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.
555 lines
12 KiB
C
555 lines
12 KiB
C
/* $NetBSD: main.c,v 1.8 1999/09/12 09:02:21 jsm Exp $ */
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/*
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* Copyright (c) 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell.
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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) 1994\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[] = "@(#)main.c 8.4 (Berkeley) 5/4/95";
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#else
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__RCSID("$NetBSD: main.c,v 1.8 1999/09/12 09:02:21 jsm Exp $");
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#endif
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#endif /* not lint */
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#include <curses.h>
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#include <err.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "gomoku.h"
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#define USER 0 /* get input from standard input */
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#define PROGRAM 1 /* get input from program */
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#define INPUTF 2 /* get input from a file */
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int interactive = 1; /* true if interactive */
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int debug; /* true if debugging */
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int test; /* both moves come from 1: input, 2: computer */
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char *prog; /* name of program */
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FILE *debugfp; /* file for debug output */
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FILE *inputfp; /* file for debug input */
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const char pdir[4] = "-\\|/";
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char fmtbuf[128];
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struct spotstr board[BAREA]; /* info for board */
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struct combostr frames[FAREA]; /* storage for all frames */
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struct combostr *sortframes[2]; /* sorted list of non-empty frames */
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u_char overlap[FAREA * FAREA]; /* true if frame [a][b] overlap */
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short intersect[FAREA * FAREA]; /* frame [a][b] intersection */
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int movelog[BSZ * BSZ]; /* log of all the moves */
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int movenum; /* current move number */
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const char *plyr[2]; /* who's who */
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int main __P((int, char *[]));
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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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char buf[128];
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int color, curmove, i, ch;
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int input[2];
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static const char *const fmt[2] = {
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"%3d %-6s",
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"%3d %-6s"
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};
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/* Revoke setgid privileges */
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setregid(getgid(), getgid());
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color = curmove = 0;
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prog = strrchr(argv[0], '/');
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if (prog)
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prog++;
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else
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prog = argv[0];
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while ((ch = getopt(argc, argv, "bcdD:u")) != -1) {
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switch (ch) {
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case 'b': /* background */
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interactive = 0;
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break;
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case 'd': /* debugging */
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debug++;
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break;
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case 'D': /* log debug output to file */
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if ((debugfp = fopen(optarg, "w")) == NULL)
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err(1, "%s", optarg);
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break;
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case 'u': /* testing: user verses user */
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test = 1;
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break;
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case 'c': /* testing: computer verses computer */
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test = 2;
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break;
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}
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}
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argc -= optind;
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argv += optind;
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if (argc) {
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if ((inputfp = fopen(*argv, "r")) == NULL)
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err(1, "%s", *argv);
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}
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if (!debug)
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#ifdef SVR4
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srand(time(0));
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#else
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srandom(time(0));
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#endif
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if (interactive)
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cursinit(); /* initialize curses */
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again:
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bdinit(board); /* initialize board contents */
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if (interactive) {
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plyr[BLACK] = plyr[WHITE] = "???";
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bdisp_init(); /* initialize display of board */
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#ifdef DEBUG
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signal(SIGINT, whatsup);
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#else
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signal(SIGINT, quitsig);
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#endif
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if (inputfp == NULL && test == 0) {
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for (;;) {
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ask("black or white? ");
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getline(buf, sizeof(buf));
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if (buf[0] == 'b' || buf[0] == 'B') {
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color = BLACK;
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break;
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}
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if (buf[0] == 'w' || buf[0] == 'W') {
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color = WHITE;
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break;
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}
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move(22, 0);
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printw("Black moves first. Please enter `black' or `white'\n");
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}
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move(22, 0);
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clrtoeol();
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}
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} else {
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setbuf(stdout, 0);
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getline(buf, sizeof(buf));
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if (strcmp(buf, "black") == 0)
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color = BLACK;
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else if (strcmp(buf, "white") == 0)
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color = WHITE;
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else {
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sprintf(fmtbuf,
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"Huh? Expected `black' or `white', got `%s'\n",
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buf);
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panic(fmtbuf);
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}
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}
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if (inputfp) {
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input[BLACK] = INPUTF;
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input[WHITE] = INPUTF;
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} else {
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switch (test) {
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case 0: /* user verses program */
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input[color] = USER;
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input[!color] = PROGRAM;
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break;
