typedef"><a id="cups_dest_cb_t"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span>cups_dest_cb_t</a></h3>
5825 <p class="description">Destination enumeration callback
5826</p>
5827 <p class="code">
5828typedef int(*)(void *user_data, unsigned flags, <a href="#cups_dest_t">cups_dest_t</a> *dest)cups_dest_cb_t;
5829</p>
5830 <h3 class="typedef"><a id="cups_dest_t">cups_dest_t</a></h3>
5831 <p class="description">Destination</p>
5832 <p class="code">
5833typedef struct <a href="#cups_dest_s">cups_dest_s</a> cups_dest_t;
5834</p>
5835 <h3 class="typedef"><a id="cups_dinfo_t"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span>cups_dinfo_t</a></h3>
5836 <p class="description">Destination capability and status
5837information </p>
5838 <p class="code">
5839typedef struct _cups_dinfo_s cups_dinfo_t;
798d6e29
MS
5840</p>
5841 <h3 class="typedef"><a id="cups_job_t">cups_job_t</a></h3>
5842 <p class="description">Job</p>
5843 <p class="code">
5844typedef struct <a href="#cups_job_s">cups_job_s</a> cups_job_t;
798d6e29
MS
5845</p>
5846 <h3 class="typedef"><a id="cups_option_t">cups_option_t</a></h3>
5847 <p class="description">Printer Options</p>
5848 <p class="code">
5849typedef struct <a href="#cups_option_s">cups_option_s</a> cups_option_t;
5850</p>
5851 <h3 class="typedef"><a id="cups_password_cb2_t"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span>cups_password_cb2_t</a></h3>
5852 <p class="description">New password callback
5853</p>
5854 <p class="code">
5855typedef const char *(*)(const char *prompt, <a href="#http_t">http_t</a> *http, const char *method, const char *resource, void *user_data)cups_password_cb2_t;
798d6e29
MS
5856</p>
5857 <h3 class="typedef"><a id="cups_ptype_t">cups_ptype_t</a></h3>
5858 <p class="description">Printer type/capability bits</p>
5859 <p class="code">
5860typedef unsigned cups_ptype_t;
5861</p>
5862 <h3 class="typedef"><a id="cups_server_cert_cb_t"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span>cups_server_cert_cb_t</a></h3>
5863 <p class="description">Server credentials callback
5864</p>
5865 <p class="code">
53af7f21 5866typedef int(*)(http_t *http, void *tls, cups_array_t *certs, void *user_data)cups_server_cert_cb_t;
798d6e29
MS
5867</p>
5868 <h3 class="typedef"><a id="cups_size_t"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span>cups_size_t</a></h3>
5869 <p class="description">Media Size </p>
5870 <p class="code">
5871typedef struct <a href="#cups_size_s">cups_size_s</a> cups_size_t;
798d6e29
MS
5872</p>
5873 <h3 class="typedef"><a id="http_addr_t"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span>http_addr_t</a></h3>
5874 <p class="description">Socket address union, which
5875makes using IPv6 and other
5876address types easier and
5877more portable. </p>
5878 <p class="code">
5879typedef union _http_addr_u / http_addr_t;
798d6e29
MS
5880</p>
5881 <h3 class="typedef"><a id="http_encoding_t">http_encoding_t</a></h3>
5882 <p class="description">HTTP transfer encoding values</p>
5883 <p class="code">
5884typedef enum <a href="#http_encoding_e">http_encoding_e</a> http_encoding_t;
5885</p>
5886 <h3 class="typedef"><a id="http_encryption_t">http_encryption_t</a></h3>
5887 <p class="description">HTTP encryption values</p>
5888 <p class="code">
5889typedef enum <a href="#http_encryption_e">http_encryption_e</a> http_encryption_t;
5890</p>
5891 <h3 class="typedef"><a id="http_field_t">http_field_t</a></h3>
5892 <p class="description">HTTP field names</p>
5893 <p class="code">
5894typedef enum <a href="#http_field_e">http_field_e</a> http_field_t;
5895</p>
5896 <h3 class="typedef"><a id="http_keepalive_t">http_keepalive_t</a></h3>
5897 <p class="description">HTTP keep-alive values</p>
5898 <p class="code">
5899typedef enum <a href="#http_keepalive_e">http_keepalive_e</a> http_keepalive_t;
5900</p>
5901 <h3 class="typedef"><a id="http_state_t">http_state_t</a></h3>
5902 <p class="description">HTTP state values; states
5903are server-oriented...</p>
5904 <p class="code">
5905typedef enum <a href="#http_state_e">http_state_e</a> http_state_t;
5906</p>
5907 <h3 class="typedef"><a id="http_t">http_t</a></h3>
5908 <p class="description">HTTP connection type</p>
5909 <p class="code">
5910typedef struct _http_s http_t;
5911</p>
5912 <h3 class="typedef"><a id="http_timeout_cb_t"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span>http_timeout_cb_t</a></h3>
5913 <p class="description">HTTP timeout callback </p>
5914 <p class="code">
5915typedef int(*)(http_t *http, void *user_data)http_timeout_cb_t;
5916</p>
5917 <h3 class="typedef"><a id="http_trust_t"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span>http_trust_t</a></h3>
5918 <p class="description">Level of trust for credentials </p>
5919 <p class="code">
5920typedef enum <a href="#http_trust_e">http_trust_e</a> http_trust_t;
5921</p>
5922 <h3 class="typedef"><a id="http_uri_coding_t">http_uri_coding_t</a></h3>
5923 <p class="description">URI en/decode flags</p>
5924 <p class="code">
5925typedef enum <a href="#http_uri_coding_e">http_uri_coding_e</a> http_uri_coding_t;
5926</p>
5927 <h3 class="typedef"><a id="http_uri_status_t"><span class="info">&#160;CUPS 1.2&#160;</span>http_uri_status_t</a></h3>
5928 <p class="description">URI separation status </p>
5929 <p class="code">
5930typedef enum <a href="#http_uri_status_e">http_uri_status_e</a> http_uri_status_t;
798d6e29
MS
5931</p>
5932 <h3 class="typedef"><a id="ipp_attribute_t">ipp_attribute_t</a></h3>
5933 <p class="description">IPP attribute</p>
5934 <p class="code">
5935typedef struct _ipp_attribute_s ipp_attribute_t;
5936</p>
65bebeac
MS
5937 <h3 class="typedef"><a id="ipp_copycb_t"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span>ipp_copycb_t</a></h3>
5938 <p class="description">ippCopyAttributes callback function </p>
798d6e29
MS
5939 <p class="code">
5940typedef int(*)(void *context, <a href="#ipp_t">ipp_t</a> *dst, <a href="#ipp_attribute_t">ipp_attribute_t</a> *attr)ipp_copycb_t;
798d6e29
MS
5941</p>
5942 <h3 class="typedef"><a id="ipp_iocb_t"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span>ipp_iocb_t</a></h3>
65bebeac 5943 <p class="description">ippReadIO/ippWriteIO callback function </p>
798d6e29 5944 <p class="code">
98d88c8d 5945typedef ssize_t(*)(void *context, ipp_uchar_t *buffer, size_t bytes) ipp_iocb_t;
798d6e29
MS
5946</p>
5947 <h3 class="typedef"><a id="ipp_orient_t">ipp_orient_t</a></h3>
5948 <p class="description">Orientation values</p>
5949 <p class="code">
5950typedef enum <a href="#ipp_orient_e">ipp_orient_e</a> ipp_orient_t;
5951</p>
5952 <h3 class="typedef"><a id="ipp_pstate_t">ipp_pstate_t</a></h3>
65bebeac 5953 <p class="description">Printer state values</p>
798d6e29
MS
5954 <p class="code">
5955typedef enum <a href="#ipp_pstate_e">ipp_pstate_e</a> ipp_pstate_t;
5956</p>
5957 <h3 class="typedef"><a id="ipp_quality_t">ipp_quality_t</a></h3>
65bebeac 5958 <p class="description">Print quality values</p>
798d6e29
MS
5959 <p class="code">
5960typedef enum <a href="#ipp_quality_e">ipp_quality_e</a> ipp_quality_t;
5961</p>
5962 <h3 class="typedef"><a id="ipp_res_t">ipp_res_t</a></h3>
5963 <p class="description">Resolution units</p>
5964 <p class="code">
5965typedef enum <a href="#ipp_res_e">ipp_res_e</a> ipp_res_t;
06a5a4d3
MS
5966</p>
5967 <h3 class="typedef"><a id="ipp_rstate_t">ipp_rstate_t</a></h3>
5968 <p class="description">resource-state values</p>
5969 <p class="code">
5970typedef enum <a href="#ipp_rstate_e">ipp_rstate_e</a> ipp_rstate_t;
5971</p>
5972 <h3 class="typedef"><a id="ipp_sstate_t">ipp_sstate_t</a></h3>
5973 <p class="description">system-state values</p>
5974 <p class="code">
5975typedef enum <a href="#ipp_sstate_e">ipp_sstate_e</a> ipp_sstate_t;
798d6e29
MS
5976</p>
5977 <h3 class="typedef"><a id="ipp_state_t">ipp_state_t</a></h3>
65bebeac 5978 <p class="description">ipp_t state values</p>
798d6e29
MS
5979 <p class="code">
5980typedef enum <a href="#ipp_state_e">ipp_state_e</a> ipp_state_t;
5981</p>
5982 <h3 class="typedef"><a id="ipp_t">ipp_t</a></h3>
5983 <p class="description">IPP request/response data</p>
5984 <p class="code">
5985typedef struct _ipp_s ipp_t;
798d6e29
MS
5986</p>
5987 <h2 class="title"><a id="STRUCTURES">Structures</a></h2>
798d6e29
MS
5988<h3 class="struct"><a id="cups_dest_s">cups_dest_s</a></h3>
5989 <p class="description">Destination</p>
5990<p class="code">struct cups_dest_s {<br>
