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mod_auth_openidc RP Integration#

Protect a web resource using mod_auth_openidc on Ubuntu 16.04#

The following section will walk you through the process of protecting an apache web site with mod_auth_openidc using GLUU as a IDP.

This is a summary of what we are going to do:

  1. Install apache web server
  2. Enable and configure ssl module
  3. Enable and test CGI script
  4. Install and configure mod_auth_openidc
  5. Configure a client on IDP(in this case GLUU)
  6. Test and sure sure it works

Let's go!

Install apache web server#

To install apache web server, follow the commands bellow.

# apt-get update
# apt-get install apache2
# systemctl start apache2

Enable and configure ssl module#

To enable and configure the ssl module, follow the steps bellow.

#### Activate the ssl module

# a2enmod ssl
#### Generate ssl certificate and key file

#mkdir /etc/apache2/ssl
#openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/apache2/ssl/apache.key -out /etc/apache2/ssl/apache.crt

Answer the questions that are asked. A template is given below.

    Country Name (2 letter code) [AU]:US
    State or Province Name (full name) [Some-State]:TX
    Organization Name (eg, company) [Internet Widgits Pty Ltd]:Acme Inc.
    Organizational Unit Name (eg, section) []:
    Common Name (e.g. server FQDN or YOUR name) []:www.mydomain.com
    Email Address []:help@mydomain.com

#### Configure Apache to use SSL

This section will guide you through the steps to configure apache to use the SSL module 1. Open the default-ssl.conf file

# vim /etc/apache2/sites-available/default-ssl.conf
1. Update the certificate locations with the newly created certificates /etc/apache2/ssl/apache.key and /etc/apache2/ssl/apache.crt

  1. Activate the SSL Virtual Host
# a2ensite default-ssl.conf
# systemctl restart apache2
# systemctl status apache2

Enable and test CGI script#

Follow the below steps to enable and configure CGI. 1. Enable cgi module

 #a2enmod cgid
 #systemctl restart apache2
 #systemctl status apache2
1. Sample cgi script * Create a file named printHeaders.cgi in folder usr/lib/cgi-bin
# vi /var/www/cgi-bin/printHeaders.cgi
* Paste the bellow code in that file
   #!/usr/bin/python
   import os
   d = os.environ
   k = d.keys()
   k.sort()
   print "Content-type: text/html\n\n"
   print "<HTML><Head><TITLE>Print Env Variables</TITLE></Head><BODY>"
   print "<h1>Environment Variables</H1>"
   for item in k:
       print "<p><B>%s</B>: %s </p>" % (item, d[item])
    print "</BODY></HTML>"
1. Change permissions python #chown www-data:www-data /usr/lib/cgi-bin/printHeaders.cgi #chmod ug+x /usr/lib/cgi-bin/printHeaders.cgi 1. Test #systemctl stop apache2 #apt-get start apache2 #systemctl status apache2 Now you're ready to test. Open your web browser, and point it at https://www.mydomain.com/cgi-bin/printHeaders.cgi You should see environment variables.

### Install and configure mod_auth_openidc

#### Installation

  • Download and install libjansson. #wget http://launchpadlibrarian.net/227040047/libjansson4_2.7-3_amd64.deb #dpkg -i libjansson4_2.7-3_amd64.deb You can found the latest release of libjansson here.

  • Install libapache2-mod-auth-openidc #apt-get update #apt-get install libapache2-mod-auth-openidc

  • Enable module #a2enmod auth_openidc #systemctl restart apache2

Configuration#

Configure a client on IDP(in this case GLUU)#

There are two methods for client registration: 1. Dynamic Client Registration 1. Manual Client Registration For this example, let's create the client manually in the Gluu Server. Launch your GLUU server and configure an openid conect client with the following parameters: `` text Name: mod_auth_openidc Client Secret: something-sufficiently-unguessable Application Type: Native Pre-Authorization: Enabled Redirect login uri: https://www.mydomain.com/callback Subject Type: Public Scopes: openid, profile, email Response Types: code

Make a note of the `client_secret` (you won't get to see it again)! You'll
also need the `client_id` for the next step.
Make sure `Redirect Login URIs` is provided.

