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License change: Apache License, Version 2.0.
[thirdparty/cups.git] / scheduler / dirsvc.c
1 /*
2 * Directory services routines for the CUPS scheduler.
3 *
4 * Copyright 2007-2017 by Apple Inc.
5 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
6 *
7 * Licensed under Apache License v2.0. See the file "LICENSE" for more information.
8 */
9
10 /*
11 * Include necessary headers...
12 */
13
14 #include "cupsd.h"
15 #include <grp.h>
16
17 #if defined(HAVE_DNSSD) && defined(__APPLE__)
18 # include <nameser.h>
19 # include <CoreFoundation/CoreFoundation.h>
20 # include <SystemConfiguration/SystemConfiguration.h>
21 #endif /* HAVE_DNSSD && __APPLE__ */
22
23
24 /*
25 * Local globals...
26 */
27
28 #ifdef HAVE_AVAHI
29 static int avahi_running = 0;
30 #endif /* HAVE_AVAHI */
31
32
33 /*
34 * Local functions...
35 */
36
37 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
38 static char *get_auth_info_required(cupsd_printer_t *p,
39 char *buffer, size_t bufsize);
40 #endif /* HAVE_DNSSD || HAVE_AVAHI */
41 #ifdef __APPLE__
42 static int get_hostconfig(const char *name);
43 #endif /* __APPLE__ */
44 static void update_lpd(int onoff);
45 static void update_smb(int onoff);
46
47
48 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
49 # ifdef __APPLE__
50 static void dnssdAddAlias(const void *key, const void *value,
51 void *context);
52 # endif /* __APPLE__ */
53 static cupsd_txt_t dnssdBuildTxtRecord(cupsd_printer_t *p, int for_lpd);
54 # ifdef HAVE_AVAHI
55 static void dnssdClientCallback(AvahiClient *c, AvahiClientState state, void *userdata);
56 # endif /* HAVE_AVAHI */
57 static void dnssdDeregisterAllPrinters(int from_callback);
58 static void dnssdDeregisterInstance(cupsd_srv_t *srv, int from_callback);
59 static void dnssdDeregisterPrinter(cupsd_printer_t *p, int clear_name, int from_callback);
60 static const char *dnssdErrorString(int error);
61 static void dnssdFreeTxtRecord(cupsd_txt_t *txt);
62 static void dnssdRegisterAllPrinters(int from_callback);
63 # ifdef HAVE_DNSSD
64 static void dnssdRegisterCallback(DNSServiceRef sdRef,
65 DNSServiceFlags flags,
66 DNSServiceErrorType errorCode,
67 const char *name,
68 const char *regtype,
69 const char *domain,
70 void *context);
71 # else
72 static void dnssdRegisterCallback(AvahiEntryGroup *p,
73 AvahiEntryGroupState state,
74 void *context);
75 # endif /* HAVE_DNSSD */
76 static int dnssdRegisterInstance(cupsd_srv_t *srv, cupsd_printer_t *p, char *name, const char *type, const char *subtypes, int port, cupsd_txt_t *txt, int commit, int from_callback);
77 static void dnssdRegisterPrinter(cupsd_printer_t *p, int from_callback);
78 static void dnssdStop(void);
79 # ifdef HAVE_DNSSD
80 static void dnssdUpdate(void);
81 # endif /* HAVE_DNSSD */
82 static void dnssdUpdateDNSSDName(int from_callback);
83 #endif /* HAVE_DNSSD || HAVE_AVAHI */
84
85
86 /*
87 * 'cupsdDeregisterPrinter()' - Stop sending broadcast information for a
88 * local printer and remove any pending
89 * references to remote printers.
90 */
91
92 void
93 cupsdDeregisterPrinter(
94 cupsd_printer_t *p, /* I - Printer to register */
95 int removeit) /* I - Printer being permanently removed */
96 {
97 /*
98 * Only deregister if browsing is enabled and it's a local printer...
99 */
100
101 cupsdLogMessage(CUPSD_LOG_DEBUG,
102 "cupsdDeregisterPrinter(p=%p(%s), removeit=%d)", p, p->name,
103 removeit);
104
105 if (!Browsing || !p->shared ||
106 (p->type & (CUPS_PRINTER_REMOTE | CUPS_PRINTER_SCANNER)))
107 return;
108
109 /*
110 * Announce the deletion...
111 */
112
113 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
114 if (removeit && (BrowseLocalProtocols & BROWSE_DNSSD) && DNSSDMaster)
115 dnssdDeregisterPrinter(p, 1, 0);
116 #endif /* HAVE_DNSSD || HAVE_AVAHI */
117 }
118
119
120 /*
121 * 'cupsdRegisterPrinter()' - Start sending broadcast information for a
122 * printer or update the broadcast contents.
123 */
124
125 void
126 cupsdRegisterPrinter(cupsd_printer_t *p)/* I - Printer */
127 {
128 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdRegisterPrinter(p=%p(%s))", p,
129 p->name);
130
131 if (!Browsing || !BrowseLocalProtocols ||
132 (p->type & (CUPS_PRINTER_REMOTE | CUPS_PRINTER_SCANNER)))
133 return;
134
135 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
136 if ((BrowseLocalProtocols & BROWSE_DNSSD) && DNSSDMaster)
137 dnssdRegisterPrinter(p, 0);
138 #endif /* HAVE_DNSSD || HAVE_AVAHI */
139 }
140
141
142 /*
143 * 'cupsdStartBrowsing()' - Start sending and receiving broadcast information.
144 */
145
146 void
147 cupsdStartBrowsing(void)
148 {
149 if (!Browsing || !BrowseLocalProtocols)
150 return;
151
152 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
153 if (BrowseLocalProtocols & BROWSE_DNSSD)
154 {
155 # ifdef HAVE_DNSSD
156 DNSServiceErrorType error; /* Error from service creation */
157
158 /*
159 * First create a "master" connection for all registrations...
160 */
161
162 if ((error = DNSServiceCreateConnection(&DNSSDMaster))
163 != kDNSServiceErr_NoError)
164 {
165 cupsdLogMessage(CUPSD_LOG_ERROR,
166 "Unable to create master DNS-SD reference: %d", error);
167
168 if (FatalErrors & CUPSD_FATAL_BROWSE)
169 cupsdEndProcess(getpid(), 0);
170 }
171 else
172 {
173 /*
174 * Add the master connection to the select list...
175 */
176
177 int fd = DNSServiceRefSockFD(DNSSDMaster);
178
179 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
180
181 cupsdAddSelect(fd, (cupsd_selfunc_t)dnssdUpdate, NULL, NULL);
182 }
183
184 /*
185 * Set the computer name and register the web interface...
186 */
187
188 DNSSDPort = 0;
189 cupsdUpdateDNSSDName();
190
191 # else /* HAVE_AVAHI */
192 if ((DNSSDMaster = avahi_threaded_poll_new()) == NULL)
193 {
194 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create DNS-SD thread.");
195
196 if (FatalErrors & CUPSD_FATAL_BROWSE)
197 cupsdEndProcess(getpid(), 0);
198 }
199 else
200 {
201 int error; /* Error code, if any */
202
203 DNSSDClient = avahi_client_new(avahi_threaded_poll_get(DNSSDMaster), AVAHI_CLIENT_NO_FAIL, dnssdClientCallback, NULL, &error);
204
205 if (DNSSDClient == NULL)
206 {
207 cupsdLogMessage(CUPSD_LOG_ERROR,
208 "Unable to communicate with avahi-daemon: %s",
209 dnssdErrorString(error));
210
211 if (FatalErrors & CUPSD_FATAL_BROWSE)
212 cupsdEndProcess(getpid(), 0);
213
214 avahi_threaded_poll_free(DNSSDMaster);
215 DNSSDMaster = NULL;
216 }
217 else
218 avahi_threaded_poll_start(DNSSDMaster);
219 }
220 # endif /* HAVE_DNSSD */
221 }
222 #endif /* HAVE_DNSSD || HAVE_AVAHI */
223
224 /*
225 * Enable LPD and SMB printer sharing as needed through external programs...
