eth-faucet

Gas token gifter with controls from time intervals, amounts and access
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faucet.py (3223B)

      1 # Author:	Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
      2 # SPDX-License-Identifier:	GPL-3.0-or-later
      3 # File-version: 1
      4 # Description: Python interface to abi and bin files for faucet contracts
      5 
      6 # standard imports
      7 import logging
      8 import json
      9 import os
     10 
     11 # external imports
     12 from chainlib.eth.tx import TxFactory
     13 from chainlib.eth.constant import ZERO_ADDRESS
     14 from chainlib.eth.contract import (
     15         abi_decode_single,
     16         ABIContractEncoder,
     17         ABIContractType,
     18         )
     19 from chainlib.eth.tx import TxFormat
     20 from chainlib.jsonrpc import JSONRPCRequest
     21 from erc20_faucet import Faucet
     22 from hexathon import add_0x
     23 
     24 logg = logging.getLogger().getChild(__name__)
     25 
     26 moddir = os.path.dirname(__file__)
     27 datadir = os.path.join(moddir, 'data')
     28 
     29 
     30 class EthFaucet(Faucet):
     31 
     32     __abi = None
     33     __bytecode = None
     34     __address = None
     35 
     36     @staticmethod
     37     def abi():
     38         if EthFaucet.__abi == None:
     39             f = open(os.path.join(datadir, 'EthFaucet.json'), 'r')
     40             EthFaucet.__abi = json.load(f)
     41             f.close()
     42         return EthFaucet.__abi
     43 
     44 
     45     @staticmethod
     46     def bytecode():
     47         if EthFaucet.__bytecode == None:
     48             f = open(os.path.join(datadir, 'EthFaucet.bin'))
     49             EthFaucet.__bytecode = f.read()
     50             f.close()
     51         return EthFaucet.__bytecode
     52 
     53     @staticmethod
     54     def gas(code=None):
     55         return 2000000
     56 
     57 
     58     # TODO: allow multiple overriders
     59     def constructor(self, sender_address):
     60         code = EthFaucet.bytecode()
     61         enc = ABIContractEncoder()
     62         code += enc.get()
     63         tx = self.template(sender_address, None, use_nonce=True)
     64         tx = self.set_code(tx, code)
     65         return self.build(tx)
     66 
     67 
     68     def set_period_checker(self, contract_address, sender_address, checker_address, tx_format=TxFormat.JSONRPC):
     69         enc = ABIContractEncoder()
     70         enc.method('setPeriodChecker')
     71         enc.typ(ABIContractType.ADDRESS)
     72         enc.address(checker_address)
     73         data = enc.get()
     74         tx = self.template(sender_address, contract_address, use_nonce=True)
     75         tx = self.set_code(tx, data)
     76         tx = self.finalize(tx, tx_format)
     77         return tx
     78 
     79 
     80     def set_registry(self, contract_address, sender_address, checker_address, tx_format=TxFormat.JSONRPC):
     81         enc = ABIContractEncoder()
     82         enc.method('setRegistry')
     83         enc.typ(ABIContractType.ADDRESS)
     84         enc.address(checker_address)
     85         data = enc.get()
     86         tx = self.template(sender_address, contract_address, use_nonce=True)
     87         tx = self.set_code(tx, data)
     88         tx = self.finalize(tx, tx_format)
     89         return tx
     90 
     91 
     92     def check(self, contract_address, address, sender_address=ZERO_ADDRESS, id_generator=None):
     93         j = JSONRPCRequest(id_generator)
     94         o = j.template()
     95         o['method'] = 'eth_call'
     96         enc = ABIContractEncoder()
     97         enc.method('check')
     98         enc.typ(ABIContractType.ADDRESS)
     99         enc.address(address)
    100         data = add_0x(enc.get())
    101         tx = self.template(sender_address, contract_address)
    102         tx = self.set_code(tx, data)
    103         o['params'].append(self.normalize(tx))
    104         o['params'].append('latest')
    105         o = j.finalize(o)
    106         return o