Jellyfin SSO Plugin

This plugin allows users to sign in through an SSO provider (such as Google, Microsoft, or your own provider). This enables one-click signin.

recording-resized.mp4

Existing users may link new SSO accounts, or remove existing links using self-service at /SSOViews/linking.

Current State:

This is 100% alpha software! PRs are welcome to improve the code.

There is NO admin configuration! You must use the API to configure the program! Added by strazto in PR #18 and #27.

This is for Jellyfin 10.8 and only on the Web UI!

This README reflects the branch it is currently on! Switch tags to view version-specific documentation!

Tested Providers

Find provider specific documentation in providers.md

• Authelia
• authentik
• Keycloak
  • OIDC & SAML
• Google OpenID: Works, but usernames are all numeric

Supported Protocols

• OpenID
• SAML

Security

This is my first time writing C# so please take all of the code written here with a grain of salt. This program should be reasonably secure since it validates all information passed from the client with either a certificate or a secret internal state.

Installing

Add the package repo https://raw.githubusercontent.com/9p4/jellyfin-plugin-sso/manifest-release/manifest.json to your Jellyfin plugin repositories.

Then, install the plugin from the plugin catalog!

See Contributing for instructions on how to build from source.

(Fallback) Legacy package repo (Versions <= 3.3.0)

We have transitioned to a release system that automates distribution, packaging & hosting. This system is new, and if something goes wrong, you can try using the old package repository as a fallback.

Instead add the old package repository: https://repo.ersei.net/jellyfin/manifest.json to your jellyfin plugin repositories.

Installing cutting edge/nightly builds

If you're impatient/brave/feel like helping us test things out, you can install the nightly build of the plugin, which is automatically built against the main branch.

The nightly build can be installed from the main plugin repo, and will always have a version number of 0.0.0.9000.

The nightly build may have new features unavailable in other builds, but be warned, things may change frequently in nightly builds, and things may break, and you could lose data.

Roadmap

• Admin page
• Automated tests
• Add role/claims support
• Use canonical usernames instead of preferred usernames
• Add user self-service
• Finalize RBAC access for all user properties

Examples

SAML

Example for adding a SAML configuration with the API using curl:

curl -v -X POST -H "Content-Type: application/json" -d '{"samlEndpoint": "https://keycloak.example.com/realms/test/protocol/saml", "samlClientId": "jellyfin-saml", "samlCertificate": "Very long base64 encoded string here", "enabled": true, "enableAuthorization": true, "enableAllFolders": false, "enabledFolders": [], "adminRoles": ["jellyfin-admin"], "roles": ["allowed-to-use-jellyfin"], "enableFolderRoles": true, "folderRoleMapping": [{"role": "allowed-to-watch-movies", "folders": ["cc7df17e2f3509a4b5fc1d1ff0a6c4d0", "f137a2dd21bbc1b99aa5c0f6bf02a805"]}]}' "https://myjellyfin.example.com/sso/SAML/Add/PROVIDER_NAME?api_key=API_KEY_HERE"

Make sure that the JSON is the same as the configuration you would like.

The SAML provider must have the following configuration (I am using Keycloak, and I cannot speak for whatever you will see):

• Sign Documents on
• Sign Assertions off
• Client Signature Required off
• Redirect URI: https://myjellyfin.example.com/sso/SAML/p/PROVIDER_NAME
• Base URL: https://myjellyfin.example.com
• Master SAML processing URL: https://myjellyfin.example.com/sso/SAML/p/PROVIDER_NAME

Make sure that clientid is replaced with the actual client ID and PROVIDER_NAME is replaced with the chosen provider name!

OpenID

Example for adding an OpenID configuration with the API using curl

curl -v -X POST -H "Content-Type: application/json" -d '{"oidEndpoint": "https://keycloak.example.com/realms/test", "oidClientId": "jellyfin-oid", "oidSecret": "short secret here", "enabled": true, "enableAuthorization": true, "enableAllFolders": false, "enabledFolders": [], "adminRoles": ["jellyfin-admin"], "roles": ["allowed-to-use-jellyfin"], "enableFolderRoles": true, "folderRoleMapping": [{"role": "allowed-to-watch-movies", "folders": ["cc7df17e2f3509a4b5fc1d1ff0a6c4d0", "f137a2dd21bbc1b99aa5c0f6bf02a805"]}], "roleClaim": "realm_access", "oidScopes" : [""]}' "https://myjellyfin.example.com/sso/OID/Add/PROVIDER_NAME?api_key=API_KEY_HERE"

The OpenID provider must have the following configuration (again, I am using Keycloak)

• Access Type: Confidential
• Standard Flow Enabled
• Redirect URI: https://myjellyfin.example.com/sso/OID/r/PROVIDER_NAME
• Base URL: https://myjellyfin.example.com

Make sure that clientid is replaced with the actual client ID and PROVIDER_NAME is replaced with the chosen provider name!

API Endpoints

The API is all done from a base URL of /sso/

SAML

Flow

• POST SAML/p/PROVIDER_NAME: This is the SAML POST endpoint. It accepts a form response from the SAML provider and returns HTML and JavaScript for the client to login with a given provider name.
• GET SAML/p/PROVIDER_NAME: This is the SAML initiator: it will begin the authorization flow for SAML with a given provider name.
• POST SAML/Auth/PROVIDER_NAME: This is the SAML client-side API: the HTML and JavaScript client will call this endpoint to receive Jellyfin credentials given a provider name. Post format is in JSON with the following keys:
  • deviceId: string. Device ID.
  • deviceName: string. Device name.
  • appName: string. App name.
  • appVersion: string. App version.
  • data: string. The signed SAML XML request. Used to verify a request.

Configuration

These all require authorization. Append an API key to the end of the request: curl "http://myjellyfin.example.com/sso/SAML/Get?api_key=API_KEY_HERE"

• POST SAML/Add/PROVIDER_NAME: This adds or overwrites a configuration for SAML for the given provider name. It accepts JSON with the following keys and format:
  • samlEndpoint: string. The SAML endpoint.
  • samlClientId: string. The SAML client ID.
  • samlCertificate: string. The base64 encoded SAML certificate.
  • enabled: boolean. Determines if the provider is enabled or not.
  • enableAuthorization: boolean: Determines if the plugin sets permissions for the user. If false, the user will start with no permissions and an administrator will add permissions. The permissions of existing users will not be rewritten on subsequent logins.
  • enableAllFolders: boolean. Determines if the client logging in is allowed access to all folders.
  • enabledFolders: array of strings. If enableAllFolders is set to false, then this will be used to determine what folders the users who log in through this provider are allowed to use.
  • roles: array of strings. This validates the SAML response against the Role attribute. If a user has any of these roles, then the user is authenticated. Leave blank to disable role checking.
  • adminRoles: array of strings. This uses SAML response's Role attributes. If a user has any of these roles, then the user is an admin. Leave blank to disable (default is to not enable admin permissions).
  • enableFolderRoles: boolean. Determines if role-based folder access should be used.
  • folderRoleMapping: object in the format "role": string and "folders": array of strings. The user with this role will have access to the following folders if enableFolderRoles is enabled. To get the IDs of the folders, GET the /Library/MediaFolders URL with an API key. Look for the Id attribute.
  • defaultProvider: string. The set provider then gets assigned to the user after they have logged in. If it is not set, nothing is changed. With this, a user can login with SSO but is still able to log in via other providers later. See the Unregister endpoint.
• GET SAML/Del/PROVIDER_NAME: This removes a configuration for SAML for a given provider name.
• GET SAML/Get: Lists the configurations currently available.

OpenID

Flow

• GET OID/r/PROVIDER_NAME: This is the OpenID callback path. This will return HTML and JavaScript for the client to login with a given provider name.
• GET OID/p/PROVIDER_NAME: This is the OpenID initiator: it will begin the authorization flow for OpenID with a given provider name.
• POST OID/Auth/PROVIDER_NAME: This is the OpenID client-side API: the HTML and JavaScript client will call this endpoint to receive Jellyfin credentials for a given provider name. Post format is in JSON with the following keys:
  • deviceId: string. Device ID.
  • deviceName: string. Device name.
  • appName: string. App name.
  • appVersion: string. App version.
  • data: string. The OpenID state. Used to verify a request.

Configuration

These all require authorization. Append an API key to the end of the request: curl "http://myjellyfin.example.com/sso/OID/Get?api_key=9c6e5fae4ae145669e6b7a3942f813b7"

