-/* $Id$ */
-
/***
This file is part of avahi.
-
+
avahi is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
-
+
avahi is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
Public License for more details.
-
+
You should have received a copy of the GNU Lesser General Public
License along with avahi; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
COMMAND_POLL_FAILED = 'F'
};
+struct type_info {
+ char *type;
+ AvahiStringList *subtypes;
+ int n_subtypes;
+};
+
struct _DNSServiceRef_t {
int n_ref;
-
+
AvahiSimplePoll *simple_poll;
int thread_fd, main_fd;
int thread_running;
pthread_mutex_t mutex;
-
+
void *context;
DNSServiceBrowseReply service_browser_callback;
DNSServiceResolveReply service_resolver_callback;
DNSServiceDomainEnumReply domain_browser_callback;
DNSServiceRegisterReply service_register_callback;
+ DNSServiceQueryRecordReply query_resolver_callback;
AvahiClient *client;
AvahiServiceBrowser *service_browser;
AvahiServiceResolver *service_resolver;
AvahiDomainBrowser *domain_browser;
+ AvahiRecordBrowser *record_browser;
- char *service_name, *service_name_chosen, *service_regtype, *service_domain, *service_host;
+ struct type_info type_info;
+ char *service_name, *service_name_chosen, *service_domain, *service_host;
uint16_t service_port;
AvahiIfIndex service_interface;
AvahiStringList *service_txt;
switch (error) {
case AVAHI_OK :
return kDNSServiceErr_NoError;
-
+
case AVAHI_ERR_BAD_STATE :
return kDNSServiceErr_BadState;
-
+
case AVAHI_ERR_INVALID_HOST_NAME:
case AVAHI_ERR_INVALID_DOMAIN_NAME:
case AVAHI_ERR_INVALID_TTL:
case AVAHI_ERR_INVALID_INTERFACE:
case AVAHI_ERR_INVALID_PROTOCOL:
return kDNSServiceErr_BadInterfaceIndex;
-
+
case AVAHI_ERR_INVALID_FLAGS:
return kDNSServiceErr_BadFlags;
-
+
case AVAHI_ERR_NOT_FOUND:
return kDNSServiceErr_NoSuchName;
-
+
case AVAHI_ERR_VERSION_MISMATCH:
return kDNSServiceErr_Incompatible;
return kDNSServiceErr_Unknown;
}
+static void type_info_init(struct type_info *i) {
+ assert(i);
+ i->type = NULL;
+ i->subtypes = NULL;
+ i->n_subtypes = 0;
+}
+
+static void type_info_free(struct type_info *i) {
+ assert(i);
+
+ avahi_free(i->type);
+ avahi_string_list_free(i->subtypes);
+
+ type_info_init(i);
+}
+
+static int type_info_parse(struct type_info *i, const char *t) {
+ char *token = NULL;
+
+ assert(i);
+ assert(t);
+
+ type_info_init(i);
+
+ for (;;) {
+ size_t l;
+
+ if (*t == 0)
+ break;
+
+ l = strcspn(t, ",");
+
+ if (l <= 0)
+ goto fail;
+
+ token = avahi_strndup(t, l);
+
+ if (!token)
+ goto fail;
+
+ if (!i->type) {
+ /* This is the first token, hence the main type */
+
+ if (!avahi_is_valid_service_type_strict(token))
+ goto fail;
+
+ i->type = token;
+ token = NULL;
+ } else {
+ char *fst;
+
+ /* This is not the first token, hence a subtype */
+
+ if (!(fst = avahi_strdup_printf("%s._sub.%s", token, i->type)))
+ goto fail;
+
+ if (!avahi_is_valid_service_subtype(fst)) {
+ avahi_free(fst);
+ goto fail;
+ }
+
+ i->subtypes = avahi_string_list_add(i->subtypes, fst);
+ avahi_free(fst);
+
+ avahi_free(token);
+ token = NULL;
+
+ i->n_subtypes++;
+ }
+
+ t += l;
+
+ if (*t == ',')
+ t++;
+ }
+
+ if (i->type)
+ return 0;
+
+fail:
+ type_info_free(i);
+ avahi_free(token);
+ return -1;
+}
+
