]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * IPP utilities for CUPS. | |
3 | * | |
4 | * Copyright 2007-2017 by Apple Inc. | |
5 | * Copyright 1997-2007 by Easy Software Products. | |
6 | * | |
7 | * These coded instructions, statements, and computer programs are the | |
8 | * property of Apple Inc. and are protected by Federal copyright | |
9 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
10 | * which should have been included with this file. If this file is | |
11 | * missing or damaged, see the license at "http://www.cups.org/". | |
12 | * | |
13 | * This file is subject to the Apple OS-Developed Software exception. | |
14 | */ | |
15 | ||
16 | /* | |
17 | * Include necessary headers... | |
18 | */ | |
19 | ||
20 | #include "cups-private.h" | |
21 | #include <fcntl.h> | |
22 | #include <sys/stat.h> | |
23 | #if defined(WIN32) || defined(__EMX__) | |
24 | # include <io.h> | |
25 | #else | |
26 | # include <unistd.h> | |
27 | #endif /* WIN32 || __EMX__ */ | |
28 | #ifndef O_BINARY | |
29 | # define O_BINARY 0 | |
30 | #endif /* O_BINARY */ | |
31 | #ifndef MSG_DONTWAIT | |
32 | # define MSG_DONTWAIT 0 | |
33 | #endif /* !MSG_DONTWAIT */ | |
34 | ||
35 | ||
36 | /* | |
37 | * 'cupsDoFileRequest()' - Do an IPP request with a file. | |
38 | * | |
39 | * This function sends the IPP request and attached file to the specified | |
40 | * server, retrying and authenticating as necessary. The request is freed with | |
41 | * @link ippDelete@. | |
42 | */ | |
43 | ||
44 | ipp_t * /* O - Response data */ | |
45 | cupsDoFileRequest(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */ | |
46 | ipp_t *request, /* I - IPP request */ | |
47 | const char *resource, /* I - HTTP resource for POST */ | |
48 | const char *filename) /* I - File to send or @code NULL@ for none */ | |
49 | { | |
50 | ipp_t *response; /* IPP response data */ | |
51 | int infile; /* Input file */ | |
52 | ||
53 | ||
54 | DEBUG_printf(("cupsDoFileRequest(http=%p, request=%p(%s), resource=\"%s\", filename=\"%s\")", (void *)http, (void *)request, request ? ippOpString(request->request.op.operation_id) : "?", resource, filename)); | |
55 | ||
56 | if (filename) | |
57 | { | |
58 | if ((infile = open(filename, O_RDONLY | O_BINARY)) < 0) | |
59 | { | |
60 | /* | |
61 | * Can't get file information! | |
62 | */ | |
63 | ||
64 | _cupsSetError(errno == ENOENT ? IPP_STATUS_ERROR_NOT_FOUND : IPP_STATUS_ERROR_NOT_AUTHORIZED, | |
65 | NULL, 0); | |
66 | ||
67 | ippDelete(request); | |
68 | ||
69 | return (NULL); | |
70 | } | |
71 | } | |
72 | else | |
73 | infile = -1; | |
74 | ||
75 | response = cupsDoIORequest(http, request, resource, infile, -1); | |
76 | ||
77 | if (infile >= 0) | |
78 | close(infile); | |
79 | ||
80 | return (response); | |
81 | } | |
82 | ||
83 | ||
84 | /* | |
85 | * 'cupsDoIORequest()' - Do an IPP request with file descriptors. | |
86 | * | |
87 | * This function sends the IPP request with the optional input file "infile" to | |
88 | * the specified server, retrying and authenticating as necessary. The request | |
89 | * is freed with @link ippDelete@. | |
90 | * | |
91 | * If "infile" is a valid file descriptor, @code cupsDoIORequest@ copies | |
92 | * all of the data from the file after the IPP request message. | |
93 | * | |
94 | * If "outfile" is a valid file descriptor, @code cupsDoIORequest@ copies | |
95 | * all of the data after the IPP response message to the file. | |
96 | * | |
97 | * @since CUPS 1.3/macOS 10.5@ | |
98 | */ | |
99 | ||
100 | ipp_t * /* O - Response data */ | |
101 | cupsDoIORequest(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */ | |
102 | ipp_t *request, /* I - IPP request */ | |
103 | const char *resource, /* I - HTTP resource for POST */ | |
104 | int infile, /* I - File to read from or -1 for none */ | |
105 | int outfile) /* I - File to write to or -1 for none */ | |
106 | { | |
107 | ipp_t *response = NULL; /* IPP response data */ | |
108 | size_t length = 0; /* Content-Length value */ | |
109 | http_status_t status; /* Status of HTTP request */ | |
110 | struct stat fileinfo; /* File information */ | |
111 | ssize_t bytes; /* Number of bytes read/written */ | |
112 | char buffer[32768]; /* Output buffer */ | |
113 | ||
114 | ||
115 | DEBUG_printf(("cupsDoIORequest(http=%p, request=%p(%s), resource=\"%s\", infile=%d, outfile=%d)", (void *)http, (void *)request, request ? ippOpString(request->request.op.operation_id) : "?", resource, infile, outfile)); | |
116 | ||
117 | /* | |
118 | * Range check input... | |
119 | */ | |
120 | ||
121 | if (!request || !resource) | |
122 | { | |
123 | ippDelete(request); | |
124 | ||
125 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(EINVAL), 0); | |
126 | ||
