/*
* IRC - Internet Relay Chat, ircd/md5sum.c
* Copyright (C) 1993 Branko Lankester
* 1993 Colin Plumb
*
* $Id: md5sum.c 1651 2006-07-10 23:45:10Z rubin $
*/
#include <getopt.h>
#include <stdlib.h> /* Added RKNOP 960111 */
#include <stdio.h>
#include <string.h>
#include "md5.h"
#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 print_digest();
int mdfile(FILE *fp, unsigned char *digest);
int do_check(FILE *chkf);
char *progname;
int verbose = 0;
int bin_mode = 0;
int
main(int argc, char **argv)
{
int opt, rc = 0;
int check = 0;
FILE *fp = NULL;
unsigned char digest[16];
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()
{
fprintf(stderr, "usage: md5sum [-bv] [-c [file]] | [file...]\n");
fprintf(stderr, "Generates or checks MD5 Message Digests\n");
fprintf(stderr, " -c check message digests (default is generate)\n");
fprintf(stderr, " -v verbose, print file names when checking\n");
fprintf(stderr, " -b read files in binary mode\n");
fprintf(stderr, "The input for -c should be the list of message digests and file names\n");
fprintf(stderr, "that is printed on stdout by this program when it generates digests.\n");
exit(2);
}
int
mdfile(FILE *fp, unsigned char *digest)
{
unsigned char buf[1024];
MD5_CTX 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;
}
#ifndef HIGHFIRST
#define byteReverse(buf, len) /* Nothing */
#else
void byteReverse(unsigned char *buf, unsigned longs);
#ifndef ASM_MD5
/*
* Note: this code is harmless on little-endian machines.
*/
void byteReverse(unsigned char *buf, unsigned longs)
{
uint32 t;
do {
t = (uint32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
((unsigned) buf[1] << 8 | buf[0]);
*(uint32 *) buf = t;
buf += 4;
} while (--longs);
}
#endif
#endif
/*
* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
* initialization constants.
*/
void MD5Init(struct MD5Context *ctx)
{
ctx->buf[0] = 0x67452301;
ctx->buf[1] = 0xefcdab89;
ctx->buf[2] = 0x98badcfe;
ctx->buf[3] = 0x10325476;
ctx->bits[0] = 0;
ctx->bits[1] = 0;
}
/*
* Update context to reflect the concatenation of another buffer full
* of bytes.
*/
void MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len)
{
uint32 t;
/* Update bitcount */
t = ctx->bits[0];
if ((ctx->bits[0] = t + ((uint32) len << 3)) < t)
ctx->bits[1]++; /* Carry from low to high */
ctx->bits[1] += len >> 29;
t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
/* Handle any leading odd-sized chunks */
if (t) {
unsigned char *p = (unsigned char *) ctx->in + t;
t = 64 - t;
if (len < t) {
memcpy(p, buf, len);
return;
}
memcpy(p, buf, t);
byteReverse(ctx->in, 16);
MD5Transform(ctx->buf, (uint32 *) ctx->in);
buf += t;
len -= t;
}
/* Process data in 64-byte chunks */
while (len >= 64) {
memcpy(ctx->in, buf, 64);
byteReverse(ctx->in, 16);
MD5Transform(ctx->buf, (uint32 *) ctx->in);
buf += 64;
len -= 64;
}
/* Handle any remaining bytes of data. */
memcpy(ctx->in, buf, len);
}
/*
* Final wrapup - pad to 64-byte boundary with the bit pattern
* 1 0* (64-bit count of bits processed, MSB-first)
*/
void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
{
unsigned count;
unsigned char *p;
/* Compute number of bytes mod 64 */
count = (ctx->bits[0] >> 3) & 0x3F;
/* Set the first char of padding to 0x80. This is safe since there is
always at least one byte free */
p = ctx->in + count;
*p++ = 0x80;
/* Bytes of padding needed to make 64 bytes */
count = 64 - 1 - count;
/* Pad out to 56 mod 64 */
if (count < 8) {
/* Two lots of padding: Pad the first block to 64 bytes */
memset(p, 0, count);
byteReverse(ctx->in, 16);
MD5Transform(ctx->buf, (uint32 *) ctx->in);
/* Now fill the next block with 56 bytes */
memset(ctx->in, 0, 56);
} else {
/* Pad block to 56 bytes */
memset(p, 0, count - 8);
}
byteReverse(ctx->in, 14);
/* Append length in bits and transform */
((uint32 *) ctx->in)[14] = ctx->bits[0];
((uint32 *) ctx->in)[15] = ctx->bits[1];
MD5Transform(ctx->buf, (uint32 *) ctx->in);
byteReverse((unsigned char *) ctx->buf, 4);
memcpy(digest, ctx->buf, 16);
memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
}
#ifndef ASM_MD5
/* The four core functions - F1 is optimized somewhat */
/* #define F1(x, y, z) (x & y | ~x & z) */
#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define F4(x, y, z) (y ^ (x | ~z))
/* This is the central step in the MD5 algorithm. */
#ifdef __PUREC__
#define MD5STEP(f, w, x, y, z, data, s) \
( w += f /*(x, y, z)*/ + data, w = w<<s | w>>(32-s), w += x )
#else
#define MD5STEP(f, w, x, y, z, data, s) \
( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
#endif
/*
* The core of the MD5 algorithm, this alters an existing MD5 hash to
* reflect the addition of 16 longwords of new data. MD5Update blocks
* the data and converts bytes into longwords for this routine.
