From 213a68eb68ece93a8915ef18a8eba920d5a924a4 Mon Sep 17 00:00:00 2001 From: Hans Wennborg Date: Mon, 12 Sep 2011 10:21:10 +0100 Subject: Sync with upstream @23860137. Fix GCC -Wshadow warnings in LevelDB's public header files, reported by Dustin. Add in-memory Env implementation (helpers/memenv/*). This enables users to create LevelDB databases in-memory. Initialize ShardedLRUCache::last_id_ to zero. This fixes a Valgrind warning. (Also delete port/sha1_* which were removed upstream some time ago.) --- port/sha1_portable.cc | 298 -------------------------------------------------- port/sha1_portable.h | 25 ----- port/sha1_test.cc | 39 ------- 3 files changed, 362 deletions(-) delete mode 100644 port/sha1_portable.cc delete mode 100644 port/sha1_portable.h delete mode 100644 port/sha1_test.cc (limited to 'port') diff --git a/port/sha1_portable.cc b/port/sha1_portable.cc deleted file mode 100644 index 8fa7277..0000000 --- a/port/sha1_portable.cc +++ /dev/null @@ -1,298 +0,0 @@ -// Portions copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. -// -// This module provides a slow but portable implementation of -// the SHA1 hash function. -// -// It is adapted from free code written by Paul E. Jones -// . See http://www.packetizer.com/security/sha1/ -// -// The license for the original code is: -/* - Copyright (C) 1998, 2009 - Paul E. Jones - - Freeware Public License (FPL) - - This software is licensed as "freeware." Permission to distribute - this software in source and binary forms, including incorporation - into other products, is hereby granted without a fee. THIS SOFTWARE - IS PROVIDED 'AS IS' AND WITHOUT ANY EXPRESSED OR IMPLIED WARRANTIES, - INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHOR SHALL NOT BE HELD - LIABLE FOR ANY DAMAGES RESULTING FROM THE USE OF THIS SOFTWARE, EITHER - DIRECTLY OR INDIRECTLY, INCLUDING, BUT NOT LIMITED TO, LOSS OF DATA - OR DATA BEING RENDERED INACCURATE. -*/ - -#include "port/sha1_portable.h" -#include -#include -#include - -namespace leveldb { -namespace port { - -/* - * Description: - * This class implements the Secure Hashing Standard as defined - * in FIPS PUB 180-1 published April 17, 1995. - */ - -/* - * This structure will hold context information for the hashing - * operation - */ -typedef struct SHA1Context { - unsigned Message_Digest[5]; /* Message Digest (output) */ - - unsigned Length_Low; /* Message length in bits */ - unsigned Length_High; /* Message length in bits */ - - unsigned char Message_Block[64]; /* 512-bit message blocks */ - int Message_Block_Index; /* Index into message block array */ - - bool Computed; /* Is the digest computed? */ - bool Corrupted; /* Is the message digest corruped? */ -} SHA1Context; - -/* - * Portability Issues: - * SHA-1 is defined in terms of 32-bit "words". This code was - * written with the expectation that the processor has at least - * a 32-bit machine word size. If the machine word size is larger, - * the code should still function properly. One caveat to that - * is that the input functions taking characters and character - * arrays assume that only 8 bits of information are stored in each - * character. - */ - -/* - * Define the circular shift macro - */ -#define SHA1CircularShift(bits,word) \ - ((((word) << (bits)) & 0xFFFFFFFF) | \ - ((word) >> (32-(bits)))) - -/* Function prototypes */ -static void SHA1ProcessMessageBlock(SHA1Context *); -static void SHA1PadMessage(SHA1Context *); - -// Initialize the SHA1Context in preparation for computing a new -// message digest. -static void SHA1Reset(SHA1Context* context) { - context->Length_Low = 0; - context->Length_High = 0; - context->Message_Block_Index = 0; - - context->Message_Digest[0] = 0x67452301; - context->Message_Digest[1] = 0xEFCDAB89; - context->Message_Digest[2] = 0x98BADCFE; - context->Message_Digest[3] = 0x10325476; - context->Message_Digest[4] = 0xC3D2E1F0; - - context->Computed = false; - context->Corrupted = false; -} - -// This function will return the 160-bit message digest into the -// Message_Digest array within the SHA1Context provided -static bool SHA1Result(SHA1Context *context) { - if (context->Corrupted) { - return false; - } - - if (!context->Computed) { - SHA1PadMessage(context); - context->Computed = true; - } - return true; -} - -// This function accepts an array of bytes as the next portion of -// the message. -static void SHA1Input(SHA1Context *context, - const unsigned char *message_array, - unsigned length) { - if (!length) return; - - if (context->Computed || context->Corrupted) { - context->Corrupted = true; - return; - } - - while(length-- && !context->Corrupted) { - context->Message_Block[context->Message_Block_Index++] = - (*message_array & 0xFF); - - context->Length_Low += 8; - /* Force it to 32 bits */ - context->Length_Low &= 0xFFFFFFFF; - if (context->Length_Low == 0) { - context->Length_High++; - /* Force it to 32 bits */ - context->Length_High &= 0xFFFFFFFF; - if (context->Length_High == 0) - { - /* Message is too long */ - context->Corrupted = true; - } - } - - if (context->Message_Block_Index == 64) - { - SHA1ProcessMessageBlock(context); - } - - message_array++; - } -} - -// This function will process the next 512 bits of the message stored -// in the Message_Block array. -static void SHA1ProcessMessageBlock(SHA1Context *context) { - const unsigned K[] = // Constants defined in SHA-1 - { - 0x5A827999, - 0x6ED9EBA1, - 0x8F1BBCDC, - 0xCA62C1D6 - }; - int t; // Loop counter - unsigned temp; // Temporary word value - unsigned W[80]; // Word sequence - unsigned A, B, C, D, E; // Word buffers - - // Initialize the first 16 words in the array W - for(t = 0; t < 16; t++) { - W[t] = ((unsigned) context->Message_Block[t * 4]) << 24; - W[t] |= ((unsigned) context->Message_Block[t * 4 + 1]) << 16; - W[t] |= ((unsigned) context->Message_Block[t * 4 + 2]) << 8; - W[t] |= ((unsigned) context->Message_Block[t * 4 + 3]); - } - - for(t = 16; t < 80; t++) { - W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]); - } - - A = context->Message_Digest[0]; - B = context->Message_Digest[1]; - C = context->Message_Digest[2]; - D = context->Message_Digest[3]; - E = context->Message_Digest[4]; - - for(t = 0; t < 20; t++) { - temp = SHA1CircularShift(5,A) + - ((B & C) | ((~B) & D)) + E + W[t] + K[0]; - temp &= 0xFFFFFFFF; - E = D; - D = C; - C = SHA1CircularShift(30,B); - B = A; - A = temp; - } - - for(t = 20; t < 40; t++) { - temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1]; - temp &= 0xFFFFFFFF; - E = D; - D = C; - C = SHA1CircularShift(30,B); - B = A; - A = temp; - } - - for(t = 40; t < 60; t++) { - temp = SHA1CircularShift(5,A) + - ((B & C) | (B & D) | (C & D)) + E + W[t] + K[2]; - temp &= 0xFFFFFFFF; - E = D; - D = C; - C = SHA1CircularShift(30,B); - B = A; - A = temp; - } - - for(t = 60; t < 80; t++) { - temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3]; - temp &= 0xFFFFFFFF; - E = D; - D = C; - C = SHA1CircularShift(30,B); - B = A; - A = temp; - } - - context->Message_Digest[0] = (context->Message_Digest[0] + A) & 0xFFFFFFFF; - context->Message_Digest[1] = (context->Message_Digest[1] + B) & 0xFFFFFFFF; - context->Message_Digest[2] = (context->Message_Digest[2] + C) & 0xFFFFFFFF; - context->Message_Digest[3] = (context->Message_Digest[3] + D) & 0xFFFFFFFF; - context->Message_Digest[4] = (context->Message_Digest[4] + E) & 0xFFFFFFFF; - - context->Message_Block_Index = 0; -} - -// According to the standard, the message must be padded to an even -// 512 bits. The first padding bit must be a '1'. The last 64 bits -// represent the length of the original message. All bits in between -// should be 0. This function will pad the message according to those -// rules by filling the Message_Block array accordingly. It will also -// call SHA1ProcessMessageBlock() appropriately. When it returns, it -// can be assumed that the message digest has been