  #### Configuration apache ressource with mod_auth_openidc
You are almost done! You'll need to configure mod_auth_openidc to
protect your server.

``` text
# vi /etc/apache2/sites-available/default-ssl.conf
Add the following right under`
OIDCProviderMetadataURL https://idp.mydomain.com/.well-known/openid-configuration
OIDCClientID (client-id-you-got-back-when-you-added-the-client)
OIDCClientSecret (your-client-secret)
OIDCRedirectURI https://www.mydomain.com/callback
OIDCResponseType code
OIDCScope "openid profile email"
OIDCSSLValidateServer Off
OIDCCryptoPassphrase (a-random-seed-value)
OIDCPassClaimsAs environment
OIDCClaimPrefix USERINFO_
OIDCPassIDTokenAs payload
<Location "/">
    Require valid-user
    AuthType openid-connect
</Location>
Changes the required parameters to match yours.

Test and make sure it works#

Point your browser to your website(https://www.mydomain.com/cgi-bin/printHeaders.cgi), you will be redirected to gluu idp login page, after successfull sing in, you will have access to your ressource.

Protect a web server ressource using mod_auth_openidc on Ubuntu 14.04#

Before you can install mod_auth_openidc, you need to have an Apache HTTPD server running with SSL enabled.

Apache Web Server#

It is assumed that all the hostnames will be dns resolvable. If not, then add the entries in /etc/hosts file on both the web server and Gluu Server.

If you don't have the Apache HTTPD server installed, use apt-get to install the Ubuntu standard distribution:

# apt-get install apache2
# service apache2 start

SSL Configuration#

The SSL Module is necessary for the Apache OpenID Connect Module. Please use the following commands to activate the ssl module.

# a2enmod ssl

The next step is to create a self-signed SSL Certificate.

  • Create a directory to put the generate the ssl certificate
# mkdir /etc/apache2/ssl
# openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/apache2/ssl/apache.key -out /etc/apache2/ssl/apache.crt
  • Answer the questions that are asked. A template is given below
    Country Name (2 letter code) [AU]:US
    State or Province Name (full name) [Some-State]:TX
    Organization Name (eg, company) [Internet Widgits Pty Ltd]:Acme Inc.
    Organizational Unit Name (eg, section) []:
    Common Name (e.g. server FQDN or YOUR name) []:www.mydomain.com
    Email Address []:help@mydomain.com

Configure Apache to use SSL#

This section will guide you through the steps to configure apache to use the SSL module

  1. Open the default-ssl.conf file
# vim /etc/apache2/sites-available/default-ssl.conf
  1. Update the certificate locations with the newly created certificates /etc/apache2/ssl/apache.key and /etc/apache2/ssl/apache.crt

  2. Activate the SSL Virtual Host and CGI

# a2ensite default-ssl.conf
# a2enmod cgid
# service apache2 restart

At this point, its a good time to test to make sure SSL and CGI are working. Point your browser at https://www.mydomain.com/cgi-bin/printHeaders.cgi You should see a list of current environment variables.

Configuration of mod_auth_openidc#

Installation#

mod_auth_openidc module depends on the Ubuntu packages libjansson4 and libhiredis0.10:

# apt-get install libjansson4
# apt-get install libhiredis0.10

You'll also need the mod_auth_openidc and libjose packages which can be downloaded from the Releases Page.

For example, at this time the current release is 2.1.3, so the command would be:

# wget https://github.com/pingidentity/mod_auth_openidc/releases/download/v2.1.3/libcjose_0.4.1-1ubuntu1.trusty.1_amd64.deb
# wget https://github.com/pingidentity/mod_auth_openidc/releases/download/v2.1.3/libapache2-mod-auth-openidc_2.1.3-1ubuntu1.trusty.1_amd64.deb
# dpkg -i libcjose_0.4.1-1ubuntu1.trusty.1_amd64.deb
# dpkg -i libapache2-mod-auth-openidc_2.1.3-1ubuntu1.trusty.1_amd64.deb

Note

Get the latest packages here: https://github.com/zmartzone/mod_auth_openidc/releases

Note, if you like to build from source, you can clone the project at Github Page

Now you can enable the module

# sudo a2enmod auth_openidc
# sudo service apache2 restart

Client Registration#

There are two methods for client registration:

  1. Dynamic Client Registration
  2. Manual Client Registration

For this example, let's create the client manually in the Gluu Server. When you add the client, use the following parameters:

Name: mod_auth_openidc
