From 4490d03649e1ce1a90274a0dce56fe8e5d2859ae Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Thu, 10 Jan 2013 06:32:29 -0500
Subject: [PATCH] Attach updatedb.sh script to the installer interface

---
 installer/rcube_install.php |  475 ++++++++++++++++++++++++++++++++--------------------------
 1 files changed, 260 insertions(+), 215 deletions(-)

diff --git a/installer/rcube_install.php b/installer/rcube_install.php
index 677dda1..29c18d9 100644
--- a/installer/rcube_install.php
+++ b/installer/rcube_install.php
@@ -5,12 +5,12 @@
  | rcube_install.php                                                     |
  |                                                                       |
  | This file is part of the Roundcube Webmail package                    |
- | Copyright (C) 2008-2009, Roundcube Dev. - Switzerland                 |
- | Licensed under the GNU Public License                                 |
+ | Copyright (C) 2008-2012, The Roundcube Dev Team                       |
+ |                                                                       |
+ | Licensed under the GNU General Public License version 3 or            |
+ | any later version with exceptions for skins & plugins.                |
+ | See the README file for a full license statement.                     |
  +-----------------------------------------------------------------------+
-
- $Id:  $
-
 */
 
 
@@ -29,20 +29,39 @@
   var $config = array();
   var $configured = false;
   var $last_error = null;
+  var $db_map = array('pgsql' => 'postgres', 'mysqli' => 'mysql', 'sqlsrv' => 'mssql');
   var $email_pattern = '([a-z0-9][a-z0-9\-\.\+\_]*@[a-z0-9]([a-z0-9\-][.]?)*[a-z0-9])';
   var $bool_config_props = array();
 
-  var $obsolete_config = array('db_backend');
+  var $obsolete_config = array('db_backend', 'double_auth');
   var $replaced_config = array(
-    'skin_path' => 'skin',
-    'locale_string' => 'language',
-    'multiple_identities' => 'identities_level',
+    'skin_path'            => 'skin',
+    'locale_string'        => 'language',
+    'multiple_identities'  => 'identities_level',
     'addrbook_show_images' => 'show_images',
+    'imap_root'            => 'imap_ns_personal',
+    'pagesize'             => 'mail_pagesize',
+    'default_imap_folders' => 'default_folders',
+    'top_posting'          => 'reply_mode',
   );
-  
+
   // these config options are required for a working system
-  var $required_config = array('db_dsnw', 'db_table_contactgroups', 'db_table_contactgroupmembers', 'des_key');
-  
+  var $required_config = array(
+    'db_dsnw', 'db_table_contactgroups', 'db_table_contactgroupmembers',
+    'des_key', 'session_lifetime', 'support_url',
+  );
+
+  // list of supported database drivers
+  var $supported_dbs = array(
+    'MySQL'               => 'pdo_mysql',
+    'PostgreSQL'          => 'pdo_pgsql',
+    'SQLite'              => 'pdo_sqlite',
+    'SQLite (v2)'         => 'pdo_sqlite2',
+    'SQL Server (SQLSRV)' => 'pdo_sqlsrv',
+    'SQL Server (DBLIB)'  => 'pdo_dblib',
+  );
+
+
   /**
    * Constructor
    */
@@ -51,20 +70,20 @@
     $this->step = intval($_REQUEST['_step']);
     $this->is_post = $_SERVER['REQUEST_METHOD'] == 'POST';
   }
-  
+
   /**
    * Singleton getter
    */
   function get_instance()
   {
     static $inst;
-    
+
     if (!$inst)
       $inst = new rcube_install();
-    
+
     return $inst;
   }
-  
+
   /**
    * Read the default config files and store properties
    */
@@ -90,18 +109,19 @@
    */
   function _load_config($suffix)
   {
-    @include RCMAIL_CONFIG_DIR . '/main.inc' . $suffix;
-    if (is_array($rcmail_config)) {
-      $this->config += $rcmail_config;
+    if (is_readable($main_inc = RCUBE_CONFIG_DIR . 'main.inc' . $suffix)) {
+      include($main_inc);
+      if (is_array($rcmail_config))
+        $this->config += $rcmail_config;
     }
-      
-    @include RCMAIL_CONFIG_DIR . '/db.inc'. $suffix;
-    if (is_array($rcmail_config)) {
-      $this->config += $rcmail_config;
+    if (is_readable($db_inc = RCUBE_CONFIG_DIR . 'db.inc'. $suffix)) {
+      include($db_inc);
+      if (is_array($rcmail_config))
+        $this->config += $rcmail_config;
     }
   }
-  
-  
+
+
   /**
    * Getter for a certain config property
    *
@@ -112,14 +132,14 @@
   function getprop($name, $default = '')
   {
     $value = $this->config[$name];
-    
+
     if ($name == 'des_key' && !$this->configured && !isset($_REQUEST["_$name"]))
       $value = rcube_install::random_key(24);
-    
+
     return $value !== null && $value !== '' ? $value : $default;
   }
-  
-  
+
+
   /**
    * Take the default config file and replace the parameters
    * with the submitted form data
@@ -129,26 +149,29 @@
    */
   function create_config($which, $force = false)
   {
-    $out = @file_get_contents(RCMAIL_CONFIG_DIR . "/{$which}.inc.php.dist");
-    
+    $out = @file_get_contents(RCUBE_CONFIG_DIR . $which . '.inc.php.dist');
+
     if (!$out)
       return '[Warning: could not read the config template file]';
 
