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Patch for md5sum from Aaron Lehmann <aaronl@vitelus.com> to slim

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it down a little bit.
This commit is contained in:
Eric Andersen 2001-07-10 16:31:29 +00:00
parent 5c58d283bb
commit 55522080c6
2 changed files with 78 additions and 210 deletions
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144
coreutils/md5sum.c
View File

@ -63,24 +63,6 @@
/* md5.c - Functions to compute MD5 message digest of files or memory blocks /* md5.c - Functions to compute MD5 message digest of files or memory blocks
* according to the definition of MD5 in RFC 1321 from April 1992. * according to the definition of MD5 in RFC 1321 from April 1992.
* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
*
* NOTE: The canonical source of this file is maintained with the GNU C
* Library. Bugs can be reported to bug-glibc@prep.ai.mit.edu.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/ */
/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. */ /* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. */
@ -90,34 +72,7 @@
//---------------------------------------------------------------------------- //----------------------------------------------------------------------------
/* md5.h - Declaration of functions and data types used for MD5 sum /* md5.h - Declaration of functions and data types used for MD5 sum
computing library functions. computing library functions. */
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
NOTE: The canonical source of this file is maintained with the GNU C
Library. Bugs can be reported to bug-glibc@prep.ai.mit.edu.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifndef _MD5_H
static const int _MD5_H = 1;
/* The following contortions are an attempt to use the C preprocessor
to determine an unsigned integral type that is 32 bits wide. An
alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but
doing that would require that the configure script compile and *run*
the resulting executable. Locally running cross-compiled executables
is usually not possible. */
typedef u_int32_t md5_uint32; typedef u_int32_t md5_uint32;
@ -141,20 +96,20 @@ struct md5_ctx
/* Initialize structure containing state of computation. /* Initialize structure containing state of computation.
(RFC 1321, 3.3: Step 3) */ (RFC 1321, 3.3: Step 3) */
extern void md5_init_ctx __P ((struct md5_ctx *ctx)); static void md5_init_ctx __P ((struct md5_ctx *ctx));
/* Starting with the result of former calls of this function (or the /* Starting with the result of former calls of this function (or the
initialization function update the context for the next LEN bytes initialization function update the context for the next LEN bytes
starting at BUFFER. starting at BUFFER.
It is necessary that LEN is a multiple of 64!!! */ It is necessary that LEN is a multiple of 64!!! */
extern void md5_process_block __P ((const void *buffer, size_t len, static void md5_process_block __P ((const void *buffer, size_t len,
struct md5_ctx *ctx)); struct md5_ctx *ctx));
/* Starting with the result of former calls of this function (or the /* Starting with the result of former calls of this function (or the
initialization function update the context for the next LEN bytes initialization function update the context for the next LEN bytes
starting at BUFFER. starting at BUFFER.
It is NOT required that LEN is a multiple of 64. */ It is NOT required that LEN is a multiple of 64. */
extern void md5_process_bytes __P ((const void *buffer, size_t len, static void md5_process_bytes __P ((const void *buffer, size_t len,
struct md5_ctx *ctx)); struct md5_ctx *ctx));
/* Process the remaining bytes in the buffer and put result from CTX /* Process the remaining bytes in the buffer and put result from CTX
@ -164,30 +119,21 @@ extern void md5_process_bytes __P ((const void *buffer, size_t len,
IMPORTANT: On some systems it is required that RESBUF is correctly IMPORTANT: On some systems it is required that RESBUF is correctly
aligned for a 32 bits value. */ aligned for a 32 bits value. */
extern void *md5_finish_ctx __P ((struct md5_ctx *ctx, void *resbuf)); static void *md5_finish_ctx __P ((struct md5_ctx *ctx, void *resbuf));
/* Put result from CTX in first 16 bytes following RESBUF. The result is
always in little endian byte order, so that a byte-wise output yields
to the wanted ASCII representation of the message digest.