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case 1: /* user verses user */
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input[BLACK] = USER;
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input[WHITE] = USER;
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break;
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case 2: /* program verses program */
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input[BLACK] = PROGRAM;
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input[WHITE] = PROGRAM;
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break;
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}
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}
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if (interactive) {
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plyr[BLACK] = input[BLACK] == USER ? "you" : prog;
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plyr[WHITE] = input[WHITE] == USER ? "you" : prog;
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bdwho(1);
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}
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for (color = BLACK; ; color = !color) {
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top:
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switch (input[color]) {
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case INPUTF: /* input comes from a file */
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curmove = readinput(inputfp);
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if (curmove != ILLEGAL)
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break;
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switch (test) {
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case 0: /* user verses program */
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input[color] = USER;
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input[!color] = PROGRAM;
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break;
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case 1: /* user verses user */
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input[BLACK] = USER;
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input[WHITE] = USER;
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break;
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case 2: /* program verses program */
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input[BLACK] = PROGRAM;
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input[WHITE] = PROGRAM;
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break;
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}
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plyr[BLACK] = input[BLACK] == USER ? "you" : prog;
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plyr[WHITE] = input[WHITE] == USER ? "you" : prog;
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bdwho(1);
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goto top;
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case USER: /* input comes from standard input */
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getinput:
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if (interactive)
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ask("move? ");
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if (!getline(buf, sizeof(buf))) {
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curmove = RESIGN;
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break;
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}
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if (buf[0] == '\0')
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goto getinput;
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curmove = ctos(buf);
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if (interactive) {
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if (curmove == SAVE) {
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FILE *fp;
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ask("save file name? ");
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(void)getline(buf, sizeof(buf));
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if ((fp = fopen(buf, "w")) == NULL) {
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log("cannot create save file");
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goto getinput;
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}
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for (i = 0; i < movenum - 1; i++)
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fprintf(fp, "%s\n",
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stoc(movelog[i]));
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fclose(fp);
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goto getinput;
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}
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if (curmove != RESIGN &&
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board[curmove].s_occ != EMPTY) {
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log("Illegal move");
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goto getinput;
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}
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}
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break;
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case PROGRAM: /* input comes from the program */
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curmove = pickmove(color);
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break;
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}
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if (interactive) {
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sprintf(fmtbuf, fmt[color], movenum, stoc(curmove));
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log(fmtbuf);
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}
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if ((i = makemove(color, curmove)) != MOVEOK)
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break;
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if (interactive)
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bdisp();
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}
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if (interactive) {
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move(22, 0);
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switch (i) {
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case WIN:
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if (input[color] == PROGRAM)
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addstr("Ha ha, I won");
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else
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addstr("Rats! you won");
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break;
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case TIE:
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addstr("Wow! its a tie");
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break;
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case ILLEGAL:
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addstr("Illegal move");
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break;
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}
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clrtoeol();
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bdisp();
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if (i != RESIGN) {
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replay:
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ask("replay? ");
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if (getline(buf, sizeof(buf)) &&
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(buf[0] == 'y' || buf[0] == 'Y'))
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goto again;
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if (strcmp(buf, "save") == 0) {
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FILE *fp;
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ask("save file name? ");
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(void)getline(buf, sizeof(buf));
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if ((fp = fopen(buf, "w")) == NULL) {
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log("cannot create save file");
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goto replay;
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}
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for (i = 0; i < movenum - 1; i++)
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fprintf(fp, "%s\n",
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stoc(movelog[i]));
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fclose(fp);
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goto replay;
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}
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}
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}
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quit();
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/* NOTREACHED */
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return(0);
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}
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int
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readinput(fp)
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FILE *fp;
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{
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char *cp;
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int c;
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cp = fmtbuf;
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while ((c = getc(fp)) != EOF && c != '\n')
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*cp++ = c;
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*cp = '\0';
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return (ctos(fmtbuf));
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}
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#ifdef DEBUG
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/*
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* Handle strange situations.
