/*      $OpenBSD: main.c,v 1.11 2016/01/08 20:26:33 mestre Exp $        */
/*      $NetBSD: main.c,v 1.3 1995/04/22 10:37:01 cgd Exp $     */

/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <err.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "extern.h"

int
main(int argc, char **argv)
{
        extern char *__progname;
        char *p;
        int i;
        int fd;

        gid = getgid();
        egid = getegid();
        setegid(gid);

        fd = open("/dev/null", O_RDONLY);
        if (fd < 3)
                return 1;
        close(fd);

        p = __progname;
        if (strcmp(p, "driver") == 0 || strcmp(p, "saildriver") == 0)
                mode = MODE_DRIVER;
        else if (strcmp(p, "sail.log") == 0)
                mode = MODE_LOGGER;
        else
                mode = MODE_PLAYER;
        while ((p = *++argv) && *p == '-')
                switch (p[1]) {
                case 'd':
                        mode = MODE_DRIVER;
                        break;
                case 's':
                        mode = MODE_LOGGER;
                        break;
                case 'D':
                        debug++;
                        break;
                case 'x':
                        randomize++;
                        break;
                case 'l':
                        longfmt++;
                        break;
                case 'b':
                        nobells++;
                        break;
                default:
                        errx(1, "unknown flag %s", p);
                }
        if (*argv)
                game = atoi(*argv);
        else
                game = -1;
        if ((i = setjmp(restart)))
                mode = i;
        switch (mode) {
        case MODE_PLAYER:
                pl_main();
        case MODE_DRIVER:
                return dr_main();
        case MODE_LOGGER:
                return lo_main();
        default:
                warnx("Unknown mode %d", mode);
                abort();
        }
}