Fix pysha break

* defaults to 'latest'

.gitignore

@@ -0,0 +1,10 @@
+__pycache__
+*.pyc
+dist/
+build/
+gmon.out
+*.egg-info
+.venv/
+.idea
+solidity/*.json
+solidity/*.bin

.gitlab-ci.yml

@@ -0,0 +1,67 @@
+stages:
+  - test
+  - run-coverage
+  - slither-analyzer
+
+
+variables:
+  PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
+
+cache:
+  paths:
+    - .cache/pip
+    - venv/
+
+before_script:
+  - python -V               # Print out python version for debugging
+  - pip install virtualenv
+  - virtualenv venv
+  - source venv/bin/activate
+
+test:
+  image: registry.gitlab.com/grassrootseconomics/cic-base-images/ci-solc-python:latest
+  script: 
+      # build abi
+      - 'echo "Running Solc Version: $(solc --version)"'
+      - cd solidity 
+      - solc --evm-version=byzantium GiftableToken.sol --abi | awk 'NR>3' > GiftableToken.abi.json
+      # build bin
+      - solc GiftableToken.sol --bin | awk 'NR>3' > GiftableToken.bin && 
+        truncate -s "$((`stat -t -c "%s" GiftableToken.bin`-1))" GiftableToken.bin
+      # install test dependencies
+      - cd ../python 
+      - export PYTHONPATH=.
+      - pip install --extra-index-url https://pip.grassrootseconomics.net 
+        --extra-index-url https://gitlab.com/api/v4/projects/27624814/packages/pypi/simple 
+        -r requirements.txt -r test_requirements.txt 
+      # run tests
+      - bash run_tests.sh
+
+run-coverage:
+  stage: test
+  image: registry.gitlab.com/grassrootseconomics/cic-base-images/ci-solc-python:latest
+  script:
+    - cd python 
+    - export PYTHONPATH=.
+    - pip install --extra-index-url https://pip.grassrootseconomics.net 
+        --extra-index-url https://gitlab.com/api/v4/projects/27624814/packages/pypi/simple 
+        -r requirements.txt -r test_requirements.txt 
+    -  pip install pytest pytest-cov
+    - coverage run -m pytest
+    - coverage html
+    - coverage report --fail-under=90
+    
+  coverage: '/^TOTAL.+?(\d+\%)$/'
+  artifacts:
+    reports:
+      cobertura: python/htmlcov/index.html
+
+slither-analyzer:
+  image: registry.gitlab.com/grassrootseconomics/cic-base-images/ci-solc-python:latest
+  allow_failure: true
+  script: 
+    - cd solidity
+    - slither GiftableToken.sol
+    - slither GiftableToken.sol --print human-summary
+
+

Dockerfile

@@ -1,28 +0,0 @@
-FROM ethereum/solc:0.6.12
-
-FROM python:3.8.6-alpine
-
-COPY --from=0 /usr/bin/solc /usr/bin/solc
-
-RUN apk update &&\
-	apk add gcc bash musl-dev
-
-WORKDIR /usr/src
-
-# Try to keep everything above here re-usable!
-
-COPY ./solidity/ /usr/src/giftable_erc20_token/solidity/
-COPY ./python/ /usr/src/giftable_erc20_token/python/
-
-RUN cd giftable_erc20_token/solidity && \
-	solc GiftableToken.sol --abi | awk 'NR>3' > GiftableToken.abi.json
-
-RUN cd giftable_erc20_token/solidity && \
-	solc GiftableToken.sol --bin | awk 'NR>3' > GiftableToken.bin && \
-	truncate -s "$((`stat -t -c "%s" GiftableToken.bin`-1))" GiftableToken.bin
-
-RUN cd giftable_erc20_token/python && \
-	pip install --extra-index-url https://pip.grassrootseconomics.net:8433 .
-
-# To deploy:
-# giftable-token-deploy --contracts-dir giftable_erc20_token/solidity/ <amount>

LICENSE

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
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+
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+    it under the terms of the GNU Affero General Public License as published by
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+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
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+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

WAIVER

@@ -0,0 +1,17 @@
+# Copyright waiver for the python package "eth-erc20"
+
+I dedicate any and all copyright interest in this software to the
+public domain. I make this dedication for the benefit of the public at
+large and to the detriment of my heirs and successors. I intend this
+dedication to be an overt act of relinquishment in perpetuity of all
+present and future rights to this software under copyright law.
+
+To the best of my knowledge and belief, my contributions are either
+originally authored by me or are derived from prior works which I have
+verified are also in the public domain and are not subject to claims
+of copyright by other parties.
+
+To the best of my knowledge and belief, no individual, business,
+organization, government, or other entity has any copyright interest
+in my contributions, and I affirm that I will not make contributions
+that are otherwise encumbered.

WAIVER.asc

@@ -0,0 +1,29 @@
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python/.coveragerc

@@ -0,0 +1,7 @@
+[run]
+branch = True
+[report]
+omit = .venv/*
+        **/runnable/*.py
+[html]
+

python/CHANGELOG

@@ -1,3 +1,63 @@
+* 0.7.5
+	- Factor out token publish method in unittest fixture
+* 0.7.4
+	- Add missing unittest module to python package
+* 0.7.3
+	- Add ERC5679Ext20 fills
+* 0.7.2
+	- Update python classifiers
+	- Upgrade to beta
+* 0.7.1
+	- Upgrade deps
+* 0.7.0
+	- Implement proper burner interface method
+* 0.6.2
+	- Add Giftable Token contract metadata
+* 0.6.1
+	- Add explicit burn (reduces supply) to giftable token
+* 0.6.0
+	- Add token expiry to giftable token
+* 0.5.6
+	- Remove name and symbol lookup
+	- Remove decimals lookup for raw output
+* 0.5.5
+	- Implement chainlib-gen for giftable token
+* 0.5.4
+	- Enable setting sender address on contract read calls
+* 0.5.3
+	- Fix giftable token cli commands
+* 0.5.2
+	- Add block height to balance call
+* 0.5.1
+	- Change license to AGPL3 and copyright waived to public domain
+* 0.5.0
+	- Upgrade dependencies
+* 0.4.1
+	- Implement chainlib 0.4.x for giftable token
+	- Fix broken inputs in erc20 cli tools
+* 0.4.0
+	- Implement chainlib 0.3.0
+* 0.3.1
+	- Upgrade chainlib to 0.2.0
+* 0.1.10
+	- Apply transfer ownership protection in GiftableToken contract
+* 0.1.9
+	- Add statictoken contract
+* 0.0.10
+	- Upgrade chainlib dependency, providing customizable jsonrpc id
+	- Move to chainlib-eth
+* 0.0.7
+	- Implement keystore signing.
+	- Change makefile to compile contract for Byzantium.
+	- Change mint method name to mintTo
+	- Add add minter executable script
+* 0.0.6
+	- Rename contracts-dir flag to abi-dir
+	- Use package data dir as default abi dir
+* 0.0.5
+	- Add token owner flag to deploy script
+* 0.0.4
+	- Bundle abi in data subfolder
 * 0.0.3
 	- Add gift executable
 * 0.0.2

python/LICENSE

@@ -1,45 +1,661 @@
-                        Bprotocol Foundation (Bancor) LICENSE
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
 
-1. SUBJECT TO THE PROVISIONS SET FORTH HEREIN, INCLUDING “EFFECTIVE DATE”, YOU CAN
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
-   USE THIS CODE, FILE AND/OR SOFTWARE (“SOFTWARE”) ONLY IN CONNECTION WITH THE
+ Everyone is permitted to copy and distribute verbatim copies
-   BANCOR LIQUIDITY NETWORK AND/OR THE USE OF BNT ("PERMITTED USE"). ANY OTHER USE IS
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-   PROHIBITED UNLESS THE USER SHALL RECEIVE AN EXPLICIT PRIOR WRITTEN APPROVAL FROM
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-   THIS REGARD), WHICH APPROVAL, IF GIVEN, MAY REQUIRE THE OBTAINMENT OF SEPARATE
-   LICENSE UNDER A DIFFERENT LICENSING MODEL. USING THIS SOFTWARE NOT IN THE FRAME OF
-   SUCH PERMITTED USE MAY, AMONG OTHERS, ALSO BREACH PATENT RIGHTS CONCERNING PATENTS
-   WHICH ARE EMBODIED/INCORPORATED/USED IN THIS SOFTWARE.
 
-2. ANY SUCH PERMITTED USE SHOULD ALSO COMPLY WITH THE TERMS BELOW.
+                            Preamble
 
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python/MANIFEST.in

@@ -0,0 +1 @@
+include **/data/ERC20.json **/data/GiftableToken.json **/data/GiftableToken.bin *requirements.txt CHANGELOG LICENSE WAIVER WAIVER.asc **/data/.chainlib 

python/README.test

@@ -0,0 +1,3 @@
+On arch, Python.h is in non-standard location, which may cause pip install -r test_requirements to fail.
+
+If so, set env CFLAGS=`pkg-config --cflags python3`

python/VERSION

@@ -1 +1 @@
-0.0.1
+0.0.10

python/WAIVER

@@ -0,0 +1,17 @@
+# Copyright waiver for the python package "eth-erc20"
+
+I dedicate any and all copyright interest in this software to the
+public domain. I make this dedication for the benefit of the public at
+large and to the detriment of my heirs and successors. I intend this
+dedication to be an overt act of relinquishment in perpetuity of all
+present and future rights to this software under copyright law.
+
+To the best of my knowledge and belief, my contributions are either
+originally authored by me or are derived from prior works which I have
+verified are also in the public domain and are not subject to claims
+of copyright by other parties.
+
+To the best of my knowledge and belief, no individual, business,
+organization, government, or other entity has any copyright interest
+in my contributions, and I affirm that I will not make contributions
+that are otherwise encumbered.

python/WAIVER.asc

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python/eth_erc20/__init__.py

