registryd/registry-main.c

   1 /*
   2  * AT-SPI - Assistive Technology Service Provider Interface
   3  * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
   4  *
   5  * Copyright 2001, 2002 Sun Microsystems Inc.,
   6  * Copyright 2001, 2002 Ximian, Inc.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Library General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Library General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Library General Public
  19  * License along with this library; if not, write to the
  20  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  21  * Boston, MA 02111-1307, USA.
  22  */
  23
  24 #include <stdlib.h>
  25 #include <config.h>
  26 #include <string.h>
  27 #include <glib.h>
  28 #include <gio/gio.h>
  29 #include <stdio.h>
  30 #include <dlfcn.h>
  31
  32 #include <dbus/dbus.h>
  33
  34 #include "paths.h"
  35 #include "registry.h"
  36 #include "deviceeventcontroller.h"
  37 #include "atspi/atspi.h"
  38
  39 static GMainLoop *mainloop;
  40 static gchar *dbus_name = NULL;
  41 static gboolean use_gnome_session = FALSE;
  42
  43 static GOptionEntry optentries[] =
  44 {
  45   {"dbus-name", 0, 0, G_OPTION_ARG_STRING, &dbus_name, "Well-known name to register with D-Bus", NULL},
  46   {"use-gnome-session", 0, 0, G_OPTION_ARG_NONE, &use_gnome_session, "Should register with gnome session manager", NULL},
  47   {NULL}
  48 };
  49
  50 static GDBusConnection *bus_connection = NULL;
  51 static GDBusProxy      *sm_proxy = NULL;
  52 static char            *client_id = NULL;
  53 static GDBusProxy      *client_proxy = NULL;
  54
  55 #define SM_DBUS_NAME      "org.gnome.SessionManager"
  56 #define SM_DBUS_PATH      "/org/gnome/SessionManager"
  57 #define SM_DBUS_INTERFACE "org.gnome.SessionManager"
  58
  59 #define SM_CLIENT_DBUS_INTERFACE "org.gnome.SessionManager.ClientPrivate"
  60
  61 static void registry_session_init (const char *previous_client_id, const char *exe);
  62
  63 static void
  64 on_session_over (GDBusProxy *proxy,
  65                  gchar      *sender_name,
  66                  gchar      *signal_name,
  67                  GVariant   *parameters,
  68                  gpointer    user_data)
  69 {
  70         if (g_strcmp0 (signal_name, "SessionOver") == 0) {
  71                 g_main_loop_quit (mainloop);
  72         }
  73 }
  74
  75 static gboolean
  76 session_manager_connect (void)
  77 {
  78
  79         sm_proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION, 0, NULL,
  80                                               SM_DBUS_NAME,
  81                                               SM_DBUS_PATH,
  82                                               SM_DBUS_INTERFACE, NULL, NULL);
  83
  84         g_signal_connect (G_OBJECT (sm_proxy), "g-signal",
  85                           G_CALLBACK (on_session_over), NULL);
  86
  87         return (sm_proxy != NULL);
  88 }
  89
  90 static void
  91 stop_cb (gpointer data)
  92 {
  93         g_main_loop_quit (mainloop);
  94 }
  95
  96 static gboolean
  97 end_session_response (gboolean is_okay, const gchar *reason)
  98 {
  99   GVariant *ret;
 100         GError *error = NULL;
 101
 102         if (!reason)
 103                 reason = "";
 104
 105         ret = g_dbus_proxy_call_sync (client_proxy, "EndSessionResponse",
 106                                       g_variant_new ("(bs)", is_okay, reason),
 107                                       0, 1000, NULL, &error);
 108
 109         if (!ret) {
 110                 g_warning ("Failed to send session response %s", error->message);
 111                 g_error_free (error);
 112                 return FALSE;
 113         }
 114         else
 115                 g_variant_unref (ret);
 116
 117         return TRUE;
 118 }
 119
 120 static void
 121 client_proxy_signal_cb (GDBusProxy *proxy,
 122                         gchar *sender_name,
 123                         gchar *signal_name,
 124                         GVariant *parameters,
 125                         gpointer user_data)
 126 {
 127         if (g_strcmp0 (signal_name, "QueryEndSession") == 0) {
 128                 g_debug ("Got QueryEndSession signal");
