]> git.ipfire.org Git - thirdparty/cups.git/blame - doc/help/cupspm.html
Merge pull request #5621 from zdohnal/cgigetarray-sigsegv
[thirdparty/cups.git] / doc / help / cupspm.html
CommitLineData
73721e3e 1<!DOCTYPE html>
798d6e29
MS
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">
93d79201 8 <meta name="creator" content="codedoc v3.2">
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.">
ddf2ec73 11 <meta name="version" content="2.3.0">
798d6e29 12 <style type="text/css"><!--
93d79201 13body, p, h1, h2, h3, h4, h5, h6 {
798d6e29 14 font-family: sans-serif;
93d79201 15 line-height: 1.4;
798d6e29 16}
93d79201 17h1, h2, h3, h4, h5, h6 {
798d6e29 18 font-weight: bold;
93d79201
MS
19 page-break-inside: avoid;
20}
21h1 {
22 font-size: 250%;
798d6e29
MS
23 margin: 0;
24}
93d79201 25h2 {
798d6e29
MS
26 font-size: 250%;
27 margin-top: 1.5em;
28}
93d79201
MS
29h3 {
30 font-size: 200%;
798d6e29
MS
31 margin-bottom: 0.5em;
32 margin-top: 1.5em;
33}
93d79201
MS
34h4 {
35 font-size: 150%;
798d6e29
MS
36 margin-bottom: 0.5em;
37 margin-top: 1.5em;
38}
93d79201
MS
39h5 {
40 font-size: 125%;
798d6e29
MS
41 margin-bottom: 0.5em;
42 margin-top: 1.5em;
43}
93d79201 44h6 {
798d6e29 45 font-size: 110%;
93d79201
MS
46 margin-bottom: 0.5em;
47 margin-top: 1.5em;
798d6e29 48}
93d79201
MS
49div.header h1, div.header p {
50 text-align: center;
798d6e29 51}
93d79201
MS
52div.contents, div.body, div.footer {
53 page-break-before: always;
798d6e29 54}
93d79201 55.class, .enumeration, .function, .struct, .typedef, .union {
798d6e29
MS
56 border-bottom: solid 2px gray;
57}
798d6e29
MS
58.description {
59 margin-top: 0.5em;
60}
798d6e29 61.function {
798d6e29
MS
62 margin-bottom: 0;
63}
798d6e29
MS
64blockquote {
65 border: solid thin gray;
66 box-shadow: 3px 3px 5px rgba(0,0,0,0.5);
67 padding: 0px 10px;
68 page-break-inside: avoid;
69}
70p code, li code, p.code, pre, ul.code li {
798d6e29 71 font-family: monospace;
798d6e29
MS
72 hyphens: manual;
73 -webkit-hyphens: manual;
798d6e29
MS
74}
75p.code, pre, ul.code li {
93d79201
MS
76 background: rgba(127,127,127,0.1);
77 border: thin dotted gray;
798d6e29 78 padding: 10px;
93d79201 79 page-break-inside: avoid;
798d6e29
MS
80}
81a:link, a:visited {
82 text-decoration: none;
83}
84span.info {
85 background: black;
86 border: solid thin black;
87 color: white;
88 font-size: 80%;
89 font-style: italic;
90 font-weight: bold;
91 white-space: nowrap;
92}
93d79201 93h1 span.info, h2 span.info, h3 span.info, h4 span.info {
98d88c8d
MS
94 border-top-left-radius: 10px;
95 border-top-right-radius: 10px;
798d6e29 96 float: right;
98d88c8d 97 padding: 3px 6px;
798d6e29
MS
98}
99ul.code, ul.contents, ul.subcontents {
100 list-style-type: none;
101 margin: 0;
102 padding-left: 0;
103}
104ul.code li {
105 margin: 0;
106}
107ul.contents > li {
108 margin-top: 1em;
109}
110ul.contents li ul.code, ul.contents li ul.subcontents {
111 padding-left: 2em;
112}
93d79201
MS
113table {
114 border-collapse: collapse;
115 border-spacing: 0;
116}
117td {
118 border: solid 1px #666;
119 padding: 5px 10px;
120 vertical-align: top;
121}
122td.left {
123 text-align: left;
124}
125td.center {
126 text-align: center;
127}
128td.right {
129 text-align: right;
130}
131th {
132 border-bottom: solid 2px #000;
133 padding: 1px 5px;
134 text-align: center;
135 vertical-align: bottom;
136}
137tr:nth-child(even) {
138 background: rgba(127,127,127,0.1);n}
98d88c8d
MS
139table.list {
140 border-collapse: collapse;
141 width: 100%;
798d6e29 142}
98d88c8d 143table.list th {
93d79201 144 border-bottom: none;
98d88c8d
MS
145 border-right: 2px solid gray;
146 font-family: monospace;
147 padding: 5px 10px 5px 2px;
148 text-align: right;
149 vertical-align: top;
798d6e29 150}
98d88c8d 151table.list td {
93d79201 152 border: none;
98d88c8d
MS
153 padding: 5px 2px 5px 10px;
154 text-align: left;
155 vertical-align: top;
798d6e29 156}
93d79201 157h2.title, h3.title {
798d6e29
MS
158 border-bottom: solid 2px black;
159}
160--></style>
161 </head>
162 <body>
93d79201
MS
163 <div class="header">
164 <h1 class="title">CUPS Programming Manual</h1>
165 <p>Michael R Sweet</p>
166 <p>Copyright &#xa9; 2007-2019 by Apple Inc. All Rights Reserved.</p>
167 </div>
798d6e29
MS
168 <div class="contents">
169 <h2 class="title">Contents</h2>
170 <ul class="contents">
53af7f21
MS
171 <li><a href="#introduction">Introduction</a><ul class="subcontents">
172 <li><a href="#guidelines">Guidelines</a></li>
173 <li><a href="#terms-used-in-this-document">Terms Used in This Document</a></li>
174 <li><a href="#compiling-programs-that-use-the-cups-api">Compiling Programs That Use the CUPS API</a></li>
798d6e29 175 </ul></li>
53af7f21
MS
176 <li><a href="#working-with-destinations">Working with Destinations</a><ul class="subcontents">
177 <li><a href="#finding-available-destinations">Finding Available Destinations</a></li>
178 <li><a href="#basic-destination-information">Basic Destination Information</a></li>
179 <li><a href="#detailed-destination-information">Detailed Destination Information</a></li>
180 <li><a href="#submitting-a-print-job">Submitting a Print Job</a></li>
798d6e29 181 </ul></li>
b0fb2d75
MS
182 <li><a href="#sending-ipp-requests">Sending IPP Requests</a><ul class="subcontents">
183 <li><a href="#connecting-to-the-scheduler-or-printer">Connecting to the Scheduler or Printer</a></li>
184 <li><a href="#creating-an-ipp-request">Creating an IPP Request</a></li>
185 <li><a href="#sending-the-ipp-request">Sending the IPP Request</a></li>
186 <li><a href="#processing-the-ipp-response">Processing the IPP Response</a></li>
187 <li><a href="#authentication">Authentication</a></li>
188 </ul></li>
798d6e29
MS
189 <li><a href="#FUNCTIONS">Functions</a><ul class="subcontents">
190 <li><a href="#cupsAddDest">cupsAddDest</a></li>
63b75fbe 191 <li><a href="#cupsAddDestMediaOptions">cupsAddDestMediaOptions</a></li>
53af7f21 192 <li><a href="#cupsAddIntegerOption">cupsAddIntegerOption</a></li>
798d6e29 193 <li><a href="#cupsAddOption">cupsAddOption</a></li>
798d6e29 194 <li><a href="#cupsCancelDestJob">cupsCancelDestJob</a></li>
798d6e29
MS
195 <li><a href="#cupsCheckDestSupported">cupsCheckDestSupported</a></li>
196 <li><a href="#cupsCloseDestJob">cupsCloseDestJob</a></li>
197 <li><a href="#cupsConnectDest">cupsConnectDest</a></li>
798d6e29
MS
198 <li><a href="#cupsCopyDest">cupsCopyDest</a></li>
199 <li><a href="#cupsCopyDestConflicts">cupsCopyDestConflicts</a></li>
200 <li><a href="#cupsCopyDestInfo">cupsCopyDestInfo</a></li>
201 <li><a href="#cupsCreateDestJob">cupsCreateDestJob</a></li>
798d6e29 202 <li><a href="#cupsDoAuthentication">cupsDoAuthentication</a></li>
ddf2ec73 203 <li><a href="#cupsEncodeOption">cupsEncodeOption</a></li>
798d6e29
MS
204 <li><a href="#cupsEncodeOptions">cupsEncodeOptions</a></li>
205 <li><a href="#cupsEncodeOptions2">cupsEncodeOptions2</a></li>
206 <li><a href="#cupsEncryption">cupsEncryption</a></li>
207 <li><a href="#cupsEnumDests">cupsEnumDests</a></li>
798d6e29
MS
208 <li><a href="#cupsFindDestDefault">cupsFindDestDefault</a></li>
209 <li><a href="#cupsFindDestReady">cupsFindDestReady</a></li>
210 <li><a href="#cupsFindDestSupported">cupsFindDestSupported</a></li>
211 <li><a href="#cupsFinishDestDocument">cupsFinishDestDocument</a></li>
798d6e29
MS
212 <li><a href="#cupsFreeDestInfo">cupsFreeDestInfo</a></li>
213 <li><a href="#cupsFreeDests">cupsFreeDests</a></li>
214 <li><a href="#cupsFreeJobs">cupsFreeJobs</a></li>
215 <li><a href="#cupsFreeOptions">cupsFreeOptions</a></li>
798d6e29
MS
216 <li><a href="#cupsGetDest">cupsGetDest</a></li>
217 <li><a href="#cupsGetDestMediaByIndex">cupsGetDestMediaByIndex</a></li>
218 <li><a href="#cupsGetDestMediaByName">cupsGetDestMediaByName</a></li>
219 <li><a href="#cupsGetDestMediaBySize">cupsGetDestMediaBySize</a></li>
220 <li><a href="#cupsGetDestMediaCount">cupsGetDestMediaCount</a></li>
221 <li><a href="#cupsGetDestMediaDefault">cupsGetDestMediaDefault</a></li>
222 <li><a href="#cupsGetDestWithURI">cupsGetDestWithURI</a></li>
98d88c8d 223 <li><a href="#cupsGetDests2">cupsGetDests2</a></li>
53af7f21 224 <li><a href="#cupsGetIntegerOption">cupsGetIntegerOption</a></li>
798d6e29
MS
225 <li><a href="#cupsGetJobs2">cupsGetJobs2</a></li>
226 <li><a href="#cupsGetNamedDest">cupsGetNamedDest</a></li>
227 <li><a href="#cupsGetOption">cupsGetOption</a></li>
798d6e29 228 <li><a href="#cupsGetPassword2">cupsGetPassword2</a></li>
798d6e29
MS
229 <li><a href="#cupsLocalizeDestMedia">cupsLocalizeDestMedia</a></li>
230 <li><a href="#cupsLocalizeDestOption">cupsLocalizeDestOption</a></li>
231 <li><a href="#cupsLocalizeDestValue">cupsLocalizeDestValue</a></li>
232 <li><a href="#cupsMakeServerCredentials">cupsMakeServerCredentials</a></li>
798d6e29 233 <li><a href="#cupsParseOptions">cupsParseOptions</a></li>
798d6e29
MS
234 <li><a href="#cupsRemoveDest">cupsRemoveDest</a></li>
235 <li><a href="#cupsRemoveOption">cupsRemoveOption</a></li>
236 <li><a href="#cupsServer">cupsServer</a></li>
237 <li><a href="#cupsSetClientCertCB">cupsSetClientCertCB</a></li>
238 <li><a href="#cupsSetCredentials">cupsSetCredentials</a></li>
239 <li><a href="#cupsSetDefaultDest">cupsSetDefaultDest</a></li>
798d6e29
MS
240 <li><a href="#cupsSetDests2">cupsSetDests2</a></li>
241 <li><a href="#cupsSetEncryption">cupsSetEncryption</a></li>
798d6e29
MS
242 <li><a href="#cupsSetPasswordCB2">cupsSetPasswordCB2</a></li>
243 <li><a href="#cupsSetServer">cupsSetServer</a></li>
244 <li><a href="#cupsSetServerCertCB">cupsSetServerCertCB</a></li>
245 <li><a href="#cupsSetServerCredentials">cupsSetServerCredentials</a></li>
246 <li><a href="#cupsSetUser">cupsSetUser</a></li>
247 <li><a href="#cupsSetUserAgent">cupsSetUserAgent</a></li>
248 <li><a href="#cupsStartDestDocument">cupsStartDestDocument</a></li>
798d6e29
MS
249 <li><a href="#cupsUser">cupsUser</a></li>
250 <li><a href="#cupsUserAgent">cupsUserAgent</a></li>
251 <li><a href="#httpAcceptConnection">httpAcceptConnection</a></li>
252 <li><a href="#httpAddCredential">httpAddCredential</a></li>
253 <li><a href="#httpAddrAny">httpAddrAny</a></li>
254 <li><a href="#httpAddrClose">httpAddrClose</a></li>
798d6e29
MS
255 <li><a href="#httpAddrConnect2">httpAddrConnect2</a></li>
256 <li><a href="#httpAddrCopyList">httpAddrCopyList</a></li>
257 <li><a href="#httpAddrEqual">httpAddrEqual</a></li>
258 <li><a href="#httpAddrFamily">httpAddrFamily</a></li>
259 <li><a href="#httpAddrFreeList">httpAddrFreeList</a></li>
260 <li><a href="#httpAddrGetList">httpAddrGetList</a></li>
261 <li><a href="#httpAddrLength">httpAddrLength</a></li>
262 <li><a href="#httpAddrListen">httpAddrListen</a></li>
263 <li><a href="#httpAddrLocalhost">httpAddrLocalhost</a></li>
264 <li><a href="#httpAddrLookup">httpAddrLookup</a></li>
265 <li><a href="#httpAddrPort">httpAddrPort</a></li>
266 <li><a href="#httpAddrString">httpAddrString</a></li>
267 <li><a href="#httpAssembleURI">httpAssembleURI</a></li>
268 <li><a href="#httpAssembleURIf">httpAssembleURIf</a></li>
269 <li><a href="#httpAssembleUUID">httpAssembleUUID</a></li>
270 <li><a href="#httpBlocking">httpBlocking</a></li>
271 <li><a href="#httpCheck">httpCheck</a></li>
272 <li><a href="#httpClearCookie">httpClearCookie</a></li>
273 <li><a href="#httpClearFields">httpClearFields</a></li>
274 <li><a href="#httpClose">httpClose</a></li>
275 <li><a href="#httpCompareCredentials">httpCompareCredentials</a></li>
798d6e29 276 <li><a href="#httpConnect2">httpConnect2</a></li>
798d6e29
MS
277 <li><a href="#httpCopyCredentials">httpCopyCredentials</a></li>
278 <li><a href="#httpCredentialsAreValidForName">httpCredentialsAreValidForName</a></li>
279 <li><a href="#httpCredentialsGetExpiration">httpCredentialsGetExpiration</a></li>
280 <li><a href="#httpCredentialsGetTrust">httpCredentialsGetTrust</a></li>
281 <li><a href="#httpCredentialsString">httpCredentialsString</a></li>
798d6e29
MS
282 <li><a href="#httpDecode64_2">httpDecode64_2</a></li>
283 <li><a href="#httpDelete">httpDelete</a></li>
798d6e29
MS
284 <li><a href="#httpEncode64_2">httpEncode64_2</a></li>
285 <li><a href="#httpEncryption">httpEncryption</a></li>
286 <li><a href="#httpError">httpError</a></li>
287 <li><a href="#httpFieldValue">httpFieldValue</a></li>
288 <li><a href="#httpFlush">httpFlush</a></li>
289 <li><a href="#httpFlushWrite">httpFlushWrite</a></li>
290 <li><a href="#httpFreeCredentials">httpFreeCredentials</a></li>
291 <li><a href="#httpGet">httpGet</a></li>
292 <li><a href="#httpGetActivity">httpGetActivity</a></li>
293 <li><a href="#httpGetAddress">httpGetAddress</a></li>
294 <li><a href="#httpGetAuthString">httpGetAuthString</a></li>
295 <li><a href="#httpGetBlocking">httpGetBlocking</a></li>
296 <li><a href="#httpGetContentEncoding">httpGetContentEncoding</a></li>
297 <li><a href="#httpGetCookie">httpGetCookie</a></li>
798d6e29
MS
298 <li><a href="#httpGetDateString2">httpGetDateString2</a></li>
299 <li><a href="#httpGetDateTime">httpGetDateTime</a></li>
300 <li><a href="#httpGetEncryption">httpGetEncryption</a></li>
301 <li><a href="#httpGetExpect">httpGetExpect</a></li>
302 <li><a href="#httpGetFd">httpGetFd</a></li>
303 <li><a href="#httpGetField">httpGetField</a></li>
798d6e29
MS
304 <li><a href="#httpGetHostname">httpGetHostname</a></li>
305 <li><a href="#httpGetKeepAlive">httpGetKeepAlive</a></li>
798d6e29
MS
306 <li><a href="#httpGetLength2">httpGetLength2</a></li>
307 <li><a href="#httpGetPending">httpGetPending</a></li>
308 <li><a href="#httpGetReady">httpGetReady</a></li>
309 <li><a href="#httpGetRemaining">httpGetRemaining</a></li>
310 <li><a href="#httpGetState">httpGetState</a></li>
311 <li><a href="#httpGetStatus">httpGetStatus</a></li>
798d6e29
MS
312 <li><a href="#httpGetSubField2">httpGetSubField2</a></li>
313 <li><a href="#httpGetVersion">httpGetVersion</a></li>
314 <li><a href="#httpGets">httpGets</a></li>
315 <li><a href="#httpHead">httpHead</a></li>
316 <li><a href="#httpInitialize">httpInitialize</a></li>
317 <li><a href="#httpIsChunked">httpIsChunked</a></li>
318 <li><a href="#httpIsEncrypted">httpIsEncrypted</a></li>
319 <li><a href="#httpLoadCredentials">httpLoadCredentials</a></li>
320 <li><a href="#httpOptions">httpOptions</a></li>
321 <li><a href="#httpPeek">httpPeek</a></li>
322 <li><a href="#httpPost">httpPost</a></li>
323 <li><a href="#httpPut">httpPut</a></li>
798d6e29
MS
324 <li><a href="#httpRead2">httpRead2</a></li>
325 <li><a href="#httpReadRequest">httpReadRequest</a></li>
798d6e29
MS
326 <li><a href="#httpReconnect2">httpReconnect2</a></li>
327 <li><a href="#httpResolveHostname">httpResolveHostname</a></li>
328 <li><a href="#httpSaveCredentials">httpSaveCredentials</a></li>
798d6e29
MS
329 <li><a href="#httpSeparateURI">httpSeparateURI</a></li>
330 <li><a href="#httpSetAuthString">httpSetAuthString</a></li>
331 <li><a href="#httpSetCookie">httpSetCookie</a></li>
332 <li><a href="#httpSetCredentials">httpSetCredentials</a></li>
333 <li><a href="#httpSetDefaultField">httpSetDefaultField</a></li>
334 <li><a href="#httpSetExpect">httpSetExpect</a></li>
335 <li><a href="#httpSetField">httpSetField</a></li>
336 <li><a href="#httpSetKeepAlive">httpSetKeepAlive</a></li>
337 <li><a href="#httpSetLength">httpSetLength</a></li>
338 <li><a href="#httpSetTimeout">httpSetTimeout</a></li>
339 <li><a href="#httpShutdown">httpShutdown</a></li>
340 <li><a href="#httpStateString">httpStateString</a></li>
341 <li><a href="#httpStatus">httpStatus</a></li>
798d6e29
MS
342 <li><a href="#httpURIStatusString">httpURIStatusString</a></li>
343 <li><a href="#httpUpdate">httpUpdate</a></li>
344 <li><a href="#httpWait">httpWait</a></li>
798d6e29
MS
345 <li><a href="#httpWrite2">httpWrite2</a></li>
346 <li><a href="#httpWriteResponse">httpWriteResponse</a></li>
347 <li><a href="#ippAddBoolean">ippAddBoolean</a></li>
348 <li><a href="#ippAddBooleans">ippAddBooleans</a></li>
349 <li><a href="#ippAddCollection">ippAddCollection</a></li>
350 <li><a href="#ippAddCollections">ippAddCollections</a></li>
351 <li><a href="#ippAddDate">ippAddDate</a></li>
352 <li><a href="#ippAddInteger">ippAddInteger</a></li>
353 <li><a href="#ippAddIntegers">ippAddIntegers</a></li>
354 <li><a href="#ippAddOctetString">ippAddOctetString</a></li>
355 <li><a href="#ippAddOutOfBand">ippAddOutOfBand</a></li>
356 <li><a href="#ippAddRange">ippAddRange</a></li>
357 <li><a href="#ippAddRanges">ippAddRanges</a></li>
358 <li><a href="#ippAddResolution">ippAddResolution</a></li>
359 <li><a href="#ippAddResolutions">ippAddResolutions</a></li>
360 <li><a href="#ippAddSeparator">ippAddSeparator</a></li>
361 <li><a href="#ippAddString">ippAddString</a></li>
362 <li><a href="#ippAddStringf">ippAddStringf</a></li>
363 <li><a href="#ippAddStringfv">ippAddStringfv</a></li>
364 <li><a href="#ippAddStrings">ippAddStrings</a></li>
365 <li><a href="#ippAttributeString">ippAttributeString</a></li>
366 <li><a href="#ippContainsInteger">ippContainsInteger</a></li>
367 <li><a href="#ippContainsString">ippContainsString</a></li>
368 <li><a href="#ippCopyAttribute">ippCopyAttribute</a></li>
369 <li><a href="#ippCopyAttributes">ippCopyAttributes</a></li>
370 <li><a href="#ippCreateRequestedArray">ippCreateRequestedArray</a></li>
371 <li><a href="#ippDateToTime">ippDateToTime</a></li>
372 <li><a href="#ippDelete">ippDelete</a></li>
373 <li><a href="#ippDeleteAttribute">ippDeleteAttribute</a></li>
374 <li><a href="#ippDeleteValues">ippDeleteValues</a></li>
375 <li><a href="#ippEnumString">ippEnumString</a></li>
376 <li><a href="#ippEnumValue">ippEnumValue</a></li>
377 <li><a href="#ippErrorString">ippErrorString</a></li>
378 <li><a href="#ippErrorValue">ippErrorValue</a></li>
379 <li><a href="#ippFindAttribute">ippFindAttribute</a></li>
380 <li><a href="#ippFindNextAttribute">ippFindNextAttribute</a></li>
381 <li><a href="#ippFirstAttribute">ippFirstAttribute</a></li>
382 <li><a href="#ippGetBoolean">ippGetBoolean</a></li>
383 <li><a href="#ippGetCollection">ippGetCollection</a></li>
384 <li><a href="#ippGetCount">ippGetCount</a></li>
385 <li><a href="#ippGetDate">ippGetDate</a></li>
386 <li><a href="#ippGetGroupTag">ippGetGroupTag</a></li>
387 <li><a href="#ippGetInteger">ippGetInteger</a></li>
388 <li><a href="#ippGetName">ippGetName</a></li>
389 <li><a href="#ippGetOctetString">ippGetOctetString</a></li>
390 <li><a href="#ippGetOperation">ippGetOperation</a></li>
391 <li><a href="#ippGetRange">ippGetRange</a></li>
392 <li><a href="#ippGetRequestId">ippGetRequestId</a></li>
393 <li><a href="#ippGetResolution">ippGetResolution</a></li>
394 <li><a href="#ippGetState">ippGetState</a></li>
395 <li><a href="#ippGetStatusCode">ippGetStatusCode</a></li>
396 <li><a href="#ippGetString">ippGetString</a></li>
397 <li><a href="#ippGetValueTag">ippGetValueTag</a></li>
398 <li><a href="#ippGetVersion">ippGetVersion</a></li>
399 <li><a href="#ippLength">ippLength</a></li>
400 <li><a href="#ippNew">ippNew</a></li>
401 <li><a href="#ippNewRequest">ippNewRequest</a></li>
402 <li><a href="#ippNewResponse">ippNewResponse</a></li>
403 <li><a href="#ippNextAttribute">ippNextAttribute</a></li>
404 <li><a href="#ippOpString">ippOpString</a></li>
405 <li><a href="#ippOpValue">ippOpValue</a></li>
406 <li><a href="#ippPort">ippPort</a></li>
407 <li><a href="#ippRead">ippRead</a></li>
408 <li><a href="#ippReadFile">ippReadFile</a></li>
409 <li><a href="#ippReadIO">ippReadIO</a></li>
410 <li><a href="#ippSetBoolean">ippSetBoolean</a></li>
411 <li><a href="#ippSetCollection">ippSetCollection</a></li>
412 <li><a href="#ippSetDate">ippSetDate</a></li>
413 <li><a href="#ippSetGroupTag">ippSetGroupTag</a></li>
414 <li><a href="#ippSetInteger">ippSetInteger</a></li>
415 <li><a href="#ippSetName">ippSetName</a></li>
416 <li><a href="#ippSetOctetString">ippSetOctetString</a></li>
417 <li><a href="#ippSetOperation">ippSetOperation</a></li>
418 <li><a href="#ippSetPort">ippSetPort</a></li>
419 <li><a href="#ippSetRange">ippSetRange</a></li>
420 <li><a href="#ippSetRequestId">ippSetRequestId</a></li>
421 <li><a href="#ippSetResolution">ippSetResolution</a></li>
422 <li><a href="#ippSetState">ippSetState</a></li>
423 <li><a href="#ippSetStatusCode">ippSetStatusCode</a></li>
424 <li><a href="#ippSetString">ippSetString</a></li>
425 <li><a href="#ippSetStringf">ippSetStringf</a></li>
426 <li><a href="#ippSetStringfv">ippSetStringfv</a></li>
427 <li><a href="#ippSetValueTag">ippSetValueTag</a></li>
428 <li><a href="#ippSetVersion">ippSetVersion</a></li>
429 <li><a href="#ippStateString">ippStateString</a></li>
430 <li><a href="#ippTagString">ippTagString</a></li>
431 <li><a href="#ippTagValue">ippTagValue</a></li>
432 <li><a href="#ippTimeToDate">ippTimeToDate</a></li>
433 <li><a href="#ippValidateAttribute">ippValidateAttribute</a></li>
434 <li><a href="#ippValidateAttributes">ippValidateAttributes</a></li>
435 <li><a href="#ippWrite">ippWrite</a></li>
436 <li><a href="#ippWriteFile">ippWriteFile</a></li>
437 <li><a href="#ippWriteIO">ippWriteIO</a></li>
798d6e29
MS
438 </ul></li>
439 <li><a href="#TYPES">Data Types</a><ul class="subcontents">
798d6e29 440 <li><a href="#cups_client_cert_cb_t">cups_client_cert_cb_t</a></li>
798d6e29
MS
441 <li><a href="#cups_dest_cb_t">cups_dest_cb_t</a></li>
442 <li><a href="#cups_dest_t">cups_dest_t</a></li>
443 <li><a href="#cups_dinfo_t">cups_dinfo_t</a></li>
798d6e29 444 <li><a href="#cups_job_t">cups_job_t</a></li>
798d6e29
MS
445 <li><a href="#cups_option_t">cups_option_t</a></li>
446 <li><a href="#cups_password_cb2_t">cups_password_cb2_t</a></li>
798d6e29
MS
447 <li><a href="#cups_ptype_t">cups_ptype_t</a></li>
448 <li><a href="#cups_server_cert_cb_t">cups_server_cert_cb_t</a></li>
449 <li><a href="#cups_size_t">cups_size_t</a></li>
798d6e29 450 <li><a href="#http_addr_t">http_addr_t</a></li>
798d6e29
MS
451 <li><a href="#http_encoding_t">http_encoding_t</a></li>
452 <li><a href="#http_encryption_t">http_encryption_t</a></li>
453 <li><a href="#http_field_t">http_field_t</a></li>
454 <li><a href="#http_keepalive_t">http_keepalive_t</a></li>
455 <li><a href="#http_state_t">http_state_t</a></li>
456 <li><a href="#http_t">http_t</a></li>
457 <li><a href="#http_timeout_cb_t">http_timeout_cb_t</a></li>
458 <li><a href="#http_trust_t">http_trust_t</a></li>
459 <li><a href="#http_uri_coding_t">http_uri_coding_t</a></li>
460 <li><a href="#http_uri_status_t">http_uri_status_t</a></li>
798d6e29
MS
461 <li><a href="#ipp_attribute_t">ipp_attribute_t</a></li>
462 <li><a href="#ipp_copycb_t">ipp_copycb_t</a></li>
798d6e29 463 <li><a href="#ipp_iocb_t">ipp_iocb_t</a></li>
798d6e29
MS
464 <li><a href="#ipp_orient_t">ipp_orient_t</a></li>
465 <li><a href="#ipp_pstate_t">ipp_pstate_t</a></li>
466 <li><a href="#ipp_quality_t">ipp_quality_t</a></li>
467 <li><a href="#ipp_res_t">ipp_res_t</a></li>
06a5a4d3
MS
468 <li><a href="#ipp_rstate_t">ipp_rstate_t</a></li>
469 <li><a href="#ipp_sstate_t">ipp_sstate_t</a></li>
798d6e29
MS
470 <li><a href="#ipp_state_t">ipp_state_t</a></li>
471 <li><a href="#ipp_t">ipp_t</a></li>
798d6e29
MS
472 </ul></li>
473 <li><a href="#STRUCTURES">Structures</a><ul class="subcontents">
798d6e29
MS
474 <li><a href="#cups_dest_s">cups_dest_s</a></li>
475 <li><a href="#cups_job_s">cups_job_s</a></li>
798d6e29
MS
476 <li><a href="#cups_option_s">cups_option_s</a></li>
477 <li><a href="#cups_size_s">cups_size_s</a></li>
798d6e29 478 </ul></li>
798d6e29 479 <li><a href="#ENUMERATIONS">Enumerations</a><ul class="subcontents">
798d6e29 480 <li><a href="#cups_ptype_e">cups_ptype_e</a></li>
798d6e29
MS
481 <li><a href="#http_encoding_e">http_encoding_e</a></li>
482 <li><a href="#http_encryption_e">http_encryption_e</a></li>
483 <li><a href="#http_field_e">http_field_e</a></li>
484 <li><a href="#http_keepalive_e">http_keepalive_e</a></li>
485 <li><a href="#http_state_e">http_state_e</a></li>
486 <li><a href="#http_status_e">http_status_e</a></li>
487 <li><a href="#http_trust_e">http_trust_e</a></li>
488 <li><a href="#http_uri_coding_e">http_uri_coding_e</a></li>
489 <li><a href="#http_uri_status_e">http_uri_status_e</a></li>
798d6e29 490 <li><a href="#ipp_finishings_e">ipp_finishings_e</a></li>
798d6e29
MS
491 <li><a href="#ipp_jstate_e">ipp_jstate_e</a></li>
492 <li><a href="#ipp_op_e">ipp_op_e</a></li>
493 <li><a href="#ipp_orient_e">ipp_orient_e</a></li>
494 <li><a href="#ipp_pstate_e">ipp_pstate_e</a></li>
495 <li><a href="#ipp_quality_e">ipp_quality_e</a></li>
496 <li><a href="#ipp_res_e">ipp_res_e</a></li>
06a5a4d3
MS
497 <li><a href="#ipp_rstate_e">ipp_rstate_e</a></li>
498 <li><a href="#ipp_sstate_e">ipp_sstate_e</a></li>
798d6e29
MS
499 <li><a href="#ipp_state_e">ipp_state_e</a></li>
500 <li><a href="#ipp_status_e">ipp_status_e</a></li>
501 <li><a href="#ipp_tag_e">ipp_tag_e</a></li>
502 </ul></li>
503 </ul>
504 </div>
505 <div class="body">
506 <blockquote>
1da024d1 507 <p>Please <a href="https://github.com/apple/cups/issues">file issues on Github</a> to provide feedback on this document.</p>
798d6e29 508</blockquote>
93d79201 509 <h2 class="title" id="introduction">Introduction</h2>
798d6e29
MS
510 <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>
511 <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>
93d79201 512 <h3 class="title" id="guidelines">Guidelines</h3>
73721e3e 513 <p>When writing software (other than printer drivers) that uses the &quot;cups&quot; library:</p>
798d6e29 514 <ul>
93d79201
MS
515 <li> <p>Do not use undocumented or deprecated APIs,</p>
516</li>
517 <li> <p>Do not rely on pre-configured printers,</p>
518</li>
519 <li> <p>Do not assume that printers support specific features or formats, and</p>
520</li>
521 <li> <p>Do not rely on implementation details (PPDs, etc.)</p>
522</li>
798d6e29
MS
523</ul>
524 <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>
525 <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>
73721e3e
MS
526 <blockquote>
527 <p><strong>Note:</strong></p>
528 <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>
529</blockquote>
93d79201
MS
530 <h3 class="title" id="terms-used-in-this-document">Terms Used in This Document</h3>
531 <p>A <em>Destination</em> is a printer or print queue that accepts print jobs. A <em>Print 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>
532 <h3 class="title" id="compiling-programs-that-use-the-cups-api">Compiling Programs That Use the CUPS API</h3>
798d6e29
MS
533 <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>
534 <p>The following simple program lists the available destinations:</p>
535 <pre><code>#include &lt;stdio.h&gt;
536#include &lt;cups/cups.h&gt;
537
538int print_dest(void *user_data, unsigned flags, cups_dest_t *dest)
539{
540 if (dest-&gt;instance)
541 printf(&quot;%s/%s\n&quot;, dest-&gt;name, dest-&gt;instance);
542 else
543 puts(dest-&gt;name);
544
545 return (1);
546}
547
548int main(void)
549{
550 cupsEnumDests(CUPS_DEST_FLAGS_NONE, 1000, NULL, 0, 0, print_dest, NULL);
551
552 return (0);
553}
554</code></pre>
93d79201
MS
555 <h4 id="compiling-with-xcode">Compiling with Xcode</h4>
556 <p>In Xcode, choose <em>New Project...</em> from the <em>File</em> menu (or press SHIFT+CMD+N), then select the <em>Command Line 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>
557 <p>In the project window, click on the <em>Build Phases</em> group and expand the <em>Link Binary with 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 558 <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>
93d79201 559 <h4 id="compiling-with-gcc">Compiling with GCC</h4>
798d6e29
MS
560 <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>
561 <pre><code>gcc -o simple `cups-config --cflags` simple.c `cups-config --libs`
562./simple
563</code></pre>
9c44e2cb 564 <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>
93d79201 565 <h2 class="title" id="working-with-destinations">Working with Destinations</h2>
9c44e2cb 566 <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 567 <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>
93d79201 568 <h3 class="title" id="finding-available-destinations">Finding Available Destinations</h3>
798d6e29
MS
569 <p>The <code>cupsEnumDests</code> function finds all of the available destinations:</p>
570 <pre><code> int
571 cupsEnumDests(unsigned flags, int msec, int *cancel,
572 cups_ptype_t type, cups_ptype_t mask,
573 cups_dest_cb_t cb, void *user_data)
574</code></pre>
575 <p>The <code>flags</code> argument specifies enumeration options, which at present must be <code>CUPS_DEST_FLAGS_NONE</code>.</p>
576 <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>
577 <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 578 <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>
798d6e29 579 <ul>
93d79201
MS
580 <li> <p><code>CUPS_PRINTER_CLASS</code>: A collection of destinations.</p>
581</li>
582 <li> <p><code>CUPS_PRINTER_FAX</code>: A facsimile device.</p>
583</li>
584 <li> <p><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.</p>
585</li>
586 <li> <p><code>CUPS_PRINTER_REMOTE</code>: A remote (shared) printer or class.</p>
587</li>
588 <li> <p><code>CUPS_PRINTER_DISCOVERED</code>: An available network printer or class.</p>
589</li>
590 <li> <p><code>CUPS_PRINTER_BW</code>: Can do B&amp;W printing.</p>
591</li>
592 <li> <p><code>CUPS_PRINTER_COLOR</code>: Can do color printing.</p>
593</li>
594 <li> <p><code>CUPS_PRINTER_DUPLEX</code>: Can do two-sided printing.</p>
595</li>
596 <li> <p><code>CUPS_PRINTER_STAPLE</code>: Can staple output.</p>
597</li>
598 <li> <p><code>CUPS_PRINTER_COLLATE</code>: Can quickly collate copies.</p>
599</li>
600 <li> <p><code>CUPS_PRINTER_PUNCH</code>: Can punch output.</p>
601</li>
602 <li> <p><code>CUPS_PRINTER_COVER</code>: Can cover output.</p>
603</li>
604 <li> <p><code>CUPS_PRINTER_BIND</code>: Can bind output.</p>
605</li>
606 <li> <p><code>CUPS_PRINTER_SORT</code>: Can sort output (mailboxes, etc.)</p>
607</li>
608 <li> <p><code>CUPS_PRINTER_SMALL</code>: Can print on Letter/Legal/A4-size media.</p>
609</li>
610 <li> <p><code>CUPS_PRINTER_MEDIUM</code>: Can print on Tabloid/B/C/A3/A2-size media.</p>
611</li>
612 <li> <p><code>CUPS_PRINTER_LARGE</code>: Can print on D/E/A1/A0-size media.</p>
613</li>
614 <li> <p><code>CUPS_PRINTER_VARIABLE</code>: Can print on rolls and custom-size media.</p>
615</li>
798d6e29
MS
616</ul>
617 <p>The <code>cb</code> argument specifies a function to call for every destination that is found:</p>
618 <pre><code>typedef int (*cups_dest_cb_t)(void *user_data,
619 unsigned flags,
620 cups_dest_t *dest);
621</code></pre>
9c44e2cb 622 <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>
798d6e29 623 <ul>
93d79201
MS
624 <li> <p><code>CUPS_DEST_FLAGS_MORE</code>: There are more destinations coming.</p>
625</li>
626 <li> <p><code>CUPS_DEST_FLAGS_REMOVED</code>: The destination has gone away and should be removed from the list of destinations a user can select.</p>
627</li>
628 <li> <p><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.</p>
629</li>
798d6e29
MS
630</ul>
631 <p>The callback function returns 0 to stop enumeration or 1 to continue.</p>
718ee2ff 632 <blockquote>
73721e3e
MS
633 <p><strong>Note:</strong></p>
634 <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 635</blockquote>
798d6e29
MS
636 <p>The following example shows how to use <code>cupsEnumDests</code> to get a filtered array of destinations:</p>
637 <pre><code>typedef struct
638{
639 int num_dests;
640 cups_dest_t *dests;
641} my_user_data_t;
642
643int
644my_dest_cb(my_user_data_t *user_data, unsigned flags,
645 cups_dest_t *dest)
646{
647 if (flags &amp; CUPS_DEST_FLAGS_REMOVED)
648 {
649 /*
650 * Remove destination from array...
651 */
652
653 user_data-&gt;num_dests =
654 cupsRemoveDest(dest-&gt;name, dest-&gt;instance,
655 user_data-&gt;num_dests,
656 &amp;(user_data-&gt;dests));
657 }
658 else
659 {
660 /*
661 * Add destination to array...
662 */
663
664 user_data-&gt;num_dests =
665 cupsCopyDest(dest, user_data-&gt;num_dests,
666 &amp;(user_data-&gt;dests));
667 }
668
669 return (1);
670}
671
672int
673my_get_dests(cups_ptype_t type, cups_ptype_t mask,
674 cups_dest_t **dests)
675{
676 my_user_data_t user_data = { 0, NULL };
677
678 if (!cupsEnumDests(CUPS_DEST_FLAGS_NONE, 1000, NULL, type,
679 mask, (cups_dest_cb_t)my_dest_cb,
680 &amp;user_data))
681 {
682 /*
683 * An error occurred, free all of the destinations and
684 * return...
685 */
686
687 cupsFreeDests(user_data.num_dests, user_dasta.dests);
688
689 *dests = NULL;
690
691 return (0);
692 }
693
694 /*
695 * Return the destination array...
