#include <signal.h>
#include <sys/wait.h>
#include <errno.h>
+#include <stdio.h>
#include <gio/gio.h>
+#ifdef HAVE_X11
#include <X11/Xlib.h>
#include <X11/Xatom.h>
+#endif
typedef enum {
A11Y_BUS_STATE_IDLE = 0,
typedef struct {
GMainLoop *loop;
gboolean launch_immediately;
+ gboolean a11y_enabled;
+ gboolean screen_reader_enabled;
GDBusConnection *session_bus;
+ GSettings *a11y_schema;
+ GSettings *interface_schema;
+
+ GDBusProxy *client_proxy;
A11yBusState state;
/* -1 == error, 0 == pending, > 0 == running */
" <arg type='s' name='address' direction='out'/>"
" </method>"
" </interface>"
+ "<interface name='org.a11y.Status'>"
+ "<property name='IsEnabled' type='b' access='readwrite'/>"
+ "<property name='ScreenReaderEnabled' type='b' access='readwrite'/>"
+ "</interface>"
"</node>";
static GDBusNodeInfo *introspection_data = NULL;
static void
+respond_to_end_session (GDBusProxy *proxy)
+{
+ GVariant *parameters;
+
+ parameters = g_variant_new ("(bs)", TRUE, "");
+
+ g_dbus_proxy_call (proxy,
+ "EndSessionResponse", parameters,
+ G_DBUS_CALL_FLAGS_NONE,
+ -1, NULL, NULL, NULL);
+}
+
+static void
+g_signal_cb (GDBusProxy *proxy,
+ gchar *sender_name,
+ gchar *signal_name,
+ GVariant *parameters,
+ gpointer user_data)
+{
+ A11yBusLauncher *app = user_data;
+
+ if (g_strcmp0 (signal_name, "QueryEndSession") == 0)
+ respond_to_end_session (proxy);
+ else if (g_strcmp0 (signal_name, "EndSession") == 0)
+ respond_to_end_session (proxy);
+ else if (g_strcmp0 (signal_name, "Stop") == 0)
+ g_main_loop_quit (app->loop);
+}
+
+static void
+client_proxy_ready_cb (GObject *source_object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ A11yBusLauncher *app = user_data;
+ GError *error = NULL;
+
+ app->client_proxy = g_dbus_proxy_new_for_bus_finish (res, &error);
+
+ if (error != NULL)
+ {
+ g_warning ("Failed to get a client proxy: %s", error->message);
+ g_error_free (error);
+
+ return;
+ }
+
+ g_signal_connect (app->client_proxy, "g-signal",
+ G_CALLBACK (g_signal_cb), app);
+}
+
+static void
+register_client (A11yBusLauncher *app)
+{
+ GDBusProxyFlags flags;
+ GDBusProxy *sm_proxy;
+ GError *error;
+ const gchar *app_id;
+ const gchar *autostart_id;
+ gchar *client_startup_id;
+ GVariant *parameters;
+ GVariant *variant;
+ gchar *object_path;
+
+ flags = G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES |
+ G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS;
+
+ error = NULL;
+ sm_proxy = g_dbus_proxy_new_sync (app->session_bus, flags, NULL,
+ "org.gnome.SessionManager",
+ "/org/gnome/SessionManager",
+ "org.gnome.SessionManager",
+ NULL, &error);
+
+ if (error != NULL)
+ {
+ g_warning ("Failed to get session manager proxy: %s", error->message);
+ g_error_free (error);
+
+ return;
+ }
+
+ app_id = "at-spi-bus-launcher";
+ autostart_id = g_getenv ("DESKTOP_AUTOSTART_ID");
+
+ if (autostart_id != NULL)
+ {
+ client_startup_id = g_strdup (autostart_id);
+ g_unsetenv ("DESKTOP_AUTOSTART_ID");
+ }
+ else
+ {
+ client_startup_id = g_strdup ("");
+ }
+
+ parameters = g_variant_new ("(ss)", app_id, client_startup_id);
+ g_free (client_startup_id);
+
+ error = NULL;
+ variant = g_dbus_proxy_call_sync (sm_proxy,
+ "RegisterClient", parameters,
+ G_DBUS_CALL_FLAGS_NONE,
+ -1, NULL, &error);
+
+ g_object_unref (sm_proxy);
+
+ if (error != NULL)
+ {
+ g_warning ("Failed to register client: %s", error->message);
+ g_error_free (error);
+
+ return;
+ }
+
+ g_variant_get (variant, "(o)", &object_path);
+ g_variant_unref (variant);
+
+ flags = G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES;
+ g_dbus_proxy_new_for_bus (G_BUS_TYPE_SESSION, flags, NULL,
