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Commit | Line | Data |
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7a14d768 MS |
1 | /* |
2 | * "$Id$" | |
3 | * | |
4 | * DNS-SD discovery backend for the Common UNIX Printing System (CUPS). | |
5 | * | |
bf3816c7 | 6 | * Copyright 2008-2009 by Apple Inc. |
7a14d768 MS |
7 | * |
8 | * These coded instructions, statements, and computer programs are the | |
9 | * property of Apple Inc. and are protected by Federal copyright | |
10 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
11 | * "LICENSE" which should have been included with this file. If this | |
12 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
13 | * | |
14 | * This file is subject to the Apple OS-Developed Software exception. | |
15 | * | |
16 | * Contents: | |
17 | * | |
18 | * main() - Browse for printers. | |
19 | * browse_callback() - Browse devices. | |
20 | * browse_local_callback() - Browse local devices. | |
21 | * compare_devices() - Compare two devices. | |
1340db2d MS |
22 | * exec_backend() - Execute the backend that corresponds to the |
23 | * resolved service name. | |
7a14d768 MS |
24 | * get_device() - Create or update a device. |
25 | * query_callback() - Process query data. | |
38e73f87 | 26 | * sigterm_handler() - Handle termination signals... |
7a14d768 MS |
27 | * unquote() - Unquote a name string. |
28 | */ | |
29 | ||
30 | /* | |
31 | * Include necessary headers. | |
32 | */ | |
33 | ||
34 | #include "backend-private.h" | |
35 | #include <cups/array.h> | |
36 | #include <dns_sd.h> | |
37 | ||
38 | ||
39 | /* | |
40 | * Device structure... | |
41 | */ | |
42 | ||
43 | typedef enum | |
44 | { | |
45 | CUPS_DEVICE_PRINTER = 0, /* lpd://... */ | |
46 | CUPS_DEVICE_IPP, /* ipp://... */ | |
47 | CUPS_DEVICE_FAX_IPP, /* ipp://... */ | |
48 | CUPS_DEVICE_PDL_DATASTREAM, /* socket://... */ | |
49 | CUPS_DEVICE_RIOUSBPRINT /* riousbprint://... */ | |
50 | } cups_devtype_t; | |
51 | ||
52 | ||
53 | typedef struct | |
54 | { | |
55 | DNSServiceRef ref; /* Service reference for resolve */ | |
56 | char *name, /* Service name */ | |
57 | *domain, /* Domain name */ | |
58 | *fullName, /* Full name */ | |
238c3832 MS |
59 | *make_and_model, /* Make and model from TXT record */ |
60 | *device_id; /* 1284 device ID from TXT record */ | |
7a14d768 | 61 | cups_devtype_t type; /* Device registration type */ |
1f0275e3 MS |
62 | int priority, /* Priority associated with type */ |
63 | cups_shared, /* CUPS shared printer? */ | |
7a14d768 MS |
64 | sent; /* Did we list the device? */ |
65 | } cups_device_t; | |
66 | ||
67 | ||
38e73f87 MS |
68 | /* |
69 | * Local globals... | |
70 | */ | |
71 | ||
72 | static int job_canceled = 0; | |
73 | /* Set to 1 on SIGTERM */ | |
74 | ||
75 | ||
7a14d768 MS |
76 | /* |
77 | * Local functions... | |
78 | */ | |
79 | ||
80 | static void browse_callback(DNSServiceRef sdRef, | |
81 | DNSServiceFlags flags, | |
82 | uint32_t interfaceIndex, | |
83 | DNSServiceErrorType errorCode, | |
84 | const char *serviceName, | |
85 | const char *regtype, | |
86 | const char *replyDomain, void *context); | |
87 | static void browse_local_callback(DNSServiceRef sdRef, | |
88 | DNSServiceFlags flags, | |
89 | uint32_t interfaceIndex, | |
90 | DNSServiceErrorType errorCode, | |
91 | const char *serviceName, | |
92 | const char *regtype, | |
93 | const char *replyDomain, | |
94 | void *context); | |
95 | static int compare_devices(cups_device_t *a, cups_device_t *b); | |
96 | static void exec_backend(char **argv); | |
97 | static cups_device_t *get_device(cups_array_t *devices, | |
98 | const char *serviceName, | |
99 | const char *regtype, | |
100 | const char *replyDomain); | |
101 | static void query_callback(DNSServiceRef sdRef, | |
102 | DNSServiceFlags flags, | |
103 | uint32_t interfaceIndex, | |
104 | DNSServiceErrorType errorCode, | |
105 | const char *fullName, uint16_t rrtype, | |
106 | uint16_t rrclass, uint16_t rdlen, | |
107 | const void *rdata, uint32_t ttl, | |
