#include <script/interpreter.h>
#include <uint256.h>
#include <boost/variant.hpp>

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Classes
class	CScriptID
	A reference to a CScript: the Hash160 of its serialization (see script.h) More...

class	CNoDestination

struct	PKHash

struct	ScriptHash

struct	WitnessV0ScriptHash

struct	WitnessV0KeyHash

struct	WitnessUnknown
	CTxDestination subtype to encode any future Witness version. More...

Typedefs
typedef boost::variant< CNoDestination, PKHash, ScriptHash, WitnessV0ScriptHash, WitnessV0KeyHash, WitnessUnknown >	CTxDestination
	A txout script template with a specific destination. More...

Enumerations
enum	txnouttype { TX_NONSTANDARD, TX_PUBKEY, TX_PUBKEYHASH, TX_SCRIPTHASH, TX_MULTISIG, TX_NULL_DATA, TX_WITNESS_V0_SCRIPTHASH, TX_WITNESS_V0_KEYHASH, TX_WITNESS_UNKNOWN }

Functions
bool	IsValidDestination (const CTxDestination &dest)
	Check whether a CTxDestination is a CNoDestination. More...

const char *	GetTxnOutputType (txnouttype t)
	Get the name of a txnouttype as a C string, or nullptr if unknown. More...

txnouttype	Solver (const CScript &scriptPubKey, std::vector< std::vector< unsigned char >> &vSolutionsRet)
	Parse a scriptPubKey and identify script type for standard scripts. More...

bool	ExtractDestination (const CScript &scriptPubKey, CTxDestination &addressRet)
	Parse a standard scriptPubKey for the destination address. More...

bool	ExtractDestinations (const CScript &scriptPubKey, txnouttype &typeRet, std::vector< CTxDestination > &addressRet, int &nRequiredRet)
	Parse a standard scriptPubKey with one or more destination addresses. More...

CScript	GetScriptForDestination (const CTxDestination &dest)
	Generate a Bitcoin scriptPubKey for the given CTxDestination. More...

CScript	GetScriptForRawPubKey (const CPubKey &pubkey)
	Generate a P2PK script for the given pubkey. More...

CScript	GetScriptForMultisig (int nRequired, const std::vector< CPubKey > &keys)
	Generate a multisig script. More...

CScript	GetScriptForWitness (const CScript &redeemscript)
	Generate a pay-to-witness script for the given redeem script. More...

Variables
static const bool	DEFAULT_ACCEPT_DATACARRIER = true

static const unsigned int	MAX_OP_RETURN_RELAY = 83
	Default setting for nMaxDatacarrierBytes. More...

bool	fAcceptDatacarrier
	A data carrying output is an unspendable output containing data. More...

unsigned	nMaxDatacarrierBytes
	Maximum size of TX_NULL_DATA scripts that this node considers standard. More...

static const unsigned int	MANDATORY_SCRIPT_VERIFY_FLAGS = SCRIPT_VERIFY_P2SH
	Mandatory script verification flags that all new blocks must comply with for them to be valid. More...

Typedef Documentation

◆ CTxDestination

typedef boost::variant<CNoDestination, PKHash, ScriptHash, WitnessV0ScriptHash, WitnessV0KeyHash, WitnessUnknown> CTxDestination

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???) A CTxDestination is the internal data type encoded in a bitcoin address

Definition at line 143 of file standard.h.

Enumeration Type Documentation

◆ txnouttype

enum txnouttype

Enumerator
TX_NONSTANDARD
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.

Definition at line 55 of file standard.h.

Function Documentation

◆ ExtractDestination()

bool ExtractDestination	(	const CScript &	scriptPubKey,
		CTxDestination &	addressRet
	)

Parse a standard scriptPubKey for the destination address.

Assigns result to the addressRet parameter and returns true if successful. For multisig scripts, instead use ExtractDestinations. Currently only works for P2PK, P2PKH, P2SH, P2WPKH, and P2WSH scripts.

Definition at line 156 of file standard.cpp.

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◆ ExtractDestinations()

bool ExtractDestinations	(	const CScript &	scriptPubKey,
		txnouttype &	typeRet,
		std::vector< CTxDestination > &	addressRet,
		int &	nRequiredRet
	)

Parse a standard scriptPubKey with one or more destination addresses.

For multisig scripts, this populates the addressRet vector with the pubkey IDs and nRequiredRet with the n required to spend. For other destinations, addressRet is populated with a single value and nRequiredRet is set to 1. Returns true if successful.

Note: this function confuses destinations (a subset of CScripts that are encodable as an address) with key identifiers (of keys involved in a CScript), and its use should be phased out.