*/
void MD5Transform(uint32 buf[4], uint32 const in[16])
{
register uint32 a, b, c, d;
a = buf[0];
b = buf[1];
c = buf[2];
d = buf[3];
#ifdef __PUREC__ /* PureC Weirdness... (GG) */
MD5STEP(F1(b,c,d), a, b, c, d, in[0] + 0xd76aa478L, 7);
MD5STEP(F1(a,b,c), d, a, b, c, in[1] + 0xe8c7b756L, 12);
MD5STEP(F1(d,a,b), c, d, a, b, in[2] + 0x242070dbL, 17);
MD5STEP(F1(c,d,a), b, c, d, a, in[3] + 0xc1bdceeeL, 22);
MD5STEP(F1(b,c,d), a, b, c, d, in[4] + 0xf57c0fafL, 7);
MD5STEP(F1(a,b,c), d, a, b, c, in[5] + 0x4787c62aL, 12);
MD5STEP(F1(d,a,b), c, d, a, b, in[6] + 0xa8304613L, 17);
MD5STEP(F1(c,d,a), b, c, d, a, in[7] + 0xfd469501L, 22);
MD5STEP(F1(b,c,d), a, b, c, d, in[8] + 0x698098d8L, 7);
MD5STEP(F1(a,b,c), d, a, b, c, in[9] + 0x8b44f7afL, 12);
MD5STEP(F1(d,a,b), c, d, a, b, in[10] + 0xffff5bb1L, 17);
MD5STEP(F1(c,d,a), b, c, d, a, in[11] + 0x895cd7beL, 22);
MD5STEP(F1(b,c,d), a, b, c, d, in[12] + 0x6b901122L, 7);
MD5STEP(F1(a,b,c), d, a, b, c, in[13] + 0xfd987193L, 12);
MD5STEP(F1(d,a,b), c, d, a, b, in[14] + 0xa679438eL, 17);
MD5STEP(F1(c,d,a), b, c, d, a, in[15] + 0x49b40821L, 22);
MD5STEP(F2(b,c,d), a, b, c, d, in[1] + 0xf61e2562L, 5);
MD5STEP(F2(a,b,c), d, a, b, c, in[6] + 0xc040b340L, 9);
MD5STEP(F2(d,a,b), c, d, a, b, in[11] + 0x265e5a51L, 14);
MD5STEP(F2(c,d,a), b, c, d, a, in[0] + 0xe9b6c7aaL, 20);
MD5STEP(F2(b,c,d), a, b, c, d, in[5] + 0xd62f105dL, 5);
MD5STEP(F2(a,b,c), d, a, b, c, in[10] + 0x02441453L, 9);
MD5STEP(F2(d,a,b), c, d, a, b, in[15] + 0xd8a1e681L, 14);
MD5STEP(F2(c,d,a), b, c, d, a, in[4] + 0xe7d3fbc8L, 20);
MD5STEP(F2(b,c,d), a, b, c, d, in[9] + 0x21e1cde6L, 5);
MD5STEP(F2(a,b,c), d, a, b, c, in[14] + 0xc33707d6L, 9);
MD5STEP(F2(d,a,b), c, d, a, b, in[3] + 0xf4d50d87L, 14);
MD5STEP(F2(c,d,a), b, c, d, a, in[8] + 0x455a14edL, 20);
MD5STEP(F2(b,c,d), a, b, c, d, in[13] + 0xa9e3e905L, 5);
MD5STEP(F2(a,b,c), d, a, b, c, in[2] + 0xfcefa3f8L, 9);
MD5STEP(F2(d,a,b), c, d, a, b, in[7] + 0x676f02d9L, 14);
MD5STEP(F2(c,d,a), b, c, d, a, in[12] + 0x8d2a4c8aL, 20);
