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Synapse
Integrating Synapse with the Authelia OpenID Connect 1.0 Provider.
2022-06-15 17:51:47 +1000
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Tested Versions

{{% oidc-common %}}

Assumptions

This example makes the following assumptions:

  • Application Root URL: https://matrix.example.com/
  • Authelia Root URL: https://auth.example.com/
  • Client ID: synapse
  • Client Secret: insecure_secret

Configuration

Authelia

The following YAML configuration is an example Authelia client configuration for use with Synapse which will operate with the application example:

identity_providers:
  oidc:
    ## The other portions of the mandatory OpenID Connect 1.0 configuration go here.
    ## See: https://www.authelia.com/c/oidc
    clients:
      - client_id: 'synapse'
        client_name: 'Synapse'
        client_secret: '$pbkdf2-sha512$310000$c8p78n7pUMln0jzvd4aK4Q$JNRBzwAo0ek5qKn50cFzzvE9RXV88h1wJn5KGiHrD0YKtZaR/nCb2CJPOsKaPK0hjf.9yHxzQGZziziccp6Yng'  # The digest of 'insecure_secret'.
        public: false
        authorization_policy: 'two_factor'
        redirect_uris:
          - 'https://synapse.example.com/_synapse/client/oidc/callback'
        scopes:
          - 'openid'
          - 'profile'
          - 'email'
        userinfo_signed_response_alg: 'none'

Application

To configure Synapse to utilize Authelia as an OpenID Connect 1.0 Provider:

  1. Edit your Synapse homeserver.yaml configuration file and add configure the following:
oidc_providers:
  - idp_id: authelia
    idp_name: "Authelia"
    idp_icon: "mxc://authelia.com/cKlrTPsGvlpKxAYeHWJsdVHI"
    discover: true
    issuer: "https://auth.example.com"
    client_id: "synapse"
    client_secret: "insecure_secret"
    scopes: ["openid", "profile", "email"]
    allow_existing_users: true
    user_mapping_provider:
      config:
        subject_claim: "sub"
        localpart_template: "{{ user.preferred_username }}"
        display_name_template: "{{ user.name }}"
        email_template: "{{ user.email }}"

See Also