5991&#160;&#160;&#160;&#160;char *name, *instance;<br>
5992&#160;&#160;&#160;&#160;int is_default;<br>
5993&#160;&#160;&#160;&#160;int num_options;<br>
5994&#160;&#160;&#160;&#160;<a href="#cups_option_t">cups_option_t</a> *options;<br>
5995};</p>
5996<h4 class="members">Members</h4>
98d88c8d
MS
5997<table class="list"><tbody>
5998<tr><th>instance </th>
5999 <td class="description">Local instance name or NULL</td></tr>
6000<tr><th>is_default </th>
6001 <td class="description">Is this printer the default?</td></tr>
6002<tr><th>num_options </th>
6003 <td class="description">Number of options</td></tr>
6004<tr><th>options </th>
6005 <td class="description">Options</td></tr>
6006</tbody></table>
798d6e29
MS
6007<h3 class="struct"><a id="cups_job_s">cups_job_s</a></h3>
6008 <p class="description">Job</p>
6009<p class="code">struct cups_job_s {<br>
6010&#160;&#160;&#160;&#160;time_t completed_time;<br>
6011&#160;&#160;&#160;&#160;time_t creation_time;<br>
6012&#160;&#160;&#160;&#160;char *dest;<br>
6013&#160;&#160;&#160;&#160;char *format;<br>
6014&#160;&#160;&#160;&#160;int id;<br>
6015&#160;&#160;&#160;&#160;int priority;<br>
6016&#160;&#160;&#160;&#160;time_t processing_time;<br>
6017&#160;&#160;&#160;&#160;int size;<br>
6018&#160;&#160;&#160;&#160;ipp_jstate_t state;<br>
6019&#160;&#160;&#160;&#160;char *title;<br>
6020&#160;&#160;&#160;&#160;char *user;<br>
6021};</p>
6022<h4 class="members">Members</h4>
98d88c8d
MS
6023<table class="list"><tbody>
6024<tr><th>completed_time </th>
6025 <td class="description">Time the job was completed</td></tr>
6026<tr><th>creation_time </th>
6027 <td class="description">Time the job was created</td></tr>
6028<tr><th>dest </th>
6029 <td class="description">Printer or class name</td></tr>
6030<tr><th>format </th>
6031 <td class="description">Document format</td></tr>
6032<tr><th>id </th>
6033 <td class="description">The job ID</td></tr>
6034<tr><th>priority </th>
6035 <td class="description">Priority (1-100)</td></tr>
6036<tr><th>processing_time </th>
6037 <td class="description">Time the job was processed</td></tr>
6038<tr><th>size </th>
6039 <td class="description">Size in kilobytes</td></tr>
6040<tr><th>state </th>
6041 <td class="description">Job state</td></tr>
6042<tr><th>title </th>
6043 <td class="description">Title/job name</td></tr>
6044<tr><th>user </th>
6045 <td class="description">User that submitted the job</td></tr>
6046</tbody></table>
798d6e29
MS
6047<h3 class="struct"><a id="cups_option_s">cups_option_s</a></h3>
6048 <p class="description">Printer Options</p>
6049<p class="code">struct cups_option_s {<br>
6050&#160;&#160;&#160;&#160;char *name;<br>
6051&#160;&#160;&#160;&#160;char *value;<br>
6052};</p>
6053<h4 class="members">Members</h4>
98d88c8d
MS
6054<table class="list"><tbody>
6055<tr><th>name </th>
6056 <td class="description">Name of option</td></tr>
6057<tr><th>value </th>
6058 <td class="description">Value of option</td></tr>
6059</tbody></table>
798d6e29
MS
6060<h3 class="struct"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cups_size_s">cups_size_s</a></h3>
6061 <p class="description">Media Size </p>
6062<p class="code">struct cups_size_s {<br>
6063&#160;&#160;&#160;&#160;char media[128];<br>
6064&#160;&#160;&#160;&#160;int width, length, bottom, left, right, top;<br>
6065};</p>
6066<h4 class="members">Members</h4>
98d88c8d
MS
6067<table class="list"><tbody>
6068<tr><th>media[128] </th>
6069 <td class="description">Media name to use</td></tr>
6070<tr><th>top </th>
6071 <td class="description">Top margin in hundredths of
6072millimeters</td></tr>
6073</tbody></table>
73721e3e
MS
6074 <h2 class="title"><a id="VARIABLES">Variables</a></h2>
6075 <h3 class="variable"><a id="kSecOidOrganizationalUnit">kSecOidOrganizationalUnit</a></h3>
6076 <p class="description">Constants, very secure stuff...</p>
6077 <p class="code">extern const void *kSecOidOrganizationalUnit;</p>
798d6e29 6078 <h2 class="title"><a id="ENUMERATIONS">Constants</a></h2>
798d6e29
MS
6079 <h3 class="enumeration"><a id="cups_ptype_e">cups_ptype_e</a></h3>
6080 <p class="description">Printer type/capability bit
6081constants</p>
6082 <h4 class="constants">Constants</h4>
98d88c8d
MS
6083 <table class="list"><tbody>
6084 <tr><th>CUPS_PRINTER_AUTHENTICATED <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Printer requires authentication
6085</td></tr>
6086 <tr><th>CUPS_PRINTER_BIND </th> <td class="description">Can bind output</td></tr>
6087 <tr><th>CUPS_PRINTER_BW </th> <td class="description">Can do B&amp;W printing</td></tr>
6088 <tr><th>CUPS_PRINTER_CLASS </th> <td class="description">Printer class</td></tr>
6089 <tr><th>CUPS_PRINTER_COLLATE </th> <td class="description">Can quickly collate copies</td></tr>
6090 <tr><th>CUPS_PRINTER_COLOR </th> <td class="description">Can do color printing</td></tr>
6091 <tr><th>CUPS_PRINTER_COMMANDS <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Printer supports maintenance commands
6092</td></tr>
6093 <tr><th>CUPS_PRINTER_COPIES </th> <td class="description">Can do copies in hardware</td></tr>
6094 <tr><th>CUPS_PRINTER_COVER </th> <td class="description">Can cover output</td></tr>
6095 <tr><th>CUPS_PRINTER_DEFAULT </th> <td class="description">Default printer on network</td></tr>
6096 <tr><th>CUPS_PRINTER_DISCOVERED <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Printer was discovered </td></tr>
6097 <tr><th>CUPS_PRINTER_DUPLEX </th> <td class="description">Can do two-sided printing</td></tr>
6098 <tr><th>CUPS_PRINTER_FAX </th> <td class="description">Fax queue</td></tr>
6099 <tr><th>CUPS_PRINTER_LARGE </th> <td class="description">Can print on D/E/A1/A0-size media</td></tr>
6100 <tr><th>CUPS_PRINTER_LOCAL </th> <td class="description">Local printer or class</td></tr>
6101 <tr><th>CUPS_PRINTER_MEDIUM </th> <td class="description">Can print on Tabloid/B/C/A3/A2-size media</td></tr>
6102 <tr><th>CUPS_PRINTER_NOT_SHARED <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Printer is not shared
6103</td></tr>
6104 <tr><th>CUPS_PRINTER_PUNCH </th> <td class="description">Can punch output</td></tr>
6105 <tr><th>CUPS_PRINTER_REJECTING </th> <td class="description">Printer is rejecting jobs</td></tr>
6106 <tr><th>CUPS_PRINTER_REMOTE </th> <td class="description">Remote printer or class</td></tr>
6107 <tr><th>CUPS_PRINTER_SMALL </th> <td class="description">Can print on Letter/Legal/A4-size media</td></tr>
6108 <tr><th>CUPS_PRINTER_SORT </th> <td class="description">Can sort output</td></tr>
6109 <tr><th>CUPS_PRINTER_STAPLE </th> <td class="description">Can staple output</td></tr>
6110 <tr><th>CUPS_PRINTER_VARIABLE </th> <td class="description">Can print on rolls and custom-size media</td></tr>
6111</tbody></table>
798d6e29
MS
6112 <h3 class="enumeration"><a id="http_encoding_e">http_encoding_e</a></h3>
6113 <p class="description">HTTP transfer encoding values</p>
6114 <h4 class="constants">Constants</h4>
98d88c8d
MS
6115 <table class="list"><tbody>
6116 <tr><th>HTTP_ENCODING_CHUNKED </th> <td class="description">Data is chunked</td></tr>
6117 <tr><th>HTTP_ENCODING_FIELDS </th> <td class="description">Sending HTTP fields</td></tr>
6118 <tr><th>HTTP_ENCODING_LENGTH </th> <td class="description">Data is sent with Content-Length</td></tr>
6119</tbody></table>
798d6e29
MS
6120 <h3 class="enumeration"><a id="http_encryption_e">http_encryption_e</a></h3>
6121 <p class="description">HTTP encryption values</p>
6122 <h4 class="constants">Constants</h4>
98d88c8d
MS
6123 <table class="list"><tbody>
6124 <tr><th>HTTP_ENCRYPTION_ALWAYS </th> <td class="description">Always encrypt (SSL)</td></tr>
6125 <tr><th>HTTP_ENCRYPTION_IF_REQUESTED </th> <td class="description">Encrypt if requested (TLS upgrade)</td></tr>
6126 <tr><th>HTTP_ENCRYPTION_NEVER </th> <td class="description">Never encrypt</td></tr>
6127 <tr><th>HTTP_ENCRYPTION_REQUIRED </th> <td class="description">Encryption is required (TLS upgrade)</td></tr>
6128</tbody></table>
798d6e29
MS
6129 <h3 class="enumeration"><a id="http_field_e">http_field_e</a></h3>
6130 <p class="description">HTTP field names</p>
6131 <h4 class="constants">Constants</h4>
98d88c8d
MS
6132 <table class="list"><tbody>
6133 <tr><th>HTTP_FIELD_ACCEPT_ENCODING <span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span></th> <td class="description">Accepting-Encoding field </td></tr>
6134 <tr><th>HTTP_FIELD_ACCEPT_LANGUAGE </th> <td class="description">Accept-Language field</td></tr>