108 | void *context); | |
38e73f87 | 109 | static void sigterm_handler(int sig); |
7a14d768 MS |
110 | static void unquote(char *dst, const char *src, size_t dstsize); |
111 | ||
112 | ||
113 | /* | |
114 | * 'main()' - Browse for printers. | |
115 | */ | |
116 | ||
117 | int /* O - Exit status */ | |
118 | main(int argc, /* I - Number of command-line args */ | |
119 | char *argv[]) /* I - Command-line arguments */ | |
120 | { | |
c5571a1d | 121 | const char *name; /* Backend name */ |
7a14d768 MS |
122 | DNSServiceRef main_ref, /* Main service reference */ |
123 | fax_ipp_ref, /* IPP fax service reference */ | |
124 | ipp_ref, /* IPP service reference */ | |
125 | ipp_tls_ref, /* IPP w/TLS service reference */ | |
126 | local_fax_ipp_ref, /* Local IPP fax service reference */ | |
127 | local_ipp_ref, /* Local IPP service reference */ | |
128 | local_ipp_tls_ref, /* Local IPP w/TLS service reference */ | |
129 | local_printer_ref, /* Local LPD service reference */ | |
130 | pdl_datastream_ref, /* AppSocket service reference */ | |
131 | printer_ref, /* LPD service reference */ | |
132 | riousbprint_ref; /* Remote IO service reference */ | |
133 | int fd; /* Main file descriptor */ | |
134 | fd_set input; /* Input set for select() */ | |
135 | struct timeval timeout; /* Timeout for select() */ | |
136 | cups_array_t *devices; /* Device array */ | |
137 | cups_device_t *device; /* Current device */ | |
bf3816c7 | 138 | char uriName[1024]; /* Unquoted fullName for URI */ |
38e73f87 MS |
139 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
140 | struct sigaction action; /* Actions for POSIX signals */ | |
141 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
7a14d768 MS |
142 | |
143 | ||
144 | /* | |
38e73f87 | 145 | * Don't buffer stderr, and catch SIGTERM... |
7a14d768 MS |
146 | */ |
147 | ||
148 | setbuf(stderr, NULL); | |
149 | ||
38e73f87 MS |
150 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ |
151 | sigset(SIGTERM, sigterm_handler); | |
152 | #elif defined(HAVE_SIGACTION) | |
153 | memset(&action, 0, sizeof(action)); | |
154 | ||
155 | sigemptyset(&action.sa_mask); | |
ee6ddad2 MS |
156 | action.sa_handler = sigterm_handler; |
157 | sigaction(SIGTERM, &action, NULL); | |
38e73f87 MS |
158 | #else |
159 | signal(SIGTERM, sigterm_handler); | |
160 | #endif /* HAVE_SIGSET */ | |
161 | ||
162 | /* | |
163 | * Check command-line... | |
164 | */ | |
165 | ||
7a14d768 MS |
166 | if (argc >= 6) |
167 | exec_backend(argv); | |
168 | else if (argc != 1) | |
169 | { | |
0837b7e8 MS |
170 | _cupsLangPrintf(stderr, |
171 | _("Usage: %s job-id user title copies options [file]"), | |
172 | argv[0]); | |
7a14d768 MS |
173 | return (1); |
174 | } | |
175 | ||
c5571a1d MS |
176 | /* |
177 | * Only do discovery when run as "dnssd"... | |
178 | */ | |
179 | ||
180 | if ((name = strrchr(argv[0], '/')) != NULL) | |
181 | name ++; | |
182 | else | |
183 | name = argv[0]; | |
184 | ||
185 | if (strcmp(name, "dnssd")) | |
186 | return (0); | |
187 | ||
7a14d768 MS |
188 | /* |
189 | * Create an array to track devices... | |
190 | */ | |
191 | ||
192 | devices = cupsArrayNew((cups_array_func_t)compare_devices, NULL); | |
193 | ||
194 | /* | |
195 | * Browse for different kinds of printers... | |
196 | */ | |
197 | ||
198 | if (DNSServiceCreateConnection(&main_ref) != kDNSServiceErr_NoError) | |
199 | { | |
200 | perror("ERROR: Unable to create service connection"); | |
201 | return (1); | |
202 | } | |
203 | ||
204 | fd = DNSServiceRefSockFD(main_ref); | |
205 | ||
206 | fax_ipp_ref = main_ref; | |
207 | DNSServiceBrowse(&fax_ipp_ref, kDNSServiceFlagsShareConnection, 0, | |
208 | "_fax-ipp._tcp", NULL, browse_callback, devices); | |
209 | ||
210 | ipp_ref = main_ref; | |
211 | DNSServiceBrowse(&ipp_ref, kDNSServiceFlagsShareConnection, 0, | |
212 | "_ipp._tcp", NULL, browse_callback, devices); | |
213 | ||
214 | ipp_tls_ref = main_ref; | |
215 | DNSServiceBrowse(&ipp_tls_ref, kDNSServiceFlagsShareConnection, 0, | |