226 */
227
228 if (BrowseLocalProtocols & BROWSE_LPD)
229 update_lpd(1);
230
231 if (BrowseLocalProtocols & BROWSE_SMB)
232 update_smb(1);
233
234 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
235 /*
236 * Register the individual printers
237 */
238
239 dnssdRegisterAllPrinters(0);
240 #endif /* HAVE_DNSSD || HAVE_AVAHI */
241 }
242
243
244 /*
245 * 'cupsdStopBrowsing()' - Stop sending and receiving broadcast information.
246 */
247
248 void
249 cupsdStopBrowsing(void)
250 {
251 if (!Browsing || !BrowseLocalProtocols)
252 return;
253
254 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
255 /*
256 * De-register the individual printers
257 */
258
259 dnssdDeregisterAllPrinters(0);
260
261 /*
262 * Shut down browsing sockets...
263 */
264
265 if ((BrowseLocalProtocols & BROWSE_DNSSD) && DNSSDMaster)
266 dnssdStop();
267 #endif /* HAVE_DNSSD || HAVE_AVAHI */
268
269 /*
270 * Disable LPD and SMB printer sharing as needed through external programs...
271 */
272
273 if (BrowseLocalProtocols & BROWSE_LPD)
274 update_lpd(0);
275
276 if (BrowseLocalProtocols & BROWSE_SMB)
277 update_smb(0);
278 }
279
280
281 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
282 /*
283 * 'cupsdUpdateDNSSDName()' - Update the computer name we use for browsing...
284 */
285
286 void
287 cupsdUpdateDNSSDName(void)
288 {
289 dnssdUpdateDNSSDName(0);
290 }
291
292
293 # ifdef __APPLE__
294 /*
295 * 'dnssdAddAlias()' - Add a DNS-SD alias name.
296 */
297
298 static void
299 dnssdAddAlias(const void *key, /* I - Key */
300 const void *value, /* I - Value (domain) */
301 void *context) /* I - Unused */
302 {
303 char valueStr[1024], /* Domain string */
304 hostname[1024], /* Complete hostname */
305 *hostptr; /* Pointer into hostname */
306
307
308 (void)key;
309 (void)context;
310
311 if (CFGetTypeID((CFStringRef)value) == CFStringGetTypeID() &&
312 CFStringGetCString((CFStringRef)value, valueStr, sizeof(valueStr),
313 kCFStringEncodingUTF8))
314 {
315 snprintf(hostname, sizeof(hostname), "%s.%s", DNSSDHostName, valueStr);
316 hostptr = hostname + strlen(hostname) - 1;
317 if (*hostptr == '.')
318 *hostptr = '\0'; /* Strip trailing dot */
319
320 if (!DNSSDAlias)
321 DNSSDAlias = cupsArrayNew(NULL, NULL);
322
323 cupsdAddAlias(DNSSDAlias, hostname);
324 cupsdLogMessage(CUPSD_LOG_DEBUG, "Added Back to My Mac ServerAlias %s",
325 hostname);
326 }
327 else
328 cupsdLogMessage(CUPSD_LOG_ERROR,
329 "Bad Back to My Mac domain in dynamic store!");
330 }
331 # endif /* __APPLE__ */
332
333
334 /*
335 * 'dnssdBuildTxtRecord()' - Build a TXT record from printer info.
336 */
337
338 static cupsd_txt_t /* O - TXT record */
339 dnssdBuildTxtRecord(
340 cupsd_printer_t *p, /* I - Printer information */
341 int for_lpd) /* I - 1 = LPD, 0 = IPP */
342 {
343 int i, /* Looping var */
344 count; /* Count of key/value pairs */
345 char admin_hostname[256], /* Hostname for admin page */
346 adminurl_str[256], /* URL for the admin page */
347 type_str[32], /* Type to string buffer */
348 state_str[32], /* State to string buffer */
349 rp_str[1024], /* Queue name string buffer */
350 air_str[1024], /* auth-info-required string buffer */
351 *keyvalue[32][2], /* Table of key/value pairs */
352 *ptr; /* Pointer in string */
353 cupsd_txt_t txt; /* TXT record */
354 cupsd_listener_t *lis; /* Current listener */
355 const char *admin_scheme = "http"; /* Admin page URL scheme */
356
357
358 /*
359 * Load up the key value pairs...
360 */
361
362 count = 0;
363
364 if (!for_lpd || (BrowseLocalProtocols & BROWSE_LPD))
365 {
366 keyvalue[count ][0] = "txtvers";
367 keyvalue[count++][1] = "1";
368
369 keyvalue[count ][0] = "qtotal";
370 keyvalue[count++][1] = "1";
371
372 keyvalue[count ][0] = "rp";
373 keyvalue[count++][1] = rp_str;
374 if (for_lpd)
375 strlcpy(rp_str, p->name, sizeof(rp_str));
376 else
377 snprintf(rp_str, sizeof(rp_str), "%s/%s",
378 (p->type & CUPS_PRINTER_CLASS) ? "classes" : "printers",
379 p->name);
380
381 keyvalue[count ][0] = "ty";
382 keyvalue[count++][1] = p->make_model ? p->make_model : "Unknown";
383
384 /*
385 * Get the hostname for the admin page...
386 */
387
388 if (strchr(DNSSDHostName, '.'))
389 {
390 /*
391 * Use the provided hostname, but make sure it ends with a period...
392 */
393
394 if ((ptr = DNSSDHostName + strlen(DNSSDHostName) - 1) >= DNSSDHostName && *ptr == '.')
395 strlcpy(admin_hostname, DNSSDHostName, sizeof(admin_hostname));
396 else
397 snprintf(admin_hostname, sizeof(admin_hostname), "%s.", DNSSDHostName);
398 }
399 else
400 {
401 /*
402 * Unqualified hostname gets ".local." added to it...
403 */
404
405 snprintf(admin_hostname, sizeof(admin_hostname), "%s.local.", DNSSDHostName);
406 }
407
408 /*
409 * Get the URL scheme for the admin page...
