Support autocompletion for tables and columns

Update documentation
Switch to ownCloud's DBAL (not fully tested, yet)
Bump to v2.0

ajax/settings.php

@@ -1,5 +1,39 @@
 <?php
 
+/**
+ * ownCloud - user_sql
+ *
+ * @author Andreas Böhler and contributors
+ * @copyright 2012-2015 Andreas Böhler <dev (at) aboehler (dot) at>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+ /**
+  * This is the AJAX portion of the settings page.
+  * 
+  * It can:
+  *   - Verify the connection settings
+  *   - Load autocomplete values for tables
+  *   - Load autocomplete values for columns
+  *   - Save settings for a given domain
+  *   - Load settings for a given domain
+  * 
+  * It always returns JSON encoded responses
+  */
+ 
 namespace OCA\user_sql;
 
 // Init owncloud
@@ -17,15 +51,19 @@ $helper = new \OCA\user_sql\lib\Helper;
 $l = \OC::$server->getL10N('user_sql');
 
 $params = $helper -> getParameterArray();
+$response = new \OCP\AppFramework\Http\JSONResponse();
 
+// Check if the request is for us
 if(isset($_POST['appname']) && ($_POST['appname'] === 'user_sql') && isset($_POST['function']) && isset($_POST['domain']))
 {
     $domain = $_POST['domain'];
     switch($_POST['function'])
     {
+        // Save the settings for the given domain to the database
         case 'saveSettings':
                 foreach($params as $param)
                 {
+                    // Special handling for checkbox fields
                     if(isset($_POST[$param]))
                     {
                         if($param === 'set_strip_domain')
@@ -60,24 +98,132 @@ if(isset($_POST['appname']) && ($_POST['appname'] === 'user_sql') && isset($_POS
                         }
                     }
                 }
+                $response->setData(array('status' => 'success',            
+                        'data' => array('message' => $l -> t('Application settings successfully stored.'))));
         break;
 
+        // Load the settings for a given domain
         case 'loadSettingsForDomain':
             $retArr = array();
             foreach($params as $param)
             {
                 $retArr[$param] = \OC::$server->getConfig()->getAppValue('user_sql', $param.'_'.$domain, '');     
             }
-            \OCP\JSON::success(array('settings' => $retArr));
+            $response->setData(array('status' => 'success',            
-            return true;
+                            'settings' => $retArr));
+        break;
+
+        // Try to verify the database connection settings
+        case 'verifySettings':
+            $cm = new \OC\DB\ConnectionFactory();
+
+            if(!isset($_POST['sql_driver']))
+            {
+                $response->setData(array('status' => 'error',
+                            'data' => array('message' => $l -> t('Error connecting to database: No driver specified.'))));
+                break;
+            }
+
+            if(($_POST['sql_hostname'] === '') || ($_POST['sql_database'] === ''))
+            {
+                $response->setData(array('status' => 'error',
+                        'data' => array('message' => $l -> t('Error connecting to database: You must specify at least host and database'))));
+                break;
+            }
+
+            $parameters = array('host' => $_POST['sql_hostname'],
+                'password' => $_POST['sql_password'],
+                'user' => $_POST['sql_username'],
+                'dbname' => $_POST['sql_database'],
+                'tablePrefix' => ''
+            );
+
+            try {
+                $conn = $cm -> getConnection($_POST['sql_driver'], $parameters);
+                $response->setData(array('status' => 'success',
+                            'data' => array('message' => $l -> t('Successfully connected to database'))));
+            }
+            catch(\Exception $e)
+            {
+                $response->setData(array('status' => 'error',
+                            'data' => array('message' => $l -> t('Error connecting to database: ').$e->getMessage())));
+            }
+        break;
+
+        // Get the autocompletion values for a column
+        case 'getColumnAutocomplete':
+            $cm = new \OC\DB\ConnectionFactory();
+            $search = $_POST['request'];
+            $table = $_POST['sql_table'];
+            $parameters = array('host' => $_POST['sql_hostname'],
+                'password' => $_POST['sql_password'],
+                'user' => $_POST['sql_username'],
+                'dbname' => $_POST['sql_database'],
+                'tablePrefix' => ''
+            );
+            try {
+                $conn = $cm -> getConnection($_POST['sql_driver'], $parameters);
+                $platform = $conn -> getDatabasePlatform();
+                $query = $platform -> getListTableColumnsSQL($table);
+                $result = $conn -> executeQuery($query);
+                $ret = array();
+                while($row = $result -> fetch())
+                {
+                    $name = $row['Field'];
+                    if(($search === '') || ($search === 'search') || (strpos($name, $search) === 0))
+                    {
+                        $ret[] = array('label' => $name,
+                                       'value' => $name);
+                    }
+                }
+                $response -> setData($ret);
+            }
+            catch(\Exception $e)
+            {
+                $response->setData(array());
+            }
+        break;
+
+        // Get the autocompletion values for a table
+        case 'getTableAutocomplete':
+            $cm = new \OC\DB\ConnectionFactory();
+            $search = $_POST['request'];
+            $parameters = array('host' => $_POST['sql_hostname'],
+                'password' => $_POST['sql_password'],
+                'user' => $_POST['sql_username'],
+                'dbname' => $_POST['sql_database'],
+                'tablePrefix' => ''
+            );
+            try {
+                $conn = $cm -> getConnection($_POST['sql_driver'], $parameters);
+                $platform = $conn -> getDatabasePlatform();
+                $query = $platform -> getListTablesSQL();
+                $result = $conn -> executeQuery($query);
+                $ret = array();
+                while($row = $result -> fetch())
+                {
+                    $name = $row['Tables_in_'.$_POST['sql_database']];
+                    if(($search === '') || ($search === 'search') || (strpos($name, $search) === 0))
+                    {
+                        $ret[] = array('label' => $name,
+                                       'value' => $name);
+                    }
+                }
+                $response -> setData($ret);
+            }
+            catch(\Exception $e)
+            {
+                $response->setData(array());
+            }
         break;
     }
 