216 | "_ipp-tls._tcp", NULL, browse_callback, devices); | |
217 | ||
218 | local_fax_ipp_ref = main_ref; | |
219 | DNSServiceBrowse(&local_fax_ipp_ref, kDNSServiceFlagsShareConnection, | |
220 | kDNSServiceInterfaceIndexLocalOnly, | |
221 | "_fax-ipp._tcp", NULL, browse_local_callback, devices); | |
222 | ||
223 | local_ipp_ref = main_ref; | |
224 | DNSServiceBrowse(&local_ipp_ref, kDNSServiceFlagsShareConnection, | |
225 | kDNSServiceInterfaceIndexLocalOnly, | |
226 | "_ipp._tcp", NULL, browse_local_callback, devices); | |
227 | ||
228 | local_ipp_tls_ref = main_ref; | |
229 | DNSServiceBrowse(&local_ipp_tls_ref, kDNSServiceFlagsShareConnection, | |
230 | kDNSServiceInterfaceIndexLocalOnly, | |
231 | "_ipp-tls._tcp", NULL, browse_local_callback, devices); | |
232 | ||
233 | local_printer_ref = main_ref; | |
234 | DNSServiceBrowse(&local_printer_ref, kDNSServiceFlagsShareConnection, | |
235 | kDNSServiceInterfaceIndexLocalOnly, | |
236 | "_printer._tcp", NULL, browse_local_callback, devices); | |
237 | ||
238 | pdl_datastream_ref = main_ref; | |
239 | DNSServiceBrowse(&pdl_datastream_ref, kDNSServiceFlagsShareConnection, 0, | |
240 | "_pdl-datastream._tcp", NULL, browse_callback, devices); | |
241 | ||
242 | printer_ref = main_ref; | |
243 | DNSServiceBrowse(&printer_ref, kDNSServiceFlagsShareConnection, 0, | |
244 | "_printer._tcp", NULL, browse_callback, devices); | |
245 | ||
246 | riousbprint_ref = main_ref; | |
247 | DNSServiceBrowse(&riousbprint_ref, kDNSServiceFlagsShareConnection, 0, | |
248 | "_riousbprint._tcp", NULL, browse_callback, devices); | |
249 | ||
250 | /* | |
251 | * Loop until we are killed... | |
252 | */ | |
253 | ||
38e73f87 | 254 | while (!job_canceled) |
7a14d768 MS |
255 | { |
256 | FD_ZERO(&input); | |
257 | FD_SET(fd, &input); | |
258 | ||
259 | timeout.tv_sec = 1; | |
260 | timeout.tv_usec = 0; | |
261 | ||
262 | if (select(fd + 1, &input, NULL, NULL, &timeout) < 0) | |
263 | continue; | |
264 | ||
265 | if (FD_ISSET(fd, &input)) | |
266 | { | |
267 | /* | |
268 | * Process results of our browsing... | |
269 | */ | |
270 | ||
271 | DNSServiceProcessResult(main_ref); | |
272 | } | |
273 | else | |
274 | { | |
275 | /* | |
276 | * Announce any devices we've found... | |
277 | */ | |
278 | ||
58dc1933 | 279 | DNSServiceErrorType status; /* DNS query status */ |
1f0275e3 | 280 | cups_device_t *best; /* Best matching device */ |
7a14d768 | 281 | char device_uri[1024]; /* Device URI */ |
5eb9da71 | 282 | int count; /* Number of queries */ |
7a14d768 MS |
283 | |
284 | ||
1f0275e3 MS |
285 | for (device = (cups_device_t *)cupsArrayFirst(devices), |
286 | best = NULL, count = 0; | |
7a14d768 MS |
287 | device; |
288 | device = (cups_device_t *)cupsArrayNext(devices)) | |
289 | if (!device->ref && !device->sent) | |
290 | { | |
291 | /* | |
292 | * Found the device, now get the TXT record(s) for it... | |
293 | */ | |
294 | ||
5eb9da71 MS |
295 | if (count < 10) |
296 | { | |
297 | device->ref = main_ref; | |
298 | ||
299 | fprintf(stderr, "DEBUG: Querying \"%s\"...\n", device->fullName); | |
300 | ||
58dc1933 MS |
301 | status = DNSServiceQueryRecord(&(device->ref), |
302 | kDNSServiceFlagsShareConnection, | |
303 | 0, device->fullName, | |
304 | kDNSServiceType_TXT, | |
305 | kDNSServiceClass_IN, query_callback, | |
306 | devices); | |
307 | if (status != kDNSServiceErr_NoError) | |
308 | { | |
5eb9da71 | 309 | fputs("ERROR: Unable to query for TXT records!\n", stderr); |
58dc1933 MS |
310 | fprintf(stderr, "DEBUG: DNSServiceQueryRecord returned %d\n", |
311 | status); | |
312 | } | |
313 | else | |
5eb9da71 MS |
314 | count ++; |
315 | } | |
7a14d768 MS |
316 | } |
317 | else if (!device->sent) | |
318 | { | |
319 | /* | |
320 | * Got the TXT records, now report the device... | |
321 | */ | |
322 | ||
323 | DNSServiceRefDeallocate(device->ref); | |
324 | device->ref = 0; | |
325 | ||
1f0275e3 MS |
326 | if (!best) |
327 | best = device; | |
328 | else if (strcasecmp(best->name, device->name) || | |