Client Secret: something-sufficiently-unguessable
Application Type: Web
Pre-Authorization: Enabled
login uri: https://www.mydomain.com/callback
Subject Type: Public
Scopes: openid, profile, email
Response Types: code
Grant Types: authorization_code

Make a note of the client_secret (you won't get to see it again)! You'll also need the client_id for the next step.

Install CGI script#

This cgi-script makes for a good test page!

# vi /usr/lib/cgi-bin/printHeaders.cgi

Then paste in this code

#!/usr/bin/python

import os

d = os.environ
k = d.keys()
k.sort()

print "Content-type: text/html\n\n"

print "<HTML><Head><TITLE>Print Env Variables</TITLE></Head><BODY>"
print "<h1>Environment Variables</H1>"
for item in k:
    print "<p><B>%s</B>: %s </p>" % (item, d[item])
print "</BODY></HTML>"

Then you'll need to make the script executable by the Apache2

# chown www-data:www-data /usr/lib/cgi-bin/printHeaders.cgi
# chmod ug+x /usr/lib/cgi-bin/printHeaders.cgi

Configuring the Apache VirtualHost#

You are almost done! You'll need to configure mod_auth_openidc to protect your server.

# vi /etc/apache2/sites-available/default-ssl.conf

Add the following right under <VirtualHost _default_:443>

OIDCProviderMetadataURL https://idp.mydomain.com/.well-known/openid-configuration
OIDCClientID (client-id-you-got-back-when-you-added-the-client)
OIDCClientSecret (your-client-secret)
OIDCRedirectURI https://www.mydomain.com/callback
OIDCResponseType code
OIDCScope "openid profile email"
OIDCSSLValidateServer Off
OIDCCryptoPassphrase (a-random-seed-value)
OIDCPassClaimsAs environment
OIDCClaimPrefix USERINFO_
OIDCPassIDTokenAs payload
<Location "/">
    Require valid-user
    AuthType openid-connect
</Location>

Then restart Apache to effect the changes

# service apache2 restart

The most confusing part here is the OIDCRedirectURI--don't set this to a path used by your server. The apache-filter uses the redirect_uri to process the response from the OpenID Provider (Gluu Server).

Now you're ready to test. Open your web browser, and point it at https://www.mydomain.com/cgi-bin/printHeaders.cgi

If you're not logged in already, you should be redirected to the authentication page. If you are logged in, you should just see an html page with the REMOTE_USER variable populated. Also check out the OIDC_id_token_payload and all the claims for USERINFO_

Protect a web server ressource using mod_auth_openidc on CentOS#

We assume that all the hostnames will be dns resolvable. If not, then add the according entries in /etc/hosts, please.

Add EPEL Repository#

Run the following command to Add EPEL Repo.

  • # rpm -ivh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

Apache Web Server#

To setup Apache2 SSL, run the following commands:

Note

If the hiredis package is not found by the yum command, please download it manually from this page and install it.

# yum install httpd mod_ssl
# yum install curl hiredis jansson

Configure SSL Module#

This section will guide you to create SSL certificates. Use the following commands to crete a directory and generate the certificates.

# mkdir /etc/httpd/ssl
# openssl req -new -x509 -sha256 -days 365 -nodes -out /etc/httpd/ssl/httpd.pem -keyout /etc/httpd/ssl/httpd.key

You will be prompted to enter some values such as company name, country etc. Please enter them and your certificate will be ready. A template is given below

    Country Name (2 letter code) [XX]:US
    State or Province Name (full name) []:TX
    Locality Name (eg, city) [Default City]:Austin
    Organization Name (eg, company) [Default Company Ltd]:Gluu
    Organizational Unit Name (eg, section) []:
    Common Name (eg, your name or your server's hostname) []:modauth-centos.info
    Email Address []:support@gluu.org

The next step is to configure Apache to use the certificates and use the following command to edit the ssl.conf file.

# vi /etc/httpd/conf.d/ssl.conf

The important part of the configuration is to enter the path to the created SSL certificates. The example is given below.
Note: Please make sure to use the correct server name in the configuration file.

    SSLCertificateFile /etc/httpd/ssl/httpd.pem
    SSLCertificateKeyFile /etc/httpd/ssl/httpd.key
    ServerAdmin support@gluu.org
    ServerName gluu.org

Restart Apache Server and you are done configuring the SSL Module. Use the command below to restart the Apache Server.

