497 lines
15 KiB
C
497 lines
15 KiB
C
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is libguac-client-rdp.
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*
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* The Initial Developer of the Original Code is
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* Michael Jumper.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Matt Hortman
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include <pthread.h>
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#include <freerdp/freerdp.h>
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#ifdef ENABLE_WINPR
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#include <winpr/wtypes.h>
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#else
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#include "compat/winpr-wtypes.h"
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#endif
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#include <guacamole/client.h>
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#include "client.h"
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#include "rdp_bitmap.h"
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guac_transfer_function guac_rdp_rop3_transfer_function(guac_client* client,
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int rop3) {
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/* Translate supported ROP3 opcodes into composite modes */
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switch (rop3) {
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/* "DSon" !(src | dest) */
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case 0x11: return GUAC_TRANSFER_BINARY_NOR;
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/* "DSna" !src & dest */
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case 0x22: return GUAC_TRANSFER_BINARY_NSRC_AND;
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/* "Sn" !src */
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case 0x33: return GUAC_TRANSFER_BINARY_NSRC;
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/* "SDna" (src & !dest) */
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case 0x44: return GUAC_TRANSFER_BINARY_NDEST_AND;
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/* "Dn" !dest */
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case 0x55: return GUAC_TRANSFER_BINARY_NDEST;
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/* "SRCINVERT" (src ^ dest) */
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case 0x66: return GUAC_TRANSFER_BINARY_XOR;
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/* "DSan" !(src & dest) */
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case 0x77: return GUAC_TRANSFER_BINARY_NAND;
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/* "SRCAND" (src & dest) */
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case 0x88: return GUAC_TRANSFER_BINARY_AND;
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/* "DSxn" !(src ^ dest) */
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case 0x99: return GUAC_TRANSFER_BINARY_XNOR;
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/* "MERGEPAINT" (!src | dest)*/
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case 0xBB: return GUAC_TRANSFER_BINARY_NSRC_OR;
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/* "SDno" (src | !dest) */
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case 0xDD: return GUAC_TRANSFER_BINARY_NDEST_OR;
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/* "SRCPAINT" (src | dest) */
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case 0xEE: return GUAC_TRANSFER_BINARY_OR;
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/* 0x00 = "BLACKNESS" (0) */
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/* 0xAA = "NOP" (dest) */
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/* 0xCC = "SRCCOPY" (src) */
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/* 0xFF = "WHITENESS" (1) */
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}
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/* Log warning if ROP3 opcode not supported */
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guac_client_log_info (client, "guac_rdp_rop3_transfer_function: "
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"UNSUPPORTED opcode = 0x%02X", rop3);
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/* Default to BINARY_SRC */
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return GUAC_TRANSFER_BINARY_SRC;
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}
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void guac_rdp_gdi_dstblt(rdpContext* context, DSTBLT_ORDER* dstblt) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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const guac_layer* current_layer = ((rdp_guac_client_data*) client->data)->current_surface;
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int x = dstblt->nLeftRect;
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int y = dstblt->nTopRect;
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int w = dstblt->nWidth;
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int h = dstblt->nHeight;
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/* Clip operation to bounds */
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rdp_guac_client_data* data = (rdp_guac_client_data*) client->data;
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if (guac_rdp_clip_rect(data, &x, &y, &w, &h))
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return;
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switch (dstblt->bRop) {
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/* Blackness */
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case 0:
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/* Send black rectangle */
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guac_protocol_send_rect(client->socket, current_layer, x, y, w, h);
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guac_protocol_send_cfill(client->socket,
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GUAC_COMP_OVER, current_layer,
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0, 0, 0, 255);
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break;
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/* DSTINVERT */
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case 0x55:
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/* Invert */
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guac_protocol_send_transfer(client->socket,
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current_layer, x, y, w, h,
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GUAC_TRANSFER_BINARY_NDEST,
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current_layer, x, y);
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break;
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/* NOP */
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case 0xAA:
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break;
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/* Whiteness */
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case 0xFF:
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guac_protocol_send_rect(client->socket, current_layer, x, y, w, h);
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guac_protocol_send_cfill(client->socket,
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GUAC_COMP_OVER, current_layer,
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0xFF, 0xFF, 0xFF, 0xFF);
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break;
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/* Unsupported ROP3 */
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default:
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guac_client_log_info(client,
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"guac_rdp_gdi_dstblt(rop3=0x%x)", dstblt->bRop);
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}
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}
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void guac_rdp_gdi_patblt(rdpContext* context, PATBLT_ORDER* patblt) {
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/*
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* Note that this is not a full implementation of PATBLT. This is a
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* fallback implementation which only renders a solid block of background
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* color using the specified ROP3 operation, ignoring whatever brush
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* was actually specified.
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*
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* As libguac-client-rdp explicitly tells the server not to send PATBLT,
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* well-behaved RDP servers will not use this operation at all, while
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* others will at least have a fallback.