329 | strcasecmp(best->domain, device->domain)) | |
330 | { | |
bf3816c7 MS |
331 | unquote(uriName, best->fullName, sizeof(uriName)); |
332 | ||
1f0275e3 | 333 | httpAssembleURI(HTTP_URI_CODING_ALL, device_uri, sizeof(device_uri), |
38e73f87 | 334 | "dnssd", NULL, uriName, 0, |
1f0275e3 MS |
335 | best->cups_shared ? "/cups" : "/"); |
336 | ||
749b1e90 | 337 | cupsBackendReport("network", device_uri, best->make_and_model, |
238c3832 | 338 | best->name, best->device_id, NULL); |
1f0275e3 MS |
339 | best->sent = 1; |
340 | best = device; | |
341 | } | |
342 | else if (best->priority > device->priority || | |
343 | (best->priority == device->priority && | |
344 | best->type < device->type)) | |
345 | { | |
346 | best->sent = 1; | |
347 | best = device; | |
348 | } | |
349 | else | |
350 | device->sent = 1; | |
351 | } | |
7a14d768 | 352 | |
1f0275e3 MS |
353 | if (best) |
354 | { | |
bf3816c7 MS |
355 | unquote(uriName, best->fullName, sizeof(uriName)); |
356 | ||
1f0275e3 | 357 | httpAssembleURI(HTTP_URI_CODING_ALL, device_uri, sizeof(device_uri), |
38e73f87 | 358 | "dnssd", NULL, uriName, 0, |
1f0275e3 | 359 | best->cups_shared ? "/cups" : "/"); |
7a14d768 | 360 | |
749b1e90 | 361 | cupsBackendReport("network", device_uri, best->make_and_model, |
238c3832 | 362 | best->name, best->device_id, NULL); |
1f0275e3 MS |
363 | best->sent = 1; |
364 | } | |
7a14d768 MS |
365 | } |
366 | } | |
38e73f87 MS |
367 | |
368 | return (CUPS_BACKEND_OK); | |
7a14d768 MS |
369 | } |
370 | ||
371 | ||
372 | /* | |
373 | * 'browse_callback()' - Browse devices. | |
374 | */ | |
375 | ||
376 | static void | |
377 | browse_callback( | |
378 | DNSServiceRef sdRef, /* I - Service reference */ | |
379 | DNSServiceFlags flags, /* I - Option flags */ | |
380 | uint32_t interfaceIndex, /* I - Interface number */ | |
381 | DNSServiceErrorType errorCode, /* I - Error, if any */ | |
382 | const char *serviceName, /* I - Name of service/device */ | |
383 | const char *regtype, /* I - Type of service */ | |
384 | const char *replyDomain, /* I - Service domain */ | |
385 | void *context) /* I - Devices array */ | |
386 | { | |
387 | fprintf(stderr, "DEBUG2: browse_callback(sdRef=%p, flags=%x, " | |
388 | "interfaceIndex=%d, errorCode=%d, serviceName=\"%s\", " | |
389 | "regtype=\"%s\", replyDomain=\"%s\", context=%p)\n", | |
390 | sdRef, flags, interfaceIndex, errorCode, | |
391 | serviceName ? serviceName : "(null)", | |
392 | regtype ? regtype : "(null)", | |
393 | replyDomain ? replyDomain : "(null)", | |
394 | context); | |
395 | ||
396 | /* | |
397 | * Only process "add" data... | |
398 | */ | |
399 | ||
400 | if (errorCode != kDNSServiceErr_NoError || !(flags & kDNSServiceFlagsAdd)) | |
401 | return; | |
402 | ||
403 | /* | |
404 | * Get the device... | |
405 | */ | |
406 | ||
407 | get_device((cups_array_t *)context, serviceName, regtype, replyDomain); | |
408 | } | |
409 | ||
410 | ||
411 | /* | |
412 | * 'browse_local_callback()' - Browse local devices. | |
413 | */ | |
414 | ||
415 | static void | |
416 | browse_local_callback( | |
417 | DNSServiceRef sdRef, /* I - Service reference */ | |
418 | DNSServiceFlags flags, /* I - Option flags */ | |
419 | uint32_t interfaceIndex, /* I - Interface number */ | |
420 | DNSServiceErrorType errorCode, /* I - Error, if any */ | |
421 | const char *serviceName, /* I - Name of service/device */ | |
422 | const char *regtype, /* I - Type of service */ | |
423 | const char *replyDomain, /* I - Service domain */ | |
424 | void *context) /* I - Devices array */ | |
425 | { | |
426 | cups_device_t *device; /* Device */ | |
427 | ||
428 | ||
429 | fprintf(stderr, "DEBUG2: browse_local_callback(sdRef=%p, flags=%x, " | |
430 | "interfaceIndex=%d, errorCode=%d, serviceName=\"%s\", " | |
431 | "regtype=\"%s\", replyDomain=\"%s\", context=%p)\n", | |
432 | sdRef, flags, interfaceIndex, errorCode, | |
433 | serviceName ? serviceName : "(null)", | |
434 | regtype ? regtype : "(null)", | |
435 | replyDomain ? replyDomain : "(null)", | |
