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 GDBusProxy      *sm_proxy = NULL;
  51 static char            *client_id = NULL;
  52 static GDBusProxy      *client_proxy = NULL;
  53
  54 #define SM_DBUS_NAME      "org.gnome.SessionManager"
  55 #define SM_DBUS_PATH      "/org/gnome/SessionManager"
  56 #define SM_DBUS_INTERFACE "org.gnome.SessionManager"
  57
  58 #define SM_CLIENT_DBUS_INTERFACE "org.gnome.SessionManager.ClientPrivate"
  59
  60 static gboolean register_client (void);
  61
  62 static void
  63 on_session_signal (GDBusProxy *proxy,
  64                    gchar      *sender_name,
  65                    gchar      *signal_name,
  66                    GVariant   *parameters,
  67                    gpointer    user_data)
  68 {
  69         if (g_strcmp0 (signal_name, "SessionOver") == 0) {
  70                 g_main_loop_quit (mainloop);
  71         } else if (g_strcmp0 (signal_name, "SessionRunning") == 0) {
  72                 if (!register_client ())
  73                         g_warning ("Unable to register client with session manager");
  74         }
  75 }
  76
  77 static gboolean
  78 session_manager_connect (void)
  79 {
  80         GVariant *res;
  81         gboolean is_running;
  82
  83         sm_proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION, 0, NULL,
  84                                               SM_DBUS_NAME,
  85                                               SM_DBUS_PATH,
  86                                               SM_DBUS_INTERFACE, NULL, NULL);
  87
  88         res = g_dbus_proxy_call_sync (sm_proxy,
  89                                  "IsSessionRunning", NULL,
  90                                   0, 1000, NULL, NULL);
  91
  92         if (res) {
  93                 g_variant_get (res, "(b)", &is_running);
  94                 g_variant_unref (res);
  95                 if (is_running) {
  96                         if (!register_client ())
  97                                 g_warning ("Unable to register client with session manager");
  98                 }
  99         }
 100
 101         g_signal_connect (G_OBJECT (sm_proxy), "g-signal",
 102                           G_CALLBACK (on_session_signal), NULL);
 103
 104         return (sm_proxy != NULL);
 105 }
 106
 107 static gboolean
 108 end_session_response (gboolean is_okay, const gchar *reason)
 109 {
 110         GVariant *ret;
 111         GError *error = NULL;
 112
 113         if (!reason)
 114                 reason = "";
 115
 116         ret = g_dbus_proxy_call_sync (client_proxy, "EndSessionResponse",
 117                                       g_variant_new ("(bs)", is_okay, reason),
 118                                       0, 1000, NULL, &error);
 119
 120         if (!ret) {
 121                 g_warning ("Failed to send session response %s", error->message);
 122                 g_error_free (error);
 123                 return FALSE;
 124         }
 125         else
 126                 g_variant_unref (ret);
 127
 128         return TRUE;
 129 }
 130
 131 static void
 132 client_proxy_signal_cb (GDBusProxy *proxy,
 133                         gchar *sender_name,
 134                         gchar *signal_name,
 135                         GVariant *parameters,
 136                         gpointer user_data)
 137 {
 138         if (g_strcmp0 (signal_name, "QueryEndSession") == 0) {
 139                 g_debug ("Got QueryEndSession signal");
 140                 end_session_response (TRUE, NULL);
 141         } else if (g_strcmp0 (signal_name, "EndSession") == 0) {
 142                 g_debug ("Got EndSession signal");
 143                 end_session_response (TRUE, NULL);
 144                 g_main_loop_quit (mainloop);
 145         } else if (g_strcmp0 (signal_name, "Stop") == 0) {
 146                 g_debug ("Got Stop signal");
 147                 g_main_loop_quit (mainloop);
 148         }
 149 }
 150
 151 static gboolean
 152 register_client (void)
 153 {
 154         GError     *error;
 155         GVariant *res;
 156         const char *startup_id;
 157         const char *app_id;
 158
 159         if (client_proxy)
 160                 return TRUE;
 161
 162         startup_id = g_getenv ("DESKTOP_AUTOSTART_ID");
 163         if (!startup_id)
 164                 startup_id = "";
 165         app_id = "at-spi-registryd.desktop";
 166
 167         error = NULL;
 168         res = g_dbus_proxy_call_sync (sm_proxy,
 169                                  "RegisterClient",
 170                                       g_variant_new ("(ss)", app_id,
 171                                                      startup_id),
 172                                       0, 1000, NULL, &error);
 173         if (! res) {
 174                 const char *message = (error && error->message ? error->message
 175                                        : "no error");
 176                 g_warning ("Failed to register client: %s", message);
 177                 if (error)
 178                   g_error_free (error);
 179                 return FALSE;
 180         }
 181         g_variant_get (res, "(o)", &client_id);
 182         g_variant_unref (res);
 183
 184         client_proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION, 0, NULL,
 185                                                   SM_DBUS_NAME,
 186                                                   client_id,
 187                                                   SM_CLIENT_DBUS_INTERFACE,
 188                                                   NULL, NULL);
 189
 190         g_signal_connect (client_proxy, "g-signal",
 191                           G_CALLBACK (client_proxy_signal_cb), NULL);
 192
 193         g_unsetenv ("DESKTOP_AUTOSTART_ID");
 194
 195         return TRUE;
 196 }
 197
 198 /*---------------------------------------------------------------------------*/
 199
 200
 201 /*---------------------------------------------------------------------------*/
 202
 203 typedef GObject *(*gconf_client_get_default_t) ();
 204 typedef gboolean (*gconf_client_get_bool_t)(GObject *, const char *, void *);
 205
 206 int
 207 main (int argc, char **argv)
 208 {
 209   SpiRegistry *registry;
 210   SpiDEController *dec;
 211
 212   DBusConnection *bus = NULL;
 213
 214   GOptionContext *opt;
 215
 216   GError *err = NULL;
 217   int ret;
 218
 219   /*Parse command options*/
 220   opt = g_option_context_new(NULL);
 221   g_option_context_add_main_entries(opt, optentries, NULL);
 222
 223   if (!g_option_context_parse(opt, &argc, &argv, &err))
 224     {
 225       g_error("Option parsing failed: %s\n", err->message);
 226       g_clear_error (&err);
 227     }
 228
 229   if (dbus_name == NULL)
 230       dbus_name = SPI_DBUS_NAME_REGISTRY;
 231
 232   bus = atspi_get_a11y_bus ();
 233   if (!bus)
 234   {
 235     return 0;
 236   }
 237
 238   mainloop = g_main_loop_new (NULL, FALSE);
 239   atspi_dbus_connection_setup_with_g_main(bus, NULL);
 240
 241   ret = dbus_bus_request_name(bus, dbus_name, DBUS_NAME_FLAG_DO_NOT_QUEUE, NULL);
 242   if (ret == DBUS_REQUEST_NAME_REPLY_EXISTS)
 243     {
 244       exit (0); /* most likely already running */
 245     }
 246   else
 247     {
 248       g_print ("SpiRegistry daemon is running with well-known name - %s\n", dbus_name);
 249     }
 250
 251   registry = spi_registry_new (bus);
 252   dec = spi_registry_dec_new (registry, bus);
 253
 254   if (use_gnome_session)
 255     {
 256       if (!session_manager_connect ())
 257           g_warning ("Unable to connect to session manager");
 258     }
 259
 260   g_main_loop_run (mainloop);
 261
 262   dbus_connection_close (bus);
 263   dbus_connection_unref (bus);
 264   g_object_unref (dec);
 265   g_object_unref (registry);
 266
 267   return 0;
 268 }