4 This file is part of avahi.
6 avahi is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 avahi is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
14 Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with avahi; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
33 #include <netinet/in.h>
35 #include <avahi-common/simple-watch.h>
36 #include <avahi-common/malloc.h>
37 #include <avahi-common/error.h>
38 #include <avahi-common/domain.h>
39 #include <avahi-common/alternative.h>
40 #include <avahi-client/client.h>
51 struct _DNSServiceRef_t {
54 AvahiSimplePoll *simple_poll;
56 int thread_fd, main_fd;
61 pthread_mutex_t mutex;
64 DNSServiceBrowseReply service_browser_callback;
65 DNSServiceResolveReply service_resolver_callback;
66 DNSServiceDomainEnumReply domain_browser_callback;
67 DNSServiceRegisterReply service_register_callback;
70 AvahiServiceBrowser *service_browser;
71 AvahiServiceResolver *service_resolver;
72 AvahiDomainBrowser *domain_browser;
74 char *service_name, *service_name_chosen, *service_regtype, *service_domain, *service_host;
75 uint16_t service_port;
76 AvahiIfIndex service_interface;
77 AvahiStringList *service_txt;
79 AvahiEntryGroup *entry_group;
82 #define ASSERT_SUCCESS(r) { int __ret = (r); assert(__ret == 0); }
84 static DNSServiceErrorType map_error(int error) {
87 return kDNSServiceErr_NoError;
89 case AVAHI_ERR_BAD_STATE :
90 return kDNSServiceErr_BadState;
92 case AVAHI_ERR_INVALID_HOST_NAME:
93 case AVAHI_ERR_INVALID_DOMAIN_NAME:
94 case AVAHI_ERR_INVALID_TTL:
95 case AVAHI_ERR_IS_PATTERN:
96 case AVAHI_ERR_INVALID_RECORD:
97 case AVAHI_ERR_INVALID_SERVICE_NAME:
98 case AVAHI_ERR_INVALID_SERVICE_TYPE:
99 case AVAHI_ERR_INVALID_PORT:
100 case AVAHI_ERR_INVALID_KEY:
101 case AVAHI_ERR_INVALID_ADDRESS:
102 case AVAHI_ERR_INVALID_SERVICE_SUBTYPE:
103 return kDNSServiceErr_BadParam;
106 case AVAHI_ERR_LOCAL_COLLISION:
107 return kDNSServiceErr_NameConflict;
109 case AVAHI_ERR_TOO_MANY_CLIENTS:
110 case AVAHI_ERR_TOO_MANY_OBJECTS:
111 case AVAHI_ERR_TOO_MANY_ENTRIES:
112 case AVAHI_ERR_ACCESS_DENIED:
113 return kDNSServiceErr_Refused;
115 case AVAHI_ERR_INVALID_OPERATION:
116 case AVAHI_ERR_INVALID_OBJECT:
117 return kDNSServiceErr_Invalid;
119 case AVAHI_ERR_NO_MEMORY:
120 return kDNSServiceErr_NoMemory;
122 case AVAHI_ERR_INVALID_INTERFACE:
123 case AVAHI_ERR_INVALID_PROTOCOL:
124 return kDNSServiceErr_BadInterfaceIndex;
126 case AVAHI_ERR_INVALID_FLAGS:
127 return kDNSServiceErr_BadFlags;
129 case AVAHI_ERR_NOT_FOUND:
130 return kDNSServiceErr_NoSuchName;
132 case AVAHI_ERR_VERSION_MISMATCH:
133 return kDNSServiceErr_Incompatible;
135 case AVAHI_ERR_NO_NETWORK:
137 case AVAHI_ERR_INVALID_CONFIG:
138 case AVAHI_ERR_TIMEOUT:
139 case AVAHI_ERR_DBUS_ERROR:
140 case AVAHI_ERR_NOT_CONNECTED:
141 case AVAHI_ERR_NO_DAEMON:
146 return kDNSServiceErr_Unknown;
149 static const char *add_trailing_dot(const char *s, char *buf, size_t buf_len) {
156 if (s[strlen(s)-1] == '.')