@@ -0,0 +1 @@
+from .erc20 import ERC20

python/eth_erc20/data/ERC20.json

@@ -0,0 +1 @@
+[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_owner","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"TransferFrom","type":"event"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

python/eth_erc20/erc20.py

@@ -0,0 +1,287 @@
+# standard imports
+import logging
+
+# external imports
+from chainlib.eth.constant import ZERO_ADDRESS
+from chainlib.eth.contract import (
+    ABIContractEncoder,
+    ABIContractDecoder,
+    ABIContractType,
+    abi_decode_single,
+)
+from chainlib.eth.jsonrpc import to_blockheight_param
+from chainlib.eth.error import RequestMismatchException
+from chainlib.eth.tx import (
+    TxFactory,
+    TxFormat,
+)
+from chainlib.jsonrpc import JSONRPCRequest
+from chainlib.block import BlockSpec
+from hexathon import (
+    add_0x,
+    strip_0x,
+)
+
+logg = logging.getLogger()
+
+
+class ERC20(TxFactory):
+    
+
+    def balance_of(self, contract_address, address, sender_address=ZERO_ADDRESS, id_generator=None, height=BlockSpec.LATEST):
+        j = JSONRPCRequest(id_generator)
+        o = j.template()
+        o['method'] = 'eth_call'
+        enc = ABIContractEncoder()
+        enc.method('balanceOf')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.address(address)
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address)
+        tx = self.set_code(tx, data)
+        o['params'].append(self.normalize(tx))
+        height = to_blockheight_param(height)
+        o['params'].append(height)
+        o = j.finalize(o)
+        return o
+
+
+    def balance(self, contract_address, address, sender_address=ZERO_ADDRESS, id_generator=None):
+        return self.balance_of(contract_address, address, sender_address=sender_address, id_generator=id_generator)
+
+
+    def symbol(self, contract_address, sender_address=ZERO_ADDRESS, id_generator=None):
+        j = JSONRPCRequest(id_generator)
+        o = j.template()
+        o['method'] = 'eth_call'
+        enc = ABIContractEncoder()
+        enc.method('symbol')
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address)
+        tx = self.set_code(tx, data)
+        o['params'].append(self.normalize(tx))
+        o['params'].append('latest')
+        o = j.finalize(o)
+        return o
+
+
+    def name(self, contract_address, sender_address=ZERO_ADDRESS, id_generator=None):
+        j = JSONRPCRequest(id_generator)
+        o = j.template()
+        o['method'] = 'eth_call'
+        enc = ABIContractEncoder()
+        enc.method('name')
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address)
+        tx = self.set_code(tx, data)
+        o['params'].append(self.normalize(tx))
+        o['params'].append('latest')
+        o = j.finalize(o)
+        return o
+
+    
+    def decimals(self, contract_address, sender_address=ZERO_ADDRESS, id_generator=None):
+        j = JSONRPCRequest(id_generator)
+        o = j.template()
+        o['method'] = 'eth_call'
+        enc = ABIContractEncoder()
+        enc.method('decimals')
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address)
+        tx = self.set_code(tx, data)
+        o['params'].append(self.normalize(tx))
+        o['params'].append('latest')
+        o = j.finalize(o)
+        return o
+
+
+    def total_supply(self, contract_address, sender_address=ZERO_ADDRESS, id_generator=None):
+        j = JSONRPCRequest(id_generator)
+        o = j.template()
+        o['method'] = 'eth_call'
+        enc = ABIContractEncoder()
+        enc.method('totalSupply')
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address)
+        tx = self.set_code(tx, data)
+        o['params'].append(self.normalize(tx))
+        o['params'].append('latest')
+        o = j.finalize(o)
+        return o
+
+
+    def allowance(self, contract_address, holder_address, spender_address, sender_address=ZERO_ADDRESS, id_generator=None):
+        j = JSONRPCRequest(id_generator)
+        o = j.template()
+        o['method'] = 'eth_call'
+        enc = ABIContractEncoder()
+        enc.method('allowance')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.ADDRESS)
+        enc.address(holder_address)
+        enc.address(spender_address)
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address)
+        tx = self.set_code(tx, data)
+        o['params'].append(self.normalize(tx))
+        o['params'].append('latest')
+        o = j.finalize(o)
+        return o
+
+
+    def transfer(self, contract_address, sender_address, recipient_address, value, tx_format=TxFormat.JSONRPC, id_generator=None):
+        enc = ABIContractEncoder()
+        enc.method('transfer')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.UINT256)
+        enc.address(recipient_address)
+        enc.uint256(value)
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format, id_generator=id_generator)
+        return tx
+
+
+    def transfer_from(self, contract_address, sender_address, holder_address, recipient_address, value, tx_format=TxFormat.JSONRPC, id_generator=None):
+        enc = ABIContractEncoder()
+        enc.method('transferFrom')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.UINT256)
+        enc.address(holder_address)
+        enc.address(recipient_address)
+        enc.uint256(value)
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx
+
+
+    def approve(self, contract_address, sender_address, spender_address, value, tx_format=TxFormat.JSONRPC, id_generator=None):
+        enc = ABIContractEncoder()
+        enc.method('approve')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.UINT256)
+        enc.address(spender_address)
+        enc.uint256(value)
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx
+
+
+    @classmethod
+    def parse_symbol(self, v):
+        return abi_decode_single(ABIContractType.STRING, v)
+
+
+    @classmethod
+    def parse_name(self, v):
+        return abi_decode_single(ABIContractType.STRING, v)
+
+
+    @classmethod
+    def parse_decimals(self, v):
+        return abi_decode_single(ABIContractType.UINT256, v)
+
+
+    @classmethod
+    def parse_balance(self, v):
+        return abi_decode_single(ABIContractType.UINT256, v)
+
+
+    @classmethod
+    def parse_balance_of(self, v):
+        return self.parse_balance(v)
+
+
+    @classmethod
+    def parse_total_supply(self, v):
+        return abi_decode_single(ABIContractType.UINT256, v)
+
+
+    @classmethod
+    def parse_allowance(self, v):
+        return abi_decode_single(ABIContractType.UINT256, v)
+
+
+    @classmethod
+    def parse_transfer_request(self, v):
+        v = strip_0x(v)
+        cursor = 0
+        enc = ABIContractEncoder()
+        enc.method('transfer')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.UINT256)
+        r = enc.get()
+        l = len(r)
+        m = v[:l]
+        if m != r:
+            raise RequestMismatchException(v)
+        cursor += l
+
+        dec = ABIContractDecoder()
+        dec.typ(ABIContractType.ADDRESS)
+        dec.typ(ABIContractType.UINT256)
+        dec.val(v[cursor:cursor+64])
+        cursor += 64
+        dec.val(v[cursor:cursor+64])
+        r = dec.decode()
+        return r 
+
+
+    @classmethod
+    def parse_transfer_from_request(self, v):
+        v = strip_0x(v)
+        cursor = 0
+        enc = ABIContractEncoder()
+        enc.method('transferFrom')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.UINT256)
+        r = enc.get()
+        l = len(r)
+        m = v[:l]
+        if m != r:
+            raise RequestMismatchException(v)
+        cursor += l
+
+        dec = ABIContractDecoder()
+        dec.typ(ABIContractType.ADDRESS)
+        dec.typ(ABIContractType.ADDRESS)
+        dec.typ(ABIContractType.UINT256)
+        dec.val(v[cursor:cursor+64])
+        cursor += 64
+        dec.val(v[cursor:cursor+64])
+        cursor += 64
+        dec.val(v[cursor:cursor+64])
+        r = dec.decode()
+        return r 
+
+
+    @classmethod
+    def parse_approve_request(self, v):
+        v = strip_0x(v)
+        cursor = 0
+        enc = ABIContractEncoder()
+        enc.method('approve')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.UINT256)
+        r = enc.get()
+        l = len(r)
+        m = v[:l]
+        if m != r:
+            raise RequestMismatchException(v)
+        cursor += l
+
+        dec = ABIContractDecoder()
+        dec.typ(ABIContractType.ADDRESS)
+        dec.typ(ABIContractType.UINT256)
+        dec.val(v[cursor:cursor+64])
+        cursor += 64
+        dec.val(v[cursor:cursor+64])
+        r = dec.decode()
+        return r 

python/eth_erc20/runnable/balance.py

@@ -0,0 +1,127 @@
+#!python3
+
+"""Token balance query script
+
+.. moduleauthor:: Louis Holbrook <dev@holbrook.no>
+.. pgp:: 0826EDA1702D1E87C6E2875121D2E7BB88C2A746 
+
+"""
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# standard imports
+import sys
+import os
+import json
+import argparse
+import logging
+
+# external imports
+from hexathon import (
+        add_0x,
+        strip_0x,
+        even,
+        )
+import sha3
+
+# external imports
+import chainlib.eth.cli
+from chainlib.eth.cli.arg import (
+        Arg,
+        ArgFlag,
+        process_args,
+        )
+from chainlib.eth.cli.config import (
+        Config,
+        process_config,
+        )
+from chainlib.eth.address import to_checksum_address
+from chainlib.eth.connection import EthHTTPConnection
+from chainlib.eth.gas import (
+        OverrideGasOracle,
+        balance,
+        )
+from chainlib.chain import ChainSpec
+from chainlib.eth.cli.log import process_log
+from chainlib.eth.settings import process_settings
+from chainlib.settings import ChainSettings
+
+# local imports
+from eth_erc20 import ERC20
+
+
+def process_config_local(config, arg, args, flags):
+    recipient = None
+    address = config.get('_POSARG')
+    if address:
+        recipient = add_0x(address)
+    else:
+        recipient = stdin_arg()
+    config.add(recipient, '_RECIPIENT', False)
+    return config
+
+
+logg = logging.getLogger()
+
+arg_flags = ArgFlag()
+arg = Arg(arg_flags)
+flags = arg_flags.STD_READ | arg_flags.EXEC | arg_flags.SENDER
+
+argparser = chainlib.eth.cli.ArgumentParser()
+argparser = process_args(argparser, arg, flags)
+argparser.add_argument('address', type=str, help='Ethereum address of recipient')
+args = argparser.parse_args()
+
+logg = process_log(args, logg)
+
+config = Config()
+config = process_config(config, arg, args, flags, positional_name='address')
+config = process_config_local(config, arg, args, flags)
+logg.debug('config loaded:\n{}'.format(config))
+
+settings = ChainSettings()
+settings = process_settings(settings, config)
+logg.debug('settings loaded:\n{}'.format(settings))
+
+
+def main():
+    token_address = settings.get('EXEC')
+    conn = settings.get('CONN')
+    sender_address = settings.get('SENDER_ADDRESS')
+    g = ERC20(
+            chain_spec=settings.get('CHAIN_SPEC'),
+            gas_oracle=settings.get('GAS_ORACLE'),
+            )
+
+    # determine decimals
+    if not config.get('_RAW'):
+        decimals_o = g.decimals(token_address, sender_address=sender_address)
+        r = conn.do(decimals_o)
+        decimals = int(strip_0x(r), 16)
+        logg.info('decimals {}'.format(decimals))
+
+    # get balance
+    balance_o = g.balance(token_address, settings.get('RECIPIENT'), sender_address=sender_address)
+    r = conn.do(balance_o)
+   
+    hx = strip_0x(r)
+    balance_value = int(hx, 16)
+    if config.get('_RAW'):
+        logg.debug('balance {} = {}'.format(even(hx), balance_value))
+    else:
+        logg.debug('balance {} = {} decimals {}'.format(even(hx), balance_value, decimals))
+
+    balance_str = str(balance_value)
+    balance_len = len(balance_str)
+    if config.get('_RAW'):
+        print(balance_str)
+    else:
+        if balance_len < decimals + 1:
+            print('0.{}'.format(balance_str.zfill(decimals)))
+        else:
+            offset = balance_len-decimals
+            print('{}.{}'.format(balance_str[:offset],balance_str[offset:]))
+
+
+if __name__ == '__main__':
+    main()