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*/
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/* Get client and current layer */
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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const guac_layer* current_layer =
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((rdp_guac_client_data*) client->data)->current_surface;
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int x = patblt->nLeftRect;
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int y = patblt->nTopRect;
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int w = patblt->nWidth;
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int h = patblt->nHeight;
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rdp_guac_client_data* data = (rdp_guac_client_data*) client->data;
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/* Layer for actual transfer */
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guac_layer* buffer;
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/*
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* Warn that rendering is a fallback, as the server should not be sending
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* this order.
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*/
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guac_client_log_info(client, "Using fallback PATBLT (server is ignoring "
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"negotiated client capabilities)");
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/* Clip operation to bounds */
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if (guac_rdp_clip_rect(data, &x, &y, &w, &h))
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return;
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/* Render rectangle based on ROP */
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switch (patblt->bRop) {
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/* If blackness, send black rectangle */
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case 0x00:
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guac_protocol_send_rect(client->socket, current_layer, x, y, w, h);
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guac_protocol_send_cfill(client->socket,
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GUAC_COMP_OVER, current_layer,
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0x00, 0x00, 0x00, 0xFF);
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break;
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/* If NOP, do nothing */
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case 0xAA:
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break;
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/* If operation is just a copy, send foreground only */
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case 0xCC:
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case 0xF0:
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guac_protocol_send_rect(client->socket, current_layer, x, y, w, h);
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guac_protocol_send_cfill(client->socket,
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GUAC_COMP_OVER, current_layer,
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(patblt->foreColor >> 16) & 0xFF,
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(patblt->foreColor >> 8 ) & 0xFF,
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(patblt->foreColor ) & 0xFF,
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0xFF);
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break;
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/* If whiteness, send white rectangle */
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case 0xFF:
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guac_protocol_send_rect(client->socket, current_layer, x, y, w, h);
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guac_protocol_send_cfill(client->socket,
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GUAC_COMP_OVER, current_layer,
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0xFF, 0xFF, 0xFF, 0xFF);
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break;
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/* Otherwise, invert entire rect */
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default:
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/* Allocate buffer for transfer */
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buffer = guac_client_alloc_buffer(client);
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/* Send rectangle stroke */
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guac_protocol_send_rect(client->socket, buffer,
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0, 0, w, h);
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/* Fill rectangle with fore color only */
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guac_protocol_send_cfill(client->socket, GUAC_COMP_OVER, buffer,
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0xFF, 0xFF, 0xFF, 0xFF);
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/* Transfer */
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guac_protocol_send_transfer(client->socket,
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/* ... from buffer */
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buffer, 0, 0, w, h,
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/* ... inverting */
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GUAC_TRANSFER_BINARY_XOR,
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/* ... to current layer */
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current_layer, x, y);
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/* Done with buffer */
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guac_client_free_buffer(client, buffer);
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}
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}
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void guac_rdp_gdi_scrblt(rdpContext* context, SCRBLT_ORDER* scrblt) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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const guac_layer* current_layer = ((rdp_guac_client_data*) client->data)->current_surface;
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int x = scrblt->nLeftRect;
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int y = scrblt->nTopRect;
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int w = scrblt->nWidth;
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int h = scrblt->nHeight;
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int x_src = scrblt->nXSrc;
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int y_src = scrblt->nYSrc;
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/* Clip operation to bounds */
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rdp_guac_client_data* data = (rdp_guac_client_data*) client->data;
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if (guac_rdp_clip_rect(data, &x, &y, &w, &h))
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return;
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/* Update source coordinates */
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x_src += x - scrblt->nLeftRect;
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y_src += y - scrblt->nTopRect;
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/* Copy screen rect to current surface */
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guac_protocol_send_copy(client->socket,
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GUAC_DEFAULT_LAYER, x_src, y_src, w, h,
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GUAC_COMP_OVER, current_layer, x, y);
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}
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void guac_rdp_gdi_memblt(rdpContext* context, MEMBLT_ORDER* memblt) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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const guac_layer* current_layer = ((rdp_guac_client_data*) client->data)->current_surface;
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guac_socket* socket = client->socket;
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guac_rdp_bitmap* bitmap = (guac_rdp_bitmap*) memblt->bitmap;
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int x = memblt->nLeftRect;
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int y = memblt->nTopRect;
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int w = memblt->nWidth;
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int h = memblt->nHeight;
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int x_src = memblt->nXSrc;
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int y_src = memblt->nYSrc;
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rdp_guac_client_data* data = (rdp_guac_client_data*) client->data;
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/* Make sure that the recieved bitmap is not NULL before processing */
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if (bitmap == NULL) {
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guac_client_log_info(client, "NULL bitmap found in memblt instruction.");
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return;
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}
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/* Clip operation to bounds */
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if (guac_rdp_clip_rect(data, &x, &y, &w, &h))
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return;
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/* Update source coordinates */
