* Boston, MA 02111-1307, USA.
*/
+#define _GNU_SOURCE
#include "config.h"
#include "dbus/dbus-glib-lowlevel.h"
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
+#include<sys/stat.h>
#include <atk/atk.h>
#include <droute/droute.h>
+#include <gmodule.h>
+#include <glib/gi18n.h>
#include "bridge.h"
#include "event.h"
#include "adaptors.h"
#include "object.h"
+#include "common/spi-stateset.h"
#include "accessible-register.h"
#include "accessible-leasing.h"
bridge_display = XOpenDisplay (spi_display_name ());
if (!bridge_display)
- g_error ("AT_SPI: Could not get the display\n");
+ {
+ g_warning ("AT_SPI: Could not get the display\n");
+ return NULL;
+ }
AT_SPI_BUS = XInternAtom (bridge_display, "AT_SPI_BUS", False);
XGetWindowProperty (bridge_display,
(long) BUFSIZ, False,
(Atom) 31, &actual_type, &actual_format,
&nitems, &leftover, &data);
+ XCloseDisplay (bridge_display);
dbus_error_init (&error);
("AT-SPI: Accessibility bus not found - Using session bus.\n");
bus = dbus_bus_get (DBUS_BUS_SESSION, &error);
if (!bus)
- g_error ("AT-SPI: Couldn't connect to bus: %s\n", error.message);
+ {
+ g_warning ("AT-SPI: Couldn't connect to bus: %s\n", error.message);
+ return NULL;
+ }
}
else
{
bus = dbus_connection_open (data, &error);
+ XFree (data);
if (!bus)
{
- g_error ("AT-SPI: Couldn't connect to bus: %s\n", error.message);
+ g_warning ("AT-SPI: Couldn't connect to bus: %s\n", error.message);
+ return NULL;
}
else
{
if (!dbus_bus_register (bus, &error))
- g_error ("AT-SPI: Couldn't register with bus: %s\n", error.message);
+ {
+ g_warning ("AT-SPI: Couldn't register with bus: %s\n", error.message);
+ return NULL;
+ }
+ dbus_connection_set_exit_on_disconnect (bus, FALSE);
}
}
void **replyptr = (void **)user_data;
*replyptr = dbus_pending_call_steal_reply (pending);
+ dbus_pending_call_unref (pending);
+}
+
+/*---------------------------------------------------------------------------*/
+
+static void
+add_event (const char *bus_name, const char *event)
+{
+ event_data *evdata;
+ gchar **data;
+ GList *new_list;
+
+ evdata = (event_data *) g_malloc (sizeof (*evdata));
+ if (!evdata)
+ return;
+ data = g_strsplit (event, ":", 3);
+ if (!data)
+ {
+ g_free (evdata);
+ return;
+ }
+ evdata->bus_name = g_strdup (bus_name);
+ evdata->data = data;
+ new_list = g_list_append (spi_global_app_data->events, evdata);
+ if (new_list)
+ spi_global_app_data->events = new_list;
}
-static DBusMessage *
-send_and_allow_reentry (DBusConnection *bus, DBusMessage *message, DBusError *error)
+static void
+get_registered_event_listeners (SpiBridge *app)
{
- DBusPendingCall *pending;
- DBusMessage *reply = NULL;
+ DBusMessage *message, *reply;
+ DBusMessageIter iter, iter_array, iter_struct;
- if (!dbus_connection_send_with_reply (bus, message, &pending, -1))
+ message = dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
+ SPI_DBUS_PATH_REGISTRY,
+ SPI_DBUS_INTERFACE_REGISTRY,
+ "GetRegisteredEvents");
+ spi_global_app_data->events_initialized = TRUE;
+ if (!message)
+ return;
+
+ reply = dbus_connection_send_with_reply_and_block (app->bus, message, 5000, NULL);
+ dbus_message_unref (message);
+ if (!reply)
+ return;
+ if (strcmp (dbus_message_get_signature (reply), "a(ss)") != 0)
{
- return NULL;
+ /* TODO: Add a warning when it's okay to add strings */
+ dbus_message_unref (reply);
+ return;
}
- dbus_pending_call_set_notify (pending, set_reply, (void *)&reply, NULL);
- while (!reply)
+ dbus_message_iter_init (reply, &iter);
+ dbus_message_iter_recurse (&iter, &iter_array);
+ while (dbus_message_iter_get_arg_type (&iter_array) != DBUS_TYPE_INVALID)
{
- if (!dbus_connection_read_write_dispatch (bus, -1)) return NULL;
+ char *bus_name, *event;
+ dbus_message_iter_recurse (&iter_array, &iter_struct);
+ dbus_message_iter_get_basic (&iter_struct, &bus_name);
+ dbus_message_iter_next (&iter_struct);
+ dbus_message_iter_get_basic (&iter_struct, &event);
+ add_event (bus_name, event);
+ dbus_message_iter_next (&iter_array);
