interpreter.h File Reference

#include <script/script_error.h>
#include <primitives/transaction.h>
#include <vector>
#include <stdint.h>
#include <string>

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Classes
struct	PrecomputedTransactionData
class	BaseSignatureChecker
class	TransactionSignatureChecker
class	MutableTransactionSignatureChecker

Enumerations
enum	{ SIGHASH_ALL = 1, SIGHASH_NONE = 2, SIGHASH_SINGLE = 3, SIGHASH_ANYONECANPAY = 0x80 }
	Signature hash types/flags. More...
enum	{   SCRIPT_VERIFY_NONE = 0, SCRIPT_VERIFY_P2SH = (1U << 0), SCRIPT_VERIFY_STRICTENC = (1U << 1), SCRIPT_VERIFY_DERSIG = (1U << 2),   SCRIPT_VERIFY_LOW_S = (1U << 3), SCRIPT_VERIFY_NULLDUMMY = (1U << 4), SCRIPT_VERIFY_SIGPUSHONLY = (1U << 5), SCRIPT_VERIFY_MINIMALDATA = (1U << 6),   SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS = (1U << 7), SCRIPT_VERIFY_CLEANSTACK = (1U << 8), SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY = (1U << 9), SCRIPT_VERIFY_CHECKSEQUENCEVERIFY = (1U << 10),   SCRIPT_VERIFY_NULLFAIL = (1U << 14) }
	Script verification flags. More...
enum	SigVersion { SIGVERSION_BASE = 0 }

Functions
bool	CheckSignatureEncoding (const std::vector< unsigned char > &vchSig, unsigned int flags, ScriptError *serror)
uint256	SignatureHash (const CScript &scriptCode, const CTransaction &txTo, unsigned int nIn, int nHashType, const CAmount &amount, SigVersion sigversion, const PrecomputedTransactionData *cache=nullptr)
bool	EvalScript (std::vector< std::vector< unsigned char > > &stack, const CScript &script, unsigned int flags, const BaseSignatureChecker &checker, SigVersion sigversion, ScriptError *error=nullptr)
bool	VerifyScript (const CScript &scriptSig, const CScript &scriptPubKey, unsigned int flags, const BaseSignatureChecker &checker, ScriptError *error=nullptr)

Enumeration Type Documentation

anonymous enum

anonymous enum

Signature hash types/flags.

Enumerator
SIGHASH_ALL
SIGHASH_NONE
SIGHASH_SINGLE
SIGHASH_ANYONECANPAY

Definition at line 22 of file interpreter.h.

anonymous enum

anonymous enum

Script verification flags.

All flags are intended to be soft forks: the set of acceptable scripts under flags (A | B) is a subset of the acceptable scripts under flag (A).

Enumerator
SCRIPT_VERIFY_NONE
SCRIPT_VERIFY_P2SH
SCRIPT_VERIFY_STRICTENC
SCRIPT_VERIFY_DERSIG
SCRIPT_VERIFY_LOW_S
SCRIPT_VERIFY_NULLDUMMY
SCRIPT_VERIFY_SIGPUSHONLY
SCRIPT_VERIFY_MINIMALDATA
SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS
SCRIPT_VERIFY_CLEANSTACK
SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY
SCRIPT_VERIFY_CHECKSEQUENCEVERIFY
SCRIPT_VERIFY_NULLFAIL

Definition at line 35 of file interpreter.h.

SigVersion

enum SigVersion

Enumerator
SIGVERSION_BASE

Definition at line 109 of file interpreter.h.

Function Documentation

CheckSignatureEncoding()

bool CheckSignatureEncoding	(	const std::vector< unsigned char > &	vchSig,
		unsigned int	flags,
		ScriptError *	serror
	)

Definition at line 188 of file interpreter.cpp.

References flags, IsDefinedHashtypeSignature(), IsLowDERSignature(), IsValidSignatureEncoding(), SCRIPT_ERR_SIG_DER, SCRIPT_ERR_SIG_HASHTYPE, SCRIPT_VERIFY_DERSIG, SCRIPT_VERIFY_LOW_S, and SCRIPT_VERIFY_STRICTENC.

Referenced by EvalScript(), and ScriptToAsmStr().

EvalScript()

bool EvalScript	(	std::vector< std::vector< unsigned char > > &	stack,
		const CScript &	script,
		unsigned int	flags,
		const BaseSignatureChecker &	checker,
		SigVersion	sigversion,
		ScriptError *	error = nullptr
	)

Definition at line 235 of file interpreter.cpp.