6135 <tr><th>HTTP_FIELD_ACCEPT_RANGES </th> <td class="description">Accept-Ranges field</td></tr>
6136 <tr><th>HTTP_FIELD_ALLOW <span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span></th> <td class="description">Allow field </td></tr>
73721e3e 6137 <tr><th>HTTP_FIELD_AUTHENTICATION_INFO <span class="info">&#160;CUPS 2.2.9)&#160;</span></th> <td class="description">Authentication-Info field (</td></tr>
98d88c8d
MS
6138 <tr><th>HTTP_FIELD_AUTHORIZATION </th> <td class="description">Authorization field</td></tr>
6139 <tr><th>HTTP_FIELD_CONNECTION </th> <td class="description">Connection field</td></tr>
6140 <tr><th>HTTP_FIELD_CONTENT_ENCODING </th> <td class="description">Content-Encoding field</td></tr>
6141 <tr><th>HTTP_FIELD_CONTENT_LANGUAGE </th> <td class="description">Content-Language field</td></tr>
6142 <tr><th>HTTP_FIELD_CONTENT_LENGTH </th> <td class="description">Content-Length field</td></tr>
6143 <tr><th>HTTP_FIELD_CONTENT_LOCATION </th> <td class="description">Content-Location field</td></tr>
6144 <tr><th>HTTP_FIELD_CONTENT_MD5 </th> <td class="description">Content-MD5 field</td></tr>
6145 <tr><th>HTTP_FIELD_CONTENT_RANGE </th> <td class="description">Content-Range field</td></tr>
6146 <tr><th>HTTP_FIELD_CONTENT_TYPE </th> <td class="description">Content-Type field</td></tr>
6147 <tr><th>HTTP_FIELD_CONTENT_VERSION </th> <td class="description">Content-Version field</td></tr>
6148 <tr><th>HTTP_FIELD_DATE </th> <td class="description">Date field</td></tr>
6149 <tr><th>HTTP_FIELD_HOST </th> <td class="description">Host field</td></tr>
6150 <tr><th>HTTP_FIELD_IF_MODIFIED_SINCE </th> <td class="description">If-Modified-Since field</td></tr>
6151 <tr><th>HTTP_FIELD_IF_UNMODIFIED_SINCE </th> <td class="description">If-Unmodified-Since field</td></tr>
6152 <tr><th>HTTP_FIELD_KEEP_ALIVE </th> <td class="description">Keep-Alive field</td></tr>
6153 <tr><th>HTTP_FIELD_LAST_MODIFIED </th> <td class="description">Last-Modified field</td></tr>
6154 <tr><th>HTTP_FIELD_LINK </th> <td class="description">Link field</td></tr>
6155 <tr><th>HTTP_FIELD_LOCATION </th> <td class="description">Location field</td></tr>
6156 <tr><th>HTTP_FIELD_MAX </th> <td class="description">Maximum field index</td></tr>
6157 <tr><th>HTTP_FIELD_RANGE </th> <td class="description">Range field</td></tr>
6158 <tr><th>HTTP_FIELD_REFERER </th> <td class="description">Referer field</td></tr>
6159 <tr><th>HTTP_FIELD_RETRY_AFTER </th> <td class="description">Retry-After field</td></tr>
6160 <tr><th>HTTP_FIELD_SERVER <span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span></th> <td class="description">Server field </td></tr>
6161 <tr><th>HTTP_FIELD_TRANSFER_ENCODING </th> <td class="description">Transfer-Encoding field</td></tr>
6162 <tr><th>HTTP_FIELD_UNKNOWN </th> <td class="description">Unknown field</td></tr>
6163 <tr><th>HTTP_FIELD_UPGRADE </th> <td class="description">Upgrade field</td></tr>
6164 <tr><th>HTTP_FIELD_USER_AGENT </th> <td class="description">User-Agent field</td></tr>
6165 <tr><th>HTTP_FIELD_WWW_AUTHENTICATE </th> <td class="description">WWW-Authenticate field</td></tr>
6166</tbody></table>
798d6e29
MS
6167 <h3 class="enumeration"><a id="http_keepalive_e">http_keepalive_e</a></h3>
6168 <p class="description">HTTP keep-alive values</p>
6169 <h4 class="constants">Constants</h4>
98d88c8d
MS
6170 <table class="list"><tbody>
6171 <tr><th>HTTP_KEEPALIVE_OFF </th> <td class="description">No keep alive support</td></tr>
6172 <tr><th>HTTP_KEEPALIVE_ON </th> <td class="description">Use keep alive</td></tr>
6173</tbody></table>
798d6e29
MS
6174 <h3 class="enumeration"><a id="http_state_e">http_state_e</a></h3>
6175 <p class="description">HTTP state values; states
6176are server-oriented...</p>
6177 <h4 class="constants">Constants</h4>
98d88c8d
MS
6178 <table class="list"><tbody>
6179 <tr><th>HTTP_STATE_CONNECT </th> <td class="description">CONNECT command, waiting for blank line</td></tr>
6180 <tr><th>HTTP_STATE_DELETE </th> <td class="description">DELETE command, waiting for blank line</td></tr>
6181 <tr><th>HTTP_STATE_ERROR </th> <td class="description">Error on socket</td></tr>
6182 <tr><th>HTTP_STATE_GET </th> <td class="description">GET command, waiting for blank line</td></tr>
6183 <tr><th>HTTP_STATE_GET_SEND </th> <td class="description">GET command, sending data</td></tr>
6184 <tr><th>HTTP_STATE_HEAD </th> <td class="description">HEAD command, waiting for blank line</td></tr>
6185 <tr><th>HTTP_STATE_OPTIONS </th> <td class="description">OPTIONS command, waiting for blank line</td></tr>
6186 <tr><th>HTTP_STATE_POST </th> <td class="description">POST command, waiting for blank line</td></tr>
6187 <tr><th>HTTP_STATE_POST_RECV </th> <td class="description">POST command, receiving data</td></tr>
6188 <tr><th>HTTP_STATE_POST_SEND </th> <td class="description">POST command, sending data</td></tr>
6189 <tr><th>HTTP_STATE_PUT </th> <td class="description">PUT command, waiting for blank line</td></tr>
6190 <tr><th>HTTP_STATE_PUT_RECV </th> <td class="description">PUT command, receiving data</td></tr>
6191 <tr><th>HTTP_STATE_STATUS </th> <td class="description">Command complete, sending status</td></tr>
6192 <tr><th>HTTP_STATE_TRACE </th> <td class="description">TRACE command, waiting for blank line</td></tr>
6193 <tr><th>HTTP_STATE_UNKNOWN_METHOD <span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span></th> <td class="description">Unknown request method, waiting for blank line </td></tr>
6194 <tr><th>HTTP_STATE_UNKNOWN_VERSION <span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span></th> <td class="description">Unknown request method, waiting for blank line </td></tr>
6195 <tr><th>HTTP_STATE_WAITING </th> <td class="description">Waiting for command</td></tr>
6196</tbody></table>
798d6e29
MS
6197 <h3 class="enumeration"><a id="http_status_e">http_status_e</a></h3>
6198 <p class="description">HTTP status codes</p>
6199 <h4 class="constants">Constants</h4>
98d88c8d
MS
6200 <table class="list"><tbody>
6201 <tr><th>HTTP_STATUS_ACCEPTED </th> <td class="description">DELETE command was successful</td></tr>
6202 <tr><th>HTTP_STATUS_BAD_GATEWAY </th> <td class="description">Bad gateway</td></tr>
6203 <tr><th>HTTP_STATUS_BAD_REQUEST </th> <td class="description">Bad request</td></tr>
6204 <tr><th>HTTP_STATUS_CONFLICT </th> <td class="description">Request is self-conflicting</td></tr>
6205 <tr><th>HTTP_STATUS_CONTINUE </th> <td class="description">Everything OK, keep going...</td></tr>
6206 <tr><th>HTTP_STATUS_CREATED </th> <td class="description">PUT command was successful</td></tr>
6207 <tr><th>HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED <span class="info">&#160;CUPS 1.4&#160;</span></th> <td class="description">User canceled authorization </td></tr>
6208 <tr><th>HTTP_STATUS_CUPS_PKI_ERROR <span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span></th> <td class="description">Error negotiating a secure connection </td></tr>
6209 <tr><th>HTTP_STATUS_ERROR </th> <td class="description">An error response from httpXxxx()</td></tr>
6210 <tr><th>HTTP_STATUS_EXPECTATION_FAILED </th> <td class="description">The expectation given in an Expect header field was not met</td></tr>
6211 <tr><th>HTTP_STATUS_FORBIDDEN </th> <td class="description">Forbidden to access this URI</td></tr>
699fe020 6212 <tr><th>HTTP_STATUS_FOUND </th> <td class="description">Document was found at a different URI</td></tr>
98d88c8d
MS
6213 <tr><th>HTTP_STATUS_GATEWAY_TIMEOUT </th> <td class="description">Gateway connection timed out</td></tr>
6214 <tr><th>HTTP_STATUS_GONE </th> <td class="description">Server has gone away</td></tr>
6215 <tr><th>HTTP_STATUS_LENGTH_REQUIRED </th> <td class="description">A content length or encoding is required</td></tr>
6216 <tr><th>HTTP_STATUS_METHOD_NOT_ALLOWED </th> <td class="description">Method is not allowed</td></tr>
6217 <tr><th>HTTP_STATUS_MOVED_PERMANENTLY </th> <td class="description">Document has moved permanently</td></tr>
98d88c8d
MS
6218 <tr><th>HTTP_STATUS_MULTIPLE_CHOICES </th> <td class="description">Multiple files match request</td></tr>
6219 <tr><th>HTTP_STATUS_NONE <span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span></th> <td class="description">No Expect value </td></tr>
6220 <tr><th>HTTP_STATUS_NOT_ACCEPTABLE </th> <td class="description">Not Acceptable</td></tr>