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x_src += x - memblt->nLeftRect;
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y_src += y - memblt->nTopRect;
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switch (memblt->bRop) {
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/* If blackness, send black rectangle */
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case 0x00:
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guac_protocol_send_rect(client->socket, current_layer, x, y, w, h);
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guac_protocol_send_cfill(client->socket,
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GUAC_COMP_OVER, current_layer,
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0x00, 0x00, 0x00, 0xFF);
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break;
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/* If NOP, do nothing */
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case 0xAA:
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break;
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/* If operation is just SRC, simply copy */
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case 0xCC:
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/* If not cached, cache if necessary */
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if (((guac_rdp_bitmap*) bitmap)->layer == NULL
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&& ((guac_rdp_bitmap*) bitmap)->used >= 1)
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guac_rdp_cache_bitmap(context, memblt->bitmap);
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/* If not cached, send as PNG */
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if (bitmap->layer == NULL) {
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if (memblt->bitmap->data != NULL) {
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/* Create surface from image data */
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cairo_surface_t* surface = cairo_image_surface_create_for_data(
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memblt->bitmap->data + 4*(x_src + y_src*memblt->bitmap->width),
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CAIRO_FORMAT_RGB24, w, h, 4*memblt->bitmap->width);
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/* Send surface to buffer */
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guac_protocol_send_png(socket,
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GUAC_COMP_OVER, current_layer,
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x, y, surface);
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/* Free surface */
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cairo_surface_destroy(surface);
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}
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}
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/* Otherwise, copy */
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else
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guac_protocol_send_copy(socket,
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bitmap->layer, x_src, y_src, w, h,
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GUAC_COMP_OVER, current_layer, x, y);
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/* Increment usage counter */
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((guac_rdp_bitmap*) bitmap)->used++;
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break;
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/* If whiteness, send white rectangle */
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case 0xFF:
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guac_protocol_send_rect(client->socket, current_layer, x, y, w, h);
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guac_protocol_send_cfill(client->socket,
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GUAC_COMP_OVER, current_layer,
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0xFF, 0xFF, 0xFF, 0xFF);
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break;
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/* Otherwise, use transfer */
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default:
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/* If not available as a surface, make available. */
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if (bitmap->layer == NULL)
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guac_rdp_cache_bitmap(context, memblt->bitmap);
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guac_protocol_send_transfer(socket,
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bitmap->layer, x_src, y_src, w, h,
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guac_rdp_rop3_transfer_function(client, memblt->bRop),
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current_layer, x, y);
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/* Increment usage counter */
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((guac_rdp_bitmap*) bitmap)->used++;
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}
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}
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void guac_rdp_gdi_opaquerect(rdpContext* context, OPAQUE_RECT_ORDER* opaque_rect) {
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/* Get client data */
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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rdp_guac_client_data* client_data = (rdp_guac_client_data*) client->data;
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UINT32 color = freerdp_color_convert_var(opaque_rect->color,
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client_data->settings.color_depth, 32,
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((rdp_freerdp_context*) context)->clrconv);
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const guac_layer* current_layer = ((rdp_guac_client_data*) client->data)->current_surface;
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rdp_guac_client_data* data = (rdp_guac_client_data*) client->data;
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int x = opaque_rect->nLeftRect;
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int y = opaque_rect->nTopRect;
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int w = opaque_rect->nWidth;
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int h = opaque_rect->nHeight;
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/* Clip operation to bounds */
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if (guac_rdp_clip_rect(data, &x, &y, &w, &h))
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return;
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guac_protocol_send_rect(client->socket, current_layer, x, y, w, h);
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guac_protocol_send_cfill(client->socket,
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GUAC_COMP_OVER, current_layer,
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(color >> 16) & 0xFF,
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(color >> 8 ) & 0xFF,
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(color ) & 0xFF,
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255);
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}
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void guac_rdp_gdi_palette_update(rdpContext* context, PALETTE_UPDATE* palette) {
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CLRCONV* clrconv = ((rdp_freerdp_context*) context)->clrconv;
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clrconv->palette->count = palette->number;
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#ifdef LEGACY_RDPPALETTE
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clrconv->palette->entries = palette->entries;
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#else
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memcpy(clrconv->palette->entries, palette->entries, sizeof(palette->entries));
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#endif
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}
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void guac_rdp_gdi_set_bounds(rdpContext* context, rdpBounds* bounds) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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rdp_guac_client_data* data = (rdp_guac_client_data*) client->data;
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/* If no bounds given, clear bounding rect */
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if (bounds == NULL)
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data->bounded = FALSE;
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/* Otherwise, set bounding rectangle */
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else {
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data->bounded = TRUE;
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data->bounds_left = bounds->left;
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data->bounds_top = bounds->top;
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data->bounds_right = bounds->right;
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data->bounds_bottom = bounds->bottom;
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}
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}
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void guac_rdp_gdi_end_paint(rdpContext* context) {
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/* IGNORE */
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}
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