diff --git a/plugins/libkolab/lib/kolab_format.php b/plugins/libkolab/lib/kolab_format.php
index 7c343100..fefef1bc 100644
--- a/plugins/libkolab/lib/kolab_format.php
+++ b/plugins/libkolab/lib/kolab_format.php
@@ -1,576 +1,576 @@
 <?php
 
 /**
  * Kolab format model class wrapping libkolabxml bindings
  *
  * Abstract base class for different Kolab groupware objects read from/written
  * to the new Kolab 3 format using the PHP bindings of libkolabxml.
  *
  * @version @package_version@
  * @author Thomas Bruederli <bruederli@kolabsys.com>
  *
  * Copyright (C) 2012, Kolab Systems AG <contact@kolabsys.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU Affero General Public License for more details.
  *
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
 abstract class kolab_format
 {
     public static $timezone;
 
     public /*abstract*/ $CTYPE;
     public /*abstract*/ $CTYPEv2;
 
     protected /*abstract*/ $objclass;
     protected /*abstract*/ $read_func;
     protected /*abstract*/ $write_func;
 
     protected $obj;
     protected $data;
     protected $xmldata;
     protected $xmlobject;
     protected $formaterror;
     protected $loaded = false;
     protected $version = '3.0';
 
     const KTYPE_PREFIX = 'application/x-vnd.kolab.';
     const PRODUCT_ID   = 'Roundcube-libkolab-0.9';
 
     /**
      * Factory method to instantiate a kolab_format object of the given type and version
      *
      * @param string Object type to instantiate
      * @param float  Format version
      * @param string Cached xml data to initialize with
      * @return object kolab_format
      */
     public static function factory($type, $version = '3.0', $xmldata = null)
     {
         if (!isset(self::$timezone))
             self::$timezone = new DateTimeZone('UTC');
 
         if (!self::supports($version))
             return PEAR::raiseError("No support for Kolab format version " . $version);
 
         $type = preg_replace('/configuration\.[a-z.]+$/', 'configuration', $type);
         $suffix = preg_replace('/[^a-z]+/', '', $type);
         $classname = 'kolab_format_' . $suffix;
         if (class_exists($classname))
             return new $classname($xmldata, $version);
 
         return PEAR::raiseError("Failed to load Kolab Format wrapper for type " . $type);
     }
 
     /**
      * Determine support for the given format version
      *
      * @param float Format version to check
      * @return boolean True if supported, False otherwise
      */
     public static function supports($version)
     {
         if ($version == '2.0')
             return class_exists('kolabobject');
         // default is version 3
         return class_exists('kolabformat');
     }
 
     /**
      * Convert the given date/time value into a cDateTime object
      *
      * @param mixed         Date/Time value either as unix timestamp, date string or PHP DateTime object
      * @param DateTimeZone  The timezone the date/time is in. Use global default if Null, local time if False
      * @param boolean       True of the given date has no time component
      * @return object       The libkolabxml date/time object
      */
     public static function get_datetime($datetime, $tz = null, $dateonly = false)
     {
         // use timezone information from datetime of global setting
         if (!$tz && $tz !== false) {
             if ($datetime instanceof DateTime)
                 $tz = $datetime->getTimezone();
             if (!$tz)
                 $tz = self::$timezone;
         }
         $result = new cDateTime();
 
         try {
             // got a unix timestamp (in UTC)
             if (is_numeric($datetime)) {
                 $datetime = new DateTime('@'.$datetime, new DateTimeZone('UTC'));
                 if ($tz) $datetime->setTimezone($tz);
             }
             else if (is_string($datetime) && strlen($datetime)) {
                 $datetime = new DateTime($datetime, $tz ?: null);
             }
         }
         catch (Exception $e) {}
 
         if ($datetime instanceof DateTime) {
             $result->setDate($datetime->format('Y'), $datetime->format('n'), $datetime->format('j'));
 
             if (!$dateonly)
                 $result->setTime($datetime->format('G'), $datetime->format('i'), $datetime->format('s'));
 
             if ($tz && in_array($tz->getName(), array('UTC', 'GMT', '+00:00', 'Z')))
                 $result->setUTC(true);
             else if ($tz !== false)
                 $result->setTimezone($tz->getName());
         }
 
         return $result;
     }
 
     /**
      * Convert the given cDateTime into a PHP DateTime object
      *
      * @param object cDateTime  The libkolabxml datetime object
      * @return object DateTime  PHP datetime instance
      */
     public static function php_datetime($cdt)
     {
         if (!is_object($cdt) || !$cdt->isValid())
             return null;
 
