cic-contracts/python/cic_contracts/registry.py

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Python
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2021-11-13 07:06:52 +01:00
# standard imports
import logging
import hashlib
# external imports
from chainlib.jsonrpc import JSONRPCRequest
from chainlib.eth.contract import (
ABIContractEncoder,
ABIContractType,
abi_decode_single,
)
from chainlib.eth.tx import TxFactory
from hexathon import (
add_0x,
strip_0x,
)
from chainlib.eth.constant import (
ZERO_ADDRESS,
)
logg = logging.getLogger(__name__)
def to_text(b):
b = b[:b.find(0)]
# TODO: why was this part of this method previously?
# if len(b) % 2 > 0:
# b = b'\x00' + b
return b.decode('utf-8')
def from_text(txt):
return '0x{:0<64s}'.format(txt.encode('utf-8').hex())
def from_identifier(b):
return to_text(b)
def from_identifier_hex(hx):
b = bytes.fromhex(strip_0x(hx))
return from_identifier(b)
def to_identifier(txt):
return from_text(txt)
class CICRegistry(TxFactory):
def address_of(self, contract_address, identifier_string, sender_address=ZERO_ADDRESS, id_generator=None):
identifier = to_identifier(identifier_string)
logg.debug('using identifier for addressOf {} -> {}'.format(identifier, identifier_string))
return self.address_of_literatl(contract_address, identifier, sender_address=sender_address, id_generator=id_generator)
def address_of_literal(self, contract_address, identifier, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('addressOf')
enc.typ(ABIContractType.BYTES32)
enc.bytes32(identifier)
data = add_0x(enc.encode())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o = j.finalize(o)
return o
@classmethod
def parse_address_of(self, v):
return abi_decode_single(ABIContractType.ADDRESS, v)
def set(self, contract_address, sender_address, identifier_string, address):
enc = ABIContractEncoder()
enc.method('set')
enc.typ(ABIContractType.BYTES32)
enc.typ(ABIContractType.ADDRESS)
identifier = to_identifier(identifier_string)
enc.bytes32(identifier)
enc.address(address)
data = enc.encode()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
return self.build(tx)
def bind(self, contract_address, sender_address, identifier_string, reference):
enc = ABIContractEncoder()
enc.method('bind')
enc.typ(ABIContractType.BYTES32)
enc.typ(ABIContractType.BYTES32)
identifier = to_identifier(identifier_string)
enc.bytes32(identifier)
enc.bytes32(reference)
data = enc.encode()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
return self.build(tx)
def identifier(self, contract_address, idx, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('identifiers')
enc.typ(ABIContractType.UINT256)
enc.uint256(idx)
data = add_0x(enc.encode())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o = j.finalize(o)
return o
@classmethod
def parse_identifier(self, v):
return from_identifier_hex(v)