     foreach ($this->config as $prop => $default) {
-      $value = (isset($_POST["_$prop"]) || $this->bool_config_props[$prop]) ? $_POST["_$prop"] : $default;
-      
+
+      $is_default = !isset($_POST["_$prop"]);
+      $value      = !$is_default || $this->bool_config_props[$prop] ? $_POST["_$prop"] : $default;
+
       // convert some form data
-      if ($prop == 'debug_level') {
-        $val = 0;
-        if (is_array($value))
+      if ($prop == 'debug_level' && !$is_default) {
+        if (is_array($value)) {
+          $val = 0;
           foreach ($value as $dbgval)
             $val += intval($dbgval);
-        $value = $val;
+          $value = $val;
+        }
       }
       else if ($which == 'db' && $prop == 'db_dsnw' && !empty($_POST['_dbtype'])) {
         if ($_POST['_dbtype'] == 'sqlite')
           $value = sprintf('%s://%s?mode=0646', $_POST['_dbtype'], $_POST['_dbname']{0} == '/' ? '/' . $_POST['_dbname'] : $_POST['_dbname']);
-        else
+        else if ($_POST['_dbtype'])
           $value = sprintf('%s://%s:%s@%s/%s', $_POST['_dbtype'], 
             rawurlencode($_POST['_dbuser']), rawurlencode($_POST['_dbpass']), $_POST['_dbhost'], $_POST['_dbname']);
       }
@@ -160,7 +183,7 @@
         if (count($value) <= 1)
           $value = $value[0];
       }
-      else if ($prop == 'pagesize') {
+      else if ($prop == 'mail_pagesize' || $prop == 'addressbook_pagesize') {
         $value = max(2, intval($value));
       }
       else if ($prop == 'smtp_user' && !empty($_POST['_smtp_user_u'])) {
@@ -169,16 +192,17 @@
       else if ($prop == 'smtp_pass' && !empty($_POST['_smtp_user_u'])) {
         $value = '%p';
       }
-      else if ($prop == 'default_imap_folders'){
-	$value = Array();
-	foreach($this->config['default_imap_folders'] as $_folder){
-	  switch($_folder) {
-	  case 'Drafts': $_folder = $this->config['drafts_mbox']; break;
-	  case 'Sent':   $_folder = $this->config['sent_mbox']; break;
-	  case 'Junk':   $_folder = $this->config['junk_mbox']; break;
-	  case 'Trash':  $_folder = $this->config['trash_mbox']; break;
+      else if ($prop == 'default_folders') {
+        $value = array();
+        foreach ($this->config['default_folders'] as $_folder) {
+          switch ($_folder) {
+          case 'Drafts': $_folder = $this->config['drafts_mbox']; break;
+          case 'Sent':   $_folder = $this->config['sent_mbox']; break;
+          case 'Junk':   $_folder = $this->config['junk_mbox']; break;
+          case 'Trash':  $_folder = $this->config['trash_mbox']; break;
           }
-	  if (!in_array($_folder, $value))  $value[] = $_folder;
+        if (!in_array($_folder, $value))
+          $value[] = $_folder;
         }
       }
       else if (is_bool($default)) {
@@ -187,9 +211,9 @@
       else if (is_numeric($value)) {
         $value = intval($value);
       }
-      
+
       // skip this property
-      if (!$force && ($value == $default))
+      if (!$force && !$this->configured && ($value == $default))
         continue;
 
