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-rw-r--r--libbb/Makefile.in2
-rw-r--r--libbb/hash_fd.c848
2 files changed, 849 insertions, 1 deletions
diff --git a/libbb/Makefile.in b/libbb/Makefile.in
index bb98965c0..979419b62 100644
--- a/libbb/Makefile.in
+++ b/libbb/Makefile.in
@@ -30,7 +30,7 @@ LIBBB_SRC:= \
device_open.c dump.c error_msg.c error_msg_and_die.c find_mount_point.c \
find_pid_by_name.c find_root_device.c fgets_str.c full_read.c \
full_write.c get_last_path_component.c get_line_from_file.c get_ug_id.c \
- get_terminal_width_height.c herror_msg.c herror_msg_and_die.c \
+ get_terminal_width_height.c hash_fd.c herror_msg.c herror_msg_and_die.c \
human_readable.c inet_common.c inode_hash.c interface.c isdirectory.c \
kernel_version.c last_char_is.c llist_add_to.c login.c loop.c \
make_directory.c mode_string.c module_syscalls.c mtab.c mtab_file.c \
diff --git a/libbb/hash_fd.c b/libbb/hash_fd.c
new file mode 100644
index 000000000..b95c1369b
--- /dev/null
+++ b/libbb/hash_fd.c
@@ -0,0 +1,848 @@
+/*
+ * Based on shasum from http://www.netsw.org/crypto/hash/
+ * Majorly hacked up to use Dr Brian Gladman's sha1 code
+ *
+ * Copyright (C) 2003 Glenn L. McGrath
+ * Copyright (C) 2003 Erik Andersen
+ *
+ * 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 of the License, 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.
+ */
+
+#include <byteswap.h>
+#include <endian.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "busybox.h"
+
+
+#ifdef CONFIG_SHA1SUM
+/*
+ ---------------------------------------------------------------------------
+ Begin Dr. Gladman's sha1 code
+ ---------------------------------------------------------------------------
+*/
+
+/*
+ ---------------------------------------------------------------------------
+ Copyright (c) 2002, Dr Brian Gladman <brg@gladman.me.uk>, 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)
+# 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) (((x) & (y)) ^ (~(x) & (z)))
+# define parity(x,y,z) ((x) ^ (y) ^ (z))
+# define maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+
+/* 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 */
+typedef struct {
+ uint32_t count[2];
+ uint32_t hash[5];
+ uint32_t wbuf[16];
+} sha1_ctx;
+
+static void sha1_compile(sha1_ctx ctx[1])
+{
+ 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(sha1_ctx ctx[1])
+{
+ 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 unsigned char data[], unsigned int len, sha1_ctx ctx[1])
+{
+ uint32_t pos = (uint32_t) (ctx->count[0] & SHA1_MASK),
+ 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 */
+
+void sha1_end(unsigned char hval[], sha1_ctx ctx[1])
+{
+ 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 <drepper@gnu.ai.mit.edu>, 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
+ */
+
+# define MD5SUM_SIZE_VS_SPEED 2
+
+/* Handle endian-ness */
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+# define SWAP(n) (n)
+# else
+# define SWAP(n) ((n << 24) | ((n&65280)<<8) | ((n&16711680)>>8) | (n>>24))
+# endif
+
+# if MD5SUM_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 */
+
+typedef u_int32_t md5_uint32;
+
+/* Structure to save state of computation between the single steps. */
+struct md5_ctx {
+ md5_uint32 A;
+ md5_uint32 B;
+ md5_uint32 C;
+ md5_uint32 D;
+
+ md5_uint32 total[2];
+ md5_uint32 buflen;
+ char buffer[128];
+};
+
+/* Initialize structure containing state of computation.
