bitcoin/src/wallet/external_signer_scriptpubkeyman.cpp

// Copyright (c) 2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <chainparams.h>
#include <wallet/external_signer.h>
#include <wallet/external_signer_scriptpubkeyman.h>

#ifdef ENABLE_EXTERNAL_SIGNER

bool ExternalSignerScriptPubKeyMan::SetupDescriptor(std::unique_ptr<Descriptor> desc)
{
    LOCK(cs_desc_man);
    assert(m_storage.IsWalletFlagSet(WALLET_FLAG_DESCRIPTORS));
    assert(m_storage.IsWalletFlagSet(WALLET_FLAG_EXTERNAL_SIGNER));

    int64_t creation_time = GetTime();

    // Make the descriptor
    WalletDescriptor w_desc(std::move(desc), creation_time, 0, 0, 0);
    m_wallet_descriptor = w_desc;

    // Store the descriptor
    WalletBatch batch(m_storage.GetDatabase());
    if (!batch.WriteDescriptor(GetID(), m_wallet_descriptor)) {
        throw std::runtime_error(std::string(__func__) + ": writing descriptor failed");
    }

    // TopUp
    TopUp();

    m_storage.UnsetBlankWalletFlag(batch);
    return true;
}

ExternalSigner ExternalSignerScriptPubKeyMan::GetExternalSigner() {
    const std::string command = gArgs.GetArg("-signer", "");
    if (command == "") throw std::runtime_error(std::string(__func__) + ": restart bitcoind with -signer=<cmd>");
    std::vector<ExternalSigner> signers;
    ExternalSigner::Enumerate(command, signers, Params().NetworkIDString());
    if (signers.empty()) throw std::runtime_error(std::string(__func__) + ": No external signers found");
    // TODO: add fingerprint argument in case of multiple signers
    return signers[0];
}

#endif