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BlockChain.cpp
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BlockChain.cpp
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#include "BlockChain.h"
#include "Base58.h"
#include "BitcoinAddress.h"
#include "HeapSort.h"
#include "RIPEMD160.h"
#include "SHA256.h"
#include "SimpleHash.h"
//
// Written by John W. Ratcliff : mailto: [email protected]
//
// Website: http://codesuppository.blogspot.com/
//
// Source contained in this project includes portions of source code from other open source projects; though that source may have
// been modified to be included here. Original notices are left in where appropriate.
//
// Some of the hash and bignumber implementations are based on source code find in the 'cbitcoin' project; though it has been modified here to remove all memory allocations.
//
// http://cbitcoin.com/
//
// If you find this code snippet useful; you can tip me at this bitcoin address:
//
// BITCOIN TIP JAR: "1NY8SuaXfh8h5WHd4QnYwpgL1mNu9hHVBT"
//
#ifdef _MSC_VER // Disable the stupid ass absurd warning messages from Visual Studio telling you that using stdlib and stdio is 'not valid ANSI C'
#pragma warning(disable:4996)
#pragma warning(disable:4718)
#endif
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include <time.h>
#include <stdarg.h>
// Note, to minimize dynamic memory allocation this parser pre-allocates memory for the maximum ever expected number
// of bitcoin addresses, transactions, inputs, outputs, and blocks.
// The numbers here are large enough to read the entire blockchain as of January 1, 2014 with a fair amount of room to grow.
// However, they will need to be increased over time as the blockchain grows.
// Dynamic memory allocation isn't free, every time you dynamically allocate memory there is a significant overhead; so by pre-allocating
// all of the memory needed into one contiguous block you actually save an enormous amount of memory overall and also make the code run
// orders of magnitude faster.
#define SMALL_MEMORY_PROFILE 0 // a debug option so I can run/test the code on a small memory configuration machine If this is
static uint32_t ZOMBIE_DAYS=365*3;
#if SMALL_MEMORY_PROFILE
// Enough memory to process the first 200,000 blocks, useful for testing.
#define MAX_BITCOIN_ADDRESSES 14000000 //
#define MAX_TOTAL_TRANSACTIONS 14000000 //
#define MAX_TOTAL_INPUTS 45000000 //
#define MAX_TOTAL_OUTPUTS 45000000 //
#define MAX_TOTAL_BLOCKS 300000 //
#else
#define MAX_BITCOIN_ADDRESSES 70000000 // 60 million unique addresses.
#define MAX_TOTAL_TRANSACTIONS 90000000 // 90 million transactions.
#define MAX_TOTAL_INPUTS 350000000 // 260 million inputs.
#define MAX_TOTAL_OUTPUTS 350000000 // 260 million outputs
#define MAX_TOTAL_BLOCKS 600000 // 600,000 blocks.
#endif
#define MAX_PLOT_COUNT 2000000
// Some globals for error reporting.
static uint32_t gBlockTime=0;
static uint32_t gBlockIndex=0;
static uint32_t gTransactionIndex=0;
//static uint8_t gTransactionHash[256];
static uint32_t gOutputIndex=0;
static bool gIsWarning=false;
static FILE *gWeirdSignatureFile=NULL;
static FILE *gAsciiSignatureFile=NULL;
static FILE *gLogFile=NULL;
static bool gReportTransactionHash=false;
static bool gDumpBlock=false;
static const char *gDummyKeyAscii = "1BadkEyPaj5oW2Uw4nY5BkYbPRYyTyqs9A";
static uint8_t gDummyKey[25];
static const char *gZeroByteAscii = "1zeroBTYRExUcufrTkwg27LsAvrhehtCJ";
static uint8_t gZeroByte[25];
static bool inline isASCII(char c)
{
bool ret = false;
if ( (c >= 32 && c < 127) || c == 13 )
{
ret = true;
}
return ret;
}
static const char *getDateString(time_t t)
{
static char scratch[1024];
struct tm *gtm = gmtime(&t);
// strftime(scratch, 1024, "%m, %d, %Y", gtm);
sprintf(scratch,"%4d-%02d-%02d", gtm->tm_year+1900, gtm->tm_mon+1, gtm->tm_mday );
return scratch;
}
static void logMessage(const char *fmt,...)
