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ecdc0628 | 1 | /* |
f7deaa1a | 2 | * "$Id: request.c 6253 2007-02-10 18:48:40Z mike $" |
ecdc0628 | 3 | * |
4 | * IPP utilities for the Common UNIX Printing System (CUPS). | |
5 | * | |
b86bc4cf | 6 | * Copyright 1997-2007 by Easy Software Products. |
ecdc0628 | 7 | * |
8 | * These coded instructions, statements, and computer programs are the | |
9 | * property of Easy Software Products and are protected by Federal | |
10 | * copyright law. Distribution and use rights are outlined in the file | |
11 | * "LICENSE.txt" which should have been included with this file. If this | |
12 | * file is missing or damaged please contact Easy Software Products | |
13 | * at: | |
14 | * | |
15 | * Attn: CUPS Licensing Information | |
16 | * Easy Software Products | |
17 | * 44141 Airport View Drive, Suite 204 | |
18 | * Hollywood, Maryland 20636 USA | |
19 | * | |
20 | * Voice: (301) 373-9600 | |
21 | * EMail: cups-info@cups.org | |
22 | * WWW: http://www.cups.org | |
23 | * | |
24 | * This file is subject to the Apple OS-Developed Software exception. | |
25 | * | |
26 | * Contents: | |
27 | * | |
28 | * cupsDoFileRequest() - Do an IPP request with a file. | |
29 | * cupsDoRequest() - Do an IPP request. | |
30 | * _cupsSetError() - Set the last IPP status code and status-message. | |
31 | */ | |
32 | ||
33 | /* | |
34 | * Include necessary headers... | |
35 | */ | |
36 | ||
37 | #include "globals.h" | |
38 | #include "debug.h" | |
39 | #include <stdlib.h> | |
40 | #include <errno.h> | |
41 | #include <fcntl.h> | |
42 | #include <sys/stat.h> | |
43 | #if defined(WIN32) || defined(__EMX__) | |
44 | # include <io.h> | |
45 | #else | |
46 | # include <unistd.h> | |
47 | #endif /* WIN32 || __EMX__ */ | |
48 | ||
49 | ||
50 | /* | |
51 | * 'cupsDoFileRequest()' - Do an IPP request with a file. | |
52 | * | |
53 | * This function sends the IPP request to the specified server, retrying | |
54 | * and authenticating as necessary. The request is freed with ippDelete() | |
55 | * after receiving a valid IPP response. | |
56 | */ | |
57 | ||
58 | ipp_t * /* O - Response data */ | |
59 | cupsDoFileRequest(http_t *http, /* I - HTTP connection to server */ | |
60 | ipp_t *request, /* I - IPP request */ | |
61 | const char *resource, /* I - HTTP resource for POST */ | |
62 | const char *filename) /* I - File to send or NULL for none */ | |
63 | { | |
64 | ipp_t *response; /* IPP response data */ | |
65 | size_t length; /* Content-Length value */ | |
66 | http_status_t status; /* Status of HTTP request */ | |
d6ae789d | 67 | int got_status; /* Did we get the status? */ |
b423cd4c | 68 | ipp_state_t state; /* State of IPP processing */ |
ecdc0628 | 69 | FILE *file; /* File to send */ |
70 | struct stat fileinfo; /* File information */ | |
71 | int bytes; /* Number of bytes read/written */ | |
a74454a7 | 72 | char buffer[32768]; /* Output buffer */ |