410 */
411
412 # ifdef HAVE_SSL
413 for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); lis; lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
414 {
415 if (lis->encryption != HTTP_ENCRYPTION_NEVER)
416 {
417 admin_scheme = "https";
418 break;
419 }
420 }
421 # endif /* HAVE_SSL */
422
423 httpAssembleURIf(HTTP_URI_CODING_ALL, adminurl_str, sizeof(adminurl_str), admin_scheme, NULL, admin_hostname, DNSSDPort, "/%s/%s", (p->type & CUPS_PRINTER_CLASS) ? "classes" : "printers", p->name);
424 keyvalue[count ][0] = "adminurl";
425 keyvalue[count++][1] = adminurl_str;
426
427 if (p->location)
428 {
429 keyvalue[count ][0] = "note";
430 keyvalue[count++][1] = p->location;
431 }
432
433 keyvalue[count ][0] = "priority";
434 keyvalue[count++][1] = for_lpd ? "100" : "0";
435
436 keyvalue[count ][0] = "product";
437 keyvalue[count++][1] = p->pc && p->pc->product ? p->pc->product : "Unknown";
438
439 keyvalue[count ][0] = "pdl";
440 keyvalue[count++][1] = p->pdl ? p->pdl : "application/postscript";
441
442 if (get_auth_info_required(p, air_str, sizeof(air_str)))
443 {
444 keyvalue[count ][0] = "air";
445 keyvalue[count++][1] = air_str;
446 }
447
448 keyvalue[count ][0] = "UUID";
449 keyvalue[count++][1] = p->uuid + 9;
450
451 #ifdef HAVE_SSL
452 keyvalue[count ][0] = "TLS";
453 keyvalue[count++][1] = "1.2";
454 #endif /* HAVE_SSL */
455
456 if (p->type & CUPS_PRINTER_FAX)
457 {
458 keyvalue[count ][0] = "Fax";
459 keyvalue[count++][1] = "T";
460 keyvalue[count ][0] = "rfo";
461 keyvalue[count++][1] = rp_str;
462 }
463
464 if (p->type & CUPS_PRINTER_COLOR)
465 {
466 keyvalue[count ][0] = "Color";
467 keyvalue[count++][1] = (p->type & CUPS_PRINTER_COLOR) ? "T" : "F";
468 }
469
470 if (p->type & CUPS_PRINTER_DUPLEX)
471 {
472 keyvalue[count ][0] = "Duplex";
473 keyvalue[count++][1] = (p->type & CUPS_PRINTER_DUPLEX) ? "T" : "F";
474 }
475
476 if (p->type & CUPS_PRINTER_STAPLE)
477 {
478 keyvalue[count ][0] = "Staple";
479 keyvalue[count++][1] = (p->type & CUPS_PRINTER_STAPLE) ? "T" : "F";
480 }
481
482 if (p->type & CUPS_PRINTER_COPIES)
483 {
484 keyvalue[count ][0] = "Copies";
485 keyvalue[count++][1] = (p->type & CUPS_PRINTER_COPIES) ? "T" : "F";
486 }
487
488 if (p->type & CUPS_PRINTER_COLLATE)
489 {
490 keyvalue[count ][0] = "Collate";
491 keyvalue[count++][1] = (p->type & CUPS_PRINTER_COLLATE) ? "T" : "F";
492 }
493
494 if (p->type & CUPS_PRINTER_PUNCH)
495 {
496 keyvalue[count ][0] = "Punch";
497 keyvalue[count++][1] = (p->type & CUPS_PRINTER_PUNCH) ? "T" : "F";
498 }
499
500 if (p->type & CUPS_PRINTER_BIND)
501 {
502 keyvalue[count ][0] = "Bind";
503 keyvalue[count++][1] = (p->type & CUPS_PRINTER_BIND) ? "T" : "F";
504 }
505
506 if (p->type & CUPS_PRINTER_SORT)
507 {
508 keyvalue[count ][0] = "Sort";
509 keyvalue[count++][1] = (p->type & CUPS_PRINTER_SORT) ? "T" : "F";
510 }
511
512 if (p->type & CUPS_PRINTER_MFP)
513 {
514 keyvalue[count ][0] = "Scan";
515 keyvalue[count++][1] = (p->type & CUPS_PRINTER_MFP) ? "T" : "F";
516 }
517
518 snprintf(type_str, sizeof(type_str), "0x%X", p->type | CUPS_PRINTER_REMOTE);
519 snprintf(state_str, sizeof(state_str), "%d", p->state);
520
521 keyvalue[count ][0] = "printer-state";
522 keyvalue[count++][1] = state_str;
523
524 keyvalue[count ][0] = "printer-type";
525 keyvalue[count++][1] = type_str;
526 }
527
528 /*
529 * Then pack them into a proper txt record...
530 */
531
532 # ifdef HAVE_DNSSD
533 TXTRecordCreate(&txt, 0, NULL);
534
535 for (i = 0; i < count; i ++)
536 {
537 size_t len = strlen(keyvalue[i][1]);
538
539 if (len < 256)
540 TXTRecordSetValue(&txt, keyvalue[i][0], (uint8_t)len, keyvalue[i][1]);
541 }
542
543 # else
544 for (i = 0, txt = NULL; i < count; i ++)
545 txt = avahi_string_list_add_printf(txt, "%s=%s", keyvalue[i][0],
546 keyvalue[i][1]);
547 # endif /* HAVE_DNSSD */
548
549 return (txt);
550 }
551
552
553 # ifdef HAVE_AVAHI
554 /*
555 * 'dnssdClientCallback()' - Client callback for Avahi.
556 *
557 * Called whenever the client or server state changes...
558 */
559
560 static void
561 dnssdClientCallback(
562 AvahiClient *c, /* I - Client */
563 AvahiClientState state, /* I - Current state */
564 void *userdata) /* I - User data (unused) */
565 {
566 int error; /* Error code, if any */
567
568
569 (void)userdata;
570
571 if (!c)
572 return;
573
574 /*
575 * Make sure DNSSDClient is already set also if this callback function is
576 * already running before avahi_client_new() in dnssdStartBrowsing()
577 * finishes.
578 */
579
580 if (!DNSSDClient)
581 DNSSDClient = c;
582
583 switch (state)
584 {
585 case AVAHI_CLIENT_S_REGISTERING:
586 case AVAHI_CLIENT_S_RUNNING:
587 case AVAHI_CLIENT_S_COLLISION:
588 cupsdLogMessage(CUPSD_LOG_DEBUG, "Avahi server connection now available, registering printers for Bonjour broadcasting.");
589
590 /*
591 * Mark that Avahi server is running...
592 */
593
594 avahi_running = 1;
595
596 /*
597 * Set the computer name and register the web interface...
598 */
599
600 DNSSDPort = 0;
601 dnssdUpdateDNSSDName(1);
602
603 /*
604 * Register the individual printers
605 */
606
607 dnssdRegisterAllPrinters(1);
608 break;
609
610 case AVAHI_CLIENT_FAILURE:
611 if (avahi_client_errno(c) == AVAHI_ERR_DISCONNECTED)
612 {
613 cupsdLogMessage(CUPSD_LOG_DEBUG, "Avahi server disappeared, unregistering printers for Bonjour broadcasting.");
614
615 /*
616 * Unregister everything and close the client...
617 */
618
619 dnssdDeregisterAllPrinters(1);
620 dnssdDeregisterInstance(&WebIFSrv, 1);
621 avahi_client_free(DNSSDClient);
622 DNSSDClient = NULL;
623
624 /*
625 * Mark that Avahi server is not running...
626 */
627
628 avahi_running = 0;
629
630 /*
631 * Renew Avahi client...
632 */
633
634 DNSSDClient = avahi_client_new(avahi_threaded_poll_get(DNSSDMaster), AVAHI_CLIENT_NO_FAIL, dnssdClientCallback, NULL, &error);
635
636 if (!DNSSDClient)
637 {
638 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to communicate with avahi-daemon: %s", dnssdErrorString(error));
639 if (FatalErrors & CUPSD_FATAL_BROWSE)
640 cupsdEndProcess(getpid(), 0);
641 }
642 }
643 else
644 {
645 cupsdLogMessage(CUPSD_LOG_ERROR, "Communication with avahi-daemon has failed: %s", avahi_strerror(avahi_client_errno(c)));
646 if (FatalErrors & CUPSD_FATAL_BROWSE)
647 cupsdEndProcess(getpid(), 0);
648 }
649 break;
650
651 default:
652 break;
653 }
654 }
655 # endif /* HAVE_AVAHI */
656
657
658 /*
659 * 'dnssdDeregisterAllPrinters()' - Deregister all printers.
660 */
661
662 static void
663 dnssdDeregisterAllPrinters(
664 int from_callback) /* I - Deregistering because of callback? */
665 {
666 cupsd_printer_t *p; /* Current printer */
667
668
669 if (!DNSSDMaster)
670 return;
671
672 for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
673 p;
674 p = (cupsd_printer_t *)cupsArrayNext(Printers))
675 if (!(p->type & (CUPS_PRINTER_REMOTE | CUPS_PRINTER_SCANNER)))
676 dnssdDeregisterPrinter(p, 1, from_callback);
677 }
678
679
680 /*
681 * 'dnssdDeregisterInstance()' - Deregister a DNS-SD service instance.
