summaryrefslogtreecommitdiffstats
path: root/vncterm/LinuxVNC.c
blob: 9b58954980e8decd023d178e7bba57ac46676aea (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
#include <rfb/keysym.h>
#include "VNConsole.h"
#include "vga.h"
#include <fcntl.h>
#include <sys/ioctl.h>

static int tty=2;
static int tty_inject_device;

void do_key(rfbBool down,rfbKeySym keySym,rfbClientPtr cl)
{
  static char isControl=0;

  if(down) {
    /* if(keySym==XK_Escape)
      rfbCloseClient(cl);
    else */ if(keySym==XK_Control_L || keySym==XK_Control_R)
      isControl++;
    else if(tty_inject_device>=0) {
      if(keySym==XK_Escape)
	keySym=27;
      if(isControl) {
	if(keySym>='a' && keySym<='z')
	  keySym-='a'-1;
	else if(keySym>='A' && keySym<='Z')
	  keySym-='A'-1;
	else
	  keySym=0xffff;
      }

      if(keySym==XK_Tab)
	keySym='\t';
      else if(keySym==XK_Return)
	keySym='\r';
      else if(keySym==XK_BackSpace)
	keySym=8;
      else if(keySym==XK_Home || keySym==XK_KP_Home)
	keySym=1;
      else if(keySym==XK_End || keySym==XK_KP_End)
	keySym=5;
      else if(keySym==XK_Up || keySym==XK_KP_Up)
	keySym=16;
      else if(keySym==XK_Down || keySym==XK_KP_Down)
	keySym=14;
      else if(keySym==XK_Right || keySym==XK_KP_Right)
	keySym=6;
      else if(keySym==XK_Left || keySym==XK_KP_Left)
	keySym=2;

      if(keySym<0x100) {
	int ret;
	ret=ioctl(tty_inject_device,TIOCSTI,&keySym);
	if(ret<0) {
	  static char device[64];
	  close(tty_inject_device);
	  sprintf(device,"/dev/tty%d",tty);
	  tty_inject_device=open(device,O_WRONLY);
	  ret=ioctl(tty_inject_device,TIOCSTI,&keySym);
	  if(ret<0)
	    rfbErr("Couldn't reopen device %s!\n",device);
	}
      }
    }
  } else if(keySym==XK_Control_L || keySym==XK_Control_R)
    if(isControl>0)
      isControl--;
}

/* these colours are from linux kernel drivers/char/console.c */
unsigned char color_table[] = { 0, 4, 2, 6, 1, 5, 3, 7,
				       8,12,10,14, 9,13,11,15 };
/* the default colour table, for VGA+ colour systems */
int default_red[] = {0x00,0xaa,0x00,0xaa,0x00,0xaa,0x00,0xaa,
    0x55,0xff,0x55,0xff,0x55,0xff,0x55,0xff};
int default_grn[] = {0x00,0x00,0xaa,0x55,0x00,0x00,0xaa,0xaa,
    0x55,0x55,0xff,0xff,0x55,0x55,0xff,0xff};
int default_blu[] = {0x00,0x00,0x00,0x00,0xaa,0xaa,0xaa,0xaa,
    0x55,0x55,0x55,0x55,0xff,0xff,0xff,0xff};

int main(int argc,char **argv)
{
  int width=80,height=25;
  char *buffer;
  vncConsolePtr console;
  char tty_device[64],title[128];
  int i;
  FILE* tty_file;
  struct winsize dimensions;

  if(argc>1) {
    if((tty=atoi(argv[1]))<1) {
      rfbErr("Usage: %s [tty_number [vnc args]]\n",argv[0]);
      exit(1);
    } else {
      argv++;
      argc--;
    }
  }

  /* getopt goes here! */

  sprintf(tty_device,"/dev/tty%d",tty);
  if((tty_inject_device=open(tty_device,O_WRONLY))<0) {
    rfbErr("Couldn't open tty device %s!\n",tty_device);
    exit(1);
  }
  rfbLog("Using device %s.\n",tty_device);

  if(ioctl(tty_inject_device,TIOCGWINSZ,&dimensions)>=0) {
    width=dimensions.ws_col;
    height=dimensions.ws_row;
  }

  sprintf(title,"LinuxVNC: /dev/tty%d",tty);

  /* console init */
  if(!(console=vcGetConsole(&argc,argv,width,height,&vgaFont,TRUE)))
    exit(1);

  for(i=0;i<16;i++) {
    console->screen->colourMap.data.bytes[i*3+0]=default_red[color_table[i]];
    console->screen->colourMap.data.bytes[i*3+1]=default_grn[color_table[i]];
    console->screen->colourMap.data.bytes[i*3+2]=default_blu[color_table[i]];
  }
  console->screen->desktopName=title;
  console->screen->kbdAddEvent=do_key;
  console->selectTimeOut=100000;
  console->wrapBottomToTop=TRUE;
#ifdef USE_OLD_VCS
  buffer=malloc(width*height);
  console->cursorActive=FALSE;
#else
  buffer=malloc(width*height*2+4);
  console->cursorActive=TRUE;
#endif
  /* memcpy(buffer,console->screenBuffer,width*height); */

#ifdef USE_OLD_VCS
  sprintf(tty_device,"/dev/vcs%d",tty);
#else
  sprintf(tty_device,"/dev/vcsa%d",tty);
#endif

  while(rfbIsActive(console->screen)) {
    if(!console->currentlyMarking) {
      tty_file=fopen(tty_device,"rb");
      if(!tty_file) {
	rfbErr("cannot open device \"%s\"\n",
		tty_device);
	exit(1);
      }
#ifdef USE_OLD_VCS
      fread(buffer,width,height,tty_file);
#else
      fread(buffer,width*height*2+4,1,tty_file);
      vcHideCursor(console);
#endif
      fclose(tty_file);

      for(i=0;i<console->width*console->height;i++) {
	if
#ifdef USE_OLD_VCS
	 (buffer[i]!=console->screenBuffer[i])
#else
	 (buffer[4+2*i]!=console->screenBuffer[i] ||
	  buffer[5+2*i]!=console->attributeBuffer[i])
#endif
	  {
	    console->x=(i%console->width);
	    console->y=(i/console->width);
	    /*
	      rfbLog("changes: %d,%d (%d!=%d || %d!=%d)\n",
	      console->x,console->y,
	      buffer[4+2*i],console->screenBuffer[i],
	      buffer[5+2*i],console->attributeBuffer[i]);
	    */
	    
#ifdef USE_OLD_VCS
	    vcPutChar(console,buffer[i]);
#else
	    vcPutCharColour(console,buffer[4+i*2],buffer[5+i*2]&0x7,buffer[5+i*2]>>4);
#endif
	  }
      }
      console->x=buffer[2];
      console->y=buffer[3];
    }
    vcProcessEvents(console);
  }
  return(0);
}