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// Copyright (c) 2009-2021 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_NODE_PSBT_H
#define BITCOIN_NODE_PSBT_H
#include <psbt.h>
#include <optional>
namespace node {
/**
* Holds an analysis of one input from a PSBT
*/
struct PSBTInputAnalysis {
bool has_utxo; //!< Whether we have UTXO information for this input
bool is_final; //!< Whether the input has all required information including signatures
PSBTRole next; //!< Which of the BIP 174 roles needs to handle this input next
std::vector<CKeyID> missing_pubkeys; //!< Pubkeys whose BIP32 derivation path is missing
std::vector<CKeyID> missing_sigs; //!< Pubkeys whose signatures are missing
uint160 missing_redeem_script; //!< Hash160 of redeem script, if missing
uint256 missing_witness_script; //!< SHA256 of witness script, if missing
};
/**
* Holds the results of AnalyzePSBT (miscellaneous information about a PSBT)
*/
struct PSBTAnalysis {
std::optional<size_t> estimated_vsize; //!< Estimated weight of the transaction
std::optional<CFeeRate> estimated_feerate; //!< Estimated feerate (fee / weight) of the transaction
std::optional<CAmount> fee; //!< Amount of fee being paid by the transaction
std::vector<PSBTInputAnalysis> inputs; //!< More information about the individual inputs of the transaction
PSBTRole next; //!< Which of the BIP 174 roles needs to handle the transaction next
std::string error; //!< Error message
void SetInvalid(std::string err_msg)
{
estimated_vsize = std::nullopt;
estimated_feerate = std::nullopt;
fee = std::nullopt;
inputs.clear();
next = PSBTRole::CREATOR;
error = err_msg;
}
};
/**
* Provides helpful miscellaneous information about where a PSBT is in the signing workflow.
*
* @param[in] psbtx the PSBT to analyze
* @return A PSBTAnalysis with information about the provided PSBT.
*/
PSBTAnalysis AnalyzePSBT(PartiallySignedTransaction psbtx);
} // namespace node
#endif // BITCOIN_NODE_PSBT_H
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