         $d = new DateTime;
         $d->setTimezone(self::$timezone);
 
         try {
             if ($tzs = $cdt->timezone()) {
                 $tz = new DateTimeZone($tzs);
                 $d->setTimezone($tz);
             }
             else if ($cdt->isUTC()) {
                 $d->setTimezone(new DateTimeZone('UTC'));
             }
         }
         catch (Exception $e) { }
 
         $d->setDate($cdt->year(), $cdt->month(), $cdt->day());
 
         if ($cdt->isDateOnly()) {
             $d->_dateonly = true;
             $d->setTime(12, 0, 0);  // set time to noon to avoid timezone troubles
         }
         else {
             $d->setTime($cdt->hour(), $cdt->minute(), $cdt->second());
         }
 
         return $d;
     }
 
     /**
      * Convert a libkolabxml vector to a PHP array
      *
      * @param object vector Object
-     * @return array Indexed array contaning vector elements
+     * @return array Indexed array containing vector elements
      */
     public static function vector2array($vec, $max = PHP_INT_MAX)
     {
         $arr = array();
         for ($i=0; $i < $vec->size() && $i < $max; $i++)
             $arr[] = $vec->get($i);
         return $arr;
     }
 
     /**
      * Build a libkolabxml vector (string) from a PHP array
      *
      * @param array Array with vector elements
      * @return object vectors
      */
     public static function array2vector($arr)
     {
         $vec = new vectors;
         foreach ((array)$arr as $val) {
             if (strlen($val))
                 $vec->push($val);
         }
         return $vec;
     }
 
     /**
      * Parse the X-Kolab-Type header from MIME messages and return the object type in short form
      *
      * @param string X-Kolab-Type header value
      * @return string Kolab object type (contact,event,task,note,etc.)
      */
     public static function mime2object_type($x_kolab_type)
     {
         return preg_replace(
             array('/dictionary.[a-z.]+$/', '/contact.distlist$/'),
             array( 'dictionary',            'distribution-list'),
             substr($x_kolab_type, strlen(self::KTYPE_PREFIX))
         );
     }
 
 
     /**
      * Default constructor of all kolab_format_* objects
      */
     public function __construct($xmldata = null, $version = null)
     {
         $this->obj = new $this->objclass;
         $this->xmldata = $xmldata;
 
         if ($version)
             $this->version = $version;
 
         // use libkolab module if available
         if (class_exists('kolabobject'))
             $this->xmlobject = new XMLObject();
     }
 
     /**
      * Check for format errors after calling kolabformat::write*()
      *
      * @return boolean True if there were errors, False if OK
      */
     protected function format_errors()
     {
         $ret = $log = false;
         switch (kolabformat::error()) {
             case kolabformat::NoError:
                 $ret = false;
                 break;
             case kolabformat::Warning:
                 $ret = false;
                 $uid = is_object($this->obj) ? $this->obj->uid() : $this->data['uid'];
                 $log = "Warning @ $uid";
                 break;
             default:
                 $ret = true;
                 $log = "Error";
         }
 
         if ($log && !isset($this->formaterror)) {
             rcube::raise_error(array(
                 'code' => 660,
                 'type' => 'php',
                 'file' => __FILE__,
                 'line' => __LINE__,
                 'message' => "kolabformat $log: " . kolabformat::errorMessage(),
             ), true);
 
             $this->formaterror = $ret;
         }
 
         return $ret;
     }
 
     /**
      * Save the last generated UID to the object properties.
      * Should be called after kolabformat::writeXXXX();
      */
     protected function update_uid()
     {
         // get generated UID
         if (!$this->data['uid']) {
             if ($this->xmlobject) {
                 $this->data['uid'] = $this->xmlobject->getSerializedUID();
             }
             if (empty($this->data['uid'])) {
                 $this->data['uid'] = kolabformat::getSerializedUID();
             }
             $this->obj->setUid($this->data['uid']);
         }
     }
 
     /**
      * Initialize libkolabxml object with cached xml data
      */
     protected function init()
     {
         if (!$this->loaded) {
             if ($this->xmldata) {
                 $this->load($this->xmldata);
                 $this->xmldata = null;
             }
             $this->loaded = true;
         }
     }
 