127 | return (NULL); | |
128 | } | |
129 | ||
130 | /* | |
131 | * Get the default connection as needed... | |
132 | */ | |
133 | ||
134 | if (!http) | |
135 | if ((http = _cupsConnect()) == NULL) | |
136 | { | |
137 | ippDelete(request); | |
138 | ||
139 | return (NULL); | |
140 | } | |
141 | ||
142 | /* | |
143 | * See if we have a file to send... | |
144 | */ | |
145 | ||
146 | if (infile >= 0) | |
147 | { | |
148 | if (fstat(infile, &fileinfo)) | |
149 | { | |
150 | /* | |
151 | * Can't get file information! | |
152 | */ | |
153 | ||
154 | _cupsSetError(errno == EBADF ? IPP_STATUS_ERROR_NOT_FOUND : IPP_STATUS_ERROR_NOT_AUTHORIZED, | |
155 | NULL, 0); | |
156 | ||
157 | ippDelete(request); | |
158 | ||
159 | return (NULL); | |
160 | } | |
161 | ||
162 | #ifdef WIN32 | |
163 | if (fileinfo.st_mode & _S_IFDIR) | |
164 | #else | |
165 | if (S_ISDIR(fileinfo.st_mode)) | |
166 | #endif /* WIN32 */ | |
167 | { | |
168 | /* | |
169 | * Can't send a directory... | |
170 | */ | |
171 | ||
172 | ippDelete(request); | |
173 | ||
174 | _cupsSetError(IPP_STATUS_ERROR_NOT_POSSIBLE, strerror(EISDIR), 0); | |
175 | ||
176 | return (NULL); | |
177 | } | |
178 | ||
179 | #ifndef WIN32 | |
180 | if (!S_ISREG(fileinfo.st_mode)) | |
181 | length = 0; /* Chunk when piping */ | |
182 | else | |
183 | #endif /* !WIN32 */ | |
184 | length = ippLength(request) + (size_t)fileinfo.st_size; | |
185 | } | |
186 | else | |
187 | length = ippLength(request); | |
188 | ||
189 | DEBUG_printf(("2cupsDoIORequest: Request length=%ld, total length=%ld", | |
190 | (long)ippLength(request), (long)length)); | |
191 | ||
192 | /* | |
193 | * Clear any "Local" authentication data since it is probably stale... | |
194 | */ | |
195 | ||
196 | if (http->authstring && !strncmp(http->authstring, "Local ", 6)) | |
197 | httpSetAuthString(http, NULL, NULL); | |
198 | ||
199 | /* | |
200 | * Loop until we can send the request without authorization problems. | |
201 | */ | |
202 | ||
203 | while (response == NULL) | |
204 | { | |
205 | DEBUG_puts("2cupsDoIORequest: setup..."); | |
206 | ||
207 | /* | |
208 | * Send the request... | |
209 | */ | |
210 | ||
211 | status = cupsSendRequest(http, request, resource, length); | |
212 | ||
213 | DEBUG_printf(("2cupsDoIORequest: status=%d", status)); | |
214 | ||
215 | if (status == HTTP_STATUS_CONTINUE && request->state == IPP_STATE_DATA && infile >= 0) | |
216 | { | |
217 | DEBUG_puts("2cupsDoIORequest: file write..."); | |
218 | ||
219 | /* | |
220 | * Send the file with the request... | |
221 | */ | |
222 | ||
223 | #ifndef WIN32 | |
224 | if (S_ISREG(fileinfo.st_mode)) | |
225 | #endif /* WIN32 */ | |
226 | lseek(infile, 0, SEEK_SET); | |
227 | ||
228 | while ((bytes = read(infile, buffer, sizeof(buffer))) > 0) | |
229 | { | |
230 | if ((status = cupsWriteRequestData(http, buffer, (size_t)bytes)) | |
231 | != HTTP_STATUS_CONTINUE) | |
232 | break; | |
233 | } | |
234 | } | |
235 | ||
236 | /* | |
237 | * Get the server's response... | |
238 | */ | |
239 | ||
240 | if (status <= HTTP_STATUS_CONTINUE || status == HTTP_STATUS_OK) | |
241 | { | |
242 | response = cupsGetResponse(http, resource); | |
243 | status = httpGetStatus(http); | |
244 | } | |
245 | ||
246 | DEBUG_printf(("2cupsDoIORequest: status=%d", status)); | |
247 | ||
248 | if (status == HTTP_STATUS_ERROR || | |
249 | (status >= HTTP_STATUS_BAD_REQUEST && status != HTTP_STATUS_UNAUTHORIZED && | |
250 | status != HTTP_STATUS_UPGRADE_REQUIRED)) | |
251 | { | |
252 | _cupsSetHTTPError(status); | |
253 | break; | |
254 | } | |
255 | ||
256 | if (response && outfile >= 0) | |
257 | { | |
258 | /* | |
259 | * Write trailing data to file... | |
260 | */ | |
261 | ||
262 | while ((bytes = httpRead2(http, buffer, sizeof(buffer))) > 0) | |
263 | if (write(outfile, buffer, (size_t)bytes) < bytes) | |
264 | break; | |
265 | } | |
266 | ||
267 | if (http->state != HTTP_STATE_WAITING) | |
268 | { | |
269 | /* | |
270 | * Flush any remaining data... | |
271 | */ | |
272 | ||
273 | httpFlush(http); | |
274 | } | |
275 | } | |
276 | ||
277 | /* | |
278 | * Delete the original request and return the response... | |
279 | */ | |
280 | ||
281 | ippDelete(request); | |
282 | ||
283 | return (response); | |
284 | } | |
285 | ||
286 | ||
287 | /* | |
288 | * 'cupsDoRequest()' - Do an IPP request. | |
289 | * | |
290 | * This function sends the IPP request to the specified server, retrying | |
291 | * and authenticating as necessary. The request is freed with @link ippDelete@. | |
292 | */ | |
293 | ||
294 | ipp_t * /* O - Response data */ | |
295 | cupsDoRequest(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */ | |
296 | ipp_t *request, /* I - IPP request */ | |