682 */
683
684 static void
685 dnssdDeregisterInstance(
686 cupsd_srv_t *srv, /* I - Service */
687 int from_callback) /* I - Called from callback? */
688 {
689 if (!srv || !*srv)
690 return;
691
692 # ifdef HAVE_DNSSD
693 (void)from_callback;
694
695 DNSServiceRefDeallocate(*srv);
696
697 # else /* HAVE_AVAHI */
698 if (*srv)
699 {
700 if (!from_callback)
701 avahi_threaded_poll_lock(DNSSDMaster);
702
703 avahi_entry_group_free(*srv);
704
705 if (!from_callback)
706 avahi_threaded_poll_unlock(DNSSDMaster);
707 }
708 # endif /* HAVE_DNSSD */
709
710 *srv = NULL;
711 }
712
713
714 /*
715 * 'dnssdDeregisterPrinter()' - Deregister all services for a printer.
716 */
717
718 static void
719 dnssdDeregisterPrinter(
720 cupsd_printer_t *p, /* I - Printer */
721 int clear_name, /* I - Clear the name? */
722 int from_callback) /* I - Called from callback? */
723
724 {
725 cupsdLogMessage(CUPSD_LOG_DEBUG2,
726 "dnssdDeregisterPrinter(p=%p(%s), clear_name=%d)", p, p->name,
727 clear_name);
728
729 if (p->ipp_srv)
730 {
731 dnssdDeregisterInstance(&p->ipp_srv, from_callback);
732
733 # ifdef HAVE_DNSSD
734 # ifdef HAVE_SSL
735 dnssdDeregisterInstance(&p->ipps_srv, from_callback);
736 # endif /* HAVE_SSL */
737 dnssdDeregisterInstance(&p->printer_srv, from_callback);
738 # endif /* HAVE_DNSSD */
739 }
740
741 /*
742 * Remove the printer from the array of DNS-SD printers but keep the
743 * registered name...
744 */
745
746 cupsArrayRemove(DNSSDPrinters, p);
747
748 /*
749 * Optionally clear the service name...
750 */
751
752 if (clear_name)
753 cupsdClearString(&p->reg_name);
754 }
755
756
757 /*
758 * 'dnssdErrorString()' - Return an error string for an error code.
759 */
760
761 static const char * /* O - Error message */
762 dnssdErrorString(int error) /* I - Error number */
763 {
764 # ifdef HAVE_DNSSD
765 switch (error)
766 {
767 case kDNSServiceErr_NoError :
768 return ("OK.");
769
770 default :
771 case kDNSServiceErr_Unknown :
772 return ("Unknown error.");
773
774 case kDNSServiceErr_NoSuchName :
775 return ("Service not found.");
776
777 case kDNSServiceErr_NoMemory :
778 return ("Out of memory.");
779
780 case kDNSServiceErr_BadParam :
781 return ("Bad parameter.");
782
783 case kDNSServiceErr_BadReference :
784 return ("Bad service reference.");
785
786 case kDNSServiceErr_BadState :
787 return ("Bad state.");
788
789 case kDNSServiceErr_BadFlags :
790 return ("Bad flags.");
791
792 case kDNSServiceErr_Unsupported :
793 return ("Unsupported.");
794
795 case kDNSServiceErr_NotInitialized :
796 return ("Not initialized.");
797
798 case kDNSServiceErr_AlreadyRegistered :
799 return ("Already registered.");
800
801 case kDNSServiceErr_NameConflict :
802 return ("Name conflict.");
803
804 case kDNSServiceErr_Invalid :
805 return ("Invalid name.");
806
807 case kDNSServiceErr_Firewall :
808 return ("Firewall prevents registration.");
809
810 case kDNSServiceErr_Incompatible :
811 return ("Client library incompatible.");
812
813 case kDNSServiceErr_BadInterfaceIndex :
814 return ("Bad interface index.");
815
816 case kDNSServiceErr_Refused :
817 return ("Server prevents registration.");
818
819 case kDNSServiceErr_NoSuchRecord :
820 return ("Record not found.");
821
822 case kDNSServiceErr_NoAuth :
823 return ("Authentication required.");
824
825 case kDNSServiceErr_NoSuchKey :
826 return ("Encryption key not found.");
827
828 case kDNSServiceErr_NATTraversal :
829 return ("Unable to traverse NAT boundary.");
830
831 case kDNSServiceErr_DoubleNAT :
832 return ("Unable to traverse double-NAT boundary.");
833
834 case kDNSServiceErr_BadTime :
835 return ("Bad system time.");
836
837 case kDNSServiceErr_BadSig :
838 return ("Bad signature.");
839
840 case kDNSServiceErr_BadKey :
841 return ("Bad encryption key.");
842
843 case kDNSServiceErr_Transient :
844 return ("Transient error occurred - please try again.");
845
846 case kDNSServiceErr_ServiceNotRunning :
847 return ("Server not running.");
848
849 case kDNSServiceErr_NATPortMappingUnsupported :
850 return ("NAT doesn't support NAT-PMP or UPnP.");
851
852 case kDNSServiceErr_NATPortMappingDisabled :
853 return ("NAT supports NAT-PNP or UPnP but it is disabled.");
854
855 case kDNSServiceErr_NoRouter :
856 return ("No Internet/default router configured.");
857
858 case kDNSServiceErr_PollingMode :
859 return ("Service polling mode error.");
860
861 case kDNSServiceErr_Timeout :
862 return ("Service timeout.");
863 }
864
865 # else /* HAVE_AVAHI */
866 return (avahi_strerror(error));
867 # endif /* HAVE_DNSSD */
868 }
869
870
871 /*
872 * 'dnssdRegisterCallback()' - Free a TXT record.
873 */
874
875 static void
876 dnssdFreeTxtRecord(cupsd_txt_t *txt) /* I - TXT record */
877 {
878 # ifdef HAVE_DNSSD
879 TXTRecordDeallocate(txt);
880
881 # else /* HAVE_AVAHI */
882 avahi_string_list_free(*txt);
883 *txt = NULL;
884 # endif /* HAVE_DNSSD */
885 }
886
887
888 /*
889 * 'dnssdRegisterAllPrinters()' - Register all printers.
890 */
891
892 static void
893 dnssdRegisterAllPrinters(int from_callback) /* I - Called from callback? */
894 {
895 cupsd_printer_t *p; /* Current printer */
896
897
898 if (!DNSSDMaster)
899 return;
900
901 for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
902 p;
903 p = (cupsd_printer_t *)cupsArrayNext(Printers))
904 if (!(p->type & (CUPS_PRINTER_REMOTE | CUPS_PRINTER_SCANNER)))
905 dnssdRegisterPrinter(p, from_callback);
906 }
907
908
909 /*
910 * 'dnssdRegisterCallback()' - DNSServiceRegister callback.
911 */
912
913 # ifdef HAVE_DNSSD
914 static void
915 dnssdRegisterCallback(
916 DNSServiceRef sdRef, /* I - DNS Service reference */
917 DNSServiceFlags flags, /* I - Reserved for future use */
918 DNSServiceErrorType errorCode, /* I - Error code */
919 const char *name, /* I - Service name */
920 const char *regtype, /* I - Service type */
921 const char *domain, /* I - Domain. ".local" for now */
922 void *context) /* I - Printer */
923 {
924 cupsd_printer_t *p = (cupsd_printer_t *)context;
925 /* Current printer */
926
927
928 (void)sdRef;
929 (void)flags;
930 (void)domain;
931
932 cupsdLogMessage(CUPSD_LOG_DEBUG2, "dnssdRegisterCallback(%s, %s) for %s (%s)",
933 name, regtype, p ? p->name : "Web Interface",
934 p ? (p->reg_name ? p->reg_name : "(null)") : "NA");
935
936 if (errorCode)
937 {
938 cupsdLogMessage(CUPSD_LOG_ERROR,
939 "DNSServiceRegister failed with error %d", (int)errorCode);
940 return;
941 }
942 else if (p && (!p->reg_name || _cups_strcasecmp(name, p->reg_name)))
943 {
944 cupsdLogMessage(CUPSD_LOG_INFO, "Using service name \"%s\" for \"%s\"",
945 name, p->name);
946
947 cupsArrayRemove(DNSSDPrinters, p);
948 cupsdSetString(&p->reg_name, name);
949 cupsArrayAdd(DNSSDPrinters, p);
950
951 LastEvent |= CUPSD_EVENT_PRINTER_MODIFIED;
952 }
953 }
954
955 # else /* HAVE_AVAHI */
956 static void
957 dnssdRegisterCallback(
958 AvahiEntryGroup *srv, /* I - Service */
959 AvahiEntryGroupState state, /* I - Registration state */
960 void *context) /* I - Printer */
961 {
962 cupsd_printer_t *p = (cupsd_printer_t *)context;
963 /* Current printer */
964
965 cupsdLogMessage(CUPSD_LOG_DEBUG2,
966 "dnssdRegisterCallback(srv=%p, state=%d, context=%p) "
967 "for %s (%s)", srv, state, context,
968 p ? p->name : "Web Interface",
969 p ? (p->reg_name ? p->reg_name : "(null)") : "NA");
970
971 /* TODO: Handle collisions with avahi_alternate_service_name(p->reg_name)? */
972 }
973 # endif /* HAVE_DNSSD */
974
975
976 /*
977 * 'dnssdRegisterInstance()' - Register an instance of a printer service.
