SAML Single Sign-On Support

SSO Login Diagram

The following process explains how the user logs into a hosted FileCloud application through customer-operated SAML based SSO service.

1. The user attempts to reach the hosted FileCloud application through the URL.
2. FileCloud generates a SAML authentication request. The SAML request is embedded into the URL for the customer’s SSO Service.
3. FileCloud sends a redirect to the user’s browser. The redirect URL includes the SAML authentication request and is submitted to customer’s SSO Service.
4. The Customer’s SSO Service authenticates the user based on valid login credentials.
5. The customer generates a valid SAML response and returns the information to the user’s browser.
6. The customer SAML response is redirected to FileCloud.
7. The FileCloud authentication module verifies the SAML response.
8. If the user is successfully authenticated, the user will be successfully logged into FileCloud.

When the IdP successfully authenticates the user account, the FileCloud (SP) authentication module verifies that the user account exists in FileCloud.
If the user account does not exist in FileCloud, then a new user account is created and the user is logged into FileCloud.

Configuring the Apache server requires you to add the Alias directive to the simplesaml.php configuration file.

Pre-requisite: The mcrypt module must be installed on the FileCloud Server.

• In Windows, it should be installed by default.
• In Linux, if mcrypt is not installed, it must be installed

To add the Alias directive:

Use the following table to understand the typical entries in Linux and windows.

You can change these settings if the FileCloud is installed under a different WEB ROOT Folder.

Windows

1. Navigate to the following directory

   c:\xampp\apache\conf\extra

2. Open the following file for editing

   httpd-filecloud.conf 

3. Add the following line at the end of the file

   Alias /simplesaml "/xampp/htdocs/thirdparty/simplesaml/public"

    

4. Save the file.
5. Open the FileCloud Control Panel.
6. Use the control panel to stop and start the Webserver.

Linux

Ubuntu:

1. Open one of the the following files for editing:

   /etc/apache2/sites-enabled/000-default.conf for HTTP (for port 80)
   /etc/apache2/sites-enabled/default-ssl.conf for HTTPS (for port 443)

2. Add the following line within <VirtualHost *:80> for HTTP connection or <VirtualHost *.443> for HTTPS connection. You can place it under the line DocumentRoot /var/www/html.

   Alias /simplesaml /var/www/html/thirdparty/simplesaml/public 
   

3. To restart the apache webserver, run the following command:

   service apache2 restart OR systemctl restart apache2
   
   
   

RHEL:

1. Open one of the the following files for editing:
   /etc/httpd/conf/httpd.conf (for port 80)
   /etc/httpd/conf.d/ssl.conf (for port 443) 

2. Add the following line within <VirtualHost *:80> for HTTP connection or <VirtualHost *.443> for HTTPS connection. You can place it under the line DocumentRoot /var/www/html.

   Alias /simplesaml /var/www/html/thirdparty/simplesaml/public 

3. To restart the webserver, run the following command:
   service httpd restart OR systemctl restart httpd

1. In the FileCloud admin portal's left navigation bar, scroll down and click Settings. Then, on the Settings navigation page, click Server 

   

   .
   The Server settings page opens.
2. In the Server URL field, confirm that your URL begins with HTTPS.
3. Click Check URL to make sure your URL is valid.
   

   

To set the SSO type in FileCloud:

1. In the FileCloud admin portal's left navigation bar, scroll down and click Settings. Then, on the Settings navigation page, click SSO

   

   .
   The SSO page opens.
   

2. In Default SSO Type, select SAML.
   

   

   
   

Note:  If you are using Active Directory Federation Services (ADFS) Support for authentication, see ADFS Single Sign-On Support.

To configure IdP settings in FileCloud:

1. In the FileCloud admin portal SSO settings page, fill in the settings under SAML Settings.
   

Use the following table to understand the IdP settings.

 Use the following URL (Entity ID) to register FileCloud as an SP with IdP or ADFS.  The URL below also provides the metadata of the FileCloud SP:

http://<Your Domain>/simplesaml/module.php/saml/sp/metadata.php/default-sp

You can customize the user log-in screen to display the SSO log-in option along with the direct log-in option or to only display the SSO log-in.

To display the SSO log-in option along with the direct log-in option:

1. From the left navigation pane, click Customization. 

2. Select the General  tab, and then the Login sub-tab.

3. Check Show SSO Link and Show Login Options.
   

   

4. Save your changes.
   Now, when users access the user portal log-in page, they will see:
   

   

   
   
   On clicking the Single Sign-On link on the login page, the user is redirected to the SAML SSO Service web page. 

The SSO log-in option in the admin portal:

FileCloud admin interface also supports Single Sign-On. 

To only display the SSO log-in option:

In order to skip the FileCloud login page and send the user directly to the SAML SSO page you must add a setting to the cloudconfig.php file, as shown below. You can configure this option for the user portal login page and the admin portal login page.

To only display the SSO log-in option in the user portal:
This configuration option is available starting with FileCloud Version 19.3, It supports skipping the login page when the user accesses FileCloud with a domain name or with a full URL. 

