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5cf7c2df6

Rob Landley
Rob Landley
2006-02-21
SOURCE BUG Duration: 3s

Subject

Patch from Devin Bayer to split up hash_fd.c into md5.c and sha1.c. (I tweaked md5_sha1_sum.c to convert some #ifdef CONFIG to if(ENABLE).)

SOURCE BUG

This commit was genuinely broken at the time (not related to our build system): scripts/config/mkconfigs.c (2005-08-01 - 2006-10-05 arasi) uretilen bbconfigopts.h icine .config satirlarini kacissiz, ham newline'larla gömüyordu - gecerli C degildi, busybox'un kendi bb_mkdep araci bile parse edemiyordu (7d219aab7 ile duzeltildi, mkconfigs shell scripte cevrildi)

→ Bu hatanin tam hikayesini ve duzeltme diffini gor

Binary

No binary (build failed)

Architecture & Compiler Flags

Architecture: x86_64-linux-gnu Compiler: gcc (Debian 14.2.0-19) 14.2.0

—

Build Log

(log yok)

Commit Diff GitHub →

Config.in +1 -0coreutils/Config.in +0 -15coreutils/md5_sha1_sum.c +53 -24include/libbb.h +23 -3include/platform.h +15 -0libbb/Config.in +22 -0libbb/hash_fd.c → libbb/md5.c +42 -383libbb/sha1.c +200 -0
Config.in+1 -0
@@ -322,6 +322,7 @@ source networking/Config.in
source procps/Config.in
source shell/Config.in
source sysklogd/Config.in
+source libbb/Config.in
menu 'Debugging Options'
coreutils/Config.in+0 -15
@@ -315,21 +315,6 @@ config CONFIG_MD5SUM
help
md5sum is used to print or check MD5 checksums.
-config CONFIG_MD5SUM_SIZE_VS_SPEED
- int " Trade Bytes for Speed"
- default 2
- range 0 3
- depends on CONFIG_MD5SUM
- help
- Trade binary size versus speed for the md5sum algorithm.
- Approximate values running uClibc and hashing
- linux-2.4.4.tar.bz2 were:
- user times (sec) text size (386)
- 0 (fastest) 1.1 6144
- 1 1.4 5392
- 2 3.0 5088
- 3 (smallest) 5.1 4912
-
config CONFIG_MKDIR
bool "mkdir"
default n
coreutils/md5_sha1_sum.c+53 -24
@@ -15,6 +15,7 @@
#include "busybox.h"
+typedef enum { HASH_SHA1, HASH_MD5 } hash_algo_t;
#define FLAG_SILENT 1
#define FLAG_CHECK 2
@@ -35,39 +36,70 @@ static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
return (hex_value);
}
-static uint8_t *hash_file(const char *filename, uint8_t hash_algo)
+static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
{
- int src_fd = strcmp(filename, "-") == 0 ? STDIN_FILENO :
- open(filename, O_RDONLY);
- if (src_fd == -1) {
+ int src_fd, hash_len, count;
+ union _ctx_ {
+ sha1_ctx_t sha1;
+ md5_ctx_t md5;
+ } context;
+ uint8_t *hash_value = NULL;
+ RESERVE_CONFIG_UBUFFER(in_buf, 4096);
+ void (*update)(const void*, size_t, void*);
+ void (*final)(void*, void*);
+
+ if(strcmp(filename, "-") == 0) {
+ src_fd = STDIN_FILENO;
+ } else if(0 > (src_fd = open(filename, O_RDONLY))) {
bb_perror_msg("%s", filename);
return NULL;
+ }
+
+ // figure specific hash algorithims
+ if(ENABLE_MD5SUM && hash_algo==HASH_MD5) {
+ md5_begin(&context.md5);
+ update = (void (*)(const void*, size_t, void*))md5_hash;
+ final = (void (*)(void*, void*))md5_end;
+ hash_len = 16;
+ } else if(ENABLE_SHA1SUM && hash_algo==HASH_SHA1) {
+ sha1_begin(&context.sha1);
+ update = (void (*)(const void*, size_t, void*))sha1_hash;
+ final = (void (*)(void*, void*))sha1_end;
+ hash_len = 20;
} else {
- uint8_t *hash_value;
- RESERVE_CONFIG_UBUFFER(hash_value_bin, 20);
- hash_value = hash_fd(src_fd, -1, hash_algo, hash_value_bin) != -2 ?
- hash_bin_to_hex(hash_value_bin, hash_algo == HASH_MD5 ? 16 : 20) :
- NULL;
- RELEASE_CONFIG_BUFFER(hash_value_bin);
+ bb_error_msg_and_die("algotithm not supported");
+ }
+
+
+ while(0 < (count = read(src_fd, in_buf, sizeof in_buf))) {
+ update(in_buf, count, &context);
+ }
+
+ if(count == 0) {
+ final(in_buf, &context);
+ hash_value = hash_bin_to_hex(in_buf, hash_len);
+ }
+
+ RELEASE_CONFIG_BUFFER(in_buf);
+
+ if(src_fd != STDIN_FILENO) {
close(src_fd);
- return hash_value;
}
+
+ return hash_value;
}
/* This could become a common function for md5 as well, by using md5_stream */
