5367f3400c
Games which run setgid from dm, but don't need to, should drop their privileges at startup. Games which have a scorefile should open it at startup, then drop all privileges leaving just the open writable file descriptor. If the game can invoke subprocesses, this should be made close-on-exec. Games with scorefiles should make sure they do not get a file descriptor < 3. (Otherwise, they could get confused and corrupt the scorefile when using stdin, stdout or stderr.) Some old setuid revokes from the days of setuid games change into gid revokes.
96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/* $NetBSD: ppt.c,v 1.6 1999/09/12 09:02:22 jsm Exp $ */
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/*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)ppt.c 8.1 (Berkeley) 5/31/93";
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#else
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__RCSID("$NetBSD: ppt.c,v 1.6 1999/09/12 09:02:22 jsm Exp $");
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#endif
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#endif /* not lint */
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#include <stdio.h>
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#include <unistd.h>
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int main __P((int, char *[]));
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static void putppt __P((int));
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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int c;
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char *p;
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/* Revoke setgid privileges */
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setregid(getgid(), getgid());
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(void) puts("___________");
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if (argc > 1)
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while ((p = *++argv) != NULL)
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for (; *p; ++p)
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putppt((int)*p);
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else while ((c = getchar()) != EOF)
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putppt(c);
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(void) puts("___________");
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exit(0);
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}
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static void
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putppt(c)
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int c;
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{
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int i;
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(void) putchar('|');
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for (i = 7; i >= 0; i--) {
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if (i == 2)
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(void) putchar('.'); /* feed hole */
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if ((c&(1<<i)) != 0)
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(void) putchar('o');
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else
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(void) putchar(' ');
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}
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(void) putchar('|');
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(void) putchar('\n');
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}
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