{
char wbuff[2048];
va_list arg;
va_start( arg, fmt );
vsprintf(wbuff,fmt, arg);
va_end(arg);
printf("%s",wbuff);
if ( gLogFile == NULL )
{
gLogFile = fopen("blockchain.txt", "wb");
}
if ( gLogFile )
{
fprintf(gLogFile,"%s", wbuff );
fflush(gLogFile);
}
}
class Hash256
{
public:
Hash256(void)
{
mWord0 = 0;
mWord1 = 0;
mWord2 = 0;
mWord3 = 0;
}
Hash256(const Hash256 &h)
{
mWord0 = h.mWord0;
mWord1 = h.mWord1;
mWord2 = h.mWord2;
mWord3 = h.mWord3;
}
inline Hash256(const uint8_t *src)
{
mWord0 = *(const uint64_t *)(src);
mWord1 = *(const uint64_t *)(src+8);
mWord2 = *(const uint64_t *)(src+16);
mWord3 = *(const uint64_t *)(src+24);
}
inline uint32_t getHash(void) const
{
const uint32_t *h = (const uint32_t *)&mWord0;
return h[0] ^ h[1] ^ h[2] ^ h[3] ^ h[4] ^ h[5] ^ h[6] ^ h[7];
}
inline bool operator==(const Hash256 &h) const
{
return mWord0 == h.mWord0 && mWord1 == h.mWord1 && mWord2 == h.mWord2 && mWord3 == h.mWord3;
}
uint64_t mWord0;
uint64_t mWord1;
uint64_t mWord2;
uint64_t mWord3;
};
static void printReverseHash(const uint8_t *hash)
{
if ( hash )
{
for (uint32_t i=0; i<32; i++)
{
logMessage("%02x", hash[31-i] );
}
}
else
{
logMessage("NULL HASH");
}
}
static void fprintReverseHash(FILE *fph,const uint8_t *hash)
{
if ( hash )
{
for (uint32_t i=0; i<32; i++)
{
fprintf(fph,"%02x", hash[31-i] );
}
}
else
{
fprintf(fph,"NULL HASH");
}
}
class BlockHeader : public Hash256
{
public:
BlockHeader(void)
{
mFileIndex = 0;
mFileOffset = 0;
mBlockLength = 0;
}
BlockHeader(const Hash256 &h) : Hash256(h)
{
mFileIndex = 0;
mFileOffset = 0;
mBlockLength = 0;
}
uint32_t mFileIndex;
uint32_t mFileOffset;
uint32_t mBlockLength;
uint8_t mPreviousBlockHash[32];
};
struct BlockPrefix
{
uint32_t mVersion; // The block version number.
uint8_t mPreviousBlock[32]; // The 32 byte (256 bit) hash of the previous block in the blockchain
uint8_t mMerkleRoot[32]; // The 32 bye merkle root hash
uint32_t mTimeStamp; // The block time stamp
uint32_t mBits; // The block bits field.
uint32_t mNonce; // The block random number 'nonce' field.