}
- return reply;
+ dbus_message_unref (reply);
+}
+
+static void
+register_reply (DBusPendingCall *pending, void *user_data)
+{
+ DBusMessage *reply;
+ SpiBridge *app = user_data;
+ DBusMessage *message;
+
+ reply = dbus_pending_call_steal_reply (pending);
+ dbus_pending_call_unref (pending);
+ if (reply)
+ {
+ gchar *app_name, *obj_path;
+
+ if (strcmp (dbus_message_get_signature (reply), "(so)") != 0)
+ {
+ g_warning ("AT-SPI: Could not obtain desktop path or name\n");
+ }
+ else
+ {
+ DBusMessageIter iter, iter_struct;
+ dbus_message_iter_init (reply, &iter);
+ dbus_message_iter_recurse (&iter, &iter_struct);
+ dbus_message_iter_get_basic (&iter_struct, &app_name);
+ dbus_message_iter_next (&iter_struct);
+ dbus_message_iter_get_basic (&iter_struct, &obj_path);
+
+ app->desktop_name = g_strdup (app_name);
+ app->desktop_path = g_strdup (obj_path);
+ }
+ }
+ else
+ {
+ g_warning ("AT-SPI: Could not embed inside desktop");
+ return;
+ }
+ dbus_message_unref (reply);
+
+ get_registered_event_listeners (spi_global_app_data);
}
-/*---------------------------------------------------------------------------*/
static gboolean
register_application (SpiBridge * app)
DBusMessage *message, *reply;
DBusMessageIter iter;
DBusError error;
+ DBusPendingCall *pending;
+ const int max_addr_length = 128; /* should be long enough */
dbus_error_init (&error);
+ /* These will be overridden when we get a reply, but in practice these
+ defaults should always be correct */
+ app->desktop_name = SPI_DBUS_NAME_REGISTRY;
+ app->desktop_path = SPI_DBUS_PATH_ROOT;
+
message = dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
SPI_DBUS_PATH_ROOT,
SPI_DBUS_INTERFACE_SOCKET,
dbus_message_iter_init_append (message, &iter);
spi_object_append_reference (&iter, app->root);
- reply = send_and_allow_reentry (app->bus, message, &error);
+ if (!dbus_connection_send_with_reply (app->bus, message, &pending, -1)
+ || !pending)
+ {
+ return FALSE;
+ }
+
+ dbus_pending_call_set_notify (pending, register_reply, app, NULL);
if (message)
dbus_message_unref (message);
- if (reply)
- {
- DBusMessageIter iter, iter_struct;
- gchar *app_name, *obj_path;
-
- if (strcmp (dbus_message_get_signature (reply), "(so)") != 0)
- {
- g_warning ("AT-SPI: Could not obtain desktop path or name\n");
- return FALSE;
- }
-
- dbus_message_iter_init (reply, &iter);
- dbus_message_iter_recurse (&iter, &iter_struct);
- dbus_message_iter_get_basic (&iter_struct, &app_name);
- dbus_message_iter_next (&iter_struct);
- dbus_message_iter_get_basic (&iter_struct, &obj_path);
+ /* could this be better, we accept some amount of race in getting the temp name*/
+ /* make sure the directory exists */
+ mkdir ("/tmp/at-spi2/", S_IRWXU|S_IRWXG|S_IRWXO|S_ISVTX);
+ chmod ("/tmp/at-spi2/", S_IRWXU|S_IRWXG|S_IRWXO|S_ISVTX);
+ app->app_bus_addr = g_malloc(max_addr_length * sizeof(char));
+#ifndef DISABLE_P2P
+ sprintf (app->app_bus_addr, "unix:path=/tmp/at-spi2/socket-%d-%d", getpid(),
+ rand());
+#else
+ app->app_bus_addr [0] = '\0';
+#endif
- app->desktop_name = g_strdup (app_name);
- app->desktop_path = g_strdup (obj_path);
- }
- else
- {
- g_warning ("AT-SPI: Could not embed inside desktop: %s\n", error.message);
- return FALSE;
- }
return TRUE;
}
socket_class->embed = socket_embed_hook;
}
+static uint
+get_ancestral_uid (uint pid)
+{
+ FILE *fp;
+ char buf [80];
+ int ppid = 0;
+ int uid = 0;
+ gboolean got_ppid = 0;
+ gboolean got_uid = 0;
+
+ sprintf (buf, "/proc/%d/status", pid);
+ fp = fopen (buf, "r");
+ if (!fp)
+ return 0;
+ while ((!got_ppid || !got_uid) && fgets (buf, sizeof (buf), fp))
+ {
+ if (sscanf (buf, "PPid:\t%d", &ppid) == 1)
+ got_ppid = TRUE;
+ else if (sscanf (buf, "Uid:\t%d", &uid) == 1)
+ got_uid = TRUE;
+ }
+ fclose (fp);
+
+ if (!got_ppid || !got_uid)
+ return 0;
+ if (uid != 0)
+ return uid;
+ if (ppid == 0 || ppid == 1)
+ return 0;
+ return get_ancestral_uid (ppid);
+}
+
+static dbus_bool_t
+user_check (DBusConnection *bus, unsigned long uid)
