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
26 #include <avahi-client/client.h>
27 #include <avahi-common/dbus.h>
28 #include <avahi-common/llist.h>
29 #include <avahi-common/error.h>
30 #include <avahi-common/dbus.h>
31 #include <avahi-common/malloc.h>
32 #include <avahi-common/dbus-watch-glue.h>
37 #include <dbus/dbus.h>
44 int avahi_client_set_errno (AvahiClient *client, int error) {
47 return client->error = error;
50 static void client_set_state (AvahiClient *client, AvahiServerState state) {
53 if (client->state == state)
56 client->state = state;
59 client->callback (client, state, client->userdata);
62 static DBusHandlerResult
63 filter_func (DBusConnection *bus, DBusMessage *message, void *data)
65 AvahiClient *client = data;
68 printf ("dbus: interface=%s, path=%s, member=%s\n",
69 dbus_message_get_interface (message),
70 dbus_message_get_path (message),
71 dbus_message_get_member (message));
73 dbus_error_init (&error);
75 if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
76 char *name, *old, *new;
77 dbus_message_get_args(message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID);
79 if (dbus_error_is_set (&error)) {
80 dbus_error_free (&error);
84 if (strcmp (name, AVAHI_DBUS_NAME) == 0) {
86 if (old == NULL && new != NULL) {
87 client_set_state (client, AVAHI_CLIENT_RECONNECTED);
88 } else if (old != NULL && new == NULL) {
89 client_set_state (client, AVAHI_CLIENT_DISCONNECTED);
90 /* XXX: we really need to expire all entry groups */
93 } else if (dbus_message_is_signal (message, AVAHI_DBUS_NAME, "StateChanged")) {
95 printf ("server statechange\n");
96 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged")) {
98 AvahiEntryGroup *n, *group = NULL;
99 path = dbus_message_get_path (message);
101 for (n = client->groups; n != NULL; n = n->groups_next)
103 if (strcmp (n->path, path) == 0)
112 dbus_message_get_args (message, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
113 if (dbus_error_is_set (&error))
116 avahi_entry_group_state_change (group, state);
118 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemNew")) {
119 return avahi_domain_browser_event (client, AVAHI_BROWSER_NEW, message);
120 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemRemove")) {
121 return avahi_domain_browser_event (client, AVAHI_BROWSER_REMOVE, message);
122 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemNew")) {
123 return avahi_service_type_browser_event (client, AVAHI_BROWSER_NEW, message);
124 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemRemove")) {
125 return avahi_service_type_browser_event (client, AVAHI_BROWSER_REMOVE, message);
126 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemNew")) {
127 return avahi_service_browser_event (client, AVAHI_BROWSER_NEW, message);
128 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemRemove")) {
129 return avahi_service_browser_event (client, AVAHI_BROWSER_REMOVE, message);
132 return DBUS_HANDLER_RESULT_HANDLED;
135 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
138 static int translate_dbus_error(const DBusError *error) {
141 return avahi_error_dbus_to_number (error->name);
144 static int get_server_state(AvahiClient *client, int *ret_error) {
145 DBusMessage *message, *reply;
152 dbus_error_init(&error);
154 if (!(message = dbus_message_new_method_call(AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState")))
157 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
158 dbus_message_unref(message);
163 if (!(dbus_message_get_args(reply, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID)))
166 client_set_state(client, (AvahiServerState) state);
171 if (dbus_error_is_set(&error)) {
172 e = translate_dbus_error(&error);
173 dbus_error_free(&error);
175 e = AVAHI_ERR_NO_MEMORY;
183 AvahiClient *avahi_client_new(const AvahiPoll *poll_api, AvahiClientCallback callback, void *userdata, int *ret_error) {
184 AvahiClient *client = NULL;
187 dbus_error_init (&error);
189 if (!(client = avahi_new(AvahiClient, 1))) {
191 *ret_error = AVAHI_ERR_NO_MEMORY;
195 client->poll_api = poll_api;
196 client->error = AVAHI_OK;
197 client->callback = callback;
198 client->userdata = userdata;
199 client->state = AVAHI_SERVER_INVALID;
201 AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, client->groups);
202 AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, client->domain_browsers);
203 AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, client->service_browsers);
204 AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, client->service_type_browsers);
206 client->bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
207 if (dbus_error_is_set (&error)) {
209 *ret_error = translate_dbus_error(&error);
213 if (avahi_dbus_connection_glue(client->bus, poll_api) < 0) {
215 *ret_error = AVAHI_ERR_NO_MEMORY; /* Not optimal */
219 if (!dbus_connection_add_filter (client->bus, filter_func, client, NULL)) {
221 *ret_error = AVAHI_ERR_NO_MEMORY;
228 "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
229 "sender='" AVAHI_DBUS_NAME "', "
230 "path='" AVAHI_DBUS_PATH_SERVER "'",
233 if (dbus_error_is_set (&error)) {
235 *ret_error = translate_dbus_error(&error);
242 "interface='" DBUS_INTERFACE_DBUS "', "
243 "sender='" DBUS_SERVICE_DBUS "', "
244 "path='" DBUS_PATH_DBUS "'",
247 if (dbus_error_is_set (&error)) {
249 *ret_error = translate_dbus_error(&error);
253 if (!(dbus_bus_name_has_owner(client->bus, AVAHI_DBUS_NAME, &error))) {
255 if (dbus_error_is_set (&error)) {
257 *ret_error = translate_dbus_error(&error);
262 *ret_error = AVAHI_ERR_NO_DAEMON;
266 if (get_server_state(client, ret_error) < 0)
274 avahi_client_free(client);
276 if (dbus_error_is_set(&error))
277 dbus_error_free(&error);
282 void avahi_client_free(AvahiClient *client) {
286 dbus_connection_disconnect(client->bus);
287 dbus_connection_unref(client->bus);
290 while (client->groups)
291 avahi_entry_group_free(client->groups);
293 while (client->domain_browsers)
294 avahi_domain_browser_free(client->domain_browsers);
296 while (client->service_browsers)
297 avahi_service_browser_free(client->service_browsers);
299 while (client->service_type_browsers)
300 avahi_service_type_browser_free(client->service_type_browsers);
306 avahi_client_get_string_reply_and_block (AvahiClient *client, const char *method, const char *param)
308 DBusMessage *message;
313 if (client == NULL || method == NULL) return NULL;
315 dbus_error_init (&error);
317 message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method);
321 if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID))
323 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
328 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
330 if (dbus_error_is_set (&error))
332 dbus_error_free (&error);
333 dbus_message_unref (message);
335 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
341 dbus_message_unref (message);
343 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
347 dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID);
349 if (dbus_error_is_set (&error))
351 dbus_error_free (&error);
353 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
357 new = avahi_strdup (ret);
359 avahi_client_set_errno (client, AVAHI_OK);
364 avahi_client_get_version_string (AvahiClient *client)
366 return avahi_client_get_string_reply_and_block (client, "GetVersionString", NULL);
370 avahi_client_get_domain_name (AvahiClient *client)
372 return avahi_client_get_string_reply_and_block (client, "GetDomainName", NULL);
376 avahi_client_get_host_name (AvahiClient *client)
378 return avahi_client_get_string_reply_and_block (client, "GetHostName", NULL);
382 avahi_client_get_host_name_fqdn (AvahiClient *client)
384 return avahi_client_get_string_reply_and_block (client, "GetHostNameFqdn", NULL);