Git-Url:
http://git.frugalware.org/gitweb/gitweb.cgi?p=pacman-g2.git;a=commitdiff;h=3743871b0bc8742d27f11d7d729594c2e029c2f7
commit 3743871b0bc8742d27f11d7d729594c2e029c2f7
Author: Michel Hermier <herm...@frugalware.org>
Date: Wed May 15 08:20:11 2013 +0200
libflib: Move SHA1 hash code from libpacman to flib.
diff --git a/lib/libflib/Makefile.am b/lib/libflib/Makefile.am
index 7c10a1c..3c304bb 100644
--- a/lib/libflib/Makefile.am
+++ b/lib/libflib/Makefile.am
@@ -11,7 +11,8 @@ noinst_LTLIBRARIES = libflib.la
#lib_LTLIBRARIES = libflib.la
libflib_crypto_hash_SOURCES = \
- fmd5.c
+ fmd5.c \
+ fsha1.c
libflib_crypto_SOURCES = \
$(libflib_crypto_hash_SOURCES)
diff --git a/lib/libflib/fsha1.c b/lib/libflib/fsha1.c
new file mode 100644
index 0000000..36a6499
--- /dev/null
+++ b/lib/libflib/fsha1.c
@@ -0,0 +1,368 @@
+/* sha.c - Functions to compute SHA1 message digest of files or
+ memory blocks according to the NIST specification FIPS-180-1.
+
+ Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
+
+ 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 Scott G. Miller
+ Credits:
+ Robert Klep <rob...@ilse.nl> -- Expansion function fix
+*/
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "fsha1.h"
+
+#include <sys/types.h>
+
+#include <stdlib.h>
+#include <time.h>
+#include <string.h>
+
+/*
+ Not-swap is a macro that does an endian swap on architectures that are
+ big-endian, as SHA needs some data in a little-endian format
+*/
+
+#ifdef WORDS_BIGENDIAN
+# define NOTSWAP(n) (n)
+# define SWAP(n) \
+ (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
+#else
+# define NOTSWAP(n) \
+ (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
+# define SWAP(n) (n)
+#endif
+
+#define BLOCKSIZE 4096
+/* Ensure that BLOCKSIZE is a multiple of 64. */
+#if BLOCKSIZE % 64 != 0
+/* FIXME-someday (soon?): use #error instead of this kludge. */
+"invalid BLOCKSIZE"
+#endif
+
+/* 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, ... */ };
+
+
+/* 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 sha_process_block (const void *buffer, size_t len,
+ struct sha_ctx *ctx);
+
+/* Put result from CTX in first 20 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 *sha_read_ctx (const struct sha_ctx *ctx, void *resbuf);
+
+/*
+ Takes a pointer to a 160 bit block of data (five 32 bit ints) and
+ intializes it to the start constants of the SHA1 algorithm. This
+ must be called before using hash in the call to sha_hash
+*/
+void
+f_sha1_init (struct sha_ctx *ctx)
+{
+ ctx->A = 0x67452301;
+ ctx->B = 0xefcdab89;
+ ctx->C = 0x98badcfe;
+ ctx->D = 0x10325476;
+ ctx->E = 0xc3d2e1f0;
+
+ ctx->total[0] = ctx->total[1] = 0;
+ ctx->buflen = 0;
+}
+
+/* Put result from CTX in first 20 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. */
+static void *
+sha_read_ctx (const struct sha_ctx *ctx, void *resbuf)
+{
+ ((sha_uint32 *) resbuf)[0] = NOTSWAP (ctx->A);
+ ((sha_uint32 *) resbuf)[1] = NOTSWAP (ctx->B);
+ ((sha_uint32 *) resbuf)[2] = NOTSWAP (ctx->C);
+ ((sha_uint32 *) resbuf)[3] = NOTSWAP (ctx->D);
+ ((sha_uint32 *) resbuf)[4] = NOTSWAP (ctx->E);
+
+ return resbuf;
+}
+
+/* Process the remaining bytes in the internal buffer and the usual
+ prolog according to the standard and write the result to RESBUF.
