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Move CScript class and dependencies to script/script

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This commit is contained in:
jtimon 2014-08-20 17:37:40 +02:00 committed by Pieter Wuille
parent 86dbeea2cd
commit cbd22a50c4
19 changed files with 957 additions and 934 deletions
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2
src/Makefile.am
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@ -98,6 +98,7 @@ BITCOIN_CORE_H = \
rpcclient.h \
rpcprotocol.h \
rpcserver.h \
script/script.h \
scriptutils.h \
serialize.h \
sync.h \
@ -206,6 +207,7 @@ libbitcoin_common_a_SOURCES = \
keystore.cpp \
netbase.cpp \
protocol.cpp \
script/script.cpp \
scriptutils.cpp \
$(BITCOIN_CORE_H)

2
src/base58.h
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@ -16,7 +16,7 @@
#include "chainparams.h"
#include "key.h"
#include "scriptutils.h"
#include "script/script.h"
#include <string>
#include <vector>

2
src/core_read.cpp
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@ -5,7 +5,7 @@
#include "core_io.h"
#include "core.h"
#include "serialize.h"
#include "scriptutils.h"
#include "script/script.h"
#include "util.h"
#include <boost/assign/list_of.hpp>

2
src/crypter.cpp
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@ -4,7 +4,7 @@
#include "crypter.h"
#include "scriptutils.h"
#include "script/script.h"
#include "util.h"
#include <string>

2
src/keystore.cpp
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@ -7,7 +7,7 @@
#include "crypter.h"
#include "key.h"
#include "scriptutils.h"
#include "script/script.h"
#include "util.h"
#include <boost/foreach.hpp>

2
src/qt/transactiondesc.cpp
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@ -11,7 +11,7 @@
#include "db.h"
#include "main.h"
#include "paymentserver.h"
#include "scriptutils.h"
#include "script/script.h"
#include "transactionrecord.h"
#include "timedata.h"
#include "ui_interface.h"

295
src/script/script.cpp Normal file
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@ -0,0 +1,295 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2013 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "script.h"
#include <boost/foreach.hpp>
using namespace std;
const char* GetOpName(opcodetype opcode)
{
switch (opcode)
{
// push value
case OP_0 : return "0";
case OP_PUSHDATA1 : return "OP_PUSHDATA1";
case OP_PUSHDATA2 : return "OP_PUSHDATA2";
case OP_PUSHDATA4 : return "OP_PUSHDATA4";
case OP_1NEGATE : return "-1";
case OP_RESERVED : return "OP_RESERVED";
case OP_1 : return "1";
case OP_2 : return "2";
case OP_3 : return "3";
case OP_4 : return "4";
case OP_5 : return "5";
case OP_6 : return "6";
case OP_7 : return "7";
case OP_8 : return "8";
case OP_9 : return "9";
case OP_10 : return "10";
case OP_11 : return "11";
case OP_12 : return "12";
case OP_13 : return "13";
case OP_14 : return "14";
case OP_15 : return "15";
case OP_16 : return "16";
// control
case OP_NOP : return "OP_NOP";
case OP_VER : return "OP_VER";
case OP_IF : return "OP_IF";
case OP_NOTIF : return "OP_NOTIF";
case OP_VERIF : return "OP_VERIF";
case OP_VERNOTIF : return "OP_VERNOTIF";
case OP_ELSE : return "OP_ELSE";
case OP_ENDIF : return "OP_ENDIF";
case OP_VERIFY : return "OP_VERIFY";
case OP_RETURN : return "OP_RETURN";
// stack ops
case OP_TOALTSTACK : return "OP_TOALTSTACK";
case OP_FROMALTSTACK : return "OP_FROMALTSTACK";
case OP_2DROP : return "OP_2DROP";
case OP_2DUP : return "OP_2DUP";
case OP_3DUP : return "OP_3DUP";
case OP_2OVER : return "OP_2OVER";
case OP_2ROT : return "OP_2ROT";
case OP_2SWAP : return "OP_2SWAP";
case OP_IFDUP : return "OP_IFDUP";
case OP_DEPTH : return "OP_DEPTH";
case OP_DROP : return "OP_DROP";
case OP_DUP : return "OP_DUP";
case OP_NIP : return "OP_NIP";
case OP_OVER : return "OP_OVER";
case OP_PICK : return "OP_PICK";
case OP_ROLL : return "OP_ROLL";
case OP_ROT : return "OP_ROT";
case OP_SWAP : return "OP_SWAP";
case OP_TUCK : return "OP_TUCK";
// splice ops
case OP_CAT : return "OP_CAT";
case OP_SUBSTR : return "OP_SUBSTR";
case OP_LEFT : return "OP_LEFT";
case OP_RIGHT : return "OP_RIGHT";
case OP_SIZE : return "OP_SIZE";
// bit logic
case OP_INVERT : return "OP_INVERT";
case OP_AND : return "OP_AND";
case OP_OR : return "OP_OR";
case OP_XOR : return "OP_XOR";
case OP_EQUAL : return "OP_EQUAL";
case OP_EQUALVERIFY : return "OP_EQUALVERIFY";
case OP_RESERVED1 : return "OP_RESERVED1";
case OP_RESERVED2 : return "OP_RESERVED2";
// numeric
case OP_1ADD : return "OP_1ADD";
case OP_1SUB : return "OP_1SUB";
case OP_2MUL : return "OP_2MUL";
case OP_2DIV : return "OP_2DIV";
case OP_NEGATE : return "OP_NEGATE";
case OP_ABS : return "OP_ABS";
case OP_NOT : return "OP_NOT";
case OP_0NOTEQUAL : return "OP_0NOTEQUAL";
case OP_ADD : return "OP_ADD";
case OP_SUB : return "OP_SUB";
case OP_MUL : return "OP_MUL";
case OP_DIV : return "OP_DIV";
case OP_MOD : return "OP_MOD";
case OP_LSHIFT : return "OP_LSHIFT";
case OP_RSHIFT : return "OP_RSHIFT";
