*
* at-spi-bus-launcher: Manage the a11y bus as a child process
*
- * Copyright 2011 Red Hat, Inc.
+ * Copyright 2011-2018 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
#include <unistd.h>
#include <string.h>
#include <signal.h>
+#ifdef __linux__
+#include <sys/prctl.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#endif
#include <sys/wait.h>
#include <errno.h>
#include <stdio.h>
#endif
//TODO: move to vconf/vconf-internal-setting-keys.h?
-#define VCONFKEY_SETAPPL_ACCESSIBILITY_UNIVERSAL_SWITCH "db/setting/accessibility/universal-switch"
+#define VCONFKEY_SETAPPL_ACCESSIBILITY_UNIVERSAL_SWITCH_CONFIGURATION_SERVICE "db/setting/accessibility/universal-switch/configuration-service"
+#define VCONFKEY_SETAPPL_ACCESSIBILITY_UNIVERSAL_SWITCH_INTERACTION_SERVICE "db/setting/accessibility/universal-switch/interaction-service"
+
+#define MAX_NUMBER_OF_KEYS_PER_CLIENT 2
#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"
typedef struct {
const char * name;
const char * app_control_operation;
- const char * vconf_key;
+ const char * vconf_key[MAX_NUMBER_OF_KEYS_PER_CLIENT];
+ int number_of_keys;
int launch_repeats;
int pid;
} A11yBusClient;
GDBusConnection *session_bus;
GSettings *a11y_schema;
GSettings *interface_schema;
+ int name_owner_id;
A11yBusClient screen_reader;
A11yBusClient universal_switch;
+ GDBusProxy *client_proxy;
+
A11yBusState state;
/* -1 == error, 0 == pending, > 0 == running */
int a11y_bus_pid;
char *a11y_bus_address;
int pipefd[2];
+ int listenfd;
char *a11y_launch_error_message;
} A11yBusLauncher;
static GDBusNodeInfo *introspection_data = NULL;
static void
-setup_bus_child (gpointer data)
+respond_to_end_session (GDBusProxy *proxy)
{
- A11yBusLauncher *app = data;
- (void) app;
+ GVariant *parameters;
- close (app->pipefd[0]);
- dup2 (app->pipefd[1], 3);
- close (app->pipefd[1]);
+ parameters = g_variant_new ("(bs)", TRUE, "");
- /* On Linux, tell the bus process to exit if this process goes away */
-#ifdef __linux
-#include <sys/prctl.h>
- prctl (PR_SET_PDEATHSIG, 15);
-#endif
+ 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);
}
/**
{
ssize_t bytes_read;
- while (max_bytes > 1 && (bytes_read = read (fd, buf, MAX (4096, max_bytes - 1))))
+ while (max_bytes > 1 && (bytes_read = read (fd, buf, MIN (4096, max_bytes - 1))))
{
if (bytes_read < 0)
return FALSE;
g_main_loop_quit (app->loop);
}
+#ifdef DBUS_DAEMON
+static void
+setup_bus_child_daemon (gpointer data)
+{
+ A11yBusLauncher *app = data;
+ (void) app;
+
+ close (app->pipefd[0]);
+ dup2 (app->pipefd[1], 3);
+ close (app->pipefd[1]);
+
+ /* On Linux, tell the bus process to exit if this process goes away */
+#ifdef __linux__
+ prctl (PR_SET_PDEATHSIG, 15);
+#endif
+}
+
static gboolean
-ensure_a11y_bus (A11yBusLauncher *app)
+ensure_a11y_bus_daemon (A11yBusLauncher *app, char *config_path)
{
+ char *argv[] = { DBUS_DAEMON, config_path, "--nofork", "--print-address", "3", NULL };
GPid pid;
- char *argv[] = { DBUS_DAEMON, NULL, "--nofork", "--print-address", "3", NULL };
char addr_buf[2048];
GError *error = NULL;
if (app->a11y_bus_pid != 0)
return FALSE;
- argv[1] = g_strdup_printf ("--config-file=%s/at-spi2/accessibility.conf", SYSCONFDIR);
+ argv[1] = (char*)config_path;
if (pipe (app->pipefd) < 0)