};
static const char *getTimeString(uint32_t timeStamp)
{
if ( timeStamp == 0 )
{
return "NEVER";
}
static char scratch[1024];
time_t t(timeStamp);
struct tm *gtm = gmtime(&t);
strftime(scratch, 1024, "%m/%d/%Y %H:%M:%S", gtm);
return scratch;
}
#define MAXNUMERIC 32 // JWR support up to 16 32 character long numeric formated strings
#define MAXFNUM 16
static char gFormat[MAXNUMERIC*MAXFNUM];
static int32_t gIndex=0;
static const char * formatNumber(int32_t number) // JWR format this integer into a fancy comma delimited string
{
char * dest = &gFormat[gIndex*MAXNUMERIC];
gIndex++;
if ( gIndex == MAXFNUM ) gIndex = 0;
char scratch[512];
#ifdef _MSC_VER
itoa(number,scratch,10);
#else
snprintf(scratch, 10, "%d", number);
#endif
char *source = scratch;
char *str = dest;
uint32_t len = (uint32_t)strlen(scratch);
if ( scratch[0] == '-' )
{
*str++ = '-';
source++;
len--;
}
for (uint32_t i=0; i<len; i++)
{
int32_t place = (len-1)-i;
*str++ = source[i];
if ( place && (place%3) == 0 ) *str++ = ',';
}
*str = 0;
return dest;
}
class FileLocation : public Hash256
{
public:
FileLocation(void)
{
}
FileLocation(const Hash256 &h,uint32_t fileIndex,uint32_t fileOffset,uint32_t fileLength,uint32_t transactionIndex) : Hash256(h)
{
mFileIndex = fileIndex;
mFileOffset = fileOffset;
mFileLength = fileLength;
mTransactionIndex = transactionIndex;
}
uint32_t mFileIndex;
uint32_t mFileOffset;
uint32_t mFileLength;
uint32_t mTransactionIndex;
};
typedef SimpleHash< FileLocation, 4194304, MAX_TOTAL_TRANSACTIONS > TransactionHashMap;
typedef SimpleHash< BlockHeader, 4194304, MAX_TOTAL_BLOCKS > BlockHeaderMap;
enum ScriptOpcodes
{
OP_0 = 0x00,
OP_PUSHDATA1 = 0x4c,
OP_PUSHDATA2 = 0x4d,
OP_PUSHDATA4 = 0x4e,
OP_1NEGATE = 0x4f,
OP_RESERVED = 0x50,
OP_1 = 0x51,
OP_2 = 0x52,
OP_3 = 0x53,
OP_4 = 0x54,
OP_5 = 0x55,
OP_6 = 0x56,
OP_7 = 0x57,
OP_8 = 0x58,
OP_9 = 0x59,
OP_10 = 0x5a,
OP_11 = 0x5b,
OP_12 = 0x5c,
OP_13 = 0x5d,
OP_14 = 0x5e,
OP_15 = 0x5f,
OP_16 = 0x60,
OP_NOP = 0x61,
OP_VER = 0x62,
OP_IF = 0x63,
OP_NOTIF = 0x64,
OP_VERIF = 0x65,
OP_VERNOTIF = 0x66,
OP_ELSE = 0x67,
OP_ENDIF = 0x68,
OP_VERIFY = 0x69,
OP_RETURN = 0x6a,
OP_TOALTSTACK = 0x6b,
OP_FROMALTSTACK = 0x6c,
OP_2DROP = 0x6d,
OP_2DUP = 0x6e,
OP_3DUP = 0x6f,
OP_2OVER = 0x70,
OP_2ROT = 0x71,
OP_2SWAP = 0x72,
OP_IFDUP = 0x73,
OP_DEPTH = 0x74,
OP_DROP = 0x75,
OP_DUP = 0x76,
OP_NIP = 0x77,
OP_OVER = 0x78,
OP_PICK = 0x79,
OP_ROLL = 0x7a,
OP_ROT = 0x7b,
OP_SWAP = 0x7c,
OP_TUCK = 0x7d,
OP_CAT = 0x7e, // Currently disabled
OP_SUBSTR = 0x7f, // Currently disabled
OP_LEFT = 0x80, // Currently disabled
OP_RIGHT = 0x81, // Currently disabled
OP_SIZE = 0x82, // Currently disabled
OP_INVERT = 0x83, // Currently disabled
OP_AND = 0x84, // Currently disabled
OP_OR = 0x85, // Currently disabled
OP_XOR = 0x86, // Currently disabled
OP_EQUAL = 0x87,
OP_EQUALVERIFY = 0x88,
OP_RESERVED1 = 0x89,
OP_RESERVED2 = 0x8a,
OP_1ADD = 0x8b,
OP_1SUB = 0x8c,
OP_2MUL = 0x8d, // Currently disabled
OP_2DIV = 0x8e, // Currently disabled
OP_NEGATE = 0x8f,
OP_ABS = 0x90,
OP_NOT = 0x91,
OP_0NOTEQUAL = 0x92,
OP_ADD = 0x93,
OP_SUB = 0x94,
OP_MUL = 0x95, // Currently disabled
OP_DIV = 0x96, // Currently disabled
OP_MOD = 0x97, // Currently disabled
