GDBusConnection *
_g_bus_get_priv (GBusType bus_type,
GCancellable *cancellable,
GError **error)
{
gchar *address;
GDBusConnection *ret;
ret = NULL;
address = g_dbus_address_get_for_bus_sync (bus_type, cancellable, error);
if (address == NULL)
goto out;
ret = g_dbus_connection_new_for_address_sync (address,
G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT |
G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION,
NULL, /* GDBusAuthObserver */
cancellable,
error);
g_free (address);
out:
return ret;
}
static void
print_address (void)
{
GError *error = NULL;
gchar *addr;
addr = g_dbus_address_get_for_bus_sync (G_BUS_TYPE_SESSION, NULL,
&error);
g_assert_no_error (error);
g_assert_nonnull (addr);
g_print ("%s\n", addr);
g_free (addr);
}
/**
* g_dbus_address_get_for_bus_sync:
* @bus_type: a #GBusType
* @cancellable: (allow-none): a #GCancellable or %NULL
* @error: return location for error or %NULL
*
* Synchronously looks up the D-Bus address for the well-known message
* bus instance specified by @bus_type. This may involve using various
* platform specific mechanisms.
*
* Returns: a valid D-Bus address string for @bus_type or %NULL if
* @error is set
*
* Since: 2.26
*/
gchar *
g_dbus_address_get_for_bus_sync (GBusType bus_type,
GCancellable *cancellable,
GError **error)
{
gchar *ret;
const gchar *starter_bus;
GError *local_error;
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
ret = NULL;
local_error = NULL;
if (G_UNLIKELY (_g_dbus_debug_address ()))
{
guint n;
_g_dbus_debug_print_lock ();
g_print ("GDBus-debug:Address: In g_dbus_address_get_for_bus_sync() for bus type '%s'\n",
_g_dbus_enum_to_string (G_TYPE_BUS_TYPE, bus_type));
for (n = 0; n < 3; n++)
{
const gchar *k;
const gchar *v;
switch (n)
{
case 0: k = "DBUS_SESSION_BUS_ADDRESS"; break;
case 1: k = "DBUS_SYSTEM_BUS_ADDRESS"; break;
case 2: k = "DBUS_STARTER_BUS_TYPE"; break;
default: g_assert_not_reached ();
}
v = g_getenv (k);
g_print ("GDBus-debug:Address: env var %s", k);
if (v != NULL)
g_print ("='%s'\n", v);
else
g_print (" is not set\n");
}
_g_dbus_debug_print_unlock ();
}
switch (bus_type)
{
case G_BUS_TYPE_SYSTEM:
ret = g_strdup (g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
if (ret == NULL)
{
ret = g_strdup ("unix:path=/var/run/dbus/system_bus_socket");
}
break;
case G_BUS_TYPE_SESSION:
ret = g_strdup (g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
if (ret == NULL)
{
ret = get_session_address_platform_specific (&local_error);
}
break;
case G_BUS_TYPE_STARTER:
starter_bus = g_getenv ("DBUS_STARTER_BUS_TYPE");
if (g_strcmp0 (starter_bus, "session") == 0)
{
ret = g_dbus_address_get_for_bus_sync (G_BUS_TYPE_SESSION, cancellable, &local_error);
goto out;
}
else if (g_strcmp0 (starter_bus, "system") == 0)
{
ret = g_dbus_address_get_for_bus_sync (G_BUS_TYPE_SYSTEM, cancellable, &local_error);
goto out;
}
else
{
if (starter_bus != NULL)
{
g_set_error (&local_error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
_("Cannot determine bus address from DBUS_STARTER_BUS_TYPE environment variable"
" - unknown value '%s'"),
starter_bus);
}
else
{
g_set_error_literal (&local_error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
_("Cannot determine bus address because the DBUS_STARTER_BUS_TYPE environment "
"variable is not set"));
}
}
break;
default:
g_set_error (&local_error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
_("Unknown bus type %d"),
bus_type);
break;
}
out:
if (G_UNLIKELY (_g_dbus_debug_address ()))
{
_g_dbus_debug_print_lock ();
if (ret != NULL)
{
g_print ("GDBus-debug:Address: Returning address '%s' for bus type '%s'\n",
ret,
_g_dbus_enum_to_string (G_TYPE_BUS_TYPE, bus_type));
}
else
{
g_print ("GDBus-debug:Address: Cannot look-up address bus type '%s': %s\n",
_g_dbus_enum_to_string (G_TYPE_BUS_TYPE, bus_type),
local_error ? local_error->message : "");
}
_g_dbus_debug_print_unlock ();
}
if (local_error != NULL)
g_propagate_error (error, local_error);
return ret;
}
/**
* g_dbus_address_get_for_bus_sync:
* @bus_type: A #GBusType.
* @cancellable: A #GCancellable or %NULL.
* @error: Return location for error or %NULL.
*
* Synchronously looks up the D-Bus address for the well-known message
* bus instance specified by @bus_type. This may involve using various
* platform specific mechanisms.
*
* Returns: A valid D-Bus address string for @bus_type or %NULL if @error is set.
*
* Since: 2.26
*/
gchar *
g_dbus_address_get_for_bus_sync (GBusType bus_type,
GCancellable *cancellable,
GError **error)
{
gchar *ret;
const gchar *starter_bus;
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
ret = NULL;
switch (bus_type)
{
case G_BUS_TYPE_SYSTEM:
ret = g_strdup (g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
if (ret == NULL)
{
ret = g_strdup ("unix:path=/var/run/dbus/system_bus_socket");
}
break;
case G_BUS_TYPE_SESSION:
ret = g_strdup (g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
if (ret == NULL)
{
ret = get_session_address_platform_specific ();
if (ret == NULL)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
_("Cannot determine session bus address (TODO: run dbus-launch to find out)"));
}
}
break;
case G_BUS_TYPE_STARTER:
starter_bus = g_getenv ("DBUS_STARTER_BUS_TYPE");
if (g_strcmp0 (starter_bus, "session") == 0)
{
ret = g_dbus_address_get_for_bus_sync (G_BUS_TYPE_SESSION, cancellable, error);
goto out;
}
else if (g_strcmp0 (starter_bus, "system") == 0)
{
ret = g_dbus_address_get_for_bus_sync (G_BUS_TYPE_SYSTEM, cancellable, error);
goto out;
}
else
{
if (starter_bus != NULL)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
_("Cannot determine bus address from DBUS_STARTER_BUS_TYPE environment variable"
" - unknown value `%s'"),
starter_bus);
}
else
{
g_set_error_literal (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
_("Cannot determine bus address because the DBUS_STARTER_BUS_TYPE environment "
"variable is not set"));
}
}
break;
default:
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
_("Unknown bus type %d"),
bus_type);
break;
}
out:
return ret;
}