436 | context); | |
437 | ||
438 | /* | |
439 | * Only process "add" data... | |
440 | */ | |
441 | ||
442 | if (errorCode != kDNSServiceErr_NoError || !(flags & kDNSServiceFlagsAdd)) | |
443 | return; | |
444 | ||
445 | /* | |
446 | * Get the device... | |
447 | */ | |
448 | ||
449 | device = get_device((cups_array_t *)context, serviceName, regtype, | |
450 | replyDomain); | |
451 | ||
452 | /* | |
453 | * Hide locally-registered devices... | |
454 | */ | |
455 | ||
456 | fprintf(stderr, "DEBUG: Hiding local printer \"%s\"...\n", | |
457 | device->fullName); | |
458 | device->sent = 1; | |
459 | } | |
460 | ||
461 | ||
462 | /* | |
463 | * 'compare_devices()' - Compare two devices. | |
464 | */ | |
465 | ||
466 | static int /* O - Result of comparison */ | |
467 | compare_devices(cups_device_t *a, /* I - First device */ | |
468 | cups_device_t *b) /* I - Second device */ | |
469 | { | |
38e73f87 | 470 | return (strcmp(a->name, b->name)); |
7a14d768 MS |
471 | } |
472 | ||
473 | ||
474 | /* | |
475 | * 'exec_backend()' - Execute the backend that corresponds to the | |
476 | * resolved service name. | |
477 | */ | |
478 | ||
479 | static void | |
480 | exec_backend(char **argv) /* I - Command-line arguments */ | |
481 | { | |
482 | const char *resolved_uri, /* Resolved device URI */ | |
483 | *cups_serverbin; /* Location of programs */ | |
484 | char scheme[1024], /* Scheme from URI */ | |
485 | *ptr, /* Pointer into scheme */ | |
486 | filename[1024]; /* Backend filename */ | |
487 | ||
488 | ||
489 | /* | |
490 | * Resolve the device URI... | |
491 | */ | |
492 | ||
e07d4801 MS |
493 | job_canceled = -1; |
494 | ||
1f0275e3 | 495 | if ((resolved_uri = cupsBackendDeviceURI(argv)) == NULL) |
e07d4801 | 496 | exit(CUPS_BACKEND_FAILED); |
7a14d768 MS |
497 | |
498 | /* | |
499 | * Extract the scheme from the URI... | |
500 | */ | |
501 | ||
502 | strlcpy(scheme, resolved_uri, sizeof(scheme)); | |
503 | if ((ptr = strchr(scheme, ':')) != NULL) | |
504 | *ptr = '\0'; | |
505 | ||
506 | /* | |
507 | * Get the filename of the backend... | |
508 | */ | |
509 | ||
510 | if ((cups_serverbin = getenv("CUPS_SERVERBIN")) == NULL) | |
511 | cups_serverbin = CUPS_SERVERBIN; | |
512 | ||
513 | snprintf(filename, sizeof(filename), "%s/backend/%s", cups_serverbin, scheme); | |
514 | ||
515 | /* | |
38e73f87 | 516 | * Overwrite the device URI and run the new backend... |
7a14d768 MS |
517 | */ |
518 | ||
519 | setenv("DEVICE_URI", resolved_uri, 1); | |
520 | ||
521 | argv[0] = (char *)resolved_uri; | |
522 | ||
523 | fprintf(stderr, "DEBUG: Executing backend \"%s\"...\n", filename); | |
524 | ||
525 | execv(filename, argv); | |
526 | ||
527 | fprintf(stderr, "ERROR: Unable to execute backend \"%s\": %s\n", filename, | |
528 | strerror(errno)); | |
529 | exit(CUPS_BACKEND_STOP); | |
530 | } | |
531 | ||
532 | ||
533 | /* | |
534 | * 'get_device()' - Create or update a device. | |
535 | */ | |
536 | ||
537 | static cups_device_t * /* O - Device */ | |
538 | get_device(cups_array_t *devices, /* I - Device array */ | |
539 | const char *serviceName, /* I - Name of service/device */ | |
540 | const char *regtype, /* I - Type of service */ | |
541 | const char *replyDomain) /* I - Service domain */ | |
542 | { | |
543 | cups_device_t key, /* Search key */ | |
544 | *device; /* Device */ | |
58dc1933 MS |
545 | char fullName[kDNSServiceMaxDomainName]; |
546 | /* Full name for query */ | |
7a14d768 MS |
547 | |
548 | ||
549 | /* | |
550 | * See if this is a new device... | |
551 | */ | |
552 | ||
38e73f87 | 553 | key.name = (char *)serviceName; |
7a14d768 MS |
554 | |
555 | if (!strcmp(regtype, "_ipp._tcp.") || | |
556 | !strcmp(regtype, "_ipp-tls._tcp.")) | |
557 | key.type = CUPS_DEVICE_IPP; | |
558 | else if (!strcmp(regtype, "_fax-ipp._tcp.")) | |
559 | key.type = CUPS_DEVICE_FAX_IPP; | |
560 | else if (!strcmp(regtype, "_printer._tcp.")) | |
561 | key.type = CUPS_DEVICE_PRINTER; | |
562 | else if (!strcmp(regtype, "_pdl-datastream._tcp.")) | |
