canfield/cfscores/cfscores.c

   1 /*      $NetBSD: cfscores.c,v 1.14 2008/01/28 02:37:50 dholland Exp $   */
   2
   3 /*
   4  * Copyright (c) 1983, 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) 1983, 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[] = "@(#)cfscores.c  8.1 (Berkeley) 5/31/93";
  41 #else
  42 __RCSID("$NetBSD: cfscores.c,v 1.14 2008/01/28 02:37:50 dholland Exp $");
  43 #endif
  44 #endif /* not lint */
  45
  46 #include <sys/types.h>
  47 #include <err.h>
  48 #include <fcntl.h>
  49 #include <pwd.h>
  50 #include <stdio.h>
  51 #include <stdlib.h>
  52 #include <string.h>
  53 #include <unistd.h>
  54 #include "pathnames.h"
  55
  56 struct betinfo {
  57         long    hand;           /* cost of dealing hand */
  58         long    inspection;     /* cost of inspecting hand */
  59         long    game;           /* cost of buying game */
  60         long    runs;           /* cost of running through hands */
  61         long    information;    /* cost of information */
  62         long    thinktime;      /* cost of thinking time */
  63         long    wins;           /* total winnings */
  64         long    worth;          /* net worth after costs */
  65 };
  66
  67 int dbfd;
  68
  69 void    printuser(const struct passwd *, int);
  70
  71 int
  72 main(int argc, char *argv[])
  73 {
  74         struct passwd *pw;
  75         uid_t uid;
  76
  77         /* Revoke setgid privileges */
  78         setgid(getgid());
  79
  80         if (argc > 2) {
  81                 printf("Usage: cfscores [user]\n");
  82                 exit(1);
  83         }
  84         dbfd = open(_PATH_SCORE, O_RDONLY);
  85         if (dbfd < 0)
  86                 err(2, "open %s", _PATH_SCORE);
  87         setpwent();
  88         if (argc == 1) {
  89                 uid = getuid();
  90                 pw = getpwuid(uid);
  91                 if (pw == 0) {
  92                         printf("You are not listed in the password file?!?\n");
  93                         exit(2);
  94                 }
  95                 printuser(pw, 1);
  96                 exit(0);
  97         }
  98         if (strcmp(argv[1], "-a") == 0) {
  99                 while ((pw = getpwent()) != 0)
 100                         printuser(pw, 0);
 101                 exit(0);
 102         }
 103         pw = getpwnam(argv[1]);
 104         if (pw == 0) {
 105                 printf("User %s unknown\n", argv[1]);
 106                 exit(3);
 107         }
 108         printuser(pw, 1);
 109         exit(0);
 110 }
 111
 112 /*
 113  * print out info for specified password entry
 114  */
 115 void
 116 printuser(const struct passwd *pw, int printfail)
 117 {
 118         struct betinfo total;
 119         off_t pos;
 120         int i;
 121
 122         pos = pw->pw_uid * (off_t)sizeof(struct betinfo);
 123         /* test pos, not pw_uid; uid_t can be unsigned, which makes gcc warn */
 124         if (pos < 0) {
 125                 printf("Bad uid %d\n", (int)pw->pw_uid);
 126                 return;
 127         }
 128         i = lseek(dbfd, pos, SEEK_SET);
 129         if (i < 0)
 130                 warn("lseek %s", _PATH_SCORE);
 131         i = read(dbfd, (char *)&total, sizeof(total));
 132         if (i < 0)
 133                 warn("read %s", _PATH_SCORE);
 134         if (i == 0 || total.hand == 0) {
 135                 if (printfail)
 136                         printf("%s has never played canfield.\n", pw->pw_name);
 137                 return;
 138         }
 139         printf("*----------------------*\n");
 140         if (total.worth >= 0)
 141                 printf("* Winnings for %-8s*\n", pw->pw_name);
 142         else
 143                 printf("* Losses for %-10s*\n", pw->pw_name);
 144         printf("*======================*\n");
 145         printf("|Costs           Total |\n");
 146         printf("| Hands       %8ld |\n", total.hand);
 147         printf("| Inspections %8ld |\n", total.inspection);
 148         printf("| Games       %8ld |\n", total.game);
 149         printf("| Runs        %8ld |\n", total.runs);
 150         printf("| Information %8ld |\n", total.information);
 151         printf("| Think time  %8ld |\n", total.thinktime);
 152         printf("|Total Costs  %8ld |\n", total.wins - total.worth);
 153         printf("|Winnings     %8ld |\n", total.wins);
 154         printf("|Net Worth    %8ld |\n", total.worth);
 155         printf("*----------------------*\n\n");
 156 }