/* ====================================================================
* The Vovida Software License, Version 1.0
*
* Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
*
* 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. The names "VOCAL", "Vovida Open Communication Application Library",
* and "Vovida Open Communication Application Library (VOCAL)" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact vocal@vovida.org.
*
* 4. Products derived from this software may not be called "VOCAL", nor
* may "VOCAL" appear in their name, without prior written
* permission of Vovida Networks, Inc.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
* NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
* IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* ====================================================================
*
* This software consists of voluntary contributions made by Vovida
* Networks, Inc. and many individuals on behalf of Vovida Networks,
* Inc. For more information on Vovida Networks, Inc., please see
* <http://www.vovida.org/>.
*
*/
static const char* const vmd5sum_c_Version =
"$Id: vmd5sum.c,v 1.1 2001/03/26 10:35:31 icahoon Exp $";
/*
* md5sum.c - Generate/check MD5 Message Digests
*
* Compile and link with md5.c. If you don't have getopt() in your library
* also include getopt.c. For MSDOS you can also link with the wildcard
* initialization function (wildargs.obj for Turbo C and setargv.obj for MSC)
* so that you can use wildcards on the commandline.
*
* Written March 1993 by Branko Lankester
* Modified June 1993 by Colin Plumb for altered md5.c.
* Modified Feburary 1995 by Ian Jackson for use with Colin Plumb's md5.c.
* Hacked (modified is too nice a word) January 1997 by Galen Hazelwood
* to support GNU gettext.
* This file is in the public domain.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifdef __linux__
#include <getopt.h>
#endif
/* #include "config.h" */
#include "vmd5.h"
/* Take care of NLS matters. */
#if HAVE_LOCALE_H
# include < locale.h >
#endif
#if !HAVE_SETLOCALE
# define setlocale(Category, Locale) /* empty */
#endif
#if ENABLE_NLS
# include < libintl.h >
# define _(Text) gettext (Text)
#else
# undef bindtextdomain
# define bindtextdomain(Domain, Directory) /* empty */
# undef textdomain
# define textdomain(Domain) /* empty */
# define _(Text) Text
#endif
#ifdef UNIX
#define FOPRTXT "r"
#define FOPRBIN "r"
#else
#ifdef VMS
#define FOPRTXT "r","ctx=stm"
#define FOPRBIN "rb","ctx=stm"
#else
#define FOPRTXT "r"
#define FOPRBIN "rb"
#endif
#endif
extern char *optarg;
extern int optind;
void usage(void);
void print_digest(unsigned char *p);
int mdfile(FILE *fp, unsigned char *digest);
int do_check(FILE *chkf);
int hex_digit(int c);
int get_md5_line(FILE *fp, unsigned char *digest, char *file);
char *progname;
int verbose = 0;
int bin_mode = 0;
void
main(int argc, char **argv)
{
int opt, rc = 0;
int check = 0;
FILE *fp = NULL;
unsigned char digest[16];
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
progname = *argv;
while ((opt = getopt(argc, argv, "cbvp:h")) != EOF)
{
switch (opt)
{
case 'c':
check = 1;
break;
case 'v':
verbose = 1;
break;
case 'b':
bin_mode = 1;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (check)
{
switch (argc)
{
case 0:
fp = stdin;
break;
case 1:
if ((fp = fopen(*argv, FOPRTXT)) == NULL)
{
perror(*argv);
exit(2);
}
break;
default:
usage();
