Merge branch 'master' into lash/transfer-from

.gitignore

@@ -4,3 +4,5 @@ dist/
 build/
 gmon.out
 *.egg-info
+.venv/
+.idea

.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
+
+

CONTRIBUTING.md

@@ -0,0 +1,15 @@
+Hello and welcome to the CIC Stack repository. Targeted for use with the ethereum virtual machine and a ussd capable telecom provider. 
+
+__To request a change to the code please fork this repository and sumbit a merge request.__
+
+__If there is a Grassroots Economics Kanban Issue please include that in our MR it will help us track contributions. Karibu sana!__
+
+__Visit the Development Kanban board here: https://gitlab.com/grassrootseconomics/cic-internal-integration/-/boards/2419764__
+
+__Ask a question in our dev chat:__
+
+[Mattermost](https://chat.grassrootseconomics.net/cic/channels/dev)
+
+[Discord](https://discord.gg/XWunwAsX)
+
+[Matrix, IRC soon?]

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
+                       Version 3, 19 November 2007
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+
+  12. No Surrender of Others' Freedom.
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+  15. Disclaimer of Warranty.
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+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    eth-erc20
+    Copyright (C) 2021  cicnet
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (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
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
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+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

README.md

@@ -0,0 +1,25 @@
+# ETH-ERC20 Solidity Contract
+
+
+### solidity 
+
+To generate bytecode and tests install solc 8.x.x and run the solc bits below or execute the following: 
+
+```
+docker run -v `pwd`:/src registry.gitlab.com/grassrootseconomics/cic-base-images/ci-solc-python:latest solc --evm-version=byzantium solidity/GiftableToken.sol --abi
+```
+
+```
+docker run -v `pwd`:/src registry.gitlab.com/grassrootseconomics/cic-base-images/ci-solc-python:latest solc GiftableToken.sol --bin | awk 'NR>3' > GiftableToken.bin 
+```
+
+### python unit tests
+
+```
+pip install --extra-index-url https://gitlab.com/api/v4/projects/27624814/packages/pypi/simple \
+--extra-index-url https://pip.grassrootseconomics.net \
+-r requirements.txt -r test_requirements.txt
+
+bash python/run_tests.sh
+
+```

python/.coveragerc

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

python/CHANGELOG

@@ -1,9 +1,11 @@
-* 0.0.10-pending
+* 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
-* 0.0.9-unreleased
+* 0.0.7
-* 0.0.8-unreleased
-* 0.0.7-unreleased
 	- Implement keystore signing.
 	- Change makefile to compile contract for Byzantium.
 	- Change mint method name to mintTo

python/eth_erc20/erc20.py

@@ -2,23 +2,7 @@
 import logging
 
 # external imports
-import sha3
-from hexathon import (
-        add_0x,
-        strip_0x,
-        )
-
-# external imports
-from chainlib.hash import (
-        keccak256_hex_to_hex,
-        keccak256_string_to_hex,
-        )
 from chainlib.eth.constant import ZERO_ADDRESS
-from chainlib.eth.tx import (
-        TxFactory,
-        TxFormat,
-        )
-from chainlib.jsonrpc import JSONRPCRequest
 from chainlib.eth.contract import (
     ABIContractEncoder,
     ABIContractDecoder,
@@ -26,6 +10,15 @@ from chainlib.eth.contract import (
     abi_decode_single,
 )
 from chainlib.eth.error import RequestMismatchException
+from chainlib.eth.tx import (
+    TxFactory,
+    TxFormat,
+)
+from chainlib.jsonrpc import JSONRPCRequest
+from hexathon import (
+    add_0x,
+    strip_0x,
+)
 
 logg = logging.getLogger()
 