696 */
697
698 *dests = user_data.dests;
699
700 return (user_data.num_dests);
701}
702</code></pre>
93d79201 703 <h3 class="title" id="basic-destination-information">Basic Destination Information</h3>
798d6e29
MS
704 <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>
705 <ul>
93d79201
MS
706 <li> <p>&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).</p>
707</li>
708 <li> <p>&quot;printer-info&quot;: The human-readable description of the destination such as &quot;My Laser Printer&quot;.</p>
709</li>
710 <li> <p>&quot;printer-is-accepting-jobs&quot;: &quot;true&quot; if the destination is accepting new jobs, &quot;false&quot; otherwise.</p>
711</li>
712 <li> <p>&quot;printer-is-shared&quot;: &quot;true&quot; if the destination is being shared with other computers, &quot;false&quot; otherwise.</p>
713</li>
714 <li> <p>&quot;printer-location&quot;: The human-readable location of the destination such as &quot;Lab 4&quot;.</p>
715</li>
716 <li> <p>&quot;printer-make-and-model&quot;: The human-readable make and model of the destination such as &quot;ExampleCorp LaserPrinter 4000 Series&quot;.</p>
717</li>
718 <li> <p>&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.</p>
719</li>
720 <li> <p>&quot;printer-state-change-time&quot;: The UNIX time when the destination entered the current state.</p>
721</li>
722 <li> <p>&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;.</p>
723</li>
724 <li> <p>&quot;printer-type&quot;: The <code>cups_ptype_t</code> value associated with the destination.</p>
725</li>
726 <li> <p>&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.</p>
727</li>
798d6e29
MS
728</ul>
729 <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>
730 <pre><code>const char *model = cupsGetOption(&quot;printer-make-and-model&quot;,
731 dest-&gt;num_options,
732 dest-&gt;options);
733</code></pre>
93d79201 734 <h3 class="title" id="detailed-destination-information">Detailed Destination Information</h3>
798d6e29
MS
735 <p>Once a destination has been chosen, the <code>cupsCopyDestInfo</code> function can be used to gather detailed information about the destination:</p>
736 <pre><code>cups_dinfo_t *
737cupsCopyDestInfo(http_t *http, cups_dest_t *dest);
738</code></pre>
739 <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>
740 <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>
93d79201 741 <h4 id="getting-supported-options-and-values">Getting Supported Options and Values</h4>
798d6e29
MS
742 <p>The <code>cupsCheckDestSupported</code> function can be used to test whether a particular option or option and value is supported:</p>
743 <pre><code>int
744cupsCheckDestSupported(http_t *http, cups_dest_t *dest,
745 cups_dinfo_t *info,
746 const char *option,
747 const char *value);
748</code></pre>
749 <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>
750 <ul>
93d79201
MS
751 <li> <p><code>CUPS_COPIES</code>: Controls the number of copies that are produced.</p>
752</li>
753 <li> <p><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.</p>
754</li>
755 <li> <p><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>.</p>
756</li>
757 <li> <p><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>.</p>
758</li>
759 <li> <p><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>.</p>
760</li>
761 <li> <p><code>CUPS_NUMBER_UP</code>: Controls the number of document pages that are placed on each media side.</p>
762</li>
763 <li> <p><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>.</p>
764</li>
765 <li> <p><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>).</p>
766</li>
767 <li> <p><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>.</p>
768</li>
769 <li> <p><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>.</p>
770</li>
798d6e29
MS
771</ul>
772 <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>
773 <p>The <code>cupsFindDestSupported</code> function returns the IPP attribute containing the supported values for a given option:</p>
774 <pre><code> ipp_attribute_t *
775 cupsFindDestSupported(http_t *http, cups_dest_t *dest,
776 cups_dinfo_t *dinfo,
777 const char *option);
778</code></pre>
779 <p>For example, the following code prints the supported finishing processes for a destination, if any, to the standard output:</p>
780 <pre><code>cups_dinfo_t *info = cupsCopyDestInfo(CUPS_HTTP_DEFAULT,
781 dest);
782
783if (cupsCheckDestSupported(CUPS_HTTP_DEFAULT, dest, info,
784 CUPS_FINISHINGS, NULL))
785{
786 ipp_attribute_t *finishings =
787 cupsFindDestSupported(CUPS_HTTP_DEFAULT, dest, info,
788 CUPS_FINISHINGS);
789 int i, count = ippGetCount(finishings);
790
791 puts(&quot;finishings supported:&quot;);
792 for (i = 0; i &lt; count; i ++)
793 printf(&quot; %d\n&quot;, ippGetInteger(finishings, i));
794}
795else
796 puts(&quot;finishings not supported.&quot;);
797</code></pre>
798 <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>
799 <pre><code>ipp_attribute_t *attrs =
800 cupsFindDestSupported(CUPS_HTTP_DEFAULT, dest, info,
801 &quot;job-creation-attributes&quot;);
802int i, count = ippGetCount(attrs);
803
804for (i = 0; i &lt; count; i ++)
805 puts(ippGetString(attrs, i, NULL));
806</code></pre>
93d79201 807 <h4 id="getting-default-values">Getting Default Values</h4>
798d6e29
MS
808 <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>
809 <pre><code>ipp_attribute_t *
810cupsFindDestDefault(http_t *http, cups_dest_t *dest,
811 cups_dinfo_t *dinfo,
812 const char *option);
813</code></pre>
814 <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>
815 <pre><code>const char *def_value =
816 cupsGetOption(CUPS_FINISHINGS, dest-&gt;num_options,
817 dest-&gt;options);
818ipp_attribute_t *def_attr =
819 cupsFindDestDefault(CUPS_HTTP_DEFAULT, dest, info,
820 CUPS_FINISHINGS);
821
822if (def_value != NULL)
823{
824 printf(&quot;Default finishings: %s\n&quot;, def_value);
825}
826else
827{
828 int i, count = ippGetCount(def_attr);
829
830 printf(&quot;Default finishings: %d&quot;,
831 ippGetInteger(def_attr, 0));
832 for (i = 1; i &lt; count; i ++)
833 printf(&quot;,%d&quot;, ippGetInteger(def_attr, i));
834 putchar('\n');
835}
836</code></pre>
93d79201 837 <h4 id="getting-ready-loaded-values">Getting Ready (Loaded) Values</h4>
798d6e29
MS
838 <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>
839 <p>The <code>cupsFindDestReady</code> function finds the IPP attribute containing the ready values for a given option:</p>
840 <pre><code>ipp_attribute_t *
841cupsFindDestReady(http_t *http, cups_dest_t *dest,
842 cups_dinfo_t *dinfo, const char *option);
843</code></pre>
844 <p>For example, the following code lists the ready finishing processes:</p>
845 <pre><code>ipp_attribute_t *ready_finishings =
846 cupsFindDestReady(CUPS_HTTP_DEFAULT, dest, info,
847 CUPS_FINISHINGS);
848
849if (ready_finishings != NULL)
850{
851 int i, count = ippGetCount(ready_finishings);
852
853 puts(&quot;finishings ready:&quot;);
854 for (i = 0; i &lt; count; i ++)
855 printf(&quot; %d\n&quot;, ippGetInteger(ready_finishings, i));
856}
857else
858 puts(&quot;no finishings are ready.&quot;);
859</code></pre>
93d79201 860 <h4 id="media-size-options">Media Size Options</h4>
798d6e29
MS
861 <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>
862 <pre><code>typedef struct cups_size_s
863{
864 char media[128];
865 int width, length;
866 int bottom, left, right, top;
867} cups_size_t;
868</code></pre>
869 <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>
870 <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>
871 <pre><code>int
872cupsGetDestMediaByName(http_t *http, cups_dest_t *dest,
873 cups_dinfo_t *dinfo,
874 const char *media,
875 unsigned flags, cups_size_t *size);
876
877int
878cupsGetDestMediaBySize(http_t *http, cups_dest_t *dest,
879 cups_dinfo_t *dinfo,
880 int width, int length,
881 unsigned flags, cups_size_t *size);
882</code></pre>
883 <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>
884 <ul>
93d79201
MS
885 <li> <p><code>CUPS_MEDIA_FLAGS_DEFAULT</code>: Find the closest size supported by the printer.</p>
886</li>
887 <li> <p><code>CUPS_MEDIA_FLAGS_BORDERLESS</code>: Find a borderless size.</p>
888</li>
889 <li> <p><code>CUPS_MEDIA_FLAGS_DUPLEX</code>: Find a size compatible with two-sided printing.</p>
890</li>
891 <li> <p><code>CUPS_MEDIA_FLAGS_EXACT</code>: Find an exact match for the size.</p>
892</li>
893 <li> <p><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.</p>
894</li>
798d6e29
MS
895</ul>
896 <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>
897 <p>For example, the following code prints the margins for two-sided printing on US Letter media:</p>
898 <pre><code>cups_size_t size;
899
900if (cupsGetDestMediaByName(CUPS_HTTP_DEFAULT, dest, info,
901 CUPS_MEDIA_LETTER,
902 CUPS_MEDIA_FLAGS_DUPLEX, &amp;size))
903{
904 puts(&quot;Margins for duplex US Letter:&quot;);
905 printf(&quot; Bottom: %.2fin\n&quot;, size.bottom / 2540.0);
906 printf(&quot; Left: %.2fin\n&quot;, size.left / 2540.0);
907 printf(&quot; Right: %.2fin\n&quot;, size.right / 2540.0);
908 printf(&quot; Top: %.2fin\n&quot;, size.top / 2540.0);
909}
910else
911 puts(&quot;Margins for duplex US Letter are not available.&quot;);
912</code></pre>
913 <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>
914 <pre><code>int
915cupsGetDestMediaByIndex(http_t *http, cups_dest_t *dest,
916 cups_dinfo_t *dinfo, int n,
917 unsigned flags, cups_size_t *size);
918
919int
920cupsGetDestMediaCount(http_t *http, cups_dest_t *dest,
921 cups_dinfo_t *dinfo, unsigned flags);
922</code></pre>
923 <p>For example, the following code prints the list of ready media and corresponding margins:</p>
924 <pre><code>cups_size_t size;
925int i;
926int count = cupsGetDestMediaCount(CUPS_HTTP_DEFAULT,
927 dest, info,
928 CUPS_MEDIA_FLAGS_READY);
929
930for (i = 0; i &lt; count; i ++)
931{
932 if (cupsGetDestMediaByIndex(CUPS_HTTP_DEFAULT, dest, info,
933 i, CUPS_MEDIA_FLAGS_READY,
934 &amp;size))
935 {
936 printf(&quot;%s:\n&quot;, size.name);
937 printf(&quot; Width: %.2fin\n&quot;, size.width / 2540.0);
938 printf(&quot; Length: %.2fin\n&quot;, size.length / 2540.0);
939 printf(&quot; Bottom: %.2fin\n&quot;, size.bottom / 2540.0);
940 printf(&quot; Left: %.2fin\n&quot;, size.left / 2540.0);
941 printf(&quot; Right: %.2fin\n&quot;, size.right / 2540.0);
942 printf(&quot; Top: %.2fin\n&quot;, size.top / 2540.0);
943 }
944}
945</code></pre>
946 <p>Finally, the <code>cupsGetDestMediaDefault</code> function returns the default media size:</p>
947 <pre><code>int
948cupsGetDestMediaDefault(http_t *http, cups_dest_t *dest,
949 cups_dinfo_t *dinfo, unsigned flags,
950 cups_size_t *size);
951</code></pre>
93d79201 952 <h4 id="localizing-options-and-values">Localizing Options and Values</h4>
6ad44eeb 953 <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>
798d6e29
MS
954 <pre><code>const char *
955cupsLocalizeDestMedia(http_t *http, cups_dest_t *dest,
956 cups_dinfo_t *info, unsigned flags,
957 cups_size_t *size);
958
959const char *
960cupsLocalizeDestOption(http_t *http, cups_dest_t *dest,
961 cups_dinfo_t *info,
962 const char *option);
963
964const char *
965cupsLocalizeDestValue(http_t *http, cups_dest_t *dest,
966 cups_dinfo_t *info,
967 const char *option, const char *value);
968</code></pre>
93d79201 969 <h3 class="title" id="submitting-a-print-job">Submitting a Print Job</h3>
798d6e29
MS
970 <p>Once you are ready to submit a print job, you create a job using the <code>cupsCreateDestJob</code> function:</p>
971 <pre><code>ipp_status_t
972cupsCreateDestJob(http_t *http, cups_dest_t *dest,
973 cups_dinfo_t *info, int *job_id,
974 const char *title, int num_options,
975 cups_option_t *options);
976</code></pre>
977 <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>
978 <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>
979 <p>For example, the following code creates a new job that will print 42 copies of a two-sided US Letter document:</p>
980 <pre><code>int job_id = 0;
981int num_options = 0;
982cups_option_t *options = NULL;
983
984num_options = cupsAddOption(CUPS_COPIES, &quot;42&quot;,
985 num_options, &amp;options);
986num_options = cupsAddOption(CUPS_MEDIA, CUPS_MEDIA_LETTER,
987 num_options, &amp;options);
988num_options = cupsAddOption(CUPS_SIDES,
989 CUPS_SIDES_TWO_SIDED_PORTRAIT,
990 num_options, &amp;options);
991
992if (cupsCreateDestJob(CUPS_HTTP_DEFAULT, dest, info,
993 &amp;job_id, &quot;My Document&quot;, num_options,
994 options) == IPP_STATUS_OK)
995 printf(&quot;Created job: %d\n&quot;, job_id);
996else
997 printf(&quot;Unable to create job: %s\n&quot;,
998 cupsLastErrorString());
999</code></pre>
1000 <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>
1001 <pre><code>http_status_t
1002cupsStartDestDocument(http_t *http, cups_dest_t *dest,
1003 cups_dinfo_t *info, int job_id,
1004 const char *docname,
1005 const char *format,
1006 int num_options,
1007 cups_option_t *options,
1008 int last_document);
1009
1010http_status_t
1011cupsWriteRequestData(http_t *http, const char *buffer,
1012 size_t length);
1013
1014ipp_status_t
1015cupsFinishDestDocument(http_t *http, cups_dest_t *dest,
1016 cups_dinfo_t *info);
1017</code></pre>
1018 <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>
1019 <ul>
93d79201
MS
1020 <li> <p><code>CUPS_FORMAT_JPEG</code>: &quot;image/jpeg&quot;</p>
1021</li>
1022 <li> <p><code>CUPS_FORMAT_PDF</code>: &quot;application/pdf&quot;</p>
1023</li>
1024 <li> <p><code>CUPS_FORMAT_POSTSCRIPT</code>: &quot;application/postscript&quot;</p>
1025</li>
1026 <li> <p><code>CUPS_FORMAT_TEXT</code>: &quot;text/plain&quot;</p>
1027</li>
798d6e29
MS
1028</ul>
1029 <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>
1030 <p>For example, the following code submits a PDF file to the job that was just created:</p>
1031 <pre><code>FILE *fp = fopen(&quot;filename.pdf&quot;, &quot;rb&quot;);
1032size_t bytes;
1033char buffer[65536];
1034
1035if (cupsStartDestDocument(CUPS_HTTP_DEFAULT, dest, info,
1036 job_id, &quot;filename.pdf&quot;, 0, NULL,
1037 1) == HTTP_STATUS_CONTINUE)
1038{
1039 while ((bytes = fread(buffer, 1, sizeof(buffer), fp)) &gt; 0)
1040 if (cupsWriteRequestData(CUPS_HTTP_DEFAULT, buffer,
1041 bytes) != HTTP_STATUS_CONTINUE)
1042 break;
1043
1044 if (cupsFinishDestDocument(CUPS_HTTP_DEFAULT, dest,
1045 info) == IPP_STATUS_OK)
1046 puts(&quot;Document send succeeded.&quot;);
1047 else
1048 printf(&quot;Document send failed: %s\n&quot;,
1049 cupsLastErrorString());
1050}
1051
1052fclose(fp);
1053</code></pre>
93d79201 1054 <h2 class="title" id="sending-ipp-requests">Sending IPP Requests</h2>
b0fb2d75 1055 <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>
93d79201 1056 <h3 class="title" id="connecting-to-the-scheduler-or-printer">Connecting to the Scheduler or Printer</h3>
b0fb2d75
MS
1057 <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>
1058 <pre><code>http_t *
1059cupsConnectDest(cups_dest_t *dest, unsigned flags, int msec,
1060 int *cancel, char *resource,
1061 size_t resourcesize, cups_dest_cb_t cb,
1062 void *user_data);
1063</code></pre>
1064 <p>The <code>dest</code> argument specifies the destination to connect to.</p>
1065 <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>
1066 <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>
1067 <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>
1068 <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>
1069 <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>
1070 <p>On success, a HTTP connection is returned that can be used to send IPP requests and get IPP responses.</p>
1071 <p>For example, the following code connects to the printer associated with a destination with a 30 second timeout:</p>
1072 <pre><code>char resource[256];
1073http_t *http = cupsConnectDest(dest, CUPS_DEST_FLAGS_DEVICE,
1074 30000, NULL, resource,
1075 sizeof(resource), NULL, NULL);
1076</code></pre>
93d79201 1077 <h3 class="title" id="creating-an-ipp-request">Creating an IPP Request</h3>
b0fb2d75
MS
1078 <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>
1079 <p>The <code>ippNewRequest</code> function creates a new IPP request:</p>
1080 <pre><code>ipp_t *
1081ippNewRequest(ipp_op_t op);
1082</code></pre>
1083 <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>
1084 <pre><code>ipp_t *request = ippNewRequest(IPP_OP_GET_PRINTER_ATTRIBUTES);
1085</code></pre>
1086 <p>The request identifier is automatically set to a unique value for the current process.</p>
1087 <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>
1088 <pre><code>const char *printer_uri = cupsGetOption(&quot;device-uri&quot;,
1089 dest-&gt;num_options,
1090 dest-&gt;options);
1091
1092ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1093 &quot;printer-uri&quot;, NULL, printer_uri);
1094</code></pre>
1095 <blockquote>
73721e3e
MS
1096 <p><strong>Note:</strong></p>
1097 <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>
b0fb2d75
MS
1098</blockquote>
1099 <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>
1100 <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>
1101 <pre><code>static const char * const requested_attributes[] =
1102{
1103 &quot;printer-state&quot;,
1104 &quot;printer-state-message&quot;,
1105 &quot;printer-state-reasons&quot;
1106};
1107
1108ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
1109 &quot;requested-attributes&quot;, 3, NULL,
1110 requested_attributes);
1111</code></pre>
1112 <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>
1113 <p>CUPS provides many functions to adding attributes of different types:</p>
1114 <ul>
93d79201
MS
1115 <li> <p><code>ippAddBoolean</code> adds a boolean (<code>IPP_TAG_BOOLEAN</code>) attribute with one value.</p>
1116</li>
1117 <li> <p><code>ippAddInteger</code> adds an enum (<code>IPP_TAG_ENUM</code>) or integer (<code>IPP_TAG_INTEGER</code>) attribute with one value.</p>
1118</li>
1119 <li> <p><code>ippAddIntegers</code> adds an enum or integer attribute with one or more values.</p>
1120</li>
1121 <li> <p><code>ippAddOctetString</code> adds an octetString attribute with one value.</p>
1122</li>
1123 <li> <p><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.</p>
1124</li>
1125 <li> <p><code>ippAddRange</code> adds a rangeOfInteger attribute with one range.</p>
1126</li>
1127 <li> <p><code>ippAddRanges</code> adds a rangeOfInteger attribute with one or more ranges.</p>
1128</li>
1129 <li> <p><code>ippAddResolution</code> adds a resolution attribute with one resolution.</p>
1130</li>
1131 <li> <p><code>ippAddResolutions</code> adds a resolution attribute with one or more resolutions.</p>
1132</li>
1133 <li> <p><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.</p>
1134</li>
1135 <li> <p><code>ippAddStrings</code> adds a charset, keyword, mimeMediaType, name, naturalLanguage, text, uri, or uriScheme attribute with one or more values.</p>
1136</li>
b0fb2d75 1137</ul>
93d79201 1138 <h3 class="title" id="sending-the-ipp-request">Sending the IPP Request</h3>
b0fb2d75
MS
1139 <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>
1140 <pre><code>ipp_t *response = cupsDoRequest(http, request, resource);
1141</code></pre>
1142 <p>For requests like Send-Document that include a file, the <code>cupsDoFileRequest</code> function should be used:</p>
1143 <pre><code>ipp_t *response = cupsDoFileRequest(http, request, resource,
1144 filename);
1145</code></pre>
1146 <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>
1147 <p>The status from the most recent request can be queried using the <code>cupsLastError</code> function, for example:</p>
1148 <pre><code>if (cupsLastError() &gt;= IPP_STATUS_ERROR_BAD_REQUEST)
1149{
1150 /* request failed */
1151}
1152</code></pre>
1153 <p>A human-readable error message is also available using the <code>cupsLastErrorString</code> function:</p>
1154 <pre><code>if (cupsLastError() &gt;= IPP_STATUS_ERROR_BAD_REQUEST)
1155{
1156 /* request failed */
1157 printf(&quot;Request failed: %s\n&quot;, cupsLastErrorString());
1158}
1159</code></pre>
93d79201 1160 <h3 class="title" id="processing-the-ipp-response">Processing the IPP Response</h3>
b0fb2d75
MS
1161 <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>
1162 <p>For example, the following code finds the printer state attributes and prints their values:</p>
1163 <pre><code>ipp_attribute_t *attr;
1164
1165if ((attr = ippFindAttribute(response, &quot;printer-state&quot;,
1166 IPP_TAG_ENUM)) != NULL)
1167{
1168 printf(&quot;printer-state=%s\n&quot;,
db5424ea 1169 ippEnumString(&quot;printer-state&quot;, ippGetInteger(attr, 0)));
b0fb2d75
MS
1170}
1171else
1172 puts(&quot;printer-state=unknown&quot;);
1173
1174if ((attr = ippFindAttribute(response, &quot;printer-state-message&quot;,
1175 IPP_TAG_TEXT)) != NULL)
1176{
1177 printf(&quot;printer-state-message=\&quot;%s\&quot;\n&quot;,
1178 ippGetString(attr, 0, NULL)));
1179}
1180
1181if ((attr = ippFindAttribute(response, &quot;printer-state-reasons&quot;,
1182 IPP_TAG_KEYWORD)) != NULL)
1183{
1184 int i, count = ippGetCount(attr);
1185
1186 puts(&quot;printer-state-reasons=&quot;);
1187 for (i = 0; i &lt; count; i ++)
1188 printf(&quot; %s\n&quot;, ippGetString(attr, i, NULL)));
1189}
1190</code></pre>
1191 <p>The <code>ippGetCount</code> function returns the number of values in an attribute.</p>
1192 <p>The <code>ippGetInteger</code> and <code>ippGetString</code> functions return a single integer or string value from an attribute.</p>
db5424ea 1193 <p>The <code>ippEnumString</code> function converts a enum value to its keyword (string) equivalent.</p>
b0fb2d75
MS
1194 <p>Once you are done using the IPP response message, free it using the <code>ippDelete</code> function:</p>
1195 <pre><code>ippDelete(response);
1196</code></pre>
93d79201 1197 <h3 class="title" id="authentication">Authentication</h3>
b0fb2d75
MS
1198 <p>CUPS normally handles authentication through the console. GUI applications should set a password callback using the <code>cupsSetPasswordCB2</code> function:</p>
1199 <pre><code>void
1200cupsSetPasswordCB2(cups_password_cb2_t cb, void *user_data);
1201</code></pre>
1202 <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>
1203 <pre><code>const char *
1204cups_password_cb2(const char *prompt, http_t *http,
1205 const char *method, const char *resource,
1206 void *user_data);
1207</code></pre>
1208 <p>The <code>prompt</code> argument is a string from CUPS that should be displayed to the user.</p>
1209 <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>
1210 <p>The <code>method</code> argument specifies the HTTP method used for the request and is typically &quot;POST&quot;.</p>
1211 <p>The <code>resource</code> argument specifies the path used for the request.</p>
1212 <p>The <code>user_data</code> argument provides the user data pointer from the <code>cupsSetPasswordCB2</code> call.</p>
798d6e29
MS
1213 <h2 class="title"><a id="FUNCTIONS">Functions</a></h2>
1214<h3 class="function"><a id="cupsAddDest">cupsAddDest</a></h3>
1215 <p class="description">Add a destination to the list of destinations.</p>
1216<p class="code">
98d88c8d
MS
1217int cupsAddDest(const char *name, const char *instance, int num_dests, <a href="#cups_dest_t">cups_dest_t</a> **dests);</p>
1218<h4 class="parameters">Parameters</h4>
1219<table class="list"><tbody>
1220<tr><th>name</th>
1221 <td class="description">Destination name</td></tr>
1222<tr><th>instance</th>
1223 <td class="description">Instance name or <code>NULL</code> for none/primary</td></tr>
1224<tr><th>num_dests</th>
1225 <td class="description">Number of destinations</td></tr>
1226<tr><th>dests</th>
1227 <td class="description">Destinations</td></tr>
1228</tbody></table>
798d6e29
MS
1229<h4 class="returnvalue">Return Value</h4>
1230 <p class="description">New number of destinations</p>
1231<h4 class="discussion">Discussion</h4>
1232 <p class="discussion">This function cannot be used to add a new class or printer queue,
1233it only adds a new container of saved options for the named
1234destination or instance.<br>
1235<br>
1236If the named destination already exists, the destination list is
1237returned unchanged. Adding a new instance of a destination creates
1238a copy of that destination's options.<br>
1239<br>
1240Use the <a href="#cupsSaveDests"><code>cupsSaveDests</code></a> function to save the updated list of
1241destinations to the user's lpoptions file.</p>
c669a17e 1242<h3 class="function"><span class="info">&#160;CUPS 2.3/macOS 10.14&#160;</span><a id="cupsAddDestMediaOptions">cupsAddDestMediaOptions</a></h3>
63b75fbe
MS
1243 <p class="description">Add the option corresponding to the specified media size.</p>
1244<p class="code">
1245int 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>
1246<h4 class="parameters">Parameters</h4>
1247<table class="list"><tbody>
1248<tr><th>http</th>
1249 <td class="description">Connection to destination</td></tr>
1250<tr><th>dest</th>
1251 <td class="description">Destination</td></tr>
1252<tr><th>dinfo</th>
1253 <td class="description">Destination information</td></tr>
1254<tr><th>flags</th>
1255 <td class="description">Media matching flags</td></tr>
1256<tr><th>size</th>
1257 <td class="description">Media size</td></tr>
1258<tr><th>num_options</th>
1259 <td class="description">Current number of options</td></tr>
1260<tr><th>options</th>
1261 <td class="description">Options</td></tr>
1262</tbody></table>
1263<h4 class="returnvalue">Return Value</h4>
1264 <p class="description">New number of options</p>
98d88c8d 1265<h3 class="function"><span class="info">&#160;CUPS 2.2.4/macOS 10.13&#160;</span><a id="cupsAddIntegerOption">cupsAddIntegerOption</a></h3>
53af7f21 1266 <p class="description">Add an integer option to an option array.</p>
798d6e29 1267<p class="code">
98d88c8d
MS
1268int cupsAddIntegerOption(const char *name, int value, int num_options, <a href="#cups_option_t">cups_option_t</a> **options);</p>
1269<h4 class="parameters">Parameters</h4>
1270<table class="list"><tbody>
1271<tr><th>name</th>
1272 <td class="description">Name of option</td></tr>
1273<tr><th>value</th>
1274 <td class="description">Value of option</td></tr>
1275<tr><th>num_options</th>
1276 <td class="description">Number of options</td></tr>
1277<tr><th>options</th>
1278 <td class="description">Pointer to options</td></tr>
1279</tbody></table>
798d6e29
MS
1280<h4 class="returnvalue">Return Value</h4>
1281 <p class="description">Number of options</p>
1282<h4 class="discussion">Discussion</h4>
1283 <p class="discussion">New option arrays can be initialized simply by passing 0 for the
53af7f21 1284&quot;num_options&quot; parameter.
798d6e29
MS
1285
1286</p>
53af7f21
MS
1287<h3 class="function"><a id="cupsAddOption">cupsAddOption</a></h3>
1288 <p class="description">Add an option to an option array.</p>
798d6e29 1289<p class="code">
98d88c8d
MS
1290int cupsAddOption(const char *name, const char *value, int num_options, <a href="#cups_option_t">cups_option_t</a> **options);</p>
1291<h4 class="parameters">Parameters</h4>
1292<table class="list"><tbody>
1293<tr><th>name</th>
1294 <td class="description">Name of option</td></tr>
1295<tr><th>value</th>
1296 <td class="description">Value of option</td></tr>
1297<tr><th>num_options</th>
1298 <td class="description">Number of options</td></tr>
1299<tr><th>options</th>
1300 <td class="description">Pointer to options</td></tr>
1301</tbody></table>
798d6e29 1302<h4 class="returnvalue">Return Value</h4>
53af7f21 1303 <p class="description">Number of options</p>
798d6e29 1304<h4 class="discussion">Discussion</h4>
53af7f21
MS
1305 <p class="discussion">New option arrays can be initialized simply by passing 0 for the
1306&quot;num_options&quot; parameter.</p>
98d88c8d 1307<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCancelDestJob">cupsCancelDestJob</a></h3>
798d6e29 1308 <p class="description">Cancel a job on a destination.</p>
98d88c8d
MS
1309<p class="code">
1310ipp_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>
1311<h4 class="parameters">Parameters</h4>
1312<table class="list"><tbody>
1313<tr><th>http</th>
1314 <td class="description">Connection to destination</td></tr>
1315<tr><th>dest</th>
1316 <td class="description">Destination</td></tr>
1317<tr><th>job_id</th>
1318 <td class="description">Job ID</td></tr>
1319</tbody></table>
1320<h4 class="returnvalue">Return Value</h4>
1321 <p class="description">Status of cancel operation</p>
1322<h4 class="discussion">Discussion</h4>
798d6e29
MS
1323 <p class="discussion">The &quot;job_id&quot; is the number returned by cupsCreateDestJob.<br>
1324<br>
1325Returns <code>IPP_STATUS_OK</code> on success and
98d88c8d 1326<code>IPP_STATUS_ERROR_NOT_AUTHORIZED</code> or
798d6e29
MS
1327<code>IPP_STATUS_ERROR_FORBIDDEN</code> on failure.
1328
798d6e29
MS
1329</p>
1330<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCheckDestSupported">cupsCheckDestSupported</a></h3>
1331 <p class="description">Check that the option and value are supported
1332by the destination.</p>
1333<p class="code">
98d88c8d
MS
1334int 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>
1335<h4 class="parameters">Parameters</h4>
1336<table class="list"><tbody>
1337<tr><th>http</th>
1338 <td class="description">Connection to destination</td></tr>
1339<tr><th>dest</th>
1340 <td class="description">Destination</td></tr>
1341<tr><th>dinfo</th>
1342 <td class="description">Destination information</td></tr>
1343<tr><th>option</th>
1344 <td class="description">Option</td></tr>
1345<tr><th>value</th>
b0fb2d75 1346 <td class="description">Value or <code>NULL</code></td></tr>
98d88c8d 1347</tbody></table>
798d6e29
MS
1348<h4 class="returnvalue">Return Value</h4>
1349 <p class="description">1 if supported, 0 otherwise</p>
1350<h4 class="discussion">Discussion</h4>
1351 <p class="discussion">Returns 1 if supported, 0 otherwise.
1352
1353</p>
1354<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCloseDestJob">cupsCloseDestJob</a></h3>
1355 <p class="description">Close a job and start printing.</p>
1356<p class="code">
98d88c8d
MS
1357ipp_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>
1358<h4 class="parameters">Parameters</h4>
1359<table class="list"><tbody>
1360<tr><th>http</th>
1361 <td class="description">Connection to destination</td></tr>
1362<tr><th>dest</th>
1363 <td class="description">Destination</td></tr>
1364<tr><th>info</th>
1365 <td class="description">Destination information</td></tr>
1366<tr><th>job_id</th>
1367 <td class="description">Job ID</td></tr>
1368</tbody></table>
798d6e29
MS
1369<h4 class="returnvalue">Return Value</h4>
1370 <p class="description">IPP status code</p>
1371<h4 class="discussion">Discussion</h4>
1372 <p class="discussion">Use when the last call to cupsStartDocument passed 0 for &quot;last_document&quot;.
1373&quot;job_id&quot; is the job ID returned by cupsCreateDestJob. Returns <code>IPP_STATUS_OK</code>
1374on success.
1375
1376</p>
1377<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsConnectDest">cupsConnectDest</a></h3>
699fe020 1378 <p class="description">Open a connection to the destination.</p>
98d88c8d
MS
1379<p class="code">
1380<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>
1381<h4 class="parameters">Parameters</h4>
1382<table class="list"><tbody>
1383<tr><th>dest</th>
1384 <td class="description">Destination</td></tr>
1385<tr><th>flags</th>
1386 <td class="description">Connection flags</td></tr>
1387<tr><th>msec</th>
1388 <td class="description">Timeout in milliseconds</td></tr>
1389<tr><th>cancel</th>
1390 <td class="description">Pointer to &quot;cancel&quot; variable</td></tr>
1391<tr><th>resource</th>
1392 <td class="description">Resource buffer</td></tr>
1393<tr><th>resourcesize</th>
1394 <td class="description">Size of resource buffer</td></tr>
1395<tr><th>cb</th>
1396 <td class="description">Callback function</td></tr>
1397<tr><th>user_data</th>
1398 <td class="description">User data pointer</td></tr>
1399</tbody></table>
1400<h4 class="returnvalue">Return Value</h4>
1401 <p class="description">Connection to destination or <code>NULL</code></p>
1402<h4 class="discussion">Discussion</h4>
1403 <p class="discussion">Connect to the destination, returning a new <code>http_t</code> connection object
1404and optionally the resource path to use for the destination. These calls
1405will block until a connection is made, the timeout expires, the integer
1406pointed to by &quot;cancel&quot; is non-zero, or the callback function (or block)
1407returns 0. The caller is responsible for calling <a href="#httpClose"><code>httpClose</code></a> on the
b0fb2d75
MS
1408returned connection.<br>
1409<br>
699fe020 1410Starting with CUPS 2.2.4, the caller can pass <code>CUPS_DEST_FLAGS_DEVICE</code>
b0fb2d75
MS
1411for the &quot;flags&quot; argument to connect directly to the device associated with
1412the destination. Otherwise, the connection is made to the CUPS scheduler
1413associated with the destination.
798d6e29
MS
1414
1415</p>
53af7f21
MS
1416<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCopyDest">cupsCopyDest</a></h3>
1417 <p class="description">Copy a destination.</p>
798d6e29 1418<p class="code">
98d88c8d
MS
1419int 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>
1420<h4 class="parameters">Parameters</h4>
1421<table class="list"><tbody>
1422<tr><th>dest</th>
1423 <td class="description">Destination to copy</td></tr>
1424<tr><th>num_dests</th>
1425 <td class="description">Number of destinations</td></tr>
1426<tr><th>dests</th>
1427 <td class="description">Destination array</td></tr>
1428</tbody></table>
798d6e29
MS
1429<h4 class="returnvalue">Return Value</h4>
1430 <p class="description">New number of destinations</p>
1431<h4 class="discussion">Discussion</h4>
1432 <p class="discussion">Make a copy of the destination to an array of destinations (or just a single
1433copy) - for use with the cupsEnumDests* functions. The caller is responsible
1434for calling cupsFreeDests() on the returned object(s).
1435
1436</p>
1437<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCopyDestConflicts">cupsCopyDestConflicts</a></h3>
1438 <p class="description">Get conflicts and resolutions for a new
1439option/value pair.</p>
1440<p class="code">
98d88c8d
MS
1441int 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>
1442<h4 class="parameters">Parameters</h4>
1443<table class="list"><tbody>
1444<tr><th>http</th>
1445 <td class="description">Connection to destination</td></tr>
1446<tr><th>dest</th>
1447 <td class="description">Destination</td></tr>
1448<tr><th>dinfo</th>
1449 <td class="description">Destination information</td></tr>
1450<tr><th>num_options</th>
1451 <td class="description">Number of current options</td></tr>
1452<tr><th>options</th>
1453 <td class="description">Current options</td></tr>
1454<tr><th>new_option</th>
1455 <td class="description">New option</td></tr>
1456<tr><th>new_value</th>
1457 <td class="description">New value</td></tr>
1458<tr><th>num_conflicts</th>
1459 <td class="description">Number of conflicting options</td></tr>
1460<tr><th>conflicts</th>
1461 <td class="description">Conflicting options</td></tr>
1462<tr><th>num_resolved</th>
1463 <td class="description">Number of options to resolve</td></tr>
1464<tr><th>resolved</th>
1465 <td class="description">Resolved options</td></tr>
1466</tbody></table>
798d6e29
MS
1467<h4 class="returnvalue">Return Value</h4>
1468 <p class="description">1 if there is a conflict, 0 if none, -1 on error</p>
1469<h4 class="discussion">Discussion</h4>
1470 <p class="discussion">&quot;num_options&quot; and &quot;options&quot; represent the currently selected options by the
1471user. &quot;new_option&quot; and &quot;new_value&quot; are the setting the user has just
1472changed.<br>
1473<br>
1474Returns 1 if there is a conflict, 0 if there are no conflicts, and -1 if
1475there was an unrecoverable error such as a resolver loop.<br>
1476<br>
1477If &quot;num_conflicts&quot; and &quot;conflicts&quot; are not <code>NULL</code>, they are set to
1478contain the list of conflicting option/value pairs. Similarly, if
1479&quot;num_resolved&quot; and &quot;resolved&quot; are not <code>NULL</code> they will be set to the
1480list of changes needed to resolve the conflict.<br>
1481<br>
1482If cupsCopyDestConflicts returns 1 but &quot;num_resolved&quot; and &quot;resolved&quot; are set
1483to 0 and <code>NULL</code>, respectively, then the conflict cannot be resolved.
1484
1485</p>
1486<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCopyDestInfo">cupsCopyDestInfo</a></h3>
1487 <p class="description">Get the supported values/capabilities for the
1488destination.</p>
1489<p class="code">
98d88c8d 1490<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 1491<h4 class="parameters">Parameters</h4>
98d88c8d
MS
1492<table class="list"><tbody>
1493<tr><th>http</th>
1494 <td class="description">Connection to destination</td></tr>
1495<tr><th>dest</th>
1496 <td class="description">Destination</td></tr>
1497</tbody></table>
798d6e29
MS
1498<h4 class="returnvalue">Return Value</h4>
1499 <p class="description">Destination information</p>
1500<h4 class="discussion">Discussion</h4>
1501 <p class="discussion">The caller is responsible for calling <a href="#cupsFreeDestInfo"><code>cupsFreeDestInfo</code></a> on the return
1502value. <code>NULL</code> is returned on error.
1503
1504</p>
1505<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsCreateDestJob">cupsCreateDestJob</a></h3>
1506 <p class="description">Create a job on a destination.</p>
1507<p class="code">
98d88c8d
MS
1508ipp_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>
1509<h4 class="parameters">Parameters</h4>
1510<table class="list"><tbody>
1511<tr><th>http</th>
1512 <td class="description">Connection to destination</td></tr>
1513<tr><th>dest</th>
1514 <td class="description">Destination</td></tr>
1515<tr><th>info</th>
1516 <td class="description">Destination information</td></tr>
1517<tr><th>job_id</th>
1518 <td class="description">Job ID or 0 on error</td></tr>
1519<tr><th>title</th>
1520 <td class="description">Job name</td></tr>
1521<tr><th>num_options</th>
1522 <td class="description">Number of job options</td></tr>
1523<tr><th>options</th>
1524 <td class="description">Job options</td></tr>
1525</tbody></table>
798d6e29
MS
1526<h4 class="returnvalue">Return Value</h4>
1527 <p class="description">IPP status code</p>
1528<h4 class="discussion">Discussion</h4>
1529 <p class="discussion">Returns <code>IPP_STATUS_OK</code> or <code>IPP_STATUS_OK_SUBST</code> on success, saving the job ID
1530in the variable pointed to by &quot;job_id&quot;.
1531
1532</p>
798d6e29
MS
1533<h3 class="function"><span class="info">&#160;CUPS 1.1.20/macOS 10.4&#160;</span><a id="cupsDoAuthentication">cupsDoAuthentication</a></h3>
1534 <p class="description">Authenticate a request.</p>
1535<p class="code">
98d88c8d
MS
1536int cupsDoAuthentication(<a href="#http_t">http_t</a> *http, const char *method, const char *resource);</p>
1537<h4 class="parameters">Parameters</h4>
1538<table class="list"><tbody>
1539<tr><th>http</th>
1540 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
1541<tr><th>method</th>
1542 <td class="description">Request method (&quot;GET&quot;, &quot;POST&quot;, &quot;PUT&quot;)</td></tr>
1543<tr><th>resource</th>
1544 <td class="description">Resource path</td></tr>
1545</tbody></table>
798d6e29
MS
1546<h4 class="returnvalue">Return Value</h4>
1547 <p class="description">0 on success, -1 on error</p>
1548<h4 class="discussion">Discussion</h4>
1549 <p class="discussion">This function should be called in response to a <code>HTTP_STATUS_UNAUTHORIZED</code>
1550status, prior to resubmitting your request.
1551
1552</p>
c669a17e 1553<h3 class="function"><span class="info">&#160;CUPS 2.3/macOS 10.14&#160;</span><a id="cupsEncodeOption">cupsEncodeOption</a></h3>
ddf2ec73
MS
1554 <p class="description">Encode a single option into an IPP attribute.</p>
1555<p class="code">
1556<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>
1557<h4 class="parameters">Parameters</h4>
1558<table class="list"><tbody>
1559<tr><th>ipp</th>
1560 <td class="description">IPP request/response</td></tr>
1561<tr><th>group_tag</th>
1562 <td class="description">Attribute group</td></tr>
1563<tr><th>name</th>
1564 <td class="description">Option name</td></tr>
1565<tr><th>value</th>
1566 <td class="description">Option string value</td></tr>
1567</tbody></table>
1568<h4 class="returnvalue">Return Value</h4>
1569 <p class="description">New attribute or <code>NULL</code> on error</p>
798d6e29 1570<h3 class="function"><a id="cupsEncodeOptions">cupsEncodeOptions</a></h3>
53af7f21 1571 <p class="description">Encode printer options into IPP attributes.</p>
98d88c8d
MS
1572<p class="code">
1573void cupsEncodeOptions(<a href="#ipp_t">ipp_t</a> *ipp, int num_options, <a href="#cups_option_t">cups_option_t</a> *options);</p>
1574<h4 class="parameters">Parameters</h4>
1575<table class="list"><tbody>
1576<tr><th>ipp</th>
ddf2ec73 1577 <td class="description">IPP request/response</td></tr>
98d88c8d
MS
1578<tr><th>num_options</th>
1579 <td class="description">Number of options</td></tr>
1580<tr><th>options</th>
1581 <td class="description">Options</td></tr>
1582</tbody></table>
1583<h4 class="discussion">Discussion</h4>
798d6e29 1584 <p class="discussion">This function adds operation, job, and then subscription attributes,
98d88c8d
MS
1585in that order. Use the <a href="#cupsEncodeOptions2"><code>cupsEncodeOptions2</code></a> function to add attributes
1586for a single group.</p>
1587<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="cupsEncodeOptions2">cupsEncodeOptions2</a></h3>
53af7f21 1588 <p class="description">Encode printer options into IPP attributes for a group.</p>
98d88c8d
MS
1589<p class="code">
1590void 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>
1591<h4 class="parameters">Parameters</h4>
1592<table class="list"><tbody>
1593<tr><th>ipp</th>
ddf2ec73 1594 <td class="description">IPP request/response</td></tr>
98d88c8d
MS
1595<tr><th>num_options</th>
1596 <td class="description">Number of options</td></tr>
1597<tr><th>options</th>
1598 <td class="description">Options</td></tr>
1599<tr><th>group_tag</th>
1600 <td class="description">Group to encode</td></tr>
1601</tbody></table>
1602<h4 class="discussion">Discussion</h4>
798d6e29 1603 <p class="discussion">This function only adds attributes for a single group. Call this
98d88c8d 1604function multiple times for each group, or use <a href="#cupsEncodeOptions"><code>cupsEncodeOptions</code></a>
798d6e29
MS
1605to add the standard groups.
1606
1607</p>
1608<h3 class="function"><a id="cupsEncryption">cupsEncryption</a></h3>
1609 <p class="description">Get the current encryption settings.</p>
1610<p class="code">
98d88c8d 1611<a href="#http_encryption_t">http_encryption_t</a> cupsEncryption(void);</p>
798d6e29
MS
1612<h4 class="returnvalue">Return Value</h4>
1613 <p class="description">Encryption settings</p>
1614<h4 class="discussion">Discussion</h4>
1615 <p class="discussion">The default encryption setting comes from the CUPS_ENCRYPTION
1616environment variable, then the ~/.cups/client.conf file, and finally the
1617/etc/cups/client.conf file. If not set, the default is
1618<code>HTTP_ENCRYPTION_IF_REQUESTED</code>.<br>
1619<br>
1620Note: The current encryption setting is tracked separately for each thread
1621in a program. Multi-threaded programs that override the setting via the
1622<a href="#cupsSetEncryption"><code>cupsSetEncryption</code></a> function need to do so in each thread for the same
1623setting to be used.</p>
1624<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsEnumDests">cupsEnumDests</a></h3>
1625 <p class="description">Enumerate available destinations with a callback function.</p>
1626<p class="code">
98d88c8d
MS
1627int 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>
1628<h4 class="parameters">Parameters</h4>
1629<table class="list"><tbody>
1630<tr><th>flags</th>
1631 <td class="description">Enumeration flags</td></tr>
1632<tr><th>msec</th>
1633 <td class="description">Timeout in milliseconds, -1 for indefinite</td></tr>
1634<tr><th>cancel</th>
1635 <td class="description">Pointer to &quot;cancel&quot; variable</td></tr>
1636<tr><th>type</th>
1637 <td class="description">Printer type bits</td></tr>
1638<tr><th>mask</th>
1639 <td class="description">Mask for printer type bits</td></tr>
1640<tr><th>cb</th>
1641 <td class="description">Callback function</td></tr>
1642<tr><th>user_data</th>
1643 <td class="description">User data</td></tr>
1644</tbody></table>
798d6e29
MS
1645<h4 class="returnvalue">Return Value</h4>
1646 <p class="description">1 on success, 0 on failure</p>
1647<h4 class="discussion">Discussion</h4>
53af7f21
MS
1648 <p class="discussion">Destinations are enumerated from one or more sources. The callback function
1649receives the <code>user_data</code> pointer and the destination pointer which can
1650be used as input to the <a href="#cupsCopyDest"><code>cupsCopyDest</code></a> function. The function must
1651return 1 to continue enumeration or 0 to stop.<br>
798d6e29 1652<br>
53af7f21
MS
1653The <code>type</code> and <code>mask</code> arguments allow the caller to filter the
1654destinations that are enumerated. Passing 0 for both will enumerate all
1655printers. The constant <code>CUPS_PRINTER_DISCOVERED</code> is used to filter on
1656destinations that are available but have not yet been added locally.<br>
798d6e29
MS
1657<br>
1658Enumeration happens on the current thread and does not return until all
718ee2ff
MS
1659destinations have been enumerated or the callback function returns 0.<br>
1660<br>
1661Note: The callback function will likely receive multiple updates for the same
1662destinations - it is up to the caller to suppress any duplicate destinations.
798d6e29
MS
1663
1664</p>
798d6e29
MS
1665<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsFindDestDefault">cupsFindDestDefault</a></h3>
1666 <p class="description">Find the default value(s) for the given option.</p>
1667<p class="code">
98d88c8d
MS
1668<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>
1669<h4 class="parameters">Parameters</h4>
1670<table class="list"><tbody>
1671<tr><th>http</th>
1672 <td class="description">Connection to destination</td></tr>
1673<tr><th>dest</th>
1674 <td class="description">Destination</td></tr>
1675<tr><th>dinfo</th>
1676 <td class="description">Destination information</td></tr>
1677<tr><th>option</th>
1678 <td class="description">Option/attribute name</td></tr>
1679</tbody></table>
798d6e29
MS
1680<h4 class="returnvalue">Return Value</h4>
1681 <p class="description">Default attribute or <code>NULL</code> for none</p>
1682<h4 class="discussion">Discussion</h4>
1683 <p class="discussion">The returned value is an IPP attribute. Use the <code>ippGetBoolean</code>,
1684<code>ippGetCollection</code>, <code>ippGetCount</code>, <code>ippGetDate</code>,
1685<code>ippGetInteger</code>, <code>ippGetOctetString</code>, <code>ippGetRange</code>,
1686<code>ippGetResolution</code>, <code>ippGetString</code>, and <code>ippGetValueTag</code>
1687functions to inspect the default value(s) as needed.
1688
1689</p>
1690<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsFindDestReady">cupsFindDestReady</a></h3>
1691 <p class="description">Find the default value(s) for the given option.</p>
1692<p class="code">
98d88c8d
MS
1693<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>
1694<h4 class="parameters">Parameters</h4>
1695<table class="list"><tbody>
1696<tr><th>http</th>
1697 <td class="description">Connection to destination</td></tr>
1698<tr><th>dest</th>
1699 <td class="description">Destination</td></tr>
1700<tr><th>dinfo</th>
1701 <td class="description">Destination information</td></tr>
1702<tr><th>option</th>
1703 <td class="description">Option/attribute name</td></tr>
1704</tbody></table>
798d6e29
MS
1705<h4 class="returnvalue">Return Value</h4>
1706 <p class="description">Default attribute or <code>NULL</code> for none</p>
1707<h4 class="discussion">Discussion</h4>
1708 <p class="discussion">The returned value is an IPP attribute. Use the <code>ippGetBoolean</code>,
1709<code>ippGetCollection</code>, <code>ippGetCount</code>, <code>ippGetDate</code>,
1710<code>ippGetInteger</code>, <code>ippGetOctetString</code>, <code>ippGetRange</code>,
1711<code>ippGetResolution</code>, <code>ippGetString</code>, and <code>ippGetValueTag</code>
1712functions to inspect the default value(s) as needed.