1. In the admin portal, go to Customization, and select the General  tab, and then the Login sub-tab.

2. Check Show SSO Link and Show Login Options, and save your changes.
3. Open the configuration file:
   Windows: XAMPP DIRECTORY/htdocs/config/cloudconfig.php
   Linux: /var/www/config/cloudconfig.php

4. To only display the SSO log-in option:

   define("TONIDOCLOUD_SSO_DIRECT_ONLY", "1");

   When users enter the log-in page they will see:
   

   

To return to displaying other log-in options:

define("TONIDOCLOUD_SSO_DIRECT_ONLY", "0");

To display only SSO log-in in the admin portal:

Starting with Version 20.1, FileCloud supports skipping the login page when the admin accesses FileCloud with a domain name or with a full URL.

1. Open the configuration file:
   Windows: XAMPP DIRECTORY/htdocs/config/cloudconfig.php
   Linux: /var/www/config/cloudconfig.php

2. To only display the SSO log-in option:

Enter:

define ("TONIDOCLOUD_SSO_DIRECT_ONLY_ADMIN", "1");

An earlier version of this option is also effective in versions of FileCloud prior to 20.1, but this redirect is only effective if the user specifies a domain name rather than a full URL. Instead of the above setting, use:

define("TONIDOCLOUD_SSO_DIRECT_ADMIN", "1");

To enable secure cookies when using SimpleSAML to authenticate, proceed on the following.

1. Open the SimpleSAML configuration file:
   Windows: XAMPP DIRECTORY/htdocs/thirdparty\simplesaml\config\config.php
   Linux: /var/www/config/thirdparty/simplesaml/config/config.php
   
   

2. Change session.cookie.secure from FALSE to TRUE:

   'session.cookie.secure' => true,

3. (Optional) For better cookie security set the session.cookie.samesite attribute to Strict or Lax according to the environment's needs.
   If the FileCloud site is embedded in an external site, it may be necessary to leave this setting null or set it to None to enable cookie sharing with the external site.

   'session.cookie.samesite' => 'Strict',

Avoid Open Redirect

FileCloud may be vulnerable to an open redirect when SSO is implemented.

• An open redirect is an application vulnerability that takes a parameter and redirects the user to the supplied parameter value without any validation.

This can be avoided by configuring the following setting:

1. Navigate to the following directory:

   <FileCloud WEB ROOT>/thirdparty/simplesaml/config

2. Open the following file for editing:

   config.php

3. Add the following line:

   'trusted.url.domains' => array()

Restrict the Available Admin Login Resources

The FileCloud admin portal can possibly allow 2 administrative login interfaces:

• One at admin API interface: /admin
• One at simpleSAML admin resource: /simpleSAML.

This can be avoided by changing the log level to "PROD" in SSO settings under settings in FileCloud admin interface. This will disable the SSO admin page under simpleSAML.

The password to the SSO admin page under /simpleSAML can be changed under 'auth.adminpassword' key in <FileCloud WEB ROOT>/thirdparty/simplesaml/config/config.php

Issues that you may encounter and how to resolve them.

Issue

FileCloud is hosted behind a Proxy

Solution
When FileCloud is hosted behind a proxy server, SAML will not automatically work.

Go to <FileCloud WEB ROOT>/thirdparty/simplesaml/config/filecloudconfig.php

Add Proxy Server Information here.

Format is as follows user:password@yourproxyserverurl.com

define("TONIDOCLOUD_SAML_PROXY", "ADD PROXY INFO HERE");

Issue

System Timezone Settings

Solution

After setting SAML log level to DEV. Log file will be created under <FileCloud WEB ROOT>/thirdparty/simplesaml/log/simplesamlphp.log

SimpleSAML_Error_Exception: Error 2 - strftime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function.

Solution: date.timezone setting must be set explicitly in php.ini

Issue

FileCloud is hosted behing a reverse proxy

Solution

When FileCloud is hosted behind a proxy server, SAML will not automatically work.

Go to <FileCloud WEB ROOT>/thirdparty/simplesaml/config/config.php

set the base url to 'baseurlpath' => 'http(s)://YOURFILECLOUDOMAIN/simplesaml/'

Issue

Debug page login

Solution

https://YOURFILECLOUDDOMAIN/simplesaml/module.php/core/frontpage_welcome.php

Issue

FileCloud in HA (High Availability) environment with multiple servers

Solution

In this scenario, SimpleSAML will most likely not work with default configuration and will require to run Memcache to manage the session.

Go to <FileCloud WEB ROOT>/thirdparty/simplesaml/config/config.php

set the store.type => memcache

and set

'memcache_store.servers' => array(
array(
array('hostname' => 'localhost'),
),
),

where 'localhost' must be replaced with IP of memcache server as appropriate.

Issue

Autofill Username or Email on the IDP screen when configured:

TONIDOCLOUD_SAML_DOMAINS_ALLOWED

Solution

When autofill will only work when username or email address is sent through POST from the FileCloud login page to IDP. Therefore, ensure that the IDP metadata accepts requests through only POST. For example, if the Idp Metadata contains the following 2 similar lines, remove the Redirect and only have the POST

<md:SingleSignOnService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect" Location="https://mailinator-raja.okta.com/app/mailinatororg747392_myidp_1/exkgimvocj18Exx9g4x6/sso/saml"/>
<md:SingleSignOnService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="https://mailinator-raja.okta.com/app/mailinatororg747392_myidp_1/exkgimvocj18Exx9g4x6/sso/saml"/>