static const char *add_trailing_dot(const char *s, char *buf, size_t buf_len) {
if (!s)
return NULL;
char command;
assert(fd >= 0);
-
+
if ((r = read(fd, &command, 1)) != 1) {
fprintf(stderr, __FILE__": read() failed: %s\n", r < 0 ? strerror(errno) : "EOF");
return -1;
static int poll_func(struct pollfd *ufds, unsigned int nfds, int timeout, void *userdata) {
DNSServiceRef sdref = userdata;
int ret;
-
+
assert(sdref);
-
+
ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
/* fprintf(stderr, "pre-syscall\n"); */
ret = poll(ufds, nfds, timeout);
/* fprintf(stderr, "post-syscall\n"); */
-
+
ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
return ret;
sigfillset(&mask);
pthread_sigmask(SIG_BLOCK, &mask, NULL);
-
+
sdref->thread = pthread_self();
sdref->thread_running = 1;
break;
/* fprintf(stderr, "Command: %c\n", command); */
-
+
switch (command) {
case COMMAND_POLL: {
for (;;) {
errno = 0;
-
+
if ((ret = avahi_simple_poll_run(sdref->simple_poll)) < 0) {
if (errno == EINTR)
continue;
-
+
fprintf(stderr, __FILE__": avahi_simple_poll_run() failed: %s\n", strerror(errno));
}
if (write_command(sdref->thread_fd, ret < 0 ? COMMAND_POLL_FAILED : COMMAND_POLL_DONE) < 0)
break;
-
+
break;
}
case COMMAND_QUIT:
return NULL;
}
-
+
}
return NULL;
sdref->domain_browser = NULL;
sdref->entry_group = NULL;
- sdref->service_name = sdref->service_name_chosen = sdref->service_regtype = sdref->service_domain = sdref->service_host = NULL;
+ sdref->service_name = sdref->service_name_chosen = sdref->service_domain = sdref->service_host = NULL;
sdref->service_txt = NULL;
+ type_info_init(&sdref->type_info);
+
ASSERT_SUCCESS(pthread_mutexattr_init(&mutex_attr));
pthread_mutexattr_settype(&mutex_attr, PTHREAD_MUTEX_RECURSIVE);
ASSERT_SUCCESS(pthread_mutex_init(&sdref->mutex, &mutex_attr));
/* Queue an initial POLL command for the thread */
if (write_command(sdref->main_fd, COMMAND_POLL) < 0)
goto fail;
-
+
if (pthread_create(&sdref->thread, NULL, thread_func, sdref) != 0)
goto fail;
sdref->thread_running = 1;
-
+
return sdref;
fail:
static void sdref_free(DNSServiceRef sdref) {
assert(sdref);
-
+
if (sdref->thread_running) {
ASSERT_SUCCESS(write_command(sdref->main_fd, COMMAND_QUIT));
avahi_simple_poll_wakeup(sdref->simple_poll);
avahi_free(sdref->service_name);
avahi_free(sdref->service_name_chosen);
- avahi_free(sdref->service_regtype);
avahi_free(sdref->service_domain);
avahi_free(sdref->service_host);
+ type_info_free(&sdref->type_info);
+
avahi_string_list_free(sdref->service_txt);
-
+
avahi_free(sdref);
}
}
int DNSSD_API DNSServiceRefSockFD(DNSServiceRef sdref) {
+
+ AVAHI_WARN_LINKAGE;
+
if (!sdref || sdref->n_ref <= 0)
return -1;
- AVAHI_WARN_LINKAGE;
-
return sdref->main_fd;
}
DNSServiceErrorType DNSSD_API DNSServiceProcessResult(DNSServiceRef sdref) {
DNSServiceErrorType ret = kDNSServiceErr_Unknown;
- assert(sdref);
- assert(sdref->n_ref >= 1);
-
AVAHI_WARN_LINKAGE;
- ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
+ if (!sdref || sdref->n_ref <= 0)
+ return kDNSServiceErr_BadParam;
sdref_ref(sdref);
-
+
+ ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
+
/* Cleanup notification socket */
if (read_command(sdref->main_fd) != COMMAND_POLL_DONE)
goto finish;
-
+
if (avahi_simple_poll_dispatch(sdref->simple_poll) < 0)