1713
1714</p>
1715<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsFindDestSupported">cupsFindDestSupported</a></h3>
1716 <p class="description">Find the default value(s) for the given option.</p>
1717<p class="code">
98d88c8d
MS
1718<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>
1719<h4 class="parameters">Parameters</h4>
1720<table class="list"><tbody>
1721<tr><th>http</th>
1722 <td class="description">Connection to destination</td></tr>
1723<tr><th>dest</th>
1724 <td class="description">Destination</td></tr>
1725<tr><th>dinfo</th>
1726 <td class="description">Destination information</td></tr>
1727<tr><th>option</th>
1728 <td class="description">Option/attribute name</td></tr>
1729</tbody></table>
798d6e29
MS
1730<h4 class="returnvalue">Return Value</h4>
1731 <p class="description">Default attribute or <code>NULL</code> for none</p>
1732<h4 class="discussion">Discussion</h4>
1733 <p class="discussion">The returned value is an IPP attribute. Use the <code>ippGetBoolean</code>,
1734<code>ippGetCollection</code>, <code>ippGetCount</code>, <code>ippGetDate</code>,
1735<code>ippGetInteger</code>, <code>ippGetOctetString</code>, <code>ippGetRange</code>,
1736<code>ippGetResolution</code>, <code>ippGetString</code>, and <code>ippGetValueTag</code>
1737functions to inspect the default value(s) as needed.
1738
1739</p>
1740<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsFinishDestDocument">cupsFinishDestDocument</a></h3>
1741 <p class="description">Finish the current document.</p>
1742<p class="code">
98d88c8d
MS
1743ipp_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>
1744<h4 class="parameters">Parameters</h4>
1745<table class="list"><tbody>
1746<tr><th>http</th>
1747 <td class="description">Connection to destination</td></tr>
1748<tr><th>dest</th>
1749 <td class="description">Destination</td></tr>
1750<tr><th>info</th>
1751 <td class="description">Destination information</td></tr>
1752</tbody></table>
798d6e29
MS
1753<h4 class="returnvalue">Return Value</h4>
1754 <p class="description">Status of document submission</p>
1755<h4 class="discussion">Discussion</h4>
1756 <p class="discussion">Returns <code>IPP_STATUS_OK</code> or <code>IPP_STATUS_OK_SUBST</code> on success.
1757
798d6e29 1758</p>
98d88c8d 1759<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsFreeDestInfo">cupsFreeDestInfo</a></h3>
53af7f21
MS
1760 <p class="description">Free destination information obtained using
1761<a href="#cupsCopyDestInfo"><code>cupsCopyDestInfo</code></a>.</p>
798d6e29 1762<p class="code">
98d88c8d 1763void cupsFreeDestInfo(<a href="#cups_dinfo_t">cups_dinfo_t</a> *dinfo);</p>
798d6e29 1764<h4 class="parameters">Parameters</h4>
98d88c8d
MS
1765<table class="list"><tbody>
1766<tr><th>dinfo</th>
1767 <td class="description">Destination information</td></tr>
1768</tbody></table>
1769<h3 class="function"><a id="cupsFreeDests">cupsFreeDests</a></h3>
53af7f21 1770 <p class="description">Free the memory used by the list of destinations.</p>
798d6e29 1771<p class="code">
98d88c8d 1772void cupsFreeDests(int num_dests, <a href="#cups_dest_t">cups_dest_t</a> *dests);</p>
798d6e29 1773<h4 class="parameters">Parameters</h4>
98d88c8d
MS
1774<table class="list"><tbody>
1775<tr><th>num_dests</th>
1776 <td class="description">Number of destinations</td></tr>
1777<tr><th>dests</th>
1778 <td class="description">Destinations</td></tr>
1779</tbody></table>
1780<h3 class="function"><a id="cupsFreeJobs">cupsFreeJobs</a></h3>
53af7f21 1781 <p class="description">Free memory used by job data.</p>
798d6e29 1782<p class="code">
98d88c8d 1783void cupsFreeJobs(int num_jobs, <a href="#cups_job_t">cups_job_t</a> *jobs);</p>
798d6e29 1784<h4 class="parameters">Parameters</h4>
98d88c8d
MS
1785<table class="list"><tbody>
1786<tr><th>num_jobs</th>
1787 <td class="description">Number of jobs</td></tr>
1788<tr><th>jobs</th>
1789 <td class="description">Jobs</td></tr>
1790</tbody></table>
1791<h3 class="function"><a id="cupsFreeOptions">cupsFreeOptions</a></h3>
53af7f21 1792 <p class="description">Free all memory used by options.</p>
98d88c8d
MS
1793<p class="code">
1794void cupsFreeOptions(int num_options, <a href="#cups_option_t">cups_option_t</a> *options);</p>
1795<h4 class="parameters">Parameters</h4>
1796<table class="list"><tbody>
1797<tr><th>num_options</th>
1798 <td class="description">Number of options</td></tr>
1799<tr><th>options</th>
1800 <td class="description">Pointer to options</td></tr>
1801</tbody></table>
798d6e29
MS
1802<h3 class="function"><a id="cupsGetDest">cupsGetDest</a></h3>
1803 <p class="description">Get the named destination from the list.</p>
1804<p class="code">
98d88c8d
MS
1805<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>
1806<h4 class="parameters">Parameters</h4>
1807<table class="list"><tbody>
1808<tr><th>name</th>
1809 <td class="description">Destination name or <code>NULL</code> for the default destination</td></tr>
1810<tr><th>instance</th>
1811 <td class="description">Instance name or <code>NULL</code></td></tr>
1812<tr><th>num_dests</th>
1813 <td class="description">Number of destinations</td></tr>
1814<tr><th>dests</th>
1815 <td class="description">Destinations</td></tr>
1816</tbody></table>
798d6e29
MS
1817<h4 class="returnvalue">Return Value</h4>
1818 <p class="description">Destination pointer or <code>NULL</code></p>
1819<h4 class="discussion">Discussion</h4>
98d88c8d 1820 <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
1821list of supported destinations for the current user.</p>
1822<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsGetDestMediaByIndex">cupsGetDestMediaByIndex</a></h3>
1823 <p class="description">Get a media name, dimension, and margins for a
1824specific size.</p>
1825<p class="code">
98d88c8d
MS
1826int 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>
1827<h4 class="parameters">Parameters</h4>
1828<table class="list"><tbody>
1829<tr><th>http</th>
1830 <td class="description">Connection to destination</td></tr>
1831<tr><th>dest</th>
1832 <td class="description">Destination</td></tr>
1833<tr><th>dinfo</th>
1834 <td class="description">Destination information</td></tr>
1835<tr><th>n</th>
1836 <td class="description">Media size number (0-based)</td></tr>
1837<tr><th>flags</th>
1838 <td class="description">Media flags</td></tr>
1839<tr><th>size</th>
1840 <td class="description">Media size information</td></tr>
1841</tbody></table>
798d6e29
MS
1842<h4 class="returnvalue">Return Value</h4>
1843 <p class="description">1 on success, 0 on failure</p>
1844<h4 class="discussion">Discussion</h4>
1845 <p class="discussion">The <code>flags</code> parameter determines which set of media are indexed. For
1846example, passing <code>CUPS_MEDIA_FLAGS_BORDERLESS</code> will get the Nth
1847borderless size supported by the printer.
1848
1849</p>
1850<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsGetDestMediaByName">cupsGetDestMediaByName</a></h3>
1851 <p class="description">Get media names, dimensions, and margins.</p>
1852<p class="code">
98d88c8d
MS
1853int 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>
1854<h4 class="parameters">Parameters</h4>
1855<table class="list"><tbody>
1856<tr><th>http</th>
1857 <td class="description">Connection to destination</td></tr>
1858<tr><th>dest</th>
1859 <td class="description">Destination</td></tr>
1860<tr><th>dinfo</th>
1861 <td class="description">Destination information</td></tr>
1862<tr><th>media</th>
1863 <td class="description">Media name</td></tr>
1864<tr><th>flags</th>
1865 <td class="description">Media matching flags</td></tr>
1866<tr><th>size</th>
1867 <td class="description">Media size information</td></tr>
1868</tbody></table>
798d6e29
MS
1869<h4 class="returnvalue">Return Value</h4>
1870 <p class="description">1 on match, 0 on failure</p>
1871<h4 class="discussion">Discussion</h4>
1872 <p class="discussion">The &quot;media&quot; string is a PWG media name. &quot;Flags&quot; provides some matching
1873guidance (multiple flags can be combined):<br>
1874<br>
1875CUPS_MEDIA_FLAGS_DEFAULT = find the closest size supported by the printer,
1876CUPS_MEDIA_FLAGS_BORDERLESS = find a borderless size,
1877CUPS_MEDIA_FLAGS_DUPLEX = find a size compatible with 2-sided printing,
1878CUPS_MEDIA_FLAGS_EXACT = find an exact match for the size, and
1879CUPS_MEDIA_FLAGS_READY = if the printer supports media sensing, find the
1880size amongst the &quot;ready&quot; media.<br>
1881<br>
1882The matching result (if any) is returned in the &quot;cups_size_t&quot; structure.<br>
1883<br>
1884Returns 1 when there is a match and 0 if there is not a match.
1885
1886</p>
1887<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsGetDestMediaBySize">cupsGetDestMediaBySize</a></h3>
1888 <p class="description">Get media names, dimensions, and margins.</p>
1889<p class="code">
98d88c8d
MS
1890int 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>
1891<h4 class="parameters">Parameters</h4>
1892<table class="list"><tbody>
1893<tr><th>http</th>
1894 <td class="description">Connection to destination</td></tr>
1895<tr><th>dest</th>
1896 <td class="description">Destination</td></tr>
1897<tr><th>dinfo</th>
1898 <td class="description">Destination information</td></tr>
1899<tr><th>width</th>
1900 <td class="description">Media width in hundredths of
1901of millimeters</td></tr>
1902<tr><th>length</th>
1903 <td class="description">Media length in hundredths of
1904of millimeters</td></tr>
1905<tr><th>flags</th>
1906 <td class="description">Media matching flags</td></tr>
1907<tr><th>size</th>
1908 <td class="description">Media size information</td></tr>
1909</tbody></table>
798d6e29
MS
1910<h4 class="returnvalue">Return Value</h4>
1911 <p class="description">1 on match, 0 on failure</p>
1912<h4 class="discussion">Discussion</h4>
1913 <p class="discussion">&quot;Width&quot; and &quot;length&quot; are the dimensions in hundredths of millimeters.
1914&quot;Flags&quot; provides some matching guidance (multiple flags can be combined):<br>
1915<br>
1916CUPS_MEDIA_FLAGS_DEFAULT = find the closest size supported by the printer,
1917CUPS_MEDIA_FLAGS_BORDERLESS = find a borderless size,
1918CUPS_MEDIA_FLAGS_DUPLEX = find a size compatible with 2-sided printing,
1919CUPS_MEDIA_FLAGS_EXACT = find an exact match for the size, and
1920CUPS_MEDIA_FLAGS_READY = if the printer supports media sensing, find the
1921size amongst the &quot;ready&quot; media.<br>
1922<br>
1923The matching result (if any) is returned in the &quot;cups_size_t&quot; structure.<br>
1924<br>
1925Returns 1 when there is a match and 0 if there is not a match.
1926
1927</p>
1928<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsGetDestMediaCount">cupsGetDestMediaCount</a></h3>
1929 <p class="description">Get the number of sizes supported by a
1930destination.</p>
1931<p class="code">
98d88c8d
MS
1932int 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>
1933<h4 class="parameters">Parameters</h4>
1934<table class="list"><tbody>
1935<tr><th>http</th>
1936 <td class="description">Connection to destination</td></tr>
1937<tr><th>dest</th>
1938 <td class="description">Destination</td></tr>
1939<tr><th>dinfo</th>
1940 <td class="description">Destination information</td></tr>
1941<tr><th>flags</th>
1942 <td class="description">Media flags</td></tr>
1943</tbody></table>
798d6e29
MS
1944<h4 class="returnvalue">Return Value</h4>
1945 <p class="description">Number of sizes</p>
1946<h4 class="discussion">Discussion</h4>
1947 <p class="discussion">The <code>flags</code> parameter determines the set of media sizes that are
1948counted. For example, passing <code>CUPS_MEDIA_FLAGS_BORDERLESS</code> will return
1949the number of borderless sizes.
1950
1951</p>
1952<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsGetDestMediaDefault">cupsGetDestMediaDefault</a></h3>
1953 <p class="description">Get the default size for a destination.</p>
1954<p class="code">
98d88c8d
MS
1955int 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>
1956<h4 class="parameters">Parameters</h4>
1957<table class="list"><tbody>
1958<tr><th>http</th>
1959 <td class="description">Connection to destination</td></tr>
1960<tr><th>dest</th>
1961 <td class="description">Destination</td></tr>
1962<tr><th>dinfo</th>
1963 <td class="description">Destination information</td></tr>
1964<tr><th>flags</th>
1965 <td class="description">Media flags</td></tr>
1966<tr><th>size</th>
1967 <td class="description">Media size information</td></tr>
1968</tbody></table>
798d6e29
MS
1969<h4 class="returnvalue">Return Value</h4>
1970 <p class="description">1 on success, 0 on failure</p>
1971<h4 class="discussion">Discussion</h4>
1972 <p class="discussion">The <code>flags</code> parameter determines which default size is returned. For
1973example, passing <code>CUPS_MEDIA_FLAGS_BORDERLESS</code> will return the default
1974borderless size, typically US Letter or A4, but sometimes 4x6 photo media.
1975
1976</p>
1977<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="cupsGetDestWithURI">cupsGetDestWithURI</a></h3>
1978 <p class="description">Get a destination associated with a URI.</p>
1979<p class="code">
98d88c8d 1980<a href="#cups_dest_t">cups_dest_t</a> *cupsGetDestWithURI(const char *name, const char *uri);</p>
798d6e29 1981<h4 class="parameters">Parameters</h4>
98d88c8d
MS
1982<table class="list"><tbody>
1983<tr><th>name</th>
1984 <td class="description">Desired printer name or <code>NULL</code></td></tr>
1985<tr><th>uri</th>
1986 <td class="description">URI for the printer</td></tr>
1987</tbody></table>
798d6e29
MS
1988<h4 class="returnvalue">Return Value</h4>
1989 <p class="description">Destination or <code>NULL</code></p>
1990<h4 class="discussion">Discussion</h4>
1991 <p class="discussion">&quot;name&quot; is the desired name for the printer. If <code>NULL</code>, a name will be
1992created using the URI.<br>
1993<br>
1994&quot;uri&quot; is the &quot;ipp&quot; or &quot;ipps&quot; URI for the printer.
1995
1996</p>
98d88c8d
MS
1997<h3 class="function"><span class="info">&#160;CUPS 1.1.21/macOS 10.4&#160;</span><a id="cupsGetDests2">cupsGetDests2</a></h3>
1998 <p class="description">Get the list of destinations from the specified server.</p>
1999<p class="code">
2000int cupsGetDests2(<a href="#http_t">http_t</a> *http, <a href="#cups_dest_t">cups_dest_t</a> **dests);</p>
2001<h4 class="parameters">Parameters</h4>
2002<table class="list"><tbody>
2003<tr><th>http</th>
2004 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
2005<tr><th>dests</th>
2006 <td class="description">Destinations</td></tr>
2007</tbody></table>
2008<h4 class="returnvalue">Return Value</h4>
2009 <p class="description">Number of destinations</p>
2010<h4 class="discussion">Discussion</h4>
2011 <p class="discussion">Starting with CUPS 1.2, the returned list of destinations include the
2012&quot;printer-info&quot;, &quot;printer-is-accepting-jobs&quot;, &quot;printer-is-shared&quot;,
2013&quot;printer-make-and-model&quot;, &quot;printer-state&quot;, &quot;printer-state-change-time&quot;,
2014&quot;printer-state-reasons&quot;, &quot;printer-type&quot;, and &quot;printer-uri-supported&quot;
2015attributes as options.<br>
2016<br>
2017CUPS 1.4 adds the &quot;marker-change-time&quot;, &quot;marker-colors&quot;,
2018&quot;marker-high-levels&quot;, &quot;marker-levels&quot;, &quot;marker-low-levels&quot;, &quot;marker-message&quot;,
2019&quot;marker-names&quot;, &quot;marker-types&quot;, and &quot;printer-commands&quot; attributes as options.<br>
2020<br>
2021CUPS 2.2 adds accessible IPP printers to the list of destinations that can
2022be used. The &quot;printer-uri-supported&quot; option will be present for those IPP
2023printers that have been recently used.<br>
2024<br>
2025Use the <a href="#cupsFreeDests"><code>cupsFreeDests</code></a> function to free the destination list and
2026the <a href="#cupsGetDest"><code>cupsGetDest</code></a> function to find a particular destination.
2027
2028</p>
2029<h3 class="function"><span class="info">&#160;CUPS 2.2.4/macOS 10.13&#160;</span><a id="cupsGetIntegerOption">cupsGetIntegerOption</a></h3>
53af7f21 2030 <p class="description">Get an integer option value.</p>
798d6e29 2031<p class="code">
98d88c8d
MS
2032int cupsGetIntegerOption(const char *name, int num_options, <a href="#cups_option_t">cups_option_t</a> *options);</p>
2033<h4 class="parameters">Parameters</h4>
2034<table class="list"><tbody>
2035<tr><th>name</th>
2036 <td class="description">Name of option</td></tr>
2037<tr><th>num_options</th>
2038 <td class="description">Number of options</td></tr>
2039<tr><th>options</th>
2040 <td class="description">Options</td></tr>
2041</tbody></table>
798d6e29 2042<h4 class="returnvalue">Return Value</h4>
53af7f21 2043 <p class="description">Option value or <code>INT_MIN</code></p>
798d6e29 2044<h4 class="discussion">Discussion</h4>
53af7f21
MS
2045 <p class="discussion">INT_MIN is returned when the option does not exist, is not an integer, or
2046exceeds the range of values for the &quot;int&quot; type.
2047
2048</p>
798d6e29
MS
2049<h3 class="function"><span class="info">&#160;CUPS 1.1.21/macOS 10.4&#160;</span><a id="cupsGetJobs2">cupsGetJobs2</a></h3>
2050 <p class="description">Get the jobs from the specified server.</p>
2051<p class="code">
98d88c8d
MS
2052int 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>
2053<h4 class="parameters">Parameters</h4>
2054<table class="list"><tbody>
2055<tr><th>http</th>
2056 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
2057<tr><th>jobs</th>
2058 <td class="description">Job data</td></tr>
2059<tr><th>name</th>
2060 <td class="description"><code>NULL</code> = all destinations, otherwise show jobs for named destination</td></tr>
2061<tr><th>myjobs</th>
2062 <td class="description">0 = all users, 1 = mine</td></tr>
2063<tr><th>whichjobs</th>
2064 <td class="description"><code>CUPS_WHICHJOBS_ALL</code>, <code>CUPS_WHICHJOBS_ACTIVE</code>, or <code>CUPS_WHICHJOBS_COMPLETED</code></td></tr>
2065</tbody></table>
798d6e29
MS
2066<h4 class="returnvalue">Return Value</h4>
2067 <p class="description">Number of jobs</p>
2068<h4 class="discussion">Discussion</h4>
2069 <p class="discussion">A &quot;whichjobs&quot; value of <code>CUPS_WHICHJOBS_ALL</code> returns all jobs regardless
2070of state, while <code>CUPS_WHICHJOBS_ACTIVE</code> returns jobs that are
2071pending, processing, or held and <code>CUPS_WHICHJOBS_COMPLETED</code> returns
2072jobs that are stopped, canceled, aborted, or completed.
2073
2074</p>
2075<h3 class="function"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span><a id="cupsGetNamedDest">cupsGetNamedDest</a></h3>
2076 <p class="description">Get options for the named destination.</p>
2077<p class="code">
98d88c8d
MS
2078<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>
2079<h4 class="parameters">Parameters</h4>
2080<table class="list"><tbody>
2081<tr><th>http</th>
2082 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
2083<tr><th>name</th>
2084 <td class="description">Destination name or <code>NULL</code> for the default destination</td></tr>
2085<tr><th>instance</th>
2086 <td class="description">Instance name or <code>NULL</code></td></tr>
2087</tbody></table>
798d6e29
MS
2088<h4 class="returnvalue">Return Value</h4>
2089 <p class="description">Destination or <code>NULL</code></p>
2090<h4 class="discussion">Discussion</h4>
2091 <p class="discussion">This function is optimized for retrieving a single destination and should
98d88c8d
MS
2092be used instead of <a href="#cupsGetDests2"><code>cupsGetDests2</code></a> and <a href="#cupsGetDest"><code>cupsGetDest</code></a> when you
2093either know the name of the destination or want to print to the default
2094destination. If <code>NULL</code> is returned, the destination does not exist or
2095there is no default destination.<br>
798d6e29
MS
2096<br>
2097If &quot;http&quot; is <code>CUPS_HTTP_DEFAULT</code>, the connection to the default print
2098server will be used.<br>
2099<br>
2100If &quot;name&quot; is <code>NULL</code>, the default printer for the current user will be
2101returned.<br>
2102<br>
2103The returned destination must be freed using <a href="#cupsFreeDests"><code>cupsFreeDests</code></a> with a
2104&quot;num_dests&quot; value of 1.
2105
2106</p>
2107<h3 class="function"><a id="cupsGetOption">cupsGetOption</a></h3>
2108 <p class="description">Get an option value.</p>
2109<p class="code">
98d88c8d
MS
2110const char *cupsGetOption(const char *name, int num_options, <a href="#cups_option_t">cups_option_t</a> *options);</p>
2111<h4 class="parameters">Parameters</h4>
2112<table class="list"><tbody>
2113<tr><th>name</th>
2114 <td class="description">Name of option</td></tr>
2115<tr><th>num_options</th>
2116 <td class="description">Number of options</td></tr>
2117<tr><th>options</th>
2118 <td class="description">Options</td></tr>
2119</tbody></table>
798d6e29
MS
2120<h4 class="returnvalue">Return Value</h4>
2121 <p class="description">Option value or <code>NULL</code></p>
798d6e29 2122<h3 class="function"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span><a id="cupsGetPassword2">cupsGetPassword2</a></h3>
98d88c8d 2123 <p class="description">Get a password from the user using the current
798d6e29
MS
2124password callback.</p>
2125<p class="code">
98d88c8d
MS
2126const char *cupsGetPassword2(const char *prompt, <a href="#http_t">http_t</a> *http, const char *method, const char *resource);</p>
2127<h4 class="parameters">Parameters</h4>
2128<table class="list"><tbody>
2129<tr><th>prompt</th>
2130 <td class="description">Prompt string</td></tr>
2131<tr><th>http</th>
2132 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
2133<tr><th>method</th>
2134 <td class="description">Request method (&quot;GET&quot;, &quot;POST&quot;, &quot;PUT&quot;)</td></tr>
2135<tr><th>resource</th>
2136 <td class="description">Resource path</td></tr>
2137</tbody></table>
798d6e29
MS
2138<h4 class="returnvalue">Return Value</h4>
2139 <p class="description">Password</p>
2140<h4 class="discussion">Discussion</h4>
2141 <p class="discussion">Uses the current password callback function. Returns <code>NULL</code> if the
2142user does not provide a password.<br>
2143<br>
2144Note: The current password callback function is tracked separately for each
2145thread in a program. Multi-threaded programs that override the setting via
98d88c8d
MS
2146the <a href="#cupsSetPasswordCB2"><code>cupsSetPasswordCB2</code></a> function need to do so in each thread for the
2147same function to be used.
798d6e29 2148
798d6e29 2149</p>
798d6e29
MS
2150<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="cupsLocalizeDestMedia">cupsLocalizeDestMedia</a></h3>
2151 <p class="description">Get the localized string for a destination media
2152size.</p>
2153<p class="code">
98d88c8d
MS
2154const 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>
2155<h4 class="parameters">Parameters</h4>
2156<table class="list"><tbody>
2157<tr><th>http</th>
2158 <td class="description">Connection to destination</td></tr>
2159<tr><th>dest</th>
2160 <td class="description">Destination</td></tr>
2161<tr><th>dinfo</th>
2162 <td class="description">Destination information</td></tr>
2163<tr><th>flags</th>
2164 <td class="description">Media flags</td></tr>
2165<tr><th>size</th>
2166 <td class="description">Media size</td></tr>
2167</tbody></table>
798d6e29
MS
2168<h4 class="returnvalue">Return Value</h4>
2169 <p class="description">Localized string</p>
2170<h4 class="discussion">Discussion</h4>
2171 <p class="discussion">The returned string is stored in the destination information and will become
2172invalid if the destination information is deleted.
2173
2174</p>
2175<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsLocalizeDestOption">cupsLocalizeDestOption</a></h3>
2176 <p class="description">Get the localized string for a destination
2177option.</p>
2178<p class="code">
98d88c8d
MS
2179const 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>
2180<h4 class="parameters">Parameters</h4>
2181<table class="list"><tbody>
2182<tr><th>http</th>
2183 <td class="description">Connection to destination</td></tr>
2184<tr><th>dest</th>
2185 <td class="description">Destination</td></tr>
2186<tr><th>dinfo</th>
2187 <td class="description">Destination information</td></tr>
2188<tr><th>option</th>
2189 <td class="description">Option to localize</td></tr>
2190</tbody></table>
798d6e29
MS
2191<h4 class="returnvalue">Return Value</h4>
2192 <p class="description">Localized string</p>
2193<h4 class="discussion">Discussion</h4>
2194 <p class="discussion">The returned string is stored in the destination information and will become
2195invalid if the destination information is deleted.
2196
2197</p>
2198<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsLocalizeDestValue">cupsLocalizeDestValue</a></h3>
2199 <p class="description">Get the localized string for a destination
2200option+value pair.</p>
2201<p class="code">
98d88c8d
MS
2202const 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>
2203<h4 class="parameters">Parameters</h4>
2204<table class="list"><tbody>
2205<tr><th>http</th>
2206 <td class="description">Connection to destination</td></tr>
2207<tr><th>dest</th>
2208 <td class="description">Destination</td></tr>
2209<tr><th>dinfo</th>
2210 <td class="description">Destination information</td></tr>
2211<tr><th>option</th>
2212 <td class="description">Option to localize</td></tr>
2213<tr><th>value</th>
2214 <td class="description">Value to localize</td></tr>
2215</tbody></table>
798d6e29
MS
2216<h4 class="returnvalue">Return Value</h4>
2217 <p class="description">Localized string</p>
2218<h4 class="discussion">Discussion</h4>
2219 <p class="discussion">The returned string is stored in the destination information and will become
2220invalid if the destination information is deleted.
2221
2222</p>
2223<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="cupsMakeServerCredentials">cupsMakeServerCredentials</a></h3>
2224 <p class="description">Make a self-signed certificate and private key pair.</p>
2225<p class="code">
98d88c8d
MS
2226int cupsMakeServerCredentials(const char *path, const char *common_name, int num_alt_names, const char **alt_names, time_t expiration_date);</p>
2227<h4 class="parameters">Parameters</h4>
2228<table class="list"><tbody>
2229<tr><th>path</th>
2230 <td class="description">Keychain path or <code>NULL</code> for default</td></tr>
2231<tr><th>common_name</th>
2232 <td class="description">Common name</td></tr>
2233<tr><th>num_alt_names</th>
2234 <td class="description">Number of subject alternate names</td></tr>
2235<tr><th>alt_names</th>
2236 <td class="description">Subject Alternate Names</td></tr>
2237<tr><th>expiration_date</th>
2238 <td class="description">Expiration date</td></tr>
2239</tbody></table>
798d6e29
MS
2240<h4 class="returnvalue">Return Value</h4>
2241 <p class="description">1 on success, 0 on failure</p>
798d6e29
MS
2242<h3 class="function"><a id="cupsParseOptions">cupsParseOptions</a></h3>
2243 <p class="description">Parse options from a command-line argument.</p>
2244<p class="code">
98d88c8d
MS
2245int cupsParseOptions(const char *arg, int num_options, <a href="#cups_option_t">cups_option_t</a> **options);</p>
2246<h4 class="parameters">Parameters</h4>
2247<table class="list"><tbody>
2248<tr><th>arg</th>
2249 <td class="description">Argument to parse</td></tr>
2250<tr><th>num_options</th>
2251 <td class="description">Number of options</td></tr>
2252<tr><th>options</th>
2253 <td class="description">Options found</td></tr>
2254</tbody></table>
798d6e29
MS
2255<h4 class="returnvalue">Return Value</h4>
2256 <p class="description">Number of options found</p>
2257<h4 class="discussion">Discussion</h4>
2258 <p class="discussion">This function converts space-delimited name/value pairs according
2259to the PAPI text option ABNF specification. Collection values
2260(&quot;name={a=... b=... c=...}&quot;) are stored with the curley brackets
2261intact - use <code>cupsParseOptions</code> on the value to extract the
2262collection attributes.</p>
798d6e29
MS
2263<h3 class="function"><span class="info">&#160;CUPS 1.3/macOS 10.5&#160;</span><a id="cupsRemoveDest">cupsRemoveDest</a></h3>
2264 <p class="description">Remove a destination from the destination list.</p>
2265<p class="code">
98d88c8d
MS
2266int cupsRemoveDest(const char *name, const char *instance, int num_dests, <a href="#cups_dest_t">cups_dest_t</a> **dests);</p>
2267<h4 class="parameters">Parameters</h4>
2268<table class="list"><tbody>
2269<tr><th>name</th>
2270 <td class="description">Destination name</td></tr>
2271<tr><th>instance</th>
2272 <td class="description">Instance name or <code>NULL</code></td></tr>
2273<tr><th>num_dests</th>
2274 <td class="description">Number of destinations</td></tr>
2275<tr><th>dests</th>
2276 <td class="description">Destinations</td></tr>
2277</tbody></table>
798d6e29
MS
2278<h4 class="returnvalue">Return Value</h4>
2279 <p class="description">New number of destinations</p>
2280<h4 class="discussion">Discussion</h4>
2281 <p class="discussion">Removing a destination/instance does not delete the class or printer
2282queue, merely the lpoptions for that destination/instance. Use the
2283<a href="#cupsSetDests"><code>cupsSetDests</code></a> or <a href="#cupsSetDests2"><code>cupsSetDests2</code></a> functions to save the new
2284options for the user.
2285
2286</p>
2287<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="cupsRemoveOption">cupsRemoveOption</a></h3>
2288 <p class="description">Remove an option from an option array.</p>
2289<p class="code">
98d88c8d
MS
2290int cupsRemoveOption(const char *name, int num_options, <a href="#cups_option_t">cups_option_t</a> **options);</p>
2291<h4 class="parameters">Parameters</h4>
2292<table class="list"><tbody>
2293<tr><th>name</th>
2294 <td class="description">Option name</td></tr>
2295<tr><th>num_options</th>
2296 <td class="description">Current number of options</td></tr>
2297<tr><th>options</th>
2298 <td class="description">Options</td></tr>
2299</tbody></table>
798d6e29
MS
2300<h4 class="returnvalue">Return Value</h4>
2301 <p class="description">New number of options</p>
2302<h3 class="function"><a id="cupsServer">cupsServer</a></h3>
2303 <p class="description">Return the hostname/address of the current server.</p>
2304<p class="code">
98d88c8d 2305const char *cupsServer(void);</p>
798d6e29
MS
2306<h4 class="returnvalue">Return Value</h4>
2307 <p class="description">Server name</p>
2308<h4 class="discussion">Discussion</h4>
2309 <p class="discussion">The default server comes from the CUPS_SERVER environment variable, then the
2310~/.cups/client.conf file, and finally the /etc/cups/client.conf file. If not
2311set, the default is the local system - either &quot;localhost&quot; or a domain socket
2312path.<br>
2313<br>
2314The returned value can be a fully-qualified hostname, a numeric IPv4 or IPv6
2315address, or a domain socket pathname.<br>
2316<br>
2317Note: The current server is tracked separately for each thread in a program.
2318Multi-threaded programs that override the server via the
2319<a href="#cupsSetServer"><code>cupsSetServer</code></a> function need to do so in each thread for the same
2320server to be used.</p>
98d88c8d
MS
2321<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="cupsSetClientCertCB">cupsSetClientCertCB</a></h3>
2322 <p class="description">Set the client certificate callback.</p>
798d6e29 2323<p class="code">
98d88c8d 2324void cupsSetClientCertCB(<a href="#cups_client_cert_cb_t">cups_client_cert_cb_t</a> cb, void *user_data);</p>
798d6e29 2325<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2326<table class="list"><tbody>
2327<tr><th>cb</th>
2328 <td class="description">Callback function</td></tr>
2329<tr><th>user_data</th>
2330 <td class="description">User data pointer</td></tr>
2331</tbody></table>
2332<h4 class="discussion">Discussion</h4>
798d6e29
MS
2333 <p class="discussion">Pass <code>NULL</code> to restore the default callback.<br>
2334<br>
2335Note: The current certificate callback is tracked separately for each thread
2336in a program. Multi-threaded programs that override the callback need to do
2337so in each thread for the same callback to be used.
2338
2339</p>
2340<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="cupsSetCredentials">cupsSetCredentials</a></h3>
2341 <p class="description">Set the default credentials to be used for SSL/TLS
2342connections.</p>
2343<p class="code">
98d88c8d 2344int cupsSetCredentials(cups_array_t *credentials);</p>
798d6e29 2345<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2346<table class="list"><tbody>
2347<tr><th>credentials</th>
2348 <td class="description">Array of credentials</td></tr>
2349</tbody></table>
798d6e29
MS
2350<h4 class="returnvalue">Return Value</h4>
2351 <p class="description">Status of call (0 = success)</p>
2352<h4 class="discussion">Discussion</h4>
2353 <p class="discussion">Note: The default credentials are tracked separately for each thread in a
2354program. Multi-threaded programs that override the setting need to do so in
2355each thread for the same setting to be used.
2356
2357</p>
98d88c8d 2358<h3 class="function"><span class="info">&#160;CUPS 1.3/macOS 10.5&#160;</span><a id="cupsSetDefaultDest">cupsSetDefaultDest</a></h3>
53af7f21 2359 <p class="description">Set the default destination.</p>
98d88c8d
MS
2360<p class="code">
2361void cupsSetDefaultDest(const char *name, const char *instance, int num_dests, <a href="#cups_dest_t">cups_dest_t</a> *dests);</p>
2362<h4 class="parameters">Parameters</h4>
2363<table class="list"><tbody>
2364<tr><th>name</th>
2365 <td class="description">Destination name</td></tr>
2366<tr><th>instance</th>
2367 <td class="description">Instance name or <code>NULL</code></td></tr>
2368<tr><th>num_dests</th>
2369 <td class="description">Number of destinations</td></tr>
2370<tr><th>dests</th>
2371 <td class="description">Destinations</td></tr>
2372</tbody></table>
798d6e29
MS
2373<h3 class="function"><span class="info">&#160;CUPS 1.1.21/macOS 10.4&#160;</span><a id="cupsSetDests2">cupsSetDests2</a></h3>
2374 <p class="description">Save the list of destinations for the specified server.</p>
2375<p class="code">
98d88c8d
MS
2376int cupsSetDests2(<a href="#http_t">http_t</a> *http, int num_dests, <a href="#cups_dest_t">cups_dest_t</a> *dests);</p>
2377<h4 class="parameters">Parameters</h4>
2378<table class="list"><tbody>
2379<tr><th>http</th>
2380 <td class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></td></tr>
2381<tr><th>num_dests</th>
2382 <td class="description">Number of destinations</td></tr>
2383<tr><th>dests</th>
2384 <td class="description">Destinations</td></tr>
2385</tbody></table>
798d6e29
MS
2386<h4 class="returnvalue">Return Value</h4>
2387 <p class="description">0 on success, -1 on error</p>
2388<h4 class="discussion">Discussion</h4>
2389 <p class="discussion">This function saves the destinations to /etc/cups/lpoptions when run
2390as root and ~/.cups/lpoptions when run as a normal user.
2391
2392</p>
2393<h3 class="function"><a id="cupsSetEncryption">cupsSetEncryption</a></h3>
98d88c8d 2394 <p class="description">Set the encryption preference.</p>
798d6e29 2395<p class="code">
98d88c8d 2396void cupsSetEncryption(<a href="#http_encryption_t">http_encryption_t</a> e);</p>
798d6e29 2397<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2398<table class="list"><tbody>
2399<tr><th>e</th>
2400 <td class="description">New encryption preference</td></tr>
2401</tbody></table>
2402<h4 class="discussion">Discussion</h4>
798d6e29
MS
2403 <p class="discussion">The default encryption setting comes from the CUPS_ENCRYPTION
2404environment variable, then the ~/.cups/client.conf file, and finally the
2405/etc/cups/client.conf file. If not set, the default is
2406<code>HTTP_ENCRYPTION_IF_REQUESTED</code>.<br>
2407<br>
2408Note: The current encryption setting is tracked separately for each thread
2409in a program. Multi-threaded programs that override the setting need to do
2410so in each thread for the same setting to be used.</p>
98d88c8d
MS
2411<h3 class="function"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span><a id="cupsSetPasswordCB2">cupsSetPasswordCB2</a></h3>
2412 <p class="description">Set the advanced password callback for CUPS.</p>
798d6e29 2413<p class="code">
98d88c8d 2414void cupsSetPasswordCB2(<a href="#cups_password_cb2_t">cups_password_cb2_t</a> cb, void *user_data);</p>
798d6e29 2415<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2416<table class="list"><tbody>
2417<tr><th>cb</th>
2418 <td class="description">Callback function</td></tr>
2419<tr><th>user_data</th>
2420 <td class="description">User data pointer</td></tr>
2421</tbody></table>
2422<h4 class="discussion">Discussion</h4>
798d6e29
MS
2423 <p class="discussion">Pass <code>NULL</code> to restore the default (console) password callback, which
2424reads the password from the console. Programs should call either this
2425function or <a href="#cupsSetPasswordCB2"><code>cupsSetPasswordCB2</code></a>, as only one callback can be registered
2426by a program per thread.<br>
2427<br>
2428Note: The current password callback is tracked separately for each thread
2429in a program. Multi-threaded programs that override the callback need to do
2430so in each thread for the same callback to be used.
2431
2432</p>
2433<h3 class="function"><a id="cupsSetServer">cupsSetServer</a></h3>
98d88c8d 2434 <p class="description">Set the default server name and port.</p>
798d6e29 2435<p class="code">
98d88c8d 2436void cupsSetServer(const char *server);</p>
798d6e29 2437<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2438<table class="list"><tbody>
2439<tr><th>server</th>
2440 <td class="description">Server name</td></tr>
2441</tbody></table>
2442<h4 class="discussion">Discussion</h4>
798d6e29
MS
2443 <p class="discussion">The &quot;server&quot; string can be a fully-qualified hostname, a numeric
2444IPv4 or IPv6 address, or a domain socket pathname. Hostnames and numeric IP
2445addresses can be optionally followed by a colon and port number to override
2446the default port 631, e.g. &quot;hostname:8631&quot;. Pass <code>NULL</code> to restore the
2447default server name and port.<br>
2448<br>
2449Note: The current server is tracked separately for each thread in a program.
2450Multi-threaded programs that override the server need to do so in each
2451thread for the same server to be used.</p>
98d88c8d
MS
2452<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="cupsSetServerCertCB">cupsSetServerCertCB</a></h3>
2453 <p class="description">Set the server certificate callback.</p>
798d6e29 2454<p class="code">
98d88c8d 2455void cupsSetServerCertCB(<a href="#cups_server_cert_cb_t">cups_server_cert_cb_t</a> cb, void *user_data);</p>
798d6e29 2456<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2457<table class="list"><tbody>
2458<tr><th>cb</th>
2459 <td class="description">Callback function</td></tr>
2460<tr><th>user_data</th>
2461 <td class="description">User data pointer</td></tr>
2462</tbody></table>
2463<h4 class="discussion">Discussion</h4>
798d6e29
MS
2464 <p class="discussion">Pass <code>NULL</code> to restore the default callback.<br>
2465<br>
2466Note: The current credentials callback is tracked separately for each thread
2467in a program. Multi-threaded programs that override the callback need to do
2468so in each thread for the same callback to be used.
2469
2470</p>
2471<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="cupsSetServerCredentials">cupsSetServerCredentials</a></h3>
2472 <p class="description">Set the default server credentials.</p>
2473<p class="code">
98d88c8d
MS
2474int cupsSetServerCredentials(const char *path, const char *common_name, int auto_create);</p>
2475<h4 class="parameters">Parameters</h4>
2476<table class="list"><tbody>
2477<tr><th>path</th>
2478 <td class="description">Keychain path or <code>NULL</code> for default</td></tr>
2479<tr><th>common_name</th>
2480 <td class="description">Default common name for server</td></tr>
2481<tr><th>auto_create</th>
2482 <td class="description">1 = automatically create self-signed certificates</td></tr>
2483</tbody></table>
798d6e29
MS
2484<h4 class="returnvalue">Return Value</h4>
2485 <p class="description">1 on success, 0 on failure</p>
2486<h4 class="discussion">Discussion</h4>
2487 <p class="discussion">Note: The server credentials are used by all threads in the running process.
2488This function is threadsafe.
2489
2490</p>
2491<h3 class="function"><a id="cupsSetUser">cupsSetUser</a></h3>
98d88c8d 2492 <p class="description">Set the default user name.</p>
798d6e29 2493<p class="code">
98d88c8d 2494void cupsSetUser(const char *user);</p>
798d6e29 2495<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2496<table class="list"><tbody>
2497<tr><th>user</th>
2498 <td class="description">User name</td></tr>
2499</tbody></table>
2500<h4 class="discussion">Discussion</h4>
798d6e29
MS
2501 <p class="discussion">Pass <code>NULL</code> to restore the default user name.<br>
2502<br>
2503Note: The current user name is tracked separately for each thread in a
2504program. Multi-threaded programs that override the user name need to do so
2505in each thread for the same user name to be used.</p>
98d88c8d
MS
2506<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsSetUserAgent">cupsSetUserAgent</a></h3>
2507 <p class="description">Set the default HTTP User-Agent string.</p>
798d6e29 2508<p class="code">
98d88c8d 2509void cupsSetUserAgent(const char *user_agent);</p>
798d6e29 2510<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2511<table class="list"><tbody>
2512<tr><th>user_agent</th>
2513 <td class="description">User-Agent string or <code>NULL</code></td></tr>
2514</tbody></table>
2515<h4 class="discussion">Discussion</h4>
798d6e29
MS
2516 <p class="discussion">Setting the string to NULL forces the default value containing the CUPS
2517version, IPP version, and operating system version and architecture.
2518
2519</p>
2520<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="cupsStartDestDocument">cupsStartDestDocument</a></h3>
2521 <p class="description">Start a new document.</p>
2522<p class="code">
98d88c8d
MS
2523http_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>
2524<h4 class="parameters">Parameters</h4>
2525<table class="list"><tbody>
2526<tr><th>http</th>
2527 <td class="description">Connection to destination</td></tr>
2528<tr><th>dest</th>
2529 <td class="description">Destination</td></tr>
2530<tr><th>info</th>
2531 <td class="description">Destination information</td></tr>
2532<tr><th>job_id</th>
2533 <td class="description">Job ID</td></tr>
2534<tr><th>docname</th>
2535 <td class="description">Document name</td></tr>
2536<tr><th>format</th>
2537 <td class="description">Document format</td></tr>
2538<tr><th>num_options</th>
2539 <td class="description">Number of document options</td></tr>
2540<tr><th>options</th>
2541 <td class="description">Document options</td></tr>
2542<tr><th>last_document</th>
2543 <td class="description">1 if this is the last document</td></tr>
2544</tbody></table>
798d6e29
MS
2545<h4 class="returnvalue">Return Value</h4>
2546 <p class="description">Status of document creation</p>
2547<h4 class="discussion">Discussion</h4>
2548 <p class="discussion">&quot;job_id&quot; is the job ID returned by cupsCreateDestJob. &quot;docname&quot; is the name
2549of the document/file being printed, &quot;format&quot; is the MIME media type for the
2550document (see CUPS_FORMAT_xxx constants), and &quot;num_options&quot; and &quot;options&quot;
2551are the options do be applied to the document. &quot;last_document&quot; should be 1
2552if this is the last document to be submitted in the job. Returns
2553<code>HTTP_CONTINUE</code> on success.