g_error ("Failed to create pipe: %s", strerror (errno));
+ g_clear_pointer (&app->a11y_launch_error_message, g_free);
+
if (!g_spawn_async (NULL,
argv,
NULL,
G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD,
- setup_bus_child,
+ setup_bus_child_daemon,
app,
&pid,
&error))
app->a11y_bus_address = g_strchomp (g_strdup (addr_buf));
LOGD("a11y bus address: %s", app->a11y_bus_address);
+ return TRUE;
+
+error:
+ close (app->pipefd[0]);
+ close (app->pipefd[1]);
+ app->state = A11Y_BUS_STATE_ERROR;
+
+ return FALSE;
+}
+#else
+static gboolean
+ensure_a11y_bus_daemon (A11yBusLauncher *app, char *config_path)
+{
+ return FALSE;
+}
+#endif
+
+#ifdef DBUS_BROKER
+static void
+setup_bus_child_broker (gpointer data)
+{
+ A11yBusLauncher *app = data;
+ gchar *pid_str;
+ (void) app;
+
+ dup2 (app->listenfd, 3);
+ close (app->listenfd);
+ g_setenv("LISTEN_FDS", "1", TRUE);
+
+ pid_str = g_strdup_printf("%u", getpid());
+ g_setenv("LISTEN_PID", pid_str, TRUE);
+ g_free(pid_str);
+
+ /* Tell the bus process to exit if this process goes away */
+ prctl (PR_SET_PDEATHSIG, SIGTERM);
+}
+
+static gboolean
+ensure_a11y_bus_broker (A11yBusLauncher *app, char *config_path)
+{
+ char *argv[] = { DBUS_BROKER, config_path, "--scope", "user", NULL };
+ struct sockaddr_un addr = { .sun_family = AF_UNIX };
+ socklen_t addr_len = sizeof(addr);
+ GPid pid;
+ GError *error = NULL;
+
+ if ((app->listenfd = socket (PF_UNIX, SOCK_STREAM | SOCK_NONBLOCK, 0)) < 0)
+ g_error ("Failed to create listening socket: %s", strerror (errno));
+
+ if (bind (app->listenfd, (struct sockaddr *)&addr, sizeof(sa_family_t)) < 0)
+ g_error ("Failed to bind listening socket: %s", strerror (errno));
+
+ if (getsockname (app->listenfd, (struct sockaddr *)&addr, &addr_len) < 0)
+ g_error ("Failed to get socket name for listening socket: %s", strerror(errno));
+
+ if (listen (app->listenfd, 1024) < 0)
+ g_error ("Failed to listen on socket: %s", strerror(errno));
+
+ g_clear_pointer (&app->a11y_launch_error_message, g_free);
+
+ if (!g_spawn_async (NULL,
+ argv,
+ NULL,
+ G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD,
+ setup_bus_child_broker,
+ app,
+ &pid,
+ &error))
+ {
+ app->a11y_bus_pid = -1;
+ app->a11y_launch_error_message = g_strdup (error->message);
+ g_clear_error (&error);
+ goto error;
+ }
+
+ close (app->listenfd);
+ app->listenfd = -1;
+
+ g_child_watch_add (pid, on_bus_exited, app);
+ app->a11y_bus_pid = pid;
+ g_debug ("Launched a11y bus, child is %ld", (long) pid);
+ app->state = A11Y_BUS_STATE_RUNNING;
+
+ app->a11y_bus_address = g_strconcat("unix:abstract=", addr.sun_path + 1, NULL);
+ g_debug ("a11y bus address: %s", app->a11y_bus_address);
+
+ return TRUE;
+
+error:
+ close (app->listenfd);
+ app->state = A11Y_BUS_STATE_ERROR;
+
+ return FALSE;
+}
+#else
+static gboolean
+ensure_a11y_bus_broker (A11yBusLauncher *app, char *config_path)
+{
+ return FALSE;
+}
+#endif
+
+static gboolean
+ensure_a11y_bus (A11yBusLauncher *app)
+{
+ char *config_path = NULL;
+ gboolean success = FALSE;
+
+ if (app->a11y_bus_pid != 0)
+ 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";
+
+#ifdef WANT_DBUS_BROKER
+ success = ensure_a11y_bus_broker (app, config_path);
+ if (!success)
+ {
+ if (!ensure_a11y_bus_daemon (app, config_path))
