This project is meant to be a resource for mapping the 4-byte function selectors used by the EVM back to a list of known canonical function signatures that will generate those 4-byte selectors.

The project currently consists of two primary components:

1. Current website located at https://www.4byte.directory/.
2. An Ethereum smart contract that houses the signature data. (This portion is a work in progress and is not yet live).

Note: This project is only supported under Python3. If it works in Python2.x that is purely coincidental.

First install the relevant system dependencies.

• OSX: brew install pkg-config libffi autoconf automake libtool openssl postgres
• Linux: sudo apt-get install libssl-dev postgresql postgresql-contrib

There are two primary test suites located under the ./tests/ directory.

• ./tests/web/: contains all of the tests for the website.
• ./tests/contracts/: contains all of the tests for the smart contracts.

First you will need to install the requirements.

$ pip install -r requirements.txt -r requirements-dev.txt

To run the full test suite:

$ tox

To run the individual tests suites.

$ py.test tests/web
$ py.test tests/contracts

To serve the site on a development machine, bypassing several security measures, run:

python manage.py runserver --settings func_sig_registry.settings_dev