2554
798d6e29
MS
2555</p>
2556<h3 class="function"><a id="cupsUser">cupsUser</a></h3>
2557 <p class="description">Return the current user's name.</p>
2558<p class="code">
98d88c8d 2559const char *cupsUser(void);</p>
798d6e29
MS
2560<h4 class="returnvalue">Return Value</h4>
2561 <p class="description">User name</p>
2562<h4 class="discussion">Discussion</h4>
2563 <p class="discussion">Note: The current user name is tracked separately for each thread in a
2564program. Multi-threaded programs that override the user name with the
2565<a href="#cupsSetUser"><code>cupsSetUser</code></a> function need to do so in each thread for the same user
2566name to be used.</p>
2567<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="cupsUserAgent">cupsUserAgent</a></h3>
2568 <p class="description">Return the default HTTP User-Agent string.</p>
2569<p class="code">
98d88c8d 2570const char *cupsUserAgent(void);</p>
798d6e29
MS
2571<h4 class="returnvalue">Return Value</h4>
2572 <p class="description">User-Agent string</p>
2573<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAcceptConnection">httpAcceptConnection</a></h3>
2574 <p class="description">Accept a new HTTP client connection from the
2575specified listening socket.</p>
2576<p class="code">
98d88c8d 2577<a href="#http_t">http_t</a> *httpAcceptConnection(int fd, int blocking);</p>
798d6e29 2578<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2579<table class="list"><tbody>
2580<tr><th>fd</th>
2581 <td class="description">Listen socket file descriptor</td></tr>
2582<tr><th>blocking</th>
2583 <td class="description">1 if the connection should be
2584blocking, 0 otherwise</td></tr>
2585</tbody></table>
798d6e29
MS
2586<h4 class="returnvalue">Return Value</h4>
2587 <p class="description">HTTP connection or <code>NULL</code></p>
2588<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="httpAddCredential">httpAddCredential</a></h3>
2589 <p class="description">Allocates and adds a single credential to an array.</p>
2590<p class="code">
98d88c8d
MS
2591int httpAddCredential(cups_array_t *credentials, const void *data, size_t datalen);</p>
2592<h4 class="parameters">Parameters</h4>
2593<table class="list"><tbody>
2594<tr><th>credentials</th>
2595 <td class="description">Credentials array</td></tr>
2596<tr><th>data</th>
2597 <td class="description">PEM-encoded X.509 data</td></tr>
2598<tr><th>datalen</th>
2599 <td class="description">Length of data</td></tr>
2600</tbody></table>
798d6e29
MS
2601<h4 class="returnvalue">Return Value</h4>
2602 <p class="description">0 on success, -1 on error</p>
2603<h4 class="discussion">Discussion</h4>
2604 <p class="discussion">Use <code>cupsArrayNew(NULL, NULL)</code> to create a credentials array.
2605
2606</p>
2607<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrAny">httpAddrAny</a></h3>
2608 <p class="description">Check for the &quot;any&quot; address.</p>
2609<p class="code">
98d88c8d 2610int httpAddrAny(const <a href="#http_addr_t">http_addr_t</a> *addr);</p>
798d6e29 2611<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2612<table class="list"><tbody>
2613<tr><th>addr</th>
2614 <td class="description">Address to check</td></tr>
2615</tbody></table>
798d6e29
MS
2616<h4 class="returnvalue">Return Value</h4>
2617 <p class="description">1 if &quot;any&quot;, 0 otherwise</p>
2618<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpAddrClose">httpAddrClose</a></h3>
2619 <p class="description">Close a socket created by <a href="#httpAddrConnect"><code>httpAddrConnect</code></a> or
2620<a href="#httpAddrListen"><code>httpAddrListen</code></a>.</p>
2621<p class="code">
98d88c8d 2622int httpAddrClose(<a href="#http_addr_t">http_addr_t</a> *addr, int fd);</p>
798d6e29 2623<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2624<table class="list"><tbody>
2625<tr><th>addr</th>
2626 <td class="description">Listen address or <code>NULL</code></td></tr>
2627<tr><th>fd</th>
2628 <td class="description">Socket file descriptor</td></tr>
2629</tbody></table>
798d6e29
MS
2630<h4 class="returnvalue">Return Value</h4>
2631 <p class="description">0 on success, -1 on failure</p>
2632<h4 class="discussion">Discussion</h4>
98d88c8d
MS
2633 <p class="discussion">Pass <code>NULL</code> for sockets created with <a href="#httpAddrConnect2"><code>httpAddrConnect2</code></a> and the
2634listen address for sockets created with <a href="#httpAddrListen"><code>httpAddrListen</code></a>. This function
2635ensures that domain sockets are removed when closed.
798d6e29
MS
2636
2637</p>
798d6e29
MS
2638<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAddrConnect2">httpAddrConnect2</a></h3>
2639 <p class="description">Connect to any of the addresses in the list with a
2640timeout and optional cancel.</p>
2641<p class="code">
98d88c8d
MS
2642<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>
2643<h4 class="parameters">Parameters</h4>
2644<table class="list"><tbody>
2645<tr><th>addrlist</th>
2646 <td class="description">List of potential addresses</td></tr>
2647<tr><th>sock</th>
2648 <td class="description">Socket</td></tr>
2649<tr><th>msec</th>
2650 <td class="description">Timeout in milliseconds</td></tr>
2651<tr><th>cancel</th>
2652 <td class="description">Pointer to &quot;cancel&quot; variable</td></tr>
2653</tbody></table>
798d6e29
MS
2654<h4 class="returnvalue">Return Value</h4>
2655 <p class="description">Connected address or NULL on failure</p>
2656<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAddrCopyList">httpAddrCopyList</a></h3>
2657 <p class="description">Copy an address list.</p>
2658<p class="code">
98d88c8d 2659<a href="#http_addrlist_t">http_addrlist_t</a> *httpAddrCopyList(<a href="#http_addrlist_t">http_addrlist_t</a> *src);</p>
798d6e29 2660<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2661<table class="list"><tbody>
2662<tr><th>src</th>
2663 <td class="description">Source address list</td></tr>
2664</tbody></table>
798d6e29
MS
2665<h4 class="returnvalue">Return Value</h4>
2666 <p class="description">New address list or <code>NULL</code> on error</p>
2667<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrEqual">httpAddrEqual</a></h3>
2668 <p class="description">Compare two addresses.</p>
2669<p class="code">
98d88c8d 2670int 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 2671<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2672<table class="list"><tbody>
2673<tr><th>addr1</th>
2674 <td class="description">First address</td></tr>
2675<tr><th>addr2</th>
2676 <td class="description">Second address</td></tr>
2677</tbody></table>
798d6e29
MS
2678<h4 class="returnvalue">Return Value</h4>
2679 <p class="description">1 if equal, 0 if not</p>
2680<h3 class="function"><a id="httpAddrFamily">httpAddrFamily</a></h3>
2681 <p class="description">Get the address family of an address.</p>
2682<p class="code">
98d88c8d 2683int httpAddrFamily(<a href="#http_addr_t">http_addr_t</a> *addr);</p>
798d6e29 2684<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2685<table class="list"><tbody>
2686<tr><th>addr</th>
2687 <td class="description">Address</td></tr>
2688</tbody></table>
798d6e29
MS
2689<h4 class="returnvalue">Return Value</h4>
2690 <p class="description">Address family</p>
98d88c8d
MS
2691<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrFreeList">httpAddrFreeList</a></h3>
2692 <p class="description">Free an address list.</p>
798d6e29 2693<p class="code">
98d88c8d 2694void httpAddrFreeList(<a href="#http_addrlist_t">http_addrlist_t</a> *addrlist);</p>
798d6e29 2695<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2696<table class="list"><tbody>
2697<tr><th>addrlist</th>
2698 <td class="description">Address list to free</td></tr>
2699</tbody></table>
798d6e29
MS
2700<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrGetList">httpAddrGetList</a></h3>
2701 <p class="description">Get a list of addresses for a hostname.</p>
2702<p class="code">
98d88c8d
MS
2703<a href="#http_addrlist_t">http_addrlist_t</a> *httpAddrGetList(const char *hostname, int family, const char *service);</p>
2704<h4 class="parameters">Parameters</h4>
2705<table class="list"><tbody>
2706<tr><th>hostname</th>
2707 <td class="description">Hostname, IP address, or NULL for passive listen address</td></tr>
2708<tr><th>family</th>
2709 <td class="description">Address family or AF_UNSPEC</td></tr>
2710<tr><th>service</th>
2711 <td class="description">Service name or port number</td></tr>
2712</tbody></table>
798d6e29
MS
2713<h4 class="returnvalue">Return Value</h4>
2714 <p class="description">List of addresses or NULL</p>
2715<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrLength">httpAddrLength</a></h3>
2716 <p class="description">Return the length of the address in bytes.</p>
2717<p class="code">
98d88c8d 2718int httpAddrLength(const <a href="#http_addr_t">http_addr_t</a> *addr);</p>
798d6e29 2719<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2720<table class="list"><tbody>
2721<tr><th>addr</th>
2722 <td class="description">Address</td></tr>
2723</tbody></table>
798d6e29
MS
2724<h4 class="returnvalue">Return Value</h4>
2725 <p class="description">Length in bytes</p>
2726<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAddrListen">httpAddrListen</a></h3>
2727 <p class="description">Create a listening socket bound to the specified
2728address and port.</p>
2729<p class="code">
98d88c8d 2730int httpAddrListen(<a href="#http_addr_t">http_addr_t</a> *addr, int port);</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 to bind to</td></tr>
2735<tr><th>port</th>
2736 <td class="description">Port number to bind to</td></tr>
2737</tbody></table>
798d6e29
MS
2738<h4 class="returnvalue">Return Value</h4>
2739 <p class="description">Socket or -1 on error</p>
2740<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrLocalhost">httpAddrLocalhost</a></h3>
2741 <p class="description">Check for the local loopback address.</p>
2742<p class="code">
98d88c8d 2743int httpAddrLocalhost(const <a href="#http_addr_t">http_addr_t</a> *addr);</p>
798d6e29 2744<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2745<table class="list"><tbody>
2746<tr><th>addr</th>
2747 <td class="description">Address to check</td></tr>
2748</tbody></table>
798d6e29
MS
2749<h4 class="returnvalue">Return Value</h4>
2750 <p class="description">1 if local host, 0 otherwise</p>
2751<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrLookup">httpAddrLookup</a></h3>
2752 <p class="description">Lookup the hostname associated with the address.</p>
2753<p class="code">
98d88c8d
MS
2754char *httpAddrLookup(const <a href="#http_addr_t">http_addr_t</a> *addr, char *name, int namelen);</p>
2755<h4 class="parameters">Parameters</h4>
2756<table class="list"><tbody>
2757<tr><th>addr</th>
2758 <td class="description">Address to lookup</td></tr>
2759<tr><th>name</th>
2760 <td class="description">Host name buffer</td></tr>
2761<tr><th>namelen</th>
2762 <td class="description">Size of name buffer</td></tr>
2763</tbody></table>
798d6e29
MS
2764<h4 class="returnvalue">Return Value</h4>
2765 <p class="description">Host name</p>
2766<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAddrPort">httpAddrPort</a></h3>
2767 <p class="description">Get the port number associated with an address.</p>
2768<p class="code">
98d88c8d 2769int httpAddrPort(<a href="#http_addr_t">http_addr_t</a> *addr);</p>
798d6e29 2770<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2771<table class="list"><tbody>
2772<tr><th>addr</th>
2773 <td class="description">Address</td></tr>
2774</tbody></table>
798d6e29
MS
2775<h4 class="returnvalue">Return Value</h4>
2776 <p class="description">Port number</p>
2777<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAddrString">httpAddrString</a></h3>
2778 <p class="description">Convert an address to a numeric string.</p>
2779<p class="code">
98d88c8d
MS
2780char *httpAddrString(const <a href="#http_addr_t">http_addr_t</a> *addr, char *s, int slen);</p>
2781<h4 class="parameters">Parameters</h4>
2782<table class="list"><tbody>
2783<tr><th>addr</th>
2784 <td class="description">Address to convert</td></tr>
2785<tr><th>s</th>
2786 <td class="description">String buffer</td></tr>
2787<tr><th>slen</th>
2788 <td class="description">Length of string</td></tr>
2789</tbody></table>
798d6e29
MS
2790<h4 class="returnvalue">Return Value</h4>
2791 <p class="description">Numeric address string</p>
2792<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAssembleURI">httpAssembleURI</a></h3>
2793 <p class="description">Assemble a uniform resource identifier from its
2794components.</p>
2795<p class="code">
98d88c8d
MS
2796<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>
2797<h4 class="parameters">Parameters</h4>
2798<table class="list"><tbody>
2799<tr><th>encoding</th>
2800 <td class="description">Encoding flags</td></tr>
2801<tr><th>uri</th>
2802 <td class="description">URI buffer</td></tr>
2803<tr><th>urilen</th>
2804 <td class="description">Size of URI buffer</td></tr>
2805<tr><th>scheme</th>
2806 <td class="description">Scheme name</td></tr>
2807<tr><th>username</th>
2808 <td class="description">Username</td></tr>
2809<tr><th>host</th>
2810 <td class="description">Hostname or address</td></tr>
2811<tr><th>port</th>
2812 <td class="description">Port number</td></tr>
2813<tr><th>resource</th>
2814 <td class="description">Resource</td></tr>
2815</tbody></table>
798d6e29
MS
2816<h4 class="returnvalue">Return Value</h4>
2817 <p class="description">URI status</p>
2818<h4 class="discussion">Discussion</h4>
2819 <p class="discussion">This function escapes reserved characters in the URI depending on the
2820value of the &quot;encoding&quot; argument. You should use this function in
2821place of traditional string functions whenever you need to create a
2822URI string.
2823
2824</p>
2825<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpAssembleURIf">httpAssembleURIf</a></h3>
2826 <p class="description">Assemble a uniform resource identifier from its
2827components with a formatted resource.</p>
2828<p class="code">
98d88c8d
MS
2829<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>
2830<h4 class="parameters">Parameters</h4>
2831<table class="list"><tbody>
2832<tr><th>encoding</th>
2833 <td class="description">Encoding flags</td></tr>
2834<tr><th>uri</th>
2835 <td class="description">URI buffer</td></tr>
2836<tr><th>urilen</th>
2837 <td class="description">Size of URI buffer</td></tr>
2838<tr><th>scheme</th>
2839 <td class="description">Scheme name</td></tr>
2840<tr><th>username</th>
2841 <td class="description">Username</td></tr>
2842<tr><th>host</th>
2843 <td class="description">Hostname or address</td></tr>
2844<tr><th>port</th>
2845 <td class="description">Port number</td></tr>
2846<tr><th>resourcef</th>
2847 <td class="description">Printf-style resource</td></tr>
2848<tr><th>...</th>
2849 <td class="description">Additional arguments as needed</td></tr>
2850</tbody></table>
798d6e29
MS
2851<h4 class="returnvalue">Return Value</h4>
2852 <p class="description">URI status</p>
2853<h4 class="discussion">Discussion</h4>
2854 <p class="discussion">This function creates a formatted version of the resource string
2855argument &quot;resourcef&quot; and escapes reserved characters in the URI
2856depending on the value of the &quot;encoding&quot; argument. You should use
2857this function in place of traditional string functions whenever
2858you need to create a URI string.
2859
2860</p>
2861<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpAssembleUUID">httpAssembleUUID</a></h3>
2862 <p class="description">Assemble a name-based UUID URN conforming to RFC 4122.</p>
2863<p class="code">
98d88c8d
MS
2864char *httpAssembleUUID(const char *server, int port, const char *name, int number, char *buffer, size_t bufsize);</p>
2865<h4 class="parameters">Parameters</h4>
2866<table class="list"><tbody>
2867<tr><th>server</th>
2868 <td class="description">Server name</td></tr>
2869<tr><th>port</th>
2870 <td class="description">Port number</td></tr>
2871<tr><th>name</th>
2872 <td class="description">Object name or NULL</td></tr>
2873<tr><th>number</th>
2874 <td class="description">Object number or 0</td></tr>
2875<tr><th>buffer</th>
2876 <td class="description">String buffer</td></tr>
2877<tr><th>bufsize</th>
2878 <td class="description">Size of buffer</td></tr>
2879</tbody></table>
798d6e29
MS
2880<h4 class="returnvalue">Return Value</h4>
2881 <p class="description">UUID string</p>
2882<h4 class="discussion">Discussion</h4>
2883 <p class="discussion">This function creates a unique 128-bit identifying number using the server
2884name, port number, random data, and optionally an object name and/or object
2885number. The result is formatted as a UUID URN as defined in RFC 4122.<br>
2886<br>
2887The buffer needs to be at least 46 bytes in size.
2888
2889</p>
2890<h3 class="function"><a id="httpBlocking">httpBlocking</a></h3>
98d88c8d 2891 <p class="description">Set blocking/non-blocking behavior on a connection.</p>
798d6e29 2892<p class="code">
98d88c8d 2893void httpBlocking(<a href="#http_t">http_t</a> *http, int b);</p>
798d6e29 2894<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2895<table class="list"><tbody>
2896<tr><th>http</th>
2897 <td class="description">HTTP connection</td></tr>
2898<tr><th>b</th>
2899 <td class="description">1 = blocking, 0 = non-blocking</td></tr>
2900</tbody></table>
798d6e29
MS
2901<h3 class="function"><a id="httpCheck">httpCheck</a></h3>
2902 <p class="description">Check to see if there is a pending response from the server.</p>
2903<p class="code">
98d88c8d 2904int httpCheck(<a href="#http_t">http_t</a> *http);</p>
798d6e29 2905<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2906<table class="list"><tbody>
2907<tr><th>http</th>
2908 <td class="description">HTTP connection</td></tr>
2909</tbody></table>
798d6e29
MS
2910<h4 class="returnvalue">Return Value</h4>
2911 <p class="description">0 = no data, 1 = data available</p>
98d88c8d
MS
2912<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="httpClearCookie">httpClearCookie</a></h3>
2913 <p class="description">Clear the cookie value(s).</p>
798d6e29 2914<p class="code">
98d88c8d 2915void httpClearCookie(<a href="#http_t">http_t</a> *http);</p>
798d6e29 2916<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2917<table class="list"><tbody>
2918<tr><th>http</th>
2919 <td class="description">HTTP connection</td></tr>
2920</tbody></table>
798d6e29 2921<h3 class="function"><a id="httpClearFields">httpClearFields</a></h3>
98d88c8d 2922 <p class="description">Clear HTTP request fields.</p>
798d6e29 2923<p class="code">
98d88c8d 2924void httpClearFields(<a href="#http_t">http_t</a> *http);</p>
798d6e29 2925<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2926<table class="list"><tbody>
2927<tr><th>http</th>
2928 <td class="description">HTTP connection</td></tr>
2929</tbody></table>
798d6e29 2930<h3 class="function"><a id="httpClose">httpClose</a></h3>
98d88c8d 2931 <p class="description">Close an HTTP connection.</p>
798d6e29 2932<p class="code">
98d88c8d 2933void httpClose(<a href="#http_t">http_t</a> *http);</p>
798d6e29 2934<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2935<table class="list"><tbody>
2936<tr><th>http</th>
2937 <td class="description">HTTP connection</td></tr>
2938</tbody></table>
798d6e29
MS
2939<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpCompareCredentials">httpCompareCredentials</a></h3>
2940 <p class="description">Compare two sets of X.509 credentials.</p>
2941<p class="code">
98d88c8d 2942int httpCompareCredentials(cups_array_t *cred1, cups_array_t *cred2);</p>
798d6e29 2943<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2944<table class="list"><tbody>
2945<tr><th>cred1</th>
2946 <td class="description">First set of X.509 credentials</td></tr>
2947<tr><th>cred2</th>
2948 <td class="description">Second set of X.509 credentials</td></tr>
2949</tbody></table>
53af7f21
MS
2950<h4 class="returnvalue">Return Value</h4>
2951 <p class="description">1 if they match, 0 if they do not</p>
798d6e29
MS
2952<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpConnect2">httpConnect2</a></h3>
2953 <p class="description">Connect to a HTTP server.</p>
2954<p class="code">
98d88c8d
MS
2955<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>
2956<h4 class="parameters">Parameters</h4>
2957<table class="list"><tbody>
2958<tr><th>host</th>
2959 <td class="description">Host to connect to</td></tr>
2960<tr><th>port</th>
2961 <td class="description">Port number</td></tr>
2962<tr><th>addrlist</th>
65bebeac 2963 <td class="description">List of addresses or <code>NULL</code> to lookup</td></tr>
98d88c8d
MS
2964<tr><th>family</th>
2965 <td class="description">Address family to use or <code>AF_UNSPEC</code> for any</td></tr>
2966<tr><th>encryption</th>
2967 <td class="description">Type of encryption to use</td></tr>
2968<tr><th>blocking</th>
2969 <td class="description">1 for blocking connection, 0 for non-blocking</td></tr>
2970<tr><th>msec</th>
2971 <td class="description">Connection timeout in milliseconds, 0 means don't connect</td></tr>
2972<tr><th>cancel</th>
2973 <td class="description">Pointer to &quot;cancel&quot; variable</td></tr>
2974</tbody></table>
798d6e29
MS
2975<h4 class="returnvalue">Return Value</h4>
2976 <p class="description">New HTTP connection</p>
798d6e29
MS
2977<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="httpCopyCredentials">httpCopyCredentials</a></h3>
2978 <p class="description">Copy the credentials associated with the peer in
2979an encrypted connection.</p>
2980<p class="code">
98d88c8d 2981int httpCopyCredentials(<a href="#http_t">http_t</a> *http, cups_array_t **credentials);</p>
798d6e29 2982<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2983<table class="list"><tbody>
2984<tr><th>http</th>
2985 <td class="description">Connection to server</td></tr>
2986<tr><th>credentials</th>
2987 <td class="description">Array of credentials</td></tr>
2988</tbody></table>
798d6e29
MS
2989<h4 class="returnvalue">Return Value</h4>
2990 <p class="description">Status of call (0 = success)</p>
2991<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="httpCredentialsAreValidForName">httpCredentialsAreValidForName</a></h3>
2992 <p class="description">Return whether the credentials are valid for the given name.</p>
2993<p class="code">
98d88c8d 2994int httpCredentialsAreValidForName(cups_array_t *credentials, const char *common_name);</p>
798d6e29 2995<h4 class="parameters">Parameters</h4>
98d88c8d
MS
2996<table class="list"><tbody>
2997<tr><th>credentials</th>
2998 <td class="description">Credentials</td></tr>
2999<tr><th>common_name</th>
3000 <td class="description">Name to check</td></tr>
3001</tbody></table>
798d6e29
MS
3002<h4 class="returnvalue">Return Value</h4>
3003 <p class="description">1 if valid, 0 otherwise</p>
3004<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="httpCredentialsGetExpiration">httpCredentialsGetExpiration</a></h3>
3005 <p class="description">Return the expiration date of the credentials.</p>
3006<p class="code">
98d88c8d 3007time_t httpCredentialsGetExpiration(cups_array_t *credentials);</p>
798d6e29 3008<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3009<table class="list"><tbody>
3010<tr><th>credentials</th>
3011 <td class="description">Credentials</td></tr>
3012</tbody></table>
798d6e29
MS
3013<h4 class="returnvalue">Return Value</h4>
3014 <p class="description">Expiration date of credentials</p>
3015<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="httpCredentialsGetTrust">httpCredentialsGetTrust</a></h3>
3016 <p class="description">Return the trust of credentials.</p>
3017<p class="code">
98d88c8d 3018<a href="#http_trust_t">http_trust_t</a> httpCredentialsGetTrust(cups_array_t *credentials, const char *common_name);</p>
798d6e29 3019<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3020<table class="list"><tbody>
3021<tr><th>credentials</th>
3022 <td class="description">Credentials</td></tr>
3023<tr><th>common_name</th>
3024 <td class="description">Common name for trust lookup</td></tr>
3025</tbody></table>
798d6e29
MS
3026<h4 class="returnvalue">Return Value</h4>
3027 <p class="description">Level of trust</p>
3028<h3 class="function"><span class="info">&#160;CUPS 2.0/macOS 10.10&#160;</span><a id="httpCredentialsString">httpCredentialsString</a></h3>
3029 <p class="description">Return a string representing the credentials.</p>
3030<p class="code">
98d88c8d
MS
3031size_t httpCredentialsString(cups_array_t *credentials, char *buffer, size_t bufsize);</p>
3032<h4 class="parameters">Parameters</h4>
3033<table class="list"><tbody>
3034<tr><th>credentials</th>
3035 <td class="description">Credentials</td></tr>
3036<tr><th>buffer</th>
3037 <td class="description">Buffer or <code>NULL</code></td></tr>
3038<tr><th>bufsize</th>
3039 <td class="description">Size of buffer</td></tr>
3040</tbody></table>
798d6e29
MS
3041<h4 class="returnvalue">Return Value</h4>
3042 <p class="description">Total size of credentials string</p>
798d6e29
MS
3043<h3 class="function"><span class="info">&#160;CUPS 1.1.21/macOS 10.4&#160;</span><a id="httpDecode64_2">httpDecode64_2</a></h3>
3044 <p class="description">Base64-decode a string.</p>
3045<p class="code">
98d88c8d
MS
3046char *httpDecode64_2(char *out, int *outlen, const char *in);</p>
3047<h4 class="parameters">Parameters</h4>
3048<table class="list"><tbody>
3049<tr><th>out</th>
3050 <td class="description">String to write to</td></tr>
3051<tr><th>outlen</th>
3052 <td class="description">Size of output string</td></tr>
3053<tr><th>in</th>
3054 <td class="description">String to read from</td></tr>
3055</tbody></table>
798d6e29
MS
3056<h4 class="returnvalue">Return Value</h4>
3057 <p class="description">Decoded string</p>
98d88c8d
MS
3058<h4 class="discussion">Discussion</h4>
3059 <p class="discussion">The caller must initialize &quot;outlen&quot; to the maximum size of the decoded
65bebeac 3060string before calling <code>httpDecode64_2</code>. On return &quot;outlen&quot; contains the
98d88c8d
MS
3061decoded length of the string.
3062
3063</p>
798d6e29
MS
3064<h3 class="function"><a id="httpDelete">httpDelete</a></h3>
3065 <p class="description">Send a DELETE request to the server.</p>
3066<p class="code">
98d88c8d 3067int httpDelete(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3068<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3069<table class="list"><tbody>
3070<tr><th>http</th>
3071 <td class="description">HTTP connection</td></tr>
3072<tr><th>uri</th>
3073 <td class="description">URI to delete</td></tr>
3074</tbody></table>
798d6e29
MS
3075<h4 class="returnvalue">Return Value</h4>
3076 <p class="description">Status of call (0 = success)</p>
798d6e29
MS
3077<h3 class="function"><span class="info">&#160;CUPS 1.1.21/macOS 10.4&#160;</span><a id="httpEncode64_2">httpEncode64_2</a></h3>
3078 <p class="description">Base64-encode a string.</p>
3079<p class="code">
98d88c8d
MS
3080char *httpEncode64_2(char *out, int outlen, const char *in, int inlen);</p>
3081<h4 class="parameters">Parameters</h4>
3082<table class="list"><tbody>
3083<tr><th>out</th>
3084 <td class="description">String to write to</td></tr>
3085<tr><th>outlen</th>
3086 <td class="description">Maximum size of output string</td></tr>
3087<tr><th>in</th>
3088 <td class="description">String to read from</td></tr>
3089<tr><th>inlen</th>
3090 <td class="description">Size of input string</td></tr>
3091</tbody></table>
798d6e29
MS
3092<h4 class="returnvalue">Return Value</h4>
3093 <p class="description">Encoded string</p>
3094<h3 class="function"><a id="httpEncryption">httpEncryption</a></h3>
3095 <p class="description">Set the required encryption on the link.</p>
3096<p class="code">
98d88c8d 3097int httpEncryption(<a href="#http_t">http_t</a> *http, <a href="#http_encryption_t">http_encryption_t</a> e);</p>
798d6e29 3098<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3099<table class="list"><tbody>
3100<tr><th>http</th>
3101 <td class="description">HTTP connection</td></tr>
3102<tr><th>e</th>
3103 <td class="description">New encryption preference</td></tr>
3104</tbody></table>
798d6e29
MS
3105<h4 class="returnvalue">Return Value</h4>
3106 <p class="description">-1 on error, 0 on success</p>
3107<h3 class="function"><a id="httpError">httpError</a></h3>
3108 <p class="description">Get the last error on a connection.</p>
3109<p class="code">
98d88c8d 3110int httpError(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3111<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3112<table class="list"><tbody>
3113<tr><th>http</th>
3114 <td class="description">HTTP connection</td></tr>
3115</tbody></table>
798d6e29
MS
3116<h4 class="returnvalue">Return Value</h4>
3117 <p class="description">Error code (errno) value</p>
3118<h3 class="function"><a id="httpFieldValue">httpFieldValue</a></h3>
3119 <p class="description">Return the HTTP field enumeration value for a field
3120name.</p>
3121<p class="code">
98d88c8d 3122<a href="#http_field_t">http_field_t</a> httpFieldValue(const char *name);</p>
798d6e29 3123<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3124<table class="list"><tbody>
3125<tr><th>name</th>
3126 <td class="description">String name</td></tr>
3127</tbody></table>
798d6e29
MS
3128<h4 class="returnvalue">Return Value</h4>
3129 <p class="description">Field index</p>
3130<h3 class="function"><a id="httpFlush">httpFlush</a></h3>
65bebeac 3131 <p class="description">Flush data read from a HTTP connection.</p>
798d6e29 3132<p class="code">
98d88c8d 3133void httpFlush(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3134<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3135<table class="list"><tbody>
3136<tr><th>http</th>
3137 <td class="description">HTTP connection</td></tr>
3138</tbody></table>
798d6e29 3139<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpFlushWrite">httpFlushWrite</a></h3>
65bebeac 3140 <p class="description">Flush data written to a HTTP connection.</p>
798d6e29 3141<p class="code">
98d88c8d 3142int httpFlushWrite(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3143<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3144<table class="list"><tbody>
3145<tr><th>http</th>
3146 <td class="description">HTTP connection</td></tr>
3147</tbody></table>
798d6e29
MS
3148<h4 class="returnvalue">Return Value</h4>
3149 <p class="description">Bytes written or -1 on error</p>
3150<h3 class="function"><a id="httpFreeCredentials">httpFreeCredentials</a></h3>
98d88c8d 3151 <p class="description">Free an array of credentials.</p>
798d6e29 3152<p class="code">
98d88c8d 3153void httpFreeCredentials(cups_array_t *credentials);</p>
798d6e29 3154<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3155<table class="list"><tbody>
3156<tr><th>credentials</th>
3157 <td class="description">Array of credentials</td></tr>
3158</tbody></table>
798d6e29
MS
3159<h3 class="function"><a id="httpGet">httpGet</a></h3>
3160 <p class="description">Send a GET request to the server.</p>
3161<p class="code">
98d88c8d 3162int httpGet(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3163<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3164<table class="list"><tbody>
3165<tr><th>http</th>
3166 <td class="description">HTTP connection</td></tr>
3167<tr><th>uri</th>
3168 <td class="description">URI to get</td></tr>
3169</tbody></table>
798d6e29
MS
3170<h4 class="returnvalue">Return Value</h4>
3171 <p class="description">Status of call (0 = success)</p>
3172<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetActivity">httpGetActivity</a></h3>
3173 <p class="description">Get the most recent activity for a connection.</p>
3174<p class="code">
98d88c8d 3175time_t httpGetActivity(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3176<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3177<table class="list"><tbody>
3178<tr><th>http</th>
3179 <td class="description">HTTP connection</td></tr>
3180</tbody></table>
798d6e29
MS
3181<h4 class="returnvalue">Return Value</h4>
3182 <p class="description">Time of last read or write</p>
3183<h4 class="discussion">Discussion</h4>
65bebeac 3184 <p class="discussion">The return value is the time in seconds of the last read or write.
798d6e29
MS
3185
3186</p>
3187<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetAddress">httpGetAddress</a></h3>
3188 <p class="description">Get the address of the connected peer of a connection.</p>
3189<p class="code">
98d88c8d 3190<a href="#http_addr_t">http_addr_t</a> *httpGetAddress(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3191<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3192<table class="list"><tbody>
3193<tr><th>http</th>
3194 <td class="description">HTTP connection</td></tr>
3195</tbody></table>
798d6e29
MS
3196<h4 class="returnvalue">Return Value</h4>
3197 <p class="description">Connected address or <code>NULL</code></p>
3198<h4 class="discussion">Discussion</h4>
65bebeac
MS
3199 <p class="discussion">For connections created with <a href="#httpConnect2"><code>httpConnect2</code></a>, the address is for the
3200server. For connections created with <a href="#httpAccept"><code>httpAccept</code></a>, the address is for
3201the client.<br>
3202<br>
3203Returns <code>NULL</code> if the socket is currently unconnected.
798d6e29
MS
3204
3205</p>
3206<h3 class="function"><span class="info">&#160;CUPS 1.3/macOS 10.5&#160;</span><a id="httpGetAuthString">httpGetAuthString</a></h3>
3207 <p class="description">Get the current authorization string.</p>
3208<p class="code">
98d88c8d 3209char *httpGetAuthString(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3210<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3211<table class="list"><tbody>
3212<tr><th>http</th>
3213 <td class="description">HTTP connection</td></tr>
3214</tbody></table>
798d6e29
MS
3215<h4 class="returnvalue">Return Value</h4>
3216 <p class="description">Authorization string</p>
3217<h4 class="discussion">Discussion</h4>
65bebeac
MS
3218 <p class="discussion">The authorization string is set by <a href="#cupsDoAuthentication"><code>cupsDoAuthentication</code></a> and
3219<a href="#httpSetAuthString"><code>httpSetAuthString</code></a>. Use <a href="#httpGetAuthString"><code>httpGetAuthString</code></a> to retrieve the
3220string to use with <a href="#httpSetField"><code>httpSetField</code></a> for the
3221<code>HTTP_FIELD_AUTHORIZATION</code> value.
798d6e29
MS
3222
3223</p>
3224<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetBlocking">httpGetBlocking</a></h3>
3225 <p class="description">Get the blocking/non-block state of a connection.</p>
3226<p class="code">
98d88c8d 3227int httpGetBlocking(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3228<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3229<table class="list"><tbody>
3230<tr><th>http</th>
3231 <td class="description">HTTP connection</td></tr>
3232</tbody></table>
798d6e29
MS
3233<h4 class="returnvalue">Return Value</h4>
3234 <p class="description">1 if blocking, 0 if non-blocking</p>
3235<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpGetContentEncoding">httpGetContentEncoding</a></h3>
3236 <p class="description">Get a common content encoding, if any, between
3237the client and server.</p>
3238<p class="code">
98d88c8d 3239const char *httpGetContentEncoding(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3240<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3241<table class="list"><tbody>
3242<tr><th>http</th>
3243 <td class="description">HTTP connection</td></tr>
3244</tbody></table>
798d6e29
MS
3245<h4 class="returnvalue">Return Value</h4>
3246 <p class="description">Content-Coding value or
3247<code>NULL</code> for the identity
3248coding.</p>
3249<h4 class="discussion">Discussion</h4>
3250 <p class="discussion">This function uses the value of the Accepts-Encoding HTTP header and must be
3251called after receiving a response from the server or a request from the
3252client. The value returned can be use in subsequent requests (for clients)
3253or in the response (for servers) in order to compress the content stream.
3254
3255</p>
3256<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="httpGetCookie">httpGetCookie</a></h3>
3257 <p class="description">Get any cookie data from the response.</p>
3258<p class="code">
98d88c8d 3259const char *httpGetCookie(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3260<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3261<table class="list"><tbody>
3262<tr><th>http</th>
3263 <td class="description">HTTP connection</td></tr>
3264</tbody></table>
798d6e29 3265<h4 class="returnvalue">Return Value</h4>
65bebeac 3266 <p class="description">Cookie data or <code>NULL</code></p>
798d6e29
MS
3267<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetDateString2">httpGetDateString2</a></h3>
3268 <p class="description">Get a formatted date/time string from a time value.</p>
3269<p class="code">
98d88c8d
MS
3270const char *httpGetDateString2(time_t t, char *s, int slen);</p>
3271<h4 class="parameters">Parameters</h4>
3272<table class="list"><tbody>
3273<tr><th>t</th>
65bebeac 3274 <td class="description">Time in seconds</td></tr>
98d88c8d
MS
3275<tr><th>s</th>
3276 <td class="description">String buffer</td></tr>
3277<tr><th>slen</th>
3278 <td class="description">Size of string buffer</td></tr>
3279</tbody></table>
798d6e29
MS
3280<h4 class="returnvalue">Return Value</h4>
3281 <p class="description">Date/time string</p>
3282<h3 class="function"><a id="httpGetDateTime">httpGetDateTime</a></h3>
3283 <p class="description">Get a time value from a formatted date/time string.</p>
3284<p class="code">
98d88c8d 3285time_t httpGetDateTime(const char *s);</p>
798d6e29 3286<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3287<table class="list"><tbody>
3288<tr><th>s</th>
3289 <td class="description">Date/time string</td></tr>
3290</tbody></table>
798d6e29 3291<h4 class="returnvalue">Return Value</h4>
65bebeac 3292 <p class="description">Time in seconds</p>
798d6e29
MS
3293<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetEncryption">httpGetEncryption</a></h3>
3294 <p class="description">Get the current encryption mode of a connection.</p>
3295<p class="code">
98d88c8d 3296<a href="#http_encryption_t">http_encryption_t</a> httpGetEncryption(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3297<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3298<table class="list"><tbody>
3299<tr><th>http</th>
3300 <td class="description">HTTP connection</td></tr>
3301</tbody></table>
798d6e29
MS
3302<h4 class="returnvalue">Return Value</h4>
3303 <p class="description">Current encryption mode</p>
3304<h4 class="discussion">Discussion</h4>
3305 <p class="discussion">This function returns the encryption mode for the connection. Use the
3306<a href="#httpIsEncrypted"><code>httpIsEncrypted</code></a> function to determine whether a TLS session has
3307been established.
3308
3309</p>
3310<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpGetExpect">httpGetExpect</a></h3>
3311 <p class="description">Get the value of the Expect header, if any.</p>
3312<p class="code">
98d88c8d 3313http_status_t httpGetExpect(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3314<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3315<table class="list"><tbody>
3316<tr><th>http</th>
3317 <td class="description">HTTP connection</td></tr>
3318</tbody></table>
798d6e29
MS
3319<h4 class="returnvalue">Return Value</h4>
3320 <p class="description">Expect: status, if any</p>
3321<h4 class="discussion">Discussion</h4>
3322 <p class="discussion">Returns <code>HTTP_STATUS_NONE</code> if there is no Expect header, otherwise
3323returns the expected HTTP status code, typically <code>HTTP_STATUS_CONTINUE</code>.
3324
3325</p>
3326<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetFd">httpGetFd</a></h3>
3327 <p class="description">Get the file descriptor associated with a connection.</p>
3328<p class="code">
98d88c8d 3329int httpGetFd(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3330<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3331<table class="list"><tbody>
3332<tr><th>http</th>
3333 <td class="description">HTTP connection</td></tr>
3334</tbody></table>
798d6e29
MS
3335<h4 class="returnvalue">Return Value</h4>
3336 <p class="description">File descriptor or -1 if none</p>
3337<h3 class="function"><a id="httpGetField">httpGetField</a></h3>
3338 <p class="description">Get a field value from a request/response.</p>
3339<p class="code">
98d88c8d 3340const char *httpGetField(<a href="#http_t">http_t</a> *http, <a href="#http_field_t">http_field_t</a> field);</p>
798d6e29 3341<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3342<table class="list"><tbody>
3343<tr><th>http</th>
3344 <td class="description">HTTP connection</td></tr>
3345<tr><th>field</th>
3346 <td class="description">Field to get</td></tr>
3347</tbody></table>
798d6e29
MS
3348<h4 class="returnvalue">Return Value</h4>
3349 <p class="description">Field value</p>
798d6e29
MS
3350<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetHostname">httpGetHostname</a></h3>
3351 <p class="description">Get the FQDN for the connection or local system.</p>
3352<p class="code">
98d88c8d
MS
3353const char *httpGetHostname(<a href="#http_t">http_t</a> *http, char *s, int slen);</p>
3354<h4 class="parameters">Parameters</h4>
3355<table class="list"><tbody>
3356<tr><th>http</th>
3357 <td class="description">HTTP connection or NULL</td></tr>
3358<tr><th>s</th>
3359 <td class="description">String buffer for name</td></tr>
3360<tr><th>slen</th>
3361 <td class="description">Size of buffer</td></tr>
3362</tbody></table>
798d6e29
MS
3363<h4 class="returnvalue">Return Value</h4>
3364 <p class="description">FQDN for connection or system</p>
3365<h4 class="discussion">Discussion</h4>
3366 <p class="discussion">When &quot;http&quot; points to a connected socket, return the hostname or
3367address that was used in the call to httpConnect() or httpConnectEncrypt(),
3368or the address of the client for the connection from httpAcceptConnection().
3369Otherwise, return the FQDN for the local system using both gethostname()
3370and gethostbyname() to get the local hostname with domain.
3371
3372</p>
3373<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetKeepAlive">httpGetKeepAlive</a></h3>
3374 <p class="description">Get the current Keep-Alive state of the connection.</p>
3375<p class="code">
98d88c8d 3376<a href="#http_keepalive_t">http_keepalive_t</a> httpGetKeepAlive(<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">Keep-Alive state</p>
798d6e29
MS
3384<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetLength2">httpGetLength2</a></h3>
3385 <p class="description">Get the amount of data remaining from the
3386content-length or transfer-encoding fields.</p>
3387<p class="code">
98d88c8d 3388off_t httpGetLength2(<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">Content length</p>
3396<h4 class="discussion">Discussion</h4>
3397 <p class="discussion">This function returns the complete content length, even for
3398content larger than 2^31 - 1.
3399
3400</p>
3401<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetPending">httpGetPending</a></h3>
3402 <p class="description">Get the number of bytes that are buffered for writing.</p>
3403<p class="code">
98d88c8d 3404size_t httpGetPending(<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">Number of bytes buffered</p>
3412<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetReady">httpGetReady</a></h3>
3413 <p class="description">Get the number of bytes that can be read without blocking.</p>
3414<p class="code">
98d88c8d 3415size_t httpGetReady(<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">Number of bytes available</p>
3423<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpGetRemaining">httpGetRemaining</a></h3>
3424 <p class="description">Get the number of remaining bytes in the message
3425body or current chunk.</p>
3426<p class="code">
98d88c8d 3427size_t httpGetRemaining(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3428<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3429<table class="list"><tbody>
3430<tr><th>http</th>
3431 <td class="description">HTTP connection</td></tr>
3432</tbody></table>
798d6e29
MS
3433<h4 class="returnvalue">Return Value</h4>
3434 <p class="description">Remaining bytes</p>
3435<h4 class="discussion">Discussion</h4>
3436 <p class="discussion">The <a href="#httpIsChunked"><code>httpIsChunked</code></a> function can be used to determine whether the
3437message body is chunked or fixed-length.
3438
3439</p>
3440<h3 class="function"><a id="httpGetState">httpGetState</a></h3>
3441 <p class="description">Get the current state of the HTTP request.</p>
3442<p class="code">
98d88c8d 3443<a href="#http_state_t">http_state_t</a> httpGetState(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3444<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3445<table class="list"><tbody>
3446<tr><th>http</th>
3447 <td class="description">HTTP connection</td></tr>
3448</tbody></table>
798d6e29
MS
3449<h4 class="returnvalue">Return Value</h4>
3450 <p class="description">HTTP state</p>
3451<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetStatus">httpGetStatus</a></h3>
3452 <p class="description">Get the status of the last HTTP request.</p>
3453<p class="code">
98d88c8d 3454http_status_t httpGetStatus(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3455<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3456<table class="list"><tbody>
3457<tr><th>http</th>
3458 <td class="description">HTTP connection</td></tr>
3459</tbody></table>
798d6e29
MS
3460<h4 class="returnvalue">Return Value</h4>
3461 <p class="description">HTTP status</p>
798d6e29
MS
3462<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpGetSubField2">httpGetSubField2</a></h3>
3463 <p class="description">Get a sub-field value.</p>
3464<p class="code">
98d88c8d
MS
3465char *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>
3466<h4 class="parameters">Parameters</h4>
3467<table class="list"><tbody>
3468<tr><th>http</th>
3469 <td class="description">HTTP connection</td></tr>
3470<tr><th>field</th>
3471 <td class="description">Field index</td></tr>
3472<tr><th>name</th>
3473 <td class="description">Name of sub-field</td></tr>
3474<tr><th>value</th>
3475 <td class="description">Value string</td></tr>
3476<tr><th>valuelen</th>
3477 <td class="description">Size of value buffer</td></tr>
3478</tbody></table>
798d6e29 3479<h4 class="returnvalue">Return Value</h4>
65bebeac 3480 <p class="description">Value or <code>NULL</code></p>
798d6e29
MS
3481<h3 class="function"><a id="httpGetVersion">httpGetVersion</a></h3>
3482 <p class="description">Get the HTTP version at the other end.</p>
3483<p class="code">
98d88c8d 3484<a href="#http_version_t">http_version_t</a> httpGetVersion(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3485<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3486<table class="list"><tbody>
3487<tr><th>http</th>
3488 <td class="description">HTTP connection</td></tr>
3489</tbody></table>
798d6e29
MS
3490<h4 class="returnvalue">Return Value</h4>
3491 <p class="description">Version number</p>
3492<h3 class="function"><a id="httpGets">httpGets</a></h3>
3493 <p class="description">Get a line of text from a HTTP connection.</p>
3494<p class="code">
98d88c8d
MS
3495char *httpGets(char *line, int length, <a href="#http_t">http_t</a> *http);</p>
3496<h4 class="parameters">Parameters</h4>
3497<table class="list"><tbody>
3498<tr><th>line</th>
3499 <td class="description">Line to read into</td></tr>
3500<tr><th>length</th>
3501 <td class="description">Max length of buffer</td></tr>
3502<tr><th>http</th>
3503 <td class="description">HTTP connection</td></tr>
3504</tbody></table>
798d6e29 3505<h4 class="returnvalue">Return Value</h4>
65bebeac 3506 <p class="description">Line or <code>NULL</code></p>
798d6e29
MS
3507<h3 class="function"><a id="httpHead">httpHead</a></h3>
3508 <p class="description">Send a HEAD request to the server.</p>
3509<p class="code">
98d88c8d 3510int httpHead(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3511<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3512<table class="list"><tbody>
3513<tr><th>http</th>
3514 <td class="description">HTTP connection</td></tr>
3515<tr><th>uri</th>
3516 <td class="description">URI for head</td></tr>
3517</tbody></table>
798d6e29
MS
3518<h4 class="returnvalue">Return Value</h4>
3519 <p class="description">Status of call (0 = success)</p>
3520<h3 class="function"><a id="httpInitialize">httpInitialize</a></h3>
53af7f21
MS
3521 <p class="description">Initialize the HTTP interface library and set the
3522default HTTP proxy (if any).</p>
98d88c8d
MS
3523<p class="code">
3524void httpInitialize(void);</p>
798d6e29
MS
3525<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpIsChunked">httpIsChunked</a></h3>
3526 <p class="description">Report whether a message body is chunked.</p>
3527<p class="code">
98d88c8d 3528int httpIsChunked(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3529<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3530<table class="list"><tbody>
3531<tr><th>http</th>
3532 <td class="description">HTTP connection</td></tr>
3533</tbody></table>
798d6e29
MS
3534<h4 class="returnvalue">Return Value</h4>
3535 <p class="description">1 if chunked, 0 if not</p>
3536<h4 class="discussion">Discussion</h4>
3537 <p class="discussion">This function returns non-zero if the message body is composed of
3538variable-length chunks.