297 | const char *resource) /* I - HTTP resource for POST */ | |
298 | { | |
299 | DEBUG_printf(("cupsDoRequest(http=%p, request=%p(%s), resource=\"%s\")", (void *)http, (void *)request, request ? ippOpString(request->request.op.operation_id) : "?", resource)); | |
300 | ||
301 | return (cupsDoIORequest(http, request, resource, -1, -1)); | |
302 | } | |
303 | ||
304 | ||
305 | /* | |
306 | * 'cupsGetResponse()' - Get a response to an IPP request. | |
307 | * | |
308 | * Use this function to get the response for an IPP request sent using | |
309 | * @link cupsSendRequest@. For requests that return additional data, use | |
310 | * @link cupsReadResponseData@ after getting a successful response, | |
311 | * otherwise call @link httpFlush@ to complete the response processing. | |
312 | * | |
313 | * @since CUPS 1.4/macOS 10.6@ | |
314 | */ | |
315 | ||
316 | ipp_t * /* O - Response or @code NULL@ on HTTP error */ | |
317 | cupsGetResponse(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */ | |
318 | const char *resource) /* I - HTTP resource for POST */ | |
319 | { | |
320 | http_status_t status; /* HTTP status */ | |
321 | ipp_state_t state; /* IPP read state */ | |
322 | ipp_t *response = NULL; /* IPP response */ | |
323 | ||
324 | ||
325 | DEBUG_printf(("cupsGetResponse(http=%p, resource=\"%s\")", (void *)http, resource)); | |
326 | DEBUG_printf(("1cupsGetResponse: http->state=%d", http ? http->state : HTTP_STATE_ERROR)); | |
327 | ||
328 | /* | |
329 | * Connect to the default server as needed... | |
330 | */ | |
331 | ||
332 | if (!http) | |
333 | { | |
334 | _cups_globals_t *cg = _cupsGlobals(); | |
335 | /* Pointer to library globals */ | |
336 | ||
337 | if ((http = cg->http) == NULL) | |
338 | { | |
339 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No active connection."), 1); | |
340 | DEBUG_puts("1cupsGetResponse: No active connection - returning NULL."); | |
341 | return (NULL); | |
342 | } | |
343 | } | |
344 | ||
345 | if (http->state != HTTP_STATE_POST_RECV && http->state != HTTP_STATE_POST_SEND) | |
346 | { | |
347 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No request sent."), 1); | |
348 | DEBUG_puts("1cupsGetResponse: Not in POST state - returning NULL."); | |
349 | return (NULL); | |
350 | } | |
351 | ||
352 | /* | |
353 | * Check for an unfinished chunked request... | |
354 | */ | |
355 | ||
356 | if (http->data_encoding == HTTP_ENCODING_CHUNKED) | |
357 | { | |
358 | /* | |
359 | * Send a 0-length chunk to finish off the request... | |
360 | */ | |
361 | ||
362 | DEBUG_puts("2cupsGetResponse: Finishing chunked POST..."); | |
363 | ||
364 | if (httpWrite2(http, "", 0) < 0) | |
365 | return (NULL); | |
366 | } | |
367 | ||
368 | /* | |
369 | * Wait for a response from the server... | |
370 | */ | |
371 | ||
372 | DEBUG_printf(("2cupsGetResponse: Update loop, http->status=%d...", | |
373 | http->status)); | |
374 | ||
375 | do | |
376 | { | |
377 | status = httpUpdate(http); | |
378 | } | |
379 | while (status == HTTP_STATUS_CONTINUE); | |
380 | ||
381 | DEBUG_printf(("2cupsGetResponse: status=%d", status)); | |
382 | ||
383 | if (status == HTTP_STATUS_OK) | |
384 | { | |
385 | /* | |
386 | * Get the IPP response... | |
387 | */ | |
388 | ||
389 | response = ippNew(); | |
390 | ||
391 | while ((state = ippRead(http, response)) != IPP_STATE_DATA) | |
392 | if (state == IPP_STATE_ERROR) | |
393 | break; | |
394 | ||
395 | if (state == IPP_STATE_ERROR) | |
396 | { | |
397 | /* | |
398 | * Flush remaining data and delete the response... | |
399 | */ | |
400 | ||
401 | DEBUG_puts("1cupsGetResponse: IPP read error!"); | |
402 | ||
403 | httpFlush(http); | |
404 | ||
405 | ippDelete(response); | |
406 | response = NULL; | |
407 | ||
408 | http->status = status = HTTP_STATUS_ERROR; | |
409 | http->error = EINVAL; | |
410 | } | |
411 | } | |
412 | else if (status != HTTP_STATUS_ERROR) | |
413 | { | |
414 | /* | |
415 | * Flush any error message... | |
416 | */ | |
417 | ||
418 | httpFlush(http); | |
419 | ||
420 | /* | |
421 | * Then handle encryption and authentication... | |
422 | */ | |
423 | ||
424 | if (status == HTTP_STATUS_UNAUTHORIZED) | |
425 | { | |
426 | /* | |
427 | * See if we can do authentication... | |
428 | */ | |
429 | ||
430 | DEBUG_puts("2cupsGetResponse: Need authorization..."); | |
431 | ||
432 | if (!cupsDoAuthentication(http, "POST", resource)) | |
433 | httpReconnect2(http, 30000, NULL); | |
434 | else | |
435 | http->status = status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED; | |
436 | } | |
437 | ||
438 | #ifdef HAVE_SSL | |
439 | else if (status == HTTP_STATUS_UPGRADE_REQUIRED) | |
440 | { | |
441 | /* | |
442 | * Force a reconnect with encryption... | |
443 | */ | |
444 | ||
445 | DEBUG_puts("2cupsGetResponse: Need encryption..."); | |
446 | ||
447 | if (!httpReconnect2(http, 30000, NULL)) | |
448 | httpEncryption(http, HTTP_ENCRYPTION_REQUIRED); | |
449 | } | |
450 | #endif /* HAVE_SSL */ | |
451 | } | |
452 | ||
453 | if (response) | |
454 | { | |
455 | ipp_attribute_t *attr; /* status-message attribute */ | |
456 | ||
457 | ||
458 | attr = ippFindAttribute(response, "status-message", IPP_TAG_TEXT); | |
459 | ||
460 | DEBUG_printf(("1cupsGetResponse: status-code=%s, status-message=\"%s\"", | |
461 | ippErrorString(response->request.status.status_code), | |
462 | attr ? attr->values[0].string.text : "")); | |
463 | ||
464 | _cupsSetError(response->request.status.status_code, | |
465 | attr ? attr->values[0].string.text : | |
466 | ippErrorString(response->request.status.status_code), 0); | |
467 | } | |
468 | ||
469 | return (response); | |
470 | } | |
471 | ||
472 | ||
473 | /* | |
474 | * 'cupsLastError()' - Return the last IPP status code received on the current | |
475 | * thread. | |
476 | */ | |
477 | ||
478 | ipp_status_t /* O - IPP status code from last request */ | |
479 | cupsLastError(void) | |
480 | { | |
481 | return (_cupsGlobals()->last_error); | |
482 | } | |
483 | ||
484 | ||
485 | /* | |
486 | * 'cupsLastErrorString()' - Return the last IPP status-message received on the | |
487 | * current thread. | |
488 | * | |
489 | * @since CUPS 1.2/macOS 10.5@ | |
490 | */ | |
491 | ||
492 | const char * /* O - status-message text from last request */ | |
493 | cupsLastErrorString(void) | |
494 | { | |
495 | return (_cupsGlobals()->last_status_message); | |
496 | } | |
497 | ||
498 | ||
499 | /* | |
500 | * '_cupsNextDelay()' - Return the next retry delay value. | |
501 | * | |
502 | * This function currently returns the Fibonacci sequence 1 1 2 3 5 8. | |
503 | * | |
504 | * Pass 0 for the current delay value to initialize the sequence. | |
505 | */ | |
506 | ||
507 | int /* O - Next delay value */ | |
508 | _cupsNextDelay(int current, /* I - Current delay value or 0 */ | |
509 | int *previous) /* IO - Previous delay value */ | |
510 | { | |
511 | int next; /* Next delay value */ | |
512 | ||
513 | ||
514 | if (current > 0) | |
515 | { | |
516 | next = (current + *previous) % 12; | |
517 | *previous = next < current ? 0 : current; | |
518 | } | |
519 | else | |
520 | { | |
521 | next = 1; | |
522 | *previous = 0; | |
523 | } | |
524 | ||
525 | return (next); | |
526 | } | |
527 | ||
528 | ||
529 | /* | |
530 | * 'cupsReadResponseData()' - Read additional data after the IPP response. | |
531 | * | |
532 | * This function is used after @link cupsGetResponse@ to read the PPD or document | |
533 | * files from @code CUPS_GET_PPD@ and @code CUPS_GET_DOCUMENT@ requests, | |
534 | * respectively. | |
535 | * | |
536 | * @since CUPS 1.4/macOS 10.6@ | |
537 | */ | |
538 | ||
539 | ssize_t /* O - Bytes read, 0 on EOF, -1 on error */ | |
540 | cupsReadResponseData( | |
541 | http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */ | |
542 | char *buffer, /* I - Buffer to use */ | |
543 | size_t length) /* I - Number of bytes to read */ | |
544 | { | |
545 | /* | |
546 | * Get the default connection as needed... | |
547 | */ | |
548 | ||
549 | DEBUG_printf(("cupsReadResponseData(http=%p, buffer=%p, length=" CUPS_LLFMT ")", (void *)http, (void *)buffer, CUPS_LLCAST length)); | |
550 | ||
551 | if (!http) | |
552 | { | |
553 | _cups_globals_t *cg = _cupsGlobals(); | |
554 | /* Pointer to library globals */ | |
555 | ||
556 | if ((http = cg->http) == NULL) | |
557 | { | |
558 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No active connection"), 1); | |
559 | return (-1); | |
560 | } | |
561 | } | |
562 | ||
563 | /* | |
564 | * Then read from the HTTP connection... | |
565 | */ | |
566 | ||
567 | return (httpRead2(http, buffer, length)); | |
568 | } | |
569 | ||
570 | ||
571 | /* | |
572 | * 'cupsSendRequest()' - Send an IPP request. | |
573 | * | |
574 | * Use @link cupsWriteRequestData@ to write any additional data (document, PPD | |
575 | * file, etc.) for the request, @link cupsGetResponse@ to get the IPP response, | |
576 | * and @link cupsReadResponseData@ to read any additional data following the | |
577 | * response. Only one request can be sent/queued at a time per @code http_t@ | |
578 | * connection. | |
579 | * | |
580 | * Returns the initial HTTP status code, which will be @code HTTP_STATUS_CONTINUE@ | |
581 | * on a successful send of the request. | |
582 | * | |
583 | * Note: Unlike @link cupsDoFileRequest@, @link cupsDoIORequest@, and | |
584 | * @link cupsDoRequest@, the request is NOT freed with @link ippDelete@. | |
585 | * | |
586 | * @since CUPS 1.4/macOS 10.6@ | |
587 | */ | |
588 | ||
589 | http_status_t /* O - Initial HTTP status */ | |
590 | cupsSendRequest(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */ | |
591 | ipp_t *request, /* I - IPP request */ | |
592 | const char *resource, /* I - Resource path */ | |
593 | size_t length) /* I - Length of data to follow or @code CUPS_LENGTH_VARIABLE@ */ | |
594 | { | |
595 | http_status_t status; /* Status of HTTP request */ | |
596 | int got_status; /* Did we get the status? */ | |
597 | ipp_state_t state; /* State of IPP processing */ | |
598 | http_status_t expect; /* Expect: header to use */ | |
599 | char date[256]; /* Date: header value */ | |
600 | ||
601 | ||
602 | DEBUG_printf(("cupsSendRequest(http=%p, request=%p(%s), resource=\"%s\", length=" CUPS_LLFMT ")", (void *)http, (void *)request, request ? ippOpString(request->request.op.operation_id) : "?", resource, CUPS_LLCAST length)); | |
603 | ||
604 | /* | |
605 | * Range check input... | |
606 | */ | |
607 | ||
608 | if (!request || !resource) | |
609 | { | |
610 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(EINVAL), 0); | |
611 | ||
612 | return (HTTP_STATUS_ERROR); | |
613 | } | |
614 | ||
615 | /* | |
616 | * Get the default connection as needed... | |
617 | */ | |
618 | ||
619 | if (!http) | |
620 | if ((http = _cupsConnect()) == NULL) | |
621 | return (HTTP_STATUS_SERVICE_UNAVAILABLE); | |
622 | ||
623 | /* | |
624 | * If the prior request was not flushed out, do so now... | |
625 | */ | |
626 | ||
627 | if (http->state == HTTP_STATE_GET_SEND || | |
628 | http->state == HTTP_STATE_POST_SEND) | |
629 | { | |
630 | DEBUG_puts("2cupsSendRequest: Flush prior response."); | |
631 | httpFlush(http); | |
632 | } | |
633 | else if (http->state != HTTP_STATE_WAITING) | |
634 | { | |
635 | DEBUG_printf(("1cupsSendRequest: Unknown HTTP state (%d), " | |
636 | "reconnecting.", http->state)); | |
637 | if (httpReconnect2(http, 30000, NULL)) | |
638 | return (HTTP_STATUS_ERROR); | |
639 | } | |
640 | ||
641 | #ifdef HAVE_SSL | |
642 | /* | |
643 | * See if we have an auth-info attribute and are communicating over | |
644 | * a non-local link. If so, encrypt the link so that we can pass | |
645 | * the authentication information securely... | |
646 | */ | |
647 | ||
648 | if (ippFindAttribute(request, "auth-info", IPP_TAG_TEXT) && | |
649 | !httpAddrLocalhost(http->hostaddr) && !http->tls && | |
650 | httpEncryption(http, HTTP_ENCRYPTION_REQUIRED)) | |
651 | { | |
652 | DEBUG_puts("1cupsSendRequest: Unable to encrypt connection."); | |
653 | return (HTTP_STATUS_SERVICE_UNAVAILABLE); | |
654 | } | |
655 | #endif /* HAVE_SSL */ | |
656 | ||
657 | /* | |
658 | * Reconnect if the last response had a "Connection: close"... | |
659 | */ | |
660 | ||
661 | if (!_cups_strcasecmp(http->fields[HTTP_FIELD_CONNECTION], "close")) | |
662 | { | |
663 | DEBUG_puts("2cupsSendRequest: Connection: close"); | |
664 | httpClearFields(http); | |
665 | if (httpReconnect2(http, 30000, NULL)) | |
666 | { | |
667 | DEBUG_puts("1cupsSendRequest: Unable to reconnect."); | |
668 | return (HTTP_STATUS_SERVICE_UNAVAILABLE); | |
669 | } | |
670 | } | |
671 | ||
672 | /* | |
673 | * Loop until we can send the request without authorization problems. | |
674 | */ | |
675 | ||
676 | expect = HTTP_STATUS_CONTINUE; | |
677 | ||
678 | for (;;) | |
679 | { | |
680 | DEBUG_puts("2cupsSendRequest: Setup..."); | |
681 | ||
682 | /* | |
683 | * Setup the HTTP variables needed... | |
684 | */ | |
685 | ||
686 | httpClearFields(http); | |
687 | httpSetExpect(http, expect); | |
688 | httpSetField(http, HTTP_FIELD_CONTENT_TYPE, "application/ipp"); | |
689 | httpSetField(http, HTTP_FIELD_DATE, httpGetDateString2(time(NULL), date, (int)sizeof(date))); | |
690 | httpSetLength(http, length); | |
691 | ||
692 | #ifdef HAVE_GSSAPI | |
693 | if (http->authstring && !strncmp(http->authstring, "Negotiate", 9)) | |
694 | { | |
695 | /* | |
696 | * Do not use cached Kerberos credentials since they will look like a | |
697 | * "replay" attack... | |
698 | */ | |
699 | ||
700 | _cupsSetNegotiateAuthString(http, "POST", resource); | |
701 | } | |
702 | #endif /* HAVE_GSSAPI */ | |
703 | ||
704 | httpSetField(http, HTTP_FIELD_AUTHORIZATION, http->authstring); | |
705 | ||
706 | DEBUG_printf(("2cupsSendRequest: authstring=\"%s\"", http->authstring)); | |
707 | ||
708 | /* | |
709 | * Try the request... | |
710 | */ | |
711 | ||
712 | DEBUG_puts("2cupsSendRequest: Sending HTTP POST..."); | |
713 | ||
714 | if (httpPost(http, resource)) | |
715 | { | |
716 | DEBUG_puts("2cupsSendRequest: POST failed, reconnecting."); | |
717 | if (httpReconnect2(http, 30000, NULL)) | |
718 | { | |
719 | DEBUG_puts("1cupsSendRequest: Unable to reconnect."); | |
