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>
34 #define DBUS_API_SUBJECT_TO_CHANGE
35 #include <dbus/dbus.h>
36 #include <dbus/dbus-glib-lowlevel.h>
44 avahi_client_set_errno (AvahiClient *client, int error)
46 if (client == NULL) return error;
48 client->error = error;
54 void avahi_client_state_change (AvahiClient *client, int state)
56 if (client == NULL || client->callback == NULL)
59 client->callback (client, state, client->user_data);
63 avahi_client_state_request_callback (DBusPendingCall *call, void *data)
65 AvahiClient *client = data;
70 dbus_error_init (&error);
72 reply = dbus_pending_call_steal_reply (call);
74 type = dbus_message_get_type (reply);
76 if (type == DBUS_MESSAGE_TYPE_METHOD_RETURN)
78 dbus_message_get_args (reply, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
80 if (dbus_error_is_set (&error))
82 fprintf (stderr, "internal error parsing client state change for client\n");
86 printf ("statechange (client) to %d\n", state);
88 avahi_client_state_change (client, state);
89 } else if (type == DBUS_MESSAGE_TYPE_ERROR) {
90 dbus_set_error_from_message (&error, reply);
91 fprintf (stderr, "Error from reply: %s\n", error.message);
94 dbus_pending_call_unref (call);
98 avahi_client_schedule_state_request (AvahiClient *client)
100 DBusMessage *message;
101 DBusPendingCall *pcall;
103 if (client == NULL) return;
105 message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState");
107 dbus_connection_send_with_reply (client->bus, message, &pcall, -1);
109 dbus_pending_call_set_notify (pcall, avahi_client_state_request_callback, client, NULL);
112 static DBusHandlerResult
113 filter_func (DBusConnection *bus, DBusMessage *message, void *data)
115 AvahiClient *client = data;
118 printf ("dbus: interface=%s, path=%s, member=%s\n",
119 dbus_message_get_interface (message),
120 dbus_message_get_path (message),
121 dbus_message_get_member (message));
123 dbus_error_init (&error);
125 if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
126 gchar *name, *old, *new;
127 dbus_message_get_args(message, &error, DBUS_TYPE_STRING, &name, DBUS_TYPE_STRING, &old, DBUS_TYPE_STRING, &new, DBUS_TYPE_INVALID);
129 if (dbus_error_is_set (&error)) {
130 fprintf(stderr, "Failed to parse NameOwnerChanged message: %s", error.message);
131 dbus_error_free (&error);
135 if (strcmp (name, AVAHI_DBUS_NAME) == 0) {
137 if (old == NULL && new != NULL) {
138 fprintf(stderr, "Avahi Daemon connected\n");
139 avahi_client_state_change (client, AVAHI_CLIENT_RECONNECTED);
140 } else if (old != NULL && new == NULL) {
141 fprintf(stderr, "Avahi Daemon disconnected\n");
142 avahi_client_state_change (client, AVAHI_CLIENT_DISCONNECTED);
143 /* XXX: we really need to expire all entry groups */
146 } else if (dbus_message_is_signal (message, AVAHI_DBUS_NAME, "StateChanged")) {
147 printf ("server statehcange\n");
148 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_ENTRY_GROUP, "StateChanged")) {
150 AvahiEntryGroup *n, *group = NULL;
151 path = dbus_message_get_path (message);
153 for (n = client->groups; n != NULL; n = n->groups_next)
155 if (strcmp (n->path, path) == 0)
164 fprintf (stderr, "Received state change for unknown EntryGroup object (%s)\n", path);
168 dbus_error_init (&error);
169 dbus_message_get_args (message, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
170 if (dbus_error_is_set (&error))
172 fprintf (stderr, "internal error parsing entrygroup statechange for %s\n", group->path);
175 printf ("statechange (%s) to %d\n", group->path, state);
176 avahi_entry_group_state_change (group, state);
178 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemNew")) {
179 return avahi_domain_browser_event (client, AVAHI_BROWSER_NEW, message);
180 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_DOMAIN_BROWSER, "ItemRemove")) {
181 return avahi_domain_browser_event (client, AVAHI_BROWSER_REMOVE, message);
182 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemNew")) {
183 return avahi_service_type_browser_event (client, AVAHI_BROWSER_NEW, message);
