From abc3aa8a0eb0dec01783627296092a2eb600382f Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Mon, 19 Sep 2011 09:35:20 -0400
Subject: [PATCH] - Set group_bind_dn outside of list_groups()

---
 program/include/rcube_ldap.php |  666 +++++++++++++++++++++++++++++++++++++++---------------
 1 files changed, 475 insertions(+), 191 deletions(-)

diff --git a/program/include/rcube_ldap.php b/program/include/rcube_ldap.php
index d9f5a10..870f3e9 100644
--- a/program/include/rcube_ldap.php
+++ b/program/include/rcube_ldap.php
@@ -5,6 +5,7 @@
  |                                                                       |
  | This file is part of the Roundcube Webmail client                     |
  | Copyright (C) 2006-2011, The Roundcube Dev Team                       |
+ | Copyright (C) 2011, Kolab Systems AG                                  |
  | Licensed under the GNU GPL                                            |
  |                                                                       |
  | PURPOSE:                                                              |
@@ -13,6 +14,7 @@
  +-----------------------------------------------------------------------+
  | Author: Thomas Bruederli <roundcube@gmail.com>                        |
  |         Andreas Dick <andudi (at) gmx (dot) ch>                       |
+ |         Aleksander Machniak <machniak@kolabsys.com>                   |
  +-----------------------------------------------------------------------+
 
  $Id$
@@ -53,6 +55,9 @@
     private $groups_base_dn = '';
     private $group_cache = array();
     private $group_members = array();
+
+    private $vlv_active = false;
+    private $vlv_count = 0;
 
 
     /**
@@ -110,7 +115,7 @@
         foreach ($this->prop['required_fields'] as $key => $val)
             $this->prop['required_fields'][$key] = $this->_attr_name(strtolower($val));
 
-        $this->sort_col = $p['sort'];
+        $this->sort_col = is_array($p['sort']) ? $p['sort'][0] : $p['sort'];
         $this->debug = $debug;
         $this->mail_domain = $mail_domain;
 
@@ -168,7 +173,10 @@
             $bind_pass = $this->prop['bind_pass'];
             $bind_user = $this->prop['bind_user'];
             $bind_dn   = $this->prop['bind_dn'];
-            $this->base_dn   = $this->prop['base_dn'];
+
+            $this->base_dn        = $this->prop['base_dn'];
+            $this->groups_base_dn = ($this->prop['groups']['base_dn']) ?
+                $this->prop['groups']['base_dn'] : $this->base_dn;
 
             // User specific access, generate the proper values to use.
             if ($this->prop['user_specific']) {
@@ -178,8 +186,11 @@
                 }
 
                 // Get the pieces needed for variable replacement.
-                $fu = $RCMAIL->user->get_username();
-                list($u, $d) = explode('@', $fu);
+                if ($fu = $RCMAIL->user->get_username())
+                  list($u, $d) = explode('@', $fu);
+                else
+                  $d = $this->mail_domain;
+
                 $dc = 'dc='.strtr($d, array('.' => ',dc=')); // hierarchal domain string
 
                 $replaces = array('%dc' => $dc, '%d' => $d, '%fu' => $fu, '%u' => $u);
@@ -191,7 +202,7 @@
 
                     $this->_debug("S: searching with base {$this->prop['search_base_dn']} for {$this->prop['search_filter']}");
 
-                    $res = ldap_search($this->conn, $this->prop['search_base_dn'], $this->prop['search_filter'], array('uid'));
+                    $res = @ldap_search($this->conn, $this->prop['search_base_dn'], $this->prop['search_filter'], array('uid'));
                     if ($res && ($entry = ldap_first_entry($this->conn, $res))) {
                         $bind_dn = ldap_get_dn($this->conn, $entry);
 
@@ -204,8 +215,9 @@
                     }
                 }
                 // Replace the bind_dn and base_dn variables.
-                $bind_dn   = strtr($bind_dn, $replaces);
-                $this->base_dn   = strtr($this->base_dn, $replaces);
+                $bind_dn              = strtr($bind_dn, $replaces);
+                $this->base_dn        = strtr($this->base_dn, $replaces);
+                $this->groups_base_dn = strtr($this->groups_base_dn, $replaces);
 
                 if (empty($bind_user)) {
                     $bind_user = $u;
@@ -214,13 +226,13 @@
 
             if (!empty($bind_pass)) {
                 if (!empty($bind_dn)) {
-                    $this->ready = $this->_bind($bind_dn, $bind_pass);
+                    $this->ready = $this->bind($bind_dn, $bind_pass);
                 }
                 else if (!empty($this->prop['auth_cid'])) {
-                    $this->ready = $this->_sasl_bind($this->prop['auth_cid'], $bind_pass, $bind_user);
+                    $this->ready = $this->sasl_bind($this->prop['auth_cid'], $bind_pass, $bind_user);
                 }
                 else {
-                    $this->ready = $this->_sasl_bind($bind_user, $bind_pass);
+                    $this->ready = $this->sasl_bind($bind_user, $bind_pass);
                 }
             }
         }
@@ -245,7 +257,7 @@
      *
      * @return boolean True on success, False on error
      */
-    private function _sasl_bind($authc, $pass, $authz=null)
+    public function sasl_bind($authc, $pass, $authz=null)
     {
         if (!$this->conn) {
             return false;
@@ -289,13 +301,14 @@
 
