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Annotation of 40BSD/games/zork.c, revision 1.1

1.1     ! root        1: #include <stdio.h>
        !             2: /*
        !             3:  * Dungeon - open UP dungeon
        !             4:  */
        !             5: 
        !             6: #ifdef CHECKUID
        !             7: int users[] = {
        !             8:        522,    /* sa */
        !             9:        164,    /* Leiby */
        !            10:        229,    /* richards */
        !            11:        264,    /* marshall */
        !            12:        1099,   /* wizard */
        !            13:        425,    /* clm */
        !            14:        15,     /* mowle */
        !            15:        32,     /* ghg */
        !            16:        27,     /* qtip (zager) */
        !            17:        530,    /* mike */
        !            18:        16,     /* bc */
        !            19:        333,    /* pdh */
        !            20:        230,    /* wa1yyn */
        !            21:        19,     /* joe
        !            22:        43,     /* bruner */
        !            23:        308,    /* gedeon (watch him closely!) */
        !            24:        429,    /* mayhew */
        !            25:        743,    /* alicia */
        !            26:        367,    /* feather */
        !            27:        85,     /* clark bar */
        !            28:        382,    /* malcolm */
        !            29:        99,     /* jones */
        !            30:        636,    /* gfg */
        !            31:        0 };
        !            32: #endif
        !            33: 
        !            34: main()
        !            35: {
        !            36: 
        !            37:        register int *up;
        !            38:        register uid;
        !            39:        int fd3, fd4, fd5;
        !            40: 
        !            41: #ifdef CHECKUID
        !            42: 
        !            43:        uid = getuid();
        !            44:        for (up=users; *up; up++)
        !            45:                if (*up == uid)
        !            46:                        goto ok;
        !            47:        printf("You are not a Wizard!\n");
        !            48:        exit();
        !            49: #endif
        !            50:        /*
        !            51:         * open up files needed by program
        !            52:         * look in current directory first, then try default names
        !            53:         * The following files must be as follows:
        !            54:         * "dtext.dat" open read-only on fd 3
        !            55:         * "dindex.dat open read-only on fd 4 (maybe this file isn't used)
        !            56:         * "doverlay" open read-only on fd 5 (put this file on fast disk)
        !            57:         */
        !            58:        close(3);
        !            59:        close(4);
        !            60:        close(5);
        !            61:        if ((fd3 = open("dtext.dat", 0)) < 0)
        !            62:                if ((fd3 = open("/usr/games/lib/dtext.dat", 0)) < 0)
        !            63:                        error("Can't open dtext.dat\n");
        !            64: 
        !            65:        if ((fd4 = open("dindex.dat", 0)) < 0)
        !            66:                if ((fd4 = open("/usr/games/lib/dindex.dat", 0)) < 0)
        !            67:                        error("Can' open dindex.dat\n");
        !            68: 
        !            69:        if ((fd5 = open("doverlay", 0)) < 0)
        !            70:                if ((fd5 = open("/tmp/nedtmp/doverlay", 0)) < 0)
        !            71:                        if ((fd5 = open("/usr/games/lib/doverlay", 0)) < 0)
        !            72:                                error("Can't open doverlay\n");
        !            73: 
        !            74:        if (fd3 != 3 || fd4 != 4 || fd5 != 5)
        !            75:                error("Files opened on wrong descriptors\n");
        !            76: 
        !            77:        signal(2,1);
        !            78: 
        !            79:        printf("You are in an open field west of a big white house with a boarded\n");
        !            80:        printf("front door.\n");
        !            81:        printf("There is a small mailbox here.\n>");
        !            82:        fflush(stdout);
        !            83: #ifdef pdp11
        !            84:        execl("dungeon","zork", 0);
        !            85:        execl("/usr/games/lib/dungeon","zork", 0);
        !            86: #else
        !            87:        if( (uid=open("dungeon", 0)) > 0 ) {
        !            88:                close(uid);
        !            89:                execlp("compat", "zork", "dungeon", 0);
        !            90:                execlp("/usr/games/lib/compat", "zork", "dungeon", 0);
        !            91:        }
        !            92:        execlp("compat", "zork", "/usr/games/lib/dungeon", 0);
        !            93:        execlp("/usr/games/lib/compat", "zork", "/usr/games/lib/dungeon", 0);
        !            94: #endif
        !            95:        printf("Can't start dungeons.\n");
        !            96:        exit(0);
        !            97: }
        !            98: error(s)
        !            99: char *s;
        !           100: {
        !           101:        printf("%s", s);
        !           102:        exit(1);
        !           103: }

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