6221 <tr><th>HTTP_STATUS_NOT_AUTHORITATIVE </th> <td class="description">Information isn't authoritative</td></tr>
6222 <tr><th>HTTP_STATUS_NOT_FOUND </th> <td class="description">URI was not found</td></tr>
6223 <tr><th>HTTP_STATUS_NOT_IMPLEMENTED </th> <td class="description">Feature not implemented</td></tr>
6224 <tr><th>HTTP_STATUS_NOT_MODIFIED </th> <td class="description">File not modified</td></tr>
6225 <tr><th>HTTP_STATUS_NOT_SUPPORTED </th> <td class="description">HTTP version not supported</td></tr>
6226 <tr><th>HTTP_STATUS_NO_CONTENT </th> <td class="description">Successful command, no new data</td></tr>
6227 <tr><th>HTTP_STATUS_OK </th> <td class="description">OPTIONS/GET/HEAD/POST/TRACE command was successful</td></tr>
6228 <tr><th>HTTP_STATUS_PARTIAL_CONTENT </th> <td class="description">Only a partial file was received/sent</td></tr>
6229 <tr><th>HTTP_STATUS_PAYMENT_REQUIRED </th> <td class="description">Payment required</td></tr>
6230 <tr><th>HTTP_STATUS_PRECONDITION </th> <td class="description">Precondition failed</td></tr>
6231 <tr><th>HTTP_STATUS_PROXY_AUTHENTICATION </th> <td class="description">Proxy Authentication is Required</td></tr>
6232 <tr><th>HTTP_STATUS_REQUESTED_RANGE </th> <td class="description">The requested range is not satisfiable</td></tr>
6233 <tr><th>HTTP_STATUS_REQUEST_TIMEOUT </th> <td class="description">Request timed out</td></tr>
6234 <tr><th>HTTP_STATUS_REQUEST_TOO_LARGE </th> <td class="description">Request entity too large</td></tr>
6235 <tr><th>HTTP_STATUS_RESET_CONTENT </th> <td class="description">Content was reset/recreated</td></tr>
699fe020 6236 <tr><th>HTTP_STATUS_SEE_OTHER </th> <td class="description">See this other link</td></tr>
98d88c8d
MS
6237 <tr><th>HTTP_STATUS_SERVER_ERROR </th> <td class="description">Internal server error</td></tr>
6238 <tr><th>HTTP_STATUS_SERVICE_UNAVAILABLE </th> <td class="description">Service is unavailable</td></tr>
6239 <tr><th>HTTP_STATUS_SWITCHING_PROTOCOLS </th> <td class="description">HTTP upgrade to TLS/SSL</td></tr>
699fe020 6240 <tr><th>HTTP_STATUS_TEMPORARY_REDIRECT </th> <td class="description">Temporary redirection</td></tr>
98d88c8d
MS
6241 <tr><th>HTTP_STATUS_UNAUTHORIZED </th> <td class="description">Unauthorized to access host</td></tr>
6242 <tr><th>HTTP_STATUS_UNSUPPORTED_MEDIATYPE </th> <td class="description">The requested media type is unsupported</td></tr>
6243 <tr><th>HTTP_STATUS_UPGRADE_REQUIRED </th> <td class="description">Upgrade to SSL/TLS required</td></tr>
6244 <tr><th>HTTP_STATUS_URI_TOO_LONG </th> <td class="description">URI too long</td></tr>
6245 <tr><th>HTTP_STATUS_USE_PROXY </th> <td class="description">Must use a proxy to access this URI</td></tr>
6246</tbody></table>
798d6e29
MS
6247 <h3 class="enumeration"><a id="http_trust_e"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span>http_trust_e</a></h3>
6248 <p class="description">Level of trust for credentials </p>
6249 <h4 class="constants">Constants</h4>
98d88c8d
MS
6250 <table class="list"><tbody>
6251 <tr><th>HTTP_TRUST_CHANGED </th> <td class="description">Credentials have changed</td></tr>
6252 <tr><th>HTTP_TRUST_EXPIRED </th> <td class="description">Credentials are expired</td></tr>
6253 <tr><th>HTTP_TRUST_INVALID </th> <td class="description">Credentials are invalid</td></tr>
6254 <tr><th>HTTP_TRUST_OK </th> <td class="description">Credentials are OK/trusted</td></tr>
6255 <tr><th>HTTP_TRUST_RENEWED </th> <td class="description">Credentials have been renewed</td></tr>
6256 <tr><th>HTTP_TRUST_UNKNOWN </th> <td class="description">Credentials are unknown/new</td></tr>
6257</tbody></table>
798d6e29
MS
6258 <h3 class="enumeration"><a id="http_uri_coding_e">http_uri_coding_e</a></h3>
6259 <p class="description">URI en/decode flags</p>
6260 <h4 class="constants">Constants</h4>
98d88c8d
MS
6261 <table class="list"><tbody>
6262 <tr><th>HTTP_URI_CODING_ALL </th> <td class="description">En/decode everything</td></tr>
6263 <tr><th>HTTP_URI_CODING_HOSTNAME </th> <td class="description">En/decode the hostname portion</td></tr>
6264 <tr><th>HTTP_URI_CODING_MOST </th> <td class="description">En/decode all but the query</td></tr>
6265 <tr><th>HTTP_URI_CODING_NONE </th> <td class="description">Don't en/decode anything</td></tr>
6266 <tr><th>HTTP_URI_CODING_QUERY </th> <td class="description">En/decode the query portion</td></tr>
6267 <tr><th>HTTP_URI_CODING_RESOURCE </th> <td class="description">En/decode the resource portion</td></tr>
6268 <tr><th>HTTP_URI_CODING_RFC6874 </th> <td class="description">Use RFC 6874 address format</td></tr>
6269 <tr><th>HTTP_URI_CODING_USERNAME </th> <td class="description">En/decode the username portion</td></tr>
6270</tbody></table>
798d6e29
MS
6271 <h3 class="enumeration"><a id="http_uri_status_e"><span class="info">&#160;CUPS 1.2&#160;</span>http_uri_status_e</a></h3>
6272 <p class="description">URI separation status </p>
6273 <h4 class="constants">Constants</h4>
98d88c8d
MS
6274 <table class="list"><tbody>
6275 <tr><th>HTTP_URI_STATUS_BAD_ARGUMENTS </th> <td class="description">Bad arguments to function (error)</td></tr>
6276 <tr><th>HTTP_URI_STATUS_BAD_HOSTNAME </th> <td class="description">Bad hostname in URI (error)</td></tr>
6277 <tr><th>HTTP_URI_STATUS_BAD_PORT </th> <td class="description">Bad port number in URI (error)</td></tr>
6278 <tr><th>HTTP_URI_STATUS_BAD_RESOURCE </th> <td class="description">Bad resource in URI (error)</td></tr>
6279 <tr><th>HTTP_URI_STATUS_BAD_SCHEME </th> <td class="description">Bad scheme in URI (error)</td></tr>
6280 <tr><th>HTTP_URI_STATUS_BAD_URI </th> <td class="description">Bad/empty URI (error)</td></tr>
6281 <tr><th>HTTP_URI_STATUS_BAD_USERNAME </th> <td class="description">Bad username in URI (error)</td></tr>
6282 <tr><th>HTTP_URI_STATUS_MISSING_RESOURCE </th> <td class="description">Missing resource in URI (warning)</td></tr>
6283 <tr><th>HTTP_URI_STATUS_MISSING_SCHEME </th> <td class="description">Missing scheme in URI (warning)</td></tr>
6284 <tr><th>HTTP_URI_STATUS_OK </th> <td class="description">URI decoded OK</td></tr>
6285 <tr><th>HTTP_URI_STATUS_OVERFLOW </th> <td class="description">URI buffer for httpAssembleURI is too small</td></tr>
6286 <tr><th>HTTP_URI_STATUS_UNKNOWN_SCHEME </th> <td class="description">Unknown scheme in URI (warning)</td></tr>
6287</tbody></table>
798d6e29 6288 <h3 class="enumeration"><a id="ipp_finishings_e">ipp_finishings_e</a></h3>
718ee2ff 6289 <p class="description">Finishings values</p>
798d6e29 6290 <h4 class="constants">Constants</h4>
98d88c8d
MS
6291 <table class="list"><tbody>
6292 <tr><th>IPP_FINISHINGS_BALE </th> <td class="description">Bale (any type)</td></tr>
6293 <tr><th>IPP_FINISHINGS_BIND </th> <td class="description">Bind</td></tr>
6294 <tr><th>IPP_FINISHINGS_BIND_BOTTOM </th> <td class="description">Bind on bottom</td></tr>
6295 <tr><th>IPP_FINISHINGS_BIND_LEFT </th> <td class="description">Bind on left</td></tr>
6296 <tr><th>IPP_FINISHINGS_BIND_RIGHT </th> <td class="description">Bind on right</td></tr>
6297 <tr><th>IPP_FINISHINGS_BIND_TOP </th> <td class="description">Bind on top</td></tr>
6298 <tr><th>IPP_FINISHINGS_BOOKLET_MAKER </th> <td class="description">Fold to make booklet</td></tr>
6299 <tr><th>IPP_FINISHINGS_COAT </th> <td class="description">Apply protective liquid or powder coating</td></tr>
6300 <tr><th>IPP_FINISHINGS_COVER </th> <td class="description">Add cover</td></tr>
6301 <tr><th>IPP_FINISHINGS_EDGE_STITCH </th> <td class="description">Stitch along any side</td></tr>
6302 <tr><th>IPP_FINISHINGS_EDGE_STITCH_BOTTOM </th> <td class="description">Stitch along bottom edge</td></tr>
6303 <tr><th>IPP_FINISHINGS_EDGE_STITCH_LEFT </th> <td class="description">Stitch along left side</td></tr>
6304 <tr><th>IPP_FINISHINGS_EDGE_STITCH_RIGHT </th> <td class="description">Stitch along right side</td></tr>
6305 <tr><th>IPP_FINISHINGS_EDGE_STITCH_TOP </th> <td class="description">Stitch along top edge</td></tr>
6306 <tr><th>IPP_FINISHINGS_FOLD </th> <td class="description">Fold (any type)</td></tr>
6307 <tr><th>IPP_FINISHINGS_FOLD_ACCORDIAN </th> <td class="description">Accordian-fold the paper vertically into four sections</td></tr>
6308 <tr><th>IPP_FINISHINGS_FOLD_DOUBLE_GATE </th> <td class="description">Fold the top and bottom quarters of the paper towards the midline, then fold in half vertically</td></tr>
