NetBSD-5.0.2/usr.bin/cksum/cksum.c
/* $NetBSD: cksum.c,v 1.43 2008/10/08 03:55:05 lukem Exp $ */
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* James W. Williams of NASA Goddard Space Flight Center.
*
* 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. 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.
*/
/*-
* Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* James W. Williams of NASA Goddard Space Flight Center.
*
* 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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#if defined(__COPYRIGHT) && !defined(lint)
__COPYRIGHT("@(#) Copyright (c) 1991, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#if defined(__RCSID) && !defined(lint)
#if 0
static char sccsid[] = "@(#)cksum.c 8.2 (Berkeley) 4/28/95";
#endif
__RCSID("$NetBSD: cksum.c,v 1.43 2008/10/08 03:55:05 lukem Exp $");
#endif /* not lint */
#include <sys/types.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <locale.h>
#include <md5.h>
#include <md4.h>
#include <md2.h>
#include <sha1.h>
#include <sha2.h>
#include <rmd160.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "extern.h"
#define HASH_MD2 0
#define HASH_MD4 1
#define HASH_MD5 2
#define HASH_SHA1 3
#define HASH_RMD160 4
typedef char *(*_filefunc)(const char *, char *);
const struct hash {
const char *progname;
const char *hashname;
void (*stringfunc)(const char *);
void (*timetrialfunc)(void);
void (*testsuitefunc)(void);
void (*filterfunc)(int);
char *(*filefunc)(const char *, char *);
} hashes[] = {
{ "md2", "MD2",
MD2String, MD2TimeTrial, MD2TestSuite,
MD2Filter, MD2File },
{ "md4", "MD4",
MD4String, MD4TimeTrial, MD4TestSuite,
MD4Filter, MD4File },
{ "md5", "MD5",
MD5String, MD5TimeTrial, MD5TestSuite,
MD5Filter, MD5File },
{ "sha1", "SHA1",
SHA1String, SHA1TimeTrial, SHA1TestSuite,
SHA1Filter, (_filefunc) SHA1File },
{ "rmd160", "RMD160",
RMD160String, RMD160TimeTrial, RMD160TestSuite,
RMD160Filter, (_filefunc) RMD160File },
{ "sha256", "SHA256",
SHA256_String, SHA256_TimeTrial, SHA256_TestSuite,
SHA256_Filter, (_filefunc) SHA256_File },
{ "sha384", "SHA384",
SHA384_String, SHA384_TimeTrial, SHA384_TestSuite,
SHA384_Filter, (_filefunc) SHA384_File },
{ "sha512", "SHA512",
SHA512_String, SHA512_TimeTrial, SHA512_TestSuite,
SHA512_Filter, (_filefunc) SHA512_File },
{ .progname = NULL, },
};
int hash_digest_file(char *, const struct hash *, int);
void requirehash(const char *);
void usage(void);
int
main(int argc, char **argv)
{
int ch, fd, rval, dosum, pflag, nohashstdin;
u_int32_t val;
off_t len;
char *fn;
const char *progname;
int (*cfncn) (int, u_int32_t *, off_t *);
void (*pfncn) (char *, u_int32_t, off_t);
const struct hash *hash;
int normal, i, check_warn, do_check;
cfncn = NULL;
pfncn = NULL;
dosum = pflag = nohashstdin = 0;
normal = 0;
check_warn = 0;
do_check = 0;
setlocale(LC_ALL, "");
progname = getprogname();
for (hash = hashes; hash->hashname != NULL; hash++)
if (strcmp(progname, hash->progname) == 0)
break;
if (hash->hashname == NULL) {
hash = NULL;
if (!strcmp(progname, "sum")) {
dosum = 1;
cfncn = csum1;
pfncn = psum1;
} else {
cfncn = crc;
pfncn = pcrc;
}
}
while ((ch = getopt(argc, argv, "a:cno:ps:twx")) != -1)
switch(ch) {
case 'a':
if (hash != NULL || dosum) {
warnx("illegal use of -a option\n");
usage();
}
i = 0;
while (hashes[i].hashname != NULL) {
if (!strcasecmp(hashes[i].hashname, optarg)) {
hash = &hashes[i];
break;
}
i++;
}
if (hash == NULL) {
if (!strcasecmp(optarg, "old1")) {
cfncn = csum1;
pfncn = psum1;
} else if (!strcasecmp(optarg, "old2")) {
cfncn = csum2;
pfncn = psum2;
} else if (!strcasecmp(optarg, "crc")) {
cfncn = crc;
pfncn = pcrc;
} else {
warnx("illegal argument to -a option");
usage();
}
}
break;
case 'c':
do_check = 1;
break;
case 'n':
normal = 1;
break;
case 'o':
if (hash) {
warnx("%s mutually exclusive with sum",
hash->hashname);
usage();
}
if (!strcmp(optarg, "1")) {
cfncn = csum1;
pfncn = psum1;
} else if (!strcmp(optarg, "2")) {
cfncn = csum2;
pfncn = psum2;
} else {
warnx("illegal argument to -o option");
usage();
}
break;
case 'p':
if (hash == NULL)
requirehash("-p");
pflag = 1;
break;
case 's':
if (hash == NULL)
requirehash("-s");
nohashstdin = 1;
hash->stringfunc(optarg);
break;
case 't':
if (hash == NULL)
requirehash("-t");
nohashstdin = 1;
hash->timetrialfunc();
break;
case 'w':
