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92 lines
3.4 KiB
92 lines
3.4 KiB
// Copyright (c) 2009-2010 Satoshi Nakamoto |
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// Copyright (c) 2009-2014 The Bitcoin developers |
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// Distributed under the MIT software license, see the accompanying |
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// file COPYING or http://www.opensource.org/licenses/mit-license.php. |
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#ifndef BITCOIN_SCRIPT_STANDARD_H |
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#define BITCOIN_SCRIPT_STANDARD_H |
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#include "script/interpreter.h" |
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#include "uint256.h" |
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#include <boost/variant.hpp> |
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#include <stdint.h> |
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class CKeyID; |
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class CScript; |
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/** A reference to a CScript: the Hash160 of its serialization (see script.h) */ |
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class CScriptID : public uint160 |
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{ |
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public: |
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CScriptID() : uint160(0) {} |
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CScriptID(const CScript& in); |
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CScriptID(const uint160& in) : uint160(in) {} |
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}; |
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static const unsigned int MAX_OP_RETURN_RELAY = 40; //! bytes |
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extern unsigned nMaxDatacarrierBytes; |
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/** |
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* Mandatory script verification flags that all new blocks must comply with for |
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* them to be valid. (but old blocks may not comply with) Currently just P2SH, |
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* but in the future other flags may be added, such as a soft-fork to enforce |
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* strict DER encoding. |
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* |
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* Failing one of these tests may trigger a DoS ban - see CheckInputs() for |
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* details. |
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*/ |
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static const unsigned int MANDATORY_SCRIPT_VERIFY_FLAGS = SCRIPT_VERIFY_P2SH; |
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/** |
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* Standard script verification flags that standard transactions will comply |
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* with. However scripts violating these flags may still be present in valid |
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* blocks and we must accept those blocks. |
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*/ |
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static const unsigned int STANDARD_SCRIPT_VERIFY_FLAGS = MANDATORY_SCRIPT_VERIFY_FLAGS | |
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SCRIPT_VERIFY_STRICTENC | |
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SCRIPT_VERIFY_MINIMALDATA | |
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SCRIPT_VERIFY_NULLDUMMY; |
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/** For convenience, standard but not mandatory verify flags. */ |
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static const unsigned int STANDARD_NOT_MANDATORY_VERIFY_FLAGS = STANDARD_SCRIPT_VERIFY_FLAGS & ~MANDATORY_SCRIPT_VERIFY_FLAGS; |
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enum txnouttype |
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{ |
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TX_NONSTANDARD, |
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// 'standard' transaction types: |
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TX_PUBKEY, |
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TX_PUBKEYHASH, |
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TX_SCRIPTHASH, |
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TX_MULTISIG, |
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TX_NULL_DATA, |
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}; |
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class CNoDestination { |
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public: |
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friend bool operator==(const CNoDestination &a, const CNoDestination &b) { return true; } |
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friend bool operator<(const CNoDestination &a, const CNoDestination &b) { return true; } |
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}; |
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/** |
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* A txout script template with a specific destination. It is either: |
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* * CNoDestination: no destination set |
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* * CKeyID: TX_PUBKEYHASH destination |
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* * CScriptID: TX_SCRIPTHASH destination |
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* A CTxDestination is the internal data type encoded in a CBitcoinAddress |
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*/ |
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typedef boost::variant<CNoDestination, CKeyID, CScriptID> CTxDestination; |
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const char* GetTxnOutputType(txnouttype t); |
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bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<std::vector<unsigned char> >& vSolutionsRet); |
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int ScriptSigArgsExpected(txnouttype t, const std::vector<std::vector<unsigned char> >& vSolutions); |
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bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType); |
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bool ExtractDestination(const CScript& scriptPubKey, CTxDestination& addressRet); |
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bool ExtractDestinations(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<CTxDestination>& addressRet, int& nRequiredRet); |
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CScript GetScriptForDestination(const CTxDestination& dest); |
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CScript GetScriptForMultisig(int nRequired, const std::vector<CPubKey>& keys); |
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#endif // BITCOIN_SCRIPT_STANDARD_H
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