6309 <tr><th>IPP_FINISHINGS_FOLD_ENGINEERING_Z </th> <td class="description">Fold the paper vertically into two small sections and one larger, forming an elongated Z</td></tr>
6310 <tr><th>IPP_FINISHINGS_FOLD_GATE </th> <td class="description">Fold the top and bottom quarters of the paper towards the midline</td></tr>
6311 <tr><th>IPP_FINISHINGS_FOLD_HALF </th> <td class="description">Fold the paper in half vertically</td></tr>
6312 <tr><th>IPP_FINISHINGS_FOLD_HALF_Z </th> <td class="description">Fold the paper in half horizontally, then Z-fold the paper vertically</td></tr>
6313 <tr><th>IPP_FINISHINGS_FOLD_LEFT_GATE </th> <td class="description">Fold the top quarter of the paper towards the midline</td></tr>
6314 <tr><th>IPP_FINISHINGS_FOLD_LETTER </th> <td class="description">Fold the paper into three sections vertically; sometimes also known as a C fold</td></tr>
6315 <tr><th>IPP_FINISHINGS_FOLD_PARALLEL </th> <td class="description">Fold the paper in half vertically two times, yielding four sections</td></tr>
6316 <tr><th>IPP_FINISHINGS_FOLD_POSTER </th> <td class="description">Fold the paper in half horizontally and vertically; sometimes also called a cross fold</td></tr>
6317 <tr><th>IPP_FINISHINGS_FOLD_RIGHT_GATE </th> <td class="description">Fold the bottom quarter of the paper towards the midline</td></tr>
6318 <tr><th>IPP_FINISHINGS_FOLD_Z </th> <td class="description">Fold the paper vertically into three sections, forming a Z</td></tr>
6319 <tr><th>IPP_FINISHINGS_JOG_OFFSET </th> <td class="description">Offset for binding (any type)</td></tr>
6320 <tr><th>IPP_FINISHINGS_LAMINATE </th> <td class="description">Apply protective (solid) material</td></tr>
6321 <tr><th>IPP_FINISHINGS_NONE </th> <td class="description">No finishing</td></tr>
6322 <tr><th>IPP_FINISHINGS_PUNCH </th> <td class="description">Punch (any location/count)</td></tr>
6323 <tr><th>IPP_FINISHINGS_PUNCH_BOTTOM_LEFT </th> <td class="description">Punch 1 hole bottom left</td></tr>
6324 <tr><th>IPP_FINISHINGS_PUNCH_BOTTOM_RIGHT </th> <td class="description">Punch 1 hole bottom right</td></tr>
6325 <tr><th>IPP_FINISHINGS_PUNCH_DUAL_BOTTOM </th> <td class="description">Punch 2 holes bottom edge</td></tr>
6326 <tr><th>IPP_FINISHINGS_PUNCH_DUAL_LEFT </th> <td class="description">Punch 2 holes left side</td></tr>
6327 <tr><th>IPP_FINISHINGS_PUNCH_DUAL_RIGHT </th> <td class="description">Punch 2 holes right side</td></tr>
6328 <tr><th>IPP_FINISHINGS_PUNCH_DUAL_TOP </th> <td class="description">Punch 2 holes top edge</td></tr>
6329 <tr><th>IPP_FINISHINGS_PUNCH_MULTIPLE_BOTTOM </th> <td class="description">Pucnh multiple holes bottom edge</td></tr>
6330 <tr><th>IPP_FINISHINGS_PUNCH_MULTIPLE_LEFT </th> <td class="description">Pucnh multiple holes left side</td></tr>
6331 <tr><th>IPP_FINISHINGS_PUNCH_MULTIPLE_RIGHT </th> <td class="description">Pucnh multiple holes right side</td></tr>
6332 <tr><th>IPP_FINISHINGS_PUNCH_MULTIPLE_TOP </th> <td class="description">Pucnh multiple holes top edge</td></tr>
6333 <tr><th>IPP_FINISHINGS_PUNCH_QUAD_BOTTOM </th> <td class="description">Punch 4 holes bottom edge</td></tr>
6334 <tr><th>IPP_FINISHINGS_PUNCH_QUAD_LEFT </th> <td class="description">Punch 4 holes left side</td></tr>
6335 <tr><th>IPP_FINISHINGS_PUNCH_QUAD_RIGHT </th> <td class="description">Punch 4 holes right side</td></tr>
6336 <tr><th>IPP_FINISHINGS_PUNCH_QUAD_TOP </th> <td class="description">Punch 4 holes top edge</td></tr>
6337 <tr><th>IPP_FINISHINGS_PUNCH_TOP_LEFT </th> <td class="description">Punch 1 hole top left</td></tr>
6338 <tr><th>IPP_FINISHINGS_PUNCH_TOP_RIGHT </th> <td class="description">Punch 1 hole top right</td></tr>
6339 <tr><th>IPP_FINISHINGS_PUNCH_TRIPLE_BOTTOM </th> <td class="description">Punch 3 holes bottom edge</td></tr>
6340 <tr><th>IPP_FINISHINGS_PUNCH_TRIPLE_LEFT </th> <td class="description">Punch 3 holes left side</td></tr>
6341 <tr><th>IPP_FINISHINGS_PUNCH_TRIPLE_RIGHT </th> <td class="description">Punch 3 holes right side</td></tr>
6342 <tr><th>IPP_FINISHINGS_PUNCH_TRIPLE_TOP </th> <td class="description">Punch 3 holes top edge</td></tr>
6343 <tr><th>IPP_FINISHINGS_SADDLE_STITCH </th> <td class="description">Staple interior</td></tr>
6344 <tr><th>IPP_FINISHINGS_STAPLE </th> <td class="description">Staple (any location/method)</td></tr>
6345 <tr><th>IPP_FINISHINGS_STAPLE_BOTTOM_LEFT </th> <td class="description">Staple bottom left corner</td></tr>
6346 <tr><th>IPP_FINISHINGS_STAPLE_BOTTOM_RIGHT </th> <td class="description">Staple bottom right corner</td></tr>
6347 <tr><th>IPP_FINISHINGS_STAPLE_DUAL_BOTTOM </th> <td class="description">Two staples on bottom</td></tr>
6348 <tr><th>IPP_FINISHINGS_STAPLE_DUAL_LEFT </th> <td class="description">Two staples on left</td></tr>
6349 <tr><th>IPP_FINISHINGS_STAPLE_DUAL_RIGHT </th> <td class="description">Two staples on right</td></tr>
6350 <tr><th>IPP_FINISHINGS_STAPLE_DUAL_TOP </th> <td class="description">Two staples on top</td></tr>
6351 <tr><th>IPP_FINISHINGS_STAPLE_TOP_LEFT </th> <td class="description">Staple top left corner</td></tr>
6352 <tr><th>IPP_FINISHINGS_STAPLE_TOP_RIGHT </th> <td class="description">Staple top right corner</td></tr>
6353 <tr><th>IPP_FINISHINGS_STAPLE_TRIPLE_BOTTOM </th> <td class="description">Three staples on bottom</td></tr>
6354 <tr><th>IPP_FINISHINGS_STAPLE_TRIPLE_LEFT </th> <td class="description">Three staples on left</td></tr>
6355 <tr><th>IPP_FINISHINGS_STAPLE_TRIPLE_RIGHT </th> <td class="description">Three staples on right</td></tr>
6356 <tr><th>IPP_FINISHINGS_STAPLE_TRIPLE_TOP </th> <td class="description">Three staples on top</td></tr>
6357 <tr><th>IPP_FINISHINGS_TRIM </th> <td class="description">Trim (any type)</td></tr>
6358 <tr><th>IPP_FINISHINGS_TRIM_AFTER_COPIES </th> <td class="description">Trim output after each copy</td></tr>
6359 <tr><th>IPP_FINISHINGS_TRIM_AFTER_DOCUMENTS </th> <td class="description">Trim output after each document</td></tr>
6360 <tr><th>IPP_FINISHINGS_TRIM_AFTER_JOB </th> <td class="description">Trim output after job</td></tr>
6361 <tr><th>IPP_FINISHINGS_TRIM_AFTER_PAGES </th> <td class="description">Trim output after each page</td></tr>
6362</tbody></table>
798d6e29
MS
6363 <h3 class="enumeration"><a id="ipp_jstate_e">ipp_jstate_e</a></h3>
6364 <p class="description">Job states</p>
6365 <h4 class="constants">Constants</h4>
98d88c8d
MS
6366 <table class="list"><tbody>
6367 <tr><th>IPP_JSTATE_ABORTED </th> <td class="description">Job has aborted due to error</td></tr>
6368 <tr><th>IPP_JSTATE_CANCELED </th> <td class="description">Job has been canceled</td></tr>
6369 <tr><th>IPP_JSTATE_COMPLETED </th> <td class="description">Job has completed successfully</td></tr>
6370 <tr><th>IPP_JSTATE_HELD </th> <td class="description">Job is held for printing</td></tr>
6371 <tr><th>IPP_JSTATE_PENDING </th> <td class="description">Job is waiting to be printed</td></tr>
6372 <tr><th>IPP_JSTATE_PROCESSING </th> <td class="description">Job is currently printing</td></tr>
6373 <tr><th>IPP_JSTATE_STOPPED </th> <td class="description">Job has been stopped</td></tr>
6374</tbody></table>
798d6e29
MS
6375 <h3 class="enumeration"><a id="ipp_op_e">ipp_op_e</a></h3>
6376 <p class="description">IPP operations</p>
6377 <h4 class="constants">Constants</h4>
98d88c8d 6378 <table class="list"><tbody>
4f63d6cd 6379 <tr><th>IPP_OP_ALLOCATE_PRINTER_RESOURCES </th> <td class="description">Allocate-Printer-Resources: Use resources for a printer.</td></tr>
98d88c8d
MS
6380 <tr><th>IPP_OP_CANCEL_CURRENT_JOB </th> <td class="description">Cancel-Current-Job: Cancel the current job</td></tr>
6381 <tr><th>IPP_OP_CANCEL_JOB </th> <td class="description">Cancel-Job: Cancel a job</td></tr>
6382 <tr><th>IPP_OP_CANCEL_JOBS </th> <td class="description">Cancel-Jobs: Cancel all jobs (administrative)</td></tr>
6383 <tr><th>IPP_OP_CANCEL_MY_JOBS </th> <td class="description">Cancel-My-Jobs: Cancel a user's jobs</td></tr>
4f63d6cd 6384 <tr><th>IPP_OP_CANCEL_RESOURCE </th> <td class="description">Cancel-Resource: Uninstall a resource.</td></tr>
98d88c8d
MS
6385 <tr><th>IPP_OP_CANCEL_SUBSCRIPTION <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Cancel-Subscription: Cancel a subscription </td></tr>
6386 <tr><th>IPP_OP_CLOSE_JOB </th> <td class="description">Close-Job: Close a job and start printing</td></tr>
6387 <tr><th>IPP_OP_CREATE_JOB </th> <td class="description">Create-Job: Create an empty print job</td></tr>