python/eth_erc20/runnable/info.py

@@ -0,0 +1,149 @@
+#!python3
+
+"""Token balance query script
+
+.. moduleauthor:: Louis Holbrook <dev@holbrook.no>
+.. pgp:: 0826EDA1702D1E87C6E2875121D2E7BB88C2A746 
+
+"""
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# standard imports
+import sys
+import os
+import json
+import argparse
+import logging
+
+# external imports
+from hexathon import (
+        add_0x,
+        strip_0x,
+        even,
+        )
+import sha3
+
+# external imports
+import chainlib.eth.cli
+from chainlib.eth.cli.arg import (
+        Arg,
+        ArgFlag,
+        process_args,
+        stdin_arg,
+        )
+from chainlib.eth.cli.config import (
+        Config,
+        process_config,
+        )
+from chainlib.eth.address import to_checksum_address
+from chainlib.eth.connection import EthHTTPConnection
+from chainlib.eth.gas import (
+        OverrideGasOracle,
+        balance,
+        )
+from chainlib.chain import ChainSpec
+from chainlib.eth.settings import process_settings
+from chainlib.settings import ChainSettings
+from chainlib.eth.cli.log import process_log
+
+# local imports
+from eth_erc20 import ERC20
+
+logg = logging.getLogger()
+
+
+
+def process_config_local(config, arg, args, flags):
+    contract = None
+    try:
+        contract = config.get('_EXEC_ADDRESS')
+    except KeyError:
+        pass
+
+    if contract == None:
+        address = config.get('_POSARG')
+        if address:
+            contract = add_0x(address)
+        else:
+            contract = stdin_arg()
+
+    config.add(contract, '_CONTRACT', False)
+    return config
+
+
+arg_flags = ArgFlag()
+arg = Arg(arg_flags)
+flags = arg_flags.STD_READ | arg_flags.EXEC | arg_flags.TAB | arg_flags.SENDER 
+
+argparser = chainlib.eth.cli.ArgumentParser()
+argparser = process_args(argparser, arg, flags)
+argparser.add_argument('contract_address', type=str, help='Token contract address (may also be specified by -e)')
+args = argparser.parse_args()
+
+logg = process_log(args, logg)
+
+config = Config()
+config = process_config(config, arg, args, flags, positional_name='contract_address')
+config = process_config_local(config, arg, args, flags)
+logg.debug('config loaded:\n{}'.format(config))
+
+settings = ChainSettings()
+settings = process_settings(settings, config)
+logg.debug('settings loaded:\n{}'.format(settings))
+
+
+def main():
+    token_address = config.get('_CONTRACT')
+    conn = settings.get('CONN')
+    sender_address = settings.get('SENDER_ADDRESS')
+    g = ERC20(
+            chain_spec=settings.get('CHAIN_SPEC'),
+            gas_oracle=settings.get('GAS_ORACLE'),
+            )
+
+    outkeys = config.get('_OUTARG')
+
+    if not outkeys or 'address' in outkeys:
+        name_o = g.name(token_address, sender_address=sender_address)
+        r = conn.do(name_o)
+        token_name = g.parse_name(r)
+        s = ''
+        if not config.true('_RAW'):
+            s = 'Name: '
+        s += token_name
+        print(s)
+
+    if not outkeys or 'symbol' in outkeys:
+        symbol_o = g.symbol(token_address, sender_address=sender_address)
+        r = conn.do(symbol_o)
+        token_symbol = g.parse_symbol(r)
+        s = ''
+        if not config.true('_RAW'):
+            s = 'Symbol: '
+        s += token_symbol
+        print(s)
+
+    if not outkeys or 'decimals' in outkeys:
+        decimals_o = g.decimals(token_address, sender_address=sender_address)
+        r = conn.do(decimals_o)
+        decimals = int(strip_0x(r), 16)
+        s = ''
+        if not config.true('_RAW'):
+            s = 'Decimals: '
+        s += str(decimals)
+        print(s)
+
+    if not outkeys or 'supply' in outkeys:
+        supply_o = g.total_supply(token_address, sender_address=sender_address)
+        r = conn.do(supply_o)
+        supply = int(strip_0x(r), 16)
+        s = ''
+        if not config.true('_RAW'):
+            s = 'Supply: '
+        s += str(supply)
+        print(s)
+
+
+if __name__ == '__main__':
+    main()

python/eth_erc20/runnable/transfer.py

@@ -0,0 +1,116 @@
+#!python3
+
+"""Token transfer script
+
+.. moduleauthor:: Louis Holbrook <dev@holbrook.no>
+.. pgp:: 0826EDA1702D1E87C6E2875121D2E7BB88C2A746 
+
+"""
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# standard imports
+import os
+import io
+import json
+import argparse
+import logging
+
+# external imports
+from hexathon import (
+        add_0x,
+        strip_0x,
+        )
+import chainlib.eth.cli
+from chainlib.eth.cli.log import process_log
+from chainlib.eth.settings import process_settings
+from chainlib.settings import ChainSettings
+from chainlib.eth.cli.arg import (
+        Arg,
+        ArgFlag,
+        process_args,
+        )
+from chainlib.eth.cli.config import (
+        Config,
+        process_config,
+        )
+
+# local imports
+from eth_erc20 import ERC20
+
+logg = logging.getLogger()
+
+
+def process_config_local(config, arg, args, flags):
+    config.add(config.get('_POSARG'), '_VALUE', False)
+    return config
+
+
+arg_flags = ArgFlag()
+arg = Arg(arg_flags)
+flags = arg_flags.STD_WRITE | arg_flags.EXEC | arg_flags.WALLET
+
+argparser = chainlib.eth.cli.ArgumentParser()
+argparser = process_args(argparser, arg, flags)
+argparser.add_argument('value', type=str, help='Token value to send')
+args = argparser.parse_args()
+
+logg = process_log(args, logg)
+
+config = Config()
+config = process_config(config, arg, args, flags, positional_name='value')
+config = process_config_local(config, arg, args, flags)
+logg.debug('config loaded:\n{}'.format(config))
+
+settings = ChainSettings()
+settings = process_settings(settings, config)
+logg.debug('settings loaded:\n{}'.format(settings))
+
+
+def balance(conn, generator, token_address, address, id_generator=None):
+    o = generator.balance(token_address, address, id_generator=id_generator)
+    r = conn.do(o)
+    token_balance = generator.parse_balance(r)
+    return token_balance
+
+
+def main():
+    token_address = settings.get('EXEC')
+    signer_address = settings.get('SENDER_ADDRESS')
+    recipient = settings.get('RECIPIENT')
+    value = settings.get('VALUE')
+    conn = settings.get('CONN')
+    g = ERC20(
+            settings.get('CHAIN_SPEC'),
+            signer=settings.get('SIGNER'),
+            gas_oracle=settings.get('GAS_ORACLE'),
+            nonce_oracle=settings.get('NONCE_ORACLE'),
+            )
+    if logg.isEnabledFor(logging.DEBUG):
+        sender_balance = balance(conn, g, token_address, signer_address, id_generator=settings.get('RPC_ID_GENERATOR'))
+        recipient_balance = balance(conn, g, token_address, recipient, id_generator=settings.get('RPC_ID_GENERATOR'))
+        logg.debug('sender {} balance before: {}'.format(signer_address, sender_balance))
+        logg.debug('recipient {} balance before: {}'.format(recipient, recipient_balance))
+
+    (tx_hash_hex, o) = g.transfer(token_address, signer_address, recipient, value, id_generator=settings.get('RPC_ID_GENERATOR'))
+
+    if settings.get('RPC_SEND'):
+        conn.do(o)
+        if settings.get('WAIT'):
+            r = conn.wait(tx_hash_hex)
+            if logg.isEnabledFor(logging.DEBUG):
+                sender_balance = balance(conn, g, token_address, signer_address, id_generator=settings.get('RPC_ID_GENERATOR'))
+                recipient_balance = balance(conn, g, token_address, recipient, id_generator=settings.get('RPC_ID_GENERATOR'))
+                logg.debug('sender {} balance after: {}'.format(signer_address, sender_balance))
+                logg.debug('recipient {} balance after: {}'.format(recipient, recipient_balance))
+            if r['status'] == 0:
+                logg.critical('VM revert. Wish I could tell you more')
+                sys.exit(1)
+        print(tx_hash_hex)
+
+    else:
+        print(o['params'][0])
+
+
+if __name__ == '__main__':
+    main()