goto finish;
/* Request the poll */
if (write_command(sdref->main_fd, COMMAND_POLL) < 0)
goto finish;
-
+
ret = kDNSServiceErr_NoError;
-
+
finish:
+ ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
+
sdref_unref(sdref);
- ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
-
return ret;
}
type = add_trailing_dot(type, type_fixed, sizeof(type_fixed));
domain = add_trailing_dot(domain, domain_fixed, sizeof(domain_fixed));
-
+
switch (event) {
case AVAHI_BROWSER_NEW:
sdref->service_browser_callback(sdref, kDNSServiceFlagsAdd, interface, kDNSServiceErr_NoError, name, type, domain, sdref->context);
case AVAHI_BROWSER_FAILURE:
sdref->service_browser_callback(sdref, 0, interface, map_error(avahi_client_errno(sdref->client)), NULL, NULL, NULL, sdref->context);
break;
-
+
case AVAHI_BROWSER_CACHE_EXHAUSTED:
case AVAHI_BROWSER_ALL_FOR_NOW:
break;
static void generic_client_callback(AvahiClient *s, AvahiClientState state, void* userdata) {
DNSServiceRef sdref = userdata;
int error = kDNSServiceErr_Unknown;
-
+
assert(s);
assert(sdref);
assert(sdref->n_ref >= 1);
sdref->service_resolver_callback(sdref, 0, 0, error, NULL, NULL, 0, 0, NULL, sdref->context);
else if (sdref->domain_browser_callback)
sdref->domain_browser_callback(sdref, 0, 0, error, NULL, sdref->context);
+ else if (sdref->query_resolver_callback)
+ sdref->query_resolver_callback(sdref, 0, 0, error, NULL, 0, 0, 0, NULL, 0, sdref->context);
break;
}
DNSServiceErrorType DNSSD_API DNSServiceBrowse(
- DNSServiceRef *ret_sdref,
- DNSServiceFlags flags,
- uint32_t interface,
- const char *regtype,
- const char *domain,
- DNSServiceBrowseReply callback,
- void *context) {
+ DNSServiceRef *ret_sdref,
+ DNSServiceFlags flags,
+ uint32_t interface,
+ const char *regtype,
+ const char *domain,
+ DNSServiceBrowseReply callback,
+ void *context) {
DNSServiceErrorType ret = kDNSServiceErr_Unknown;
int error;
DNSServiceRef sdref = NULL;
AvahiIfIndex ifindex;
-
+ struct type_info type_info;
+
AVAHI_WARN_LINKAGE;
-
- assert(ret_sdref);
- assert(regtype);
- assert(callback);
+
+ if (!ret_sdref || !regtype)
+ return kDNSServiceErr_BadParam;
+ *ret_sdref = NULL;
if (interface == kDNSServiceInterfaceIndexLocalOnly || flags != 0) {
AVAHI_WARN_UNSUPPORTED;
return kDNSServiceErr_Unsupported;
}
- if (!(sdref = sdref_new()))
+ type_info_init(&type_info);
+
+ if (type_info_parse(&type_info, regtype) < 0 || type_info.n_subtypes > 1) {
+ type_info_free(&type_info);
+
+ if (!avahi_is_valid_service_type_generic(regtype))
+ return kDNSServiceErr_Unsupported;
+ } else
+ regtype = type_info.subtypes ? (char*) type_info.subtypes->text : type_info.type;
+
+ if (!(sdref = sdref_new())) {
+ type_info_free(&type_info);
return kDNSServiceErr_Unknown;
+ }
sdref->context = context;
sdref->service_browser_callback = callback;
ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
-
+
if (!(sdref->client = avahi_client_new(avahi_simple_poll_get(sdref->simple_poll), 0, generic_client_callback, sdref, &error))) {
ret = map_error(error);
goto finish;
}
ifindex = interface == kDNSServiceInterfaceIndexAny ? AVAHI_IF_UNSPEC : (AvahiIfIndex) interface;
-
+
if (!(sdref->service_browser = avahi_service_browser_new(sdref->client, ifindex, AVAHI_PROTO_UNSPEC, regtype, domain, 0, service_browser_callback, sdref))) {