 
     /**
-    * Bind connection with DN and password
-    *
-    * @param string Bind DN
-    * @param string Bind password
-    * @return boolean True on success, False on error
-    */
-    private function _bind($dn, $pass)
+     * Bind connection with DN and password
+     *
+     * @param string Bind DN
+     * @param string Bind password
+     *
+     * @return boolean True on success, False on error
+     */
+    public function bind($dn, $pass)
     {
         if (!$this->conn) {
             return false;
@@ -321,8 +334,8 @@
 
 
     /**
-    * Close connection to LDAP server
-    */
+     * Close connection to LDAP server
+     */
     function close()
     {
         if ($this->conn)
@@ -335,11 +348,21 @@
 
 
     /**
-    * Set internal list page
-    *
-    * @param  number  Page number to list
-    * @access public
-    */
+     * Returns address book name
+     *
+     * @return string Address book name
+     */
+    function get_name()
+    {
+        return $this->prop['name'];
+    }
+
+
+    /**
+     * Set internal list page
+     *
+     * @param number $page Page number to list
+     */
     function set_page($page)
     {
         $this->list_page = (int)$page;
@@ -347,11 +370,10 @@
 
 
     /**
-    * Set internal page size
-    *
-    * @param  number  Number of messages to display on one page
-    * @access public
-    */
+     * Set internal page size
+     *
+     * @param number $size Number of messages to display on one page
+     */
     function set_pagesize($size)
     {
         $this->page_size = (int)$size;
@@ -359,10 +381,10 @@
 
 
     /**
-    * Save a search string for future listings
-    *
-    * @param string Filter string
-    */
+     * Save a search string for future listings
+     *
+     * @param string $filter Filter string
+     */
     function set_search_set($filter)
     {
         $this->filter = $filter;
@@ -370,10 +392,10 @@
 
 
     /**
-    * Getter for saved search properties
-    *
-    * @return mixed Search properties used by this class
-    */
+     * Getter for saved search properties
+     *
+     * @return mixed Search properties used by this class
+     */
     function get_search_set()
     {
         return $this->filter;
@@ -381,8 +403,8 @@
 
 
     /**
-    * Reset all saved results and search parameters
-    */
+     * Reset all saved results and search parameters
+     */
     function reset()
     {
         $this->result = null;
@@ -392,12 +414,13 @@
 
 
     /**
-    * List the current set of contact records
-    *
-    * @param  array  List of cols to show
-    * @param  int    Only return this number of records
-    * @return array  Indexed list of contact records, each a hash array
-    */
+     * List the current set of contact records
+     *
+     * @param  array  List of cols to show
+     * @param  int    Only return this number of records
+     *
+     * @return array  Indexed list of contact records, each a hash array
+     */
     function list_records($cols=null, $subset=0)
     {
         // add general filter to query
@@ -417,54 +440,63 @@
         // we have a search result resource
         if ($this->ldap_result && $this->result->count > 0)
         {
-            if ($this->sort_col && $this->prop['scope'] !== 'base')
+            // sorting still on the ldap server
+            if ($this->sort_col && $this->prop['scope'] !== 'base' && !$this->vlv_active)
                 ldap_sort($this->conn, $this->ldap_result, $this->sort_col);
 
-            $start_row = $subset < 0 ? $this->result->first + $this->page_size + $subset : $this->result->first;
+            // start and end of the page
+            $start_row = $this->vlv_active ? 0 : $this->result->first;
+            $start_row = $subset < 0 ? $start_row + $this->page_size + $subset : $start_row;
             $last_row = $this->result->first + $this->page_size;
             $last_row = $subset != 0 ? $start_row + abs($subset) : $last_row;
 
