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crate::ix!();
//-------------------------------------------[.cpp/bitcoin/src/external_signer.h]
/**
| Enables interaction with an external signing
| device or service, such as a hardware
| wallet. See doc/external-signer.md
*/
pub struct ExternalSigner {
/**
| The command which handles interaction
| with the external signer.
|
*/
command: String,
/**
| Bitcoin mainnet, testnet, etc
|
*/
chain: String,
/**
| Master key fingerprint of the signer
|
*/
fingerprint: String,
/**
| Name of signer
|
*/
name: String,
}
//-------------------------------------------[.cpp/bitcoin/src/external_signer.cpp]
impl ExternalSigner {
/**
| @param[in] command
|
| the command which handles interaction
| with the external signer
| ----------
| @param[in] fingerprint
|
| master key fingerprint of the signer
| ----------
| @param[in] chain
|
| "main", "test", "regtest" or "signet"
| ----------
| @param[in] name
|
| device name
|
*/
pub fn new(
command: &String,
chain: String,
fingerprint: &String,
name: String) -> Self {
todo!();
/*
: command(command),
: chain(chain),
: fingerprint(fingerprint),
: name(name),
*/
}
pub fn network_arg(&self) -> String {
todo!();
/*
return " --chain " + m_chain;
*/
}
/**
| Obtain a list of signers. Calls `<command>
| enumerate`.
|
| -----------
| @param[in] command
|
| the command which handles interaction
| with the external signer
| ----------
| @param[in,out] signers
|
| vector to which new signers (with a unique
| master key fingerprint) are added
| ----------
| @param chain
|
| "main", "test", "regtest" or "signet"
|
| -----------
| @return
|
| success
|
*/
pub fn enumerate(&mut self,
command: &String,
signers: &mut Vec<ExternalSigner>,
chain: String) -> bool {
todo!();
/*
// Call <command> enumerate
const UniValue result = RunCommandParseJSON(command + " enumerate");
if (!result.isArray()) {
throw std::runtime_error(strprintf("'%s' received invalid response, expected array of signers", command));
}
for (UniValue signer : result.getValues()) {
// Check for error
const UniValue& error = find_value(signer, "error");
if (!error.isNull()) {
if (!error.isStr()) {
throw std::runtime_error(strprintf("'%s' error", command));
}
throw std::runtime_error(strprintf("'%s' error: %s", command, error.getValStr()));
}
// Check if fingerprint is present
const UniValue& fingerprint = find_value(signer, "fingerprint");
if (fingerprint.isNull()) {
throw std::runtime_error(strprintf("'%s' received invalid response, missing signer fingerprint", command));
}
const std::string fingerprintStr = fingerprint.get_str();
// Skip duplicate signer
bool duplicate = false;
for (const ExternalSigner& signer : signers) {
if (signer.m_fingerprint.compare(fingerprintStr) == 0) duplicate = true;
}
if (duplicate) break;
std::string name = "";
const UniValue& model_field = find_value(signer, "model");
if (model_field.isStr() && model_field.getValStr() != "") {
name += model_field.getValStr();
}
signers.push_back(ExternalSigner(command, chain, fingerprintStr, name));
}
return true;
*/
}
/**
| Display address on the device. Calls
| `<command> displayaddress --desc
| <descriptor>`.
|
| -----------
| @param[in] descriptor
|
| Descriptor specifying which address
| to display.
|
| Must include a public key or xpub, as
| well as key origin.
|
*/
pub fn display_address(&self, descriptor: &String) -> UniValue {
todo!();
/*
return RunCommandParseJSON(m_command + " --fingerprint \"" + m_fingerprint + "\"" + NetworkArg() + " displayaddress --desc \"" + descriptor + "\"");
*/
}
/**
| Get receive and change Descriptor(s)
| from device for a given account.
|
| Calls `<command> getdescriptors --account
| <account>`
|
| -----------
| @param[in] account
|
| which BIP32 account to use (e.g. `m/44'/0'/account'`)
|
| -----------
| @return
|
| see doc/external-signer.md
|
*/
pub fn get_descriptors(&mut self, account: i32) -> UniValue {
todo!();
/*
return RunCommandParseJSON(m_command + " --fingerprint \"" + m_fingerprint + "\"" + NetworkArg() + " getdescriptors --account " + strprintf("%d", account));
*/
}
/**
| Sign PartiallySignedTransaction
| on the device.
|
| Calls `<command> signtransaction`
| and passes the PSBT via stdin.
|
| -----------
| @param[in,out] psbt
|
| PartiallySignedTransaction to be
| signed
|
*/
pub fn sign_transaction(&mut self,
psbtx: &mut PartiallySignedTransaction,
error: &mut String) -> bool {
todo!();
/*
// Serialize the PSBT
DataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
ssTx << psbtx;
// Check if signer fingerprint matches any input master key fingerprint
auto matches_signer_fingerprint = [&](const PSBTInput& input) {
for (const auto& entry : input.hd_keypaths) {
if (m_fingerprint == strprintf("%08x", ReadBE32(entry.second.fingerprint))) return true;
}
return false;
};
if (!std::any_of(psbtx.inputs.begin(), psbtx.inputs.end(), matches_signer_fingerprint)) {
error = "Signer fingerprint " + m_fingerprint + " does not match any of the inputs:\n" + EncodeBase64(ssTx.str());
return false;
}
const std::string command = m_command + " --stdin --fingerprint \"" + m_fingerprint + "\"" + NetworkArg();
const std::string stdinStr = "signtx \"" + EncodeBase64(ssTx.str()) + "\"";
const UniValue signer_result = RunCommandParseJSON(command, stdinStr);
if (find_value(signer_result, "error").isStr()) {
error = find_value(signer_result, "error").get_str();
return false;
}
if (!find_value(signer_result, "psbt").isStr()) {
error = "Unexpected result from signer";
return false;
}
PartiallySignedTransaction signer_psbtx;
std::string signer_psbt_error;
if (!DecodeBase64PSBT(signer_psbtx, find_value(signer_result, "psbt").get_str(), signer_psbt_error)) {
error = strprintf("TX decode failed %s", signer_psbt_error);
return false;
}
psbtx = signer_psbtx;
return true;
*/
}
}