f301802f | 73 | http_status_t expect; /* Expect: header to use */ |
f7deaa1a | 74 | #ifdef HAVE_AUTHORIZATION_H |
75 | _cups_globals_t *cg = _cupsGlobals(); /* Global data */ | |
76 | #endif /* HAVE_AUTHORIZATION_H */ | |
ecdc0628 | 77 | |
78 | ||
79 | DEBUG_printf(("cupsDoFileRequest(%p, %p, \'%s\', \'%s\')\n", | |
80 | http, request, resource ? resource : "(null)", | |
81 | filename ? filename : "(null)")); | |
82 | ||
83 | if (http == NULL || request == NULL || resource == NULL) | |
84 | { | |
85 | if (request != NULL) | |
86 | ippDelete(request); | |
87 | ||
88 | _cupsSetError(IPP_INTERNAL_ERROR, NULL); | |
89 | ||
90 | return (NULL); | |
91 | } | |
92 | ||
93 | /* | |
94 | * See if we have a file to send... | |
95 | */ | |
96 | ||
97 | if (filename != NULL) | |
98 | { | |
99 | if (stat(filename, &fileinfo)) | |
100 | { | |
101 | /* | |
102 | * Can't get file information! | |
103 | */ | |
104 | ||
105 | _cupsSetError(errno == ENOENT ? IPP_NOT_FOUND : IPP_NOT_AUTHORIZED, | |
106 | strerror(errno)); | |
107 | ||
108 | ippDelete(request); | |
109 | ||
110 | return (NULL); | |
111 | } | |
112 | ||
113 | #ifdef WIN32 | |
114 | if (fileinfo.st_mode & _S_IFDIR) | |
115 | #else | |
116 | if (S_ISDIR(fileinfo.st_mode)) | |
117 | #endif /* WIN32 */ | |
118 | { | |
119 | /* | |
120 | * Can't send a directory... | |
121 | */ | |
122 | ||
123 | ippDelete(request); | |
124 | ||
89d46774 | 125 | _cupsSetError(IPP_NOT_POSSIBLE, strerror(EISDIR)); |
ecdc0628 | 126 | |
127 | return (NULL); | |
128 | } | |
129 | ||
130 | if ((file = fopen(filename, "rb")) == NULL) | |
131 | { | |
132 | /* | |
133 | * Can't open file! | |
134 | */ | |
135 | ||
136 | _cupsSetError(errno == ENOENT ? IPP_NOT_FOUND : IPP_NOT_AUTHORIZED, | |
137 | strerror(errno)); | |
138 | ||
139 | ippDelete(request); | |
140 | ||
141 | return (NULL); | |
142 | } | |
143 | } | |
144 | else | |
145 | file = NULL; | |
146 | ||
147 | /* | |
148 | * Loop until we can send the request without authorization problems. | |
149 | */ | |
150 | ||
151 | response = NULL; | |
152 | status = HTTP_ERROR; | |
f301802f | 153 | expect = HTTP_CONTINUE; |
ecdc0628 | 154 | |
155 | while (response == NULL) | |
156 | { | |
157 | DEBUG_puts("cupsDoFileRequest: setup..."); | |
158 | ||
159 | /* | |
160 | * Setup the HTTP variables needed... | |
161 | */ | |
162 | ||
163 | length = ippLength(request); | |
164 | if (filename) | |
165 | length += fileinfo.st_size; | |
166 | ||
167 | httpClearFields(http); | |
168 | httpSetLength(http, length); | |
169 | httpSetField(http, HTTP_FIELD_CONTENT_TYPE, "application/ipp"); | |
170 | httpSetField(http, HTTP_FIELD_AUTHORIZATION, http->authstring); | |
f301802f | 171 | httpSetExpect(http, expect); |
ecdc0628 | 172 | |
173 | DEBUG_printf(("cupsDoFileRequest: authstring=\"%s\"\n", http->authstring)); | |
174 | ||
175 | /* | |
176 | * Try the request... | |
177 | */ | |
178 | ||
179 | DEBUG_puts("cupsDoFileRequest: post..."); | |
180 | ||
181 | if (httpPost(http, resource)) | |