 } else
 {
-    \OCP\JSON::error(array('data' => array('message' => $l -> t('Not submitted for us.'))));
+    // If the request was not for us, set an error message
-    return false;
+    $response->setData(array('status' => 'error', 
+                    'data' => array('message' => $l -> t('Not submitted for us.'))));
 }
 
-\OCP\JSON::success(array('data' => array('message' => $l -> t('Application settings successfully stored.'))));
+// Return the JSON array
-return true;
+echo $response->render();

appinfo/info.xml

@@ -6,7 +6,7 @@
        <licence>AGPL</licence>
        <author>Andreas Boehler &lt;dev (at) aboehler 
 (dot) at &gt;</author>
-       <version>1.99</version>
+       <version>2.0</version>
        <requiremin>8.1</requiremin>
        <shipped>false</shipped>
        <namespace>user_sql</namespace>

js/settings.js

@@ -1,3 +1,5 @@
+// settings.js of user_sql
+
 // declare namespace
 var user_sql = user_sql ||
 {
@@ -14,11 +16,132 @@ user_sql.adminSettingsUI = function()
         // enable tabs on settings page
         $('#sql').tabs();
         
+        // Attach auto-completion to all column fields
+        $('#col_username, #col_password, #col_displayname, #col_active, #col_email').autocomplete({
+            source: function(request, response)
+            {
+                var post = $('#sqlForm').serializeArray();
+                var domain = $('#sql_domain_chooser option:selected').val();
+                
+                post.push({
+                    name: 'function',
+                    value: 'getColumnAutocomplete'
+                });
+                
+                post.push({
+                    name: 'domain',
+                    value: domain
+                });
+                
+                post.push({
+                    name: 'request',
+                    value: request.term
+                });
+    
+                // Ajax foobar
+                $.post(OC.filePath('user_sql', 'ajax', 'settings.php'), post, response, 'json');
+            },
+            minLength: 0,
+            open: function() {
+                $(this).attr('state', 'open');
+            },
+            close: function() {
+                $(this).attr('state', 'closed');
+            }
+        }).focus(function() {
+           if($(this).attr('state') != 'open')
+           {
+               $(this).autocomplete("search");
+           } 
+        });        
+        
+        // Attach auto-completion to all table fields
+        $('#sql_table').autocomplete({
+            source: function(request, response)
+            {
+                var post = $('#sqlForm').serializeArray();
+                var domain = $('#sql_domain_chooser option:selected').val();
+                
+                post.push({
+                    name: 'function',
+                    value: 'getTableAutocomplete'
+                });
+                
+                post.push({
+                    name: 'domain',
+                    value: domain
+                });
+                
+                post.push({
+                    name: 'request',
+                    value: request.term
+                });
+    
+                // Ajax foobar
+                $.post(OC.filePath('user_sql', 'ajax', 'settings.php'), post, response, 'json');
+            },
+            minLength: 0,
+            open: function() {
+                $(this).attr('state', 'open');
+            },
+            close: function() {
+                $(this).attr('state', 'closed');
+            }
+        }).focus(function() {
+           if($(this).attr('state') != 'open')
+           {
+               $(this).autocomplete("search");
+           } 
+        });
+        
+        // Verify the SQL database settings
+        $('#sqlVerify').click(function(event)
+        {
+            event.preventDefault();
+
+            var post = $('#sqlForm').serializeArray();
+            var domain = $('#sql_domain_chooser option:selected').val();
