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ecdc0628 | 1 | /* |
c0e1af83 | 2 | * "$Id: request.c 6416 2007-03-30 18:30:33Z 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 | ||
7594b224 | 147 | #ifdef HAVE_SSL |
148 | /* | |
149 | * See if we have an auth-info attribute and are communicating over | |
150 | * a non-local link. If so, encrypt the link so that we can pass | |
151 | * the authentication information securely... | |
152 | */ | |
153 | ||
154 | if (ippFindAttribute(request, "auth-info", IPP_TAG_TEXT) && | |
155 | !httpAddrLocalhost(http->hostaddr) && !http->tls && | |
156 | httpEncryption(http, HTTP_ENCRYPT_REQUIRED)) | |
157 | return (NULL); | |
158 | #endif /* HAVE_SSL */ | |
159 | ||
ecdc0628 | 160 | /* |
161 | * Loop until we can send the request without authorization problems. | |
162 | */ | |
163 | ||
164 | response = NULL; | |
165 | status = HTTP_ERROR; | |
f301802f | 166 | expect = HTTP_CONTINUE; |
ecdc0628 | 167 | |
168 | while (response == NULL) | |
169 | { | |
170 | DEBUG_puts("cupsDoFileRequest: setup..."); | |
171 | ||
172 | /* | |
173 | * Setup the HTTP variables needed... | |
174 | */ | |
175 | ||
176 | length = ippLength(request); | |
177 | if (filename) | |
178 | length += fileinfo.st_size; | |
179 | ||
180 | httpClearFields(http); | |
181 | httpSetLength(http, length); | |
182 | httpSetField(http, HTTP_FIELD_CONTENT_TYPE, "application/ipp"); | |
183 | httpSetField(http, HTTP_FIELD_AUTHORIZATION, http->authstring); | |
f301802f | 184 | httpSetExpect(http, expect); |
ecdc0628 | 185 | |
186 | DEBUG_printf(("cupsDoFileRequest: authstring=\"%s\"\n", http->authstring)); | |
187 | ||
188 | /* | |
189 | * Try the request... | |
190 | */ | |
191 | ||
192 | DEBUG_puts("cupsDoFileRequest: post..."); | |
193 | ||
194 | if (httpPost(http, resource)) | |
195 | { | |
196 | if (httpReconnect(http)) | |
197 | { | |
198 | status = HTTP_ERROR; | |
199 | break; | |
200 | } | |
201 | else | |
202 | continue; | |
203 | } | |
204 | ||
205 | /* | |
d6ae789d | 206 | * Send the IPP data... |
ecdc0628 | 207 | */ |
208 | ||
d6ae789d | 209 | DEBUG_puts("cupsDoFileRequest: ipp write..."); |
b423cd4c | 210 | |
d6ae789d | 211 | request->state = IPP_IDLE; |
212 | status = HTTP_CONTINUE; | |
213 | got_status = 0; | |
214 | ||
215 | while ((state = ippWrite(http, request)) != IPP_DATA) | |
216 | if (state == IPP_ERROR) | |
217 | break; | |
218 | else if (httpCheck(http)) | |
219 | { | |
220 | got_status = 1; | |
221 | ||
222 | if ((status = httpUpdate(http)) != HTTP_CONTINUE) | |
223 | break; | |
224 | } | |
225 | ||
226 | if (!got_status) | |
b423cd4c | 227 | { |
228 | /* | |
d6ae789d | 229 | * Wait up to 1 second to get the 100-continue response... |
b423cd4c | 230 | */ |
ecdc0628 | 231 | |
d6ae789d | 232 | if (httpWait(http, 1000)) |
233 | status = httpUpdate(http); | |
234 | } | |
235 | else if (httpCheck(http)) | |
236 | status = httpUpdate(http); | |
ecdc0628 | 237 | |
d6ae789d | 238 | if (status == HTTP_CONTINUE && state == IPP_DATA && filename) |
239 | { | |
240 | DEBUG_puts("cupsDoFileRequest: file write..."); | |
b423cd4c | 241 | |
d6ae789d | 242 | /* |
243 | * Send the file... | |
244 | */ | |
245 | ||
246 | rewind(file); | |
247 | ||
248 | while ((bytes = (int)fread(buffer, 1, sizeof(buffer), file)) > 0) | |
249 | { | |
250 | if (httpCheck(http)) | |
b423cd4c | 251 | { |
252 | if ((status = httpUpdate(http)) != HTTP_CONTINUE) | |
253 | break; | |
254 | } | |
255 | ||
d6ae789d | 256 | if (httpWrite2(http, buffer, bytes) < bytes) |
257 | break; | |
ecdc0628 | 258 | } |
b423cd4c | 259 | } |
ecdc0628 | 260 | |