+
+ IMPORTANT: On some systems it is required that RESBUF is correctly
+ aligned for a 32 bits value. */
+void *
+f_sha1_fini (struct sha_ctx *ctx, void *resbuf)
+{
+ /* Take yet unprocessed bytes into account. */
+ sha_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;
+ memcpy (&ctx->buffer[bytes], fillbuf, pad);
+
+ /* Put the 64-bit file length in *bits* at the end of the buffer. */
+ *(sha_uint32 *) &ctx->buffer[bytes + pad + 4] = NOTSWAP (ctx->total[0] << 3);
+ *(sha_uint32 *) &ctx->buffer[bytes + pad] = NOTSWAP ((ctx->total[1] << 3) |
+ (ctx->total[0] >> 29));
+
+ /* Process last bytes. */
+ sha_process_block (ctx->buffer, bytes + pad + 8, ctx);
+
+ return sha_read_ctx (ctx, resbuf);
+}
+
+/* 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. */
+void
+f_sha1_update (struct sha_ctx *ctx, const void *buffer, size_t len)
+{
+ /* 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 (ctx->buflen > 64)
+ {
+ sha_process_block (ctx->buffer, ctx->buflen & ~63, ctx);
+
+ ctx->buflen &= 63;
+ /* The regions in the following copy operation cannot overlap. */
+ memcpy (ctx->buffer, &ctx->buffer[(left_over + add) & ~63],
+ ctx->buflen);
+ }
+
+ buffer = (const char *) buffer + add;
+ len -= add;
+ }
+
+ /* Process available complete blocks. */
+ if (len >= 64)
+ {
+#if !defined(_STRING_ARCH_unaligned) || !_STRING_ARCH_unaligned
+/* To check alignment gcc has an appropriate operator. Other
+ compilers don't. */
+# if __GNUC__ >= 2
+# define UNALIGNED_P(p) (((sha_uintptr) p) % __alignof__ (sha_uint32) != 0)
+# else
+# define UNALIGNED_P(p) (((sha_uintptr) p) % sizeof (sha_uint32) != 0)
+# endif
+ if (UNALIGNED_P (buffer))
+ while (len > 64)
+ {
+ sha_process_block (memcpy (ctx->buffer, buffer, 64), 64, ctx);
+ buffer = (const char *) buffer + 64;
+ len -= 64;
+ }
+ else
+#endif
+ {
+ sha_process_block (buffer, len & ~63, ctx);
+ buffer = (const char *) buffer + (len & ~63);
+ len &= 63;
+ }
+ }
+
+ /* Move remaining bytes in internal buffer. */
+ if (len > 0)
+ {
+ size_t left_over = ctx->buflen;
+
+ memcpy (&ctx->buffer[left_over], buffer, len);
+ left_over += len;
+ if (left_over >= 64)
+ {
+ sha_process_block (ctx->buffer, 64, ctx);
+ left_over -= 64;
+ memcpy (ctx->buffer, &ctx->buffer[64], left_over);
+ }
+ ctx->buflen = left_over;
+ }
+}
+
+/* --- Code below is the primary difference between md5.c and sha.c --- */
+
+/* SHA1 round constants */
+#define K1 0x5a827999L
+#define K2 0x6ed9eba1L
+#define K3 0x8f1bbcdcL
+#define K4 0xca62c1d6L
+
+/* Round functions. Note that F2 is the same as F4. */
+#define F1(B,C,D) ( D ^ ( B & ( C ^ D ) ) )
+#define F2(B,C,D) (B ^ C ^ D)
+#define F3(B,C,D) ( ( B & C ) | ( D & ( B | C ) ) )
+#define F4(B,C,D) (B ^ C ^ D)
+
+/* Process LEN bytes of BUFFER, accumulating context into CTX.
+ It is assumed that LEN % 64 == 0.
