diff options
Diffstat (limited to 'src/script/standard.h')
| -rw-r--r-- | src/script/standard.h | 149 |
1 files changed, 107 insertions, 42 deletions
diff --git a/src/script/standard.h b/src/script/standard.h index 2929425670..fd29353886 100644 --- a/src/script/standard.h +++ b/src/script/standard.h @@ -18,14 +18,77 @@ static const bool DEFAULT_ACCEPT_DATACARRIER = true; class CKeyID; class CScript; +struct ScriptHash; + +template<typename HashType> +class BaseHash +{ +protected: + HashType m_hash; + +public: + BaseHash() : m_hash() {} + BaseHash(const HashType& in) : m_hash(in) {} + + unsigned char* begin() + { + return m_hash.begin(); + } + + const unsigned char* begin() const + { + return m_hash.begin(); + } + + unsigned char* end() + { + return m_hash.end(); + } + + const unsigned char* end() const + { + return m_hash.end(); + } + + operator std::vector<unsigned char>() const + { + return std::vector<unsigned char>{m_hash.begin(), m_hash.end()}; + } + + std::string ToString() const + { + return m_hash.ToString(); + } + + bool operator==(const BaseHash<HashType>& other) const noexcept + { + return m_hash == other.m_hash; + } + + bool operator!=(const BaseHash<HashType>& other) const noexcept + { + return !(m_hash == other.m_hash); + } + + bool operator<(const BaseHash<HashType>& other) const noexcept + { + return m_hash < other.m_hash; + } + + size_t size() const + { + return m_hash.size(); + } +}; /** A reference to a CScript: the Hash160 of its serialization (see script.h) */ -class CScriptID : public uint160 +class CScriptID : public BaseHash<uint160> { public: - CScriptID() : uint160() {} + CScriptID() : BaseHash() {} explicit CScriptID(const CScript& in); - CScriptID(const uint160& in) : uint160(in) {} + explicit CScriptID(const uint160& in) : BaseHash(in) {} + explicit CScriptID(const ScriptHash& in); }; /** @@ -36,11 +99,11 @@ static const unsigned int MAX_OP_RETURN_RELAY = 83; /** * A data carrying output is an unspendable output containing data. The script - * type is designated as TX_NULL_DATA. + * type is designated as TxoutType::NULL_DATA. */ extern bool fAcceptDatacarrier; -/** Maximum size of TX_NULL_DATA scripts that this node considers standard. */ +/** Maximum size of TxoutType::NULL_DATA scripts that this node considers standard. */ extern unsigned nMaxDatacarrierBytes; /** @@ -53,18 +116,17 @@ extern unsigned nMaxDatacarrierBytes; */ static const unsigned int MANDATORY_SCRIPT_VERIFY_FLAGS = SCRIPT_VERIFY_P2SH; -enum txnouttype -{ - TX_NONSTANDARD, +enum class TxoutType { + NONSTANDARD, // 'standard' transaction types: - TX_PUBKEY, - TX_PUBKEYHASH, - TX_SCRIPTHASH, - TX_MULTISIG, - TX_NULL_DATA, //!< unspendable OP_RETURN script that carries data - TX_WITNESS_V0_SCRIPTHASH, - TX_WITNESS_V0_KEYHASH, - TX_WITNESS_UNKNOWN, //!< Only for Witness versions not already defined above + PUBKEY, + PUBKEYHASH, + SCRIPTHASH, + MULTISIG, + NULL_DATA, //!< unspendable OP_RETURN script that carries data + WITNESS_V0_SCRIPTHASH, + WITNESS_V0_KEYHASH, + WITNESS_UNKNOWN, //!< Only for Witness versions not already defined above }; class CNoDestination { @@ -73,41 +135,44 @@ public: friend bool operator<(const CNoDestination &a, const CNoDestination &b) { return true; } }; -struct PKHash : public uint160 +struct PKHash : public BaseHash<uint160> { - PKHash() : uint160() {} - explicit PKHash(const uint160& hash) : uint160(hash) {} + PKHash() : BaseHash() {} + explicit PKHash(const uint160& hash) : BaseHash(hash) {} explicit PKHash(const CPubKey& pubkey); - using uint160::uint160; + explicit PKHash(const CKeyID& pubkey_id); }; +CKeyID ToKeyID(const PKHash& key_hash); struct WitnessV0KeyHash; -struct ScriptHash : public uint160 +struct ScriptHash : public BaseHash<uint160> { - ScriptHash() : uint160() {} + ScriptHash() : BaseHash() {} // These don't do what you'd expect. // Use ScriptHash(GetScriptForDestination(...)) instead. explicit ScriptHash(const WitnessV0KeyHash& hash) = delete; explicit