diff options
Diffstat (limited to 'src/script.h')
| -rw-r--r-- | src/script.h | 228 |
1 files changed, 43 insertions, 185 deletions
diff --git a/src/script.h b/src/script.h index 7f4aaae2d5..bbc6498fbb 100644 --- a/src/script.h +++ b/src/script.h @@ -1,12 +1,11 @@ // Copyright (c) 2009-2010 Satoshi Nakamoto -// Copyright (c) 2011 The Bitcoin developers +// Copyright (c) 2009-2012 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 "base58.h" -#include "keystore.h" #include <string> #include <vector> @@ -14,7 +13,9 @@ #include <boost/foreach.hpp> class CTransaction; +class CKeyStore; +/** Signature hash types/flags */ enum { SIGHASH_ALL = 1, @@ -24,7 +25,19 @@ enum }; +enum txnouttype +{ + TX_NONSTANDARD, + // 'standard' transaction types: + TX_PUBKEY, + TX_PUBKEYHASH, + TX_SCRIPTHASH, + TX_MULTISIG, +}; +const char* GetTxnOutputType(txnouttype t); + +/** Script opcodes */ enum opcodetype { // push value @@ -162,162 +175,15 @@ enum opcodetype // template matching params + OP_SMALLINTEGER = 0xfa, + OP_PUBKEYS = 0xfb, OP_PUBKEYHASH = 0xfd, OP_PUBKEY = 0xfe, OP_INVALIDOPCODE = 0xff, }; - - - - - - - -inline 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"; - - - - // template matching params - case OP_PUBKEYHASH : return "OP_PUBKEYHASH"; - case OP_PUBKEY : return "OP_PUBKEY"; - - case OP_INVALIDOPCODE : return "OP_INVALIDOPCODE"; - default: - return "OP_UNKNOWN"; - } -}; - +const char* GetOpName(opcodetype opcode); @@ -348,7 +214,7 @@ inline std::string StackString(const std::vector<std::vector<unsigned char> >& v - +/** Serialized script, used inside transaction inputs and outputs */ class CScript : public std::vector<unsigned char> { protected: @@ -584,19 +450,31 @@ public: 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); + } - void FindAndDelete(const CScript& b) + int FindAndDelete(const CScript& b) { + int nFound = 0; if (b.empty()) - return; + 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 { @@ -613,7 +491,7 @@ public: // CHECKMULTISIGs serialized in scriptSigs are // counted more accurately, assuming they are of the form // ... OP_N CHECKMULTISIG ... - int GetSigOpCount(bool fAccurate=false) const; + int GetSigOpCount(bool fAccurate) const; // Accurately count sigOps, including sigOps in // pay-to-script-hash transactions: @@ -621,6 +499,7 @@ public: bool IsPayToScriptHash() const; + // Called by CTransaction::IsStandard bool IsPushOnly() const { const_iterator pc = begin(); @@ -636,34 +515,13 @@ public: } - CBitcoinAddress GetBitcoinAddress() const - { - opcodetype opcode; - std::vector<unsigned char> vch; - CScript::const_iterator pc = begin(); - if (!GetOp(pc, opcode, vch) || opcode != OP_DUP) return 0; - if (!GetOp(pc, opcode, vch) || opcode != OP_HASH160) return 0; - if (!GetOp(pc, opcode, vch) || vch.size() != sizeof(uint160)) return 0; - uint160 hash160 = uint160(vch); - if (!GetOp(pc, opcode, vch) || opcode != OP_EQUALVERIFY) return 0; - if (!GetOp(pc, opcode, vch) || opcode != OP_CHECKSIG) return 0; - if (pc != end()) return 0; - return CBitcoinAddress(hash160); - } - - void SetBitcoinAddress(const CBitcoinAddress& address) - { - this->clear(); - if (address.IsScript()) - *this << OP_HASH160 << address.GetHash160() << OP_EQUAL; - else - *this << OP_DUP << OP_HASH160 << address.GetHash160() << OP_EQUALVERIFY << OP_CHECKSIG; - } - + 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 @@ -704,14 +562,14 @@ public: - - 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, const CKeyStore* pkeystore, CBitcoinAddress& addressRet); -bool SignSignature(const CKeyStore& keystore, const CTransaction& txFrom, CTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL, CScript scriptPrereq=CScript()); +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 |