       // save change
@@ -198,7 +222,7 @@
       // replace the matching line in config file
       $out = preg_replace(
         '/(\$rcmail_config\[\''.preg_quote($prop).'\'\])\s+=\s+(.+);/Uie',
-        "'\\1 = ' . rcube_install::_dump_var(\$value) . ';'",
+        "'\\1 = ' . rcube_install::_dump_var(\$value, \$prop) . ';'",
         $out);
     }
 
@@ -217,14 +241,14 @@
     $this->config = array();
     $this->load_defaults();
     $defaults = $this->config;
-    
+
     $this->load_config();
     if (!$this->configured)
       return null;
-    
+
     $out = $seen = array();
     $required = array_flip($this->required_config);
-    
+
     // iterate over the current configuration
     foreach ($this->config as $prop => $value) {
       if ($replacement = $this->replaced_config[$prop]) {
@@ -236,10 +260,10 @@
         $seen[$prop] = true;
       }
     }
-    
+
     // iterate over default config
     foreach ($defaults as $prop => $value) {
-      if (!isset($seen[$prop]) && !isset($this->config[$prop]) && isset($required[$prop]))
+      if (!isset($seen[$prop]) && isset($required[$prop]) && !(is_bool($this->config[$prop]) || strlen($this->config[$prop])))
         $out['missing'][] = array('prop' => $prop);
     }
 
@@ -251,12 +275,12 @@
       }
       else if (!empty($this->config['spellcheck_languages'])) {
         foreach ($this->config['spellcheck_languages'] as $lang => $descr)
-          if (!pspell_new($lang))
+          if (!@pspell_new($lang))
             $out['dependencies'][] = array('prop' => 'spellcheck_languages',
               'explain' => "You are missing pspell support for language $lang ($descr)");
       }
     }
-    
+
     if ($this->config['log_driver'] == 'syslog') {
       if (!function_exists('openlog')) {
         $out['dependencies'][] = array('prop' => 'log_driver',
@@ -267,7 +291,7 @@
           'explain' => 'Using <tt>syslog</tt> for logging requires a syslog ID to be configured');
       }
     }
-    
+
     // check ldap_public sources having global_search enabled
     if (is_array($this->config['ldap_public']) && !is_array($this->config['autocomplete_addressbooks'])) {
       foreach ($this->config['ldap_public'] as $ldap_public) {
@@ -277,11 +301,11 @@
         }
       }
     }
-    
+
     return $out;
   }
-  
-  
+
+
   /**
    * Merge the current configuration with the defaults
    * and copy replaced values to the new options.
@@ -291,8 +315,8 @@
     $current = $this->config;
     $this->config = array();
     $this->load_defaults();
-    
-    foreach ($this->replaced_config as $prop => $replacement)
+
+    foreach ($this->replaced_config as $prop => $replacement) {
       if (isset($current[$prop])) {
         if ($prop == 'skin_path')
           $this->config[$replacement] = preg_replace('#skins/(\w+)/?$#', '\\1', $current[$prop]);
@@ -300,14 +324,14 @@
           $this->config[$replacement] = $current[$prop] ? 2 : 0;
         else
           $this->config[$replacement] = $current[$prop];
-        
-        unset($current[$prop]);
+      }
+      unset($current[$prop]);
     }
-    
+
     foreach ($this->obsolete_config as $prop) {
       unset($current[$prop]);
     }
-    
+
     // add all ldap_public sources having global_search enabled to autocomplete_addressbooks
     if (is_array($current['ldap_public'])) {
       foreach ($current['ldap_public'] as $key => $ldap_public) {
@@ -317,14 +341,14 @@
         }
       }
     }
-    
+
     $this->config  = array_merge($this->config, $current);
-    
+
     foreach ((array)$current['ldap_public'] as $key => $values) {
       $this->config['ldap_public'][$key] = $current['ldap_public'][$key];
     }
   }
-  
+
   /**
    * Compare the local database schema with the reference schema
    * required for this version of Roundcube
@@ -336,113 +360,54 @@
   {
     if (!$this->configured)
       return false;
-    
-    // simple ad hand-made db schema
-    $db_schema = array(
-      'users' => array(),
-      'identities' => array(),
-      'contacts' => array(),
-      'contactgroups' => array(),
-      'contactgroupmembers' => array(),
-      'cache' => array(),
-      'messages' => array(),
-      'session' => array(),
-    );
-    
+
+    // read reference schema from mysql.initial.sql
+    $db_schema = $this->db_read_schema(INSTALL_PATH . 'SQL/mysql.initial.sql');
     $errors = array();
-    
+
     // check list of tables
     $existing_tables = $DB->list_tables();
 