563 | key.type = CUPS_DEVICE_PDL_DATASTREAM; | |
564 | else | |
565 | key.type = CUPS_DEVICE_RIOUSBPRINT; | |
566 | ||
1f0275e3 MS |
567 | for (device = cupsArrayFind(devices, &key); |
568 | device; | |
569 | device = cupsArrayNext(devices)) | |
38e73f87 | 570 | if (strcasecmp(device->name, key.name)) |
1f0275e3 MS |
571 | break; |
572 | else if (device->type == key.type) | |
38e73f87 MS |
573 | { |
574 | if (!strcasecmp(device->domain, "local.") && | |
575 | strcasecmp(device->domain, replyDomain)) | |
576 | { | |
577 | /* | |
578 | * Update the .local listing to use the "global" domain name instead. | |
579 | * The backend will try local lookups first, then the global domain name. | |
580 | */ | |
581 | ||
582 | free(device->domain); | |
583 | device->domain = strdup(replyDomain); | |
584 | ||
585 | DNSServiceConstructFullName(fullName, device->name, regtype, | |
586 | replyDomain); | |
587 | free(device->fullName); | |
588 | device->fullName = strdup(fullName); | |
589 | } | |
590 | ||
1f0275e3 | 591 | return (device); |
38e73f87 | 592 | } |
7a14d768 | 593 | |
1f0275e3 MS |
594 | /* |
595 | * Yes, add the device... | |
596 | */ | |
7a14d768 | 597 | |
1f0275e3 MS |
598 | fprintf(stderr, "DEBUG: Found \"%s.%s%s\"...\n", serviceName, regtype, |
599 | replyDomain); | |
7a14d768 | 600 | |
1f0275e3 MS |
601 | device = calloc(sizeof(cups_device_t), 1); |
602 | device->name = strdup(serviceName); | |
603 | device->domain = strdup(replyDomain); | |
604 | device->type = key.type; | |
605 | device->priority = 50; | |
7a14d768 | 606 | |
1f0275e3 | 607 | cupsArrayAdd(devices, device); |
7a14d768 MS |
608 | |
609 | /* | |
1f0275e3 | 610 | * Set the "full name" of this service, which is used for queries... |
7a14d768 MS |
611 | */ |
612 | ||
58dc1933 | 613 | DNSServiceConstructFullName(fullName, serviceName, regtype, replyDomain); |
7a14d768 MS |
614 | device->fullName = strdup(fullName); |
615 | ||
616 | return (device); | |
617 | } | |
618 | ||
619 | ||
620 | /* | |
621 | * 'query_callback()' - Process query data. | |
622 | */ | |
623 | ||
624 | static void | |
625 | query_callback( | |
626 | DNSServiceRef sdRef, /* I - Service reference */ | |
627 | DNSServiceFlags flags, /* I - Data flags */ | |
628 | uint32_t interfaceIndex, /* I - Interface */ | |
629 | DNSServiceErrorType errorCode, /* I - Error, if any */ | |
630 | const char *fullName, /* I - Full service name */ | |
631 | uint16_t rrtype, /* I - Record type */ | |
632 | uint16_t rrclass, /* I - Record class */ | |
633 | uint16_t rdlen, /* I - Length of record data */ | |
634 | const void *rdata, /* I - Record data */ | |
635 | uint32_t ttl, /* I - Time-to-live */ | |
636 | void *context) /* I - Devices array */ | |
637 | { | |
638 | cups_array_t *devices; /* Device array */ | |
639 | char name[1024], /* Service name */ | |
238c3832 MS |
640 | *ptr; /* Pointer into string */ |
641 | cups_device_t dkey, /* Search key */ | |
7a14d768 MS |
642 | *device; /* Device */ |
643 | ||
644 | ||
645 | fprintf(stderr, "DEBUG2: query_callback(sdRef=%p, flags=%x, " | |
646 | "interfaceIndex=%d, errorCode=%d, fullName=\"%s\", " | |
647 | "rrtype=%u, rrclass=%u, rdlen=%u, rdata=%p, ttl=%u, " | |
648 | "context=%p)\n", | |
649 | sdRef, flags, interfaceIndex, errorCode, | |
650 | fullName ? fullName : "(null)", rrtype, rrclass, rdlen, rdata, ttl, | |
651 | context); | |
652 | ||
653 | /* | |
654 | * Only process "add" data... | |
655 | */ | |
656 | ||
657 | if (errorCode != kDNSServiceErr_NoError || !(flags & kDNSServiceFlagsAdd)) | |
658 | return; | |
659 | ||
660 | /* | |
661 | * Lookup the service in the devices array. | |
662 | */ | |
663 | ||
238c3832 MS |
664 | devices = (cups_array_t *)context; |
665 | dkey.name = name; | |
7a14d768 MS |
666 | |
667 | unquote(name, fullName, sizeof(name)); | |
668 | ||
238c3832 MS |
669 | if ((dkey.domain = strstr(name, "._tcp.")) != NULL) |
670 | dkey.domain += 6; | |
7a14d768 | 671 | else |
238c3832 | 672 | dkey.domain = (char *)"local."; |
7a14d768 MS |
