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Commit | Line | Data |
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7a14d768 MS |
1 | /* |
2 | * "$Id$" | |
3 | * | |
0268488e | 4 | * DNS-SD discovery backend for CUPS. |
7a14d768 | 5 | * |
3e7fe0ca | 6 | * Copyright 2008-2012 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 | * | |
f3c17241 MS |
18 | * main() - Browse for printers. |
19 | * browse_callback() - Browse devices. | |
7a14d768 | 20 | * browse_local_callback() - Browse local devices. |
f3c17241 MS |
21 | * client_callback() - Avahi client callback function. |
22 | * compare_devices() - Compare two devices. | |
23 | * exec_backend() - Execute the backend that corresponds to the | |
24 | * resolved service name. | |
25 | * device_type() - Get DNS-SD type enumeration from string. | |
26 | * get_device() - Create or update a device. | |
27 | * query_callback() - Process query data. | |
28 | * find_device() - Find a device from its name and domain. | |
29 | * sigterm_handler() - Handle termination signals. | |
30 | * unquote() - Unquote a name string. | |
7a14d768 MS |
31 | */ |
32 | ||
33 | /* | |
34 | * Include necessary headers. | |
35 | */ | |
36 | ||
37 | #include "backend-private.h" | |
38 | #include <cups/array.h> | |
f3c17241 MS |
39 | #ifdef HAVE_DNSSD |
40 | # include <dns_sd.h> | |
41 | #endif /* HAVE_DNSSD */ | |
42 | #ifdef HAVE_AVAHI | |
43 | # include <avahi-client/client.h> | |
44 | # include <avahi-client/lookup.h> | |
45 | # include <avahi-common/simple-watch.h> | |
46 | # include <avahi-common/domain.h> | |
47 | # include <avahi-common/error.h> | |
48 | # include <avahi-common/malloc.h> | |
49 | #define kDNSServiceMaxDomainName AVAHI_DOMAIN_NAME_MAX | |
50 | #endif /* HAVE_AVAHI */ | |
7a14d768 MS |
51 | |
52 | ||
53 | /* | |
54 | * Device structure... | |
55 | */ | |
56 | ||
57 | typedef enum | |
58 | { | |
59 | CUPS_DEVICE_PRINTER = 0, /* lpd://... */ | |
d4d03398 | 60 | CUPS_DEVICE_IPPS, /* ipps://... */ |
3e7fe0ca | 61 | CUPS_DEVICE_IPP, /* ipp://... */ |
7a14d768 MS |
62 | CUPS_DEVICE_FAX_IPP, /* ipp://... */ |
63 | CUPS_DEVICE_PDL_DATASTREAM, /* socket://... */ | |
64 | CUPS_DEVICE_RIOUSBPRINT /* riousbprint://... */ | |
65 | } cups_devtype_t; | |
66 | ||
67 | ||
68 | typedef struct | |
69 | { | |
f3c17241 MS |
70 | #ifdef HAVE_DNSSD |
71 | DNSServiceRef ref; /* Service reference for query */ | |
72 | #endif /* HAVE_DNSSD */ | |
73 | #ifdef HAVE_AVAHI | |
74 | AvahiRecordBrowser *ref; /* Browser for query */ | |
75 | #endif /* HAVE_AVAHI */ | |
7a14d768 MS |
76 | char *name, /* Service name */ |
77 | *domain, /* Domain name */ | |
78 | *fullName, /* Full name */ | |
238c3832 MS |
79 | *make_and_model, /* Make and model from TXT record */ |
80 | *device_id; /* 1284 device ID from TXT record */ | |
7a14d768 | 81 | cups_devtype_t type; /* Device registration type */ |
1f0275e3 MS |
82 | int priority, /* Priority associated with type */ |
83 | cups_shared, /* CUPS shared printer? */ | |
7a14d768 MS |
84 | sent; /* Did we list the device? */ |
85 | } cups_device_t; | |
86 | ||
87 | ||
38e73f87 MS |
88 | /* |
89 | * Local globals... | |
90 | */ | |
91 | ||
92 | static int job_canceled = 0; | |
93 | /* Set to 1 on SIGTERM */ | |
f3c17241 MS |
94 | #ifdef HAVE_AVAHI |
95 | static AvahiSimplePoll *simple_poll = NULL; | |
96 | /* Poll information */ | |
97 | static int got_data = 0; /* Got data from poll? */ | |
98 | #endif /* HAVE_AVAHI */ | |
38e73f87 MS |
99 | |
100 | ||
7a14d768 MS |
101 | /* |
102 | * Local functions... | |
103 | */ | |
104 | ||
f3c17241 | 105 | #ifdef HAVE_DNSSD |
7a14d768 MS |
106 | static void browse_callback(DNSServiceRef sdRef, |
107 | DNSServiceFlags flags, | |
108 | uint32_t interfaceIndex, | |
109 | DNSServiceErrorType errorCode, | |
110 | const char *serviceName, | |
111 | const char *regtype, | |
82cc1f9a MS |
112 | const char *replyDomain, void *context) |
113 | __attribute__((nonnull(1,5,6,7,8))); | |
7a14d768 MS |
114 | static void browse_local_callback(DNSServiceRef sdRef, |
115 | DNSServiceFlags flags, | |
116 | uint32_t interfaceIndex, | |
117 | DNSServiceErrorType errorCode, | |
118 | const char *serviceName, | |
119 | const char *regtype, | |
120 | const char *replyDomain, | |
82cc1f9a MS |
121 | void *context) |
122 | __attribute__((nonnull(1,5,6,7,8))); | |
f3c17241 MS |
123 | #endif /* HAVE_DNSSD */ |
124 | #ifdef HAVE_AVAHI | |
125 | static void browse_callback(AvahiServiceBrowser *browser, | |
126 | AvahiIfIndex interface, | |
127 | AvahiProtocol protocol, | |
128 | AvahiBrowserEvent event, | |
129 | const char *serviceName, | |
130 | const char *regtype, | |
131 | const char *replyDomain, | |
132 | AvahiLookupResultFlags flags, | |
133 | void *context); | |
134 | static void client_callback(AvahiClient *client, | |
135 | AvahiClientState state, | |
136 | void *context); | |
137 | #endif /* HAVE_AVAHI */ | |
138 | ||
7a14d768 MS |
139 | static int compare_devices(cups_device_t *a, cups_device_t *b); |
140 | static void exec_backend(char **argv); | |
141 | static cups_device_t *get_device(cups_array_t *devices, | |
142 | const char *serviceName, | |
143 | const char *regtype, | |
82cc1f9a MS |
144 | const char *replyDomain) |
145 | __attribute__((nonnull(1,2,3,4))); | |
f3c17241 | 146 | #ifdef HAVE_DNSSD |
7a14d768 MS |
147 | static void query_callback(DNSServiceRef sdRef, |
148 | DNSServiceFlags flags, | |
149 | uint32_t interfaceIndex, | |
150 | DNSServiceErrorType errorCode, | |
151 | const char *fullName, uint16_t rrtype, | |
152 | uint16_t rrclass, uint16_t rdlen, | |
153 | const void *rdata, uint32_t ttl, | |
82cc1f9a MS |
154 | void *context) |
155 | __attribute__((nonnull(1,5,9,11))); | |
f3c17241 MS |
156 | #elif defined(HAVE_AVAHI) |
157 | static int poll_callback(struct pollfd *pollfds, | |
158 | unsigned int num_pollfds, int timeout, | |
159 | void *context); | |
160 | static void query_callback(AvahiRecordBrowser *browser, | |