computed. -static void SHA1PadMessage(SHA1Context *context) { - // Check to see if the current message block is too small to hold - // the initial padding bits and length. If so, we will pad the - // block, process it, and then continue padding into a second block. - if (context->Message_Block_Index > 55) { - context->Message_Block[context->Message_Block_Index++] = 0x80; - while(context->Message_Block_Index < 64) { - context->Message_Block[context->Message_Block_Index++] = 0; - } - - SHA1ProcessMessageBlock(context); - - while(context->Message_Block_Index < 56) { - context->Message_Block[context->Message_Block_Index++] = 0; - } - } else { - context->Message_Block[context->Message_Block_Index++] = 0x80; - while(context->Message_Block_Index < 56) { - context->Message_Block[context->Message_Block_Index++] = 0; - } - } - - // Store the message length as the last 8 octets - context->Message_Block[56] = (context->Length_High >> 24) & 0xFF; - context->Message_Block[57] = (context->Length_High >> 16) & 0xFF; - context->Message_Block[58] = (context->Length_High >> 8) & 0xFF; - context->Message_Block[59] = (context->Length_High) & 0xFF; - context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF; - context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF; - context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF; - context->Message_Block[63] = (context->Length_Low) & 0xFF; - - SHA1ProcessMessageBlock(context); -} - - -void SHA1_Hash_Portable(const char* data, size_t len, char* hash_array) { - SHA1Context context; - SHA1Reset(&context); - SHA1Input(&context, reinterpret_cast(data), len); - bool ok = SHA1Result(&context); - if (!ok) { - fprintf(stderr, "Unexpected error in SHA1_Hash_Portable code\n"); - exit(1); - } - for (int i = 0; i < 5; i++) { - uint32_t value = context.Message_Digest[i]; - hash_array[i*4 + 0] = (value >> 24) & 0xff; - hash_array[i*4 + 1] = (value >> 16) & 0xff; - hash_array[i*4 + 2] = (value >> 8) & 0xff; - hash_array[i*4 + 3] = value & 0xff; - } -} - -} -} diff --git a/port/sha1_portable.h b/port/sha1_portable.h deleted file mode 100644 index 31db305..0000000 --- a/port/sha1_portable.h +++ /dev/null @@ -1,25 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#ifndef STORAGE_LEVELDB_PORT_SHA1_PORTABLE_H_ -#define STORAGE_LEVELDB_PORT_SHA1_PORTABLE_H_ - -#include - -namespace leveldb { -namespace port { - -// Compute the SHA1 hash value of "data[0..len-1]" and store it in -// "hash_array[0..19]". hash_array must have 20 bytes of space available. -// -// This function is portable but may not be as fast as a version -// optimized for your platform. It is provided as a default method -// that can be used when porting leveldb to a new platform if no -// better SHA1 hash implementation is available. -void SHA1_Hash_Portable(const char* data, size_t len, char* hash_array); - -} -} - -#endif // STORAGE_LEVELDB_PORT_SHA1_PORTABLE_H_ diff --git a/port/sha1_test.cc b/port/sha1_test.cc deleted file mode 100644 index b182e67..0000000 --- a/port/sha1_test.cc +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright (c) 2011 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "port/port.h" -#include "util/testharness.h" - -namespace leveldb { -namespace port { - -class SHA1 { }; - -static std::string TestSHA1(const char* data, size_t len) { - char hash_val[20]; - SHA1_Hash(data, len, hash_val); - char buf[41]; - for (int i = 0; i < 20; i++) { - snprintf(buf + i * 2, 41 - i * 2, - "%02x", - static_cast(static_cast( - hash_val[i]))); - } - return std::string(buf, 40); -} - -TEST(SHA1, Simple) { - ASSERT_EQ("da39a3ee5e6b4b0d3255bfef95601890afd80709", TestSHA1("", 0)); - ASSERT_EQ("aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d", TestSHA1("hello", 5)); - std::string x(10000, 'x'); - ASSERT_EQ("f8c5cde791c5056cf515881e701c8a9ecb439a75", - TestSHA1(x.data(), x.size())); -} - -} -} - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} -- cgit v1.2.1