182 | { | |
183 | if (httpReconnect(http)) | |
184 | { | |
185 | status = HTTP_ERROR; | |
186 | break; | |
187 | } | |
188 | else | |
189 | continue; | |
190 | } | |
191 | ||
192 | /* | |
d6ae789d | 193 | * Send the IPP data... |
ecdc0628 | 194 | */ |
195 | ||
d6ae789d | 196 | DEBUG_puts("cupsDoFileRequest: ipp write..."); |
b423cd4c | 197 | |
d6ae789d | 198 | request->state = IPP_IDLE; |
199 | status = HTTP_CONTINUE; | |
200 | got_status = 0; | |
201 | ||
202 | while ((state = ippWrite(http, request)) != IPP_DATA) | |
203 | if (state == IPP_ERROR) | |
204 | break; | |
205 | else if (httpCheck(http)) | |
206 | { | |
207 | got_status = 1; | |
208 | ||
209 | if ((status = httpUpdate(http)) != HTTP_CONTINUE) | |
210 | break; | |
211 | } | |
212 | ||
213 | if (!got_status) | |
b423cd4c | 214 | { |
215 | /* | |
d6ae789d | 216 | * Wait up to 1 second to get the 100-continue response... |
b423cd4c | 217 | */ |
ecdc0628 | 218 | |
d6ae789d | 219 | if (httpWait(http, 1000)) |
220 | status = httpUpdate(http); | |
221 | } | |
222 | else if (httpCheck(http)) | |
223 | status = httpUpdate(http); | |
ecdc0628 | 224 | |
d6ae789d | 225 | if (status == HTTP_CONTINUE && state == IPP_DATA && filename) |
226 | { | |
227 | DEBUG_puts("cupsDoFileRequest: file write..."); | |
b423cd4c | 228 | |
d6ae789d | 229 | /* |
230 | * Send the file... | |
231 | */ | |
232 | ||
233 | rewind(file); | |
234 | ||
235 | while ((bytes = (int)fread(buffer, 1, sizeof(buffer), file)) > 0) | |
236 | { | |
237 | if (httpCheck(http)) | |
b423cd4c | 238 | { |
239 | if ((status = httpUpdate(http)) != HTTP_CONTINUE) | |
240 | break; | |
241 | } | |
242 | ||
d6ae789d | 243 | if (httpWrite2(http, buffer, bytes) < bytes) |
244 | break; | |
ecdc0628 | 245 | } |
b423cd4c | 246 | } |
ecdc0628 | 247 | |
248 | /* | |
249 | * Get the server's return status... | |
250 | */ | |
251 | ||
252 | DEBUG_puts("cupsDoFileRequest: update..."); | |
253 | ||
254 | while (status == HTTP_CONTINUE) | |
255 | status = httpUpdate(http); | |
256 | ||
257 | DEBUG_printf(("cupsDoFileRequest: status = %d\n", status)); | |
258 | ||
259 | if (status == HTTP_UNAUTHORIZED) | |
260 | { | |
261 | DEBUG_puts("cupsDoFileRequest: unauthorized..."); | |
262 | ||
263 | /* | |
264 | * Flush any error message... | |
265 | */ | |
266 | ||
267 | httpFlush(http); | |
268 | ||
269 | /* | |
270 | * See if we can do authentication... | |
271 | */ | |
272 | ||
273 | if (cupsDoAuthentication(http, "POST", resource)) | |
274 | break; | |
275 | ||
276 | if (httpReconnect(http)) | |
277 | { | |
278 | status = HTTP_ERROR; | |
279 | break; | |
280 | } | |
281 | ||
282 | continue; | |
283 | } | |
284 | else if (status == HTTP_ERROR) | |
285 | { | |
89d46774 | 286 | DEBUG_printf(("cupsDoFileRequest: http->error=%d (%s)\n", http->error, |
287 | strerror(http->error))); | |
288 | ||
ecdc0628 | 289 | #ifdef WIN32 |
89d46774 | 290 | if (http->error != WSAENETDOWN && http->error != WSAENETUNREACH && |
b86bc4cf | 291 | http->error != WSAETIMEDOUT) |
ecdc0628 | 292 | #else |
89d46774 | 293 | if (http->error != ENETDOWN && http->error != ENETUNREACH && |
294 | http->error != ETIMEDOUT) | |
ecdc0628 | 295 | #endif /* WIN32 */ |
296 | continue; | |
297 | else | |
298 | break; | |
299 | } | |
300 | #ifdef HAVE_SSL | |
301 | else if (status == HTTP_UPGRADE_REQUIRED) | |
302 | { | |
303 | /* Flush any error message... */ | |
304 | httpFlush(http); | |
305 | ||
306 | /* Reconnect... */ | |
307 | if (httpReconnect(http)) | |
308 | { | |
309 | status = HTTP_ERROR; | |
310 | break; | |
311 | } | |
312 | ||
313 | /* Upgrade with encryption... */ | |
314 | httpEncryption(http, HTTP_ENCRYPT_REQUIRED); | |
315 | ||
316 | /* Try again, this time with encryption enabled... */ | |
317 | continue; | |
318 | } | |
319 | #endif /* HAVE_SSL */ | |
f301802f | 320 | else if (status == HTTP_EXPECTATION_FAILED) |
321 | { | |
322 | /* | |
323 | * Don't try using the Expect: header the next time around... | |
324 | */ | |
325 | ||
326 | expect = (http_status_t)0; | |
327 | } | |
ecdc0628 | 328 | else if (status != HTTP_OK) |
329 | { | |
330 | DEBUG_printf(("cupsDoFileRequest: error %d...\n", status)); | |
331 | ||
332 | /* | |
333 | * Flush any error message... | |
334 | */ | |
335 | ||
336 | httpFlush(http); | |
337 | break; | |
338 | } | |
339 | else | |
340 | { | |
341 | /* | |
342 | * Read the response... | |
343 | */ | |
344 | ||
345 | DEBUG_puts("cupsDoFileRequest: response..."); | |
346 | ||
347 | response = ippNew(); | |
348 | ||
89d46774 | 349 | while ((state = ippRead(http, response)) != IPP_DATA) |
350 | if (state == IPP_ERROR) | |
351 | { | |
352 | /* | |
353 | * Delete the response... | |
354 | */ | |
ecdc0628 | 355 | |
89d46774 | 356 | DEBUG_puts("IPP read error!"); |
357 | ippDelete(response); | |
358 | response = NULL; | |
ecdc0628 | 359 | |
89d46774 | 360 | _cupsSetError(IPP_SERVICE_UNAVAILABLE, strerror(errno)); |
ecdc0628 | 361 | |
89d46774 | 362 | break; |
363 | } | |
ecdc0628 | 364 | } |
365 | } | |
366 | ||
367 | /* | |
368 | * Close the file if needed... | |
369 | */ | |
370 | ||
371 | if (filename != NULL) | |
372 | fclose(file); | |
373 | ||
374 | /* | |
375 | * Flush any remaining data... | |
376 | */ | |
377 | ||
378 | httpFlush(http); | |
379 | ||
380 | /* | |
381 | * Delete the original request and return the response... | |
382 | */ | |
383 | ||
384 | ippDelete(request); | |
385 | ||
386 | if (response) | |
387 | { | |
388 | ipp_attribute_t *attr; /* status-message attribute */ | |
389 | ||
390 | ||
391 | attr = ippFindAttribute(response, "status-message", IPP_TAG_TEXT); | |
392 | ||
393 | _cupsSetError(response->request.status.status_code, | |
394 | attr ? attr->values[0].string.text : | |
395 | ippErrorString(response->request.status.status_code)); | |
396 | } | |
397 | else if (status != HTTP_OK) | |
398 | { | |
399 | switch (status) | |
400 | { | |
401 | case HTTP_NOT_FOUND : | |
402 | _cupsSetError(IPP_NOT_FOUND, httpStatus(status)); | |
403 | break; | |
404 | ||
405 | case HTTP_UNAUTHORIZED : | |
406 | _cupsSetError(IPP_NOT_AUTHORIZED, httpStatus(status)); | |
407 | break; | |
408 | ||
409 | case HTTP_FORBIDDEN : | |
410 | _cupsSetError(IPP_FORBIDDEN, httpStatus(status)); | |
411 | break; | |
412 | ||
413 | case HTTP_BAD_REQUEST : | |
414 | _cupsSetError(IPP_BAD_REQUEST, httpStatus(status)); | |
415 | break; | |
416 | ||
417 | case HTTP_REQUEST_TOO_LARGE : | |
418 | _cupsSetError(IPP_REQUEST_VALUE, httpStatus(status)); | |
419 | break; | |
420 | ||
421 | case HTTP_NOT_IMPLEMENTED : | |
422 | _cupsSetError(IPP_OPERATION_NOT_SUPPORTED, httpStatus(status)); | |
423 | break; | |
424 | ||
425 | case HTTP_NOT_SUPPORTED : | |
426 | _cupsSetError(IPP_VERSION_NOT_SUPPORTED, httpStatus(status)); | |
427 | break; | |
428 | ||
429 | default : | |
430 | DEBUG_printf(("HTTP error %d mapped to IPP_SERVICE_UNAVAILABLE!\n", | |
431 | status)); | |
432 | _cupsSetError(IPP_SERVICE_UNAVAILABLE, httpStatus(status)); | |
433 | break; | |
434 | } | |
435 | } | |
436 | ||
f7deaa1a | 437 | #ifdef HAVE_AUTHORIZATION_H |
438 | /* | |
439 | * Delete any authorization reference created for this request... | |
440 | */ | |
441 | ||
442 | if (cg->auth_ref) | |
443 | { | |
444 | AuthorizationFree(cg->auth_ref, kAuthorizationFlagDefaults); | |
445 | cg->auth_ref = NULL; | |
446 | } | |
447 | #endif /* HAVE_AUTHORIZATION_H */ | |
448 | ||
ecdc0628 | 449 | return (response); |
450 | } | |
451 | ||
452 | ||
453 | /* | |
454 | * 'cupsDoRequest()' - Do an IPP request. | |
455 | * | |
456 | * This function sends the IPP request to the specified server, retrying | |
457 | * and authenticating as necessary. The request is freed with ippDelete() | |
458 | * after receiving a valid IPP response. | |
459 | */ | |
460 | ||
461 | ipp_t * /* O - Response data */ | |
462 | cupsDoRequest(http_t *http, /* I - HTTP connection to server */ | |
463 | ipp_t *request, /* I - IPP request */ | |
464 | const char *resource) /* I - HTTP resource for POST */ | |
465 | { | |
466 | return (cupsDoFileRequest(http, request, resource, NULL)); | |
467 | } | |
468 | ||
469 | ||
470 | /* | |
471 | * '_cupsSetError()' - Set the last IPP status code and status-message. | |
472 | */ | |
473 | ||
474 | void | |
475 | _cupsSetError(ipp_status_t status, /* I - IPP status code */ | |
476 | const char *message) /* I - status-message value */ | |
477 | { | |
478 | _cups_globals_t *cg; /* Global data */ | |
479 | ||
480 | ||
481 | cg = _cupsGlobals(); | |
482 | cg->last_error = status; | |
483 | ||
484 | if (cg->last_status_message) | |
485 | { | |
486 | free(cg->last_status_message); | |
487 | ||
488 | cg->last_status_message = NULL; | |
489 | } | |
490 | ||
491 | if (message) | |
492 | cg->last_status_message = strdup(message); | |
493 | } | |
494 | ||
495 | ||
496 | /* | |
f7deaa1a | 497 | * End of "$Id: request.c 6253 2007-02-10 18:48:40Z mike $". |
ecdc0628 | 498 | */ |