Initial commit

cic_tools/eth/checksum.py

@@ -0,0 +1,28 @@
+# third-party imports
+import sha3
+from hexathon import (
+        strip_0x,
+        uniform,
+    )
+
+
+def to_checksum(address_hex):
+    
+        address_hex = strip_0x(address_hex)
+        address_hex = uniform(address_hex)
+        h = sha3.keccak_256()
+        h.update(address_hex.encode('utf-8'))
+        z = h.digest()
+
+        checksum_address_hex = '0x'
+
+        for (i, c) in enumerate(address_hex):
+            if c in '1234567890':
+                checksum_address_hex += c
+            elif c in 'abcdef':
+                if z[int(i / 2)] & (0x80 >> ((i % 2) * 4)) > 1:
+                    checksum_address_hex += c.upper()
+                else:
+                    checksum_address_hex += c
+
+        return checksum_address_hex

cic_tools/eth/connection.py

@@ -0,0 +1,31 @@
+import logging
+import json
+from urllib.request import (
+        Request,
+        urlopen,
+        )
+
+from .error import DefaultErrorParser
+from .method import jsonrpc_result
+
+error_parser = DefaultErrorParser()
+logg = logging.getLogger(__name__)
+
+
+class HTTPConnection:
+
+    def __init__(self, url):
+        self.url = url
+
+
+    def do(self, o, error_parser=error_parser):
+        req = Request(
+                self.url,
+                method='POST',
+                )
+        req.add_header('Content-Type', 'application/json')
+        data = json.dumps(o)
+        logg.debug('(HTTP) send {}'.format(data))
+        res = urlopen(req, data=data.encode('utf-8'))
+        o = json.load(res)
+        return jsonrpc_result(o, error_parser)

cic_tools/eth/constant.py

@@ -0,0 +1,2 @@
+zero_address = '0x{:040x}'.format(0)
+zero_content = '0x{:064x}'.format(0)

cic_tools/eth/error.py

@@ -0,0 +1,8 @@
+class EthException(Exception):
+    pass
+
+
+class DefaultErrorParser:
+
+    def translate(self, error):
+        return EthException('default parser code {}'.format(error))

cic_tools/eth/hash.py

@@ -0,0 +1,7 @@
+import sha3
+
+
+def keccak256_hex(s):
+    h = sha3.keccak_256()
+    h.update(s.encode('utf-8'))
+    return h.digest().hex()

cic_tools/eth/method.py

@@ -0,0 +1,61 @@
+import sha3
+import uuid
+
+from hexathon import add_0x
+from eth_abi import encode_single
+
+from .hash import keccak256_hex
+from .constant import zero_address
+
+
+# TODO: move to cic-contracts
+erc20_balance_signature = keccak256_hex('balanceOf(address)')[:8]
+erc20_decimals_signature = keccak256_hex('decimals()')[:8]
+
+
+def jsonrpc_template():
+    return {
+        'jsonrpc': '2.0',
+        'id': str(uuid.uuid4()),
+        'method': None,
+        'params': [],
+            }
+
+
+def erc20_balance(contract_address, address, sender_address=zero_address):
+    o = jsonrpc_template()
+    o['method'] = 'eth_call'
+    data = erc20_balance_signature
+    data += encode_single('address', address).hex()
+    data = add_0x(data)
+    a = call(contract_address, data=data)
+    o['params'].append(a)
+    o['params'].append('latest')
+    return o
+
+
+def erc20_decimals(contract_address, sender_address=zero_address):
+    o = jsonrpc_template()
+    o['method'] = 'eth_call'
+    arg = add_0x(erc20_decimals_signature)
+    #o['params'].append(arg)
+    a = call(contract_address, arg)
+    o['params'].append(a)
+    o['params'].append('latest')
+    return o
+
+
+def call(contract_address, data, sender_address=zero_address):
+    return {
+        'from': sender_address,
+        'to': contract_address,
+        'data': data,
+            }
+
+
+def jsonrpc_result(o, ep):
+    if o.get('error') != None:
+        raise ep.translate(o)
+    return o['result']
+
+