+            // get all entries from the ldap server
             $entries = ldap_get_entries($this->conn, $this->ldap_result);
+
+            // filtering for group members
+            if ($this->groups and $this->group_id)
+            {
+                $count = 0;
+                $members = array();
+                foreach ($entries as $entry)
+                {
+                    if ($this->group_members[self::dn_encode($entry['dn'])])
+                    {
+                        $members[] = $entry;
+                        $count++;
+                    }
+                }
+                $entries = $members;
+                $entries['count'] = $count;
+                $this->result->count = $count;
+            }
+
+            // filter entries for this page
             for ($i = $start_row; $i < min($entries['count'], $last_row); $i++)
                 $this->result->add($this->_ldap2result($entries[$i]));
         }
-
-        // temp hack for filtering group members
-        if ($this->groups and $this->group_id)
-        {
-            $result = new rcube_result_set();
-            while ($record = $this->result->iterate())
-            {
-                if ($this->group_members[$record['ID']])
-                {
-                    $result->add($record);
-                    $result->count++;
-                }
-            }
-            $this->result = $result;
-        }
-
         return $this->result;
     }
 
 
     /**
-    * Search contacts
-    *
-    * @param array   List of fields to search in
-    * @param string  Search value
-    * @param boolean True for strict, False for partial (fuzzy) matching
-    * @param boolean True if results are requested, False if count only
-    * @param boolean (Not used)
-    * @param array   List of fields that cannot be empty
-    * @return array  Indexed list of contact records and 'count' value
-    */
+     * Search contacts
+     *
+     * @param mixed   $fields   The field name of array of field names to search in
+     * @param mixed   $value    Search value (or array of values when $fields is array)
+     * @param boolean $strict   True for strict, False for partial (fuzzy) matching
+     * @param boolean $select   True if results are requested, False if count only
+     * @param boolean $nocount  (Not used)
+     * @param array   $required List of fields that cannot be empty
+     *
+     * @return array  Indexed list of contact records and 'count' value
+     */
     function search($fields, $value, $strict=false, $select=true, $nocount=false, $required=array())
     {
         // special treatment for ID-based search
         if ($fields == 'ID' || $fields == $this->primary_key)
         {
-            $ids = explode(',', $value);
+            $ids = !is_array($value) ? explode(',', $value) : $value;
             $result = new rcube_result_set();
             foreach ($ids as $id)
             {
@@ -477,29 +509,34 @@
             return $result;
         }
 
-        $filter = '(|';
-        $wc = !$strict && $this->prop['fuzzy_search'] ? '*' : '';
-        if ($fields != '*')
+        // use AND operator for advanced searches
+        $filter = is_array($value) ? '(&' : '(|';
+        $wc     = !$strict && $this->prop['fuzzy_search'] ? '*' : '';
+
+        if ($fields == '*')
         {
             // search_fields are required for fulltext search
-            if (!$this->prop['search_fields'])
+            if (empty($this->prop['search_fields']))
             {
                 $this->set_error(self::ERROR_SEARCH, 'nofulltextsearch');
                 $this->result = new rcube_result_set();
                 return $this->result;
             }
-        }
-        
-        if (is_array($this->prop['search_fields']))
-        {
-            foreach ($this->prop['search_fields'] as $k => $field)
-                $filter .= "($field=$wc" . $this->_quote_string($value) . "$wc)";
+            if (is_array($this->prop['search_fields']))
+            {
+                foreach ($this->prop['search_fields'] as $field) {
+                    $filter .= "($field=$wc" . $this->_quote_string($value) . "$wc)";
+                }
+            }
         }
         else
         {
-            foreach ((array)$fields as $field)
-                if ($f = $this->_map_field($field))
-                    $filter .= "($f=$wc" . $this->_quote_string($value) . "$wc)";
+            foreach ((array)$fields as $idx => $field) {
+                $val = is_array($value) ? $value[$idx] : $value;
+                if ($f = $this->_map_field($field)) {
+                    $filter .= "($f=$wc" . $this->_quote_string($val) . "$wc)";
+                }
+            }
         }
         $filter .= ')';
 
@@ -533,15 +570,15 @@
 
 
     /**
-    * Count number of available contacts in database
-    *
-    * @return object rcube_result_set Resultset with values for 'count' and 'first'
-    */
+     * Count number of available contacts in database
+     *
+     * @return object rcube_result_set Resultset with values for 'count' and 'first'
+     */
     function count()
     {
         $count = 0;
         if ($this->conn && $this->ldap_result) {
-            $count = ldap_count_entries($this->conn, $this->ldap_result);
+            $count = $this->vlv_active ? $this->vlv_count : ldap_count_entries($this->conn, $this->ldap_result);
         } // end if
         elseif ($this->conn) {
             // We have a connection but no result set, attempt to get one.
@@ -549,7 +586,7 @@
                 // The filter is not set, set it.
                 $this->filter = $this->prop['filter'];
             } // end if
-            $this->_exec_search();
+            $this->_exec_search(true);
             if ($this->ldap_result) {
                 $count = ldap_count_entries($this->conn, $this->ldap_result);
             } // end if
@@ -560,10 +597,10 @@
 