case OP_BOOLAND : return "OP_BOOLAND";
case OP_BOOLOR : return "OP_BOOLOR";
case OP_NUMEQUAL : return "OP_NUMEQUAL";
case OP_NUMEQUALVERIFY : return "OP_NUMEQUALVERIFY";
case OP_NUMNOTEQUAL : return "OP_NUMNOTEQUAL";
case OP_LESSTHAN : return "OP_LESSTHAN";
case OP_GREATERTHAN : return "OP_GREATERTHAN";
case OP_LESSTHANOREQUAL : return "OP_LESSTHANOREQUAL";
case OP_GREATERTHANOREQUAL : return "OP_GREATERTHANOREQUAL";
case OP_MIN : return "OP_MIN";
case OP_MAX : return "OP_MAX";
case OP_WITHIN : return "OP_WITHIN";
// crypto
case OP_RIPEMD160 : return "OP_RIPEMD160";
case OP_SHA1 : return "OP_SHA1";
case OP_SHA256 : return "OP_SHA256";
case OP_HASH160 : return "OP_HASH160";
case OP_HASH256 : return "OP_HASH256";
case OP_CODESEPARATOR : return "OP_CODESEPARATOR";
case OP_CHECKSIG : return "OP_CHECKSIG";
case OP_CHECKSIGVERIFY : return "OP_CHECKSIGVERIFY";
case OP_CHECKMULTISIG : return "OP_CHECKMULTISIG";
case OP_CHECKMULTISIGVERIFY : return "OP_CHECKMULTISIGVERIFY";
// expanson
case OP_NOP1 : return "OP_NOP1";
case OP_NOP2 : return "OP_NOP2";
case OP_NOP3 : return "OP_NOP3";
case OP_NOP4 : return "OP_NOP4";
case OP_NOP5 : return "OP_NOP5";
case OP_NOP6 : return "OP_NOP6";
case OP_NOP7 : return "OP_NOP7";
case OP_NOP8 : return "OP_NOP8";
case OP_NOP9 : return "OP_NOP9";
case OP_NOP10 : return "OP_NOP10";
case OP_INVALIDOPCODE : return "OP_INVALIDOPCODE";
// Note:
// The template matching params OP_SMALLDATA/etc are defined in opcodetype enum
// as kind of implementation hack, they are *NOT* real opcodes. If found in real
// Script, just let the default: case deal with them.
default:
return "OP_UNKNOWN";
}
}
unsigned int CScript::GetSigOpCount(bool fAccurate) const
{
unsigned int n = 0;
const_iterator pc = begin();
opcodetype lastOpcode = OP_INVALIDOPCODE;
while (pc < end())
{
opcodetype opcode;
if (!GetOp(pc, opcode))
break;
if (opcode == OP_CHECKSIG || opcode == OP_CHECKSIGVERIFY)
n++;
else if (opcode == OP_CHECKMULTISIG || opcode == OP_CHECKMULTISIGVERIFY)
{
if (fAccurate && lastOpcode >= OP_1 && lastOpcode <= OP_16)
n += DecodeOP_N(lastOpcode);
else
n += 20;
}
lastOpcode = opcode;
}
return n;
}
unsigned int CScript::GetSigOpCount(const CScript& scriptSig) const
{
if (!IsPayToScriptHash())
return GetSigOpCount(true);
// This is a pay-to-script-hash scriptPubKey;
// get the last item that the scriptSig
// pushes onto the stack:
const_iterator pc = scriptSig.begin();
vector<unsigned char> data;
while (pc < scriptSig.end())
{
opcodetype opcode;
if (!scriptSig.GetOp(pc, opcode, data))
return 0;
if (opcode > OP_16)
return 0;
}
/// ... and return its opcount:
CScript subscript(data.begin(), data.end());
return subscript.GetSigOpCount(true);
}
bool CScript::IsPayToScriptHash() const
{
// Extra-fast test for pay-to-script-hash CScripts:
return (this->size() == 23 &&
this->at(0) == OP_HASH160 &&
this->at(1) == 0x14 &&
this->at(22) == OP_EQUAL);
}
bool CScript::IsPushOnly() const
{
const_iterator pc = begin();
while (pc < end())
{
opcodetype opcode;
if (!GetOp(pc, opcode))
return false;
// Note that IsPushOnly() *does* consider OP_RESERVED to be a
// push-type opcode, however execution of OP_RESERVED fails, so
// it's not relevant to P2SH as the scriptSig would fail prior to
// the P2SH special validation code being executed.
if (opcode > OP_16)
return false;
}
return true;
}
bool CScript::HasCanonicalPushes() const
{
const_iterator pc = begin();
while (pc < end())
{
opcodetype opcode;
std::vector<unsigned char> data;
if (!GetOp(pc, opcode, data))
return false;
if (opcode > OP_16)
continue;
if (opcode < OP_PUSHDATA1 && opcode > OP_0 && (data.size() == 1 && data[0] <= 16))
// Could have used an OP_n code, rather than a 1-byte push.
return false;
if (opcode == OP_PUSHDATA1 && data.size() < OP_PUSHDATA1)
// Could have used a normal n-byte push, rather than OP_PUSHDATA1.
return false;
if (opcode == OP_PUSHDATA2 && data.size() <= 0xFF)
// Could have used an OP_PUSHDATA1.
return false;
if (opcode == OP_PUSHDATA4 && data.size() <= 0xFFFF)
// Could have used an OP_PUSHDATA2.
return false;
}
return true;
}
class CScriptVisitor : public boost::static_visitor<bool>
{
private:
CScript *script;
public:
CScriptVisitor(CScript *scriptin) { script = scriptin; }
bool operator()(const CNoDestination &dest) const {
script->clear();
return false;
}
bool operator()(const CKeyID &keyID) const {
script->clear();
*script << OP_DUP << OP_HASH160 << keyID << OP_EQUALVERIFY << OP_CHECKSIG;
return true;
}
bool operator()(const CScriptID &scriptID) const {
script->clear();
*script << OP_HASH160 << scriptID << OP_EQUAL;
return true;
}
};
void CScript::SetDestination(const CTxDestination& dest)
{
boost::apply_visitor(CScriptVisitor(this), dest);
}
void CScript::SetMultisig(int nRequired, const std::vector<CPubKey>& keys)
{
this->clear();
*this << EncodeOP_N(nRequired);
BOOST_FOREACH(const CPubKey& key, keys)
*this << key;
*this << EncodeOP_N(keys.size()) << OP_CHECKMULTISIG;
}