673 | |
674 | if ((ptr = strstr(name, "._")) != NULL) | |
675 | *ptr = '\0'; | |
676 | ||
1f0275e3 MS |
677 | if (strstr(fullName, "_ipp._tcp.") || |
678 | strstr(fullName, "_ipp-tls._tcp.")) | |
238c3832 | 679 | dkey.type = CUPS_DEVICE_IPP; |
1f0275e3 | 680 | else if (strstr(fullName, "_fax-ipp._tcp.")) |
238c3832 | 681 | dkey.type = CUPS_DEVICE_FAX_IPP; |
1f0275e3 | 682 | else if (strstr(fullName, "_printer._tcp.")) |
238c3832 | 683 | dkey.type = CUPS_DEVICE_PRINTER; |
1f0275e3 | 684 | else if (strstr(fullName, "_pdl-datastream._tcp.")) |
238c3832 | 685 | dkey.type = CUPS_DEVICE_PDL_DATASTREAM; |
1f0275e3 | 686 | else |
238c3832 | 687 | dkey.type = CUPS_DEVICE_RIOUSBPRINT; |
1f0275e3 | 688 | |
238c3832 | 689 | for (device = cupsArrayFind(devices, &dkey); |
1f0275e3 MS |
690 | device; |
691 | device = cupsArrayNext(devices)) | |
7a14d768 | 692 | { |
238c3832 MS |
693 | if (strcasecmp(device->name, dkey.name) || |
694 | strcasecmp(device->domain, dkey.domain)) | |
1f0275e3 MS |
695 | { |
696 | device = NULL; | |
697 | break; | |
698 | } | |
238c3832 | 699 | else if (device->type == dkey.type) |
1f0275e3 MS |
700 | { |
701 | /* | |
702 | * Found it, pull out the priority and make and model from the TXT | |
703 | * record and save it... | |
704 | */ | |
7a14d768 | 705 | |
238c3832 MS |
706 | const uint8_t *data, /* Pointer into data */ |
707 | *datanext, /* Next key/value pair */ | |
708 | *dataend; /* End of entire TXT record */ | |
709 | uint8_t datalen; /* Length of current key/value pair */ | |
710 | char key[256], /* Key string */ | |
711 | value[256], /* Value string */ | |
712 | make_and_model[512], | |
713 | /* Manufacturer and model */ | |
714 | model[256], /* Model */ | |
715 | device_id[2048];/* 1284 device ID */ | |
7a14d768 MS |
716 | |
717 | ||
238c3832 MS |
718 | device_id[0] = '\0'; |
719 | make_and_model[0] = '\0'; | |
7a14d768 | 720 | |
238c3832 MS |
721 | strcpy(model, "Unknown"); |
722 | ||
723 | for (data = rdata, dataend = data + rdlen; | |
724 | data < dataend; | |
725 | data = datanext) | |
1f0275e3 | 726 | { |
238c3832 MS |
727 | /* |
728 | * Read a key/value pair starting with an 8-bit length. Since the | |
729 | * length is 8 bits and the size of the key/value buffers is 256, we | |
730 | * don't need to check for overflow... | |
731 | */ | |
7a14d768 | 732 | |
238c3832 | 733 | datalen = *data++; |
7a14d768 | 734 | |
238c3832 MS |
735 | if (!datalen || (data + datalen) >= dataend) |
736 | break; | |
1f0275e3 | 737 | |
238c3832 | 738 | datanext = data + datalen; |
1f0275e3 | 739 | |
238c3832 MS |
740 | for (ptr = key; data < datanext && *data != '='; data ++) |
741 | *ptr++ = *data; | |
742 | *ptr = '\0'; | |
743 | ||
744 | if (data < datanext && *data == '=') | |
1f0275e3 | 745 | { |
238c3832 | 746 | data ++; |
1f0275e3 | 747 | |
238c3832 MS |
748 | if (data < datanext) |
749 | memcpy(value, data, datanext - data); | |
750 | value[datanext - data] = '\0'; | |
1f0275e3 MS |
751 | } |
752 | else | |
238c3832 MS |
753 | continue; |
754 | ||
755 | if (!strncasecmp(key, "usb_", 4)) | |
1f0275e3 | 756 | { |
238c3832 MS |
757 | /* |
758 | * Add USB device ID information... | |
759 | */ | |
7a14d768 | 760 | |
238c3832 MS |
761 | ptr = device_id + strlen(device_id); |
762 | snprintf(ptr, sizeof(device_id) - (ptr - device_id), "%s:%s;", | |
763 | key + 4, value); | |
764 | } | |
765 | ||
766 | if (!strcasecmp(key, "usb_MFG") || !strcasecmp(key, "usb_MANU") || | |
767 | !strcasecmp(key, "usb_MANUFACTURER")) | |
768 | strcpy(make_and_model, value); | |
769 | else if (!strcasecmp(key, "usb_MDL") || !strcasecmp(key, "usb_MODEL")) | |
770 | strcpy(model, value); | |
771 | else if (!strcasecmp(key, "product") && !strstr(value, "Ghostscript")) | |
1f0275e3 | 772 | { |
238c3832 | 773 | if (value[0] == '(') |
1f0275e3 | 774 | { |
238c3832 MS |
775 | /* |
776 | * Strip parenthesis... | |
777 | */ | |
1f0275e3 | 778 | |
238c3832 | 779 | if ((ptr = value + strlen(value) - 1) > value && *ptr == ')') |
1f0275e3 | 780 | *ptr = '\0'; |