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*/
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void
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whatsup(signum)
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int signum;
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{
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int i, pnum, n, s1, s2, d1, d2;
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struct spotstr *sp;
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FILE *fp;
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char *str;
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struct elist *ep;
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struct combostr *cbp;
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if (!interactive)
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quit();
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top:
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ask("cmd? ");
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if (!getline(fmtbuf, sizeof(fmtbuf)))
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quit();
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switch (*fmtbuf) {
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case '\0':
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goto top;
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case 'q': /* conservative quit */
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quit();
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case 'd': /* set debug level */
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debug = fmtbuf[1] - '0';
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sprintf(fmtbuf, "Debug set to %d", debug);
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dlog(fmtbuf);
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sleep(1);
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case 'c':
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break;
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case 'b': /* back up a move */
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if (movenum > 1) {
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movenum--;
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board[movelog[movenum - 1]].s_occ = EMPTY;
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bdisp();
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}
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goto top;
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case 's': /* suggest a move */
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i = fmtbuf[1] == 'b' ? BLACK : WHITE;
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sprintf(fmtbuf, "suggest %c %s", i == BLACK ? 'B' : 'W',
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stoc(pickmove(i)));
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dlog(fmtbuf);
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goto top;
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case 'f': /* go forward a move */
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board[movelog[movenum - 1]].s_occ = movenum & 1 ? BLACK : WHITE;
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movenum++;
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bdisp();
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goto top;
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case 'l': /* print move history */
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if (fmtbuf[1] == '\0') {
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for (i = 0; i < movenum - 1; i++)
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dlog(stoc(movelog[i]));
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goto top;
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}
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if ((fp = fopen(fmtbuf + 1, "w")) == NULL)
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goto top;
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for (i = 0; i < movenum - 1; i++) {
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fprintf(fp, "%s", stoc(movelog[i]));
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if (++i < movenum - 1)
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fprintf(fp, " %s\n", stoc(movelog[i]));
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else
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fputc('\n', fp);
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}
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bdump(fp);
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fclose(fp);
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goto top;
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case 'o':
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n = 0;
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for (str = fmtbuf + 1; *str; str++)
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if (*str == ',') {
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for (d1 = 0; d1 < 4; d1++)
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if (str[-1] == pdir[d1])
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break;
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str[-1] = '\0';
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sp = &board[s1 = ctos(fmtbuf + 1)];
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n = (sp->s_frame[d1] - frames) * FAREA;
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*str++ = '\0';
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break;
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}
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sp = &board[s2 = ctos(str)];
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while (*str)
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str++;
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for (d2 = 0; d2 < 4; d2++)
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if (str[-1] == pdir[d2])
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break;
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n += sp->s_frame[d2] - frames;
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str = fmtbuf;
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sprintf(str, "overlap %s%c,", stoc(s1), pdir[d1]);
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str += strlen(str);
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sprintf(str, "%s%c = %x", stoc(s2), pdir[d2], overlap[n]);
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dlog(fmtbuf);
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goto top;
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case 'p':
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sp = &board[i = ctos(fmtbuf + 1)];
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sprintf(fmtbuf, "V %s %x/%d %d %x/%d %d %d %x", stoc(i),
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sp->s_combo[BLACK].s, sp->s_level[BLACK],
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sp->s_nforce[BLACK],
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sp->s_combo[WHITE].s, sp->s_level[WHITE],
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sp->s_nforce[WHITE], sp->s_wval, sp->s_flg);
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dlog(fmtbuf);
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sprintf(fmtbuf, "FB %s %x %x %x %x", stoc(i),
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sp->s_fval[BLACK][0].s, sp->s_fval[BLACK][1].s,
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sp->s_fval[BLACK][2].s, sp->s_fval[BLACK][3].s);
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dlog(fmtbuf);
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sprintf(fmtbuf, "FW %s %x %x %x %x", stoc(i),
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sp->s_fval[WHITE][0].s, sp->s_fval[WHITE][1].s,
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sp->s_fval[WHITE][2].s, sp->s_fval[WHITE][3].s);
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dlog(fmtbuf);
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goto top;
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case 'e': /* e {b|w} [0-9] spot */
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str = fmtbuf + 1;
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if (*str >= '0' && *str <= '9')
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n = *str++ - '0';
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else
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n = 0;
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sp = &board[i = ctos(str)];
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for (ep = sp->s_empty; ep; ep = ep->e_next) {
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cbp = ep->e_combo;
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if (n) {
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if (cbp->c_nframes > n)
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continue;
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if (cbp->c_nframes != n)
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break;
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}
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printcombo(cbp, fmtbuf);
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dlog(fmtbuf);
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}
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goto top;
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default:
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syntax:
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dlog("Options are:");
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dlog("q - quit");
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dlog("c - continue");
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dlog("d# - set debug level to #");
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dlog("p# - print values at #");
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goto top;
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}
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}
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#endif /* DEBUG */
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/*
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* Display debug info.
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*/
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void
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dlog(str)
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const char *str;
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{
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if (debugfp)
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fprintf(debugfp, "%s\n", str);
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if (interactive)
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dislog(str);
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else
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fprintf(stderr, "%s\n", str);
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}
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|
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void
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log(str)
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const char *str;
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{
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if (debugfp)
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fprintf(debugfp, "%s\n", str);
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if (interactive)
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dislog(str);
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else
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printf("%s\n", str);
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}
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|
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void
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quit()
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{
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if (interactive) {
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bdisp(); /* show final board */
|
|
cursfini();
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
void
|
|
quitsig(dummy)
|
|
int dummy __attribute__((__unused__));
|
|
{
|
|
quit();
|
|
}
|
|
|
|
/*
|
|
* Die gracefully.
|
|
*/
|
|
void
|
|
panic(str)
|
|
const char *str;
|
|
{
|
|
fprintf(stderr, "%s: %s\n", prog, str);
|
|
fputs("resign\n", stdout);
|
|
quit();
|
|
}
|