IMPORTANT: On some systems it is required that RESBUF is correctly
aligned for a 32 bits value. */
extern void *md5_read_ctx __P ((const struct md5_ctx *ctx, void *resbuf));
/* Compute MD5 message digest for bytes read from STREAM. The /* Compute MD5 message digest for bytes read from STREAM. The
resulting message digest number will be written into the 16 bytes resulting message digest number will be written into the 16 bytes
beginning at RESBLOCK. */ beginning at RESBLOCK. */
extern int md5_stream __P ((FILE *stream, void *resblock)); static int md5_stream __P ((FILE *stream, void *resblock));
/* Compute MD5 message digest for LEN bytes beginning at BUFFER. The /* Compute MD5 message digest for LEN bytes beginning at BUFFER. The
result is always in little endian byte order, so that a byte-wise result is always in little endian byte order, so that a byte-wise
output yields to the wanted ASCII representation of the message output yields to the wanted ASCII representation of the message
digest. */ digest. */
extern void *md5_buffer __P ((const char *buffer, size_t len, void *resblock)); static void *md5_buffer __P ((const char *buffer, size_t len, void *resblock));
#endif
//---------------------------------------------------------------------------- //----------------------------------------------------------------------------
//--------end of md5.h //--------end of md5.h
@ -221,27 +167,12 @@ void md5_init_ctx(struct md5_ctx *ctx)
ctx->buflen = 0; ctx->buflen = 0;
} }
/* Put result from CTX in first 16 bytes following RESBUF. The result
must be in little endian byte order.
IMPORTANT: On some systems it is required that RESBUF is correctly
aligned for a 32 bits value. */
void *md5_read_ctx(const struct md5_ctx *ctx, void *resbuf)
{
((md5_uint32 *) resbuf)[0] = SWAP(ctx->A);
((md5_uint32 *) resbuf)[1] = SWAP(ctx->B);
((md5_uint32 *) resbuf)[2] = SWAP(ctx->C);
((md5_uint32 *) resbuf)[3] = SWAP(ctx->D);
return resbuf;
}
/* Process the remaining bytes in the internal buffer and the usual /* Process the remaining bytes in the internal buffer and the usual
prolog according to the standard and write the result to RESBUF. prolog according to the standard and write the result to RESBUF.
IMPORTANT: On some systems it is required that RESBUF is correctly IMPORTANT: On some systems it is required that RESBUF is correctly
aligned for a 32 bits value. */ aligned for a 32 bits value. */
void *md5_finish_ctx(struct md5_ctx *ctx, void *resbuf) static void *md5_finish_ctx(struct md5_ctx *ctx, void *resbuf)
{ {
/* Take yet unprocessed bytes into account. */ /* Take yet unprocessed bytes into account. */
md5_uint32 bytes = ctx->buflen; md5_uint32 bytes = ctx->buflen;
@ -268,13 +199,24 @@ void *md5_finish_ctx(struct md5_ctx *ctx, void *resbuf)
/* Process last bytes. */ /* Process last bytes. */
md5_process_block(ctx->buffer, bytes + pad + 8, ctx); md5_process_block(ctx->buffer, bytes + pad + 8, ctx);
return md5_read_ctx(ctx, resbuf); /* Put result from CTX in first 16 bytes following RESBUF. The result is
always in little endian byte order, so that a byte-wise output yields
to the wanted ASCII representation of the message digest.
IMPORTANT: On some systems it is required that RESBUF is correctly
aligned for a 32 bits value. */
((md5_uint32 *) resbuf)[0] = SWAP(ctx->A);
((md5_uint32 *) resbuf)[1] = SWAP(ctx->B);
((md5_uint32 *) resbuf)[2] = SWAP(ctx->C);
((md5_uint32 *) resbuf)[3] = SWAP(ctx->D);
return resbuf;
} }
/* Compute MD5 message digest for bytes read from STREAM. The /* Compute MD5 message digest for bytes read from STREAM. The
resulting message digest number will be written into the 16 bytes resulting message digest number will be written into the 16 bytes
beginning at RESBLOCK. */ beginning at RESBLOCK. */
int md5_stream(FILE *stream, void *resblock) static int md5_stream(FILE *stream, void *resblock)
{ {
/* Important: BLOCKSIZE must be a multiple of 64. */ /* Important: BLOCKSIZE must be a multiple of 64. */
static const int BLOCKSIZE = 4096; static const int BLOCKSIZE = 4096;
@ -326,7 +268,7 @@ static const int BLOCKSIZE = 4096;
result is always in little endian byte order, so that a byte-wise result is always in little endian byte order, so that a byte-wise
output yields to the wanted ASCII representation of the message output yields to the wanted ASCII representation of the message
digest. */ digest. */
void *md5_buffer(const char *buffer, size_t len, void *resblock) static void *md5_buffer(const char *buffer, size_t len, void *resblock)
{ {
struct md5_ctx ctx; struct md5_ctx ctx;
@ -340,7 +282,7 @@ void *md5_buffer(const char *buffer, size_t len, void *resblock)
return md5_finish_ctx(&ctx, resblock); return md5_finish_ctx(&ctx, resblock);
} }
void md5_process_bytes(const void *buffer, size_t len, struct md5_ctx *ctx) static void md5_process_bytes(const void *buffer, size_t len, struct md5_ctx *ctx)
{ {
/* When we already have some bits in our internal buffer concatenate /* When we already have some bits in our internal buffer concatenate
both inputs first. */ both inputs first. */
@ -388,7 +330,7 @@ void md5_process_bytes(const void *buffer, size_t len, struct md5_ctx *ctx)
/* Process LEN bytes of BUFFER, accumulating context into CTX. /* Process LEN bytes of BUFFER, accumulating context into CTX.
It is assumed that LEN % 64 == 0. */ It is assumed that LEN % 64 == 0. */
void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx) static void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
{ {
md5_uint32 correct_words[16]; md5_uint32 correct_words[16];
const md5_uint32 *words = buffer; const md5_uint32 *words = buffer;
@ -490,7 +432,6 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
break; break;
case 3: case 3:
temp += FI(B,C,D); temp += FI(B,C,D);
break;
} }
temp += cwp[(int)(*pp++)] + *pc++; temp += cwp[(int)(*pp++)] + *pc++;
temp = CYCLIC (temp, ps[i&3]); temp = CYCLIC (temp, ps[i&3]);
@ -550,6 +491,7 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
/* It is unfortunate that C does not provide an operator for /* It is unfortunate that C does not provide an operator for
cyclic rotation. Hope the C compiler is smart enough. */ cyclic rotation. Hope the C compiler is smart enough. */
/* gcc 2.95.4 seems to be --aaronl */
#define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s))) #define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
/* Before we start, one word to the strange constants. /* Before we start, one word to the strange constants.
@ -707,11 +649,7 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
//---------------------------------------------------------------------------- //----------------------------------------------------------------------------
#define ISWHITE(c) ((c) == ' ' || (c) == '\t') #define ISWHITE(c) ((c) == ' ' || (c) == '\t')
#define IN_CTYPE_DOMAIN(c) 1 #define ISXDIGIT(c) (isxdigit (c))
#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
#define STREQ(a, b) (strcmp ((a), (b)) == 0)
#define TOLOWER(Ch) tolower (Ch)
#define OPENOPTS(BINARY) "r"
/* The minimum length of a valid digest line in a file produced /* The minimum length of a valid digest line in a file produced
by `md5sum FILE' and read by `md5sum -c'. This length does by `md5sum FILE' and read by `md5sum -c'. This length does
@ -731,7 +669,6 @@ static int warn = 0; /* With -w, print a message to standard error warning
static int split_3(char *s, static int split_3(char *s,
size_t s_len, size_t s_len,
unsigned char **u, unsigned char **u,
int *binary,
char **w) char **w)
{ {
size_t i = 0; size_t i = 0;
@ -762,9 +699,8 @@ static int split_3(char *s,
s[i++] = '\0'; s[i++] = '\0';
if (s[i] != ' ' && s[i] != '*') if (s[i] != ' ' && s[i++] != '*')
return FALSE; return FALSE;
*binary = (s[i++] == '*');
/* All characters between the type indicator and end of line are /* All characters between the type indicator and end of line are
significant -- that includes leading and trailing white space. */ significant -- that includes leading and trailing white space. */
@ -812,7 +748,7 @@ static int split_3(char *s,
return TRUE; return TRUE;
} }
static int hex_digits(unsigned char const *s) static inline int hex_digits(unsigned char const *s)
{ {
while (*s) { while (*s) {
if (!ISXDIGIT(*s)) if (!ISXDIGIT(*s))
@ -826,16 +762,15 @@ static int hex_digits(unsigned char const *s)
put the result in *MD5_RESULT. Return non-zero upon failure, zero put the result in *MD5_RESULT. Return non-zero upon failure, zero
to indicate success. */ to indicate success. */
static int md5_file(const char *filename, static int md5_file(const char *filename,
int binary,
unsigned char *md5_result) unsigned char *md5_result)
{ {
FILE *fp; FILE *fp;
if (STREQ(filename, "-")) { if (filename[0] == '-' && filename[1] == '\0') {
