mirror of
https://github.com/gyurix1968/guacamole-client.git
synced 2025-09-06 05:07:41 +00:00
300 lines
8.2 KiB
C
300 lines
8.2 KiB
C
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/*
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* Guacamole - Clientless Remote Desktop
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* Copyright (C) 2010 Michael Jumper
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <png.h>
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#include <rfb/rfbclient.h>
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#include "guacio.h"
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#include "protocol.h"
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#include "client.h"
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char __guac_password[] = "potato";
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char* __GUAC_VNC_TAG_IO = "GUACIO";
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char* __GUAC_VNC_TAG_PNG_BUFFER = "PNG_BUFFER";
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char* __GUAC_VNC_TAG_PNG_BUFFER_ALPHA = "PNG_BUFFER_ALPHA";
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typedef struct vnc_guac_client_data {
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rfbClient* rfb_client;
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png_byte** png_buffer;
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png_byte** png_buffer_alpha;
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} vnc_guac_client_data;
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void guac_vnc_cursor(rfbClient* client, int x, int y, int w, int h, int bpp) {
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int dx, dy;
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GUACIO* io = rfbClientGetClientData(client, __GUAC_VNC_TAG_IO);
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png_byte** png_buffer = rfbClientGetClientData(client, __GUAC_VNC_TAG_PNG_BUFFER_ALPHA);
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png_byte* row;
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png_byte** png_row_current = png_buffer;
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unsigned int bytesPerRow = bpp * w;
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unsigned char* fb_row_current = client->rcSource;
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unsigned char* fb_mask = client->rcMask;
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unsigned char* fb_row;
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unsigned int v;
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/* Copy image data from VNC client to PNG */
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for (dy = 0; dy<h; dy++) {
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row = *(png_row_current++);
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fb_row = fb_row_current;
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fb_row_current += bytesPerRow;
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for (dx = 0; dx<w; dx++) {
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switch (bpp) {
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case 4:
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v = *((unsigned int*) fb_row);
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break;
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case 2:
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v = *((unsigned short*) fb_row);
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break;
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default:
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v = *((unsigned char*) fb_row);
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}
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*(row++) = (v >> client->format.redShift) * 256 / (client->format.redMax+1);
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*(row++) = (v >> client->format.greenShift) * 256 / (client->format.greenMax+1);
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*(row++) = (v >> client->format.blueShift) * 256 / (client->format.blueMax+1);
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/* Handle mask */
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if (*(fb_mask++))
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*(row++) = 255;
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else
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*(row++) = 0;
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fb_row += bpp;
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}
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}
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/* SEND CURSOR */
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guac_send_cursor(io, x, y, png_buffer, w, h);
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guac_flush(io);
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}
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void guac_vnc_update(rfbClient* client, int x, int y, int w, int h) {
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int dx, dy;
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GUACIO* io = rfbClientGetClientData(client, __GUAC_VNC_TAG_IO);
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png_byte** png_buffer = rfbClientGetClientData(client, __GUAC_VNC_TAG_PNG_BUFFER);
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png_byte* row;
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png_byte** png_row_current = png_buffer;
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unsigned int bpp = client->format.bitsPerPixel/8;
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unsigned int bytesPerRow = bpp * client->width;
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unsigned char* fb_row_current = client->frameBuffer + (y * bytesPerRow) + (x * bpp);
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unsigned char* fb_row;
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unsigned int v;
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/* Copy image data from VNC client to PNG */
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for (dy = y; dy<y+h; dy++) {
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row = *(png_row_current++);
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fb_row = fb_row_current;
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fb_row_current += bytesPerRow;
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for (dx = x; dx<x+w; dx++) {
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switch (bpp) {
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case 4:
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v = *((unsigned int*) fb_row);
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break;
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case 2:
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v = *((unsigned short*) fb_row);
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break;
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default:
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v = *((unsigned char*) fb_row);
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}
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*(row++) = (v >> client->format.redShift) * 256 / (client->format.redMax+1);
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*(row++) = (v >> client->format.greenShift) * 256 / (client->format.greenMax+1);
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*(row++) = (v >> client->format.blueShift) * 256 / (client->format.blueMax+1);
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fb_row += bpp;
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}
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}
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guac_send_png(io, x, y, png_buffer, w, h);
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guac_flush(io);
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}
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void guac_vnc_copyrect(rfbClient* client, int src_x, int src_y, int w, int h, int dest_x, int dest_y) {
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GUACIO* io = rfbClientGetClientData(client, __GUAC_VNC_TAG_IO);