python/eth_erc20/runnable/info.py

@@ -0,0 +1,110 @@
+#!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.address import to_checksum_address
+from chainlib.eth.connection import EthHTTPConnection
+from chainlib.eth.gas import (
+        OverrideGasOracle,
+        balance,
+        )
+from chainlib.chain import ChainSpec
+
+# local imports
+from eth_erc20 import ERC20
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+arg_flags = chainlib.eth.cli.argflag_std_read | chainlib.eth.cli.Flag.EXEC
+argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
+argparser.add_positional('item', required=False)
+args = argparser.parse_args()
+config = chainlib.eth.cli.Config.from_args(args, arg_flags)
+
+rpc = chainlib.eth.cli.Rpc()
+conn = rpc.connect_by_config(config)
+
+chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
+
+token_address = config.get('_EXEC_ADDRESS')
+
+
+def main():
+    g = ERC20(chain_spec=chain_spec, gas_oracle=rpc.get_gas_oracle())
+
+    if not args.item or args.item == 'name':
+        name_o = g.name(token_address)
+        r = conn.do(name_o)
+        token_name = g.parse_name(r)
+        s = ''
+        if not args.item or not args.raw:
+            s = 'Name: '
+        s += token_name
+        print(s)
+        if args.item == 'name':
+            sys.exit(0)
+
+    if not args.item or args.item == 'symbol':
+        symbol_o = g.symbol(token_address)
+        r = conn.do(symbol_o)
+        token_symbol = g.parse_symbol(r)
+        s = ''
+        if not args.item or not args.raw:
+            s = 'Symbol: '
+        s += token_symbol
+        print(s)
+        if args.item == 'symbol':
+            sys.exit(0)
+
+    if not args.item or args.item == 'decimals':
+        decimals_o = g.decimals(token_address)
+        r = conn.do(decimals_o)
+        decimals = int(strip_0x(r), 16)
+        s = ''
+        if not args.item or not args.raw:
+            s = 'Decimals: '
+        s += str(decimals)
+        print(s)
+        if args.item == 'decimals':
+            sys.exit(0)
+
+    if not args.item or args.item == 'supply':
+        supply_o = g.total_supply(token_address)
+        r = conn.do(supply_o)
+        supply = int(strip_0x(r), 16)
+        s = ''
+        if not args.item or not args.raw:
+            s = 'Supply: '
+        s += str(supply)
+        print(s)
+        if args.item == 'supply':
+            sys.exit(0)
+
+
+if __name__ == '__main__':
+    main()

python/giftable_erc20_token/data/GiftableToken.json

@@ -1 +1 @@
-[{"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":"_minter","type":"address"},{"indexed":true,"internalType":"address","name":"_beneficiary","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Mint","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":"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":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"mintTo","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":[{"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"}]
+[{"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":"_minter","type":"address"},{"indexed":true,"internalType":"address","name":"_beneficiary","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Mint","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":"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":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"mintTo","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_minter","type":"address"}],"name":"removeMinter","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","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"},{"inputs":[{"internalType":"address","name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

python/requirements.txt

@@ -1,3 +1,3 @@
-confini~=0.5.1
+confini~=0.5.2
-chainlib-eth~=0.0.12
+chainlib-eth~=0.0.14
-potaahto~=0.1.0
+potaahto==0.1.0

python/setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = eth-erc20
-version = 0.1.2
+version = 0.1.11
 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
@@ -30,11 +30,14 @@ packages =
 	eth_erc20
 	eth_erc20.data
 	eth_erc20.runnable
+	static_token.data
 
 [options.package_data]
 * =
  	data/GiftableToken.json
  	data/GiftableToken.bin
+ 	data/StaticToken.json
+ 	data/StaticToken.bin
  	data/ERC20.json
 
 [options.entry_points]
@@ -44,3 +47,4 @@ console_scripts =
 	giftable-token-minter = giftable_erc20_token.runnable.minter:main
 	erc20-transfer = eth_erc20.runnable.transfer:main
 	erc20-balance = eth_erc20.runnable.balance:main
+	erc20-info = eth_erc20.runnable.info:main

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/tests/test_erc20_interface.py

@@ -12,6 +12,7 @@ from chainlib.eth.tx import (
         receipt,
         )
 from chainlib.eth.address import to_checksum_address
+from hexathon import strip_0x
 
 # local imports
 from giftable_erc20_token import GiftableToken
@@ -102,7 +103,7 @@ class TestToken(EthTesterCase):
         o = transaction(tx_hash)
         r = self.rpc.do(o)
         data = c.parse_transfer_request(r['data'])
-        self.assertEqual(data[0], self.accounts[1])
+        self.assertEqual(data[0], strip_0x(self.accounts[1]))
         self.assertEqual(data[1], 1000)
 
