git.maemo.org Git - presencevnc/blob - libvnc/vncterm/LinuxVNC.c

   1 #include <rfb/keysym.h>
   2 #include "VNConsole.h"
   3 #include "vga.h"
   4 #include <fcntl.h>
   5 #include <sys/ioctl.h>
   6
   7 static int tty=2;
   8 static int tty_inject_device;
   9
  10 void do_key(rfbBool down,rfbKeySym keySym,rfbClientPtr cl)
  11 {
  12   static char isControl=0;
  13
  14   if(down) {
  15     /* if(keySym==XK_Escape)
  16       rfbCloseClient(cl);
  17     else */ if(keySym==XK_Control_L || keySym==XK_Control_R)
  18       isControl++;
  19     else if(tty_inject_device>=0) {
  20       if(keySym==XK_Escape)
  21         keySym=27;
  22       if(isControl) {
  23         if(keySym>='a' && keySym<='z')
  24           keySym-='a'-1;
  25         else if(keySym>='A' && keySym<='Z')
  26           keySym-='A'-1;
  27         else
  28           keySym=0xffff;
  29       }
  30
  31       if(keySym==XK_Tab)
  32         keySym='\t';
  33       else if(keySym==XK_Return)
  34         keySym='\r';
  35       else if(keySym==XK_BackSpace)
  36         keySym=8;
  37       else if(keySym==XK_Home || keySym==XK_KP_Home)
  38         keySym=1;
  39       else if(keySym==XK_End || keySym==XK_KP_End)
  40         keySym=5;
  41       else if(keySym==XK_Up || keySym==XK_KP_Up)
  42         keySym=16;
  43       else if(keySym==XK_Down || keySym==XK_KP_Down)
  44         keySym=14;
  45       else if(keySym==XK_Right || keySym==XK_KP_Right)
  46         keySym=6;
  47       else if(keySym==XK_Left || keySym==XK_KP_Left)
  48         keySym=2;
  49
  50       if(keySym<0x100) {
  51         int ret;
  52         ret=ioctl(tty_inject_device,TIOCSTI,&keySym);
  53         if(ret<0) {
  54           static char device[64];
  55           close(tty_inject_device);
  56           sprintf(device,"/dev/tty%d",tty);
  57           tty_inject_device=open(device,O_WRONLY);
  58           ret=ioctl(tty_inject_device,TIOCSTI,&keySym);
  59           if(ret<0)
  60             rfbErr("Couldn't reopen device %s!\n",device);
  61         }
  62       }
  63     }
  64   } else if(keySym==XK_Control_L || keySym==XK_Control_R)
  65     isControl--;
  66 }
  67
  68 /* these colours are from linux kernel drivers/char/console.c */
  69 unsigned char color_table[] = { 0, 4, 2, 6, 1, 5, 3, 7,
  70                                        8,12,10,14, 9,13,11,15 };
  71 /* the default colour table, for VGA+ colour systems */
  72 int default_red[] = {0x00,0xaa,0x00,0xaa,0x00,0xaa,0x00,0xaa,
  73     0x55,0xff,0x55,0xff,0x55,0xff,0x55,0xff};
  74 int default_grn[] = {0x00,0x00,0xaa,0x55,0x00,0x00,0xaa,0xaa,
  75     0x55,0x55,0xff,0xff,0x55,0x55,0xff,0xff};
  76 int default_blu[] = {0x00,0x00,0x00,0x00,0xaa,0xaa,0xaa,0xaa,
  77     0x55,0x55,0x55,0x55,0xff,0xff,0xff,0xff};
  78
  79 int main(int argc,char **argv)
  80 {
  81   int width=80,height=25;
  82   char *buffer;
  83   vncConsolePtr console;
  84   char tty_device[64],title[128];
  85   int i;
  86   FILE* tty_file;
  87   struct winsize dimensions;
  88
  89   if(argc>1) {
  90     if((tty=atoi(argv[1]))<1) {
