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#!/usr/bin/env python3
# Copyright (c) 2017-2021 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test external signer.
Verify that a bitcoind node can use an external signer command.
See also wallet_signer.py for tests that require wallet context.
"""
import os
import platform
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
assert_raises_rpc_error,
)
class RPCSignerTest(BitcoinTestFramework):
def mock_signer_path(self):
path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'mocks', 'signer.py')
if platform.system() == "Windows":
return "py " + path
else:
return path
def set_test_params(self):
self.num_nodes = 4
# The experimental syscall sandbox feature (-sandbox) is not compatible with -signer (which
# invokes execve).
self.disable_syscall_sandbox = True
self.extra_args = [
[],
[f"-signer={self.mock_signer_path()}", '-keypool=10'],
[f"-signer={self.mock_signer_path()}", '-keypool=10'],
["-signer=fake.py"],
]
def skip_test_if_missing_module(self):
self.skip_if_no_external_signer()
def set_mock_result(self, node, res):
with open(os.path.join(node.cwd, "mock_result"), "w", encoding="utf8") as f:
f.write(res)
def clear_mock_result(self, node):
os.remove(os.path.join(node.cwd, "mock_result"))
def run_test(self):
self.log.debug(f"-signer={self.mock_signer_path()}")
assert_raises_rpc_error(-1, 'Error: restart bitcoind with -signer=<cmd>',
self.nodes[0].enumeratesigners
)
# Handle script missing:
assert_raises_rpc_error(
-1,
"CreateProcess failed: The system cannot find the file specified."
if platform.system() == "Windows"
else "execve failed: No such file or directory",
self.nodes[3].enumeratesigners,
)
# Handle error thrown by script
self.set_mock_result(self.nodes[1], "2")
assert_raises_rpc_error(-1, 'RunCommandParseJSON error',
self.nodes[1].enumeratesigners
)
self.clear_mock_result(self.nodes[1])
self.set_mock_result(self.nodes[1], '0 [{"type": "trezor", "model": "trezor_t", "error": "fingerprint not found"}]')
assert_raises_rpc_error(-1, 'fingerprint not found',
self.nodes[1].enumeratesigners
)
self.clear_mock_result(self.nodes[1])
result = self.nodes[1].enumeratesigners()
assert_equal(len(result['signers']), 2)
assert_equal(result['signers'][0]["fingerprint"], "00000001")
assert_equal(result['signers'][0]["name"], "trezor_t")
if __name__ == '__main__':
RPCSignerTest().main()
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