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Zulip

What is Zulip​

From https://zulip.com

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Zulip: Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.

Preperation​

The following placeholders will be used:

  • authentik.company is the FQDN of the authentik install.
  • zulip.company is the FQDN of the Zulip instance.

Create an application in authentik and note the slug, as this will be used later. Create a SAML provider with the following parameters:

  • ACS URL: https://zulip.company/complete/saml/
  • Issuer: https://authentik.company
  • Service Provider Binding: Post
  • Signing Keypair: Select any certificate you have.
  • Property mappings: Select all Managed mappings.

Zulip Configuration​

Zulip is a Django application and is configured using /etc/zulip/settings.py. Only settings that differ from the defaults are displayed below. Please make sure you have the latest settings.py file as more settings might have been added to defaults since you installed Zulip.

Uncomment zproject.backends.SAMLAuthBackend inside the AUTHENTICATION_BACKENDS parameter to enable SAML support and fill in the following required configuration.

SOCIAL_AUTH_SAML_ORG_INFO = {
    "en-US": {
        "displayname": "authentik Zulip",
        "name": "zulip",
        "url": "{}{}".format("https://", EXTERNAL_HOST),
    },
}

SOCIAL_AUTH_SAML_ENABLED_IDPS: Dict[str, Any] = {
    # idp identifier and settings
    "authentik": {

        # KEEP OTHER SETTINGS AS DEFAULT OR CONFIGURE THEM ACCORDING TO YOUR PREFERENCES
        "entity_id": "https://authentik.company",
        "url": "https://authentik.company/application/saml/<application slug>/sso/binding/redirect/",
        "display_name": "authentik SAML",
    },
}

Place the certificate you associated with the SAML provider in authentik inside the /etc/zulip/saml/idps directory. The certificate file name must match the idp identifier name you set in the configuration (i.e. authentik.crt).

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Remember to restart Zulip.

Additional Resources​

Please refer to the following for further information: