X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=gdbus%2Fwatch.c;h=1ca3c4bda3cb0f7a614ed0e4367ec64fa0cd4807;hb=d180a9d2152fdd28ea68f0fbe0ef52e9c7ceac5a;hp=42e158febd535b9c7188f508933995a57711c368;hpb=3999fdc6a0453f523fd92ad67e314c6a77fc26a4;p=platform%2Fupstream%2Fconnman.git

diff --git a/gdbus/watch.c b/gdbus/watch.c
old mode 100644
new mode 100755
index 42e158f..1ca3c4b
--- a/gdbus/watch.c
+++ b/gdbus/watch.c
@@ -2,7 +2,7 @@
  *
  *  D-Bus helper library
  *
- *  Copyright (C) 2004-2010  Marcel Holtmann <marcel@holtmann.org>
+ *  Copyright (C) 2004-2011  Marcel Holtmann <marcel@holtmann.org>
  *
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -43,11 +43,21 @@ static DBusHandlerResult message_filter(DBusConnection *connection,
 static guint listener_id = 0;
 static GSList *listeners = NULL;
 
+struct service_data {
+	DBusConnection *conn;
+	DBusPendingCall *call;
+	char *name;
+	const char *owner;
+	guint id;
+	struct filter_callback *callback;
+};
+
 struct filter_callback {
 	GDBusWatchFunction conn_func;
 	GDBusWatchFunction disc_func;
 	GDBusSignalFunction signal_func;
 	GDBusDestroyFunction destroy_func;
+	struct service_data *data;
 	void *user_data;
 	guint id;
 };
@@ -55,19 +65,22 @@ struct filter_callback {
 struct filter_data {
 	DBusConnection *connection;
 	DBusHandleMessageFunction handle_func;
-	char *sender;
+	char *name;
+	char *owner;
 	char *path;
 	char *interface;
 	char *member;
 	char *argument;
 	GSList *callbacks;
 	GSList *processed;
+	guint name_watch;
 	gboolean lock;
 	gboolean registered;
 };
 
-static struct filter_data *filter_data_find(DBusConnection *connection,
-							const char *sender,
+static struct filter_data *filter_data_find_match(DBusConnection *connection,
+							const char *name,
+							const char *owner,
 							const char *path,
 							const char *interface,
 							const char *member,
@@ -82,24 +95,39 @@ static struct filter_data *filter_data_find(DBusConnection *connection,
 		if (connection != data->connection)
 			continue;
 
-		if (sender && data->sender &&
-				g_str_equal(sender, data->sender) == FALSE)
+		if (g_strcmp0(name, data->name) != 0)
 			continue;
 
-		if (path && data->path &&
-				g_str_equal(path, data->path) == FALSE)
+		if (g_strcmp0(owner, data->owner) != 0)
 			continue;
 
-		if (interface && data->interface &&
-				g_str_equal(interface, data->interface) == FALSE)
+		if (g_strcmp0(path, data->path) != 0)
 			continue;
 
-		if (member && data->member &&
-				g_str_equal(member, data->member) == FALSE)
+		if (g_strcmp0(interface, data->interface) != 0)
 			continue;
 
-		if (argument && data->argument &&
-				g_str_equal(argument, data->argument) == FALSE)
+		if (g_strcmp0(member, data->member) != 0)
+			continue;
+
+		if (g_strcmp0(argument, data->argument) != 0)
+			continue;
+
+		return data;
+	}
+
+	return NULL;
+}
+
+static struct filter_data *filter_data_find(DBusConnection *connection)
+{
+	GSList *current;
+
+	for (current = listeners;
+			current != NULL; current = current->next) {
+		struct filter_data *data = current->data;
+
+		if (connection != data->connection)
 			continue;
 
 		return data;
@@ -108,15 +136,62 @@ static struct filter_data *filter_data_find(DBusConnection *connection,
 	return NULL;
 }
 
