sail/main.c

   1 /*      $NetBSD: main.c,v 1.25 2009/03/14 23:51:35 dholland Exp $       */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\
  35  The Regents of the University of California.  All rights reserved.");
  36 #endif /* not lint */
  37
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)main.c      8.2 (Berkeley) 4/28/95";
  41 #else
  42 __RCSID("$NetBSD: main.c,v 1.25 2009/03/14 23:51:35 dholland Exp $");
  43 #endif
  44 #endif /* not lint */
  45
  46 #include <err.h>
  47 #include <fcntl.h>
  48 #include <setjmp.h>
  49 #include <stdio.h>
  50 #include <stdlib.h>
  51 #include <string.h>
  52 #include <time.h>
  53 #include <unistd.h>
  54 #include "extern.h"
  55 #include "pathnames.h"
  56 #include "restart.h"
  57
  58 int
  59 main(int argc, char **argv)
  60 {
  61         char *p;
  62         int a,i;
  63         int fd;
  64
  65         gid = getgid();
  66         egid = getegid();
  67         setegid(gid);
  68
  69         fd = open("/dev/null", O_RDONLY);
  70         if (fd < 3)
  71                 exit(1);
  72         close(fd);
  73
  74         if (chdir(_PATH_SAILDIR) < 0) {
  75                 err(1, "%s", _PATH_SAILDIR);
  76         }
  77
  78         srandom((u_long)time(NULL));
  79
  80         if ((p = strrchr(*argv, '/')) != NULL)
  81                 p++;
  82         else
  83                 p = *argv;
  84
  85         if (strcmp(p, "driver") == 0 || strcmp(p, "saildriver") == 0)
  86                 mode = MODE_DRIVER;
  87         else if (strcmp(p, "sail.log") == 0)
  88                 mode = MODE_LOGGER;
  89         else
  90                 mode = MODE_PLAYER;
  91
  92         while ((a = getopt(argc, argv, "dsxlb")) != -1)
  93                 switch (a) {
  94                 case 'd':
  95                         mode = MODE_DRIVER;
  96                         break;
  97                 case 's':
  98                         mode = MODE_LOGGER;
  99                         break;
 100                 case 'x':
 101                         randomize++;
 102                         break;
 103                 case 'l':
 104                         longfmt++;
 105                         break;
 106                 case 'b':
 107                         nobells++;
 108                         break;
 109                 default:
 110                         errx(1, "Usage: %s [-bdlsx] [scenario-number]", p);
 111                 }
 112
 113         argc -= optind;
 114         argv += optind;
 115
 116         if (*argv)
 117                 game = atoi(*argv);
 118         else
 119                 game = -1;
 120
 121         if ((i = setjmp(restart)) != 0)
 122                 mode = i;
 123
 124         switch (mode) {
 125         case MODE_PLAYER:
 126                 return pl_main();
 127         case MODE_DRIVER:
 128                 return dr_main();
 129         case MODE_LOGGER:
 130                 return lo_main();
 131         default:
 132                 warnx("Unknown mode %d", mode);
 133                 abort();
 134         }
 135         /*NOTREACHED*/
 136 }