OP_LSHIFT = 0x98, // Currently disabled
OP_RSHIFT = 0x99, // Currently disabled
OP_BOOLAND = 0x9a,
OP_BOOLOR = 0x9b,
OP_NUMEQUAL = 0x9c,
OP_NUMEQUALVERIFY = 0x9d,
OP_NUMNOTEQUAL = 0x9e,
OP_LESSTHAN = 0x9f,
OP_GREATERTHAN = 0xa0,
OP_LESSTHANOREQUAL = 0xa1,
OP_GREATERTHANOREQUAL = 0xa2,
OP_MIN = 0xa3,
OP_MAX = 0xa4,
OP_WITHIN = 0xa5,
OP_RIPEMD160 = 0xa6,
OP_SHA1 = 0xa7,
OP_SHA256 = 0xa8,
OP_HASH160 = 0xa9,
OP_HASH256 = 0xaa,
OP_CODESEPARATOR = 0xab,
OP_CHECKSIG = 0xac,
OP_CHECKSIGVERIFY = 0xad,
OP_CHECKMULTISIG = 0xae,
OP_CHECKMULTISIGVERIFY = 0xaf,
OP_NOP1 = 0xb0,
OP_NOP2 = 0xb1,
OP_NOP3 = 0xb2,
OP_NOP4 = 0xb3,
OP_NOP5 = 0xb4,
OP_NOP6 = 0xb5,
OP_NOP7 = 0xb6,
OP_NOP8 = 0xb7,
OP_NOP9 = 0xb8,
OP_NOP10 = 0xb9,
OP_SMALLINTEGER = 0xfa,
OP_PUBKEYS = 0xfb,
OP_PUBKEYHASH = 0xfd,
OP_PUBKEY = 0xfe,
OP_INVALIDOPCODE = 0xff
};
#define MAGIC_ID 0xD9B4BEF9
#define ONE_BTC 100000000
#define ONE_MBTC (ONE_BTC/1000)
#define MAX_BLOCK_FILES 512 // As of July 6, 2013 there are only about 70 .dat files; so it will be a long time before this overflows
// These defines set the limits this parser expects to ever encounter on the blockchain data stream.
// In a debug build there are asserts to make sure these limits are never exceeded.
// These limits work for the blockchain current as of July 1, 2013.
// The limits can be revised when and if necessary.
#define MAX_BLOCK_SIZE (1024*1024)*10 // never expect to have a block larger than 10mb
#define MAX_BLOCK_TRANSACTION 8192 // never expect more than 8192 transactions per block.
#define MAX_BLOCK_INPUTS 32768 // never expect more than 8192 total inputs
#define MAX_BLOCK_OUTPUTS 32768 // never expect more than 8192 total outputs
#define MAX_REASONABLE_SCRIPT_LENGTH (1024*32) // would never expect any script to be more than 16k in size; that would be very unusual!
#define MAX_REASONABLE_INPUTS 8192 // really can't imagine any transaction ever having more than 8192 inputs
#define MAX_REASONABLE_OUTPUTS 8192 // really can't imagine any transaction ever having more than 8192 outputs
class SignatureStat
{
public:
SignatureStat(void)
{
mFlags = 0;
mCount = 0;
mValue = 0;
}
uint32_t mFlags;
uint32_t mCount;
uint64_t mValue;
};
#define MAX_SIGNATURE_STAT 256
static uint32_t gSignatureStatCount=0;
static SignatureStat gSignatureStats[MAX_SIGNATURE_STAT];
//********************************************
//********************************************
#define MAX_TRANSACTION_STAT 30000000
class TransactionBlockStat
{
public:
TransactionBlockStat(void)
{
mValues = NULL;
init();
}
~TransactionBlockStat(void)
{
delete []mValues;
}
void init(void)
{
mBlockCount = 0;
mBlockSize = 0;
mTransactionCount = 0;
mTransactionSize = 0;
mInputCount = 0;
mOutputCount = 0;
mCoinBaseValue = 0;
mInputValue = 0;
mOutputValue = 0;
mFeeValue = 0;
mDustCount = 0;
}
uint32_t mBlockCount;
uint32_t mBlockSize;
uint32_t mTransactionCount;
uint32_t mTransactionSize;
uint32_t mInputCount;
uint32_t mOutputCount;
uint64_t mCoinBaseValue;
uint64_t mInputValue;
uint64_t mOutputValue;
uint64_t mFeeValue;
uint64_t *mValues;
uint32_t mDustCount;
};
class BlockImpl : public BlockChain::Block
{
public:
// Read one byte from the block-chain input stream.
inline uint8_t readU8(void)
{
assert( (mBlockRead+sizeof(uint8_t)) <= mBlockEnd );
uint8_t ret = *(uint8_t *)mBlockRead;
mBlockRead+=sizeof(uint8_t);
return ret;
}
// Read two bytes from the block-chain input stream.
inline uint16_t readU16(void)
{
assert( (mBlockRead+sizeof(uint16_t)) <= mBlockEnd );
uint16_t ret = *(uint16_t *)mBlockRead;
mBlockRead+=sizeof(uint16_t);
return ret;
}
// Read four bytes from the block-chain input stream.
inline uint32_t readU32(void)
{
assert( (mBlockRead+sizeof(uint32_t)) <= mBlockEnd );
uint32_t ret = *(uint32_t *)mBlockRead;
mBlockRead+=sizeof(uint32_t);
return ret;
}
// Read eight bytes from the block-chain input stream.
inline uint64_t readU64(void)
{
assert( (mBlockRead+sizeof(uint64_t)) <= mBlockEnd );
uint64_t ret = *(uint64_t *)mBlockRead;
mBlockRead+=sizeof(uint64_t);
return ret;
}
// Return the current stream pointer representing a 32byte hash and advance the read pointer accordingly
inline const uint8_t *readHash(void)
{
const uint8_t *ret = mBlockRead;
assert( (mBlockRead+32) <= mBlockEnd );
mBlockRead+=32;
return ret;
}
// reads a variable length integer.
// See the documentation from here: https://en.bitcoin.it/wiki/Protocol_specification#Variable_length_integer
inline uint32_t readVariableLengthInteger(void)
{
uint32_t ret = 0;
uint8_t v = readU8();
if ( v < 0xFD ) // If it's less than 0xFD use this value as the unsigned integer
{
ret = (uint32_t)v;
}
else
{
uint16_t v = readU16();
if ( v < 0xFFFF )
{
ret = (uint32_t)v;
}
else
{
uint32_t v = readU32();
if ( v < 0xFFFFFFFF )
{
ret = (uint32_t)v;
}
else
{
assert(0); // never expect to actually encounter a 64bit integer in the block-chain stream; it's outside of any reasonable expected value
uint64_t v = readU64();
ret = (uint32_t)v;
}
}
}
return ret;
}
// Get the current read buffer address and advance the stream buffer by this length; used to get the address of input/output scripts
inline const uint8_t * getReadBufferAdvance(uint32_t readLength)
{
const uint8_t *ret = mBlockRead;
mBlockRead+=readLength;
assert( mBlockRead <= mBlockEnd );
return ret;
}
// Read a transaction input
bool readInput(BlockChain::BlockInput &input)
{
bool ret = true;
input.transactionHash = readHash(); // read the transaction hash
input.transactionIndex = readU32(); // read the transaction index
input.responseScriptLength = readVariableLengthInteger(); // read the length of the script
assert( input.responseScriptLength < MAX_REASONABLE_SCRIPT_LENGTH );
if ( input.responseScriptLength >= 8192 )
{
logMessage("Block: %d : Unreasonably large input script length of %d bytes.\r\n", gBlockIndex, input.responseScriptLength );
}
if ( input.responseScriptLength < MAX_REASONABLE_SCRIPT_LENGTH )
{
input.responseScript = input.responseScriptLength ? getReadBufferAdvance(input.responseScriptLength) : NULL; // get the script buffer pointer; and advance the read location
input.sequenceNumber = readU32();
}
else
{
logMessage("Block %d : Outrageous sized input script of %d bytes! Shutting down.\r\n", gBlockIndex, input.responseScriptLength );
exit(1);
}
return ret;
}
void getAsciiAddress(BlockChain::BlockOutput &o)
{
o.asciiAddress[0] = 0;
char temp[256];
switch ( o.keyType )
{
case BlockChain::KT_MULTISIG:
sprintf(o.asciiAddress,"MultiSig[%d]",o.signatureCount );
break;
case BlockChain::KT_STEALTH:
strcat(o.asciiAddress,"*STEALTH*");
break;
case BlockChain::KT_SCRIPT_HASH:
strcat(o.asciiAddress,"*SCRIPT_HASH*");
break;
default:
break;
}
for (uint32_t i=0; i<MAX_MULTISIG; i++)
{
if ( o.publicKey[i] )
{
if ( i )
{
strcat(o.asciiAddress,":");
}
bitcoinAddressToAscii(o.addresses[i].address,temp,256);
strcat(o.asciiAddress,temp);
}
else
{
break;
}
}
// If this is a multi-sig address, *then* we need to generate a multisig address for it.