ret = map_error(avahi_client_errno(sdref->client));
goto finish;
}
-
+
ret = kDNSServiceErr_NoError;
*ret_sdref = sdref;
-
+
finish:
ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
-
+
if (ret != kDNSServiceErr_NoError)
DNSServiceRefDeallocate(sdref);
+ type_info_free(&type_info);
+
return ret;
}
assert(ret == AVAHI_OK);
strcat(full_name, ".");
-
- sdref->service_resolver_callback(sdref, 0, interface, kDNSServiceErr_NoError, full_name, host_name, htons(port), l, p, sdref->context);
+
+ sdref->service_resolver_callback(sdref, 0, interface, kDNSServiceErr_NoError, full_name, host_name, htons(port), l, (unsigned char*) p, sdref->context);
avahi_free(p);
break;
AVAHI_WARN_LINKAGE;
- assert(ret_sdref);
- assert(name);
- assert(regtype);
- assert(domain);
- assert(callback);
+ if (!ret_sdref || !name || !regtype || !domain || !callback)
+ return kDNSServiceErr_BadParam;
+ *ret_sdref = NULL;
if (interface == kDNSServiceInterfaceIndexLocalOnly || flags != 0) {
AVAHI_WARN_UNSUPPORTED;
sdref->service_resolver_callback = callback;
ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
-
+
if (!(sdref->client = avahi_client_new(avahi_simple_poll_get(sdref->simple_poll), 0, generic_client_callback, sdref, &error))) {
ret = map_error(error);
goto finish;
}
ifindex = interface == kDNSServiceInterfaceIndexAny ? AVAHI_IF_UNSPEC : (AvahiIfIndex) interface;
-
+
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))) {
ret = map_error(avahi_client_errno(sdref->client));
goto finish;
}
-
+
ret = kDNSServiceErr_NoError;
*ret_sdref = sdref;
-
+
finish:
ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
-
+
if (ret != kDNSServiceErr_NoError)
DNSServiceRefDeallocate(sdref);
int DNSSD_API DNSServiceConstructFullName (
char *fullName,
- const char *service,
+ const char *service,
const char *regtype,
const char *domain) {
AVAHI_WARN_LINKAGE;
- assert(fullName);
- assert(regtype);
- assert(domain);
+ if (!fullName || !regtype || !domain)
+ return -1;
if (avahi_service_name_join(fullName, kDNSServiceMaxDomainName, service, regtype, domain) < 0)
return -1;
-
+
return 0;
}
case AVAHI_BROWSER_FAILURE:
sdref->domain_browser_callback(sdref, 0, interface, map_error(avahi_client_errno(sdref->client)), domain, sdref->context);
break;
-
+
case AVAHI_BROWSER_CACHE_EXHAUSTED:
case AVAHI_BROWSER_ALL_FOR_NOW:
break;
AVAHI_WARN_LINKAGE;
- assert(ret_sdref);
- assert(callback);
+ if (!ret_sdref || !callback)
+ return kDNSServiceErr_BadParam;
+ *ret_sdref = NULL;
if (interface == kDNSServiceInterfaceIndexLocalOnly ||
(flags != kDNSServiceFlagsBrowseDomains && flags != kDNSServiceFlagsRegistrationDomains)) {
sdref->domain_browser_callback = callback;
ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
-
+
if (!(sdref->client = avahi_client_new(avahi_simple_poll_get(sdref->simple_poll), 0, generic_client_callback, sdref, &error))) {
ret = map_error(error);
goto finish;
}
ifindex = interface == kDNSServiceInterfaceIndexAny ? AVAHI_IF_UNSPEC : (AvahiIfIndex) interface;
-
+
if (!(sdref->domain_browser = avahi_domain_browser_new(sdref->client, ifindex, AVAHI_PROTO_UNSPEC, "local",
flags == kDNSServiceFlagsRegistrationDomains ? AVAHI_DOMAIN_BROWSER_REGISTER : AVAHI_DOMAIN_BROWSER_BROWSE,
