Method FillPSBT

src/wallet/scriptpubkeyman.cpp:636–681

}

TransactionError LegacyScriptPubKeyMan::FillPSBT(PartiallySignedTransaction& psbtx, const PrecomputedTransactionData& txdata, int sighash_type, bool sign, bool bip32derivs, int* n_signed, bool finalize) const
{
    if (n_signed) {
        *n_signed = 0;
    }
    for (unsigned int i = 0; i < psbtx.inputs.size(); ++i) {
        PSBTInput& input = psbtx.inputs.at(i);

        if (PSBTInputSigned(input)) {
            continue;
        }

        // Get the Sighash type
        if (sign && input.sighash_type != std::nullopt && *input.sighash_type != sighash_type) {
            return TransactionError::SIGHASH_MISMATCH;
        }

        // Check non_witness_utxo has specified prevout
        if (input.non_witness_utxo) {
            if (*input.prev_out >= input.non_witness_utxo->vout.size()) {
                return TransactionError::MISSING_INPUTS;
            }
        } else if (input.witness_utxo.IsNull() && (!input.m_peg_in_value || input.m_peg_in_claim_script.empty())) {
            // There's no UTXO so we can just skip this now
            continue;
        }
        SignatureData sigdata;
        input.FillSignatureData(sigdata);
        SignPSBTInput(HidingSigningProvider(this, !sign, !bip32derivs), psbtx, i, &txdata, sighash_type, nullptr, finalize);

        bool signed_one = PSBTInputSigned(input);
        if (n_signed && (signed_one || !sign)) {
            // If sign is false, we assume that we _could_ sign if we get here. This
            // will never have false negatives; it is hard to tell under what i
            // circumstances it could have false positives.
            (*n_signed)++;
        }
    }

    // Fill in the bip32 keypaths and redeemscripts for the outputs so that hardware wallets can identify change
    for (unsigned int i = 0; i < psbtx.outputs.size(); ++i) {
        UpdatePSBTOutput(HidingSigningProvider(this, true, !bip32derivs), psbtx, i);
    }

    return TransactionError::OK;
}

std::unique_ptr<CKeyMetadata> LegacyScriptPubKeyMan::GetMetadata(const CTxDestination& dest) const
{