forked from chaintool/funga-eth
116 lines
3.5 KiB
Python
116 lines
3.5 KiB
Python
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# standard imports
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import json
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import logging
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# external imports
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from jsonrpc.exceptions import (
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JSONRPCServerError,
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JSONRPCParseError,
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JSONRPCInvalidParams,
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)
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from hexathon import add_0x
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# local imports
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from funga.eth.transaction import EIP155Transaction
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from funga.error import (
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UnknownAccountError,
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SignerError,
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)
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from funga.eth.cli.jsonrpc import jsonrpc_ok
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from .jsonrpc import (
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jsonrpc_error,
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is_valid_json,
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)
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logg = logging.getLogger(__name__)
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class SignRequestHandler:
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keystore = None
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signer = None
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def process_input(self, j):
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rpc_id = j['id']
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m = j['method']
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p = j['params']
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return (rpc_id, getattr(self, m)(p))
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def handle_jsonrpc(self, d):
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j = None
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try:
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j = json.loads(d)
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is_valid_json(j)
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logg.debug('{}'.format(d.decode('utf-8')))
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except Exception as e:
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logg.exception('input error {}'.format(e))
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j = json.dumps(jsonrpc_error(None, JSONRPCParseError)).encode('utf-8')
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raise SignerError(j)
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try:
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(rpc_id, r) = self.process_input(j)
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r = jsonrpc_ok(rpc_id, r)
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j = json.dumps(r).encode('utf-8')
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except ValueError as e:
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# TODO: handle cases to give better error context to caller
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logg.exception('process error {}'.format(e))
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j = json.dumps(jsonrpc_error(j['id'], JSONRPCServerError)).encode('utf-8')
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raise SignerError(j)
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except UnknownAccountError as e:
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logg.exception('process unknown account error {}'.format(e))
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j = json.dumps(jsonrpc_error(j['id'], JSONRPCServerError)).encode('utf-8')
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raise SignerError(j)
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return j
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def personal_newAccount(self, p):
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password = p
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if p.__class__.__name__ != 'str':
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if p.__class__.__name__ != 'list':
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e = JSONRPCInvalidParams()
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e.data = 'parameter must be list containing one string'
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raise ValueError(e)
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logg.error('foo {}'.format(p))
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if len(p) != 1:
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e = JSONRPCInvalidParams()
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e.data = 'parameter must be list containing one string'
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raise ValueError(e)
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if p[0].__class__.__name__ != 'str':
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e = JSONRPCInvalidParams()
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e.data = 'parameter must be list containing one string'
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raise ValueError(e)
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password = p[0]
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r = self.keystore.new(password)
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return add_0x(r)
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# TODO: move to translation module ("personal" rpc namespace is node-specific)
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def personal_signTransaction(self, p):
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logg.debug('got {} to sign'.format(p[0]))
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t = EIP155Transaction(p[0], p[0]['nonce'], p[0]['chainId'])
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raw_signed_tx = self.signer.sign_transaction_to_rlp(t, p[1])
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o = {
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'raw': '0x' + raw_signed_tx.hex(),
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'tx': t.serialize(),
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}
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return o
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def eth_signTransaction(self, tx):
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o = self.personal_signTransaction([tx[0], ''])
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return o['raw']
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def eth_sign(self, p):
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logg.debug('got message {} to sign'.format(p[1]))
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message_type = type(p[1]).__name__
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if message_type != 'str':
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raise ValueError('invalid message format, must be {}, not {}'.format(message_type))
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z = self.signer.sign_ethereum_message(p[0], p[1][2:])
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return add_0x(z.hex())
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