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-rw-r--r--lib/libalpm/sha1.c431
1 files changed, 0 insertions, 431 deletions
diff --git a/lib/libalpm/sha1.c b/lib/libalpm/sha1.c
deleted file mode 100644
index a164a893..00000000
--- a/lib/libalpm/sha1.c
+++ /dev/null
@@ -1,431 +0,0 @@
-/* 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 <robert@ilse.nl> -- Expansion function fix
-*/
-
-#include "config.h"
-
-#include <sys/types.h>
-#include <stdlib.h>
-#include <string.h>
-
-/* libalpm */
-#include "sha1.h"
-#include "alpm.h"
-#include "log.h"
-#include "util.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 !_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;
- }
-}
-
-/* Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All
-rights reserved.
-
-RSA Data Security, Inc. makes no representations concerning either
-the merchantability of this software or the suitability of this
-software for any particular purpose. It is provided "as is"
-without express or implied warranty of any kind.
-
-These notices must be retained in any copies of any part of this
-documentation and/or software.
- */
-
-/** Get the sha1 sum of file.
- * @param name name of the file
- * @return the checksum on success, NULL on error
- * @addtogroup alpm_misc
- */
-char SYMEXPORT *alpm_get_sha1sum(char *name)
-{
- ALPM_LOG_FUNC;
-
- ASSERT(name != NULL, return(NULL));
-
- return(_alpm_SHAFile(name));
-}
-
-char* _alpm_SHAFile(char *filename) {
- FILE *file;
- struct sha_ctx context;
- int len, i;
- char hex[3];
- unsigned char buffer[1024], digest[20];
- char *ret;
-
- ALPM_LOG_FUNC;
-
- if((file = fopen(filename, "rb")) == NULL) {
- _alpm_log(PM_LOG_ERROR, _("sha1: %s can't be opened\n"), filename);
- } else {
- sha_init_ctx(&context);
- while((len = fread(buffer, 1, 1024, file))) {
- sha_process_bytes(buffer, len, &context);
- }
- sha_finish_ctx(&context, digest);
- fclose(file);
-
- ret = (char*)malloc(41);
- ret[0] = '\0';
- for(i = 0; i < 20; i++) {
- snprintf(hex, 3, "%02x", digest[i]);
- strncat(ret, hex, 2);
- }
- _alpm_log(PM_LOG_DEBUG, "sha1(%s) = %s", filename, ret);
- return(ret);
- }
-
- return(NULL);
-}
-
-/* vim: set ts=2 sw=2 noet: */

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