mirror of
https://github.com/dashpay/dash.git
synced 2024-12-28 13:32:47 +01:00
572 lines
14 KiB
C++
572 lines
14 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
|
// Copyright (c) 2009-2012 The Bitcoin developers
|
|
// Distributed under the MIT/X11 software license, see the accompanying
|
|
// file license.txt or http://www.opensource.org/licenses/mit-license.php.
|
|
#ifndef H_BITCOIN_SCRIPT
|
|
#define H_BITCOIN_SCRIPT
|
|
|
|
#include "base58.h"
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include <boost/foreach.hpp>
|
|
|
|
class CTransaction;
|
|
class CKeyStore;
|
|
|
|
enum
|
|
{
|
|
SIGHASH_ALL = 1,
|
|
SIGHASH_NONE = 2,
|
|
SIGHASH_SINGLE = 3,
|
|
SIGHASH_ANYONECANPAY = 0x80,
|
|
};
|
|
|
|
|
|
enum txnouttype
|
|
{
|
|
TX_NONSTANDARD,
|
|
// 'standard' transaction types:
|
|
TX_PUBKEY,
|
|
TX_PUBKEYHASH,
|
|
TX_SCRIPTHASH,
|
|
TX_MULTISIG,
|
|
};
|
|
|
|
const char* GetTxnOutputType(txnouttype t);
|
|
|
|
enum opcodetype
|
|
{
|
|
// push value
|
|
OP_0=0,
|
|
OP_FALSE=OP_0,
|
|
OP_PUSHDATA1=76,
|
|
OP_PUSHDATA2,
|
|
OP_PUSHDATA4,
|
|
OP_1NEGATE,
|
|
OP_RESERVED,
|
|
OP_1,
|
|
OP_TRUE=OP_1,
|
|
OP_2,
|
|
OP_3,
|
|
OP_4,
|
|
OP_5,
|
|
OP_6,
|
|
OP_7,
|
|
OP_8,
|
|
OP_9,
|
|
OP_10,
|
|
OP_11,
|
|
OP_12,
|
|
OP_13,
|
|
OP_14,
|
|
OP_15,
|
|
OP_16,
|
|
|
|
// control
|
|
OP_NOP,
|
|
OP_VER,
|
|
OP_IF,
|
|
OP_NOTIF,
|
|
OP_VERIF,
|
|
OP_VERNOTIF,
|
|
OP_ELSE,
|
|
OP_ENDIF,
|
|
OP_VERIFY,
|
|
OP_RETURN,
|
|
|
|
// stack ops
|
|
OP_TOALTSTACK,
|
|
OP_FROMALTSTACK,
|
|
OP_2DROP,
|
|
OP_2DUP,
|
|
OP_3DUP,
|
|
OP_2OVER,
|
|
OP_2ROT,
|
|
OP_2SWAP,
|
|
OP_IFDUP,
|
|
OP_DEPTH,
|
|
OP_DROP,
|
|
OP_DUP,
|
|
OP_NIP,
|
|
OP_OVER,
|
|
OP_PICK,
|
|
OP_ROLL,
|
|
OP_ROT,
|
|
OP_SWAP,
|
|
OP_TUCK,
|
|
|
|
// splice ops
|
|
OP_CAT,
|
|
OP_SUBSTR,
|
|
OP_LEFT,
|
|
OP_RIGHT,
|
|
OP_SIZE,
|
|
|
|
// bit logic
|
|
OP_INVERT,
|
|
OP_AND,
|
|
OP_OR,
|
|
OP_XOR,
|
|
OP_EQUAL,
|
|
OP_EQUALVERIFY,
|
|
OP_RESERVED1,
|
|
OP_RESERVED2,
|
|
|
|
// numeric
|
|
OP_1ADD,
|
|
OP_1SUB,
|
|
OP_2MUL,
|
|
OP_2DIV,
|
|
OP_NEGATE,
|
|
OP_ABS,
|
|
OP_NOT,
|
|
OP_0NOTEQUAL,
|
|
|
|
OP_ADD,
|
|
OP_SUB,
|
|
OP_MUL,
|
|
OP_DIV,
|
|
OP_MOD,
|
|
OP_LSHIFT,
|
|
OP_RSHIFT,
|
|
|
|
OP_BOOLAND,
|
|
OP_BOOLOR,
|
|
OP_NUMEQUAL,
|
|
OP_NUMEQUALVERIFY,
|
|
OP_NUMNOTEQUAL,
|
|
OP_LESSTHAN,
|
|
OP_GREATERTHAN,
|
|
OP_LESSTHANOREQUAL,
|
|
OP_GREATERTHANOREQUAL,
|
|
OP_MIN,
|
|
OP_MAX,
|
|
|
|
OP_WITHIN,
|
|
|
|
// crypto
|
|
OP_RIPEMD160,
|
|
OP_SHA1,
|
|
OP_SHA256,
|
|
OP_HASH160,
|
|
OP_HASH256,
|
|
OP_CODESEPARATOR,
|
|
OP_CHECKSIG,
|
|
OP_CHECKSIGVERIFY,
|
|
OP_CHECKMULTISIG,
|
|
OP_CHECKMULTISIGVERIFY,
|
|
|
|
// expansion
|
|
OP_NOP1,
|
|
OP_NOP2,
|
|
OP_NOP3,
|
|
OP_NOP4,
|
|
OP_NOP5,
|
|
OP_NOP6,
|
|
OP_NOP7,
|
|
OP_NOP8,
|
|
OP_NOP9,
|
|
OP_NOP10,
|
|
|
|
|
|
|
|
// template matching params
|
|
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", CBigNum(vch).getint());
|
|
else
|
|
return HexStr(vch);
|
|
}
|
|
|
|
inline std::string StackString(const std::vector<std::vector<unsigned char> >& vStack)
|
|
{
|
|
std::string str;
|
|
BOOST_FOREACH(const std::vector<unsigned char>& vch, vStack)
|
|
{
|
|
if (!str.empty())
|
|
str += " ";
|
|
str += ValueString(vch);
|
|
}
|
|
return str;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class CScript : public std::vector<unsigned char>
|
|
{
|
|
protected:
|
|
CScript& push_int64(int64 n)
|
|
{
|
|
if (n == -1 || (n >= 1 && n <= 16))
|
|
{
|
|
push_back(n + (OP_1 - 1));
|
|
}
|
|
else
|
|
{
|
|
CBigNum bn(n);
|
|
*this << bn.getvch();
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
CScript& push_uint64(uint64 n)
|
|
{
|
|
if (n >= 1 && n <= 16)
|
|
{
|
|
push_back(n + (OP_1 - 1));
|
|
}
|
|
else
|
|
{
|
|
CBigNum bn(n);
|
|
*this << bn.getvch();
|
|