 
     /**
-    * Return the last result set
-    *
-    * @return object rcube_result_set Current resultset or NULL if nothing selected yet
-    */
+     * Return the last result set
+     *
+     * @return object rcube_result_set Current resultset or NULL if nothing selected yet
+     */
     function get_result()
     {
         return $this->result;
@@ -571,18 +608,19 @@
 
 
     /**
-    * Get a specific contact record
-    *
-    * @param mixed   Record identifier
-    * @param boolean Return as associative array
-    * @return mixed  Hash array or rcube_result_set with all record fields
-    */
+     * Get a specific contact record
+     *
+     * @param mixed   Record identifier
+     * @param boolean Return as associative array
+     *
+     * @return mixed  Hash array or rcube_result_set with all record fields
+     */
     function get_record($dn, $assoc=false)
     {
         $res = null;
         if ($this->conn && $dn)
         {
-            $dn = base64_decode($dn);
+            $dn = self::dn_decode($dn);
 
             $this->_debug("C: Read [dn: $dn] [(objectclass=*)]");
 
@@ -610,11 +648,33 @@
 
 
     /**
-    * Create a new contact record
-    *
-    * @param array    Hash array with save data
-    * @return encoded record ID on success, False on error
-    */
+     * Check the given data before saving.
+     * If input not valid, the message to display can be fetched using get_error()
+     *
+     * @param array Assoziative array with data to save
+     *
+     * @return boolean True if input is valid, False if not.
+     */
+    public function validate($save_data)
+    {
+        // check for name input
+        if (empty($save_data['name'])) {
+            $this->set_error('warning', 'nonamewarning');
+            return false;
+        }
+
+        // validate e-mail addresses
+        return parent::validate($save_data);
+    }
+
+
+    /**
+     * Create a new contact record
+     *
+     * @param array    Hash array with save data
+     *
+     * @return encoded record ID on success, False on error
+     */
     function insert($save_cols)
     {
         // Map out the column names to their LDAP ones to build the new entry.
@@ -631,8 +691,8 @@
         } // end foreach
 
         // Verify that the required fields are set.
+        $missing = null;
         foreach ($this->prop['required_fields'] as $fld) {
-            $missing = null;
             if (!isset($newentry[$fld])) {
                 $missing[] = $fld;
             }
@@ -659,21 +719,24 @@
 
         $this->_debug("S: OK");
 
+        $dn = self::dn_encode($dn);
+
         // add new contact to the selected group
         if ($this->groups)
-            $this->add_to_group($this->group_id, base64_encode($dn));
+            $this->add_to_group($this->group_id, $dn);
 
-        return base64_encode($dn);
+        return $dn;
     }
 
 
     /**
-    * Update a specific contact record
-    *
-    * @param mixed Record identifier
-    * @param array Hash array with save data
-    * @return boolean True on success, False on error
-    */
+     * Update a specific contact record
+     *
+     * @param mixed Record identifier
+     * @param array Hash array with save data
+     *
+     * @return boolean True on success, False on error
+     */
     function update($id, $save_cols)
     {
         $record = $this->get_record($id, true);
@@ -683,6 +746,16 @@
         $newdata = array();
         $replacedata = array();
         $deletedata = array();
+
+        // flatten composite fields in $record
+        if (is_array($record['address'])) {
+          foreach ($record['address'] as $i => $struct) {
+            foreach ($struct as $col => $val) {
+              $record[$col][$i] = $val;
+            }
+          }
+        }
+
         foreach ($this->fieldmap as $col => $fld) {
             $val = $save_cols[$col];
             if ($fld) {
@@ -711,7 +784,7 @@
             } // end if
         } // end foreach
 
-        $dn = base64_decode($id);
+        $dn = self::dn_decode($id);
 
         // Update the entry as required.
         if (!empty($deletedata)) {
@@ -768,17 +841,21 @@
             }
             $this->_debug("S: OK");
 
+            $dn    = self::dn_encode($dn);
+            $newdn = self::dn_encode($newdn);
+
             // change the group membership of the contact
             if ($this->groups)
             {
-                $group_ids = $this->get_record_groups(base64_encode($dn));
+                $group_ids = $this->get_record_groups($dn);
                 foreach ($group_ids as $group_id)
                 {
-                    $this->remove_from_group($group_id, base64_encode($dn));
-                    $this->add_to_group($group_id, base64_encode($newdn));
+                    $this->remove_from_group($group_id, $dn);
+                    $this->add_to_group($group_id, $newdn);
                 }
             }
-            return base64_encode($newdn);
+
+            return $newdn;
         }
 
         return true;
@@ -786,20 +863,22 @@
 
 
     /**
-    * Mark one or more contact records as deleted
-    *
-    * @param array  Record identifiers
-    * @return boolean True on success, False on error
-    */
-    function delete($ids)
+     * Mark one or more contact records as deleted
+     *
+     * @param array   Record identifiers
+     * @param boolean Remove record(s) irreversible (unsupported)
+     *
+     * @return boolean True on success, False on error
+     */
+    function delete($ids, $force=true)
     {
         if (!is_array($ids)) {
             // Not an array, break apart the encoded DNs.
-            $dns = explode(',', $ids);
+            $ids = explode(',', $ids);
         } // end if
 