3539
3540</p>
3541<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpIsEncrypted">httpIsEncrypted</a></h3>
3542 <p class="description">Report whether a connection is encrypted.</p>
3543<p class="code">
98d88c8d 3544int httpIsEncrypted(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3545<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3546<table class="list"><tbody>
3547<tr><th>http</th>
3548 <td class="description">HTTP connection</td></tr>
3549</tbody></table>
798d6e29
MS
3550<h4 class="returnvalue">Return Value</h4>
3551 <p class="description">1 if encrypted, 0 if not</p>
3552<h4 class="discussion">Discussion</h4>
3553 <p class="discussion">This function returns non-zero if the connection is currently encrypted.
3554
3555</p>
3556<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpLoadCredentials">httpLoadCredentials</a></h3>
3557 <p class="description">Load X.509 credentials from a keychain file.</p>
3558<p class="code">
98d88c8d
MS
3559int httpLoadCredentials(const char *path, cups_array_t **credentials, const char *common_name);</p>
3560<h4 class="parameters">Parameters</h4>
3561<table class="list"><tbody>
3562<tr><th>path</th>
3563 <td class="description">Keychain path or <code>NULL</code> for default</td></tr>
3564<tr><th>credentials</th>
3565 <td class="description">Credentials</td></tr>
3566<tr><th>common_name</th>
3567 <td class="description">Common name for credentials</td></tr>
3568</tbody></table>
798d6e29
MS
3569<h4 class="returnvalue">Return Value</h4>
3570 <p class="description">0 on success, -1 on error</p>
3571<h3 class="function"><a id="httpOptions">httpOptions</a></h3>
3572 <p class="description">Send an OPTIONS request to the server.</p>
3573<p class="code">
98d88c8d 3574int httpOptions(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3575<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3576<table class="list"><tbody>
3577<tr><th>http</th>
3578 <td class="description">HTTP connection</td></tr>
3579<tr><th>uri</th>
3580 <td class="description">URI for options</td></tr>
3581</tbody></table>
798d6e29
MS
3582<h4 class="returnvalue">Return Value</h4>
3583 <p class="description">Status of call (0 = success)</p>
3584<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpPeek">httpPeek</a></h3>
3585 <p class="description">Peek at data from a HTTP connection.</p>
3586<p class="code">
98d88c8d
MS
3587ssize_t httpPeek(<a href="#http_t">http_t</a> *http, char *buffer, size_t length);</p>
3588<h4 class="parameters">Parameters</h4>
3589<table class="list"><tbody>
3590<tr><th>http</th>
3591 <td class="description">HTTP connection</td></tr>
3592<tr><th>buffer</th>
3593 <td class="description">Buffer for data</td></tr>
3594<tr><th>length</th>
3595 <td class="description">Maximum number of bytes</td></tr>
3596</tbody></table>
798d6e29
MS
3597<h4 class="returnvalue">Return Value</h4>
3598 <p class="description">Number of bytes copied</p>
3599<h4 class="discussion">Discussion</h4>
3600 <p class="discussion">This function copies available data from the given HTTP connection, reading
3601a buffer as needed. The data is still available for reading using
65bebeac 3602<a href="#httpRead2"><code>httpRead2</code></a>.<br>
798d6e29
MS
3603<br>
3604For non-blocking connections the usual timeouts apply.
3605
3606</p>
3607<h3 class="function"><a id="httpPost">httpPost</a></h3>
3608 <p class="description">Send a POST request to the server.</p>
3609<p class="code">
98d88c8d 3610int httpPost(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3611<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3612<table class="list"><tbody>
3613<tr><th>http</th>
3614 <td class="description">HTTP connection</td></tr>
3615<tr><th>uri</th>
3616 <td class="description">URI for post</td></tr>
3617</tbody></table>
798d6e29
MS
3618<h4 class="returnvalue">Return Value</h4>
3619 <p class="description">Status of call (0 = success)</p>
3620<h3 class="function"><a id="httpPut">httpPut</a></h3>
3621 <p class="description">Send a PUT request to the server.</p>
3622<p class="code">
98d88c8d 3623int httpPut(<a href="#http_t">http_t</a> *http, const char *uri);</p>
798d6e29 3624<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3625<table class="list"><tbody>
3626<tr><th>http</th>
3627 <td class="description">HTTP connection</td></tr>
3628<tr><th>uri</th>
3629 <td class="description">URI to put</td></tr>
3630</tbody></table>
798d6e29
MS
3631<h4 class="returnvalue">Return Value</h4>
3632 <p class="description">Status of call (0 = success)</p>
798d6e29
MS
3633<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpRead2">httpRead2</a></h3>
3634 <p class="description">Read data from a HTTP connection.</p>
3635<p class="code">
98d88c8d
MS
3636ssize_t httpRead2(<a href="#http_t">http_t</a> *http, char *buffer, size_t length);</p>
3637<h4 class="parameters">Parameters</h4>
3638<table class="list"><tbody>
3639<tr><th>http</th>
3640 <td class="description">HTTP connection</td></tr>
3641<tr><th>buffer</th>
3642 <td class="description">Buffer for data</td></tr>
3643<tr><th>length</th>
3644 <td class="description">Maximum number of bytes</td></tr>
3645</tbody></table>
798d6e29
MS
3646<h4 class="returnvalue">Return Value</h4>
3647 <p class="description">Number of bytes read</p>
3648<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpReadRequest">httpReadRequest</a></h3>
3649 <p class="description">Read a HTTP request from a connection.</p>
3650<p class="code">
98d88c8d
MS
3651<a href="#http_state_t">http_state_t</a> httpReadRequest(<a href="#http_t">http_t</a> *http, char *uri, size_t urilen);</p>
3652<h4 class="parameters">Parameters</h4>
3653<table class="list"><tbody>
3654<tr><th>http</th>
3655 <td class="description">HTTP connection</td></tr>
3656<tr><th>uri</th>
3657 <td class="description">URI buffer</td></tr>
3658<tr><th>urilen</th>
3659 <td class="description">Size of URI buffer</td></tr>
3660</tbody></table>
798d6e29
MS
3661<h4 class="returnvalue">Return Value</h4>
3662 <p class="description">New state of connection</p>
798d6e29
MS
3663<h3 class="function"><a id="httpReconnect2">httpReconnect2</a></h3>
3664 <p class="description">Reconnect to a HTTP server with timeout and optional
3665cancel.</p>
3666<p class="code">
98d88c8d
MS
3667int httpReconnect2(<a href="#http_t">http_t</a> *http, int msec, int *cancel);</p>
3668<h4 class="parameters">Parameters</h4>
3669<table class="list"><tbody>
3670<tr><th>http</th>
3671 <td class="description">HTTP connection</td></tr>
3672<tr><th>msec</th>
3673 <td class="description">Timeout in milliseconds</td></tr>
3674<tr><th>cancel</th>
3675 <td class="description">Pointer to &quot;cancel&quot; variable</td></tr>
3676</tbody></table>
798d6e29
MS
3677<h4 class="returnvalue">Return Value</h4>
3678 <p class="description">0 on success, non-zero on failure</p>
3679<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpResolveHostname">httpResolveHostname</a></h3>
3680 <p class="description">Resolve the hostname of the HTTP connection
3681address.</p>
3682<p class="code">
98d88c8d
MS
3683const char *httpResolveHostname(<a href="#http_t">http_t</a> *http, char *buffer, size_t bufsize);</p>
3684<h4 class="parameters">Parameters</h4>
3685<table class="list"><tbody>
3686<tr><th>http</th>
3687 <td class="description">HTTP connection</td></tr>
3688<tr><th>buffer</th>
3689 <td class="description">Hostname buffer</td></tr>
3690<tr><th>bufsize</th>
3691 <td class="description">Size of buffer</td></tr>
3692</tbody></table>
798d6e29
MS
3693<h4 class="returnvalue">Return Value</h4>
3694 <p class="description">Resolved hostname or <code>NULL</code></p>
3695<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpSaveCredentials">httpSaveCredentials</a></h3>
3696 <p class="description">Save X.509 credentials to a keychain file.</p>
3697<p class="code">
98d88c8d
MS
3698int httpSaveCredentials(const char *path, cups_array_t *credentials, const char *common_name);</p>
3699<h4 class="parameters">Parameters</h4>
3700<table class="list"><tbody>
3701<tr><th>path</th>
3702 <td class="description">Keychain path or <code>NULL</code> for default</td></tr>
3703<tr><th>credentials</th>
3704 <td class="description">Credentials</td></tr>
3705<tr><th>common_name</th>
3706 <td class="description">Common name for credentials</td></tr>
3707</tbody></table>
798d6e29
MS
3708<h4 class="returnvalue">Return Value</h4>
3709 <p class="description">-1 on error, 0 on success</p>
798d6e29
MS
3710<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpSeparateURI">httpSeparateURI</a></h3>
3711 <p class="description">Separate a Universal Resource Identifier into its
3712components.</p>
3713<p class="code">
98d88c8d
MS
3714<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>
3715<h4 class="parameters">Parameters</h4>
3716<table class="list"><tbody>
3717<tr><th>decoding</th>
3718 <td class="description">Decoding flags</td></tr>
3719<tr><th>uri</th>
3720 <td class="description">Universal Resource Identifier</td></tr>
3721<tr><th>scheme</th>
3722 <td class="description">Scheme (http, https, etc.)</td></tr>
3723<tr><th>schemelen</th>
3724 <td class="description">Size of scheme buffer</td></tr>
3725<tr><th>username</th>
3726 <td class="description">Username</td></tr>
3727<tr><th>usernamelen</th>
3728 <td class="description">Size of username buffer</td></tr>
3729<tr><th>host</th>
3730 <td class="description">Hostname</td></tr>
3731<tr><th>hostlen</th>
3732 <td class="description">Size of hostname buffer</td></tr>
3733<tr><th>port</th>
3734 <td class="description">Port number to use</td></tr>
3735<tr><th>resource</th>
3736 <td class="description">Resource/filename</td></tr>
3737<tr><th>resourcelen</th>
3738 <td class="description">Size of resource buffer</td></tr>
3739</tbody></table>
798d6e29
MS
3740<h4 class="returnvalue">Return Value</h4>
3741 <p class="description">Result of separation</p>
98d88c8d 3742<h3 class="function"><span class="info">&#160;CUPS 1.3/macOS 10.5&#160;</span><a id="httpSetAuthString">httpSetAuthString</a></h3>
53af7f21 3743 <p class="description">Set the current authorization string.</p>
98d88c8d
MS
3744<p class="code">
3745void httpSetAuthString(<a href="#http_t">http_t</a> *http, const char *scheme, const char *data);</p>
3746<h4 class="parameters">Parameters</h4>
3747<table class="list"><tbody>
3748<tr><th>http</th>
3749 <td class="description">HTTP connection</td></tr>
3750<tr><th>scheme</th>
3751 <td class="description">Auth scheme (NULL to clear it)</td></tr>
3752<tr><th>data</th>
3753 <td class="description">Auth data (NULL for none)</td></tr>
3754</tbody></table>
3755<h4 class="discussion">Discussion</h4>
798d6e29 3756 <p class="discussion">This function just stores a copy of the current authorization string in
65bebeac
MS
3757the HTTP connection object. You must still call <a href="#httpSetField"><code>httpSetField</code></a> to set
3758<code>HTTP_FIELD_AUTHORIZATION</code> prior to issuing a HTTP request using
3759<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
3760<a href="#httpPut"><code>httpPut</code></a>.
798d6e29
MS
3761
3762</p>
98d88c8d
MS
3763<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="httpSetCookie">httpSetCookie</a></h3>
3764 <p class="description">Set the cookie value(s).</p>
798d6e29 3765<p class="code">
98d88c8d 3766void httpSetCookie(<a href="#http_t">http_t</a> *http, const char *cookie);</p>
798d6e29 3767<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3768<table class="list"><tbody>
3769<tr><th>http</th>
3770 <td class="description">Connection</td></tr>
3771<tr><th>cookie</th>
3772 <td class="description">Cookie string</td></tr>
3773</tbody></table>
798d6e29
MS
3774<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="httpSetCredentials">httpSetCredentials</a></h3>
3775 <p class="description">Set the credentials associated with an encrypted
3776connection.</p>
3777<p class="code">
98d88c8d 3778int httpSetCredentials(<a href="#http_t">http_t</a> *http, cups_array_t *credentials);</p>
798d6e29 3779<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3780<table class="list"><tbody>
3781<tr><th>http</th>
3782 <td class="description">HTTP connection</td></tr>
3783<tr><th>credentials</th>
3784 <td class="description">Array of credentials</td></tr>
3785</tbody></table>
798d6e29
MS
3786<h4 class="returnvalue">Return Value</h4>
3787 <p class="description">Status of call (0 = success)</p>
98d88c8d 3788<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpSetDefaultField">httpSetDefaultField</a></h3>
53af7f21 3789 <p class="description">Set the default value of an HTTP header.</p>
98d88c8d
MS
3790<p class="code">
3791void httpSetDefaultField(<a href="#http_t">http_t</a> *http, <a href="#http_field_t">http_field_t</a> field, const char *value);</p>
3792<h4 class="parameters">Parameters</h4>
3793<table class="list"><tbody>
3794<tr><th>http</th>
3795 <td class="description">HTTP connection</td></tr>
3796<tr><th>field</th>
3797 <td class="description">Field index</td></tr>
3798<tr><th>value</th>
3799 <td class="description">Value</td></tr>
3800</tbody></table>
3801<h4 class="discussion">Discussion</h4>
798d6e29
MS
3802 <p class="discussion">Currently only <code>HTTP_FIELD_ACCEPT_ENCODING</code>, <code>HTTP_FIELD_SERVER</code>,
3803and <code>HTTP_FIELD_USER_AGENT</code> can be set.
3804
3805</p>
98d88c8d
MS
3806<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpSetExpect">httpSetExpect</a></h3>
3807 <p class="description">Set the Expect: header in a request.</p>
798d6e29 3808<p class="code">
98d88c8d 3809void httpSetExpect(<a href="#http_t">http_t</a> *http, http_status_t expect);</p>
798d6e29 3810<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3811<table class="list"><tbody>
3812<tr><th>http</th>
3813 <td class="description">HTTP connection</td></tr>
3814<tr><th>expect</th>
3815 <td class="description">HTTP status to expect
3816(<code>HTTP_STATUS_CONTINUE</code>)</td></tr>
3817</tbody></table>
3818<h4 class="discussion">Discussion</h4>
798d6e29
MS
3819 <p class="discussion">Currently only <code>HTTP_STATUS_CONTINUE</code> is supported for the &quot;expect&quot;
3820argument.
3821
3822</p>
3823<h3 class="function"><a id="httpSetField">httpSetField</a></h3>
53af7f21 3824 <p class="description">Set the value of an HTTP header.</p>
798d6e29 3825<p class="code">
98d88c8d
MS
3826void httpSetField(<a href="#http_t">http_t</a> *http, <a href="#http_field_t">http_field_t</a> field, const char *value);</p>
3827<h4 class="parameters">Parameters</h4>
3828<table class="list"><tbody>
3829<tr><th>http</th>
3830 <td class="description">HTTP connection</td></tr>
3831<tr><th>field</th>
3832 <td class="description">Field index</td></tr>
3833<tr><th>value</th>
3834 <td class="description">Value</td></tr>
3835</tbody></table>
3836<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpSetKeepAlive">httpSetKeepAlive</a></h3>
53af7f21 3837 <p class="description">Set the current Keep-Alive state of a connection.</p>
98d88c8d
MS
3838<p class="code">
3839void httpSetKeepAlive(<a href="#http_t">http_t</a> *http, <a href="#http_keepalive_t">http_keepalive_t</a> keep_alive);</p>
3840<h4 class="parameters">Parameters</h4>
3841<table class="list"><tbody>
3842<tr><th>http</th>
3843 <td class="description">HTTP connection</td></tr>
3844<tr><th>keep_alive</th>
3845 <td class="description">New Keep-Alive value</td></tr>
3846</tbody></table>
3847<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpSetLength">httpSetLength</a></h3>
53af7f21 3848 <p class="description">Set the content-length and content-encoding.</p>
98d88c8d
MS
3849<p class="code">
3850void httpSetLength(<a href="#http_t">http_t</a> *http, size_t length);</p>
3851<h4 class="parameters">Parameters</h4>
3852<table class="list"><tbody>
3853<tr><th>http</th>
3854 <td class="description">HTTP connection</td></tr>
3855<tr><th>length</th>
3856 <td class="description">Length (0 for chunked)</td></tr>
3857</tbody></table>
3858<h3 class="function"><span class="info">&#160;CUPS 1.5/macOS 10.7&#160;</span><a id="httpSetTimeout">httpSetTimeout</a></h3>
53af7f21 3859 <p class="description">Set read/write timeouts and an optional callback.</p>
98d88c8d
MS
3860<p class="code">
3861void 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>
3862<h4 class="parameters">Parameters</h4>
3863<table class="list"><tbody>
3864<tr><th>http</th>
3865 <td class="description">HTTP connection</td></tr>
3866<tr><th>timeout</th>
3867 <td class="description">Number of seconds for timeout,
3868must be greater than 0</td></tr>
3869<tr><th>cb</th>
65bebeac 3870 <td class="description">Callback function or <code>NULL</code></td></tr>
98d88c8d
MS
3871<tr><th>user_data</th>
3872 <td class="description">User data pointer</td></tr>
3873</tbody></table>
3874<h4 class="discussion">Discussion</h4>
798d6e29
MS
3875 <p class="discussion">The optional timeout callback receives both the HTTP connection and a user
3876data pointer and must return 1 to continue or 0 to error (time) out.
3877
3878</p>
98d88c8d
MS
3879<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpShutdown">httpShutdown</a></h3>
3880 <p class="description">Shutdown one side of an HTTP connection.</p>
798d6e29 3881<p class="code">
98d88c8d 3882void httpShutdown(<a href="#http_t">http_t</a> *http);</p>
798d6e29 3883<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3884<table class="list"><tbody>
3885<tr><th>http</th>
3886 <td class="description">HTTP connection</td></tr>
3887</tbody></table>
798d6e29
MS
3888<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpStateString">httpStateString</a></h3>
3889 <p class="description">Return the string describing a HTTP state value.</p>
3890<p class="code">
98d88c8d 3891const char *httpStateString(<a href="#http_state_t">http_state_t</a> state);</p>
798d6e29 3892<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3893<table class="list"><tbody>
3894<tr><th>state</th>
3895 <td class="description">HTTP state value</td></tr>
3896</tbody></table>
798d6e29
MS
3897<h4 class="returnvalue">Return Value</h4>
3898 <p class="description">State string</p>
3899<h3 class="function"><a id="httpStatus">httpStatus</a></h3>
3900 <p class="description">Return a short string describing a HTTP status code.</p>
3901<p class="code">
98d88c8d 3902const char *httpStatus(http_status_t status);</p>
798d6e29 3903<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3904<table class="list"><tbody>
3905<tr><th>status</th>
3906 <td class="description">HTTP status code</td></tr>
3907</tbody></table>
798d6e29
MS
3908<h4 class="returnvalue">Return Value</h4>
3909 <p class="description">Localized status string</p>
3910<h4 class="discussion">Discussion</h4>
3911 <p class="discussion">The returned string is localized to the current POSIX locale and is based
65bebeac 3912on the status strings defined in RFC 7231.</p>
798d6e29
MS
3913<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="httpURIStatusString">httpURIStatusString</a></h3>
3914 <p class="description">Return a string describing a URI status code.</p>
3915<p class="code">
98d88c8d 3916const char *httpURIStatusString(<a href="#http_uri_status_t">http_uri_status_t</a> status);</p>
798d6e29 3917<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3918<table class="list"><tbody>
3919<tr><th>status</th>
3920 <td class="description">URI status code</td></tr>
3921</tbody></table>
798d6e29
MS
3922<h4 class="returnvalue">Return Value</h4>
3923 <p class="description">Localized status string</p>
3924<h3 class="function"><a id="httpUpdate">httpUpdate</a></h3>
3925 <p class="description">Update the current HTTP state for incoming data.</p>
3926<p class="code">
98d88c8d 3927http_status_t httpUpdate(<a href="#http_t">http_t</a> *http);</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</tbody></table>
798d6e29
MS
3933<h4 class="returnvalue">Return Value</h4>
3934 <p class="description">HTTP status</p>
3935<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="httpWait">httpWait</a></h3>
3936 <p class="description">Wait for data available on a connection.</p>
3937<p class="code">
98d88c8d 3938int httpWait(<a href="#http_t">http_t</a> *http, int msec);</p>
798d6e29 3939<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3940<table class="list"><tbody>
3941<tr><th>http</th>
3942 <td class="description">HTTP connection</td></tr>
3943<tr><th>msec</th>
3944 <td class="description">Milliseconds to wait</td></tr>
3945</tbody></table>
798d6e29
MS
3946<h4 class="returnvalue">Return Value</h4>
3947 <p class="description">1 if data is available, 0 otherwise</p>
798d6e29
MS
3948<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="httpWrite2">httpWrite2</a></h3>
3949 <p class="description">Write data to a HTTP connection.</p>
3950<p class="code">
98d88c8d
MS
3951ssize_t httpWrite2(<a href="#http_t">http_t</a> *http, const char *buffer, size_t length);</p>
3952<h4 class="parameters">Parameters</h4>
3953<table class="list"><tbody>
3954<tr><th>http</th>
3955 <td class="description">HTTP connection</td></tr>
3956<tr><th>buffer</th>
3957 <td class="description">Buffer for data</td></tr>
3958<tr><th>length</th>
3959 <td class="description">Number of bytes to write</td></tr>
3960</tbody></table>
798d6e29
MS
3961<h4 class="returnvalue">Return Value</h4>
3962 <p class="description">Number of bytes written</p>
3963<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="httpWriteResponse">httpWriteResponse</a></h3>
3964 <p class="description">Write a HTTP response to a client connection.</p>
3965<p class="code">
98d88c8d 3966int httpWriteResponse(<a href="#http_t">http_t</a> *http, http_status_t status);</p>
798d6e29 3967<h4 class="parameters">Parameters</h4>
98d88c8d
MS
3968<table class="list"><tbody>
3969<tr><th>http</th>
3970 <td class="description">HTTP connection</td></tr>
3971<tr><th>status</th>
3972 <td class="description">Status code</td></tr>
3973</tbody></table>
798d6e29
MS
3974<h4 class="returnvalue">Return Value</h4>
3975 <p class="description">0 on success, -1 on error</p>
3976<h3 class="function"><a id="ippAddBoolean">ippAddBoolean</a></h3>
3977 <p class="description">Add a boolean attribute to an IPP message.</p>
3978<p class="code">
98d88c8d
MS
3979<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>
3980<h4 class="parameters">Parameters</h4>
3981<table class="list"><tbody>
3982<tr><th>ipp</th>
3983 <td class="description">IPP message</td></tr>
3984<tr><th>group</th>
3985 <td class="description">IPP group</td></tr>
3986<tr><th>name</th>
3987 <td class="description">Name of attribute</td></tr>
3988<tr><th>value</th>
3989 <td class="description">Value of attribute</td></tr>
3990</tbody></table>
798d6e29
MS
3991<h4 class="returnvalue">Return Value</h4>
3992 <p class="description">New attribute</p>
3993<h4 class="discussion">Discussion</h4>
3994 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
3995the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
3996<br>
3997The <code>group</code> parameter specifies the IPP attribute group tag: none
3998(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
3999event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4000(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4001(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
4002<h3 class="function"><a id="ippAddBooleans">ippAddBooleans</a></h3>
4003 <p class="description">Add an array of boolean values.</p>
4004<p class="code">
98d88c8d
MS
4005<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>
4006<h4 class="parameters">Parameters</h4>
4007<table class="list"><tbody>
4008<tr><th>ipp</th>
4009 <td class="description">IPP message</td></tr>
4010<tr><th>group</th>
4011 <td class="description">IPP group</td></tr>
4012<tr><th>name</th>
4013 <td class="description">Name of attribute</td></tr>
4014<tr><th>num_values</th>
4015 <td class="description">Number of values</td></tr>
4016<tr><th>values</th>
4017 <td class="description">Values</td></tr>
4018</tbody></table>
798d6e29
MS
4019<h4 class="returnvalue">Return Value</h4>
4020 <p class="description">New attribute</p>
4021<h4 class="discussion">Discussion</h4>
4022 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4023the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4024<br>
4025The <code>group</code> parameter specifies the IPP attribute group tag: none
4026(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4027event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4028(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4029(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
4030<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="ippAddCollection">ippAddCollection</a></h3>
4031 <p class="description">Add a collection value.</p>
4032<p class="code">
98d88c8d
MS
4033<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>
4034<h4 class="parameters">Parameters</h4>
4035<table class="list"><tbody>
4036<tr><th>ipp</th>
4037 <td class="description">IPP message</td></tr>
4038<tr><th>group</th>
4039 <td class="description">IPP group</td></tr>
4040<tr><th>name</th>
4041 <td class="description">Name of attribute</td></tr>
4042<tr><th>value</th>
4043 <td class="description">Value</td></tr>
4044</tbody></table>
798d6e29
MS
4045<h4 class="returnvalue">Return Value</h4>
4046 <p class="description">New attribute</p>
4047<h4 class="discussion">Discussion</h4>
4048 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4049the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4050<br>
4051The <code>group</code> parameter specifies the IPP attribute group tag: none
4052(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4053event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4054(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4055(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).
4056
4057</p>
4058<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="ippAddCollections">ippAddCollections</a></h3>
4059 <p class="description">Add an array of collection values.</p>
4060<p class="code">
98d88c8d
MS
4061<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>
4062<h4 class="parameters">Parameters</h4>
4063<table class="list"><tbody>
4064<tr><th>ipp</th>
4065 <td class="description">IPP message</td></tr>
4066<tr><th>group</th>
4067 <td class="description">IPP group</td></tr>
4068<tr><th>name</th>
4069 <td class="description">Name of attribute</td></tr>
4070<tr><th>num_values</th>
4071 <td class="description">Number of values</td></tr>
4072<tr><th>values</th>
4073 <td class="description">Values</td></tr>
4074</tbody></table>
798d6e29
MS
4075<h4 class="returnvalue">Return Value</h4>
4076 <p class="description">New attribute</p>
4077<h4 class="discussion">Discussion</h4>
4078 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4079the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4080<br>
4081The <code>group</code> parameter specifies the IPP attribute group tag: none
4082(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4083event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4084(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4085(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).
4086
4087</p>
4088<h3 class="function"><a id="ippAddDate">ippAddDate</a></h3>
65bebeac 4089 <p class="description">Add a dateTime attribute to an IPP message.</p>
798d6e29 4090<p class="code">
98d88c8d
MS
4091<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>
4092<h4 class="parameters">Parameters</h4>
4093<table class="list"><tbody>
4094<tr><th>ipp</th>
4095 <td class="description">IPP message</td></tr>
4096<tr><th>group</th>
4097 <td class="description">IPP group</td></tr>
4098<tr><th>name</th>
4099 <td class="description">Name of attribute</td></tr>
4100<tr><th>value</th>
4101 <td class="description">Value</td></tr>
4102</tbody></table>
798d6e29
MS
4103<h4 class="returnvalue">Return Value</h4>
4104 <p class="description">New attribute</p>
4105<h4 class="discussion">Discussion</h4>
4106 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4107the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4108<br>
4109The <code>group</code> parameter specifies the IPP attribute group tag: none
4110(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4111event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4112(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4113(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
4114<h3 class="function"><a id="ippAddInteger">ippAddInteger</a></h3>
4115 <p class="description">Add a integer attribute to an IPP message.</p>
4116<p class="code">
98d88c8d
MS
4117<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>
4118<h4 class="parameters">Parameters</h4>
4119<table class="list"><tbody>
4120<tr><th>ipp</th>
4121 <td class="description">IPP message</td></tr>
4122<tr><th>group</th>
4123 <td class="description">IPP group</td></tr>
4124<tr><th>value_tag</th>
4125 <td class="description">Type of attribute</td></tr>
4126<tr><th>name</th>
4127 <td class="description">Name of attribute</td></tr>
4128<tr><th>value</th>
4129 <td class="description">Value of attribute</td></tr>
4130</tbody></table>
798d6e29
MS
4131<h4 class="returnvalue">Return Value</h4>
4132 <p class="description">New attribute</p>
4133<h4 class="discussion">Discussion</h4>
4134 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4135the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4136<br>
4137The <code>group</code> parameter specifies the IPP attribute group tag: none
4138(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4139event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4140(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4141(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4142<br>
4143Supported values include enum (<code>IPP_TAG_ENUM</code>) and integer
4144(<code>IPP_TAG_INTEGER</code>).</p>
4145<h3 class="function"><a id="ippAddIntegers">ippAddIntegers</a></h3>
4146 <p class="description">Add an array of integer values.</p>
4147<p class="code">
98d88c8d
MS
4148<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>
4149<h4 class="parameters">Parameters</h4>
4150<table class="list"><tbody>
4151<tr><th>ipp</th>
4152 <td class="description">IPP message</td></tr>
4153<tr><th>group</th>
4154 <td class="description">IPP group</td></tr>
4155<tr><th>value_tag</th>
4156 <td class="description">Type of attribute</td></tr>
4157<tr><th>name</th>
4158 <td class="description">Name of attribute</td></tr>
4159<tr><th>num_values</th>
4160 <td class="description">Number of values</td></tr>
4161<tr><th>values</th>
4162 <td class="description">Values</td></tr>
4163</tbody></table>
798d6e29
MS
4164<h4 class="returnvalue">Return Value</h4>
4165 <p class="description">New attribute</p>
4166<h4 class="discussion">Discussion</h4>
4167 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4168the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4169<br>
4170The <code>group</code> parameter specifies the IPP attribute group tag: none
4171(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4172event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4173(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4174(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4175<br>
4176Supported values include enum (<code>IPP_TAG_ENUM</code>) and integer
4177(<code>IPP_TAG_INTEGER</code>).</p>
4178<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippAddOctetString">ippAddOctetString</a></h3>
4179 <p class="description">Add an octetString value to an IPP message.</p>
4180<p class="code">
98d88c8d
MS
4181<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>
4182<h4 class="parameters">Parameters</h4>
4183<table class="list"><tbody>
4184<tr><th>ipp</th>
4185 <td class="description">IPP message</td></tr>
4186<tr><th>group</th>
4187 <td class="description">IPP group</td></tr>
4188<tr><th>name</th>
4189 <td class="description">Name of attribute</td></tr>
4190<tr><th>data</th>
4191 <td class="description">octetString data</td></tr>
4192<tr><th>datalen</th>
4193 <td class="description">Length of data in bytes</td></tr>
4194</tbody></table>
798d6e29
MS
4195<h4 class="returnvalue">Return Value</h4>
4196 <p class="description">New attribute</p>
4197<h4 class="discussion">Discussion</h4>
4198 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4199the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4200<br>
4201The <code>group</code> parameter specifies the IPP attribute group tag: none
4202(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4203event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4204(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4205(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).
4206
4207</p>
4208<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippAddOutOfBand">ippAddOutOfBand</a></h3>
4209 <p class="description">Add an out-of-band value to an IPP message.</p>
4210<p class="code">
98d88c8d
MS
4211<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>
4212<h4 class="parameters">Parameters</h4>
4213<table class="list"><tbody>
4214<tr><th>ipp</th>
4215 <td class="description">IPP message</td></tr>
4216<tr><th>group</th>
4217 <td class="description">IPP group</td></tr>
4218<tr><th>value_tag</th>
4219 <td class="description">Type of attribute</td></tr>
4220<tr><th>name</th>
4221 <td class="description">Name of attribute</td></tr>
4222</tbody></table>
798d6e29
MS
4223<h4 class="returnvalue">Return Value</h4>
4224 <p class="description">New attribute</p>
4225<h4 class="discussion">Discussion</h4>
4226 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4227the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4228<br>
4229The <code>group</code> parameter specifies the IPP attribute group tag: none
4230(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4231event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4232(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4233(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4234<br>
4235Supported out-of-band values include unsupported-value
4236(<code>IPP_TAG_UNSUPPORTED_VALUE</code>), default (<code>IPP_TAG_DEFAULT</code>), unknown
4237(<code>IPP_TAG_UNKNOWN</code>), no-value (<code>IPP_TAG_NOVALUE</code>), not-settable
4238(<code>IPP_TAG_NOTSETTABLE</code>), delete-attribute (<code>IPP_TAG_DELETEATTR</code>), and
4239admin-define (<code>IPP_TAG_ADMINDEFINE</code>).
4240
4241</p>
4242<h3 class="function"><a id="ippAddRange">ippAddRange</a></h3>
4243 <p class="description">Add a range of values to an IPP message.</p>
4244<p class="code">
98d88c8d
MS
4245<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>
4246<h4 class="parameters">Parameters</h4>
4247<table class="list"><tbody>
4248<tr><th>ipp</th>
4249 <td class="description">IPP message</td></tr>
4250<tr><th>group</th>
4251 <td class="description">IPP group</td></tr>
4252<tr><th>name</th>
4253 <td class="description">Name of attribute</td></tr>
4254<tr><th>lower</th>
4255 <td class="description">Lower value</td></tr>
4256<tr><th>upper</th>
4257 <td class="description">Upper value</td></tr>
4258</tbody></table>
798d6e29
MS
4259<h4 class="returnvalue">Return Value</h4>
4260 <p class="description">New attribute</p>
4261<h4 class="discussion">Discussion</h4>
4262 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4263the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4264<br>
4265The <code>group</code> parameter specifies the IPP attribute group tag: none
4266(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4267event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4268(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4269(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4270<br>
4271The <code>lower</code> parameter must be less than or equal to the <code>upper</code> parameter.</p>
4272<h3 class="function"><a id="ippAddRanges">ippAddRanges</a></h3>
4273 <p class="description">Add ranges of values to an IPP message.</p>
4274<p class="code">
98d88c8d
MS
4275<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>
4276<h4 class="parameters">Parameters</h4>
4277<table class="list"><tbody>
4278<tr><th>ipp</th>
4279 <td class="description">IPP message</td></tr>
4280<tr><th>group</th>
4281 <td class="description">IPP group</td></tr>
4282<tr><th>name</th>
4283 <td class="description">Name of attribute</td></tr>
4284<tr><th>num_values</th>
4285 <td class="description">Number of values</td></tr>
4286<tr><th>lower</th>
4287 <td class="description">Lower values</td></tr>
4288<tr><th>upper</th>
4289 <td class="description">Upper values</td></tr>
4290</tbody></table>
798d6e29
MS
4291<h4 class="returnvalue">Return Value</h4>
4292 <p class="description">New attribute</p>
4293<h4 class="discussion">Discussion</h4>
4294 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4295the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4296<br>
4297The <code>group</code> parameter specifies the IPP attribute group tag: none
4298(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4299event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4300(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4301(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
4302<h3 class="function"><a id="ippAddResolution">ippAddResolution</a></h3>
4303 <p class="description">Add a resolution value to an IPP message.</p>
4304<p class="code">
98d88c8d
MS
4305<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>
4306<h4 class="parameters">Parameters</h4>
4307<table class="list"><tbody>
4308<tr><th>ipp</th>
4309 <td class="description">IPP message</td></tr>
4310<tr><th>group</th>
4311 <td class="description">IPP group</td></tr>
4312<tr><th>name</th>
4313 <td class="description">Name of attribute</td></tr>
4314<tr><th>units</th>
4315 <td class="description">Units for resolution</td></tr>
4316<tr><th>xres</th>
4317 <td class="description">X resolution</td></tr>
4318<tr><th>yres</th>
4319 <td class="description">Y resolution</td></tr>
4320</tbody></table>
798d6e29
MS
4321<h4 class="returnvalue">Return Value</h4>
4322 <p class="description">New attribute</p>
4323<h4 class="discussion">Discussion</h4>
4324 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4325the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4326<br>
4327The <code>group</code> parameter specifies the IPP attribute group tag: none
4328(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4329event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4330(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4331(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
4332<h3 class="function"><a id="ippAddResolutions">ippAddResolutions</a></h3>
4333 <p class="description">Add resolution values to an IPP message.</p>
4334<p class="code">
98d88c8d
MS
4335<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>
4336<h4 class="parameters">Parameters</h4>
4337<table class="list"><tbody>
4338<tr><th>ipp</th>
4339 <td class="description">IPP message</td></tr>
4340<tr><th>group</th>
4341 <td class="description">IPP group</td></tr>
4342<tr><th>name</th>
4343 <td class="description">Name of attribute</td></tr>
4344<tr><th>num_values</th>
4345 <td class="description">Number of values</td></tr>
4346<tr><th>units</th>
4347 <td class="description">Units for resolution</td></tr>
4348<tr><th>xres</th>
4349 <td class="description">X resolutions</td></tr>
4350<tr><th>yres</th>
4351 <td class="description">Y resolutions</td></tr>
4352</tbody></table>
798d6e29
MS
4353<h4 class="returnvalue">Return Value</h4>
4354 <p class="description">New attribute</p>
4355<h4 class="discussion">Discussion</h4>
4356 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4357the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4358<br>
4359The <code>group</code> parameter specifies the IPP attribute group tag: none
4360(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4361event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4362(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4363(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).</p>
4364<h3 class="function"><a id="ippAddSeparator">ippAddSeparator</a></h3>
4365 <p class="description">Add a group separator to an IPP message.</p>
4366<p class="code">
98d88c8d 4367<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddSeparator(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 4368<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4369<table class="list"><tbody>
4370<tr><th>ipp</th>
4371 <td class="description">IPP message</td></tr>
4372</tbody></table>
798d6e29
MS
4373<h4 class="returnvalue">Return Value</h4>
4374 <p class="description">New attribute</p>
4375<h4 class="discussion">Discussion</h4>
4376 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4377the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.</p>
4378<h3 class="function"><a id="ippAddString">ippAddString</a></h3>
4379 <p class="description">Add a language-encoded string to an IPP message.</p>
4380<p class="code">
98d88c8d
MS
4381<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>
4382<h4 class="parameters">Parameters</h4>
4383<table class="list"><tbody>
4384<tr><th>ipp</th>
4385 <td class="description">IPP message</td></tr>
4386<tr><th>group</th>
4387 <td class="description">IPP group</td></tr>
4388<tr><th>value_tag</th>
4389 <td class="description">Type of attribute</td></tr>
4390<tr><th>name</th>
4391 <td class="description">Name of attribute</td></tr>
4392<tr><th>language</th>
4393 <td class="description">Language code</td></tr>
4394<tr><th>value</th>
4395 <td class="description">Value</td></tr>
4396</tbody></table>
798d6e29
MS
4397<h4 class="returnvalue">Return Value</h4>
4398 <p class="description">New attribute</p>
4399<h4 class="discussion">Discussion</h4>
4400 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4401the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4402<br>
4403The <code>group</code> parameter specifies the IPP attribute group tag: none
4404(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4405event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4406(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4407(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4408<br>
4409Supported string values include charset (<code>IPP_TAG_CHARSET</code>), keyword
4410(<code>IPP_TAG_KEYWORD</code>), language (<code>IPP_TAG_LANGUAGE</code>), mimeMediaType
4411(<code>IPP_TAG_MIMETYPE</code>), name (<code>IPP_TAG_NAME</code>), nameWithLanguage
4412(<code>IPP_TAG_NAMELANG), text (</code>code IPP_TAG_TEXT@), textWithLanguage
4413(<code>IPP_TAG_TEXTLANG</code>), uri (<code>IPP_TAG_URI</code>), and uriScheme
4414(<code>IPP_TAG_URISCHEME</code>).<br>
4415<br>
4416The <code>language</code> parameter must be non-<code>NULL</code> for nameWithLanguage and
4417textWithLanguage string values and must be <code>NULL</code> for all other string values.</p>
4418<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippAddStringf">ippAddStringf</a></h3>
4419 <p class="description">Add a formatted string to an IPP message.</p>
4420<p class="code">
98d88c8d
MS
4421<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>
4422<h4 class="parameters">Parameters</h4>
4423<table class="list"><tbody>
4424<tr><th>ipp</th>
4425 <td class="description">IPP message</td></tr>
4426<tr><th>group</th>
4427 <td class="description">IPP group</td></tr>
4428<tr><th>value_tag</th>
4429 <td class="description">Type of attribute</td></tr>
4430<tr><th>name</th>
4431 <td class="description">Name of attribute</td></tr>
4432<tr><th>language</th>
4433 <td class="description">Language code (<code>NULL</code> for default)</td></tr>
4434<tr><th>format</th>
4435 <td class="description">Printf-style format string</td></tr>
4436<tr><th>...</th>
4437 <td class="description">Additional arguments as needed</td></tr>
4438</tbody></table>
798d6e29
MS
4439<h4 class="returnvalue">Return Value</h4>
4440 <p class="description">New attribute</p>
4441<h4 class="discussion">Discussion</h4>
4442 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4443the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4444<br>
4445The <code>group</code> parameter specifies the IPP attribute group tag: none
4446(<code>IPP_TAG_ZERO</code>, for member attributes), document
4447(<code>IPP_TAG_DOCUMENT</code>), event notification
4448(<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation (<code>IPP_TAG_OPERATION</code>),
4449printer (<code>IPP_TAG_PRINTER</code>), subscription (<code>IPP_TAG_SUBSCRIPTION</code>),
4450or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4451<br>
4452Supported string values include charset (<code>IPP_TAG_CHARSET</code>), keyword
4453(<code>IPP_TAG_KEYWORD</code>), language (<code>IPP_TAG_LANGUAGE</code>), mimeMediaType
4454(<code>IPP_TAG_MIMETYPE</code>), name (<code>IPP_TAG_NAME</code>), nameWithLanguage
4455(<code>IPP_TAG_NAMELANG), text (</code>code IPP_TAG_TEXT@), textWithLanguage
4456(<code>IPP_TAG_TEXTLANG</code>), uri (<code>IPP_TAG_URI</code>), and uriScheme
4457(<code>IPP_TAG_URISCHEME</code>).<br>
4458<br>
4459The <code>language</code> parameter must be non-<code>NULL</code> for nameWithLanguage
4460and textWithLanguage string values and must be <code>NULL</code> for all other
4461string values.<br>
4462<br>
4463The <code>format</code> parameter uses formatting characters compatible with the
4464printf family of standard functions. Additional arguments follow it as
4465needed. The formatted string is truncated as needed to the maximum length of
4466the corresponding value type.
4467
4468</p>
4469<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippAddStringfv">ippAddStringfv</a></h3>
4470 <p class="description">Add a formatted string to an IPP message.</p>
4471<p class="code">
98d88c8d
MS
4472<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>
4473<h4 class="parameters">Parameters</h4>
4474<table class="list"><tbody>
4475<tr><th>ipp</th>
4476 <td class="description">IPP message</td></tr>
4477<tr><th>group</th>
4478 <td class="description">IPP group</td></tr>
4479<tr><th>value_tag</th>
4480 <td class="description">Type of attribute</td></tr>
4481<tr><th>name</th>
4482 <td class="description">Name of attribute</td></tr>
4483<tr><th>language</th>
4484 <td class="description">Language code (<code>NULL</code> for default)</td></tr>
4485<tr><th>format</th>
4486 <td class="description">Printf-style format string</td></tr>
4487<tr><th>ap</th>
4488 <td class="description">Additional arguments</td></tr>
4489</tbody></table>
798d6e29
MS
4490<h4 class="returnvalue">Return Value</h4>
4491 <p class="description">New attribute</p>
4492<h4 class="discussion">Discussion</h4>
4493 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4494the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4495<br>
4496The <code>group</code> parameter specifies the IPP attribute group tag: none
4497(<code>IPP_TAG_ZERO</code>, for member attributes), document
4498(<code>IPP_TAG_DOCUMENT</code>), event notification
4499(<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation (<code>IPP_TAG_OPERATION</code>),
4500printer (<code>IPP_TAG_PRINTER</code>), subscription (<code>IPP_TAG_SUBSCRIPTION</code>),
4501or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4502<br>
4503Supported string values include charset (<code>IPP_TAG_CHARSET</code>), keyword
4504(<code>IPP_TAG_KEYWORD</code>), language (<code>IPP_TAG_LANGUAGE</code>), mimeMediaType
4505(<code>IPP_TAG_MIMETYPE</code>), name (<code>IPP_TAG_NAME</code>), nameWithLanguage
4506(<code>IPP_TAG_NAMELANG), text (</code>code IPP_TAG_TEXT@), textWithLanguage
4507(<code>IPP_TAG_TEXTLANG</code>), uri (<code>IPP_TAG_URI</code>), and uriScheme
4508(<code>IPP_TAG_URISCHEME</code>).<br>
4509<br>
4510The <code>language</code> parameter must be non-<code>NULL</code> for nameWithLanguage
4511and textWithLanguage string values and must be <code>NULL</code> for all other
4512string values.<br>
4513<br>
4514The <code>format</code> parameter uses formatting characters compatible with the
4515printf family of standard functions. Additional arguments are passed in the
4516stdarg pointer <code>ap</code>. The formatted string is truncated as needed to the
4517maximum length of the corresponding value type.