+            
+            post.push({
+                name: 'function',
+                value: 'verifySettings'
+            });
+            
+            post.push({
+                name: 'domain',
+                value: domain
+            });
+
+            $('#sql_verify_message').show();
+            $('#sql_success_message').hide();
+            $('#sql_error_message').hide();
+            $('#sql_update_message').hide();
+            // Ajax foobar
+            $.post(OC.filePath('user_sql', 'ajax', 'settings.php'), post, function(data)
+            {
+                $('#sql_verify_message').hide();
+                if(data.status == 'success')
+                {
+                    $('#sql_success_message').html(data.data.message);
+                    $('#sql_success_message').show();
+                    window.setTimeout(function()
+                    {
+                        $('#sql_success_message').hide();
+                    }, 10000);
+                } else
+                {
+                    $('#sql_error_message').html(data.data.message);
+                    $('#sql_error_message').show();
+                }
+            }, 'json');
+            return false;
+        });            
+
+        // Save the settings for a domain
         $('#sqlSubmit').click(function(event)
         {
             event.preventDefault();
 
-            var self = $(this);
             var post = $('#sqlForm').serializeArray();
             var domain = $('#sql_domain_chooser option:selected').val();
             
@@ -34,6 +157,7 @@ user_sql.adminSettingsUI = function()
 
             $('#sql_update_message').show();
             $('#sql_success_message').hide();
+            $('#sql_verify_message').hide();
             $('#sql_error_message').hide();
             // Ajax foobar
             $.post(OC.filePath('user_sql', 'ajax', 'settings.php'), post, function(data)
@@ -56,16 +180,22 @@ user_sql.adminSettingsUI = function()
             return false;
         });
 
+        // Attach event handler to the domain chooser
         $('#sql_domain_chooser').change(function() {
            user_sql.loadDomainSettings($('#sql_domain_chooser option:selected').val());
         });
-
-        
     }
 };
 
+/**
+ * Load the settings for the selected domain
+ * @param string domain The domain to load
+ */
 user_sql.loadDomainSettings = function(domain)
 {
+    $('#sql_success_message').hide();
+    $('#sql_error_message').hide();
+    $('#sql_verify_message').hide();
     $('#sql_loading_message').show();
     var post = [
         {
@@ -120,10 +250,11 @@ user_sql.loadDomainSettings = function(domain)
                 $('#sql_error_message').html(data.data.message);
                 $('#sql_error_message').show();
             }
-        }
+        }, 'json'
     );
 };
 
+// Run our JS if the SQL settings are present
 $(document).ready(function()
 {
     if($('#sql'))

lib/helper.php

@@ -29,11 +29,18 @@ class Helper {
     protected $db_conn;
     protected $settings;
     
+    /**
+     * The default constructor initializes some parameters
+     */
     public function __construct()
     {
         $this->db_conn = false;
     }
 
+    /**
+     * Return an array with all supported parameters
+     * @return array Containing strings of the parameters
+     */
     public function getParameterArray()
     {
         $params = array(
@@ -59,6 +66,12 @@ class Helper {
         return $params;
     }
     
+    /**
+     * Load the settings for a given domain. If the domain is not found,
+     * the settings for 'default' are returned instead.
+     * @param string $domain The domain name
+     * @return array of settings
+     */
     public function loadSettingsForDomain($domain)
     {
         \OCP\Util::writeLog('OC_USER_SQL', "Trying to load settings for domain: " . $domain, \OCP\Util::DEBUG);
@@ -77,6 +90,15 @@ class Helper {
         return $settings;
     }    
     