+ Most of this code comes from GnuPG's cipher/sha1.c. */
+
+static void
+sha_process_block (const void *buffer, size_t len, struct sha_ctx *ctx)
+{
+ const sha_uint32 *words = buffer;
+ size_t nwords = len / sizeof (sha_uint32);
+ const sha_uint32 *endp = words + nwords;
+ sha_uint32 x[16];
+ sha_uint32 a = ctx->A;
+ sha_uint32 b = ctx->B;
+ sha_uint32 c = ctx->C;
+ sha_uint32 d = ctx->D;
+ sha_uint32 e = ctx->E;
+
+ /* 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];
+
+#define M(I) ( tm = x[I&0x0f] ^ x[(I-14)&0x0f] \
+ ^ x[(I-8)&0x0f] ^ x[(I-3)&0x0f] \
+ , (x[I&0x0f] = rol(tm, 1)) )
+
+#define R(A,B,C,D,E,F,K,M) do { E += rol( A, 5 ) \
+ + F( B, C, D ) \
+ + K \
+ + M; \
+ B = rol( B, 30 ); \
+ } while(0)
+
+ while (words < endp)
+ {
+ sha_uint32 tm;
+ int t;
+ /* FIXME: see sha1.c for a better implementation. */
+ for (t = 0; t < 16; t++)
+ {
+ x[t] = NOTSWAP (*words);
+ words++;
+ }
+
+ R( a, b, c, d, e, F1, K1, x[ 0] );
+ R( e, a, b, c, d, F1, K1, x[ 1] );
+ R( d, e, a, b, c, F1, K1, x[ 2] );
+ R( c, d, e, a, b, F1, K1, x[ 3] );
+ R( b, c, d, e, a, F1, K1, x[ 4] );
+ R( a, b, c, d, e, F1, K1, x[ 5] );
+ R( e, a, b, c, d, F1, K1, x[ 6] );
+ R( d, e, a, b, c, F1, K1, x[ 7] );
+ R( c, d, e, a, b, F1, K1, x[ 8] );
+ R( b, c, d, e, a, F1, K1, x[ 9] );
+ R( a, b, c, d, e, F1, K1, x[10] );
+ R( e, a, b, c, d, F1, K1, x[11] );
+ R( d, e, a, b, c, F1, K1, x[12] );
+ R( c, d, e, a, b, F1, K1, x[13] );
+ R( b, c, d, e, a, F1, K1, x[14] );
+ R( a, b, c, d, e, F1, K1, x[15] );
+ R( e, a, b, c, d, F1, K1, M(16) );
+ R( d, e, a, b, c, F1, K1, M(17) );
+ R( c, d, e, a, b, F1, K1, M(18) );
+ R( b, c, d, e, a, F1, K1, M(19) );
+ R( a, b, c, d, e, F2, K2, M(20) );
+ R( e, a, b, c, d, F2, K2, M(21) );
+ R( d, e, a, b, c, F2, K2, M(22) );
+ R( c, d, e, a, b, F2, K2, M(23) );
+ R( b, c, d, e, a, F2, K2, M(24) );
+ R( a, b, c, d, e, F2, K2, M(25) );
+ R( e, a, b, c, d, F2, K2, M(26) );
+ R( d, e, a, b, c, F2, K2, M(27) );
+ R( c, d, e, a, b, F2, K2, M(28) );
+ R( b, c, d, e, a, F2, K2, M(29) );
+ R( a, b, c, d, e, F2, K2, M(30) );
+ R( e, a, b, c, d, F2, K2, M(31) );