6388 <tr><th>IPP_OP_CREATE_JOB_SUBSCRIPTIONS <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Create-Job-Subscriptions: Create one of more job subscriptions </td></tr>
4f63d6cd 6389 <tr><th>IPP_OP_CREATE_PRINTER </th> <td class="description">Create-Printer: Create a new service.</td></tr>
98d88c8d 6390 <tr><th>IPP_OP_CREATE_PRINTER_SUBSCRIPTIONS <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Create-Printer-Subscriptions: Create one or more printer subscriptions </td></tr>
4f63d6cd
MS
6391 <tr><th>IPP_OP_CREATE_RESOURCE </th> <td class="description">Create-Resource: Create a new (empty) resource.</td></tr>
6392 <tr><th>IPP_OP_CREATE_RESOURCE_SUBSCRIPTIONS </th> <td class="description">Create-Resource-Subscriptions: Create event subscriptions for a resource.</td></tr>
6393 <tr><th>IPP_OP_CREATE_SYSTEM_SUBSCRIPTIONS </th> <td class="description">Create-System-Subscriptions: Create event subscriptions for a system.</td></tr>
98d88c8d
MS
6394 <tr><th>IPP_OP_CUPS_ADD_MODIFY_CLASS </th> <td class="description">CUPS-Add-Modify-Class: Add or modify a class</td></tr>
6395 <tr><th>IPP_OP_CUPS_ADD_MODIFY_PRINTER </th> <td class="description">CUPS-Add-Modify-Printer: Add or modify a printer</td></tr>
6396 <tr><th>IPP_OP_CUPS_AUTHENTICATE_JOB <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">CUPS-Authenticate-Job: Authenticate a job </td></tr>
6397 <tr><th>IPP_OP_CUPS_CREATE_LOCAL_PRINTER <span class="info">&#160;CUPS 2.2&#160;</span></th> <td class="description">CUPS-Create-Local-Printer: Create a local (temporary) printer </td></tr>
6398 <tr><th>IPP_OP_CUPS_DELETE_CLASS </th> <td class="description">CUPS-Delete-Class: Delete a class</td></tr>
6399 <tr><th>IPP_OP_CUPS_DELETE_PRINTER </th> <td class="description">CUPS-Delete-Printer: Delete a printer</td></tr>
6400 <tr><th>IPP_OP_CUPS_GET_DEFAULT </th> <td class="description">CUPS-Get-Default: Get the default printer</td></tr>
6401 <tr><th>IPP_OP_CUPS_GET_DEVICES <span class="info">&#160;DEPRECATED&#160;</span></th> <td class="description">CUPS-Get-Devices: Get a list of supported devices </td></tr>
6402 <tr><th>IPP_OP_CUPS_GET_DOCUMENT <span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span></th> <td class="description">CUPS-Get-Document: Get a document file </td></tr>
6403 <tr><th>IPP_OP_CUPS_GET_PPD <span class="info">&#160;DEPRECATED&#160;</span></th> <td class="description">CUPS-Get-PPD: Get a PPD file </td></tr>
6404 <tr><th>IPP_OP_CUPS_GET_PPDS <span class="info">&#160;DEPRECATED&#160;</span></th> <td class="description">CUPS-Get-PPDs: Get a list of supported drivers </td></tr>
6405 <tr><th>IPP_OP_CUPS_GET_PRINTERS </th> <td class="description">CUPS-Get-Printers: Get a list of printers and/or classes</td></tr>
6406 <tr><th>IPP_OP_CUPS_INVALID </th> <td class="description">Invalid operation name for <a href="#ippOpValue"><code>ippOpValue</code></a></td></tr>
6407 <tr><th>IPP_OP_CUPS_MOVE_JOB </th> <td class="description">CUPS-Move-Job: Move a job to a different printer</td></tr>
6408 <tr><th>IPP_OP_CUPS_SET_DEFAULT </th> <td class="description">CUPS-Set-Default: Set the default printer</td></tr>
4f63d6cd
MS
6409 <tr><th>IPP_OP_DEALLOCATE_PRINTER_RESOURCES </th> <td class="description">Deallocate-Printer-Resources: Stop using resources for a printer.</td></tr>
6410 <tr><th>IPP_OP_DELETE_PRINTER </th> <td class="description">Delete-Printer: Delete an existing service.</td></tr>
6411 <tr><th>IPP_OP_DISABLE_ALL_PRINTERS </th> <td class="description">Disable-All-Printers: Stop accepting new jobs on all services.</td></tr>
98d88c8d 6412 <tr><th>IPP_OP_DISABLE_PRINTER </th> <td class="description">Disable-Printer: Reject new jobs for a printer</td></tr>
4f63d6cd 6413 <tr><th>IPP_OP_ENABLE_ALL_PRINTERS </th> <td class="description">Enable-All-Printers: Start accepting new jobs on all services.</td></tr>
98d88c8d
MS
6414 <tr><th>IPP_OP_ENABLE_PRINTER </th> <td class="description">Enable-Printer: Accept new jobs for a printer</td></tr>
6415 <tr><th>IPP_OP_GET_JOBS </th> <td class="description">Get-Jobs: Get a list of jobs</td></tr>
6416 <tr><th>IPP_OP_GET_JOB_ATTRIBUTES </th> <td class="description">Get-Job-Attribute: Get information about a job</td></tr>
6417 <tr><th>IPP_OP_GET_NOTIFICATIONS <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Get-Notifications: Get notification events </td></tr>
4f63d6cd 6418 <tr><th>IPP_OP_GET_PRINTERS </th> <td class="description">Get-Printers: Get a list of services.</td></tr>
98d88c8d
MS
6419 <tr><th>IPP_OP_GET_PRINTER_ATTRIBUTES </th> <td class="description">Get-Printer-Attributes: Get information about a printer</td></tr>
6420 <tr><th>IPP_OP_GET_PRINTER_SUPPORTED_VALUES </th> <td class="description">Get-Printer-Supported-Values: Get supported values</td></tr>
6421 <tr><th>IPP_OP_GET_SUBSCRIPTIONS <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Get-Subscriptions: Get list of subscriptions </td></tr>
6422 <tr><th>IPP_OP_GET_SUBSCRIPTION_ATTRIBUTES <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Get-Subscription-Attributes: Get subscription information </td></tr>
4f63d6cd
MS
6423 <tr><th>IPP_OP_GET_SYSTEM_ATTRIBUTES </th> <td class="description">Get-System-Attributes: Get system object attributes.</td></tr>
6424 <tr><th>IPP_OP_GET_SYSTEM_SUPPORTED_VALUES </th> <td class="description">Get-System-Supported-Values: Get supported values for system object attributes.</td></tr>
98d88c8d
MS
6425 <tr><th>IPP_OP_HOLD_JOB </th> <td class="description">Hold-Job: Hold a job for printing</td></tr>
6426 <tr><th>IPP_OP_HOLD_NEW_JOBS </th> <td class="description">Hold-New-Jobs: Hold new jobs</td></tr>
6427 <tr><th>IPP_OP_IDENTIFY_PRINTER </th> <td class="description">Identify-Printer: Make the printer beep, flash, or display a message for identification</td></tr>
4f63d6cd
MS
6428 <tr><th>IPP_OP_INSTALL_RESOURCE </th> <td class="description">Install-Resource: Install a resource.</td></tr>
6429 <tr><th>IPP_OP_PAUSE_ALL_PRINTERS </th> <td class="description">Pause-All-Printers: Stop all services immediately.</td></tr>
6430 <tr><th>IPP_OP_PAUSE_ALL_PRINTERS_AFTER_CURRENT_JOB </th> <td class="description">Pause-All-Printers-After-Current-Job: Stop all services after processing the current jobs.</td></tr>
98d88c8d
MS
6431 <tr><th>IPP_OP_PAUSE_PRINTER </th> <td class="description">Pause-Printer: Stop a printer</td></tr>
6432 <tr><th>IPP_OP_PAUSE_PRINTER_AFTER_CURRENT_JOB </th> <td class="description">Pause-Printer-After-Current-Job: Stop printer after the current job</td></tr>
6433 <tr><th>IPP_OP_PRINT_JOB </th> <td class="description">Print-Job: Print a single file</td></tr>
6434 <tr><th>IPP_OP_PROMOTE_JOB </th> <td class="description">Promote-Job: Promote a job to print sooner</td></tr>
4f63d6cd 6435 <tr><th>IPP_OP_REGISTER_OUTPUT_DEVICE </th> <td class="description">Register-Output-Device: Register a remote service.</td></tr>
98d88c8d
MS
6436 <tr><th>IPP_OP_RELEASE_HELD_NEW_JOBS </th> <td class="description">Release-Held-New-Jobs: Release new jobs that were previously held</td></tr>
6437 <tr><th>IPP_OP_RELEASE_JOB </th> <td class="description">Release-Job: Release a job for printing</td></tr>
6438 <tr><th>IPP_OP_RENEW_SUBSCRIPTION <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Renew-Subscription: Renew a printer subscription </td></tr>
6439 <tr><th>IPP_OP_RESTART_JOB <span class="info">&#160;DEPRECATED&#160;</span></th> <td class="description">Restart-Job: Reprint a job </td></tr>
4f63d6cd
MS
6440 <tr><th>IPP_OP_RESTART_SYSTEM </th> <td class="description">Restart-System: Restart all services.</td></tr>
6441 <tr><th>IPP_OP_RESUME_ALL_PRINTERS </th> <td class="description">Resume-All-Printers: Start job processing on all services.</td></tr>
98d88c8d
MS
6442 <tr><th>IPP_OP_RESUME_JOB </th> <td class="description">Resume-Job: Resume the current job</td></tr>
6443 <tr><th>IPP_OP_RESUME_PRINTER </th> <td class="description">Resume-Printer: Start a printer</td></tr>
6444 <tr><th>IPP_OP_SCHEDULE_JOB_AFTER </th> <td class="description">Schedule-Job-After: Schedule a job to print after another</td></tr>
6445 <tr><th>IPP_OP_SEND_DOCUMENT </th> <td class="description">Send-Document: Add a file to a job</td></tr>
4f63d6cd 6446 <tr><th>IPP_OP_SEND_RESOURCE_DATA </th> <td class="description">Send-Resource-Data: Upload the data for a resource.</td></tr>
98d88c8d
MS
6447 <tr><th>IPP_OP_SET_JOB_ATTRIBUTES </th> <td class="description">Set-Job-Attributes: Set job values</td></tr>