+#if defined TIZEN_EXT
+#define SENDER_PREFIX ",sender='%s'"
+#define PATH_PREFIX ",path='%s'"
+#define IFACE_PREFIX ",interface='%s'"
+#define MEMBER_PREFIX ",member='%s'"
+#define ARG0_PREFIX ",arg0='%s'"
+
+static gboolean check_rule_length(int remains, const char *prefix, const char *data)
+{
+	if (!prefix || !data)
+		return FALSE;
+
+	return strlen(prefix) - 2 + strlen(data) < remains;
+}
+
+static void format_rule(struct filter_data *data, char *rule, size_t size)
+{
+	const char *sender;
+	int offset;
+
+	offset = snprintf(rule, size, "type='signal'");
+	sender = data->name ? : data->owner;
+
+	if (sender &&
+			check_rule_length(size - offset, SENDER_PREFIX, sender))
+		offset += snprintf(rule + offset, size - offset,
+				SENDER_PREFIX, sender);
+	if (data->path &&
+			check_rule_length(size - offset, PATH_PREFIX, data->path))
+		offset += snprintf(rule + offset, size - offset,
+				PATH_PREFIX, data->path);
+	if (data->interface &&
+			check_rule_length(size - offset, IFACE_PREFIX, data->interface))
+		offset += snprintf(rule + offset, size - offset,
+				IFACE_PREFIX, data->interface);
+	if (data->member &&
+			check_rule_length(size - offset, MEMBER_PREFIX, data->member))
+		offset += snprintf(rule + offset, size - offset,
+				MEMBER_PREFIX, data->member);
+	if (data->argument &&
+			check_rule_length(size - offset, ARG0_PREFIX, data->argument))
+		snprintf(rule + offset, size - offset,
+				ARG0_PREFIX, data->argument);
+}
+#else
 static void format_rule(struct filter_data *data, char *rule, size_t size)
 {
+	const char *sender;
 	int offset;
 
 	offset = snprintf(rule, size, "type='signal'");
+	sender = data->name ? : data->owner;
 
-	if (data->sender)
+	if (sender)
 		offset += snprintf(rule + offset, size - offset,
-				",sender='%s'", data->sender);
+				",sender='%s'", sender);
 	if (data->path)
 		offset += snprintf(rule + offset, size - offset,
 				",path='%s'", data->path);
@@ -130,6 +205,7 @@ static void format_rule(struct filter_data *data, char *rule, size_t size)
 		snprintf(rule + offset, size - offset,
 				",arg0='%s'", data->argument);
 }
+#endif
 
 static gboolean add_match(struct filter_data *data,
 				DBusHandleMessageFunction filter)
@@ -174,6 +250,30 @@ static gboolean remove_match(struct filter_data *data)
 	return TRUE;
 }
 
+static void filter_data_free(struct filter_data *data)
+{
+	GSList *l;
+
+	/* Remove filter if there are no listeners left for the connection */
+	if (filter_data_find(data->connection) == NULL)
+		dbus_connection_remove_filter(data->connection, message_filter,
+									NULL);
+
+	for (l = data->callbacks; l != NULL; l = l->next)
+		g_free(l->data);
+
+	g_slist_free(data->callbacks);
+	g_dbus_remove_watch(data->connection, data->name_watch);
+	g_free(data->name);
+	g_free(data->owner);
+	g_free(data->path);
+	g_free(data->interface);
+	g_free(data->member);
+	g_free(data->argument);
+	dbus_connection_unref(data->connection);
+	g_free(data);
+}
+
 static struct filter_data *filter_data_get(DBusConnection *connection,
 					DBusHandleMessageFunction filter,
 					const char *sender,
@@ -183,8 +283,9 @@ static struct filter_data *filter_data_get(DBusConnection *connection,
 					const char *argument)
 {
 	struct filter_data *data;
+	const char *name = NULL, *owner = NULL;
 
-	if (!filter_data_find(connection, NULL, NULL, NULL, NULL, NULL)) {
+	if (filter_data_find(connection) == NULL) {
 		if (!dbus_connection_add_filter(connection,
 					message_filter, NULL, NULL)) {
 			error("dbus_connection_add_filter() failed");
@@ -192,22 +293,32 @@ static struct filter_data *filter_data_get(DBusConnection *connection,
 		}
 	}
 
