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/*
* Run until a bus name appears. This can be used as a service-activation
* helper for a bus name that is not directly activatable, but will be provided
* automatically (after a while) by the desktop session.
*
* Usage, in
* $XDG_DATA_DIRS/dbus-1/services/....Client.Something.service:
*
* [D-BUS Service]
* Name=....Client.Something
* Exec=/usr/lib/telepathy/mc-wait-for-name ....Client.Something
*
* Alternatively, it can be used to activate something via an alternative
* name, e.g. in
* $XDG_DATA_DIRS/dbus-1/services/....AccountManager.service:
*
* [D-BUS Service]
* Name=....AccountManager
* Exec=/usr/lib/telepathy/mc-wait-for-name --activate ....MissionControl5 ....AccountManager
*
* Copyright (C) 2009 Nokia Corporation
* Copyright (C) 2009, 2012 Collabora Ltd.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include "config.h"
#ifdef HAVE_SYSEXITS_H
# include <sysexits.h>
#else
# define EX_USAGE 64
# define EX_UNAVAILABLE 69
# define EX_SOFTWARE 70
# define EX_TEMPFAIL 75
#endif
#include <glib.h>
#include <locale.h>
#include <telepathy-glib/telepathy-glib.h>
#include <telepathy-glib/telepathy-glib-dbus.h>
static int exit_status = EX_SOFTWARE;
static guint timeout_id = 0;
static guint idle_id = 0;
static gboolean
quit_because_found (gpointer data)
{
idle_id = 0;
g_main_loop_quit (data);
g_main_loop_unref (data);
exit_status = 0;
return FALSE;
}
static gboolean
quit_because_timeout (gpointer data)
{
timeout_id = 0;
g_main_loop_quit (data);
g_main_loop_unref (data);
exit_status = EX_TEMPFAIL;
return FALSE;
}
static void
noc_cb (TpDBusDaemon *bus_daemon,
const gchar *name,
const gchar *new_owner,
gpointer data)
{
if (new_owner[0] == '\0')
{
g_debug ("Waiting for %s", name);
}
else
{
g_debug ("%s now owned by %s", name, new_owner);
if (idle_id == 0)
idle_id = g_idle_add (quit_because_found, g_main_loop_ref (data));
}
}
static void
start_service_cb (TpDBusDaemon *bus_daemon,
guint ret,
const GError *error,
gpointer user_data,
GObject *weak_object)
{
GMainLoop *loop = user_data;
if (error != NULL)
{
g_message ("%s", error->message);
g_main_loop_quit (loop);
exit_status = EX_TEMPFAIL;
}
else
{
switch (ret)
{
case 1: /* DBUS_START_REPLY_SUCCESS */
g_debug ("activated name successfully started");
break;
case 2: /* DBUS_START_REPLY_ALREADY_RUNNING */
g_debug ("activated name already running");
break;
default:
g_message ("ignoring unknown result from StartServiceByName: %u", ret);
break;
}
}
}
#define WFN_TIMEOUT (5 * 60) /* 5 minutes */
static gchar *activate = NULL;
static GOptionEntry entries[] = {
{ "activate", 0, 0, G_OPTION_ARG_STRING, &activate, "Activate NAME before waiting for the other name", "NAME" },
{ NULL }
};
int
main (int argc,
char **argv)
{
TpDBusDaemon *bus_daemon;
GMainLoop *loop;
GError *error = NULL;
GOptionContext *context;
setlocale (LC_ALL, "");
g_set_prgname ("mc-wait-for-name");
context = g_option_context_new ("- wait for a bus name");
g_option_context_add_main_entries (context, entries, NULL);
if (!g_option_context_parse (context, &argc, &argv, &error))
{
g_message ("%s", error->message);
g_error_free (error);
return EX_USAGE;
}
if (activate != NULL &&
!tp_dbus_check_valid_bus_name (activate, TP_DBUS_NAME_TYPE_WELL_KNOWN,
NULL))
{
g_message ("Not a valid bus name: %s", activate);
return EX_USAGE;
}
if (argc != 2 ||
!tp_dbus_check_valid_bus_name (argv[1], TP_DBUS_NAME_TYPE_WELL_KNOWN,
NULL))
{
g_message ("Usage: mc-wait-for-name [OPTIONS] com.example.SomeBusName");
return EX_USAGE;
}
g_type_init ();
bus_daemon = tp_dbus_daemon_dup (&error);
if (bus_daemon == NULL)
{
g_message ("%s", error->message);
g_error_free (error);
return EX_UNAVAILABLE;
}
loop = g_main_loop_new (NULL, FALSE);
if (activate != NULL)
{
tp_cli_dbus_daemon_call_start_service_by_name (bus_daemon, -1,
activate, 0 /* no flags */, start_service_cb, g_main_loop_ref (loop),
(GDestroyNotify) g_main_loop_unref, NULL);
}
tp_dbus_daemon_watch_name_owner (bus_daemon, argv[1],
noc_cb, g_main_loop_ref (loop), (GDestroyNotify) g_main_loop_unref);
g_timeout_add_seconds (WFN_TIMEOUT, quit_because_timeout,
g_main_loop_ref (loop));
g_main_loop_run (loop);
if (timeout_id != 0)
{
g_source_remove (timeout_id);
g_main_loop_unref (loop);
}
if (idle_id != 0)
{
g_source_remove (idle_id);
g_main_loop_unref (loop);
}
g_main_loop_unref (loop);
g_object_unref (bus_daemon);
return exit_status;
}
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