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      1 /*	$NetBSD: main.c,v 1.26 2010/08/06 09:14:40 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 1.26 2010/08/06 09:14:40 dholland Exp $");
     43 #endif
     44 #endif /* not lint */
     45 
     46 #include <ctype.h>
     47 #include <err.h>
     48 #include <fcntl.h>
     49 #include <pwd.h>
     50 #include <setjmp.h>
     51 #include <stdio.h>
     52 #include <stdlib.h>
     53 #include <string.h>
     54 #include <time.h>
     55 #include <unistd.h>
     56 #include "extern.h"
     57 #include "pathnames.h"
     58 #include "restart.h"
     59 
     60 static void
     61 initialize(void)
     62 {
     63 	int fd;
     64 	const char *name;
     65 	struct passwd *pw;
     66 	char *s;
     67 
     68 	gid = getgid();
     69 	egid = getegid();
     70 	setegid(gid);
     71 
     72 	fd = open("/dev/null", O_RDONLY);
     73 	if (fd < 3)
     74 		exit(1);
     75 	close(fd);
     76 
     77 	if (chdir(_PATH_SAILDIR) < 0) {
     78 		err(1, "%s", _PATH_SAILDIR);
     79 	}
     80 
     81 	srandom((u_long)time(NULL));
     82 
     83 	name = getenv("SAILNAME");
     84 	if (name != NULL && *name != '\0') {
     85 		strlcpy(myname, name, sizeof(myname));
     86 	} else {
     87 		pw = getpwuid(getuid());
     88 		if (pw != NULL) {
     89 			strlcpy(myname, pw->pw_gecos, sizeof(myname));
     90 			/* trim to just the realname */
     91 			s = strchr(myname, ',');
     92 			if (s != NULL) {
     93 				*s = '\0';
     94 			}
     95 			/* use just the first name */
     96 			s = strchr(myname, ' ');
     97 			if (s != NULL) {
     98 				*s = '\0';
     99 			}
    100 			/* should really do &-expansion properly */
    101 			if (!strcmp(myname, "&")) {
    102 				strlcpy(myname, pw->pw_name, sizeof(myname));
    103 				myname[0] = toupper((unsigned char)myname[0]);
    104 			}
    105 		}
    106 	}
    107 	if (*myname == '\0') {
    108 		strlcpy(myname, "Anonymous", sizeof(myname));
    109 	}
    110 }
    111 
    112 int
    113 main(int argc, char **argv)
    114 {
    115 	char *p;
    116 	int a, i;
    117 
    118 	initialize();
    119 
    120 	if ((p = strrchr(*argv, '/')) != NULL)
    121 		p++;
    122 	else
    123 		p = *argv;
    124 
    125 	if (strcmp(p, "driver") == 0 || strcmp(p, "saildriver") == 0)
    126 		mode = MODE_DRIVER;
    127 	else if (strcmp(p, "sail.log") == 0)
    128 		mode = MODE_LOGGER;
    129 	else
    130 		mode = MODE_PLAYER;
    131 
    132 	while ((a = getopt(argc, argv, "dsxlb")) != -1)
    133 		switch (a) {
    134 		case 'd':
    135 			mode = MODE_DRIVER;
    136 			break;
    137 		case 's':
    138 			mode = MODE_LOGGER;
    139 			break;
    140 		case 'x':
    141 			randomize = true;
    142 			break;
    143 		case 'l':
    144 			longfmt = true;
    145 			break;
    146 		case 'b':
    147 			nobells = true;
    148 			break;
    149 		default:
    150 			errx(1, "Usage: %s [-bdlsx] [scenario-number]", p);
    151 		}
    152 
    153 	argc -= optind;
    154 	argv += optind;
    155 
    156 	if (*argv)
    157 		game = atoi(*argv);
    158 	else
    159 		game = -1;
    160 
    161 	if ((i = setjmp(restart)) != 0)
    162 		mode = i;
    163 
    164 	switch (mode) {
    165 	case MODE_PLAYER:
    166 		initscreen();
    167 		startup();
    168 		cleanupscreen();
    169 		return 0;
    170 	case MODE_DRIVER:
    171 		return dr_main();
    172 	case MODE_LOGGER:
    173 		return lo_main();
    174 	default:
    175 		warnx("Unknown mode %d", mode);
    176 		abort();
    177 	}
    178 	/*NOTREACHED*/
    179 }
    180