0, domain_browser_callback, sdref))) {
ret = map_error(avahi_client_errno(sdref->client));
goto finish;
}
-
+
ret = kDNSServiceErr_NoError;
*ret_sdref = sdref;
-
+
finish:
ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
-
+
if (ret != kDNSServiceErr_NoError)
DNSServiceRefDeallocate(sdref);
assert(sdref);
assert(sdref->n_ref >= 1);
- assert(sdref->service_register_callback);
+ if (!sdref->service_register_callback)
+ return;
- regtype = add_trailing_dot(sdref->service_regtype, regtype_fixed, sizeof(regtype_fixed));
+ regtype = add_trailing_dot(sdref->type_info.type, regtype_fixed, sizeof(regtype_fixed));
domain = add_trailing_dot(sdref->service_domain, domain_fixed, sizeof(domain_fixed));
-
+
sdref->service_register_callback(
sdref, 0, error,
sdref->service_name_chosen ? sdref->service_name_chosen : sdref->service_name,
static int reg_create_service(DNSServiceRef sdref) {
int ret;
- const char *real_type;
-
+ AvahiStringList *l;
+
assert(sdref);
assert(sdref->n_ref >= 1);
- real_type = avahi_get_type_from_subtype(sdref->service_regtype);
-
if ((ret = avahi_entry_group_add_service_strlst(
sdref->entry_group,
sdref->service_interface,
AVAHI_PROTO_UNSPEC,
0,
sdref->service_name_chosen,
- real_type ? real_type : sdref->service_regtype,
+ sdref->type_info.type,
sdref->service_domain,
sdref->service_host,
sdref->service_port,
sdref->service_txt)) < 0)
return ret;
-
- if (real_type) {
+ for (l = sdref->type_info.subtypes; l; l = l->next) {
/* Create a subtype entry */
if (avahi_entry_group_add_service_subtype(
AVAHI_PROTO_UNSPEC,
0,
sdref->service_name_chosen,
- real_type,
+ sdref->type_info.type,
sdref->service_domain,
- sdref->service_regtype) < 0)
+ (const char*) l->text) < 0)
return ret;
-
}
if ((ret = avahi_entry_group_commit(sdref->entry_group)) < 0)
/* We've not been setup completely */
if (!sdref->entry_group)
return;
-
+
switch (state) {
case AVAHI_CLIENT_FAILURE:
reg_report_error(sdref, kDNSServiceErr_Unknown);
return;
}
}
-
+
+ if (!sdref->service_name_chosen) {
+
+ assert(sdref->service_name);
+
+ if (!(sdref->service_name_chosen = avahi_strdup(sdref->service_name))) {
+ reg_report_error(sdref, kDNSServiceErr_NoMemory);
+ return;
+ }
+ }
+
/* Register the service */
if ((ret = reg_create_service(sdref)) < 0) {
reg_report_error(sdref, map_error(ret));
return;
}
-
+
break;
}
-
+
case AVAHI_CLIENT_S_COLLISION:
+ case AVAHI_CLIENT_S_REGISTERING:
/* Remove our entry */
avahi_entry_group_reset(sdref->entry_group);
-
+
break;
case AVAHI_CLIENT_CONNECTING:
- case AVAHI_CLIENT_S_REGISTERING:
/* Ignore */
break;
}
switch (state) {
case AVAHI_ENTRY_GROUP_ESTABLISHED:
+
/* Inform the user */
reg_report_error(sdref, kDNSServiceErr_NoError);
case AVAHI_ENTRY_GROUP_COLLISION: {
char *n;
int ret;
-
+
/* Remove our entry */
avahi_entry_group_reset(sdref->entry_group);
reg_report_error(sdref, map_error(ret));
return;
}
-
+
break;
}
/* Inform the user */
reg_report_error(sdref, map_error(avahi_client_errno(sdref->client)));
break;
-
+
}
}
DNSServiceErrorType DNSSD_API DNSServiceRegister (
- DNSServiceRef *ret_sdref,
- DNSServiceFlags flags,
- uint32_t interface,
- const char *name,
- const char *regtype,
- const char *domain,
- const char *host,
- uint16_t port,
