static UINT guac_rdp_rail_complete_handshake()

in src/protocols/rdp/channels/rail.c [72:169]

• 68 lines of code
• 4 McCabe index (conditional complexity)

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 */
    pthread_mutex_lock(&(rdp_client->message_lock));
    status = rail->ClientHandshake(rail, &handshake);
    pthread_mutex_unlock(&(rdp_client->message_lock));

    if (status != CHANNEL_RC_OK)
        return status;

    RAIL_CLIENT_STATUS_ORDER client_status = {
        .flags = 0x00
    };

    /* Send client status */
    pthread_mutex_lock(&(rdp_client->message_lock));
    status = rail->ClientInformation(rail, &client_status);
    pthread_mutex_unlock(&(rdp_client->message_lock));

    if (status != CHANNEL_RC_OK)
        return status;

    RAIL_SYSPARAM_ORDER sysparam = {

        .dragFullWindows = FALSE,

        .highContrast = {
            .flags =
                  HCF_AVAILABLE
                | HCF_CONFIRMHOTKEY
                | HCF_HOTKEYACTIVE
                | HCF_HOTKEYAVAILABLE
                | HCF_HOTKEYSOUND
                | HCF_INDICATOR,
            .colorScheme = {
                .string = NULL,
                .length = 0
            }
        },

        .keyboardCues = FALSE,
        .keyboardPref = FALSE,
        .mouseButtonSwap = FALSE,

        .workArea = {
            .left   = 0,
            .top    = 0,
            .right  = rdp_client->settings->width,
            .bottom = rdp_client->settings->height
        },

        .params =
              SPI_MASK_SET_DRAG_FULL_WINDOWS
            | SPI_MASK_SET_HIGH_CONTRAST
            | SPI_MASK_SET_KEYBOARD_CUES
            | SPI_MASK_SET_KEYBOARD_PREF
            | SPI_MASK_SET_MOUSE_BUTTON_SWAP
            | SPI_MASK_SET_WORK_AREA

    };

    /* Send client system parameters */
    pthread_mutex_lock(&(rdp_client->message_lock));
    status = rail->ClientSystemParam(rail, &sysparam);
    pthread_mutex_unlock(&(rdp_client->message_lock));

    if (status != CHANNEL_RC_OK)
        return status;

    RAIL_EXEC_ORDER exec = {
        .flags = RAIL_EXEC_FLAG_EXPAND_ARGUMENTS,
        .RemoteApplicationProgram = rdp_client->settings->remote_app,
        .RemoteApplicationWorkingDir = rdp_client->settings->remote_app_dir,
        .RemoteApplicationArguments = rdp_client->settings->remote_app_args,
    };

    /* Execute desired RemoteApp command */
    pthread_mutex_lock(&(rdp_client->message_lock));
    status = rail->ClientExecute(rail, &exec);
    pthread_mutex_unlock(&(rdp_client->message_lock));

    return status;

}