-        foreach ($dns as $id) {
-            $dn = base64_decode($id);
+        foreach ($ids as $id) {
+            $dn = self::dn_decode($id);
             $this->_debug("C: Delete [dn: $dn]");
             // Delete the record.
             $res = ldap_delete($this->conn, $dn);
@@ -811,38 +890,54 @@
             $this->_debug("S: OK");
 
             // remove contact from all groups where he was member
-            if ($this->groups)
-            {
-                $group_ids = $this->get_record_groups(base64_encode($dn));
-                foreach ($group_ids as $group_id)
-                {
-                    $this->remove_from_group($group_id, base64_encode($dn));
+            if ($this->groups) {
+                $dn = self::dn_encode($dn);
+                $group_ids = $this->get_record_groups($dn);
+                foreach ($group_ids as $group_id) {
+                    $this->remove_from_group($group_id, $dn);
                 }
             }
         } // end foreach
 
-        return count($dns);
+        return count($ids);
     }
 
 
     /**
-    * Execute the LDAP search based on the stored credentials
-    *
-    * @access private
-    */
-    private function _exec_search()
+     * Execute the LDAP search based on the stored credentials
+     */
+    private function _exec_search($count = false)
     {
         if ($this->ready)
         {
             $filter = $this->filter ? $this->filter : '(objectclass=*)';
             $function = $this->prop['scope'] == 'sub' ? 'ldap_search' : ($this->prop['scope'] == 'base' ? 'ldap_read' : 'ldap_list');
 
-            $this->_debug("C: Search [".$filter."]");
+            $this->_debug("C: Search [$filter]");
 
+            // when using VLV, we get the total count by...
+            if (!$count && $function != 'ldap_read' && $this->prop['vlv']) {
+                // ...either reading numSubOrdinates attribute
+                if ($this->prop['numsub_filter'] && ($result_count = @$function($this->conn, $this->base_dn, $this->prop['numsub_filter'], array('numSubOrdinates'), 0, 0, 0))) {
+                    $counts = ldap_get_entries($this->conn, $result_count);
+                    for ($this->vlv_count = $j = 0; $j < $counts['count']; $j++)
+                        $this->vlv_count += $counts[$j]['numsubordinates'][0];
+                    $this->_debug("D: total numsubordinates = " . $this->vlv_count);
+                }
+                else  // ...or by fetching all records dn and count them
+                    $this->vlv_count = $this->_exec_search(true);
+
+                $this->vlv_active = $this->_vlv_set_controls();
+            }
+
+            // only fetch dn for count (should keep the payload low)
+            $attrs = $count ? array('dn') : array_values($this->fieldmap);
             if ($this->ldap_result = @$function($this->conn, $this->base_dn, $filter,
-                array_values($this->fieldmap), 0, (int) $this->prop['sizelimit'], (int) $this->prop['timelimit']))
+                $attrs, 0, (int)$this->prop['sizelimit'], (int)$this->prop['timelimit']))
             {
                 $this->_debug("S: ".ldap_count_entries($this->conn, $this->ldap_result)." record(s)");
+                if ($err = ldap_errno($this->conn))
+                    $this->_debug("S: Error: " .ldap_err2str($err));
                 return true;
             }
             else
@@ -854,16 +949,36 @@
         return false;
     }
 
+    /**
+     * Set server controls for Virtual List View (paginated listing)
+     */
+    private function _vlv_set_controls()
+    {
+        $sort_ctrl = array('oid' => "1.2.840.113556.1.4.473",  'value' => $this->_sort_ber_encode((array)$this->prop['sort']));
+        $vlv_ctrl  = array('oid' => "2.16.840.1.113730.3.4.9", 'value' => $this->_vlv_ber_encode(($offset = ($this->list_page-1) * $this->page_size + 1), $this->page_size), 'iscritical' => true);
+
+        $this->_debug("C: set controls sort=" . join(' ', unpack('H'.(strlen($sort_ctrl['value'])*2), $sort_ctrl['value'])) . " ({$this->sort_col});"
+            . " vlv=" . join(' ', (unpack('H'.(strlen($vlv_ctrl['value'])*2), $vlv_ctrl['value']))) . " ($offset)");
+
+        if (!ldap_set_option($this->conn, LDAP_OPT_SERVER_CONTROLS, array($sort_ctrl, $vlv_ctrl))) {
+            $this->_debug("S: ".ldap_error($this->conn));
+            $this->set_error(self::ERROR_SEARCH, 'vlvnotsupported');
+            return false;
+        }
+
+        return true;
+    }
+
 