+ * (RFC 1321, 3.3: Step 3)
+ */
+static void md5_begin(struct md5_ctx *ctx)
+{
+ ctx->A = 0x67452301;
+ ctx->B = 0xefcdab89;
+ ctx->C = 0x98badcfe;
+ ctx->D = 0x10325476;
+
+ ctx->total[0] = ctx->total[1] = 0;
+ ctx->buflen = 0;
+}
+
+/* These are the four functions used in the four steps of the MD5 algorithm
+ * and defined in the RFC 1321. The first function is a little bit optimized
+ * (as found in Colin Plumbs public domain implementation).
+ * #define FF(b, c, d) ((b & c) | (~b & d))
+ */
+# define FF(b, c, d) (d ^ (b & (c ^ d)))
+# define FG(b, c, d) FF (d, b, c)
+# define FH(b, c, d) (b ^ c ^ d)
+# define FI(b, c, d) (c ^ (b | ~d))
+
+/* Starting with the result of former calls of this function (or the
+ * initialization function update the context for the next LEN bytes
+ * 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 *ctx)
+{
+ md5_uint32 correct_words[16];
+ const md5_uint32 *words = buffer;
+ size_t nwords = len / sizeof(md5_uint32);
+ const md5_uint32 *endp = words + nwords;
+
+# if MD5SUM_SIZE_VS_SPEED > 0
+ static const md5_uint32 C_array[] = {
+ /* round 1 */
+ 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
+ 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
+ 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
+ 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
+ /* round 2 */
+ 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
+ 0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8,
+ 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
+ 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
+ /* round 3 */
+ 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
+ 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
+ 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
+ 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
+ /* round 4 */
+ 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
+ 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
+ 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
+ 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
+ };
+
+ static const char P_array[] = {
+# if MD5SUM_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 */
+ 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
+ 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_uint32 A = ctx->A;
+ md5_uint32 B = ctx->B;
+ md5_uint32 C = ctx->C;
+ md5_uint32 D = ctx->D;
+
+ /* First increment the byte count. RFC 1321 specifies the possible
+ length of the file up to 2^64 bits. Here we only compute the
+ number of bytes. Do a double word increment. */
+ ctx->total[0] += len;
+ if (ctx->total[0] < len)
+ ++ctx->total[1];
+
+ /* Process all bytes in the buffer with 64 bytes in each round of
+ the loop. */
+ while (words < endp) {
+ md5_uint32 *cwp = correct_words;
+ md5_uint32 A_save = A;
+ md5_uint32 B_save = B;
+ md5_uint32 C_save = C;
+ md5_uint32 D_save = D;
+
+# if MD5SUM_SIZE_VS_SPEED > 1
+# define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
+
+ const md5_uint32 *pc;
+ const char *pp;
+ const char *ps;
+ int i;
+ md5_uint32 temp;
+
+ for (i = 0; i < 16; i++) {
+ cwp[i] = SWAP(words[i]);
+ }
+ words += 16;
+
+# if MD5SUM_SIZE_VS_SPEED > 2
+ pc = C_array;
+ pp = P_array;
+ ps = S_array - 4;
+
+ for (i = 0; i < 64; i++) {
+ if ((i & 0x0f) == 0)
+ ps += 4;
+ temp = A;
+ switch (i >> 4) {
+ case 0:
+ temp += FF(B, C, D);
+ break;
+ case 1:
+ temp += FG(B, C, D);
+ break;
+ case 2:
+ temp += FH(B, C, D);
+ break;
+ case 3:
+ temp += FI(B, C, D);
+ }
+ temp += cwp[(int) (*pp++)] + *pc++;
+ CYCLIC(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+# else
+ pc = C_array;
+ pp = P_array;
+ ps = S_array;
+
+ for (i = 0; i < 16; i++) {
+ temp = A + FF(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ CYCLIC(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+
+ ps += 4;
+ for (i = 0; i < 16; i++) {
+ temp = A + FG(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ CYCLIC(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+ ps += 4;
+ for (i = 0; i < 16; i++) {
+ temp = A + FH(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ CYCLIC(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+ ps += 4;
+ for (i = 0; i < 16; i++) {
+ temp = A + FI(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ CYCLIC(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+
+# endif /* MD5SUM_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
+ unit is a 32-bit word and it is determined to work on words in
+ little endian byte order we perhaps have to change the byte order
+ before the computation. To reduce the work for the next steps
+ we store the swapped words in the array CORRECT_WORDS. */
+
+# define OP(a, b, c, d, s, T) \
+ do \
+ { \
+ a += FF (b, c, d) + (*cwp++ = SWAP (*words)) + T; \
+ ++words; \
+ CYCLIC (a, s); \
+ a += b; \
+ } \
+ while (0)
+
+ /* It is unfortunate that C does not provide an operator for
+ 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)))
+
+ /* Before we start, one word to the strange constants.