+    /**
+     * Run a given query type and return the results
+     * @param string $type The type of query to run
+     * @param array $params The parameter array of the query (i.e. the values to bind as key-value pairs)
+     * @param bool $execOnly Only execute the query, but don't fetch the results (optional, default = false)
+     * @param bool $fetchArray Fetch an array instead of a single row (optional, default=false)
+     * @param array $limits use the given limits for the query (optional, default = empty)
+     * @return mixed
+     */
     public function runQuery($type, $params, $execOnly = false, $fetchArray = false, $limits = array())
     {
         \OCP\Util::writeLog('OC_USER_SQL', "Entering runQuery for type: " . $type, \OCP\Util::DEBUG);        
@@ -188,18 +210,29 @@ class Helper {
         return $row;
     }
 
+    /**
+     * Connect to the database using ownCloud's DBAL
+     * @param array $settings The settings for the connection
+     * @return bool
+     */
     public function connectToDb($settings)
     {
         $this -> settings = $settings;
-        $dsn = $this -> settings['sql_driver'] . ":host=" . $this -> settings['sql_hostname'] . ";dbname=" . $this -> settings['sql_database'];
+        $cm = new \OC\DB\ConnectionFactory();
+        $parameters = array('host' => $this -> settings['sql_hostname'],
+                'password' => $this -> settings['sql_password'],
+                'user' => $this -> settings['sql_username'],
+                'dbname' => $this -> settings['sql_database'],
+                'tablePrefix' => ''
+            );
         try
         {
-            $this -> db = new \PDO($dsn, $this -> settings['sql_username'], $this -> settings['sql_password']);
+            $this -> db = $cm -> getConnection($this -> settings['sql_driver'], $parameters);
             $this -> db -> query("SET NAMES 'UTF8'");
             $this -> db_conn = true;
             return true;
         } 
-        catch (\PDOException $e)
+        catch (\Exception $e)
         {
             \OCP\Util::writeLog('OC_USER_SQL', 'Failed to connect to the database: ' . $e -> getMessage(), \OCP\Util::ERROR);
             $this -> db_conn = false;

templates/settings.php

@@ -15,7 +15,7 @@ $cfgClass = $ocVersion >= 7 ? 'section' : 'personalblock';
         <?php endforeach ?>
     </select>
     <ul>
-      <li><a id="sqlBasicSettings" href="#sql-1"><?php p($l -> t('Basic Settings')); ?></a></li>
+      <li><a id="sqlBasicSettings" href="#sql-1"><?php p($l -> t('Connection Settings')); ?></a></li>
       <li><a id="sqlAdvSettings" href="#sql-2"><?php p($l -> t('Advanced Settings')); ?></a></li>
     </ul>
 