MD5STEP(F3(b,c,d), a, b, c, d, in[5] + 0xfffa3942L, 4);
MD5STEP(F3(a,b,c), d, a, b, c, in[8] + 0x8771f681L, 11);
MD5STEP(F3(d,a,b), c, d, a, b, in[11] + 0x6d9d6122L, 16);
MD5STEP(F3(c,d,a), b, c, d, a, in[14] + 0xfde5380cL, 23);
MD5STEP(F3(b,c,d), a, b, c, d, in[1] + 0xa4beea44L, 4);
MD5STEP(F3(a,b,c), d, a, b, c, in[4] + 0x4bdecfa9L, 11);
MD5STEP(F3(d,a,b), c, d, a, b, in[7] + 0xf6bb4b60L, 16);
MD5STEP(F3(c,d,a), b, c, d, a, in[10] + 0xbebfbc70L, 23);
MD5STEP(F3(b,c,d), a, b, c, d, in[13] + 0x289b7ec6L, 4);
MD5STEP(F3(a,b,c), d, a, b, c, in[0] + 0xeaa127faL, 11);
MD5STEP(F3(d,a,b), c, d, a, b, in[3] + 0xd4ef3085L, 16);
MD5STEP(F3(c,d,a), b, c, d, a, in[6] + 0x04881d05L, 23);
MD5STEP(F3(b,c,d), a, b, c, d, in[9] + 0xd9d4d039L, 4);
MD5STEP(F3(a,b,c), d, a, b, c, in[12] + 0xe6db99e5L, 11);
MD5STEP(F3(d,a,b), c, d, a, b, in[15] + 0x1fa27cf8L, 16);
MD5STEP(F3(c,d,a), b, c, d, a, in[2] + 0xc4ac5665L, 23);
MD5STEP(F4(b,c,d), a, b, c, d, in[0] + 0xf4292244L, 6);
MD5STEP(F4(a,b,c), d, a, b, c, in[7] + 0x432aff97L, 10);
MD5STEP(F4(d,a,b), c, d, a, b, in[14] + 0xab9423a7L, 15);
MD5STEP(F4(c,d,a), b, c, d, a, in[5] + 0xfc93a039L, 21);
MD5STEP(F4(b,c,d), a, b, c, d, in[12] + 0x655b59c3L, 6);
MD5STEP(F4(a,b,c), d, a, b, c, in[3] + 0x8f0ccc92L, 10);
MD5STEP(F4(d,a,b), c, d, a, b, in[10] + 0xffeff47dL, 15);
MD5STEP(F4(c,d,a), b, c, d, a, in[1] + 0x85845dd1L, 21);
MD5STEP(F4(b,c,d), a, b, c, d, in[8] + 0x6fa87e4fL, 6);
MD5STEP(F4(a,b,c), d, a, b, c, in[15] + 0xfe2ce6e0L, 10);
MD5STEP(F4(d,a,b), c, d, a, b, in[6] + 0xa3014314L, 15);
MD5STEP(F4(c,d,a), b, c, d, a, in[13] + 0x4e0811a1L, 21);
MD5STEP(F4(b,c,d), a, b, c, d, in[4] + 0xf7537e82L, 6);
MD5STEP(F4(a,b,c), d, a, b, c, in[11] + 0xbd3af235L, 10);
MD5STEP(F4(d,a,b), c, d, a, b, in[2] + 0x2ad7d2bbL, 15);
MD5STEP(F4(c,d,a), b, c, d, a, in[9] + 0xeb86d391L, 21);
#else
MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
#endif
buf[0] += a;
buf[1] += b;
buf[2] += c;
buf[3] += d;
}
#endif
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