vt52vnc.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <termios.h>
   5 #include <sys/time.h>
   6 #include <sys/types.h>
   7 #include <unistd.h>
   8 #include <string.h>
   9
  10 #define byterate 1920
  11
  12 #include "vt52vnc.h"
  13
  14 int main(int argc, char * argv[])
  15 {
  16         int port = DEF_PORT;
  17         char * host = "127.0.0.1";
  18         int fd, retval;
  19         struct termios ti1, ti2;
  20         fd_set sel_in;
  21         struct timeval tv;
  22         unsigned long stat;
  23         int already_requested = 0;
  24         int must_draw = 0;
  25         int must_redraw = 1;
  26
  27         if (argc>=2)
  28                 host = argv[1];
  29         if (argc>=3)
  30                 port = atoi(argv[2]);
  31         fd = vncproto_init(host, port);
  32         if(fd==-1)
  33                 return -1;
  34
  35         tcgetattr (0, &ti1);
  36         ti2 = ti1;
  37         cfmakeraw(&ti2);
  38
  39         if (request_vnc_refresh(fd) == -1)
  40                 return -1;
  41         tcsetattr(0, TCSANOW, &ti2);
  42
  43         tv.tv_sec = 0;
  44         tv.tv_usec = 500000;
  45
  46         while(1) {
  47                 FD_ZERO(&sel_in);
  48                 FD_SET(fd, &sel_in);
  49                 FD_SET(0, &sel_in);
  50                 retval = select(fd+1, &sel_in, NULL, NULL, &tv);
  51                 if (retval == 0) {
  52                         if (!already_requested && !must_redraw && !must_draw) {
  53                                 if (request_vnc_refresh(fd) == -1)
  54                                         break;
  55                                 already_requested = 1;
  56                         }
  57                         if (must_draw || must_redraw) {
  58                                 must_draw = drawdelta();
  59                                 if (!must_draw) {
  60                                         must_draw=must_redraw;
  61                                         must_redraw=0;
  62                                 }
  63                                 stat = get_stat();
  64                                 tv.tv_sec = stat/byterate;
  65                                 tv.tv_usec = (stat - tv.tv_sec*byterate)*1000000/byterate;
  66                         } else {
  67                                 tv.tv_sec = 0;
  68                                 tv.tv_usec = 200000;
  69                         }
  70                 }
  71                 if (FD_ISSET(fd, &sel_in)) {
  72                         already_requested = 0;
  73                         if (parse_vnc_in(fd) == -1)
  74                                 break;
  75                         must_redraw = 1;
  76                         tv.tv_sec = 0;
  77                         tv.tv_usec = 0;
  78                 }
  79                 if (FD_ISSET(0, &sel_in)) {
  80                         if (parse_kbd_in(0, fd) == -1)
  81                                 break;
  82                 }
  83         }
  84         tcsetattr(0, TCSANOW, &ti1);
  85 #define W(a,b) write((a),(b),strlen(b))
  86         W(1, "\n\x1bH\x1bJ");
  87         return 0;
  88 }