-static int hash_files(int argc, char **argv, const uint8_t hash_algo)
+static int hash_files(int argc, char **argv, hash_algo_t hash_algo)
{
int return_value = EXIT_SUCCESS;
uint8_t *hash_value;
-
-#ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
unsigned int flags;
- flags = bb_getopt_ulflags(argc, argv, "scw");
-#endif
+ if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK)
+ flags = bb_getopt_ulflags(argc, argv, "scw");
-#ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
- if (!(flags & FLAG_CHECK)) {
+ if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && !(flags & FLAG_CHECK)) {
if (flags & FLAG_SILENT) {
bb_error_msg_and_die
("the -s option is meaningful only when verifying checksums");
@@ -76,13 +108,12 @@ static int hash_files(int argc, char **argv, const uint8_t hash_algo)
("the -w option is meaningful only when verifying checksums");
}
}
-#endif
if (argc == optind) {
argv[argc++] = "-";
}
-#ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
- if (flags & FLAG_CHECK) {
+
+ if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && flags & FLAG_CHECK) {
FILE *pre_computed_stream;
int count_total = 0;
int count_failed = 0;
@@ -139,9 +170,7 @@ static int hash_files(int argc, char **argv, const uint8_t hash_algo)
if (bb_fclose_nonstdin(pre_computed_stream) == EOF) {
bb_perror_msg_and_die("Couldnt close file %s", file_ptr);
}
- } else
-#endif
- {
+ } else {
while (optind < argc) {
char *file_ptr = argv[optind++];
include/libbb.h+23 -3
@@ -464,9 +464,29 @@ extern void vfork_daemon_rexec(int nochdir, int noclose,
extern int get_terminal_width_height(int fd, int *width, int *height);
extern unsigned long get_ug_id(const char *s, long (*__bb_getxxnam)(const char *));
-#define HASH_SHA1 1
-#define HASH_MD5 2
-extern int hash_fd(int fd, const size_t size, const uint8_t hash_algo, uint8_t *hashval);
+typedef struct _sha1_ctx_t_ {
+ uint32_t count[2];
+ uint32_t hash[5];
+ uint32_t wbuf[16];
+} sha1_ctx_t;
+
+void sha1_begin(sha1_ctx_t *ctx);
+void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx);
+void *sha1_end(void *resbuf, sha1_ctx_t *ctx);
+
+typedef struct _md5_ctx_t_ {
+ uint32_t A;
+ uint32_t B;
+ uint32_t C;
+ uint32_t D;
+ uint32_t total[2];
+ uint32_t buflen;
+ char buffer[128];
+} md5_ctx_t;
+
+void md5_begin(md5_ctx_t *ctx);
+void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
+void *md5_end(void *resbuf, md5_ctx_t *ctx);
/* busybox.h will include dmalloc later for us, else include it here. */
#if !defined _BB_INTERNAL_H_ && defined DMALLOC
include/platform.h+15 -0
@@ -78,4 +78,19 @@
# endif
#endif
+/* ---- Endian Detection ------------------------------------ */
+#ifndef __APPLE__
+ #include <byteswap.h>
+ #include <endian.h>
+#endif
+
+#ifdef __BIG_ENDIAN__
+ #define BB_BIG_ENDIAN 1
+#elif __BYTE_ORDER == __BIG_ENDIAN
+ #define BB_BIG_ENDIAN 1
+#else
+ #define BB_BIG_ENDIAN 0
+#endif
+
+
#endif /* platform.h */
libbb/Config.in+22 -0
@@ -0,0 +1,22 @@
+#
+# For a description of the syntax of this configuration file,
+# see scripts/kbuild/config-language.txt.
+#
+
+menu "Busybox Library Tuning"
+
+config CONFIG_MD5_SIZE_VS_SPEED
+ int " MD5: Trade Bytes for Speed"
+ default 2
+ range 0 3
+ help
+ Trade binary size versus speed for the md5sum algorithm.
+ Approximate values running uClibc and hashing
+ linux-2.4.4.tar.bz2 were:
+ user times (sec) text size (386)
+ 0 (fastest) 1.1 6144
+ 1 1.4 5392
+ 2 3.0 5088
+ 3 (smallest) 5.1 4912
+
+endmenu
libbb/hash_fd.c → libbb/md5.c+42 -383
@@ -1,15 +1,16 @@
/*
- * Based on shasum from http://www.netsw.org/crypto/hash/
- * Majorly hacked up to use Dr Brian Gladman's sha1 code
- *
+ * md5.c - Compute MD5 checksum of strings according to the
+ * definition of MD5 in RFC 1321 from April 1992.
+ *
+ * Written by Ulrich Drepper <[email protected]>, 1995.
+ *
+ * Copyright (C) 1995-1999 Free Software Foundation, Inc.
+ * Copyright (C) 2001 Manuel Novoa III