645
src/script/script.h Normal file
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@ -0,0 +1,645 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2013 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef H_BITCOIN_SCRIPT
#define H_BITCOIN_SCRIPT
#include "key.h"
#include "tinyformat.h"
#include "utilstrencodings.h"
#include <stdexcept>
#include <boost/variant.hpp>
static const unsigned int MAX_SCRIPT_ELEMENT_SIZE = 520; // bytes
/** Script opcodes */
enum opcodetype
{
// push value
OP_0 = 0x00,
OP_FALSE = OP_0,
OP_PUSHDATA1 = 0x4c,
OP_PUSHDATA2 = 0x4d,
OP_PUSHDATA4 = 0x4e,
OP_1NEGATE = 0x4f,
OP_RESERVED = 0x50,
OP_1 = 0x51,
OP_TRUE=OP_1,
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,
// control
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,
// stack ops
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,
// splice ops
OP_CAT = 0x7e,
OP_SUBSTR = 0x7f,
OP_LEFT = 0x80,
OP_RIGHT = 0x81,
OP_SIZE = 0x82,
// bit logic
OP_INVERT = 0x83,
OP_AND = 0x84,
OP_OR = 0x85,
OP_XOR = 0x86,
OP_EQUAL = 0x87,
OP_EQUALVERIFY = 0x88,
OP_RESERVED1 = 0x89,
OP_RESERVED2 = 0x8a,
// numeric
OP_1ADD = 0x8b,
OP_1SUB = 0x8c,
OP_2MUL = 0x8d,
OP_2DIV = 0x8e,
OP_NEGATE = 0x8f,
OP_ABS = 0x90,
OP_NOT = 0x91,
OP_0NOTEQUAL = 0x92,
OP_ADD = 0x93,
OP_SUB = 0x94,
OP_MUL = 0x95,
OP_DIV = 0x96,
OP_MOD = 0x97,
OP_LSHIFT = 0x98,
OP_RSHIFT = 0x99,
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,
// crypto
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,
// expansion
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,
// template matching params
OP_SMALLDATA = 0xf9,
OP_SMALLINTEGER = 0xfa,
OP_PUBKEYS = 0xfb,
OP_PUBKEYHASH = 0xfd,
OP_PUBKEY = 0xfe,
OP_INVALIDOPCODE = 0xff,
};
const char* GetOpName(opcodetype opcode);
class scriptnum_error : public std::runtime_error
{
public:
explicit scriptnum_error(const std::string& str) : std::runtime_error(str) {}
};
class CScriptNum
{
// Numeric opcodes (OP_1ADD, etc) are restricted to operating on 4-byte integers.
// The semantics are subtle, though: operands must be in the range [-2^31 +1...2^31 -1],
// but results may overflow (and are valid as long as they are not used in a subsequent
// numeric operation). CScriptNum enforces those semantics by storing results as
// an int64 and allowing out-of-range values to be returned as a vector of bytes but
// throwing an exception if arithmetic is done or the result is interpreted as an integer.
public:
explicit CScriptNum(const int64_t& n)
{
m_value = n;
}
explicit CScriptNum(const std::vector<unsigned char>& vch)
{
if (vch.size() > nMaxNumSize)
throw scriptnum_error("CScriptNum(const std::vector<unsigned char>&) : overflow");
m_value = set_vch(vch);
}
inline bool operator==(const int64_t& rhs) const { return m_value == rhs; }
inline bool operator!=(const int64_t& rhs) const { return m_value != rhs; }
inline bool operator<=(const int64_t& rhs) const { return m_value <= rhs; }
inline bool operator< (const int64_t& rhs) const { return m_value < rhs; }
inline bool operator>=(const int64_t& rhs) const { return m_value >= rhs; }
inline bool operator> (const int64_t& rhs) const { return m_value > rhs; }
inline bool operator==(const CScriptNum& rhs) const { return operator==(rhs.m_value); }
inline bool operator!=(const CScriptNum& rhs) const { return operator!=(rhs.m_value); }
inline bool operator<=(const CScriptNum& rhs) const { return operator<=(rhs.m_value); }
inline bool operator< (const CScriptNum& rhs) const { return operator< (rhs.m_value); }
inline bool operator>=(const CScriptNum& rhs) const { return operator>=(rhs.m_value); }
inline bool operator> (const CScriptNum& rhs) const { return operator> (rhs.m_value); }
inline CScriptNum operator+( const int64_t& rhs) const { return CScriptNum(m_value + rhs);}
inline CScriptNum operator-( const int64_t& rhs) const { return CScriptNum(m_value - rhs);}
inline CScriptNum operator+( const CScriptNum& rhs) const { return operator+(rhs.m_value); }
inline CScriptNum operator-( const CScriptNum& rhs) const { return operator-(rhs.m_value); }
inline CScriptNum& operator+=( const CScriptNum& rhs) { return operator+=(rhs.m_value); }
inline CScriptNum& operator-=( const CScriptNum& rhs) { return operator-=(rhs.m_value); }
inline CScriptNum operator-() const
{
assert(m_value != std::numeric_limits<int64_t>::min());
return CScriptNum(-m_value);
}
inline CScriptNum& operator=( const int64_t& rhs)
{
m_value = rhs;
return *this;
}
inline CScriptNum& operator+=( const int64_t& rhs)
{
assert(rhs == 0 || (rhs > 0 && m_value <= std::numeric_limits<int64_t>::max() - rhs) ||
(rhs < 0 && m_value >= std::numeric_limits<int64_t>::min() - rhs));
m_value += rhs;
return *this;
}
inline CScriptNum& operator-=( const int64_t& rhs)
{
assert(rhs == 0 || (rhs > 0 && m_value >= std::numeric_limits<int64_t>::min() + rhs) ||
(rhs < 0 && m_value <= std::numeric_limits<int64_t>::max() + rhs));
m_value -= rhs;
return *this;
}
int getint() const
{
if (m_value > std::numeric_limits<int>::max())
return std::numeric_limits<int>::max();
else if (m_value < std::numeric_limits<int>::min())
return std::numeric_limits<int>::min();
return m_value;
}
std::vector<unsigned char> getvch() const
{
return serialize(m_value);
}
static std::vector<unsigned char> serialize(const int64_t& value)
{
if(value == 0)
return std::vector<unsigned char>();
std::vector<unsigned char> result;
const bool neg = value < 0;
uint64_t absvalue = neg ? -value : value;
while(absvalue)
{
result.push_back(absvalue & 0xff);
absvalue >>= 8;
}
// - If the most significant byte is >= 0x80 and the value is positive, push a
// new zero-byte to make the significant byte < 0x80 again.
// - If the most significant byte is >= 0x80 and the value is negative, push a
// new 0x80 byte that will be popped off when converting to an integral.
// - If the most significant byte is < 0x80 and the value is negative, add
// 0x80 to it, since it will be subtracted and interpreted as a negative when
// converting to an integral.
if (result.back() & 0x80)
result.push_back(neg ? 0x80 : 0);
else if (neg)
result.back() |= 0x80;
return result;
}
static const size_t nMaxNumSize = 4;
private:
static int64_t set_vch(const std::vector<unsigned char>& vch)
{
if (vch.empty())
return 0;
int64_t result = 0;
for (size_t i = 0; i != vch.size(); ++i)
result |= static_cast<int64_t>(vch[i]) << 8*i;
// If the input vector's most significant byte is 0x80, remove it from
// the result's msb and return a negative.
if (vch.back() & 0x80)
return -(result & ~(0x80ULL << (8 * (vch.size() - 1))));
return result;
}
int64_t m_value;
};
inline std::string ValueString(const std::vector<unsigned char>& vch)
{
if (vch.size() <= 4)
return strprintf("%d", CScriptNum(vch).getint());
else
return HexStr(vch);
}
class CNoDestination {
public:
friend bool operator==(const CNoDestination &a, const CNoDestination &b) { return true; }
friend bool operator<(const CNoDestination &a, const CNoDestination &b) { return true; }
};
/** A txout script template with a specific destination. It is either:
