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snscore.c revision 1.14 
      1 /*	$NetBSD: snscore.c,v 1.14 2003/08/07 09:37:47 agc 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
     35 	The Regents of the University of California.  All rights reserved.\n");
     36 #endif /* not lint */
     37 
     38 #ifndef lint
     39 #if 0
     40 static char sccsid[] = "@(#)snscore.c	8.1 (Berkeley) 7/19/93";
     41 #else
     42 __RCSID("$NetBSD: snscore.c,v 1.14 2003/08/07 09:37:47 agc Exp $");
     43 #endif
     44 #endif /* not lint */
     45 
     46 #include <sys/types.h>
     47 #include <err.h>
     48 #include <pwd.h>
     49 #include <stdio.h>
     50 #include <stdlib.h>
     51 #include <string.h>
     52 #include <unistd.h>
     53 #include "pathnames.h"
     54 
     55 const char *recfile = _PATH_RAWSCORES;
     56 #define MAXPLAYERS 256
     57 
     58 struct	player	{
     59 	short	uids;
     60 	short	scores;
     61 	char	*name;
     62 } players[MAXPLAYERS], temp;
     63 
     64 int	main __P((void));
     65 
     66 int
     67 main()
     68 {
     69 	short	uid, score;
     70 	FILE	*fd;
     71 	int	noplayers;
     72 	int	i, j, notsorted;
     73 	short	whoallbest, allbest;
     74 	const	char *q;
     75 	struct	passwd	*p;
     76 
     77 	/* Revoke setgid privileges */
     78 	setgid(getgid());
     79 
     80 	fd = fopen(recfile, "r");
     81 	if (fd == NULL)
     82 		err(1, "opening `%s'", recfile);
     83 	printf("Snake players scores to date\n");
     84 	if (fread(&whoallbest, sizeof(short), 1, fd) == 0) {
     85 		printf("No scores recorded yet!\n");
     86 		exit(0);
     87 	}
     88 	fread(&allbest, sizeof(short), 1, fd);
     89 	noplayers = 0;
     90 	for (uid = 2; ;uid++) {
     91 		if(fread(&score, sizeof(short), 1, fd) == 0)
     92 			break;
     93 		if (score > 0) {
     94 			if (noplayers > MAXPLAYERS) {
     95 				printf("too many players\n");
     96 				exit(2);
     97 			}
     98 			players[noplayers].uids = uid;
     99 			players[noplayers].scores = score;
    100 			p = getpwuid(uid);
    101 			if (p == NULL)
    102 				continue;
    103 			q = p -> pw_name;
    104 			players[noplayers].name = strdup(q);
    105 			if (players[noplayers].name == NULL)
    106 				err(1, NULL);
    107 			noplayers++;
    108 		}
    109 	}
    110 
    111 	/* bubble sort scores */
    112 	for (notsorted = 1; notsorted; ) {
    113 		notsorted = 0;
    114 		for (i = 0; i < noplayers - 1; i++)
    115 			if (players[i].scores < players[i + 1].scores) {
    116 				temp = players[i];
    117 				players[i] = players[i + 1];
    118 				players[i + 1] = temp;
    119 				notsorted++;
    120 			}
    121 	}
    122 
    123 	j = 1;
    124 	for (i = 0; i < noplayers; i++) {
    125 		printf("%d:\t$%d\t%s\n", j, players[i].scores, players[i].name);
    126 		if (players[i].scores > players[i + 1].scores)
    127 			j = i + 2;
    128 	}
    129 	exit(0);
    130 }
    131