* Copyright (C) 2003 Glenn L. McGrath
* Copyright (C) 2003 Erik Andersen
*
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
-
-#include <byteswap.h>
-#include <endian.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
@@ -20,253 +21,14 @@
#include "busybox.h"
-
-#ifdef CONFIG_SHA1SUM
-/*
- ---------------------------------------------------------------------------
- Begin Dr. Gladman's sha1 code
- ---------------------------------------------------------------------------
-*/
-
-/*
- ---------------------------------------------------------------------------
- Copyright (c) 2002, Dr Brian Gladman <[email protected]>, Worcester, UK.
- All rights reserved.
-
- LICENSE TERMS
-
- The free distribution and use of this software in both source and binary
- form is allowed (with or without changes) provided that:
-
- 1. distributions of this source code include the above copyright
- notice, this list of conditions and the following disclaimer;
-
- 2. distributions in binary form include the above copyright
- notice, this list of conditions and the following disclaimer
- in the documentation and/or other associated materials;
-
- 3. the copyright holder's name is not used to endorse products
- built using this software without specific written permission.
-
- ALTERNATIVELY, provided that this notice is retained in full, this product
- may be distributed under the terms of the GNU General Public License (GPL),
- in which case the provisions of the GPL apply INSTEAD OF those given above.
-
- DISCLAIMER
-
- This software is provided 'as is' with no explicit or implied warranties
- in respect of its properties, including, but not limited to, correctness
- and/or fitness for purpose.
- ---------------------------------------------------------------------------
- Issue Date: 10/11/2002
-
- This is a byte oriented version of SHA1 that operates on arrays of bytes
- stored in memory. It runs at 22 cycles per byte on a Pentium P4 processor
-*/
-
-# define SHA1_BLOCK_SIZE 64
-# define SHA1_DIGEST_SIZE 20
-# define SHA1_HASH_SIZE SHA1_DIGEST_SIZE
-# define SHA2_GOOD 0
-# define SHA2_BAD 1
-
-# define rotl32(x,n) (((x) << n) | ((x) >> (32 - n)))
-
-# if __BYTE_ORDER == __BIG_ENDIAN
-# define swap_b32(x) (x)
-# elif defined(bswap_32)
-# define swap_b32(x) bswap_32(x)
+# if CONFIG_MD5_SIZE_VS_SPEED < 0 || CONFIG_MD5_SIZE_VS_SPEED > 3
+# define MD5_SIZE_VS_SPEED 2
# else
-# define swap_b32(x) ((rotl32((x), 8) & 0x00ff00ff) | (rotl32((x), 24) & 0xff00ff00))
-# endif /* __BYTE_ORDER */
-
-# define SHA1_MASK (SHA1_BLOCK_SIZE - 1)
-
-/* reverse byte order in 32-bit words */
-#define ch(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
-#define parity(x,y,z) ((x) ^ (y) ^ (z))
-#define maj(x,y,z) (((x) & (y)) | ((z) & ((x) | (y))))
-
-/* A normal version as set out in the FIPS. This version uses */
-/* partial loop unrolling and is optimised for the Pentium 4 */
-# define rnd(f,k) \
- t = a; a = rotl32(a,5) + f(b,c,d) + e + k + w[i]; \
- e = d; d = c; c = rotl32(b, 30); b = t
-
-/* type to hold the SHA1 context */
-struct sha1_ctx_t {
- uint32_t count[2];
- uint32_t hash[5];
- uint32_t wbuf[16];
-};
-
-static void sha1_compile(struct sha1_ctx_t *ctx)
-{
- uint32_t w[80], i, a, b, c, d, e, t;
-
- /* note that words are compiled from the buffer into 32-bit */
- /* words in big-endian order so an order reversal is needed */
- /* here on little endian machines */
- for (i = 0; i < SHA1_BLOCK_SIZE / 4; ++i)
- w[i] = swap_b32(ctx->wbuf[i]);
-
- for (i = SHA1_BLOCK_SIZE / 4; i < 80; ++i)
- w[i] = rotl32(w[i - 3] ^ w[i - 8] ^ w[i - 14] ^ w[i - 16], 1);
-
- a = ctx->hash[0];
- b = ctx->hash[1];
- c = ctx->hash[2];
- d = ctx->hash[3];
- e = ctx->hash[4];
-
- for (i = 0; i < 20; ++i) {
- rnd(ch, 0x5a827999);
- }
-
- for (i = 20; i < 40; ++i) {
- rnd(parity, 0x6ed9eba1);
- }
-
- for (i = 40; i < 60; ++i) {
- rnd(maj, 0x8f1bbcdc);
- }
-