     /**
      * Get constant value for libkolab's version parameter
      *
      * @param float Version value to convert
      * @return int Constant value of either kolabobject::KolabV2 or kolabobject::KolabV3 or false if kolabobject module isn't available
      */
     protected function libversion($v = null)
     {
         if (class_exists('kolabobject')) {
             $version = $v ?: $this->version;
             if ($version <= '2.0')
                 return kolabobject::KolabV2;
             else
                 return kolabobject::KolabV3;
         }
 
         return false;
     }
 
     /**
      * Determine the correct libkolab(xml) wrapper function for the given call
      * depending on the available PHP modules
      */
     protected function libfunc($func)
     {
         if (is_array($func) || strpos($func, '::'))
             return $func;
         else if (class_exists('kolabobject'))
             return array($this->xmlobject, $func);
         else
             return 'kolabformat::' . $func;
     }
 
     /**
      * Direct getter for object properties
      */
     public function __get($var)
     {
         return $this->data[$var];
     }
 
     /**
      * Load Kolab object data from the given XML block
      *
      * @param string XML data
      * @return boolean True on success, False on failure
      */
     public function load($xml)
     {
         $this->formaterror = null;
         $read_func = $this->libfunc($this->read_func);
 
         if (is_array($read_func))
             $r = call_user_func($read_func, $xml, $this->libversion());
         else
             $r = call_user_func($read_func, $xml, false);
 
         if (is_resource($r))
             $this->obj = new $this->objclass($r);
         else if (is_a($r, $this->objclass))
             $this->obj = $r;
 
         $this->loaded = !$this->format_errors();
     }
 
     /**
      * Write object data to XML format
      *
      * @param float Format version to write
      * @return string XML data
      */
     public function write($version = null)
     {
         $this->formaterror = null;
 
         $this->init();
         $write_func = $this->libfunc($this->write_func);
         if (is_array($write_func))
             $this->xmldata = call_user_func($write_func, $this->obj, $this->libversion($version), self::PRODUCT_ID);
         else
             $this->xmldata = call_user_func($write_func, $this->obj, self::PRODUCT_ID);
 
         if (!$this->format_errors())
             $this->update_uid();
         else
             $this->xmldata = null;
 
         return $this->xmldata;
     }
 
     /**
      * Set properties to the kolabformat object
      *
      * @param array  Object data as hash array
      */
     public function set(&$object)
     {
         $this->init();
 
         if (!empty($object['uid']))
             $this->obj->setUid($object['uid']);
 
         // set some automatic values if missing
         if (empty($object['created']) && method_exists($this->obj, 'setCreated')) {
             $cdt = $this->obj->created();
             $object['created'] = $cdt && $cdt->isValid() ? self::php_datetime($cdt) : new DateTime('now', new DateTimeZone('UTC'));
             if (!$cdt || !$cdt->isValid())
                 $this->obj->setCreated(self::get_datetime($object['created']));
         }
 
         $object['changed'] = new DateTime('now', new DateTimeZone('UTC'));
         $this->obj->setLastModified(self::get_datetime($object['changed']));
 
         // Save custom properties of the given object
         if (isset($object['x-custom'])) {
             $vcustom = new vectorcs;
             foreach ((array)$object['x-custom'] as $cp) {
                 if (is_array($cp))
                     $vcustom->push(new CustomProperty($cp[0], $cp[1]));
             }
             $this->obj->setCustomProperties($vcustom);
         }
         else {  // load custom properties from XML for caching (#2238)
             $object['x-custom'] = array();
             $vcustom = $this->obj->customProperties();
             for ($i=0; $i < $vcustom->size(); $i++) {
                 $cp = $vcustom->get($i);
                 $object['x-custom'][] = array($cp->identifier, $cp->value);
             }
         }
     }
 
     /**
      * Convert the Kolab object into a hash array data structure
      *
      * @param array Additional data for merge
      *
      * @return array  Kolab object data as hash array
      */
     public function to_array($data = array())
     {
         $this->init();
 
         // read object properties into local data object
         $object = array(
             'uid'     => $this->obj->uid(),
             'changed' => self::php_datetime($this->obj->lastModified()),
         );
 
         // not all container support the created property
         if (method_exists($this->obj, 'created')) {
             $object['created'] = self::php_datetime($this->obj->created());
         }
 
         // read custom properties
         $vcustom = $this->obj->customProperties();
         for ($i=0; $i < $vcustom->size(); $i++) {
             $cp = $vcustom->get($i);
             $object['x-custom'][] = array($cp->identifier, $cp->value);
         }
 