161 | AvahiIfIndex interface, | |
162 | AvahiProtocol protocol, | |
163 | AvahiBrowserEvent event, | |
164 | const char *name, uint16_t rrclass, | |
165 | uint16_t rrtype, const void *rdata, | |
166 | size_t rdlen, | |
167 | AvahiLookupResultFlags flags, | |
168 | void *context); | |
169 | #endif /* HAVE_DNSSD */ | |
38e73f87 | 170 | static void sigterm_handler(int sig); |
82cc1f9a MS |
171 | static void unquote(char *dst, const char *src, size_t dstsize) |
172 | __attribute__((nonnull(1,2))); | |
7a14d768 MS |
173 | |
174 | ||
175 | /* | |
176 | * 'main()' - Browse for printers. | |
177 | */ | |
178 | ||
179 | int /* O - Exit status */ | |
180 | main(int argc, /* I - Number of command-line args */ | |
181 | char *argv[]) /* I - Command-line arguments */ | |
182 | { | |
c5571a1d | 183 | const char *name; /* Backend name */ |
f3c17241 MS |
184 | cups_array_t *devices; /* Device array */ |
185 | cups_device_t *device; /* Current device */ | |
186 | char uriName[1024]; /* Unquoted fullName for URI */ | |
187 | #ifdef HAVE_DNSSD | |
188 | int fd; /* Main file descriptor */ | |
189 | fd_set input; /* Input set for select() */ | |
190 | struct timeval timeout; /* Timeout for select() */ | |
7a14d768 MS |
191 | DNSServiceRef main_ref, /* Main service reference */ |
192 | fax_ipp_ref, /* IPP fax service reference */ | |
193 | ipp_ref, /* IPP service reference */ | |
194 | ipp_tls_ref, /* IPP w/TLS service reference */ | |
d4d03398 | 195 | ipps_ref, /* IPP service reference */ |
7a14d768 MS |
196 | local_fax_ipp_ref, /* Local IPP fax service reference */ |
197 | local_ipp_ref, /* Local IPP service reference */ | |
198 | local_ipp_tls_ref, /* Local IPP w/TLS service reference */ | |
d4d03398 | 199 | local_ipps_ref, /* Local IPP service reference */ |
7a14d768 MS |
200 | local_printer_ref, /* Local LPD service reference */ |
201 | pdl_datastream_ref, /* AppSocket service reference */ | |
202 | printer_ref, /* LPD service reference */ | |
203 | riousbprint_ref; /* Remote IO service reference */ | |
f3c17241 MS |
204 | #endif /* HAVE_DNSSD */ |
205 | #ifdef HAVE_AVAHI | |
206 | AvahiClient *client; /* Client information */ | |
207 | int error; /* Error code, if any */ | |
208 | #endif /* HAVE_AVAHI */ | |
38e73f87 MS |
209 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
210 | struct sigaction action; /* Actions for POSIX signals */ | |
211 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
7a14d768 MS |
212 | |
213 | ||
214 | /* | |
38e73f87 | 215 | * Don't buffer stderr, and catch SIGTERM... |
7a14d768 MS |
216 | */ |
217 | ||
218 | setbuf(stderr, NULL); | |
219 | ||
38e73f87 MS |
220 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ |
221 | sigset(SIGTERM, sigterm_handler); | |
222 | #elif defined(HAVE_SIGACTION) | |
223 | memset(&action, 0, sizeof(action)); | |
224 | ||
225 | sigemptyset(&action.sa_mask); | |
ee6ddad2 MS |
226 | action.sa_handler = sigterm_handler; |
227 | sigaction(SIGTERM, &action, NULL); | |
38e73f87 MS |
228 | #else |
229 | signal(SIGTERM, sigterm_handler); | |
230 | #endif /* HAVE_SIGSET */ | |
231 | ||
232 | /* | |
233 | * Check command-line... | |
234 | */ | |
235 | ||
7a14d768 MS |
236 | if (argc >= 6) |
237 | exec_backend(argv); | |
238 | else if (argc != 1) | |
239 | { | |
0837b7e8 MS |
240 | _cupsLangPrintf(stderr, |
241 | _("Usage: %s job-id user title copies options [file]"), | |
242 | argv[0]); | |
7a14d768 MS |
243 | return (1); |
244 | } | |
245 | ||
c5571a1d MS |
246 | /* |
247 | * Only do discovery when run as "dnssd"... | |
248 | */ | |
249 | ||
250 | if ((name = strrchr(argv[0], '/')) != NULL) | |
251 | name ++; | |
252 | else | |
253 | name = argv[0]; | |
254 | ||
255 | if (strcmp(name, "dnssd")) | |
256 | return (0); | |
257 | ||
7a14d768 MS |
258 | /* |
259 | * Create an array to track devices... | |
260 | */ | |
261 | ||
262 | devices = cupsArrayNew((cups_array_func_t)compare_devices, NULL); | |
263 | ||
264 | /* | |
265 | * Browse for different kinds of printers... | |
266 | */ | |
267 | ||
f3c17241 | 268 | #ifdef HAVE_DNSSD |
7a14d768 MS |
269 | if (DNSServiceCreateConnection(&main_ref) != kDNSServiceErr_NoError) |
270 | { | |
271 | perror("ERROR: Unable to create service connection"); | |
272 | return (1); | |
273 | } | |
274 | ||
275 | fd = DNSServiceRefSockFD(main_ref); | |
276 | ||
277 | fax_ipp_ref = main_ref; | |
278 | DNSServiceBrowse(&fax_ipp_ref, kDNSServiceFlagsShareConnection, 0, | |
279 | "_fax-ipp._tcp", NULL, browse_callback, devices); | |
280 | ||
281 | ipp_ref = main_ref; | |
282 | DNSServiceBrowse(&ipp_ref, kDNSServiceFlagsShareConnection, 0, | |
283 | "_ipp._tcp", NULL, browse_callback, devices); | |
284 | ||
285 | ipp_tls_ref = main_ref; | |
286 | DNSServiceBrowse(&ipp_tls_ref, kDNSServiceFlagsShareConnection, 0, | |
287 | "_ipp-tls._tcp", NULL, browse_callback, devices); | |
288 | ||
d4d03398 | 289 | ipps_ref = main_ref; |
85dda01c | 290 | DNSServiceBrowse(&ipps_ref, kDNSServiceFlagsShareConnection, 0, |
d4d03398 MS |
291 | "_ipps._tcp", NULL, browse_callback, devices); |
292 | ||
7a14d768 MS |
293 | local_fax_ipp_ref = main_ref; |
294 | DNSServiceBrowse(&local_fax_ipp_ref, kDNSServiceFlagsShareConnection, | |
295 | kDNSServiceInterfaceIndexLocalOnly, | |
296 | "_fax-ipp._tcp", NULL, browse_local_callback, devices); | |
297 | ||
298 | local_ipp_ref = main_ref; | |
299 | DNSServiceBrowse(&local_ipp_ref, kDNSServiceFlagsShareConnection, | |
300 | kDNSServiceInterfaceIndexLocalOnly, | |
301 | "_ipp._tcp", NULL, browse_local_callback, devices); | |
302 | ||
303 | local_ipp_tls_ref = main_ref; | |
304 | DNSServiceBrowse(&local_ipp_tls_ref, kDNSServiceFlagsShareConnection, | |
305 | kDNSServiceInterfaceIndexLocalOnly, | |
306 | "_ipp-tls._tcp", NULL, browse_local_callback, devices); | |
307 | ||
d4d03398 | 308 | local_ipps_ref = main_ref; |
85dda01c | 309 | DNSServiceBrowse(&local_ipps_ref, kDNSServiceFlagsShareConnection, |