- for (i = 60; i < 80; ++i) {
- rnd(parity, 0xca62c1d6);
- }
-
- ctx->hash[0] += a;
- ctx->hash[1] += b;
- ctx->hash[2] += c;
- ctx->hash[3] += d;
- ctx->hash[4] += e;
-}
-
-static void sha1_begin(struct sha1_ctx_t *ctx)
-{
- ctx->count[0] = ctx->count[1] = 0;
- ctx->hash[0] = 0x67452301;
- ctx->hash[1] = 0xefcdab89;
- ctx->hash[2] = 0x98badcfe;
- ctx->hash[3] = 0x10325476;
- ctx->hash[4] = 0xc3d2e1f0;
-}
-
-/* SHA1 hash data in an array of bytes into hash buffer and call the */
-/* hash_compile function as required. */
-static void sha1_hash(const void *data, size_t len, void *ctx_v)
-{
- struct sha1_ctx_t *ctx = (struct sha1_ctx_t *) ctx_v;
- uint32_t pos = (uint32_t) (ctx->count[0] & SHA1_MASK);
- uint32_t freeb = SHA1_BLOCK_SIZE - pos;
- const unsigned char *sp = data;
-
- if ((ctx->count[0] += len) < len)
- ++(ctx->count[1]);
-
- while (len >= freeb) { /* tranfer whole blocks while possible */
- memcpy(((unsigned char *) ctx->wbuf) + pos, sp, freeb);
- sp += freeb;
- len -= freeb;
- freeb = SHA1_BLOCK_SIZE;
- pos = 0;
- sha1_compile(ctx);
- }
-
- memcpy(((unsigned char *) ctx->wbuf) + pos, sp, len);
-}
-
-/* SHA1 Final padding and digest calculation */
-# if __BYTE_ORDER == __LITTLE_ENDIAN
-static uint32_t mask[4] = { 0x00000000, 0x000000ff, 0x0000ffff, 0x00ffffff };
-static uint32_t bits[4] = { 0x00000080, 0x00008000, 0x00800000, 0x80000000 };
-# else
-static uint32_t mask[4] = { 0x00000000, 0xff000000, 0xffff0000, 0xffffff00 };
-static uint32_t bits[4] = { 0x80000000, 0x00800000, 0x00008000, 0x00000080 };
-# endif /* __BYTE_ORDER */
-
-static void sha1_end(unsigned char hval[], struct sha1_ctx_t *ctx)
-{
- uint32_t i, cnt = (uint32_t) (ctx->count[0] & SHA1_MASK);
-
- /* mask out the rest of any partial 32-bit word and then set */
- /* the next byte to 0x80. On big-endian machines any bytes in */
- /* the buffer will be at the top end of 32 bit words, on little */
- /* endian machines they will be at the bottom. Hence the AND */
- /* and OR masks above are reversed for little endian systems */
- ctx->wbuf[cnt >> 2] =
- (ctx->wbuf[cnt >> 2] & mask[cnt & 3]) | bits[cnt & 3];
-
- /* we need 9 or more empty positions, one for the padding byte */
- /* (above) and eight for the length count. If there is not */
- /* enough space pad and empty the buffer */
- if (cnt > SHA1_BLOCK_SIZE - 9) {
- if (cnt < 60)
- ctx->wbuf[15] = 0;
- sha1_compile(ctx);
- cnt = 0;
- } else /* compute a word index for the empty buffer positions */
- cnt = (cnt >> 2) + 1;
-
- while (cnt < 14) /* and zero pad all but last two positions */
- ctx->wbuf[cnt++] = 0;
-
- /* assemble the eight byte counter in the buffer in big-endian */
- /* format */
-
- ctx->wbuf[14] = swap_b32((ctx->count[1] << 3) | (ctx->count[0] >> 29));
- ctx->wbuf[15] = swap_b32(ctx->count[0] << 3);
-
- sha1_compile(ctx);
-
- /* extract the hash value as bytes in case the hash buffer is */
- /* misaligned for 32-bit words */
-
- for (i = 0; i < SHA1_DIGEST_SIZE; ++i)
- hval[i] = (unsigned char) (ctx->hash[i >> 2] >> 8 * (~i & 3));
-}
-
-/*
- ---------------------------------------------------------------------------
- End of Dr. Gladman's sha1 code
- ---------------------------------------------------------------------------
-*/
-#endif /* CONFIG_SHA1 */
-
-
-
-
-
-#ifdef CONFIG_MD5SUM
-/*
- * md5sum.c - Compute MD5 checksum of files or strings according to the
- * definition of MD5 in RFC 1321 from April 1992.
- *
- * Copyright (C) 1995-1999 Free Software Foundation, Inc.
- * Written by Ulrich Drepper <[email protected]>, 1995.
- *
- *
- * June 29, 2001 Manuel Novoa III
- *
- * Added MD5SUM_SIZE_VS_SPEED configuration option.
- *
- * Current valid values, with data from my system for comparison, are:
- * (using uClibc and running on linux-2.4.4.tar.bz2)
- * user times (sec) text size (386)
- * 0 (fastest) 1.1 6144
- * 1 1.4 5392
- * 2 3.0 5088
- * 3 (smallest) 5.1 4912
- */
-