978 */
979
980 static int /* O - 1 on success, 0 on failure */
981 dnssdRegisterInstance(
982 cupsd_srv_t *srv, /* O - Service */
983 cupsd_printer_t *p, /* I - Printer */
984 char *name, /* I - DNS-SD service name */
985 const char *type, /* I - DNS-SD service type */
986 const char *subtypes, /* I - Subtypes to register or NULL */
987 int port, /* I - Port number or 0 */
988 cupsd_txt_t *txt, /* I - TXT record */
989 int commit, /* I - Commit registration? */
990 int from_callback) /* I - Called from callback? */
991 {
992 char temp[256], /* Temporary string */
993 *ptr; /* Pointer into string */
994 int error; /* Any error */
995
996
997 # ifdef HAVE_DNSSD
998 (void)from_callback;
999 # endif /* HAVE_DNSSD */
1000
1001 cupsdLogMessage(CUPSD_LOG_DEBUG, "Registering \"%s\" with DNS-SD type \"%s\".", name, type);
1002
1003 if (p && !srv)
1004 {
1005 /*
1006 * Assign the correct pointer for "srv"...
1007 */
1008
1009 # ifdef HAVE_DNSSD
1010 if (!strcmp(type, "_printer._tcp"))
1011 srv = &p->printer_srv; /* Target LPD service */
1012 # ifdef HAVE_SSL
1013 else if (!strcmp(type, "_ipps._tcp"))
1014 srv = &p->ipps_srv; /* Target IPPS service */
1015 # endif /* HAVE_SSL */
1016 else
1017 srv = &p->ipp_srv; /* Target IPP service */
1018
1019 # else /* HAVE_AVAHI */
1020 srv = &p->ipp_srv; /* Target service group */
1021 # endif /* HAVE_DNSSD */
1022 }
1023
1024 # ifdef HAVE_DNSSD
1025 (void)commit;
1026
1027 # else /* HAVE_AVAHI */
1028 if (!from_callback)
1029 avahi_threaded_poll_lock(DNSSDMaster);
1030
1031 if (!*srv)
1032 *srv = avahi_entry_group_new(DNSSDClient, dnssdRegisterCallback, NULL);
1033 if (!*srv)
1034 {
1035 if (!from_callback)
1036 avahi_threaded_poll_unlock(DNSSDMaster);
1037
1038 cupsdLogMessage(CUPSD_LOG_WARN, "DNS-SD registration of \"%s\" failed: %s",
1039 name, dnssdErrorString(avahi_client_errno(DNSSDClient)));
1040 return (0);
1041 }
1042 # endif /* HAVE_DNSSD */
1043
1044 /*
1045 * Make sure the name is <= 63 octets, and when we truncate be sure to
1046 * properly truncate any UTF-8 characters...
1047 */
1048
1049 ptr = name + strlen(name);
1050 while ((ptr - name) > 63)
1051 {
1052 do
1053 {
1054 ptr --;
1055 }
1056 while (ptr > name && (*ptr & 0xc0) == 0x80);
1057
1058 if (ptr > name)
1059 *ptr = '\0';
1060 }
1061
1062 /*
1063 * Register the service...
1064 */
1065
1066 # ifdef HAVE_DNSSD
1067 if (subtypes)
1068 snprintf(temp, sizeof(temp), "%s,%s", type, subtypes);
1069 else
1070 strlcpy(temp, type, sizeof(temp));
1071
1072 *srv = DNSSDMaster;
1073 error = DNSServiceRegister(srv, kDNSServiceFlagsShareConnection,
1074 0, name, temp, NULL, DNSSDHostName, htons(port),
1075 txt ? TXTRecordGetLength(txt) : 0,
1076 txt ? TXTRecordGetBytesPtr(txt) : NULL,
1077 dnssdRegisterCallback, p);
1078
1079 # else /* HAVE_AVAHI */
1080 if (txt)
1081 {
1082 AvahiStringList *temptxt;
1083 for (temptxt = *txt; temptxt; temptxt = temptxt->next)
1084 cupsdLogMessage(CUPSD_LOG_DEBUG, "DNS_SD \"%s\" %s", name, temptxt->text);
1085 }
1086
1087 error = avahi_entry_group_add_service_strlst(*srv, AVAHI_IF_UNSPEC,
1088 AVAHI_PROTO_UNSPEC, 0, name,
1089 type, NULL, DNSSDHostName, port,
1090 txt ? *txt : NULL);
1091 if (error)
1092 cupsdLogMessage(CUPSD_LOG_DEBUG, "DNS-SD service add for \"%s\" failed.",
1093 name);
1094
1095 if (!error && subtypes)
1096 {
1097 /*
1098 * Register all of the subtypes...
1099 */
1100
1101 char *start, /* Start of subtype */
1102 subtype[256]; /* Subtype string */
1103
1104 strlcpy(temp, subtypes, sizeof(temp));
1105
1106 for (start = temp; *start; start = ptr)
1107 {
1108 /*
1109 * Skip leading whitespace...
1110 */
1111
1112 while (*start && isspace(*start & 255))
1113 start ++;
1114
1115 /*
1116 * Grab everything up to the next comma or the end of the string...
1117 */
1118
1119 for (ptr = start; *ptr && *ptr != ','; ptr ++);
1120
1121 if (*ptr)
1122 *ptr++ = '\0';
1123
1124 if (!*start)
1125 break;
1126
1127 /*
1128 * Register the subtype...
1129 */
1130
1131 snprintf(subtype, sizeof(subtype), "%s._sub.%s", start, type);
1132
1133 error = avahi_entry_group_add_service_subtype(*srv, AVAHI_IF_UNSPEC,
1134 AVAHI_PROTO_UNSPEC, 0,
1135 name, type, NULL, subtype);
1136 if (error)
1137 {
1138 cupsdLogMessage(CUPSD_LOG_DEBUG,
1139 "DNS-SD subtype %s registration for \"%s\" failed." ,
1140 subtype, name);
1141 break;
1142 }
1143 }
1144 }
1145
1146 if (!error && commit)
1147 {
1148 if ((error = avahi_entry_group_commit(*srv)) != 0)
1149 cupsdLogMessage(CUPSD_LOG_DEBUG, "DNS-SD commit of \"%s\" failed.",
1150 name);
1151 }
1152
1153 if (!from_callback)
1154 avahi_threaded_poll_unlock(DNSSDMaster);
1155 # endif /* HAVE_DNSSD */
1156
1157 if (error)
1158 {
1159 cupsdLogMessage(CUPSD_LOG_WARN, "DNS-SD registration of \"%s\" failed: %s",
1160 name, dnssdErrorString(error));
1161 cupsdLogMessage(CUPSD_LOG_DEBUG, "DNS-SD type: %s", type);
1162 if (subtypes)
1163 cupsdLogMessage(CUPSD_LOG_DEBUG, "DNS-SD sub-types: %s", subtypes);
1164 }
1165
1166 return (!error);
1167 }
1168
1169
1170 /*
1171 * 'dnssdRegisterPrinter()' - Start sending broadcast information for a printer
1172 * or update the broadcast contents.
