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-rw-r--r--avahi-client/client.c147
1 files changed, 97 insertions, 50 deletions
diff --git a/avahi-client/client.c b/avahi-client/client.c
index fcb4921..e99956a 100644
--- a/avahi-client/client.c
+++ b/avahi-client/client.c
@@ -43,20 +43,23 @@
int
avahi_client_set_errno (AvahiClient *client, int error)
{
- if (client == NULL) return error;
+ assert(client);
client->error = error;
return error;
}
-static
-void avahi_client_state_change (AvahiClient *client, int state)
-{
- if (client == NULL || client->callback == NULL)
+static void avahi_client_set_state (AvahiClient *client, AvahiServerState state) {
+ assert(state);
+
+ if (client->state == state)
return;
- client->callback (client, state, client->user_data);
+ client->state = state;
+
+ if (client->callback)
+ client->callback (client, state, client->userdata);
}
static void
@@ -80,7 +83,7 @@ avahi_client_state_request_callback (DBusPendingCall *call, void *data)
if (dbus_error_is_set (&error))
return;
- avahi_client_state_change (client, state);
+ avahi_client_set_state (client, state);
} else if (type == DBUS_MESSAGE_TYPE_ERROR) {
dbus_set_error_from_message (&error, reply);
}
@@ -94,6 +97,10 @@ avahi_client_schedule_state_request (AvahiClient *client)
DBusMessage *message;
DBusPendingCall *pcall;
+ /*** Lennart says that this can't happen this way since it will
+ * never be called if no main loop is used. This call has to
+ * happen synchronously */
+
if (client == NULL) return;
message = dbus_message_new_method_call (AVAHI_DBUS_NAME, AVAHI_DBUS_PATH_SERVER, AVAHI_DBUS_INTERFACE_SERVER, "GetState");
@@ -128,9 +135,9 @@ filter_func (DBusConnection *bus, DBusMessage *message, void *data)
if (strcmp (name, AVAHI_DBUS_NAME) == 0) {
if (old == NULL && new != NULL) {
- avahi_client_state_change (client, AVAHI_CLIENT_RECONNECTED);
+ avahi_client_set_state (client, AVAHI_CLIENT_RECONNECTED);
} else if (old != NULL && new == NULL) {
- avahi_client_state_change (client, AVAHI_CLIENT_DISCONNECTED);
+ avahi_client_set_state (client, AVAHI_CLIENT_DISCONNECTED);
/* XXX: we really need to expire all entry groups */
}
}
@@ -153,8 +160,6 @@ filter_func (DBusConnection *bus, DBusMessage *message, void *data)
if (group != NULL) {
int state;
- DBusError error;
- dbus_error_init (&error);
dbus_message_get_args (message, &error, DBUS_TYPE_INT32, &state, DBUS_TYPE_INVALID);
if (dbus_error_is_set (&error))
goto out;
@@ -181,74 +186,116 @@ out:
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
+static int translate_dbus_error(const DBusError *error) {
+ assert(error);
+
+ /*** FIXME! Some more eloquent error translation should happen here */
+
+ return AVAHI_ERR_DBUS_ERROR;
+}
+
AvahiClient *
-avahi_client_new (const AvahiPoll *poll_api, AvahiClientCallback callback, void *user_data)
+avahi_client_new (const AvahiPoll *poll_api, AvahiClientCallback callback, void *userdata, int *ret_error)
{
- AvahiClient *tmp = NULL;
+ AvahiClient *client = NULL;
DBusError error;
dbus_error_init (&error);
- if (!(tmp = avahi_new(AvahiClient, 1)))
+ if (!(client = avahi_new(AvahiClient, 1))) {
+ if (ret_error)
+ *ret_error = AVAHI_ERR_NO_MEMORY;
goto fail;
+ }
- AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, tmp->groups);
- AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, tmp->domain_browsers);
- AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, tmp->service_browsers);
- AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, tmp->service_type_browsers);
-
- tmp->poll_api = poll_api;
- tmp->bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
+ client->poll_api = poll_api;
+ client->error = AVAHI_OK;
+ client->callback = callback;
+ client->userdata = userdata;
+ client->state = AVAHI_SERVER_INVALID;
+
+ AVAHI_LLIST_HEAD_INIT(AvahiEntryGroup, client->groups);
+ AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, client->domain_browsers);
+ AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, client->service_browsers);
+ AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, client->service_type_browsers);
+ client->bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
if (dbus_error_is_set (&error)) {
+ if (ret_error)
+ *ret_error = translate_dbus_error(&error);
goto fail;
}
-/* dbus_connection_setup_with_g_main (tmp->bus, NULL); */
-/* dbus_connection_set_exit_on_disconnect (tmp->bus, FALSE); */
-
- if (avahi_dbus_connection_glue(tmp->bus, poll_api) < 0)
+ if (avahi_dbus_connection_glue(client->bus, poll_api) < 0) {
+ if (ret_error)
+ *ret_error = AVAHI_ERR_NO_MEMORY; /* Not optimal */
goto fail;
+ }
- if (!dbus_connection_add_filter (tmp->bus, filter_func, tmp, NULL))
- {
+ if (!dbus_connection_add_filter (client->bus, filter_func, client, NULL)) {
+ if (ret_error)
+ *ret_error = AVAHI_ERR_NO_MEMORY;
goto fail;
}
+
+ dbus_bus_add_match(
+ client->bus,
+ "type='signal', "
+ "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
+ "sender='" AVAHI_DBUS_NAME "', "
+ "path='" AVAHI_DBUS_PATH_SERVER "'",
+ &error);
- dbus_bus_add_match (tmp->bus,
- "type='signal', "
- "interface='" AVAHI_DBUS_INTERFACE_SERVER "', "
- "sender='" AVAHI_DBUS_NAME "', "
- "path='" AVAHI_DBUS_PATH_SERVER "'",
- &error);
-
- if (dbus_error_is_set (&error))
- {
+ if (dbus_error_is_set (&error)) {
+ if (ret_error)
+ *ret_error = translate_dbus_error(&error);
goto fail;
}
- dbus_bus_add_match (tmp->bus,
- "type='signal', "
- "interface='" DBUS_INTERFACE_DBUS "', "
- "sender='" DBUS_SERVICE_DBUS "', "
- "path='" DBUS_PATH_DBUS "'",
- &error);
+ dbus_bus_add_match (
+ client->bus,
+ "type='signal', "
+ "interface='" DBUS_INTERFACE_DBUS "', "
+ "sender='" DBUS_SERVICE_DBUS "', "
+ "path='" DBUS_PATH_DBUS "'",
+ &error);
- if (dbus_error_is_set (&error))
- {
+ if (dbus_error_is_set (&error)) {
+ if (ret_error)
+ *ret_error = translate_dbus_error(&error);
goto fail;
}
- tmp->callback = callback;
- tmp->user_data = user_data;
+ if (!(dbus_bus_name_has_owner(client->bus, AVAHI_DBUS_NAME, &error))) {
- avahi_client_schedule_state_request (tmp);
+ if (dbus_error_is_set (&error)) {
+ if (ret_error)
+ *ret_error = translate_dbus_error(&error);
+ goto fail;
+ }
+
+ if (ret_error)
+ *ret_error = AVAHI_ERR_NO_DAEMON;
+ goto fail;
+ }
+
+ /* This can't happen asynchronously, since it is not guaranteed that a main loop is used */
+
+ /*client_get_server_state (client);*/
- avahi_client_set_errno (tmp, AVAHI_OK);
- return tmp;
+ return client;
fail:
- avahi_free (tmp);
+
+ if (client) {
+
+ if (client->bus) {
+ dbus_connection_disconnect(client->bus);
+ dbus_connection_unref(client->bus);
+ }
+
+ avahi_free(client);
+ }
if (dbus_error_is_set(&error))
dbus_error_free(&error);
generated by cgit (git 2.34.1) at 2024-05-05 02:30:00 +0000