/*      $NetBSD: main.c,v 1.26 2010/08/06 09:14:40 dholland 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 <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1983, 1993\
 The Regents of the University of California.  All rights reserved.");
#endif /* not lint */

#ifndef lint
#if 0
static char sccsid[] = "@(#)main.c      8.2 (Berkeley) 4/28/95";
#else
__RCSID("$NetBSD: main.c,v 1.26 2010/08/06 09:14:40 dholland Exp $");
#endif
#endif /* not lint */

#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <pwd.h>
#include <setjmp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "extern.h"
#include "pathnames.h"
#include "restart.h"

static void
initialize(void)
{
        int fd;
        const char *name;
        struct passwd *pw;
        char *s;

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

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

        if (chdir(_PATH_SAILDIR) < 0) {
                err(1, "%s", _PATH_SAILDIR);
        }

        srandom((u_long)time(NULL));

        name = getenv("SAILNAME");
        if (name != NULL && *name != '\0') {
                strlcpy(myname, name, sizeof(myname));
        } else {
                pw = getpwuid(getuid());
                if (pw != NULL) {
                        strlcpy(myname, pw->pw_gecos, sizeof(myname));
                        /* trim to just the realname */
                        s = strchr(myname, ',');
                        if (s != NULL) {
                                *s = '\0';
                        }
                        /* use just the first name */
                        s = strchr(myname, ' ');
                        if (s != NULL) {
                                *s = '\0';
                        }
                        /* should really do &-expansion properly */
                        if (!strcmp(myname, "&")) {
                                strlcpy(myname, pw->pw_name, sizeof(myname));
                                myname[0] = toupper((unsigned char)myname[0]);
                        }
                }
        }
        if (*myname == '\0') {
                strlcpy(myname, "Anonymous", sizeof(myname));
        }
}

int
main(int argc, char **argv)
{
        char *p;
        int a, i;

        initialize();

        if ((p = strrchr(*argv, '/')) != NULL)
                p++;
        else
                p = *argv;

        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 ((a = getopt(argc, argv, "dsxlb")) != -1)
                switch (a) {
                case 'd':
                        mode = MODE_DRIVER;
                        break;
                case 's':
                        mode = MODE_LOGGER;
                        break;
                case 'x':
                        randomize = true;
                        break;
                case 'l':
                        longfmt = true;
                        break;
                case 'b':
                        nobells = true;
                        break;
                default:
                        errx(1, "Usage: %s [-bdlsx] [scenario-number]", p);
                }

        argc -= optind;
        argv += optind;

        if (*argv)
                game = atoi(*argv);
        else
                game = -1;

        if ((i = setjmp(restart)) != 0)
                mode = i;

        switch (mode) {
        case MODE_PLAYER:
                initscreen();
                startup();
                cleanupscreen();
                return 0;
        case MODE_DRIVER:
                return dr_main();
        case MODE_LOGGER:
                return lo_main();
        default:
                warnx("Unknown mode %d", mode);
                abort();
        }
        /*NOTREACHED*/
}