opkg

0030-rsync-Add-implementation-of-MD4.patch (11896B)

---

 From 01657f2c1445cf4874337a0966a76f24ba9c9536 Mon Sep 17 00:00:00 2001
 From: Michael Forney <mforney@mforney.org>
 Date: Wed, 15 Apr 2020 22:10:06 -0700
 Subject: [PATCH] rsync: Add implementation of MD4
 
 ---
  usr.bin/rsync/Makefile     |   2 +-
  usr.bin/rsync/blocks.c     |   2 +-
  usr.bin/rsync/downloader.c |   2 +-
  usr.bin/rsync/hash.c       |   2 +-
  usr.bin/rsync/md4.c        | 266 +++++++++++++++++++++++++++++++++++++
  usr.bin/rsync/md4.h        |  47 +++++++
  usr.bin/rsync/sender.c     |   2 +-
  7 files changed, 318 insertions(+), 5 deletions(-)
  create mode 100644 usr.bin/rsync/md4.c
  create mode 100644 usr.bin/rsync/md4.h
 
 diff --git a/usr.bin/rsync/Makefile b/usr.bin/rsync/Makefile
 index 3c60f18e07f..172045ce7ac 100644
 --- a/usr.bin/rsync/Makefile
 +++ b/usr.bin/rsync/Makefile
 @@ -2,7 +2,7 @@
  
  PROG=	openrsync
  SRCS=	blocks.c client.c copy.c downloader.c fargs.c flist.c hash.c ids.c \
 -	io.c log.c main.c misc.c mkpath.c mktemp.c receiver.c rmatch.c \
 +	io.c log.c main.c md4.c misc.c mkpath.c mktemp.c receiver.c rmatch.c \
  	rules.c sender.c server.c session.c socket.c symlinks.c uploader.c
  LDADD+= -lcrypto -lm -lutil
  DPADD+= ${LIBCRYPTO} ${LIBM} ${LIBUTIL}
 diff --git a/usr.bin/rsync/blocks.c b/usr.bin/rsync/blocks.c
 index 906733c968e..0a8c3f485d1 100644
 --- a/usr.bin/rsync/blocks.c
 +++ b/usr.bin/rsync/blocks.c
 @@ -26,7 +26,7 @@
  #include <string.h>
  #include <unistd.h>
  
 -#include <openssl/md4.h>
 +#include "md4.h"
  
  #include "extern.h"
  
 diff --git a/usr.bin/rsync/downloader.c b/usr.bin/rsync/downloader.c
 index 07ec334f6b4..6543851fd2c 100644
 --- a/usr.bin/rsync/downloader.c
 +++ b/usr.bin/rsync/downloader.c
 @@ -28,7 +28,7 @@
  #include <time.h>
  #include <unistd.h>
  
 -#include <openssl/md4.h>
 +#include "md4.h"
  
  #include "extern.h"
  
 diff --git a/usr.bin/rsync/hash.c b/usr.bin/rsync/hash.c
 index b87c56f527c..44ae0d26282 100644
 --- a/usr.bin/rsync/hash.c
 +++ b/usr.bin/rsync/hash.c
 @@ -21,7 +21,7 @@
  #include <stdint.h>
  #include <stdlib.h>
  
 -#include <openssl/md4.h>
 +#include "md4.h"
  
  #include "extern.h"
  