1173 */
1174
1175 static void
1176 dnssdRegisterPrinter(
1177 cupsd_printer_t *p, /* I - Printer */
1178 int from_callback) /* I - Called from callback? */
1179 {
1180 char name[256]; /* Service name */
1181 int printer_port; /* LPD port number */
1182 int status; /* Registration status */
1183 cupsd_txt_t ipp_txt, /* IPP(S) TXT record */
1184 printer_txt; /* LPD TXT record */
1185
1186
1187 cupsdLogMessage(CUPSD_LOG_DEBUG2, "dnssdRegisterPrinter(%s) %s", p->name,
1188 !p->ipp_srv ? "new" : "update");
1189
1190 # ifdef HAVE_AVAHI
1191 if (!avahi_running)
1192 return;
1193 # endif /* HAVE_AVAHI */
1194
1195 /*
1196 * Remove the current registrations if we have them and then return if
1197 * per-printer sharing was just disabled...
1198 */
1199
1200 dnssdDeregisterPrinter(p, 0, from_callback);
1201
1202 if (!p->shared)
1203 return;
1204
1205 /*
1206 * Set the registered name as needed; the registered name takes the form of
1207 * "<printer-info> @ <computer name>"...
1208 */
1209
1210 if (!p->reg_name)
1211 {
1212 if (p->info && strlen(p->info) > 0)
1213 {
1214 if (DNSSDComputerName)
1215 snprintf(name, sizeof(name), "%s @ %s", p->info, DNSSDComputerName);
1216 else
1217 strlcpy(name, p->info, sizeof(name));
1218 }
1219 else if (DNSSDComputerName)
1220 snprintf(name, sizeof(name), "%s @ %s", p->name, DNSSDComputerName);
1221 else
1222 strlcpy(name, p->name, sizeof(name));
1223 }
1224 else
1225 strlcpy(name, p->reg_name, sizeof(name));
1226
1227 /*
1228 * Register IPP and LPD...
1229 *
1230 * We always must register the "_printer" service type in order to reserve
1231 * our name, but use port number 0 if we haven't actually configured cups-lpd
1232 * to share via LPD...
1233 */
1234
1235 ipp_txt = dnssdBuildTxtRecord(p, 0);
1236 printer_txt = dnssdBuildTxtRecord(p, 1);
1237
1238 if (BrowseLocalProtocols & BROWSE_LPD)
1239 printer_port = 515;
1240 else
1241 printer_port = 0;
1242
1243 status = dnssdRegisterInstance(NULL, p, name, "_printer._tcp", NULL, printer_port, &printer_txt, 0, from_callback);
1244
1245 # ifdef HAVE_SSL
1246 if (status)
1247 dnssdRegisterInstance(NULL, p, name, "_ipps._tcp", DNSSDSubTypes, DNSSDPort, &ipp_txt, 0, from_callback);
1248 # endif /* HAVE_SSL */
1249
1250 if (status)
1251 {
1252 /*
1253 * Use the "_fax-ipp" service type for fax queues, otherwise use "_ipp"...
1254 */
1255
1256 if (p->type & CUPS_PRINTER_FAX)
1257 status = dnssdRegisterInstance(NULL, p, name, "_fax-ipp._tcp", DNSSDSubTypes, DNSSDPort, &ipp_txt, 1, from_callback);
1258 else
1259 status = dnssdRegisterInstance(NULL, p, name, "_ipp._tcp", DNSSDSubTypes, DNSSDPort, &ipp_txt, 1, from_callback);
1260 }
1261
1262 dnssdFreeTxtRecord(&ipp_txt);
1263 dnssdFreeTxtRecord(&printer_txt);
1264
1265 if (status)
1266 {
1267 /*
1268 * Save the registered name and add the printer to the array of DNS-SD
1269 * printers...
1270 */
1271
1272 cupsdSetString(&p->reg_name, name);
1273 cupsArrayAdd(DNSSDPrinters, p);
1274 }
1275 else
1276 {
1277 /*
1278 * Registration failed for this printer...
1279 */
1280
1281 dnssdDeregisterInstance(&p->ipp_srv, from_callback);
1282
1283 # ifdef HAVE_DNSSD
1284 # ifdef HAVE_SSL
1285 dnssdDeregisterInstance(&p->ipps_srv, from_callback);
1286 # endif /* HAVE_SSL */
1287 dnssdDeregisterInstance(&p->printer_srv, from_callback);
1288 # endif /* HAVE_DNSSD */
1289 }
1290 }
1291
1292
1293 /*
1294 * 'dnssdStop()' - Stop all DNS-SD registrations.
1295 */
1296
1297 static void
1298 dnssdStop(void)
1299 {
1300 cupsd_printer_t *p; /* Current printer */
1301
1302
1303 /*
1304 * De-register the individual printers
1305 */
1306
1307 for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
1308 p;
1309 p = (cupsd_printer_t *)cupsArrayNext(Printers))
1310 dnssdDeregisterPrinter(p, 1, 0);
1311
1312 /*
1313 * Shutdown the rest of the service refs...
1314 */
1315
1316 dnssdDeregisterInstance(&WebIFSrv, 0);
1317
1318 # ifdef HAVE_DNSSD
1319 cupsdRemoveSelect(DNSServiceRefSockFD(DNSSDMaster));
1320
1321 DNSServiceRefDeallocate(DNSSDMaster);
1322 DNSSDMaster = NULL;
1323
1324 # else /* HAVE_AVAHI */
1325 if (DNSSDMaster)
1326 avahi_threaded_poll_stop(DNSSDMaster);
1327
1328 if (DNSSDClient)
1329 {
1330 avahi_client_free(DNSSDClient);
1331 DNSSDClient = NULL;
1332 }
1333
1334 if (DNSSDMaster)
1335 {
1336 avahi_threaded_poll_free(DNSSDMaster);
1337 DNSSDMaster = NULL;
1338 }
1339 # endif /* HAVE_DNSSD */
1340
1341 cupsArrayDelete(DNSSDPrinters);
1342 DNSSDPrinters = NULL;
1343
1344 DNSSDPort = 0;
1345 }
1346
1347
1348 # ifdef HAVE_DNSSD
1349 /*
1350 * 'dnssdUpdate()' - Handle DNS-SD queries.
1351 */
1352
1353 static void
1354 dnssdUpdate(void)
1355 {
1356 DNSServiceErrorType sdErr; /* Service discovery error */
1357
1358
1359 if ((sdErr = DNSServiceProcessResult(DNSSDMaster)) != kDNSServiceErr_NoError)
1360 {
1361 cupsdLogMessage(CUPSD_LOG_ERROR,
1362 "DNS Service Discovery registration error %d!",
1363 sdErr);
1364 dnssdStop();
1365 }
1366 }
1367 # endif /* HAVE_DNSSD */
1368
1369
1370 /*
1371 * 'dnssdUpdateDNSSDName()' - Update the listen port, computer name, and web interface registration.
1372 */
1373
1374 static void
1375 dnssdUpdateDNSSDName(int from_callback) /* I - Called from callback? */
1376 {
1377 char webif[1024]; /* Web interface share name */
1378 # ifdef __APPLE__
1379 SCDynamicStoreRef sc; /* Context for dynamic store */
1380 CFDictionaryRef btmm; /* Back-to-My-Mac domains */
1381 CFStringEncoding nameEncoding; /* Encoding of computer name */
1382 CFStringRef nameRef; /* Host name CFString */
1383 char nameBuffer[1024]; /* C-string buffer */
1384 # endif /* __APPLE__ */
1385
1386
1387 /*
1388 * Only share the web interface and printers when non-local listening is
1389 * enabled...