• POST OID/Add/PROVIDERNAME: This adds or overwrites a configuration for OpenID with a given provider name. It accepts JSON with the following keys and format:
  • oidEndpoint: string. The OpenID endpoint. Must have a .well-known path available.
  • oidClientId: string. The OpenID client ID.
  • oidSecret: string. The OpenID secret.
  • enabled: boolean. Determines if the provider is enabled or not.
  • enableAuthorization: boolean: Determines if the plugin sets permissions for the user. If false, the user will start with no permissions and an administrator will add permissions. The permissions of existing users will not be rewritten on subsequent logins.
  • enableAllFolders: boolean. Determines if the client logging in is allowed access to all folders.
  • enabledFolders: array of strings. If enableAllFolders is set to false, then this will be used to determine what folders the users who log in through this provider are allowed to use.
  • roles: array of strings. This validates the OpenID response against the claim set in roleClaim. If a user has any of these roles, then the user is authenticated. Leave blank to disable role checking. This currently only works for Keycloak (to my knowledge).
  • adminRoles: array of strings. This uses the OpenID response against the claim set in roleClaim. If a user has any of these roles, then the user is an admin. Leave blank to disable (default is to not enable admin permissions).
  • enableFolderRoles: boolean. Determines if role-based folder access should be used.
  • folderRoleMapping: object in the format "role": string and "folders": array of strings. The user with this role will have access to the following folders if enableFolderRoles is enabled. To get the IDs of the folders, GET the /Library/MediaFolders URL with an API key. Look for the Id attribute.
  • roleClaim: string. This is the value in the OpenID response to check for roles. For Keycloak, it is realm_access.roles by default. The first element is the claim type, the subsequent values are to parse the JSON of the claim value. Use a "\." to denote a literal ".". This expects a list of strings from the OIDC server.
  • oidScopes : array of strings. Each contains an additional scope name to include in the OIDC request.
    • For some OIDC providers (For example, authelia), additional scopes may be required in order to validate group membership in role claim.
    • Leave empty to only request the default scopes.
  • defaultProvider: string. The set provider then gets assigned to the user after they have logged in. If it is not set, nothing is changed. With this, a user can login with SSO but is still able to log in via other providers later. See the Unregister endpoint.
  • defaultUsernameClaim: string. The provider will use the claim to create the users' usernames. If not set, it fallbacks to preferred_username.
  • requireHttps: boolean. Determines whether the OpenID discovery endpoint requires HTTP. It is advised NOT to set this to false. If not set, it fallbacks to true.
• GET OID/Del/PROVIDER_NAME: This removes a configuration for OpenID for a given provider name.
• GET OID/Get: Lists the configurations currently available.
• GET OID/States: Lists currently active OpenID flows in progress.

Misc

• POST Unregister/username: This "unregisters" a user from SSO. A JSON-formatted string must be posted with the new authentication provider. To reset to the default provider, use Jellyfin.Server.Implementations.Users.DefaultAuthenticationProvider like so: curl -X POST -H "Content-Type: application/json" -d '"Jellyfin.Server.Implementations.Users.DefaultAuthenticationProvider"' "https://myjellyfin.example.com/sso/Unregister/username?api_key=API_KEY

Limitations

There is no GUI to sign in. You have to make it yourself! The buttons should redirect to something like this: https://myjellyfin.example.com/sso/SAML/p/clientid replacing clientid with the provider client ID and SAML with the auth scheme (either SAML or OID).

Furthermore, there is no functional admin page (yet). PRs for this are welcome. In the meantime, you have to interact with the API to add or remove configurations. Added by strazto in PR #18 and #27.

There is also no logout callback. Logging out of Jellyfin will log you out of Jellyfin only, instead of the SSO provider as well.

This only supports Jellyfin on it's own domain (for now). This is because I'm using string concatenation for generating some URLs. A PR is welcome to patch this. Fixed in PR #1.

This only works on the web UI. The user must open the Jellyfin web UI BEFORE using the SSO program to populate some values in the localStorage. Fixed by implementing a comment by Pfuenzle in Issue #5.

Contributing

Building

This is built with .NET 6.0. Build with dotnet publish . for the debug release in the SSO-Auth directory. Copy over the IdentityModel.OidcClient.dll, the IdentityModel.dll and the SSO-Auth.dll files in the /bin/Debug/net6.0/publish directory to a new folder in your Jellyfin configuration: config/plugins/sso.

VSCode Workflow

An example .vscode configuration may be found at strazto/jellyfin-plugin-sso-vscode.

From the root of this repo, you may clone that to .vscode

# From repo root

git clone https://github.com/strazto/jellyfin-plugin-sso-vscode .vscode

Releasing

This plugin uses JPRM to build the plugin. Refer to the documentation there to install JPRM.

Build the zipped plugin with jprm --verbosity=debug plugin build ..

CI Releases

Anything merged to the main branch will be built and published by our CI system.

Anything tagged/released as a formal Github release will also be built and published by our CI system.

If you wish to use releases from your own fork, refer to Installing, however, you will need to change the url to the manifest file, https://raw.githubusercontent.com/9p4/jellyfin-plugin-sso/manifest-release/manifest.json so that it refers to your fork.

Credits and Thanks

Much thanks to the Jellyfin LDAP plugin for offering a base for me to start on my plugin.

I use the AspNet SAML library for the SAML side of things (patched to work with Base64 on non-Windows machines).

I use the IdentityModel OIDC Client library for the OpenID side of things.

Thanks to these projects, without which I would have been pulling my hair out implementing these protocols from scratch.

Something funny about the origins of this plugin

It totally slipped my mind, but I had requested this functionality a few years back. What goes around comes around, I guess.