238c3832 MS |
781 | |
782 | strcpy(model, value + 1); | |
1f0275e3 MS |
783 | } |
784 | else | |
238c3832 MS |
785 | strcpy(model, value); |
786 | } | |
787 | else if (!strcasecmp(key, "ty")) | |
788 | { | |
789 | strcpy(model, value); | |
790 | ||
791 | if ((ptr = strchr(model, ',')) != NULL) | |
792 | *ptr = '\0'; | |
7a14d768 | 793 | } |
238c3832 MS |
794 | else if (!strcasecmp(key, "priority")) |
795 | device->priority = atoi(value); | |
796 | else if ((device->type == CUPS_DEVICE_IPP || | |
797 | device->type == CUPS_DEVICE_PRINTER) && | |
798 | !strcasecmp(key, "printer-type")) | |
799 | { | |
800 | /* | |
801 | * This is a CUPS printer! | |
802 | */ | |
803 | ||
804 | device->cups_shared = 1; | |
805 | ||
806 | if (device->type == CUPS_DEVICE_PRINTER) | |
807 | device->sent = 1; | |
808 | } | |
809 | } | |
810 | ||
811 | if (device->device_id) | |
812 | free(device->device_id); | |
813 | ||
814 | if (!device_id[0] && strcmp(model, "Unknown")) | |
815 | { | |
816 | if (make_and_model[0]) | |
817 | snprintf(device_id, sizeof(device_id), "MFG:%s;MDL:%s;", | |
818 | make_and_model, model); | |
819 | else if (!strncasecmp(model, "designjet ", 10)) | |
820 | snprintf(device_id, sizeof(device_id), "MFG:HP;MDL:%s", model + 10); | |
821 | else if (!strncasecmp(model, "stylus ", 7)) | |
822 | snprintf(device_id, sizeof(device_id), "MFG:EPSON;MDL:%s", model + 7); | |
823 | else if ((ptr = strchr(model, ' ')) != NULL) | |
824 | { | |
825 | /* | |
826 | * Assume the first word is the make... | |
827 | */ | |
828 | ||
829 | memcpy(make_and_model, model, ptr - model); | |
830 | make_and_model[ptr - model] = '\0'; | |
831 | ||
832 | snprintf(device_id, sizeof(device_id), "MFG:%s;MDL:%s", | |
833 | make_and_model, ptr + 1); | |
834 | } | |
7a14d768 | 835 | } |
238c3832 MS |
836 | |
837 | if (device_id[0]) | |
838 | device->device_id = strdup(device_id); | |
1f0275e3 | 839 | else |
238c3832 | 840 | device->device_id = NULL; |
7a14d768 | 841 | |
1f0275e3 MS |
842 | if (device->make_and_model) |
843 | free(device->make_and_model); | |
7a14d768 | 844 | |
1f0275e3 MS |
845 | if (make_and_model[0]) |
846 | { | |
847 | strlcat(make_and_model, " ", sizeof(make_and_model)); | |
848 | strlcat(make_and_model, model, sizeof(make_and_model)); | |
238c3832 | 849 | |
1f0275e3 MS |
850 | device->make_and_model = strdup(make_and_model); |
851 | } | |
852 | else | |
853 | device->make_and_model = strdup(model); | |
1f0275e3 | 854 | break; |
7a14d768 MS |
855 | } |
856 | } | |
1f0275e3 MS |
857 | |
858 | if (!device) | |
7a14d768 MS |
859 | fprintf(stderr, "DEBUG: Ignoring TXT record for \"%s\"...\n", fullName); |
860 | } | |
861 | ||
862 | ||
38e73f87 MS |
863 | /* |
864 | * 'sigterm_handler()' - Handle termination signals... | |
865 | */ | |
866 | ||
867 | static void | |
868 | sigterm_handler(int sig) /* I - Signal number (unused) */ | |
869 | { | |
e07d4801 MS |
870 | if (job_canceled) |
871 | exit(CUPS_BACKEND_OK); | |
872 | else | |
873 | job_canceled = 1; | |
38e73f87 MS |
874 | } |
875 | ||
876 | ||
7a14d768 MS |
877 | /* |
878 | * 'unquote()' - Unquote a name string. | |
879 | */ | |
880 | ||
881 | static void | |
882 | unquote(char *dst, /* I - Destination buffer */ | |
883 | const char *src, /* I - Source string */ | |
884 | size_t dstsize) /* I - Size of destination buffer */ | |
885 | { | |
886 | char *dstend = dst + dstsize - 1; /* End of destination buffer */ | |
887 | ||
888 | ||
889 | while (*src && dst < dstend) | |
890 | { | |
891 | if (*src == '\\') | |
892 | { | |
893 | src ++; | |
894 | if (isdigit(src[0] & 255) && isdigit(src[1] & 255) && | |
895 | isdigit(src[2] & 255)) | |
896 | { | |
897 | *dst++ = ((((src[0] - '0') * 10) + src[1] - '0') * 10) + src[2] - '0'; | |
898 | src += 3; | |
899 | } | |
900 | else | |
901 | *dst++ = *src++; | |
902 | } | |
903 | else | |
904 | *dst++ = *src ++; | |
905 | } | |
906 | ||
907 | *dst = '\0'; | |
908 | } | |
909 | ||
910 | ||
911 | /* | |
912 | * End of "$Id$". | |
913 | */ |