 129                 end_session_response (TRUE, NULL);
 130         } else if (g_strcmp0 (signal_name, "EndSession") == 0) {
 131                 g_debug ("Got EndSession signal");
 132                 end_session_response (TRUE, NULL);
 133                 g_main_loop_quit (mainloop);
 134         } else if (g_strcmp0 (signal_name, "Stop") == 0) {
 135                 g_debug ("Got Stop signal");
 136                 g_main_loop_quit (mainloop);
 137         }
 138 }
 139
 140 static gboolean
 141 register_client (void)
 142 {
 143         GError     *error;
 144   GVariant *res;
 145         const char *startup_id;
 146         const char *app_id;
 147
 148         startup_id = g_getenv ("DESKTOP_AUTOSTART_ID");
 149         if (!startup_id)
 150                 startup_id = "";
 151         app_id = "at-spi-registryd.desktop";
 152
 153         error = NULL;
 154         res = g_dbus_proxy_call_sync (sm_proxy,
 155                                  "RegisterClient",
 156                                       g_variant_new ("(ss)", app_id,
 157                                                      startup_id),
 158                                       0, 1000, NULL, &error);
 159         if (! res) {
 160                 g_warning ("Failed to register client: %s", error->message);
 161                 g_error_free (error);
 162                 return FALSE;
 163         }
 164         g_variant_get (res, "(o)", &client_id);
 165         g_variant_unref (res);
 166
 167         client_proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION, 0, NULL,
 168                                                   SM_DBUS_NAME,
 169                                                   client_id,
 170                                                   SM_CLIENT_DBUS_INTERFACE,
 171                                                   NULL, NULL);
 172
 173         g_signal_connect (client_proxy, "g-signal",
 174                           G_CALLBACK (client_proxy_signal_cb), NULL);
 175
 176         g_unsetenv ("DESKTOP_AUTOSTART_ID");
 177
 178         return TRUE;
 179 }
 180
 181 /*---------------------------------------------------------------------------*/
 182
 183
 184 /*---------------------------------------------------------------------------*/
 185
 186 typedef GObject *(*gconf_client_get_default_t) ();
 187 typedef gboolean (*gconf_client_get_bool_t)(GObject *, const char *, void *);
 188
 189 int
 190 main (int argc, char **argv)
 191 {
 192   SpiRegistry *registry;
 193   SpiDEController *dec;
 194
 195   DBusConnection *bus = NULL;
 196
 197   GOptionContext *opt;
 198
 199   GError *err = NULL;
 200   int ret;
 201
 202   g_type_init();
 203
 204   /*Parse command options*/
 205   opt = g_option_context_new(NULL);
 206   g_option_context_add_main_entries(opt, optentries, NULL);
 207
 208   if (!g_option_context_parse(opt, &argc, &argv, &err))
 209     {
 210       g_error("Option parsing failed: %s\n", err->message);
 211       g_clear_error (&err);
 212     }
 213
 214   if (dbus_name == NULL)
 215       dbus_name = SPI_DBUS_NAME_REGISTRY;
 216
 217   bus = atspi_get_a11y_bus ();
 218   if (!bus)
 219   {
 220     return 0;
 221   }
 222
 223   mainloop = g_main_loop_new (NULL, FALSE);
 224   atspi_dbus_connection_setup_with_g_main(bus, NULL);
 225
 226   ret = dbus_bus_request_name(bus, dbus_name, DBUS_NAME_FLAG_DO_NOT_QUEUE, NULL);
 227   if (ret == DBUS_REQUEST_NAME_REPLY_EXISTS)
 228     {
 229       exit (0); /* most likely already running */
 230     }
 231   else
 232     {
 233       g_print ("SpiRegistry daemon is running with well-known name - %s\n", dbus_name);
 234     }
 235
 236   registry = spi_registry_new (bus);
 237   dec = spi_registry_dec_new (registry, bus);
 238
 239   if (use_gnome_session)
 240     {
 241       if (!session_manager_connect ())
 242           g_warning ("Unable to connect to session manager");
 243
 244       if (!register_client ())
 245           g_warning ("Unable to register client with session manager");
 246     }
 247
 248   g_main_loop_run (mainloop);
 249
 250   dbus_connection_close (bus);
 251   dbus_connection_unref (bus);
 252   g_object_unref (dec);
 253   g_object_unref (registry);
 254
 255   return 0;
 256 }