/*
* Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
/*
* vncviewer.c - the Xt-based VNC viewer.
*/
#ifdef __STRICT_ANSI__
#define _BSD_SOURCE
#define _POSIX_SOURCE
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <rfb/rfbclient.h>
#include "tls.h"
static void Dummy(rfbClient* client) {
}
static rfbBool DummyPoint(rfbClient* client, int x, int y) {
return TRUE;
}
static void DummyRect(rfbClient* client, int x, int y, int w, int h) {
}
#ifdef __MINGW32__
static char* NoPassword(rfbClient* client) {
return strdup("");
}
#undef SOCKET
#include <winsock2.h>
#define close closesocket
#else
#include <stdio.h>
#include <termios.h>
#endif
static char* ReadPassword(rfbClient* client) {
#ifdef __MINGW32__
/* FIXME */
rfbClientErr("ReadPassword on MinGW32 NOT IMPLEMENTED\n");
return NoPassword(client);
#else
int i;
char* p=malloc(9);
struct termios save,noecho;
p[0]=0;
if(tcgetattr(fileno(stdin),&save)!=0) return p;
noecho=save; noecho.c_lflag &= ~ECHO;
if(tcsetattr(fileno(stdin),TCSAFLUSH,&noecho)!=0) return p;
fprintf(stderr,"Password: ");
i=0;
while(1) {
int c=fgetc(stdin);
if(c=='\n')
break;
if(i<8) {
p[i]=c;
i++;
p[i]=0;
}
}
tcsetattr(fileno(stdin),TCSAFLUSH,&save);
return p;
#endif
}
static rfbBool MallocFrameBuffer(rfbClient* client) {
if(client->frameBuffer)
free(client->frameBuffer);
client->frameBuffer=malloc(client->width*client->height*client->format.bitsPerPixel/8);
return client->frameBuffer?TRUE:FALSE;
}
static void initAppData(AppData* data) {
data->shareDesktop=TRUE;
data->viewOnly=FALSE;
data->encodingsString="tight zrle ultra copyrect hextile zlib corre rre raw";
data->useBGR233=FALSE;
data->nColours=0;
data->forceOwnCmap=FALSE;
data->forceTrueColour=FALSE;
data->requestedDepth=0;
data->compressLevel=3;
data->qualityLevel=5;
#ifdef LIBVNCSERVER_HAVE_LIBJPEG
data->enableJPEG=TRUE;
#else
data->enableJPEG=FALSE;
#endif
data->useRemoteCursor=FALSE;
}
rfbClient* rfbGetClient(int bitsPerSample,int samplesPerPixel,
int bytesPerPixel) {
rfbClient* client=(rfbClient*)calloc(sizeof(rfbClient),1);
if(!client) {
rfbClientErr("Couldn't allocate client structure!\n");
return NULL;
}
initAppData(&client->appData);
client->endianTest = 1;
client->programName="";
client->serverHost=strdup("");
client->serverPort=5900;
client->destHost = NULL;
client->destPort = 5900;
client->CurrentKeyboardLedState = 0;
client->HandleKeyboardLedState = (HandleKeyboardLedStateProc)DummyPoint;
/* default: use complete frame buffer */
client->updateRect.x = -1;
client->format.bitsPerPixel = bytesPerPixel*8;
client->format.depth = bitsPerSample*samplesPerPixel;
client->appData.requestedDepth=client->format.depth;
client->format.bigEndian = *(char *)&client->endianTest?FALSE:TRUE;
client->format.trueColour = TRUE;
if (client->format.bitsPerPixel == 8) {
client->format.redMax = 7;
client->format.greenMax = 7;
client->format.blueMax = 3;
client->format.redShift = 0;
client->format.greenShift = 3;
client->format.blueShift = 6;
} else {
client->format.redMax = (1 << bitsPerSample) - 1;
client->format.greenMax = (1 << bitsPerSample) - 1;
client->format.blueMax = (1 << bitsPerSample) - 1;
if(!client->format.bigEndian) {
client->format.redShift = 0;
client->format.greenShift = bitsPerSample;
client->format.blueShift = bitsPerSample * 2;
} else {
if(client->format.bitsPerPixel==8*3) {
client->format.redShift = bitsPerSample*2;
client->format.greenShift = bitsPerSample*1;
client->format.blueShift = 0;
} else {
client->format.redShift = bitsPerSample*3;
client->format.greenShift = bitsPerSample*2;
client->format.blueShift = bitsPerSample;
}
}
}
client->bufoutptr=client->buf;
client->buffered=0;
#ifdef LIBVNCSERVER_HAVE_LIBZ
client->raw_buffer_size = -1;
client->decompStreamInited = FALSE;
#ifdef LIBVNCSERVER_HAVE_LIBJPEG
memset(client->zlibStreamActive,0,sizeof(rfbBool)*4);
client->jpegSrcManager = NULL;
#endif
#endif
client->HandleCursorPos = DummyPoint;
client->SoftCursorLockArea = DummyRect;
client->SoftCursorUnlockScreen = Dummy;
client->GotFrameBufferUpdate = DummyRect;
client->FinishedFrameBufferUpdate = NULL;
client->GetPassword = ReadPassword;
client->MallocFrameBuffer = MallocFrameBuffer;
client->Bell = Dummy;
client->CurrentKeyboardLedState = 0;
client->HandleKeyboardLedState = (HandleKeyboardLedStateProc)DummyPoint;
client->QoS_DSCP = 0;
client->authScheme = 0;
client->subAuthScheme = 0;
client->GetCredential = NULL;
client->tlsSession = NULL;
client->sock = -1;