+ "org.gnome.SessionManager", object_path,
+ "org.gnome.SessionManager.ClientPrivate",
+ NULL, client_proxy_ready_cb, app);
+
+ g_free (object_path);
+}
+
+static void
+name_appeared_handler (GDBusConnection *connection,
+ const gchar *name,
+ const gchar *name_owner,
+ gpointer user_data)
+{
+ A11yBusLauncher *app = user_data;
+
+ register_client (app);
+}
+
+static void
setup_bus_child (gpointer data)
{
A11yBusLauncher *app = data;
g_main_loop_quit (app->loop);
}
-static void
+static gboolean
ensure_a11y_bus (A11yBusLauncher *app)
{
GPid pid;
char *argv[] = { DBUS_DAEMON, NULL, "--nofork", "--print-address", "3", NULL };
char addr_buf[2048];
GError *error = NULL;
+ const char *config_path = NULL;
if (app->a11y_bus_pid != 0)
- return;
-
- argv[1] = g_strdup_printf ("--config-file=%s/at-spi2/accessibility.conf", SYSCONFDIR);
+ return FALSE;
+
+ if (g_file_test (SYSCONFDIR"/at-spi2/accessibility.conf", G_FILE_TEST_EXISTS))
+ config_path = "--config-file="SYSCONFDIR"/at-spi2/accessibility.conf";
+ else
+ config_path = "--config-file="DATADIR"/defaults/at-spi2/accessibility.conf";
+
+ argv[1] = config_path;
if (pipe (app->pipefd) < 0)
g_error ("Failed to create pipe: %s", strerror (errno));
app->a11y_bus_address = g_strchomp (g_strdup (addr_buf));
g_debug ("a11y bus address: %s", app->a11y_bus_address);
+#ifdef HAVE_X11
{
Display *display = XOpenDisplay (NULL);
if (display)
bus_address_atom,
XA_STRING, 8, PropModeReplace,
(guchar *) app->a11y_bus_address, strlen (app->a11y_bus_address));
+ XFlush (display);
+ XCloseDisplay (display);
}
- XFlush (display);
- XCloseDisplay (display);
}
+#endif
- return;
+ return TRUE;
error:
close (app->pipefd[0]);
close (app->pipefd[1]);
app->state = A11Y_BUS_STATE_ERROR;
+
+ return FALSE;
}
static void
}
}
-static const GDBusInterfaceVTable interface_vtable =
+static GVariant *
+handle_get_property (GDBusConnection *connection,
+ const gchar *sender,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *property_name,
+ GError **error,
+ gpointer user_data)
+{
+ A11yBusLauncher *app = user_data;
+
+ if (g_strcmp0 (property_name, "IsEnabled") == 0)
+ return g_variant_new ("b", app->a11y_enabled);
+ else if (g_strcmp0 (property_name, "ScreenReaderEnabled") == 0)
+ return g_variant_new ("b", app->screen_reader_enabled);
+ else
+ return NULL;
+}
+
+static void
+handle_a11y_enabled_change (A11yBusLauncher *app, gboolean enabled,
+ gboolean notify_gsettings)
+{
+ GVariantBuilder builder;
+ GVariantBuilder invalidated_builder;
+
+ if (enabled == app->a11y_enabled)
+ return;
+
+ app->a11y_enabled = enabled;
+
+ if (notify_gsettings && app->interface_schema)
+ {
+ g_settings_set_boolean (app->interface_schema, "toolkit-accessibility",
+ enabled);
+ g_settings_sync ();
+ }
+
+ g_variant_builder_init (&builder, G_VARIANT_TYPE_ARRAY);
+ g_variant_builder_init (&invalidated_builder, G_VARIANT_TYPE ("as"));
+ g_variant_builder_add (&builder, "{sv}", "IsEnabled",
+ g_variant_new_boolean (enabled));
+
+ g_dbus_connection_emit_signal (app->session_bus, NULL, "/org/a11y/bus",
+ "org.freedesktop.DBus.Properties",
+ "PropertiesChanged",
+ g_variant_new ("(sa{sv}as)", "org.a11y.Status",
+ &builder,
+ &invalidated_builder),
+ NULL);
+
+ g_variant_builder_clear (&builder);
+ g_variant_builder_clear (&invalidated_builder);
+}
+
+static void
+handle_screen_reader_enabled_change (A11yBusLauncher *app, gboolean enabled,
+ gboolean notify_gsettings)
+{
+ GVariantBuilder builder;
+ GVariantBuilder invalidated_builder;
+
+ if (enabled == app->screen_reader_enabled)
+ return;
+
