games/sail/pl_1.c

   1 /*      $NetBSD: pl_1.c,v 1.20 2009/03/14 20:14:56 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 #if 0
  35 static char sccsid[] = "@(#)pl_1.c      8.1 (Berkeley) 5/31/93";
  36 #else
  37 __RCSID("$NetBSD: pl_1.c,v 1.20 2009/03/14 20:14:56 dholland Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include <sys/types.h>
  42 #include <sys/wait.h>
  43 #include <signal.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <unistd.h>
  47 #include "extern.h"
  48 #include "player.h"
  49
  50 /*
  51  * If we get here before a ship is chosen, then ms == 0 and
  52  * we don't want to update the score file, or do any Write's either.
  53  * We can assume the sync file is already created and may need
  54  * to be removed.
  55  * Of course, we don't do any more Sync()'s if we got here
  56  * because of a Sync() failure.
  57  */
  58 void
  59 leave(int conditions)
  60 {
  61         signal(SIGHUP, SIG_IGN);
  62         signal(SIGINT, SIG_IGN);
  63         signal(SIGQUIT, SIG_IGN);
  64         signal(SIGALRM, SIG_IGN);
  65         signal(SIGCHLD, SIG_IGN);
  66
  67         if (done_curses) {
  68                 Msg("It looks like you've had it!");
  69                 switch (conditions) {
  70                 case LEAVE_QUIT:
  71                         break;
  72                 case LEAVE_CAPTURED:
  73                         Msg("Your ship was captured.");
  74                         break;
  75                 case LEAVE_HURRICAN:
  76                         Msg("Hurricane!  All ships destroyed.");
  77                         break;
  78                 case LEAVE_DRIVER:
  79                         Msg("The driver died.");
  80                         break;
  81                 case LEAVE_SYNC:
  82                         Msg("Synchronization error.");
  83                         break;
  84                 default:
  85                         Msg("A funny thing happened (%d).", conditions);
  86                 }
  87         } else {
  88                 switch (conditions) {
  89                 case LEAVE_QUIT:
  90                         break;
  91                 case LEAVE_DRIVER:
  92                         printf("The driver died.\n");
  93                         break;
  94                 case LEAVE_FORK:
  95                         break;
  96                 case LEAVE_SYNC:
  97                         printf("Synchronization error\n.");
  98                         break;
  99                 default:
 100                         printf("A funny thing happened (%d).\n",
 101                                 conditions);
 102                 }
 103         }
 104
 105         if (ms != 0) {
 106                 logger(ms);
 107                 if (conditions != LEAVE_SYNC) {
 108                         makemsg(ms, "Captain %s relinquishing.",
 109                                 mf->captain);
 110                         send_end(ms);
 111                         Sync();
 112                 }
 113         }
 114         sync_close(!hasdriver);
 115         sleep(5);
 116         cleanupscreen();
 117         exit(0);
 118 }
 119
 120 /*ARGSUSED*/
 121 void
 122 choke(int n __unused)
 123 {
 124         leave(LEAVE_QUIT);
 125 }
 126
 127 /*ARGSUSED*/
 128 void
 129 child(int n __unused)
 130 {
 131         int status;
 132         int pid;
 133
 134         signal(SIGCHLD, SIG_IGN);
 135         do {
 136                 pid = wait3(&status, WNOHANG, (struct rusage *)0);
 137                 if (pid < 0 || (pid > 0 && !WIFSTOPPED(status)))
 138                         hasdriver = 0;
 139         } while (pid > 0);
 140         signal(SIGCHLD, child);
 141 }