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GUACAMOLE-978: Respond to Handshake/HandshakeEx PDU received via RAIL with client Handshake PDU.

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This commit is contained in:
Michael Jumper 2020-03-02 14:15:27 -08:00
parent 4b4b11da57
commit 789463ce76
1 changed files with 24 additions and 6 deletions
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30
src/protocols/rdp/channels/rail.c
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@ -48,12 +48,14 @@
#endif
/**
* Completes initialization of the RemoteApp session, sending client system
* parameters and executing the desired RemoteApp command using the Client
* System Parameters Update PDU and Client Execute PDU respectively. These PDUs
* MUST be sent for the desired RemoteApp to run, and MUST NOT be sent until
* after a Handshake or HandshakeEx PDU has been received. See:
* Completes initialization of the RemoteApp session, responding to the server
* handshake, sending client system parameters, and executing the desired
* RemoteApp command. This is accomplished using the Handshake PDU, Client
* System Parameters Update PDU, and Client Execute PDU respectively. These
* PDUs MUST be sent for the desired RemoteApp to run, and MUST NOT be sent
* until after a Handshake or HandshakeEx PDU has been received. See:
*
* https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rdperp/cec4eb83-b304-43c9-8378-b5b8f5e7082a (Handshake PDU)
* https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rdperp/60344497-883f-4711-8b9a-828d1c580195 (System Parameters Update PDU)
* https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rdperp/98a6e3c3-c2a9-42cc-ad91-0d9a6c211138 (Client Execute PDU)
*
@ -67,9 +69,25 @@
*/
static UINT guac_rdp_rail_complete_handshake(RailClientContext* rail) {
UINT status;
guac_client* client = (guac_client*) rail->custom;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
RAIL_HANDSHAKE_ORDER handshake = {
/* Build number 7600 (0x1DB0) apparently represents Windows 7 and
* compatibility with RDP 7.0. As of this writing, this is the same
* build number sent for RAIL connections by xfreerdp. */
.buildNumber = 7600
};
/* Send client handshake response */
status = rail->ClientHandshake(rail, &handshake);
if (status != CHANNEL_RC_OK)
return status;
RAIL_SYSPARAM_ORDER sysparam = {
.workArea = {
.left = 0,
@ -81,7 +99,7 @@ static UINT guac_rdp_rail_complete_handshake(RailClientContext* rail) {
};
/* Send client system parameters */
UINT status = rail->ClientSystemParam(rail, &sysparam);
status = rail->ClientSystemParam(rail, &sysparam);
if (status != CHANNEL_RC_OK)
return status;