159 snprintf(buf, buf_len, "%s.", s);
163 static int read_command(int fd) {
169 if ((r = read(fd, &command, 1)) != 1) {
170 fprintf(stderr, __FILE__": read() failed: %s\n", r < 0 ? strerror(errno) : "EOF");
177 static int write_command(int fd, char reply) {
180 if (write(fd, &reply, 1) != 1) {
181 fprintf(stderr, __FILE__": write() failed: %s\n", strerror(errno));
188 static int poll_func(struct pollfd *ufds, unsigned int nfds, int timeout, void *userdata) {
189 DNSServiceRef sdref = userdata;
194 ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
196 /* fprintf(stderr, "pre-syscall\n"); */
197 ret = poll(ufds, nfds, timeout);
198 /* fprintf(stderr, "post-syscall\n"); */
200 ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
205 static void * thread_func(void *data) {
206 DNSServiceRef sdref = data;
210 pthread_sigmask(SIG_BLOCK, &mask, NULL);
212 sdref->thread = pthread_self();
213 sdref->thread_running = 1;
218 if ((command = read_command(sdref->thread_fd)) < 0)
221 /* fprintf(stderr, "Command: %c\n", command); */
227 ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
230 if (avahi_simple_poll_run(sdref->simple_poll) < 0) {
231 fprintf(stderr, __FILE__": avahi_simple_poll_run() failed.\n");
232 ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
236 if (write_command(sdref->thread_fd, COMMAND_POLLED) < 0) {
237 ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
241 ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
254 static DNSServiceRef sdref_new(void) {
255 int fd[2] = { -1, -1 };
256 DNSServiceRef sdref = NULL;
257 pthread_mutexattr_t mutex_attr;
259 if (socketpair(AF_UNIX, SOCK_STREAM, 0, fd) < 0)
262 if (!(sdref = avahi_new(struct _DNSServiceRef_t, 1)))
266 sdref->thread_fd = fd[0];
267 sdref->main_fd = fd[1];
269 sdref->client = NULL;
270 sdref->service_browser = NULL;
271 sdref->service_resolver = NULL;
272 sdref->domain_browser = NULL;
273 sdref->entry_group = NULL;
275 sdref->service_name = sdref->service_name_chosen = sdref->service_regtype = sdref->service_domain = sdref->service_host = NULL;
276 sdref->service_txt = NULL;
278 ASSERT_SUCCESS(pthread_mutexattr_init(&mutex_attr));
279 pthread_mutexattr_settype(&mutex_attr, PTHREAD_MUTEX_RECURSIVE);
280 ASSERT_SUCCESS(pthread_mutex_init(&sdref->mutex, NULL));
282 sdref->thread_running = 0;
284 if (!(sdref->simple_poll = avahi_simple_poll_new()))
287 avahi_simple_poll_set_func(sdref->simple_poll, poll_func, sdref);
289 /* Start simple poll */
290 if (avahi_simple_poll_prepare(sdref->simple_poll, -1) < 0)
293 /* Queue a initiall POLL command for the thread */
294 if (write_command(sdref->main_fd, COMMAND_POLL) < 0)
297 if (pthread_create(&sdref->thread, NULL, thread_func, sdref) != 0)
300 sdref->thread_running = 1;
307 DNSServiceRefDeallocate(sdref);
312 static void sdref_free(DNSServiceRef sdref) {
315 if (sdref->thread_running) {
316 write_command(sdref->main_fd, COMMAND_QUIT);
317 avahi_simple_poll_wakeup(sdref->simple_poll);
318 pthread_join(sdref->thread, NULL);
322 avahi_client_free(sdref->client);
324 if (sdref->thread_fd >= 0)
325 close(sdref->thread_fd);
327 if (sdref->main_fd >= 0)
328 close(sdref->main_fd);
330 if (sdref->simple_poll)
331 avahi_simple_poll_free(sdref->simple_poll);
333 pthread_mutex_destroy(&sdref->mutex);
335 avahi_free(sdref->service_name);
336 avahi_free(sdref->service_name_chosen);
337 avahi_free(sdref->service_regtype);
338 avahi_free(sdref->service_domain);
339 avahi_free(sdref->service_host);
341 avahi_string_list_free(sdref->service_txt);
346 static void sdref_ref(DNSServiceRef sdref) {
348 assert(sdref->n_ref >= 1);
353 static void sdref_unref(DNSServiceRef sdref) {
