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cfscores.c revision 1.18 
      1 /*	$NetBSD: cfscores.c,v 1.18 2010/01/01 06:20:45 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\
     35  The Regents of the University of California.  All rights reserved.");
     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 1.18 2010/01/01 06:20:45 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 static int dbfd;
     68 
     69 static 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 		errx(1, "Usage: cfscores -a | cfscores [user]");
     82 	}
     83 	dbfd = open(_PATH_SCORE, O_RDONLY);
     84 	if (dbfd < 0)
     85 		err(2, "open %s", _PATH_SCORE);
     86 	setpwent();
     87 	if (argc == 1) {
     88 		uid = getuid();
     89 		pw = getpwuid(uid);
     90 		if (pw == 0) {
     91 			errx(2, "You are not listed in the password file?!?");
     92 		}
     93 		printuser(pw, 1);
     94 		exit(0);
     95 	}
     96 	if (strcmp(argv[1], "-a") == 0) {
     97 		while ((pw = getpwent()) != 0)
     98 			printuser(pw, 0);
     99 		exit(0);
    100 	}
    101 	pw = getpwnam(argv[1]);
    102 	if (pw == 0) {
    103 		errx(3, "User %s unknown", argv[1]);
    104 	}
    105 	printuser(pw, 1);
    106 	exit(0);
    107 }
    108 
    109 /*
    110  * print out info for specified password entry
    111  */
    112 static void
    113 printuser(const struct passwd *pw, int printfail)
    114 {
    115 	struct betinfo total;
    116 	off_t pos;
    117 	int i;
    118 
    119 	pos = pw->pw_uid * (off_t)sizeof(struct betinfo);
    120 	/* test pos, not pw_uid; uid_t can be unsigned, which makes gcc warn */
    121 	if (pos < 0) {
    122 		warnx("Bad uid %d", (int)pw->pw_uid);
    123 		return;
    124 	}
    125 	i = lseek(dbfd, pos, SEEK_SET);
    126 	if (i < 0)
    127 		warn("lseek %s", _PATH_SCORE);
    128 	i = read(dbfd, (char *)&total, sizeof(total));
    129 	if (i < 0)
    130 		warn("read %s", _PATH_SCORE);
    131 	if (i == 0 || total.hand == 0) {
    132 		if (printfail)
    133 			printf("%s has never played canfield.\n", pw->pw_name);
    134 		return;
    135 	}
    136 	printf("*----------------------*\n");
    137 	if (total.worth >= 0)
    138 		printf("* Winnings for %-8s*\n", pw->pw_name);
    139 	else
    140 		printf("* Losses for %-10s*\n", pw->pw_name);
    141 	printf("*======================*\n");
    142 	printf("|Costs           Total |\n");
    143 	printf("| Hands       %8ld |\n", total.hand);
    144 	printf("| Inspections %8ld |\n", total.inspection);
    145 	printf("| Games       %8ld |\n", total.game);
    146 	printf("| Runs        %8ld |\n", total.runs);
    147 	printf("| Information %8ld |\n", total.information);
    148 	printf("| Think time  %8ld |\n", total.thinktime);
    149 	printf("|Total Costs  %8ld |\n", total.wins - total.worth);
    150 	printf("|Winnings     %8ld |\n", total.wins);
    151 	printf("|Net Worth    %8ld |\n", total.worth);
    152 	printf("*----------------------*\n\n");
    153 }
    154