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mod_auth_openidc
mod_auth_openidc is an authentication/authorization module for the Apache 2.x
HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an
OpenID Connect Provider.
Overview
This module enables an Apache 2.x web server to operate as an OpenID Connect
Relying Party (RP) to an OpenID Connect Provider (OP). It authenticates users against an OpenID Connect Provider,
receives user identity information from the OP in a so called ID Token and passes on the identity information
(a.k.a. claims) in the ID Token to applications hosted and protected by the Apache web server.
The protected content and/or applications can be served by the Apache server itself or it can be served from elsewhere
when Apache is configured as a Reverse Proxy in front of the origin server(s).
By default the module sets the REMOTE_USER variable to the id_token [sub] claim, concatenated with the OP's Issuer
identifier ([sub]@[iss]). Other id_token claims are passed in HTTP headers and/or environment variables together with those
(optionally) obtained from the UserInfo endpoint.
It allows for authorization rules (based on standard Apache Require primitives) that can be matched against the set
of claims provided in the id_token/ userinfo claims.
mod_auth_openidc supports the following specifications:
- OpenID Connect Core 1.0 (Basic, Implicit, Hybrid and Refresh flows)
- OpenID Connect Discovery 1.0
- OpenID Connect Dynamic Client Registration 1.0
- OAuth 2.0 Multiple Response Type Encoding Practices 1.0
- OAuth 2.0 Form Post Response Mode 1.0
- RFC7 7636 - Proof Key for Code Exchange by OAuth Public Clients
- OpenID Connect Session Management 1.0 (implementers draft; see the Wiki for information on how to configure it)
- OpenID Connect Front-Channel Logout 1.0 (implementers draft)
- OpenID Connect Back-Channel Logout 1.0 (implementers draft)
- Encoding claims in the OAuth 2 state parameter using a JWT (draft spec)
- OpenID Connect Token Bound Authentication (draft spec; when combined with mod_token_binding)
- OAuth 2.0 Token Binding for Authorization Codes for Web Server Clients (draft spec)
For an exhaustive description of all configuration options, see the file auth_openidc.conf
in this directory. This file can also serve as an include file for httpd.conf.
Support
Give back to mod_auth_openidc
Please consider giving back by sponsoring mod_auth_openidc development/maintenance/continuity and to express
your gratitude as a happy user or company.
See: https://www.patreon.com/mod_auth_openidc
Sponsored by: GLUU
Community Support
For generic questions, see the Wiki pages with Frequently Asked Questions at:
https://github.com/zmartzone/mod_auth_openidc/wiki
There is a Google Group/mailing list at:
mod_auth_openidc@googlegroups.com
The corresponding forum/archive is at:
https://groups.google.com/forum/#!forum/mod_auth_openidc
Any questions/issues should go to the mailing list.
Commercial Services
For commercial Support contracts, Professional Services, Training and use-case specific support you can contact:
sales@zmartzone.eu
How to Use It
OpenID Connect SSO with Google+ Sign-In
Sample configuration for using Google as your OpenID Connect Provider running on
www.example.com and https://www.example.com/example/redirect_uri registered
as the redirect_uri for the client through the Google API Console. You will also
have to enable the Google+ API under APIs & auth in the Google API console.
OIDCProviderMetadataURL https://accounts.google.com/.well-known/openid-configuration
OIDCClientID <your-client-id-administered-through-the-google-api-console>
OIDCClientSecret <your-client-secret-administered-through-the-google-api-console>
# OIDCRedirectURI is a vanity URL that must point to a path protected by this module but must NOT point to any content
OIDCRedirectURI https://www.example.com/example/redirect_uri
OIDCCryptoPassphrase <password>
<Location /example/>
AuthType openid-connect
Require valid-user
</Location>
Note if you want to securely restrict logins to a specific Google Apps domain you would not only
add the hd=<your-domain> setting to the OIDCAuthRequestParams primitive for skipping the Google Account
Chooser screen, but you must also ask for the email scope using OIDCScope and use a Require claim
authorization setting in the Location primitive similar to:
OIDCScope "openid email"
Require claim hd:<your-domain>
The above is an authorization example of an exact match of a provided claim against a string value.
For more authorization options see the Wiki page on Authorization.
Quickstart with a generic OpenID Connect Provider
- install and load
mod_auth_openidc.soin your Apache server - configure your protected content/locations with
AuthType openid-connect - set
OIDCRedirectURIto a "vanity" URL within a location that is protected by mod_auth_openidc - register/generate a Client identifier and a secret with the OpenID Connect Provider and configure those in
OIDCClientIDandOIDCClientSecretrespectively - and register the
OIDCRedirectURIas the Redirect or Callback URI with your client at the Provider - configure
OIDCProviderMetadataURLso it points to the Discovery metadata of your OpenID Connect Provider served on the.well-known/openid-configurationendpoint - configure a random password in
OIDCCryptoPassphrasefor session/state encryption purposes
LoadModule auth_openidc_module modules/mod_auth_openidc.so
OIDCProviderMetadataURL <issuer>/.well-known/openid-configuration
OIDCClientID <client_id>
OIDCClientSecret <client_secret>
# OIDCRedirectURI is a vanity URL that must point to a path protected by this module but must NOT point to any content
OIDCRedirectURI https://<hostname>/secure/redirect_uri
OIDCCryptoPassphrase <password>
<Location /secure>
AuthType openid-connect
Require valid-user
</Location>
For details on configuring multiple providers see the Wiki.
Quickstart for Other Providers
See the Wiki for configuration docs for other OpenID Connect Providers:
Disclaimer
This software is open sourced by ZmartZone IAM. For commercial services
you can contact ZmartZone IAM as described above in the Support section.