if ( o.keyType == BlockChain::KT_MULTISIG )
{
uint8_t hash[20];
computeRIPEMD160(&o.addresses,25*MAX_MULTISIG,hash);
bitcoinRIPEMD160ToAddress(hash,o.multisig.address);
}
}
const char * getKeyType(BlockChain::KeyType k)
{
const char *ret = "UNKNOWN";
switch ( k )
{
case BlockChain::KT_RIPEMD160:
ret = "RIPEMD160";
break;
case BlockChain::KT_UNCOMPRESSED_PUBLIC_KEY:
ret = "UNCOMPRESSED_PUBLIC_KEY";
break;
case BlockChain::KT_COMPRESSED_PUBLIC_KEY:
ret = "COMPRESSED_PUBLIC_KEY";
break;
case BlockChain::KT_TRUNCATED_COMPRESSED_KEY:
ret = "TRUNCATED_COMPRESSED_KEY";
break;
case BlockChain::KT_MULTISIG:
ret = "MULTISIG";
break;
case BlockChain::KT_STEALTH:
ret = "STEALTH";
break;
case BlockChain::KT_ZERO_LENGTH:
ret = "ZERO_LENGTH";
break;
case BlockChain::KT_SCRIPT_HASH:
ret = "SCRIPT_HASH";
break;
default:
break;
}
return ret;
}
// Read an output block
bool readOutput(BlockChain::BlockOutput &output)
{
bool ret = true;
new ( &output ) BlockChain::BlockOutput;
output.value = readU64(); // Read the value of the transaction
blockReward+=output.value;
output.challengeScriptLength = readVariableLengthInteger();
assert ( output.challengeScriptLength < MAX_REASONABLE_SCRIPT_LENGTH );
if ( output.challengeScriptLength >= 8192 )
{
logMessage("Block %d : Unreasonably large output script length of %d bytes.\r\n", gBlockIndex, output.challengeScriptLength );
}
else if ( output.challengeScriptLength > MAX_REASONABLE_SCRIPT_LENGTH )
{
logMessage("Block %d : output script too long %d bytes!\r\n", gBlockIndex, output.challengeScriptLength );
exit(1);
}
output.challengeScript = output.challengeScriptLength ? getReadBufferAdvance(output.challengeScriptLength) : NULL; // get the script buffer pointer and advance the read location
if ( output.challengeScript )
{
uint8_t lastInstruction = output.challengeScript[output.challengeScriptLength-1];
if ( output.challengeScriptLength == 67 && output.challengeScript[0] == 65 && output.challengeScript[66]== OP_CHECKSIG )
{
output.publicKey[0] = output.challengeScript+1;
output.keyType = BlockChain::KT_UNCOMPRESSED_PUBLIC_KEY;
}
if ( output.challengeScriptLength == 40 && output.challengeScript[0] == OP_RETURN )
{
output.publicKey[0] = &output.challengeScript[1];
output.keyType = BlockChain::KT_STEALTH;
}
else if ( output.challengeScriptLength == 66 && output.challengeScript[65]== OP_CHECKSIG )
{
output.publicKey[0] = output.challengeScript;
output.keyType = BlockChain::KT_UNCOMPRESSED_PUBLIC_KEY;
}
else if ( output.challengeScriptLength == 35 && output.challengeScript[34] == OP_CHECKSIG )
{
output.publicKey[0] = &output.challengeScript[1];
output.keyType = BlockChain::KT_COMPRESSED_PUBLIC_KEY;
}
else if ( output.challengeScriptLength == 33 && output.challengeScript[0] == 0x20 )