d4d03398 MS |
310 | kDNSServiceInterfaceIndexLocalOnly, |
311 | "_ipps._tcp", NULL, browse_local_callback, devices); | |
312 | ||
7a14d768 MS |
313 | local_printer_ref = main_ref; |
314 | DNSServiceBrowse(&local_printer_ref, kDNSServiceFlagsShareConnection, | |
315 | kDNSServiceInterfaceIndexLocalOnly, | |
316 | "_printer._tcp", NULL, browse_local_callback, devices); | |
317 | ||
88f9aafc | 318 | pdl_datastream_ref = main_ref; |
7a14d768 MS |
319 | DNSServiceBrowse(&pdl_datastream_ref, kDNSServiceFlagsShareConnection, 0, |
320 | "_pdl-datastream._tcp", NULL, browse_callback, devices); | |
321 | ||
322 | printer_ref = main_ref; | |
323 | DNSServiceBrowse(&printer_ref, kDNSServiceFlagsShareConnection, 0, | |
324 | "_printer._tcp", NULL, browse_callback, devices); | |
325 | ||
326 | riousbprint_ref = main_ref; | |
327 | DNSServiceBrowse(&riousbprint_ref, kDNSServiceFlagsShareConnection, 0, | |
328 | "_riousbprint._tcp", NULL, browse_callback, devices); | |
f3c17241 MS |
329 | #endif /* HAVE_DNSSD */ |
330 | ||
331 | #ifdef HAVE_AVAHI | |
332 | if ((simple_poll = avahi_simple_poll_new()) == NULL) | |
333 | { | |
a29fd7dd | 334 | fputs("DEBUG: Unable to create Avahi simple poll object.\n", stderr); |
f3c17241 MS |
335 | return (1); |
336 | } | |
337 | ||
338 | avahi_simple_poll_set_func(simple_poll, poll_callback, NULL); | |
339 | ||
340 | client = avahi_client_new(avahi_simple_poll_get(simple_poll), | |
341 | 0, client_callback, simple_poll, &error); | |
342 | if (!client) | |
343 | { | |
a29fd7dd | 344 | fputs("DEBUG: Unable to create Avahi client.\n", stderr); |
f3c17241 MS |
345 | return (1); |
346 | } | |
347 | ||
348 | avahi_service_browser_new(client, AVAHI_IF_UNSPEC, | |
349 | AVAHI_PROTO_UNSPEC, | |
350 | "_fax-ipp._tcp", NULL, 0, | |
351 | browse_callback, devices); | |
352 | avahi_service_browser_new(client, AVAHI_IF_UNSPEC, | |
353 | AVAHI_PROTO_UNSPEC, | |
354 | "_ipp._tcp", NULL, 0, | |
355 | browse_callback, devices); | |
356 | avahi_service_browser_new(client, AVAHI_IF_UNSPEC, | |
357 | AVAHI_PROTO_UNSPEC, | |
358 | "_ipp-tls._tcp", NULL, 0, | |
359 | browse_callback, devices); | |
360 | avahi_service_browser_new(client, AVAHI_IF_UNSPEC, | |
361 | AVAHI_PROTO_UNSPEC, | |
362 | "_ipps._tcp", NULL, 0, | |
363 | browse_callback, devices); | |
364 | avahi_service_browser_new(client, AVAHI_IF_UNSPEC, | |
365 | AVAHI_PROTO_UNSPEC, | |
366 | "_pdl-datastream._tcp", | |
367 | NULL, 0, | |
368 | browse_callback, | |
369 | devices); | |
370 | avahi_service_browser_new(client, AVAHI_IF_UNSPEC, | |
371 | AVAHI_PROTO_UNSPEC, | |
372 | "_printer._tcp", NULL, 0, | |
373 | browse_callback, devices); | |
374 | #endif /* HAVE_AVAHI */ | |
7a14d768 MS |
375 | |
376 | /* | |
377 | * Loop until we are killed... | |
378 | */ | |
379 | ||
38e73f87 | 380 | while (!job_canceled) |
7a14d768 | 381 | { |
f3c17241 MS |
382 | int announce = 0; /* Announce printers? */ |
383 | ||
384 | #ifdef HAVE_DNSSD | |
7a14d768 MS |
385 | FD_ZERO(&input); |
386 | FD_SET(fd, &input); | |
387 | ||
d4d03398 | 388 | timeout.tv_sec = 0; |
f3c17241 | 389 | timeout.tv_usec = 500000; |
7a14d768 MS |
390 | |
391 | if (select(fd + 1, &input, NULL, NULL, &timeout) < 0) | |
392 | continue; | |
393 | ||
394 | if (FD_ISSET(fd, &input)) | |
395 | { | |
396 | /* | |
397 | * Process results of our browsing... | |
398 | */ | |
399 | ||
400 | DNSServiceProcessResult(main_ref); | |
401 | } | |
402 | else | |
f3c17241 MS |
403 | announce = 1; |
404 | ||
405 | #elif defined(HAVE_AVAHI) | |
406 | got_data = 0; | |
407 | ||
408 | if ((error = avahi_simple_poll_iterate(simple_poll, 500)) > 0) | |
409 | { | |
410 | /* | |
411 | * We've been told to exit the loop. Perhaps the connection to | |
412 | * Avahi failed. | |
413 | */ | |
414 | ||
415 | break; | |
416 | } | |
417 | ||
418 | if (!got_data) | |
419 | announce = 1; | |
420 | #endif /* HAVE_DNSSD */ | |
421 | ||
422 | /* fprintf(stderr, "DEBUG: announce=%d\n", announce);*/ | |
423 | ||
424 | if (announce) | |
7a14d768 MS |
425 | { |
426 | /* | |
427 | * Announce any devices we've found... | |
428 | */ | |
429 | ||
f3c17241 | 430 | #ifdef HAVE_DNSSD |
58dc1933 | 431 | DNSServiceErrorType status; /* DNS query status */ |
f3c17241 | 432 | #endif /* HAVE_DNSSD */ |
1f0275e3 | 433 | cups_device_t *best; /* Best matching device */ |
7a14d768 | 434 | char device_uri[1024]; /* Device URI */ |
5eb9da71 | 435 | int count; /* Number of queries */ |
d4d03398 | 436 | int sent; /* Number of sent */ |
7a14d768 | 437 | |
1f0275e3 | 438 | for (device = (cups_device_t *)cupsArrayFirst(devices), |
d4d03398 | 439 | best = NULL, count = 0, sent = 0; |
7a14d768 MS |
440 | device; |
441 | device = (cups_device_t *)cupsArrayNext(devices)) | |
d4d03398 MS |
442 | { |
443 | if (device->sent) | |
444 | sent ++; | |
445 | ||
446 | if (device->ref) | |
447 | count ++; | |
448 | ||
7a14d768 MS |
449 | if (!device->ref && !device->sent) |
450 | { | |
451 | /* | |
452 | * Found the device, now get the TXT record(s) for it... | |
453 | */ | |
454 | ||
f3c17241 | 455 | if (count < 50) |
5eb9da71 | 456 | { |
5eb9da71 MS |
457 | fprintf(stderr, "DEBUG: Querying \"%s\"...\n", device->fullName); |
458 | ||
f3c17241 MS |
459 | #ifdef HAVE_DNSSD |
460 | device->ref = main_ref; | |
461 | ||
58dc1933 MS |
462 | status = DNSServiceQueryRecord(&(device->ref), |
463 | kDNSServiceFlagsShareConnection, | |
464 | 0, device->fullName, | |
465 | kDNSServiceType_TXT, | |
466 | kDNSServiceClass_IN, query_callback, | |
f3c17241 | 467 | device); |
58dc1933 | 468 | if (status != kDNSServiceErr_NoError) |
f3c17241 MS |
469 | fprintf(stderr, |
470 | "ERROR: Unable to query \"%s\" for TXT records: %d\n", | |
471 | device->fullName, status); | |
472 | /* Users never see this */ | |
58dc1933 | 473 | else |
5eb9da71 | 474 | count ++; |
f3c17241 MS |
475 | |
476 | #else | |
477 | if ((device->ref = avahi_record_browser_new(client, AVAHI_IF_UNSPEC, | |