-	data = filter_data_find(connection, sender, path, interface, member,
-					argument);
+	if (sender == NULL)
+		goto proceed;
+
+	if (sender[0] == ':')
+		owner = sender;
+	else
+		name = sender;
+
+proceed:
+	data = filter_data_find_match(connection, name, owner, path,
+						interface, member, argument);
 	if (data)
 		return data;
 
 	data = g_new0(struct filter_data, 1);
 
 	data->connection = dbus_connection_ref(connection);
-	data->sender = g_strdup(sender);
+	data->name = g_strdup(name);
+	data->owner = g_strdup(owner);
 	data->path = g_strdup(path);
 	data->interface = g_strdup(interface);
 	data->member = g_strdup(member);
 	data->argument = g_strdup(argument);
 
 	if (!add_match(data, filter)) {
-		g_free(data);
+		filter_data_free(data);
 		return NULL;
 	}
 
@@ -236,23 +347,6 @@ static struct filter_callback *filter_data_find_callback(
 	return NULL;
 }
 
-static void filter_data_free(struct filter_data *data)
-{
-	GSList *l;
-
-	for (l = data->callbacks; l != NULL; l = l->next)
-		g_free(l->data);
-
-	g_slist_free(data->callbacks);
-	g_free(data->sender);
-	g_free(data->path);
-	g_free(data->interface);
-	g_free(data->member);
-	g_free(data->argument);
-	dbus_connection_unref(data->connection);
-	g_free(data);
-}
-
 static void filter_data_call_and_free(struct filter_data *data)
 {
 	GSList *l;
@@ -279,7 +373,7 @@ static struct filter_callback *filter_data_add_callback(
 {
 	struct filter_callback *cb = NULL;
 
-	cb = g_new(struct filter_callback, 1);
+	cb = g_new0(struct filter_callback, 1);
 
 	cb->conn_func = connect;
 	cb->disc_func = disconnect;
@@ -296,12 +390,38 @@ static struct filter_callback *filter_data_add_callback(
 	return cb;
 }
 
+static void service_data_free(struct service_data *data)
+{
+	struct filter_callback *callback = data->callback;
+
+	dbus_connection_unref(data->conn);
+
+	if (data->call)
+		dbus_pending_call_unref(data->call);
+
+	if (data->id)
+		g_source_remove(data->id);
+
+	g_free(data->name);
+	g_free(data);
+
+	callback->data = NULL;
+}
+
+/* Returns TRUE if data is freed */
 static gboolean filter_data_remove_callback(struct filter_data *data,
 						struct filter_callback *cb)
 {
 	data->callbacks = g_slist_remove(data->callbacks, cb);
 	data->processed = g_slist_remove(data->processed, cb);
 
+	/* Cancel pending operations */
+	if (cb->data) {
+		if (cb->data->call)
+			dbus_pending_call_cancel(cb->data->call);
+		service_data_free(cb->data);
+	}
+
 	if (cb->destroy_func)
 		cb->destroy_func(cb->user_data);
 
@@ -310,18 +430,11 @@ static gboolean filter_data_remove_callback(struct filter_data *data,
 	/* Don't remove the filter if other callbacks exist or data is lock
 	 * processing callbacks */
 	if (data->callbacks || data->lock)
-		return TRUE;
+		return FALSE;
 
 	if (data->registered && !remove_match(data))
 		return FALSE;
 
-	/* Remove filter if there are no listeners left for the connection */
-	data = filter_data_find(data->connection, NULL, NULL, NULL, NULL,
-					NULL);
-	if (!data)
-		dbus_connection_remove_filter(data->connection, message_filter,
-						NULL);
-
 	listeners = g_slist_remove(listeners, data);
 	filter_data_free(data);
 