-# if CONFIG_MD5SUM_SIZE_VS_SPEED < 0 || CONFIG_MD5SUM_SIZE_VS_SPEED > 3
-# define MD5SUM_SIZE_VS_SPEED 2
-# else
-# define MD5SUM_SIZE_VS_SPEED CONFIG_MD5SUM_SIZE_VS_SPEED
+# define MD5_SIZE_VS_SPEED CONFIG_MD5_SIZE_VS_SPEED
# endif
/* Handle endian-ness */
-# if __BYTE_ORDER == __LITTLE_ENDIAN
+# if !BB_BIG_ENDIAN
# define SWAP(n) (n)
# elif defined(bswap_32)
# define SWAP(n) bswap_32(n)
@@ -274,27 +36,16 @@ static void sha1_end(unsigned char hval[], struct sha1_ctx_t *ctx)
# define SWAP(n) ((n << 24) | ((n&65280)<<8) | ((n&16711680)>>8) | (n>>24))
# endif
-# if MD5SUM_SIZE_VS_SPEED == 0
+# if MD5_SIZE_VS_SPEED == 0
/* This array contains the bytes used to pad the buffer to the next
64-byte boundary. (RFC 1321, 3.1: Step 1) */
static const unsigned char fillbuf[64] = { 0x80, 0 /* , 0, 0, ... */ };
-# endif /* MD5SUM_SIZE_VS_SPEED == 0 */
-
-/* Structure to save state of computation between the single steps. */
-struct md5_ctx_t {
- uint32_t A;
- uint32_t B;
- uint32_t C;
- uint32_t D;
- uint32_t total[2];
- uint32_t buflen;
- char buffer[128];
-};
+# endif /* MD5_SIZE_VS_SPEED == 0 */
/* Initialize structure containing state of computation.
* (RFC 1321, 3.3: Step 3)
*/
-static void md5_begin(struct md5_ctx_t *ctx)
+void md5_begin(md5_ctx_t *ctx)
{
ctx->A = 0x67452301;
ctx->B = 0xefcdab89;
@@ -320,14 +71,14 @@ static void md5_begin(struct md5_ctx_t *ctx)
* starting at BUFFER.
* It is necessary that LEN is a multiple of 64!!!
*/
-static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx)
+void md5_hash_block(const void *buffer, size_t len, md5_ctx_t *ctx)
{
uint32_t correct_words[16];
const uint32_t *words = buffer;
size_t nwords = len / sizeof(uint32_t);
const uint32_t *endp = words + nwords;
-# if MD5SUM_SIZE_VS_SPEED > 0
+# if MD5_SIZE_VS_SPEED > 0
static const uint32_t C_array[] = {
/* round 1 */
0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
@@ -352,22 +103,22 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
};
static const char P_array[] = {
-# if MD5SUM_SIZE_VS_SPEED > 1
+# if MD5_SIZE_VS_SPEED > 1
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */
-# endif /* MD5SUM_SIZE_VS_SPEED > 1 */
+# endif /* MD5_SIZE_VS_SPEED > 1 */
1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, /* 2 */
5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, /* 3 */
0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9 /* 4 */
};
-# if MD5SUM_SIZE_VS_SPEED > 1
+# if MD5_SIZE_VS_SPEED > 1
static const char S_array[] = {
7, 12, 17, 22,
5, 9, 14, 20,
4, 11, 16, 23,
6, 10, 15, 21
};
-# endif /* MD5SUM_SIZE_VS_SPEED > 1 */
+# endif /* MD5_SIZE_VS_SPEED > 1 */
# endif
uint32_t A = ctx->A;
@@ -391,7 +142,7 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
uint32_t C_save = C;
uint32_t D_save = D;
-# if MD5SUM_SIZE_VS_SPEED > 1
+# if MD5_SIZE_VS_SPEED > 1
# define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
const uint32_t *pc;
@@ -405,7 +156,7 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
}
words += 16;
-# if MD5SUM_SIZE_VS_SPEED > 2
+# if MD5_SIZE_VS_SPEED > 2
pc = C_array;
pp = P_array;
ps = S_array - 4;
@@ -481,7 +232,7 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
B = temp;
}
-# endif /* MD5SUM_SIZE_VS_SPEED > 2 */
+# endif /* MD5_SIZE_VS_SPEED > 2 */
# else
/* First round: using the given function, the context and a constant
the next context is computed. Because the algorithms processing
@@ -511,14 +262,14 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
*/
-# if MD5SUM_SIZE_VS_SPEED == 1
+# if MD5_SIZE_VS_SPEED == 1
const uint32_t *pc;
const char *pp;
int i;
-# endif /* MD5SUM_SIZE_VS_SPEED */
+# endif /* MD5_SIZE_VS_SPEED */
/* Round 1. */
-# if MD5SUM_SIZE_VS_SPEED == 1
+# if MD5_SIZE_VS_SPEED == 1
pc = C_array;
for (i = 0; i < 4; i++) {
OP(A, B, C, D, 7, *pc++);
@@ -543,7 +294,7 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
OP(D, A, B, C, 12, 0xfd987193);