355 assert(sdref->n_ref >= 1);
357 if (--(sdref->n_ref) <= 0)
361 int DNSSD_API DNSServiceRefSockFD(DNSServiceRef sdref) {
363 assert(sdref->n_ref >= 1);
367 return sdref->main_fd;
370 DNSServiceErrorType DNSSD_API DNSServiceProcessResult(DNSServiceRef sdref) {
371 DNSServiceErrorType ret = kDNSServiceErr_Unknown;
374 assert(sdref->n_ref >= 1);
380 ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
382 /* Cleanup notification socket */
383 if (read_command(sdref->main_fd) != COMMAND_POLLED)
386 if (avahi_simple_poll_dispatch(sdref->simple_poll) < 0)
389 if (sdref->n_ref > 1) /* Perhaps we should die */
391 /* Dispatch events */
392 if (avahi_simple_poll_prepare(sdref->simple_poll, -1) < 0)
395 if (sdref->n_ref > 1)
397 /* Request the poll */
398 if (write_command(sdref->main_fd, COMMAND_POLL) < 0)
401 ret = kDNSServiceErr_NoError;
405 ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
412 void DNSSD_API DNSServiceRefDeallocate(DNSServiceRef sdref) {
414 assert(sdref->n_ref >= 1);
421 static void service_browser_callback(
422 AvahiServiceBrowser *b,
423 AvahiIfIndex interface,
424 AvahiProtocol protocol,
425 AvahiBrowserEvent event,
429 AvahiLookupResultFlags flags,
432 DNSServiceRef sdref = userdata;
433 char type_fixed[AVAHI_DOMAIN_NAME_MAX], domain_fixed[AVAHI_DOMAIN_NAME_MAX];
436 assert(sdref->n_ref >= 1);
438 type = add_trailing_dot(type, type_fixed, sizeof(type_fixed));
439 domain = add_trailing_dot(domain, domain_fixed, sizeof(domain_fixed));
442 case AVAHI_BROWSER_NEW:
443 sdref->service_browser_callback(sdref, kDNSServiceFlagsAdd, interface, kDNSServiceErr_NoError, name, type, domain, sdref->context);
446 case AVAHI_BROWSER_REMOVE:
447 sdref->service_browser_callback(sdref, 0, interface, kDNSServiceErr_NoError, name, type, domain, sdref->context);
450 case AVAHI_BROWSER_FAILURE:
451 sdref->service_browser_callback(sdref, 0, interface, map_error(avahi_client_errno(sdref->client)), NULL, NULL, NULL, sdref->context);
454 case AVAHI_BROWSER_CACHE_EXHAUSTED:
455 case AVAHI_BROWSER_ALL_FOR_NOW:
460 static void generic_client_callback(AvahiClient *s, AvahiClientState state, void* userdata) {
461 DNSServiceRef sdref = userdata;
465 assert(sdref->n_ref >= 1);
468 case AVAHI_CLIENT_DISCONNECTED: {
470 if (sdref->service_browser_callback)
471 sdref->service_browser_callback(sdref, 0, 0, kDNSServiceErr_Unknown, NULL, NULL, NULL, sdref->context);
472 else if (sdref->service_resolver_callback)
473 sdref->service_resolver_callback(sdref, 0, 0, kDNSServiceErr_Unknown, NULL, NULL, 0, 0, NULL, sdref->context);
474 else if (sdref->domain_browser_callback)
475 sdref->domain_browser_callback(sdref, 0, 0, kDNSServiceErr_Unknown, NULL, sdref->context);
480 case AVAHI_CLIENT_S_RUNNING:
481 case AVAHI_CLIENT_S_COLLISION:
482 case AVAHI_CLIENT_S_INVALID:
483 case AVAHI_CLIENT_S_REGISTERING:
488 DNSServiceErrorType DNSSD_API DNSServiceBrowse(
489 DNSServiceRef *ret_sdref,
490 DNSServiceFlags flags,
494 DNSServiceBrowseReply callback,
497 DNSServiceErrorType ret = kDNSServiceErr_Unknown;
499 DNSServiceRef sdref = NULL;
500 AvahiIfIndex ifindex;
509 if (interface == kDNSServiceInterfaceIndexLocalOnly || flags != 0) {
510 AVAHI_WARN_UNSUPPORTED;
511 return kDNSServiceErr_Unsupported;
514 if (!(sdref = sdref_new()))
515 return kDNSServiceErr_Unknown;
517 sdref->context = context;
518 sdref->service_browser_callback = callback;
520 ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
522 if (!(sdref->client = avahi_client_new(avahi_simple_poll_get(sdref->simple_poll), generic_client_callback, sdref, &error))) {
523 ret = map_error(error);