478 | AVAHI_PROTO_UNSPEC, | |
479 | device->fullName, | |
480 | AVAHI_DNS_CLASS_IN, | |
481 | AVAHI_DNS_TYPE_TXT, | |
482 | 0, | |
483 | query_callback, | |
484 | device)) == NULL) | |
485 | fprintf(stderr, | |
486 | "ERROR: Unable to query \"%s\" for TXT records: %s\n", | |
487 | device->fullName, | |
488 | avahi_strerror(avahi_client_errno(client))); | |
489 | /* Users never see this */ | |
490 | else | |
491 | count ++; | |
492 | #endif /* HAVE_AVAHI */ | |
5eb9da71 | 493 | } |
7a14d768 MS |
494 | } |
495 | else if (!device->sent) | |
496 | { | |
f3c17241 | 497 | #ifdef HAVE_DNSSD |
7a14d768 MS |
498 | /* |
499 | * Got the TXT records, now report the device... | |
500 | */ | |
501 | ||
502 | DNSServiceRefDeallocate(device->ref); | |
f3c17241 MS |
503 | #else |
504 | avahi_record_browser_free(device->ref); | |
505 | #endif /* HAVE_DNSSD */ | |
506 | ||
507 | device->ref = NULL; | |
7a14d768 | 508 | |
1f0275e3 MS |
509 | if (!best) |
510 | best = device; | |
88f9aafc MS |
511 | else if (_cups_strcasecmp(best->name, device->name) || |
512 | _cups_strcasecmp(best->domain, device->domain)) | |
1f0275e3 | 513 | { |
bf3816c7 MS |
514 | unquote(uriName, best->fullName, sizeof(uriName)); |
515 | ||
1f0275e3 | 516 | httpAssembleURI(HTTP_URI_CODING_ALL, device_uri, sizeof(device_uri), |
38e73f87 | 517 | "dnssd", NULL, uriName, 0, |
1f0275e3 MS |
518 | best->cups_shared ? "/cups" : "/"); |
519 | ||
749b1e90 | 520 | cupsBackendReport("network", device_uri, best->make_and_model, |
238c3832 | 521 | best->name, best->device_id, NULL); |
1f0275e3 MS |
522 | best->sent = 1; |
523 | best = device; | |
d4d03398 MS |
524 | |
525 | sent ++; | |
1f0275e3 MS |
526 | } |
527 | else if (best->priority > device->priority || | |
528 | (best->priority == device->priority && | |
529 | best->type < device->type)) | |
530 | { | |
531 | best->sent = 1; | |
532 | best = device; | |
d4d03398 MS |
533 | |
534 | sent ++; | |
1f0275e3 MS |
535 | } |
536 | else | |
d4d03398 | 537 | { |
1f0275e3 | 538 | device->sent = 1; |
d4d03398 MS |
539 | |
540 | sent ++; | |
541 | } | |
1f0275e3 | 542 | } |
d4d03398 | 543 | } |
7a14d768 | 544 | |
1f0275e3 MS |
545 | if (best) |
546 | { | |
bf3816c7 MS |
547 | unquote(uriName, best->fullName, sizeof(uriName)); |
548 | ||
1f0275e3 | 549 | httpAssembleURI(HTTP_URI_CODING_ALL, device_uri, sizeof(device_uri), |
38e73f87 | 550 | "dnssd", NULL, uriName, 0, |
1f0275e3 | 551 | best->cups_shared ? "/cups" : "/"); |
7a14d768 | 552 | |
749b1e90 | 553 | cupsBackendReport("network", device_uri, best->make_and_model, |
238c3832 | 554 | best->name, best->device_id, NULL); |
1f0275e3 | 555 | best->sent = 1; |
d4d03398 | 556 | sent ++; |
1f0275e3 | 557 | } |
d4d03398 | 558 | |
f3c17241 MS |
559 | fprintf(stderr, "DEBUG: sent=%d, count=%d\n", sent, count); |
560 | ||
d4d03398 MS |
561 | if (sent == cupsArrayCount(devices)) |
562 | break; | |
7a14d768 MS |
563 | } |
564 | } | |
38e73f87 MS |
565 | |
566 | return (CUPS_BACKEND_OK); | |
7a14d768 MS |
567 | } |
568 | ||
569 | ||
f3c17241 | 570 | #ifdef HAVE_DNSSD |
7a14d768 MS |
571 | /* |
572 | * 'browse_callback()' - Browse devices. | |
573 | */ | |
574 | ||
575 | static void | |
576 | browse_callback( | |
577 | DNSServiceRef sdRef, /* I - Service reference */ | |
578 | DNSServiceFlags flags, /* I - Option flags */ | |
579 | uint32_t interfaceIndex, /* I - Interface number */ | |
580 | DNSServiceErrorType errorCode, /* I - Error, if any */ | |
581 | const char *serviceName, /* I - Name of service/device */ | |
582 | const char *regtype, /* I - Type of service */ | |
583 | const char *replyDomain, /* I - Service domain */ | |
584 | void *context) /* I - Devices array */ | |
585 | { | |
586 | fprintf(stderr, "DEBUG2: browse_callback(sdRef=%p, flags=%x, " | |
587 | "interfaceIndex=%d, errorCode=%d, serviceName=\"%s\", " | |
588 | "regtype=\"%s\", replyDomain=\"%s\", context=%p)\n", | |
589 | sdRef, flags, interfaceIndex, errorCode, | |
a29fd7dd | 590 | serviceName, regtype, replyDomain, context); |
7a14d768 MS |
591 | |
592 | /* | |
593 | * Only process "add" data... | |
594 | */ | |
595 | ||
596 | if (errorCode != kDNSServiceErr_NoError || !(flags & kDNSServiceFlagsAdd)) | |
597 | return; | |
598 | ||
599 | /* | |
600 | * Get the device... | |
601 | */ | |
602 | ||
603 | get_device((cups_array_t *)context, serviceName, regtype, replyDomain); | |
604 | } | |
605 | ||
606 | ||
607 | /* | |
608 | * 'browse_local_callback()' - Browse local devices. | |
609 | */ | |
610 | ||
611 | static void | |
612 | browse_local_callback( | |
613 | DNSServiceRef sdRef, /* I - Service reference */ | |
614 | DNSServiceFlags flags, /* I - Option flags */ | |
615 | uint32_t interfaceIndex, /* I - Interface number */ | |
616 | DNSServiceErrorType errorCode, /* I - Error, if any */ | |
617 | const char *serviceName, /* I - Name of service/device */ | |
618 | const char *regtype, /* I - Type of service */ | |
619 | const char *replyDomain, /* I - Service domain */ | |
620 | void *context) /* I - Devices array */ | |
621 | { | |
622 | cups_device_t *device; /* Device */ | |
623 | ||
624 | ||
625 | fprintf(stderr, "DEBUG2: browse_local_callback(sdRef=%p, flags=%x, " | |
626 | "interfaceIndex=%d, errorCode=%d, serviceName=\"%s\", " | |
627 | "regtype=\"%s\", replyDomain=\"%s\", context=%p)\n", | |
628 | sdRef, flags, interfaceIndex, errorCode, | |
a29fd7dd | 629 | serviceName, regtype, replyDomain, context); |
7a14d768 MS |
630 | |
631 | /* | |
632 | * Only process "add" data... | |
633 | */ | |
634 | ||
635 | if (errorCode != kDNSServiceErr_NoError || !(flags & kDNSServiceFlagsAdd)) | |
636 | return; | |
637 | ||
638 | /* | |
639 | * Get the device... | |
640 | */ | |
641 | ||
642 | device = get_device((cups_array_t *)context, serviceName, regtype, | |
643 | replyDomain); | |
644 | ||
645 | /* | |
646 | * Hide locally-registered devices... | |
647 | */ | |
648 | ||