check_warn = 1;
break;
case 'x':
if (hash == NULL)
requirehash("-x");
nohashstdin = 1;
hash->testsuitefunc();
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (do_check) {
/*
* Verify checksums
*/
FILE *f;
char buf[BUFSIZ];
char *s, *p_filename, *p_cksum;
int l_filename, l_cksum;
char filename[BUFSIZ];
char cksum[BUFSIZ];
int ok,cnt,badcnt;
rval = 0;
cnt = badcnt = 0;
if (argc == 0) {
f = fdopen(STDIN_FILENO, "r");
} else {
f = fopen(argv[0], "r");
}
if (f == NULL)
err(1, "Cannot read %s",
argc>0?argv[0]:"stdin");
while(fgets(buf, sizeof(buf), f) != NULL) {
s=strrchr(buf, '\n');
if (s)
*s = '\0';
p_cksum = p_filename = NULL;
p_filename = strchr(buf, '(');
if (p_filename) {
/*
* Assume 'normal' output if there's a '('
*/
p_filename += 1;
normal = 0;
p_cksum = strrchr(p_filename, ')');
if (p_cksum == NULL) {
if (check_warn)
warnx("bogus format: %s. "
"Skipping...",
buf);
rval = 1;
continue;
}
p_cksum += 4;
l_cksum = strlen(p_cksum);
l_filename = p_cksum - p_filename - 4;
/* Sanity check, and find proper hash if
* it's not the same as the current program
*/
if (hash == NULL ||
strncmp(buf, hash->hashname,
strlen(hash->hashname)) != 0) {
/*
* Search proper hash
*/
const struct hash *nhash;
for (nhash = hashes ;
nhash->hashname != NULL;
nhash++)
if (strncmp(buf,
nhash->hashname,
strlen(nhash->hashname)) == 0)
break;
if (nhash->hashname == NULL) {
if (check_warn)
warnx("unknown hash: %s",
buf);
rval = 1;
continue;
} else {
hash = nhash;
}
}
} else {
if (hash) {
int nspaces;
/*
* 'normal' output, no (ck)sum
*/
normal = 1;
nspaces = 1;
p_cksum = buf;
p_filename = strchr(buf, ' ');
if (p_filename == NULL) {
if (check_warn)
warnx("no filename in %s? "
"Skipping...", buf);
rval = 1;
continue;
}
while (isspace((int)*++p_filename))
nspaces++;
l_filename = strlen(p_filename);
l_cksum = p_filename - buf - nspaces;
} else {
/*
* sum/cksum output format
*/
p_cksum = buf;
s=strchr(p_cksum, ' ');
if (s == NULL) {
if (check_warn)
warnx("bogus format: %s."
" Skipping...",
buf);
rval = 1;
continue;
}
l_cksum = s - p_cksum;
p_filename = strrchr(buf, ' ');
if (p_filename == NULL) {
if (check_warn)
warnx("no filename in %s?"
" Skipping...",
buf);
rval = 1;
continue;
}
p_filename++;
l_filename = strlen(p_filename);
}
}
strlcpy(filename, p_filename, l_filename+1);
strlcpy(cksum, p_cksum, l_cksum+1);
if (hash) {
if (access(filename, R_OK) == 0
&& strcmp(cksum, hash->filefunc(filename, NULL)) == 0)
ok = 1;
else
ok = 0;
} else {
if ((fd = open(filename, O_RDONLY, 0)) < 0) {
if (check_warn)
warn("%s", filename);
rval = 1;
ok = 0;
} else {
if (cfncn(fd, &val, &len))
ok = 0;
else {
u_int32_t should_val;
should_val =
strtoul(cksum, NULL, 10);
if (val == should_val)
ok = 1;
else
ok = 0;
}
close(fd);
}
}
if (! ok) {
if (hash)
printf("(%s) ", hash->hashname);
printf("%s: FAILED\n", filename);
badcnt++;
}
cnt++;
}
fclose(f);
if (badcnt > 0)
rval = 1;
} else {
/*
* Calculate checksums
*/
fd = STDIN_FILENO;
fn = NULL;
rval = 0;
do {
if (*argv) {
fn = *argv++;
if (hash != NULL) {
if (hash_digest_file(fn, hash, normal)) {
warn("%s", fn);
rval = 1;
}
continue;
}
if ((fd = open(fn, O_RDONLY, 0)) < 0) {
warn("%s", fn);
rval = 1;
continue;
}
} else if (hash && !nohashstdin) {
hash->filterfunc(pflag);
}
if (hash == NULL) {
if (cfncn(fd, &val, &len)) {
warn("%s", fn ? fn : "stdin");
rval = 1;
} else
pfncn(fn, val, len);
(void)close(fd);
}
} while (*argv);
}
exit(rval);
}
int
hash_digest_file(char *fn, const struct hash *hash, int normal)
{
char *cp;
cp = hash->filefunc(fn, NULL);
if (cp == NULL)
return 1;
if (normal)
printf("%s %s\n", cp, fn);
else
printf("%s (%s) = %s\n", hash->hashname, fn, cp);
free(cp);
return 0;
}
void
requirehash(const char *flg)
{
warnx("%s flag requires `md2', `md4', `md5', `sha1', or `rmd160'",
flg);
usage();
}
void
usage(void)
{
(void)fprintf(stderr, "usage: cksum [-nw] [-a algorithm | -c file ]\n\t\t| [-o 1 | 2]] [file ...]\n");
(void)fprintf(stderr, " sum [-c] [file ...]\n");
(void)fprintf(stderr,
" md2 [-n] [-p | -t | -x | -s string] [file ...]\n");
(void)fprintf(stderr,
" md4 [-n] [-p | -t | -x | -s string] [file ...]\n");
(void)fprintf(stderr,
" md5 [-n] [-p | -t | -x | -s string] [file ...]\n");
(void)fprintf(stderr,
" sha1 [-n] [-p | -t | -x | -s string] [file ...]\n");
(void)fprintf(stderr,
" rmd160 [-n] [-p | -t | -x | -s string] [file ...]\n");
exit(1);
}