Simple SAML php

As a popular open-source IdP, SimpleSAMLphp can be used to provide an authentication endpoint for Rocket.Chat and the built-in SAML support. Assuming that you have a SimpleSAMLphp IdP up and running following this guide QuickStart instructions, you can find the metadata for the Rocket.Chat SAML Service Provider (SP) here, where 'my-app' is whatever you put in the Custom Provider box in the Rocket.Chat SAML admin page:

https://my-rocketchat-domain.tld/_saml/metadata/my-app

1. Copy the XML on this page

2. Open the metadata converter page in your SimpleSAMLphp admin UI found at: /admin/metadata-converter.php

3. Paste the XML, and submit it

4. Copy the resulting PHP output to the file in your SimpleSAMLphp installation under metadata: /metadata/saml20-sp-remote.php

5. You should now see your SP on the SimpleSAMLphp Federation page, listed as a trusted SAML 2.0 SP at: module.php/core/frontpage_federation.php

IdP Attribute Mapping

Use the following attributes required to return user information to Rocket.Chat:

Idp Returned Attribute Name	Usage
cn	User's Full Name
email	User's Email Address
username	User's username