References altstacktop, prevector< N, T, Size, Diff >::begin(), CastToBool(), BaseSignatureChecker::CheckLockTime(), CheckMinimalPush(), CheckPubKeyEncoding(), BaseSignatureChecker::CheckSequence(), BaseSignatureChecker::CheckSig(), CheckSignatureEncoding(), count, prevector< N, T, Size, Diff >::end(), CScript::FindAndDelete(), flags, CScriptNum::getint(), CScript::GetOp(), CScriptNum::getvch(), MAX_OPS_PER_SCRIPT, MAX_PUBKEYS_PER_MULTISIG, MAX_SCRIPT_ELEMENT_SIZE, MAX_SCRIPT_SIZE, MAX_STACK_SIZE, OP_0NOTEQUAL, OP_1, OP_10, OP_11, OP_12, OP_13, OP_14, OP_15, OP_16, OP_1ADD, OP_1NEGATE, OP_1SUB, OP_2, OP_2DIV, OP_2DROP, OP_2DUP, OP_2MUL, OP_2OVER, OP_2ROT, OP_2SWAP, OP_3, OP_3DUP, OP_4, OP_5, OP_6, OP_7, OP_8, OP_9, OP_ABS, OP_ADD, OP_AND, OP_BOOLAND, OP_BOOLOR, OP_CAT, OP_CHECKLOCKTIMEVERIFY, OP_CHECKMULTISIG, OP_CHECKMULTISIGVERIFY, OP_CHECKSEQUENCEVERIFY, OP_CHECKSIG, OP_CHECKSIGVERIFY, OP_CODESEPARATOR, OP_DEPTH, OP_DIV, OP_DROP, OP_DUP, OP_ELSE, OP_ENDIF, OP_EQUAL, OP_EQUALVERIFY, OP_FROMALTSTACK, OP_GREATERTHAN, OP_GREATERTHANOREQUAL, OP_HASH160, OP_HASH256, OP_IF, OP_IFDUP, OP_INVERT, OP_LEFT, OP_LESSTHAN, OP_LESSTHANOREQUAL, OP_LSHIFT, OP_MAX, OP_MIN, OP_MOD, OP_MUL, OP_NEGATE, OP_NIP, OP_NOP, OP_NOP1, OP_NOP10, OP_NOP4, OP_NOP5, OP_NOP6, OP_NOP7, OP_NOP8, OP_NOP9, OP_NOT, OP_NOTIF, OP_NUMEQUAL, OP_NUMEQUALVERIFY, OP_NUMNOTEQUAL, OP_OR, OP_OVER, OP_PICK, OP_PUSHDATA4, OP_RETURN, OP_RIGHT, OP_RIPEMD160, OP_ROLL, OP_ROT, OP_RSHIFT, OP_SHA1, OP_SHA256, OP_SIZE, OP_SUB, OP_SUBSTR, OP_SWAP, OP_TOALTSTACK, OP_TUCK, OP_VERIFY, OP_WITHIN, OP_XOR, popstack(), SCRIPT_ERR_BAD_OPCODE, SCRIPT_ERR_CHECKMULTISIGVERIFY, SCRIPT_ERR_CHECKSIGVERIFY, SCRIPT_ERR_DISABLED_OPCODE, SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS, SCRIPT_ERR_EQUALVERIFY, SCRIPT_ERR_INVALID_ALTSTACK_OPERATION, SCRIPT_ERR_INVALID_STACK_OPERATION, SCRIPT_ERR_MINIMALDATA, SCRIPT_ERR_NEGATIVE_LOCKTIME, SCRIPT_ERR_NUMEQUALVERIFY, SCRIPT_ERR_OP_COUNT, SCRIPT_ERR_OP_RETURN, SCRIPT_ERR_PUBKEY_COUNT, SCRIPT_ERR_PUSH_SIZE, SCRIPT_ERR_SCRIPT_SIZE, SCRIPT_ERR_SIG_COUNT, SCRIPT_ERR_SIG_NULLDUMMY, SCRIPT_ERR_SIG_NULLFAIL, SCRIPT_ERR_STACK_SIZE, SCRIPT_ERR_UNBALANCED_CONDITIONAL, SCRIPT_ERR_UNKNOWN_ERROR, SCRIPT_ERR_UNSATISFIED_LOCKTIME, SCRIPT_ERR_VERIFY, SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY, SCRIPT_VERIFY_CHECKSEQUENCEVERIFY, SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS, SCRIPT_VERIFY_MINIMALDATA, SCRIPT_VERIFY_NULLDUMMY, SCRIPT_VERIFY_NULLFAIL, CTxIn::SEQUENCE_LOCKTIME_DISABLE_FLAG, SIGVERSION_BASE, prevector< N, T, Size, Diff >::size(), stacktop, CRIPEMD160::Write(), CSHA1::Write(), CSHA256::Write(), CHash256::Write(), and CHash160::Write().

Referenced by AreInputsStandard(), and VerifyScript().

SignatureHash()

uint256 SignatureHash	(	const CScript &	scriptCode,
		const CTransaction &	txTo,
		unsigned int	nIn,
		int	nHashType,
		const CAmount &	amount,
		SigVersion	sigversion,
		const PrecomputedTransactionData *	cache = nullptr
	)

Definition at line 1156 of file interpreter.cpp.

References CHashWriter::GetHash(), SER_GETHASH, SIGHASH_SINGLE, uint256S(), CTransaction::vin, and CTransaction::vout.

Referenced by TransactionSignatureChecker::CheckSig(), and TransactionSignatureCreator::CreateSig().

VerifyScript()

bool VerifyScript	(	const CScript &	scriptSig,
		const CScript &	scriptPubKey,
		unsigned int	flags,
		const BaseSignatureChecker &	checker,
		ScriptError *	error = nullptr
	)

Definition at line 1287 of file interpreter.cpp.

References CastToBool(), EvalScript(), flags, CScript::IsPayToScriptHash(), CScript::IsPushOnly(), popstack(), SCRIPT_ERR_CLEANSTACK, SCRIPT_ERR_EVAL_FALSE, SCRIPT_ERR_SIG_PUSHONLY, SCRIPT_ERR_UNKNOWN_ERROR, SCRIPT_VERIFY_CLEANSTACK, SCRIPT_VERIFY_P2SH, SCRIPT_VERIFY_SIGPUSHONLY, and SIGVERSION_BASE.

Referenced by dashconsensus_verify_script(), CPrivateSendServer::IsInputScriptSigValid(), MutateTxSign(), CScriptCheck::operator()(), ProduceSignature(), and signrawtransaction().