Remove unnecessary casts, and add necessary ones for printf arguments.

[bsdgames-darwin.git] / wump / wump.c

diff --git a/wump/wump.c b/wump/wump.c
index bcffa5eb43c9043e99e0d8194bdacd9fdf6e5786..c1918920d83585fe2afd320ed391e3e0b145f9dc 100644 (file)
--- a/wump/wump.c
+++ b/wump/wump.c
@@ -1,4 +1,4 @@
-/*     $NetBSD: wump.c,v 1.6 1998/08/30 09:19:41 veego Exp $   */
+/*     $NetBSD: wump.c,v 1.12 1999/09/12 09:02:24 jsm Exp $    */
 
 /*
  * Copyright (c) 1989, 1993
@@ -47,7 +47,7 @@ __COPYRIGHT("@(#) Copyright (c) 1989, 1993\n\
 #if 0
 static char sccsid[] = "@(#)wump.c     8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: wump.c,v 1.6 1998/08/30 09:19:41 veego Exp $");
+__RCSID("$NetBSD: wump.c,v 1.12 1999/09/12 09:02:24 jsm Exp $");
 #endif
 #endif /* not lint */
 
@@ -57,11 +57,14 @@ __RCSID("$NetBSD: wump.c,v 1.6 1998/08/30 09:19:41 veego Exp $");
  * would care to remember.
  */
 
+#include <err.h>
 #include <sys/types.h>
 #include <sys/file.h>
+#include <sys/wait.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <time.h>
 #include <unistd.h>
 #include "pathnames.h"
 
@@ -133,7 +136,7 @@ void        pit_survive __P((void));
 int    shoot __P((char *));
 void   shoot_self __P((void));
 int    take_action __P((void));
-void   usage __P((void));
+void   usage __P((void)) __attribute__((__noreturn__));
 void   wump_kill __P((void));
 int    wump_nearby __P((void));
 
@@ -144,6 +147,9 @@ main(argc, argv)
 {
        int c;
 
+       /* Revoke setgid privileges */
+       setregid(getgid(), getgid());
+
 #ifdef DEBUG
        while ((c = getopt(argc, argv, "a:b:hp:r:t:d")) != -1)
 #else
@@ -718,13 +724,16 @@ int
 int_compare(a, b)
        const void *a, *b;
 {
-       return(*(int *)a < *(int *)b ? -1 : 1);
+       return(*(const int *)a < *(const int *)b ? -1 : 1);
 }
 
 void
 instructions()
 {
-       char buf[120], *p;
+       const char *pager;
+       pid_t pid;
+       int status;
+       int fd;
 
        /*
         * read the instructions file, if needed, and show the user how to
@@ -740,12 +749,26 @@ puff of greasy black smoke! (poof)\n");
                return;
        }
 
-       if (!(p = getenv("PAGER")) ||
-           strlen(p) > sizeof(buf) + strlen(_PATH_WUMPINFO) + 5)
-               p = _PATH_PAGER;
-
-       (void)sprintf(buf, "%s %s", p, _PATH_WUMPINFO);
-       (void)system(buf);
+       if (!isatty(STDOUT_FILENO))
+               pager = "cat";
+       else {
+               if (!(pager = getenv("PAGER")) || (*pager == 0))
+                       pager = _PATH_PAGER;
+       }
+       switch (pid = fork()) {
+       case 0: /* child */
+               if ((fd = open(_PATH_WUMPINFO, O_RDONLY)) == -1)
+                       err(1, "open %s", _PATH_WUMPINFO);
+               if (dup2(fd, STDIN_FILENO) == -1)
+                       err(1, "dup2");
+               (void)execl("/bin/sh", "sh", "-c", pager, NULL);
+               err(1, "exec sh -c %s", pager);
+       case -1:
+               err(1, "fork");
+       default:
+               (void)waitpid(pid, &status, 0);
+               break;
+       }
 }
 
 void