4518
4519</p>
4520<h3 class="function"><a id="ippAddStrings">ippAddStrings</a></h3>
4521 <p class="description">Add language-encoded strings to an IPP message.</p>
4522<p class="code">
98d88c8d
MS
4523<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>
4524<h4 class="parameters">Parameters</h4>
4525<table class="list"><tbody>
4526<tr><th>ipp</th>
4527 <td class="description">IPP message</td></tr>
4528<tr><th>group</th>
4529 <td class="description">IPP group</td></tr>
4530<tr><th>value_tag</th>
4531 <td class="description">Type of attribute</td></tr>
4532<tr><th>name</th>
4533 <td class="description">Name of attribute</td></tr>
4534<tr><th>num_values</th>
4535 <td class="description">Number of values</td></tr>
4536<tr><th>language</th>
4537 <td class="description">Language code (<code>NULL</code> for default)</td></tr>
4538<tr><th>values</th>
4539 <td class="description">Values</td></tr>
4540</tbody></table>
798d6e29
MS
4541<h4 class="returnvalue">Return Value</h4>
4542 <p class="description">New attribute</p>
4543<h4 class="discussion">Discussion</h4>
4544 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
4545the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
4546<br>
4547The <code>group</code> parameter specifies the IPP attribute group tag: none
4548(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
4549event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
4550(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
4551(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).<br>
4552<br>
4553Supported string values include charset (<code>IPP_TAG_CHARSET</code>), keyword
4554(<code>IPP_TAG_KEYWORD</code>), language (<code>IPP_TAG_LANGUAGE</code>), mimeMediaType
4555(<code>IPP_TAG_MIMETYPE</code>), name (<code>IPP_TAG_NAME</code>), nameWithLanguage
4556(<code>IPP_TAG_NAMELANG), text (</code>code IPP_TAG_TEXT@), textWithLanguage
4557(<code>IPP_TAG_TEXTLANG</code>), uri (<code>IPP_TAG_URI</code>), and uriScheme
4558(<code>IPP_TAG_URISCHEME</code>).<br>
4559<br>
4560The <code>language</code> parameter must be non-<code>NULL</code> for nameWithLanguage and
4561textWithLanguage string values and must be <code>NULL</code> for all other string values.</p>
4562<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippAttributeString">ippAttributeString</a></h3>
4563 <p class="description">Convert the attribute's value to a string.</p>
4564<p class="code">
98d88c8d
MS
4565size_t ippAttributeString(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, char *buffer, size_t bufsize);</p>
4566<h4 class="parameters">Parameters</h4>
4567<table class="list"><tbody>
4568<tr><th>attr</th>
4569 <td class="description">Attribute</td></tr>
4570<tr><th>buffer</th>
4571 <td class="description">String buffer or NULL</td></tr>
4572<tr><th>bufsize</th>
4573 <td class="description">Size of string buffer</td></tr>
4574</tbody></table>
798d6e29
MS
4575<h4 class="returnvalue">Return Value</h4>
4576 <p class="description">Number of bytes less nul</p>
4577<h4 class="discussion">Discussion</h4>
4578 <p class="discussion">Returns the number of bytes that would be written, not including the
4579trailing nul. The buffer pointer can be NULL to get the required length,
4580just like (v)snprintf.
4581
4582</p>
4583<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippContainsInteger">ippContainsInteger</a></h3>
4584 <p class="description">Determine whether an attribute contains the
4585specified value or is within the list of ranges.</p>
4586<p class="code">
98d88c8d 4587int ippContainsInteger(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int value);</p>
798d6e29 4588<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4589<table class="list"><tbody>
4590<tr><th>attr</th>
4591 <td class="description">Attribute</td></tr>
4592<tr><th>value</th>
4593 <td class="description">Integer/enum value</td></tr>
4594</tbody></table>
798d6e29
MS
4595<h4 class="returnvalue">Return Value</h4>
4596 <p class="description">1 on a match, 0 on no match</p>
4597<h4 class="discussion">Discussion</h4>
4598 <p class="discussion">Returns non-zero when the attribute contains either a matching integer or
4599enum value, or the value falls within one of the rangeOfInteger values for
4600the attribute.
4601
4602</p>
4603<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippContainsString">ippContainsString</a></h3>
4604 <p class="description">Determine whether an attribute contains the
4605specified string value.</p>
4606<p class="code">
98d88c8d 4607int ippContainsString(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, const char *value);</p>
798d6e29 4608<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4609<table class="list"><tbody>
4610<tr><th>attr</th>
4611 <td class="description">Attribute</td></tr>
4612<tr><th>value</th>
4613 <td class="description">String value</td></tr>
4614</tbody></table>
798d6e29
MS
4615<h4 class="returnvalue">Return Value</h4>
4616 <p class="description">1 on a match, 0 on no match</p>
4617<h4 class="discussion">Discussion</h4>
4618 <p class="discussion">Returns non-zero when the attribute contains a matching charset, keyword,
65bebeac 4619naturalLanguage, mimeMediaType, name, text, uri, or uriScheme value.
798d6e29
MS
4620
4621</p>
4622<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippCopyAttribute">ippCopyAttribute</a></h3>
4623 <p class="description">Copy an attribute.</p>
4624<p class="code">
98d88c8d
MS
4625<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>
4626<h4 class="parameters">Parameters</h4>
4627<table class="list"><tbody>
4628<tr><th>dst</th>
4629 <td class="description">Destination IPP message</td></tr>
4630<tr><th>srcattr</th>
4631 <td class="description">Attribute to copy</td></tr>
4632<tr><th>quickcopy</th>
4633 <td class="description">1 for a referenced copy, 0 for normal</td></tr>
4634</tbody></table>
798d6e29
MS
4635<h4 class="returnvalue">Return Value</h4>
4636 <p class="description">New attribute</p>
4637<h4 class="discussion">Discussion</h4>
4638 <p class="discussion">The specified attribute, <code>attr</code>, is copied to the destination IPP message.
4639When <code>quickcopy</code> is non-zero, a &quot;shallow&quot; reference copy of the attribute is
4640created - this should only be done as long as the original source IPP message will
4641not be freed for the life of the destination.
4642
4643</p>
4644<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippCopyAttributes">ippCopyAttributes</a></h3>
4645 <p class="description">Copy attributes from one IPP message to another.</p>
4646<p class="code">
98d88c8d
MS
4647int 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>
4648<h4 class="parameters">Parameters</h4>
4649<table class="list"><tbody>
4650<tr><th>dst</th>
4651 <td class="description">Destination IPP message</td></tr>
4652<tr><th>src</th>
4653 <td class="description">Source IPP message</td></tr>
4654<tr><th>quickcopy</th>
4655 <td class="description">1 for a referenced copy, 0 for normal</td></tr>
4656<tr><th>cb</th>
4657 <td class="description">Copy callback or <code>NULL</code> for none</td></tr>
4658<tr><th>context</th>
4659 <td class="description">Context pointer</td></tr>
4660</tbody></table>
798d6e29
MS
4661<h4 class="returnvalue">Return Value</h4>
4662 <p class="description">1 on success, 0 on error</p>
4663<h4 class="discussion">Discussion</h4>
4664 <p class="discussion">Zero or more attributes are copied from the source IPP message, <code>src</code>, to the
4665destination IPP message, <code>dst</code>. When <code>quickcopy</code> is non-zero, a &quot;shallow&quot;
4666reference copy of the attribute is created - this should only be done as long as the
4667original source IPP message will not be freed for the life of the destination.<br>
4668<br>
4669The <code>cb</code> and <code>context</code> parameters provide a generic way to &quot;filter&quot; the
4670attributes that are copied - the function must return 1 to copy the attribute or
46710 to skip it. The function may also choose to do a partial copy of the source attribute
4672itself.
4673
4674</p>
4675<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippCreateRequestedArray">ippCreateRequestedArray</a></h3>
4676 <p class="description">Create a CUPS array of attribute names from the
4677given requested-attributes attribute.</p>
4678<p class="code">
98d88c8d 4679cups_array_t *ippCreateRequestedArray(<a href="#ipp_t">ipp_t</a> *request);</p>
798d6e29 4680<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4681<table class="list"><tbody>
4682<tr><th>request</th>
4683 <td class="description">IPP request</td></tr>
4684</tbody></table>
798d6e29
MS
4685<h4 class="returnvalue">Return Value</h4>
4686 <p class="description">CUPS array or <code>NULL</code> if all</p>
4687<h4 class="discussion">Discussion</h4>
4688 <p class="discussion">This function creates a (sorted) CUPS array of attribute names matching the
4689list of &quot;requested-attribute&quot; values supplied in an IPP request. All IANA-
4690registered values are supported in addition to the CUPS IPP extension
4691attributes.<br>
4692<br>
4693The <code>request</code> parameter specifies the request message that was read from
4694the client.
4695
4696<code>NULL</code> is returned if all attributes should be returned. Otherwise, the
4697result is a sorted array of attribute names, where <code>cupsArrayFind(array,
4698"attribute-name")</code> will return a non-NULL pointer. The array must be freed
4699using the <code>cupsArrayDelete</code> function.
4700
4701</p>
4702<h3 class="function"><a id="ippDateToTime">ippDateToTime</a></h3>
65bebeac
MS
4703 <p class="description">Convert from RFC 2579 Date/Time format to time in
4704seconds.</p>
798d6e29 4705<p class="code">
98d88c8d 4706time_t ippDateToTime(const <a href="#ipp_uchar_t">ipp_uchar_t</a> *date);</p>
798d6e29 4707<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4708<table class="list"><tbody>
4709<tr><th>date</th>
65bebeac 4710 <td class="description">RFC 2579 date info</td></tr>
98d88c8d 4711</tbody></table>
798d6e29
MS
4712<h4 class="returnvalue">Return Value</h4>
4713 <p class="description">UNIX time value</p>
4714<h3 class="function"><a id="ippDelete">ippDelete</a></h3>
98d88c8d 4715 <p class="description">Delete an IPP message.</p>
798d6e29 4716<p class="code">
98d88c8d 4717void ippDelete(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 4718<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4719<table class="list"><tbody>
4720<tr><th>ipp</th>
4721 <td class="description">IPP message</td></tr>
4722</tbody></table>
4723<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="ippDeleteAttribute">ippDeleteAttribute</a></h3>
53af7f21 4724 <p class="description">Delete a single attribute in an IPP message.</p>
98d88c8d
MS
4725<p class="code">
4726void ippDeleteAttribute(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
4727<h4 class="parameters">Parameters</h4>
4728<table class="list"><tbody>
4729<tr><th>ipp</th>
4730 <td class="description">IPP message</td></tr>
4731<tr><th>attr</th>
4732 <td class="description">Attribute to delete</td></tr>
4733</tbody></table>
798d6e29
MS
4734<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippDeleteValues">ippDeleteValues</a></h3>
4735 <p class="description">Delete values in an attribute.</p>
4736<p class="code">
98d88c8d
MS
4737int ippDeleteValues(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, int count);</p>
4738<h4 class="parameters">Parameters</h4>
4739<table class="list"><tbody>
4740<tr><th>ipp</th>
4741 <td class="description">IPP message</td></tr>
4742<tr><th>attr</th>
4743 <td class="description">Attribute</td></tr>
4744<tr><th>element</th>
4745 <td class="description">Index of first value to delete (0-based)</td></tr>
4746<tr><th>count</th>
4747 <td class="description">Number of values to delete</td></tr>
4748</tbody></table>
798d6e29
MS
4749<h4 class="returnvalue">Return Value</h4>
4750 <p class="description">1 on success, 0 on failure</p>
4751<h4 class="discussion">Discussion</h4>
4752 <p class="discussion">The <code>element</code> parameter specifies the first value to delete, starting at
47530. It must be less than the number of values returned by <a href="#ippGetCount"><code>ippGetCount</code></a>.<br>
4754<br>
4755The <code>attr</code> parameter may be modified as a result of setting the value.<br>
4756<br>
4757Deleting all values in an attribute deletes the attribute.
4758
4759</p>
4760<h3 class="function"><a id="ippEnumString">ippEnumString</a></h3>
4761 <p class="description">Return a string corresponding to the enum value.</p>
4762<p class="code">
98d88c8d 4763const char *ippEnumString(const char *attrname, int enumvalue);</p>
798d6e29 4764<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4765<table class="list"><tbody>
4766<tr><th>attrname</th>
4767 <td class="description">Attribute name</td></tr>
4768<tr><th>enumvalue</th>
4769 <td class="description">Enum value</td></tr>
4770</tbody></table>
798d6e29
MS
4771<h4 class="returnvalue">Return Value</h4>
4772 <p class="description">Enum string</p>
4773<h3 class="function"><a id="ippEnumValue">ippEnumValue</a></h3>
4774 <p class="description">Return the value associated with a given enum string.</p>
4775<p class="code">
98d88c8d 4776int ippEnumValue(const char *attrname, const char *enumstring);</p>
798d6e29 4777<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4778<table class="list"><tbody>
4779<tr><th>attrname</th>
4780 <td class="description">Attribute name</td></tr>
4781<tr><th>enumstring</th>
4782 <td class="description">Enum string</td></tr>
4783</tbody></table>
798d6e29
MS
4784<h4 class="returnvalue">Return Value</h4>
4785 <p class="description">Enum value or -1 if unknown</p>
4786<h3 class="function"><a id="ippErrorString">ippErrorString</a></h3>
4787 <p class="description">Return a name for the given status code.</p>
4788<p class="code">
98d88c8d 4789const char *ippErrorString(ipp_status_t error);</p>
798d6e29 4790<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4791<table class="list"><tbody>
4792<tr><th>error</th>
4793 <td class="description">Error status</td></tr>
4794</tbody></table>
798d6e29
MS
4795<h4 class="returnvalue">Return Value</h4>
4796 <p class="description">Text string</p>
4797<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippErrorValue">ippErrorValue</a></h3>
4798 <p class="description">Return a status code for the given name.</p>
4799<p class="code">
98d88c8d 4800ipp_status_t ippErrorValue(const char *name);</p>
798d6e29 4801<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4802<table class="list"><tbody>
4803<tr><th>name</th>
4804 <td class="description">Name</td></tr>
4805</tbody></table>
798d6e29
MS
4806<h4 class="returnvalue">Return Value</h4>
4807 <p class="description">IPP status code</p>
4808<h3 class="function"><a id="ippFindAttribute">ippFindAttribute</a></h3>
4809 <p class="description">Find a named attribute in a request.</p>
4810<p class="code">
98d88c8d
MS
4811<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>
4812<h4 class="parameters">Parameters</h4>
4813<table class="list"><tbody>
4814<tr><th>ipp</th>
4815 <td class="description">IPP message</td></tr>
4816<tr><th>name</th>
4817 <td class="description">Name of attribute</td></tr>
4818<tr><th>type</th>
4819 <td class="description">Type of attribute</td></tr>
4820</tbody></table>
798d6e29
MS
4821<h4 class="returnvalue">Return Value</h4>
4822 <p class="description">Matching attribute</p>
4823<h4 class="discussion">Discussion</h4>
4824 <p class="discussion">Starting with CUPS 2.0, the attribute name can contain a hierarchical list
4825of attribute and member names separated by slashes, for example
4826&quot;media-col/media-size&quot;.</p>
4827<h3 class="function"><a id="ippFindNextAttribute">ippFindNextAttribute</a></h3>
4828 <p class="description">Find the next named attribute in a request.</p>
4829<p class="code">
98d88c8d
MS
4830<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>
4831<h4 class="parameters">Parameters</h4>
4832<table class="list"><tbody>
4833<tr><th>ipp</th>
4834 <td class="description">IPP message</td></tr>
4835<tr><th>name</th>
4836 <td class="description">Name of attribute</td></tr>
4837<tr><th>type</th>
4838 <td class="description">Type of attribute</td></tr>
4839</tbody></table>
798d6e29
MS
4840<h4 class="returnvalue">Return Value</h4>
4841 <p class="description">Matching attribute</p>
4842<h4 class="discussion">Discussion</h4>
4843 <p class="discussion">Starting with CUPS 2.0, the attribute name can contain a hierarchical list
4844of attribute and member names separated by slashes, for example
4845&quot;media-col/media-size&quot;.</p>
4846<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippFirstAttribute">ippFirstAttribute</a></h3>
4847 <p class="description">Return the first attribute in the message.</p>
4848<p class="code">
98d88c8d 4849<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippFirstAttribute(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 4850<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4851<table class="list"><tbody>
4852<tr><th>ipp</th>
4853 <td class="description">IPP message</td></tr>
4854</tbody></table>
798d6e29
MS
4855<h4 class="returnvalue">Return Value</h4>
4856 <p class="description">First attribute or <code>NULL</code> if none</p>
4857<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetBoolean">ippGetBoolean</a></h3>
4858 <p class="description">Get a boolean value for an attribute.</p>
4859<p class="code">
98d88c8d 4860int ippGetBoolean(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element);</p>
798d6e29 4861<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4862<table class="list"><tbody>
4863<tr><th>attr</th>
4864 <td class="description">IPP attribute</td></tr>
4865<tr><th>element</th>
4866 <td class="description">Value number (0-based)</td></tr>
4867</tbody></table>
798d6e29
MS
4868<h4 class="returnvalue">Return Value</h4>
4869 <p class="description">Boolean value or 0 on error</p>
4870<h4 class="discussion">Discussion</h4>
4871 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4872<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4873
4874</p>
4875<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetCollection">ippGetCollection</a></h3>
4876 <p class="description">Get a collection value for an attribute.</p>
4877<p class="code">
98d88c8d 4878<a href="#ipp_t">ipp_t</a> *ippGetCollection(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element);</p>
798d6e29 4879<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4880<table class="list"><tbody>
4881<tr><th>attr</th>
4882 <td class="description">IPP attribute</td></tr>
4883<tr><th>element</th>
4884 <td class="description">Value number (0-based)</td></tr>
4885</tbody></table>
798d6e29
MS
4886<h4 class="returnvalue">Return Value</h4>
4887 <p class="description">Collection value or <code>NULL</code> on error</p>
4888<h4 class="discussion">Discussion</h4>
4889 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4890<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4891
4892</p>
4893<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetCount">ippGetCount</a></h3>
4894 <p class="description">Get the number of values in an attribute.</p>
4895<p class="code">
98d88c8d 4896int ippGetCount(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
798d6e29 4897<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4898<table class="list"><tbody>
4899<tr><th>attr</th>
4900 <td class="description">IPP attribute</td></tr>
4901</tbody></table>
798d6e29
MS
4902<h4 class="returnvalue">Return Value</h4>
4903 <p class="description">Number of values or 0 on error</p>
4904<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetDate">ippGetDate</a></h3>
65bebeac 4905 <p class="description">Get a dateTime value for an attribute.</p>
798d6e29 4906<p class="code">
98d88c8d 4907const <a href="#ipp_uchar_t">ipp_uchar_t</a> *ippGetDate(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element);</p>
798d6e29 4908<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4909<table class="list"><tbody>
4910<tr><th>attr</th>
4911 <td class="description">IPP attribute</td></tr>
4912<tr><th>element</th>
4913 <td class="description">Value number (0-based)</td></tr>
4914</tbody></table>
798d6e29 4915<h4 class="returnvalue">Return Value</h4>
65bebeac 4916 <p class="description">dateTime value or <code>NULL</code></p>
798d6e29
MS
4917<h4 class="discussion">Discussion</h4>
4918 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4919<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4920
4921</p>
4922<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetGroupTag">ippGetGroupTag</a></h3>
4923 <p class="description">Get the group associated with an attribute.</p>
4924<p class="code">
98d88c8d 4925ipp_tag_t ippGetGroupTag(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
798d6e29 4926<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4927<table class="list"><tbody>
4928<tr><th>attr</th>
4929 <td class="description">IPP attribute</td></tr>
4930</tbody></table>
798d6e29
MS
4931<h4 class="returnvalue">Return Value</h4>
4932 <p class="description">Group tag or <code>IPP_TAG_ZERO</code> on error</p>
4933<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetInteger">ippGetInteger</a></h3>
4934 <p class="description">Get the integer/enum value for an attribute.</p>
4935<p class="code">
98d88c8d 4936int ippGetInteger(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element);</p>
798d6e29 4937<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4938<table class="list"><tbody>
4939<tr><th>attr</th>
4940 <td class="description">IPP attribute</td></tr>
4941<tr><th>element</th>
4942 <td class="description">Value number (0-based)</td></tr>
4943</tbody></table>
798d6e29
MS
4944<h4 class="returnvalue">Return Value</h4>
4945 <p class="description">Value or 0 on error</p>
4946<h4 class="discussion">Discussion</h4>
4947 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4948<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4949
4950</p>
4951<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetName">ippGetName</a></h3>
4952 <p class="description">Get the attribute name.</p>
4953<p class="code">
98d88c8d 4954const char *ippGetName(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
798d6e29 4955<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4956<table class="list"><tbody>
4957<tr><th>attr</th>
4958 <td class="description">IPP attribute</td></tr>
4959</tbody></table>
798d6e29
MS
4960<h4 class="returnvalue">Return Value</h4>
4961 <p class="description">Attribute name or <code>NULL</code> for separators</p>
4962<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippGetOctetString">ippGetOctetString</a></h3>
4963 <p class="description">Get an octetString value from an IPP attribute.</p>
4964<p class="code">
98d88c8d
MS
4965void *ippGetOctetString(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element, int *datalen);</p>
4966<h4 class="parameters">Parameters</h4>
4967<table class="list"><tbody>
4968<tr><th>attr</th>
4969 <td class="description">IPP attribute</td></tr>
4970<tr><th>element</th>
4971 <td class="description">Value number (0-based)</td></tr>
4972<tr><th>datalen</th>
4973 <td class="description">Length of octetString data</td></tr>
4974</tbody></table>
798d6e29
MS
4975<h4 class="returnvalue">Return Value</h4>
4976 <p class="description">Pointer to octetString data</p>
4977<h4 class="discussion">Discussion</h4>
4978 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 4979<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
4980
4981</p>
4982<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetOperation">ippGetOperation</a></h3>
4983 <p class="description">Get the operation ID in an IPP message.</p>
4984<p class="code">
98d88c8d 4985ipp_op_t ippGetOperation(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 4986<h4 class="parameters">Parameters</h4>
98d88c8d
MS
4987<table class="list"><tbody>
4988<tr><th>ipp</th>
4989 <td class="description">IPP request message</td></tr>
4990</tbody></table>
798d6e29
MS
4991<h4 class="returnvalue">Return Value</h4>
4992 <p class="description">Operation ID or 0 on error</p>
4993<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetRange">ippGetRange</a></h3>
4994 <p class="description">Get a rangeOfInteger value from an attribute.</p>
4995<p class="code">
98d88c8d
MS
4996int ippGetRange(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element, int *uppervalue);</p>
4997<h4 class="parameters">Parameters</h4>
4998<table class="list"><tbody>
4999<tr><th>attr</th>
5000 <td class="description">IPP attribute</td></tr>
5001<tr><th>element</th>
5002 <td class="description">Value number (0-based)</td></tr>
5003<tr><th>uppervalue</th>
5004 <td class="description">Upper value of range</td></tr>
5005</tbody></table>
798d6e29
MS
5006<h4 class="returnvalue">Return Value</h4>
5007 <p class="description">Lower value of range or 0</p>
5008<h4 class="discussion">Discussion</h4>
5009 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 5010<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
5011
5012</p>
5013<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetRequestId">ippGetRequestId</a></h3>
5014 <p class="description">Get the request ID from an IPP message.</p>
5015<p class="code">
98d88c8d 5016int ippGetRequestId(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5017<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5018<table class="list"><tbody>
5019<tr><th>ipp</th>
5020 <td class="description">IPP message</td></tr>
5021</tbody></table>
798d6e29
MS
5022<h4 class="returnvalue">Return Value</h4>
5023 <p class="description">Request ID or 0 on error</p>
5024<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetResolution">ippGetResolution</a></h3>
5025 <p class="description">Get a resolution value for an attribute.</p>
5026<p class="code">
98d88c8d
MS
5027int 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>
5028<h4 class="parameters">Parameters</h4>
5029<table class="list"><tbody>
5030<tr><th>attr</th>
5031 <td class="description">IPP attribute</td></tr>
5032<tr><th>element</th>
5033 <td class="description">Value number (0-based)</td></tr>
5034<tr><th>yres</th>
5035 <td class="description">Vertical/feed resolution</td></tr>
5036<tr><th>units</th>
5037 <td class="description">Units for resolution</td></tr>
5038</tbody></table>
798d6e29
MS
5039<h4 class="returnvalue">Return Value</h4>
5040 <p class="description">Horizontal/cross feed resolution or 0</p>
5041<h4 class="discussion">Discussion</h4>
5042 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 5043<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
5044
5045</p>
5046<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetState">ippGetState</a></h3>
5047 <p class="description">Get the IPP message state.</p>
5048<p class="code">
98d88c8d 5049<a href="#ipp_state_t">ipp_state_t</a> ippGetState(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5050<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5051<table class="list"><tbody>
5052<tr><th>ipp</th>
5053 <td class="description">IPP message</td></tr>
5054</tbody></table>
798d6e29
MS
5055<h4 class="returnvalue">Return Value</h4>
5056 <p class="description">IPP message state value</p>
5057<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetStatusCode">ippGetStatusCode</a></h3>
5058 <p class="description">Get the status code from an IPP response or event message.</p>
5059<p class="code">
98d88c8d 5060ipp_status_t ippGetStatusCode(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5061<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5062<table class="list"><tbody>
5063<tr><th>ipp</th>
5064 <td class="description">IPP response or event message</td></tr>
5065</tbody></table>
798d6e29
MS
5066<h4 class="returnvalue">Return Value</h4>
5067 <p class="description">Status code in IPP message</p>
5068<h3 class="function"><a id="ippGetString">ippGetString</a></h3>
98d88c8d
MS
5069 <p class="description"></p>
5070<p class="code">
5071const char *ippGetString(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr, int element, const char **language);</p>
5072<h4 class="parameters">Parameters</h4>
5073<table class="list"><tbody>
5074<tr><th>attr</th>
5075 <td class="description">IPP attribute</td></tr>
5076<tr><th>element</th>
5077 <td class="description">Value number (0-based)</td></tr>
5078<tr><th>language</th>
5079 <td class="description">Language code (<code>NULL</code> for don't care)</td></tr>
5080</tbody></table>
798d6e29
MS
5081<h4 class="returnvalue">Return Value</h4>
5082 <p class="description">Get the string and optionally the language code for an attribute.</p>
5083 <p class="discussion">The <code>element</code> parameter specifies which value to get from 0 to
65bebeac 5084<code>ippGetCount(attr)</code> - 1.
798d6e29
MS
5085
5086</p>
5087<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetValueTag">ippGetValueTag</a></h3>
5088 <p class="description">Get the value tag for an attribute.</p>
5089<p class="code">
98d88c8d 5090ipp_tag_t ippGetValueTag(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
798d6e29 5091<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5092<table class="list"><tbody>
5093<tr><th>attr</th>
5094 <td class="description">IPP attribute</td></tr>
5095</tbody></table>
798d6e29
MS
5096<h4 class="returnvalue">Return Value</h4>
5097 <p class="description">Value tag or <code>IPP_TAG_ZERO</code> on error</p>
5098<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippGetVersion">ippGetVersion</a></h3>
5099 <p class="description">Get the major and minor version number from an IPP message.</p>
5100<p class="code">
98d88c8d 5101int ippGetVersion(<a href="#ipp_t">ipp_t</a> *ipp, int *minor);</p>
798d6e29 5102<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5103<table class="list"><tbody>
5104<tr><th>ipp</th>
5105 <td class="description">IPP message</td></tr>
5106<tr><th>minor</th>
65bebeac 5107 <td class="description">Minor version number or <code>NULL</code> for don't care</td></tr>
98d88c8d 5108</tbody></table>
798d6e29
MS
5109<h4 class="returnvalue">Return Value</h4>
5110 <p class="description">Major version number or 0 on error</p>
5111<h3 class="function"><a id="ippLength">ippLength</a></h3>
5112 <p class="description">Compute the length of an IPP message.</p>
5113<p class="code">
98d88c8d 5114size_t ippLength(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5115<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5116<table class="list"><tbody>
5117<tr><th>ipp</th>
5118 <td class="description">IPP message</td></tr>
5119</tbody></table>
798d6e29
MS
5120<h4 class="returnvalue">Return Value</h4>
5121 <p class="description">Size of IPP message</p>
5122<h3 class="function"><a id="ippNew">ippNew</a></h3>
5123 <p class="description">Allocate a new IPP message.</p>
5124<p class="code">
98d88c8d 5125<a href="#ipp_t">ipp_t</a> *ippNew(void);</p>
798d6e29
MS
5126<h4 class="returnvalue">Return Value</h4>
5127 <p class="description">New IPP message</p>
5128<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippNewRequest">ippNewRequest</a></h3>
5129 <p class="description">Allocate a new IPP request message.</p>
5130<p class="code">
98d88c8d 5131<a href="#ipp_t">ipp_t</a> *ippNewRequest(ipp_op_t op);</p>
798d6e29 5132<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5133<table class="list"><tbody>
5134<tr><th>op</th>
5135 <td class="description">Operation code</td></tr>
5136</tbody></table>
798d6e29
MS
5137<h4 class="returnvalue">Return Value</h4>
5138 <p class="description">IPP request message</p>
5139<h4 class="discussion">Discussion</h4>
65bebeac
MS
5140 <p class="discussion">The new request message is initialized with the &quot;attributes-charset&quot; and
5141&quot;attributes-natural-language&quot; attributes added. The
5142&quot;attributes-natural-language&quot; value is derived from the current locale.
798d6e29
MS
5143
5144</p>
5145<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippNewResponse">ippNewResponse</a></h3>
5146 <p class="description">Allocate a new IPP response message.</p>
5147<p class="code">
98d88c8d 5148<a href="#ipp_t">ipp_t</a> *ippNewResponse(<a href="#ipp_t">ipp_t</a> *request);</p>
798d6e29 5149<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5150<table class="list"><tbody>
5151<tr><th>request</th>
5152 <td class="description">IPP request message</td></tr>
5153</tbody></table>
798d6e29
MS
5154<h4 class="returnvalue">Return Value</h4>
5155 <p class="description">IPP response message</p>
5156<h4 class="discussion">Discussion</h4>
65bebeac
MS
5157 <p class="discussion">The new response message is initialized with the same &quot;version-number&quot;,
5158&quot;request-id&quot;, &quot;attributes-charset&quot;, and &quot;attributes-natural-language&quot; as the
5159provided request message. If the &quot;attributes-charset&quot; or
5160&quot;attributes-natural-language&quot; attributes are missing from the request,
5161'utf-8' and a value derived from the current locale are substituted,
798d6e29
MS
5162respectively.
5163
5164</p>
5165<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippNextAttribute">ippNextAttribute</a></h3>
5166 <p class="description">Return the next attribute in the message.</p>
5167<p class="code">
98d88c8d 5168<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippNextAttribute(<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>ipp</th>
5172 <td class="description">IPP message</td></tr>
5173</tbody></table>
798d6e29
MS
5174<h4 class="returnvalue">Return Value</h4>
5175 <p class="description">Next attribute or <code>NULL</code> if none</p>
5176<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippOpString">ippOpString</a></h3>
5177 <p class="description">Return a name for the given operation id.</p>
5178<p class="code">
98d88c8d 5179const char *ippOpString(ipp_op_t op);</p>
798d6e29 5180<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5181<table class="list"><tbody>
5182<tr><th>op</th>
5183 <td class="description">Operation ID</td></tr>
5184</tbody></table>
798d6e29
MS
5185<h4 class="returnvalue">Return Value</h4>
5186 <p class="description">Name</p>
5187<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippOpValue">ippOpValue</a></h3>
5188 <p class="description">Return an operation id for the given name.</p>
5189<p class="code">
98d88c8d 5190ipp_op_t ippOpValue(const char *name);</p>
798d6e29 5191<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5192<table class="list"><tbody>
5193<tr><th>name</th>
5194 <td class="description">Textual name</td></tr>
5195</tbody></table>
798d6e29
MS
5196<h4 class="returnvalue">Return Value</h4>
5197 <p class="description">Operation ID</p>
5198<h3 class="function"><a id="ippPort">ippPort</a></h3>
5199 <p class="description">Return the default IPP port number.</p>
5200<p class="code">
98d88c8d 5201int ippPort(void);</p>
798d6e29
MS
5202<h4 class="returnvalue">Return Value</h4>
5203 <p class="description">Port number</p>
5204<h3 class="function"><a id="ippRead">ippRead</a></h3>
5205 <p class="description">Read data for an IPP message from a HTTP connection.</p>
5206<p class="code">
98d88c8d 5207<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 5208<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5209<table class="list"><tbody>
5210<tr><th>http</th>
5211 <td class="description">HTTP connection</td></tr>
5212<tr><th>ipp</th>
5213 <td class="description">IPP data</td></tr>
5214</tbody></table>
798d6e29
MS
5215<h4 class="returnvalue">Return Value</h4>
5216 <p class="description">Current state</p>
5217<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="ippReadFile">ippReadFile</a></h3>
5218 <p class="description">Read data for an IPP message from a file.</p>
5219<p class="code">
98d88c8d 5220<a href="#ipp_state_t">ipp_state_t</a> ippReadFile(int fd, <a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5221<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5222<table class="list"><tbody>
5223<tr><th>fd</th>
5224 <td class="description">HTTP data</td></tr>
5225<tr><th>ipp</th>
5226 <td class="description">IPP data</td></tr>
5227</tbody></table>
798d6e29
MS
5228<h4 class="returnvalue">Return Value</h4>
5229 <p class="description">Current state</p>
5230<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippReadIO">ippReadIO</a></h3>
5231 <p class="description">Read data for an IPP message.</p>
5232<p class="code">
98d88c8d
MS
5233<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>
5234<h4 class="parameters">Parameters</h4>
5235<table class="list"><tbody>
5236<tr><th>src</th>
5237 <td class="description">Data source</td></tr>
5238<tr><th>cb</th>
5239 <td class="description">Read callback function</td></tr>
5240<tr><th>blocking</th>
5241 <td class="description">Use blocking IO?</td></tr>
5242<tr><th>parent</th>
5243 <td class="description">Parent request, if any</td></tr>
5244<tr><th>ipp</th>
5245 <td class="description">IPP data</td></tr>
5246</tbody></table>
798d6e29
MS
5247<h4 class="returnvalue">Return Value</h4>
5248 <p class="description">Current state</p>
5249<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetBoolean">ippSetBoolean</a></h3>
5250 <p class="description">Set a boolean value in an attribute.</p>
5251<p class="code">
98d88c8d
MS
5252int ippSetBoolean(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, int boolvalue);</p>
5253<h4 class="parameters">Parameters</h4>
5254<table class="list"><tbody>
5255<tr><th>ipp</th>
5256 <td class="description">IPP message</td></tr>
5257<tr><th>attr</th>
5258 <td class="description">IPP attribute</td></tr>
5259<tr><th>element</th>
5260 <td class="description">Value number (0-based)</td></tr>
5261<tr><th>boolvalue</th>
5262 <td class="description">Boolean value</td></tr>
5263</tbody></table>
798d6e29
MS
5264<h4 class="returnvalue">Return Value</h4>
5265 <p class="description">1 on success, 0 on failure</p>
5266<h4 class="discussion">Discussion</h4>
5267 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5268the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5269<br>
5270The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5271<br>
5272The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5273<code>ippGetCount(attr)</code>.
798d6e29
MS
5274
5275</p>
5276<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetCollection">ippSetCollection</a></h3>
5277 <p class="description">Set a collection value in an attribute.</p>
5278<p class="code">
98d88c8d
MS
5279int 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>
5280<h4 class="parameters">Parameters</h4>
5281<table class="list"><tbody>
5282<tr><th>ipp</th>
5283 <td class="description">IPP message</td></tr>
5284<tr><th>attr</th>
5285 <td class="description">IPP attribute</td></tr>
5286<tr><th>element</th>
5287 <td class="description">Value number (0-based)</td></tr>
5288<tr><th>colvalue</th>
5289 <td class="description">Collection value</td></tr>
5290</tbody></table>
798d6e29
MS
5291<h4 class="returnvalue">Return Value</h4>
5292 <p class="description">1 on success, 0 on failure</p>
5293<h4 class="discussion">Discussion</h4>
5294 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5295the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5296<br>
5297The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5298<br>
5299The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5300<code>ippGetCount(attr)</code>.
798d6e29
MS
5301
5302</p>
5303<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetDate">ippSetDate</a></h3>
65bebeac 5304 <p class="description">Set a dateTime value in an attribute.</p>
798d6e29 5305<p class="code">
98d88c8d
MS
5306int 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>
5307<h4 class="parameters">Parameters</h4>
5308<table class="list"><tbody>
5309<tr><th>ipp</th>
5310 <td class="description">IPP message</td></tr>
5311<tr><th>attr</th>
5312 <td class="description">IPP attribute</td></tr>
5313<tr><th>element</th>
5314 <td class="description">Value number (0-based)</td></tr>
5315<tr><th>datevalue</th>
65bebeac 5316 <td class="description">dateTime value</td></tr>
98d88c8d 5317</tbody></table>
798d6e29
MS
5318<h4 class="returnvalue">Return Value</h4>
5319 <p class="description">1 on success, 0 on failure</p>
5320<h4 class="discussion">Discussion</h4>
5321 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5322the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5323<br>
5324The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5325<br>
5326The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5327<code>ippGetCount(attr)</code>.
798d6e29
MS
5328
5329</p>
5330<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetGroupTag">ippSetGroupTag</a></h3>
5331 <p class="description">Set the group tag of an attribute.</p>
5332<p class="code">
98d88c8d
MS
5333int 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>
5334<h4 class="parameters">Parameters</h4>
5335<table class="list"><tbody>
5336<tr><th>ipp</th>
5337 <td class="description">IPP message</td></tr>
5338<tr><th>attr</th>
5339 <td class="description">Attribute</td></tr>
5340<tr><th>group_tag</th>
5341 <td class="description">Group tag</td></tr>
5342</tbody></table>
798d6e29
MS
5343<h4 class="returnvalue">Return Value</h4>
5344 <p class="description">1 on success, 0 on failure</p>
5345<h4 class="discussion">Discussion</h4>
5346 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5347the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5348<br>
5349The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5350<br>
5351The <code>group</code> parameter specifies the IPP attribute group tag: none
5352(<code>IPP_TAG_ZERO</code>, for member attributes), document (<code>IPP_TAG_DOCUMENT</code>),
5353event notification (<code>IPP_TAG_EVENT_NOTIFICATION</code>), operation
5354(<code>IPP_TAG_OPERATION</code>), printer (<code>IPP_TAG_PRINTER</code>), subscription
5355(<code>IPP_TAG_SUBSCRIPTION</code>), or unsupported (<code>IPP_TAG_UNSUPPORTED_GROUP</code>).
5356
5357</p>
5358<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetInteger">ippSetInteger</a></h3>
5359 <p class="description">Set an integer or enum value in an attribute.</p>
5360<p class="code">
98d88c8d
MS
5361int ippSetInteger(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, int element, int intvalue);</p>
5362<h4 class="parameters">Parameters</h4>
5363<table class="list"><tbody>
5364<tr><th>ipp</th>
5365 <td class="description">IPP message</td></tr>
5366<tr><th>attr</th>
5367 <td class="description">IPP attribute</td></tr>
5368<tr><th>element</th>
5369 <td class="description">Value number (0-based)</td></tr>
5370<tr><th>intvalue</th>
5371 <td class="description">Integer/enum value</td></tr>
5372</tbody></table>
798d6e29
MS
5373<h4 class="returnvalue">Return Value</h4>
5374 <p class="description">1 on success, 0 on failure</p>
5375<h4 class="discussion">Discussion</h4>
5376 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5377the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5378<br>
5379The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5380<br>
5381The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5382<code>ippGetCount(attr)</code>.
798d6e29
MS
5383
5384</p>
5385<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetName">ippSetName</a></h3>
5386 <p class="description">Set the name of an attribute.</p>
5387<p class="code">
98d88c8d
MS
5388int ippSetName(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_attribute_t">ipp_attribute_t</a> **attr, const char *name);</p>
5389<h4 class="parameters">Parameters</h4>
5390<table class="list"><tbody>
5391<tr><th>ipp</th>
5392 <td class="description">IPP message</td></tr>
5393<tr><th>attr</th>
5394 <td class="description">IPP attribute</td></tr>
5395<tr><th>name</th>
5396 <td class="description">Attribute name</td></tr>
5397</tbody></table>
798d6e29
MS
5398<h4 class="returnvalue">Return Value</h4>
5399 <p class="description">1 on success, 0 on failure</p>
5400<h4 class="discussion">Discussion</h4>
5401 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5402the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5403<br>
5404The <code>attr</code> parameter may be modified as a result of setting the value.
5405
5406</p>
5407<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippSetOctetString">ippSetOctetString</a></h3>
5408 <p class="description">Set an octetString value in an IPP attribute.</p>
5409<p class="code">
98d88c8d
MS
5410int 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>
5411<h4 class="parameters">Parameters</h4>
5412<table class="list"><tbody>
5413<tr><th>ipp</th>
5414 <td class="description">IPP message</td></tr>
5415<tr><th>attr</th>
5416 <td class="description">IPP attribute</td></tr>
5417<tr><th>element</th>
5418 <td class="description">Value number (0-based)</td></tr>
5419<tr><th>data</th>
5420 <td class="description">Pointer to octetString data</td></tr>
5421<tr><th>datalen</th>
5422 <td class="description">Length of octetString data</td></tr>
5423</tbody></table>
798d6e29
MS
5424<h4 class="returnvalue">Return Value</h4>
5425 <p class="description">1 on success, 0 on failure</p>
5426<h4 class="discussion">Discussion</h4>
5427 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5428the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5429<br>
5430The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5431<br>
5432The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5433<code>ippGetCount(attr)</code>.
798d6e29
MS
5434
5435</p>
5436<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetOperation">ippSetOperation</a></h3>
5437 <p class="description">Set the operation ID in an IPP request message.</p>
5438<p class="code">
98d88c8d 5439int ippSetOperation(<a href="#ipp_t">ipp_t</a> *ipp, ipp_op_t op);</p>
798d6e29 5440<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5441<table class="list"><tbody>
5442<tr><th>ipp</th>
5443 <td class="description">IPP request message</td></tr>
5444<tr><th>op</th>
5445 <td class="description">Operation ID</td></tr>
5446</tbody></table>
798d6e29
MS
5447<h4 class="returnvalue">Return Value</h4>
5448 <p class="description">1 on success, 0 on failure</p>
5449<h4 class="discussion">Discussion</h4>
5450 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5451the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.
5452
5453</p>
5454<h3 class="function"><a id="ippSetPort">ippSetPort</a></h3>
98d88c8d 5455 <p class="description">Set the default port number.</p>
798d6e29 5456<p class="code">
98d88c8d 5457void ippSetPort(int p);</p>
798d6e29 5458<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5459<table class="list"><tbody>
5460<tr><th>p</th>
5461 <td class="description">Port number to use</td></tr>
5462</tbody></table>
798d6e29
MS
5463<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetRange">ippSetRange</a></h3>
5464 <p class="description">Set a rangeOfInteger value in an attribute.</p>
5465<p class="code">
98d88c8d
MS
5466int 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>
5467<h4 class="parameters">Parameters</h4>
5468<table class="list"><tbody>
5469<tr><th>ipp</th>
5470 <td class="description">IPP message</td></tr>
5471<tr><th>attr</th>
5472 <td class="description">IPP attribute</td></tr>
5473<tr><th>element</th>
5474 <td class="description">Value number (0-based)</td></tr>
5475<tr><th>lowervalue</th>
5476 <td class="description">Lower bound for range</td></tr>
5477<tr><th>uppervalue</th>
5478 <td class="description">Upper bound for range</td></tr>
5479</tbody></table>
798d6e29
MS
5480<h4 class="returnvalue">Return Value</h4>
5481 <p class="description">1 on success, 0 on failure</p>
5482<h4 class="discussion">Discussion</h4>
5483 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5484the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5485<br>
5486The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5487<br>
5488The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5489<code>ippGetCount(attr)</code>.