+{
+ if (uid == getuid () || uid == geteuid ())
+ return TRUE;
+ if (getuid () == 0)
+ return get_ancestral_uid (getpid ()) == uid;
+ return FALSE;
+}
+
+static void
+new_connection_cb (DBusServer *server, DBusConnection *con, void *data)
+{
+ GList *new_list;
+
+ dbus_connection_set_unix_user_function (con, user_check, NULL, NULL);
+ dbus_connection_ref(con);
+ dbus_connection_setup_with_g_main(con, NULL);
+ droute_intercept_dbus (con);
+ droute_context_register (spi_global_app_data->droute, con);
+
+ new_list = g_list_append (spi_global_app_data->direct_connections, con);
+ if (new_list)
+ spi_global_app_data->direct_connections = new_list;
+}
+
+static int
+setup_bus (void)
+{
+#ifndef DISABLE_P2P
+ DBusServer *server;
+ DBusError err;
+
+ dbus_error_init(&err);
+ server = dbus_server_listen(spi_global_app_data->app_bus_addr, &err);
+ if (server == NULL)
+ {
+ g_warning (_("atk-bridge: Couldn't listen on dbus server: %s"), err.message);
+ dbus_error_init (&err);
+ spi_global_app_data->app_bus_addr [0] = '\0';
+ g_main_context_unref (spi_global_app_data->main_context);
+ spi_global_app_data->main_context = NULL;
+ return -1;
+ }
+
+ dbus_server_setup_with_g_main(server, NULL);
+ dbus_server_set_new_connection_function(server, new_connection_cb, NULL, NULL);
+
+ spi_global_app_data->server = server;
+#endif
+
+ return 0;
+}
+
+
gchar *atspi_dbus_name = NULL;
static gboolean atspi_no_register = FALSE;
};
static gchar *
-introspect_children_cb (char *path, void *data)
+introspect_children_cb (const char *path, void *data)
{
if (!strcmp (path, "/org/a11y/atspi/accessible"))
{
return NULL;
}
+static void
+handle_event_listener_registered (DBusConnection *bus, DBusMessage *message,
+ void *user_data)
+{
+ const char *name;
+ char *sender;
+
+ if (!dbus_message_get_args (message, NULL, DBUS_TYPE_STRING, &sender,
+ DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID))
+ return;
+
+ add_event (sender, name);
+}
+
+static void
+remove_events (const char *bus_name, const char *event)
+{
+ event_data *evdata;
+ gchar **remove_data;
+ GList *list;
+
+ remove_data = g_strsplit (event, ":", 3);
+ if (!remove_data)
+ {
+ return;
+ }
+
+ for (list = spi_global_app_data->events; list;)
+ {
+ event_data *evdata = list->data;
+ if (!g_strcmp0 (evdata->bus_name, bus_name) &&
+ spi_event_is_subtype (evdata->data, remove_data))
+ {
+ GList *events = spi_global_app_data->events;
+ list = list->next;
+ g_strfreev (evdata->data);
+ g_free (evdata->bus_name);
+ g_free (evdata);
+ spi_global_app_data->events = g_list_remove (events, evdata);
+ }
+ else
+ {
+ list = list->next;
+ }
+ }
+
+ g_strfreev (remove_data);
+}
+
+static void
+handle_event_listener_deregistered (DBusConnection *bus, DBusMessage *message,
+ void *user_data)
+{
+ const char *orig_name;
+ gchar *name;
+ char *sender;
+
+ if (!dbus_message_get_args (message, NULL, DBUS_TYPE_STRING, &sender,
+ DBUS_TYPE_STRING, &name, DBUS_TYPE_INVALID))
+ return;
+
+ remove_events (sender, name);
+}
+
+static DBusHandlerResult
+signal_filter (DBusConnection *bus, DBusMessage *message, void *user_data)
+{
+ const char *interface = dbus_message_get_interface (message);
+ const char *member = dbus_message_get_member (message);
+ DBusHandlerResult result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+
+ if (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_SIGNAL)
+ return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+
+ if (!strcmp (interface, SPI_DBUS_INTERFACE_REGISTRY))
+ {
+ result = DBUS_HANDLER_RESULT_HANDLED;
+ if (!strcmp (member, "EventListenerRegistered"))
+ handle_event_listener_registered (bus, message, user_data);
+ else if (!strcmp (member, "EventListenerDeregistered"))
+ handle_event_listener_deregistered (bus, message, user_data);
+ else
+ result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+ }
+ return result;
+}
+
/*
* spi_app_init
*
*
* - DRoute for routing message to their accessible objects.
