1 f0bf146d 2005-07-13 devnull #include <u.h>
  2 f0bf146d 2005-07-13 devnull #include <libc.h>
  3 f0bf146d 2005-07-13 devnull #include <auth.h>
  4 f0bf146d 2005-07-13 devnull 
  5 f0bf146d 2005-07-13 devnull int verbose;
  6 f0bf146d 2005-07-13 devnull int trusted;
  7 f0bf146d 2005-07-13 devnull 
  8 f0bf146d 2005-07-13 devnull void
  9 f0bf146d 2005-07-13 devnull usage(void)
 10 f0bf146d 2005-07-13 devnull {
 11 f0bf146d 2005-07-13 devnull 	fprint(2, "usage: listen1 [-v] address cmd args...\n");
 12 f0bf146d 2005-07-13 devnull 	exits("usage");
 13 f0bf146d 2005-07-13 devnull }
 14 f0bf146d 2005-07-13 devnull 
 15 f0bf146d 2005-07-13 devnull char*
 16 f0bf146d 2005-07-13 devnull remoteaddr(char *dir)
 17 f0bf146d 2005-07-13 devnull {
 18 f0bf146d 2005-07-13 devnull 	static char buf[128];
 19 f0bf146d 2005-07-13 devnull 	char *p;
 20 f0bf146d 2005-07-13 devnull 	int n, fd;
 21 f0bf146d 2005-07-13 devnull 
 22 f0bf146d 2005-07-13 devnull 	snprint(buf, sizeof buf, "%s/remote", dir);
 23 f0bf146d 2005-07-13 devnull 	fd = open(buf, OREAD);
 24 f0bf146d 2005-07-13 devnull 	if(fd < 0)
 25 f0bf146d 2005-07-13 devnull 		return "";
 26 f0bf146d 2005-07-13 devnull 	n = read(fd, buf, sizeof(buf));
 27 f0bf146d 2005-07-13 devnull 	close(fd);
 28 f0bf146d 2005-07-13 devnull 	if(n > 0){
 29 f0bf146d 2005-07-13 devnull 		buf[n] = 0;
 30 f0bf146d 2005-07-13 devnull 		p = strchr(buf, '!');
 31 f0bf146d 2005-07-13 devnull 		if(p)
 32 f0bf146d 2005-07-13 devnull 			*p = 0;
 33 f0bf146d 2005-07-13 devnull 		return buf;
 34 f0bf146d 2005-07-13 devnull 	}
 35 f0bf146d 2005-07-13 devnull 	return "";
 36 f0bf146d 2005-07-13 devnull }
 37 f0bf146d 2005-07-13 devnull 
 38 f0bf146d 2005-07-13 devnull void
 39 f0bf146d 2005-07-13 devnull main(int argc, char **argv)
 40 f0bf146d 2005-07-13 devnull {
 41 f0bf146d 2005-07-13 devnull 	char dir[40], ndir[40];
 42 f0bf146d 2005-07-13 devnull 	int ctl, nctl, fd;
 43 f0bf146d 2005-07-13 devnull 
 44 f0bf146d 2005-07-13 devnull 	ARGBEGIN{
 45 f0bf146d 2005-07-13 devnull 	default:
 46 f0bf146d 2005-07-13 devnull 		usage();
 47 f0bf146d 2005-07-13 devnull 	case 't':
 48 f0bf146d 2005-07-13 devnull 		trusted = 1;
 49 f0bf146d 2005-07-13 devnull 		break;
 50 f0bf146d 2005-07-13 devnull 	case 'v':
 51 f0bf146d 2005-07-13 devnull 		verbose = 1;
 52 f0bf146d 2005-07-13 devnull 		break;
 53 f0bf146d 2005-07-13 devnull 	}ARGEND
 54 f0bf146d 2005-07-13 devnull 
 55 f0bf146d 2005-07-13 devnull 	if(argc < 2)
 56 f0bf146d 2005-07-13 devnull 		usage();