720 | return (HTTP_STATUS_SERVICE_UNAVAILABLE); | |
721 | } | |
722 | else | |
723 | continue; | |
724 | } | |
725 | ||
726 | /* | |
727 | * Send the IPP data... | |
728 | */ | |
729 | ||
730 | DEBUG_puts("2cupsSendRequest: Writing IPP request..."); | |
731 | ||
732 | request->state = IPP_STATE_IDLE; | |
733 | status = HTTP_STATUS_CONTINUE; | |
734 | got_status = 0; | |
735 | ||
736 | while ((state = ippWrite(http, request)) != IPP_STATE_DATA) | |
737 | { | |
738 | if (httpCheck(http)) | |
739 | { | |
740 | got_status = 1; | |
741 | ||
742 | _httpUpdate(http, &status); | |
743 | if (status >= HTTP_STATUS_MULTIPLE_CHOICES) | |
744 | break; | |
745 | } | |
746 | else if (state == IPP_STATE_ERROR) | |
747 | break; | |
748 | } | |
749 | ||
750 | if (state == IPP_STATE_ERROR) | |
751 | { | |
752 | /* | |
753 | * We weren't able to send the IPP request. But did we already get a HTTP | |
754 | * error status? | |
755 | */ | |
756 | ||
757 | if (!got_status || status < HTTP_STATUS_MULTIPLE_CHOICES) | |
758 | { | |
759 | /* | |
760 | * No, something else went wrong. | |
761 | */ | |
762 | ||
763 | DEBUG_puts("1cupsSendRequest: Unable to send IPP request."); | |
764 | ||
765 | http->status = HTTP_STATUS_ERROR; | |
766 | http->state = HTTP_STATE_WAITING; | |
767 | ||
768 | return (HTTP_STATUS_ERROR); | |
769 | } | |
770 | } | |
771 | ||
772 | /* | |
773 | * Wait up to 1 second to get the 100-continue response as needed... | |
774 | */ | |
775 | ||
776 | if (!got_status) | |
777 | { | |
778 | if (expect == HTTP_STATUS_CONTINUE) | |
779 | { | |
780 | DEBUG_puts("2cupsSendRequest: Waiting for 100-continue..."); | |
781 | ||
782 | if (httpWait(http, 1000)) | |
783 | _httpUpdate(http, &status); | |
784 | } | |
785 | else if (httpCheck(http)) | |
786 | _httpUpdate(http, &status); | |
787 | } | |
788 | ||
789 | DEBUG_printf(("2cupsSendRequest: status=%d", status)); | |
790 | ||
791 | /* | |
792 | * Process the current HTTP status... | |
793 | */ | |
794 | ||
795 | if (status >= HTTP_STATUS_MULTIPLE_CHOICES) | |
796 | { | |
797 | int temp_status; /* Temporary status */ | |
798 | ||
799 | _cupsSetHTTPError(status); | |
800 | ||
801 | do | |
802 | { | |
803 | temp_status = httpUpdate(http); | |
804 | } | |
805 | while (temp_status != HTTP_STATUS_ERROR && | |
806 | http->state == HTTP_STATE_POST_RECV); | |
807 | ||
808 | httpFlush(http); | |
809 | } | |
810 | ||
811 | switch (status) | |
812 | { | |
813 | case HTTP_STATUS_CONTINUE : | |
814 | case HTTP_STATUS_OK : | |
815 | case HTTP_STATUS_ERROR : | |
816 | DEBUG_printf(("1cupsSendRequest: Returning %d.", status)); | |
817 | return (status); | |
818 | ||
819 | case HTTP_STATUS_UNAUTHORIZED : | |
820 | if (cupsDoAuthentication(http, "POST", resource)) | |
821 | { | |
822 | DEBUG_puts("1cupsSendRequest: Returning HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED."); | |
823 | return (HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED); | |
824 | } | |
825 | ||
826 | DEBUG_puts("2cupsSendRequest: Reconnecting after HTTP_STATUS_UNAUTHORIZED."); | |
827 | ||
828 | if (httpReconnect2(http, 30000, NULL)) | |
829 | { | |
830 | DEBUG_puts("1cupsSendRequest: Unable to reconnect."); | |
831 | return (HTTP_STATUS_SERVICE_UNAVAILABLE); | |
832 | } | |
833 | break; | |
834 | ||
835 | #ifdef HAVE_SSL | |
836 | case HTTP_STATUS_UPGRADE_REQUIRED : | |
837 | /* | |
838 | * Flush any error message, reconnect, and then upgrade with | |
839 | * encryption... | |
840 | */ | |
841 | ||
842 | DEBUG_puts("2cupsSendRequest: Reconnecting after " | |
843 | "HTTP_STATUS_UPGRADE_REQUIRED."); | |
844 | ||
845 | if (httpReconnect2(http, 30000, NULL)) | |
846 | { | |
847 | DEBUG_puts("1cupsSendRequest: Unable to reconnect."); | |
848 | return (HTTP_STATUS_SERVICE_UNAVAILABLE); | |
849 | } | |
850 | ||
851 | DEBUG_puts("2cupsSendRequest: Upgrading to TLS."); | |
852 | if (httpEncryption(http, HTTP_ENCRYPTION_REQUIRED)) | |
853 | { | |
854 | DEBUG_puts("1cupsSendRequest: Unable to encrypt connection."); | |
855 | return (HTTP_STATUS_SERVICE_UNAVAILABLE); | |
856 | } | |
857 | break; | |
858 | #endif /* HAVE_SSL */ | |
859 | ||
860 | case HTTP_STATUS_EXPECTATION_FAILED : | |
861 | /* | |
862 | * Don't try using the Expect: header the next time around... | |
863 | */ | |
864 | ||
865 | expect = (http_status_t)0; | |
866 | ||
867 | DEBUG_puts("2cupsSendRequest: Reconnecting after " | |
868 | "HTTP_EXPECTATION_FAILED."); | |
869 | ||
870 | if (httpReconnect2(http, 30000, NULL)) | |
871 | { | |
872 | DEBUG_puts("1cupsSendRequest: Unable to reconnect."); | |
873 | return (HTTP_STATUS_SERVICE_UNAVAILABLE); | |
874 | } | |
875 | break; | |
876 | ||
877 | default : | |
878 | /* | |
879 | * Some other error... | |
880 | */ | |
881 | ||
882 | return (status); | |
