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author | Marcel Holtmann <marcel.holtmann@intel.com> | 2009-04-26 20:51:36 +0200 |
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committer | Marcel Holtmann <marcel.holtmann@intel.com> | 2009-04-26 20:51:36 +0200 |
commit | 7851155b80c7276e301a247351522b87b3dd9373 (patch) | |
tree | f9d1b0dbbd07109b5ee7f9c04170fdb9dbf5d440 /gdbus/mainloop.c | |
parent | 798111efd4d2af5101993f10f7df76cbcfaa24bb (diff) | |
download | ofono-7851155b80c7276e301a247351522b87b3dd9373.tar.bz2 |
Add D-Bus helper library for GLib integration
Diffstat (limited to 'gdbus/mainloop.c')
-rw-r--r-- | gdbus/mainloop.c | 348 |
1 files changed, 348 insertions, 0 deletions
diff --git a/gdbus/mainloop.c b/gdbus/mainloop.c new file mode 100644 index 00000000..eaba42ea --- /dev/null +++ b/gdbus/mainloop.c @@ -0,0 +1,348 @@ +/* + * + * D-Bus helper library + * + * Copyright (C) 2004-2009 Marcel Holtmann <marcel@holtmann.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdint.h> + +#include <glib.h> +#include <dbus/dbus.h> + +#ifdef NEED_DBUS_WATCH_GET_UNIX_FD +#define dbus_watch_get_unix_fd dbus_watch_get_fd +#endif + +#include "gdbus.h" + +#define DISPATCH_TIMEOUT 0 + +#define info(fmt...) +#define error(fmt...) +#define debug(fmt...) + +typedef struct { + uint32_t id; + DBusTimeout *timeout; +} timeout_handler_t; + +struct watch_info { + guint watch_id; + GIOChannel *io; + DBusConnection *conn; +}; + +struct server_info { + guint watch_id; + GIOChannel *io; + DBusServer *server; +}; + +struct disconnect_data { + GDBusWatchFunction disconnect_cb; + void *user_data; +}; + +static DBusHandlerResult disconnect_filter(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + struct disconnect_data *dc_data = data; + + if (dbus_message_is_signal(msg, + DBUS_INTERFACE_LOCAL, "Disconnected") == TRUE) { + error("Got disconnected from the system message bus"); + dc_data->disconnect_cb(conn, dc_data->user_data); + dbus_connection_unref(conn); + } + + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; +} + +static gboolean message_dispatch_cb(void *data) +{ + DBusConnection *connection = data; + + dbus_connection_ref(connection); + + /* Dispatch messages */ + while (dbus_connection_dispatch(connection) == DBUS_DISPATCH_DATA_REMAINS); + + dbus_connection_unref(connection); + + return FALSE; +} + +static gboolean watch_func(GIOChannel *chan, GIOCondition cond, gpointer data) +{ + DBusWatch *watch = data; + struct watch_info *info = dbus_watch_get_data(watch); + int flags = 0; + + if (cond & G_IO_IN) flags |= DBUS_WATCH_READABLE; + if (cond & G_IO_OUT) flags |= DBUS_WATCH_WRITABLE; + if (cond & G_IO_HUP) flags |= DBUS_WATCH_HANGUP; + if (cond & G_IO_ERR) flags |= DBUS_WATCH_ERROR; + + dbus_watch_handle(watch, flags); + + if (dbus_connection_get_dispatch_status(info->conn) == DBUS_DISPATCH_DATA_REMAINS) + g_timeout_add(DISPATCH_TIMEOUT, message_dispatch_cb, info->conn); + + return TRUE; +} + +static dbus_bool_t add_watch(DBusWatch *watch, void *data) +{ + GIOCondition cond = G_IO_HUP | G_IO_ERR; + DBusConnection *conn = data; + struct watch_info *info; + int fd, flags; + + if (!dbus_watch_get_enabled(watch)) + return TRUE; + + info = g_new(struct watch_info, 1); + + fd = dbus_watch_get_unix_fd(watch); + info->io = g_io_channel_unix_new(fd); + info->conn = dbus_connection_ref(conn); + + dbus_watch_set_data(watch, info, NULL); + + flags = dbus_watch_get_flags(watch); + + if (flags & DBUS_WATCH_READABLE) cond |= G_IO_IN; + if (flags & DBUS_WATCH_WRITABLE) cond |= G_IO_OUT; + + info->watch_id = g_io_add_watch(info->io, cond, watch_func, watch); + + return TRUE; +} + +static void remove_watch(DBusWatch *watch, void *data) +{ + struct watch_info *info = dbus_watch_get_data(watch); + + dbus_watch_set_data(watch, NULL, NULL); + + if (info) { + g_source_remove(info->watch_id); + g_io_channel_unref(info->io); + dbus_connection_unref(info->conn); + g_free(info); + } +} + +static void watch_toggled(DBusWatch *watch, void *data) +{ + /* Because we just exit on OOM, enable/disable is + * no different from add/remove */ + if (dbus_watch_get_enabled(watch)) + add_watch(watch, data); + else + remove_watch(watch, data); +} + +static gboolean timeout_handler_dispatch(gpointer data) +{ + timeout_handler_t *handler = data; + + /* if not enabled should not be polled by the main loop */ + if (dbus_timeout_get_enabled(handler->timeout) != TRUE) + return FALSE; + + dbus_timeout_handle(handler->timeout); + + return FALSE; +} + +static void timeout_handler_free(void *data) +{ + timeout_handler_t *handler = data; + if (!handler) + return; + + g_source_remove(handler->id); + g_free(handler); +} + +static dbus_bool_t add_timeout(DBusTimeout *timeout, void *data) +{ + timeout_handler_t *handler; + + if (!dbus_timeout_get_enabled(timeout)) + return TRUE; + + handler = g_new0(timeout_handler_t, 1); + + handler->timeout = timeout; + handler->id = g_timeout_add(dbus_timeout_get_interval(timeout), + timeout_handler_dispatch, handler); + + dbus_timeout_set_data(timeout, handler, timeout_handler_free); + + return TRUE; +} + +static void remove_timeout(DBusTimeout *timeout, void *data) +{ +} + +static void timeout_toggled(DBusTimeout *timeout, void *data) +{ + if (dbus_timeout_get_enabled(timeout)) + add_timeout(timeout, data); + else + remove_timeout(timeout, data); +} + +static void dispatch_status_cb(DBusConnection *conn, + DBusDispatchStatus new_status, void *data) +{ + if (!dbus_connection_get_is_connected(conn)) + return; + + if (new_status == DBUS_DISPATCH_DATA_REMAINS) + g_timeout_add(DISPATCH_TIMEOUT, message_dispatch_cb, data); +} + +static void setup_dbus_with_main_loop(DBusConnection *conn) +{ + dbus_connection_set_watch_functions(conn, add_watch, remove_watch, + watch_toggled, conn, NULL); + + dbus_connection_set_timeout_functions(conn, add_timeout, remove_timeout, + timeout_toggled, conn, NULL); + + dbus_connection_set_dispatch_status_function(conn, dispatch_status_cb, + conn, NULL); +} + +DBusConnection *g_dbus_setup_bus(DBusBusType type, const char *name, + DBusError *error) +{ + DBusConnection *conn; + + conn = dbus_bus_get(type, error); + + if (error != NULL) { + if (dbus_error_is_set(error) == TRUE) + return NULL; + } + + if (conn == NULL) + return NULL; + + if (name != NULL) { + if (dbus_bus_request_name(conn, name, + DBUS_NAME_FLAG_DO_NOT_QUEUE, error) != + DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER ) { + dbus_connection_unref(conn); + return NULL; + } + + if (error != NULL) { + if (dbus_error_is_set(error) == TRUE) { + dbus_connection_unref(conn); + return NULL; + } + } + } + + setup_dbus_with_main_loop(conn); + + return conn; +} + +gboolean g_dbus_request_name(DBusConnection *connection, const char *name, + DBusError *error) +{ + return TRUE; +} + +gboolean g_dbus_check_service(DBusConnection *connection, const char *name) +{ + DBusMessage *message, *reply; + const char **names; + int i, count; + gboolean result = FALSE; + + message = dbus_message_new_method_call(DBUS_SERVICE_DBUS, + DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS, "ListNames"); + if (message == NULL) { + error("Can't allocate new message"); + return FALSE; + } + + reply = dbus_connection_send_with_reply_and_block(connection, + message, -1, NULL); + + dbus_message_unref(message); + + if (reply == NULL) { + error("Failed to execute method call"); + return FALSE; + } + + if (dbus_message_get_args(reply, NULL, + DBUS_TYPE_ARRAY, DBUS_TYPE_STRING, + &names, &count, DBUS_TYPE_INVALID) == FALSE) { + error("Failed to read name list"); + goto done; + } + + for (i = 0; i < count; i++) + if (g_str_equal(names[i], name) == TRUE) { + result = TRUE; + break; + } + +done: + dbus_message_unref(reply); + + return result; +} + +gboolean g_dbus_set_disconnect_function(DBusConnection *connection, + GDBusWatchFunction function, + void *user_data, DBusFreeFunction destroy) +{ + struct disconnect_data *dc_data; + + dc_data = g_new(struct disconnect_data, 1); + + dc_data->disconnect_cb = function; + dc_data->user_data = user_data; + + dbus_connection_set_exit_on_disconnect(connection, FALSE); + + if (dbus_connection_add_filter(connection, disconnect_filter, + dc_data, g_free) == FALSE) { + error("Can't add D-Bus disconnect filter"); + g_free(dc_data); + return FALSE; + } + + return TRUE; +} |