     /**
-    * @access private
-    */
+     * Converts LDAP entry into an array
+     */
     private function _ldap2result($rec)
     {
         $out = array();
 
         if ($rec['dn'])
-            $out[$this->primary_key] = base64_encode($rec['dn']);
+            $out[$this->primary_key] = self::dn_encode($rec['dn']);
 
         foreach ($this->fieldmap as $rf => $lf)
         {
@@ -886,8 +1001,8 @@
 
 
     /**
-    * @access private
-    */
+     * Return real field name (from fields map)
+     */
     private function _map_field($field)
     {
         return $this->fieldmap[$field];
@@ -895,9 +1010,9 @@
 
 
     /**
-    * @access private
-    */
-    private function _attr_name($name)
+     * Returns unified attribute name (resolving aliases)
+     */
+    private static function _attr_name($name)
     {
         // list of known attribute aliases
         $aliases = array(
@@ -912,8 +1027,8 @@
 
 
     /**
-    * @access private
-    */
+     * Prints debug info to the log
+     */
     private function _debug($str)
     {
         if ($this->debug)
@@ -922,9 +1037,14 @@
 
 
     /**
-    * @static
-    */
-    private function _quote_string($str, $dn=false)
+     * Quotes attribute value string
+     *
+     * @param string $str Attribute value
+     * @param bool   $dn  True if the attribute is a DN
+     *
+     * @return string Quoted string
+     */
+    private static function _quote_string($str, $dn=false)
     {
         // take firt entry if array given
         if (is_array($str))
@@ -955,9 +1075,10 @@
             $cache_members = $this->group_cache[$group_id]['members'];
 
             $members = array();
-            for ($i=1; $i<$cache_members["count"]; $i++)
+            for ($i=0; $i<$cache_members["count"]; $i++)
             {
-                $members[base64_encode($cache_members[$i])] = 1;
+                if (!empty($cache_members[$i]))
+                    $members[self::dn_encode($cache_members[$i])] = 1;
             }
             $this->group_members = $members;
             $this->group_id = $group_id;
@@ -979,42 +1100,35 @@
         if (!$this->groups)
             return array();
 
-        $this->groups_base_dn = ($this->prop['groups']['base_dn']) ?
-                $this->prop['groups']['base_dn'] : $this->base_dn;
-
-        // replace user specific dn
-        if ($this->prop['user_specific'])
-        {
-            $fu = $RCMAIL->user->get_username();
-            list($u, $d) = explode('@', $fu);
-            $dc = 'dc='.strtr($d, array('.' => ',dc='));
-            $replaces = array('%dc' => $dc, '%d' => $d, '%fu' => $fu, '%u' => $u);
-
-            $this->groups_base_dn = strtr($this->groups_base_dn, $replaces);;
-        }
-
         $base_dn = $this->groups_base_dn;
         $filter = $this->prop['groups']['filter'];
 
-        $res = ldap_search($this->conn, $base_dn, $filter, array('cn','member'));
+        $this->_debug("C: Search [$filter][dn: $base_dn]");
+
+        $res = @ldap_search($this->conn, $base_dn, $filter, array('cn','member'));
         if ($res === false)
         {
             $this->_debug("S: ".ldap_error($this->conn));
             $this->set_error(self::ERROR_SAVING, 'errorsaving');
             return array();
         }
+
         $ldap_data = ldap_get_entries($this->conn, $res);
+        $this->_debug("S: ".ldap_count_entries($this->conn, $res)." record(s)");
 
         $groups = array();
         $group_sortnames = array();
         for ($i=0; $i<$ldap_data["count"]; $i++)
         {
             $group_name = $ldap_data[$i]['cn'][0];
-            $group_id = base64_encode($group_name);
-            $groups[$group_id]['ID'] = $group_id;
-            $groups[$group_id]['name'] = $group_name;
-            $groups[$group_id]['members'] = $ldap_data[$i]['member'];
-            $group_sortnames[] = strtolower($group_name);
+            if (!$search || strstr(strtolower($group_name), strtolower($search)))
+            {
+                $group_id = self::dn_encode($group_name);
+                $groups[$group_id]['ID'] = $group_id;
+                $groups[$group_id]['name'] = $group_name;
+                $groups[$group_id]['members'] = $ldap_data[$i]['member'];
+                $group_sortnames[] = strtolower($group_name);
+            }
         }
         array_multisort($group_sortnames, SORT_ASC, SORT_STRING, $groups);
         $this->group_cache = $groups;
@@ -1035,13 +1149,15 @@
 
