Horde Groupware Webmail Edition

I believe the customization required actually involves making changes yourself based on our documentation:
Customizing Horde Groupware Webmail Edition

We also discuss the changes for Horde Groupware Webmail Edition here:
cPanel & WHM 11.28 Release Notes - Horde Groupware Webmail Edition

This indicates the change is basically sharing capabilities not the interface. Again, you can customize the interface using the previous documentation, though.

 

Viewing HTML messages in Horde Groupware Webmail Edition

Please keep in mind that it's the latest version of Horde available. If there is a specific feature desired or symptom being experienced I recommend searching the official Horde web site to determine if a resolution is available: The Horde Project and Horde Groupware Webmail Edition

I verified that in Horde it is possible to view an e-mail in HTML format, both inline or via a link to click. For the method where a link can be clicked to view HTML, please check the following preference that may be set after logging-into Webmail: Horde >> Mail >> Options >> Message Options >> Message Viewing >> Where do you want to display links to alternative formats of a message?

To display HTML messages in-line, it may require a configuration adjustment to Horde, as noted by the Horde IMP "INSTALL" documentation, (located at "/usr/local/cpanel/base/horde/imp/docs/INSTALL"): * By default, IMP is configured to NOT display text/html message parts inline. This is done for various security reasons. If you would like to see text/html parts inline, you must make this change in ``imp/config/mime_drivers.php``::

Code:

$mime_drivers['imp']['html']['inline'] = true;

Reference: IMP Documentation - Installing IMP - Configuring IMP - IMP Configuration Pointers

When searching the Horde web site I found the following Wiki entry that offers additional clarification and more verbose information: Wiki :: FAQ/Admin/Config - Horde Administrator's FAQ - IMP configuration - Can IMP show attachments or HTML inline?

Here is the location to both files mentioned in the Horde documentation:

Code:

/usr/local/cpanel/base/horde/config/mime_drivers.php
/usr/local/cpanel/base/horde/imp/config/mime_drivers.php

Here is what the aforementioned entries look like in a stock-default configuration:

• /usr/local/cpanel/base/horde/config/mime_drivers.php
  
  Code:

  /**
   * HTML text driver settings
   */
  $mime_drivers['horde']['html'] = array(
      // NOTE: Inline HTML viewing is DISABLED by default.
      'inline' => false,
      'handles' => array(
          'text/html'
      ),
      'icons' => array(
          'default' => 'html.png'
      ),
      // Check for phishing exploits?
      'phishing_check' => true
  );

• /usr/local/cpanel/base/horde/imp/config/mime_drivers.php
  
  Code:

  /**
   * HTML driver settings
   */
  $mime_drivers['imp']['html'] = array(
      'inline' => false,
      'handles' => array(
          'text/html'
      ),
      'icons' => array(
          'default' => 'html.png'
      ),
      /* If you don't want to display the link to open the HTML content in a
       * separate window, set the following to false. */
      'external' => true,
      /* Run 'tidy' on all HTML output? This requires at least version 2.0 of the
       * PECL 'tidy' extension to be installed on your system. */
      'tidy' => false,
      /* Check for phishing exploits? */
      'phishing_check' => true
  );

 

Switching to a different UI theme in Horde Groupware Webmail Edition

If a new appearance for Horde is desired, I would consider switching to a different theme, such as "silver" instead of "bluewhite" -- this can be adjusted server-wide via the following configuration file:

Code:

/usr/local/cpanel/base/horde/config/prefs.php

Here is the applicable stock-default entry that may be modified to switch to a different theme:

Code:

// UI theme
$_prefs['theme'] = array(
    'value' => 'bluewhite',
    'locked' => false,
    'shared' => true,
    'type' => 'select',
    'desc' => _("Select your color scheme.")
);

I set Horde to use the "silver" theme, which is included by default; the updated configuration entry is shown below:

Code:

// UI theme
$_prefs['theme'] = array(
    'value' => 'silver',
    'locked' => false,
    'shared' => true,
    'type' => 'select',
    'desc' => _("Select your color scheme.")
);

 

We provide documentation on this here: Customizing Horde Groupware Webmail Edition

A simple example where we want to retain cookie handling:

1. Create the following directory structure:
mkdir -p /root/horde/config

2. Copy /usr/local/cpanel/base/horde/config/conf.php.in to the /root/horde/config directory you made in step 1

3. Edit /root/horde/config/conf.php.in to change $conf['session']['use_only_cookies'] from true to false.

4. Create a tarball of the directory structure made in step 1, name the tarball overlay.tar.gz

Code:

cd /root
tar czvf overlay.tar.gz horde

5. Copy overlay.tar.gz to /var/cpanel/horde on your cPanel server

6. Execute /usr/local/cpanel/bin/update-horde You should see output like the following:

Code:

$ ./bin/update-horde 
Updating Horde 1.2.8.cp4
tar -x -p -z --no-same-owner -f /usr/local/cpanel/src/3rdparty/gpl/horde-webmail-1.2.8.tar.gz
patching file config/conf.php.in
patching file dimp/config/conf.php
patching file imp/config/conf.php
patching file imp/config/servers.php.in
patching file imp/lib/Compose.php
patching file imp/lib/IMAP.php
patching file imp/templates/login/login.html
patching file imp/test.php
patching file ingo/config/conf.php
patching file ingo/test.php
patching file kronolith/config/conf.php
patching file kronolith/test.php
patching file lib/Horde/Kolab/IMAP/test.php
patching file lib/Horde/Kolab/Server/test.php
patching file lib/Horde/Prefs.php
patching file lib/Horde/Registry.php
patching file mnemo/config/conf.php
patching file scripts/sql/groupware.mysql.sql
patching file templates/login/login.inc
patching file test.php
patching file turba/config/conf.php
patching file turba/test.php
Using Horde overlay (using local version)tar -x -p -f /var/cpanel/horde/overlay.tar.gz -C /usr/local/cpanel/base
...

7. Your cookie setting should now be preserved

 

The names are the same, but the paths are different. Merging your request with my example, in step 1 you would do:

Code:

# mkdir -p /root/horde/config
# mkdir -p /root/horde/imp/config

Then you would copy/create the files in the appropriate directory within /root/horde/

With the overlay approach, you need to mirror as much of the /usr/local/cpanel/base/horde directory structure as necessary in your working overlay directory (/root/horde in my example) to retain your desired configuration.

 

You're welcome.