261 | /* | |
262 | * Get the server's return status... | |
263 | */ | |
264 | ||
265 | DEBUG_puts("cupsDoFileRequest: update..."); | |
266 | ||
267 | while (status == HTTP_CONTINUE) | |
268 | status = httpUpdate(http); | |
269 | ||
270 | DEBUG_printf(("cupsDoFileRequest: status = %d\n", status)); | |
271 | ||
272 | if (status == HTTP_UNAUTHORIZED) | |
273 | { | |
274 | DEBUG_puts("cupsDoFileRequest: unauthorized..."); | |
275 | ||
276 | /* | |
277 | * Flush any error message... | |
278 | */ | |
279 | ||
280 | httpFlush(http); | |
281 | ||
282 | /* | |
283 | * See if we can do authentication... | |
284 | */ | |
285 | ||
286 | if (cupsDoAuthentication(http, "POST", resource)) | |
287 | break; | |
288 | ||
289 | if (httpReconnect(http)) | |
290 | { | |
291 | status = HTTP_ERROR; | |
292 | break; | |
293 | } | |
294 | ||
295 | continue; | |
296 | } | |
297 | else if (status == HTTP_ERROR) | |
298 | { | |
89d46774 | 299 | DEBUG_printf(("cupsDoFileRequest: http->error=%d (%s)\n", http->error, |
300 | strerror(http->error))); | |
301 | ||
ecdc0628 | 302 | #ifdef WIN32 |
89d46774 | 303 | if (http->error != WSAENETDOWN && http->error != WSAENETUNREACH && |
b86bc4cf | 304 | http->error != WSAETIMEDOUT) |
ecdc0628 | 305 | #else |
89d46774 | 306 | if (http->error != ENETDOWN && http->error != ENETUNREACH && |
307 | http->error != ETIMEDOUT) | |
ecdc0628 | 308 | #endif /* WIN32 */ |
309 | continue; | |
310 | else | |
311 | break; | |
312 | } | |
313 | #ifdef HAVE_SSL | |
314 | else if (status == HTTP_UPGRADE_REQUIRED) | |
315 | { | |
316 | /* Flush any error message... */ | |
317 | httpFlush(http); | |
318 | ||
319 | /* Reconnect... */ | |
320 | if (httpReconnect(http)) | |
321 | { | |
322 | status = HTTP_ERROR; | |
323 | break; | |
324 | } | |
325 | ||
326 | /* Upgrade with encryption... */ | |
327 | httpEncryption(http, HTTP_ENCRYPT_REQUIRED); | |
328 | ||
329 | /* Try again, this time with encryption enabled... */ | |
330 | continue; | |
331 | } | |
332 | #endif /* HAVE_SSL */ | |
f301802f | 333 | else if (status == HTTP_EXPECTATION_FAILED) |
334 | { | |
335 | /* | |
336 | * Don't try using the Expect: header the next time around... | |
337 | */ | |
338 | ||
339 | expect = (http_status_t)0; | |
340 | } | |
ecdc0628 | 341 | else if (status != HTTP_OK) |
342 | { | |
343 | DEBUG_printf(("cupsDoFileRequest: error %d...\n", status)); | |
344 | ||
345 | /* | |
346 | * Flush any error message... | |
347 | */ | |
348 | ||
349 | httpFlush(http); | |
350 | break; | |
351 | } | |
352 | else | |
353 | { | |
354 | /* | |
355 | * Read the response... | |
356 | */ | |
357 | ||
358 | DEBUG_puts("cupsDoFileRequest: response..."); | |
359 | ||
360 | response = ippNew(); | |
361 | ||
89d46774 | 362 | while ((state = ippRead(http, response)) != IPP_DATA) |
363 | if (state == IPP_ERROR) | |
c0e1af83 | 364 | break; |
365 | ||
366 | if (state == IPP_ERROR) | |
367 | { | |
368 | /* | |
369 | * Delete the response... | |
370 | */ | |
ecdc0628 | 371 | |
c0e1af83 | 372 | DEBUG_puts("IPP read error!"); |
373 | ippDelete(response); | |
374 | response = NULL; | |
ecdc0628 | 375 | |
c0e1af83 | 376 | _cupsSetError(IPP_SERVICE_UNAVAILABLE, strerror(errno)); |
ecdc0628 | 377 | |
c0e1af83 | 378 | break; |
379 | } | |
ecdc0628 | 380 | } |
381 | } | |
382 | ||
383 | /* | |
384 | * Close the file if needed... | |
385 | */ | |
386 | ||
387 | if (filename != NULL) | |
388 | fclose(file); | |
389 | ||
390 | /* | |
391 | * Flush any remaining data... | |
392 | */ | |
393 | ||
394 | httpFlush(http); | |
395 | ||
396 | /* | |
397 | * Delete the original request and return the response... | |