* * CNoDestination: no destination set
* * CKeyID: TX_PUBKEYHASH destination
* * CScriptID: TX_SCRIPTHASH destination
* A CTxDestination is the internal data type encoded in a CBitcoinAddress
*/
typedef boost::variant<CNoDestination, CKeyID, CScriptID> CTxDestination;
/** Serialized script, used inside transaction inputs and outputs */
class CScript : public std::vector<unsigned char>
{
protected:
CScript& push_int64(int64_t n)
{
if (n == -1 || (n >= 1 && n <= 16))
{
push_back(n + (OP_1 - 1));
}
else
{
*this << CScriptNum::serialize(n);
}
return *this;
}
public:
CScript() { }
CScript(const CScript& b) : std::vector<unsigned char>(b.begin(), b.end()) { }
CScript(const_iterator pbegin, const_iterator pend) : std::vector<unsigned char>(pbegin, pend) { }
#ifndef _MSC_VER
CScript(const unsigned char* pbegin, const unsigned char* pend) : std::vector<unsigned char>(pbegin, pend) { }
#endif
CScript& operator+=(const CScript& b)
{
insert(end(), b.begin(), b.end());
return *this;
}
friend CScript operator+(const CScript& a, const CScript& b)
{
CScript ret = a;
ret += b;
return ret;
}
CScript(int64_t b) { operator<<(b); }
explicit CScript(opcodetype b) { operator<<(b); }
explicit CScript(const uint256& b) { operator<<(b); }
explicit CScript(const CScriptNum& b) { operator<<(b); }
explicit CScript(const std::vector<unsigned char>& b) { operator<<(b); }
CScript& operator<<(int64_t b) { return push_int64(b); }
CScript& operator<<(opcodetype opcode)
{
if (opcode < 0 || opcode > 0xff)
throw std::runtime_error("CScript::operator<<() : invalid opcode");
insert(end(), (unsigned char)opcode);
return *this;
}
CScript& operator<<(const uint160& b)
{
insert(end(), sizeof(b));
insert(end(), (unsigned char*)&b, (unsigned char*)&b + sizeof(b));
return *this;
}
CScript& operator<<(const uint256& b)
{
insert(end(), sizeof(b));
insert(end(), (unsigned char*)&b, (unsigned char*)&b + sizeof(b));
return *this;
}
CScript& operator<<(const CPubKey& key)
{
assert(key.size() < OP_PUSHDATA1);
insert(end(), (unsigned char)key.size());
insert(end(), key.begin(), key.end());
return *this;
}
CScript& operator<<(const CScriptNum& b)
{
*this << b.getvch();
return *this;
}
CScript& operator<<(const std::vector<unsigned char>& b)
{
if (b.size() < OP_PUSHDATA1)
{
insert(end(), (unsigned char)b.size());
}
else if (b.size() <= 0xff)
{
insert(end(), OP_PUSHDATA1);
insert(end(), (unsigned char)b.size());
}
else if (b.size() <= 0xffff)
{
insert(end(), OP_PUSHDATA2);
unsigned short nSize = b.size();
insert(end(), (unsigned char*)&nSize, (unsigned char*)&nSize + sizeof(nSize));
}
else
{
insert(end(), OP_PUSHDATA4);
unsigned int nSize = b.size();
insert(end(), (unsigned char*)&nSize, (unsigned char*)&nSize + sizeof(nSize));
}
insert(end(), b.begin(), b.end());
return *this;
}
CScript& operator<<(const CScript& b)
{
// I'm not sure if this should push the script or concatenate scripts.
// If there's ever a use for pushing a script onto a script, delete this member fn
assert(!"Warning: Pushing a CScript onto a CScript with << is probably not intended, use + to concatenate!");
return *this;
}
bool GetOp(iterator& pc, opcodetype& opcodeRet, std::vector<unsigned char>& vchRet)
{
// Wrapper so it can be called with either iterator or const_iterator
const_iterator pc2 = pc;
bool fRet = GetOp2(pc2, opcodeRet, &vchRet);
pc = begin() + (pc2 - begin());
return fRet;
}
bool GetOp(iterator& pc, opcodetype& opcodeRet)
{
const_iterator pc2 = pc;
bool fRet = GetOp2(pc2, opcodeRet, NULL);
pc = begin() + (pc2 - begin());
return fRet;
}
bool GetOp(const_iterator& pc, opcodetype& opcodeRet, std::vector<unsigned char>& vchRet) const
{
return GetOp2(pc, opcodeRet, &vchRet);
}
bool GetOp(const_iterator& pc, opcodetype& opcodeRet) const
{
return GetOp2(pc, opcodeRet, NULL);
}
bool GetOp2(const_iterator& pc, opcodetype& opcodeRet, std::vector<unsigned char>* pvchRet) const
{
opcodeRet = OP_INVALIDOPCODE;
if (pvchRet)
pvchRet->clear();
if (pc >= end())
return false;
// Read instruction
if (end() - pc < 1)
return false;
unsigned int opcode = *pc++;
// Immediate operand
if (opcode <= OP_PUSHDATA4)
{
unsigned int nSize = 0;
if (opcode < OP_PUSHDATA1)
{
nSize = opcode;
}
else if (opcode == OP_PUSHDATA1)
{
if (end() - pc < 1)
return false;
nSize = *pc++;
}
else if (opcode == OP_PUSHDATA2)
{
if (end() - pc < 2)
return false;
nSize = 0;
memcpy(&nSize, &pc[0], 2);
pc += 2;
}
else if (opcode == OP_PUSHDATA4)
{
if (end() - pc < 4)
return false;
memcpy(&nSize, &pc[0], 4);
pc += 4;
}
if (end() - pc < 0 || (unsigned int)(end() - pc) < nSize)
return false;
if (pvchRet)
pvchRet->assign(pc, pc + nSize);
pc += nSize;
}
opcodeRet = (opcodetype)opcode;
return true;
}
// Encode/decode small integers:
static int DecodeOP_N(opcodetype opcode)
{
if (opcode == OP_0)
return 0;
assert(opcode >= OP_1 && opcode <= OP_16);
return (int)opcode - (int)(OP_1 - 1);
}
static opcodetype EncodeOP_N(int n)
{
assert(n >= 0 && n <= 16);
if (n == 0)
return OP_0;
return (opcodetype)(OP_1+n-1);
}
int FindAndDelete(const CScript& b)
{
int nFound = 0;
if (b.empty())
return nFound;
iterator pc = begin();
opcodetype opcode;
do
{
while (end() - pc >= (long)b.size() && memcmp(&pc[0], &b[0], b.size()) == 0)
{
erase(pc, pc + b.size());
++nFound;
}
}
while (GetOp(pc, opcode));
return nFound;
}
int Find(opcodetype op) const
{
int nFound = 0;
opcodetype opcode;
for (const_iterator pc = begin(); pc != end() && GetOp(pc, opcode);)
if (opcode == op)
++nFound;
return nFound;
}
// Pre-version-0.6, Bitcoin always counted CHECKMULTISIGs
// as 20 sigops. With pay-to-script-hash, that changed:
// CHECKMULTISIGs serialized in scriptSigs are
// counted more accurately, assuming they are of the form
// ... OP_N CHECKMULTISIG ...
unsigned int GetSigOpCount(bool fAccurate) const;
// Accurately count sigOps, including sigOps in
// pay-to-script-hash transactions:
unsigned int GetSigOpCount(const CScript& scriptSig) const;
bool IsPayToScriptHash() const;
// Called by IsStandardTx and P2SH VerifyScript (which makes it consensus-critical).
bool IsPushOnly() const;
// Called by IsStandardTx.
bool HasCanonicalPushes() const;
// Returns whether the script is guaranteed to fail at execution,
// regardless of the initial stack. This allows outputs to be pruned
// instantly when entering the UTXO set.
bool IsUnspendable() const
{
return (size() > 0 && *begin() == OP_RETURN);
}
void SetDestination(const CTxDestination& address);
void SetMultisig(int nRequired, const std::vector<CPubKey>& keys);
std::string ToString() const
{
std::string str;
opcodetype opcode;
std::vector<unsigned char> vch;
const_iterator pc = begin();
while (pc < end())
{
if (!str.empty())
str += " ";
if (!GetOp(pc, opcode, vch))
{
str += "[error]";
return str;
}
if (0 <= opcode && opcode <= OP_PUSHDATA4)
str += ValueString(vch);
else
str += GetOpName(opcode);
}
return str;
}
CScriptID GetID() const
{
return CScriptID(Hash160(*this));
}
void clear()
{
// The default std::vector::clear() does not release memory.
std::vector<unsigned char>().swap(*this);
}
};
#endif