+ R( d, e, a, b, c, F2, K2, M(32) );
+ R( c, d, e, a, b, F2, K2, M(33) );
+ R( b, c, d, e, a, F2, K2, M(34) );
+ R( a, b, c, d, e, F2, K2, M(35) );
+ R( e, a, b, c, d, F2, K2, M(36) );
+ R( d, e, a, b, c, F2, K2, M(37) );
+ R( c, d, e, a, b, F2, K2, M(38) );
+ R( b, c, d, e, a, F2, K2, M(39) );
+ R( a, b, c, d, e, F3, K3, M(40) );
+ R( e, a, b, c, d, F3, K3, M(41) );
+ R( d, e, a, b, c, F3, K3, M(42) );
+ R( c, d, e, a, b, F3, K3, M(43) );
+ R( b, c, d, e, a, F3, K3, M(44) );
+ R( a, b, c, d, e, F3, K3, M(45) );
+ R( e, a, b, c, d, F3, K3, M(46) );
+ R( d, e, a, b, c, F3, K3, M(47) );
+ R( c, d, e, a, b, F3, K3, M(48) );
+ R( b, c, d, e, a, F3, K3, M(49) );
+ R( a, b, c, d, e, F3, K3, M(50) );
+ R( e, a, b, c, d, F3, K3, M(51) );
+ R( d, e, a, b, c, F3, K3, M(52) );
+ R( c, d, e, a, b, F3, K3, M(53) );
+ R( b, c, d, e, a, F3, K3, M(54) );
+ R( a, b, c, d, e, F3, K3, M(55) );
+ R( e, a, b, c, d, F3, K3, M(56) );
+ R( d, e, a, b, c, F3, K3, M(57) );
+ R( c, d, e, a, b, F3, K3, M(58) );
+ R( b, c, d, e, a, F3, K3, M(59) );
+ R( a, b, c, d, e, F4, K4, M(60) );
+ R( e, a, b, c, d, F4, K4, M(61) );
+ R( d, e, a, b, c, F4, K4, M(62) );
+ R( c, d, e, a, b, F4, K4, M(63) );
+ R( b, c, d, e, a, F4, K4, M(64) );
+ R( a, b, c, d, e, F4, K4, M(65) );
+ R( e, a, b, c, d, F4, K4, M(66) );
+ R( d, e, a, b, c, F4, K4, M(67) );
+ R( c, d, e, a, b, F4, K4, M(68) );
+ R( b, c, d, e, a, F4, K4, M(69) );
+ R( a, b, c, d, e, F4, K4, M(70) );
+ R( e, a, b, c, d, F4, K4, M(71) );
+ R( d, e, a, b, c, F4, K4, M(72) );
+ R( c, d, e, a, b, F4, K4, M(73) );
+ R( b, c, d, e, a, F4, K4, M(74) );
+ R( a, b, c, d, e, F4, K4, M(75) );
+ R( e, a, b, c, d, F4, K4, M(76) );
+ R( d, e, a, b, c, F4, K4, M(77) );
+ R( c, d, e, a, b, F4, K4, M(78) );
+ R( b, c, d, e, a, F4, K4, M(79) );
+
+ a = ctx->A += a;
+ b = ctx->B += b;
+ c = ctx->C += c;
+ d = ctx->D += d;
+ e = ctx->E += e;
+ }
+}
+
diff --git a/lib/libflib/fsha1.h b/lib/libflib/fsha1.h
new file mode 100644
index 0000000..f6aea71
--- /dev/null
+++ b/lib/libflib/fsha1.h
@@ -0,0 +1,63 @@
+/* Declarations of functions and data types used for SHA1 sum
+ library functions.
+ Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
+
+ 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. */
+
+#include <stdio.h>
+#include <limits.h>
+
+#define rol(x,n) ( ((x) << (n)) | ((x) >> (32 -(n))) )
+/* The code below is from md5.h (from coreutils), little modifications */
+#define UINT_MAX_32_BITS 4294967295U
+
+#if UINT_MAX == UINT_MAX_32_BITS
+ typedef unsigned int sha_uint32;
+#else
+#if USHRT_MAX == UINT_MAX_32_BITS
+ typedef unsigned short sha_uint32;
+#else
+#if ULONG_MAX == UINT_MAX_32_BITS
+ typedef unsigned long sha_uint32;
+#else
+ /* The following line is intended to evoke an error. Using #error is not
portable enough. */
+#error "Cannot determine unsigned 32-bit data type"
+#endif
+#endif
+#endif
+/* We have to make a guess about the integer type equivalent in size
+ to pointers which should always be correct. */
+typedef unsigned long int sha_uintptr;
+
+/* Structure to save state of computation between the single steps. */
+struct sha_ctx
+{
+ sha_uint32 A;
+ sha_uint32 B;
+ sha_uint32 C;
+ sha_uint32 D;
+ sha_uint32 E;
+
+ sha_uint32 total[2];
+ sha_uint32 buflen;
+ char buffer[128];
+};
+
+typedef struct sha_ctx sha_ctx;
+
+void f_sha1_init (sha_ctx *);
+void f_sha1_update (sha_ctx *, const void *, size_t);
+void *f_sha1_fini (sha_ctx *, void *);
+
diff --git a/lib/libpacman/sha1.c b/lib/libpacman/sha1.c
index 159c5d3..2f560f9 100644
--- a/lib/libpacman/sha1.c
+++ b/lib/libpacman/sha1.c
@@ -27,348 +27,7 @@
#endif
#include "util.h"
-#include "sha1.h"
-
-#include <sys/types.h>
-
-#include <stdlib.h>
-#include <time.h>
-#include <string.h>
-
-/*
- Not-swap is a macro that does an endian swap on architectures that are
- big-endian, as SHA needs some data in a little-endian format
-*/
-
-#ifdef WORDS_BIGENDIAN
-# define NOTSWAP(n) (n)
-# define SWAP(n) \
- (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
-#else
-# define NOTSWAP(n) \
- (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
-# define SWAP(n) (n)
-#endif
-
-#define BLOCKSIZE 4096
-/* Ensure that BLOCKSIZE is a multiple of 64. */
-#if BLOCKSIZE % 64 != 0
-/* FIXME-someday (soon?): use #error instead of this kludge. */
-"invalid BLOCKSIZE"
-#endif
-
-/* 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, ... */ };
-
-
-/* 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 sha_process_block (const void *buffer, size_t len,
- struct sha_ctx *ctx);
-
-/* 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 sha_process_bytes (const void *buffer, size_t len,
- struct sha_ctx *ctx);
-
-/* Put result from CTX in first 20 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 *sha_read_ctx (const struct sha_ctx *ctx, void *resbuf);
-
-/*
- Takes a pointer to a 160 bit block of data (five 32 bit ints) and
- intializes it to the start constants of the SHA1 algorithm. This
- must be called before using hash in the call to sha_hash
-*/
-static void
-sha_init_ctx (struct sha_ctx *ctx)
-{
- ctx->A = 0x67452301;
- ctx->B = 0xefcdab89;
- ctx->C = 0x98badcfe;
- ctx->D = 0x10325476;
- ctx->E = 0xc3d2e1f0;
-
- ctx->total[0] = ctx->total[1] = 0;
- ctx->buflen = 0;
-}
-
-/* Put result from CTX in first 20 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. */
-static void *
-sha_read_ctx (const struct sha_ctx *ctx, void *resbuf)
-{
- ((sha_uint32 *) resbuf)[0] = NOTSWAP (ctx->A);
- ((sha_uint32 *) resbuf)[1] = NOTSWAP (ctx->B);
- ((sha_uint32 *) resbuf)[2] = NOTSWAP (ctx->C);
- ((sha_uint32 *) resbuf)[3] = NOTSWAP (ctx->D);
- ((sha_uint32 *) resbuf)[4] = NOTSWAP (ctx->E);
-
- return resbuf;
-}
-
-/* Process the remaining bytes in the internal buffer and the usual
- prolog according to the standard and write the result to RESBUF.