{
output.publicKey[0] = &output.challengeScript[1];
output.keyType = BlockChain::KT_TRUNCATED_COMPRESSED_KEY;
}
else if ( output.challengeScriptLength == 23 &&
output.challengeScript[0] == OP_HASH160 &&
output.challengeScript[1] == 20 &&
output.challengeScript[22] == OP_EQUAL )
{
output.publicKey[0] = output.challengeScript+2;
output.keyType = BlockChain::KT_SCRIPT_HASH;
}
else if ( output.challengeScriptLength >= 25 &&
output.challengeScript[0] == OP_DUP &&
output.challengeScript[1] == OP_HASH160 &&
output.challengeScript[2] == 20 )
{
output.publicKey[0] = output.challengeScript+3;
output.keyType = BlockChain::KT_RIPEMD160;
}
else if ( output.challengeScriptLength == 5 &&
output.challengeScript[0] == OP_DUP &&
output.challengeScript[1] == OP_HASH160 &&
output.challengeScript[2] == OP_0 &&
output.challengeScript[3] == OP_EQUALVERIFY &&
output.challengeScript[4] == OP_CHECKSIG )
{
logMessage("WARNING: Unusual but expected output script. Block %s : Transaction: %s : OutputIndex: %s\r\n", formatNumber(gBlockIndex), formatNumber(gTransactionIndex), formatNumber(gOutputIndex) );
gIsWarning = true;
}
else if ( lastInstruction == OP_CHECKMULTISIG && output.challengeScriptLength > 25 ) // looks to be a multi-sig
{
const uint8_t *scanBegin = output.challengeScript;
const uint8_t *scanEnd = &output.challengeScript[output.challengeScriptLength-2];
bool expectedPrefix = false;
bool expectedPostfix = false;
switch ( *scanBegin )
{
case OP_0:
case OP_1:
case OP_2:
case OP_3:
case OP_4:
case OP_5:
expectedPrefix = true;
break;
default:
// assert(0); // unexpected
break;
}
switch ( *scanEnd )
{
case OP_1:
case OP_2:
case OP_3:
case OP_4:
case OP_5:
expectedPostfix = true;
break;
default:
// assert(0); // unexpected
break;
}
if ( expectedPrefix && expectedPostfix )
{
scanBegin++;
uint32_t keyIndex = 0;
while ( keyIndex < 5 && scanBegin < scanEnd )
{
if ( *scanBegin == 0x21 )
{
output.keyType = BlockChain::KT_MULTISIG;
scanBegin++;
output.publicKey[keyIndex] = scanBegin;
scanBegin+=0x21;
uint32_t bitMask = 1<<keyIndex;
output.multiSigFormat|=bitMask; // turn this bit on if it is in compressed format
keyIndex++;
}
else if ( *scanBegin == 0x41 )
{
output.keyType = BlockChain::KT_MULTISIG;
scanBegin++;
output.publicKey[keyIndex] = scanBegin;
scanBegin+=0x41;
keyIndex++;
}
else
{
break; //
}
}
}
if ( output.publicKey[0] == NULL )
{
logMessage("****MULTI_SIG WARNING: Unable to decipher multi-sig output. Block %s : Transaction: %s : OutputIndex: %s\r\n", formatNumber(gBlockIndex), formatNumber(gTransactionIndex), formatNumber(gOutputIndex) );
gIsWarning = true;
}
}
else
{
// Ok..we are going to scan for this pattern.. OP_DUP, OP_HASH160, 0x14 then exactly 20 bytes after 0x88,0xAC
// 25...