}
|
|
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;
|
|
}
|
|
|
|
|
|
explicit CScript(char b) { operator<<(b); }
|
|
explicit CScript(short b) { operator<<(b); }
|
|
explicit CScript(int b) { operator<<(b); }
|
|
explicit CScript(long b) { operator<<(b); }
|
|
explicit CScript(int64 b) { operator<<(b); }
|
|
explicit CScript(unsigned char b) { operator<<(b); }
|
|
explicit CScript(unsigned int b) { operator<<(b); }
|
|
explicit CScript(unsigned short b) { operator<<(b); }
|
|
explicit CScript(unsigned long b) { operator<<(b); }
|
|
explicit CScript(uint64 b) { operator<<(b); }
|
|
|
|
explicit CScript(opcodetype b) { operator<<(b); }
|
|
explicit CScript(const uint256& b) { operator<<(b); }
|
|
explicit CScript(const CBigNum& b) { operator<<(b); }
|
|
explicit CScript(const std::vector<unsigned char>& b) { operator<<(b); }
|
|
|
|
|
|
CScript& operator<<(char b) { return push_int64(b); }
|
|
CScript& operator<<(short b) { return push_int64(b); }
|
|
CScript& operator<<(int b) { return push_int64(b); }
|
|
CScript& operator<<(long b) { return push_int64(b); }
|
|
CScript& operator<<(int64 b) { return push_int64(b); }
|
|
CScript& operator<<(unsigned char b) { return push_uint64(b); }
|
|
CScript& operator<<(unsigned int b) { return push_uint64(b); }
|
|
CScript& operator<<(unsigned short b) { return push_uint64(b); }
|
|
CScript& operator<<(unsigned long b) { return push_uint64(b); }
|
|
CScript& operator<<(uint64 b) { return push_uint64(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 CBigNum& 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;
|
|
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 < 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 >= 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 ...
|
|
int GetSigOpCount(bool fAccurate) const;
|
|
|
|
// Accurately count sigOps, including sigOps in
|
|
// pay-to-script-hash transactions:
|
|
int GetSigOpCount(const CScript& scriptSig) const;
|
|
|
|
bool IsPayToScriptHash() const;
|
|
|
|
// Called by CTransaction::IsStandard
|
|
bool IsPushOnly() const
|
|
{
|
|
const_iterator pc = begin();
|
|
while (pc < end())
|
|
{
|
|
opcodetype opcode;
|
|
if (!GetOp(pc, opcode))
|
|
return false;
|
|
if (opcode > OP_16)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
void SetBitcoinAddress(const CBitcoinAddress& address);
|
|
void SetBitcoinAddress(const std::vector<unsigned char>& vchPubKey)
|
|
{
|
|
SetBitcoinAddress(CBitcoinAddress(vchPubKey));
|
|
}
|
|
void SetMultisig(int nRequired, const std::vector<CKey>& keys);
|
|
void SetPayToScriptHash(const CScript& subscript);
|
|
|
|
|
|
void PrintHex() const
|
|
{
|
|
printf("CScript(%s)\n", HexStr(begin(), end(), true).c_str());
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
void print() const
|
|
{
|
|
printf("%s\n", ToString().c_str());
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, const CTransaction& txTo, unsigned int nIn, int nHashType);
|
|
bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<std::vector<unsigned char> >& vSolutionsRet);
|
|
int ScriptSigArgsExpected(txnouttype t, const std::vector<std::vector<unsigned char> >& vSolutions);
|
|
bool IsStandard(const CScript& scriptPubKey);
|
|
bool IsMine(const CKeyStore& keystore, const CScript& scriptPubKey);
|
|
bool ExtractAddress(const CScript& scriptPubKey, CBitcoinAddress& addressRet);
|
|
bool ExtractAddresses(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<CBitcoinAddress>& addressRet, int& nRequiredRet);
|
|
bool SignSignature(const CKeyStore& keystore, const CTransaction& txFrom, CTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL);
|
|
bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, bool fValidatePayToScriptHash, int nHashType);
|
|
|
|
#endif
|