649 | fprintf(stderr, "DEBUG: Hiding local printer \"%s\"...\n", | |
650 | device->fullName); | |
651 | device->sent = 1; | |
652 | } | |
f3c17241 MS |
653 | #endif /* HAVE_DNSSD */ |
654 | ||
655 | ||
656 | #ifdef HAVE_AVAHI | |
657 | /* | |
658 | * 'browse_callback()' - Browse devices. | |
659 | */ | |
660 | ||
661 | static void | |
662 | browse_callback( | |
663 | AvahiServiceBrowser *browser, /* I - Browser */ | |
664 | AvahiIfIndex interface, /* I - Interface index (unused) */ | |
665 | AvahiProtocol protocol, /* I - Network protocol (unused) */ | |
666 | AvahiBrowserEvent event, /* I - What happened */ | |
667 | const char *name, /* I - Service name */ | |
668 | const char *type, /* I - Registration type */ | |
669 | const char *domain, /* I - Domain */ | |
670 | AvahiLookupResultFlags flags, /* I - Flags */ | |
671 | void *context) /* I - Devices array */ | |
672 | { | |
673 | AvahiClient *client = avahi_service_browser_get_client(browser); | |
674 | /* Client information */ | |
675 | ||
676 | ||
677 | (void)interface; | |
678 | (void)protocol; | |
679 | (void)context; | |
680 | ||
681 | switch (event) | |
682 | { | |
683 | case AVAHI_BROWSER_FAILURE: | |
684 | fprintf(stderr, "DEBUG: browse_callback: %s\n", | |
685 | avahi_strerror(avahi_client_errno(client))); | |
686 | avahi_simple_poll_quit(simple_poll); | |
687 | break; | |
688 | ||
689 | case AVAHI_BROWSER_NEW: | |
690 | /* | |
691 | * This object is new on the network. | |
692 | */ | |
693 | ||
694 | if (flags & AVAHI_LOOKUP_RESULT_LOCAL) | |
695 | { | |
696 | /* | |
697 | * This comes from the local machine so ignore it. | |
698 | */ | |
699 | ||
700 | fprintf(stderr, "DEBUG: Ignoring local service %s.\n", name); | |
701 | } | |
702 | else | |
703 | { | |
704 | /* | |
705 | * Create a device entry for it if it doesn't yet exist. | |
706 | */ | |
707 | ||
708 | get_device((cups_array_t *)context, name, type, domain); | |
709 | } | |
710 | break; | |
711 | ||
712 | case AVAHI_BROWSER_REMOVE: | |
713 | case AVAHI_BROWSER_ALL_FOR_NOW: | |
714 | case AVAHI_BROWSER_CACHE_EXHAUSTED: | |
715 | break; | |
716 | } | |
717 | } | |
718 | ||
719 | ||
720 | /* | |
721 | * 'client_callback()' - Avahi client callback function. | |
722 | */ | |
723 | ||
724 | static void | |
725 | client_callback( | |
726 | AvahiClient *client, /* I - Client information (unused) */ | |
727 | AvahiClientState state, /* I - Current state */ | |
728 | void *context) /* I - User data (unused) */ | |
729 | { | |
730 | (void)client; | |
731 | (void)context; | |
732 | ||
733 | /* | |
734 | * If the connection drops, quit. | |
735 | */ | |
736 | ||
737 | if (state == AVAHI_CLIENT_FAILURE) | |
738 | { | |
739 | fputs("DEBUG: Avahi connection failed.\n", stderr); | |
740 | avahi_simple_poll_quit(simple_poll); | |
741 | } | |
742 | } | |
743 | #endif /* HAVE_AVAHI */ | |
7a14d768 MS |
744 | |
745 | ||
746 | /* | |
747 | * 'compare_devices()' - Compare two devices. | |
748 | */ | |
749 | ||
750 | static int /* O - Result of comparison */ | |
751 | compare_devices(cups_device_t *a, /* I - First device */ | |
752 | cups_device_t *b) /* I - Second device */ | |
753 | { | |
38e73f87 | 754 | return (strcmp(a->name, b->name)); |
7a14d768 MS |
755 | } |
756 | ||
757 | ||
758 | /* | |
759 | * 'exec_backend()' - Execute the backend that corresponds to the | |
760 | * resolved service name. | |
761 | */ | |
762 | ||
763 | static void | |
764 | exec_backend(char **argv) /* I - Command-line arguments */ | |
765 | { | |
766 | const char *resolved_uri, /* Resolved device URI */ | |
767 | *cups_serverbin; /* Location of programs */ | |
768 | char scheme[1024], /* Scheme from URI */ | |
769 | *ptr, /* Pointer into scheme */ | |
770 | filename[1024]; /* Backend filename */ | |
771 | ||
772 | ||
773 | /* | |
774 | * Resolve the device URI... | |
775 | */ | |
776 | ||
e07d4801 MS |
777 | job_canceled = -1; |
778 | ||
0268488e MS |
779 | while ((resolved_uri = cupsBackendDeviceURI(argv)) == NULL) |
780 | { | |
781 | _cupsLangPrintFilter(stderr, "INFO", _("Unable to locate printer.")); | |
782 | sleep(10); | |
783 | ||
784 | if (getenv("CLASS") != NULL) | |
785 | exit(CUPS_BACKEND_FAILED); | |
786 | } | |
7a14d768 MS |
787 | |
788 | /* | |
789 | * Extract the scheme from the URI... | |
790 | */ | |
791 | ||
792 | strlcpy(scheme, resolved_uri, sizeof(scheme)); | |
793 | if ((ptr = strchr(scheme, ':')) != NULL) | |
794 | *ptr = '\0'; | |
795 | ||
796 | /* | |
797 | * Get the filename of the backend... | |
798 | */ | |
799 | ||
800 | if ((cups_serverbin = getenv("CUPS_SERVERBIN")) == NULL) | |
801 | cups_serverbin = CUPS_SERVERBIN; | |
802 | ||
803 | snprintf(filename, sizeof(filename), "%s/backend/%s", cups_serverbin, scheme); | |
804 | ||
805 | /* | |
38e73f87 | 806 | * Overwrite the device URI and run the new backend... |
7a14d768 MS |
807 | */ |
808 | ||
809 | setenv("DEVICE_URI", resolved_uri, 1); | |
810 | ||
811 | argv[0] = (char *)resolved_uri; | |
812 | ||
813 | fprintf(stderr, "DEBUG: Executing backend \"%s\"...\n", filename); | |
814 | ||
815 | execv(filename, argv); | |
816 | ||
817 | fprintf(stderr, "ERROR: Unable to execute backend \"%s\": %s\n", filename, | |
818 | strerror(errno)); | |
819 | exit(CUPS_BACKEND_STOP); | |
820 | } | |
821 | ||
822 | ||
f3c17241 MS |
823 | /* |
824 | * 'device_type()' - Get DNS-SD type enumeration from string. | |
825 | */ | |
826 | ||
827 | static int | |
828 | device_type(const char *regtype) | |
829 | { | |
830 | #ifdef HAVE_AVAHI | |
831 | if (!strcmp(regtype, "_ipp._tcp")) | |
832 | return (CUPS_DEVICE_IPP); | |
833 | else if (!strcmp(regtype, "_ipps._tcp") || | |
834 | !strcmp(regtype, "_ipp-tls._tcp")) | |
835 | return (CUPS_DEVICE_IPPS); | |
836 | else if (!strcmp(regtype, "_fax-ipp._tcp")) | |
837 | return (CUPS_DEVICE_FAX_IPP); | |
838 | else if (!strcmp(regtype, "_printer._tcp")) | |
839 | return (CUPS_DEVICE_PDL_DATASTREAM); | |
840 | #else | |