798d6e29
MS
5490
5491</p>
5492<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetRequestId">ippSetRequestId</a></h3>
5493 <p class="description">Set the request ID in an IPP message.</p>
5494<p class="code">
98d88c8d 5495int ippSetRequestId(<a href="#ipp_t">ipp_t</a> *ipp, int request_id);</p>
798d6e29 5496<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5497<table class="list"><tbody>
5498<tr><th>ipp</th>
5499 <td class="description">IPP message</td></tr>
5500<tr><th>request_id</th>
5501 <td class="description">Request ID</td></tr>
5502</tbody></table>
798d6e29
MS
5503<h4 class="returnvalue">Return Value</h4>
5504 <p class="description">1 on success, 0 on failure</p>
5505<h4 class="discussion">Discussion</h4>
5506 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5507the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5508<br>
5509The <code>request_id</code> parameter must be greater than 0.
5510
5511</p>
5512<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetResolution">ippSetResolution</a></h3>
5513 <p class="description">Set a resolution value in an attribute.</p>
5514<p class="code">
98d88c8d
MS
5515int 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>
5516<h4 class="parameters">Parameters</h4>
5517<table class="list"><tbody>
5518<tr><th>ipp</th>
5519 <td class="description">IPP message</td></tr>
5520<tr><th>attr</th>
5521 <td class="description">IPP attribute</td></tr>
5522<tr><th>element</th>
5523 <td class="description">Value number (0-based)</td></tr>
5524<tr><th>unitsvalue</th>
5525 <td class="description">Resolution units</td></tr>
5526<tr><th>xresvalue</th>
5527 <td class="description">Horizontal/cross feed resolution</td></tr>
5528<tr><th>yresvalue</th>
5529 <td class="description">Vertical/feed resolution</td></tr>
5530</tbody></table>
798d6e29
MS
5531<h4 class="returnvalue">Return Value</h4>
5532 <p class="description">1 on success, 0 on failure</p>
5533<h4 class="discussion">Discussion</h4>
5534 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5535the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5536<br>
5537The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5538<br>
5539The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5540<code>ippGetCount(attr)</code>.
798d6e29
MS
5541
5542</p>
5543<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetState">ippSetState</a></h3>
5544 <p class="description">Set the current state of the IPP message.</p>
5545<p class="code">
98d88c8d 5546int ippSetState(<a href="#ipp_t">ipp_t</a> *ipp, <a href="#ipp_state_t">ipp_state_t</a> state);</p>
798d6e29 5547<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5548<table class="list"><tbody>
5549<tr><th>ipp</th>
5550 <td class="description">IPP message</td></tr>
5551<tr><th>state</th>
5552 <td class="description">IPP state value</td></tr>
5553</tbody></table>
798d6e29
MS
5554<h4 class="returnvalue">Return Value</h4>
5555 <p class="description">1 on success, 0 on failure</p>
5556<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetStatusCode">ippSetStatusCode</a></h3>
5557 <p class="description">Set the status code in an IPP response or event message.</p>
5558<p class="code">
98d88c8d 5559int ippSetStatusCode(<a href="#ipp_t">ipp_t</a> *ipp, ipp_status_t status);</p>
798d6e29 5560<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5561<table class="list"><tbody>
5562<tr><th>ipp</th>
5563 <td class="description">IPP response or event message</td></tr>
5564<tr><th>status</th>
5565 <td class="description">Status code</td></tr>
5566</tbody></table>
798d6e29
MS
5567<h4 class="returnvalue">Return Value</h4>
5568 <p class="description">1 on success, 0 on failure</p>
5569<h4 class="discussion">Discussion</h4>
5570 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5571the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.
5572
5573</p>
5574<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetString">ippSetString</a></h3>
5575 <p class="description">Set a string value in an attribute.</p>
5576<p class="code">
98d88c8d
MS
5577int 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>
5578<h4 class="parameters">Parameters</h4>
5579<table class="list"><tbody>
5580<tr><th>ipp</th>
5581 <td class="description">IPP message</td></tr>
5582<tr><th>attr</th>
5583 <td class="description">IPP attribute</td></tr>
5584<tr><th>element</th>
5585 <td class="description">Value number (0-based)</td></tr>
5586<tr><th>strvalue</th>
5587 <td class="description">String value</td></tr>
5588</tbody></table>
798d6e29
MS
5589<h4 class="returnvalue">Return Value</h4>
5590 <p class="description">1 on success, 0 on failure</p>
5591<h4 class="discussion">Discussion</h4>
5592 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5593the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5594<br>
5595The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5596<br>
5597The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5598<code>ippGetCount(attr)</code>.
798d6e29
MS
5599
5600</p>
5601<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippSetStringf">ippSetStringf</a></h3>
5602 <p class="description">Set a formatted string value of an attribute.</p>
5603<p class="code">
98d88c8d
MS
5604int 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>
5605<h4 class="parameters">Parameters</h4>
5606<table class="list"><tbody>
5607<tr><th>ipp</th>
5608 <td class="description">IPP message</td></tr>
5609<tr><th>attr</th>
5610 <td class="description">IPP attribute</td></tr>
5611<tr><th>element</th>
5612 <td class="description">Value number (0-based)</td></tr>
5613<tr><th>format</th>
5614 <td class="description">Printf-style format string</td></tr>
5615<tr><th>...</th>
5616 <td class="description">Additional arguments as needed</td></tr>
5617</tbody></table>
798d6e29
MS
5618<h4 class="returnvalue">Return Value</h4>
5619 <p class="description">1 on success, 0 on failure</p>
5620<h4 class="discussion">Discussion</h4>
5621 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5622the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5623<br>
5624The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5625<br>
5626The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5627<code>ippGetCount(attr)</code>.<br>
798d6e29
MS
5628<br>
5629The <code>format</code> parameter uses formatting characters compatible with the
5630printf family of standard functions. Additional arguments follow it as
5631needed. The formatted string is truncated as needed to the maximum length of
5632the corresponding value type.
5633
5634</p>
5635<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippSetStringfv">ippSetStringfv</a></h3>
5636 <p class="description">Set a formatted string value of an attribute.</p>
5637<p class="code">
98d88c8d
MS
5638int 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>
5639<h4 class="parameters">Parameters</h4>
5640<table class="list"><tbody>
5641<tr><th>ipp</th>
5642 <td class="description">IPP message</td></tr>
5643<tr><th>attr</th>
5644 <td class="description">IPP attribute</td></tr>
5645<tr><th>element</th>
5646 <td class="description">Value number (0-based)</td></tr>
5647<tr><th>format</th>
5648 <td class="description">Printf-style format string</td></tr>
5649<tr><th>ap</th>
5650 <td class="description">Pointer to additional arguments</td></tr>
5651</tbody></table>
798d6e29
MS
5652<h4 class="returnvalue">Return Value</h4>
5653 <p class="description">1 on success, 0 on failure</p>
5654<h4 class="discussion">Discussion</h4>
5655 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5656the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5657<br>
5658The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5659<br>
5660The <code>element</code> parameter specifies which value to set from 0 to
65bebeac 5661<code>ippGetCount(attr)</code>.<br>
798d6e29
MS
5662<br>
5663The <code>format</code> parameter uses formatting characters compatible with the
5664printf family of standard functions. Additional arguments follow it as
5665needed. The formatted string is truncated as needed to the maximum length of
5666the corresponding value type.
5667
5668</p>
5669<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetValueTag">ippSetValueTag</a></h3>
5670 <p class="description">Set the value tag of an attribute.</p>
5671<p class="code">
98d88c8d
MS
5672int 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>
5673<h4 class="parameters">Parameters</h4>
5674<table class="list"><tbody>
5675<tr><th>ipp</th>
5676 <td class="description">IPP message</td></tr>
5677<tr><th>attr</th>
5678 <td class="description">IPP attribute</td></tr>
5679<tr><th>value_tag</th>
5680 <td class="description">Value tag</td></tr>
5681</tbody></table>
798d6e29
MS
5682<h4 class="returnvalue">Return Value</h4>
5683 <p class="description">1 on success, 0 on failure</p>
5684<h4 class="discussion">Discussion</h4>
5685 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5686the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5687<br>
5688The <code>attr</code> parameter may be modified as a result of setting the value.<br>
5689<br>
5690Integer (<code>IPP_TAG_INTEGER</code>) values can be promoted to rangeOfInteger
5691(<code>IPP_TAG_RANGE</code>) values, the various string tags can be promoted to name
5692(<code>IPP_TAG_NAME</code>) or nameWithLanguage (<code>IPP_TAG_NAMELANG</code>) values, text
5693(<code>IPP_TAG_TEXT</code>) values can be promoted to textWithLanguage
5694(<code>IPP_TAG_TEXTLANG</code>) values, and all values can be demoted to the various
5695out-of-band value tags such as no-value (<code>IPP_TAG_NOVALUE</code>). All other changes
5696will be rejected.<br>
5697<br>
5698Promoting a string attribute to nameWithLanguage or textWithLanguage adds the language
5699code in the &quot;attributes-natural-language&quot; attribute or, if not present, the language
5700code for the current locale.
5701
5702</p>
5703<h3 class="function"><span class="info">&#160;CUPS 1.6/macOS 10.8&#160;</span><a id="ippSetVersion">ippSetVersion</a></h3>
5704 <p class="description">Set the version number in an IPP message.</p>
5705<p class="code">
98d88c8d
MS
5706int ippSetVersion(<a href="#ipp_t">ipp_t</a> *ipp, int major, int minor);</p>
5707<h4 class="parameters">Parameters</h4>
5708<table class="list"><tbody>
5709<tr><th>ipp</th>
5710 <td class="description">IPP message</td></tr>
5711<tr><th>major</th>
5712 <td class="description">Major version number (major.minor)</td></tr>
5713<tr><th>minor</th>
5714 <td class="description">Minor version number (major.minor)</td></tr>
5715</tbody></table>
798d6e29
MS
5716<h4 class="returnvalue">Return Value</h4>
5717 <p class="description">1 on success, 0 on failure</p>
5718<h4 class="discussion">Discussion</h4>
5719 <p class="discussion">The <code>ipp</code> parameter refers to an IPP message previously created using
5720the <a href="#ippNew"><code>ippNew</code></a>, <a href="#ippNewRequest"><code>ippNewRequest</code></a>, or <a href="#ippNewResponse"><code>ippNewResponse</code></a> functions.<br>
5721<br>
5722The valid version numbers are currently 1.0, 1.1, 2.0, 2.1, and 2.2.
5723
5724</p>
5725<h3 class="function"><span class="info">&#160;CUPS 2.0/OS 10.10&#160;</span><a id="ippStateString">ippStateString</a></h3>
5726 <p class="description">Return the name corresponding to a state value.</p>
5727<p class="code">
98d88c8d 5728const char *ippStateString(<a href="#ipp_state_t">ipp_state_t</a> state);</p>
798d6e29 5729<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5730<table class="list"><tbody>
5731<tr><th>state</th>
5732 <td class="description">State value</td></tr>
5733</tbody></table>
798d6e29
MS
5734<h4 class="returnvalue">Return Value</h4>
5735 <p class="description">State name</p>
5736<h3 class="function"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span><a id="ippTagString">ippTagString</a></h3>
5737 <p class="description">Return the tag name corresponding to a tag value.</p>
5738<p class="code">
98d88c8d 5739const char *ippTagString(ipp_tag_t tag);</p>
798d6e29 5740<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5741<table class="list"><tbody>
5742<tr><th>tag</th>
5743 <td class="description">Tag value</td></tr>
5744</tbody></table>
798d6e29
MS
5745<h4 class="returnvalue">Return Value</h4>
5746 <p class="description">Tag name</p>
5747<h4 class="discussion">Discussion</h4>
65bebeac 5748 <p class="discussion">The returned names are defined in RFC 8011 and the IANA IPP Registry.
798d6e29
MS
5749
5750</p>
5751<h3 class="function"><span class="info">&#160;CUPS 1.4/macOS 10.6&#160;</span><a id="ippTagValue">ippTagValue</a></h3>
5752 <p class="description">Return the tag value corresponding to a tag name.</p>
5753<p class="code">
98d88c8d 5754ipp_tag_t ippTagValue(const char *name);</p>
798d6e29 5755<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5756<table class="list"><tbody>
5757<tr><th>name</th>
5758 <td class="description">Tag name</td></tr>
5759</tbody></table>
798d6e29
MS
5760<h4 class="returnvalue">Return Value</h4>
5761 <p class="description">Tag value</p>
5762<h4 class="discussion">Discussion</h4>
65bebeac 5763 <p class="discussion">The tag names are defined in RFC 8011 and the IANA IPP Registry.
798d6e29
MS
5764
5765</p>
5766<h3 class="function"><a id="ippTimeToDate">ippTimeToDate</a></h3>
65bebeac 5767 <p class="description">Convert from time in seconds to RFC 2579 format.</p>
798d6e29 5768<p class="code">
98d88c8d 5769const <a href="#ipp_uchar_t">ipp_uchar_t</a> *ippTimeToDate(time_t t);</p>
798d6e29 5770<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5771<table class="list"><tbody>
5772<tr><th>t</th>
65bebeac 5773 <td class="description">Time in seconds</td></tr>
98d88c8d 5774</tbody></table>
798d6e29 5775<h4 class="returnvalue">Return Value</h4>
65bebeac 5776 <p class="description">RFC-2579 date/time data</p>
798d6e29
MS
5777<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippValidateAttribute">ippValidateAttribute</a></h3>
5778 <p class="description">Validate the contents of an attribute.</p>
5779<p class="code">
98d88c8d 5780int ippValidateAttribute(<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr);</p>
798d6e29 5781<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5782<table class="list"><tbody>
5783<tr><th>attr</th>
5784 <td class="description">Attribute</td></tr>
5785</tbody></table>
798d6e29
MS
5786<h4 class="returnvalue">Return Value</h4>
5787 <p class="description">1 if valid, 0 otherwise</p>
5788<h4 class="discussion">Discussion</h4>
5789 <p class="discussion">This function validates the contents of an attribute based on the name and
5790value tag. 1 is returned if the attribute is valid, 0 otherwise. On
65bebeac 5791failure, <a href="#cupsLastErrorString"><code>cupsLastErrorString</code></a> is set to a human-readable message.
798d6e29
MS
5792
5793</p>
5794<h3 class="function"><span class="info">&#160;CUPS 1.7/macOS 10.9&#160;</span><a id="ippValidateAttributes">ippValidateAttributes</a></h3>
5795 <p class="description">Validate all attributes in an IPP message.</p>
5796<p class="code">
98d88c8d 5797int ippValidateAttributes(<a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5798<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5799<table class="list"><tbody>
5800<tr><th>ipp</th>
5801 <td class="description">IPP message</td></tr>
5802</tbody></table>
798d6e29
MS
5803<h4 class="returnvalue">Return Value</h4>
5804 <p class="description">1 if valid, 0 otherwise</p>
5805<h4 class="discussion">Discussion</h4>
5806 <p class="discussion">This function validates the contents of the IPP message, including each
65bebeac
MS
5807attribute. Like <a href="#ippValidateAttribute"><code>ippValidateAttribute</code></a>, <a href="#cupsLastErrorString"><code>cupsLastErrorString</code></a> is
5808set to a human-readable message on failure.
798d6e29
MS
5809
5810</p>
5811<h3 class="function"><a id="ippWrite">ippWrite</a></h3>
5812 <p class="description">Write data for an IPP message to a HTTP connection.</p>
5813<p class="code">
98d88c8d 5814<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 5815<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5816<table class="list"><tbody>
5817<tr><th>http</th>
5818 <td class="description">HTTP connection</td></tr>
5819<tr><th>ipp</th>
5820 <td class="description">IPP data</td></tr>
5821</tbody></table>
798d6e29
MS
5822<h4 class="returnvalue">Return Value</h4>
5823 <p class="description">Current state</p>
5824<h3 class="function"><span class="info">&#160;CUPS 1.1.19/macOS 10.3&#160;</span><a id="ippWriteFile">ippWriteFile</a></h3>
5825 <p class="description">Write data for an IPP message to a file.</p>
5826<p class="code">
98d88c8d 5827<a href="#ipp_state_t">ipp_state_t</a> ippWriteFile(int fd, <a href="#ipp_t">ipp_t</a> *ipp);</p>
798d6e29 5828<h4 class="parameters">Parameters</h4>
98d88c8d
MS
5829<table class="list"><tbody>
5830<tr><th>fd</th>
5831 <td class="description">HTTP data</td></tr>
5832<tr><th>ipp</th>
5833 <td class="description">IPP data</td></tr>
5834</tbody></table>
798d6e29
MS
5835<h4 class="returnvalue">Return Value</h4>
5836 <p class="description">Current state</p>
5837<h3 class="function"><span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span><a id="ippWriteIO">ippWriteIO</a></h3>
5838 <p class="description">Write data for an IPP message.</p>
5839<p class="code">
98d88c8d
MS
5840<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>
5841<h4 class="parameters">Parameters</h4>
5842<table class="list"><tbody>
5843<tr><th>dst</th>
5844 <td class="description">Destination</td></tr>
5845<tr><th>cb</th>
5846 <td class="description">Write callback function</td></tr>
5847<tr><th>blocking</th>
5848 <td class="description">Use blocking IO?</td></tr>
5849<tr><th>parent</th>
5850 <td class="description">Parent IPP message</td></tr>
5851<tr><th>ipp</th>
5852 <td class="description">IPP data</td></tr>
5853</tbody></table>
798d6e29
MS
5854<h4 class="returnvalue">Return Value</h4>
5855 <p class="description">Current state</p>
798d6e29 5856 <h2 class="title"><a id="TYPES">Data Types</a></h2>
798d6e29
MS
5857 <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>
5858 <p class="description">Client credentials callback
5859</p>
5860 <p class="code">
53af7f21 5861typedef int(*)(http_t *http, void *tls, cups_array_t *distinguished_names, void *user_data)cups_client_cert_cb_t;
798d6e29
MS
5862</p>
5863 <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>
5864 <p class="description">Destination enumeration callback
5865</p>
5866 <p class="code">
5867typedef int(*)(void *user_data, unsigned flags, <a href="#cups_dest_t">cups_dest_t</a> *dest)cups_dest_cb_t;
5868</p>
5869 <h3 class="typedef"><a id="cups_dest_t">cups_dest_t</a></h3>
5870 <p class="description">Destination</p>
5871 <p class="code">
5872typedef struct <a href="#cups_dest_s">cups_dest_s</a> cups_dest_t;
5873</p>
5874 <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>
5875 <p class="description">Destination capability and status
5876information </p>
5877 <p class="code">
5878typedef struct _cups_dinfo_s cups_dinfo_t;
798d6e29
MS
5879</p>
5880 <h3 class="typedef"><a id="cups_job_t">cups_job_t</a></h3>
5881 <p class="description">Job</p>
5882 <p class="code">
5883typedef struct <a href="#cups_job_s">cups_job_s</a> cups_job_t;
798d6e29
MS
5884</p>
5885 <h3 class="typedef"><a id="cups_option_t">cups_option_t</a></h3>
5886 <p class="description">Printer Options</p>
5887 <p class="code">
5888typedef struct <a href="#cups_option_s">cups_option_s</a> cups_option_t;
5889</p>
5890 <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>
5891 <p class="description">New password callback
5892</p>
5893 <p class="code">
5894typedef 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
5895</p>
5896 <h3 class="typedef"><a id="cups_ptype_t">cups_ptype_t</a></h3>
5897 <p class="description">Printer type/capability bits</p>
5898 <p class="code">
5899typedef unsigned cups_ptype_t;
5900</p>
5901 <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>
5902 <p class="description">Server credentials callback
5903</p>
5904 <p class="code">
53af7f21 5905typedef int(*)(http_t *http, void *tls, cups_array_t *certs, void *user_data)cups_server_cert_cb_t;
798d6e29
MS
5906</p>
5907 <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>
5908 <p class="description">Media Size </p>
5909 <p class="code">
5910typedef struct <a href="#cups_size_s">cups_size_s</a> cups_size_t;
798d6e29
MS
5911</p>
5912 <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>
5913 <p class="description">Socket address union, which
5914makes using IPv6 and other
5915address types easier and
5916more portable. </p>
5917 <p class="code">
5918typedef union _http_addr_u / http_addr_t;
798d6e29
MS
5919</p>
5920 <h3 class="typedef"><a id="http_encoding_t">http_encoding_t</a></h3>
5921 <p class="description">HTTP transfer encoding values</p>
5922 <p class="code">
5923typedef enum <a href="#http_encoding_e">http_encoding_e</a> http_encoding_t;
5924</p>
5925 <h3 class="typedef"><a id="http_encryption_t">http_encryption_t</a></h3>
5926 <p class="description">HTTP encryption values</p>
5927 <p class="code">
5928typedef enum <a href="#http_encryption_e">http_encryption_e</a> http_encryption_t;
5929</p>
5930 <h3 class="typedef"><a id="http_field_t">http_field_t</a></h3>
5931 <p class="description">HTTP field names</p>
5932 <p class="code">
5933typedef enum <a href="#http_field_e">http_field_e</a> http_field_t;
5934</p>
5935 <h3 class="typedef"><a id="http_keepalive_t">http_keepalive_t</a></h3>
5936 <p class="description">HTTP keep-alive values</p>
5937 <p class="code">
5938typedef enum <a href="#http_keepalive_e">http_keepalive_e</a> http_keepalive_t;
5939</p>
5940 <h3 class="typedef"><a id="http_state_t">http_state_t</a></h3>
5941 <p class="description">HTTP state values; states
5942are server-oriented...</p>
5943 <p class="code">
5944typedef enum <a href="#http_state_e">http_state_e</a> http_state_t;
5945</p>
5946 <h3 class="typedef"><a id="http_t">http_t</a></h3>
5947 <p class="description">HTTP connection type</p>
5948 <p class="code">
5949typedef struct _http_s http_t;
5950</p>
5951 <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>
5952 <p class="description">HTTP timeout callback </p>
5953 <p class="code">
5954typedef int(*)(http_t *http, void *user_data)http_timeout_cb_t;
5955</p>
5956 <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>
5957 <p class="description">Level of trust for credentials </p>
5958 <p class="code">
5959typedef enum <a href="#http_trust_e">http_trust_e</a> http_trust_t;
5960</p>
5961 <h3 class="typedef"><a id="http_uri_coding_t">http_uri_coding_t</a></h3>
5962 <p class="description">URI en/decode flags</p>
5963 <p class="code">
5964typedef enum <a href="#http_uri_coding_e">http_uri_coding_e</a> http_uri_coding_t;
5965</p>
5966 <h3 class="typedef"><a id="http_uri_status_t"><span class="info">&#160;CUPS 1.2&#160;</span>http_uri_status_t</a></h3>
5967 <p class="description">URI separation status </p>
5968 <p class="code">
5969typedef enum <a href="#http_uri_status_e">http_uri_status_e</a> http_uri_status_t;
798d6e29
MS
5970</p>
5971 <h3 class="typedef"><a id="ipp_attribute_t">ipp_attribute_t</a></h3>
5972 <p class="description">IPP attribute</p>
5973 <p class="code">
5974typedef struct _ipp_attribute_s ipp_attribute_t;
5975</p>
65bebeac
MS
5976 <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>
5977 <p class="description">ippCopyAttributes callback function </p>
798d6e29
MS
5978 <p class="code">
5979typedef 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
5980</p>
5981 <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 5982 <p class="description">ippReadIO/ippWriteIO callback function </p>
798d6e29 5983 <p class="code">
98d88c8d 5984typedef ssize_t(*)(void *context, ipp_uchar_t *buffer, size_t bytes) ipp_iocb_t;
798d6e29
MS
5985</p>
5986 <h3 class="typedef"><a id="ipp_orient_t">ipp_orient_t</a></h3>
5987 <p class="description">Orientation values</p>
5988 <p class="code">
5989typedef enum <a href="#ipp_orient_e">ipp_orient_e</a> ipp_orient_t;
5990</p>
5991 <h3 class="typedef"><a id="ipp_pstate_t">ipp_pstate_t</a></h3>
65bebeac 5992 <p class="description">Printer state values</p>
798d6e29
MS
5993 <p class="code">
5994typedef enum <a href="#ipp_pstate_e">ipp_pstate_e</a> ipp_pstate_t;
5995</p>
5996 <h3 class="typedef"><a id="ipp_quality_t">ipp_quality_t</a></h3>
65bebeac 5997 <p class="description">Print quality values</p>
798d6e29
MS
5998 <p class="code">
5999typedef enum <a href="#ipp_quality_e">ipp_quality_e</a> ipp_quality_t;
6000</p>
6001 <h3 class="typedef"><a id="ipp_res_t">ipp_res_t</a></h3>
6002 <p class="description">Resolution units</p>
6003 <p class="code">
6004typedef enum <a href="#ipp_res_e">ipp_res_e</a> ipp_res_t;
06a5a4d3
MS
6005</p>
6006 <h3 class="typedef"><a id="ipp_rstate_t">ipp_rstate_t</a></h3>
6007 <p class="description">resource-state values</p>
6008 <p class="code">
6009typedef enum <a href="#ipp_rstate_e">ipp_rstate_e</a> ipp_rstate_t;
6010</p>
6011 <h3 class="typedef"><a id="ipp_sstate_t">ipp_sstate_t</a></h3>
6012 <p class="description">system-state values</p>
6013 <p class="code">
6014typedef enum <a href="#ipp_sstate_e">ipp_sstate_e</a> ipp_sstate_t;
798d6e29
MS
6015</p>
6016 <h3 class="typedef"><a id="ipp_state_t">ipp_state_t</a></h3>
65bebeac 6017 <p class="description">ipp_t state values</p>
798d6e29
MS
6018 <p class="code">
6019typedef enum <a href="#ipp_state_e">ipp_state_e</a> ipp_state_t;
6020</p>
6021 <h3 class="typedef"><a id="ipp_t">ipp_t</a></h3>
6022 <p class="description">IPP request/response data</p>
6023 <p class="code">
6024typedef struct _ipp_s ipp_t;
798d6e29
MS
6025</p>
6026 <h2 class="title"><a id="STRUCTURES">Structures</a></h2>
798d6e29
MS
6027<h3 class="struct"><a id="cups_dest_s">cups_dest_s</a></h3>
6028 <p class="description">Destination</p>
6029<p class="code">struct cups_dest_s {<br>
6030&#160;&#160;&#160;&#160;char *name, *instance;<br>
6031&#160;&#160;&#160;&#160;int is_default;<br>
6032&#160;&#160;&#160;&#160;int num_options;<br>
6033&#160;&#160;&#160;&#160;<a href="#cups_option_t">cups_option_t</a> *options;<br>
6034};</p>
6035<h4 class="members">Members</h4>
98d88c8d
MS
6036<table class="list"><tbody>
6037<tr><th>instance </th>
6038 <td class="description">Local instance name or NULL</td></tr>
6039<tr><th>is_default </th>
6040 <td class="description">Is this printer the default?</td></tr>
6041<tr><th>num_options </th>
6042 <td class="description">Number of options</td></tr>
6043<tr><th>options </th>
6044 <td class="description">Options</td></tr>
6045</tbody></table>
798d6e29
MS
6046<h3 class="struct"><a id="cups_job_s">cups_job_s</a></h3>
6047 <p class="description">Job</p>
6048<p class="code">struct cups_job_s {<br>
6049&#160;&#160;&#160;&#160;time_t completed_time;<br>
6050&#160;&#160;&#160;&#160;time_t creation_time;<br>
6051&#160;&#160;&#160;&#160;char *dest;<br>
6052&#160;&#160;&#160;&#160;char *format;<br>
6053&#160;&#160;&#160;&#160;int id;<br>
6054&#160;&#160;&#160;&#160;int priority;<br>
6055&#160;&#160;&#160;&#160;time_t processing_time;<br>
6056&#160;&#160;&#160;&#160;int size;<br>
6057&#160;&#160;&#160;&#160;ipp_jstate_t state;<br>
6058&#160;&#160;&#160;&#160;char *title;<br>
6059&#160;&#160;&#160;&#160;char *user;<br>
6060};</p>
6061<h4 class="members">Members</h4>
98d88c8d
MS
6062<table class="list"><tbody>
6063<tr><th>completed_time </th>
6064 <td class="description">Time the job was completed</td></tr>
6065<tr><th>creation_time </th>
6066 <td class="description">Time the job was created</td></tr>
6067<tr><th>dest </th>
6068 <td class="description">Printer or class name</td></tr>
6069<tr><th>format </th>
6070 <td class="description">Document format</td></tr>
6071<tr><th>id </th>
6072 <td class="description">The job ID</td></tr>
6073<tr><th>priority </th>
6074 <td class="description">Priority (1-100)</td></tr>
6075<tr><th>processing_time </th>
6076 <td class="description">Time the job was processed</td></tr>
6077<tr><th>size </th>
6078 <td class="description">Size in kilobytes</td></tr>
6079<tr><th>state </th>
6080 <td class="description">Job state</td></tr>
6081<tr><th>title </th>
6082 <td class="description">Title/job name</td></tr>
6083<tr><th>user </th>
6084 <td class="description">User that submitted the job</td></tr>
6085</tbody></table>
798d6e29
MS
6086<h3 class="struct"><a id="cups_option_s">cups_option_s</a></h3>
6087 <p class="description">Printer Options</p>
6088<p class="code">struct cups_option_s {<br>
6089&#160;&#160;&#160;&#160;char *name;<br>
6090&#160;&#160;&#160;&#160;char *value;<br>
6091};</p>
6092<h4 class="members">Members</h4>
98d88c8d
MS
6093<table class="list"><tbody>
6094<tr><th>name </th>
6095 <td class="description">Name of option</td></tr>
6096<tr><th>value </th>
6097 <td class="description">Value of option</td></tr>
6098</tbody></table>
798d6e29
MS
6099<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>
6100 <p class="description">Media Size </p>
6101<p class="code">struct cups_size_s {<br>
6102&#160;&#160;&#160;&#160;char media[128];<br>
6103&#160;&#160;&#160;&#160;int width, length, bottom, left, right, top;<br>
6104};</p>
6105<h4 class="members">Members</h4>
98d88c8d
MS
6106<table class="list"><tbody>
6107<tr><th>media[128] </th>
6108 <td class="description">Media name to use</td></tr>
6109<tr><th>top </th>
6110 <td class="description">Top margin in hundredths of
6111millimeters</td></tr>
6112</tbody></table>
798d6e29 6113 <h2 class="title"><a id="ENUMERATIONS">Constants</a></h2>
798d6e29
MS
6114 <h3 class="enumeration"><a id="cups_ptype_e">cups_ptype_e</a></h3>
6115 <p class="description">Printer type/capability bit
6116constants</p>
6117 <h4 class="constants">Constants</h4>
98d88c8d
MS
6118 <table class="list"><tbody>
6119 <tr><th>CUPS_PRINTER_AUTHENTICATED <span class="info">&#160;CUPS 1.2/macOS 10.5&#160;</span></th> <td class="description">Printer requires authentication
6120</td></tr>
6121 <tr><th>CUPS_PRINTER_BIND </th> <td class="description">Can bind output</td></tr>
6122 <tr><th>CUPS_PRINTER_BW </th> <td class="description">Can do B&amp;W printing</td></tr>
6123 <tr><th>CUPS_PRINTER_CLASS </th> <td class="description">Printer class</td></tr>
6124 <tr><th>CUPS_PRINTER_COLLATE </th> <td class="description">Can quickly collate copies</td></tr>
6125 <tr><th>CUPS_PRINTER_COLOR </th> <td class="description">Can do color printing</td></tr>
6126 <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
6127</td></tr>
6128 <tr><th>CUPS_PRINTER_COPIES </th> <td class="description">Can do copies in hardware</td></tr>
6129 <tr><th>CUPS_PRINTER_COVER </th> <td class="description">Can cover output</td></tr>
6130 <tr><th>CUPS_PRINTER_DEFAULT </th> <td class="description">Default printer on network</td></tr>
6131 <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>
6132 <tr><th>CUPS_PRINTER_DUPLEX </th> <td class="description">Can do two-sided printing</td></tr>
6133 <tr><th>CUPS_PRINTER_FAX </th> <td class="description">Fax queue</td></tr>
6134 <tr><th>CUPS_PRINTER_LARGE </th> <td class="description">Can print on D/E/A1/A0-size media</td></tr>
6135 <tr><th>CUPS_PRINTER_LOCAL </th> <td class="description">Local printer or class</td></tr>
6136 <tr><th>CUPS_PRINTER_MEDIUM </th> <td class="description">Can print on Tabloid/B/C/A3/A2-size media</td></tr>
6137 <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
6138</td></tr>
6139 <tr><th>CUPS_PRINTER_PUNCH </th> <td class="description">Can punch output</td></tr>
6140 <tr><th>CUPS_PRINTER_REJECTING </th> <td class="description">Printer is rejecting jobs</td></tr>
6141 <tr><th>CUPS_PRINTER_REMOTE </th> <td class="description">Remote printer or class</td></tr>
6142 <tr><th>CUPS_PRINTER_SMALL </th> <td class="description">Can print on Letter/Legal/A4-size media</td></tr>
6143 <tr><th>CUPS_PRINTER_SORT </th> <td class="description">Can sort output</td></tr>
6144 <tr><th>CUPS_PRINTER_STAPLE </th> <td class="description">Can staple output</td></tr>
6145 <tr><th>CUPS_PRINTER_VARIABLE </th> <td class="description">Can print on rolls and custom-size media</td></tr>
6146</tbody></table>
798d6e29
MS
6147 <h3 class="enumeration"><a id="http_encoding_e">http_encoding_e</a></h3>
6148 <p class="description">HTTP transfer encoding values</p>
6149 <h4 class="constants">Constants</h4>
98d88c8d
MS
6150 <table class="list"><tbody>
6151 <tr><th>HTTP_ENCODING_CHUNKED </th> <td class="description">Data is chunked</td></tr>
6152 <tr><th>HTTP_ENCODING_FIELDS </th> <td class="description">Sending HTTP fields</td></tr>
6153 <tr><th>HTTP_ENCODING_LENGTH </th> <td class="description">Data is sent with Content-Length</td></tr>
6154</tbody></table>
798d6e29
MS
6155 <h3 class="enumeration"><a id="http_encryption_e">http_encryption_e</a></h3>
6156 <p class="description">HTTP encryption values</p>
6157 <h4 class="constants">Constants</h4>
98d88c8d
MS
6158 <table class="list"><tbody>
6159 <tr><th>HTTP_ENCRYPTION_ALWAYS </th> <td class="description">Always encrypt (SSL)</td></tr>
6160 <tr><th>HTTP_ENCRYPTION_IF_REQUESTED </th> <td class="description">Encrypt if requested (TLS upgrade)</td></tr>
6161 <tr><th>HTTP_ENCRYPTION_NEVER </th> <td class="description">Never encrypt</td></tr>
6162 <tr><th>HTTP_ENCRYPTION_REQUIRED </th> <td class="description">Encryption is required (TLS upgrade)</td></tr>
6163</tbody></table>
798d6e29
MS
6164 <h3 class="enumeration"><a id="http_field_e">http_field_e</a></h3>
6165 <p class="description">HTTP field names</p>
6166 <h4 class="constants">Constants</h4>
98d88c8d
MS
6167 <table class="list"><tbody>
6168 <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>
6169 <tr><th>HTTP_FIELD_ACCEPT_LANGUAGE </th> <td class="description">Accept-Language field</td></tr>
6170 <tr><th>HTTP_FIELD_ACCEPT_RANGES </th> <td class="description">Accept-Ranges field</td></tr>
6171 <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 6172 <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
6173 <tr><th>HTTP_FIELD_AUTHORIZATION </th> <td class="description">Authorization field</td></tr>
6174 <tr><th>HTTP_FIELD_CONNECTION </th> <td class="description">Connection field</td></tr>
6175 <tr><th>HTTP_FIELD_CONTENT_ENCODING </th> <td class="description">Content-Encoding field</td></tr>
6176 <tr><th>HTTP_FIELD_CONTENT_LANGUAGE </th> <td class="description">Content-Language field</td></tr>
6177 <tr><th>HTTP_FIELD_CONTENT_LENGTH </th> <td class="description">Content-Length field</td></tr>
6178 <tr><th>HTTP_FIELD_CONTENT_LOCATION </th> <td class="description">Content-Location field</td></tr>
6179 <tr><th>HTTP_FIELD_CONTENT_MD5 </th> <td class="description">Content-MD5 field</td></tr>
6180 <tr><th>HTTP_FIELD_CONTENT_RANGE </th> <td class="description">Content-Range field</td></tr>
6181 <tr><th>HTTP_FIELD_CONTENT_TYPE </th> <td class="description">Content-Type field</td></tr>
6182 <tr><th>HTTP_FIELD_CONTENT_VERSION </th> <td class="description">Content-Version field</td></tr>
6183 <tr><th>HTTP_FIELD_DATE </th> <td class="description">Date field</td></tr>
6184 <tr><th>HTTP_FIELD_HOST </th> <td class="description">Host field</td></tr>
6185 <tr><th>HTTP_FIELD_IF_MODIFIED_SINCE </th> <td class="description">If-Modified-Since field</td></tr>
6186 <tr><th>HTTP_FIELD_IF_UNMODIFIED_SINCE </th> <td class="description">If-Unmodified-Since field</td></tr>
6187 <tr><th>HTTP_FIELD_KEEP_ALIVE </th> <td class="description">Keep-Alive field</td></tr>
6188 <tr><th>HTTP_FIELD_LAST_MODIFIED </th> <td class="description">Last-Modified field</td></tr>
6189 <tr><th>HTTP_FIELD_LINK </th> <td class="description">Link field</td></tr>
6190 <tr><th>HTTP_FIELD_LOCATION </th> <td class="description">Location field</td></tr>
6191 <tr><th>HTTP_FIELD_MAX </th> <td class="description">Maximum field index</td></tr>
6192 <tr><th>HTTP_FIELD_RANGE </th> <td class="description">Range field</td></tr>
6193 <tr><th>HTTP_FIELD_REFERER </th> <td class="description">Referer field</td></tr>
6194 <tr><th>HTTP_FIELD_RETRY_AFTER </th> <td class="description">Retry-After field</td></tr>
6195 <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>
6196 <tr><th>HTTP_FIELD_TRANSFER_ENCODING </th> <td class="description">Transfer-Encoding field</td></tr>
6197 <tr><th>HTTP_FIELD_UNKNOWN </th> <td class="description">Unknown field</td></tr>
6198 <tr><th>HTTP_FIELD_UPGRADE </th> <td class="description">Upgrade field</td></tr>
6199 <tr><th>HTTP_FIELD_USER_AGENT </th> <td class="description">User-Agent field</td></tr>
6200 <tr><th>HTTP_FIELD_WWW_AUTHENTICATE </th> <td class="description">WWW-Authenticate field</td></tr>
6201</tbody></table>
798d6e29
MS
6202 <h3 class="enumeration"><a id="http_keepalive_e">http_keepalive_e</a></h3>
6203 <p class="description">HTTP keep-alive values</p>
6204 <h4 class="constants">Constants</h4>
98d88c8d
MS
6205 <table class="list"><tbody>
6206 <tr><th>HTTP_KEEPALIVE_OFF </th> <td class="description">No keep alive support</td></tr>
6207 <tr><th>HTTP_KEEPALIVE_ON </th> <td class="description">Use keep alive</td></tr>
6208</tbody></table>
798d6e29
MS
6209 <h3 class="enumeration"><a id="http_state_e">http_state_e</a></h3>
6210 <p class="description">HTTP state values; states
6211are server-oriented...</p>
6212 <h4 class="constants">Constants</h4>
98d88c8d
MS
6213 <table class="list"><tbody>
6214 <tr><th>HTTP_STATE_CONNECT </th> <td class="description">CONNECT command, waiting for blank line</td></tr>
6215 <tr><th>HTTP_STATE_DELETE </th> <td class="description">DELETE command, waiting for blank line</td></tr>
6216 <tr><th>HTTP_STATE_ERROR </th> <td class="description">Error on socket</td></tr>
6217 <tr><th>HTTP_STATE_GET </th> <td class="description">GET command, waiting for blank line</td></tr>
6218 <tr><th>HTTP_STATE_GET_SEND </th> <td class="description">GET command, sending data</td></tr>
6219 <tr><th>HTTP_STATE_HEAD </th> <td class="description">HEAD command, waiting for blank line</td></tr>
6220 <tr><th>HTTP_STATE_OPTIONS </th> <td class="description">OPTIONS command, waiting for blank line</td></tr>
6221 <tr><th>HTTP_STATE_POST </th> <td class="description">POST command, waiting for blank line</td></tr>
6222 <tr><th>HTTP_STATE_POST_RECV </th> <td class="description">POST command, receiving data</td></tr>
6223 <tr><th>HTTP_STATE_POST_SEND </th> <td class="description">POST command, sending data</td></tr>
6224 <tr><th>HTTP_STATE_PUT </th> <td class="description">PUT command, waiting for blank line</td></tr>
6225 <tr><th>HTTP_STATE_PUT_RECV </th> <td class="description">PUT command, receiving data</td></tr>
6226 <tr><th>HTTP_STATE_STATUS </th> <td class="description">Command complete, sending status</td></tr>
6227 <tr><th>HTTP_STATE_TRACE </th> <td class="description">TRACE command, waiting for blank line</td></tr>
6228 <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>
6229 <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>
6230 <tr><th>HTTP_STATE_WAITING </th> <td class="description">Waiting for command</td></tr>
6231</tbody></table>
798d6e29
MS
6232 <h3 class="enumeration"><a id="http_status_e">http_status_e</a></h3>
6233 <p class="description">HTTP status codes</p>
6234 <h4 class="constants">Constants</h4>
98d88c8d
MS
6235 <table class="list"><tbody>
6236 <tr><th>HTTP_STATUS_ACCEPTED </th> <td class="description">DELETE command was successful</td></tr>
6237 <tr><th>HTTP_STATUS_BAD_GATEWAY </th> <td class="description">Bad gateway</td></tr>
6238 <tr><th>HTTP_STATUS_BAD_REQUEST </th> <td class="description">Bad request</td></tr>
6239 <tr><th>HTTP_STATUS_CONFLICT </th> <td class="description">Request is self-conflicting</td></tr>
6240 <tr><th>HTTP_STATUS_CONTINUE </th> <td class="description">Everything OK, keep going...</td></tr>
6241 <tr><th>HTTP_STATUS_CREATED </th> <td class="description">PUT command was successful</td></tr>
6242 <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>