288
src/scriptutils.cpp
View File

@ -81,150 +81,6 @@ const char* GetTxnOutputType(txnouttype t)
return NULL;
}
const char* GetOpName(opcodetype opcode)
{
switch (opcode)
{
// push value
case OP_0 : return "0";
case OP_PUSHDATA1 : return "OP_PUSHDATA1";
case OP_PUSHDATA2 : return "OP_PUSHDATA2";
case OP_PUSHDATA4 : return "OP_PUSHDATA4";
case OP_1NEGATE : return "-1";
case OP_RESERVED : return "OP_RESERVED";
case OP_1 : return "1";
case OP_2 : return "2";
case OP_3 : return "3";
case OP_4 : return "4";
case OP_5 : return "5";
case OP_6 : return "6";
case OP_7 : return "7";
case OP_8 : return "8";
case OP_9 : return "9";
case OP_10 : return "10";
case OP_11 : return "11";
case OP_12 : return "12";
case OP_13 : return "13";
case OP_14 : return "14";
case OP_15 : return "15";
case OP_16 : return "16";
// control
case OP_NOP : return "OP_NOP";
case OP_VER : return "OP_VER";
case OP_IF : return "OP_IF";
case OP_NOTIF : return "OP_NOTIF";
case OP_VERIF : return "OP_VERIF";
case OP_VERNOTIF : return "OP_VERNOTIF";
case OP_ELSE : return "OP_ELSE";
case OP_ENDIF : return "OP_ENDIF";
case OP_VERIFY : return "OP_VERIFY";
case OP_RETURN : return "OP_RETURN";
// stack ops
case OP_TOALTSTACK : return "OP_TOALTSTACK";
case OP_FROMALTSTACK : return "OP_FROMALTSTACK";
case OP_2DROP : return "OP_2DROP";
case OP_2DUP : return "OP_2DUP";
case OP_3DUP : return "OP_3DUP";
case OP_2OVER : return "OP_2OVER";
case OP_2ROT : return "OP_2ROT";
case OP_2SWAP : return "OP_2SWAP";
case OP_IFDUP : return "OP_IFDUP";
case OP_DEPTH : return "OP_DEPTH";
case OP_DROP : return "OP_DROP";
case OP_DUP : return "OP_DUP";
case OP_NIP : return "OP_NIP";
case OP_OVER : return "OP_OVER";
case OP_PICK : return "OP_PICK";
case OP_ROLL : return "OP_ROLL";
case OP_ROT : return "OP_ROT";
case OP_SWAP : return "OP_SWAP";
case OP_TUCK : return "OP_TUCK";
// splice ops
case OP_CAT : return "OP_CAT";
case OP_SUBSTR : return "OP_SUBSTR";
case OP_LEFT : return "OP_LEFT";
case OP_RIGHT : return "OP_RIGHT";
case OP_SIZE : return "OP_SIZE";
// bit logic
case OP_INVERT : return "OP_INVERT";
case OP_AND : return "OP_AND";
case OP_OR : return "OP_OR";
case OP_XOR : return "OP_XOR";
case OP_EQUAL : return "OP_EQUAL";
case OP_EQUALVERIFY : return "OP_EQUALVERIFY";
case OP_RESERVED1 : return "OP_RESERVED1";
case OP_RESERVED2 : return "OP_RESERVED2";
// numeric
case OP_1ADD : return "OP_1ADD";
case OP_1SUB : return "OP_1SUB";
case OP_2MUL : return "OP_2MUL";
case OP_2DIV : return "OP_2DIV";
case OP_NEGATE : return "OP_NEGATE";
case OP_ABS : return "OP_ABS";
case OP_NOT : return "OP_NOT";
case OP_0NOTEQUAL : return "OP_0NOTEQUAL";
case OP_ADD : return "OP_ADD";
case OP_SUB : return "OP_SUB";
case OP_MUL : return "OP_MUL";
case OP_DIV : return "OP_DIV";
case OP_MOD : return "OP_MOD";
case OP_LSHIFT : return "OP_LSHIFT";
case OP_RSHIFT : return "OP_RSHIFT";
case OP_BOOLAND : return "OP_BOOLAND";
case OP_BOOLOR : return "OP_BOOLOR";
case OP_NUMEQUAL : return "OP_NUMEQUAL";
case OP_NUMEQUALVERIFY : return "OP_NUMEQUALVERIFY";
case OP_NUMNOTEQUAL : return "OP_NUMNOTEQUAL";
case OP_LESSTHAN : return "OP_LESSTHAN";
case OP_GREATERTHAN : return "OP_GREATERTHAN";
case OP_LESSTHANOREQUAL : return "OP_LESSTHANOREQUAL";
case OP_GREATERTHANOREQUAL : return "OP_GREATERTHANOREQUAL";
case OP_MIN : return "OP_MIN";
case OP_MAX : return "OP_MAX";
case OP_WITHIN : return "OP_WITHIN";
// crypto
case OP_RIPEMD160 : return "OP_RIPEMD160";
case OP_SHA1 : return "OP_SHA1";
case OP_SHA256 : return "OP_SHA256";
case OP_HASH160 : return "OP_HASH160";
case OP_HASH256 : return "OP_HASH256";
case OP_CODESEPARATOR : return "OP_CODESEPARATOR";
case OP_CHECKSIG : return "OP_CHECKSIG";
case OP_CHECKSIGVERIFY : return "OP_CHECKSIGVERIFY";
case OP_CHECKMULTISIG : return "OP_CHECKMULTISIG";
case OP_CHECKMULTISIGVERIFY : return "OP_CHECKMULTISIGVERIFY";
// expanson
case OP_NOP1 : return "OP_NOP1";
case OP_NOP2 : return "OP_NOP2";
case OP_NOP3 : return "OP_NOP3";
case OP_NOP4 : return "OP_NOP4";
case OP_NOP5 : return "OP_NOP5";
case OP_NOP6 : return "OP_NOP6";
case OP_NOP7 : return "OP_NOP7";
case OP_NOP8 : return "OP_NOP8";
case OP_NOP9 : return "OP_NOP9";
case OP_NOP10 : return "OP_NOP10";
case OP_INVALIDOPCODE : return "OP_INVALIDOPCODE";
// Note:
// The template matching params OP_SMALLDATA/etc are defined in opcodetype enum
// as kind of implementation hack, they are *NOT* real opcodes. If found in real
// Script, just let the default: case deal with them.
default:
return "OP_UNKNOWN";
}
}
bool IsCanonicalPubKey(const valtype &vchPubKey, unsigned int flags) {
if (!(flags & SCRIPT_VERIFY_STRICTENC))
return true;
@ -1813,150 +1669,6 @@ CScript CombineSignatures(CScript scriptPubKey, const CTransaction& txTo, unsign
return CombineSignatures(scriptPubKey, txTo, nIn, txType, vSolutions, stack1, stack2);
}
unsigned int CScript::GetSigOpCount(bool fAccurate) const
{
unsigned int n = 0;
const_iterator pc = begin();
opcodetype lastOpcode = OP_INVALIDOPCODE;
while (pc < end())
{
opcodetype opcode;
if (!GetOp(pc, opcode))
break;
if (opcode == OP_CHECKSIG || opcode == OP_CHECKSIGVERIFY)
n++;
else if (opcode == OP_CHECKMULTISIG || opcode == OP_CHECKMULTISIGVERIFY)
{
if (fAccurate && lastOpcode >= OP_1 && lastOpcode <= OP_16)
n += DecodeOP_N(lastOpcode);
else
n += 20;
}
lastOpcode = opcode;
}
return n;
}
unsigned int CScript::GetSigOpCount(const CScript& scriptSig) const
{
if (!IsPayToScriptHash())
return GetSigOpCount(true);
// This is a pay-to-script-hash scriptPubKey;
// get the last item that the scriptSig
// pushes onto the stack:
const_iterator pc = scriptSig.begin();
vector<unsigned char> data;
while (pc < scriptSig.end())
{
opcodetype opcode;
if (!scriptSig.GetOp(pc, opcode, data))
return 0;
if (opcode > OP_16)
return 0;
}
/// ... and return its opcount:
CScript subscript(data.begin(), data.end());
return subscript.GetSigOpCount(true);
}
bool CScript::IsPayToScriptHash() const
{
// Extra-fast test for pay-to-script-hash CScripts:
return (this->size() == 23 &&
this->at(0) == OP_HASH160 &&
this->at(1) == 0x14 &&
this->at(22) == OP_EQUAL);
}
bool CScript::IsPushOnly() const
{
const_iterator pc = begin();
while (pc < end())
{
// Note how a script with an invalid PUSHDATA returns False.
opcodetype opcode;
if (!GetOp(pc, opcode))
return false;
// Note that IsPushOnly() *does* consider OP_RESERVED to be a
// push-type opcode, however execution of OP_RESERVED fails, so
// it's not relevant to P2SH as the scriptSig would fail prior to
// the P2SH special validation code being executed.
if (opcode > OP_16)
return false;
}
return true;
}
bool CScript::HasCanonicalPushes() const
{
const_iterator pc = begin();
while (pc < end())
{
opcodetype opcode;
std::vector<unsigned char> data;
if (!GetOp(pc, opcode, data))
return false;
if (opcode > OP_16)
continue;
if (opcode < OP_PUSHDATA1 && opcode > OP_0 && (data.size() == 1 && data[0] <= 16))
// Could have used an OP_n code, rather than a 1-byte push.
return false;
if (opcode == OP_PUSHDATA1 && data.size() < OP_PUSHDATA1)
// Could have used a normal n-byte push, rather than OP_PUSHDATA1.
return false;
if (opcode == OP_PUSHDATA2 && data.size() <= 0xFF)
// Could have used an OP_PUSHDATA1.
return false;
if (opcode == OP_PUSHDATA4 && data.size() <= 0xFFFF)
// Could have used an OP_PUSHDATA2.
return false;
}
return true;
}
class CScriptVisitor : public boost::static_visitor<bool>
{
private:
CScript *script;
public:
CScriptVisitor(CScript *scriptin) { script = scriptin; }
bool operator()(const CNoDestination &dest) const {
script->clear();
return false;
}
bool operator()(const CKeyID &keyID) const {
script->clear();
*script << OP_DUP << OP_HASH160 << keyID << OP_EQUALVERIFY << OP_CHECKSIG;
return true;
}
bool operator()(const CScriptID &scriptID) const {
script->clear();
*script << OP_HASH160 << scriptID << OP_EQUAL;
return true;
}
};
void CScript::SetDestination(const CTxDestination& dest)
{
boost::apply_visitor(CScriptVisitor(this), dest);
}
void CScript::SetMultisig(int nRequired, const std::vector<CPubKey>& keys)
{
this->clear();
*this << EncodeOP_N(nRequired);
BOOST_FOREACH(const CPubKey& key, keys)
*this << key;
*this << EncodeOP_N(keys.size()) << OP_CHECKMULTISIG;
}
bool CScriptCompressor::IsToKeyID(CKeyID &hash) const
{
if (script.size() == 25 && script[0] == OP_DUP && script[1] == OP_HASH160