client->listenSock = -1;
client->listenAddress = NULL;
client->listen6Sock = -1;
client->listen6Address = NULL;
client->clientAuthSchemes = NULL;
return client;
}
static rfbBool rfbInitConnection(rfbClient* client)
{
/* Unless we accepted an incoming connection, make a TCP connection to the
given VNC server */
if (!client->listenSpecified) {
if (!client->serverHost)
return FALSE;
if (client->destHost) {
if (!ConnectToRFBRepeater(client,client->serverHost,client->serverPort,client->destHost,client->destPort))
return FALSE;
} else {
if (!ConnectToRFBServer(client,client->serverHost,client->serverPort))
return FALSE;
}
}
/* Initialise the VNC connection, including reading the password */
if (!InitialiseRFBConnection(client))
return FALSE;
client->width=client->si.framebufferWidth;
client->height=client->si.framebufferHeight;
client->MallocFrameBuffer(client);
if (!SetFormatAndEncodings(client))
return FALSE;
if (client->updateRect.x < 0) {
client->updateRect.x = client->updateRect.y = 0;
client->updateRect.w = client->width;
client->updateRect.h = client->height;
}
if (client->appData.scaleSetting>1)
{
if (!SendScaleSetting(client, client->appData.scaleSetting))
return FALSE;
if (!SendFramebufferUpdateRequest(client,
client->updateRect.x / client->appData.scaleSetting,
client->updateRect.y / client->appData.scaleSetting,
client->updateRect.w / client->appData.scaleSetting,
client->updateRect.h / client->appData.scaleSetting,
FALSE))
return FALSE;
}
else
{
if (!SendFramebufferUpdateRequest(client,
client->updateRect.x, client->updateRect.y,
client->updateRect.w, client->updateRect.h,
FALSE))
return FALSE;
}
return TRUE;
}
rfbBool rfbInitClient(rfbClient* client,int* argc,char** argv) {
int i,j;
if(argv && argc && *argc) {
if(client->programName==0)
client->programName=argv[0];
for (i = 1; i < *argc; i++) {
j = i;
if (strcmp(argv[i], "-listen") == 0) {
listenForIncomingConnections(client);
break;
} else if (strcmp(argv[i], "-listennofork") == 0) {
listenForIncomingConnectionsNoFork(client, -1);
break;
} else if (strcmp(argv[i], "-play") == 0) {
client->serverPort = -1;
j++;
} else if (i+1<*argc && strcmp(argv[i], "-encodings") == 0) {
client->appData.encodingsString = argv[i+1];
j+=2;
} else if (i+1<*argc && strcmp(argv[i], "-compress") == 0) {
client->appData.compressLevel = atoi(argv[i+1]);
j+=2;
} else if (i+1<*argc && strcmp(argv[i], "-quality") == 0) {
client->appData.qualityLevel = atoi(argv[i+1]);
j+=2;
} else if (i+1<*argc && strcmp(argv[i], "-scale") == 0) {
client->appData.scaleSetting = atoi(argv[i+1]);
j+=2;
} else if (i+1<*argc && strcmp(argv[i], "-qosdscp") == 0) {
client->QoS_DSCP = atoi(argv[i+1]);
j+=2;
} else if (i+1<*argc && strcmp(argv[i], "-repeaterdest") == 0) {
char* colon=strchr(argv[i+1],':');
if(client->destHost)
free(client->destHost);
client->destPort = 5900;
client->destHost = strdup(argv[i+1]);
if(colon) {
client->destHost[(int)(colon-argv[i+1])] = '\0';
client->destPort = atoi(colon+1);
}
j+=2;
} else {
char* colon=strchr(argv[i],':');
if(client->serverHost)
free(client->serverHost);
if(colon) {
client->serverHost = strdup(argv[i]);
client->serverHost[(int)(colon-argv[i])] = '\0';
client->serverPort = atoi(colon+1);
} else {
client->serverHost = strdup(argv[i]);
}
if(client->serverPort >= 0 && client->serverPort < 5900)
client->serverPort += 5900;
}
/* purge arguments */
if (j>i) {
*argc-=j-i;
memmove(argv+i,argv+j,(*argc-i)*sizeof(char*));
i--;
}
}
}
if(!rfbInitConnection(client)) {
rfbClientCleanup(client);
return FALSE;
}
return TRUE;
}
void rfbClientCleanup(rfbClient* client) {
#ifdef LIBVNCSERVER_HAVE_LIBZ
#ifdef LIBVNCSERVER_HAVE_LIBJPEG
int i;
for ( i = 0; i < 4; i++ ) {
if (client->zlibStreamActive[i] == TRUE ) {
if (inflateEnd (&client->zlibStream[i]) != Z_OK &&
client->zlibStream[i].msg != NULL)
rfbClientLog("inflateEnd: %s\n", client->zlibStream[i].msg);
}
}
if ( client->decompStreamInited == TRUE ) {
if (inflateEnd (&client->decompStream) != Z_OK &&
client->decompStream.msg != NULL)
rfbClientLog("inflateEnd: %s\n", client->decompStream.msg );
}
if (client->jpegSrcManager)
free(client->jpegSrcManager);
#endif
#endif
FreeTLS(client);
if (client->sock >= 0)
close(client->sock);
if (client->listenSock >= 0)
close(client->listenSock);
free(client->desktopName);
free(client->serverHost);
if (client->destHost)
free(client->destHost);
if (client->clientAuthSchemes)
free(client->clientAuthSchemes);
free(client);
}