     foreach ($db_schema as $table => $cols) {
       $table = !empty($this->config['db_table_'.$table]) ? $this->config['db_table_'.$table] : $table;
-      if (!in_array($table, $existing_tables))
-        $errors[] = "Missing table ".$table;
-      // TODO: check cols and indices
+      if (!in_array($table, $existing_tables)) {
+        $errors[] = "Missing table '".$table."'";
+      }
+      else {  // compare cols
+        $db_cols = $DB->list_cols($table);
+        $diff = array_diff(array_keys($cols), $db_cols);
+        if (!empty($diff))
+          $errors[] = "Missing columns in table '$table': " . join(',', $diff);
+      }
     }
-    
+
     return !empty($errors) ? $errors : false;
   }
-  
-  /**
-   * Compare the local database schema with the reference schema
-   * required for this version of Roundcube
-   *
-   * @param boolean True if the schema schould be updated
-   * @return boolean True if the schema is up-to-date, false if not or an error occured
-   */
-  function mdb2_schema_check($update = false)
-  {
-    if (!$this->configured)
-      return false;
-    
-    $options = array(
-      'use_transactions' => false,
-      'log_line_break' => "\n",
-      'idxname_format' => '%s',
-      'debug' => false,
-      'quote_identifier' => true,
-      'force_defaults' => false,
-      'portability' => true
-    );
-    
-    $dsnw = $this->config['db_dsnw'];
-    $schema = MDB2_Schema::factory($dsnw, $options);
-    $schema->db->supported['transactions'] = false;
-    
-    if (PEAR::isError($schema)) {
-      $this->raise_error(array('code' => $schema->getCode(), 'message' => $schema->getMessage() . ' ' . $schema->getUserInfo()));
-      return false;
-    }
-    else {
-      $definition = $schema->getDefinitionFromDatabase();
-      $definition['charset'] = 'utf8';
-      
-      if (PEAR::isError($definition)) {
-        $this->raise_error(array('code' => $definition->getCode(), 'message' => $definition->getMessage() . ' ' . $definition->getUserInfo()));
-        return false;
-      }
-      
-      // load reference schema
-      $dsn_arr = MDB2::parseDSN($this->config['db_dsnw']);
 