6243 <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>
6244 <tr><th>HTTP_STATUS_ERROR </th> <td class="description">An error response from httpXxxx()</td></tr>
6245 <tr><th>HTTP_STATUS_EXPECTATION_FAILED </th> <td class="description">The expectation given in an Expect header field was not met</td></tr>
6246 <tr><th>HTTP_STATUS_FORBIDDEN </th> <td class="description">Forbidden to access this URI</td></tr>
699fe020 6247 <tr><th>HTTP_STATUS_FOUND </th> <td class="description">Document was found at a different URI</td></tr>
98d88c8d
MS
6248 <tr><th>HTTP_STATUS_GATEWAY_TIMEOUT </th> <td class="description">Gateway connection timed out</td></tr>
6249 <tr><th>HTTP_STATUS_GONE </th> <td class="description">Server has gone away</td></tr>
6250 <tr><th>HTTP_STATUS_LENGTH_REQUIRED </th> <td class="description">A content length or encoding is required</td></tr>
6251 <tr><th>HTTP_STATUS_METHOD_NOT_ALLOWED </th> <td class="description">Method is not allowed</td></tr>
6252 <tr><th>HTTP_STATUS_MOVED_PERMANENTLY </th> <td class="description">Document has moved permanently</td></tr>
98d88c8d
MS
6253 <tr><th>HTTP_STATUS_MULTIPLE_CHOICES </th> <td class="description">Multiple files match request</td></tr>
6254 <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>
6255 <tr><th>HTTP_STATUS_NOT_ACCEPTABLE </th> <td class="description">Not Acceptable</td></tr>
6256 <tr><th>HTTP_STATUS_NOT_AUTHORITATIVE </th> <td class="description">Information isn't authoritative</td></tr>
6257 <tr><th>HTTP_STATUS_NOT_FOUND </th> <td class="description">URI was not found</td></tr>
6258 <tr><th>HTTP_STATUS_NOT_IMPLEMENTED </th> <td class="description">Feature not implemented</td></tr>
6259 <tr><th>HTTP_STATUS_NOT_MODIFIED </th> <td class="description">File not modified</td></tr>
6260 <tr><th>HTTP_STATUS_NOT_SUPPORTED </th> <td class="description">HTTP version not supported</td></tr>
6261 <tr><th>HTTP_STATUS_NO_CONTENT </th> <td class="description">Successful command, no new data</td></tr>
6262 <tr><th>HTTP_STATUS_OK </th> <td class="description">OPTIONS/GET/HEAD/POST/TRACE command was successful</td></tr>
6263 <tr><th>HTTP_STATUS_PARTIAL_CONTENT </th> <td class="description">Only a partial file was received/sent</td></tr>
6264 <tr><th>HTTP_STATUS_PAYMENT_REQUIRED </th> <td class="description">Payment required</td></tr>
6265 <tr><th>HTTP_STATUS_PRECONDITION </th> <td class="description">Precondition failed</td></tr>
6266 <tr><th>HTTP_STATUS_PROXY_AUTHENTICATION </th> <td class="description">Proxy Authentication is Required</td></tr>
6267 <tr><th>HTTP_STATUS_REQUESTED_RANGE </th> <td class="description">The requested range is not satisfiable</td></tr>
6268 <tr><th>HTTP_STATUS_REQUEST_TIMEOUT </th> <td class="description">Request timed out</td></tr>
6269 <tr><th>HTTP_STATUS_REQUEST_TOO_LARGE </th> <td class="description">Request entity too large</td></tr>
6270 <tr><th>HTTP_STATUS_RESET_CONTENT </th> <td class="description">Content was reset/recreated</td></tr>
699fe020 6271 <tr><th>HTTP_STATUS_SEE_OTHER </th> <td class="description">See this other link</td></tr>
98d88c8d
MS
6272 <tr><th>HTTP_STATUS_SERVER_ERROR </th> <td class="description">Internal server error</td></tr>
6273 <tr><th>HTTP_STATUS_SERVICE_UNAVAILABLE </th> <td class="description">Service is unavailable</td></tr>
6274 <tr><th>HTTP_STATUS_SWITCHING_PROTOCOLS </th> <td class="description">HTTP upgrade to TLS/SSL</td></tr>
699fe020 6275 <tr><th>HTTP_STATUS_TEMPORARY_REDIRECT </th> <td class="description">Temporary redirection</td></tr>
98d88c8d
MS
6276 <tr><th>HTTP_STATUS_UNAUTHORIZED </th> <td class="description">Unauthorized to access host</td></tr>
6277 <tr><th>HTTP_STATUS_UNSUPPORTED_MEDIATYPE </th> <td class="description">The requested media type is unsupported</td></tr>
6278 <tr><th>HTTP_STATUS_UPGRADE_REQUIRED </th> <td class="description">Upgrade to SSL/TLS required</td></tr>
6279 <tr><th>HTTP_STATUS_URI_TOO_LONG </th> <td class="description">URI too long</td></tr>
6280 <tr><th>HTTP_STATUS_USE_PROXY </th> <td class="description">Must use a proxy to access this URI</td></tr>
6281</tbody></table>
798d6e29
MS
6282 <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>
6283 <p class="description">Level of trust for credentials </p>
6284 <h4 class="constants">Constants</h4>
98d88c8d
MS
6285 <table class="list"><tbody>
6286 <tr><th>HTTP_TRUST_CHANGED </th> <td class="description">Credentials have changed</td></tr>
6287 <tr><th>HTTP_TRUST_EXPIRED </th> <td class="description">Credentials are expired</td></tr>
6288 <tr><th>HTTP_TRUST_INVALID </th> <td class="description">Credentials are invalid</td></tr>
6289 <tr><th>HTTP_TRUST_OK </th> <td class="description">Credentials are OK/trusted</td></tr>
6290 <tr><th>HTTP_TRUST_RENEWED </th> <td class="description">Credentials have been renewed</td></tr>
6291 <tr><th>HTTP_TRUST_UNKNOWN </th> <td class="description">Credentials are unknown/new</td></tr>
6292</tbody></table>
798d6e29
MS
6293 <h3 class="enumeration"><a id="http_uri_coding_e">http_uri_coding_e</a></h3>
6294 <p class="description">URI en/decode flags</p>
6295 <h4 class="constants">Constants</h4>
98d88c8d
MS
6296 <table class="list"><tbody>
6297 <tr><th>HTTP_URI_CODING_ALL </th> <td class="description">En/decode everything</td></tr>
6298 <tr><th>HTTP_URI_CODING_HOSTNAME </th> <td class="description">En/decode the hostname portion</td></tr>
6299 <tr><th>HTTP_URI_CODING_MOST </th> <td class="description">En/decode all but the query</td></tr>
6300 <tr><th>HTTP_URI_CODING_NONE </th> <td class="description">Don't en/decode anything</td></tr>
6301 <tr><th>HTTP_URI_CODING_QUERY </th> <td class="description">En/decode the query portion</td></tr>
6302 <tr><th>HTTP_URI_CODING_RESOURCE </th> <td class="description">En/decode the resource portion</td></tr>
6303 <tr><th>HTTP_URI_CODING_RFC6874 </th> <td class="description">Use RFC 6874 address format</td></tr>
6304 <tr><th>HTTP_URI_CODING_USERNAME </th> <td class="description">En/decode the username portion</td></tr>
6305</tbody></table>
798d6e29
MS
6306 <h3 class="enumeration"><a id="http_uri_status_e"><span class="info">&#160;CUPS 1.2&#160;</span>http_uri_status_e</a></h3>
6307 <p class="description">URI separation status </p>
6308 <h4 class="constants">Constants</h4>
98d88c8d
MS
6309 <table class="list"><tbody>
6310 <tr><th>HTTP_URI_STATUS_BAD_ARGUMENTS </th> <td class="description">Bad arguments to function (error)</td></tr>
6311 <tr><th>HTTP_URI_STATUS_BAD_HOSTNAME </th> <td class="description">Bad hostname in URI (error)</td></tr>
6312 <tr><th>HTTP_URI_STATUS_BAD_PORT </th> <td class="description">Bad port number in URI (error)</td></tr>
6313 <tr><th>HTTP_URI_STATUS_BAD_RESOURCE </th> <td class="description">Bad resource in URI (error)</td></tr>
6314 <tr><th>HTTP_URI_STATUS_BAD_SCHEME </th> <td class="description">Bad scheme in URI (error)</td></tr>
6315 <tr><th>HTTP_URI_STATUS_BAD_URI </th> <td class="description">Bad/empty URI (error)</td></tr>
6316 <tr><th>HTTP_URI_STATUS_BAD_USERNAME </th> <td class="description">Bad username in URI (error)</td></tr>
6317 <tr><th>HTTP_URI_STATUS_MISSING_RESOURCE </th> <td class="description">Missing resource in URI (warning)</td></tr>
6318 <tr><th>HTTP_URI_STATUS_MISSING_SCHEME </th> <td class="description">Missing scheme in URI (warning)</td></tr>
6319 <tr><th>HTTP_URI_STATUS_OK </th> <td class="description">URI decoded OK</td></tr>
6320 <tr><th>HTTP_URI_STATUS_OVERFLOW </th> <td class="description">URI buffer for httpAssembleURI is too small</td></tr>
6321 <tr><th>HTTP_URI_STATUS_UNKNOWN_SCHEME </th> <td class="description">Unknown scheme in URI (warning)</td></tr>
6322</tbody></table>
798d6e29 6323 <h3 class="enumeration"><a id="ipp_finishings_e">ipp_finishings_e</a></h3>
718ee2ff 6324 <p class="description">Finishings values</p>
798d6e29 6325 <h4 class="constants">Constants</h4>
98d88c8d
MS
6326 <table class="list"><tbody>
6327 <tr><th>IPP_FINISHINGS_BALE </th> <td class="description">Bale (any type)</td></tr>
6328 <tr><th>IPP_FINISHINGS_BIND </th> <td class="description">Bind</td></tr>
6329 <tr><th>IPP_FINISHINGS_BIND_BOTTOM </th> <td class="description">Bind on bottom</td></tr>
6330 <tr><th>IPP_FINISHINGS_BIND_LEFT </th> <td class="description">Bind on left</td></tr>
6331 <tr><th>IPP_FINISHINGS_BIND_RIGHT </th> <td class="description">Bind on right</td></tr>
6332 <tr><th>IPP_FINISHINGS_BIND_TOP </th> <td class="description">Bind on top</td></tr>
6333 <tr><th>IPP_FINISHINGS_BOOKLET_MAKER </th> <td class="description">Fold to make booklet</td></tr>
6334 <tr><th>IPP_FINISHINGS_COAT </th> <td class="description">Apply protective liquid or powder coating</td></tr>
6335 <tr><th>IPP_FINISHINGS_COVER </th> <td class="description">Add cover</td></tr>
6336 <tr><th>IPP_FINISHINGS_EDGE_STITCH </th> <td class="description">Stitch along any side</td></tr>
6337 <tr><th>IPP_FINISHINGS_EDGE_STITCH_BOTTOM </th> <td class="description">Stitch along bottom edge</td></tr>
6338 <tr><th>IPP_FINISHINGS_EDGE_STITCH_LEFT </th> <td class="description">Stitch along left side</td></tr>
6339 <tr><th>IPP_FINISHINGS_EDGE_STITCH_RIGHT </th> <td class="description">Stitch along right side</td></tr>
6340 <tr><th>IPP_FINISHINGS_EDGE_STITCH_TOP </th> <td class="description">Stitch along top edge</td></tr>
6341 <tr><th>IPP_FINISHINGS_FOLD </th> <td class="description">Fold (any type)</td></tr>
6342 <tr><th>IPP_FINISHINGS_FOLD_ACCORDIAN </th> <td class="description">Accordian-fold the paper vertically into four sections</td></tr>
6343 <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>
6344 <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>
6345 <tr><th>IPP_FINISHINGS_FOLD_GATE </th> <td class="description">Fold the top and bottom quarters of the paper towards the midline</td></tr>
6346 <tr><th>IPP_FINISHINGS_FOLD_HALF </th> <td class="description">Fold the paper in half vertically</td></tr>
6347 <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>
6348 <tr><th>IPP_FINISHINGS_FOLD_LEFT_GATE </th> <td class="description">Fold the top quarter of the paper towards the midline</td></tr>
6349 <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>
6350 <tr><th>IPP_FINISHINGS_FOLD_PARALLEL </th> <td class="description">Fold the paper in half vertically two times, yielding four sections</td></tr>
6351 <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>
6352 <tr><th>IPP_FINISHINGS_FOLD_RIGHT_GATE </th> <td class="description">Fold the bottom quarter of the paper towards the midline</td></tr>
6353 <tr><th>IPP_FINISHINGS_FOLD_Z </th> <td class="description">Fold the paper vertically into three sections, forming a Z</td></tr>
6354 <tr><th>IPP_FINISHINGS_JOG_OFFSET </th> <td class="description">Offset for binding (any type)</td></tr>
6355 <tr><th>IPP_FINISHINGS_LAMINATE </th> <td class="description">Apply protective (solid) material</td></tr>
6356 <tr><th>IPP_FINISHINGS_NONE </th> <td class="description">No finishing</td></tr>
6357 <tr><th>IPP_FINISHINGS_PUNCH </th> <td class="description">Punch (any location/count)</td></tr>
6358 <tr><th>IPP_FINISHINGS_PUNCH_BOTTOM_LEFT </th> <td class="description">Punch 1 hole bottom left</td></tr>
6359 <tr><th>IPP_FINISHINGS_PUNCH_BOTTOM_RIGHT </th> <td class="description">Punch 1 hole bottom right</td></tr>
6360 <tr><th>IPP_FINISHINGS_PUNCH_DUAL_BOTTOM </th> <td class="description">Punch 2 holes bottom edge</td></tr>
6361 <tr><th>IPP_FINISHINGS_PUNCH_DUAL_LEFT </th> <td class="description">Punch 2 holes left side</td></tr>
6362 <tr><th>IPP_FINISHINGS_PUNCH_DUAL_RIGHT </th> <td class="description">Punch 2 holes right side</td></tr>
6363 <tr><th>IPP_FINISHINGS_PUNCH_DUAL_TOP </th> <td class="description">Punch 2 holes top edge</td></tr>
6364 <tr><th>IPP_FINISHINGS_PUNCH_MULTIPLE_BOTTOM </th> <td class="description">Pucnh multiple holes bottom edge</td></tr>
6365 <tr><th>IPP_FINISHINGS_PUNCH_MULTIPLE_LEFT </th> <td class="description">Pucnh multiple holes left side</td></tr>
6366 <tr><th>IPP_FINISHINGS_PUNCH_MULTIPLE_RIGHT </th> <td class="description">Pucnh multiple holes right side</td></tr>
6367 <tr><th>IPP_FINISHINGS_PUNCH_MULTIPLE_TOP </th> <td class="description">Pucnh multiple holes top edge</td></tr>
6368 <tr><th>IPP_FINISHINGS_PUNCH_QUAD_BOTTOM </th> <td class="description">Punch 4 holes bottom edge</td></tr>
6369 <tr><th>IPP_FINISHINGS_PUNCH_QUAD_LEFT </th> <td class="description">Punch 4 holes left side</td></tr>
6370 <tr><th>IPP_FINISHINGS_PUNCH_QUAD_RIGHT </th> <td class="description">Punch 4 holes right side</td></tr>
6371 <tr><th>IPP_FINISHINGS_PUNCH_QUAD_TOP </th> <td class="description">Punch 4 holes top edge</td></tr>
6372 <tr><th>IPP_FINISHINGS_PUNCH_TOP_LEFT </th> <td class="description">Punch 1 hole top left</td></tr>
6373 <tr><th>IPP_FINISHINGS_PUNCH_TOP_RIGHT </th> <td class="description">Punch 1 hole top right</td></tr>
6374 <tr><th>IPP_FINISHINGS_PUNCH_TRIPLE_BOTTOM </th> <td class="description">Punch 3 holes bottom edge</td></tr>
6375 <tr><th>IPP_FINISHINGS_PUNCH_TRIPLE_LEFT </th> <td class="description">Punch 3 holes left side</td></tr>
6376 <tr><th>IPP_FINISHINGS_PUNCH_TRIPLE_RIGHT </th> <td class="description">Punch 3 holes right side</td></tr>
6377 <tr><th>IPP_FINISHINGS_PUNCH_TRIPLE_TOP </th> <td class="description">Punch 3 holes top edge</td></tr>
6378 <tr><th>IPP_FINISHINGS_SADDLE_STITCH </th> <td class="description">Staple interior</td></tr>
6379 <tr><th>IPP_FINISHINGS_STAPLE </th> <td class="description">Staple (any location/method)</td></tr>
6380 <tr><th>IPP_FINISHINGS_STAPLE_BOTTOM_LEFT </th> <td class="description">Staple bottom left corner</td></tr>
6381 <tr><th>IPP_FINISHINGS_STAPLE_BOTTOM_RIGHT </th> <td class="description">Staple bottom right corner</td></tr>
6382 <tr><th>IPP_FINISHINGS_STAPLE_DUAL_BOTTOM </th> <td class="description">Two staples on bottom</td></tr>
6383 <tr><th>IPP_FINISHINGS_STAPLE_DUAL_LEFT </th> <td class="description">Two staples on left</td></tr>
6384 <tr><th>IPP_FINISHINGS_STAPLE_DUAL_RIGHT </th> <td class="description">Two staples on right</td></tr>
6385 <tr><th>IPP_FINISHINGS_STAPLE_DUAL_TOP </th> <td class="description">Two staples on top</td></tr>
6386 <tr><th>IPP_FINISHINGS_STAPLE_TOP_LEFT </th> <td class="description">Staple top left corner</td></tr>
6387 <tr><th>IPP_FINISHINGS_STAPLE_TOP_RIGHT </th> <td class="description">Staple top right corner</td></tr>
6388 <tr><th>IPP_FINISHINGS_STAPLE_TRIPLE_BOTTOM </th> <td class="description">Three staples on bottom</td></tr>
6389 <tr><th>IPP_FINISHINGS_STAPLE_TRIPLE_LEFT </th> <td class="description">Three staples on left</td></tr>
6390 <tr><th>IPP_FINISHINGS_STAPLE_TRIPLE_RIGHT </th> <td class="description">Three staples on right</td></tr>
6391 <tr><th>IPP_FINISHINGS_STAPLE_TRIPLE_TOP </th> <td class="description">Three staples on top</td></tr>
6392 <tr><th>IPP_FINISHINGS_TRIM </th> <td class="description">Trim (any type)</td></tr>
6393 <tr><th>IPP_FINISHINGS_TRIM_AFTER_COPIES </th> <td class="description">Trim output after each copy</td></tr>
6394 <tr><th>IPP_FINISHINGS_TRIM_AFTER_DOCUMENTS </th> <td class="description">Trim output after each document</td></tr>
6395 <tr><th>IPP_FINISHINGS_TRIM_AFTER_JOB </th> <td class="description">Trim output after job</td></tr>
6396 <tr><th>IPP_FINISHINGS_TRIM_AFTER_PAGES </th> <td class="description">Trim output after each page</td></tr>
6397</tbody></table>
798d6e29
MS
6398 <h3 class="enumeration"><a id="ipp_jstate_e">ipp_jstate_e</a></h3>
6399 <p class="description">Job states</p>
6400 <h4 class="constants">Constants</h4>
98d88c8d
MS
6401 <table class="list"><tbody>
6402 <tr><th>IPP_JSTATE_ABORTED </th> <td class="description">Job has aborted due to error</td></tr>
6403 <tr><th>IPP_JSTATE_CANCELED </th> <td class="description">Job has been canceled</td></tr>
6404 <tr><th>IPP_JSTATE_COMPLETED </th> <td class="description">Job has completed successfully</td></tr>
6405 <tr><th>IPP_JSTATE_HELD </th> <td class="description">Job is held for printing</td></tr>
6406 <tr><th>IPP_JSTATE_PENDING </th> <td class="description">Job is waiting to be printed</td></tr>
6407 <tr><th>IPP_JSTATE_PROCESSING </th> <td class="description">Job is currently printing</td></tr>
6408 <tr><th>IPP_JSTATE_STOPPED </th> <td class="description">Job has been stopped</td></tr>
6409</tbody></table>
798d6e29
MS
6410 <h3 class="enumeration"><a id="ipp_op_e">ipp_op_e</a></h3>
6411 <p class="description">IPP operations</p>
6412 <h4 class="constants">Constants</h4>
98d88c8d 6413 <table class="list"><tbody>
4f63d6cd 6414 <tr><th>IPP_OP_ALLOCATE_PRINTER_RESOURCES </th> <td class="description">Allocate-Printer-Resources: Use resources for a printer.</td></tr>
98d88c8d
MS
6415 <tr><th>IPP_OP_CANCEL_CURRENT_JOB </th> <td class="description">Cancel-Current-Job: Cancel the current job</td></tr>
6416 <tr><th>IPP_OP_CANCEL_JOB </th> <td class="description">Cancel-Job: Cancel a job</td></tr>
6417 <tr><th>IPP_OP_CANCEL_JOBS </th> <td class="description">Cancel-Jobs: Cancel all jobs (administrative)</td></tr>
6418 <tr><th>IPP_OP_CANCEL_MY_JOBS </th> <td class="description">Cancel-My-Jobs: Cancel a user's jobs</td></tr>
4f63d6cd 6419 <tr><th>IPP_OP_CANCEL_RESOURCE </th> <td class="description">Cancel-Resource: Uninstall a resource.</td></tr>
98d88c8d
MS
6420 <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>
6421 <tr><th>IPP_OP_CLOSE_JOB </th> <td class="description">Close-Job: Close a job and start printing</td></tr>
6422 <tr><th>IPP_OP_CREATE_JOB </th> <td class="description">Create-Job: Create an empty print job</td></tr>
6423 <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 6424 <tr><th>IPP_OP_CREATE_PRINTER </th> <td class="description">Create-Printer: Create a new service.</td></tr>
98d88c8d 6425 <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
6426 <tr><th>IPP_OP_CREATE_RESOURCE </th> <td class="description">Create-Resource: Create a new (empty) resource.</td></tr>
6427 <tr><th>IPP_OP_CREATE_RESOURCE_SUBSCRIPTIONS </th> <td class="description">Create-Resource-Subscriptions: Create event subscriptions for a resource.</td></tr>
6428 <tr><th>IPP_OP_CREATE_SYSTEM_SUBSCRIPTIONS </th> <td class="description">Create-System-Subscriptions: Create event subscriptions for a system.</td></tr>
98d88c8d
MS
6429 <tr><th>IPP_OP_CUPS_ADD_MODIFY_CLASS </th> <td class="description">CUPS-Add-Modify-Class: Add or modify a class</td></tr>
6430 <tr><th>IPP_OP_CUPS_ADD_MODIFY_PRINTER </th> <td class="description">CUPS-Add-Modify-Printer: Add or modify a printer</td></tr>
6431 <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>
6432 <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>
6433 <tr><th>IPP_OP_CUPS_DELETE_CLASS </th> <td class="description">CUPS-Delete-Class: Delete a class</td></tr>
6434 <tr><th>IPP_OP_CUPS_DELETE_PRINTER </th> <td class="description">CUPS-Delete-Printer: Delete a printer</td></tr>
6435 <tr><th>IPP_OP_CUPS_GET_DEFAULT </th> <td class="description">CUPS-Get-Default: Get the default printer</td></tr>
6436 <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>
6437 <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>
6438 <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>
6439 <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>
6440 <tr><th>IPP_OP_CUPS_GET_PRINTERS </th> <td class="description">CUPS-Get-Printers: Get a list of printers and/or classes</td></tr>
6441 <tr><th>IPP_OP_CUPS_INVALID </th> <td class="description">Invalid operation name for <a href="#ippOpValue"><code>ippOpValue</code></a></td></tr>
6442 <tr><th>IPP_OP_CUPS_MOVE_JOB </th> <td class="description">CUPS-Move-Job: Move a job to a different printer</td></tr>
6443 <tr><th>IPP_OP_CUPS_SET_DEFAULT </th> <td class="description">CUPS-Set-Default: Set the default printer</td></tr>
4f63d6cd
MS
6444 <tr><th>IPP_OP_DEALLOCATE_PRINTER_RESOURCES </th> <td class="description">Deallocate-Printer-Resources: Stop using resources for a printer.</td></tr>
6445 <tr><th>IPP_OP_DELETE_PRINTER </th> <td class="description">Delete-Printer: Delete an existing service.</td></tr>
6446 <tr><th>IPP_OP_DISABLE_ALL_PRINTERS </th> <td class="description">Disable-All-Printers: Stop accepting new jobs on all services.</td></tr>
98d88c8d 6447 <tr><th>IPP_OP_DISABLE_PRINTER </th> <td class="description">Disable-Printer: Reject new jobs for a printer</td></tr>
4f63d6cd 6448 <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
6449 <tr><th>IPP_OP_ENABLE_PRINTER </th> <td class="description">Enable-Printer: Accept new jobs for a printer</td></tr>
6450 <tr><th>IPP_OP_GET_JOBS </th> <td class="description">Get-Jobs: Get a list of jobs</td></tr>
6451 <tr><th>IPP_OP_GET_JOB_ATTRIBUTES </th> <td class="description">Get-Job-Attribute: Get information about a job</td></tr>
6452 <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 6453 <tr><th>IPP_OP_GET_PRINTERS </th> <td class="description">Get-Printers: Get a list of services.</td></tr>
98d88c8d
MS
6454 <tr><th>IPP_OP_GET_PRINTER_ATTRIBUTES </th> <td class="description">Get-Printer-Attributes: Get information about a printer</td></tr>
6455 <tr><th>IPP_OP_GET_PRINTER_SUPPORTED_VALUES </th> <td class="description">Get-Printer-Supported-Values: Get supported values</td></tr>
6456 <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>
6457 <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
6458 <tr><th>IPP_OP_GET_SYSTEM_ATTRIBUTES </th> <td class="description">Get-System-Attributes: Get system object attributes.</td></tr>
6459 <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
6460 <tr><th>IPP_OP_HOLD_JOB </th> <td class="description">Hold-Job: Hold a job for printing</td></tr>
6461 <tr><th>IPP_OP_HOLD_NEW_JOBS </th> <td class="description">Hold-New-Jobs: Hold new jobs</td></tr>
6462 <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
6463 <tr><th>IPP_OP_INSTALL_RESOURCE </th> <td class="description">Install-Resource: Install a resource.</td></tr>
6464 <tr><th>IPP_OP_PAUSE_ALL_PRINTERS </th> <td class="description">Pause-All-Printers: Stop all services immediately.</td></tr>
6465 <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
6466 <tr><th>IPP_OP_PAUSE_PRINTER </th> <td class="description">Pause-Printer: Stop a printer</td></tr>
6467 <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>
6468 <tr><th>IPP_OP_PRINT_JOB </th> <td class="description">Print-Job: Print a single file</td></tr>
6469 <tr><th>IPP_OP_PROMOTE_JOB </th> <td class="description">Promote-Job: Promote a job to print sooner</td></tr>
4f63d6cd 6470 <tr><th>IPP_OP_REGISTER_OUTPUT_DEVICE </th> <td class="description">Register-Output-Device: Register a remote service.</td></tr>
98d88c8d
MS
6471 <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>
6472 <tr><th>IPP_OP_RELEASE_JOB </th> <td class="description">Release-Job: Release a job for printing</td></tr>
6473 <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>
6474 <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
6475 <tr><th>IPP_OP_RESTART_SYSTEM </th> <td class="description">Restart-System: Restart all services.</td></tr>
6476 <tr><th>IPP_OP_RESUME_ALL_PRINTERS </th> <td class="description">Resume-All-Printers: Start job processing on all services.</td></tr>
98d88c8d
MS
6477 <tr><th>IPP_OP_RESUME_JOB </th> <td class="description">Resume-Job: Resume the current job</td></tr>
6478 <tr><th>IPP_OP_RESUME_PRINTER </th> <td class="description">Resume-Printer: Start a printer</td></tr>
6479 <tr><th>IPP_OP_SCHEDULE_JOB_AFTER </th> <td class="description">Schedule-Job-After: Schedule a job to print after another</td></tr>
6480 <tr><th>IPP_OP_SEND_DOCUMENT </th> <td class="description">Send-Document: Add a file to a job</td></tr>
4f63d6cd 6481 <tr><th>IPP_OP_SEND_RESOURCE_DATA </th> <td class="description">Send-Resource-Data: Upload the data for a resource.</td></tr>
98d88c8d
MS
6482 <tr><th>IPP_OP_SET_JOB_ATTRIBUTES </th> <td class="description">Set-Job-Attributes: Set job values</td></tr>
6483 <tr><th>IPP_OP_SET_PRINTER_ATTRIBUTES </th> <td class="description">Set-Printer-Attributes: Set printer values</td></tr>
4f63d6cd
MS
6484 <tr><th>IPP_OP_SET_RESOURCE_ATTRIBUTES </th> <td class="description">Set-Resource-Attributes: Set resource object attributes.</td></tr>
6485 <tr><th>IPP_OP_SET_SYSTEM_ATTRIBUTES </th> <td class="description">Set-System-Attributes: Set system object attributes.</td></tr>
6486 <tr><th>IPP_OP_SHUTDOWN_ALL_PRINTERS </th> <td class="description">Shutdown-All-Printers: Shutdown all services.</td></tr>
6487 <tr><th>IPP_OP_SHUTDOWN_ONE_PRINTER </th> <td class="description">Shutdown-One-Printer: Shutdown a service.</td></tr>
6488 <tr><th>IPP_OP_STARTUP_ALL_PRINTERS </th> <td class="description">Startup-All-Printers: Startup all services.</td></tr>
6489 <tr><th>IPP_OP_STARTUP_ONE_PRINTER </th> <td class="description">Startup-One-Printer: Start a service.</td></tr>
98d88c8d
MS
6490 <tr><th>IPP_OP_SUSPEND_CURRENT_JOB </th> <td class="description">Suspend-Current-Job: Suspend the current job</td></tr>
6491 <tr><th>IPP_OP_VALIDATE_JOB </th> <td class="description">Validate-Job: Validate job values prior to submission</td></tr>
6492</tbody></table>
798d6e29
MS
6493 <h3 class="enumeration"><a id="ipp_orient_e">ipp_orient_e</a></h3>
6494 <p class="description">Orientation values</p>
6495 <h4 class="constants">Constants</h4>
98d88c8d
MS
6496 <table class="list"><tbody>
6497 <tr><th>IPP_ORIENT_LANDSCAPE </th> <td class="description">90 degrees counter-clockwise</td></tr>
6498 <tr><th>IPP_ORIENT_NONE </th> <td class="description">No rotation</td></tr>
6499 <tr><th>IPP_ORIENT_PORTRAIT </th> <td class="description">No rotation</td></tr>
6500 <tr><th>IPP_ORIENT_REVERSE_LANDSCAPE </th> <td class="description">90 degrees clockwise</td></tr>
6501 <tr><th>IPP_ORIENT_REVERSE_PORTRAIT </th> <td class="description">180 degrees</td></tr>
6502</tbody></table>
798d6e29 6503 <h3 class="enumeration"><a id="ipp_pstate_e">ipp_pstate_e</a></h3>
65bebeac 6504 <p class="description">Printer state values</p>
798d6e29 6505 <h4 class="constants">Constants</h4>
98d88c8d
MS
6506 <table class="list"><tbody>
6507 <tr><th>IPP_PSTATE_IDLE </th> <td class="description">Printer is idle</td></tr>
6508 <tr><th>IPP_PSTATE_PROCESSING </th> <td class="description">Printer is working</td></tr>
6509 <tr><th>IPP_PSTATE_STOPPED </th> <td class="description">Printer is stopped</td></tr>
6510</tbody></table>
798d6e29 6511 <h3 class="enumeration"><a id="ipp_quality_e">ipp_quality_e</a></h3>
65bebeac 6512 <p class="description">Print quality values</p>
798d6e29 6513 <h4 class="constants">Constants</h4>
98d88c8d
MS
6514 <table class="list"><tbody>
6515 <tr><th>IPP_QUALITY_DRAFT </th> <td class="description">Draft quality</td></tr>
6516 <tr><th>IPP_QUALITY_HIGH </th> <td class="description">High quality</td></tr>
6517 <tr><th>IPP_QUALITY_NORMAL </th> <td class="description">Normal quality</td></tr>
6518</tbody></table>
798d6e29
MS
6519 <h3 class="enumeration"><a id="ipp_res_e">ipp_res_e</a></h3>
6520 <p class="description">Resolution units</p>
6521 <h4 class="constants">Constants</h4>
98d88c8d
MS
6522 <table class="list"><tbody>
6523 <tr><th>IPP_RES_PER_CM </th> <td class="description">Pixels per centimeter</td></tr>
6524 <tr><th>IPP_RES_PER_INCH </th> <td class="description">Pixels per inch</td></tr>
06a5a4d3
MS
6525</tbody></table>
6526 <h3 class="enumeration"><a id="ipp_rstate_e">ipp_rstate_e</a></h3>
6527 <p class="description">resource-state values</p>
6528 <h4 class="constants">Constants</h4>
6529 <table class="list"><tbody>
6530 <tr><th>IPP_RSTATE_ABORTED </th> <td class="description">Resource has been aborted and is pending deletion.</td></tr>
6531 <tr><th>IPP_RSTATE_AVAILABLE </th> <td class="description">Resource is available for installation.</td></tr>
6532 <tr><th>IPP_RSTATE_CANCELED </th> <td class="description">Resource has been canceled and is pending deletion.</td></tr>
6533 <tr><th>IPP_RSTATE_INSTALLED </th> <td class="description">Resource is installed.</td></tr>
6534 <tr><th>IPP_RSTATE_PENDING </th> <td class="description">Resource is created but has no data yet.</td></tr>
6535</tbody></table>
6536 <h3 class="enumeration"><a id="ipp_sstate_e">ipp_sstate_e</a></h3>
6537 <p class="description">system-state values</p>
6538 <h4 class="constants">Constants</h4>
6539 <table class="list"><tbody>
6540 <tr><th>IPP_SSTATE_IDLE </th> <td class="description">At least one printer is idle and none are processing a job.</td></tr>
6541 <tr><th>IPP_SSTATE_PROCESSING </th> <td class="description">At least one printer is processing a job.</td></tr>
6542 <tr><th>IPP_SSTATE_STOPPED </th> <td class="description">All printers are stopped.</td></tr>
98d88c8d 6543</tbody></table>
798d6e29 6544 <h3 class="enumeration"><a id="ipp_state_e">ipp_state_e</a></h3>
65bebeac 6545 <p class="description">ipp_t state values</p>
798d6e29 6546 <h4 class="constants">Constants</h4>
98d88c8d
MS
6547 <table class="list"><tbody>
6548 <tr><th>IPP_STATE_ATTRIBUTE </th> <td class="description">One or more attributes need to be sent/received</td></tr>
6549 <tr><th>IPP_STATE_DATA </th> <td class="description">IPP request data needs to be sent/received</td></tr>
6550 <tr><th>IPP_STATE_ERROR </th> <td class="description">An error occurred</td></tr>
6551 <tr><th>IPP_STATE_HEADER </th> <td class="description">The request header needs to be sent/received</td></tr>
6552 <tr><th>IPP_STATE_IDLE </th> <td class="description">Nothing is happening/request completed</td></tr>
6553</tbody></table>
798d6e29 6554 <h3 class="enumeration"><a id="ipp_status_e">ipp_status_e</a></h3>
65bebeac 6555 <p class="description">IPP status code values</p>
798d6e29 6556 <h4 class="constants">Constants</h4>
98d88c8d
MS
6557 <table class="list"><tbody>
6558 <tr><th>IPP_STATUS_CUPS_INVALID </th> <td class="description">Invalid status name for <a href="#ippErrorValue"><code>ippErrorValue</code></a></td></tr>
6559 <tr><th>IPP_STATUS_ERROR_ACCOUNT_AUTHORIZATION_FAILED </th> <td class="description">client-error-account-authorization-failed</td></tr>
6560 <tr><th>IPP_STATUS_ERROR_ACCOUNT_CLOSED </th> <td class="description">client-error-account-closed</td></tr>
6561 <tr><th>IPP_STATUS_ERROR_ACCOUNT_INFO_NEEDED </th> <td class="description">client-error-account-info-needed</td></tr>
6562 <tr><th>IPP_STATUS_ERROR_ACCOUNT_LIMIT_REACHED </th> <td class="description">client-error-account-limit-reached</td></tr>
6563 <tr><th>IPP_STATUS_ERROR_ATTRIBUTES_NOT_SETTABLE </th> <td class="description">client-error-attributes-not-settable</td></tr>
6564 <tr><th>IPP_STATUS_ERROR_ATTRIBUTES_OR_VALUES </th> <td class="description">client-error-attributes-or-values-not-supported</td></tr>
6565 <tr><th>IPP_STATUS_ERROR_BAD_REQUEST </th> <td class="description">client-error-bad-request</td></tr>
6566 <tr><th>IPP_STATUS_ERROR_BUSY </th> <td class="description">server-error-busy</td></tr>
6567 <tr><th>IPP_STATUS_ERROR_CHARSET </th> <td class="description">client-error-charset-not-supported</td></tr>
6568 <tr><th>IPP_STATUS_ERROR_COMPRESSION_ERROR </th> <td class="description">client-error-compression-error</td></tr>
6569 <tr><th>IPP_STATUS_ERROR_COMPRESSION_NOT_SUPPORTED </th> <td class="description">client-error-compression-not-supported</td></tr>
6570 <tr><th>IPP_STATUS_ERROR_CONFLICTING </th> <td class="description">client-error-conflicting-attributes</td></tr>
6571 <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>
6572 <tr><th>IPP_STATUS_ERROR_CUPS_ACCOUNT_CLOSED </th> <td class="description">cups-error-account-closed @deprecate@</td></tr>
6573 <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>
6574 <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>
6575 <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>
6576 <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>
6577 <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>
6578 <tr><th>IPP_STATUS_ERROR_DEVICE </th> <td class="description">server-error-device-error</td></tr>
6579 <tr><th>IPP_STATUS_ERROR_DOCUMENT_ACCESS </th> <td class="description">client-error-document-access-error</td></tr>
6580 <tr><th>IPP_STATUS_ERROR_DOCUMENT_FORMAT_ERROR </th> <td class="description">client-error-document-format-error</td></tr>
6581 <tr><th>IPP_STATUS_ERROR_DOCUMENT_FORMAT_NOT_SUPPORTED </th> <td class="description">client-error-document-format-not-supported</td></tr>
6582 <tr><th>IPP_STATUS_ERROR_DOCUMENT_PASSWORD </th> <td class="description">client-error-document-password-error</td></tr>
6583 <tr><th>IPP_STATUS_ERROR_DOCUMENT_PERMISSION </th> <td class="description">client-error-document-permission-error</td></tr>
6584 <tr><th>IPP_STATUS_ERROR_DOCUMENT_SECURITY </th> <td class="description">client-error-document-security-error</td></tr>
6585 <tr><th>IPP_STATUS_ERROR_DOCUMENT_UNPRINTABLE </th> <td class="description">client-error-document-unprintable-error</td></tr>
6586 <tr><th>IPP_STATUS_ERROR_FORBIDDEN </th> <td class="description">client-error-forbidden</td></tr>
6587 <tr><th>IPP_STATUS_ERROR_GONE </th> <td class="description">client-error-gone</td></tr>
6588 <tr><th>IPP_STATUS_ERROR_IGNORED_ALL_SUBSCRIPTIONS </th> <td class="description">client-error-ignored-all-subscriptions</td></tr>
6589 <tr><th>IPP_STATUS_ERROR_INTERNAL </th> <td class="description">server-error-internal-error</td></tr>
6590 <tr><th>IPP_STATUS_ERROR_JOB_CANCELED </th> <td class="description">server-error-job-canceled</td></tr>
6591 <tr><th>IPP_STATUS_ERROR_MULTIPLE_JOBS_NOT_SUPPORTED </th> <td class="description">server-error-multiple-document-jobs-not-supported</td></tr>
6592 <tr><th>IPP_STATUS_ERROR_NOT_ACCEPTING_JOBS </th> <td class="description">server-error-not-accepting-jobs</td></tr>
6593 <tr><th>IPP_STATUS_ERROR_NOT_AUTHENTICATED </th> <td class="description">client-error-not-authenticated</td></tr>
6594 <tr><th>IPP_STATUS_ERROR_NOT_AUTHORIZED </th> <td class="description">client-error-not-authorized</td></tr>
6595 <tr><th>IPP_STATUS_ERROR_NOT_FETCHABLE </th> <td class="description">client-error-not-fetchable</td></tr>
6596 <tr><th>IPP_STATUS_ERROR_NOT_FOUND </th> <td class="description">client-error-not-found</td></tr>
6597 <tr><th>IPP_STATUS_ERROR_NOT_POSSIBLE </th> <td class="description">client-error-not-possible</td></tr>
6598 <tr><th>IPP_STATUS_ERROR_OPERATION_NOT_SUPPORTED </th> <td class="description">server-error-operation-not-supported</td></tr>
6599 <tr><th>IPP_STATUS_ERROR_PRINTER_IS_DEACTIVATED </th> <td class="description">server-error-printer-is-deactivated</td></tr>
6600 <tr><th>IPP_STATUS_ERROR_REQUEST_ENTITY </th> <td class="description">client-error-request-entity-too-large</td></tr>
6601 <tr><th>IPP_STATUS_ERROR_REQUEST_VALUE </th> <td class="description">client-error-request-value-too-long</td></tr>
6602 <tr><th>IPP_STATUS_ERROR_SERVICE_UNAVAILABLE </th> <td class="description">server-error-service-unavailable</td></tr>
6603 <tr><th>IPP_STATUS_ERROR_TEMPORARY </th> <td class="description">server-error-temporary-error</td></tr>
6604 <tr><th>IPP_STATUS_ERROR_TIMEOUT </th> <td class="description">client-error-timeout</td></tr>
6605 <tr><th>IPP_STATUS_ERROR_TOO_MANY_DOCUMENTS </th> <td class="description">server-error-too-many-documents</td></tr>
6606 <tr><th>IPP_STATUS_ERROR_TOO_MANY_JOBS </th> <td class="description">server-error-too-many-jobs</td></tr>
6607 <tr><th>IPP_STATUS_ERROR_TOO_MANY_SUBSCRIPTIONS </th> <td class="description">client-error-too-many-subscriptions</td></tr>
6608 <tr><th>IPP_STATUS_ERROR_URI_SCHEME </th> <td class="description">client-error-uri-scheme-not-supported</td></tr>
6609 <tr><th>IPP_STATUS_ERROR_VERSION_NOT_SUPPORTED </th> <td class="description">server-error-version-not-supported</td></tr>
6610 <tr><th>IPP_STATUS_OK </th> <td class="description">successful-ok</td></tr>
6611 <tr><th>IPP_STATUS_OK_CONFLICTING </th> <td class="description">successful-ok-conflicting-attributes</td></tr>
6612 <tr><th>IPP_STATUS_OK_EVENTS_COMPLETE </th> <td class="description">successful-ok-events-complete</td></tr>
6613 <tr><th>IPP_STATUS_OK_IGNORED_OR_SUBSTITUTED </th> <td class="description">successful-ok-ignored-or-substituted-attributes</td></tr>
6614 <tr><th>IPP_STATUS_OK_IGNORED_SUBSCRIPTIONS </th> <td class="description">successful-ok-ignored-subscriptions</td></tr>
6615 <tr><th>IPP_STATUS_OK_TOO_MANY_EVENTS </th> <td class="description">successful-ok-too-many-events</td></tr>
6616</tbody></table>
798d6e29 6617 <h3 class="enumeration"><a id="ipp_tag_e">ipp_tag_e</a></h3>
65bebeac 6618 <p class="description">Value and group tag values for attributes</p>
798d6e29 6619 <h4 class="constants">Constants</h4>
98d88c8d
MS
6620 <table class="list"><tbody>
6621 <tr><th>IPP_TAG_ADMINDEFINE </th> <td class="description">Admin-defined value</td></tr>
6622 <tr><th>IPP_TAG_BOOLEAN </th> <td class="description">Boolean value</td></tr>
6623 <tr><th>IPP_TAG_CHARSET </th> <td class="description">Character set value</td></tr>
6624 <tr><th>IPP_TAG_CUPS_INVALID </th> <td class="description">Invalid tag name for <a href="#ippTagValue"><code>ippTagValue</code></a></td></tr>
6625 <tr><th>IPP_TAG_DATE </th> <td class="description">Date/time value</td></tr>
6626 <tr><th>IPP_TAG_DEFAULT </th> <td class="description">Default value</td></tr>
6627 <tr><th>IPP_TAG_DELETEATTR </th> <td class="description">Delete-attribute value</td></tr>
4f63d6cd 6628 <tr><th>IPP_TAG_DOCUMENT </th> <td class="description">Document group</td></tr>
98d88c8d
MS
6629 <tr><th>IPP_TAG_END </th> <td class="description">End-of-attributes</td></tr>
6630 <tr><th>IPP_TAG_ENUM </th> <td class="description">Enumeration value</td></tr>
6631 <tr><th>IPP_TAG_EVENT_NOTIFICATION </th> <td class="description">Event group</td></tr>
6632 <tr><th>IPP_TAG_INTEGER </th> <td class="description">Integer value</td></tr>
6633 <tr><th>IPP_TAG_JOB </th> <td class="description">Job group</td></tr>
6634 <tr><th>IPP_TAG_KEYWORD </th> <td class="description">Keyword value</td></tr>
6635 <tr><th>IPP_TAG_LANGUAGE </th> <td class="description">Language value</td></tr>
6636 <tr><th>IPP_TAG_MIMETYPE </th> <td class="description">MIME media type value</td></tr>
6637 <tr><th>IPP_TAG_NAME </th> <td class="description">Name value</td></tr>
6638 <tr><th>IPP_TAG_NAMELANG </th> <td class="description">Name-with-language value</td></tr>
6639 <tr><th>IPP_TAG_NOTSETTABLE </th> <td class="description">Not-settable value</td></tr>
6640 <tr><th>IPP_TAG_NOVALUE </th> <td class="description">No-value value</td></tr>
6641 <tr><th>IPP_TAG_OPERATION </th> <td class="description">Operation group</td></tr>
6642 <tr><th>IPP_TAG_PRINTER </th> <td class="description">Printer group</td></tr>
6643 <tr><th>IPP_TAG_RANGE </th> <td class="description">Range value</td></tr>
6644 <tr><th>IPP_TAG_RESOLUTION </th> <td class="description">Resolution value</td></tr>
4f63d6cd 6645 <tr><th>IPP_TAG_RESOURCE </th> <td class="description">Resource group</td></tr>
98d88c8d
MS
6646 <tr><th>IPP_TAG_STRING </th> <td class="description">Octet string value</td></tr>
6647 <tr><th>IPP_TAG_SUBSCRIPTION </th> <td class="description">Subscription group</td></tr>
4f63d6cd 6648 <tr><th>IPP_TAG_SYSTEM </th> <td class="description">System group</td></tr>
98d88c8d
MS
6649 <tr><th>IPP_TAG_TEXT </th> <td class="description">Text value</td></tr>
6650 <tr><th>IPP_TAG_TEXTLANG </th> <td class="description">Text-with-language value</td></tr>
6651 <tr><th>IPP_TAG_UNKNOWN </th> <td class="description">Unknown value</td></tr>
6652 <tr><th>IPP_TAG_UNSUPPORTED_GROUP </th> <td class="description">Unsupported attributes group</td></tr>
6653 <tr><th>IPP_TAG_UNSUPPORTED_VALUE </th> <td class="description">Unsupported value</td></tr>
6654 <tr><th>IPP_TAG_URI </th> <td class="description">URI value</td></tr>
6655 <tr><th>IPP_TAG_URISCHEME </th> <td class="description">URI scheme value</td></tr>
6656 <tr><th>IPP_TAG_ZERO </th> <td class="description">Zero tag - used for separators</td></tr>
6657</tbody></table>
798d6e29
MS
6658 </div>
6659 </body>
6660</html>