6448 <tr><th>IPP_OP_SET_PRINTER_ATTRIBUTES </th> <td class="description">Set-Printer-Attributes: Set printer values</td></tr>
4f63d6cd
MS
6449 <tr><th>IPP_OP_SET_RESOURCE_ATTRIBUTES </th> <td class="description">Set-Resource-Attributes: Set resource object attributes.</td></tr>
6450 <tr><th>IPP_OP_SET_SYSTEM_ATTRIBUTES </th> <td class="description">Set-System-Attributes: Set system object attributes.</td></tr>
6451 <tr><th>IPP_OP_SHUTDOWN_ALL_PRINTERS </th> <td class="description">Shutdown-All-Printers: Shutdown all services.</td></tr>
6452 <tr><th>IPP_OP_SHUTDOWN_ONE_PRINTER </th> <td class="description">Shutdown-One-Printer: Shutdown a service.</td></tr>
6453 <tr><th>IPP_OP_STARTUP_ALL_PRINTERS </th> <td class="description">Startup-All-Printers: Startup all services.</td></tr>
6454 <tr><th>IPP_OP_STARTUP_ONE_PRINTER </th> <td class="description">Startup-One-Printer: Start a service.</td></tr>
98d88c8d
MS
6455 <tr><th>IPP_OP_SUSPEND_CURRENT_JOB </th> <td class="description">Suspend-Current-Job: Suspend the current job</td></tr>
6456 <tr><th>IPP_OP_VALIDATE_JOB </th> <td class="description">Validate-Job: Validate job values prior to submission</td></tr>
6457</tbody></table>
798d6e29
MS
6458 <h3 class="enumeration"><a id="ipp_orient_e">ipp_orient_e</a></h3>
6459 <p class="description">Orientation values</p>
6460 <h4 class="constants">Constants</h4>
98d88c8d
MS
6461 <table class="list"><tbody>
6462 <tr><th>IPP_ORIENT_LANDSCAPE </th> <td class="description">90 degrees counter-clockwise</td></tr>
6463 <tr><th>IPP_ORIENT_NONE </th> <td class="description">No rotation</td></tr>
6464 <tr><th>IPP_ORIENT_PORTRAIT </th> <td class="description">No rotation</td></tr>
6465 <tr><th>IPP_ORIENT_REVERSE_LANDSCAPE </th> <td class="description">90 degrees clockwise</td></tr>
6466 <tr><th>IPP_ORIENT_REVERSE_PORTRAIT </th> <td class="description">180 degrees</td></tr>
6467</tbody></table>
798d6e29 6468 <h3 class="enumeration"><a id="ipp_pstate_e">ipp_pstate_e</a></h3>
65bebeac 6469 <p class="description">Printer state values</p>
798d6e29 6470 <h4 class="constants">Constants</h4>
98d88c8d
MS
6471 <table class="list"><tbody>
6472 <tr><th>IPP_PSTATE_IDLE </th> <td class="description">Printer is idle</td></tr>
6473 <tr><th>IPP_PSTATE_PROCESSING </th> <td class="description">Printer is working</td></tr>
6474 <tr><th>IPP_PSTATE_STOPPED </th> <td class="description">Printer is stopped</td></tr>
6475</tbody></table>
798d6e29 6476 <h3 class="enumeration"><a id="ipp_quality_e">ipp_quality_e</a></h3>
65bebeac 6477 <p class="description">Print quality values</p>
798d6e29 6478 <h4 class="constants">Constants</h4>
98d88c8d
MS
6479 <table class="list"><tbody>
6480 <tr><th>IPP_QUALITY_DRAFT </th> <td class="description">Draft quality</td></tr>
6481 <tr><th>IPP_QUALITY_HIGH </th> <td class="description">High quality</td></tr>
6482 <tr><th>IPP_QUALITY_NORMAL </th> <td class="description">Normal quality</td></tr>
6483</tbody></table>
798d6e29
MS
6484 <h3 class="enumeration"><a id="ipp_res_e">ipp_res_e</a></h3>
6485 <p class="description">Resolution units</p>
6486 <h4 class="constants">Constants</h4>
98d88c8d
MS
6487 <table class="list"><tbody>
6488 <tr><th>IPP_RES_PER_CM </th> <td class="description">Pixels per centimeter</td></tr>
6489 <tr><th>IPP_RES_PER_INCH </th> <td class="description">Pixels per inch</td></tr>
06a5a4d3
MS
6490</tbody></table>
6491 <h3 class="enumeration"><a id="ipp_rstate_e">ipp_rstate_e</a></h3>
6492 <p class="description">resource-state values</p>
6493 <h4 class="constants">Constants</h4>
6494 <table class="list"><tbody>
6495 <tr><th>IPP_RSTATE_ABORTED </th> <td class="description">Resource has been aborted and is pending deletion.</td></tr>
6496 <tr><th>IPP_RSTATE_AVAILABLE </th> <td class="description">Resource is available for installation.</td></tr>
6497 <tr><th>IPP_RSTATE_CANCELED </th> <td class="description">Resource has been canceled and is pending deletion.</td></tr>
6498 <tr><th>IPP_RSTATE_INSTALLED </th> <td class="description">Resource is installed.</td></tr>
6499 <tr><th>IPP_RSTATE_PENDING </th> <td class="description">Resource is created but has no data yet.</td></tr>
6500</tbody></table>
6501 <h3 class="enumeration"><a id="ipp_sstate_e">ipp_sstate_e</a></h3>
6502 <p class="description">system-state values</p>
6503 <h4 class="constants">Constants</h4>
6504 <table class="list"><tbody>
6505 <tr><th>IPP_SSTATE_IDLE </th> <td class="description">At least one printer is idle and none are processing a job.</td></tr>
6506 <tr><th>IPP_SSTATE_PROCESSING </th> <td class="description">At least one printer is processing a job.</td></tr>
6507 <tr><th>IPP_SSTATE_STOPPED </th> <td class="description">All printers are stopped.</td></tr>
98d88c8d 6508</tbody></table>
798d6e29 6509 <h3 class="enumeration"><a id="ipp_state_e">ipp_state_e</a></h3>
65bebeac 6510 <p class="description">ipp_t state values</p>
798d6e29 6511 <h4 class="constants">Constants</h4>
98d88c8d
MS
6512 <table class="list"><tbody>
6513 <tr><th>IPP_STATE_ATTRIBUTE </th> <td class="description">One or more attributes need to be sent/received</td></tr>
6514 <tr><th>IPP_STATE_DATA </th> <td class="description">IPP request data needs to be sent/received</td></tr>
6515 <tr><th>IPP_STATE_ERROR </th> <td class="description">An error occurred</td></tr>
6516 <tr><th>IPP_STATE_HEADER </th> <td class="description">The request header needs to be sent/received</td></tr>
6517 <tr><th>IPP_STATE_IDLE </th> <td class="description">Nothing is happening/request completed</td></tr>
6518</tbody></table>
798d6e29 6519 <h3 class="enumeration"><a id="ipp_status_e">ipp_status_e</a></h3>
65bebeac 6520 <p class="description">IPP status code values</p>
798d6e29 6521 <h4 class="constants">Constants</h4>
98d88c8d
MS
6522 <table class="list"><tbody>
6523 <tr><th>IPP_STATUS_CUPS_INVALID </th> <td class="description">Invalid status name for <a href="#ippErrorValue"><code>ippErrorValue</code></a></td></tr>
6524 <tr><th>IPP_STATUS_ERROR_ACCOUNT_AUTHORIZATION_FAILED </th> <td class="description">client-error-account-authorization-failed</td></tr>
6525 <tr><th>IPP_STATUS_ERROR_ACCOUNT_CLOSED </th> <td class="description">client-error-account-closed</td></tr>
6526 <tr><th>IPP_STATUS_ERROR_ACCOUNT_INFO_NEEDED </th> <td class="description">client-error-account-info-needed</td></tr>
6527 <tr><th>IPP_STATUS_ERROR_ACCOUNT_LIMIT_REACHED </th> <td class="description">client-error-account-limit-reached</td></tr>
6528 <tr><th>IPP_STATUS_ERROR_ATTRIBUTES_NOT_SETTABLE </th> <td class="description">client-error-attributes-not-settable</td></tr>
6529 <tr><th>IPP_STATUS_ERROR_ATTRIBUTES_OR_VALUES </th> <td class="description">client-error-attributes-or-values-not-supported</td></tr>
6530 <tr><th>IPP_STATUS_ERROR_BAD_REQUEST </th> <td class="description">client-error-bad-request</td></tr>
6531 <tr><th>IPP_STATUS_ERROR_BUSY </th> <td class="description">server-error-busy</td></tr>
6532 <tr><th>IPP_STATUS_ERROR_CHARSET </th> <td class="description">client-error-charset-not-supported</td></tr>
6533 <tr><th>IPP_STATUS_ERROR_COMPRESSION_ERROR </th> <td class="description">client-error-compression-error</td></tr>
6534 <tr><th>IPP_STATUS_ERROR_COMPRESSION_NOT_SUPPORTED </th> <td class="description">client-error-compression-not-supported</td></tr>
6535 <tr><th>IPP_STATUS_ERROR_CONFLICTING </th> <td class="description">client-error-conflicting-attributes</td></tr>
6536 <tr><th>IPP_STATUS_ERROR_CUPS_ACCOUNT_AUTHORIZATION_FAILED <span class="info">&#160;DEPRECATED&#160;</span></th> <td class="description">cups-error-account-authorization-failed </td></tr>
6537 <tr><th>IPP_STATUS_ERROR_CUPS_ACCOUNT_CLOSED </th> <td class="description">cups-error-account-closed @deprecate@</td></tr>
6538 <tr><th>IPP_STATUS_ERROR_CUPS_ACCOUNT_INFO_NEEDED <span class="info">&#160;DEPRECATED&#160;</span></th> <td class="description">cups-error-account-info-needed </td></tr>
6539 <tr><th>IPP_STATUS_ERROR_CUPS_ACCOUNT_LIMIT_REACHED <span class="info">&#160;DEPRECATED&#160;</span></th> <td class="description">cups-error-account-limit-reached </td></tr>
6540 <tr><th>IPP_STATUS_ERROR_CUPS_AUTHENTICATION_CANCELED <span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span></th> <td class="description">cups-authentication-canceled - Authentication canceled by user </td></tr>
