ExternalIDClaim option for OAuth2 OIDC auth source (#37229)
This PR adds an External ID Claim Name configuration field to the OIDC auth source. When set, Gitea uses the specified JWT claim as the user's `ExternalID` instead of the default `sub` claim. This PR fixes the bug when migrating from Azure AD V2 to OIDC. When an admin migrates the same auth source to OIDC, goth's `openidConnect` provider defaults to using the `sub` claim as `UserID`. However, Azure AD's `sub` is a pairwise identifier: > `sub`: The subject is a pairwise identifier and is unique to an application ID. If a single user signs into two different apps using two different client IDs, those apps receive two different values for the subject claim. https://learn.microsoft.com/en-us/entra/identity-platform/id-token-claims-reference#payload-claims As a result, every existing user appears as a new account after migration. To fix this issue, Gitea should use `oid` claim for `UserID`. > `oid`: This ID uniquely identifies the user across applications - two different applications signing in the same user receives the same value in the oid claim. Note: The `oid` claim is not included in Azure AD tokens by default. The `profile` scope must be added to the Scopes field of the auth source.
Gitea
Purpose
The goal of this project is to make the easiest, fastest, and most painless way of setting up a self-hosted Git service.
As Gitea is written in Go, it works across all the platforms and architectures that are supported by Go, including Linux, macOS, and Windows on x86, amd64, ARM and PowerPC architectures. This project has been forked from Gogs since November of 2016, but a lot has changed.
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Documentation
You can find comprehensive documentation on our official documentation website.
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If you have any suggestions or would like to contribute to it, you can visit the documentation repository
Building
From the root of the source tree, run:
TAGS="bindata" make build
or if SQLite support is required:
TAGS="bindata sqlite sqlite_unlock_notify" make build
The build target is split into two sub-targets:
make backendwhich requires Go Stable, the required version is defined in go.mod.make frontendwhich requires Node.js LTS or greater and pnpm.
Internet connectivity is required to download the go and npm modules. When building from the official source tarballs which include pre-built frontend files, the frontend target will not be triggered, making it possible to build without Node.js.
More info: https://docs.gitea.com/installation/install-from-source
Using
After building, a binary file named gitea will be generated in the root of the source tree by default. To run it, use:
./gitea web
Note
If you're interested in using our APIs, we have experimental support with documentation.
Contributing
Expected workflow is: Fork -> Patch -> Push -> Pull Request
Note
- YOU MUST READ THE CONTRIBUTORS GUIDE BEFORE STARTING TO WORK ON A PULL REQUEST.
- If you have found a vulnerability in the project, please write privately to security@gitea.io. Thanks!
Translating
Translations are done through Crowdin. If you want to translate to a new language, ask one of the managers in the Crowdin project to add a new language there.
You can also just create an issue for adding a language or ask on Discord on the #translation channel. If you need context or find some translation issues, you can leave a comment on the string or ask on Discord. For general translation questions there is a section in the docs. Currently a bit empty, but we hope to fill it as questions pop up.
Get more information from documentation.
Official and Third-Party Projects
We provide an official go-sdk, a CLI tool called tea and an action runner for Gitea Action.
We maintain a list of Gitea-related projects at gitea/awesome-gitea, where you can discover more third-party projects, including SDKs, plugins, themes, and more.
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FAQ
How do you pronounce Gitea?
Gitea is pronounced /ɡɪ’ti:/ as in "gi-tea" with a hard g.
Why is this not hosted on a Gitea instance?
We're working on it.
Where can I find the security patches?
In the release log or the change log, search for the keyword SECURITY to find the security patches.
License
This project is licensed under the MIT License. See the LICENSE file for the full license text.





























