29fa466deb
Under certain circumstances, the use of `StorageDriver.GetContent` can
result in unbounded memory allocations. In particualr, this happens when
accessing a layer through the manifests endpoint.
This problem is mitigated by setting a 4MB limit when using to access
content that may have been accepted from a user. In practice, this means
setting the limit with the use of `BlobProvider.Get` by wrapping
`StorageDriver.GetContent` in a helper that uses `StorageDriver.Reader`
with a `limitReader` that returns an error.
When mitigating this security issue, we also noticed that the size of
manifests uploaded to the registry is also unlimited. We apply similar
logic to the request body of payloads that are full buffered.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
(cherry picked from commit
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| health | ||
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| project | ||
| reference | ||
| registry | ||
| testutil | ||
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| CONTRIBUTING.md | ||
| coverpkg.sh | ||
| doc.go | ||
| Dockerfile | ||
| errors.go | ||
| LICENSE | ||
| MAINTAINERS | ||
| Makefile | ||
| manifests.go | ||
| README.md | ||
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| RELEASE-CHECKLIST.md | ||
| ROADMAP.md | ||
| tags.go | ||
Distribution
The Docker toolset to pack, ship, store, and deliver content.
This repository's main product is the Docker Registry 2.0 implementation for storing and distributing Docker images. It supersedes the docker/docker-registry project with a new API design, focused around security and performance.
This repository contains the following components:
| Component | Description |
|---|---|
| registry | An implementation of the Docker Registry HTTP API V2 for use with docker 1.6+. |
| libraries | A rich set of libraries for interacting with distribution components. Please see godoc for details. Note: These libraries are unstable. |
| specifications | Distribution related specifications are available in docs/spec |
| documentation | Docker's full documentation set is available at docs.docker.com. This repository contains the subset related just to the registry. |
How does this integrate with Docker engine?
This project should provide an implementation to a V2 API for use in the Docker
core project. The API should be embeddable
and simplify the process of securely pulling and pushing content from docker
daemons.
What are the long term goals of the Distribution project?
The Distribution project has the further long term goal of providing a secure tool chain for distributing content. The specifications, APIs and tools should be as useful with Docker as they are without.
Our goal is to design a professional grade and extensible content distribution system that allow users to:
- Enjoy an efficient, secured and reliable way to store, manage, package and exchange content
- Hack/roll their own on top of healthy open-source components
- Implement their own home made solution through good specs, and solid extensions mechanism.
More about Registry 2.0
The new registry implementation provides the following benefits:
- faster push and pull
- new, more efficient implementation
- simplified deployment
- pluggable storage backend
- webhook notifications
For information on upcoming functionality, please see ROADMAP.md.
Who needs to deploy a registry?
By default, Docker users pull images from Docker's public registry instance. Installing Docker gives users this ability. Users can also push images to a repository on Docker's public registry, if they have a Docker Hub account.
For some users and even companies, this default behavior is sufficient. For others, it is not.
For example, users with their own software products may want to maintain a registry for private, company images. Also, you may wish to deploy your own image repository for images used to test or in continuous integration. For these use cases and others, deploying your own registry instance may be the better choice.
Migration to Registry 2.0
For those who have previously deployed their own registry based on the Registry 1.0 implementation and wish to deploy a Registry 2.0 while retaining images, data migration is required. A tool to assist with migration efforts has been created. For more information see [docker/migrator] (https://github.com/docker/migrator).
Contribute
Please see CONTRIBUTING.md for details on how to contribute issues, fixes, and patches to this project. If you are contributing code, see the instructions for building a development environment.
Support
If any issues are encountered while using the Distribution project, several avenues are available for support:
| IRC | #docker-distribution on FreeNode |
|---|---|
| Issue Tracker | github.com/docker/distribution/issues |
| Google Groups | https://groups.google.com/a/dockerproject.org/forum/#!forum/distribution |
| Mailing List | docker@dockerproject.org |
License
This project is distributed under Apache License, Version 2.0.