 57 f0bf146d 2005-07-13 devnull 
 58 f0bf146d 2005-07-13 devnull 	if(!verbose){
 59 f0bf146d 2005-07-13 devnull 		close(1);
 60 f0bf146d 2005-07-13 devnull 		fd = open("/dev/null", OWRITE);
 61 f0bf146d 2005-07-13 devnull 		if(fd != 1){
 62 f0bf146d 2005-07-13 devnull 			dup(fd, 1);
 63 f0bf146d 2005-07-13 devnull 			close(fd);
 64 f0bf146d 2005-07-13 devnull 		}
 65 f0bf146d 2005-07-13 devnull 	}
 66 f0bf146d 2005-07-13 devnull 
 67 f0bf146d 2005-07-13 devnull 	print("listen started\n");
 68 f0bf146d 2005-07-13 devnull 	ctl = announce(argv[0], dir);
 69 f0bf146d 2005-07-13 devnull 	if(ctl < 0)
 70 f0bf146d 2005-07-13 devnull 		sysfatal("announce %s: %r", argv[0]);
 71 f0bf146d 2005-07-13 devnull 
 72 f0bf146d 2005-07-13 devnull 	for(;;){
 73 f0bf146d 2005-07-13 devnull 		nctl = listen(dir, ndir);
 74 f0bf146d 2005-07-13 devnull 		if(nctl < 0)
 75 f0bf146d 2005-07-13 devnull 			sysfatal("listen %s: %r", argv[0]);
 76 f0bf146d 2005-07-13 devnull 
 77 f0bf146d 2005-07-13 devnull 		switch(rfork(RFFDG|RFPROC|RFNOWAIT|RFNOTEG)){
 78 f0bf146d 2005-07-13 devnull 		case -1:
 79 f0bf146d 2005-07-13 devnull 			close(nctl);
 80 f0bf146d 2005-07-13 devnull 			continue;
 81 f0bf146d 2005-07-13 devnull 		case 0:
 82 f0bf146d 2005-07-13 devnull 			fd = accept(nctl, ndir);
 83 f0bf146d 2005-07-13 devnull 			if(fd < 0){
 84 f0bf146d 2005-07-13 devnull 				fprint(2, "accept %s: can't open  %s/data: %r", argv[0], ndir);
 85 f0bf146d 2005-07-13 devnull 				_exits(0);
 86 f0bf146d 2005-07-13 devnull 			}
 87 f0bf146d 2005-07-13 devnull 			print("incoming call for %s from %s in %s\n", argv[0], remoteaddr(ndir), ndir);
 88 f0bf146d 2005-07-13 devnull 			close(ctl);
 89 f0bf146d 2005-07-13 devnull 			close(nctl);
 90 cbeb0b26 2006-04-01 devnull 			/*putenv("net", ndir); */
 91 cbeb0b26 2006-04-01 devnull 			/*sprint(data, "%s/data", ndir); */
 92 cbeb0b26 2006-04-01 devnull 			/*bind(data, "/dev/cons", MREPL); */
 93 f0bf146d 2005-07-13 devnull 			dup(fd, 0);
 94 f0bf146d 2005-07-13 devnull 			dup(fd, 1);
 95 f0bf146d 2005-07-13 devnull 			dup(fd, 2);
 96 f0bf146d 2005-07-13 devnull 			close(fd);
 97 f0bf146d 2005-07-13 devnull 			exec(argv[1], argv+1);
 98 f0bf146d 2005-07-13 devnull 			fprint(2, "exec: %r");
 99 f0bf146d 2005-07-13 devnull 			exits(nil);
100 f0bf146d 2005-07-13 devnull 		default:
101 f0bf146d 2005-07-13 devnull 			close(nctl);
102 f0bf146d 2005-07-13 devnull 			break;
103 f0bf146d 2005-07-13 devnull 		}
104 f0bf146d 2005-07-13 devnull 	}
105 f0bf146d 2005-07-13 devnull }