have_read_stdin = 1; have_read_stdin = 1;
fp = stdin; fp = stdin;
} else { } else {
fp = fopen(filename, OPENOPTS(binary)); fp = fopen(filename, "r");
if (fp == NULL) { if (fp == NULL) {
perror_msg("%s", filename); perror_msg("%s", filename);
return FALSE; return FALSE;
@ -868,7 +803,7 @@ static int md5_check(const char *checkfile_name)
size_t line_number; size_t line_number;
char line[BUFSIZ]; char line[BUFSIZ];
if (STREQ(checkfile_name, "-")) { if (checkfile_name[0] == '-' && checkfile_name[1] == '\0') {
have_read_stdin = 1; have_read_stdin = 1;
checkfile_stream = stdin; checkfile_stream = stdin;
} else { } else {
@ -883,7 +818,6 @@ static int md5_check(const char *checkfile_name)
do { do {
char *filename; char *filename;
int binary;
unsigned char *md5num; unsigned char *md5num;
int line_length; int line_length;
@ -903,7 +837,7 @@ static int md5_check(const char *checkfile_name)
if (line[line_length - 1] == '\n') if (line[line_length - 1] == '\n')
line[--line_length] = '\0'; line[--line_length] = '\0';
if (split_3(line, line_length, &md5num, &binary, &filename) if (split_3(line, line_length, &md5num, &filename)
|| !hex_digits(md5num)) { || !hex_digits(md5num)) {
if (warn) { if (warn) {
error_msg("%s: %lu: improperly formatted MD5 checksum line", error_msg("%s: %lu: improperly formatted MD5 checksum line",
@ -919,7 +853,7 @@ static int md5_check(const char *checkfile_name)
++n_properly_formated_lines; ++n_properly_formated_lines;
if (md5_file(filename, binary, md5buffer)) { if (md5_file(filename, md5buffer)) {
++n_open_or_read_failures; ++n_open_or_read_failures;
if (!status_only) { if (!status_only) {
printf("%s: FAILED open or read\n", filename); printf("%s: FAILED open or read\n", filename);
@ -930,9 +864,9 @@ static int md5_check(const char *checkfile_name)
/* Compare generated binary number with text representation /* Compare generated binary number with text representation
in check file. Ignore case of hex digits. */ in check file. Ignore case of hex digits. */
for (cnt = 0; cnt < 16; ++cnt) { for (cnt = 0; cnt < 16; ++cnt) {
if (TOLOWER(md5num[2 * cnt]) if (tolower(md5num[2 * cnt])
!= bin2hex[md5buffer[cnt] >> 4] != bin2hex[md5buffer[cnt] >> 4]
|| (TOLOWER(md5num[2 * cnt + 1]) || (tolower(md5num[2 * cnt + 1])
!= (bin2hex[md5buffer[cnt] & 0xf]))) != (bin2hex[md5buffer[cnt] & 0xf])))
break; break;
} }
@ -997,8 +931,8 @@ int md5sum_main(int argc,
char **string = NULL; char **string = NULL;
size_t n_strings = 0; size_t n_strings = 0;
size_t err = 0; size_t err = 0;
int file_type_specified = 0; char file_type_specified = 0;
int binary = 0; char binary = 0;
while ((opt = getopt(argc, argv, "g:bcstw")) != -1) { while ((opt = getopt(argc, argv, "g:bcstw")) != -1) {
switch (opt) { switch (opt) {
@ -1084,9 +1018,9 @@ int md5sum_main(int argc,
int fail; int fail;
char *file = argv[optind]; char *file = argv[optind];
fail = md5_file (file, binary, md5buffer); fail = md5_file (file, md5buffer);
err |= fail; err |= fail;
if (!fail && STREQ(file, "-")) { if (!fail && file[0]=='-' && file[1] == '\0') {
size_t i; size_t i;
for (i = 0; i < 16; ++i) for (i = 0; i < 16; ++i)
printf ("%02x", md5buffer[i]); printf ("%02x", md5buffer[i]);

144
md5sum.c
View File

@ -63,24 +63,6 @@
/* md5.c - Functions to compute MD5 message digest of files or memory blocks /* md5.c - Functions to compute MD5 message digest of files or memory blocks
* according to the definition of MD5 in RFC 1321 from April 1992. * according to the definition of MD5 in RFC 1321 from April 1992.
* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
*
* NOTE: The canonical source of this file is maintained with the GNU C
* Library. Bugs can be reported to bug-glibc@prep.ai.mit.edu.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/ */
/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. */ /* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. */
@ -90,34 +72,7 @@
//---------------------------------------------------------------------------- //----------------------------------------------------------------------------
/* md5.h - Declaration of functions and data types used for MD5 sum /* md5.h - Declaration of functions and data types used for MD5 sum
computing library functions. computing library functions. */
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
NOTE: The canonical source of this file is maintained with the GNU C
Library. Bugs can be reported to bug-glibc@prep.ai.mit.edu.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifndef _MD5_H
static const int _MD5_H = 1;
/* The following contortions are an attempt to use the C preprocessor
to determine an unsigned integral type that is 32 bits wide. An
alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but
doing that would require that the configure script compile and *run*
the resulting executable. Locally running cross-compiled executables
is usually not possible. */
typedef u_int32_t md5_uint32; typedef u_int32_t md5_uint32;
@ -141,20 +96,20 @@ struct md5_ctx
/* Initialize structure containing state of computation. /* Initialize structure containing state of computation.
(RFC 1321, 3.3: Step 3) */ (RFC 1321, 3.3: Step 3) */
extern void md5_init_ctx __P ((struct md5_ctx *ctx)); static void md5_init_ctx __P ((struct md5_ctx *ctx));
/* Starting with the result of former calls of this function (or the /* Starting with the result of former calls of this function (or the
initialization function update the context for the next LEN bytes initialization function update the context for the next LEN bytes
starting at BUFFER. starting at BUFFER.
It is necessary that LEN is a multiple of 64!!! */ It is necessary that LEN is a multiple of 64!!! */
extern void md5_process_block __P ((const void *buffer, size_t len, static void md5_process_block __P ((const void *buffer, size_t len,
struct md5_ctx *ctx)); struct md5_ctx *ctx));
/* Starting with the result of former calls of this function (or the /* Starting with the result of former calls of this function (or the
initialization function update the context for the next LEN bytes initialization function update the context for the next LEN bytes
starting at BUFFER. starting at BUFFER.
It is NOT required that LEN is a multiple of 64. */ It is NOT required that LEN is a multiple of 64. */
extern void md5_process_bytes __P ((const void *buffer, size_t len, static void md5_process_bytes __P ((const void *buffer, size_t len,
struct md5_ctx *ctx)); struct md5_ctx *ctx));
/* Process the remaining bytes in the buffer and put result from CTX /* Process the remaining bytes in the buffer and put result from CTX
@ -164,30 +119,21 @@ extern void md5_process_bytes __P ((const void *buffer, size_t len,
IMPORTANT: On some systems it is required that RESBUF is correctly IMPORTANT: On some systems it is required that RESBUF is correctly
aligned for a 32 bits value. */ aligned for a 32 bits value. */
extern void *md5_finish_ctx __P ((struct md5_ctx *ctx, void *resbuf)); static void *md5_finish_ctx __P ((struct md5_ctx *ctx, void *resbuf));
/* Put result from CTX in first 16 bytes following RESBUF. The result is
always in little endian byte order, so that a byte-wise output yields
to the wanted ASCII representation of the message digest.