python/eth_erc20/unittest/__init__.py

@@ -0,0 +1 @@
+from .base import *

python/eth_erc20/unittest/base.py

@@ -0,0 +1,169 @@
+# standard imports
+import logging
+
+# external imports
+from chainlib.eth.unittest.ethtester import EthTesterCase
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.gas import OverrideGasOracle
+from chainlib.eth.tx import (
+        transaction,
+        receipt,
+        )
+from hexathon import strip_0x
+
+# local imports
+from eth_erc20 import ERC20
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger(__name__)
+
+
+class TestInterface:
+
+    def test_balance(self):
+        c = ERC20(self.chain_spec)
+        o = c.balance_of(self.address, self.accounts[0], sender_address=self.accounts[0])
+        r = self.conn.do(o)
+        balance = ERC20.parse_balance(r)
+        self.assertEqual(self.initial_supply, balance)
+
+
+    def test_supply(self):
+        c = ERC20(self.chain_spec)
+        o = c.total_supply(self.address, sender_address=self.accounts[0])
+        r = self.conn.do(o)
+        supply = ERC20.parse_total_supply(r)
+        self.assertEqual(self.initial_supply, supply)
+
+
+    def test_name(self):
+        c = ERC20(self.chain_spec)
+        o = c.name(self.address, sender_address=self.accounts[0])
+        r = self.conn.do(o)
+        name = ERC20.parse_name(r)
+        self.assertEqual(self.name, name)
+
+
+    def test_symbol(self):
+        c = ERC20(self.chain_spec)
+        o = c.symbol(self.address, sender_address=self.accounts[0])
+        r = self.conn.do(o)
+        symbol = ERC20.parse_symbol(r)
+        self.assertEqual(self.symbol, symbol)
+
+
+    def test_direct_transfer(self):
+        nonce_oracle = RPCNonceOracle(self.accounts[0], conn=self.conn)
+        gas_oracle = OverrideGasOracle(limit=100000, conn=self.conn)
+        c = ERC20(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
+
+        (tx_hash, o) = c.transfer(self.address, self.accounts[0], self.accounts[1], 1000)
+        self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 1)
+
+        o = c.balance_of(self.address, self.accounts[0], sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        balance = c.parse_balance(r)
+        self.assertEqual(balance, self.initial_supply - 1000)
+
+        o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        balance = c.parse_balance(r)
+        self.assertEqual(balance, 1000)
+
+        o = transaction(tx_hash)
+        r = self.rpc.do(o)
+        data = c.parse_transfer_request(r['data'])
+        self.assertEqual(data[0], strip_0x(self.accounts[1]))
+        self.assertEqual(data[1], 1000)
+
+
+    def test_transfer_from(self):
+        nonce_oracle = RPCNonceOracle(self.accounts[0], conn=self.conn)
+        gas_oracle = OverrideGasOracle(limit=100000, conn=self.conn)
+        c = ERC20(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
+        (tx_hash, o) = c.approve(self.address, self.accounts[0], self.accounts[1], 1000)
+        self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 1)
+
+        o = c.allowance(self.address, self.accounts[0], self.accounts[1], sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        allowance = c.parse_allowance(r)
+        self.assertEqual(allowance, 1000)
+
+        o = transaction(tx_hash)
+        r = self.rpc.do(o)
+        data = c.parse_approve_request(r['data'])
+        self.assertEqual(data[0], strip_0x(self.accounts[1]))
+        self.assertEqual(data[1], 1000)
+
+        nonce_oracle = RPCNonceOracle(self.accounts[1], conn=self.conn)
+        c = ERC20(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
+        (tx_hash, o) = c.transfer_from(self.address, self.accounts[1], self.accounts[0], self.accounts[2], 1001)
+        r = self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 0)
+
+        o = transaction(tx_hash)
+        r = self.rpc.do(o)
+        data = c.parse_transfer_from_request(r['data'])
+        self.assertEqual(data[0], strip_0x(self.accounts[0]))
+        self.assertEqual(data[1], strip_0x(self.accounts[2]))
+        self.assertEqual(data[2], 1001)
+
+        (tx_hash, o) = c.transfer_from(self.address, self.accounts[1], self.accounts[0], self.accounts[2], 1000)
+        r = self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 1)
+
+        o = c.balance_of(self.address, self.accounts[0], sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        balance = c.parse_balance(r)
+        self.assertEqual(balance, self.initial_supply - 1000)
+
+        o = c.balance_of(self.address, self.accounts[2], sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        balance = c.parse_balance(r)
+        self.assertEqual(balance, 1000)
+
+
+    def test_revoke_approve(self):
+        nonce_oracle = RPCNonceOracle(self.accounts[0], conn=self.conn)
+        gas_oracle = OverrideGasOracle(limit=100000, conn=self.conn)
+        c = ERC20(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
+        (tx_hash, o) = c.approve(self.address, self.accounts[0], self.accounts[1], 1000)
+        r = self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 1)
+        
+        (tx_hash, o) = c.approve(self.address, self.accounts[0], self.accounts[1], 999)
+        r = self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 0)
+     
+        (tx_hash, o) = c.approve(self.address, self.accounts[0], self.accounts[1], 0)
+        r = self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 1)
+ 
+        o = c.allowance(self.address, self.accounts[0], self.accounts[1], sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        allowance = c.parse_allowance(r)
+        self.assertEqual(allowance, 0)
+
+        nonce_oracle = RPCNonceOracle(self.accounts[1], conn=self.conn)
+        c = ERC20(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
+        (tx_hash, o) = c.transfer_from(self.address, self.accounts[1], self.accounts[0], self.accounts[2], 1)
+        r = self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 0)

python/giftable_erc20_token/__init__.py

@@ -0,0 +1,4 @@
+from .factory import GiftableToken
+from .factory import bytecode
+from .factory import create
+from .factory import args

python/giftable_erc20_token/data/StaticToken.json

@@ -0,0 +1 @@
+[{"inputs":[{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"uint8","name":"_decimals","type":"uint8"},{"internalType":"uint256","name":"_supply","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_owner","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"TransferFrom","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"_sum","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

python/giftable_erc20_token/data/StaticToken.metadata.json

@@ -0,0 +1 @@
+{"compiler":{"version":"0.8.18+commit.87f61d96"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"uint8","name":"_decimals","type":"uint8"},{"internalType":"uint256","name":"_supply","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_owner","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"TransferFrom","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"_sum","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}],"devdoc":{"kind":"dev","methods":{},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"compilationTarget":{"StaticToken.sol":"StaticToken"},"evmVersion":"byzantium","libraries":{},"metadata":{"bytecodeHash":"ipfs"},"optimizer":{"enabled":false,"runs":200},"remappings":[]},"sources":{"StaticToken.sol":{"keccak256":"0xfb467ccf3465a3f2c8ad23bc4933f7e1ac1964d7ee1aa185e72e4698b015b5b3","license":"AGPL-3.0-or-later","urls":["bzz-raw://6c2230ba6ddadf062f5f3391f2a852da8617fbefd0c0511d9bc372c6c66c6424","dweb:/ipfs/QmWSYF3WxmKyDEHp3NZMWjE6Yu7mY6XVB6tuTeFKpjxL9P"]}},"version":1}

python/giftable_erc20_token/data/__init__.py

@@ -0,0 +1,3 @@
+import os
+
+data_dir = os.path.realpath(os.path.dirname(__file__))

python/giftable_erc20_token/factory.py

@@ -0,0 +1,170 @@
+# standard imports
+import os
+import logging
+
+# external imports
+from chainlib.eth.tx import (
+        TxFactory,
+        TxFormat,
+        )
+from chainlib.hash import keccak256_string_to_hex
+from chainlib.eth.contract import (
+        ABIContractEncoder,
+        ABIContractType,
+        )
+from chainlib.eth.constant import ZERO_ADDRESS
+from chainlib.jsonrpc import JSONRPCRequest
+from hexathon import add_0x
+
+# local imports
+from giftable_erc20_token.data import data_dir
+from eth_erc20 import ERC20
+
+logg = logging.getLogger(__name__)
+
+
+class GiftableToken(ERC20):
+
+    __abi = None
+    __bytecode = None
+
+    def constructor(self, sender_address, name, symbol, decimals, expire=0, tx_format=TxFormat.JSONRPC, version=None):
+        code = self.cargs(name, symbol, decimals, expire=expire)
+        tx = self.template(sender_address, None, use_nonce=True)
+        tx = self.set_code(tx, code)
+        return self.finalize(tx, tx_format)
+
+
+    @staticmethod
+    def cargs(name, symbol, decimals, expire=0, version=None):
+        if expire == None:
+            expire = 0
+        code = GiftableToken.bytecode(version=version)
+        enc = ABIContractEncoder()
+        enc.string(name)
+        enc.string(symbol)
+        enc.uint256(decimals)
+        enc.uint256(expire)
+        args = enc.get()
+        code += args
+        logg.debug('constructor code: ' + args)
+        return code
+
+
+    @staticmethod
+    def gas(code=None):
+        return 2000000
+
+
+    @staticmethod
+    def abi():
+        if GiftableToken.__abi == None:
+            f = open(os.path.join(data_dir, 'GiftableToken.json'), 'r')
+            GiftableToken.__abi = json.load(f)
+            f.close()
+        return GiftableToken.__abi
+
+
+    @staticmethod
+    def bytecode(version=None):
+        if GiftableToken.__bytecode == None:
+            f = open(os.path.join(data_dir, 'GiftableToken.bin'))
+            GiftableToken.__bytecode = f.read()
+            f.close()
+        return GiftableToken.__bytecode
+
+
+    def add_minter(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
+        enc = ABIContractEncoder()
+        enc.method('addMinter')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.address(address)
+        data = enc.get()
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx
+
+
+    def remove_minter(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
+        enc = ABIContractEncoder()
+        enc.method('removeMinter')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.address(address)
+        data = enc.get()
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx
+
+
+    def mint_to(self, contract_address, sender_address, address, value, tx_format=TxFormat.JSONRPC):
+        enc = ABIContractEncoder()
+        enc.method('mintTo')
+        enc.typ(ABIContractType.ADDRESS)
+        enc.typ(ABIContractType.UINT256)
+        enc.address(address)
+        enc.uint256(value)
+        data = enc.get()
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx
+
+
+    def burn(self, contract_address, sender_address, value, tx_format=TxFormat.JSONRPC):
+        enc = ABIContractEncoder()
+        enc.method('burn')
+        enc.typ(ABIContractType.UINT256)
+        enc.uint256(value)
+        data = enc.get()
+        tx = self.template(sender_address, contract_address, use_nonce=True)
+        tx = self.set_code(tx, data)
+        tx = self.finalize(tx, tx_format)
+        return tx
+
+
+    def burned(self, contract_address, sender_address=ZERO_ADDRESS, id_generator=None):
+        j = JSONRPCRequest(id_generator)
+        o = j.template()
+        o['method'] = 'eth_call'
+        enc = ABIContractEncoder()
+        enc.method('totalBurned')
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address)
+        tx = self.set_code(tx, data)
+        o['params'].append(self.normalize(tx))
+        o['params'].append('latest')
+        o = j.finalize(o)
+        return o
+
+
+    def total_minted(self, contract_address, sender_address=ZERO_ADDRESS, id_generator=None):
+        j = JSONRPCRequest(id_generator)
+        o = j.template()
+        o['method'] = 'eth_call'
+        enc = ABIContractEncoder()
+        enc.method('totalMinted')
+        data = add_0x(enc.get())
+        tx = self.template(sender_address, contract_address)
+        tx = self.set_code(tx, data)
+        o['params'].append(self.normalize(tx))
+        o['params'].append('latest')
+        o = j.finalize(o)
+        return o
+
+
+def bytecode(**kwargs):
+    return GiftableToken.bytecode(version=kwargs.get('version'))
+
+
+def create(**kwargs):
+    return GiftableToken.cargs(kwargs['name'], kwargs['symbol'], kwargs['decimals'], expire=kwargs.get('expire'), version=kwargs.get('version'))
+
+
+def args(v):
+    if v == 'create':
+        return (['name', 'symbol', 'decimals'], ['expire', 'version'],)
+    elif v == 'default' or v == 'bytecode':
+        return ([], ['version'],)
+    raise ValueError('unknown command: ' + v)

