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main.c revision 1.21 
      1 /*	$NetBSD: main.c,v 1.21 2003/08/07 09:37:43 agc 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\n\
     35 	The Regents of the University of California.  All rights reserved.\n");
     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 1.21 2003/08/07 09:37:43 agc Exp $");
     43 #endif
     44 #endif /* not lint */
     45 
     46 #include <fcntl.h>
     47 #include <setjmp.h>
     48 #include <stdio.h>
     49 #include <stdlib.h>
     50 #include <string.h>
     51 #include <time.h>
     52 #include <unistd.h>
     53 #include "extern.h"
     54 #include "restart.h"
     55 
     56 int
     57 main(int argc, char **argv)
     58 {
     59 	char *p;
     60 	int a,i;
     61 	int fd;
     62 
     63 	gid = getgid();
     64 	egid = getegid();
     65 	setegid(gid);
     66 
     67 	fd = open("/dev/null", O_RDONLY);
     68 	if (fd < 3)
     69 		exit(1);
     70 	close(fd);
     71 
     72 	srandom((u_long)time(NULL));
     73 
     74 	if ((p = strrchr(*argv, '/')) != NULL)
     75 		p++;
     76 	else
     77 		p = *argv;
     78 
     79 	if (strcmp(p, "driver") == 0 || strcmp(p, "saildriver") == 0)
     80 		mode = MODE_DRIVER;
     81 	else if (strcmp(p, "sail.log") == 0)
     82 		mode = MODE_LOGGER;
     83 	else
     84 		mode = MODE_PLAYER;
     85 
     86 	while ((a = getopt(argc, argv, "dsxlb")) != -1)
     87 		switch (a) {
     88 		case 'd':
     89 			mode = MODE_DRIVER;
     90 			break;
     91 		case 's':
     92 			mode = MODE_LOGGER;
     93 			break;
     94 		case 'x':
     95 			randomize++;
     96 			break;
     97 		case 'l':
     98 			longfmt++;
     99 			break;
    100 		case 'b':
    101 			nobells++;
    102 			break;
    103 		default:
    104 			fprintf(stderr, "SAIL: Unknown flag %s.\n", p);
    105 			exit(1);
    106 		}
    107 
    108 	argc -= optind;
    109 	argv += optind;
    110 
    111 	if (*argv)
    112 		game = atoi(*argv);
    113 	else
    114 		game = -1;
    115 
    116 	if ((i = setjmp(restart)) != 0)
    117 		mode = i;
    118 
    119 	switch (mode) {
    120 	case MODE_PLAYER:
    121 		return pl_main();
    122 	case MODE_DRIVER:
    123 		return dr_main();
    124 	case MODE_LOGGER:
    125 		return lo_main();
    126 	default:
    127 		fprintf(stderr, "SAIL: Unknown mode %d.\n", mode);
    128 		abort();
    129 	}
    130 	/*NOTREACHED*/
    131 }
    132