@@ -41,11 +41,12 @@ $cfgClass = $ocVersion >= 7 ? 'section' : 'personalblock';
             <tr><td><label for="sql_username"><?php p($l -> t('Username')); ?></label></td><td><input type="text" id="sql_username" name="sql_username" value="<?php p($_['sql_username']); ?>" /></td></tr>
             <tr><td><label for="sql_database"><?php p($l -> t('Database')); ?></label></td><td><input type="text" id="sql_database" name="sql_database" value="<?php p($_['sql_database']); ?>" /></td></tr>
             <tr><td><label for="sql_password"><?php p($l -> t('Password')); ?></label></td><td><input type="password" id="sql_password" name="sql_password" value="<?php p($_['sql_password']); ?>" /></td></tr>
-            <tr><td><label for="sql_table"><?php p($l -> t('Table')); ?></label></td><td><input type="text" id="sql_table" name="sql_table" value="<?php p($_['sql_table']); ?>" /></td></tr>
+            <tr><td></td><td><input type="submit" id="sqlVerify" value="<?php p($l -> t('Verify Settings')); ?>"></td></tr>
         </table>
         </fieldset>
         <fieldset id="sql-2">
         <table>
+            <tr><td><label for="sql_table"><?php p($l -> t('Table')); ?></label></td><td><input type="text" id="sql_table" name="sql_table" value="<?php p($_['sql_table']); ?>" /></td></tr>            
             <tr><td><label for="col_username"><?php p($l -> t('Username Column')); ?></label></td><td><input type="text" id="col_username" name="col_username" value="<?php p($_['col_username']); ?>" /></td></tr>
             <tr><td><label for="col_password"><?php p($l -> t('Password Column')); ?></label></td><td><input type="text" id="col_password" name="col_password" value="<?php p($_['col_password']); ?>" /></td></tr>
             <tr><td><label for="set_allow_pwchange"><?php p($l -> t('Allow password changing (read README!)')); ?></label></td><td><input type="checkbox" id="set_allow_pwchange" name="set_allow_pwchange" value="1"<?php
@@ -101,6 +102,7 @@ $cfgClass = $ocVersion >= 7 ? 'section' : 'personalblock';
         <input id="sqlSubmit" type="submit" value="<?php p($l -> t('Save')); ?>" />
         <div id="sql_update_message" class="statusmessage"><?php p($l -> t('Saving...')); ?></div>
         <div id="sql_loading_message" class="statusmessage"><?php p($l -> t('Loading...')); ?></div>
+        <div id="sql_verify_message" class="statusmessage"><?php p($l -> t('Verifying...')); ?></div>
         <div id="sql_error_message" class="errormessage"></div>
         <div id="sql_success_message" class="successmessage"></div>
     </div>

user_sql.php

@@ -34,11 +34,14 @@ use \OCA\user_sql\lib\Helper;
 class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\UserInterface
 {
     protected $cache;
-    // cached settings
     protected $settings;
     protected $helper;
     protected $session_cache_name;
 
+    /**
+     * The default constructor. It loads the settings for the given domain
+     * and tries to connect to the database.
+     */
     public function __construct()
     {
 		$memcache = \OC::$server->getMemCacheFactory();
@@ -54,6 +57,17 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
         return false;
     }
 
+    /**
+     * Sync the user's E-Mail address with the address stored by ownCloud.
+     * We have three (four) sync modes:
+     *   - none:     Does nothing
+     *   - initial:  Do the sync only once from SQL -> ownCloud
+     *   - forcesql: The SQL database always wins and sync to ownCloud
+     *   - forceoc:  ownCloud always wins and syncs to SQL
+     * 
+     * @param string $uid The user's ID to sync
+     * @return bool Success or Fail
+     */
     private function doEmailSync($uid)
     {
         \OCP\Util::writeLog('OC_USER_SQL', "Entering doEmailSync for UID: $uid", \OCP\Util::DEBUG);
@@ -100,6 +114,13 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
         return true;
     }
 
+    /**
+     * This maps the username to the specified domain name.
+     * It can only append a default domain name.
+     * 
+     * @param string $uid The UID to work with
+     * @return string The mapped UID
+     */
     private function doUserDomainMapping($uid)
     {
         $uid = trim($uid);
@@ -118,6 +139,11 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
         return $uid;
     }
 
+    /**
+     * Return the actions implemented by this backend
+     * @param $actions
+     * @return bool
+     */
     public function implementsAction($actions)
     {
         return (bool)((\OC_User_Backend::CHECK_PASSWORD
@@ -126,11 +152,19 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
 			) & $actions);
     }
 
+    /**
+     * Checks if this backend has user listing support
+     * @return bool
+     */
     public function hasUserListings()
     {
         return true;
     }
 
+    /**
+     * Create a new user account using this backend
+     * @return bool always false, as we can't create users
+     */
     public function createUser()
     {
         // Can't create user
@@ -138,6 +172,11 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
         return false;
     }
 
+    /**
+     * Delete a user account using this backend
+     * @param string $uid The user's ID to delete
+     * @return bool always false, as we can't delete users
+     */
     public function deleteUser($uid)
     {
         // Can't delete user
@@ -145,6 +184,14 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
         return false;
     }
 
+    /**
+     * Set (change) a user password
+     * This can be enabled/disabled in the settings (set_allow_pwchange)
+     * 
+     * @param string $uid      The user ID
+     * @param string $password The user's new password
+     * @return bool The return status
+     */
     public function setPassword($uid, $password)
     {
         // Update the user's password - this might affect other services, that
@@ -192,10 +239,10 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
     }
 
