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oasis-linux-mirror/pkg/openbsd/patch/0029-rsync-Add-implementation-of-MD4.patch
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Michael Forney 06624ed786 openbsd: Update to 7.7
2025-04-29 18:08:11 -07:00

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From f6b4408dd3b8ddfa1dca692e1c52643d857d8102 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/extern.h | 3 +-
usr.bin/rsync/hash.c | 2 +-
usr.bin/rsync/md4.c | 266 +++++++++++++++++++++++++++++++++++++
usr.bin/rsync/md4.h | 47 +++++++
usr.bin/rsync/sender.c | 2 +-
8 files changed, 320 insertions(+), 6 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 8f4bcb532e1..f21c9178487 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/extern.h b/usr.bin/rsync/extern.h
index 55d7bc26ae2..d6b02fd4ad4 100644
--- a/usr.bin/rsync/extern.h
+++ b/usr.bin/rsync/extern.h
@@ -19,7 +19,8 @@
#include <stdint.h>
#include <sys/types.h>
-#include <openssl/md4.h>
+
+#include "md4.h"
/*
* This is the rsync protocol version that we support.
diff --git a/usr.bin/rsync/hash.c b/usr.bin/rsync/hash.c
index 37529e951b4..e3f52047404 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 6469e7f27e5..81b25b9ee78 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"
--
2.49.0
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