527 ifindex = interface == kDNSServiceInterfaceIndexAny ? AVAHI_IF_UNSPEC : (AvahiIfIndex) interface;
529 if (!(sdref->service_browser = avahi_service_browser_new(sdref->client, ifindex, AVAHI_PROTO_UNSPEC, regtype, domain, 0, service_browser_callback, sdref))) {
530 ret = map_error(avahi_client_errno(sdref->client));
534 ret = kDNSServiceErr_NoError;
539 ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
541 if (ret != kDNSServiceErr_NoError)
542 DNSServiceRefDeallocate(sdref);
547 static void service_resolver_callback(
548 AvahiServiceResolver *r,
549 AvahiIfIndex interface,
550 AvahiProtocol protocol,
551 AvahiResolverEvent event,
555 const char *host_name,
556 const AvahiAddress *a,
558 AvahiStringList *txt,
559 AvahiLookupResultFlags flags,
562 DNSServiceRef sdref = userdata;
563 char host_name_fixed[AVAHI_DOMAIN_NAME_MAX];
567 assert(sdref->n_ref >= 1);
569 host_name = add_trailing_dot(host_name, host_name_fixed, sizeof(host_name_fixed));
572 case AVAHI_RESOLVER_FOUND: {
574 char full_name[AVAHI_DOMAIN_NAME_MAX];
579 if ((p = avahi_new0(char, (l = avahi_string_list_serialize(txt, NULL, 0))+1)))
580 avahi_string_list_serialize(txt, p, l);
582 ret = avahi_service_name_join(full_name, sizeof(full_name), name, type, domain);
583 assert(ret == AVAHI_OK);
585 strcat(full_name, ".");
587 sdref->service_resolver_callback(sdref, 0, interface, kDNSServiceErr_NoError, full_name, host_name, htons(port), l, p, sdref->context);
593 case AVAHI_RESOLVER_FAILURE:
594 sdref->service_resolver_callback(sdref, 0, interface, map_error(avahi_client_errno(sdref->client)), NULL, NULL, 0, 0, NULL, sdref->context);
599 DNSServiceErrorType DNSSD_API DNSServiceResolve(
600 DNSServiceRef *ret_sdref,
601 DNSServiceFlags flags,
606 DNSServiceResolveReply callback,
609 DNSServiceErrorType ret = kDNSServiceErr_Unknown;
611 DNSServiceRef sdref = NULL;
612 AvahiIfIndex ifindex;
622 if (interface == kDNSServiceInterfaceIndexLocalOnly || flags != 0) {
623 AVAHI_WARN_UNSUPPORTED;
624 return kDNSServiceErr_Unsupported;
627 if (!(sdref = sdref_new()))
628 return kDNSServiceErr_Unknown;
630 sdref->context = context;
631 sdref->service_resolver_callback = callback;
633 ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
635 if (!(sdref->client = avahi_client_new(avahi_simple_poll_get(sdref->simple_poll), generic_client_callback, sdref, &error))) {
636 ret = map_error(error);
640 ifindex = interface == kDNSServiceInterfaceIndexAny ? AVAHI_IF_UNSPEC : (AvahiIfIndex) interface;
642 if (!(sdref->service_resolver = avahi_service_resolver_new(sdref->client, ifindex, AVAHI_PROTO_UNSPEC, name, regtype, domain, AVAHI_PROTO_UNSPEC, 0, service_resolver_callback, sdref))) {
643 ret = map_error(avahi_client_errno(sdref->client));
648 ret = kDNSServiceErr_NoError;
653 ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
655 if (ret != kDNSServiceErr_NoError)
656 DNSServiceRefDeallocate(sdref);
661 int DNSSD_API DNSServiceConstructFullName (
665 const char *domain) {
673 if (avahi_service_name_join(fullName, kDNSServiceMaxDomainName, service, regtype, domain) < 0)
679 static void domain_browser_callback(
680 AvahiDomainBrowser *b,
681 AvahiIfIndex interface,
682 AvahiProtocol protocol,
683 AvahiBrowserEvent event,
685 AvahiLookupResultFlags flags,
688 DNSServiceRef sdref = userdata;
689 static char domain_fixed[AVAHI_DOMAIN_NAME_MAX];
693 assert(sdref->n_ref >= 1);
695 domain = add_trailing_dot(domain, domain_fixed, sizeof(domain_fixed));
698 case AVAHI_BROWSER_NEW:
699 sdref->domain_browser_callback(sdref, kDNSServiceFlagsAdd, interface, kDNSServiceErr_NoError, domain, sdref->context);
702 case AVAHI_BROWSER_REMOVE:
703 sdref->domain_browser_callback(sdref, 0, interface, kDNSServiceErr_NoError, domain, sdref->context);
706 case AVAHI_BROWSER_FAILURE:
707 sdref->domain_browser_callback(sdref, 0, interface, map_error(avahi_client_errno(sdref->client)), domain, sdref->context);
710 case AVAHI_BROWSER_CACHE_EXHAUSTED:
711 case AVAHI_BROWSER_ALL_FOR_NOW:
716 DNSServiceErrorType DNSSD_API DNSServiceEnumerateDomains(
717 DNSServiceRef *ret_sdref,
718 DNSServiceFlags flags,
720 DNSServiceDomainEnumReply callback,
723 DNSServiceErrorType ret = kDNSServiceErr_Unknown;
725 DNSServiceRef sdref = NULL;
726 AvahiIfIndex ifindex;
733 if (interface == kDNSServiceInterfaceIndexLocalOnly ||
734 (flags != kDNSServiceFlagsBrowseDomains && flags != kDNSServiceFlagsRegistrationDomains)) {
735 AVAHI_WARN_UNSUPPORTED;
736 return kDNSServiceErr_Unsupported;
739 if (!(sdref = sdref_new()))
740 return kDNSServiceErr_Unknown;
742 sdref->context = context;
743 sdref->domain_browser_callback = callback;
745 ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
747 if (!(sdref->client = avahi_client_new(avahi_simple_poll_get(sdref->simple_poll), generic_client_callback, sdref, &error))) {
748 ret = map_error(error);
752 ifindex = interface == kDNSServiceInterfaceIndexAny ? AVAHI_IF_UNSPEC : (AvahiIfIndex) interface;
754 if (!(sdref->domain_browser = avahi_domain_browser_new(sdref->client, ifindex, AVAHI_PROTO_UNSPEC, "local",
755 flags == kDNSServiceFlagsRegistrationDomains ? AVAHI_DOMAIN_BROWSER_REGISTER : AVAHI_DOMAIN_BROWSER_BROWSE,
756 0, domain_browser_callback, sdref))) {
757 ret = map_error(avahi_client_errno(sdref->client));
761 ret = kDNSServiceErr_NoError;
766 ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
768 if (ret != kDNSServiceErr_NoError)
769 DNSServiceRefDeallocate(sdref);
774 static void reg_report_error(DNSServiceRef sdref, DNSServiceErrorType error) {
775 char regtype_fixed[AVAHI_DOMAIN_NAME_MAX], domain_fixed[AVAHI_DOMAIN_NAME_MAX];
776 const char *regtype, *domain;
778 assert(sdref->n_ref >= 1);
780 assert(sdref->service_register_callback);
782 regtype = add_trailing_dot(sdref->service_regtype, regtype_fixed, sizeof(regtype_fixed));
783 domain = add_trailing_dot(sdref->service_domain, domain_fixed, sizeof(domain_fixed));
785 sdref->service_register_callback(
787 sdref->service_name_chosen ? sdref->service_name_chosen : sdref->service_name,
793 static int reg_create_service(DNSServiceRef sdref) {
795 const char *real_type;
798 assert(sdref->n_ref >= 1);
800 real_type = avahi_get_type_from_subtype(sdref->service_regtype);
802 if ((ret = avahi_entry_group_add_service_strlst(
804 sdref->service_interface,
807 sdref->service_name_chosen,
808 real_type ? real_type : sdref->service_regtype,
809 sdref->service_domain,
812 sdref->service_txt)) < 0)
817 /* Create a subtype entry */
819 if (avahi_entry_group_add_service_subtype(
821 sdref->service_interface,
824 sdref->service_name_chosen,
826 sdref->service_domain,
827 sdref->service_regtype) < 0)
832 if ((ret = avahi_entry_group_commit(sdref->entry_group)) < 0)
838 static void reg_client_callback(AvahiClient *s, AvahiClientState state, void* userdata) {
839 DNSServiceRef sdref = userdata;
843 assert(sdref->n_ref >= 1);
845 /* We've not been setup completely */
846 if (!sdref->entry_group)
850 case AVAHI_CLIENT_DISCONNECTED: {
852 reg_report_error(sdref, kDNSServiceErr_NoError);
856 case AVAHI_CLIENT_S_RUNNING: {
859 if (!sdref->service_name) {
861 /* If the service name is taken from the host name, copy that */
863 avahi_free(sdref->service_name_chosen);
865 if (!(n = avahi_client_get_host_name(sdref->client))) {
866 reg_report_error(sdref, map_error(avahi_client_errno(sdref->client)));
