/* -*- mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
- *
- * at-spi-bus-launcher: Manage the a11y bus as a child process
+ *
+ * at-spi-bus-launcher: Manage the a11y bus as a child process
*
* Copyright 2011 Red Hat, Inc.
*
#include <X11/Xatom.h>
#endif
+//TODO: move to vconf/vconf-internal-setting-keys.h?
+#define VCONFKEY_SETAPPL_ACCESSIBILITY_UNIVERSAL_SWITCH "db/setting/accessibility/universal-switch"
+
#define APP_CONTROL_OPERATION_SCREEN_READ "http://tizen.org/appcontrol/operation/read_screen"
+#define APP_CONTROL_OPERATION_UNIVERSAL_SWITCH "http://tizen.org/appcontrol/operation/universal_switch"
#include <appsvc.h>
#include <vconf.h>
#define LOGD(arg...) do {if (log_file) {fprintf(log_file, ##arg);fprintf(log_file, "\n"); fflush(log_file);}} while(0)
#endif
+static gboolean _launch_process_repeat_until_success(gpointer user_data);
typedef enum {
A11Y_BUS_STATE_IDLE = 0,
} A11yBusState;
typedef struct {
+ const char * name;
+ const char * app_control_operation;
+ const char * vconf_key;
+ int launch_repeats;
+ int pid;
+} A11yBusClient;
+
+typedef struct {
GMainLoop *loop;
gboolean launch_immediately;
gboolean a11y_enabled;
gboolean screen_reader_enabled;
+ GHashTable *client_watcher_id;
GDBusConnection *session_bus;
GSettings *a11y_schema;
GSettings *interface_schema;
- int launch_screen_reader_repeats;
- gboolean screen_reader_needed;
- int pid;
+ A11yBusClient screen_reader;
+ A11yBusClient universal_switch;
+
+ GDBusProxy *client_proxy;
A11yBusState state;
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;
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 FALSE;
- argv[1] = g_strdup_printf ("--config-file=%s/at-spi2/accessibility.conf", SYSCONFDIR);
+ 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] = (char*)config_path;
if (pipe (app->pipefd) < 0)
g_error ("Failed to create pipe: %s", strerror (errno));
}
#endif
- if (argv[1]) g_free(argv[1]);
-
return TRUE;
error:
- if (argv[1]) g_free(argv[1]);
close (app->pipefd[0]);
close (app->pipefd[1]);
app->state = A11Y_BUS_STATE_ERROR;
&builder,
&invalidated_builder),
NULL);
+
+ g_variant_builder_clear (&builder);
+ g_variant_builder_clear (&invalidated_builder);
}
static void
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)
&builder,
&invalidated_builder),
NULL);
+ g_variant_builder_clear (&builder);
+ g_variant_builder_clear (&invalidated_builder);
+}
+
+static gboolean
+is_client_connected(A11yBusLauncher *app)
+{
+ guint watchers = g_hash_table_size(app->client_watcher_id);
+ LOGD("clients connected: %d", watchers);
+ return watchers > 0;
+}
+
+static void
+remove_client_watch(A11yBusLauncher *app,
+ const gchar *sender)
+{
+ LOGD("Remove client watcher for %s", sender);
+ guint watcher_id = GPOINTER_TO_UINT(g_hash_table_lookup(app->client_watcher_id, sender));
+ if (watcher_id)
+ g_bus_unwatch_name(watcher_id);
+
+ g_hash_table_remove(app->client_watcher_id, sender);
+ if (!is_client_connected(app))
+ handle_a11y_enabled_change (app, FALSE, TRUE);
+}
+
+static void
+on_client_name_vanished (GDBusConnection *connection,
+ const gchar *name,
+ gpointer user_data)
+{
+ A11yBusLauncher *app = user_data;
+ remove_client_watch(app, name);
+}
+
+static void
+add_client_watch(A11yBusLauncher *app,
+ const gchar *sender)
+{
+ LOGD("Add client watcher for %s", sender);
+
+ if (g_hash_table_contains(app->client_watcher_id, sender))
+ {
+ LOGI("Watcher for %s already registered", sender);
+ return;
+ }
+
+ guint watcher_id = g_bus_watch_name(G_BUS_TYPE_SESSION,
+ sender,
+ G_BUS_NAME_WATCHER_FLAGS_NONE,
+ NULL,
+ on_client_name_vanished,
+ app,
+ NULL);
+
+ g_hash_table_insert(app->client_watcher_id, g_strdup(sender), GUINT_TO_POINTER(watcher_id));
+ handle_a11y_enabled_change (app, TRUE, TRUE);
}
static gboolean
if (g_strcmp0 (property_name, "IsEnabled") == 0)
{
- handle_a11y_enabled_change (app, enabled, TRUE);
+ if (enabled)
+ add_client_watch(app, sender);
+ else
+ remove_client_watch(app, sender);
return TRUE;
}
else if (g_strcmp0 (property_name, "ScreenReaderEnabled") == 0)
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];