+ They are defined in RFC 1321 as
+
+ T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
+ */
+
+# if MD5SUM_SIZE_VS_SPEED == 1
+ const md5_uint32 *pc;
+ const char *pp;
+ int i;
+# endif /* MD5SUM_SIZE_VS_SPEED */
+
+ /* Round 1. */
+# if MD5SUM_SIZE_VS_SPEED == 1
+ pc = C_array;
+ for (i = 0; i < 4; i++) {
+ OP(A, B, C, D, 7, *pc++);
+ OP(D, A, B, C, 12, *pc++);
+ OP(C, D, A, B, 17, *pc++);
+ OP(B, C, D, A, 22, *pc++);
+ }
+# else
+ OP(A, B, C, D, 7, 0xd76aa478);
+ OP(D, A, B, C, 12, 0xe8c7b756);
+ OP(C, D, A, B, 17, 0x242070db);
+ OP(B, C, D, A, 22, 0xc1bdceee);
+ OP(A, B, C, D, 7, 0xf57c0faf);
+ OP(D, A, B, C, 12, 0x4787c62a);
+ OP(C, D, A, B, 17, 0xa8304613);
+ OP(B, C, D, A, 22, 0xfd469501);
+ OP(A, B, C, D, 7, 0x698098d8);
+ OP(D, A, B, C, 12, 0x8b44f7af);
+ OP(C, D, A, B, 17, 0xffff5bb1);
+ OP(B, C, D, A, 22, 0x895cd7be);
+ OP(A, B, C, D, 7, 0x6b901122);
+ 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 */
+
+ /* For the second to fourth round we have the possibly swapped words
+ in CORRECT_WORDS. Redefine the macro to take an additional first
+ argument specifying the function to use. */
+# undef OP
+# define OP(f, a, b, c, d, k, s, T) \
+ do \
+ { \
+ a += f (b, c, d) + correct_words[k] + T; \
+ CYCLIC (a, s); \
+ a += b; \
+ } \
+ while (0)
+
+ /* Round 2. */
+# if MD5SUM_SIZE_VS_SPEED == 1
+ pp = P_array;
+ for (i = 0; i < 4; i++) {
+ OP(FG, A, B, C, D, (int) (*pp++), 5, *pc++);
+ OP(FG, D, A, B, C, (int) (*pp++), 9, *pc++);
+ OP(FG, C, D, A, B, (int) (*pp++), 14, *pc++);
+ OP(FG, B, C, D, A, (int) (*pp++), 20, *pc++);
+ }
+# else
+ OP(FG, A, B, C, D, 1, 5, 0xf61e2562);
+ OP(FG, D, A, B, C, 6, 9, 0xc040b340);
+ OP(FG, C, D, A, B, 11, 14, 0x265e5a51);
+ OP(FG, B, C, D, A, 0, 20, 0xe9b6c7aa);
+ OP(FG, A, B, C, D, 5, 5, 0xd62f105d);
+ OP(FG, D, A, B, C, 10, 9, 0x02441453);
+ OP(FG, C, D, A, B, 15, 14, 0xd8a1e681);
+ OP(FG, B, C, D, A, 4, 20, 0xe7d3fbc8);
+ OP(FG, A, B, C, D, 9, 5, 0x21e1cde6);
+ OP(FG, D, A, B, C, 14, 9, 0xc33707d6);
+ OP(FG, C, D, A, B, 3, 14, 0xf4d50d87);
+ OP(FG, B, C, D, A, 8, 20, 0x455a14ed);