         $base_dn = $this->groups_base_dn;
         $new_dn = "cn=$group_name,$base_dn";
-        $new_gid = base64_encode($group_name);
+        $new_gid = self::dn_encode($group_name);
 
         $new_entry = array(
             'objectClass' => $this->prop['groups']['object_classes'],
             'cn' => $group_name,
             'member' => '',
         );
+
+        $this->_debug("C: Add [dn: $new_dn]: ".print_r($new_entry, true));
 
         $res = ldap_add($this->conn, $new_dn, $new_entry);
         if ($res === false)
@@ -1050,6 +1166,9 @@
             $this->set_error(self::ERROR_SAVING, 'errorsaving');
             return false;
         }
+
+        $this->_debug("S: OK");
+
         return array('id' => $new_gid, 'name' => $group_name);
     }
 
@@ -1066,8 +1185,10 @@
 
         $base_dn = $this->groups_base_dn;
         $group_name = $this->group_cache[$group_id]['name'];
-
         $del_dn = "cn=$group_name,$base_dn";
+
+        $this->_debug("C: Delete [dn: $del_dn]");
+
         $res = ldap_delete($this->conn, $del_dn);
         if ($res === false)
         {
@@ -1075,6 +1196,9 @@
             $this->set_error(self::ERROR_SAVING, 'errorsaving');
             return false;
         }
+
+        $this->_debug("S: OK");
+
         return true;
     }
 
@@ -1095,7 +1219,9 @@
         $group_name = $this->group_cache[$group_id]['name'];
         $old_dn = "cn=$group_name,$base_dn";
         $new_rdn = "cn=$new_name";
-        $new_gid = base64_encode($new_name);
+        $new_gid = self::dn_encode($new_name);
+
+        $this->_debug("C: Rename [dn: $old_dn] [dn: $new_rdn]");
 
         $res = ldap_rename($this->conn, $old_dn, $new_rdn, NULL, TRUE);
         if ($res === false)
@@ -1104,6 +1230,9 @@
             $this->set_error(self::ERROR_SAVING, 'errorsaving');
             return false;
         }
+
+        $this->_debug("S: OK");
+
         return $new_name;
     }
 
@@ -1125,7 +1254,9 @@
 
         $new_attrs = array();
         foreach (explode(",", $contact_ids) as $id)
-            $new_attrs['member'][] = base64_decode($id);
+            $new_attrs['member'][] = self::dn_decode($id);
+
+        $this->_debug("C: Add [dn: $group_dn]: ".print_r($new_attrs, true));
 
         $res = ldap_mod_add($this->conn, $group_dn, $new_attrs);
         if ($res === false)
@@ -1134,6 +1265,9 @@
             $this->set_error(self::ERROR_SAVING, 'errorsaving');
             return 0;
         }
+
+        $this->_debug("S: OK");
+
         return count($new_attrs['member']);
     }
 
@@ -1155,7 +1289,9 @@
 
         $del_attrs = array();
         foreach (explode(",", $contact_ids) as $id)
-            $del_attrs['member'][] = base64_decode($id);
+            $del_attrs['member'][] = self::dn_decode($id);
+
+        $this->_debug("C: Delete [dn: $group_dn]: ".print_r($del_attrs, true));
 
         $res = ldap_mod_del($this->conn, $group_dn, $del_attrs);
         if ($res === false)
@@ -1164,6 +1300,9 @@
             $this->set_error(self::ERROR_SAVING, 'errorsaving');
             return 0;
         }
+
+        $this->_debug("S: OK");
+
         return count($del_attrs['member']);
     }
 
@@ -1181,10 +1320,12 @@
             return array();
 
         $base_dn = $this->groups_base_dn;
-        $contact_dn = base64_decode($contact_id);
-        $filter = "(member=$contact_dn)";
+        $contact_dn = self::dn_decode($contact_id);
+        $filter = strtr("(member=$contact_dn)", array('\\' => '\\\\'));
 
-        $res = ldap_search($this->conn, $base_dn, $filter, array('cn'));
+        $this->_debug("C: Search [$filter][dn: $base_dn]");
+
+        $res = @ldap_search($this->conn, $base_dn, $filter, array('cn'));
         if ($res === false)
         {
             $this->_debug("S: ".ldap_error($this->conn));
@@ -1192,14 +1333,157 @@
             return array();
         }
         $ldap_data = ldap_get_entries($this->conn, $res);
+        $this->_debug("S: ".ldap_count_entries($this->conn, $res)." record(s)");
 