ScriptHash(const PKHash& hash) = delete; - explicit ScriptHash(const uint160& hash) : uint160(hash) {} + + explicit ScriptHash(const uint160& hash) : BaseHash(hash) {} explicit ScriptHash(const CScript& script); - using uint160::uint160; + explicit ScriptHash(const CScriptID& script); }; -struct WitnessV0ScriptHash : public uint256 +struct WitnessV0ScriptHash : public BaseHash<uint256> { - WitnessV0ScriptHash() : uint256() {} - explicit WitnessV0ScriptHash(const uint256& hash) : uint256(hash) {} + WitnessV0ScriptHash() : BaseHash() {} + explicit WitnessV0ScriptHash(const uint256& hash) : BaseHash(hash) {} explicit WitnessV0ScriptHash(const CScript& script); - using uint256::uint256; }; -struct WitnessV0KeyHash : public uint160 +struct WitnessV0KeyHash : public BaseHash<uint160> { - WitnessV0KeyHash() : uint160() {} - explicit WitnessV0KeyHash(const uint160& hash) : uint160(hash) {} - using uint160::uint160; + WitnessV0KeyHash() : BaseHash() {} + explicit WitnessV0KeyHash(const uint160& hash) : BaseHash(hash) {} + explicit WitnessV0KeyHash(const CPubKey& pubkey); + explicit WitnessV0KeyHash(const PKHash& pubkey_hash); }; +CKeyID ToKeyID(const WitnessV0KeyHash& key_hash); //! CTxDestination subtype to encode any future Witness version struct WitnessUnknown @@ -134,11 +199,11 @@ struct WitnessUnknown /** * A txout script template with a specific destination. It is either: * * CNoDestination: no destination set - * * PKHash: TX_PUBKEYHASH destination (P2PKH) - * * ScriptHash: TX_SCRIPTHASH destination (P2SH) - * * WitnessV0ScriptHash: TX_WITNESS_V0_SCRIPTHASH destination (P2WSH) - * * WitnessV0KeyHash: TX_WITNESS_V0_KEYHASH destination (P2WPKH) - * * WitnessUnknown: TX_WITNESS_UNKNOWN destination (P2W???) + * * PKHash: TxoutType::PUBKEYHASH destination (P2PKH) + * * ScriptHash: TxoutType::SCRIPTHASH destination (P2SH) + * * WitnessV0ScriptHash: TxoutType::WITNESS_V0_SCRIPTHASH destination (P2WSH) + * * WitnessV0KeyHash: TxoutType::WITNESS_V0_KEYHASH destination (P2WPKH) + * * WitnessUnknown: TxoutType::WITNESS_UNKNOWN destination (P2W???) * A CTxDestination is the internal data type encoded in a bitcoin address */ typedef boost::variant<CNoDestination, PKHash, ScriptHash, WitnessV0ScriptHash, WitnessV0KeyHash, WitnessUnknown> CTxDestination; @@ -146,8 +211,8 @@ typedef boost::variant<CNoDestination, PKHash, ScriptHash, WitnessV0ScriptHash, /** Check whether a CTxDestination is a CNoDestination. */ bool IsValidDestination(const CTxDestination& dest); -/** Get the name of a txnouttype as a C string, or nullptr if unknown. */ -std::string GetTxnOutputType(txnouttype t); +/** Get the name of a TxoutType as a string */ +std::string GetTxnOutputType(TxoutType t); /** * Parse a scriptPubKey and identify script type for standard scripts. If @@ -157,9 +222,9 @@ std::string GetTxnOutputType(txnouttype t); * * @param[in] scriptPubKey Script to parse * @param[out] vSolutionsRet Vector of parsed pubkeys and hashes - * @return The script type. TX_NONSTANDARD represents a failed solve. + * @return The script type. TxoutType::NONSTANDARD represents a failed solve. */ -txnouttype Solver(const CScript& scriptPubKey, std::vector<std::vector<unsigned char>>& vSolutionsRet); +TxoutType Solver(const CScript& scriptPubKey, std::vector<std::vector<unsigned char>>& vSolutionsRet); /** * Parse a standard scriptPubKey for the destination address. Assigns result to @@ -180,7 +245,7 @@ bool ExtractDestination(const CScript& scriptPubKey, CTxDestination& addressRet) * encodable as an address) with key identifiers (of keys involved in a * CScript), and its use should be phased out. */ -bool ExtractDestinations(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<CTxDestination>& addressRet, int& nRequiredRet); +bool ExtractDestinations(const CScript& scriptPubKey, TxoutType& typeRet, std::vector<CTxDestination>& addressRet, int& nRequiredRet); /** * Generate a Bitcoin scriptPubKey for the given CTxDestination. Returns a P2PKH |