python/giftable_erc20_token/runnable/deploy.py

@@ -1,86 +0,0 @@
-"""Deploys giftable token, and optionally gifts a set amount to all accounts in wallet
-
-.. 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
-import web3
-
-logging.basicConfig(level=logging.WARNING)
-logg = logging.getLogger()
-
-logging.getLogger('web3').setLevel(logging.WARNING)
-logging.getLogger('urllib3').setLevel(logging.WARNING)
-
-argparser = argparse.ArgumentParser()
-argparser.add_argument('-p', '--provider', dest='p', default='http://localhost:8545', type=str, help='Web3 provider url (http only)')
-argparser.add_argument('-n', '--name', dest='n', default='Giftable Token', type=str, help='Token name')
-argparser.add_argument('-s', '--symbol', dest='s', default='GFT', type=str, help='Token symbol')
-argparser.add_argument('-d', '--decimals', dest='d', default=18, type=int, help='Token decimals')
-argparser.add_argument('-a', '--account', dest='a', action='append', type=str, help='Account to fund')
-argparser.add_argument('-m', '--minter', dest='m', action='append', type=str, help='Minter to add')
-argparser.add_argument('--contracts-dir', dest='contracts_dir', type=str, default='.', help='Directory containing bytecode and abi')
-argparser.add_argument('-v', action='store_true', help='Be verbose')
-argparser.add_argument('amount', type=int, help='Initial token supply (will be owned by contract creator)')
-args = argparser.parse_args()
-
-if args.v:
-    logg.setLevel(logging.DEBUG)
-
-def main():
-    w3 = web3.Web3(web3.Web3.HTTPProvider(args.p))
-
-    f = open(os.path.join(args.contracts_dir, 'GiftableToken.abi.json'), 'r')
-    abi = json.load(f)
-    f.close()
-
-    f = open(os.path.join(args.contracts_dir, 'GiftableToken.bin'), 'r')
-    bytecode = f.read()
-    f.close()
-
-    w3.eth.defaultAccount = w3.eth.accounts[0]
-
-    c = w3.eth.contract(abi=abi, bytecode=bytecode)
-    tx_hash = c.constructor(args.n, args.s, args.d).transact()
-    rcpt = w3.eth.getTransactionReceipt(tx_hash)
-    address = rcpt.contractAddress
-    c = w3.eth.contract(abi=abi, address=address)
-
-    logg.debug('construct tx {} address {}'.format(tx_hash.hex(), address))
-
-    balance = c.functions.balanceOf(w3.eth.defaultAccount).call()
-    logg.info('balance {}: {} {}'.format(w3.eth.defaultAccount, balance, tx_hash))
-
-
-    if args.a != None:
-        for a in args.a:
-            if a == w3.eth.defaultAccount:
-                continue
-            tx_hash_mint = c.functions.mint(args.amount).transact()
-            tx_hash_transfer = c.functions.transfer(a, args.amount).transact()
-            rcpt = w3.eth.getTransactionReceipt(tx_hash)
-            balance = c.functions.balanceOf(a).call()
-            logg.info('balance {}: {}'.format(a, balance))
-
-    if args.m != None:
-        for a in args.m:
-            if a == w3.eth.defaultAccount:
-                continue
-            tx_hash_minter = c.functions.addMinter(a).transact()
-            logg.info('minter {}'.format(a))
-
-    print(address)
-
-
-if __name__ == '__main__':
-    main()

python/giftable_erc20_token/runnable/gift.py

@@ -8,52 +8,102 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 # standard imports
+import sys
 import os
 import json
 import argparse
 import logging
+import time
 
-# third-party imports
+# external imports
-import web3
+import chainlib.eth.cli
+from chainlib.eth.tx import receipt
+from chainlib.chain import ChainSpec
+from chainlib.eth.connection import EthHTTPConnection
+from chainlib.eth.address import to_checksum_address
+from hexathon import (
+        strip_0x,
+        add_0x,
+        )
+from chainlib.settings import ChainSettings
+from chainlib.eth.cli.log import process_log
+from chainlib.eth.settings import process_settings
+from chainlib.eth.cli.arg import (
+        Arg,
+        ArgFlag,
+        process_args,
+        )
+from chainlib.eth.cli.config import (
+        Config,
+        process_config,
+        )
+
+# local imports
+from giftable_erc20_token import GiftableToken
 
-logging.basicConfig(level=logging.WARNING)
 logg = logging.getLogger()
 
-logging.getLogger('web3').setLevel(logging.WARNING)
-logging.getLogger('urllib3').setLevel(logging.WARNING)
 
-argparser = argparse.ArgumentParser()
+def process_config_local(config, arg, args, flags):
-argparser.add_argument('-p', '--provider', dest='p', default='http://localhost:8545', type=str, help='Web3 provider url (http only)')
+    config.add(config.get('_POSARG'), '_VALUE', False)
-argparser.add_argument('-t', '--token-address', required='True', dest='t', type=str, help='Giftable token address')
+    return config
-argparser.add_argument('-m', '--minter-address', dest='m', type=str, help='Minter account address')
+
-argparser.add_argument('--contracts-dir', dest='contracts_dir', type=str, default='.', help='Directory containing bytecode and abi')
+
-argparser.add_argument('-v', action='store_true', help='Be verbose')
+arg_flags = ArgFlag()
-argparser.add_argument('-r', '--recipient-address', dest='r', type=str, help='Recipient account address')
+arg = Arg(arg_flags)
-argparser.add_argument('amount', type=int, help='Amount of tokens to mint and gift')
+flags = arg_flags.STD_WRITE | arg_flags.WALLET | arg_flags.EXEC
+
+argparser = chainlib.eth.cli.ArgumentParser()
+argparser = process_args(argparser, arg, flags)
+argparser.add_argument('value', type=str, help='Token value to send')
 args = argparser.parse_args()
 
-if args.v:
+logg = process_log(args, logg)
-    logg.setLevel(logging.DEBUG)
+
+config = Config()
+config = process_config(config, arg, args, flags, positional_name='value')
+config = process_config_local(config, arg, args, flags)
+logg.debug('config loaded:\n{}'.format(config))
+
+settings = ChainSettings()
+settings = process_settings(settings, config)
+logg.debug('settings loaded:\n{}'.format(settings))
+
 
 def main():
-    w3 = web3.Web3(web3.Web3.HTTPProvider(args.p))
+    token_address = settings.get('EXEC')
+    signer_address = settings.get('SENDER_ADDRESS')
+    recipient = settings.get('RECIPIENT')
+    value = settings.get('VALUE')
+    conn = settings.get('CONN')
 
-    f = open(os.path.join(args.contracts_dir, 'GiftableToken.abi.json'), 'r')
+    c = GiftableToken(
-    abi = json.load(f)
+            settings.get('CHAIN_SPEC'),
-    f.close()
+            signer=settings.get('SIGNER'),
+            gas_oracle=settings.get('GAS_ORACLE'),
+            nonce_oracle=settings.get('NONCE_ORACLE'),
+            )
 
-    c = w3.eth.contract(abi=abi, address=args.t)
+    (tx_hash_hex, o) = c.mint_to(
-    if args.m != None:
+            token_address,
-        w3.eth.defaultAccount = web3.Web3.toChecksumAddress(args.m)
+            signer_address,
+            recipient,
+            value,
+            )
+    if settings.get('RPC_SEND'):
+        conn.do(o)
+        if settings.get('WAIT'):
+            r = conn.wait(tx_hash_hex)
+            if r['status'] == 0:
+                sys.stderr.write('EVM revert. Wish I had more to tell you')
+                sys.exit(1)
+
+        logg.info('mint to {} tx {}'.format(recipient, tx_hash_hex))
+
+        print(tx_hash_hex)
     else:
-        w3.eth.defaultAccount = w3.eth.accounts[0]
+        print(o)
 
-    recipient = w3.eth.defaultAccount
-    if args.r != None:
-        recipient = web3.Web3.toChecksumAddress(args.r)
-
-    c.functions.mint(args.amount).transact()
-    tx = c.functions.transfer(recipient, args.amount).transact()
-
-    print(tx.hex())
 