IMPORTANT: On some systems it is required that RESBUF is correctly
aligned for a 32 bits value. */
extern void *md5_read_ctx __P ((const struct md5_ctx *ctx, void *resbuf));
/* Compute MD5 message digest for bytes read from STREAM. The /* Compute MD5 message digest for bytes read from STREAM. The
resulting message digest number will be written into the 16 bytes resulting message digest number will be written into the 16 bytes
beginning at RESBLOCK. */ beginning at RESBLOCK. */
extern int md5_stream __P ((FILE *stream, void *resblock)); static int md5_stream __P ((FILE *stream, void *resblock));
/* Compute MD5 message digest for LEN bytes beginning at BUFFER. The /* Compute MD5 message digest for LEN bytes beginning at BUFFER. The
result is always in little endian byte order, so that a byte-wise result is always in little endian byte order, so that a byte-wise
output yields to the wanted ASCII representation of the message output yields to the wanted ASCII representation of the message
digest. */ digest. */
extern void *md5_buffer __P ((const char *buffer, size_t len, void *resblock)); static void *md5_buffer __P ((const char *buffer, size_t len, void *resblock));
#endif
//---------------------------------------------------------------------------- //----------------------------------------------------------------------------
//--------end of md5.h //--------end of md5.h
@ -221,27 +167,12 @@ void md5_init_ctx(struct md5_ctx *ctx)
ctx->buflen = 0; ctx->buflen = 0;
} }
/* Put result from CTX in first 16 bytes following RESBUF. The result
must be in little endian byte order.
IMPORTANT: On some systems it is required that RESBUF is correctly
aligned for a 32 bits value. */
void *md5_read_ctx(const struct md5_ctx *ctx, void *resbuf)
{
((md5_uint32 *) resbuf)[0] = SWAP(ctx->A);
((md5_uint32 *) resbuf)[1] = SWAP(ctx->B);
((md5_uint32 *) resbuf)[2] = SWAP(ctx->C);
((md5_uint32 *) resbuf)[3] = SWAP(ctx->D);
return resbuf;
}
/* Process the remaining bytes in the internal buffer and the usual /* Process the remaining bytes in the internal buffer and the usual
prolog according to the standard and write the result to RESBUF. prolog according to the standard and write the result to RESBUF.
IMPORTANT: On some systems it is required that RESBUF is correctly IMPORTANT: On some systems it is required that RESBUF is correctly
aligned for a 32 bits value. */ aligned for a 32 bits value. */
void *md5_finish_ctx(struct md5_ctx *ctx, void *resbuf) static void *md5_finish_ctx(struct md5_ctx *ctx, void *resbuf)
{ {
/* Take yet unprocessed bytes into account. */ /* Take yet unprocessed bytes into account. */
md5_uint32 bytes = ctx->buflen; md5_uint32 bytes = ctx->buflen;
@ -268,13 +199,24 @@ void *md5_finish_ctx(struct md5_ctx *ctx, void *resbuf)
/* Process last bytes. */ /* Process last bytes. */
md5_process_block(ctx->buffer, bytes + pad + 8, ctx); md5_process_block(ctx->buffer, bytes + pad + 8, ctx);
return md5_read_ctx(ctx, resbuf); /* Put result from CTX in first 16 bytes following RESBUF. The result is
always in little endian byte order, so that a byte-wise output yields
to the wanted ASCII representation of the message digest.
IMPORTANT: On some systems it is required that RESBUF is correctly
aligned for a 32 bits value. */
((md5_uint32 *) resbuf)[0] = SWAP(ctx->A);
((md5_uint32 *) resbuf)[1] = SWAP(ctx->B);
((md5_uint32 *) resbuf)[2] = SWAP(ctx->C);
((md5_uint32 *) resbuf)[3] = SWAP(ctx->D);
return resbuf;
} }
/* Compute MD5 message digest for bytes read from STREAM. The /* Compute MD5 message digest for bytes read from STREAM. The
resulting message digest number will be written into the 16 bytes resulting message digest number will be written into the 16 bytes
beginning at RESBLOCK. */ beginning at RESBLOCK. */
int md5_stream(FILE *stream, void *resblock) static int md5_stream(FILE *stream, void *resblock)
{ {
/* Important: BLOCKSIZE must be a multiple of 64. */ /* Important: BLOCKSIZE must be a multiple of 64. */
static const int BLOCKSIZE = 4096; static const int BLOCKSIZE = 4096;
@ -326,7 +268,7 @@ static const int BLOCKSIZE = 4096;
result is always in little endian byte order, so that a byte-wise result is always in little endian byte order, so that a byte-wise
output yields to the wanted ASCII representation of the message output yields to the wanted ASCII representation of the message
digest. */ digest. */
void *md5_buffer(const char *buffer, size_t len, void *resblock) static void *md5_buffer(const char *buffer, size_t len, void *resblock)
{ {
struct md5_ctx ctx; struct md5_ctx ctx;
@ -340,7 +282,7 @@ void *md5_buffer(const char *buffer, size_t len, void *resblock)
return md5_finish_ctx(&ctx, resblock); return md5_finish_ctx(&ctx, resblock);
} }
void md5_process_bytes(const void *buffer, size_t len, struct md5_ctx *ctx) static void md5_process_bytes(const void *buffer, size_t len, struct md5_ctx *ctx)
{ {
/* When we already have some bits in our internal buffer concatenate /* When we already have some bits in our internal buffer concatenate
both inputs first. */ both inputs first. */
@ -388,7 +330,7 @@ void md5_process_bytes(const void *buffer, size_t len, struct md5_ctx *ctx)
/* Process LEN bytes of BUFFER, accumulating context into CTX. /* Process LEN bytes of BUFFER, accumulating context into CTX.