+ OP(FG, A, B, C, D, 13, 5, 0xa9e3e905);
+ 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 */
+
+ /* Round 3. */
+# if MD5SUM_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++);
+ OP(FH, C, D, A, B, (int) (*pp++), 16, *pc++);
+ OP(FH, B, C, D, A, (int) (*pp++), 23, *pc++);
+ }
+# else
+ OP(FH, A, B, C, D, 5, 4, 0xfffa3942);
+ OP(FH, D, A, B, C, 8, 11, 0x8771f681);
+ OP(FH, C, D, A, B, 11, 16, 0x6d9d6122);
+ OP(FH, B, C, D, A, 14, 23, 0xfde5380c);
+ OP(FH, A, B, C, D, 1, 4, 0xa4beea44);
+ OP(FH, D, A, B, C, 4, 11, 0x4bdecfa9);
+ OP(FH, C, D, A, B, 7, 16, 0xf6bb4b60);
+ OP(FH, B, C, D, A, 10, 23, 0xbebfbc70);
+ OP(FH, A, B, C, D, 13, 4, 0x289b7ec6);
+ OP(FH, D, A, B, C, 0, 11, 0xeaa127fa);
+ OP(FH, C, D, A, B, 3, 16, 0xd4ef3085);
+ OP(FH, B, C, D, A, 6, 23, 0x04881d05);
+ OP(FH, A, B, C, D, 9, 4, 0xd9d4d039);
+ 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 */
+
+ /* Round 4. */
+# if MD5SUM_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++);
+ OP(FI, C, D, A, B, (int) (*pp++), 15, *pc++);
+ OP(FI, B, C, D, A, (int) (*pp++), 21, *pc++);
+ }
+# else
+ OP(FI, A, B, C, D, 0, 6, 0xf4292244);
+ OP(FI, D, A, B, C, 7, 10, 0x432aff97);
+ OP(FI, C, D, A, B, 14, 15, 0xab9423a7);
+ OP(FI, B, C, D, A, 5, 21, 0xfc93a039);
+ OP(FI, A, B, C, D, 12, 6, 0x655b59c3);
+ OP(FI, D, A, B, C, 3, 10, 0x8f0ccc92);
+ OP(FI, C, D, A, B, 10, 15, 0xffeff47d);
+ OP(FI, B, C, D, A, 1, 21, 0x85845dd1);
+ OP(FI, A, B, C, D, 8, 6, 0x6fa87e4f);
+ OP(FI, D, A, B, C, 15, 10, 0xfe2ce6e0);
+ OP(FI, C, D, A, B, 6, 15, 0xa3014314);
+ OP(FI, B, C, D, A, 13, 21, 0x4e0811a1);
+ OP(FI, A, B, C, D, 4, 6, 0xf7537e82);
+ 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 */
+
+ /* Add the starting values of the context. */
+ A += A_save;
+ B += B_save;
+ C += C_save;
+ D += D_save;
+ }
+
+ /* Put checksum in context given as argument. */
+ ctx->A = A;
+ ctx->B = B;
+ ctx->C = C;
+ ctx->D = D;
+}
+
+/* Starting with the result of former calls of this function (or the
+ * initialization function update the context for the next LEN bytes
+ * starting at BUFFER.
