1 /* $OpenBSD: pl_1.c,v 1.13 2019/06/28 13:32:52 deraadt Exp $ */
2 /* $NetBSD: pl_1.c,v 1.3 1995/04/22 10:37:07 cgd Exp $ */
3
4 /*
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/wait.h>
34
35 #include <errno.h>
36 #include <signal.h>
37 #include <stdlib.h>
38 #include <unistd.h>
39
40 #include "extern.h"
41 #include "player.h"
42
43 #ifndef __GNUC__
44 #define __attribute__(x)
45 #endif
46
47 /*
48 * If we get here before a ship is chosen, then ms == 0 and
49 * we don't want to update the score file, or do any Write's either.
50 * We can assume the sync file is already created and may need
51 * to be removed.
52 * Of course, we don't do any more Sync()'s if we got here
53 * because of a Sync() failure.
54 */
55 void
leave(int conditions)56 leave(int conditions)
57 {
58 (void) signal(SIGHUP, SIG_IGN);
59 (void) signal(SIGINT, SIG_IGN);
60 (void) signal(SIGQUIT, SIG_IGN);
61 (void) signal(SIGALRM, SIG_IGN);
62 (void) signal(SIGCHLD, SIG_DFL);
63
64 if (done_curses) {
65 Msg("It looks like you've had it!");
66 switch (conditions) {
67 case LEAVE_QUIT:
68 break;
69 case LEAVE_CAPTURED:
70 Msg("Your ship was captured.");
71 break;
72 case LEAVE_HURRICAN:
73 Msg("Hurricane! All ships destroyed.");
74 break;
75 case LEAVE_DRIVER:
76 Msg("The driver died.");
77 break;
78 case LEAVE_SYNC:
79 Msg("Synchronization error.");
80 break;
81 default:
82 Msg("A funny thing happened (%d).", conditions);
83 }
84 } else {
85 switch (conditions) {
86 case LEAVE_QUIT:
87 break;
88 case LEAVE_DRIVER:
89 printf("The driver died.\n");
90 break;
91 case LEAVE_FORK:
92 perror("fork");
93 break;
94 case LEAVE_SYNC:
95 printf("Synchronization error\n.");
96 break;
97 default:
98 printf("A funny thing happened (%d).\n",
99 conditions);
100 }
101 }
102
103 if (ms != 0) {
104 logger(ms);
105 if (conditions != LEAVE_SYNC) {
106 makemsg(ms, "Captain %s relinquishing.",
107 mf->captain);
108 Write(W_END, ms, 0, 0, 0, 0);
109 (void) Sync();
110 }
111 }
112 sync_close(!hasdriver);
113 sleep(5);
114 cleanupscreen();
115 exit(0);
116 }
117
118 void
choke(int n)119 choke(int n __attribute__((unused)))
120 {
121 leave(LEAVE_QUIT);
122 }
123
124 void
child(int n)125 child(int n __attribute__((unused)))
126 {
127 int status;
128 int pid;
129 int save_errno = errno;
130
131 (void) signal(SIGCHLD, SIG_DFL);
132 do {
133 pid = waitpid((pid_t)-1, &status, WNOHANG);
134 if (pid == -1 || (pid > 0 && !WIFSTOPPED(status)))
135 hasdriver = 0;
136 } while (pid > 0);
137 (void) signal(SIGCHLD, child);
138 errno = save_errno;
139 }
140