* - Event handlers for emmitting signals on specific ATK events.
+ * - setup the bus for p2p communication
* - Application registration with the AT-SPI registry.
*
*/
GOptionContext *opt;
GError *err = NULL;
DBusError error;
- DBusConnection *bus;
AtkObject *root;
gchar *introspection_directory;
static gboolean inited = FALSE;
DRoutePath *treepath, *accpath;
root = atk_get_root ();
- g_return_val_if_fail (root, 0);
+ g_warn_if_fail (root);
+ if (!root)
+ {
+ inited = FALSE;
+ return -1;
+ }
/* Parse command line options */
opt = g_option_context_new (NULL);
g_option_context_set_ignore_unknown_options (opt, TRUE);
if (!g_option_context_parse (opt, argc, argv, &err))
g_warning ("AT-SPI Option parsing failed: %s\n", err->message);
+ g_option_context_free (opt);
/* Allocate global data and do ATK initializations */
spi_global_app_data = g_new0 (SpiBridge, 1);
{
g_free (spi_global_app_data);
spi_global_app_data = NULL;
- return 0;
+ inited = FALSE;
+ return -1;
}
if (atspi_dbus_name != NULL)
}
}
- dbus_connection_setup_with_g_main (spi_global_app_data->bus,
- g_main_context_default ());
+#ifndef DISABLE_P2P
+ spi_global_app_data->main_context = g_main_context_new ();
+#else
+ spi_global_app_data->main_context = NULL;
+#endif
+
+ dbus_connection_setup_with_g_main (spi_global_app_data->bus, NULL);
/* Hook our plug-and socket functions */
install_plug_hooks ();
/* Register droute for routing AT-SPI messages */
spi_global_app_data->droute =
- droute_new (spi_global_app_data->bus);
+ droute_new ();
treepath = droute_add_one (spi_global_app_data->droute,
"/org/a11y/atspi/cache", spi_global_cache);
if (!treepath)
{
g_warning ("atk-bridge: Error in droute_add_one(). Already running?");
- return 0;
+ return -1;
}
accpath = droute_add_many (spi_global_app_data->droute,
spi_initialize_text (accpath);
spi_initialize_value (accpath);
+ droute_context_register (spi_global_app_data->droute,
+ spi_global_app_data->bus);
+
/* Register methods to send D-Bus signals on certain ATK events */
spi_atk_register_event_listeners ();
+ /* Set up filter and match rules to catch signals */
+ dbus_bus_add_match (spi_global_app_data->bus, "type='signal', interface='org.a11y.atspi.Registry', sender='org.a11y.atspi.Registry'", NULL);
+ dbus_connection_add_filter (spi_global_app_data->bus, signal_filter, NULL,
+ NULL);
+
/* Register this app by sending a signal out to AT-SPI registry daemon */
if (!atspi_no_register && (!root || !ATK_IS_PLUG (root)))
register_application (spi_global_app_data);
+ else
+ get_registered_event_listeners (spi_global_app_data);
- g_atexit (exit_func);
+ setup_bus();
return 0;
}
return 0;
}
+gchar*
+g_module_check_init (GModule *module)
+{
+ g_module_make_resident (module);
+
+ return NULL;
+}
+
void
gnome_accessibility_module_init (void)
{