2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
5 Copyright 2008 Colin Guthrie
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as
9 published by the Free Software Foundation; either version 2 of the
10 License, or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with PulseAudio; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
32 #include <avahi-client/client.h>
33 #include <avahi-client/lookup.h>
34 #include <avahi-common/alternative.h>
35 #include <avahi-common/error.h>
36 #include <avahi-common/domain.h>
37 #include <avahi-common/malloc.h>
39 #include <pulse/xmalloc.h>
40 #include <pulse/util.h>
42 #include <pulsecore/sink.h>
43 #include <pulsecore/source.h>
44 #include <pulsecore/native-common.h>
45 #include <pulsecore/core-util.h>
46 #include <pulsecore/log.h>
47 #include <pulsecore/core-subscribe.h>
48 #include <pulsecore/hashmap.h>
49 #include <pulsecore/modargs.h>
50 #include <pulsecore/namereg.h>
51 #include <pulsecore/avahi-wrap.h>
53 #include "module-raop-discover-symdef.h"
55 PA_MODULE_AUTHOR("Colin Guthrie");
56 PA_MODULE_DESCRIPTION("mDNS/DNS-SD Service Discovery of RAOP devices");
57 PA_MODULE_VERSION(PACKAGE_VERSION);
58 PA_MODULE_LOAD_ONCE(TRUE);
60 #define SERVICE_TYPE_SINK "_raop._tcp"
62 static const char* const valid_modargs[] = {
67 AvahiIfIndex interface;
68 AvahiProtocol protocol;
69 char *name, *type, *domain;
70 uint32_t module_index;
76 AvahiPoll *avahi_poll;
78 AvahiServiceBrowser *sink_browser;
83 static unsigned tunnel_hash(const void *p) {
84 const struct tunnel *t = p;
87 (unsigned) t->interface +
88 (unsigned) t->protocol +
89 pa_idxset_string_hash_func(t->name) +
90 pa_idxset_string_hash_func(t->type) +
91 pa_idxset_string_hash_func(t->domain);
94 static int tunnel_compare(const void *a, const void *b) {
95 const struct tunnel *ta = a, *tb = b;
98 if (ta->interface != tb->interface)
100 if (ta->protocol != tb->protocol)
102 if ((r = strcmp(ta->name, tb->name)))
104 if ((r = strcmp(ta->type, tb->type)))
106 if ((r = strcmp(ta->domain, tb->domain)))
112 static struct tunnel *tunnel_new(
113 AvahiIfIndex interface, AvahiProtocol protocol,
114 const char *name, const char *type, const char *domain) {
117 t = pa_xnew(struct tunnel, 1);
118 t->interface = interface;
119 t->protocol = protocol;
120 t->name = pa_xstrdup(name);
121 t->type = pa_xstrdup(type);
122 t->domain = pa_xstrdup(domain);
123 t->module_index = PA_IDXSET_INVALID;
127 static void tunnel_free(struct tunnel *t) {
135 static void resolver_cb(
136 AvahiServiceResolver *r,
137 AvahiIfIndex interface, AvahiProtocol protocol,
138 AvahiResolverEvent event,
139 const char *name, const char *type, const char *domain,
140 const char *host_name, const AvahiAddress *a, uint16_t port,
141 AvahiStringList *txt,
142 AvahiLookupResultFlags flags,
145 struct userdata *u = userdata;
150 tnl = tunnel_new(interface, protocol, name, type, domain);
152 if (event != AVAHI_RESOLVER_FOUND)
153 pa_log("Resolving of '%s' failed: %s", name, avahi_strerror(avahi_client_errno(u->client)));
155 char *device = NULL, *dname, *vname, *args;
156 char at[AVAHI_ADDRESS_STR_MAX];
160 for (l = txt; l; l = l->next) {
162 pa_assert_se(avahi_string_list_get_pair(l, &key, &value, NULL) == 0);
164 pa_log_debug("Found key: '%s' with value: '%s'", key, value);
165 if (strcmp(key, "device") == 0) {
175 dname = pa_sprintf_malloc("raop.%s.%s", host_name, device);
177 dname = pa_sprintf_malloc("raop.%s", host_name);
179 if (!(vname = pa_namereg_make_valid_name(dname))) {
180 pa_log("Cannot construct valid device name from '%s'.", dname);