It is assumed that LEN % 64 == 0. */ It is assumed that LEN % 64 == 0. */
void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx) static void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
{ {
md5_uint32 correct_words[16]; md5_uint32 correct_words[16];
const md5_uint32 *words = buffer; const md5_uint32 *words = buffer;
@ -490,7 +432,6 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
break; break;
case 3: case 3:
temp += FI(B,C,D); temp += FI(B,C,D);
break;
} }
temp += cwp[(int)(*pp++)] + *pc++; temp += cwp[(int)(*pp++)] + *pc++;
temp = CYCLIC (temp, ps[i&3]); temp = CYCLIC (temp, ps[i&3]);
@ -550,6 +491,7 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
/* It is unfortunate that C does not provide an operator for /* It is unfortunate that C does not provide an operator for
cyclic rotation. Hope the C compiler is smart enough. */ cyclic rotation. Hope the C compiler is smart enough. */
/* gcc 2.95.4 seems to be --aaronl */
#define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s))) #define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
/* Before we start, one word to the strange constants. /* Before we start, one word to the strange constants.
@ -707,11 +649,7 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
//---------------------------------------------------------------------------- //----------------------------------------------------------------------------
#define ISWHITE(c) ((c) == ' ' || (c) == '\t') #define ISWHITE(c) ((c) == ' ' || (c) == '\t')
#define IN_CTYPE_DOMAIN(c) 1 #define ISXDIGIT(c) (isxdigit (c))
#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
#define STREQ(a, b) (strcmp ((a), (b)) == 0)
#define TOLOWER(Ch) tolower (Ch)
#define OPENOPTS(BINARY) "r"
/* The minimum length of a valid digest line in a file produced /* The minimum length of a valid digest line in a file produced
by `md5sum FILE' and read by `md5sum -c'. This length does by `md5sum FILE' and read by `md5sum -c'. This length does
@ -731,7 +669,6 @@ static int warn = 0; /* With -w, print a message to standard error warning
static int split_3(char *s, static int split_3(char *s,
size_t s_len, size_t s_len,
unsigned char **u, unsigned char **u,
int *binary,
char **w) char **w)
{ {
size_t i = 0; size_t i = 0;
@ -762,9 +699,8 @@ static int split_3(char *s,
s[i++] = '\0'; s[i++] = '\0';
if (s[i] != ' ' && s[i] != '*') if (s[i] != ' ' && s[i++] != '*')
return FALSE; return FALSE;
*binary = (s[i++] == '*');
/* All characters between the type indicator and end of line are /* All characters between the type indicator and end of line are
significant -- that includes leading and trailing white space. */ significant -- that includes leading and trailing white space. */
@ -812,7 +748,7 @@ static int split_3(char *s,
return TRUE; return TRUE;
} }
static int hex_digits(unsigned char const *s) static inline int hex_digits(unsigned char const *s)
{ {
while (*s) { while (*s) {
if (!ISXDIGIT(*s)) if (!ISXDIGIT(*s))
@ -826,16 +762,15 @@ static int hex_digits(unsigned char const *s)
put the result in *MD5_RESULT. Return non-zero upon failure, zero put the result in *MD5_RESULT. Return non-zero upon failure, zero
to indicate success. */ to indicate success. */
static int md5_file(const char *filename, static int md5_file(const char *filename,
int binary,