if ( output.challengeScriptLength > 25 )
{
uint32_t endIndex = output.challengeScriptLength-25;
for (uint32_t i=0; i<endIndex; i++)
{
const uint8_t *scan = &output.challengeScript[i];
if ( scan[0] == OP_DUP &&
scan[1] == OP_HASH160 &&
scan[2] == 20 &&
scan[23] == OP_EQUALVERIFY &&
scan[24] == OP_CHECKSIG )
{
output.publicKey[0] = &scan[3];
output.keyType = BlockChain::KT_RIPEMD160;
logMessage("WARNING: Unusual output script. Block %s : Transaction: %s : OutputIndex: %s\r\n", formatNumber(gBlockIndex), formatNumber(gTransactionIndex), formatNumber(gOutputIndex) );
gIsWarning = true;
break;
}
}
}
}
if ( output.publicKey[0] == NULL )
{
logMessage("==========================================\r\n");
logMessage("FAILED TO LOCATE PUBLIC KEY\r\n");
logMessage("ChallengeScriptLength: %d bytes long\r\n", output.challengeScriptLength );
for (uint32_t i=0; i<output.challengeScriptLength; i++)
{
logMessage("%02x ", output.challengeScript[i] );
if ( ((i+16)&15) == 0 )
{
logMessage("\r\n");
}
}
logMessage("\r\n");
logMessage("==========================================\r\n");
logMessage("\r\n");
}
}
else
{
logMessage("Block %d : has a zero byte length output script?\r\n", gBlockIndex);
gReportTransactionHash = true;
}
if ( !output.publicKey[0] )
{
if ( output.challengeScriptLength == 0 )
{
output.publicKey[0] = &gZeroByte[1];
}
else
{
output.publicKey[0] = &gDummyKey[1];
}
output.keyType = BlockChain::KT_RIPEMD160;
logMessage("WARNING: Failed to decode public key in output script. Block %s : Transaction: %s : OutputIndex: %s scriptLength: %s\r\n", formatNumber(gBlockIndex), formatNumber(gTransactionIndex), formatNumber(gOutputIndex), formatNumber(output.challengeScriptLength) );
gReportTransactionHash = true;
gIsWarning = true;
}
switch ( output.keyType )
{
case BlockChain::KT_RIPEMD160:
bitcoinRIPEMD160ToAddress(output.publicKey[0],output.addresses[0].address);
break;
case BlockChain::KT_SCRIPT_HASH:
bitcoinRIPEMD160ToScriptAddress(output.publicKey[0],output.addresses[0].address);
break;
case BlockChain::KT_STEALTH:
bitcoinRIPEMD160ToAddress(output.publicKey[0],output.addresses[0].address);
break;
case BlockChain::KT_UNCOMPRESSED_PUBLIC_KEY:
{
bitcoinPublicKeyToAddress(output.publicKey[0],output.addresses[0].address);
}
break;
case BlockChain::KT_COMPRESSED_PUBLIC_KEY:
{
bitcoinCompressedPublicKeyToAddress(output.publicKey[0],output.addresses[0].address);
}
break;
case BlockChain::KT_TRUNCATED_COMPRESSED_KEY:
{
uint8_t key[33];
key[0] = 0x2;
memcpy(&key,output.publicKey[0],32);
bitcoinCompressedPublicKeyToAddress(key,output.addresses[0].address);
}
break;
case BlockChain::KT_MULTISIG:
{
for (uint32_t i=0; i<MAX_MULTISIG; i++)
{
const uint8_t *key = output.publicKey[i];
if ( key == NULL )
break;
uint32_t mask = 1<<i;
if ( output.multiSigFormat & mask )
{
bitcoinCompressedPublicKeyToAddress(output.publicKey[i],output.addresses[i].address);
}
else
{
bitcoinPublicKeyToAddress(output.publicKey[i],output.addresses[i].address);
}
}
}
break;
default:
break;
}
output.keyTypeName = getKeyType(output.keyType);
getAsciiAddress(output);
// if ( output.keyType == BlockChain::KT_SCRIPT_HASH )
// {
// logMessage("ScriptHash: %s\r\n", output.asciiAddress );
// }
if ( gReportTransactionHash )
{
gIsWarning = true;
}
return ret;
}