+if __name__ == '__main__':
+    main()

python/giftable_erc20_token/runnable/minter.py

@@ -0,0 +1,124 @@
+"""Add minter to token contact
+
+.. moduleauthor:: Louis Holbrook <dev@holbrook.no>
+.. pgp:: 0826EDA1702D1E87C6E2875121D2E7BB88C2A746 
+
+"""
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# standard imports
+import sys
+import os
+import json
+import argparse
+import logging
+import time
+
+# external imports
+import chainlib.eth.cli
+from chainlib.eth.tx import receipt
+from chainlib.settings import ChainSettings
+from chainlib.eth.cli.log import process_log
+from chainlib.eth.settings import process_settings
+from chainlib.eth.address import to_checksum_address
+from chainlib.eth.cli.arg import (
+        Arg,
+        ArgFlag,
+        process_args,
+        )
+from chainlib.eth.cli.config import (
+        Config,
+        process_config,
+        )
+
+from hexathon import (
+        strip_0x,
+        add_0x,
+        )
+
+# local imports
+from giftable_erc20_token import GiftableToken
+
+logg = logging.getLogger()
+
+
+def process_config_local(config, arg, args, flags):
+    config.add(args.rm, '_RM', False)
+    config.add(add_0x(args.minter_address[0]), '_MINTER_ADDRESS', False)
+    return config
+
+
+arg_flags = ArgFlag()
+arg = Arg(arg_flags)
+flags = arg_flags.STD_WRITE | arg_flags.EXEC | arg_flags.WALLET
+
+argparser = chainlib.eth.cli.ArgumentParser()
+argparser = process_args(argparser, arg, flags)
+argparser.add_argument('--rm', action='store_true', help='Remove entry')
+argparser.add_argument('minter_address', type=str, help='Address to add or remove as minter')
+args = argparser.parse_args()
+
+logg = process_log(args, logg)
+
+config = Config()
+config = process_config(config, arg, args, flags)
+config = process_config_local(config, arg, args, flags)
+logg.debug('config loaded:\n{}'.format(config))
+
+settings = ChainSettings()
+settings = process_settings(settings, config)
+logg.debug('settings loaded:\n{}'.format(settings))
+
+
+def main():
+    token_address = settings.get('EXEC')
+    signer_address = settings.get('SENDER_ADDRESS')
+    conn = settings.get('CONN')
+
+    recipient_address_input = settings.get('RECIPIENT')
+    if recipient_address_input == None:
+        recipient_address_input = signer_address
+
+    recipient_address = add_0x(to_checksum_address(recipient_address_input))
+    if not config.true('_UNSAFE') and recipient_address != add_0x(recipient_address_input):
+        raise ValueError('invalid checksum address for recipient')
+
+    minter_address = config.get('_MINTER_ADDRESS')
+    c = GiftableToken(
+            settings.get('CHAIN_SPEC'),
+            signer=settings.get('SIGNER'),
+            gas_oracle=settings.get('GAS_ORACLE'),
+            nonce_oracle=settings.get('NONCE_ORACLE'),
+            )
+
+    if config.get('_RM'):
+        (tx_hash_hex, o) = c.remove_minter(
+                settings.get('EXEC'),
+                signer_address,
+                minter_address,
+                )
+    else:
+        (tx_hash_hex, o) = c.add_minter(
+                settings.get('EXEC'),
+                signer_address,
+                minter_address,
+                )
+
+    if settings.get('RPC_SEND'):
+        conn.do(o)
+        if settings.get('WAIT'):
+            r = conn.wait(tx_hash_hex)
+            if r['status'] == 0:
+                sys.stderr.write('EVM revert. Wish I had more to tell you')
+                sys.exit(1)
+
+        logg.info('add minter {} to {} tx {}'.format(minter_address, token_address, tx_hash_hex))
+
+        print(tx_hash_hex)
+    else:
+        print(o)
+
+
+if __name__ == '__main__':
+    main()

python/giftable_erc20_token/runnable/publish.py

@@ -0,0 +1,112 @@
+#!python3
+
+"""Deploys giftable token
+
+.. moduleauthor:: Louis Holbrook <dev@holbrook.no>
+.. pgp:: 0826EDA1702D1E87C6E2875121D2E7BB88C2A746 
+
+"""
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# standard imports
+import sys
+import os
+import json
+import argparse
+import logging
+import time
+from enum import Enum
+
+# external imports
+import chainlib.eth.cli
+from chainlib.eth.tx import receipt
+from chainlib.settings import ChainSettings
+from chainlib.eth.cli.log import process_log
+from chainlib.eth.settings import process_settings
+from chainlib.eth.cli.arg import (
+        Arg,
+        ArgFlag,
+        process_args,
+        )
+from chainlib.eth.cli.config import (
+        Config,
+        process_config,
+        )
+
+
+# local imports
+from giftable_erc20_token import GiftableToken
+
+logg = logging.getLogger()
+
+
+def process_config_local(config, arg, args, flags):
+    config.add(args.token_name, '_TOKEN_NAME', False)
+    config.add(args.token_symbol, '_TOKEN_SYMBOL', False)
+    config.add(args.token_decimals, '_TOKEN_DECIMALS', False)
+    config.add(args.token_expire, '_TOKEN_EXPIRE', False)
+    return config
+
+
+arg_flags = ArgFlag()
+arg = Arg(arg_flags)
+flags = arg_flags.STD_WRITE | arg_flags.WALLET
+
+argparser = chainlib.eth.cli.ArgumentParser()
+argparser = process_args(argparser, arg, flags)
+argparser.add_argument('--name', dest='token_name', required=True, type=str, help='Token name')
+argparser.add_argument('--symbol', dest='token_symbol', required=True, type=str, help='Token symbol')
+argparser.add_argument('--decimals', dest='token_decimals', default=18, type=int, help='Token decimals')
+argparser.add_argument('--expire', dest='token_expire', default=0, type=int, help='Token expiry timestamp (after which token cannot be traded)')
+args = argparser.parse_args()
+
+logg = process_log(args, logg)
+
+config = Config()
+config = process_config(config, arg, args, flags)
+config = process_config_local(config, arg, args, flags)
+logg.debug('config loaded:\n{}'.format(config))
+
+settings = ChainSettings()
+settings = process_settings(settings, config)
+logg.debug('settings loaded:\n{}'.format(settings))
+
+
+def main():
+    signer_address = settings.get('SENDER_ADDRESS')
+    conn = settings.get('CONN')
+
+    c = GiftableToken(
+            settings.get('CHAIN_SPEC'),
+            signer=settings.get('SIGNER'),
+            gas_oracle=settings.get('GAS_ORACLE'),
+            nonce_oracle=settings.get('NONCE_ORACLE'),
+            )
+
+    (tx_hash_hex, o) = c.constructor(
+            signer_address,
+            config.get('_TOKEN_NAME'),
+            config.get('_TOKEN_SYMBOL'),
+            config.get('_TOKEN_DECIMALS'),
+            expire=config.get('_TOKEN_EXPIRE'),
+            )
+    if settings.get('RPC_SEND'):
+        conn.do(o)
+        if settings.get('WAIT'):
+            r = conn.wait(tx_hash_hex)
+            if r['status'] == 0:
+                sys.stderr.write('EVM revert while deploying contract. Wish I had more to tell you')
+                sys.exit(1)
+            # TODO: pass through translator for keys (evm tester uses underscore instead of camelcase)
+            address = r['contractAddress']
+
+            print(address)
+        else:
+            print(tx_hash_hex)
+    else:
+        print(o)
+
+
+if __name__ == '__main__':
+    main()

python/giftable_erc20_token/unittest/__init__.py

@@ -0,0 +1 @@
+from .base import *

python/giftable_erc20_token/unittest/base.py

@@ -0,0 +1,59 @@
+# standard imports
+import logging
+import time
+
+# external imports
+from chainlib.eth.unittest.ethtester import EthTesterCase
+from chainlib.connection import RPCConnection
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.tx import receipt
+from chainlib.eth.address import to_checksum_address
+
+# local imports
+from giftable_erc20_token import GiftableToken
+
+logg = logging.getLogger(__name__)
+
+
+class TestGiftableToken(EthTesterCase):
+
+    expire = 0
+
+    def setUp(self):
+        super(TestGiftableToken, self).setUp()
+        self.conn = RPCConnection.connect(self.chain_spec, 'default')
+       
+        address = self.publish_giftable_token('Foo Token', 'FOO', 16, expire=self.expire)
+        self.address = to_checksum_address(address)
+        nonce_oracle = RPCNonceOracle(self.accounts[0], conn=self.conn)
+        c = GiftableToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        self.initial_supply = 1 << 40
+        (tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[0], self.initial_supply)
+        r = self.conn.do(o)
+        o = receipt(tx_hash)
+        r = self.conn.do(o)
+        self.assertEqual(r['status'], 1)
+
+
+    def publish_giftable_token(self, name, symbol, decimals=16, expire=None):
+        nonce_oracle = RPCNonceOracle(self.accounts[0], conn=self.conn)
+        c = GiftableToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        self.symbol = name
+        self.name = symbol
+        self.decimals = decimals
+        (tx_hash, o) = c.constructor(self.accounts[0], self.name, self.symbol, self.decimals, expire=expire)
+        self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 1)
+        address = r['contract_address'] 
+        logg.debug('published on address {} with hash {}'.format(address, tx_hash))
+        return address
+
+
+class TestGiftableExpireToken(TestGiftableToken):
+
+    expire = int(time.time()) + 100000
+
+    def setUp(self):
+        super(TestGiftableExpireToken, self).setUp()

python/requirements.txt

@@ -1 +1,4 @@
-web3==5.12.2
+confini~=0.6.1
+chainlib-eth~=0.6.0
+chainlib~=0.5.0
+potaahto~=0.1.1

python/run_tests.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+export PYTHONPATH=${PYTHONPATH}:.
+>&2 echo "using pythonpath $PYTHONPATH"
+
+set -e
+set -x
+for f in `ls tests/*.py`; do
+	python $f
+	if [ $? -gt 0 ]; then
+		exit 1
+	fi
+done
+set +x
+set +e

python/setup.cfg

@@ -1,33 +1,56 @@
 [metadata]
-name = giftable-erc20-token
+name = eth-erc20
-version = 0.0.3
+version = 0.9.0
-description = Simple ERC20 contract with deployment script that lets any address mint and gift itself tokens.
+description = ERC20 interface and simple contract with deployment script that lets any address mint and gift itself tokens.
 author = Louis Holbrook
 author_email = dev@holbrook.no
-url = https://gitlab.com/nolash/giftable-erc-token
+url = https://git.defalsify.org/eth-erc20
 keywords =
+	dlt
 	ethereum
+	token
+	blockchain
+	cryptocurrency
 classifiers =
 	Programming Language :: Python :: 3
 	Operating System :: OS Independent
-	Development Status :: 3 - Alpha
+	Development Status :: 4 - Beta
-	Environment :: No Input/Output (Daemon)
+	Environment :: Console
 	Intended Audience :: Developers
-	License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)
+	License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)
 	Topic :: Internet
+	Topic :: Software Development :: Libraries
 	#Topic :: Blockchain :: EVM
-license = GPL3
+license = AGPLv3+
 licence_files =
 	LICENSE
 
 [options]
-python_requires = >= 3.6
+include_package_data = True
+python_requires = >= 3.8
 packages =
+	giftable_erc20_token
 	giftable_erc20_token.runnable
-install_requires =
+	giftable_erc20_token.unittest
-	web3==5.12.2
+	giftable_erc20_token.data
+	eth_erc20
+	eth_erc20.data
+	eth_erc20.runnable
+	eth_erc20.unittest
+	static_token.data
+
+[options.package_data]
+* =
+ 	data/GiftableToken.json
+ 	data/GiftableToken.bin
+ 	data/StaticToken.json
+ 	data/StaticToken.bin
+ 	data/ERC20.json
 