OP(C, D, A, B, 17, 0xa679438e);
OP(B, C, D, A, 22, 0x49b40821);
-# endif /* MD5SUM_SIZE_VS_SPEED == 1 */
+# endif /* MD5_SIZE_VS_SPEED == 1 */
/* For the second to fourth round we have the possibly swapped words
in CORRECT_WORDS. Redefine the macro to take an additional first
@@ -559,7 +310,7 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
while (0)
/* Round 2. */
-# if MD5SUM_SIZE_VS_SPEED == 1
+# if MD5_SIZE_VS_SPEED == 1
pp = P_array;
for (i = 0; i < 4; i++) {
OP(FG, A, B, C, D, (int) (*pp++), 5, *pc++);
@@ -584,10 +335,10 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
OP(FG, D, A, B, C, 2, 9, 0xfcefa3f8);
OP(FG, C, D, A, B, 7, 14, 0x676f02d9);
OP(FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
-# endif /* MD5SUM_SIZE_VS_SPEED == 1 */
+# endif /* MD5_SIZE_VS_SPEED == 1 */
/* Round 3. */
-# if MD5SUM_SIZE_VS_SPEED == 1
+# if MD5_SIZE_VS_SPEED == 1
for (i = 0; i < 4; i++) {
OP(FH, A, B, C, D, (int) (*pp++), 4, *pc++);
OP(FH, D, A, B, C, (int) (*pp++), 11, *pc++);
@@ -611,10 +362,10 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
OP(FH, D, A, B, C, 12, 11, 0xe6db99e5);
OP(FH, C, D, A, B, 15, 16, 0x1fa27cf8);
OP(FH, B, C, D, A, 2, 23, 0xc4ac5665);
-# endif /* MD5SUM_SIZE_VS_SPEED == 1 */
+# endif /* MD5_SIZE_VS_SPEED == 1 */
/* Round 4. */
-# if MD5SUM_SIZE_VS_SPEED == 1
+# if MD5_SIZE_VS_SPEED == 1
for (i = 0; i < 4; i++) {
OP(FI, A, B, C, D, (int) (*pp++), 6, *pc++);
OP(FI, D, A, B, C, (int) (*pp++), 10, *pc++);
@@ -638,8 +389,8 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
OP(FI, D, A, B, C, 11, 10, 0xbd3af235);
OP(FI, C, D, A, B, 2, 15, 0x2ad7d2bb);
OP(FI, B, C, D, A, 9, 21, 0xeb86d391);
-# endif /* MD5SUM_SIZE_VS_SPEED == 1 */
-# endif /* MD5SUM_SIZE_VS_SPEED > 1 */
+# endif /* MD5_SIZE_VS_SPEED == 1 */
+# endif /* MD5_SIZE_VS_SPEED > 1 */
/* Add the starting values of the context. */
A += A_save;
@@ -661,7 +412,7 @@ static void md5_hash_block(const void *buffer, size_t len, struct md5_ctx_t *ctx
* It is NOT required that LEN is a multiple of 64.
*/
-static void md5_hash_bytes(const void *buffer, size_t len, struct md5_ctx_t *ctx)
+static void md5_hash_bytes(const void *buffer, size_t len, md5_ctx_t *ctx)
{
/* When we already have some bits in our internal buffer concatenate
both inputs first. */
@@ -698,12 +449,12 @@ static void md5_hash_bytes(const void *buffer, size_t len, struct md5_ctx_t *ctx
}
}
-static void md5_hash(const void *buffer, size_t length, void *md5_ctx)
+void md5_hash(const void *data, size_t length, md5_ctx_t *ctx)
{
if (length % 64 == 0) {
- md5_hash_block(buffer, length, md5_ctx);
+ md5_hash_block(data, length, ctx);
} else {
- md5_hash_bytes(buffer, length, md5_ctx);
+ md5_hash_bytes(data, length, ctx);
}
}
@@ -715,7 +466,7 @@ static void md5_hash(const void *buffer, size_t length, void *md5_ctx)
* IMPORTANT: On some systems it is required that RESBUF is correctly
* aligned for a 32 bits value.
*/
-static void *md5_end(void *resbuf, struct md5_ctx_t *ctx)
+void *md5_end(void *resbuf, md5_ctx_t *ctx)
{
/* Take yet unprocessed bytes into account. */
uint32_t bytes = ctx->buflen;
@@ -727,12 +478,12 @@ static void *md5_end(void *resbuf, struct md5_ctx_t *ctx)
++ctx->total[1];
pad = bytes >= 56 ? 64 + 56 - bytes : 56 - bytes;
-# if MD5SUM_SIZE_VS_SPEED > 0
+# if MD5_SIZE_VS_SPEED > 0
memset(&ctx->buffer[bytes], 0, pad);
ctx->buffer[bytes] = 0x80;
# else
memcpy(&ctx->buffer[bytes], fillbuf, pad);
-# endif /* MD5SUM_SIZE_VS_SPEED > 0 */
+# endif /* MD5_SIZE_VS_SPEED > 0 */
/* Put the 64-bit file length in *bits* at the end of the buffer. */
*(uint32_t *) & ctx->buffer[bytes + pad] = SWAP(ctx->total[0] << 3);
@@ -756,96 +507,4 @@ static void *md5_end(void *resbuf, struct md5_ctx_t *ctx)
return resbuf;
}
-#endif /* CONFIG_MD5SUM */
-
-
-
-
-extern int hash_fd(int src_fd, const size_t size, const uint8_t hash_algo,
- uint8_t * hashval)
-{
- int result = EXIT_SUCCESS;
-// size_t hashed_count = 0;
