NetBSD/usr.bin/cksum/cksum.c

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/* $NetBSD: cksum.c,v 1.10 1997/10/17 11:36:59 lukem Exp $ */
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/*-
* Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
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*
* This code is derived from software contributed to Berkeley by
* James W. Williams of NASA Goddard Space Flight Center.
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*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1991, 1993\n\
The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
#ifndef lint
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#if 0
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static char sccsid[] = "@(#)cksum.c 8.2 (Berkeley) 4/28/95";
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#endif
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__RCSID("$NetBSD: cksum.c,v 1.10 1997/10/17 11:36:59 lukem Exp $");
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#endif /* not lint */
#include <sys/cdefs.h>
#include <sys/types.h>
#include <err.h>
#include <errno.h>
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#include <fcntl.h>
#include <locale.h>
#include <md5.h>
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
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#include "extern.h"
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int main __P((int, char **));
int md5_digest_file __P((char *));
void requiremd5 __P((const char *));
void usage __P((void));
int
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main(argc, argv)
int argc;
char **argv;
{
register int ch, fd, rval, domd5, dosum, pflag, nomd5stdin;
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u_int32_t len, val;
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char *fn;
int (*cfncn) __P((int, u_int32_t *, u_int32_t *));
void (*pfncn) __P((char *, u_int32_t, u_int32_t));
extern char *__progname;
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cfncn = NULL;
pfncn = NULL;
dosum = domd5 = pflag = nomd5stdin = 0;
setlocale(LC_ALL, "");
if (!strcmp(__progname, "md5"))
domd5 = 1;
else if (!strcmp(__progname, "sum")) {
dosum = 1;
cfncn = csum1;
pfncn = psum1;
} else {
cfncn = crc;
pfncn = pcrc;
}
while ((ch = getopt(argc, argv, "mo:ps:tx")) != -1)
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switch(ch) {
case 'm':
if (dosum) {
warnx("sum mutually exclusive with md5");
usage();
}
domd5 = 1;
break;
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case 'o':
if (domd5) {
warnx("md5 mutually exclusive with sum");
usage();
}
if (!strcmp(optarg, "1")) {
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cfncn = csum1;
pfncn = psum1;
} else if (!strcmp(optarg, "2")) {
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cfncn = csum2;
pfncn = psum2;
} else {
warnx("illegal argument to -o option");
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usage();
}
break;
case 'p':
if (!domd5)
requiremd5("-p");
pflag = 1;
break;
case 's':
if (!domd5)
requiremd5("-s");
nomd5stdin = 1;
MDString(optarg);
break;
case 't':
if (!domd5)
requiremd5("-t");
MDTimeTrial();
nomd5stdin = 1;
break;
case 'x':
if (!domd5)
requiremd5("-x");
MDTestSuite();
nomd5stdin = 1;
break;
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case '?':
default:
usage();
}
argc -= optind;
argv += optind;
fd = STDIN_FILENO;
fn = NULL;
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rval = 0;
do {
if (*argv) {
fn = *argv++;
if (domd5) {
if (md5_digest_file(fn)) {
warn("%s", fn);
rval = 1;
}
continue;
}
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if ((fd = open(fn, O_RDONLY, 0)) < 0) {
warn("%s", fn);
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rval = 1;
continue;
}
} else if (domd5 && !nomd5stdin)
MDFilter(pflag);
if (!domd5) {
if (cfncn(fd, &val, &len)) {
warn("%s", fn ? fn : "stdin");
rval = 1;
} else
pfncn(fn, val, len);
(void)close(fd);
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}
} while (*argv);
exit(rval);
}
int
md5_digest_file(fn)
char *fn;
{
char buf[33], *cp;
cp = MD5File(fn, buf);
if (cp == NULL)
return (1);
printf("MD5 (%s) = %s\n", fn, cp);
return (0);
}
void
requiremd5(flg)
const char *flg;
{
warnx("%s flag requires `md5' or -m", flg);
usage();
}
void
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usage()
{
(void)fprintf(stderr, "usage: cksum [-m | [-o 1 | 2]] [file ...]\n");
(void)fprintf(stderr, " sum [file ...]\n");
(void)fprintf(stderr,
" md5 [-p | -t | -x | -s string] [file ...]\n");
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exit(1);
}