# service httpd restart

Note

The latest version of the apache OpenID Connect module is available from this page

The latest package for the apache module might have multiple dependencies which must be installed first.

Run the following command to install the mod_auth_openidc module:

rpm -ivhhttps://github.com/zmartzone/mod_auth_openidc/releases/download/v1.8.2/mod_auth_openidc-1.8.2-1.el6.x86_64.rpm

Note

If there are any difficulties installing hiredis and jansson,

try to update the package database of your system using the command below.

# yum upgrade

Load Authentication Module#

Please make sure that the following shared-object file exists by running the following command:

ls -l /usr/lib64/httpd/modules/mod_auth_openidc.so

Install CGI Script#

The test page is made using the cgi-script. Please use the following command to create the script.

# vi /var/www/cgi-bin/printHeaders.cgi

Please paste the following code to prepare the script

#!/usr/bin/python

import os

d = os.environ
k = d.keys()
k.sort()

print "Content-type: text/html\n\n"

print "<HTML><Head><TITLE>Print Env Variables</TITLE></Head><BODY>"
print "<h1>Environment Variables</H1>"
for item in k:
    print "<p><B>%s</B>: %s </p>" % (item, d[item])
    print "</BODY></HTML>"

The next step is to make the script executable by HTTPD

# chown apache:apache /var/www/cgi-bin/printHeaders.cgi
# chmod ug+x /var/www/cgi-bin/printHeaders.cgi

Client Registration#

There are two methods for client registration:

  1. Dynamic Client Registration
  2. Manual Client Registration

You can use any of the methods to register the client. For this example, let's create the client manually in the Gluu Server. Please use the following parameters to create the client:

Name: mod_auth_openidc
Client Secret: something-sufficiently-unguessable
Application Type: Web
Pre-Authorization: Enabled
login uri: https://www.mydomain.com/callback
Subject Type: Public
Scopes: openid, profile, email
Response Types: code
Grant Types: authorization_code

Note

The client_secret should be noted after creating the client in Gluu Server as it is used later.

Configure the Apache Virtualhost#

The apache module is confgured in the defautl ssl configuration file. Please use the command below to open the file

# vi /etc/httpd/conf.d/ssl.conf 

Please add the following at the bottom of the file

OIDCProviderMetadataURL https://idp.mydomain.com/.well-known/openid-configuration
OIDCClientID (client-id-you-got-back-when-you-added-the-client)
OIDCClientSecret (your-client-secret)
OIDCRedirectURI https://www.mydomain.com/callback
OIDCResponseType code
OIDCScope "openid profile email"
OIDCSSLValidateServer Off
OIDCCryptoPassphrase (a-random-seed-value)
OIDCPassClaimsAs environment
OIDCClaimPrefix USERINFO_
OIDCPassIDTokenAs payload
<Location "/">
    Require valid-user
    AuthType openid-connect
</Location>

Warning

Please remember to populate the OIDCRedirectURI with a value that is not used by the server. The apache-filter uses the redirect_uri to process the response from the OpenID Provider (Gluu Server).

Please restart the HTTPD server for the changes to take effect

# service httpd restart

Now you're ready to test. Open your web browser, and point it at https://www.mydomain.com/cgi-bin/printHeaders.cgi`

oxRay#

LifeRay OpenID Connect plugin to authenticate users using Gluu IdP.

Overview#

The oxAuth LifeRay plugin is used to authenticate and auto-log users from Gluu Server into LifeRay with the same credentials. It is built on top of oxAuth, the OpenID Connect provider by Gluu.

The oxAuth plugin intercepts any attempt to login from anywhere in the LifeRay and redirects the request and the user to an oxAuth server where the identification takes place, actually. If the user has authorized the server to share some of his basic information with the oxAuth plugin, the user will be redirected back to the LifeRay CMS, and logged in, automatically.

The goal of this project is to use the LifeRay CMS as the basis for an organizational personal data store service.

Note: This plugin does not support auto-user creation from information supplied by the oxAuth Plugin. Instead, it can be implemented by extending the plugin.

Deployment#