1390 */
1391
1392 if (!DNSSDPort)
1393 {
1394 /*
1395 * Get the port we use for registrations. If we are not listening on any
1396 * non-local ports, there is no sense sharing local printers via Bonjour...
1397 */
1398
1399 cupsd_listener_t *lis; /* Current listening socket */
1400
1401 for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
1402 lis;
1403 lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
1404 {
1405 if (httpAddrLocalhost(&(lis->address)))
1406 continue;
1407
1408 DNSSDPort = httpAddrPort(&(lis->address));
1409 break;
1410 }
1411 }
1412
1413 if (!DNSSDPort)
1414 return;
1415
1416 /*
1417 * Get the computer name as a c-string...
1418 */
1419
1420 # ifdef __APPLE__
1421 sc = SCDynamicStoreCreate(kCFAllocatorDefault, CFSTR("cupsd"), NULL, NULL);
1422
1423 if (sc)
1424 {
1425 /*
1426 * Get the computer name from the dynamic store...
1427 */
1428
1429 cupsdClearString(&DNSSDComputerName);
1430
1431 if ((nameRef = SCDynamicStoreCopyComputerName(sc, &nameEncoding)) != NULL)
1432 {
1433 if (CFStringGetCString(nameRef, nameBuffer, sizeof(nameBuffer),
1434 kCFStringEncodingUTF8))
1435 {
1436 cupsdLogMessage(CUPSD_LOG_DEBUG,
1437 "Dynamic store computer name is \"%s\".", nameBuffer);
1438 cupsdSetString(&DNSSDComputerName, nameBuffer);
1439 }
1440
1441 CFRelease(nameRef);
1442 }
1443
1444 if (!DNSSDComputerName)
1445 {
1446 /*
1447 * Use the ServerName instead...
1448 */
1449
1450 cupsdLogMessage(CUPSD_LOG_DEBUG,
1451 "Using ServerName \"%s\" as computer name.", ServerName);
1452 cupsdSetString(&DNSSDComputerName, ServerName);
1453 }
1454
1455 if (!DNSSDHostName)
1456 {
1457 /*
1458 * Get the local hostname from the dynamic store...
1459 */
1460
1461 if ((nameRef = SCDynamicStoreCopyLocalHostName(sc)) != NULL)
1462 {
1463 if (CFStringGetCString(nameRef, nameBuffer, sizeof(nameBuffer),
1464 kCFStringEncodingUTF8))
1465 {
1466 cupsdLogMessage(CUPSD_LOG_DEBUG,
1467 "Dynamic store host name is \"%s\".", nameBuffer);
1468 cupsdSetString(&DNSSDHostName, nameBuffer);
1469 }
1470
1471 CFRelease(nameRef);
1472 }
1473 }
1474
1475 if (!DNSSDHostName)
1476 {
1477 /*
1478 * Use the ServerName instead...
1479 */
1480
1481 cupsdLogMessage(CUPSD_LOG_DEBUG,
1482 "Using ServerName \"%s\" as host name.", ServerName);
1483 cupsdSetString(&DNSSDHostName, ServerName);
1484 }
1485
1486 /*
1487 * Get any Back-to-My-Mac domains and add them as aliases...
1488 */
1489
1490 cupsdFreeAliases(DNSSDAlias);
1491 DNSSDAlias = NULL;
1492
1493 btmm = SCDynamicStoreCopyValue(sc, CFSTR("Setup:/Network/BackToMyMac"));
1494 if (btmm && CFGetTypeID(btmm) == CFDictionaryGetTypeID())
1495 {
1496 cupsdLogMessage(CUPSD_LOG_DEBUG, "%d Back to My Mac aliases to add.",
1497 (int)CFDictionaryGetCount(btmm));
1498 CFDictionaryApplyFunction(btmm, dnssdAddAlias, NULL);
1499 }
1500 else if (btmm)
1501 cupsdLogMessage(CUPSD_LOG_ERROR,
1502 "Bad Back to My Mac data in dynamic store!");
1503 else
1504 cupsdLogMessage(CUPSD_LOG_DEBUG, "No Back to My Mac aliases to add.");
1505
1506 if (btmm)
1507 CFRelease(btmm);
1508
1509 CFRelease(sc);
1510 }
1511 else
1512 # endif /* __APPLE__ */
1513 # ifdef HAVE_AVAHI
1514 if (DNSSDClient)
1515 {
1516 const char *host_name = avahi_client_get_host_name(DNSSDClient);
1517
1518 cupsdSetString(&DNSSDComputerName, host_name ? host_name : ServerName);
1519
1520 if (!DNSSDHostName)
1521 {
1522 const char *host_fqdn = avahi_client_get_host_name_fqdn(DNSSDClient);
1523
1524 if (host_fqdn)
1525 cupsdSetString(&DNSSDHostName, host_fqdn);
1526 else if (strchr(ServerName, '.'))
1527 cupsdSetString(&DNSSDHostName, ServerName);
1528 else
1529 cupsdSetStringf(&DNSSDHostName, "%s.local", ServerName);
1530 }
1531 }
1532 else
1533 # endif /* HAVE_AVAHI */
1534 {
1535 cupsdSetString(&DNSSDComputerName, ServerName);
1536
1537 if (!DNSSDHostName)
1538 {
1539 if (strchr(ServerName, '.'))
1540 cupsdSetString(&DNSSDHostName, ServerName);
1541 else
1542 cupsdSetStringf(&DNSSDHostName, "%s.local", ServerName);
1543 }
1544 }
1545
1546 /*
1547 * Then (re)register the web interface if enabled...
1548 */
1549
1550 if (BrowseWebIF)
1551 {
1552 if (DNSSDComputerName)
1553 snprintf(webif, sizeof(webif), "CUPS @ %s", DNSSDComputerName);
1554 else
1555 strlcpy(webif, "CUPS", sizeof(webif));
1556
1557 dnssdDeregisterInstance(&WebIFSrv, from_callback);
1558 dnssdRegisterInstance(&WebIFSrv, NULL, webif, "_http._tcp", "_printer", DNSSDPort, NULL, 1, from_callback);
1559 }
1560 }
1561
1562
1563 /*
1564 * 'get_auth_info_required()' - Get the auth-info-required value to advertise.
1565 */
1566
1567 static char * /* O - String or NULL if none */
1568 get_auth_info_required(
1569 cupsd_printer_t *p, /* I - Printer */
1570 char *buffer, /* I - Value buffer */
1571 size_t bufsize) /* I - Size of value buffer */
1572 {
1573 cupsd_location_t *auth; /* Pointer to authentication element */
1574 char resource[1024]; /* Printer/class resource path */
1575
1576
1577 /*
1578 * If auth-info-required is set for this printer, return that...
1579 */
1580
1581 if (p->num_auth_info_required > 0 && strcmp(p->auth_info_required[0], "none"))
1582 {
1583 int i; /* Looping var */
1584 char *bufptr; /* Pointer into buffer */
1585
1586 for (i = 0, bufptr = buffer; i < p->num_auth_info_required; i ++)
1587 {
1588 if (bufptr >= (buffer + bufsize - 2))
1589 break;
1590
1591 if (i)
1592 *bufptr++ = ',';
1593
1594 strlcpy(bufptr, p->auth_info_required[i], bufsize - (size_t)(bufptr - buffer));
1595 bufptr += strlen(bufptr);
1596 }
1597
1598 return (buffer);
1599 }
1600
1601 /*
1602 * Figure out the authentication data requirements to advertise...
