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CONTRIBUTING.md

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Contributing

If you have an idea for a new feature or just want to help out with a bug fix, please refer to this guide and follow the rules before submitting a pull request.

Submitting Issues

If you aren't a programmer or don't have the time to contribute code to the project, we would still appreciate bug reports and feature requests. Please use the appropriate issue type in the GitHub issue system to report either bugs or feature requests.

When reporting bugs, ensure you include the current version pwncat you have installed, what type of target/victim you are using, what payload you used on the target to gain a shell, any relevant tracebacks, and of course screenshots if they add context to your problem. In general, the more information we have, the more chance there is we can fix the problem.

For feature requests, please be very specific on what you would like pwncat to do. We can't read your mind, and English isn't perfect. If you are interested in or willing to help implement your new feature, please explicitly let us know. This will help in prioritizing the issue.

Submitting Pull Requests

When submitting a pull request, ensure you have read through and comply with these contributing rules. The pull request template should guide you through the things that need done before merging code.

For help with running pre-merge tools, see the styling and formatting section below. For running pytest test cases, see the testing section.

Before submitting your changes in a pull request, please add a brief one-line summary to the CHANGELOG.md file under the [Unreleased] heading. This makes releases more straightforward and bug fixes and features are added along the way. For information on the format of the changelog, see Keep a Changelog.

If you are submitting a bug fix, annotate this with Fixes #XXX replacing the XXX with the issue number. This ensures that the issue will be closed once the bug fix is merged. If your bug fix does not completely fix the issue, do not use the Fixes keyword. Instead, mention the issue by number in your pull request to ensure the link between the issue and pull request is clear.

Versioning

pwncat follows Semantic Versioning. You can learn about the basics of semver here. pwncat does not currently have any release schedule, but in general the following rules apply:

  • PATCH fixes are released whenever there is either significant aggregate of bug fixes or when a significantly agregious bug is fixed. The decision for what "significant" means will be decided by a project owner.
  • MINOR releases are for added functionality. The pwncat API is relatively stable, but still has not attained v1.0.0 status, and therefore minor releases could make breaking API changes. However, a concerted effort should be made to make all changes backwards compatible.

As mentioned above, pwncat has not reached v1.0.0 yet. As such, I don't have rules yet for MAJOR version bumps. I will update this file as the situation develops.

Making Changes

In general, when contributing to a project on GitHub, you should work from a branch. This helps organize your changes within the project. There are two main branches which pwncat uses to organize contributions: master and the next release branch (named like release-vX.Y.Z).

  • Any bug fixes which do not add new features should be made targeting master.
  • Any new features should be made targeting the latest release-vX.Y.Z.

When forking the repository to make contributions, you can work directly out of your fork's master or release branches or fork them. When creating a pull request, you must target the appropriate branch based on the intent of your work.

Pull requests targeting the wrong branch will be retargeted, which could cause issues while merging.

Styling and Format

The majority of pwncat is written in Python. We use python-black to format code in a consistent and readable manner. We recommend you install a Black plugin for your editor or IDE to ensure all code is formatted prior to opening a pull request.

Beyond Black, you should also run isort and flake8 within your branch prior to opening a pull request. isort will sort your imports to ensure they are easy to read. flake8 will notify you of some common Python errors. pwncat has flake8 and isort configurations, so the process is as simple as running the associated tool.

Prior to creating a pull request, please run the following from the repository root to ensure formatting is in order:

# Automatically fixes imports
isort ./pwncat
# Automatically fixes formatting
black ./pwncat
# Warns of errors or other syntax problems
flake8

Testing Your Changes

Testing pwncat is difficult. There are some unit tests implemented in tests/. These tests can be executed with pytest, but you must provide suitable targets for the testing framework. The run-tests.sh script uses podman to start two containers to act as targets, and then runs all tests. One container is a Ubuntu machine with a bind shell and the other is a CentOS container with a bind shell.

If you are creating Windows features, you can run the Windows tests as well by manually providing a Windows bind shell target:

WINDOWS_HOST=10.10.10.10 WINDOWS_BIND_PORT=4444 ./run-tests.sh

The included unit tests are not great. They do not have a lot of coverage, but they at least ensure that the basic automated functionality of pwncat is not broken across some common target types.

Maintainer Responsibilities and Expectations

The primary maintainer or repository owner will be Caleb Stewart (calebstewart) until otherwised announced or changed in the future. Other users may be invited as Co-Maintainers in the future to assist in the daily maintenance, issue review and pull request review processes with the project. The follow section describes the expectations of Co-Maintainers within the project and their conduct.

This is a community project supported by open source software and as such, there are no requirements for participation in development or review. At any time, a Co-Maintainer can request to leave the project with no hard feelings. Co-Maintainers will be invited based on consistent interaction with the project including issues, pull requests and discussions. Additionally, the quality of interactions with respect to the above contribution guidelines will also be taken into account.

We understand this is a part time involvement. There is no expectation or agreement between you and this project which requires your participation. pwncat is an open source project, and participation is obviously voluntary. If at any time, you feel overwhelmed or simply lack the free time to support the project, you have no responsiblity to contribute simply by accepting the role of a co-maintainer.

Just as Co-Maintainer participation is not bound by any formal requirements or agreement, the status of Co-Maintainer can be revoked at any time by the primary maintainer normally based on the following criteria:

  • Active particpation in issues and pull requests.
  • Professionalism in correspondence with contributors.
  • Adherence to the above contribution guidelines.
  • Other factors determined by the primary maintainer which negatively impact the pwncat community or code base.

In addition to the above guidelines for issue and pull request submission, Co-Maintainers are expected to participate in third-part issues and pull requests. This is the main goal of inviting Co-Maintainers. Your assistance in maintaining the project and producing a helpful tool for the community is greatly appreciated. :)

As a Co-Maintainer, you do not have permission to merge pull requests which implement new features into any branch. Co-Maintainers are expected to assist in the review and application of bug fixes and resolution of issues. When creating new features, the primary maintainer is responsible for approving and merging changes. Merging changes into release branches is strictly a role of the primary maintainer.

Further, Co-Maintainers should not cut new releases of any kind. Cutting minor and major releases is the sole responsibility of the primary maintainer. If a Co-Maintainer believes a new minor release is needed in order to implement important bug fixes, a pull request can be opened bumping the version number separately from any other changes explaining the need for a new version release and request a review from the primary maintainer. At which point, the primary maintainer will review and cut a release if appropriate.

In contrast, Co-Maintainers are expected to do the following as your personal life permits:

  • Uphold the above contributing guidelines at all times. This includes when opening personal issues and pull requests as well as helping to instruct users when the guidelines are not being followed. This project should always foster Open Source contribution and learning, and therefore this instruction to third-party contributors should always be polite and constructive.
  • Participate as a primary voice in issues and pull requests. In no way are you required to particpate in every issue or pull request, however as a Co-Maintainer, you are expected to have a higher level of knowledge, participation and/or professionalism when interacting with third-parties.
  • Merge bug-fixes which adhere to the above contribution guidelines and which have been thoroughly tested. Co-Maintainers act as reviewers for bug-fix pull requests and have permission to merge those changes into the master branch.

If you have an interest in becoming a Co-Maintainer, would like to be removed as a Co-Maintainer or have a general question about these guidelines, feel free to reach out to the primary maintainer. At the time of writing, you can reach out in the following ways:

  • Open a discussion in the Discussions tab of GitHub.
  • Send an E-mail directly to Caleb Stewart <[email protected]>.