398 | */ | |
399 | ||
400 | ippDelete(request); | |
401 | ||
402 | if (response) | |
403 | { | |
404 | ipp_attribute_t *attr; /* status-message attribute */ | |
405 | ||
406 | ||
407 | attr = ippFindAttribute(response, "status-message", IPP_TAG_TEXT); | |
408 | ||
409 | _cupsSetError(response->request.status.status_code, | |
410 | attr ? attr->values[0].string.text : | |
411 | ippErrorString(response->request.status.status_code)); | |
412 | } | |
413 | else if (status != HTTP_OK) | |
414 | { | |
415 | switch (status) | |
416 | { | |
417 | case HTTP_NOT_FOUND : | |
418 | _cupsSetError(IPP_NOT_FOUND, httpStatus(status)); | |
419 | break; | |
420 | ||
421 | case HTTP_UNAUTHORIZED : | |
422 | _cupsSetError(IPP_NOT_AUTHORIZED, httpStatus(status)); | |
423 | break; | |
424 | ||
425 | case HTTP_FORBIDDEN : | |
426 | _cupsSetError(IPP_FORBIDDEN, httpStatus(status)); | |
427 | break; | |
428 | ||
429 | case HTTP_BAD_REQUEST : | |
430 | _cupsSetError(IPP_BAD_REQUEST, httpStatus(status)); | |
431 | break; | |
432 | ||
433 | case HTTP_REQUEST_TOO_LARGE : | |
434 | _cupsSetError(IPP_REQUEST_VALUE, httpStatus(status)); | |
435 | break; | |
436 | ||
437 | case HTTP_NOT_IMPLEMENTED : | |
438 | _cupsSetError(IPP_OPERATION_NOT_SUPPORTED, httpStatus(status)); | |
439 | break; | |
440 | ||
441 | case HTTP_NOT_SUPPORTED : | |
442 | _cupsSetError(IPP_VERSION_NOT_SUPPORTED, httpStatus(status)); | |
443 | break; | |
444 | ||
445 | default : | |
446 | DEBUG_printf(("HTTP error %d mapped to IPP_SERVICE_UNAVAILABLE!\n", | |
447 | status)); | |
448 | _cupsSetError(IPP_SERVICE_UNAVAILABLE, httpStatus(status)); | |
449 | break; | |
450 | } | |
451 | } | |
452 | ||
f7deaa1a | 453 | #ifdef HAVE_AUTHORIZATION_H |
454 | /* | |
455 | * Delete any authorization reference created for this request... | |
456 | */ | |
457 | ||
458 | if (cg->auth_ref) | |
459 | { | |
460 | AuthorizationFree(cg->auth_ref, kAuthorizationFlagDefaults); | |
461 | cg->auth_ref = NULL; | |
462 | } | |
463 | #endif /* HAVE_AUTHORIZATION_H */ | |
464 | ||
ecdc0628 | 465 | return (response); |
466 | } | |
467 | ||
468 | ||
469 | /* | |
470 | * 'cupsDoRequest()' - Do an IPP request. | |
471 | * | |
472 | * This function sends the IPP request to the specified server, retrying | |
473 | * and authenticating as necessary. The request is freed with ippDelete() | |
474 | * after receiving a valid IPP response. | |
475 | */ | |
476 | ||
477 | ipp_t * /* O - Response data */ | |
478 | cupsDoRequest(http_t *http, /* I - HTTP connection to server */ | |
479 | ipp_t *request, /* I - IPP request */ | |
480 | const char *resource) /* I - HTTP resource for POST */ | |
481 | { | |
482 | return (cupsDoFileRequest(http, request, resource, NULL)); | |
483 | } | |
484 | ||
485 | ||
486 | /* | |
487 | * '_cupsSetError()' - Set the last IPP status code and status-message. | |
488 | */ | |
489 | ||
490 | void | |
491 | _cupsSetError(ipp_status_t status, /* I - IPP status code */ | |
492 | const char *message) /* I - status-message value */ | |
493 | { | |
494 | _cups_globals_t *cg; /* Global data */ | |
495 | ||
496 | ||
497 | cg = _cupsGlobals(); | |
498 | cg->last_error = status; | |
499 | ||
500 | if (cg->last_status_message) | |
501 | { | |
502 | free(cg->last_status_message); | |
503 | ||
504 | cg->last_status_message = NULL; | |
505 | } | |
506 | ||
507 | if (message) | |
508 | cg->last_status_message = strdup(message); | |
509 | } | |
510 | ||
511 | ||
512 | /* | |
c0e1af83 | 513 | * End of "$Id: request.c 6416 2007-03-30 18:30:33Z mike $". |
ecdc0628 | 514 | */ |