LibVNCServer/LibVNCClient
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vncev.c

This program is a simple server to show events coming from the client

#ifdef __STRICT_ANSI__
#define _BSD_SOURCE
#endif
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#ifndef __MINGW32__
#include <sys/socket.h>
#endif
#include <rfb/rfb.h>
#include <rfb/default8x16.h>
#define width 100
#define height 100
static char f[width*height];
static char* keys[0x400];
static int hex2number(unsigned char c)
{
if(c>'f') return(-1);
else if(c>'F')
return(10+c-'a');
else if(c>'9')
return(10+c-'A');
else
return(c-'0');
}
static void read_keys(void)
{
int i,j,k;
char buffer[1024];
FILE* keysyms=fopen("keysym.h","r");
memset(keys,0,0x400*sizeof(char*));
if(!keysyms)
return;
while(!feof(keysyms)) {
fgets(buffer,1024,keysyms);
if(!strncmp(buffer,"#define XK_",strlen("#define XK_"))) {
for(i=strlen("#define XK_");buffer[i] && buffer[i]!=' '
&& buffer[i]!='\t';i++);
if(buffer[i]==0) /* don't support wrapped lines */
continue;
buffer[i]=0;
for(i++;buffer[i] && buffer[i]!='0';i++);
if(buffer[i]==0 || buffer[i+1]!='x') continue;
for(j=0,i+=2;(k=hex2number(buffer[i]))>=0;i++)
j=j*16+k;
if(keys[j&0x3ff]) {
char* x=(char*)malloc(1+strlen(keys[j&0x3ff])+1+strlen(buffer+strlen("#define ")));
strcpy(x,keys[j&0x3ff]);
strcat(x,",");
strcat(x,buffer+strlen("#define "));
free(keys[j&0x3ff]);
keys[j&0x3ff]=x;
} else
keys[j&0x3ff] = strdup(buffer+strlen("#define "));
}
}
fclose(keysyms);
}
static int lineHeight=16,lineY=height-16;
static void output(rfbScreenInfoPtr s,char* line)
{
rfbDoCopyRect(s,0,0,width,height-lineHeight,0,-lineHeight);
rfbDrawString(s,&default8x16Font,10,lineY,line,0x01);
rfbLog("%s\n",line);
}
static void dokey(rfbBool down,rfbKeySym k,rfbClientPtr cl)
{
char buffer[1024+32];
sprintf(buffer,"%s: %s (0x%x)",
down?"down":"up",keys[k&0x3ff]?keys[k&0x3ff]:"",(unsigned int)k);
output(cl->screen,buffer);
}
static void doptr(int buttonMask,int x,int y,rfbClientPtr cl)
{
char buffer[1024];
if(buttonMask) {
sprintf(buffer,"Ptr: mouse button mask 0x%x at %d,%d",buttonMask,x,y);
output(cl->screen,buffer);
}
}
static enum rfbNewClientAction newclient(rfbClientPtr cl)
{
char buffer[1024];
struct sockaddr_in addr;
socklen_t len=sizeof(addr);
unsigned int ip;
getpeername(cl->sock,(struct sockaddr*)&addr,&len);
ip=ntohl(addr.sin_addr.s_addr);
sprintf(buffer,"Client connected from ip %d.%d.%d.%d",
(ip>>24)&0xff,(ip>>16)&0xff,(ip>>8)&0xff,ip&0xff);
output(cl->screen,buffer);
}
int main(int argc,char** argv)
{
rfbScreenInfoPtr s=rfbGetScreen(&argc,argv,width,height,8,1,1);
if(!s)
return 0;
s->colourMap.is16=FALSE;
s->colourMap.count=2;
s->colourMap.data.bytes=(unsigned char*)"\xd0\xd0\xd0\x30\x01\xe0";
s->serverFormat.trueColour=FALSE;
s->frameBuffer=f;
s->kbdAddEvent=dokey;
s->ptrAddEvent=doptr;
s->newClientHook=newclient;
memset(f,0,width*height);
read_keys();
while(1) {
rfbProcessEvents(s,999999);
}
}