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);
handle_screen_reader_enabled_change (_global_app, new_val, FALSE);
}
+static int
+_process_dead_tracker (int pid, void *data)
+{
+ A11yBusLauncher *app = data;
+
+ if (app->screen_reader.pid > 0 && pid == app->screen_reader.pid)
+ {
+ LOGE("screen reader is dead, pid: %d, restarting", pid);
+ app->screen_reader.pid = 0;
+ g_timeout_add_seconds (2, _launch_process_repeat_until_success, &app->screen_reader);
+ }
+
+ if (app->universal_switch.pid > 0 && pid == app->universal_switch.pid)
+ {
+ LOGE("universal switch is dead, pid: %d, restarting", pid);
+ app->universal_switch.pid = 0;
+ g_timeout_add_seconds (2, _launch_process_repeat_until_success, &app->universal_switch);
+ }
+ return 0;
+}
+
+static void
+_register_process_dead_tracker ()
+{
+ if(_global_app->screen_reader.pid > 0 || _global_app->universal_switch.pid > 0) {
+ LOGD("registering process dead tracker");
+ aul_listen_app_dead_signal(_process_dead_tracker, _global_app);
+ } else {
+ LOGD("unregistering process dead tracker");
+ aul_listen_app_dead_signal(NULL, NULL);
+ }
+}
+
+
static gboolean
-_launch_screen_reader(gpointer user_data, gboolean by_vconf_change)
+_launch_client(A11yBusClient *client, gboolean by_vconf_change)
{
- A11yBusLauncher *bl = user_data;
- LOGD("Launching screen reader");
+ LOGD("Launching %s", client->name);
bundle *kb = NULL;
gboolean ret = FALSE;
}
}
- int operation_error = appsvc_set_operation(kb, APP_CONTROL_OPERATION_SCREEN_READ);
+ int operation_error = appsvc_set_operation(kb, client->app_control_operation);
LOGD("appsvc_set_operation: %i", operation_error);
- bl->pid = appsvc_run_service(kb, 0, NULL, NULL);
+ client->pid = appsvc_run_service(kb, 0, NULL, NULL);
- if (bl->pid > 0)
+ if (client->pid > 0)
{
- LOGD("Screen reader launched with pid: %i", bl->pid);
+ LOGD("Process launched with pid: %i", client->pid);
+ _register_process_dead_tracker();
ret = TRUE;
}
else
{
- LOGD("Can't start screen-reader - error code: %i", bl->pid);
+ LOGD("Can't start %s - error code: %i", client->name, client->pid);
}
-
bundle_free(kb);
return ret;
}
static gboolean
-_launch_screen_reader_repeat_until_success(gpointer user_data) {
- A11yBusLauncher *bl = user_data;
+_launch_process_repeat_until_success(gpointer user_data) {
+ A11yBusClient *client = user_data;
- if (bl->launch_screen_reader_repeats > 100 || bl->pid > 0)
+ if (client->launch_repeats > 100 || client->pid > 0)
{
//do not try anymore
return FALSE;
}
- gboolean ret = _launch_screen_reader(user_data, FALSE);
+ gboolean ret = _launch_client(client, FALSE);
if (ret)
{
//we managed to
- bl->launch_screen_reader_repeats = 0;
+ client->launch_repeats = 0;
return FALSE;
}
+ client->launch_repeats++;
//try again
return TRUE;
}
static gboolean
-_terminate_screen_reader(A11yBusLauncher *bl)
+_terminate_process(int pid)
{
- LOGD("Terminating screen reader");
int ret;
int ret_aul;
- if (bl->pid <= 0)
+ if (pid <= 0)
return FALSE;
-
- int status = aul_app_get_status_bypid(bl->pid);
+ int status = aul_app_get_status_bypid(pid);
if (status < 0)
{
- LOGD("App with pid %d already terminated", bl->pid);
- bl->pid = 0;
+ LOGD("App with pid %d already terminated", pid);
return TRUE;
}
- LOGD("terminate process with pid %d", bl->pid);
- ret_aul = aul_terminate_pid(bl->pid);
+ LOGD("terminate process with pid %d", pid);
+ ret_aul = aul_terminate_pid(pid);
if (ret_aul >= 0)
{
LOGD("Terminating with aul_terminate_pid: return is %d", ret_aul);
- bl->pid = 0;
return TRUE;
}
else
LOGD("aul_terminate_pid failed: return is %d", ret_aul);
LOGD("Unable to terminate process using aul api. Sending SIGTERM signal");
- ret = kill(bl->pid, SIGTERM);
+ ret = kill(pid, SIGTERM);
if (!ret)
{
- bl->pid = 0;
return TRUE;
}
- LOGD("Unable to terminate process: %d with api or signal.", bl->pid);
+ LOGD("Unable to terminate process: %d with api or signal.", pid);
return FALSE;
}
-void screen_reader_cb(keynode_t *node, void *user_data)
+static gboolean
+_terminate_client(A11yBusClient *client)
{
- A11yBusLauncher *bl = user_data;
- int ret;