841 | if (!strcmp(regtype, "_ipp._tcp.")) | |
842 | return (CUPS_DEVICE_IPP); | |
843 | else if (!strcmp(regtype, "_ipps._tcp.") || | |
844 | !strcmp(regtype, "_ipp-tls._tcp.")) | |
845 | return (CUPS_DEVICE_IPPS); | |
846 | else if (!strcmp(regtype, "_fax-ipp._tcp.")) | |
847 | return (CUPS_DEVICE_FAX_IPP); | |
848 | else if (!strcmp(regtype, "_printer._tcp.")) | |
849 | return (CUPS_DEVICE_PRINTER); | |
850 | else if (!strcmp(regtype, "_pdl-datastream._tcp.")) | |
851 | return (CUPS_DEVICE_PDL_DATASTREAM); | |
852 | #endif /* HAVE_AVAHI */ | |
853 | ||
854 | return (CUPS_DEVICE_RIOUSBPRINT); | |
855 | } | |
856 | ||
857 | ||
7a14d768 MS |
858 | /* |
859 | * 'get_device()' - Create or update a device. | |
860 | */ | |
861 | ||
862 | static cups_device_t * /* O - Device */ | |
863 | get_device(cups_array_t *devices, /* I - Device array */ | |
864 | const char *serviceName, /* I - Name of service/device */ | |
865 | const char *regtype, /* I - Type of service */ | |
866 | const char *replyDomain) /* I - Service domain */ | |
867 | { | |
868 | cups_device_t key, /* Search key */ | |
869 | *device; /* Device */ | |
58dc1933 MS |
870 | char fullName[kDNSServiceMaxDomainName]; |
871 | /* Full name for query */ | |
7a14d768 MS |
872 | |
873 | ||
874 | /* | |
875 | * See if this is a new device... | |
876 | */ | |
877 | ||
38e73f87 | 878 | key.name = (char *)serviceName; |
f3c17241 | 879 | key.type = device_type(regtype); |
7a14d768 | 880 | |
1f0275e3 MS |
881 | for (device = cupsArrayFind(devices, &key); |
882 | device; | |
883 | device = cupsArrayNext(devices)) | |
88f9aafc | 884 | if (_cups_strcasecmp(device->name, key.name)) |
1f0275e3 MS |
885 | break; |
886 | else if (device->type == key.type) | |
38e73f87 | 887 | { |
88f9aafc MS |
888 | if (!_cups_strcasecmp(device->domain, "local.") && |
889 | _cups_strcasecmp(device->domain, replyDomain)) | |
38e73f87 MS |
890 | { |
891 | /* | |
892 | * Update the .local listing to use the "global" domain name instead. | |
893 | * The backend will try local lookups first, then the global domain name. | |
894 | */ | |
895 | ||
896 | free(device->domain); | |
897 | device->domain = strdup(replyDomain); | |
898 | ||
f3c17241 | 899 | #ifdef HAVE_DNSSD |
38e73f87 MS |
900 | DNSServiceConstructFullName(fullName, device->name, regtype, |
901 | replyDomain); | |
f3c17241 MS |
902 | #else /* HAVE_AVAHI */ |
903 | avahi_service_name_join(fullName, kDNSServiceMaxDomainName, | |
a29fd7dd | 904 | serviceName, regtype, replyDomain); |
f3c17241 MS |
905 | #endif /* HAVE_DNSSD */ |
906 | ||
38e73f87 MS |
907 | free(device->fullName); |
908 | device->fullName = strdup(fullName); | |
909 | } | |
910 | ||
1f0275e3 | 911 | return (device); |
38e73f87 | 912 | } |
7a14d768 | 913 | |
1f0275e3 MS |
914 | /* |
915 | * Yes, add the device... | |
916 | */ | |
7a14d768 | 917 | |
1f0275e3 MS |
918 | fprintf(stderr, "DEBUG: Found \"%s.%s%s\"...\n", serviceName, regtype, |
919 | replyDomain); | |
7a14d768 | 920 | |
1f0275e3 MS |
921 | device = calloc(sizeof(cups_device_t), 1); |
922 | device->name = strdup(serviceName); | |
923 | device->domain = strdup(replyDomain); | |
924 | device->type = key.type; | |
925 | device->priority = 50; | |
7a14d768 | 926 | |
1f0275e3 | 927 | cupsArrayAdd(devices, device); |
7a14d768 MS |
928 | |
929 | /* | |
1f0275e3 | 930 | * Set the "full name" of this service, which is used for queries... |
7a14d768 MS |
931 | */ |
932 | ||
f3c17241 | 933 | #ifdef HAVE_DNSSD |
58dc1933 | 934 | DNSServiceConstructFullName(fullName, serviceName, regtype, replyDomain); |
f3c17241 MS |
935 | #else /* HAVE_AVAHI */ |
936 | avahi_service_name_join(fullName, kDNSServiceMaxDomainName, | |
937 | serviceName, regtype, replyDomain); | |
938 | #endif /* HAVE_DNSSD */ | |
939 | ||
7a14d768 MS |
940 | device->fullName = strdup(fullName); |
941 | ||
942 | return (device); | |
943 | } | |
944 | ||
945 | ||
f3c17241 MS |
946 | #ifdef HAVE_AVAHI |
947 | /* | |
948 | * 'poll_callback()' - Wait for input on the specified file descriptors. | |
949 | * | |
950 | * Note: This function is needed because avahi_simple_poll_iterate is broken | |
951 | * and always uses a timeout of 0 (!) milliseconds. | |
952 | * (Avahi Ticket #364) | |
953 | */ | |
954 | ||
955 | static int /* O - Number of file descriptors matching */ | |
956 | poll_callback( | |
957 | struct pollfd *pollfds, /* I - File descriptors */ | |
958 | unsigned int num_pollfds, /* I - Number of file descriptors */ | |
959 | int timeout, /* I - Timeout in milliseconds (unused) */ | |
960 | void *context) /* I - User data (unused) */ | |
961 | { | |
962 | int val; /* Return value */ | |
963 | ||
964 | ||
965 | (void)timeout; | |
966 | (void)context; | |
967 | ||
968 | val = poll(pollfds, num_pollfds, 500); | |
969 | ||
970 | if (val < 0) | |
971 | fprintf(stderr, "DEBUG: poll_callback: %s\n", strerror(errno)); | |
972 | else if (val > 0) | |
973 | got_data = 1; | |
974 | ||
975 | return (val); | |
976 | } | |
977 | #endif /* HAVE_AVAHI */ | |
978 | ||
979 | ||
980 | #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI) | |
981 | # ifdef HAVE_DNSSD | |
7a14d768 MS |
982 | /* |
983 | * 'query_callback()' - Process query data. | |
984 | */ | |
985 | ||
986 | static void | |
987 | query_callback( | |
988 | DNSServiceRef sdRef, /* I - Service reference */ | |
989 | DNSServiceFlags flags, /* I - Data flags */ | |
990 | uint32_t interfaceIndex, /* I - Interface */ | |
991 | DNSServiceErrorType errorCode, /* I - Error, if any */ | |
992 | const char *fullName, /* I - Full service name */ | |
993 | uint16_t rrtype, /* I - Record type */ | |
994 | uint16_t rrclass, /* I - Record class */ | |
995 | uint16_t rdlen, /* I - Length of record data */ | |
996 | const void *rdata, /* I - Record data */ | |
997 | uint32_t ttl, /* I - Time-to-live */ | |
f3c17241 | 998 | void *context) /* I - Device */ |
7a14d768 | 999 | { |
f3c17241 MS |
1000 | # else |
1001 | /* | |
