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67 lines
2.7 KiB
67 lines
2.7 KiB
// Copyright (c) 2018-2021 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_EXTERNAL_SIGNER_H
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#define BITCOIN_EXTERNAL_SIGNER_H
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#include <univalue.h>
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#include <util/system.h>
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#include <string>
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#include <vector>
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struct PartiallySignedTransaction;
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//! Enables interaction with an external signing device or service, such as
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//! a hardware wallet. See doc/external-signer.md
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class ExternalSigner
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{
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private:
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//! The command which handles interaction with the external signer.
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std::string m_command;
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//! Bitcoin mainnet, testnet, etc
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std::string m_chain;
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const std::string NetworkArg() const;
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public:
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//! @param[in] command the command which handles interaction with the external signer
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//! @param[in] fingerprint master key fingerprint of the signer
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//! @param[in] chain "main", "test", "regtest" or "signet"
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//! @param[in] name device name
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ExternalSigner(const std::string& command, const std::string chain, const std::string& fingerprint, const std::string name);
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//! Master key fingerprint of the signer
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std::string m_fingerprint;
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//! Name of signer
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std::string m_name;
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//! Obtain a list of signers. Calls `<command> enumerate`.
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//! @param[in] command the command which handles interaction with the external signer
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//! @param[in,out] signers vector to which new signers (with a unique master key fingerprint) are added
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//! @param chain "main", "test", "regtest" or "signet"
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//! @returns success
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static bool Enumerate(const std::string& command, std::vector<ExternalSigner>& signers, const std::string chain);
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//! Display address on the device. Calls `<command> displayaddress --desc <descriptor>`.
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//! @param[in] descriptor Descriptor specifying which address to display.
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//! Must include a public key or xpub, as well as key origin.
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UniValue DisplayAddress(const std::string& descriptor) const;
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//! Get receive and change Descriptor(s) from device for a given account.
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//! Calls `<command> getdescriptors --account <account>`
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//! @param[in] account which BIP32 account to use (e.g. `m/44'/0'/account'`)
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//! @returns see doc/external-signer.md
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UniValue GetDescriptors(const int account);
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//! Sign PartiallySignedTransaction on the device.
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//! Calls `<command> signtransaction` and passes the PSBT via stdin.
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//! @param[in,out] psbt PartiallySignedTransaction to be signed
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bool SignTransaction(PartiallySignedTransaction& psbt, std::string& error);
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};
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#endif // BITCOIN_EXTERNAL_SIGNER_H
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