games/robots/score.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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)score.c  8.1 (Berkeley) 5/31/93
  34  * $FreeBSD: src/games/robots/score.c,v 1.5 1999/11/30 03:49:20 billf Exp $
  35  * $DragonFly: src/games/robots/score.c,v 1.3 2006/08/27 21:45:07 pavalos Exp $
  36  */
  37
  38 # include       "robots.h"
  39 # include       <fcntl.h>
  40 # include       <sys/types.h>
  41 # include       <pwd.h>
  42 # include       "pathnames.h"
  43
  44 typedef struct {
  45         int     s_uid;
  46         int     s_score;
  47         char    s_name[MAXNAME];
  48 } SCORE;
  49
  50 typedef struct passwd   PASSWD;
  51
  52 const char      *Scorefile = _PATH_SCORE;
  53
  54 int     Max_per_uid = MAX_PER_UID;
  55
  56 static SCORE    Top[MAXSCORES];
  57
  58 static void     set_name(SCORE *);
  59 static int      cmp_sc(const void *, const void *);
  60
  61 /*
  62  * score:
  63  *      Post the player's score, if reasonable, and then print out the
  64  *      top list.
  65  */
  66 void
  67 score(void)
  68 {
  69         int     inf;
  70         SCORE   *scp;
  71         int     uid;
  72         bool    done_show = FALSE;
  73         static int      numscores, max_uid;
  74
  75         Newscore = FALSE;
  76         if ((inf = open(Scorefile, 2)) < 0) {
  77                 perror(Scorefile);
  78                 return;
  79         }
  80
  81         if (read(inf, &max_uid, sizeof max_uid) == sizeof max_uid)
  82                 read(inf, Top, sizeof Top);
  83         else {
  84                 for (scp = Top; scp < &Top[MAXSCORES]; scp++)
  85                         scp->s_score = -1;
  86                 max_uid = Max_per_uid;
  87         }
  88
  89         uid = getuid();
  90         if (Top[MAXSCORES-1].s_score <= Score) {
  91                 numscores = 0;
  92                 for (scp = Top; scp < &Top[MAXSCORES]; scp++)
  93                         if (scp->s_score < 0 ||
  94                             (scp->s_uid == uid && ++numscores == max_uid)) {
  95                                 if (scp->s_score > Score)
  96                                         break;
  97                                 scp->s_score = Score;
  98                                 scp->s_uid = uid;
  99                                 set_name(scp);
 100                                 Newscore = TRUE;
 101                                 break;
 102                         }
 103                 if (scp == &Top[MAXSCORES]) {
 104                         Top[MAXSCORES-1].s_score = Score;
 105                         Top[MAXSCORES-1].s_uid = uid;
 106                         set_name(&Top[MAXSCORES-1]);
 107                         Newscore = TRUE;
 108                 }
 109                 if (Newscore)
 110                         qsort(Top, MAXSCORES, sizeof Top[0], cmp_sc);
 111         }
 112
 113         if (!Newscore) {
 114                 Full_clear = FALSE;
 115                 close(inf);
 116                 return;
 117         }
 118         else
 119                 Full_clear = TRUE;
 120
 121         for (scp = Top; scp < &Top[MAXSCORES]; scp++) {
 122                 if (scp->s_score < 0)
 123                         break;
 124                 move((scp - Top) + 1, 15);
 125                 if (!done_show && scp->s_uid == uid && scp->s_score == Score)
 126                         standout();
 127                 printw(" %d\t%d\t%-8.8s ", (scp - Top) + 1, scp->s_score, scp->s_name);
 128                 if (!done_show && scp->s_uid == uid && scp->s_score == Score) {
 129                         standend();
 130                         done_show = TRUE;
 131                 }
 132         }
 133         Num_scores = scp - Top;
 134         refresh();
 135
 136         if (Newscore) {
 137                 lseek(inf, 0L, 0);
 138                 write(inf, &max_uid, sizeof max_uid);
 139                 write(inf, Top, sizeof Top);
 140         }
 141         close(inf);
 142 }
 143
 144 static void
 145 set_name(SCORE *scp)
 146 {
 147         PASSWD  *pp;
 148         static char     unk[] = "???";
 149
 150         if ((pp = getpwuid(scp->s_uid)) == NULL)
 151                 pp->pw_name = unk;
 152         strncpy(scp->s_name, pp->pw_name, MAXNAME);
 153 }
 154
 155 /*
 156  * cmp_sc:
 157  *      Compare two scores.
 158  */
 159 static int
 160 cmp_sc(const void *s1, const void *s2)
 161 {
 162         return (((const SCORE *)s2)->s_score - ((const SCORE *)s1)->s_score);
 163 }
 164
 165 /*
 166  * show_score:
 167  *      Show the score list for the '-s' option.
 168  */
 169 void
 170 show_score(void)
 171 {
 172         SCORE   *scp;
 173         int     inf;
 174         static int      max_score;
 175
 176         if ((inf = open(Scorefile, 0)) < 0) {
 177                 perror(Scorefile);
 178                 return;
 179         }
 180
 181         for (scp = Top; scp < &Top[MAXSCORES]; scp++)
 182                 scp->s_score = -1;
 183
 184         read(inf, &max_score, sizeof max_score);
 185         read(inf, Top, sizeof Top);
 186         close(inf);
 187         inf = 1;
 188         for (scp = Top; scp < &Top[MAXSCORES]; scp++)
 189                 if (scp->s_score >= 0)
 190                         printf("%d\t%d\t%.*s\n", inf++, scp->s_score,
 191                             (int)sizeof(scp->s_name), scp->s_name);
 192 }