funga/scripts/crypto-dev-daemon

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#!/usr/bin/python3
import socket
import json
import logging
import sys
import os
from jsonrpc.exceptions import *
from crypto_dev_signer.eth.signer import ReferenceSigner
from crypto_dev_signer.eth.transaction import EIP155Transaction
from crypto_dev_signer.keystore import ReferenceKeystore
logging.basicConfig(level=logging.DEBUG)
logg = logging.getLogger()
db = None
signer = None
chainId = 8995
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class MissingSecretError(BaseException):
def __init__(self, message):
super(MissingSecretError, self).__init__(message)
pass
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def personal_new_account(p):
password = p
if p.__class__.__name__ != 'str':
if p.__class__.__name__ != 'list':
e = JSONRPCInvalidParams()
e.data = 'parameter must be list containing one string'
raise ValueError(e)
logg.error('foo {}'.format(p))
if len(p) != 1:
e = JSONRPCInvalidParams()
e.data = 'parameter must be list containing one string'
raise ValueError(e)
if p[0].__class__.__name__ != 'str':
e = JSONRPCInvalidParams()
e.data = 'parameter must be list containing one string'
raise ValueError(e)
password = p[0]
r = db.new(password)
return r
def personal_sign_transaction(p):
t = EIP155Transaction(p[0], p[0]['nonce'], 8995)
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z = signer.signTransaction(t, p[1])
raw_signed_tx = t.rlp_serialize()
o = {
'raw': '0x' + raw_signed_tx.hex(),
'tx': t.serialize(),
}
logg.debug('signed {}'.format(o))
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return o
# TODO: temporary workaround for platform, since personal_signTransaction is missing from web3.py
def eth_signTransaction(tx):
return personal_sign_transaction([tx, ''])
methods = {
'personal_newAccount': personal_new_account,
'personal_signTransaction': personal_sign_transaction,
'eth_signTransaction': eth_signTransaction,
}
def jsonrpc_error(rpc_id, err):
return {
'json-rpc': '2.0',
'id': rpc_id,
'error': {
'code': err.CODE,
'message': err.MESSAGE,
},
}
def jsonrpc_ok(rpc_id, response):
return {
'json-rpc': '2.0',
'id': rpc_id,
'result': response,
}
def is_valid_json(j):
if j.get('id') == 'None':
raise ValueError('id missing')
return True
def process_input(j):
rpc_id = j['id']
m = j['method']
p = j['params']
return (rpc_id, methods[m](p))
def start_server():
try:
os.unlink('/tmp/foo.ipc')
except FileNotFoundError:
pass
s = socket.socket(family = socket.AF_UNIX, type = socket.SOCK_STREAM)
s.bind('/tmp/foo.ipc')
s.listen(10)
while True:
(csock, caddr) = s.accept()
d = csock.recv(4096)
j = None
try:
j = json.loads(d)
is_valid_json(j)
logg.debug('{}'.format(d.decode('utf-8')))
except Exception as e:
logg.error('input error {}'.format(e))
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csock.send(json.dumps(jsonrpc_error(None, JSONRPCParseError)).encode('utf-8'))
csock.close()
continue
try:
(rpc_id, r) = process_input(j)
csock.send(json.dumps(jsonrpc_ok(rpc_id, r)).encode('utf-8'))
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except Exception as e:
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# TODO: handle cases to give better error context to caller
logg.error('process error {}'.format(e))
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csock.send(json.dumps(jsonrpc_error(j['id'], JSONRPCServerError)).encode('utf-8'))
csock.close()
s.close()
os.unlink('/tmp/foo.ipc')
def init():
global db, signer
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secret_hex = ''
try:
secret_hex = os.environ['SIGNER_SECRET']
except KeyError as e:
raise MissingSecretError('please set the SIGNER_SECRET environment variable to a valid hex value')
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secret = bytes.fromhex(secret_hex)
kw = {
'symmetric_key': secret,
}
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db = ReferenceKeystore(os.environ.get('SIGNER_DATABASE', 'cic_signer'), **kw)
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signer = ReferenceSigner(db)
if __name__ == '__main__':
init()
arg = None
try:
arg = json.loads(sys.argv[1])
except:
logg.info('no json rpc command detected, starting socket server')
start_server()
sys.exit(0)
(rpc_id, response) = process_input(arg)
r = jsonrpc_ok(rpc_id, response)
sys.stdout.write(json.dumps(r))