         $groups = array();
         for ($i=0; $i<$ldap_data["count"]; $i++)
         {
             $group_name = $ldap_data[$i]['cn'][0];
-            $group_id = base64_encode($group_name);
+            $group_id = self::dn_encode($group_name);
             $groups[$group_id] = $group_id;
         }
         return $groups;
     }
+
+
+    /**
+     * Generate BER encoded string for Virtual List View option
+     *
+     * @param integer List offset (first record)
+     * @param integer Records per page
+     * @return string BER encoded option value
+     */
+    private function _vlv_ber_encode($offset, $rpp)
+    {
+        # this string is ber-encoded, php will prefix this value with:
+        # 04 (octet string) and 10 (length of 16 bytes)
+        # the code behind this string is broken down as follows:
+        # 30 = ber sequence with a length of 0e (14) bytes following
+        # 20 = type integer (in two's complement form) with 2 bytes following (beforeCount): 01 00 (ie 0)
+        # 20 = type integer (in two's complement form) with 2 bytes following (afterCount):  01 18 (ie 25-1=24)
+        # a0 = type context-specific/constructed with a length of 06 (6) bytes following
+        # 20 = type integer with 2 bytes following (offset): 01 01 (ie 1)
+        # 20 = type integer with 2 bytes following (contentCount):  01 00
+        # the following info was taken from the ISO/IEC 8825-1:2003 x.690 standard re: the
+        # encoding of integer values (note: these values are in
+        # two-complement form so since offset will never be negative bit 8 of the
+        # leftmost octet should never by set to 1):
+        # 8.3.2: If the contents octets of an integer value encoding consist
+        # of more than one octet, then the bits of the first octet (rightmost) and bit 8
+        # of the second (to the left of first octet) octet:
+        # a) shall not all be ones; and
+        # b) shall not all be zero
+
+        # construct the string from right to left
+        $str = "020100"; # contentCount
+
+        $ber_val = self::_ber_encode_int($offset);  // returns encoded integer value in hex format
+
+        // calculate octet length of $ber_val
+        $str = self::_ber_addseq($ber_val, '02') . $str;
+
+        // now compute length over $str
+        $str = self::_ber_addseq($str, 'a0');
+
+        // now tack on records per page
+        $str = sprintf("0201000201%02x", min(255, $rpp)-1) . $str;
+
+        // now tack on sequence identifier and length
+        $str = self::_ber_addseq($str, '30');
+
+        return pack('H'.strlen($str), $str);
+    }
+
+
+    /**
+     * create ber encoding for sort control
+     *
+     * @param array List of cols to sort by
+     * @return string BER encoded option value
+     */
+    private function _sort_ber_encode($sortcols)
+    {
+        $str = '';
+        foreach (array_reverse((array)$sortcols) as $col) {
+            $ber_val = self::_string2hex($col);
+
+            # 30 = ber sequence with a length of octet value
+            # 04 = octet string with a length of the ascii value
+            $oct = self::_ber_addseq($ber_val, '04');
+            $str = self::_ber_addseq($oct, '30') . $str;
+        }
+
+        // now tack on sequence identifier and length
+        $str = self::_ber_addseq($str, '30');
+
+        return pack('H'.strlen($str), $str);
+    }
+
+    /**
+     * Add BER sequence with correct length and the given identifier
+     */
+    private static function _ber_addseq($str, $identifier)
+    {
+        $len = dechex(strlen($str)/2);
+        if (strlen($len) % 2 != 0)
+            $len = '0'.$len;
+
+        return $identifier . $len . $str;
+    }
+
+    /**
+     * Returns BER encoded integer value in hex format
+     */
+    private static function _ber_encode_int($offset)
+    {
+        $val = dechex($offset);
+        $prefix = '';
+
+        // check if bit 8 of high byte is 1
+        if (preg_match('/^[89abcdef]/', $val))
+            $prefix = '00';
+
+        if (strlen($val)%2 != 0)
+            $prefix .= '0';
+
+        return $prefix . $val;
+    }
+
+    /**
+     * Returns ascii string encoded in hex
+     */
+    private static function _string2hex($str)
+    {
+        $hex = '';
+        for ($i=0; $i < strlen($str); $i++)
+            $hex .= dechex(ord($str[$i]));
+        return $hex;
+    }
+
+    /**
+     * HTML-safe DN string encoding
+     *
+     * @param string $str DN string
+     *
+     * @return string Encoded HTML identifier string
+     */
+    static function dn_encode($str)
+    {
+        // @TODO: to make output string shorter we could probably
+        //        remove dc=* items from it
+        return rtrim(strtr(base64_encode($str), '+/', '-_'), '=');
+    }
+
+    /**
+     * Decodes DN string encoded with _dn_encode()
+     *
+     * @param string $str Encoded HTML identifier string
+     *
+     * @return string DN string
+     */
+    static function dn_decode($str)
+    {
+        $str = str_pad(strtr($str, '-_', '+/'), strlen($str) % 4, '=', STR_PAD_RIGHT);
+        return base64_decode($str);
+    }
 }

--
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