commit 4cf33d8cfd5510e30346fd7e805020b201e52a20
parent e2244bd052c7ce929c0ae323ca4789eb2eaec6fa
Author: nolash <dev@holbrook.no>
Date: Mon, 14 Dec 2020 20:25:41 +0100
Add python accessor
Diffstat:
8 files changed, 60 insertions(+), 82 deletions(-)
diff --git a/python/CHANGELOG b/python/CHANGELOG
@@ -1,3 +1,5 @@
+- 0.0.5
+ * Add python accessor
- 0.0.4
* Rename contracts-dir flag to abi-dir
* Use package data dir as default abi dir
diff --git a/python/erc20_approval_escrow/approval.py b/python/erc20_approval_escrow/approval.py
@@ -0,0 +1,57 @@
+# Author: Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
+# SPDX-License-Identifier: GPL-3.0-or-later
+# File-version: 1
+# Description: Python interface to abi and bin files for faucet contracts
+
+# standard imports
+import logging
+import json
+import os
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+moddir = os.path.dirname(__file__)
+datadir = os.path.join(moddir, 'data')
+
+
+class TransferApproval:
+
+ __abi = None
+ __bytecode = None
+ __address = None
+
+ def __init__(self, w3, address, signer_address=None):
+ abi = TransferApproval.abi()
+ TransferApproval.bytecode()
+ self.__address = address
+ self.contract = w3.eth.contract(abi=abi, address=address)
+ self.w3 = w3
+ if signer_address != None:
+ self.signer_address = signer_address
+ else:
+ if type(self.w3.eth.defaultAccount).__name__ == 'Empty':
+ self.w3.eth.defaultAccount = self.w3.eth.accounts[0]
+ self.signer_address = self.w3.eth.defaultAccount
+
+
+ @staticmethod
+ def abi():
+ if TransferApproval.__abi == None:
+ f = open(os.path.join(datadir, 'TransferApproval.json'), 'r')
+ TransferApproval.__abi = json.load(f)
+ f.close()
+ return TransferApproval.__abi
+
+
+ @staticmethod
+ def bytecode():
+ if TransferApproval.__bytecode == None:
+ f = open(os.path.join(datadir, 'TransferApproval.bin'))
+ TransferApproval.__bytecode = f.read()
+ f.close()
+ return TransferApproval.__bytecode
+
+
+
+
diff --git a/python/erc20_approval_escrow/data/ERC20ApprovalEscrow.abi.json b/python/erc20_approval_escrow/data/ERC20ApprovalEscrow.abi.json
@@ -1 +0,0 @@
-[{"inputs":[{"internalType":"address[]","name":"_approvers","type":"address[]"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"serial","type":"uint256"}],"name":"NewExecution","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"serial","type":"uint256"}],"name":"NewRejection","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_sender","type":"address"},{"indexed":true,"internalType":"address","name":"_recipient","type":"address"},{"indexed":true,"internalType":"address","name":"_token","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_serial","type":"uint256"}],"name":"NewRequest","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"approvers","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_serial","type":"uint256"}],"name":"execute","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_serial","type":"uint256"}],"name":"reject","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_recipient","type":"address"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"request","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"requests","outputs":[{"internalType":"uint256","name":"serial","type":"uint256"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"serial","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]
diff --git a/python/erc20_approval_escrow/data/ERC20ApprovalEscrow.bin b/python/erc20_approval_escrow/data/ERC20ApprovalEscrow.bin
@@ -1 +0,0 @@
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-\ No newline at end of file
diff --git a/python/setup.cfg b/python/setup.cfg
@@ -1,6 +1,6 @@
[metadata]
name = erc20-approval-escrow
-version = 0.0.4
+version = 0.0.5
description = Simple approval escrow for ERC20 spend approval
author = Louis Holbrook
author_email = dev@holbrook.no
diff --git a/solidity/ERC20ApprovalEscrow.abi.json b/solidity/ERC20ApprovalEscrow.abi.json
@@ -1 +0,0 @@
-[{"inputs":[{"internalType":"address[]","name":"_approvers","type":"address[]"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"serial","type":"uint256"}],"name":"NewExecution","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"serial","type":"uint256"}],"name":"NewRejection","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_sender","type":"address"},{"indexed":true,"internalType":"address","name":"_recipient","type":"address"},{"indexed":true,"internalType":"address","name":"_token","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_serial","type":"uint256"}],"name":"NewRequest","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"approvers","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_serial","type":"uint256"}],"name":"execute","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_serial","type":"uint256"}],"name":"reject","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_recipient","type":"address"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"request","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"requests","outputs":[{"internalType":"uint256","name":"serial","type":"uint256"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"serial","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]
diff --git a/solidity/ERC20ApprovalEscrow.bin b/solidity/ERC20ApprovalEscrow.bin
@@ -1 +0,0 @@
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-\ No newline at end of file
diff --git a/solidity/ERC20ApprovalEscrow.sol b/solidity/ERC20ApprovalEscrow.sol
@@ -1,75 +0,0 @@
-pragma solidity >=0.6.12;
-
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-contract ERC20ApprovalEscrow {
- struct Transaction {
- uint256 serial;
- address sender;
- address recipient;
- address token;
- uint256 value;
- }
- uint256 public serial;
- mapping(uint256 => Transaction) public requests;
- mapping(address => bool) public approvers;
-
- event NewRequest(address indexed _sender, address indexed _recipient, address indexed _token, uint256 _value, uint256 _serial);
- event NewExecution(uint256 serial);
- event NewRejection(uint256 serial);
-
- constructor(address[] memory _approvers) public {
- for (uint i = 0; i < _approvers.length; i++) {
- approvers[_approvers[i]] = true;
- }
- serial = 1;
- }
-
- function request(address _recipient, address _token, uint256 _value) public returns (uint256) {
- Transaction storage txx = requests[serial];
-
- txx.serial = serial;
- txx.recipient = _recipient;
- txx.sender = msg.sender;
- txx.token = _token;
- txx.value = _value;
-
- serial++;
-
- emit NewRequest(txx.sender, txx.recipient, txx.token, txx.value, txx.serial);
-
- return txx.serial;
- }
-
- function execute(uint256 _serial) public returns (bool) {
- require(approvers[msg.sender], 'ERR_NO_ACCESS');
-
- Transaction storage txx = requests[_serial];
- require(txx.serial > 0, 'ERR_INVALID_REQUEST');
-
- (bool success, bytes memory _) = txx.token.call(abi.encodeWithSignature("transferFrom(address,address,uint256)", txx.sender, txx.recipient, txx.value));
- assert(success);
-
- emit NewExecution(txx.serial);
-
- delete requests[txx.serial];
-
- return success;
- }
-
- function reject(uint256 _serial) public returns (bool) {
- require(approvers[msg.sender], 'ERR_NO_ACCESS');
-
- Transaction storage txx = requests[_serial];
- require(txx.serial > 0, 'ERR_INVALID_REQUEST');
-
- (bool success, bytes memory _) = txx.token.call(abi.encodeWithSignature("transferFrom(address,address,uint256)", txx.sender, txx.sender, txx.value));
- assert(success);
-
- emit NewRejection(txx.serial);
-
- delete requests[txx.serial];
-
- return success;
- }
-}