870 if (!(sdref->service_name_chosen = avahi_strdup(n))) {
871 reg_report_error(sdref, kDNSServiceErr_NoMemory);
876 /* Register the service */
878 if ((ret = reg_create_service(sdref)) < 0) {
879 reg_report_error(sdref, map_error(ret));
886 case AVAHI_CLIENT_S_COLLISION:
888 /* Remove our entry */
889 avahi_entry_group_reset(sdref->entry_group);
893 case AVAHI_CLIENT_S_INVALID:
894 case AVAHI_CLIENT_S_REGISTERING:
901 static void reg_entry_group_callback(AvahiEntryGroup *g, AvahiEntryGroupState state, void *userdata) {
902 DNSServiceRef sdref = userdata;
907 case AVAHI_ENTRY_GROUP_ESTABLISHED:
908 /* Inform the user */
909 reg_report_error(sdref, kDNSServiceErr_NoError);
913 case AVAHI_ENTRY_GROUP_COLLISION: {
917 /* Remove our entry */
918 avahi_entry_group_reset(sdref->entry_group);
920 assert(sdref->service_name_chosen);
922 /* Pick a new name */
923 if (!(n = avahi_alternative_service_name(sdref->service_name_chosen))) {
924 reg_report_error(sdref, kDNSServiceErr_NoMemory);
927 avahi_free(sdref->service_name_chosen);
928 sdref->service_name_chosen = n;
930 /* Register the service with that new name */
931 if ((ret = reg_create_service(sdref)) < 0) {
932 reg_report_error(sdref, map_error(ret));
939 case AVAHI_ENTRY_GROUP_REGISTERING:
940 case AVAHI_ENTRY_GROUP_UNCOMMITED:
946 DNSServiceErrorType DNSSD_API DNSServiceRegister (
947 DNSServiceRef *ret_sdref,
948 DNSServiceFlags flags,
956 const void *txtRecord,
957 DNSServiceRegisterReply callback,
960 DNSServiceErrorType ret = kDNSServiceErr_Unknown;
962 DNSServiceRef sdref = NULL;
970 if (interface == kDNSServiceInterfaceIndexLocalOnly || flags) {
971 AVAHI_WARN_UNSUPPORTED;
972 return kDNSServiceErr_Unsupported;
975 if (!(sdref = sdref_new()))
976 return kDNSServiceErr_Unknown;
978 sdref->context = context;
979 sdref->service_register_callback = callback;
981 sdref->service_name = avahi_strdup(name);
982 sdref->service_regtype = regtype ? avahi_normalize_name_strdup(regtype) : NULL;
983 sdref->service_domain = domain ? avahi_normalize_name_strdup(domain) : NULL;
984 sdref->service_host = host ? avahi_normalize_name_strdup(host) : NULL;
985 sdref->service_interface = interface == kDNSServiceInterfaceIndexAny ? AVAHI_IF_UNSPEC : (AvahiIfIndex) interface;
986 sdref->service_port = ntohs(port);
987 sdref->service_txt = txtRecord ? avahi_string_list_parse(txtRecord, txtLen) : NULL;
989 ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
991 if (!(sdref->client = avahi_client_new(avahi_simple_poll_get(sdref->simple_poll), reg_client_callback, sdref, &error))) {
992 ret = map_error(error);
996 if (!sdref->service_domain) {
999 if (!(d = avahi_client_get_domain_name(sdref->client))) {
1000 ret = map_error(avahi_client_errno(sdref->client));
1004 if (!(sdref->service_domain = avahi_strdup(d))) {
1005 ret = kDNSServiceErr_NoMemory;
1010 if (!(sdref->entry_group = avahi_entry_group_new(sdref->client, reg_entry_group_callback, sdref))) {
1011 ret = map_error(avahi_client_errno(sdref->client));
1015 if (avahi_client_get_state(sdref->client) == AVAHI_CLIENT_S_RUNNING) {
1018 if (sdref->service_name)
1019 n = sdref->service_name;
1021 if (!(n = avahi_client_get_host_name(sdref->client))) {
1022 ret = map_error(avahi_client_errno(sdref->client));
1027 if (!(sdref->service_name_chosen = avahi_strdup(n))) {
1028 ret = kDNSServiceErr_NoMemory;
1033 if ((error = reg_create_service(sdref)) < 0) {
1034 ret = map_error(error);
1039 ret = kDNSServiceErr_NoError;
1044 ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
1046 if (ret != kDNSServiceErr_NoError)
1047 DNSServiceRefDeallocate(sdref);