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 errno)
46 if (client == NULL) return errno;
48 client->errno = errno;
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);
169 dbus_error_init (&error);
171 dbus_message_get_args (message, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
173 if (dbus_error_is_set (&error))
175 fprintf (stderr, "internal error parsing entrygroup statechange for %s\n", group->path);
179 printf ("statechange (%s) to %d\n", group->path, state);
181 avahi_entry_group_state_change (group, state);
185 return DBUS_HANDLER_RESULT_HANDLED;
188 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
192 avahi_client_new (AvahiClientCallback callback, void *user_data)
194 AvahiClient *tmp = NULL;
197 tmp = g_new (AvahiClient, 1);
202 AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, tmp->groups);
204 dbus_error_init (&error);
206 tmp->bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
208 dbus_connection_setup_with_g_main (tmp->bus, NULL);
210 if (dbus_error_is_set (&error)) {
211 fprintf(stderr, "Error getting system d-bus: %s\n", error.message);
212 dbus_error_free (&error);
216 dbus_connection_set_exit_on_disconnect (tmp->bus, FALSE);
218 if (!dbus_connection_add_filter (tmp->bus, filter_func, tmp, NULL))
220 fprintf (stderr, "Failed to add d-bus filter\n");
224 dbus_bus_add_match (tmp->bus,
226 "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
227 "sender='" AVAHI_DBUS_NAME "', "
228 "path='" AVAHI_DBUS_PATH_SERVER "'",
231 if (dbus_error_is_set (&error))
233 fprintf (stderr, "Error adding filter match: %s\n", error.message);
234 dbus_error_free (&error);
239 dbus_bus_add_match (tmp->bus,
241 "interface='" DBUS_INTERFACE_DBUS "', "
242 "sender='" DBUS_SERVICE_DBUS "', "
243 "path='" DBUS_PATH_DBUS "'",
246 if (dbus_error_is_set (&error))
248 fprintf (stderr, "Error adding filter match: %s\n", error.message);
249 dbus_error_free (&error);
253 tmp->callback = callback;
254 tmp->user_data = user_data;
256 avahi_client_schedule_state_request (tmp);
258 avahi_client_set_errno (tmp, AVAHI_OK);
267 avahi_client_get_string_reply_and_block (AvahiClient *client, char *method, char *param)
269 DBusMessage *message;
274 if (client == NULL || method == NULL) return NULL;
276 dbus_error_init (&error);
278 message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, method);
282 if (!dbus_message_append_args (message, DBUS_TYPE_STRING, ¶m, DBUS_TYPE_INVALID))
284 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
285 fprintf (stderr, "Failed to append string argument to %s message\n", method);
290 reply = dbus_connection_send_with_reply_and_block (client->bus, message, -1, &error);
292 if (dbus_error_is_set (&error))
294 fprintf (stderr, "Error sending %s message: %s\n", method, error.message);
295 dbus_error_free (&error);
296 dbus_message_unref (message);
298 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
304 dbus_message_unref (message);
305 fprintf (stderr, "Could not connect to Avahi daemon\n");
307 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
311 dbus_message_get_args (reply, &error, DBUS_TYPE_STRING, &ret, DBUS_TYPE_INVALID);
313 if (dbus_error_is_set (&error))
315 fprintf (stderr, "Failed to parse %s reply: %s\n", method, error.message);
316 dbus_error_free (&error);
318 avahi_client_set_errno (client, AVAHI_ERR_DBUS_ERROR);
324 avahi_client_set_errno (client, AVAHI_OK);
329 avahi_client_get_version_string (AvahiClient *client)
331 return avahi_client_get_string_reply_and_block (client, "GetVersionString", NULL);
335 avahi_client_get_domain_name (AvahiClient *client)
337 return avahi_client_get_string_reply_and_block (client, "GetDomainName", NULL);
341 avahi_client_get_host_name (AvahiClient *client)
343 return avahi_client_get_string_reply_and_block (client, "GetHostName", NULL);
347 avahi_client_get_host_name_fqdn (AvahiClient *client)
349 return avahi_client_get_string_reply_and_block (client, "GetHostNameFqdn", NULL);