883 | } | |
884 | } | |
885 | } | |
886 | ||
887 | ||
888 | /* | |
889 | * 'cupsWriteRequestData()' - Write additional data after an IPP request. | |
890 | * | |
891 | * This function is used after @link cupsSendRequest@ to provide a PPD and | |
892 | * after @link cupsStartDocument@ to provide a document file. | |
893 | * | |
894 | * @since CUPS 1.4/macOS 10.6@ | |
895 | */ | |
896 | ||
897 | http_status_t /* O - @code HTTP_STATUS_CONTINUE@ if OK or HTTP status on error */ | |
898 | cupsWriteRequestData( | |
899 | http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */ | |
900 | const char *buffer, /* I - Bytes to write */ | |
901 | size_t length) /* I - Number of bytes to write */ | |
902 | { | |
903 | int wused; /* Previous bytes in buffer */ | |
904 | ||
905 | ||
906 | /* | |
907 | * Get the default connection as needed... | |
908 | */ | |
909 | ||
910 | DEBUG_printf(("cupsWriteRequestData(http=%p, buffer=%p, length=" CUPS_LLFMT ")", (void *)http, (void *)buffer, CUPS_LLCAST length)); | |
911 | ||
912 | if (!http) | |
913 | { | |
914 | _cups_globals_t *cg = _cupsGlobals(); | |
915 | /* Pointer to library globals */ | |
916 | ||
917 | if ((http = cg->http) == NULL) | |
918 | { | |
919 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No active connection"), 1); | |
920 | DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_ERROR."); | |
921 | return (HTTP_STATUS_ERROR); | |
922 | } | |
923 | } | |
924 | ||
925 | /* | |
926 | * Then write to the HTTP connection... | |
927 | */ | |
928 | ||
929 | wused = http->wused; | |
930 | ||
931 | if (httpWrite2(http, buffer, length) < 0) | |
932 | { | |
933 | DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_ERROR."); | |
934 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(http->error), 0); | |
935 | return (HTTP_STATUS_ERROR); | |
936 | } | |
937 | ||
938 | /* | |
939 | * Finally, check if we have any pending data from the server... | |
940 | */ | |
941 | ||
942 | if (length >= HTTP_MAX_BUFFER || | |
943 | http->wused < wused || | |
944 | (wused > 0 && (size_t)http->wused == length)) | |
945 | { | |
946 | /* | |
947 | * We've written something to the server, so check for response data... | |
948 | */ | |
949 | ||
950 | if (_httpWait(http, 0, 1)) | |
951 | { | |
952 | http_status_t status; /* Status from _httpUpdate */ | |
953 | ||
954 | _httpUpdate(http, &status); | |
955 | if (status >= HTTP_STATUS_MULTIPLE_CHOICES) | |
956 | { | |
957 | _cupsSetHTTPError(status); | |
958 | ||
959 | do | |
960 | { | |
961 | status = httpUpdate(http); | |
962 | } | |
963 | while (status != HTTP_STATUS_ERROR && http->state == HTTP_STATE_POST_RECV); | |
964 | ||
965 | httpFlush(http); | |
966 | } | |
967 | ||
968 | DEBUG_printf(("1cupsWriteRequestData: Returning %d.\n", status)); | |
969 | return (status); | |
970 | } | |
971 | } | |
972 | ||
973 | DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_CONTINUE."); | |
974 | return (HTTP_STATUS_CONTINUE); | |
975 | } | |
976 | ||
977 | ||
978 | /* | |
979 | * '_cupsConnect()' - Get the default server connection... | |
980 | */ | |
981 | ||
982 | http_t * /* O - HTTP connection */ | |
983 | _cupsConnect(void) | |
984 | { | |
985 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ | |
986 | ||
987 | ||
988 | /* | |
989 | * See if we are connected to the same server... | |
990 | */ | |
991 | ||
992 | if (cg->http) | |
993 | { | |
994 | /* | |
995 | * Compare the connection hostname, port, and encryption settings to | |
996 | * the cached defaults; these were initialized the first time we | |
997 | * connected... | |
998 | */ | |
999 | ||
1000 | if (strcmp(cg->http->hostname, cg->server) || | |
1001 | #ifdef AF_LOCAL | |
1002 | (httpAddrFamily(cg->http->hostaddr) != AF_LOCAL && cg->ipp_port != httpAddrPort(cg->http->hostaddr)) || | |
1003 | #else | |
1004 | cg->ipp_port != httpAddrPort(cg->http->hostaddr) || | |
1005 | #endif /* AF_LOCAL */ | |
1006 | (cg->http->encryption != cg->encryption && | |
1007 | cg->http->encryption == HTTP_ENCRYPTION_NEVER)) | |
1008 | { | |
1009 | /* | |
1010 | * Need to close the current connection because something has changed... | |
1011 | */ | |
1012 | ||
1013 | httpClose(cg->http); | |
1014 | cg->http = NULL; | |
1015 | } | |
1016 | else | |
1017 | { | |
1018 | /* | |
1019 | * Same server, see if the connection is still established... | |
1020 | */ | |
1021 | ||
1022 | char ch; /* Connection check byte */ | |
1023 | ssize_t n; /* Number of bytes */ | |
1024 | ||
1025 | #ifdef WIN32 | |
1026 | if ((n = recv(cg->http->fd, &ch, 1, MSG_PEEK)) == 0 || | |
1027 | (n < 0 && WSAGetLastError() != WSAEWOULDBLOCK)) | |
1028 | #else | |
1029 | if ((n = recv(cg->http->fd, &ch, 1, MSG_PEEK | MSG_DONTWAIT)) == 0 || | |