+ LOGD("Terminating %s", client->name);
+ int pid = client->pid;
+ client->pid = 0;
+ _register_process_dead_tracker();
+ gboolean ret = _terminate_process(pid);
+ return ret;
+}
- ret = vconf_keynode_get_bool(node);
- LOGD("vconf_keynode_get_bool(node): %i", ret);
- if (ret < 0)
+void vconf_client_cb(keynode_t *node, void *user_data)
+{
+ A11yBusClient *client = user_data;
+ int client_needed = vconf_keynode_get_bool(node);
+ LOGD("vconf_keynode_get_bool(node): %i", client_needed);
+ if (client_needed < 0)
return;
//check if process really exists (e.g didn't crash)
- if (bl->pid > 0)
+ if (client->pid > 0)
{
- int err = kill(bl->pid,0);
+ int err = kill(client->pid,0);
//process doesn't exist
if (err == ESRCH)
- bl->pid = 0;
+ client->pid = 0;
}
- bl->screen_reader_needed = ret;
- LOGD("bl->screen_reader_needed: %i, bl->pid: %i", ret, bl->pid);
- if (!bl->screen_reader_needed && (bl->pid > 0))
- _terminate_screen_reader(bl);
- else if (bl->screen_reader_needed && (bl->pid <= 0))
- _launch_screen_reader(bl, TRUE);
+ LOGD("client_needed: %i, client->pid: %i", client_needed, client->pid);
+ if (!client_needed && (client->pid > 0))
+ _terminate_client(client);
+ else if (client_needed && (client->pid <= 0))
+ _launch_client(client, TRUE);
+}
+
+
+static gboolean register_executable(A11yBusClient *client)
+{
+ gboolean client_needed = FALSE;
+
+ if(!client->vconf_key) {
+ LOGE("Vconf_key missing for client: %s \n", client->vconf_key);
+ return FALSE;
+ }
+
+ int ret = vconf_get_bool(client->vconf_key, &client_needed);
+ if (ret != 0)
+ {
+ LOGD("Could not read %s key value.\n", client->vconf_key);
+ return FALSE;
+ }
+ ret = vconf_notify_key_changed(client->vconf_key, vconf_client_cb, client);
+ if(ret != 0)
+ {
+ LOGD("Could not add information level callback\n");
+ return FALSE;
+ }
+
+ if (client_needed)
+ g_timeout_add_seconds(2,_launch_process_repeat_until_success, client);
+ return TRUE;
}
int
#endif
LOGD("Starting atspi bus launcher");
- GError *error = NULL;
- GMainLoop *loop;
- GDBusConnection *session_bus;
- int name_owner_id;
gboolean a11y_set = FALSE;
gboolean screen_reader_set = FALSE;
gint i;
_global_app = g_slice_new0 (A11yBusLauncher);
_global_app->loop = g_main_loop_new (NULL, FALSE);
- _global_app->launch_screen_reader_repeats = 0;
+ _global_app->client_watcher_id = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, NULL);
+
+ _global_app->screen_reader.name = "screen-reader";
+ _global_app->screen_reader.app_control_operation = APP_CONTROL_OPERATION_SCREEN_READ;
+ _global_app->screen_reader.vconf_key = VCONFKEY_SETAPPL_ACCESSIBILITY_TTS;
+
+ _global_app->universal_switch.name = "universal-switch";
+ _global_app->universal_switch.app_control_operation = APP_CONTROL_OPERATION_UNIVERSAL_SWITCH;
+ _global_app->universal_switch.vconf_key = VCONFKEY_SETAPPL_ACCESSIBILITY_UNIVERSAL_SWITCH;
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) == 2)
+ 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) == 2)
+ &_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]);
introspection_data = g_dbus_node_info_new_for_xml (introspection_xml, NULL);
g_assert (introspection_data != NULL);
- name_owner_id = g_bus_own_name (G_BUS_TYPE_SESSION,
+ g_bus_own_name (G_BUS_TYPE_SESSION,
"org.a11y.Bus",
G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT,
on_bus_acquired,
_global_app,
NULL);
- int ret = vconf_get_bool(VCONFKEY_SETAPPL_ACCESSIBILITY_TTS, &_global_app->screen_reader_needed);
- if (ret != 0)
- {
- LOGD("Could not read VCONFKEY_SETAPPL_ACCESSIBILITY_TTS key value.\n");
- return FALSE;
- }
- ret = vconf_notify_key_changed(VCONFKEY_SETAPPL_ACCESSIBILITY_TTS, screen_reader_cb, _global_app);
- if(ret != 0)
- {
- LOGD("Could not add information level callback\n");
- return FALSE;
- }
- if (_global_app->screen_reader_needed)
- g_timeout_add_seconds(2,_launch_screen_reader_repeat_until_success, _global_app);
+ register_executable (&_global_app->screen_reader);
+ register_executable (&_global_app->universal_switch);
g_main_loop_run (_global_app->loop);
projects / platform / upstream / at-spi2-core.git / blobdiff