- size_t blocksize = 0;
- size_t remaining = size;
- unsigned char *buffer = NULL;
- void (*hash_fn_ptr)(const void *, size_t, void *) = NULL;
- void *cx = NULL;
-
-#ifdef CONFIG_SHA1SUM
- struct sha1_ctx_t sha1_cx;
-#endif
-#ifdef CONFIG_MD5SUM
- struct md5_ctx_t md5_cx;
-#endif
-
-
-#ifdef CONFIG_SHA1SUM
- if (hash_algo == HASH_SHA1) {
- /* Ensure that BLOCKSIZE is a multiple of 64. */
- blocksize = 65536;
- buffer = xmalloc(blocksize);
- hash_fn_ptr = sha1_hash;
- cx = &sha1_cx;
- }
-#endif
-#ifdef CONFIG_MD5SUM
- if (hash_algo == HASH_MD5) {
- blocksize = 4096;
- buffer = xmalloc(blocksize + 72);
- hash_fn_ptr = md5_hash;
- cx = &md5_cx;
- }
-#endif
-
- /* Initialize the computation context. */
-#ifdef CONFIG_SHA1SUM
- if (hash_algo == HASH_SHA1) {
- sha1_begin(&sha1_cx);
- }
-#endif
-#ifdef CONFIG_MD5SUM
- if (hash_algo == HASH_MD5) {
- md5_begin(&md5_cx);
- }
-#endif
- /* Iterate over full file contents. */
- while ((remaining == (size_t) -1) || (remaining > 0)) {
- size_t read_try;
- ssize_t read_got;
-
- if (remaining > blocksize) {
- read_try = blocksize;
- } else {
- read_try = remaining;
- }
- read_got = bb_full_read(src_fd, buffer, read_try);
- if (read_got < 1) {
- /* count == 0 means short read
- * count == -1 means read error */
- result = read_got - 1;
- break;
- }
- if (remaining != (size_t) -1) {
- remaining -= read_got;
- }
-
- /* Process buffer */
- hash_fn_ptr(buffer, read_got, cx);
- }
- /* Finalize and write the hash into our buffer. */
-#ifdef CONFIG_SHA1SUM
- if (hash_algo == HASH_SHA1) {
- sha1_end(hashval, &sha1_cx);
- }
-#endif
-#ifdef CONFIG_MD5SUM
- if (hash_algo == HASH_MD5) {
- md5_end(hashval, &md5_cx);
- }
-#endif
-
- free(buffer);
- return result;
-}
libbb/sha1.c+200 -0
@@ -0,0 +1,200 @@
+/*
+ * Based on shasum from http://www.netsw.org/crypto/hash/
+ * Majorly hacked up to use Dr Brian Gladman's sha1 code
+ *
+ * Copyright (C) 2002 Dr Brian Gladman <[email protected]>, Worcester, UK.
+ * Copyright (C) 2003 Glenn L. McGrath
+ * Copyright (C) 2003 Erik Andersen
+ *
+ * LICENSE TERMS
+ *
+ * The free distribution and use of this software in both source and binary
+ * form is allowed (with or without changes) provided that:
+ *
+ * 1. distributions of this source code include the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ *
+ * 2. distributions in binary form include the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other associated materials;
+ *
+ * 3. the copyright holder's name is not used to endorse products
+ * built using this software without specific written permission.
+ *
+ * ALTERNATIVELY, provided that this notice is retained in full, this product
+ * may be distributed under the terms of the GNU General Public License (GPL),
+ * in which case the provisions of the GPL apply INSTEAD OF those given above.
+ *
+ * DISCLAIMER
+ *
+ * This software is provided 'as is' with no explicit or implied warranties
+ * in respect of its properties, including, but not limited to, correctness
+ * and/or fitness for purpose.
+ * ---------------------------------------------------------------------------
+ * Issue Date: 10/11/2002
+ *
+ * This is a byte oriented version of SHA1 that operates on arrays of bytes
+ * stored in memory. It runs at 22 cycles per byte on a Pentium P4 processor
+ */
+
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "busybox.h"
+
+# define SHA1_BLOCK_SIZE 64
+# define SHA1_DIGEST_SIZE 20
+# define SHA1_HASH_SIZE SHA1_DIGEST_SIZE
+# define SHA2_GOOD 0
+# define SHA2_BAD 1
+
+# define rotl32(x,n) (((x) << n) | ((x) >> (32 - n)))
+
+# define SHA1_MASK (SHA1_BLOCK_SIZE - 1)
+
+/* reverse byte order in 32-bit words */
+#define ch(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
+#define parity(x,y,z) ((x) ^ (y) ^ (z))
+#define maj(x,y,z) (((x) & (y)) | ((z) & ((x) | (y))))
+
+/* A normal version as set out in the FIPS. This version uses */