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guac_send_copy(io, src_x, src_y, w, h, dest_x, dest_y);
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guac_flush(io);
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}
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char* guac_vnc_get_password(rfbClient* client) {
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/* Freed after use by libvncclient */
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char* password = malloc(64);
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strncpy(password, __guac_password, 63);
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fprintf(stderr, "Sending password: %s\n", password);
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return password;
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}
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void vnc_guac_client_handle_messages(guac_client* client) {
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int wait_result;
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rfbClient* rfb_client = ((vnc_guac_client_data*) client->data)->rfb_client;
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wait_result = WaitForMessage(rfb_client, 2000);
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if (wait_result < 0) {
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fprintf(stderr, "WAIT FAIL\n");
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return;
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}
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if (wait_result > 0) {
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if (!HandleRFBServerMessage(rfb_client)) {
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fprintf(stderr, "HANDLE FAIL\n");
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return;
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}
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}
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}
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void vnc_guac_client_mouse_handler(guac_client* client, int x, int y, int mask) {
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rfbClient* rfb_client = ((vnc_guac_client_data*) client->data)->rfb_client;
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SendPointerEvent(rfb_client, x, y, mask);
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}
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void vnc_guac_client_key_handler(guac_client* client, int keysym, int pressed) {
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rfbClient* rfb_client = ((vnc_guac_client_data*) client->data)->rfb_client;
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SendKeyEvent(rfb_client, keysym, pressed);
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}
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void vnc_guac_client_free_handler(guac_client* client) {
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rfbClient* rfb_client = ((vnc_guac_client_data*) client->data)->rfb_client;
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png_byte** png_buffer = ((vnc_guac_client_data*) client->data)->png_buffer;
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png_byte** png_buffer_alpha = ((vnc_guac_client_data*) client->data)->png_buffer_alpha;
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/* Free PNG data */
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guac_free_png_buffer(png_buffer, rfb_client->height);
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guac_free_png_buffer(png_buffer_alpha, rfb_client->height);
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/* Clean up VNC client*/
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rfbClientCleanup(rfb_client);
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}
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void vnc_guac_client_init(guac_client* client) {
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char* hostname;
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rfbClient* rfb_client;
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png_byte** png_buffer;
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png_byte** png_buffer_alpha;
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vnc_guac_client_data* vnc_guac_client_data;
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/*** INIT ***/
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rfb_client = rfbGetClient(8, 3, 4); /* 32-bpp client */
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/* Framebuffer update handler */
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rfb_client->GotFrameBufferUpdate = guac_vnc_update;
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/*rfb_client->GotCopyRect = guac_vnc_copyrect;*/
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/* Enable client-side cursor */
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rfb_client->GotCursorShape = guac_vnc_cursor;
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rfb_client->appData.useRemoteCursor = TRUE;
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/* Password */
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rfb_client->GetPassword = guac_vnc_get_password;
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/* Connect */
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hostname = malloc(64);
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strcpy(hostname, "localhost");
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rfb_client->serverHost = hostname;
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rfb_client->serverPort = 5902;
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rfbInitClient(rfb_client, NULL, NULL);
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/* Allocate buffers */
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png_buffer = guac_alloc_png_buffer(rfb_client->width, rfb_client->height, 3); /* No-alpha */
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png_buffer_alpha = guac_alloc_png_buffer(rfb_client->width, rfb_client->height, 4); /* With alpha */
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/* Store Guac data in client */
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rfbClientSetClientData(rfb_client, __GUAC_VNC_TAG_IO, client->io);
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rfbClientSetClientData(rfb_client, __GUAC_VNC_TAG_PNG_BUFFER, png_buffer);
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rfbClientSetClientData(rfb_client, __GUAC_VNC_TAG_PNG_BUFFER_ALPHA, png_buffer_alpha);
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/* Send name */
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guac_send_name(client->io, rfb_client->desktopName);
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/* Send size */
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guac_send_size(client->io, rfb_client->width, rfb_client->height);
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guac_flush(client->io);
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/* Set client data */
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vnc_guac_client_data = malloc(sizeof(vnc_guac_client_data));
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vnc_guac_client_data->rfb_client = rfb_client;
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vnc_guac_client_data->png_buffer = png_buffer;
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vnc_guac_client_data->png_buffer_alpha = png_buffer_alpha;
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client->data = vnc_guac_client_data;
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/* Set handlers */
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client->handle_messages = vnc_guac_client_handle_messages;
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client->mouse_handler = vnc_guac_client_mouse_handler;
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client->key_handler = vnc_guac_client_key_handler;
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fprintf(stderr, "VNC Client loaded.\n");
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}
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