188 TODO: allow this syntax of server name in things....
189 args = pa_sprintf_malloc("server=[%s]:%u "
191 avahi_address_snprint(at, sizeof(at), a), port,
193 args = pa_sprintf_malloc("server=%s "
195 avahi_address_snprint(at, sizeof(at), a),
198 pa_log_debug("Loading module-raop-sink with arguments '%s'", args);
200 if ((m = pa_module_load(u->core, "module-raop-sink", args))) {
201 tnl->module_index = m->index;
202 pa_hashmap_put(u->tunnels, tnl, tnl);
213 avahi_service_resolver_free(r);
219 static void browser_cb(
220 AvahiServiceBrowser *b,
221 AvahiIfIndex interface, AvahiProtocol protocol,
222 AvahiBrowserEvent event,
223 const char *name, const char *type, const char *domain,
224 AvahiLookupResultFlags flags,
227 struct userdata *u = userdata;
232 if (flags & AVAHI_LOOKUP_RESULT_LOCAL)
235 t = tunnel_new(interface, protocol, name, type, domain);
237 if (event == AVAHI_BROWSER_NEW) {
239 if (!pa_hashmap_get(u->tunnels, t))
240 if (!(avahi_service_resolver_new(u->client, interface, protocol, name, type, domain, AVAHI_PROTO_UNSPEC, 0, resolver_cb, u)))
241 pa_log("avahi_service_resolver_new() failed: %s", avahi_strerror(avahi_client_errno(u->client)));
243 /* We ignore the returned resolver object here, since the we don't
244 * need to attach any special data to it, and we can still destory
245 * it from the callback */
247 } else if (event == AVAHI_BROWSER_REMOVE) {
250 if ((t2 = pa_hashmap_get(u->tunnels, t))) {
251 pa_module_unload_by_index(u->core, t2->module_index, TRUE);
252 pa_hashmap_remove(u->tunnels, t2);
260 static void client_callback(AvahiClient *c, AvahiClientState state, void *userdata) {
261 struct userdata *u = userdata;
269 case AVAHI_CLIENT_S_REGISTERING:
270 case AVAHI_CLIENT_S_RUNNING:
271 case AVAHI_CLIENT_S_COLLISION:
273 if (!u->sink_browser) {
275 if (!(u->sink_browser = avahi_service_browser_new(
277 AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC,
283 pa_log("avahi_service_browser_new() failed: %s", avahi_strerror(avahi_client_errno(c)));
284 pa_module_unload_request(u->module, TRUE);
290 case AVAHI_CLIENT_FAILURE:
291 if (avahi_client_errno(c) == AVAHI_ERR_DISCONNECTED) {
294 pa_log_debug("Avahi daemon disconnected.");
296 if (!(u->client = avahi_client_new(u->avahi_poll, AVAHI_CLIENT_NO_FAIL, client_callback, u, &error))) {
297 pa_log("avahi_client_new() failed: %s", avahi_strerror(error));
298 pa_module_unload_request(u->module, TRUE);
304 case AVAHI_CLIENT_CONNECTING:
306 if (u->sink_browser) {
307 avahi_service_browser_free(u->sink_browser);
308 u->sink_browser = NULL;
317 int pa__init(pa_module*m) {
320 pa_modargs *ma = NULL;
323 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
324 pa_log("Failed to parse module arguments.");
328 m->userdata = u = pa_xnew(struct userdata, 1);
331 u->sink_browser = NULL;
333 u->tunnels = pa_hashmap_new(tunnel_hash, tunnel_compare);
335 u->avahi_poll = pa_avahi_poll_new(m->core->mainloop);
337 if (!(u->client = avahi_client_new(u->avahi_poll, AVAHI_CLIENT_NO_FAIL, client_callback, u, &error))) {
338 pa_log("pa_avahi_client_new() failed: %s", avahi_strerror(error));
355 void pa__done(pa_module*m) {
359 if (!(u = m->userdata))
363 avahi_client_free(u->client);
366 pa_avahi_poll_free(u->avahi_poll);
371 while ((t = pa_hashmap_steal_first(u->tunnels))) {
372 pa_module_unload_by_index(u->core, t->module_index, TRUE);
376 pa_hashmap_free(u->tunnels, NULL, NULL);