-
- IMPORTANT: On some systems it is required that RESBUF is correctly
- aligned for a 32 bits value. */
-static void *
-sha_finish_ctx (struct sha_ctx *ctx, void *resbuf)
-{
- /* Take yet unprocessed bytes into account. */
- sha_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;
- memcpy (&ctx->buffer[bytes], fillbuf, pad);
-
- /* Put the 64-bit file length in *bits* at the end of the buffer. */
- *(sha_uint32 *) &ctx->buffer[bytes + pad + 4] = NOTSWAP (ctx->total[0] << 3);
- *(sha_uint32 *) &ctx->buffer[bytes + pad] = NOTSWAP ((ctx->total[1] << 3) |
- (ctx->total[0] >> 29));
-
- /* Process last bytes. */
- sha_process_block (ctx->buffer, bytes + pad + 8, ctx);
-
- return sha_read_ctx (ctx, resbuf);
-}
-
-static void
-sha_process_bytes (const void *buffer, size_t len, struct sha_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 (ctx->buflen > 64)
- {
- sha_process_block (ctx->buffer, ctx->buflen & ~63, ctx);
-
- ctx->buflen &= 63;
- /* The regions in the following copy operation cannot overlap. */
- memcpy (ctx->buffer, &ctx->buffer[(left_over + add) & ~63],
- ctx->buflen);
- }
-
- buffer = (const char *) buffer + add;
- len -= add;
- }
-
- /* Process available complete blocks. */
- if (len >= 64)
- {
-#if !defined(_STRING_ARCH_unaligned) || !_STRING_ARCH_unaligned
-/* To check alignment gcc has an appropriate operator. Other
- compilers don't. */
-# if __GNUC__ >= 2
-# define UNALIGNED_P(p) (((sha_uintptr) p) % __alignof__ (sha_uint32) != 0)
-# else
-# define UNALIGNED_P(p) (((sha_uintptr) p) % sizeof (sha_uint32) != 0)
-# endif
- if (UNALIGNED_P (buffer))
- while (len > 64)
- {
- sha_process_block (memcpy (ctx->buffer, buffer, 64), 64, ctx);
- buffer = (const char *) buffer + 64;
- len -= 64;
- }
- else
-#endif
- {
- sha_process_block (buffer, len & ~63, ctx);
- buffer = (const char *) buffer + (len & ~63);
- len &= 63;
- }
- }
-
- /* Move remaining bytes in internal buffer. */
- if (len > 0)
- {
- size_t left_over = ctx->buflen;
-
- memcpy (&ctx->buffer[left_over], buffer, len);
- left_over += len;
- if (left_over >= 64)
- {
- sha_process_block (ctx->buffer, 64, ctx);
- left_over -= 64;
- memcpy (ctx->buffer, &ctx->buffer[64], left_over);
- }
- ctx->buflen = left_over;
- }
-}
-
-/* --- Code below is the primary difference between md5.c and sha.c --- */
-
-/* SHA1 round constants */
-#define K1 0x5a827999L
-#define K2 0x6ed9eba1L
-#define K3 0x8f1bbcdcL
-#define K4 0xca62c1d6L
-
-/* Round functions. Note that F2 is the same as F4. */
-#define F1(B,C,D) ( D ^ ( B & ( C ^ D ) ) )
-#define F2(B,C,D) (B ^ C ^ D)
-#define F3(B,C,D) ( ( B & C ) | ( D & ( B | C ) ) )
-#define F4(B,C,D) (B ^ C ^ D)
-
-/* Process LEN bytes of BUFFER, accumulating context into CTX.
- It is assumed that LEN % 64 == 0.