1002 | * 'query_callback()' - Process query data. | |
1003 | */ | |
7a14d768 | 1004 | |
f3c17241 MS |
1005 | static void |
1006 | query_callback( | |
1007 | AvahiRecordBrowser *browser, /* I - Record browser */ | |
1008 | AvahiIfIndex interfaceIndex, | |
1009 | /* I - Interface index (unused) */ | |
1010 | AvahiProtocol protocol, /* I - Network protocol (unused) */ | |
1011 | AvahiBrowserEvent event, /* I - What happened? */ | |
1012 | const char *fullName, /* I - Service name */ | |
1013 | uint16_t rrclass, /* I - Record class */ | |
1014 | uint16_t rrtype, /* I - Record type */ | |
1015 | const void *rdata, /* I - TXT record */ | |
1016 | size_t rdlen, /* I - Length of TXT record */ | |
1017 | AvahiLookupResultFlags flags, /* I - Flags */ | |
1018 | void *context) /* I - Device */ | |
1019 | { | |
1020 | AvahiClient *client = avahi_record_browser_get_client(browser); | |
1021 | /* Client information */ | |
1022 | # endif /* HAVE_DNSSD */ | |
1023 | char *ptr; /* Pointer into string */ | |
1024 | cups_device_t *device = (cups_device_t *)context; | |
1025 | /* Device */ | |
1026 | const uint8_t *data, /* Pointer into data */ | |
1027 | *datanext, /* Next key/value pair */ | |
1028 | *dataend; /* End of entire TXT record */ | |
1029 | uint8_t datalen; /* Length of current key/value pair */ | |
1030 | char key[256], /* Key string */ | |
1031 | value[256], /* Value string */ | |
1032 | make_and_model[512], /* Manufacturer and model */ | |
1033 | model[256], /* Model */ | |
c1420c87 | 1034 | pdl[256], /* PDL */ |
f3c17241 MS |
1035 | device_id[2048]; /* 1284 device ID */ |
1036 | ||
1037 | ||
1038 | # ifdef HAVE_DNSSD | |
7a14d768 MS |
1039 | fprintf(stderr, "DEBUG2: query_callback(sdRef=%p, flags=%x, " |
1040 | "interfaceIndex=%d, errorCode=%d, fullName=\"%s\", " | |
1041 | "rrtype=%u, rrclass=%u, rdlen=%u, rdata=%p, ttl=%u, " | |
1042 | "context=%p)\n", | |
1043 | sdRef, flags, interfaceIndex, errorCode, | |
1044 | fullName ? fullName : "(null)", rrtype, rrclass, rdlen, rdata, ttl, | |
1045 | context); | |
1046 | ||
1047 | /* | |
1048 | * Only process "add" data... | |
1049 | */ | |
1050 | ||
1051 | if (errorCode != kDNSServiceErr_NoError || !(flags & kDNSServiceFlagsAdd)) | |
1052 | return; | |
1053 | ||
f3c17241 MS |
1054 | # else |
1055 | fprintf(stderr, "DEBUG2: query_callback(browser=%p, interfaceIndex=%d, " | |
1056 | "protocol=%d, event=%d, fullName=\"%s\", rrclass=%u, " | |
1057 | "rrtype=%u, rdata=%p, rdlen=%u, flags=%x, context=%p)\n", | |
1058 | browser, interfaceIndex, protocol, event, | |
1059 | fullName ? fullName : "(null)", rrclass, rrtype, rdata, | |
1060 | (unsigned)rdlen, flags, context); | |
1061 | ||
7a14d768 | 1062 | /* |
f3c17241 | 1063 | * Only process "add" data... |
7a14d768 MS |
1064 | */ |
1065 | ||
f3c17241 MS |
1066 | if (event != AVAHI_BROWSER_NEW) |
1067 | { | |
1068 | if (event == AVAHI_BROWSER_FAILURE) | |
1069 | fprintf(stderr, "ERROR: %s\n", | |
1070 | avahi_strerror(avahi_client_errno(client))); | |
7a14d768 | 1071 | |
f3c17241 MS |
1072 | return; |
1073 | } | |
1074 | # endif /* HAVE_DNSSD */ | |
7a14d768 | 1075 | |
f3c17241 MS |
1076 | /* |
1077 | * Pull out the priority and make and model from the TXT | |
1078 | * record and save it... | |
1079 | */ | |
7a14d768 | 1080 | |
f3c17241 MS |
1081 | device_id[0] = '\0'; |
1082 | make_and_model[0] = '\0'; | |
c1420c87 | 1083 | pdl[0] = '\0'; |
7a14d768 | 1084 | |
5a9febac | 1085 | strlcpy(model, "Unknown", sizeof(model)); |
1f0275e3 | 1086 | |
f3c17241 MS |
1087 | for (data = rdata, dataend = data + rdlen; |
1088 | data < dataend; | |
1089 | data = datanext) | |
7a14d768 | 1090 | { |
f3c17241 MS |
1091 | /* |
1092 | * Read a key/value pair starting with an 8-bit length. Since the | |
1093 | * length is 8 bits and the size of the key/value buffers is 256, we | |
1094 | * don't need to check for overflow... | |
1095 | */ | |
1096 | ||
1097 | datalen = *data++; | |
1098 | ||
1099 | if (!datalen || (data + datalen) > dataend) | |
1f0275e3 | 1100 | break; |
f3c17241 MS |
1101 | |
1102 | datanext = data + datalen; | |
1103 | ||
1104 | for (ptr = key; data < datanext && *data != '='; data ++) | |
1105 | *ptr++ = *data; | |
1106 | *ptr = '\0'; | |
1107 | ||
1108 | if (data < datanext && *data == '=') | |
1f0275e3 | 1109 | { |
f3c17241 | 1110 | data ++; |
7a14d768 | 1111 | |
f3c17241 MS |
1112 | if (data < datanext) |
1113 | memcpy(value, data, datanext - data); | |
1114 | value[datanext - data] = '\0'; | |
7a14d768 | 1115 | |
f3c17241 MS |
1116 | fprintf(stderr, "DEBUG2: query_callback: \"%s=%s\".\n", |
1117 | key, value); | |
1118 | } | |
1119 | else | |
1120 | { | |
1121 | fprintf(stderr, "DEBUG2: query_callback: \"%s\" with no value.\n", | |
1122 | key); | |
1123 | continue; | |
1124 | } | |
7a14d768 | 1125 | |
f3c17241 MS |
1126 | if (!_cups_strncasecmp(key, "usb_", 4)) |
1127 | { | |
1128 | /* | |
1129 | * Add USB device ID information... | |
1130 | */ | |
7a14d768 | 1131 | |
f3c17241 MS |
1132 | ptr = device_id + strlen(device_id); |
1133 | snprintf(ptr, sizeof(device_id) - (ptr - device_id), "%s:%s;", | |
1134 | key + 4, value); | |
1135 | } | |
238c3832 | 1136 | |
f3c17241 MS |
1137 | if (!_cups_strcasecmp(key, "usb_MFG") || !_cups_strcasecmp(key, "usb_MANU") || |
1138 | !_cups_strcasecmp(key, "usb_MANUFACTURER")) | |
5a9febac | 1139 | strlcpy(make_and_model, value, sizeof(make_and_model)); |
f3c17241 | 1140 | else if (!_cups_strcasecmp(key, "usb_MDL") || !_cups_strcasecmp(key, "usb_MODEL")) |
5a9febac | 1141 | strlcpy(model, value, sizeof(model)); |
f3c17241 MS |
1142 | else if (!_cups_strcasecmp(key, "product") && !strstr(value, "Ghostscript")) |
1143 | { | |
1144 | if (value[0] == '(') | |
1f0275e3 | 1145 | { |
238c3832 | 1146 | /* |
f3c17241 | 1147 | * Strip parenthesis... |
238c3832 | 1148 | */ |
7a14d768 | 1149 | |
f3c17241 MS |
1150 | if ((ptr = value + strlen(value) - 1) > value && *ptr == ')') |
1151 | *ptr = '\0'; | |
