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Git Credential Manager for Mac and Linux stores credentials for Git version control securely. Provides secure logon for Visual Studio Team Services (visualstudio.com).

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Git Credential Manager for Mac and Linux

Stores credentials for Git version control securely. Provides secure logon for Visual Studio Team Services (https://visualstudio.com).

License

This source code and artifacts are released under the terms of the MIT License. The binary distribution (git-credential-manager-2.0.2.jar) is released under the terms of the Git Credential Manager for Mac and Linux software license.

Build status

This project has continuous integration hosted by Travis CI: Build Status

How does it work?

Once configured with Git, if Git needs credentials for reading from or writing to a Git remote, it sends a request to the program(s) configured as credential.helper, as described in gitcredentials. If none of the credential helpers have valid credentials, Git will prompt for a username and password and then ask the credential helper(s) to save the values for later retrieval.

On Mac OS X, the GCM4ML stores credentials in the Keychain. On Linux, the GCM4ML stores credentials in the GNOME Keyring. If you used an older version of the GCM4ML that stored credentials in the insecureStore.xml file, its contents will be imported into secure storage on first run and then the file will be renamed to insecureStore.xml.old. Once you are satisfied you will no longer need to downgrade the GCM4ML, you can delete insecureStore.xml.old.

If you are connecting to a Git repository hosted in a Visual Studio Team Services (VSTS) account, the GCM4ML will attempt to open an internal web browser window so you can authenticate and authorize access to your account (via OAuth 2.0). If a web browser cannot be opened (this usually happens because the system doesn't have the required components), instructions will be provided to use any external web browser (via OAuth 2.0 Device Flow) so you can authenticate and authorize access to your account. In either case, the credential manager will then use the access token to create a VSTS Personal Access Token (PAT) scoped for vso.code_write, effectively granting Git permission to read and write to your Git repositories hosted in VSTS.

If you are connecting to Git repositories hosted elsewhere, the GCM4ML works a lot like git-credential-store and will store & retrieve your username & password.

Data collection

There are no telemetry nor crash-reporting features in the GCM4ML. Aside from the interactions with Visual Studio Team Services (VSTS) from your device and under your account, the only data collected are the following pieces of non-personally-identifiable information in the user-agent string:

  1. Operating System name
  2. Operating System version
  3. Operating System architecture
  4. Java Virtual Machine name
  5. Java Virtual Machine version
  6. GCM version

For example:

git-credential-manager (Mac OS X; 10.10.5; x86_64) Java HotSpot(TM) 64-Bit Server VM/1.8.0_92-b14 git-tools/2.0.2

The collection of this data is strictly for statistical purposes and is governed by the Microsoft Visual Studio Product Family Privacy Statement.

How do I install it?

Follow the instructions in Install.md.

How do I build it?

If you have version 6 or better of the JDK, as well as version 3 or better of Maven, you're all set! Run the following:

mvn clean verify

This will download the dependencies, compile the code, run unit tests, and package everything. You should end up with a file named something like git-credential-manager-VERSION.jar under the target sub-folder.

How can I contribute?

Please refer to Contributing.md.

Reporting Security Vulnerabilities

If you believe you have found a security vulnerability in this project, please follow these steps to report it. For more information on how vulnerabilities are disclosed, see Coordinated Vulnerability Disclosure.

Code of Conduct

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.

How can I find out more?

Visit the Git Credential Manager page or browse the source code on GitHub.

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Git Credential Manager for Mac and Linux stores credentials for Git version control securely. Provides secure logon for Visual Studio Team Services (visualstudio.com).

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