 [options.entry_points]
 console_scripts =
-	giftable-token-deploy = giftable_erc20_token.runnable.deploy:main
+	giftable-token-publish = giftable_erc20_token.runnable.publish:main
 	giftable-token-gift = giftable_erc20_token.runnable.gift:main
+	erc20-transfer = eth_erc20.runnable.transfer:main
+	erc20-balance = eth_erc20.runnable.balance:main
+	erc20-info = eth_erc20.runnable.info:main

python/setup.py

@@ -1,4 +1,32 @@
 from setuptools import setup
 
+requirements = []
+f = open('requirements.txt', 'r')
+while True:
+    l = f.readline()
+    if l == '':
+        break
+    requirements.append(l.rstrip())
+f.close()
+
+test_requirements = []
+f = open('test_requirements.txt', 'r')
+while True:
+    l = f.readline()
+    if l == '':
+        break
+    test_requirements.append(l.rstrip())
+f.close()
+
+
 setup(
+        package_data={
+            '': [
+                'data/GiftableToken.abi.json',
+                'data/GiftableToken.bin',
+                ],
+            },
+        include_package_data=True,
+        install_requires=requirements,
+        tests_require=test_requirements,
         )

python/static_token/__init__.py

@@ -0,0 +1 @@
+from .factory import *

python/static_token/data/StaticToken.json

@@ -0,0 +1 @@
+[{"inputs":[{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"uint8","name":"_decimals","type":"uint8"},{"internalType":"uint256","name":"_supply","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_owner","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"TransferFrom","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"_sum","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

python/static_token/data/__init__.py

@@ -0,0 +1,3 @@
+import os
+
+data_dir = os.path.realpath(os.path.dirname(__file__))

python/static_token/factory.py

@@ -0,0 +1,60 @@
+# standard imports
+import os
+import logging
+
+# external imports
+from chainlib.eth.tx import (
+        TxFactory,
+        TxFormat,
+        )
+from chainlib.hash import keccak256_string_to_hex
+from chainlib.eth.contract import (
+        ABIContractEncoder,
+        ABIContractType,
+        )
+
+# local imports
+from static_token.data import data_dir
+
+logg = logging.getLogger(__name__)
+
+
+class StaticToken(TxFactory):
+
+    __abi = None
+    __bytecode = None
+
+    def constructor(self, sender_address, name, symbol, decimals, supply, tx_format=TxFormat.JSONRPC):
+        code = StaticToken.bytecode()
+        enc = ABIContractEncoder()
+        enc.string(name)
+        enc.string(symbol)
+        enc.uint256(decimals)
+        enc.uint256(supply)
+        code += enc.get()
+        tx = self.template(sender_address, None, use_nonce=True)
+        tx = self.set_code(tx, code)
+        return self.finalize(tx, tx_format)
+
+
+    @staticmethod
+    def gas(code=None):
+        return 2000000
+
+
+    @staticmethod
+    def abi():
+        if StaticToken.__abi == None:
+            f = open(os.path.join(data_dir, 'StaticToken.json'), 'r')
+            StaticToken.__abi = json.load(f)
+            f.close()
+        return StaticToken.__abi
+
+
+    @staticmethod
+    def bytecode():
+        if StaticToken.__bytecode == None:
+            f = open(os.path.join(data_dir, 'StaticToken.bin'))
+            StaticToken.__bytecode = f.read()
+            f.close()
+        return StaticToken.__bytecode

python/static_token/unittest/__init__.py

@@ -0,0 +1 @@
+from .base import TestStaticToken

python/static_token/unittest/base.py

@@ -0,0 +1,36 @@
+# standard imports
+import logging
+import time
+
+# external imports
+from chainlib.eth.unittest.ethtester import EthTesterCase
+from chainlib.connection import RPCConnection
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.tx import receipt
+from chainlib.eth.address import to_checksum_address
+
+# local imports
+from static_token import StaticToken
+from eth_erc20.unittest import TestInterface
+
+logg = logging.getLogger(__name__)
+
+
+class TestStaticToken(EthTesterCase, TestInterface):
+
+    def setUp(self):
+        super(TestStaticToken, self).setUp()
+        self.conn = RPCConnection.connect(self.chain_spec, 'default')
+        nonce_oracle = RPCNonceOracle(self.accounts[0], conn=self.conn)
+        c = StaticToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        self.symbol = 'FOO'
+        self.name = 'Foo Token'
+        self.decimals = 16
+        self.initial_supply = 1 << 24
+        (tx_hash, o) = c.constructor(self.accounts[0], self.name, self.symbol, self.decimals, self.initial_supply)
+        self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 1)
+        self.address = to_checksum_address(r['contract_address'])
+        logg.debug('published statictoken on address {} with hash {}'.format(self.address, tx_hash))

python/test_requirements.txt

@@ -0,0 +1,3 @@
+eth_tester==0.10.0b4
+py-evm==0.10.0b4
+pytest==6.0.1

python/tests/test_erc20_interface.py

@@ -0,0 +1,14 @@
+# import logging
+import unittest
+
+# local imports
+from giftable_erc20_token.unittest import TestGiftableToken
+from eth_erc20.unittest import TestInterface
+
+
+class TestBasic(TestGiftableToken, TestInterface):
+    pass
+
+
+if __name__ == '__main__':
+    unittest.main()

python/tests/test_giftable.py

@@ -0,0 +1,123 @@
+# standard imports
+import os
+import unittest
+import json
+import logging
+import datetime
+
+# external imports
+from chainlib.eth.constant import ZERO_ADDRESS
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.tx import receipt
+from chainlib.eth.block import (
+        block_latest,
+        block_by_number,
+    )
+
+# local imports
+from giftable_erc20_token import GiftableToken
+from giftable_erc20_token.unittest import TestGiftableExpireToken
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+testdir = os.path.dirname(__file__)
+
+
+class TestExpire(TestGiftableExpireToken):
+
+    def setUp(self):
+        super(TestExpire, self).setUp()
+
+
+    def test_expires(self):
+        mint_amount = self.initial_supply
+        nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
+        c = GiftableToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+
+        (tx_hash, o) = c.transfer(self.address, self.accounts[0], self.accounts[1], int(mint_amount / 2))
+        r = self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 1)
+
+        self.backend.time_travel(self.expire + 60)
+        o = block_latest()
+        r = self.rpc.do(o)
+        o = block_by_number(r)
+        r = self.rpc.do(o)
+        self.assertGreaterEqual(r['timestamp'], self.expire)
+        
+        nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
+        c = GiftableToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        (tx_hash, o) = c.transfer(self.address, self.accounts[0], self.accounts[1], 1)
+        r = self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 0)
+        
+        nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
+        c = GiftableToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        (tx_hash, o) = c.transfer(self.address, self.accounts[1], self.accounts[0], 1)
+        r = self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 0)
+
+        o = c.balance_of(self.address, self.accounts[0], sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        balance = c.parse_balance(r)
+        self.assertEqual(balance, int(mint_amount / 2))
+
+        o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        balance += c.parse_balance(r)
+        self.assertEqual(balance, mint_amount)
+
+        o = c.total_supply(self.address, sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        supply = c.parse_balance(r)
+        self.assertEqual(supply, mint_amount)
+
+
+    def test_burn(self):
+        mint_amount = self.initial_supply
+        nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
+        c = GiftableToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        (tx_hash, o) = c.burn(self.address, self.accounts[1], int(mint_amount / 4))
+        self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 0)
+
+        nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
+        c = GiftableToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
+        (tx_hash, o) = c.burn(self.address, self.accounts[0], int(mint_amount / 4))
+        self.rpc.do(o)
+        o = receipt(tx_hash)
+        r = self.rpc.do(o)
+        self.assertEqual(r['status'], 1)
+
+        o = c.burned(self.address, sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        burned = c.parse_balance(r)
+        self.assertEqual(burned, int(mint_amount / 4))
+
+        o = c.balance_of(self.address, self.accounts[0], sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        balance = c.parse_balance(r)
+        self.assertEqual(balance, mint_amount - burned)
+
+        o = c.total_supply(self.address, sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        balance = c.parse_balance(r)
+        self.assertEqual(balance, mint_amount - burned)
+
+        o = c.total_minted(self.address, sender_address=self.accounts[0])
+        r = self.rpc.do(o)
+        balance = c.parse_balance(r)
+        self.assertEqual(balance, mint_amount)
+
+
+if __name__ == '__main__':
+    unittest.main()

python/tests/test_static.py

@@ -0,0 +1,38 @@
+# standard imports
+import os
+import unittest
+import json
+import logging
+import datetime
+
+# external imports
+from chainlib.eth.constant import ZERO_ADDRESS
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.tx import receipt
+from chainlib.eth.block import (
+        block_latest,
+        block_by_number,
+    )
+
+# local imports
+from static_token import StaticToken
+from static_token.unittest import TestStaticToken
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+testdir = os.path.dirname(__file__)
+
+
+class TestExpire(TestStaticToken):
+
+    def setUp(self):
+        super(TestExpire, self).setUp()
+
+
+    def test_static_interface(self):
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()

solidity/GiftableToken.abi.json

@@ -1 +0,0 @@
-[{"inputs":[{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"uint8","name":"_decimals","type":"uint8"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_owner","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"TransferFrom","type":"event"},{"inputs":[{"internalType":"address","name":"_minter","type":"address"}],"name":"addMinter","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowances","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"mint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_minter","type":"address"}],"name":"removeMinter","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

solidity/GiftableToken.sol

@@ -1,57 +1,134 @@
-pragma solidity >=0.6.12;
+pragma solidity >=0.8.0;
 
-// SPDX-License-Identifier: GPL-3.0-or-later
+// SPDX-License-Identifier: AGPL-3.0-or-later
+// File-Version: 3
 
 contract GiftableToken {
 
-	address owner;
+	// Implements EIP173
-	mapping(address => bool) minters;
+	address public owner;
 
+	// Implements Writer
+	mapping(address => bool) writer;
+
+	// Implements ERC20
 	string public name;
+	// Implements ERC20
 	string public symbol;
+	// Implements ERC20
 	uint8 public decimals;
-	uint256 public totalSupply;
+	// Implements ERC20
 	mapping (address => uint256) public balanceOf;
-	mapping (address => mapping (address => uint256)) public allowances;
+	// Implements ERC20
+	mapping (address => mapping (address => uint256)) public allowance;
 
