games: Massive style(9) cleanup commit. Reduces differences to NetBSD.
[dragonfly.git] / games / snake / snscore / snscore.c
1 /*-
2  * Copyright (c) 1980, 1993
3  *      The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * @(#) Copyright (c) 1980, 1993 The Regents of the University of California.  All rights reserved.
30  * @(#)snscore.c        8.1 (Berkeley) 7/19/93
31  * $FreeBSD: src/games/snake/snscore/snscore.c,v 1.5 1999/11/30 03:49:42 billf Exp $
32  * $DragonFly: src/games/snake/snscore/snscore.c,v 1.4 2006/09/03 23:47:56 pavalos Exp $
33  */
34
35 #include <sys/types.h>
36 #include <err.h>
37 #include <pwd.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <unistd.h>
42 #include "pathnames.h"
43
44 const char *recfile = _PATH_RAWSCORES;
45 #define MAXPLAYERS 256
46
47 struct  player  {
48         short   uids;
49         short   scores;
50         char    *name;
51 };
52
53 struct player players[MAXPLAYERS], temp;
54
55 int
56 main(int argc __unused, char *argv[] __unused)
57 {
58         short   uid, score;
59         FILE    *fd;
60         int     noplayers;
61         int     i, j, notsorted;
62         short   whoallbest, allbest;
63         const   char *q;
64         struct  passwd  *p;
65
66         /* Revoke setgid privileges */
67         setgid(getgid());
68
69         fd = fopen(recfile, "r");
70         if (fd == NULL)
71                 err(1, "opening `%s'", recfile);
72         printf("Snake players scores to date\n");
73         if (fread(&whoallbest, sizeof(short), 1, fd) == 0) {
74                 printf("No scores recorded yet!\n");
75                 exit(0);
76         }
77         fread(&allbest, sizeof(short), 1, fd);
78         noplayers = 0;
79         for (uid = 2; ;uid++) {
80                 if(fread(&score, sizeof(short), 1, fd) == 0)
81                         break;
82                 if (score > 0) {
83                         if (noplayers >= MAXPLAYERS) {
84                                 printf("too many players\n");
85                                 exit(2);
86                         }
87                         players[noplayers].uids = uid;
88                         players[noplayers].scores = score;
89                         p = getpwuid(uid);
90                         if (p == NULL)
91                                 continue;
92                         q = p -> pw_name;
93                         players[noplayers].name = strdup(q);
94                         if (players[noplayers].name == NULL)
95                                 err(1, NULL);
96                         noplayers++;
97                 }
98         }
99
100         /* bubble sort scores */
101         for (notsorted = 1; notsorted; ) {
102                 notsorted = 0;
103                 for (i = 0; i < noplayers - 1; i++)
104                         if (players[i].scores < players[i + 1].scores) {
105                                 temp = players[i];
106                                 players[i] = players[i + 1];
107                                 players[i + 1] = temp;
108                                 notsorted++;
109                         }
110         }
111
112         j = 1;
113         for (i = 0; i < noplayers; i++) {
114                 printf("%d:\t$%d\t%s\n", j, players[i].scores, players[i].name);
115                 if (players[i].scores > players[i + 1].scores)
116                         j = i + 2;
117         }
118         exit(0);
119 }