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snscore.c revision 1.13 
      1 /*	$NetBSD: snscore.c,v 1.13 2000/05/08 07:56:05 mycroft Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1980, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
     39 	The Regents of the University of California.  All rights reserved.\n");
     40 #endif /* not lint */
     41 
     42 #ifndef lint
     43 #if 0
     44 static char sccsid[] = "@(#)snscore.c	8.1 (Berkeley) 7/19/93";
     45 #else
     46 __RCSID("$NetBSD: snscore.c,v 1.13 2000/05/08 07:56:05 mycroft Exp $");
     47 #endif
     48 #endif /* not lint */
     49 
     50 #include <sys/types.h>
     51 #include <err.h>
     52 #include <pwd.h>
     53 #include <stdio.h>
     54 #include <stdlib.h>
     55 #include <string.h>
     56 #include <unistd.h>
     57 #include "pathnames.h"
     58 
     59 const char *recfile = _PATH_RAWSCORES;
     60 #define MAXPLAYERS 256
     61 
     62 struct	player	{
     63 	short	uids;
     64 	short	scores;
     65 	char	*name;
     66 } players[MAXPLAYERS], temp;
     67 
     68 int	main __P((void));
     69 
     70 int
     71 main()
     72 {
     73 	short	uid, score;
     74 	FILE	*fd;
     75 	int	noplayers;
     76 	int	i, j, notsorted;
     77 	short	whoallbest, allbest;
     78 	const	char *q;
     79 	struct	passwd	*p;
     80 
     81 	/* Revoke setgid privileges */
     82 	setgid(getgid());
     83 
     84 	fd = fopen(recfile, "r");
     85 	if (fd == NULL)
     86 		err(1, "opening `%s'", recfile);
     87 	printf("Snake players scores to date\n");
     88 	if (fread(&whoallbest, sizeof(short), 1, fd) == 0) {
     89 		printf("No scores recorded yet!\n");
     90 		exit(0);
     91 	}
     92 	fread(&allbest, sizeof(short), 1, fd);
     93 	noplayers = 0;
     94 	for (uid = 2; ;uid++) {
     95 		if(fread(&score, sizeof(short), 1, fd) == 0)
     96 			break;
     97 		if (score > 0) {
     98 			if (noplayers > MAXPLAYERS) {
     99 				printf("too many players\n");
    100 				exit(2);
    101 			}
    102 			players[noplayers].uids = uid;
    103 			players[noplayers].scores = score;
    104 			p = getpwuid(uid);
    105 			if (p == NULL)
    106 				continue;
    107 			q = p -> pw_name;
    108 			players[noplayers].name = strdup(q);
    109 			if (players[noplayers].name == NULL)
    110 				err(1, NULL);
    111 			noplayers++;
    112 		}
    113 	}
    114 
    115 	/* bubble sort scores */
    116 	for (notsorted = 1; notsorted; ) {
    117 		notsorted = 0;
    118 		for (i = 0; i < noplayers - 1; i++)
    119 			if (players[i].scores < players[i + 1].scores) {
    120 				temp = players[i];
    121 				players[i] = players[i + 1];
    122 				players[i + 1] = temp;
    123 				notsorted++;
    124 			}
    125 	}
    126 
    127 	j = 1;
    128 	for (i = 0; i < noplayers; i++) {
    129 		printf("%d:\t$%d\t%s\n", j, players[i].scores, players[i].name);
    130 		if (players[i].scores > players[i + 1].scores)
    131 			j = i + 2;
    132 	}
    133 	exit(0);
    134 }
    135