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cic-eth: Introduce transfer authorization contract

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This commit is contained in:
Louis Holbrook
2021-03-04 15:06:14 +00:00
committed by Philip Wafula
parent 1e9bf6b4d3
commit 8240e58c0a
29 changed files with 312 additions and 366 deletions
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1
apps/cic-eth/cic_eth/runnable/daemons/filters/__init__.py
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@@ -2,3 +2,4 @@ from .callback import CallbackFilter
from .tx import TxFilter
from .gas import GasFilter
from .register import RegistrationFilter
from .transferauth import TransferAuthFilter

4
apps/cic-eth/cic_eth/runnable/daemons/filters/gas.py
View File

@@ -1,7 +1,7 @@
# standard imports
import logging
# third-party imports
# external imports
from cic_registry.chain import ChainSpec
from hexathon import add_0x
@@ -24,7 +24,7 @@ class GasFilter(SyncFilter):
self.chain_spec = chain_spec
def filter(self, conn, block, tx, session): #rcpt, chain_str, session=None):
def filter(self, conn, block, tx, session):
tx_hash_hex = add_0x(tx.hash)
if tx.value > 0:
logg.debug('gas refill tx {}'.format(tx_hash_hex))

89
apps/cic-eth/cic_eth/runnable/daemons/filters/transferauth.py Normal file
View File

@@ -0,0 +1,89 @@
# standard imports
import logging
# external imports
import celery
from hexathon import (
strip_0x,
add_0x,
)
from chainlib.eth.address import to_checksum
from .base import SyncFilter
logg = logging.getLogger(__name__)
transfer_request_signature = 'ed71262a'
def unpack_create_request(data):
data = strip_0x(data)
cursor = 0
f = data[cursor:cursor+8]
cursor += 8
if f != transfer_request_signature:
raise ValueError('Invalid create request data ({})'.format(f))
o = {}
o['sender'] = data[cursor+24:cursor+64]
cursor += 64
o['recipient'] = data[cursor+24:cursor+64]
cursor += 64
o['token'] = data[cursor+24:cursor+64]
cursor += 64
o['value'] = int(data[cursor:], 16)
return o
class TransferAuthFilter(SyncFilter):
def __init__(self, registry, chain_spec, queue=None):
self.queue = queue
self.chain_spec = chain_spec
self.transfer_request_contract = registry.get_contract(self.chain_spec, 'TransferAuthorization')
def filter(self, conn, block, tx, session): #rcpt, chain_str, session=None):
if tx.payload == None:
logg.debug('no payload')
return False
payloadlength = len(tx.payload)
if payloadlength != 8+256:
logg.debug('{} below minimum length for a transfer auth call'.format(payloadlength))
logg.debug('payload {}'.format(tx.payload))
return False
recipient = tx.inputs[0]
if recipient != self.transfer_request_contract.address():
logg.debug('not our transfer auth contract address {}'.format(recipient))
return False
o = unpack_create_request(tx.payload)
sender = add_0x(to_checksum(o['sender']))
recipient = add_0x(to_checksum(recipient))
token = add_0x(to_checksum(o['token']))
s = celery.signature(
'cic_eth.eth.token.approve',
[
[
{
'address': token,
},
],
sender,
recipient,
o['value'],
str(self.chain_spec),
],
queue=self.queue,
)
t = s.apply_async()
return True
def __str__(self):
return 'cic-eth transfer auth filter'

59
apps/cic-eth/cic_eth/runnable/server_agent.py → apps/cic-eth/cic_eth/runnable/daemons/server.py
View File