+ return FALSE;
+ }
+#else
+ success = ensure_a11y_bus_daemon (app, config_path);
+ if (!success)
+ {
+ if (!ensure_a11y_bus_broker (app, config_path))
+ return FALSE;
+ }
+#endif
+
#ifdef HAVE_X11
{
Display *display = XOpenDisplay (NULL);
}
#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;
-
- return FALSE;
}
static void
&builder,
&invalidated_builder),
NULL);
+
g_variant_builder_clear (&builder);
g_variant_builder_clear (&invalidated_builder);
}
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 GSettings *
get_schema (const gchar *name)
{
+#if GLIB_CHECK_VERSION (2, 32, 0)
+ GSettingsSchemaSource *source = g_settings_schema_source_get_default ();
+ if (!source) return NULL;
+
+ GSettingsSchema *schema = g_settings_schema_source_lookup (source, name, FALSE);
+
+ if (schema == NULL)
+ return NULL;
+
+ return g_settings_new_full (schema, NULL, NULL);
+#else
const char * const *schemas = NULL;
gint i;
}
return NULL;
+#endif
}
static void
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;
+
+ gboolean client_needed = FALSE;
+ int i;
+ for (i = 0; i < client->number_of_keys; i++) {
+ int status = 0;
+ int ret =vconf_get_bool(client->vconf_key[i], &status);
+ if (ret != 0)
+ {
+ LOGD("Could not read %s key value.\n", client->vconf_key[i]);
+ return;
+ }
+ LOGD("vconf_keynode_get_bool(node): %i", status);
+ if (status < 0)
+ return;
+
+ if (status == 1) {
+ client_needed = TRUE;
+ break;
+ }
+ }
//check if process really exists (e.g didn't crash)
if (client->pid > 0)
}
-static gboolean register_client(A11yBusClient *client)
+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 i;
+ for (i = 0; i < client->number_of_keys; i++) {
+ if (!client->vconf_key[i]) {
+ LOGE("Vconf_key missing for client: %d \n", i);
+ 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;
- }
+ int status = 0;
+ int ret = vconf_get_bool(client->vconf_key[i], &status);
+ if (ret != 0)
+ {
+ LOGD("Could not read %s key value.\n", client->vconf_key[i]);
+ return FALSE;
+ }
+ ret = vconf_notify_key_changed(client->vconf_key[i], vconf_client_cb, client);
+ if (ret != 0)
+ {
+ LOGD("Could not add information level callback\n");
+ return FALSE;
+ }
+ if (status)
+ client_needed = TRUE;
+ }
if (client_needed)
- g_timeout_add_seconds(2,_launch_process_repeat_until_success, client);
+ g_timeout_add_seconds(2,_launch_process_repeat_until_success, client);
return TRUE;
}
#endif
LOGD("Starting atspi bus launcher");
+
gboolean a11y_set = FALSE;
gboolean screen_reader_set = FALSE;
gint i;
_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->screen_reader.vconf_key[0] = VCONFKEY_SETAPPL_ACCESSIBILITY_TTS;
+ _global_app->screen_reader.number_of_keys = 1;
_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;
+ _global_app->universal_switch.vconf_key[0] = VCONFKEY_SETAPPL_ACCESSIBILITY_UNIVERSAL_SWITCH_CONFIGURATION_SERVICE;
+ _global_app->universal_switch.vconf_key[1] = VCONFKEY_SETAPPL_ACCESSIBILITY_UNIVERSAL_SWITCH_INTERACTION_SERVICE;
+ _global_app->universal_switch.number_of_keys = 2;
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]);
_global_app,
NULL);
- register_client (&_global_app->screen_reader);
- register_client (&_global_app->universal_switch);
+ 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