 diff --git a/usr.bin/rsync/md4.c b/usr.bin/rsync/md4.c
 new file mode 100644
 index 00000000000..528f985563f
 --- /dev/null
 +++ b/usr.bin/rsync/md4.c
 @@ -0,0 +1,266 @@
 +/*
 + * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
 + * MD4 Message-Digest Algorithm (RFC 1320).
 + *
 + * Homepage:
 + * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md4
 + *
 + * Author:
 + * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
 + *
 + * This software was written by Alexander Peslyak in 2001.  No copyright is
 + * claimed, and the software is hereby placed in the public domain.
 + * In case this attempt to disclaim copyright and place the software in the
 + * public domain is deemed null and void, then the software is
 + * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
 + * general public under the following terms:
 + *
 + * Redistribution and use in source and binary forms, with or without
 + * modification, are permitted.
 + *
 + * There's ABSOLUTELY NO WARRANTY, express or implied.
 + *
 + * (This is a heavily cut-down "BSD license".)
 + *
 + * This differs from Colin Plumb's older public domain implementation in that
 + * no exactly 32-bit integer data type is required (any 32-bit or wider
 + * unsigned integer data type will do), there's no compile-time endianness
 + * configuration, and the function prototypes match OpenSSL's.  No code from
 + * Colin Plumb's implementation has been reused; this comment merely compares
 + * the properties of the two independent implementations.
 + *
 + * The primary goals of this implementation are portability and ease of use.
 + * It is meant to be fast, but not as fast as possible.  Some known
 + * optimizations are not included to reduce source code size and avoid
 + * compile-time configuration.
 + */
 +
 +#include <string.h>
 +
 +#include "md4.h"
 +
 +/*
 + * The basic MD4 functions.
 + *
 + * F and G are optimized compared to their RFC 1320 definitions, with the
 + * optimization for F borrowed from Colin Plumb's MD5 implementation.
 + */
 +#define F(x, y, z)			((z) ^ ((x) & ((y) ^ (z))))
 +#define G(x, y, z)			(((x) & ((y) | (z))) | ((y) & (z)))
 +#define H(x, y, z)			((x) ^ (y) ^ (z))
 +
 +/*
 + * The MD4 transformation for all three rounds.
 + */
 +#define STEP(f, a, b, c, d, x, s) \
 +	(a) += f((b), (c), (d)) + (x); \
 +	(a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s))));
 +
 +/*
 + * SET reads 4 input bytes in little-endian byte order and stores them in a
 + * properly aligned word in host byte order.
 + *
 + * The check for little-endian architectures that tolerate unaligned memory
 + * accesses is just an optimization.  Nothing will break if it fails to detect
 + * a suitable architecture.
 + *
 + * Unfortunately, this optimization may be a C strict aliasing rules violation
 + * if the caller's data buffer has effective type that cannot be aliased by
 + * MD4_u32plus.  In practice, this problem may occur if these MD4 routines are
 + * inlined into a calling function, or with future and dangerously advanced
 + * link-time optimizations.  For the time being, keeping these MD4 routines in
 + * their own translation unit avoids the problem.
 + */
 +#if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
 +#define SET(n) \
 +	(*(MD4_u32plus *)&ptr[(n) * 4])
 +#define GET(n) \
 +	SET(n)
 +#else