+ /* If the screen reader is being enabled, we should enable accessibility
+ * if it isn't enabled already */
+ if (enabled)
+ handle_a11y_enabled_change (app, enabled, notify_gsettings);
+
+ app->screen_reader_enabled = enabled;
+
+ if (notify_gsettings && app->a11y_schema)
+ {
+ g_settings_set_boolean (app->a11y_schema, "screen-reader-enabled",
+ enabled);
+ g_settings_sync ();
+ }
+
+ g_variant_builder_init (&builder, G_VARIANT_TYPE_ARRAY);
+ g_variant_builder_init (&invalidated_builder, G_VARIANT_TYPE ("as"));
+ g_variant_builder_add (&builder, "{sv}", "ScreenReaderEnabled",
+ g_variant_new_boolean (enabled));
+
+ g_dbus_connection_emit_signal (app->session_bus, NULL, "/org/a11y/bus",
+ "org.freedesktop.DBus.Properties",
+ "PropertiesChanged",
+ g_variant_new ("(sa{sv}as)", "org.a11y.Status",
+ &builder,
+ &invalidated_builder),
+ NULL);
+
+ g_variant_builder_clear (&builder);
+ g_variant_builder_clear (&invalidated_builder);
+}
+
+static gboolean
+handle_set_property (GDBusConnection *connection,
+ const gchar *sender,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *property_name,
+ GVariant *value,
+ GError **error,
+ gpointer user_data)
+{
+ A11yBusLauncher *app = user_data;
+ const gchar *type = g_variant_get_type_string (value);
+ gboolean enabled;
+
+ if (g_strcmp0 (type, "b") != 0)
+ {
+ g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS,
+ "org.a11y.Status.%s expects a boolean but got %s", property_name, type);
+ return FALSE;
+ }
+
+ enabled = g_variant_get_boolean (value);
+
+ if (g_strcmp0 (property_name, "IsEnabled") == 0)
+ {
+ handle_a11y_enabled_change (app, enabled, TRUE);
+ return TRUE;
+ }
+ else if (g_strcmp0 (property_name, "ScreenReaderEnabled") == 0)
+ {
+ handle_screen_reader_enabled_change (app, enabled, TRUE);
+ return TRUE;
+ }
+ else
+ {
+ g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS,
+ "Unknown property '%s'", property_name);
+ return FALSE;
+ }
+}
+
+static const GDBusInterfaceVTable bus_vtable =
{
handle_method_call,
- NULL,
+ NULL, /* handle_get_property, */
NULL /* handle_set_property */
};
+static const GDBusInterfaceVTable status_vtable =
+{
+ NULL, /* handle_method_call */
+ handle_get_property,
+ handle_set_property
+};
+
static void
on_bus_acquired (GDBusConnection *connection,
const gchar *name,
registration_id = g_dbus_connection_register_object (connection,
"/org/a11y/bus",
introspection_data->interfaces[0],
- &interface_vtable,
+ &bus_vtable,
_global_app,
NULL,
&error);
if (registration_id == 0)
- g_error ("%s", error->message);
+ {
+ g_error ("%s", error->message);
+ g_clear_error (&error);
+ }
+
+ g_dbus_connection_register_object (connection,
+ "/org/a11y/bus",
+ introspection_data->interfaces[1],
+ &status_vtable,
+ _global_app,
+ NULL,
+ NULL);
}
static void
const gchar *name,
gpointer user_data)
{
- A11yBusLauncher *app = user_data;
- (void) app;
+ g_bus_watch_name (G_BUS_TYPE_SESSION,
+ "org.gnome.SessionManager",
+ G_BUS_NAME_WATCHER_FLAGS_NONE,
+ name_appeared_handler, NULL,
+ user_data, NULL);
}
static int sigterm_pipefd[2];
}
static gboolean
-is_a11y_using_corba (void)
+already_running ()
{
- char *gconf_argv[] = { "gconftool-2", "--get", "/desktop/gnome/interface/at-spi-corba", NULL };
- char *stdout = NULL;
- int estatus;
+#ifdef HAVE_X11
+ Atom AT_SPI_BUS;
+ Atom actual_type;
+ Display *bridge_display;
+ int actual_format;
+ unsigned char *data = NULL;
+ unsigned long nitems;
+ unsigned long leftover;
gboolean result = FALSE;
- if (!g_spawn_sync (NULL, gconf_argv, NULL,
- G_SPAWN_SEARCH_PATH, NULL, NULL, &stdout, NULL, &estatus, NULL))
- goto out;
- if (estatus != 0)