+/* partial loop unrolling and is optimised for the Pentium 4 */
+# define rnd(f,k) \
+ t = a; a = rotl32(a,5) + f(b,c,d) + e + k + w[i]; \
+ e = d; d = c; c = rotl32(b, 30); b = t
+
+
+static void sha1_compile(sha1_ctx_t *ctx)
+{
+ uint32_t w[80], i, a, b, c, d, e, t;
+
+ /* note that words are compiled from the buffer into 32-bit */
+ /* words in big-endian order so an order reversal is needed */
+ /* here on little endian machines */
+ for (i = 0; i < SHA1_BLOCK_SIZE / 4; ++i)
+ w[i] = htonl(ctx->wbuf[i]);
+
+ for (i = SHA1_BLOCK_SIZE / 4; i < 80; ++i)
+ w[i] = rotl32(w[i - 3] ^ w[i - 8] ^ w[i - 14] ^ w[i - 16], 1);
+
+ a = ctx->hash[0];
+ b = ctx->hash[1];
+ c = ctx->hash[2];
+ d = ctx->hash[3];
+ e = ctx->hash[4];
+
+ for (i = 0; i < 20; ++i) {
+ rnd(ch, 0x5a827999);
+ }
+
+ for (i = 20; i < 40; ++i) {
+ rnd(parity, 0x6ed9eba1);
+ }
+
+ for (i = 40; i < 60; ++i) {
+ rnd(maj, 0x8f1bbcdc);
+ }
+
+ for (i = 60; i < 80; ++i) {
+ rnd(parity, 0xca62c1d6);
+ }
+
+ ctx->hash[0] += a;
+ ctx->hash[1] += b;
+ ctx->hash[2] += c;
+ ctx->hash[3] += d;
+ ctx->hash[4] += e;
+}
+
+void sha1_begin(sha1_ctx_t *ctx)
+{
+ ctx->count[0] = ctx->count[1] = 0;
+ ctx->hash[0] = 0x67452301;
+ ctx->hash[1] = 0xefcdab89;
+ ctx->hash[2] = 0x98badcfe;
+ ctx->hash[3] = 0x10325476;
+ ctx->hash[4] = 0xc3d2e1f0;
+}
+
+/* SHA1 hash data in an array of bytes into hash buffer and call the */
+/* hash_compile function as required. */
+void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx)
+{
+ uint32_t pos = (uint32_t) (ctx->count[0] & SHA1_MASK);
+ uint32_t freeb = SHA1_BLOCK_SIZE - pos;
+ const unsigned char *sp = data;
+
+ if ((ctx->count[0] += length) < length)
+ ++(ctx->count[1]);
+
+ while (length >= freeb) { /* tranfer whole blocks while possible */
+ memcpy(((unsigned char *) ctx->wbuf) + pos, sp, freeb);
+ sp += freeb;
+ length -= freeb;
+ freeb = SHA1_BLOCK_SIZE;
+ pos = 0;
+ sha1_compile(ctx);
+ }
+
+ memcpy(((unsigned char *) ctx->wbuf) + pos, sp, length);
+}
+
+void *sha1_end(void *resbuf, sha1_ctx_t *ctx)
+{
+ /* SHA1 Final padding and digest calculation */
+ #if BB_BIG_ENDIAN
+ static uint32_t mask[4] = { 0x00000000, 0xff000000, 0xffff0000, 0xffffff00 };
+ static uint32_t bits[4] = { 0x80000000, 0x00800000, 0x00008000, 0x00000080 };
+ #else
+ static uint32_t mask[4] = { 0x00000000, 0x000000ff, 0x0000ffff, 0x00ffffff };
+ static uint32_t bits[4] = { 0x00000080, 0x00008000, 0x00800000, 0x80000000 };
+ #endif /* __BYTE_ORDER */
+
+ uint8_t *hval = resbuf;
+ uint32_t i, cnt = (uint32_t) (ctx->count[0] & SHA1_MASK);
+
+ /* mask out the rest of any partial 32-bit word and then set */
+ /* the next byte to 0x80. On big-endian machines any bytes in */
+ /* the buffer will be at the top end of 32 bit words, on little */
+ /* endian machines they will be at the bottom. Hence the AND */
+ /* and OR masks above are reversed for little endian systems */
+ ctx->wbuf[cnt >> 2] =
+ (ctx->wbuf[cnt >> 2] & mask[cnt & 3]) | bits[cnt & 3];
+
+ /* we need 9 or more empty positions, one for the padding byte */
+ /* (above) and eight for the length count. If there is not */
+ /* enough space pad and empty the buffer */
+ if (cnt > SHA1_BLOCK_SIZE - 9) {
+ if (cnt < 60)
+ ctx->wbuf[15] = 0;
+ sha1_compile(ctx);
+ cnt = 0;
+ } else /* compute a word index for the empty buffer positions */
+ cnt = (cnt >> 2) + 1;
+
+ while (cnt < 14) /* and zero pad all but last two positions */
+ ctx->wbuf[cnt++] = 0;
+
+ /* assemble the eight byte counter in the buffer in big-endian */
+ /* format */
+
+ ctx->wbuf[14] = htonl((ctx->count[1] << 3) | (ctx->count[0] >> 29));
+ ctx->wbuf[15] = htonl(ctx->count[0] << 3);
+
+ sha1_compile(ctx);
+
+ /* extract the hash value as bytes in case the hash buffer is */
+ /* misaligned for 32-bit words */
+
+ for (i = 0; i < SHA1_DIGEST_SIZE; ++i)
+ hval[i] = (unsigned char) (ctx->hash[i >> 2] >> 8 * (~i & 3));
+
+ return resbuf;
+}
+
+