637
src/scriptutils.h
View File

@ -7,172 +7,19 @@
#define H_BITCOIN_SCRIPTUTILS
#include "key.h"
#include "utilstrencodings.h"
#include "tinyformat.h"
#include "script/script.h"
#include <stdexcept>
#include <stdint.h>
#include <string>
#include <vector>
#include <boost/variant.hpp>
class CKeyStore;
class CTransaction;
struct CMutableTransaction;
static const unsigned int MAX_SCRIPT_ELEMENT_SIZE = 520; // bytes
static const unsigned int MAX_OP_RETURN_RELAY = 40; // bytes
class scriptnum_error : public std::runtime_error
{
public:
explicit scriptnum_error(const std::string& str) : std::runtime_error(str) {}
};
class CScriptNum
{
// Numeric opcodes (OP_1ADD, etc) are restricted to operating on 4-byte integers.
// The semantics are subtle, though: operands must be in the range [-2^31 +1...2^31 -1],
// but results may overflow (and are valid as long as they are not used in a subsequent
// numeric operation). CScriptNum enforces those semantics by storing results as
// an int64 and allowing out-of-range values to be returned as a vector of bytes but
// throwing an exception if arithmetic is done or the result is interpreted as an integer.
public:
explicit CScriptNum(const int64_t& n)
{
m_value = n;
}
explicit CScriptNum(const std::vector<unsigned char>& vch)
{
if (vch.size() > nMaxNumSize)
throw scriptnum_error("CScriptNum(const std::vector<unsigned char>&) : overflow");
m_value = set_vch(vch);
}
inline bool operator==(const int64_t& rhs) const { return m_value == rhs; }
inline bool operator!=(const int64_t& rhs) const { return m_value != rhs; }
inline bool operator<=(const int64_t& rhs) const { return m_value <= rhs; }
inline bool operator< (const int64_t& rhs) const { return m_value < rhs; }
inline bool operator>=(const int64_t& rhs) const { return m_value >= rhs; }
inline bool operator> (const int64_t& rhs) const { return m_value > rhs; }
inline bool operator==(const CScriptNum& rhs) const { return operator==(rhs.m_value); }
inline bool operator!=(const CScriptNum& rhs) const { return operator!=(rhs.m_value); }
inline bool operator<=(const CScriptNum& rhs) const { return operator<=(rhs.m_value); }
inline bool operator< (const CScriptNum& rhs) const { return operator< (rhs.m_value); }
inline bool operator>=(const CScriptNum& rhs) const { return operator>=(rhs.m_value); }
inline bool operator> (const CScriptNum& rhs) const { return operator> (rhs.m_value); }
inline CScriptNum operator+( const int64_t& rhs) const { return CScriptNum(m_value + rhs);}
inline CScriptNum operator-( const int64_t& rhs) const { return CScriptNum(m_value - rhs);}
inline CScriptNum operator+( const CScriptNum& rhs) const { return operator+(rhs.m_value); }
inline CScriptNum operator-( const CScriptNum& rhs) const { return operator-(rhs.m_value); }
inline CScriptNum& operator+=( const CScriptNum& rhs) { return operator+=(rhs.m_value); }
inline CScriptNum& operator-=( const CScriptNum& rhs) { return operator-=(rhs.m_value); }
inline CScriptNum operator-() const
{
assert(m_value != std::numeric_limits<int64_t>::min());
return CScriptNum(-m_value);
}
inline CScriptNum& operator=( const int64_t& rhs)
{
m_value = rhs;
return *this;
}
inline CScriptNum& operator+=( const int64_t& rhs)
{
assert(rhs == 0 || (rhs > 0 && m_value <= std::numeric_limits<int64_t>::max() - rhs) ||
(rhs < 0 && m_value >= std::numeric_limits<int64_t>::min() - rhs));
m_value += rhs;
return *this;
}
inline CScriptNum& operator-=( const int64_t& rhs)
{
assert(rhs == 0 || (rhs > 0 && m_value >= std::numeric_limits<int64_t>::min() + rhs) ||
(rhs < 0 && m_value <= std::numeric_limits<int64_t>::max() + rhs));
m_value -= rhs;
return *this;
}
int getint() const
{
if (m_value > std::numeric_limits<int>::max())
return std::numeric_limits<int>::max();
else if (m_value < std::numeric_limits<int>::min())
return std::numeric_limits<int>::min();
return m_value;
}
std::vector<unsigned char> getvch() const
{
return serialize(m_value);
}
static std::vector<unsigned char> serialize(const int64_t& value)
{
if(value == 0)
return std::vector<unsigned char>();
std::vector<unsigned char> result;
const bool neg = value < 0;
uint64_t absvalue = neg ? -value : value;
while(absvalue)
{
result.push_back(absvalue & 0xff);
absvalue >>= 8;
}
// - If the most significant byte is >= 0x80 and the value is positive, push a
// new zero-byte to make the significant byte < 0x80 again.
// - If the most significant byte is >= 0x80 and the value is negative, push a
// new 0x80 byte that will be popped off when converting to an integral.
// - If the most significant byte is < 0x80 and the value is negative, add
// 0x80 to it, since it will be subtracted and interpreted as a negative when
// converting to an integral.
if (result.back() & 0x80)
result.push_back(neg ? 0x80 : 0);
else if (neg)
result.back() |= 0x80;
return result;
}
static const size_t nMaxNumSize = 4;
private:
static int64_t set_vch(const std::vector<unsigned char>& vch)
{
if (vch.empty())
return 0;
int64_t result = 0;
for (size_t i = 0; i != vch.size(); ++i)
result |= static_cast<int64_t>(vch[i]) << 8*i;
// If the input vector's most significant byte is 0x80, remove it from
// the result's msb and return a negative.
if (vch.back() & 0x80)
return -(result & ~(0x80ULL << (8 * (vch.size() - 1))));
return result;
}
int64_t m_value;
};
/** Signature hash types/flags */
enum
{
@ -234,490 +81,8 @@ enum txnouttype
TX_NULL_DATA,
};
class CNoDestination {
public:
friend bool operator==(const CNoDestination &a, const CNoDestination &b) { return true; }
friend bool operator<(const CNoDestination &a, const CNoDestination &b) { return true; }
};
/** A txout script template with a specific destination. It is either:
* * CNoDestination: no destination set
* * CKeyID: TX_PUBKEYHASH destination
* * CScriptID: TX_SCRIPTHASH destination
* A CTxDestination is the internal data type encoded in a CBitcoinAddress
*/
typedef boost::variant<CNoDestination, CKeyID, CScriptID> CTxDestination;
const char* GetTxnOutputType(txnouttype t);
/** Script opcodes */
enum opcodetype
{
// push value
OP_0 = 0x00,
OP_FALSE = OP_0,
OP_PUSHDATA1 = 0x4c,
OP_PUSHDATA2 = 0x4d,
OP_PUSHDATA4 = 0x4e,
OP_1NEGATE = 0x4f,
OP_RESERVED = 0x50,
OP_1 = 0x51,
OP_TRUE=OP_1,
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,
// control
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,
// stack ops
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,
// splice ops
OP_CAT = 0x7e,
OP_SUBSTR = 0x7f,
OP_LEFT = 0x80,
OP_RIGHT = 0x81,
OP_SIZE = 0x82,
// bit logic
OP_INVERT = 0x83,
OP_AND = 0x84,
OP_OR = 0x85,
OP_XOR = 0x86,
OP_EQUAL = 0x87,
OP_EQUALVERIFY = 0x88,
OP_RESERVED1 = 0x89,
OP_RESERVED2 = 0x8a,
// numeric
OP_1ADD = 0x8b,
OP_1SUB = 0x8c,
OP_2MUL = 0x8d,
OP_2DIV = 0x8e,
OP_NEGATE = 0x8f,
OP_ABS = 0x90,
OP_NOT = 0x91,
OP_0NOTEQUAL = 0x92,
OP_ADD = 0x93,
OP_SUB = 0x94,
OP_MUL = 0x95,
OP_DIV = 0x96,
OP_MOD = 0x97,
OP_LSHIFT = 0x98,
OP_RSHIFT = 0x99,
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,
// crypto
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,
// expansion
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,
// template matching params
OP_SMALLDATA = 0xf9,
OP_SMALLINTEGER = 0xfa,