- Most of this code comes from GnuPG's cipher/sha1.c. */
-
-static void
-sha_process_block (const void *buffer, size_t len, struct sha_ctx *ctx)
-{
- const sha_uint32 *words = buffer;
- size_t nwords = len / sizeof (sha_uint32);
- const sha_uint32 *endp = words + nwords;
- sha_uint32 x[16];
- sha_uint32 a = ctx->A;
- sha_uint32 b = ctx->B;
- sha_uint32 c = ctx->C;
- sha_uint32 d = ctx->D;
- sha_uint32 e = ctx->E;
-
- /* 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];
-
-#define M(I) ( tm = x[I&0x0f] ^ x[(I-14)&0x0f] \
- ^ x[(I-8)&0x0f] ^ x[(I-3)&0x0f] \
- , (x[I&0x0f] = rol(tm, 1)) )
-
-#define R(A,B,C,D,E,F,K,M) do { E += rol( A, 5 ) \
- + F( B, C, D ) \
- + K \
- + M; \
- B = rol( B, 30 ); \
- } while(0)
-
- while (words < endp)
- {
- sha_uint32 tm;
- int t;
- /* FIXME: see sha1.c for a better implementation. */
- for (t = 0; t < 16; t++)
- {
- x[t] = NOTSWAP (*words);
- words++;
- }
-
- R( a, b, c, d, e, F1, K1, x[ 0] );
- R( e, a, b, c, d, F1, K1, x[ 1] );
- R( d, e, a, b, c, F1, K1, x[ 2] );
- R( c, d, e, a, b, F1, K1, x[ 3] );
- R( b, c, d, e, a, F1, K1, x[ 4] );
- R( a, b, c, d, e, F1, K1, x[ 5] );
- R( e, a, b, c, d, F1, K1, x[ 6] );
- R( d, e, a, b, c, F1, K1, x[ 7] );
- R( c, d, e, a, b, F1, K1, x[ 8] );
- R( b, c, d, e, a, F1, K1, x[ 9] );
- R( a, b, c, d, e, F1, K1, x[10] );
- R( e, a, b, c, d, F1, K1, x[11] );
- R( d, e, a, b, c, F1, K1, x[12] );
- R( c, d, e, a, b, F1, K1, x[13] );
- R( b, c, d, e, a, F1, K1, x[14] );
- R( a, b, c, d, e, F1, K1, x[15] );
- R( e, a, b, c, d, F1, K1, M(16) );
- R( d, e, a, b, c, F1, K1, M(17) );
- R( c, d, e, a, b, F1, K1, M(18) );
- R( b, c, d, e, a, F1, K1, M(19) );
- R( a, b, c, d, e, F2, K2, M(20) );
- R( e, a, b, c, d, F2, K2, M(21) );
- R( d, e, a, b, c, F2, K2, M(22) );
- R( c, d, e, a, b, F2, K2, M(23) );
- R( b, c, d, e, a, F2, K2, M(24) );
- R( a, b, c, d, e, F2, K2, M(25) );
- R( e, a, b, c, d, F2, K2, M(26) );
- R( d, e, a, b, c, F2, K2, M(27) );
- R( c, d, e, a, b, F2, K2, M(28) );
- R( b, c, d, e, a, F2, K2, M(29) );
- R( a, b, c, d, e, F2, K2, M(30) );
- R( e, a, b, c, d, F2, K2, M(31) );
- R( d, e, a, b, c, F2, K2, M(32) );
- R( c, d, e, a, b, F2, K2, M(33) );
- R( b, c, d, e, a, F2, K2, M(34) );
- R( a, b, c, d, e, F2, K2, M(35) );
- R( e, a, b, c, d, F2, K2, M(36) );
- R( d, e, a, b, c, F2, K2, M(37) );
- R( c, d, e, a, b, F2, K2, M(38) );
- R( b, c, d, e, a, F2, K2, M(39) );
- R( a, b, c, d, e, F3, K3, M(40) );
- R( e, a, b, c, d, F3, K3, M(41) );
- R( d, e, a, b, c, F3, K3, M(42) );
- R( c, d, e, a, b, F3, K3, M(43) );
- R( b, c, d, e, a, F3, K3, M(44) );
- R( a, b, c, d, e, F3, K3, M(45) );
- R( e, a, b, c, d, F3, K3, M(46) );
- R( d, e, a, b, c, F3, K3, M(47) );
- R( c, d, e, a, b, F3, K3, M(48) );
- R( b, c, d, e, a, F3, K3, M(49) );
- R( a, b, c, d, e, F3, K3, M(50) );
- R( e, a, b, c, d, F3, K3, M(51) );
- R( d, e, a, b, c, F3, K3, M(52) );
- R( c, d, e, a, b, F3, K3, M(53) );
- R( b, c, d, e, a, F3, K3, M(54) );