1030 | (n < 0 && errno != EWOULDBLOCK)) | |
1031 | #endif /* WIN32 */ | |
1032 | { | |
1033 | /* | |
1034 | * Nope, close the connection... | |
1035 | */ | |
1036 | ||
1037 | httpClose(cg->http); | |
1038 | cg->http = NULL; | |
1039 | } | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | /* | |
1044 | * (Re)connect as needed... | |
1045 | */ | |
1046 | ||
1047 | if (!cg->http) | |
1048 | { | |
1049 | if ((cg->http = httpConnect2(cupsServer(), ippPort(), NULL, AF_UNSPEC, | |
1050 | cupsEncryption(), 1, 30000, NULL)) == NULL) | |
1051 | { | |
1052 | if (errno) | |
1053 | _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, NULL, 0); | |
1054 | else | |
1055 | _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, | |
1056 | _("Unable to connect to host."), 1); | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | /* | |
1061 | * Return the cached connection... | |
1062 | */ | |
1063 | ||
1064 | return (cg->http); | |
1065 | } | |
1066 | ||
1067 | ||
1068 | /* | |
1069 | * '_cupsSetError()' - Set the last IPP status code and status-message. | |
1070 | */ | |
1071 | ||
1072 | void | |
1073 | _cupsSetError(ipp_status_t status, /* I - IPP status code */ | |
1074 | const char *message, /* I - status-message value */ | |
1075 | int localize) /* I - Localize the message? */ | |
1076 | { | |
1077 | _cups_globals_t *cg; /* Global data */ | |
1078 | ||
1079 | ||
1080 | if (!message && errno) | |
1081 | { | |
1082 | message = strerror(errno); | |
1083 | localize = 0; | |
1084 | } | |
1085 | ||
1086 | cg = _cupsGlobals(); | |
1087 | cg->last_error = status; | |
1088 | ||
1089 | if (cg->last_status_message) | |
1090 | { | |
1091 | _cupsStrFree(cg->last_status_message); | |
1092 | ||
1093 | cg->last_status_message = NULL; | |
1094 | } | |
1095 | ||
1096 | if (message) | |
1097 | { | |
1098 | if (localize) | |
1099 | { | |
1100 | /* | |
1101 | * Get the message catalog... | |
1102 | */ | |
1103 | ||
1104 | if (!cg->lang_default) | |
1105 | cg->lang_default = cupsLangDefault(); | |
1106 | ||
1107 | cg->last_status_message = _cupsStrAlloc(_cupsLangString(cg->lang_default, | |
1108 | message)); | |
1109 | } | |
1110 | else | |
1111 | cg->last_status_message = _cupsStrAlloc(message); | |
1112 | } | |
1113 | ||
1114 | DEBUG_printf(("4_cupsSetError: last_error=%s, last_status_message=\"%s\"", | |
1115 | ippErrorString(cg->last_error), cg->last_status_message)); | |
1116 | } | |
1117 | ||
1118 | ||
1119 | /* | |
1120 | * '_cupsSetHTTPError()' - Set the last error using the HTTP status. | |
1121 | */ | |
1122 | ||
1123 | void | |
1124 | _cupsSetHTTPError(http_status_t status) /* I - HTTP status code */ | |
1125 | { | |
1126 | switch (status) | |
1127 | { | |
1128 | case HTTP_STATUS_NOT_FOUND : | |
1129 | _cupsSetError(IPP_STATUS_ERROR_NOT_FOUND, httpStatus(status), 0); | |
1130 | break; | |
1131 | ||
1132 | case HTTP_STATUS_UNAUTHORIZED : | |
1133 | _cupsSetError(IPP_STATUS_ERROR_NOT_AUTHENTICATED, httpStatus(status), 0); | |
1134 | break; | |
1135 | ||
1136 | case HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED : | |
1137 | _cupsSetError(IPP_STATUS_ERROR_CUPS_AUTHENTICATION_CANCELED, httpStatus(status), 0); | |
1138 | break; | |
1139 | ||
1140 | case HTTP_STATUS_FORBIDDEN : | |
1141 | _cupsSetError(IPP_STATUS_ERROR_FORBIDDEN, httpStatus(status), 0); | |
1142 | break; | |
1143 | ||
1144 | case HTTP_STATUS_BAD_REQUEST : | |
1145 | _cupsSetError(IPP_STATUS_ERROR_BAD_REQUEST, httpStatus(status), 0); | |
1146 | break; | |
1147 | ||
1148 | case HTTP_STATUS_REQUEST_TOO_LARGE : | |
1149 | _cupsSetError(IPP_STATUS_ERROR_REQUEST_VALUE, httpStatus(status), 0); | |
1150 | break; | |
1151 | ||
1152 | case HTTP_STATUS_NOT_IMPLEMENTED : | |
1153 | _cupsSetError(IPP_STATUS_ERROR_OPERATION_NOT_SUPPORTED, httpStatus(status), 0); | |
1154 | break; | |
1155 | ||
1156 | case HTTP_STATUS_NOT_SUPPORTED : | |
1157 | _cupsSetError(IPP_STATUS_ERROR_VERSION_NOT_SUPPORTED, httpStatus(status), 0); | |
1158 | break; | |
1159 | ||
1160 | case HTTP_STATUS_UPGRADE_REQUIRED : | |
1161 | _cupsSetError(IPP_STATUS_ERROR_CUPS_UPGRADE_REQUIRED, httpStatus(status), 0); | |
1162 | break; | |
1163 | ||
1164 | case HTTP_STATUS_CUPS_PKI_ERROR : | |
1165 | _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI, httpStatus(status), 0); | |
1166 | break; | |
1167 | ||
1168 | case HTTP_STATUS_ERROR : | |
1169 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); | |
1170 | break; | |
1171 | ||
1172 | default : | |
1173 | DEBUG_printf(("4_cupsSetHTTPError: HTTP error %d mapped to " | |
1174 | "IPP_STATUS_ERROR_SERVICE_UNAVAILABLE!", status)); | |
1175 | _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, httpStatus(status), 0); | |
1176 | break; | |
1177 | } | |
1178 | } |