7a14d768 | 1152 | |
5a9febac | 1153 | strlcpy(model, value + 1, sizeof(model)); |
f3c17241 MS |
1154 | } |
1155 | else | |
5a9febac | 1156 | strlcpy(model, value, sizeof(model)); |
f3c17241 MS |
1157 | } |
1158 | else if (!_cups_strcasecmp(key, "ty")) | |
1159 | { | |
5a9febac | 1160 | strlcpy(model, value, sizeof(model)); |
1f0275e3 | 1161 | |
f3c17241 | 1162 | if ((ptr = strchr(model, ',')) != NULL) |
238c3832 | 1163 | *ptr = '\0'; |
f3c17241 | 1164 | } |
c1420c87 MS |
1165 | else if (!_cups_strcasecmp(key, "pdl")) |
1166 | strlcpy(pdl, value, sizeof(pdl)); | |
f3c17241 MS |
1167 | else if (!_cups_strcasecmp(key, "priority")) |
1168 | device->priority = atoi(value); | |
1169 | else if ((device->type == CUPS_DEVICE_IPP || | |
1170 | device->type == CUPS_DEVICE_IPPS || | |
1171 | device->type == CUPS_DEVICE_PRINTER) && | |
1172 | !_cups_strcasecmp(key, "printer-type")) | |
1173 | { | |
1174 | /* | |
1175 | * This is a CUPS printer! | |
1176 | */ | |
238c3832 | 1177 | |
f3c17241 | 1178 | device->cups_shared = 1; |
238c3832 | 1179 | |
f3c17241 MS |
1180 | if (device->type == CUPS_DEVICE_PRINTER) |
1181 | device->sent = 1; | |
1182 | } | |
1183 | } | |
238c3832 | 1184 | |
f3c17241 MS |
1185 | if (device->device_id) |
1186 | free(device->device_id); | |
238c3832 | 1187 | |
f3c17241 MS |
1188 | if (!device_id[0] && strcmp(model, "Unknown")) |
1189 | { | |
1190 | if (make_and_model[0]) | |
1191 | snprintf(device_id, sizeof(device_id), "MFG:%s;MDL:%s;", | |
1192 | make_and_model, model); | |
1193 | else if (!_cups_strncasecmp(model, "designjet ", 10)) | |
1194 | snprintf(device_id, sizeof(device_id), "MFG:HP;MDL:%s", model + 10); | |
1195 | else if (!_cups_strncasecmp(model, "stylus ", 7)) | |
1196 | snprintf(device_id, sizeof(device_id), "MFG:EPSON;MDL:%s", model + 7); | |
1197 | else if ((ptr = strchr(model, ' ')) != NULL) | |
1198 | { | |
1199 | /* | |
1200 | * Assume the first word is the make... | |
1201 | */ | |
238c3832 | 1202 | |
f3c17241 MS |
1203 | memcpy(make_and_model, model, ptr - model); |
1204 | make_and_model[ptr - model] = '\0'; | |
238c3832 | 1205 | |
f3c17241 MS |
1206 | snprintf(device_id, sizeof(device_id), "MFG:%s;MDL:%s", |
1207 | make_and_model, ptr + 1); | |
1208 | } | |
1209 | } | |
238c3832 | 1210 | |
c1420c87 MS |
1211 | if (device_id[0] && |
1212 | !strstr(device_id, "CMD:") && | |
1213 | !strstr(device_id, "COMMAND SET:") && | |
1214 | (strstr(pdl, "application/pdf") || | |
1215 | strstr(pdl, "application/postscript") || | |
1216 | strstr(pdl, "application/vnd.hp-PCL") || | |
1217 | strstr(pdl, "image/"))) | |
1218 | { | |
1219 | value[0] = '\0'; | |
1220 | if (strstr(pdl, "application/pdf")) | |
1221 | strlcat(value, ",PDF", sizeof(value)); | |
1222 | if (strstr(pdl, "application/postscript")) | |
1223 | strlcat(value, ",PS", sizeof(value)); | |
1224 | if (strstr(pdl, "application/vnd.hp-PCL")) | |
1225 | strlcat(value, ",PCL", sizeof(value)); | |
1226 | for (ptr = strstr(pdl, "image/"); ptr; ptr = strstr(ptr, "image/")) | |
1227 | { | |
1228 | char *valptr = value + strlen(value); | |
1229 | /* Pointer into value */ | |
1230 | ||
1231 | if (valptr < (value + sizeof(value) - 1)) | |
1232 | *valptr++ = ','; | |
1233 | ||
1234 | ptr += 6; | |
1235 | while (isalnum(*ptr & 255) || *ptr == '-' || *ptr == '.') | |
1236 | { | |
1237 | if (isalnum(*ptr & 255) && valptr < (value + sizeof(value) - 1)) | |
1238 | *valptr++ = toupper(*ptr++ & 255); | |
1239 | else | |
1240 | break; | |
1241 | } | |
1242 | ||
1243 | *valptr = '\0'; | |
1244 | } | |
1245 | ||
1246 | ptr = device_id + strlen(device_id); | |
1247 | snprintf(ptr, sizeof(device_id) - (ptr - device_id), "CMD:%s;", | |
1248 | value + 1); | |
1249 | } | |
1250 | ||
f3c17241 MS |
1251 | if (device_id[0]) |
1252 | device->device_id = strdup(device_id); | |
1253 | else | |
1254 | device->device_id = NULL; | |
7a14d768 | 1255 | |
f3c17241 MS |
1256 | if (device->make_and_model) |
1257 | free(device->make_and_model); | |
7a14d768 | 1258 | |
f3c17241 MS |
1259 | if (make_and_model[0]) |
1260 | { | |
1261 | strlcat(make_and_model, " ", sizeof(make_and_model)); | |
1262 | strlcat(make_and_model, model, sizeof(make_and_model)); | |
238c3832 | 1263 | |
f3c17241 | 1264 | device->make_and_model = strdup(make_and_model); |
7a14d768 | 1265 | } |
f3c17241 MS |
1266 | else |
1267 | device->make_and_model = strdup(model); | |
7a14d768 | 1268 | } |
f3c17241 | 1269 | #endif /* HAVE_DNSSD || HAVE_AVAHI */ |
7a14d768 MS |
1270 | |
1271 | ||
38e73f87 | 1272 | /* |
f3c17241 | 1273 | * 'sigterm_handler()' - Handle termination signals. |
38e73f87 MS |
1274 | */ |
1275 | ||
1276 | static void | |
1277 | sigterm_handler(int sig) /* I - Signal number (unused) */ | |
1278 | { | |
321d8d57 MS |
1279 | (void)sig; |
1280 | ||
e07d4801 MS |
1281 | if (job_canceled) |
1282 | exit(CUPS_BACKEND_OK); | |
1283 | else | |
1284 | job_canceled = 1; | |
38e73f87 MS |
1285 | } |
1286 | ||
1287 | ||
7a14d768 MS |
1288 | /* |
1289 | * 'unquote()' - Unquote a name string. | |
1290 | */ | |
1291 | ||
1292 | static void | |
1293 | unquote(char *dst, /* I - Destination buffer */ | |
1294 | const char *src, /* I - Source string */ | |
1295 | size_t dstsize) /* I - Size of destination buffer */ | |
1296 | { | |
1297 | char *dstend = dst + dstsize - 1; /* End of destination buffer */ | |
1298 | ||
1299 | ||
1300 | while (*src && dst < dstend) | |
1301 | { | |
1302 | if (*src == '\\') | |
1303 | { | |
1304 | src ++; | |
1305 | if (isdigit(src[0] & 255) && isdigit(src[1] & 255) && | |
1306 | isdigit(src[2] & 255)) | |
1307 | { | |
1308 | *dst++ = ((((src[0] - '0') * 10) + src[1] - '0') * 10) + src[2] - '0'; | |
1309 | src += 3; | |
1310 | } | |
1311 | else | |
1312 | *dst++ = *src++; | |
1313 | } | |
1314 | else | |
1315 | *dst++ = *src ++; | |
1316 | } | |
1317 | ||
1318 | *dst = '\0'; | |
1319 | } | |
1320 | ||
1321 | ||
1322 | /* | |
1323 | * End of "$Id$". | |
1324 | */ |