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