 
@@ -124,7 +125,7 @@ class TestToken(EthTesterCase):
         o = transaction(tx_hash)
         r = self.rpc.do(o)
         data = c.parse_approve_request(r['data'])
-        self.assertEqual(data[0], self.accounts[1])
+        self.assertEqual(data[0], strip_0x(self.accounts[1]))
         self.assertEqual(data[1], 1000)
 
         nonce_oracle = RPCNonceOracle(self.accounts[1], conn=self.conn)
@@ -138,8 +139,8 @@ class TestToken(EthTesterCase):
         o = transaction(tx_hash)
         r = self.rpc.do(o)
         data = c.parse_transfer_from_request(r['data'])
-        self.assertEqual(data[0], self.accounts[0])
+        self.assertEqual(data[0], strip_0x(self.accounts[0]))
-        self.assertEqual(data[1], self.accounts[2])
+        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)

solidity/GiftableToken.json

@@ -1 +1 @@
-[{"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":"_minter","type":"address"},{"indexed":true,"internalType":"address","name":"_beneficiary","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Mint","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":"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":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"mintTo","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":[{"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"}]
+[{"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":"_minter","type":"address"},{"indexed":true,"internalType":"address","name":"_beneficiary","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Mint","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":"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":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"mintTo","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_minter","type":"address"}],"name":"removeMinter","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","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"},{"inputs":[{"internalType":"address","name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

solidity/GiftableToken.sol

@@ -1,10 +1,11 @@
-pragma solidity >0.6.11;
+pragma solidity >=0.6.11;
 
 // SPDX-License-Identifier: GPL-3.0-or-later
+// File-Version: 2
 
 contract GiftableToken {
 
-	address owner;
+	address public owner;
 	mapping(address => bool) minters;
 
 	// Implements ERC20
@@ -101,6 +102,12 @@ contract GiftableToken {
 		return true;
 	}
 
+	// Implements EIP173
+	function transferOwnership(address _newOwner) public returns (bool) {
+		require(msg.sender == owner);
+		owner = _newOwner;
+	}
+
 	// Implements EIP165
 	function supportsInterface(bytes4 _sum) public returns (bool) {
 		if (_sum == 0xc6bb4b70) { // ERC20
@@ -115,6 +122,9 @@ contract GiftableToken {
 		if (_sum == 0x80c84bd6) { // Writer
 			return true;
 		}
+		if (_sum == 0x9493f8b2) { // EIP173
+			return true;
+		}
 		return false;
 	}
 }

solidity/Makefile

@@ -4,7 +4,11 @@ all:
 	$(SOLC) --bin GiftableToken.sol --evm-version byzantium | awk 'NR>3' > GiftableToken.bin
 	truncate -s -1 GiftableToken.bin
 	$(SOLC) --abi GiftableToken.sol --evm-version byzantium | awk 'NR>3' > GiftableToken.json
+	$(SOLC) --bin StaticToken.sol --evm-version byzantium | awk 'NR>3' > StaticToken.bin
+	truncate -s -1 StaticToken.bin
+	$(SOLC) --abi StaticToken.sol --evm-version byzantium | awk 'NR>3' > StaticToken.json
 
 install: all
-	cp -v *{json,bin} ../python/giftable_erc20_token/data/
+	cp -v Giftable*{json,bin} ../python/giftable_erc20_token/data/
+	cp -v Static*{json,bin} ../python/static_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":"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/StaticToken.sol

@@ -0,0 +1,76 @@
+pragma solidity >0.6.11;
+
+// SPDX-License-Identifier: GPL-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;
+
+	event Transfer(address indexed _from, address indexed _to, uint256 _value);
+	event TransferFrom(address indexed _from, address indexed _to, address indexed _spender, uint256 _value);
+	event Approval(address indexed _owner, address indexed _spender, uint256 _value);
+
+	constructor(string memory _name, string memory _symbol, uint8 _decimals, uint256 _supply) public {
+		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 returns (bool) {
+		if (_sum == 0xc6bb4b70) { // ERC20
+			return true;
+		}
+		if (_sum == 0x01ffc9a7) { // EIP165
+			return true;
+		}
+		return false;
+	}
+}