funga/crypto_dev_signer/runnable/signer.py

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# standard imports
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import re
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import os
import sys
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import json
import logging
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import argparse
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from urllib.parse import urlparse
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# external imports
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import confini
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from jsonrpc.exceptions import *
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# local imports
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from crypto_dev_signer.eth.signer import ReferenceSigner
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from crypto_dev_signer.keystore.reference import ReferenceKeystore
from crypto_dev_signer.cli.handle import SignRequestHandler
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logging.basicConfig(level=logging.WARNING)
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logg = logging.getLogger()
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config_dir = '.'
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db = None
signer = None
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session = None
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chainId = 8995
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socket_path = '/run/crypto-dev-signer/jsonrpc.ipc'
argparser = argparse.ArgumentParser()
argparser.add_argument('-c', type=str, default=config_dir, help='config file')
argparser.add_argument('--env-prefix', default=os.environ.get('CONFINI_ENV_PREFIX'), dest='env_prefix', type=str, help='environment prefix for variables to overwrite configuration')
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argparser.add_argument('-i', type=int, help='default chain id for EIP155')
argparser.add_argument('-s', type=str, help='socket path')
argparser.add_argument('-v', action='store_true', help='be verbose')
argparser.add_argument('-vv', action='store_true', help='be more verbose')
args = argparser.parse_args()
if args.vv:
logging.getLogger().setLevel(logging.DEBUG)
elif args.v:
logging.getLogger().setLevel(logging.INFO)
config = confini.Config(args.c, args.env_prefix)
config.process()
config.censor('PASSWORD', 'DATABASE')
config.censor('SECRET', 'SIGNER')
logg.debug('config loaded from {}:\n{}'.format(config_dir, config))
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if args.i:
chainId = args.i
if args.s:
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socket_url = urlparse(args.s)
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elif config.get('SIGNER_SOCKET_PATH'):
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socket_url = urlparse(config.get('SIGNER_SOCKET_PATH'))
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# connect to database
dsn = 'postgresql://{}:{}@{}:{}/{}'.format(
config.get('DATABASE_USER'),
config.get('DATABASE_PASSWORD'),
config.get('DATABASE_HOST'),
config.get('DATABASE_PORT'),
config.get('DATABASE_NAME'),
)
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logg.info('using dsn {}'.format(dsn))
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logg.info('using socket {}'.format(config.get('SIGNER_SOCKET_PATH')))
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re_http = r'^http'
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re_tcp = r'^tcp'
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re_unix = r'^ipc'
class MissingSecretError(Exception):
pass
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def main():
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secret_hex = config.get('SIGNER_SECRET')
if secret_hex == None:
raise MissingSecretError('please provide a valid hex value for the SIGNER_SECRET configuration variable')
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secret = bytes.fromhex(secret_hex)
kw = {
'symmetric_key': secret,
}
SignRequestHandler.keystore = ReferenceKeystore(dsn, **kw)
SignRequestHandler.signer = ReferenceSigner(SignRequestHandler.keystore)
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arg = None
try:
arg = json.loads(sys.argv[1])
except:
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logg.info('no json rpc command detected, starting socket server {}'.format(socket_url))
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scheme = 'ipc'
if socket_url.scheme != '':
scheme = socket_url.scheme
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if re.match(re_tcp, socket_url.scheme):
from crypto_dev_signer.cli.socket import start_server_tcp
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socket_spec = socket_url.netloc.split(':')
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host = socket_spec[0]
port = int(socket_spec[1])
start_server_tcp((host, port))
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elif re.match(re_http, socket_url.scheme):
from crypto_dev_signer.cli.http import start_server_http
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socket_spec = socket_url.netloc.split(':')
host = socket_spec[0]
port = int(socket_spec[1])
start_server_http((host, port))
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else:
from crypto_dev_signer.cli.socket import start_server_unix
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start_server_unix(socket_url.path)
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sys.exit(0)
(rpc_id, response) = process_input(arg)
r = jsonrpc_ok(rpc_id, response)
sys.stdout.write(json.dumps(r))
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if __name__ == '__main__':
main()