@@ -339,7 +452,9 @@ static DBusHandlerResult signal_filter(DBusConnection *connection,
 
 		if (cb->signal_func && !cb->signal_func(connection, message,
 							cb->user_data)) {
-			filter_data_remove_callback(data, cb);
+			if (filter_data_remove_callback(data, cb))
+				break;
+
 			continue;
 		}
 
@@ -355,6 +470,37 @@ static DBusHandlerResult signal_filter(DBusConnection *connection,
 	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 }
 
+static void update_name_cache(const char *name, const char *owner)
+{
+	GSList *l;
+
+	for (l = listeners; l != NULL; l = l->next) {
+		struct filter_data *data = l->data;
+
+		if (g_strcmp0(data->name, name) != 0)
+			continue;
+
+		g_free(data->owner);
+		data->owner = g_strdup(owner);
+	}
+}
+
+static const char *check_name_cache(const char *name)
+{
+	GSList *l;
+
+	for (l = listeners; l != NULL; l = l->next) {
+		struct filter_data *data = l->data;
+
+		if (g_strcmp0(data->name, name) != 0)
+			continue;
+
+		return data->owner;
+	}
+
+	return NULL;
+}
+
 static DBusHandlerResult service_filter(DBusConnection *connection,
 					DBusMessage *message, void *user_data)
 {
@@ -371,6 +517,8 @@ static DBusHandlerResult service_filter(DBusConnection *connection,
 		return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 	}
 
+	update_name_cache(name, new);
+
 	while (data->callbacks) {
 		cb = data->callbacks->data;
 
@@ -387,13 +535,16 @@ static DBusHandlerResult service_filter(DBusConnection *connection,
 		if (!g_slist_find(data->callbacks, cb))
 			continue;
 
-		data->callbacks = g_slist_remove(data->callbacks, cb);
+		/* Only auto remove if it is a bus name watch */
+		if (data->argument[0] == ':' &&
+				(cb->conn_func == NULL || cb->disc_func == NULL)) {
+			if (filter_data_remove_callback(data, cb))
+				break;
 
-		if (!cb->conn_func || !cb->disc_func) {
-			g_free(cb);
 			continue;
 		}
 
+		data->callbacks = g_slist_remove(data->callbacks, cb);
 		data->processed = g_slist_append(data->processed, cb);
 	}
 
@@ -406,6 +557,7 @@ static DBusHandlerResult message_filter(DBusConnection *connection,
 {
 	struct filter_data *data;
 	const char *sender, *path, *iface, *member, *arg = NULL;
+	GSList *current, *delete_listener = NULL;
 
 	/* Only filter signals */
 	if (dbus_message_get_type(message) != DBUS_MESSAGE_TYPE_SIGNAL)
@@ -417,82 +569,127 @@ static DBusHandlerResult message_filter(DBusConnection *connection,
 	member = dbus_message_get_member(message);
 	dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &arg, DBUS_TYPE_INVALID);
 
-	data = filter_data_find(connection, sender, path, iface, member, arg);
-	if (!data) {
-		error("Got %s.%s signal which has no listeners", iface, member);
-		return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
-	}
+	/* If sender != NULL it is always the owner */
+
+	for (current = listeners; current != NULL; current = current->next) {
+		data = current->data;
+
+		if (connection != data->connection)
+			continue;
+
+		if (!sender && data->owner)
+			continue;
+
+		if (data->owner && g_str_equal(sender, data->owner) == FALSE)
+			continue;
+
+		if (data->path && g_str_equal(path, data->path) == FALSE)
+			continue;
+
+		if (data->interface && g_str_equal(iface,
+						data->interface) == FALSE)
+			continue;
+
+		if (data->member && g_str_equal(member, data->member) == FALSE)
+			continue;
+
+		if (data->argument && g_str_equal(arg,
+						data->argument) == FALSE)
+			continue;
+
+		if (data->handle_func) {
+			data->lock = TRUE;
 
-	if (data->handle_func) {
-		data->lock = TRUE;
+			data->handle_func(connection, message, data);
 
-		data->handle_func(connection, message, data);
+			data->callbacks = data->processed;
+			data->processed = NULL;
+			data->lock = FALSE;
+		}
 