OP_PUBKEYS = 0xfb,
OP_PUBKEYHASH = 0xfd,
OP_PUBKEY = 0xfe,
OP_INVALIDOPCODE = 0xff,
};
const char* GetOpName(opcodetype opcode);
inline std::string ValueString(const std::vector<unsigned char>& vch)
{
if (vch.size() <= 4)
return strprintf("%d", CScriptNum(vch).getint());
else
return HexStr(vch);
}
/** Serialized script, used inside transaction inputs and outputs */
class CScript : public std::vector<unsigned char>
{
protected:
CScript& push_int64(int64_t n)
{
if (n == -1 || (n >= 1 && n <= 16))
{
push_back(n + (OP_1 - 1));
}
else
{
*this << CScriptNum::serialize(n);
}
return *this;
}
public:
CScript() { }
CScript(const CScript& b) : std::vector<unsigned char>(b.begin(), b.end()) { }
CScript(const_iterator pbegin, const_iterator pend) : std::vector<unsigned char>(pbegin, pend) { }
#ifndef _MSC_VER
CScript(const unsigned char* pbegin, const unsigned char* pend) : std::vector<unsigned char>(pbegin, pend) { }
#endif
CScript& operator+=(const CScript& b)
{
insert(end(), b.begin(), b.end());
return *this;
}
friend CScript operator+(const CScript& a, const CScript& b)
{
CScript ret = a;
ret += b;
return ret;
}
CScript(int64_t b) { operator<<(b); }
explicit CScript(opcodetype b) { operator<<(b); }
explicit CScript(const uint256& b) { operator<<(b); }
explicit CScript(const CScriptNum& b) { operator<<(b); }
explicit CScript(const std::vector<unsigned char>& b) { operator<<(b); }
CScript& operator<<(int64_t b) { return push_int64(b); }
CScript& operator<<(opcodetype opcode)
{
if (opcode < 0 || opcode > 0xff)
throw std::runtime_error("CScript::operator<<() : invalid opcode");
insert(end(), (unsigned char)opcode);
return *this;
}
CScript& operator<<(const uint160& b)
{
insert(end(), sizeof(b));
insert(end(), (unsigned char*)&b, (unsigned char*)&b + sizeof(b));
return *this;
}
CScript& operator<<(const uint256& b)
{
insert(end(), sizeof(b));
insert(end(), (unsigned char*)&b, (unsigned char*)&b + sizeof(b));
return *this;
}
CScript& operator<<(const CPubKey& key)
{
assert(key.size() < OP_PUSHDATA1);
insert(end(), (unsigned char)key.size());
insert(end(), key.begin(), key.end());
return *this;
}
CScript& operator<<(const CScriptNum& b)
{
*this << b.getvch();
return *this;
}
CScript& operator<<(const std::vector<unsigned char>& b)
{
if (b.size() < OP_PUSHDATA1)
{
insert(end(), (unsigned char)b.size());
}
else if (b.size() <= 0xff)
{
insert(end(), OP_PUSHDATA1);
insert(end(), (unsigned char)b.size());
}
else if (b.size() <= 0xffff)
{
insert(end(), OP_PUSHDATA2);
unsigned short nSize = b.size();
insert(end(), (unsigned char*)&nSize, (unsigned char*)&nSize + sizeof(nSize));
}
else
{
insert(end(), OP_PUSHDATA4);
unsigned int nSize = b.size();
insert(end(), (unsigned char*)&nSize, (unsigned char*)&nSize + sizeof(nSize));
}
insert(end(), b.begin(), b.end());
return *this;
}
CScript& operator<<(const CScript& b)
{
// I'm not sure if this should push the script or concatenate scripts.
// If there's ever a use for pushing a script onto a script, delete this member fn
assert(!"Warning: Pushing a CScript onto a CScript with << is probably not intended, use + to concatenate!");
return *this;
}
bool GetOp(iterator& pc, opcodetype& opcodeRet, std::vector<unsigned char>& vchRet)
{
// Wrapper so it can be called with either iterator or const_iterator
const_iterator pc2 = pc;
bool fRet = GetOp2(pc2, opcodeRet, &vchRet);
pc = begin() + (pc2 - begin());
return fRet;
}
bool GetOp(iterator& pc, opcodetype& opcodeRet)
{
const_iterator pc2 = pc;
bool fRet = GetOp2(pc2, opcodeRet, NULL);
pc = begin() + (pc2 - begin());
return fRet;
}
bool GetOp(const_iterator& pc, opcodetype& opcodeRet, std::vector<unsigned char>& vchRet) const
{
return GetOp2(pc, opcodeRet, &vchRet);
}
bool GetOp(const_iterator& pc, opcodetype& opcodeRet) const
{
return GetOp2(pc, opcodeRet, NULL);
}
bool GetOp2(const_iterator& pc, opcodetype& opcodeRet, std::vector<unsigned char>* pvchRet) const
{
opcodeRet = OP_INVALIDOPCODE;
if (pvchRet)
pvchRet->clear();
if (pc >= end())
return false;
// Read instruction
if (end() - pc < 1)
return false;
unsigned int opcode = *pc++;
// Immediate operand
if (opcode <= OP_PUSHDATA4)
{
unsigned int nSize = 0;
if (opcode < OP_PUSHDATA1)
{
nSize = opcode;
}
else if (opcode == OP_PUSHDATA1)
{
if (end() - pc < 1)
return false;
nSize = *pc++;
}
else if (opcode == OP_PUSHDATA2)
{
if (end() - pc < 2)
return false;
nSize = 0;
memcpy(&nSize, &pc[0], 2);
pc += 2;
}
else if (opcode == OP_PUSHDATA4)
{
if (end() - pc < 4)
return false;
memcpy(&nSize, &pc[0], 4);
pc += 4;
}
if (end() - pc < 0 || (unsigned int)(end() - pc) < nSize)
return false;
if (pvchRet)
pvchRet->assign(pc, pc + nSize);
pc += nSize;
}
opcodeRet = (opcodetype)opcode;
return true;
}
// Encode/decode small integers:
static int DecodeOP_N(opcodetype opcode)
{
if (opcode == OP_0)
return 0;
assert(opcode >= OP_1 && opcode <= OP_16);
return (int)opcode - (int)(OP_1 - 1);
}
static opcodetype EncodeOP_N(int n)
{
assert(n >= 0 && n <= 16);
if (n == 0)
return OP_0;
return (opcodetype)(OP_1+n-1);
}
int FindAndDelete(const CScript& b)
{
int nFound = 0;
if (b.empty())
return nFound;
iterator pc = begin();
opcodetype opcode;
do
{
while (end() - pc >= (long)b.size() && memcmp(&pc[0], &b[0], b.size()) == 0)
{
erase(pc, pc + b.size());
++nFound;
}
}
while (GetOp(pc, opcode));
return nFound;
}
int Find(opcodetype op) const
{
int nFound = 0;
opcodetype opcode;
for (const_iterator pc = begin(); pc != end() && GetOp(pc, opcode);)
if (opcode == op)
++nFound;
return nFound;
}
// Pre-version-0.6, Bitcoin always counted CHECKMULTISIGs
// as 20 sigops. With pay-to-script-hash, that changed:
// CHECKMULTISIGs serialized in scriptSigs are
// counted more accurately, assuming they are of the form
// ... OP_N CHECKMULTISIG ...
unsigned int GetSigOpCount(bool fAccurate) const;
// Accurately count sigOps, including sigOps in
// pay-to-script-hash transactions:
unsigned int GetSigOpCount(const CScript& scriptSig) const;
bool IsPayToScriptHash() const;
// Called by IsStandardTx and P2SH VerifyScript (which makes it consensus-critical).
bool IsPushOnly() const;
// Called by IsStandardTx.
bool HasCanonicalPushes() const;
// Returns whether the script is guaranteed to fail at execution,
// regardless of the initial stack. This allows outputs to be pruned
// instantly when entering the UTXO set.
bool IsUnspendable() const
{
return (size() > 0 && *begin() == OP_RETURN);
}
void SetDestination(const CTxDestination& address);
void SetMultisig(int nRequired, const std::vector<CPubKey>& keys);
std::string ToString() const
{
std::string str;
opcodetype opcode;
std::vector<unsigned char> vch;
const_iterator pc = begin();
while (pc < end())
{
if (!str.empty())
str += " ";
if (!GetOp(pc, opcode, vch))
{
str += "[error]";
return str;
}
if (0 <= opcode && opcode <= OP_PUSHDATA4)
str += ValueString(vch);
else
str += GetOpName(opcode);
}
return str;
}
CScriptID GetID() const
{
return CScriptID(Hash160(*this));
}
void clear()
{
// The default std::vector::clear() does not release memory.
std::vector<unsigned char>().swap(*this);
}
};
/** Compact serializer for scripts.
*
* It detects common cases and encodes them much more efficiently.