- goto out;
- if (g_str_has_prefix (stdout, "true"))
- result = TRUE;
- out:
- g_free (stdout);
+ bridge_display = XOpenDisplay (NULL);
+ if (!bridge_display)
+ return FALSE;
+
+ AT_SPI_BUS = XInternAtom (bridge_display, "AT_SPI_BUS", False);
+ XGetWindowProperty (bridge_display,
+ XDefaultRootWindow (bridge_display),
+ AT_SPI_BUS, 0L,
+ (long) BUFSIZ, False,
+ (Atom) 31, &actual_type, &actual_format,
+ &nitems, &leftover, &data);
+
+ if (data)
+ {
+ GDBusConnection *bus;
+ bus = g_dbus_connection_new_for_address_sync ((const gchar *)data, 0,
+ NULL, NULL, NULL);
+ if (bus != NULL)
+ {
+ result = TRUE;
+ g_object_unref (bus);
+ }
+ }
+
+ XCloseDisplay (bridge_display);
return result;
+#else
+ return FALSE;
+#endif
+}
+
+static GSettings *
+get_schema (const gchar *name)
+{
+ const char * const *schemas = NULL;
+ gint i;
+
+ schemas = g_settings_list_schemas ();
+ for (i = 0; schemas[i]; i++)
+ {
+ if (!strcmp (schemas[i], name))
+ return g_settings_new (schemas[i]);
+ }
+
+ return NULL;
+}
+
+static void
+gsettings_key_changed (GSettings *gsettings, const gchar *key, void *user_data)
+{
+ gboolean new_val = g_settings_get_boolean (gsettings, key);
+ A11yBusLauncher *app = user_data;
+
+ if (!strcmp (key, "toolkit-accessibility"))
+ handle_a11y_enabled_change (_global_app, new_val, FALSE);
+ else if (!strcmp (key, "screen-reader-enabled"))
+ handle_screen_reader_enabled_change (_global_app, new_val, FALSE);
}
int
GMainLoop *loop;
GDBusConnection *session_bus;
int name_owner_id;
+ gboolean a11y_set = FALSE;
+ gboolean screen_reader_set = FALSE;
+ gint i;
- g_type_init ();
-
- if (is_a11y_using_corba ())
+ if (already_running ())
return 0;
_global_app = g_slice_new0 (A11yBusLauncher);
_global_app->loop = g_main_loop_new (NULL, FALSE);
- _global_app->launch_immediately = (argc == 2 && strcmp (argv[1], "--launch-immediately") == 0);
+
+ for (i = 1; i < argc; i++)
+ {
+ if (!strcmp (argv[i], "--launch-immediately"))
+ _global_app->launch_immediately = TRUE;
+ else if (sscanf (argv[i], "--a11y=%d", &_global_app->a11y_enabled) == 1)
+ a11y_set = TRUE;
+ else if (sscanf (argv[i], "--screen-reader=%d",
+ &_global_app->screen_reader_enabled) == 1)
+ screen_reader_set = TRUE;
+ else
+ g_error ("usage: %s [--launch-immediately] [--a11y=0|1] [--screen-reader=0|1]", argv[0]);
+ }
+
+ _global_app->interface_schema = get_schema ("org.gnome.desktop.interface");
+ _global_app->a11y_schema = get_schema ("org.gnome.desktop.a11y.applications");
+
+ if (!a11y_set)
+ {
+ _global_app->a11y_enabled = _global_app->interface_schema
+ ? g_settings_get_boolean (_global_app->interface_schema, "toolkit-accessibility")
+ : _global_app->launch_immediately;
+ }
+
+ if (!screen_reader_set)
+ {
+ _global_app->screen_reader_enabled = _global_app->a11y_schema
+ ? g_settings_get_boolean (_global_app->a11y_schema, "screen-reader-enabled")
+ : FALSE;
+ }
+
+ if (_global_app->interface_schema)
+ g_signal_connect (_global_app->interface_schema,
+ "changed::toolkit-accessibility",
+ G_CALLBACK (gsettings_key_changed), _global_app);
+
+ if (_global_app->a11y_schema)
+ g_signal_connect (_global_app->a11y_schema,
+ "changed::screen-reader-enabled",
+ G_CALLBACK (gsettings_key_changed), _global_app);
init_sigterm_handling (_global_app);
* GDM is launching a login on an X server it was using before,
* we don't want early login processes to pick up the stale address.
*/
+#ifdef HAVE_X11
{
Display *display = XOpenDisplay (NULL);
if (display)
XCloseDisplay (display);
}
}
+#endif
if (_global_app->a11y_launch_error_message)
{
projects / platform / upstream / at-spi2-core.git / blobdiff