+ * 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 *ctx)
+{
+ /* When we already have some bits in our internal buffer concatenate
+ both inputs first. */
+ if (ctx->buflen != 0) {
+ size_t left_over = ctx->buflen;
+ size_t add = 128 - left_over > len ? len : 128 - left_over;
+
+ memcpy(&ctx->buffer[left_over], buffer, add);
+ ctx->buflen += add;
+
+ if (left_over + add > 64) {
+ md5_hash_block(ctx->buffer, (left_over + add) & ~63, ctx);
+ /* The regions in the following copy operation cannot overlap. */
+ memcpy(ctx->buffer, &ctx->buffer[(left_over + add) & ~63],
+ (left_over + add) & 63);
+ ctx->buflen = (left_over + add) & 63;
+ }
+
+ buffer = (const char *) buffer + add;
+ len -= add;
+ }
+
+ /* Process available complete blocks. */
+ if (len > 64) {
+ md5_hash_block(buffer, len & ~63, ctx);
+ buffer = (const char *) buffer + (len & ~63);
+ len &= 63;
+ }
+
+ /* Move remaining bytes in internal buffer. */
+ if (len > 0) {
+ memcpy(ctx->buffer, buffer, len);
+ ctx->buflen = len;
+ }
+}
+
+/* Process the remaining bytes in the buffer and 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.
+ */
+static void *md5_end(void *resbuf, struct md5_ctx *ctx)
+{
+ /* Take yet unprocessed bytes into account. */
+ md5_uint32 bytes = ctx->buflen;
+ size_t pad;
+
+ /* Now count remaining bytes. */
+ ctx->total[0] += bytes;
+ if (ctx->total[0] < bytes)
+ ++ctx->total[1];
+
+ pad = bytes >= 56 ? 64 + 56 - bytes : 56 - bytes;
+# if MD5SUM_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 */
+
+ /* Put the 64-bit file length in *bits* at the end of the buffer. */
+ *(md5_uint32 *) & ctx->buffer[bytes + pad] = SWAP(ctx->total[0] << 3);
+ *(md5_uint32 *) & ctx->buffer[bytes + pad + 4] =
+ SWAP(((ctx->total[1] << 3) | (ctx->total[0] >> 29)));
+
+ /* Process last bytes. */
+ md5_hash_block(ctx->buffer, bytes + pad + 8, ctx);
+
+ /* 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;
+}
+#endif /* CONFIG_MD5SUM */
+
+
+
+
+extern int hash_fd(int src_fd, const off_t size, const uint8_t hash_algo,
+ uint8_t * hashval)
+{
+ int result = EXIT_SUCCESS;
+ off_t hashed_count = 0;
+ unsigned int blocksize = 0;
+ unsigned char *buffer = NULL;
+#ifdef CONFIG_SHA1SUM
+ sha1_ctx sha1_cx[1];
+#endif
+#ifdef CONFIG_MD5SUM
+ struct md5_ctx md5_cx;
+#endif
+
+
+#ifdef CONFIG_SHA1SUM
+ if (hash_algo == HASH_SHA1) {
+ /* Ensure that BLOCKSIZE is a multiple of 64. */
+ blocksize = 65536;
+ buffer = malloc(blocksize);
+ }
+#endif
+#ifdef CONFIG_MD5SUM
+ if (hash_algo == HASH_MD5) {
+ blocksize = 4096;
+ buffer = malloc(blocksize + 72);
+ }
+#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. */
+ do {
+ const ssize_t count = bb_full_read(src_fd, buffer, blocksize);
+
+ if (count < 1) {
+ /* count == 0 means short read
+ * count == -1 means read error */
+ result = count - 1;
+ break;
+ }
+ hashed_count += count;
+
+ /* Process buffer */
+#ifdef CONFIG_SHA1SUM
+ if (hash_algo == HASH_SHA1) {
+ sha1_hash(buffer, count, sha1_cx);
+ }
+#endif
+#ifdef CONFIG_MD5SUM
+ if (hash_algo == HASH_MD5) {
+ if (count % 64 == 0) {
+ md5_hash_block(buffer, count, &md5_cx);
+ } else {
+ md5_hash_bytes(buffer, count, &md5_cx);
+ }
+ }
+#endif
+ } while ((size == (off_t) - 1) || (hashed_count < size));
+
+ /* 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 22:14:18 +0000