         // merge with additional data, e.g. attachments from the message
         if ($data) {
             foreach ($data as $idx => $value) {
                 if (is_array($value)) {
                     $object[$idx] = array_merge((array)$object[$idx], $value);
                 }
                 else {
                     $object[$idx] = $value;
                 }
             }
         }
 
         return $object;
     }
 
     /**
      * Object validation method to be implemented by derived classes
      */
     abstract public function is_valid();
 
     /**
      * Callback for kolab_storage_cache to get object specific tags to cache
      *
      * @return array List of tags to save in cache
      */
     public function get_tags()
     {
         return array();
     }
 
     /**
      * Callback for kolab_storage_cache to get words to index for fulltext search
      *
      * @return array List of words to save in cache
      */
     public function get_words()
     {
         return array();
     }
 
     /**
      * Utility function to extract object attachment data
      *
      * @param array Hash array reference to append attachment data into
      */
     protected function get_attachments(&$object)
     {
         // handle attachments
         $vattach = $this->obj->attachments();
         for ($i=0; $i < $vattach->size(); $i++) {
             $attach = $vattach->get($i);
 
             // skip cid: attachments which are mime message parts handled by kolab_storage_folder
             if (substr($attach->uri(), 0, 4) != 'cid:' && $attach->label()) {
                 $name    = $attach->label();
                 $content = $attach->data();
                 $object['_attachments'][$name] = array(
                     'name'     => $name,
                     'mimetype' => $attach->mimetype(),
                     'size'     => strlen($content),
                     'content'  => $content,
                 );
             }
             else if (in_array(substr($attach->uri(), 0, 4), array('http','imap'))) {
                 $object['links'][] = $attach->uri();
             }
         }
     }
 
     /**
      * Utility function to set attachment properties to the kolabformat object
      *
      * @param array  Object data as hash array
      * @param boolean True to always overwrite attachment information
      */
     protected function set_attachments($object, $write = true)
     {
         // save attachments
         $vattach = new vectorattachment;
         foreach ((array) $object['_attachments'] as $cid => $attr) {
             if (empty($attr))
                 continue;
             $attach = new Attachment;
             $attach->setLabel((string)$attr['name']);
             $attach->setUri('cid:' . $cid, $attr['mimetype'] ?: 'application/octet-stream');
             if ($attach->isValid()) {
                 $vattach->push($attach);
                 $write = true;
             }
             else {
                 rcube::raise_error(array(
                     'code' => 660,
                     'type' => 'php',
                     'file' => __FILE__,
                     'line' => __LINE__,
                     'message' => "Invalid attributes for attachment $cid: " . var_export($attr, true),
                 ), true);
             }
         }
 
         foreach ((array) $object['links'] as $link) {
             $attach = new Attachment;
             $attach->setUri($link, 'unknown');
             $vattach->push($attach);
             $write = true;
         }
 
         if ($write) {
             $this->obj->setAttachments($vattach);
         }
     }
 }
diff --git a/plugins/libkolab/lib/kolab_format_configuration.php b/plugins/libkolab/lib/kolab_format_configuration.php
index 5a8d3fff..44b7e925 100644
--- a/plugins/libkolab/lib/kolab_format_configuration.php
+++ b/plugins/libkolab/lib/kolab_format_configuration.php
@@ -1,139 +1,217 @@
 <?php
 
 /**
  * Kolab Configuration data model class
  *
  * @version @package_version@
  * @author Thomas Bruederli <bruederli@kolabsys.com>
  *
  * Copyright (C) 2012, Kolab Systems AG <contact@kolabsys.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU Affero General Public License for more details.
  *
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
 class kolab_format_configuration extends kolab_format
 {
-    public $CTYPE = 'application/x-vnd.kolab.configuration';
+    public $CTYPE   = 'application/x-vnd.kolab.configuration';
     public $CTYPEv2 = 'application/x-vnd.kolab.configuration';
 
-    protected $objclass = 'Configuration';
-    protected $read_func = 'readConfiguration';
+    protected $objclass   = 'Configuration';
+    protected $read_func  = 'readConfiguration';
     protected $write_func = 'writeConfiguration';
 
     private $type_map = array(
+        'category'   => Configuration::TypeCategoryColor,
         'dictionary' => Configuration::TypeDictionary,
-        'category' => Configuration::TypeCategoryColor,
+        'relation'   => Configuration::TypeRelation,
+        'snippet'    => Configuration::TypeSnippet,
     );
 
 
     /**
      * Set properties to the kolabformat object
      *
      * @param array  Object data as hash array
      */
     public function set(&$object)
     {
         // set common object properties
         parent::set($object);
 
         // read type-specific properties
         switch ($object['type']) {
         case 'dictionary':
             $dict = new Dictionary($object['language']);
             $dict->setEntries(self::array2vector($object['e']));
             $this->obj = new Configuration($dict);
             break;
 
         case 'category':
             // TODO: implement this
             $categories = new vectorcategorycolor;
             $this->obj = new Configuration($categories);
             break;
+
+        case 'relation':
+            $relation = new Relation($object['name'], $object['category']);
+
+            if ($object['color']) {
+                $relation->setColor($object['color']);
+            }
+            if ($object['parent']) {
+                $relation->setParent($object['parent']);
+            }
+            if ($object['iconName']) {
+                $relation->setIconName($object['iconName']);
+            }
+            if ($object['priority'] > 0) {
+                $relation->setPriority((int) $object['priority']);
+            }
+            if (!empty($object['members'])) {
+                $relation->setMembers(self::array2vector($object['members']));
+            }
+
+            $this->obj = new Configuration($relation);
+            break;
+
+        case 'snippet':
+            $collection = new SnippetCollection($object['name']);
+            $snippets   = new vectorsnippets;
+
+            foreach ((array) $object['snippets'] as $item) {
+                $snippet = new snippet($item['name'], $item['text']);
+                $snippet->setTextType(strtolower($item['type']) == 'html' ? Snippet::HTML : Snippet::Plain);
+                if ($item['shortcut']) {
+                    $snippet->setShortCut($item['shortcut']);
+                }
+
+                $snippets->push($snippet);
+            }
+
+            $collection->setSnippets($snippets);
+
+            $this->obj = new Configuration($collection);
+            break;
+
         default:
             return false;
         }
 
         // adjust content-type string
         $this->CTYPE = $this->CTYPEv2 = 'application/x-vnd.kolab.configuration.' . $object['type'];
 
         // cache this data
         $this->data = $object;
         unset($this->data['_formatobj']);
     }
 
     /**
      *
      */
     public function is_valid()
     {
         return $this->data || (is_object($this->obj) && $this->obj->isValid());
     }
 
     /**
      * Convert the Configuration object into a hash array data structure
      *
      * @param array Additional data for merge
      *
      * @return array  Config object data as hash array
      */
     public function to_array($data = array())
     {
         // return cached result
-        if (!empty($this->data))
+        if (!empty($this->data)) {
             return $this->data;
+        }
 
         // read common object props into local data object
         $object = parent::to_array($data);
 
         $type_map = array_flip($this->type_map);
 
         $object['type'] = $type_map[$this->obj->type()];
 
         // read type-specific properties
         switch ($object['type']) {
         case 'dictionary':
             $dict = $this->obj->dictionary();
             $object['language'] = $dict->language();
             $object['e'] = self::vector2array($dict->entries());
             break;
 
         case 'category':
             // TODO: implement this
             break;
+
+        case 'relation':
+            $relation = $this->obj->relation();
+
+            $object['name']     = $relation->name();
+            $object['category'] = $relation->type();
+            $object['color']    = $relation->color();
+            $object['parent']   = $relation->parent();
+            $object['iconName'] = $relation->iconName();
+            $object['priority'] = $relation->priority();
+            $object['members']  = self::vector2array($relation->members());
+
+            break;
+
+        case 'snippet':
+            $collection = $this->obj->snippets();
+
+            $object['name']     = $collection->name();
+            $object['snippets'] = array();
+
+            $snippets = $collection->snippets();
+            for ($i=0; $i < $snippets->size(); $i++) {
+                $snippet = $snippets->get($i);
+                $object['snippets'][] = array(
+                    'name'     => $snippet->name(),
+                    'text'     => $snippet->text(),
+                    'type'     => $snippet->textType() == Snippet::HTML ? 'html' : 'plain',
+                    'shortcut' => $snippet->shortCut(),
+                );
+            }
+
+            break;
         }
 
         // adjust content-type string
-        if ($object['type'])
+        if ($object['type']) {
             $this->CTYPE = $this->CTYPEv2 = 'application/x-vnd.kolab.configuration.' . $object['type'];
+        }
 
         $this->data = $object;
         return $this->data;
     }
 
     /**
      * Callback for kolab_storage_cache to get object specific tags to cache
      *
      * @return array List of tags to save in cache
      */
     public function get_tags()
     {
         $tags = array();
 
-        if ($this->data['type'] == 'dictionary')
+        if ($this->data['type'] == 'dictionary') {
             $tags = array($this->data['language']);
+        }
 
         return $tags;
     }
-
 }