- uint16_t txtLen,
- const void *txtRecord,
- DNSServiceRegisterReply callback,
- void *context) {
+ DNSServiceRef *ret_sdref,
+ DNSServiceFlags flags,
+ uint32_t interface,
+ const char *name,
+ const char *regtype,
+ const char *domain,
+ const char *host,
+ uint16_t port,
+ uint16_t txtLen,
+ const void *txtRecord,
+ DNSServiceRegisterReply callback,
+ void *context) {
DNSServiceErrorType ret = kDNSServiceErr_Unknown;
int error;
DNSServiceRef sdref = NULL;
AvahiStringList *txt = NULL;
+ struct type_info type_info;
AVAHI_WARN_LINKAGE;
- assert(ret_sdref);
- assert(callback);
- assert(regtype);
+ if (!ret_sdref || !regtype)
+ return kDNSServiceErr_BadParam;
+ *ret_sdref = NULL;
+
+ if (!txtRecord) {
+ txtLen = 1;
+ txtRecord = "";
+ }
if (interface == kDNSServiceInterfaceIndexLocalOnly || flags) {
AVAHI_WARN_UNSUPPORTED;
return kDNSServiceErr_Unsupported;
}
- if (txtRecord && txtLen > 0)
+ if (txtLen > 0)
if (avahi_string_list_parse(txtRecord, txtLen, &txt) < 0)
return kDNSServiceErr_Invalid;
-
+
+ if (type_info_parse(&type_info, regtype) < 0) {
+ avahi_string_list_free(txt);
+ return kDNSServiceErr_Invalid;
+ }
+
if (!(sdref = sdref_new())) {
avahi_string_list_free(txt);
+ type_info_free(&type_info);
return kDNSServiceErr_Unknown;
}
sdref->context = context;
sdref->service_register_callback = callback;
+ sdref->type_info = type_info;
sdref->service_name = avahi_strdup(name);
- sdref->service_regtype = regtype ? avahi_normalize_name_strdup(regtype) : NULL;
sdref->service_domain = domain ? avahi_normalize_name_strdup(domain) : NULL;
sdref->service_host = host ? avahi_normalize_name_strdup(host) : NULL;
sdref->service_interface = interface == kDNSServiceInterfaceIndexAny ? AVAHI_IF_UNSPEC : (AvahiIfIndex) interface;
sdref->service_txt = txt;
/* Some OOM checking would be cool here */
-
+
ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
-
+
if (!(sdref->client = avahi_client_new(avahi_simple_poll_get(sdref->simple_poll), 0, reg_client_callback, sdref, &error))) {
ret = map_error(error);
goto finish;
goto finish;
}
-
+
if ((error = reg_create_service(sdref)) < 0) {
ret = map_error(error);
goto finish;
}
}
-
+
ret = kDNSServiceErr_NoError;
*ret_sdref = sdref;
-
+
finish:
ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
-
+
if (ret != kDNSServiceErr_NoError)
DNSServiceRefDeallocate(sdref);
return ret;
}
+DNSServiceErrorType DNSSD_API DNSServiceUpdateRecord(
+ DNSServiceRef sdref,
+ DNSRecordRef rref,
+ DNSServiceFlags flags,
+ uint16_t rdlen,
+ const void *rdata,
+ AVAHI_GCC_UNUSED uint32_t ttl) {
+
+ int ret = kDNSServiceErr_Unknown;
+ AvahiStringList *txt = NULL;
+
+ AVAHI_WARN_LINKAGE;
+
+ if (!sdref || sdref->n_ref <= 0)
+ return kDNSServiceErr_BadParam;
+
+ if (flags || rref) {
+ AVAHI_WARN_UNSUPPORTED;
+ return kDNSServiceErr_Unsupported;
+ }
+
+ if (rdlen > 0)
+ if (avahi_string_list_parse(rdata, rdlen, &txt) < 0)
+ return kDNSServiceErr_Invalid;
+
+ ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
+
+ if (!avahi_string_list_equal(txt, sdref->service_txt)) {
+
+ avahi_string_list_free(sdref->service_txt);
+ sdref->service_txt = txt;
+
+ if (avahi_client_get_state(sdref->client) == AVAHI_CLIENT_S_RUNNING &&
+ sdref->entry_group &&