  91       rfbErr("Usage: %s [tty_number [vnc args]]\n",argv[0]);
  92       exit(1);
  93     } else {
  94       argv++;
  95       argc--;
  96     }
  97   }
  98
  99   /* getopt goes here! */
 100
 101   sprintf(tty_device,"/dev/tty%d",tty);
 102   if((tty_inject_device=open(tty_device,O_WRONLY))<0) {
 103     rfbErr("Couldn't open tty device %s!\n",tty_device);
 104     exit(1);
 105   }
 106   rfbLog("Using device %s.\n",tty_device);
 107
 108   if(ioctl(tty_inject_device,TIOCGWINSZ,&dimensions)>=0) {
 109     width=dimensions.ws_col;
 110     height=dimensions.ws_row;
 111   }
 112
 113   sprintf(title,"LinuxVNC: /dev/tty%d",tty);
 114
 115   /* console init */
 116   console=vcGetConsole(&argc,argv,width,height,&vgaFont,TRUE);
 117   for(i=0;i<16;i++) {
 118     console->screen->colourMap.data.bytes[i*3+0]=default_red[color_table[i]];
 119     console->screen->colourMap.data.bytes[i*3+1]=default_grn[color_table[i]];
 120     console->screen->colourMap.data.bytes[i*3+2]=default_blu[color_table[i]];
 121   }
 122   console->screen->desktopName=title;
 123   console->screen->kbdAddEvent=do_key;
 124   console->selectTimeOut=100000;
 125   console->wrapBottomToTop=TRUE;
 126 #ifdef USE_OLD_VCS
 127   buffer=malloc(width*height);
 128   console->cursorActive=FALSE;
 129 #else
 130   buffer=malloc(width*height*2+4);
 131   console->cursorActive=TRUE;
 132 #endif
 133   /* memcpy(buffer,console->screenBuffer,width*height); */
 134
 135 #ifdef USE_OLD_VCS
 136   sprintf(tty_device,"/dev/vcs%d",tty);
 137 #else
 138   sprintf(tty_device,"/dev/vcsa%d",tty);
 139 #endif
 140
 141   while(rfbIsActive(console->screen)) {
 142     if(!console->currentlyMarking) {
 143       tty_file=fopen(tty_device,"rb");
 144       if(!tty_file) {
 145         rfbErr("cannot open device \"%s\"\n",
 146                 tty_device);
 147         exit(1);
 148       }
 149 #ifdef USE_OLD_VCS
 150       fread(buffer,width,height,tty_file);
 151 #else
 152       fread(buffer,width*height*2+4,1,tty_file);
 153       vcHideCursor(console);
 154 #endif
 155       fclose(tty_file);
 156
 157       for(i=0;i<console->width*console->height;i++) {
 158         if
 159 #ifdef USE_OLD_VCS
 160          (buffer[i]!=console->screenBuffer[i])
 161 #else
 162          (buffer[4+2*i]!=console->screenBuffer[i] ||
 163           buffer[5+2*i]!=console->attributeBuffer[i])
 164 #endif
 165           {
 166             console->x=(i%console->width);
 167             console->y=(i/console->width);
 168             /*
 169               rfbLog("changes: %d,%d (%d!=%d || %d!=%d)\n",
 170               console->x,console->y,
 171               buffer[4+2*i],console->screenBuffer[i],
 172               buffer[5+2*i],console->attributeBuffer[i]);
 173             */
 174
 175 #ifdef USE_OLD_VCS
 176             vcPutChar(console,buffer[i]);
 177 #else
 178             vcPutCharColour(console,buffer[4+i*2],buffer[5+i*2]&0x7,buffer[5+i*2]>>4);
 179 #endif
 180           }
 181       }
 182       console->x=buffer[2];
 183       console->y=buffer[3];
 184     }
 185     vcProcessEvents(console);
 186   }
 187   return(0);
 188 }