The plugin is provided in two variants--Maven and Ant. You can either use Maven or the LifeRay plugin SDK to build and deploy this plugin as a standard LifeRay hot deployable WAR file.

Deploying WAR file using Maven#

This requires a prerequisite: make sure that you have Maven installed on your system to build this plugin from source.

  1. Checkout the Maven source from the [oxRay Repository][https://github.com/GluuFederation/oxRay/tree/master/6.2.x/maven/gluu-openid-connect-hook].

  2. Open the file pom.xml in gluu-openid-connect-hook, and update your local LifeRay Tomcat bundle path. This is required for building the WAR file and deploying to the LifeRay Tomcat bundle.

configure_pom_xml

  1. Run the following command in the gluu/6.2.x/maven/gluu-openid-connect-hook directory:
mvn clean install package liferay:deploy

This will take a few seconds to download the dependency jar files, and generate the LifeRay-compiled deployable WAR file. It will be placed within your <liferay-bundle-folder>/deploy directory, and the hot deployable process will start.

Using LifeRay Plugin SDK With Ant#

This requires a prerequisite: we assume that you have the plugin SDK both installed and configured with LifeRay bundle.

  1. Checkout the gluu-openid-connect-hook plugin source from the repository, and place these files in your local directory for the plugin SDK. Usually, this is liferay-plugins-sdk-6.2.0-ce-ga1/hooks.

  2. Run the following command in the folder liferay-plugins-sdk-6.2.0-ce-ga1/hooks/gluu-openid-connect-hook:

ant clean deploy

Using Binary From Repository#

You can also download a compiled binary as a standard LifeRay deployable WAR file from the following location:

oxRay LifeRay Deployable War File

Copy this WAR file in your LifeRay bundle. Usually, this is located at liferay-portal-6.2.0-ce-ga1/deploy.

Once the plugin is deployed as a WAR file either using Maven or Ant, you will see the following success message in your LifeRay Tomcat server:

deploy_success

Client Registration#

A LifeRay application needs to be registered with the Authorization server before initiating an authentication request/response with OAuth IdP server.

The following steps are necessary to obtain both a client id and a client secret. These data will be used within the LifeRay portal properties.

  1. Go to the location https://seed.gluu.org/oxauth-rp/home.seam.
  2. You will see the Dynamic Client Registration Section.
  3. Enter the Registration Endpoint uri, for example https://idp.example.org/oxauth/seam/resource/restv1/oxauth/authorize.
    • You can derive this uri from your IdP auto-discovery uri which is like that: https://<Your IDP Server Domain>/.well-known/openid-configuration.
    • You can search for the registration endpoint, and copy that uri here.
  4. Enter the redirect uris as http://localhost:8080/openidconnect/callback:
    • Replace your domain name with localhost:8080
    • This will be your LifeRay handler for logging a user into LifeRay, automatically, when a redirect comes back from the OAuth server.
  5. Select the Response Types: CODE
  6. Select the Application Type: WEB
  7. For development purposes use: NATIVE (if you are testing on a local machine with localhost:8080 domain)
  8. Enter Client Name: LifeRay App (you can choose any name here).
  9. All other options can be left as they are--please see the attached screenshot:

client_registration

  1. Click Submit, and both the following Registration Request and Registration Response will be displayed:

json-request-response

  1. Save the Registration Response to your local system. The parameters client_id and client_secret are used in LifeRay when configuring portal-ext.properties.

Modifying portal.properties#

It is necessary to modify portal-ext.properties file to reflect oxAuth server client credentials and server's URL. It can be accomplished by navigating into the liferay-portal-6.2.0-ce-ga1 folder, where the file portal-ext.properties is stored.

Note: To either activate or deactivate the oxAuth plugin put the value true (to activate) or false (to deactivate), respectively.

gluu.openidconnect.auth.enabled=true
  • oxAuth client ID and client secret:
gluu.openidconnect.client.id=@!1111!0008!51CE.1E59
gluu.openidconnect.client.secret=65777eb7-87a8-4d60-9dbc-d31d43971f2b
  • OAuth server domain
gluu.openidconnect.idp.domain=https://idp.gluu.org`
  • OAuth server auto discovery uri
