website/integrations: update/extend Gitea integration (#3946)
* website/docs: update/extend gitea integration * website/docs: update/extend gitea integration / run prettier * website/integrations: update/extend Gitea integration / switched to database based filtering Co-authored-by: NWHirschfeld <git@nwhirschfeld.de>
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NWHirschfeld
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@ -13,7 +13,7 @@ Gitea is a community managed lightweight code hosting solution written in Go. It
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:::
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:::note
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This is based on authentik 2021.10.3 and Gitea 1.16.0+rc1 installed using https://docs.gitea.io/en-us/install-from-binary/. Instructions may differ between versions.
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This is based on authentik 2022.10.1 and Gitea 1.17.3 installed using the official docker image [https://docs.gitea.io/en-us/install-with-docker/](https://docs.gitea.io/en-us/install-with-docker/). Instructions may differ between versions.
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:::
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## Preparation
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@ -25,7 +25,7 @@ The following placeholders will be used:
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### Step 1
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In authentik, create an _OAuth2/OpenID Provider_ (under _Resources/Providers_) with these settings:
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In authentik, create an _OAuth2/OpenID Provider_ (under _Applications/Providers_) with these settings:
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:::note
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Only settings that have been modified from default have been listed.
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@ -42,7 +42,7 @@ Take note of the `Client ID` and `Client Secret`, you'll need to give them to Gi
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### Step 2
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In authentik, create an application (under _Resources/Applications_) which uses this provider. Optionally apply access restrictions to the application using policy bindings.
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In authentik, create an application (under _Applications/Applications_) which uses this provider. Optionally apply access restrictions to the application using policy bindings.
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:::note
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Only settings that have been modified from default have been listed.
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@ -62,7 +62,7 @@ Change the following fields
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- OAuth2 Provider: OpenID Connect
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- Client ID (Key): Step 1
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- Client Secret: Step 1
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- Icon URL: https://goauthentik.io/img/icon.png
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- Icon URL: https://authentik.company/static/dist/assets/icons/icon.svg
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- OpenID Connect Auto Discovery URL: https://authentik.company/application/o/gitea-slug/.well-known/openid-configuration
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- Additional Scopes: `email profile`
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@ -70,6 +70,85 @@ Change the following fields
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`Add Authentication Source` and you should be done. Your Gitea login page should now have a `Sign in With` followed by the authentik logo which you can click on to sign-in to Gitea with Authentik creds.
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### Step 4 _(optional Claims for authorization management)_
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:::note
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This step is **optional** and shows how to set claims to control the permissions of users in gitea by adding them to groups.
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:::
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#### Define Groups
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The following groups will be used:
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- `gituser` for normal Gitea users.
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- `gitadmin` for Gitea users with administrative permissions.
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- `gitrestricted` for restricted Gitea users.
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:::note
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Users who are in none of these groups will not be able to log in to gitea.
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:::
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In authentik, create three groups (under _Directory/Groups_) with the _Name_ as mentioned above and leave other settings untouched.
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:::note
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You can add Members to the groups now or anytime later.
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:::
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#### Create Custom Property Mapping
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In authentik, create a custom property mapping (under _Customization/Property Mappings_) which has the type **Scope Mapping**.
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:::note
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Only settings that have been modified from default have been listed.
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:::
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- Name: authentik gitea OAuth Mapping: OpenID 'gitea'
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- Scope name: gitea
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And as **Expression** set the following:
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```(python)
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gitea_claims = {}
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if request.user.ak_groups.filter(name="gituser").exists():
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gitea_claims["gitea"]= "user"
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if request.user.ak_groups.filter(name="gitadmin").exists():
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gitea_claims["gitea"]= "admin"
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if request.user.ak_groups.filter(name="gitrestricted").exists():
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gitea_claims["gitea"]= "restricted"
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return gitea_claims
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```
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#### Add the custom Property Mapping to the Gitea Provider
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In authentik, edit the **Gitea** provider (under _Applications/Providers_) by clicking the pencil Icon.
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Unfold the _Advanced protocol settings_ and activate these Mappings:
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- authentik default OAuth Mapping: OpenID 'email'
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- authentik default OAuth Mapping: OpenID 'profile'
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- authentik default OAuth Mapping: OpenID 'openid'
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- authentik gitea OAuth Mapping: OpenID 'gitea'
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Click `Update` and the configuration authentik is done.
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#### Configure Gitea to use the new claims
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Navigate to the _Authentication Sources_ page at https://gitea.company/admin/auths and edit the **authentik** Authentication Source.
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Change the following fields
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- Additional Scopes: `email profile gitea`
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- Required Claim Name: `gitea`
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- Claim name providing group names for this source. (Optional): `gitea`
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- Group Claim value for administrator users. (Optional - requires claim name above): `admin`
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- Group Claim value for restricted users. (Optional - requires claim name above): `restricted`
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`Update Authentication Source` and you should be done.
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Users without any of the defined groups should no longer be able to log in.
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Users of the group **gitadmin** should have administrative privileges, and users in the group **gitrestricted** should be restricted.
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## Helm Chart Configuration
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authentik can be configured automatically in Gitea Kubernetes deployments via it's [Helm Chart](https://gitea.com/gitea/helm-chart/).
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