 +#define SET(n) \
 +	(ctx->block[(n)] = \
 +	(MD4_u32plus)ptr[(n) * 4] | \
 +	((MD4_u32plus)ptr[(n) * 4 + 1] << 8) | \
 +	((MD4_u32plus)ptr[(n) * 4 + 2] << 16) | \
 +	((MD4_u32plus)ptr[(n) * 4 + 3] << 24))
 +#define GET(n) \
 +	(ctx->block[(n)])
 +#endif
 +
 +/*
 + * This processes one or more 64-byte data blocks, but does NOT update the bit
 + * counters.  There are no alignment requirements.
 + */
 +static const void *body(MD4_CTX *ctx, const void *data, unsigned long size)
 +{
 +	const unsigned char *ptr;
 +	MD4_u32plus a, b, c, d;
 +	MD4_u32plus saved_a, saved_b, saved_c, saved_d;
 +	const MD4_u32plus ac1 = 0x5a827999, ac2 = 0x6ed9eba1;
 +
 +	ptr = (const unsigned char *)data;
 +
 +	a = ctx->a;
 +	b = ctx->b;
 +	c = ctx->c;
 +	d = ctx->d;
 +
 +	do {
 +		saved_a = a;
 +		saved_b = b;
 +		saved_c = c;
 +		saved_d = d;
 +
 +/* Round 1 */
 +		STEP(F, a, b, c, d, SET(0), 3)
 +		STEP(F, d, a, b, c, SET(1), 7)
 +		STEP(F, c, d, a, b, SET(2), 11)
 +		STEP(F, b, c, d, a, SET(3), 19)
 +		STEP(F, a, b, c, d, SET(4), 3)
 +		STEP(F, d, a, b, c, SET(5), 7)
 +		STEP(F, c, d, a, b, SET(6), 11)
 +		STEP(F, b, c, d, a, SET(7), 19)
 +		STEP(F, a, b, c, d, SET(8), 3)
 +		STEP(F, d, a, b, c, SET(9), 7)
 +		STEP(F, c, d, a, b, SET(10), 11)
 +		STEP(F, b, c, d, a, SET(11), 19)
 +		STEP(F, a, b, c, d, SET(12), 3)
 +		STEP(F, d, a, b, c, SET(13), 7)
 +		STEP(F, c, d, a, b, SET(14), 11)
 +		STEP(F, b, c, d, a, SET(15), 19)
 +
 +/* Round 2 */
 +		STEP(G, a, b, c, d, GET(0) + ac1, 3)
 +		STEP(G, d, a, b, c, GET(4) + ac1, 5)
 +		STEP(G, c, d, a, b, GET(8) + ac1, 9)
 +		STEP(G, b, c, d, a, GET(12) + ac1, 13)
 +		STEP(G, a, b, c, d, GET(1) + ac1, 3)
 +		STEP(G, d, a, b, c, GET(5) + ac1, 5)
 +		STEP(G, c, d, a, b, GET(9) + ac1, 9)
 +		STEP(G, b, c, d, a, GET(13) + ac1, 13)
 +		STEP(G, a, b, c, d, GET(2) + ac1, 3)
 +		STEP(G, d, a, b, c, GET(6) + ac1, 5)
 +		STEP(G, c, d, a, b, GET(10) + ac1, 9)
 +		STEP(G, b, c, d, a, GET(14) + ac1, 13)
 +		STEP(G, a, b, c, d, GET(3) + ac1, 3)
 +		STEP(G, d, a, b, c, GET(7) + ac1, 5)
 +		STEP(G, c, d, a, b, GET(11) + ac1, 9)
 +		STEP(G, b, c, d, a, GET(15) + ac1, 13)
 +
 +/* Round 3 */
 +		STEP(H, a, b, c, d, GET(0) + ac2, 3)
 +		STEP(H, d, a, b, c, GET(8) + ac2, 9)
 +		STEP(H, c, d, a, b, GET(4) + ac2, 11)
 +		STEP(H, b, c, d, a, GET(12) + ac2, 15)
 +		STEP(H, a, b, c, d, GET(2) + ac2, 3)
 +		STEP(H, d, a, b, c, GET(10) + ac2, 9)
 +		STEP(H, c, d, a, b, GET(6) + ac2, 11)
 +		STEP(H, b, c, d, a, GET(14) + ac2, 15)
 +		STEP(H, a, b, c, d, GET(1) + ac2, 3)
 +		STEP(H, d, a, b, c, GET(9) + ac2, 9)
 +		STEP(H, c, d, a, b, GET(5) + ac2, 11)
 +		STEP(H, b, c, d, a, GET(13) + ac2, 15)
 +		STEP(H, a, b, c, d, GET(3) + ac2, 3)
 +		STEP(H, d, a, b, c, GET(11) + ac2, 9)
 +		STEP(H, c, d, a, b, GET(7) + ac2, 11)
 +		STEP(H, b, c, d, a, GET(15) + ac2, 15)
 +
 +		a += saved_a;
 +		b += saved_b;
 +		c += saved_c;
 +		d += saved_d;
 +
 +		ptr += 64;
 +	} while (size -= 64);
 +
 +	ctx->a = a;
 +	ctx->b = b;
 +	ctx->c = c;
 +	ctx->d = d;
 +
 +	return ptr;
 +}
 +
 +void MD4_Init(MD4_CTX *ctx)
 +{
 +	ctx->a = 0x67452301;
 +	ctx->b = 0xefcdab89;
 +	ctx->c = 0x98badcfe;
 +	ctx->d = 0x10325476;
 +
 +	ctx->lo = 0;
 +	ctx->hi = 0;
 +}
 +
 +void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
 +{
 +	MD4_u32plus saved_lo;
 +	unsigned long used, available;
 +
 +	saved_lo = ctx->lo;