gluu.openidconnect.url.discovery=https://idp.gluu.org/.well-known/openid-configuration
  • Your OAuth server logout uri (typically, this will be used to logout a user from OAuth when a user logs out from LifeRay)
gluu.openidconnect.idp.logout=https://idp.gluu.org/identity/logout
  • LifeRay server callback uri that will be used as a handling response by the OAuth server after authentication:
  • replace the localhost:8080 with your LifeRay domain name:

gluu.openidconnect.client.redirect.url=http://localhost:8080/openidconnect/callback
This page will be invoked when the user does not exist in the LifeRay database, but gets authenticated from the OAuth Server.

  • Typically, create a LifeRay page with the name /no-such-user-found, or redirect to the LifeRay registration page uri like that:
gluu.openidconnect.no.such.user.redirect.url=http://localhost:8080/no-such-user-found

Restart the LifeRay server after editing the file portal-ext.properties.

Login Using the LifeRay Front End#

  • Server Bootup

    • Once the LifeRay server is restarted, open your browser and navigate to the uri http://localhost:8080.
  • Login uri

    • Once the LifeRay page successfully loaded navigate to the OpenID connect page at http://localhost:8080/openidconnect/login.

Note: you can edit the theme code, and link to the login uri as http://localhost:8080/openidconnect/login. In result the user will always redirect to the OAuth server for authentication.

  • OAuth authentication
    • The LifeRay login uri will redirect users to the OAuth IdP server for user authentication. Internally, passing the oAuth client id as the following screen:

oauth-login

  • Request for permission
    • This screen can be configured depending upon your OAuth Server implementation.

oauth_info_confirm

  • OAuth callback (user auto-login to LifeRay)
    • After a successful authentication with the OAuth server, IdP will send a callback to LifeRay with a specific code as a parameter:
http://localhost:8080/openidconnect/callback?code=xxx`

This will be intercepted by our oxAuth LifeRay plugin. Upon validation of the token with the Gluu IdP, it will result in a login of the user to the LifeRay. The user will be redirected to his respective start page.

liferay_success_login

Using OpenID Connect to authenticate a person in Java#

The OpenID Connect Protocol offers Java developers a way to authenticate a person at any Internet domain that supports the standard. To accomplish this, the domain must provide a way to register clients--the website and mobile applications that use the authentication API offered by the domain.

Discovery#

Discovery is the first step! Luckily, its super-easy! All you have to do is make a get request to https://{domain}/.well-known/openid-configuration.

This will return a JSON object, as described in the specification. For example, you can see Gluu's OpenID Connect discovery url.

This will tell you everything you need to know about this OpenID Connect provider, like what are the endpoints (URLs), what crypto is supported, and what user claims can you ask for.

An example of a Discovery Request, using the oxAuth RP library.

Client Registration#

In SAML, the website was called a "Service Provider." In OpenID Connect, the website (or mobile application) is called a "Client". Clients can be registered manually by the OP, but more frequently, clients use the Dynamic Registration API to automate the process.

Obtaining the id_token#

After your client is registered, it is time to get down to business. OpenID Connect offers two common workflows for authentication: basic (where the person is using a browser, and can be re-directed) and implicit where the client sends the credentials, including the secret. There is a useful implements guide for basic and implicit.

Logout#

OpenID Connect defines a mechanism for Session Management. The idea is that JavaScript in a web tab can detect that another tab has logged out. One detection of a logout event, the Web application can cleanup sessions in any backend systems as necessary. It is not 100% effective. If the tab is closed when the logout occurs in another tab, the event may not be detected, and the backend systems are advised to timeout sessions.

Using OpenID Connect from JavaScript#

See OpenID Connect plugin for Passport for further details.