@@ -55,62 +55,25 @@ SessionBase.connect(dsn)
celery_app = celery.Celery(backend=config.get('CELERY_RESULT_URL'), broker=config.get('CELERY_BROKER_URL'))
queue = args.q
re_transfer_approval_request = r'^/transferrequest/?'
re_something = r'^/something/?'
chain_spec = ChainSpec.from_chain_str(config.get('CIC_CHAIN_SPEC'))
def process_transfer_approval_request(session, env):
r = re.match(re_transfer_approval_request, env.get('PATH_INFO'))
def process_something(session, env):
r = re.match(re_something, env.get('PATH_INFO'))
if not r:
return None
if env.get('CONTENT_TYPE') != 'application/json':
raise AttributeError('content type')
#if env.get('CONTENT_TYPE') != 'application/json':
# raise AttributeError('content type')
if env.get('REQUEST_METHOD') != 'POST':
raise AttributeError('method')
#if env.get('REQUEST_METHOD') != 'POST':
# raise AttributeError('method')
post_data = json.load(env.get('wsgi.input'))
token_address = web3.Web3.toChecksumAddress(post_data['token_address'])
holder_address = web3.Web3.toChecksumAddress(post_data['holder_address'])
beneficiary_address = web3.Web3.toChecksumAddress(post_data['beneficiary_address'])
value = int(post_data['value'])
logg.debug('transfer approval request token {} to {} from {} value {}'.format(
token_address,
beneficiary_address,
holder_address,
value,
)
)
s = celery.signature(
'cic_eth.eth.request.transfer_approval_request',
[
[
{
'address': token_address,
},
],
holder_address,
beneficiary_address,
value,
config.get('CIC_CHAIN_SPEC'),
],
queue=queue,
)
t = s.apply_async()
r = t.get()
tx_raw_bytes = bytes.fromhex(r[0][2:])
tx = unpack_signed_raw_tx(tx_raw_bytes, chain_spec.chain_id())
for r in t.collect():
logg.debug('result {}'.format(r))
if not t.successful():
raise RuntimeError(tx['hash'])
return ('text/plain', tx['hash'].encode('utf-8'),)
#post_data = json.load(env.get('wsgi.input'))
#return ('text/plain', 'foo'.encode('utf-8'),)
# uwsgi application
@@ -125,7 +88,7 @@ def application(env, start_response):
session = SessionBase.create_session()
for handler in [
process_transfer_approval_request,
process_something,
]:
try:
r = handler(session, env)

2
apps/cic-eth/cic_eth/runnable/daemons/tasker.py
View File

@@ -26,7 +26,6 @@ from cic_eth.eth import bancor
from cic_eth.eth import token
from cic_eth.eth import tx
from cic_eth.eth import account
from cic_eth.eth import request
from cic_eth.admin import debug
from cic_eth.admin import ctrl
from cic_eth.eth.rpc import RpcClient
@@ -40,6 +39,7 @@ from cic_eth.callbacks import redis
from cic_eth.db.models.base import SessionBase
from cic_eth.db.models.otx import Otx
from cic_eth.db import dsn_from_config
from cic_eth.ext import tx
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()

4
apps/cic-eth/cic_eth/runnable/daemons/tracker.py
View File

@@ -58,6 +58,7 @@ from cic_eth.runnable.daemons.filters import (
GasFilter,
TxFilter,
RegistrationFilter,
TransferAuthFilter,
)
script_dir = os.path.realpath(os.path.dirname(__file__))
@@ -146,6 +147,8 @@ def main():
gas_filter = GasFilter(chain_spec, config.get('_CELERY_QUEUE'))
transfer_auth_filter = TransferAuthFilter(registry, chain_spec, config.get('_CELERY_QUEUE'))
i = 0
for syncer in syncers:
logg.debug('running syncer index {}'.format(i))
@@ -153,6 +156,7 @@ def main():
syncer.add_filter(registration_filter)
# TODO: the two following filter functions break the filter loop if return uuid. Pro: less code executed. Con: Possibly unintuitive flow break
syncer.add_filter(tx_filter)
syncer.add_filter(transfer_auth_filter)
for cf in callback_filters:
syncer.add_filter(cf)

9
apps/cic-eth/cic_eth/runnable/view.py
View File

@@ -23,8 +23,11 @@ from hexathon import add_0x
# local imports
from cic_eth.api import AdminApi
from cic_eth.eth.rpc import RpcClient
from cic_eth.db.enum import StatusEnum
from cic_eth.db.enum import LockEnum
from cic_eth.db.enum import (
StatusEnum,
status_str,
LockEnum,
)
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()
@@ -119,7 +122,7 @@ def render_tx(o, **kwargs):
for v in o.get('status_log', []):
d = datetime.datetime.fromisoformat(v[0])
e = StatusEnum(v[1]).name
e = status_str(v[1])
content += '{}: {}\n'.format(d, e)
return content