}
exit(do_check(fp));
}
if (argc == 0)
{
if (mdfile(stdin, digest))
{
fprintf(stderr, _("%s: read error on stdin\n"), progname);
exit(2);
}
print_digest(digest);
printf("\n");
exit(0);
}
for ( ; argc > 0; --argc, ++argv)
{
if (bin_mode)
fp = fopen(*argv, FOPRBIN);
else
fp = fopen(*argv, FOPRTXT);
if (fp == NULL)
{
perror(*argv);
rc = 2;
continue;
}
if (mdfile(fp, digest))
{
fprintf(stderr, _("%s: error reading %s\n"), progname, *argv);
rc = 2;
}
else
{
print_digest(digest);
printf(" %c%s\n", bin_mode ? '*' : ' ', *argv);
}
fclose(fp);
}
exit(rc);
}
void
usage()
{
fputs(_("usage: md5sum [-bv] [-c [file]] | [file...]\n\
Generates or checks MD5 Message Digests\n\
-c check message digests (default is generate)\n\
-v verbose, print file names when checking\n\
-b read files in binary mode\n\
The input for -c should be the list of message digests and file names\n\
that is printed on stdout by this program when it generates digests.\n"), stderr);
exit(2);
}
int
mdfile(FILE *fp, unsigned char *digest)
{
unsigned char buf[1024];
struct MD5Context ctx;
int n;
MD5Init(&ctx);
while ((n = fread(buf, 1, sizeof(buf), fp)) > 0)
MD5Update(&ctx, buf, n);
MD5Final(digest, &ctx);
if (ferror(fp))
return -1;
return 0;
}
void
print_digest(unsigned char *p)
{
int i;
for (i = 0; i < 16; ++i)
printf("%02x", *p++);
}
int
hex_digit(int c)
{
if (c >= '0' && c <= '9')
return c - '0';
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
return -1;
}
int
get_md5_line(FILE *fp, unsigned char *digest, char *file)
{
char buf[1024];
int i, d1, d2, rc;
char *p = buf;
if (fgets(buf, sizeof(buf), fp) == NULL)
return -1;
for (i = 0; i < 16; ++i)
{
if ((d1 = hex_digit(*p++)) == -1)
return 0;
if ((d2 = hex_digit(*p++)) == -1)
return 0;
*digest++ = d1 * 16 + d2;
}
if (*p++ != ' ')
return 0;
/*
* next char is an attribute char, space means text file
* if it's a '*' the file should be checked in binary mode.
*/
if (*p == ' ')
rc = 1;
else if (*p == '*')
rc = 2;
else
{
fprintf(stderr, _("%s: unrecognized line: %s"), progname, buf);
return 0;
}
++p;
i = strlen(p);
if (i < 2 || i > 255)
return 0;
p[i - 1] = '\0';
strcpy(file, p);
return rc;
}
int
do_check(FILE *chkf)
{
int rc, ex = 0, failed = 0, checked = 0;
unsigned char chk_digest[16], file_digest[16];
char filename[256];
FILE *fp;
int flen = 14;
while ((rc = get_md5_line(chkf, chk_digest, filename)) >= 0)
{
if (rc == 0) /* not an md5 line */
continue;
if (verbose)
{
if (strlen(filename) > flen)
flen = strlen(filename);
fprintf(stderr, "%-*s ", flen, filename);
}
if (bin_mode || rc == 2)
fp = fopen(filename, FOPRBIN);
else
fp = fopen(filename, FOPRTXT);
if (fp == NULL)
{
fprintf(stderr, _("%s: can't open %s\n"), progname, filename);
ex = 2;
continue;
}
if (mdfile(fp, file_digest))
{
fprintf(stderr, _("%s: error reading %s\n"), progname, filename);
ex = 2;
fclose(fp);
continue;
}
fclose(fp);
if (memcmp(chk_digest, file_digest, 16) != 0)
{
if (verbose)
fprintf(stderr, _("FAILED\n"));
else
fprintf(stderr, _("%s: MD5 check failed for '%s'\n"), progname, filename);
++failed;
}
else if (verbose)
fprintf(stderr, _("OK\n"));
++checked;
}
if (verbose && failed)
fprintf(stderr, _("%s: %d of %d file(s) failed MD5 check\n"), progname, failed, checked);
if (!checked)
{
fprintf(stderr, _("%s: no files checked\n"), progname);
return 3;
}
if (!ex && failed)
ex = 1;
return ex;
}
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