149 lines
3.5 KiB
C
149 lines
3.5 KiB
C
/*
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* dbus.c - awesome dbus support
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*
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* Copyright © 2008 Julien Danjou <julien@danjou.info>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <dbus/dbus.h>
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#include "dbus.h"
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#include "common/util.h"
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static DBusError err;
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static DBusConnection *dbus_connection = NULL;
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static void
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a_dbus_process_widget_tell(DBusMessage *req)
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{
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char *arg, *path = NULL;
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DBusMessageIter iter;
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if(!dbus_message_iter_init(req, &iter))
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{
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warn("message has no argument: %s\n", err.message);
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dbus_error_free(&err);
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return;
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}
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else if(DBUS_TYPE_STRING != dbus_message_iter_get_arg_type(&iter))
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{
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warn("argument must be a string");
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dbus_error_free(&err);
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return;
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}
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else
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dbus_message_iter_get_basic(&iter, &arg);
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p_delete(&path);
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}
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void
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a_dbus_process_requests(int *fd)
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{
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DBusMessage *msg;
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int nmsg = 0;
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if(!dbus_connection && !a_dbus_init(fd))
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return;
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while(true)
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{
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dbus_connection_read_write(dbus_connection, 0);
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if(!(msg = dbus_connection_pop_message(dbus_connection)))
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break;
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if(dbus_message_is_method_call(msg, "org.awesome.statusbar.widget", "tell"))
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a_dbus_process_widget_tell(msg);
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else if(dbus_message_is_signal(msg, DBUS_INTERFACE_LOCAL, "Disconnected"))
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{
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a_dbus_cleanup();
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dbus_message_unref(msg);
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return;
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}
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dbus_message_unref(msg);
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nmsg++;
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}
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if(nmsg)
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dbus_connection_flush(dbus_connection);
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}
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bool
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a_dbus_init(int *fd)
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{
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bool ret;
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dbus_error_init(&err);
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dbus_connection = dbus_bus_get(DBUS_BUS_SESSION, &err);
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if(dbus_error_is_set(&err))
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{
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warn("DBus system bus connection failed: %s\n", err.message);
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dbus_connection = NULL;
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dbus_error_free(&err);
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return false;
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}
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dbus_connection_set_exit_on_disconnect(dbus_connection, FALSE);
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ret = dbus_bus_request_name(dbus_connection, "org.awesome", 0, &err);
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if(dbus_error_is_set(&err))
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{
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warn("failed to request DBus name: %s\n", err.message);
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a_dbus_cleanup();
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return false;
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}
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if(ret != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER)
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{
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warn("not primary DBus name owner\n");
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a_dbus_cleanup();
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return false;
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}
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if(!dbus_connection_get_unix_fd(dbus_connection, fd))
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{
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warn("cannot get DBus connection file descriptor\n");
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a_dbus_cleanup();
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return false;
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}
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return true;
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}
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void
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a_dbus_cleanup(void)
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{
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if(!dbus_connection)
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return;
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dbus_error_free(&err);
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/* This is a shared connection owned by libdbus
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* Do not close it, only unref
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*/
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dbus_connection_unref(dbus_connection);
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dbus_connection = NULL;
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}
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// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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