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GUACAMOLE-249: Push FreeRDP settings in preconnect hander (OrderSupport is reset otherwise).

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We set the values within the OrderSupport array to match which RDP
messages we have implemented within guac_rdp_push_settings(). This array
is reset to its default values prior to the preconnect handler being
invoked, thus guac_rdp_push_settings() MUST be invoked within the
preconnect handler for its settings to have the intended effect.

Without proper values within OrderSupport, the initial RDP negotiation
process will claim support for messages that we don't actually support,
resulting in graphical artifacts and unexpected behavior.
This commit is contained in:
Michael Jumper 2019-12-31 16:23:28 -08:00
parent 7ef1dcafba
commit d7151e0d84
1 changed files with 3 additions and 3 deletions
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6
src/protocols/rdp/rdp.c
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@ -87,6 +87,9 @@ BOOL rdp_freerdp_pre_connect(freerdp* instance) {
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
guac_rdp_settings* settings = rdp_client->settings;
/* Push desired settings to FreeRDP */
guac_rdp_push_settings(client, settings, instance);
/* Init FreeRDP add-in provider */
freerdp_register_addin_provider(freerdp_channels_load_static_addin_entry, 0);
@ -380,9 +383,6 @@ static int guac_rdp_handle_connection(guac_client* client) {
/* Set default pointer */
guac_common_cursor_set_pointer(rdp_client->display->cursor);
/* Push desired settings to FreeRDP */
guac_rdp_push_settings(client, settings, rdp_inst);
/* Connect to RDP server */
if (!freerdp_connect(rdp_inst)) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_NOT_FOUND,