- R( a, b, c, d, e, F3, K3, M(55) );
- R( e, a, b, c, d, F3, K3, M(56) );
- R( d, e, a, b, c, F3, K3, M(57) );
- R( c, d, e, a, b, F3, K3, M(58) );
- R( b, c, d, e, a, F3, K3, M(59) );
- R( a, b, c, d, e, F4, K4, M(60) );
- R( e, a, b, c, d, F4, K4, M(61) );
- R( d, e, a, b, c, F4, K4, M(62) );
- R( c, d, e, a, b, F4, K4, M(63) );
- R( b, c, d, e, a, F4, K4, M(64) );
- R( a, b, c, d, e, F4, K4, M(65) );
- R( e, a, b, c, d, F4, K4, M(66) );
- R( d, e, a, b, c, F4, K4, M(67) );
- R( c, d, e, a, b, F4, K4, M(68) );
- R( b, c, d, e, a, F4, K4, M(69) );
- R( a, b, c, d, e, F4, K4, M(70) );
- R( e, a, b, c, d, F4, K4, M(71) );
- R( d, e, a, b, c, F4, K4, M(72) );
- R( c, d, e, a, b, F4, K4, M(73) );
- R( b, c, d, e, a, F4, K4, M(74) );
- R( a, b, c, d, e, F4, K4, M(75) );
- R( e, a, b, c, d, F4, K4, M(76) );
- R( d, e, a, b, c, F4, K4, M(77) );
- R( c, d, e, a, b, F4, K4, M(78) );
- R( b, c, d, e, a, F4, K4, M(79) );
-
- a = ctx->A += a;
- b = ctx->B += b;
- c = ctx->C += c;
- d = ctx->D += d;
- e = ctx->E += e;
- }
-}
+#include "fsha1.h"
/* Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All
rights reserved.
@@ -393,11 +52,11 @@ char* _pacman_SHAFile(char *filename) {
if((file = fopen(filename, "rb")) == NULL) {
fprintf(stderr, _("%s can't be opened\n"), filename);
} else {
- sha_init_ctx(&context);
+ f_sha1_init (&context);
while((len = fread(buffer, 1, 1024, file))) {
- sha_process_bytes(buffer, len, &context);
+ f_sha1_update (&context, buffer, len);
}
- sha_finish_ctx(&context, digest);
+ f_sha1_fini (&context, digest);
fclose(file);
#ifdef DEBUG
SHAPrint(digest);
diff --git a/lib/libpacman/sha1.h b/lib/libpacman/sha1.h
index 725c4a2..2ba2c6c 100644
--- a/lib/libpacman/sha1.h
+++ b/lib/libpacman/sha1.h
@@ -16,45 +16,5 @@
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-#include <stdio.h>
-#include <limits.h>
-
-#define rol(x,n) ( ((x) << (n)) | ((x) >> (32 -(n))) )
-/* The code below is from md5.h (from coreutils), little modifications */
-#define UINT_MAX_32_BITS 4294967295U
-
-#if UINT_MAX == UINT_MAX_32_BITS
- typedef unsigned int sha_uint32;
-#else
-#if USHRT_MAX == UINT_MAX_32_BITS
- typedef unsigned short sha_uint32;
-#else
-#if ULONG_MAX == UINT_MAX_32_BITS
- typedef unsigned long sha_uint32;
-#else
- /* The following line is intended to evoke an error. Using #error is not
portable enough. */
-#error "Cannot determine unsigned 32-bit data type"
-#endif
-#endif
-#endif
-/* We have to make a guess about the integer type equivalent in size
- to pointers which should always be correct. */
-typedef unsigned long int sha_uintptr;
-
-/* Structure to save state of computation between the single steps. */
-struct sha_ctx
-{
- sha_uint32 A;
- sha_uint32 B;
- sha_uint32 C;
- sha_uint32 D;
- sha_uint32 E;
-
- sha_uint32 total[2];
- sha_uint32 buflen;
- char buffer[128];
-};
-
-
/* Needed for pacman-g2 */
char *_pacman_SHAFile (char *);
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