standard.cpp File Reference

#include <script/standard.h>
#include <crypto/sha256.h>
#include <pubkey.h>
#include <script/script.h>
#include <util.h>
#include <utilstrencodings.h>

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Typedefs
typedef std::vector< unsigned char >	valtype

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

Variables
bool	fAcceptDatacarrier = DEFAULT_ACCEPT_DATACARRIER
	A data carrying output is an unspendable output containing data. More...
unsigned	nMaxDatacarrierBytes = MAX_OP_RETURN_RELAY
	Maximum size of TX_NULL_DATA scripts that this node considers standard. More...

Typedef Documentation

valtype

typedef std::vector<unsigned char> valtype

Definition at line 15 of file standard.cpp.

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 155 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. Currently does not extract address from pay-to-witness scripts.

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 199 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 288 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 301 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 296 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 312 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 27 of file standard.cpp.

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IsValidDestination()

bool IsValidDestination

(

const CTxDestination &

dest

)

Check whether a CTxDestination is a CNoDestination.

Definition at line 324 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 90 of file standard.cpp.

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Variable Documentation

fAcceptDatacarrier

bool fAcceptDatacarrier = DEFAULT_ACCEPT_DATACARRIER

A data carrying output is an unspendable output containing data.

The script type is designated as TX_NULL_DATA.

Definition at line 17 of file standard.cpp.

nMaxDatacarrierBytes

unsigned nMaxDatacarrierBytes = MAX_OP_RETURN_RELAY

Maximum size of TX_NULL_DATA scripts that this node considers standard.

Definition at line 18 of file standard.cpp.