-      $ref_schema = INSTALL_PATH . 'SQL/' . $dsn_arr['phptype'] . '.schema.xml';
-      
-      if (is_readable($ref_schema)) {
-        $reference = $schema->parseDatabaseDefinition($ref_schema, false, array(), $schema->options['fail_on_invalid_names']);
-        
-        if (PEAR::isError($reference)) {
-          $this->raise_error(array('code' => $reference->getCode(), 'message' => $reference->getMessage() . ' ' . $reference->getUserInfo()));
-        }
-        else {
-          $diff = $schema->compareDefinitions($reference, $definition);
-          
-          if (empty($diff)) {
-            return true;
-          }
-          else if ($update) {
-            // update database schema with the diff from the above check
-            $success = $schema->alterDatabase($reference, $definition, $diff);
-            
-            if (PEAR::isError($success)) {
-              $this->raise_error(array('code' => $success->getCode(), 'message' => $success->getMessage() . ' ' . $success->getUserInfo()));
-            }
-            else
-              return true;
-          }
-          echo '<pre>'; var_dump($diff); echo '</pre>';
-          return false;
+  /**
+   * Utility function to read database schema from an .sql file
+   */
+  private function db_read_schema($schemafile)
+  {
+    $lines = file($schemafile);
+    $table_block = false;
+    $schema = array();
+    foreach ($lines as $line) {
+      if (preg_match('/^\s*create table `?([a-z0-9_]+)`?/i', $line, $m)) {
+        $table_block = $m[1];
+      }
+      else if ($table_block && preg_match('/^\s*`?([a-z0-9_-]+)`?\s+([a-z]+)/', $line, $m)) {
+        $col = $m[1];
+        if (!in_array(strtoupper($col), array('PRIMARY','KEY','INDEX','UNIQUE','CONSTRAINT','REFERENCES','FOREIGN'))) {
+          $schema[$table_block][$col] = $m[2];
         }
       }
-      else
-        $this->raise_error(array('message' => "Could not find reference schema file ($ref_schema)"));
-        return false;
     }
-    
-    return false;
+
+    return $schema;
   }
-  
-  
+
+
   /**
    * Getter for the last error message
    *
@@ -452,8 +417,8 @@
   {
       return $this->last_error['message'];
   }
-  
-  
+
+
   /**
    * Return a list with all imap hosts configured
    *
@@ -463,16 +428,50 @@
   {
     $default_hosts = (array)$this->getprop('default_host');
     $out = array();
-    
+
     foreach ($default_hosts as $key => $name) {
       if (!empty($name))
         $out[] = rcube_parse_host(is_numeric($key) ? $name : $key);
     }
-    
+
     return $out;
   }
-  
-  
+
+  /**
+   * Create a HTML dropdown to select a previous version of Roundcube
+   */
+  function versions_select($attrib = array())
+  {
+    $select = new html_select($attrib);
+    $select->add(array(
+        '0.1-stable', '0.1.1',
+        '0.2-alpha', '0.2-beta', '0.2-stable',
+        '0.3-stable', '0.3.1',
+        '0.4-beta', '0.4.2',
+        '0.5-beta', '0.5', '0.5.1',
+        '0.6-beta', '0.6',
+        '0.7-beta', '0.7', '0.7.1', '0.7.2', '0.7.3',
+        '0.8-beta', '0.8-rc', '0.8.0', '0.8.1', '0.8.2', '0.8.3', '0.8.4',
+        '0.9-beta',
+    ));
+    return $select;
+  }
+
+  /**
+   * Return a list with available subfolders of the skin directory
+   */
+  function list_skins()
+  {
+    $skins = array();
+    $skindir = INSTALL_PATH . 'skins/';
+    foreach (glob($skindir . '*') as $path) {
+      if (is_dir($path) && is_readable($path)) {
+        $skins[] = substr($path, strlen($skindir));
+      }
+    }
+    return $skins;
+  }
+
   /**
    * Display OK status
    *
@@ -484,8 +483,8 @@
     echo Q($name) . ':&nbsp; <span class="success">OK</span>';
     $this->_showhint($message);
   }
-  
-  
+
+
   /**
    * Display an error status and increase failure count
    *
@@ -496,7 +495,7 @@
   function fail($name, $message = '', $url = '')
   {
     $this->failures++;
-    
+
     echo Q($name) . ':&nbsp; <span class="fail">NOT OK</span>';
     $this->_showhint($message, $url);
   }
@@ -514,8 +513,8 @@
     echo Q($name) . ':&nbsp; <span class="na">NOT OK</span>';
     $this->_showhint($message, $url);
   }
-  
-  
+
+
   /**
    * Display warning status
    *
@@ -528,24 +527,24 @@
     echo Q($name) . ':&nbsp; <span class="na">NOT AVAILABLE</span>';
     $this->_showhint($message, $url);
   }
-  
-  
+
+
   function _showhint($message, $url = '')
   {
     $hint = Q($message);
-    
+
     if ($url)
       $hint .= ($hint ? '; ' : '') . 'See <a href="' . Q($url) . '" target="_blank">' . Q($url) . '</a>';
-      
+
     if ($hint)
       echo '<span class="indent">(' . $hint . ')</span>';
   }
-  
-  
+
+
   static function _clean_array($arr)
   {
     $out = array();
-    
+
     foreach (array_unique($arr) as $k => $val) {
       if (!empty($val)) {
         if (is_numeric($k))
@@ -554,12 +553,27 @@
           $out[$k] = $val;
       }
     }
-    
+
     return $out;
   }
-  
-  
-  static function _dump_var($var) {
+
+
+  static function _dump_var($var, $name=null) {
+    // special values
+    switch ($name) {
+    case 'syslog_facility':
+      $list = array(32 => 'LOG_AUTH', 80 => 'LOG_AUTHPRIV', 72 => ' LOG_CRON',
+                    24 => 'LOG_DAEMON', 0 => 'LOG_KERN', 128 => 'LOG_LOCAL0',
+                    136 => 'LOG_LOCAL1', 144 => 'LOG_LOCAL2', 152 => 'LOG_LOCAL3',
+                    160 => 'LOG_LOCAL4', 168 => 'LOG_LOCAL5', 176 => 'LOG_LOCAL6',
+                    184 => 'LOG_LOCAL7', 48 => 'LOG_LPR', 16 => 'LOG_MAIL',
+                    56 => 'LOG_NEWS', 40 => 'LOG_SYSLOG', 8 => 'LOG_USER', 64 => 'LOG_UUCP');
+      if ($val = $list[$var])
+        return $val;
+      break;
+    }
+
+
     if (is_array($var)) {
       if (empty($var)) {
         return 'array()';
@@ -572,16 +586,16 @@
             break;
           }
         }
-        
+
         if ($isnum)
           return 'array(' . join(', ', array_map(array('rcube_install', '_dump_var'), $var)) . ')';
       }
     }
-    
+
     return var_export($var, true);
   }
-  
-  
+
+
   /**
    * Initialize the database with the according schema
    *
@@ -590,31 +604,18 @@
    */
   function init_db($DB)
   {
-    $db_map = array('pgsql' => 'postgres', 'mysqli' => 'mysql');
-    $engine = isset($db_map[$DB->db_provider]) ? $db_map[$DB->db_provider] : $DB->db_provider;
-    
+    $engine = isset($this->db_map[$DB->db_provider]) ? $this->db_map[$DB->db_provider] : $DB->db_provider;
+
     // read schema file from /SQL/*
-    $fname = "../SQL/$engine.initial.sql";
-    if ($lines = @file($fname, FILE_SKIP_EMPTY_LINES)) {
-      $buff = '';
-      foreach ($lines as $i => $line) {
-        if (preg_match('/^--/', $line))
-          continue;
-          
-        $buff .= $line . "\n";
-        if (preg_match('/;$/', trim($line))) {
-          $DB->query($buff);
-          $buff = '';
-          if ($this->get_error())
-            break;
-        }
-      }
+    $fname = INSTALL_PATH . "SQL/$engine.initial.sql";
+    if ($sql = @file_get_contents($fname)) {
+      $this->exec_sql($sql, $DB);
     }
     else {
       $this->fail('DB Schema', "Cannot read the schema file: $fname");
       return false;
     }
-    
+
     if ($err = $this->get_error()) {
       $this->fail('DB Schema', "Error creating database schema: $err");
       return false;
@@ -622,7 +623,51 @@
 