+ (avahi_entry_group_get_state(sdref->entry_group) == AVAHI_ENTRY_GROUP_ESTABLISHED ||
+ avahi_entry_group_get_state(sdref->entry_group) == AVAHI_ENTRY_GROUP_REGISTERING))
+
+ if (avahi_entry_group_update_service_txt_strlst(
+ sdref->entry_group,
+ sdref->service_interface,
+ AVAHI_PROTO_UNSPEC,
+ 0,
+ sdref->service_name_chosen,
+ sdref->type_info.type,
+ sdref->service_domain,
+ sdref->service_txt) < 0) {
+
+ ret = map_error(avahi_client_errno(sdref->client));
+ goto finish;
+ }
+
+ } else
+ avahi_string_list_free(txt);
+
+ ret = kDNSServiceErr_NoError;
+
+finish:
+ ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
+
+ return ret;
+}
+
+static void query_resolver_callback(
+ AvahiRecordBrowser *r,
+ AvahiIfIndex interface,
+ AVAHI_GCC_UNUSED AvahiProtocol protocol,
+ AvahiBrowserEvent event,
+ const char *name,
+ uint16_t clazz,
+ uint16_t type,
+ const void* rdata,
+ size_t size,
+ AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
+ void *userdata) {
+
+ DNSServiceRef sdref = userdata;
+
+ assert(r);
+ assert(sdref);
+ assert(sdref->n_ref >= 1);
+
+ switch (event) {
+
+ case AVAHI_BROWSER_NEW:
+ case AVAHI_BROWSER_REMOVE: {
+
+ DNSServiceFlags qflags = 0;
+ if (event == AVAHI_BROWSER_NEW)
+ qflags |= kDNSServiceFlagsAdd;
+
+ sdref->query_resolver_callback(sdref, qflags, interface, kDNSServiceErr_NoError, name, type, clazz, size, rdata, 0, sdref->context);
+ break;
+ }
+
+ case AVAHI_BROWSER_ALL_FOR_NOW:
+ case AVAHI_BROWSER_CACHE_EXHAUSTED:
+ /* not implemented */
+ break;
+
+ case AVAHI_BROWSER_FAILURE:
+ sdref->query_resolver_callback(sdref, 0, interface, map_error(avahi_client_errno(sdref->client)), NULL, 0, 0, 0, NULL, 0, sdref->context);
+ break;
+ }
+}
+
+DNSServiceErrorType DNSSD_API DNSServiceQueryRecord (
+ DNSServiceRef *ret_sdref,
+ DNSServiceFlags flags,
+ uint32_t interface,
+ const char *fullname,
+ uint16_t type,
+ uint16_t clazz,
+ DNSServiceQueryRecordReply callback,
+ void *context) {
+
+ DNSServiceErrorType ret = kDNSServiceErr_Unknown;
+ int error;
+ DNSServiceRef sdref = NULL;
+ AvahiIfIndex ifindex;
+
+ AVAHI_WARN_LINKAGE;
+
+ if (!ret_sdref || !fullname)
+ return kDNSServiceErr_BadParam;
+ *ret_sdref = NULL;
+
+ if (interface == kDNSServiceInterfaceIndexLocalOnly || flags != 0) {
+ AVAHI_WARN_UNSUPPORTED;
+ return kDNSServiceErr_Unsupported;
+ }
+
+ if (!(sdref = sdref_new()))
+ return kDNSServiceErr_Unknown;
+
+ sdref->context = context;
+ sdref->query_resolver_callback = callback;
+
+ ASSERT_SUCCESS(pthread_mutex_lock(&sdref->mutex));
+
+ if (!(sdref->client = avahi_client_new(avahi_simple_poll_get(sdref->simple_poll), 0, generic_client_callback, sdref, &error))) {
+ ret = map_error(error);
+ goto finish;
+ }
+
+ ifindex = interface == kDNSServiceInterfaceIndexAny ? AVAHI_IF_UNSPEC : (AvahiIfIndex) interface;
+
+ if (!(sdref->record_browser = avahi_record_browser_new(sdref->client, ifindex, AVAHI_PROTO_UNSPEC, fullname, clazz, type, 0, query_resolver_callback, sdref))) {
+ ret = map_error(avahi_client_errno(sdref->client));
+ goto finish;
+ }
+
+ ret = kDNSServiceErr_NoError;
+ *ret_sdref = sdref;
+
+finish:
+
+ ASSERT_SUCCESS(pthread_mutex_unlock(&sdref->mutex));
+
+ if (ret != kDNSServiceErr_NoError)
+ DNSServiceRefDeallocate(sdref);
+
+ return ret;
+}
projects / catta / blobdiff