 +	if ((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo)
 +		ctx->hi++;
 +	ctx->hi += size >> 29;
 +
 +	used = saved_lo & 0x3f;
 +
 +	if (used) {
 +		available = 64 - used;
 +
 +		if (size < available) {
 +			memcpy(&ctx->buffer[used], data, size);
 +			return;
 +		}
 +
 +		memcpy(&ctx->buffer[used], data, available);
 +		data = (const unsigned char *)data + available;
 +		size -= available;
 +		body(ctx, ctx->buffer, 64);
 +	}
 +
 +	if (size >= 64) {
 +		data = body(ctx, data, size & ~(unsigned long)0x3f);
 +		size &= 0x3f;
 +	}
 +
 +	memcpy(ctx->buffer, data, size);
 +}
 +
 +#define OUT(dst, src) \
 +	(dst)[0] = (unsigned char)(src); \
 +	(dst)[1] = (unsigned char)((src) >> 8); \
 +	(dst)[2] = (unsigned char)((src) >> 16); \
 +	(dst)[3] = (unsigned char)((src) >> 24);
 +
 +void MD4_Final(unsigned char *result, MD4_CTX *ctx)
 +{
 +	unsigned long used, available;
 +
 +	used = ctx->lo & 0x3f;
 +
 +	ctx->buffer[used++] = 0x80;
 +
 +	available = 64 - used;
 +
 +	if (available < 8) {
 +		memset(&ctx->buffer[used], 0, available);
 +		body(ctx, ctx->buffer, 64);
 +		used = 0;
 +		available = 64;
 +	}
 +
 +	memset(&ctx->buffer[used], 0, available - 8);
 +
 +	ctx->lo <<= 3;
 +	OUT(&ctx->buffer[56], ctx->lo)
 +	OUT(&ctx->buffer[60], ctx->hi)
 +
 +	body(ctx, ctx->buffer, 64);
 +
 +	OUT(&result[0], ctx->a)
 +	OUT(&result[4], ctx->b)
 +	OUT(&result[8], ctx->c)
 +	OUT(&result[12], ctx->d)
 +
 +	memset(ctx, 0, sizeof(*ctx));
 +}
 diff --git a/usr.bin/rsync/md4.h b/usr.bin/rsync/md4.h
 new file mode 100644
 index 00000000000..ebf5bb555a0
 --- /dev/null
 +++ b/usr.bin/rsync/md4.h
 @@ -0,0 +1,47 @@
 +/*
 + * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
 + * MD4 Message-Digest Algorithm (RFC 1320).
 + *
 + * Homepage:
 + * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md4
 + *
 + * Author:
 + * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
 + *
 + * This software was written by Alexander Peslyak in 2001.  No copyright is
 + * claimed, and the software is hereby placed in the public domain.
 + * In case this attempt to disclaim copyright and place the software in the
 + * public domain is deemed null and void, then the software is
 + * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
 + * general public under the following terms:
 + *
 + * Redistribution and use in source and binary forms, with or without
 + * modification, are permitted.
 + *
 + * There's ABSOLUTELY NO WARRANTY, express or implied.
 + *
 + * See md4.c for more information.
 + */
 +
 +#ifndef _MD4_H
 +#define _MD4_H
 +
 +#include <stdint.h>
 +
 +#define MD4_DIGEST_LENGTH 16
 +
 +/* Any 32-bit or wider unsigned integer data type will do */
 +typedef uint_fast32_t MD4_u32plus;
 +
 +typedef struct {
 +	MD4_u32plus lo, hi;
 +	MD4_u32plus a, b, c, d;
 +	unsigned char buffer[64];
 +	MD4_u32plus block[16];
 +} MD4_CTX;
 +
 +extern void MD4_Init(MD4_CTX *ctx);
 +extern void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size);
 +extern void MD4_Final(unsigned char *result, MD4_CTX *ctx);
 +
 +#endif
 diff --git a/usr.bin/rsync/sender.c b/usr.bin/rsync/sender.c
 index 9dd008def01..2aeb99b64a0 100644
 --- a/usr.bin/rsync/sender.c
 +++ b/usr.bin/rsync/sender.c
 @@ -26,7 +26,7 @@
  #include <string.h>
  #include <unistd.h>
  
 -#include <openssl/md4.h>
 +#include "md4.h"
  
  #include "extern.h"
  
 -- 
 2.35.1