184 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_TYPE_BROWSER, "ItemRemove")) {
185 return avahi_service_type_browser_event (client, AVAHI_BROWSER_REMOVE, message);
186 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemNew")) {
187 return avahi_service_browser_event (client, AVAHI_BROWSER_NEW, message);
188 } else if (dbus_message_is_signal (message, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "ItemRemove")) {
189 return avahi_service_browser_event (client, AVAHI_BROWSER_REMOVE, message);
192 return DBUS_HANDLER_RESULT_HANDLED;
195 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
199 avahi_client_new (AvahiClientCallback callback, void *user_data)
201 AvahiClient *tmp = NULL;
204 dbus_error_init (&error);
206 if (!(tmp = malloc(sizeof(AvahiClient))))
209 AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, tmp->groups);
210 AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, tmp->domain_browsers);
211 AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, tmp->service_browsers);
212 AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, tmp->service_type_browsers);
214 tmp->bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
216 if (dbus_error_is_set (&error)) {
217 fprintf(stderr, "Error getting system d-bus: %s\n", error.message);
221 dbus_connection_setup_with_g_main (tmp->bus, NULL);
222 dbus_connection_set_exit_on_disconnect (tmp->bus, FALSE);
224 if (!dbus_connection_add_filter (tmp->bus, filter_func, tmp, NULL))
226 fprintf (stderr, "Failed to add d-bus filter\n");
230 dbus_bus_add_match (tmp->bus,
232 "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
233 "sender='" AVAHI_DBUS_NAME "', "
234 "path='" AVAHI_DBUS_PATH_SERVER "'",
237 if (dbus_error_is_set (&error))
239 fprintf (stderr, "Error adding filter match: %s\n", error.message);
244 dbus_bus_add_match (tmp->bus,
246 "interface='" DBUS_INTERFACE_DBUS "', "
247 "sender='" DBUS_SERVICE_DBUS "', "
248 "path='" DBUS_PATH_DBUS "'",
251 if (dbus_error_is_set (&error))
253 fprintf (stderr, "Error adding filter match: %s\n", error.message);
257 tmp->callback = callback;
258 tmp->user_data = user_data;
260 avahi_client_schedule_state_request (tmp);
262 avahi_client_set_errno (tmp, AVAHI_OK);
268 if (dbus_error_is_set(&error))
269 dbus_error_free(&error);
275 avahi_client_get_string_reply_and_block (AvahiClient *client, char *method, char *param)
277 DBusMessage *message;
282 if (client == NULL || method == NULL) return NULL;
284 dbus_error_init (&error);
286 message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method);
290 if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID))
292 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
293 fprintf (stderr, "Failed to append string argument to %s message\n", method);
298 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
300 if (dbus_error_is_set (&error))
302 fprintf (stderr, "Error sending %s message: %s\n", method, error.message);
303 dbus_error_free (&error);
304 dbus_message_unref (message);
306 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
312 dbus_message_unref (message);
313 fprintf (stderr, "Could not connect to Avahi daemon\n");
315 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
319 dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID);
321 if (dbus_error_is_set (&error))
323 fprintf (stderr, "Failed to parse %s reply: %s\n", method, error.message);
324 dbus_error_free (&error);
326 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
332 avahi_client_set_errno (client, AVAHI_OK);
337 avahi_client_get_version_string (AvahiClient *client)
339 return avahi_client_get_string_reply_and_block (client, "GetVersionString", NULL);
343 avahi_client_get_domain_name (AvahiClient *client)
345 return avahi_client_get_string_reply_and_block (client, "GetDomainName", NULL);
349 avahi_client_get_host_name (AvahiClient *client)
351 return avahi_client_get_string_reply_and_block (client, "GetHostName", NULL);
355 avahi_client_get_host_name_fqdn (AvahiClient *client)
357 return avahi_client_get_string_reply_and_block (client, "GetHostNameFqdn", NULL);