cic_tools/eth/runnable/balance.py

@@ -0,0 +1,99 @@
+#!python3
+
+"""Token balance query script
+
+.. moduleauthor:: Louis Holbrook <dev@holbrook.no>
+.. pgp:: 0826EDA1702D1E87C6E2875121D2E7BB88C2A746 
+
+"""
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# standard imports
+import os
+import json
+import argparse
+import logging
+
+# third-party imports
+from hexathon import (
+        add_0x,
+        strip_0x,
+        even,
+        )
+import sha3
+from eth_abi import encode_single
+
+# local imports
+from cic_tools.eth.checksum import to_checksum
+from cic_tools.eth.method import (
+        jsonrpc_template,
+        erc20_balance,
+        erc20_decimals,
+        jsonrpc_result,
+        )
+from cic_tools.eth.connection import HTTPConnection
+
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+default_abi_dir = os.environ.get('ETH_ABI_DIR', '/usr/share/local/cic/solidity/abi')
+default_eth_provider = os.environ.get('ETH_PROVIDER', 'http://localhost:8545')
+
+argparser = argparse.ArgumentParser()
+argparser.add_argument('-p', '--provider', dest='p', default=default_eth_provider, type=str, help='Web3 provider url (http only)')
+argparser.add_argument('-t', '--token-address', dest='t', type=str, help='Token address. If not set, will return gas balance')
+argparser.add_argument('-u', '--unsafe', dest='u', action='store_true', help='Auto-convert address to checksum adddress')
+argparser.add_argument('--abi-dir', dest='abi_dir', type=str, default=default_abi_dir, help='Directory containing bytecode and abi (default {})'.format(default_abi_dir))
+argparser.add_argument('-v', action='store_true', help='Be verbose')
+argparser.add_argument('account', type=str, help='Account address')
+args = argparser.parse_args()
+
+
+if args.v:
+    logg.setLevel(logging.DEBUG)
+
+conn = HTTPConnection(args.p)
+
+def main():
+#    w3 = web3.Web3(web3.Web3.HTTPProvider(args.p))
+# REPLACE WITH URLLIB
+  
+    account = to_checksum(args.account)
+    if not args.u and account != add_0x(args.account):
+        raise ValueError('invalid checksum address')
+    
+    r = None
+    decimals = 18
+    if args.t != None:
+        # determine decimals
+        decimals_o = erc20_decimals(args.t)
+        r = conn.do(decimals_o)
+        decimals = int(strip_0x(r), 16)
+
+        # get balance
+        balance_o = erc20_balance(args.t, account)
+        r = conn.do(balance_o)
+
+    else:
+        o = jsonrpc_template()
+        o['method'] = 'eth_getBalance'
+        o['params'].append(account)
+        r = conn.do(o)
+   
+    hx = strip_0x(r)
+    balance = int(hx, 16)
+    logg.debug('balance {} = {} decimals {}'.format(even(hx), balance, decimals))
+
+    balance_str = str(balance)
+    balance_len = len(balance_str)
+    if balance_len < 19:
+        print('0.{}'.format(balance_str.zfill(decimals)))
+    else:
+        offset = balance_len-decimals
+        print('{}.{}'.format(balance_str[:offset],balance_str[offset:]))
+
+
+if __name__ == '__main__':
+    main()

cic_tools/eth/runnable/checksum.py

@@ -0,0 +1,8 @@
+# standard imports
+import sys
+
+# local imports
+from cic_tools.eth.checksum import to_checksum
+
+
+print(to_checksum(sys.argv[1]))

requirements.txt

@@ -0,0 +1,13 @@
+cryptocurrency-cli-tools==0.0.4
+giftable-erc20-token==0.0.7b6
+eth-accounts-index==0.0.10a6
+erc20-single-shot-faucet==0.2.0a5
+erc20-approval-escrow==0.3.0a4
+cic-eth==0.10.0a21+build.e4161b3e
+vobject==0.9.6.1
+faker==4.17.1
+eth-address-index==0.1.0a5
+crypto-dev-signer==0.4.13rc2
+pysha3==1.0.2
+hexathon==0.0.1a2
+eth-abi==2.1.1

setup.cfg

@@ -0,0 +1,36 @@
+[metadata]
+name = cic-tools
+version = 0.0.1a1
+description = Executable tools for CIC network
+author = Louis Holbrook
+author_email = dev@holbrook.no
+url = https://gitlab.com/grassrootseconomics/cic-tools
+keywords =
+	cic
+	cryptocurrency
+	ethereum
+	solidarity
+	mutual_credit
+classifiers =
+	Programming Language :: Python :: 3
+	Operating System :: OS Independent
+	Development Status :: 3 - Alpha
+	Environment :: Console
+	Intended Audience :: Developers
+	License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)
+	Topic :: Internet
+#	Topic :: Blockchain :: EVM
+license = GPL3
+licence_files =
+	LICENSE.txt
+
+[options]
+python_requires = >= 3.6
+packages = 
+	cic_tools.eth
+	cic_tools.eth.runnable
+
+[options.entry_points]
+console_scripts =
+	eth-balance = cic_tools.eth.runnable.balance:main
+	eth-checksum = cic_tools.eth.runnable.checksum:main

setup.py

@@ -0,0 +1,16 @@
+from setuptools import setup
+import configparser
+import os
+
+requirements = []
+f = open('requirements.txt', 'r')
+while True:
+    l = f.readline()
+    if l == '':
+        break
+    requirements.append(l.rstrip())
+f.close()
+
+setup(
+    install_requires=requirements,
+    )