6541 <tr><th>IPP_STATUS_ERROR_CUPS_PKI <span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span></th> <td class="description">cups-pki-error - Error negotiating a secure connection </td></tr>
6542 <tr><th>IPP_STATUS_ERROR_CUPS_UPGRADE_REQUIRED <span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span></th> <td class="description">cups-upgrade-required - TLS upgrade required </td></tr>
6543 <tr><th>IPP_STATUS_ERROR_DEVICE </th> <td class="description">server-error-device-error</td></tr>
6544 <tr><th>IPP_STATUS_ERROR_DOCUMENT_ACCESS </th> <td class="description">client-error-document-access-error</td></tr>
6545 <tr><th>IPP_STATUS_ERROR_DOCUMENT_FORMAT_ERROR </th> <td class="description">client-error-document-format-error</td></tr>
6546 <tr><th>IPP_STATUS_ERROR_DOCUMENT_FORMAT_NOT_SUPPORTED </th> <td class="description">client-error-document-format-not-supported</td></tr>
6547 <tr><th>IPP_STATUS_ERROR_DOCUMENT_PASSWORD </th> <td class="description">client-error-document-password-error</td></tr>
6548 <tr><th>IPP_STATUS_ERROR_DOCUMENT_PERMISSION </th> <td class="description">client-error-document-permission-error</td></tr>
6549 <tr><th>IPP_STATUS_ERROR_DOCUMENT_SECURITY </th> <td class="description">client-error-document-security-error</td></tr>
6550 <tr><th>IPP_STATUS_ERROR_DOCUMENT_UNPRINTABLE </th> <td class="description">client-error-document-unprintable-error</td></tr>
6551 <tr><th>IPP_STATUS_ERROR_FORBIDDEN </th> <td class="description">client-error-forbidden</td></tr>
6552 <tr><th>IPP_STATUS_ERROR_GONE </th> <td class="description">client-error-gone</td></tr>
6553 <tr><th>IPP_STATUS_ERROR_IGNORED_ALL_SUBSCRIPTIONS </th> <td class="description">client-error-ignored-all-subscriptions</td></tr>
6554 <tr><th>IPP_STATUS_ERROR_INTERNAL </th> <td class="description">server-error-internal-error</td></tr>
6555 <tr><th>IPP_STATUS_ERROR_JOB_CANCELED </th> <td class="description">server-error-job-canceled</td></tr>
6556 <tr><th>IPP_STATUS_ERROR_MULTIPLE_JOBS_NOT_SUPPORTED </th> <td class="description">server-error-multiple-document-jobs-not-supported</td></tr>
6557 <tr><th>IPP_STATUS_ERROR_NOT_ACCEPTING_JOBS </th> <td class="description">server-error-not-accepting-jobs</td></tr>
6558 <tr><th>IPP_STATUS_ERROR_NOT_AUTHENTICATED </th> <td class="description">client-error-not-authenticated</td></tr>
6559 <tr><th>IPP_STATUS_ERROR_NOT_AUTHORIZED </th> <td class="description">client-error-not-authorized</td></tr>
6560 <tr><th>IPP_STATUS_ERROR_NOT_FETCHABLE </th> <td class="description">client-error-not-fetchable</td></tr>
6561 <tr><th>IPP_STATUS_ERROR_NOT_FOUND </th> <td class="description">client-error-not-found</td></tr>
6562 <tr><th>IPP_STATUS_ERROR_NOT_POSSIBLE </th> <td class="description">client-error-not-possible</td></tr>
6563 <tr><th>IPP_STATUS_ERROR_OPERATION_NOT_SUPPORTED </th> <td class="description">server-error-operation-not-supported</td></tr>
6564 <tr><th>IPP_STATUS_ERROR_PRINTER_IS_DEACTIVATED </th> <td class="description">server-error-printer-is-deactivated</td></tr>
6565 <tr><th>IPP_STATUS_ERROR_REQUEST_ENTITY </th> <td class="description">client-error-request-entity-too-large</td></tr>
6566 <tr><th>IPP_STATUS_ERROR_REQUEST_VALUE </th> <td class="description">client-error-request-value-too-long</td></tr>
6567 <tr><th>IPP_STATUS_ERROR_SERVICE_UNAVAILABLE </th> <td class="description">server-error-service-unavailable</td></tr>
6568 <tr><th>IPP_STATUS_ERROR_TEMPORARY </th> <td class="description">server-error-temporary-error</td></tr>
6569 <tr><th>IPP_STATUS_ERROR_TIMEOUT </th> <td class="description">client-error-timeout</td></tr>
6570 <tr><th>IPP_STATUS_ERROR_TOO_MANY_DOCUMENTS </th> <td class="description">server-error-too-many-documents</td></tr>
6571 <tr><th>IPP_STATUS_ERROR_TOO_MANY_JOBS </th> <td class="description">server-error-too-many-jobs</td></tr>
6572 <tr><th>IPP_STATUS_ERROR_TOO_MANY_SUBSCRIPTIONS </th> <td class="description">client-error-too-many-subscriptions</td></tr>
6573 <tr><th>IPP_STATUS_ERROR_URI_SCHEME </th> <td class="description">client-error-uri-scheme-not-supported</td></tr>
6574 <tr><th>IPP_STATUS_ERROR_VERSION_NOT_SUPPORTED </th> <td class="description">server-error-version-not-supported</td></tr>
6575 <tr><th>IPP_STATUS_OK </th> <td class="description">successful-ok</td></tr>
6576 <tr><th>IPP_STATUS_OK_CONFLICTING </th> <td class="description">successful-ok-conflicting-attributes</td></tr>
6577 <tr><th>IPP_STATUS_OK_EVENTS_COMPLETE </th> <td class="description">successful-ok-events-complete</td></tr>
6578 <tr><th>IPP_STATUS_OK_IGNORED_OR_SUBSTITUTED </th> <td class="description">successful-ok-ignored-or-substituted-attributes</td></tr>
6579 <tr><th>IPP_STATUS_OK_IGNORED_SUBSCRIPTIONS </th> <td class="description">successful-ok-ignored-subscriptions</td></tr>
6580 <tr><th>IPP_STATUS_OK_TOO_MANY_EVENTS </th> <td class="description">successful-ok-too-many-events</td></tr>
6581</tbody></table>
798d6e29 6582 <h3 class="enumeration"><a id="ipp_tag_e">ipp_tag_e</a></h3>
65bebeac 6583 <p class="description">Value and group tag values for attributes</p>
798d6e29 6584 <h4 class="constants">Constants</h4>
98d88c8d
MS
6585 <table class="list"><tbody>
6586 <tr><th>IPP_TAG_ADMINDEFINE </th> <td class="description">Admin-defined value</td></tr>
6587 <tr><th>IPP_TAG_BOOLEAN </th> <td class="description">Boolean value</td></tr>
6588 <tr><th>IPP_TAG_CHARSET </th> <td class="description">Character set value</td></tr>
6589 <tr><th>IPP_TAG_CUPS_INVALID </th> <td class="description">Invalid tag name for <a href="#ippTagValue"><code>ippTagValue</code></a></td></tr>
6590 <tr><th>IPP_TAG_DATE </th> <td class="description">Date/time value</td></tr>
6591 <tr><th>IPP_TAG_DEFAULT </th> <td class="description">Default value</td></tr>
6592 <tr><th>IPP_TAG_DELETEATTR </th> <td class="description">Delete-attribute value</td></tr>
4f63d6cd 6593 <tr><th>IPP_TAG_DOCUMENT </th> <td class="description">Document group</td></tr>
98d88c8d
MS
6594 <tr><th>IPP_TAG_END </th> <td class="description">End-of-attributes</td></tr>
6595 <tr><th>IPP_TAG_ENUM </th> <td class="description">Enumeration value</td></tr>
6596 <tr><th>IPP_TAG_EVENT_NOTIFICATION </th> <td class="description">Event group</td></tr>
6597 <tr><th>IPP_TAG_INTEGER </th> <td class="description">Integer value</td></tr>
6598 <tr><th>IPP_TAG_JOB </th> <td class="description">Job group</td></tr>
6599 <tr><th>IPP_TAG_KEYWORD </th> <td class="description">Keyword value</td></tr>
6600 <tr><th>IPP_TAG_LANGUAGE </th> <td class="description">Language value</td></tr>
6601 <tr><th>IPP_TAG_MIMETYPE </th> <td class="description">MIME media type value</td></tr>
6602 <tr><th>IPP_TAG_NAME </th> <td class="description">Name value</td></tr>
6603 <tr><th>IPP_TAG_NAMELANG </th> <td class="description">Name-with-language value</td></tr>
6604 <tr><th>IPP_TAG_NOTSETTABLE </th> <td class="description">Not-settable value</td></tr>
6605 <tr><th>IPP_TAG_NOVALUE </th> <td class="description">No-value value</td></tr>
6606 <tr><th>IPP_TAG_OPERATION </th> <td class="description">Operation group</td></tr>
6607 <tr><th>IPP_TAG_PRINTER </th> <td class="description">Printer group</td></tr>
6608 <tr><th>IPP_TAG_RANGE </th> <td class="description">Range value</td></tr>
6609 <tr><th>IPP_TAG_RESOLUTION </th> <td class="description">Resolution value</td></tr>
4f63d6cd 6610 <tr><th>IPP_TAG_RESOURCE </th> <td class="description">Resource group</td></tr>
98d88c8d
MS
6611 <tr><th>IPP_TAG_STRING </th> <td class="description">Octet string value</td></tr>
6612 <tr><th>IPP_TAG_SUBSCRIPTION </th> <td class="description">Subscription group</td></tr>
4f63d6cd 6613 <tr><th>IPP_TAG_SYSTEM </th> <td class="description">System group</td></tr>
98d88c8d
MS
6614 <tr><th>IPP_TAG_TEXT </th> <td class="description">Text value</td></tr>
6615 <tr><th>IPP_TAG_TEXTLANG </th> <td class="description">Text-with-language value</td></tr>
6616 <tr><th>IPP_TAG_UNKNOWN </th> <td class="description">Unknown value</td></tr>
6617 <tr><th>IPP_TAG_UNSUPPORTED_GROUP </th> <td class="description">Unsupported attributes group</td></tr>
6618 <tr><th>IPP_TAG_UNSUPPORTED_VALUE </th> <td class="description">Unsupported value</td></tr>
6619 <tr><th>IPP_TAG_URI </th> <td class="description">URI value</td></tr>
6620 <tr><th>IPP_TAG_URISCHEME </th> <td class="description">URI scheme value</td></tr>
6621 <tr><th>IPP_TAG_ZERO </th> <td class="description">Zero tag - used for separators</td></tr>
6622</tbody></table>
798d6e29
MS
6623 </div>
6624 </body>
6625</html>