-		data->callbacks = data->processed;
-		data->processed = NULL;
-		data->lock = FALSE;
+		if (!data->callbacks)
+			delete_listener = g_slist_prepend(delete_listener,
+								current);
 	}
 
-	if (data->callbacks)
+	if (delete_listener == NULL)
 		return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 
-	remove_match(data);
+	for (current = delete_listener; current != NULL;
+					current = delete_listener->next) {
+		GSList *l = current->data;
 
-	listeners = g_slist_remove(listeners, data);
-	filter_data_free(data);
+		data = l->data;
 
-	/* Remove filter if there no listener left for the connection */
-	data = filter_data_find(connection, NULL, NULL, NULL, NULL, NULL);
-	if (!data)
-		dbus_connection_remove_filter(connection, message_filter,
-						NULL);
+		/* Has any other callback added callbacks back to this data? */
+		if (data->callbacks != NULL)
+			continue;
+
+		remove_match(data);
+		listeners = g_slist_delete_link(listeners, l);
+
+		filter_data_free(data);
+	}
+
+	g_slist_free(delete_listener);
 
 	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 }
 
-struct service_data {
+static gboolean update_service(void *user_data)
+{
+	struct service_data *data = user_data;
+	struct filter_callback *cb = data->callback;
 	DBusConnection *conn;
-	GDBusWatchFunction conn_func;
-	void *user_data;
-};
+
+	conn = dbus_connection_ref(data->conn);
+	service_data_free(data);
+
+	if (cb->conn_func)
+		cb->conn_func(conn, cb->user_data);
+
+	dbus_connection_unref(conn);
+
+	return FALSE;
+}
 
 static void service_reply(DBusPendingCall *call, void *user_data)
 {
 	struct service_data *data = user_data;
 	DBusMessage *reply;
-	DBusError error;
-	dbus_bool_t has_owner;
+	DBusError err;
 
 	reply = dbus_pending_call_steal_reply(call);
 	if (reply == NULL)
 		return;
 
-	dbus_error_init(&error);
+	dbus_error_init(&err);
+
+	if (dbus_set_error_from_message(&err, reply))
+		goto fail;
 
-	if (dbus_message_get_args(reply, &error,
-					DBUS_TYPE_BOOLEAN, &has_owner,
-						DBUS_TYPE_INVALID) == FALSE) {
-		if (dbus_error_is_set(&error) == TRUE) {
-			error("%s", error.message);
-			dbus_error_free(&error);
-		} else {
-			error("Wrong arguments for NameHasOwner reply");
-		}
-		goto done;
-	}
+	if (dbus_message_get_args(reply, &err,
+					DBUS_TYPE_STRING, &data->owner,
+						DBUS_TYPE_INVALID) == FALSE)
+		goto fail;
+
+	update_service(data);
 
-	if (has_owner && data->conn_func)
-		data->conn_func(data->conn, data->user_data);
+	goto done;
 
+fail:
+	error("%s", err.message);
+	dbus_error_free(&err);
+	service_data_free(data);
 done:
 	dbus_message_unref(reply);
 }
 
-static void check_service(DBusConnection *connection, const char *name,
-				GDBusWatchFunction connect, void *user_data)
+static void check_service(DBusConnection *connection,
+					const char *name,
+					struct filter_callback *callback)
 {
 	DBusMessage *message;
-	DBusPendingCall *call;
 	struct service_data *data;
 
 	data = g_try_malloc0(sizeof(*data));
@@ -501,12 +698,19 @@ static void check_service(DBusConnection *connection, const char *name,
 		return;
 	}
 
