aboutsummaryrefslogtreecommitdiff
path: root/src/node/psbt.h
blob: def4385c09ce819db950729514fff388b0d6933d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
// Copyright (c) 2009-2019 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>

/**
 * 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);

#endif // BITCOIN_NODE_PSBT_H