     /**
-     * @brief Check if the password is correct
+     * Check if the password is correct
-     * @param $uid The username
+     * @param string $uid      The username
-     * @param $password The password
+     * @param string $password The password
-     * @returns true/false
+     * @return bool true/false
      *
      * Check if the password is correct without logging in the user
      */
@@ -250,6 +297,10 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
         }
     }
 
+    /**
+     * Count the number of users
+     * @return int The user count
+     */
 	public function countUsers()
 	{
         \OCP\Util::writeLog('OC_USER_SQL', "Entering countUsers()", \OCP\Util::DEBUG);
@@ -269,12 +320,12 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
 	}
 
     /**
-     * @brief Get a list of all users
+     * Get a list of all users
-     * @returns array with all uids
+     * @param string $search The search term (can be empty)
-     *
+     * @param int $limit     The search limit (can be null)
-     * Get a list of all users.
+     * @param int $offset    The search offset (can be null)
+     * @return array with all uids
      */
-
     public function getUsers($search = '', $limit = null, $offset = null)
     {
         \OCP\Util::writeLog('OC_USER_SQL', "Entering getUsers() with Search: $search, Limit: $limit, Offset: $offset", \OCP\Util::DEBUG);
@@ -308,11 +359,10 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
     }
 
     /**
-     * @brief check if a user exists
+     * Check if a user exists
      * @param string $uid the username
      * @return boolean
      */
-
     public function userExists($uid)
     {
 
@@ -341,6 +391,11 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
 
     }
 
+    /**
+     * Get the display name of the user
+     * @param string $uid The user ID
+     * @return mixed The user's display name or FALSE
+     */
     public function getDisplayName($uid)
     {
         \OCP\Util::writeLog('OC_USER_SQL', "Entering getDisplayName() for UID: $uid", \OCP\Util::DEBUG);
@@ -398,8 +453,8 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
      * salt used - hence
      * the second parameter ($pw_db), which is the existing hash from the DB.
      *
-     * @param string $pw
+     * @param string $pw        cleartext password
-     * @param string $encrypted password
+     * @param string $pw_db     encrypted password from database
      * @return string encrypted password.
      */
     private function pacrypt($pw, $pw_db = "")
@@ -486,11 +541,14 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
         return $password;
     }
 
-    //
+    /**
-    // md5crypt
+     * md5crypt
-    // Action: Creates MD5 encrypted password
+     * Creates MD5 encrypted password
-    // Call: md5crypt (string cleartextpassword)
+     * @param string $pw    The password to encrypt
-    //
+     * @param string $salt  The salt to use
+     * @param string $magic ?
+     * @return string The encrypted password
+     */
 
     private function md5crypt($pw, $salt = "", $magic = "")
     {
@@ -563,6 +621,10 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
         return "$magic$salt\$$passwd";
     }
 
+    /**
+     * Create a new salte
+     * @return string The salt
+     */
     private function create_salt()
     {
         srand((double) microtime() * 1000000);
@@ -570,11 +632,22 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
         return $salt;
     }
 
+    /**
+     * Encrypt using SSHA256 algorithm
+     * @param string $pw   The password
+     * @param string $salt The salt to use
+     * @return string The hashed password, prefixed by {SSHA256}
+     */
     private function ssha256($pw, $salt)
 	{
 	    return '{SSHA256}'.base64_encode(hash('sha256',$pw.$salt,true).$salt);
 	}
 
+    /**
+     * PostfixAdmin's hex2bin function
+     * @param string $str The string to convert
+     * @return string The converted string
+     */
     private function pahex2bin($str)
     {
         if(function_exists('hex2bin'))
@@ -593,6 +666,9 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
         }
     }
 
+    /**
+     * Convert to 64?
+     */
     private function to64($v, $n)
     {
         $ITOA64 = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
@@ -608,8 +684,8 @@ class OC_USER_SQL extends \OC_User_Backend implements \OCP\IUserBackend, \OCP\Us
 
 	/**
 	 * Store a value in memcache or the session, if no memcache is available
-	 * @param string $key
+	 * @param string $key  The key
-	 * @param mixed $value
+	 * @param mixed $value The value to store
 	 * @param int $ttl (optional) defaults to 3600 seconds.
 	 */
 	private function setCache($key, $value, $ttl=3600)