README

TarStreamer is a PHP library for streaming tar archives. It allows on-the-fly generation of tar files without requiring the entire archive to be held in memory, making it suitable for serving large file downloads from web applications. The library is used internally by ownCloud Server to support archive downloads.

Part of Classic (OC10)

TarStreamer is a supporting library used by ownCloud Server (Classic) for streaming tar archive downloads. It is distributed as a Composer package and integrated into the ownCloud Server via its dependency chain.

This component is included in the ownCloud Server Docker image.

Getting Started

Install via Composer:

composer require owncloud/tarstreamer

Documentation

• See the source code in src/ for the API
• ownCloud Server documentation

Community & Support

Star this repo and Watch for release notifications!

• ownCloud Website
• Community Discussions
• Matrix Chat
• Documentation
• Enterprise Support
• OSPO Home

Contributing

We welcome contributions! Please read the Contributing Guidelines and our Code of Conduct before getting started.

Workflow

• Rebase Early, Rebase Often! We use a rebase workflow. Always rebase on the target branch before submitting a PR.
• Dependabot: Automated dependency updates are managed via Dependabot. Review and merge dependency PRs promptly.
• Signed Commits: All commits must be PGP/GPG signed. See GitHub's signing guide.
• DCO Sign-off: Every commit must carry a Signed-off-by line:

  git commit -s -S -m "your commit message"
  

• GitHub Actions Policy: Workflows may only use actions that are (a) owned by owncloud, (b) created by GitHub (actions/*), or (c) verified in the GitHub Marketplace.

Security

Do not open a public GitHub issue for security vulnerabilities.

Report vulnerabilities at https://security.owncloud.com -- see SECURITY.md.

Bug bounty: YesWeHack ownCloud Program

License

This project is licensed under the MIT.

About the ownCloud OSPO

The Kiteworks Open Source Program Office, operating under the ownCloud brand, launched on May 5, 2026, to steward the open source ecosystem around ownCloud's products. The OSPO ensures transparent governance, license compliance, community health, and sustainable collaboration between the open source community and Kiteworks, which acquired ownCloud in 2023.

• OSPO Home: https://kiteworks.com/opensource
• GitHub: https://github.com/owncloud
• ownCloud: https://owncloud.com

For questions about the OSPO or licensing, contact ospo@kiteworks.com.

License Migration to Apache 2.0

The OSPO is driving a strategic relicensing of ownCloud repositories toward the Apache License 2.0, following the Apache Software Foundation's third-party license policy.

Individual repositories will migrate as their audit is completed. The LICENSE file in each repo reflects its current license status (not the target).

Current license: MIT (Category A per Apache policy -- permissive, compatible with Apache-2.0).

Migration prerequisites for this repository:

• CLA/DCO coverage: All past contributors must have signed agreements permitting relicensing
• Header updates: All source file headers must be updated from MIT to Apache-2.0 notice
• Dependency audit: Verify no incompatible transitive dependencies