sail/main.c

   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 }