1603 */
1604
1605 if (p->type & CUPS_PRINTER_CLASS)
1606 snprintf(resource, sizeof(resource), "/classes/%s", p->name);
1607 else
1608 snprintf(resource, sizeof(resource), "/printers/%s", p->name);
1609
1610 if ((auth = cupsdFindBest(resource, HTTP_POST)) == NULL ||
1611 auth->type == CUPSD_AUTH_NONE)
1612 auth = cupsdFindPolicyOp(p->op_policy_ptr, IPP_PRINT_JOB);
1613
1614 if (auth)
1615 {
1616 int auth_type; /* Authentication type */
1617
1618 if ((auth_type = auth->type) == CUPSD_AUTH_DEFAULT)
1619 auth_type = cupsdDefaultAuthType();
1620
1621 switch (auth_type)
1622 {
1623 case CUPSD_AUTH_NONE :
1624 return (NULL);
1625
1626 case CUPSD_AUTH_NEGOTIATE :
1627 strlcpy(buffer, "negotiate", bufsize);
1628 break;
1629
1630 default :
1631 strlcpy(buffer, "username,password", bufsize);
1632 break;
1633 }
1634
1635 return (buffer);
1636 }
1637
1638 return ("none");
1639 }
1640 #endif /* HAVE_DNSSD || HAVE_AVAHI */
1641
1642
1643 #ifdef __APPLE__
1644 /*
1645 * 'get_hostconfig()' - Get an /etc/hostconfig service setting.
1646 */
1647
1648 static int /* O - 1 for YES or AUTOMATIC, 0 for NO */
1649 get_hostconfig(const char *name) /* I - Name of service */
1650 {
1651 cups_file_t *fp; /* Hostconfig file */
1652 char line[1024], /* Line from file */
1653 *ptr; /* Pointer to value */
1654 int state = 1; /* State of service */
1655
1656
1657 /*
1658 * Try opening the /etc/hostconfig file; if we can't open it, assume that
1659 * the service is enabled/auto.
1660 */
1661
1662 if ((fp = cupsFileOpen("/etc/hostconfig", "r")) != NULL)
1663 {
1664 /*
1665 * Read lines from the file until we find the service...
1666 */
1667
1668 while (cupsFileGets(fp, line, sizeof(line)))
1669 {
1670 if (line[0] == '#' || (ptr = strchr(line, '=')) == NULL)
1671 continue;
1672
1673 *ptr++ = '\0';
1674
1675 if (!_cups_strcasecmp(line, name))
1676 {
1677 /*
1678 * Found the service, see if it is set to "-NO-"...
1679 */
1680
1681 if (!_cups_strncasecmp(ptr, "-NO-", 4))
1682 state = 0;
1683 break;
1684 }
1685 }
1686
1687 cupsFileClose(fp);
1688 }
1689
1690 return (state);
1691 }
1692 #endif /* __APPLE__ */
1693
1694
1695 /*
1696 * 'update_lpd()' - Update the LPD configuration as needed.
1697 */
1698
1699 static void
1700 update_lpd(int onoff) /* - 1 = turn on, 0 = turn off */
1701 {
1702 if (!LPDConfigFile)
1703 return;
1704
1705 #ifdef __APPLE__
1706 /*
1707 * Allow /etc/hostconfig CUPS_LPD service setting to override cupsd.conf
1708 * setting for backwards-compatibility.
1709 */
1710
1711 if (onoff && !get_hostconfig("CUPS_LPD"))
1712 onoff = 0;
1713 #endif /* __APPLE__ */
1714
1715 if (!strncmp(LPDConfigFile, "xinetd:///", 10))
1716 {
1717 /*
1718 * Enable/disable LPD via the xinetd.d config file for cups-lpd...
1719 */
1720
1721 char newfile[1024]; /* New cups-lpd.N file */
1722 cups_file_t *ofp, /* Original file pointer */
1723 *nfp; /* New file pointer */
1724 char line[1024]; /* Line from file */
1725
1726
1727 snprintf(newfile, sizeof(newfile), "%s.N", LPDConfigFile + 9);
1728
1729 if ((ofp = cupsFileOpen(LPDConfigFile + 9, "r")) == NULL)
1730 {
1731 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open \"%s\" - %s",
1732 LPDConfigFile + 9, strerror(errno));
1733 return;
1734 }
1735
1736 if ((nfp = cupsFileOpen(newfile, "w")) == NULL)
1737 {
1738 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create \"%s\" - %s",
1739 newfile, strerror(errno));
1740 cupsFileClose(ofp);
1741 return;
1742 }
1743
1744 /*
1745 * Copy all of the lines from the cups-lpd file...
1746 */
1747
1748 while (cupsFileGets(ofp, line, sizeof(line)))
1749 {
1750 if (line[0] == '{')
1751 {
1752 cupsFilePrintf(nfp, "%s\n", line);
1753 snprintf(line, sizeof(line), "\tdisable = %s",
1754 onoff ? "no" : "yes");
1755 }
1756 else if (!strstr(line, "disable ="))
1757 cupsFilePrintf(nfp, "%s\n", line);
1758 }
1759
1760 cupsFileClose(nfp);
1761 cupsFileClose(ofp);
1762 rename(newfile, LPDConfigFile + 9);
1763 }
1764 #ifdef __APPLE__
1765 else if (!strncmp(LPDConfigFile, "launchd:///", 11))
1766 {
1767 /*
1768 * Enable/disable LPD via the launchctl command...
1769 */
1770
1771 char *argv[5], /* Arguments for command */
1772 *envp[MAX_ENV]; /* Environment for command */
1773 int pid; /* Process ID */
1774
1775
1776 cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
1777 argv[0] = (char *)"launchctl";
1778 argv[1] = (char *)(onoff ? "load" : "unload");
1779 argv[2] = (char *)"-w";
1780 argv[3] = LPDConfigFile + 10;
1781 argv[4] = NULL;
1782
1783 cupsdStartProcess("/bin/launchctl", argv, envp, -1, -1, -1, -1, -1, 1,
1784 NULL, NULL, &pid);
1785 }
1786 #endif /* __APPLE__ */
1787 else
1788 cupsdLogMessage(CUPSD_LOG_INFO, "Unknown LPDConfigFile scheme!");
1789 }
1790
1791
1792 /*
1793 * 'update_smb()' - Update the SMB configuration as needed.
1794 */
1795
1796 static void
1797 update_smb(int onoff) /* I - 1 = turn on, 0 = turn off */
1798 {
1799 if (!SMBConfigFile)
1800 return;
1801
1802 if (!strncmp(SMBConfigFile, "samba:///", 9))
1803 {
1804 /*
1805 * Enable/disable SMB via the specified smb.conf config file...
1806 */
1807
1808 char newfile[1024]; /* New smb.conf.N file */
1809 cups_file_t *ofp, /* Original file pointer */
1810 *nfp; /* New file pointer */
1811 char line[1024]; /* Line from file */
1812 int in_printers; /* In [printers] section? */
1813
1814
1815 snprintf(newfile, sizeof(newfile), "%s.N", SMBConfigFile + 8);
1816
1817 if ((ofp = cupsFileOpen(SMBConfigFile + 8, "r")) == NULL)
1818 {
1819 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open \"%s\" - %s",
1820 SMBConfigFile + 8, strerror(errno));
1821 return;
1822 }
1823
1824 if ((nfp = cupsFileOpen(newfile, "w")) == NULL)
1825 {
1826 cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create \"%s\" - %s",
1827 newfile, strerror(errno));
1828 cupsFileClose(ofp);
1829 return;
1830 }
1831
1832 /*
1833 * Copy all of the lines from the smb.conf file...
1834 */
1835
1836 in_printers = 0;
1837
1838 while (cupsFileGets(ofp, line, sizeof(line)))
1839 {
1840 if (in_printers && strstr(line, "printable ="))
1841 snprintf(line, sizeof(line), " printable = %s",
1842 onoff ? "yes" : "no");
1843
1844 cupsFilePrintf(nfp, "%s\n", line);
1845
1846 if (line[0] == '[')
1847 in_printers = !strcmp(line, "[printers]");
1848 }
1849
1850 cupsFileClose(nfp);
1851 cupsFileClose(ofp);
1852 rename(newfile, SMBConfigFile + 8);
1853 }
1854 else
1855 cupsdLogMessage(CUPSD_LOG_INFO, "Unknown SMBConfigFile scheme!");
1856 }
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