Definition at line 200 of file standard.cpp.

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◆ GetScriptForDestination()

CScript GetScriptForDestination ( const CTxDestination & dest )

Generate a Bitcoin scriptPubKey for the given CTxDestination.

Returns a P2PKH script for a CKeyID destination, a P2SH script for a CScriptID, and an empty script for CNoDestination.

Definition at line 289 of file standard.cpp.

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◆ GetScriptForMultisig()

CScript GetScriptForMultisig	(	int	nRequired,
		const std::vector< CPubKey > &	keys
	)

Generate a multisig script.

Definition at line 302 of file standard.cpp.

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◆ GetScriptForRawPubKey()

CScript GetScriptForRawPubKey ( const CPubKey & pubkey )

Generate a P2PK script for the given pubkey.

Definition at line 297 of file standard.cpp.

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◆ GetScriptForWitness()

CScript GetScriptForWitness ( const CScript & redeemscript )

Generate a pay-to-witness script for the given redeem script.

If the redeem script is P2PK or P2PKH, this returns a P2WPKH script, otherwise it returns a P2WSH script.

TODO: replace calls to GetScriptForWitness with GetScriptForDestination using the various witness-specific CTxDestination subtypes.

Definition at line 313 of file standard.cpp.

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◆ GetTxnOutputType()

const char* GetTxnOutputType ( txnouttype t )

Get the name of a txnouttype as a C string, or nullptr if unknown.

Definition at line 28 of file standard.cpp.

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◆ IsValidDestination()

bool IsValidDestination ( const CTxDestination & dest )

Check whether a CTxDestination is a CNoDestination.

Definition at line 325 of file standard.cpp.

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◆ Solver()

txnouttype Solver	(	const CScript &	scriptPubKey,
		std::vector< std::vector< unsigned char >> &	vSolutionsRet
	)

Parse a scriptPubKey and identify script type for standard scripts.

If successful, returns script type and parsed pubkeys or hashes, depending on the type. For example, for a P2SH script, vSolutionsRet will contain the script hash, for P2PKH it will contain the key hash, etc.

Parameters

[in]	scriptPubKey	Script to parse
[out]	vSolutionsRet	Vector of parsed pubkeys and hashes

Returns: The script type. TX_NONSTANDARD represents a failed solve.

Definition at line 91 of file standard.cpp.

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Variable Documentation

◆ DEFAULT_ACCEPT_DATACARRIER

const bool DEFAULT_ACCEPT_DATACARRIER = true

static

Definition at line 15 of file standard.h.

◆ fAcceptDatacarrier

bool fAcceptDatacarrier

A data carrying output is an unspendable output containing data.

The script type is designated as TX_NULL_DATA.

Definition at line 14 of file standard.cpp.

◆ MANDATORY_SCRIPT_VERIFY_FLAGS

const unsigned int MANDATORY_SCRIPT_VERIFY_FLAGS = SCRIPT_VERIFY_P2SH

static

Mandatory script verification flags that all new blocks must comply with for them to be valid.

(but old blocks may not comply with) Currently just P2SH, but in the future other flags may be added, such as a soft-fork to enforce strict DER encoding.

Failing one of these tests may trigger a DoS ban - see CheckInputScripts() for details.

Definition at line 53 of file standard.h.

◆ MAX_OP_RETURN_RELAY

const unsigned int MAX_OP_RETURN_RELAY = 83

static

Default setting for nMaxDatacarrierBytes.

80 bytes of data, +1 for OP_RETURN, +2 for the pushdata opcodes.

Definition at line 33 of file standard.h.

◆ nMaxDatacarrierBytes

unsigned nMaxDatacarrierBytes

Maximum size of TX_NULL_DATA scripts that this node considers standard.

Definition at line 15 of file standard.cpp.

Classes

Typedefs

Enumerations

Functions

Variables

Typedef Documentation

◆ CTxDestination

Enumeration Type Documentation

◆ txnouttype

Function Documentation

◆ ExtractDestination()

◆ ExtractDestinations()

◆ GetScriptForDestination()

◆ GetScriptForMultisig()

◆ GetScriptForRawPubKey()

◆ GetScriptForWitness()

◆ GetTxnOutputType()

◆ IsValidDestination()

◆ Solver()

Variable Documentation

◆ DEFAULT_ACCEPT_DATACARRIER

◆ fAcceptDatacarrier

◆ MANDATORY_SCRIPT_VERIFY_FLAGS

◆ MAX_OP_RETURN_RELAY

◆ nMaxDatacarrierBytes