+	// Implements Burner
+	uint256 public totalMinted;
+	// Implements Burner
+	uint256 public totalBurned;
+
+	// Implements Expire
+	uint256 public expires;
+	bool expired;
+
+	// Implements ERC20
 	event Transfer(address indexed _from, address indexed _to, uint256 _value);
+	// Implements ERC20
 	event TransferFrom(address indexed _from, address indexed _to, address indexed _spender, uint256 _value);
+	// Implements ERC20
 	event Approval(address indexed _owner, address indexed _spender, uint256 _value);
 
-	constructor(string memory _name, string memory _symbol, uint8 _decimals) public {
+	// Implements Minter
+	event Mint(address indexed _minter, address indexed _beneficiary, uint256 _value);
+
+	// Implement Expire
+	event Expired(uint256 _timestamp);
+
+	// Implements Writer
+	event WriterAdded(address _writer);
+	// Implements Writer
+	event WriterRemoved(address _writer);
+
+	// Implements Burner
+	event Burn(uint256 _value);
+
+	constructor(string memory _name, string memory _symbol, uint8 _decimals, uint256 _expireTimestamp) {
 		owner = msg.sender;
 		name = _name;
 		symbol = _symbol;
 		decimals = _decimals;
-		minters[msg.sender] = true;
+		expires = _expireTimestamp;
 	}
 
-	function mint(uint256 _value) public returns (bool) {
+	// Implements ERC20
-		require(minters[msg.sender]);
+	function totalSupply() public view returns (uint256) {
+		return totalMinted - totalBurned;
+	}
 
-		balanceOf[msg.sender] += _value;
+	mapping(address => bool) writers;
-		totalSupply += _value;
+
+	// Implements Minter
+	function mintTo(address _to, uint256 _value) public returns (bool) {
+		require(writers[msg.sender] || msg.sender == owner);
+
+		balanceOf[_to] += _value;
+		totalMinted += _value;
+
+		emit Mint(msg.sender, _to, _value);
 
 		return true;
 	}
 
-	function addMinter(address _minter) public returns (bool) {
+	// Implements Minter
+	// Implements ERC5679Ext20
+	function mint(address _to, uint256 _value, bytes calldata _data) public {
+		_data;
+		mintTo(_to, _value);
+	}
+
+	// Implements Writer
+	function addWriter(address _minter) public returns (bool) {
 		require(msg.sender == owner);
 
-		minters[_minter] = true;
+		writers[_minter] = true;
 
 		return true;
 	}
 
-	function removeMinter(address _minter) public returns (bool) {
+	// Implements Writer
+	function deleteWriter(address _minter) public returns (bool) {
 		require(msg.sender == owner || msg.sender == _minter);
 
-		minters[_minter] = false;
+		writers[_minter] = false;
 
 		return true;
 	}
 
+	// Implements Writer
+	function isWriter(address _minter) public view returns(bool) {
+		return writers[_minter] || _minter == owner;
+	}
+
+	// Implements Expire
+	function applyExpiry() public returns(uint8) {
+		if (expires == 0) {
+			return 0;
+		}
+		if (expired) {
+			return 1;
+		}
+		if (block.timestamp >= expires) {
+			expired = true;
+			emit Expired(block.timestamp);
+			return 2;
+		}
+		return 0;
+
+	}
+
+	// Implements ERC20
 	function transfer(address _to, uint256 _value) public returns (bool) {
+		require(applyExpiry() == 0);
 		require(balanceOf[msg.sender] >= _value);
 		balanceOf[msg.sender] -= _value; 
 		balanceOf[_to] += _value;
@@ -59,19 +136,84 @@ contract GiftableToken {
 		return true;
 	}
 
+	// Implements Burner
+	function burn(uint256 _value) public returns (bool) {
+		require(msg.sender == owner, 'ERR_ACCESS');
+		require(balanceOf[msg.sender] >= _value, 'ERR_FUNDS');
+
+		balanceOf[msg.sender] -= _value;
+		totalBurned += _value;
+
+		emit Burn(_value);
+		return true;
+	}
+
+	// Implements Burner
+	function burn() public returns(bool) {
+		return burn(balanceOf[msg.sender]);
+	}
+
+	// Implements Burner
+	// Implements ERC5679Ext20
+	function burn(address _from, uint256 _value, bytes calldata _data) public {
+		require(msg.sender == _from, 'ERR_NOT_SELF');
+		_data;
+		burn(_value);
+	}
+
+	// Implements ERC20
 	function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
-		require(allowances[_from][msg.sender] >= _value);
+		require(applyExpiry() == 0);
+		require(allowance[_from][msg.sender] >= _value);
 		require(balanceOf[_from] >= _value);
-		allowances[_from][msg.sender] = allowances[_from][msg.sender] - _value;
+		allowance[_from][msg.sender] = allowance[_from][msg.sender] - _value;
 		balanceOf[_from] -= _value; 
 		balanceOf[_to] += _value;
 		emit TransferFrom(_from, _to, msg.sender, _value);
 		return true;
 	}
 
+	// Implements ERC20
 	function approve(address _spender, uint256 _value) public returns (bool) {
-		allowances[msg.sender][_spender] += _value;
+		require(applyExpiry() == 0);
+		if (_value > 0) {
+			require(allowance[msg.sender][_spender] == 0);
+		}
+		allowance[msg.sender][_spender] = _value;
 		emit Approval(msg.sender, _spender, _value);
 		return true;
 	}
+
+	// Implements EIP173
+	function transferOwnership(address _newOwner) public returns (bool) {
+		require(msg.sender == owner);
+		owner = _newOwner;
+		return true;
+	}
+
+	// Implements EIP165
+	function supportsInterface(bytes4 _sum) public pure returns (bool) {
+		if (_sum == 0xb61bc941) { // ERC20
+			return true;
+		}
+		if (_sum == 0x449a52f8) { // Minter
+			return true;
+		}
+		if (_sum == 0x01ffc9a7) { // EIP165
+			return true;
+		}
+		if (_sum == 0x9493f8b2) { // EIP173
+			return true;
+		}
+		if (_sum == 0xabe1f1f5) { // Writer
+			return true;
+		}
+		if (_sum == 0xb1110c1b) { // Burner
+			return true;
+		}
+		if (_sum == 0x841a0e94) { // Expire
+			return true;
+		}
+		return false;
+	}
 }

solidity/Makefile

@@ -1,8 +1,16 @@
+SOLC = /usr/bin/solc
+
 all:
-	solc --bin GiftableToken.sol | awk 'NR>3' > GiftableToken.bin
+	$(SOLC) --bin GiftableToken.sol --evm-version byzantium | awk 'NR>3' > GiftableToken.bin
+	$(SOLC) --abi GiftableToken.sol --evm-version byzantium | awk 'NR>3' > GiftableToken.json
+	$(SOLC) --metadata GiftableToken.sol --evm-version byzantium | awk 'NR>3' > GiftableToken.metadata.json
+	$(SOLC) --bin StaticToken.sol --evm-version byzantium | awk 'NR>3' > StaticToken.bin
+	$(SOLC) --abi StaticToken.sol --evm-version byzantium | awk 'NR>3' > StaticToken.json
+	$(SOLC) --metadata StaticToken.sol --evm-version byzantium | awk 'NR>3' > StaticToken.metadata.json
+	truncate -s -1 StaticToken.bin
 	truncate -s -1 GiftableToken.bin
-	solc --abi GiftableToken.sol | awk 'NR>3' > GiftableToken.abi.json
 
-#install: all
+install: all
-#	cp -v *{json,bin} ../python/giftable_erc20_token/data/
+	cp -v *.json ../python/giftable_erc20_token/data/
+	cp -v *.bin ../python/giftable_erc20_token/data/
 

solidity/StaticToken.json

@@ -0,0 +1 @@
+[{"inputs":[{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"uint8","name":"_decimals","type":"uint8"},{"internalType":"uint256","name":"_supply","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_owner","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"TransferFrom","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"_sum","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

solidity/StaticToken.sol

@@ -0,0 +1,79 @@
+pragma solidity >=0.8.0;
+
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+contract StaticToken {
+
+	address owner;
+	mapping(address => bool) minters;
+
+	// Implements ERC20
+	string public name;
+	// Implements ERC20
+	string public symbol;
+	// Implements ERC20
+	uint8 public decimals;
+	// Implements ERC20
+	uint256 public totalSupply;
+	// Implements ERC20
+	mapping (address => uint256) public balanceOf;
+	// Implements ERC20
+	mapping (address => mapping (address => uint256)) public allowance;
+
+	// Implements ERC20
+	event Transfer(address indexed _from, address indexed _to, uint256 _value);
+	// Implements ERC20
+	event TransferFrom(address indexed _from, address indexed _to, address indexed _spender, uint256 _value);
+	// Implements ERC20
+	event Approval(address indexed _owner, address indexed _spender, uint256 _value);
+
+	constructor(string memory _name, string memory _symbol, uint8 _decimals, uint256 _supply) {
+		owner = msg.sender;
+		name = _name;
+		symbol = _symbol;
+		decimals = _decimals;
+		totalSupply = _supply;
+		balanceOf[owner] = _supply;
+	}
+
+	// Implements ERC20
+	function transfer(address _to, uint256 _value) public returns (bool) {
+		require(balanceOf[msg.sender] >= _value);
+		balanceOf[msg.sender] -= _value; 
+		balanceOf[_to] += _value;
+		emit Transfer(msg.sender, _to, _value);
+		return true;
+	}
+
+	// Implements ERC20
+	function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
+		require(allowance[_from][msg.sender] >= _value);
+		require(balanceOf[_from] >= _value);
+		allowance[_from][msg.sender] = allowance[_from][msg.sender] - _value;
+		balanceOf[_from] -= _value; 
+		balanceOf[_to] += _value;
+		emit TransferFrom(_from, _to, msg.sender, _value);
+		return true;
+	}
+
+	// Implements ERC20
+	function approve(address _spender, uint256 _value) public returns (bool) {
+		if (_value > 0) {
+			require(allowance[msg.sender][_spender] == 0);
+		}
+		allowance[msg.sender][_spender] = _value;
+		emit Approval(msg.sender, _spender, _value);
+		return true;
+	}
+
+	// Implements EIP165
+	function supportsInterface(bytes4 _sum) public pure returns (bool) {
+		if (_sum == 0xb61bc941) { // ERC20
+			return true;
+		}
+		if (_sum == 0x01ffc9a7) { // EIP165
+			return true;
+		}
+		return false;
+	}
+}