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backends: Ensure remote desktop dbus interface state

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Ensure that it does receive Start and Stop orderly, and error out
otherwise.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1258


(cherry picked from commit 283cccbe9f)
This commit is contained in:
Carlos Garnacho 2020-05-16 08:44:04 +00:00 committed by Jonas Ådahl
parent b1df6d08a5
commit fadfca2e16
1 changed files with 21 additions and 1 deletions
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22
src/backends/meta-remote-desktop-session.c
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@ -55,6 +55,7 @@ struct _MetaRemoteDesktopSession
MetaScreenCastSession *screen_cast_session;
gulong screen_cast_session_closed_handler_id;
guint started : 1;
ClutterVirtualInputDevice *virtual_pointer;
ClutterVirtualInputDevice *virtual_keyboard;
@ -119,7 +120,7 @@ meta_remote_desktop_session_start (MetaRemoteDesktopSession *session,
ClutterBackend *backend = clutter_get_default_backend ();
ClutterSeat *seat = clutter_backend_get_default_seat (backend);
g_assert (!session->virtual_pointer && !session->virtual_keyboard);
g_assert (!session->started);
if (session->screen_cast_session)
{
@ -135,6 +136,7 @@ meta_remote_desktop_session_start (MetaRemoteDesktopSession *session,
clutter_seat_create_virtual_device (seat, CLUTTER_TOUCHSCREEN_DEVICE);
init_remote_access_handle (session);
session->started = TRUE;
return TRUE;
}
@ -145,6 +147,8 @@ meta_remote_desktop_session_close (MetaRemoteDesktopSession *session)
MetaDBusRemoteDesktopSession *skeleton =
META_DBUS_REMOTE_DESKTOP_SESSION (session);
session->started = FALSE;
if (session->screen_cast_session)
{
g_clear_signal_handler (&session->screen_cast_session_closed_handler_id,
@ -256,6 +260,14 @@ handle_start (MetaDBusRemoteDesktopSession *skeleton,
MetaRemoteDesktopSession *session = META_REMOTE_DESKTOP_SESSION (skeleton);
GError *error = NULL;
if (session->started)
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Already started");
return TRUE;
}
if (!check_permission (session, invocation))
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
@ -288,6 +300,14 @@ handle_stop (MetaDBusRemoteDesktopSession *skeleton,
{
MetaRemoteDesktopSession *session = META_REMOTE_DESKTOP_SESSION (skeleton);
if (!session->started)
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Session not started");
return TRUE;
}
if (!check_permission (session, invocation))
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,