-	data->conn = connection;
-	data->conn_func = connect;
-	data->user_data = user_data;
+	data->conn = dbus_connection_ref(connection);
+	data->name = g_strdup(name);
+	data->callback = callback;
+	callback->data = data;
+
+	data->owner = check_name_cache(name);
+	if (data->owner != NULL) {
+		data->id = g_idle_add(update_service, data);
+		return;
+	}
 
 	message = dbus_message_new_method_call(DBUS_SERVICE_DBUS,
-			DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS, "NameHasOwner");
+			DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS, "GetNameOwner");
 	if (message == NULL) {
 		error("Can't allocate new message");
 		g_free(data);
@@ -517,19 +721,19 @@ static void check_service(DBusConnection *connection, const char *name,
 							DBUS_TYPE_INVALID);
 
 	if (dbus_connection_send_with_reply(connection, message,
-							&call, -1) == FALSE) {
+							&data->call, -1) == FALSE) {
 		error("Failed to execute method call");
 		g_free(data);
 		goto done;
 	}
 
-	if (call == NULL) {
+	if (data->call == NULL) {
 		error("D-Bus connection not available");
 		g_free(data);
 		goto done;
 	}
 
-	dbus_pending_call_set_notify(call, service_reply, data, NULL);
+	dbus_pending_call_set_notify(data->call, service_reply, data, NULL);
 
 done:
 	dbus_message_unref(message);
@@ -543,22 +747,23 @@ guint g_dbus_add_service_watch(DBusConnection *connection, const char *name,
 	struct filter_data *data;
 	struct filter_callback *cb;
 
-	if (!name)
+	if (name == NULL)
 		return 0;
 
-	data = filter_data_get(connection, service_filter, NULL, NULL,
+	data = filter_data_get(connection, service_filter,
+				DBUS_SERVICE_DBUS, DBUS_PATH_DBUS,
 				DBUS_INTERFACE_DBUS, "NameOwnerChanged",
 				name);
-	if (!data)
+	if (data == NULL)
 		return 0;
 
-	cb = filter_data_add_callback(data, connect, disconnect, NULL, NULL,
+	cb = filter_data_add_callback(data, connect, disconnect, NULL, destroy,
 					user_data);
-	if (!cb)
+	if (cb == NULL)
 		return 0;
 
 	if (connect)
-		check_service(connection, name, connect, user_data);
+		check_service(connection, name, cb);
 
 	return cb->id;
 }
@@ -582,14 +787,47 @@ guint g_dbus_add_signal_watch(DBusConnection *connection,
 
 	data = filter_data_get(connection, signal_filter, sender, path,
 				interface, member, NULL);
-	if (!data)
+	if (data == NULL)
+		return 0;
+
+	cb = filter_data_add_callback(data, NULL, NULL, function, destroy,
+					user_data);
+	if (cb == NULL)
+		return 0;
+
+	if (data->name != NULL && data->name_watch == 0)
+		data->name_watch = g_dbus_add_service_watch(connection,
+							data->name, NULL,
+							NULL, NULL, NULL);
+
+	return cb->id;
+}
+
+guint g_dbus_add_properties_watch(DBusConnection *connection,
+				const char *sender, const char *path,
+				const char *interface,
+				GDBusSignalFunction function, void *user_data,
+				GDBusDestroyFunction destroy)
+{
+	struct filter_data *data;
+	struct filter_callback *cb;
+
+	data = filter_data_get(connection, signal_filter, sender, path,
+				DBUS_INTERFACE_PROPERTIES, "PropertiesChanged",
+				interface);
+	if (data == NULL)
 		return 0;
 
 	cb = filter_data_add_callback(data, NULL, NULL, function, destroy,
 					user_data);
-	if (!cb)
+	if (cb == NULL)
 		return 0;
 
+	if (data->name != NULL && data->name_watch == 0)
+		data->name_watch = g_dbus_add_service_watch(connection,
+							data->name, NULL,
+							NULL, NULL, NULL);
+
 	return cb->id;
 }
 
@@ -619,10 +857,8 @@ void g_dbus_remove_all_watches(DBusConnection *connection)
 {
 	struct filter_data *data;
 
-	while ((data = filter_data_find(connection, NULL, NULL, NULL, NULL, NULL))) {
+	while ((data = filter_data_find(connection))) {
 		listeners = g_slist_remove(listeners, data);
 		filter_data_call_and_free(data);
 	}
-
-	dbus_connection_remove_filter(connection, message_filter, NULL);
 }