2
src/test/base58_tests.cpp
View File

@ -9,7 +9,7 @@
#include "data/base58_keys_valid.json.h"
#include "key.h"
#include "scriptutils.h"
#include "script/script.h"
#include "uint256.h"
#include "util.h"

2
src/test/key_tests.cpp
View File

@ -5,7 +5,7 @@
#include "key.h"
#include "base58.h"
#include "scriptutils.h"
#include "script/script.h"
#include "uint256.h"
#include "util.h"

1
src/test/multisig_tests.cpp
View File

@ -5,6 +5,7 @@
#include "key.h"
#include "keystore.h"
#include "main.h"
#include "script/script.h"
#include "scriptutils.h"
#include "uint256.h"

1
src/test/script_P2SH_tests.cpp
View File

@ -5,6 +5,7 @@
#include "key.h"
#include "keystore.h"
#include "main.h"
#include "script/script.h"
#include "scriptutils.h"
#include <vector>

1
src/test/script_tests.cpp
View File

@ -8,6 +8,7 @@
#include "key.h"
#include "keystore.h"
#include "main.h"
#include "script/script.h"
#include "scriptutils.h"
#include "core_io.h"

2
src/test/scriptnum_tests.cpp
View File

@ -3,7 +3,7 @@
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "bignum.h"
#include "scriptutils.h"
#include "script/script.h"
#include <boost/test/unit_test.hpp>
#include <limits.h>
#include <stdint.h>

1
src/test/sighash_tests.cpp
View File

@ -6,6 +6,7 @@
#include "main.h"
#include "random.h"
#include "serialize.h"
#include "script/script.h"
#include "scriptutils.h"
#include "util.h"
#include "version.h"

2
src/test/sigopcount_tests.cpp
View File

@ -3,7 +3,7 @@
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "key.h"
#include "scriptutils.h"
#include "script/script.h"
#include "uint256.h"
#include <vector>

2
src/test/transaction_tests.cpp
View File

@ -8,7 +8,7 @@
#include "key.h"
#include "keystore.h"
#include "main.h"
#include "scriptutils.h"
#include "script/script.h"
#include "core_io.h"
#include <map>