     return true;
   }
-  
+
+
+  /**
+   * Update database schema
+   *
+   * @param string Version to update from
+   *
+   * @return boolen True on success, False on error
+   */
+  function update_db($version)
+  {
+    system(INSTALL_PATH . "bin/updatedb.sh --label=roundcube --version=" . $version
+      . " --dir=" . INSTALL_PATH . "SQL", $result);
+
+    return !$result;
+  }
+
+
+  /**
+   * Execute the given SQL queries on the database connection
+   *
+   * @param string SQL queries to execute
+   * @param object rcube_db Database connection
+   * @return boolen True on success, False on error
+   */
+  function exec_sql($sql, $DB)
+  {
+    $buff = '';
+    foreach (explode("\n", $sql) as $line) {
+      if (preg_match('/^--/', $line) || trim($line) == '')
+        continue;
+
+      $buff .= $line . "\n";
+      if (preg_match('/(;|^GO)$/', trim($line))) {
+        $DB->query($buff);
+        $buff = '';
+        if ($DB->is_error())
+          break;
+      }
+    }
+
+    return !$DB->is_error();
+  }
+
+
   /**
    * Handler for Roundcube errors
    */
@@ -630,8 +675,8 @@
   {
       $this->last_error = $p;
   }
-  
-  
+
+
   /**
    * Generarte a ramdom string to be used as encryption key
    *
@@ -643,12 +688,12 @@
   {
     $alpha = 'ABCDEFGHIJKLMNOPQERSTUVXYZabcdefghijklmnopqrtsuvwxyz0123456789+*%&?!$-_=';
     $out = '';
-    
+
     for ($i=0; $i < $length; $i++)
       $out .= $alpha{rand(0, strlen($alpha)-1)};
-    
+
     return $out;
   }
-  
+
 }
 

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