unsigned char *md5_result) unsigned char *md5_result)
{ {
FILE *fp; FILE *fp;
if (STREQ(filename, "-")) { if (filename[0] == '-' && filename[1] == '\0') {
have_read_stdin = 1; have_read_stdin = 1;
fp = stdin; fp = stdin;
} else { } else {
fp = fopen(filename, OPENOPTS(binary)); fp = fopen(filename, "r");
if (fp == NULL) { if (fp == NULL) {
perror_msg("%s", filename); perror_msg("%s", filename);
return FALSE; return FALSE;
@ -868,7 +803,7 @@ static int md5_check(const char *checkfile_name)
size_t line_number; size_t line_number;
char line[BUFSIZ]; char line[BUFSIZ];
if (STREQ(checkfile_name, "-")) { if (checkfile_name[0] == '-' && checkfile_name[1] == '\0') {
have_read_stdin = 1; have_read_stdin = 1;
checkfile_stream = stdin; checkfile_stream = stdin;
} else { } else {
@ -883,7 +818,6 @@ static int md5_check(const char *checkfile_name)
do { do {
char *filename; char *filename;
int binary;
unsigned char *md5num; unsigned char *md5num;
int line_length; int line_length;
@ -903,7 +837,7 @@ static int md5_check(const char *checkfile_name)
if (line[line_length - 1] == '\n') if (line[line_length - 1] == '\n')
line[--line_length] = '\0'; line[--line_length] = '\0';
if (split_3(line, line_length, &md5num, &binary, &filename) if (split_3(line, line_length, &md5num, &filename)
|| !hex_digits(md5num)) { || !hex_digits(md5num)) {
if (warn) { if (warn) {
error_msg("%s: %lu: improperly formatted MD5 checksum line", error_msg("%s: %lu: improperly formatted MD5 checksum line",
@ -919,7 +853,7 @@ static int md5_check(const char *checkfile_name)
++n_properly_formated_lines; ++n_properly_formated_lines;
if (md5_file(filename, binary, md5buffer)) { if (md5_file(filename, md5buffer)) {
++n_open_or_read_failures; ++n_open_or_read_failures;
if (!status_only) { if (!status_only) {
printf("%s: FAILED open or read\n", filename); printf("%s: FAILED open or read\n", filename);
@ -930,9 +864,9 @@ static int md5_check(const char *checkfile_name)
/* Compare generated binary number with text representation /* Compare generated binary number with text representation
in check file. Ignore case of hex digits. */ in check file. Ignore case of hex digits. */
for (cnt = 0; cnt < 16; ++cnt) { for (cnt = 0; cnt < 16; ++cnt) {
if (TOLOWER(md5num[2 * cnt]) if (tolower(md5num[2 * cnt])
!= bin2hex[md5buffer[cnt] >> 4] != bin2hex[md5buffer[cnt] >> 4]
|| (TOLOWER(md5num[2 * cnt + 1]) || (tolower(md5num[2 * cnt + 1])
!= (bin2hex[md5buffer[cnt] & 0xf]))) != (bin2hex[md5buffer[cnt] & 0xf])))
break; break;
} }
@ -997,8 +931,8 @@ int md5sum_main(int argc,
char **string = NULL; char **string = NULL;
size_t n_strings = 0; size_t n_strings = 0;
size_t err = 0; size_t err = 0;
int file_type_specified = 0; char file_type_specified = 0;
int binary = 0; char binary = 0;
while ((opt = getopt(argc, argv, "g:bcstw")) != -1) { while ((opt = getopt(argc, argv, "g:bcstw")) != -1) {
switch (opt) { switch (opt) {
@ -1084,9 +1018,9 @@ int md5sum_main(int argc,
int fail; int fail;
char *file = argv[optind]; char *file = argv[optind];
fail = md5_file (file, binary, md5buffer); fail = md5_file (file, md5buffer);
err |= fail; err |= fail;
if (!fail && STREQ(file, "-")) { if (!fail && file[0]=='-' && file[1] == '\0') {
size_t i; size_t i;
for (i = 0; i < 16; ++i) for (i = 0; i < 16; ++i)
printf ("%02x", md5buffer[i]); printf ("%02x", md5buffer[i]);