From 617b4f699f2e47991c50e05528b1f9ecbc3c3d9c Mon Sep 17 00:00:00 2001
From: svncommit <devs@roundcube.net>
Date: Tue, 12 May 2009 09:26:07 -0400
Subject: [PATCH] Minimize chance of race condition in session handling (#1485659, #1484678)

---
 program/include/rcmail.php |   75 ++++++++++++++++++++++---------------
 1 files changed, 45 insertions(+), 30 deletions(-)

diff --git a/program/include/rcmail.php b/program/include/rcmail.php
index 71601b5..45b59ae 100644
--- a/program/include/rcmail.php
+++ b/program/include/rcmail.php
@@ -37,6 +37,7 @@
   public $db;
   public $imap;
   public $output;
+  public $plugins;
   public $task = 'mail';
   public $action = '';
   public $comm_path = './';
@@ -88,9 +89,9 @@
       $syslog_facility = $this->config->get('syslog_facility', LOG_USER);
       openlog($syslog_id, LOG_ODELAY, $syslog_facility);
     }
-    				
+
     // set task and action properties
-    $this->set_task(strip_quotes(get_input_value('_task', RCUBE_INPUT_GPC)));
+    $this->set_task(get_input_value('_task', RCUBE_INPUT_GPC));
     $this->action = asciiwords(get_input_value('_action', RCUBE_INPUT_GPC));
 
     // connect to database
@@ -123,7 +124,7 @@
 
     // reset some session parameters when changing task
     if ($_SESSION['task'] != $this->task)
-      unset($_SESSION['page']);
+      rcube_sess_unset('page');
 
     // set current task to session
     $_SESSION['task'] = $this->task;
@@ -131,6 +132,9 @@
     // create IMAP object
     if ($this->task == 'mail')
       $this->imap_init();
+      
+    // create plugin API and load plugins
+    $this->plugins = rcube_plugin_api::get_instance();
   }
   
   
@@ -141,14 +145,12 @@
    */
   public function set_task($task)
   {
-    if (!in_array($task, self::$main_tasks))
-      $task = 'mail';
-    
-    $this->task = $task;
-    $this->comm_path = $this->url(array('task' => $task));
+    $task = asciiwords($task);
+    $this->task = $task ? $task : 'mail';
+    $this->comm_path = $this->url(array('task' => $this->task));
     
     if ($this->output)
-      $this->output->set_env('task', $task);
+      $this->output->set_env('task', $this->task);
   }
   
   
@@ -255,9 +257,18 @@
     $contacts = null;
     $ldap_config = (array)$this->config->get('ldap_public');
     $abook_type = strtolower($this->config->get('address_book_type'));
+
+    $plugin = $this->plugins->exec_hook('get_address_book', array('id' => $id, 'writeable' => $writeable));
     
-    if ($id && $ldap_config[$id]) {
+    // plugin returned instance of a rcube_addressbook
+    if ($plugin['instance'] instanceof rcube_addressbook) {
+      $contacts = $plugin['instance'];
+    }
+    else if ($id && $ldap_config[$id]) {
       $contacts = new rcube_ldap($ldap_config[$id]);
+    }
+    else if ($id === '0') {
+      $contacts = new rcube_contacts($this->db, $this->user->ID);
     }
     else if ($abook_type == 'ldap') {
       // Use the first writable LDAP address book.
@@ -358,13 +369,9 @@
     $options = array(
       'imap' => $this->config->get('imap_auth_type', 'check'),
       'delimiter' => isset($_SESSION['imap_delimiter']) ? $_SESSION['imap_delimiter'] : $this->config->get('imap_delimiter'),
+      'rootdir' => isset($_SESSION['imap_root']) ? $_SESSION['imap_root'] : $this->config->get('imap_root'),
     );
-    
-    if (isset($_SESSION['imap_root']))
-      $options['rootdir'] = $_SESSION['imap_root'];
-    else if ($imap_root = $this->config->get('imap_root'))
-      $options['rootdir'] = $imap_root;
-    
+
     $this->imap->set_options($options);
   
     // set global object for backward compatibility
@@ -436,11 +443,13 @@
     if ($a_host['host']) {
       $host = $a_host['host'];
       $imap_ssl = (isset($a_host['scheme']) && in_array($a_host['scheme'], array('ssl','imaps','tls'))) ? $a_host['scheme'] : null;
-      $imap_port = isset($a_host['port']) ? $a_host['port'] : ($imap_ssl ? 993 : $config['default_port']);
+      if(!empty($a_host['port']))
+        $imap_port = $a_host['port'];
+      else if ($imap_ssl && $imap_ssl != 'tls')
+        $imap_port = 993;
     }
-    else
-      $imap_port = $config['default_port'];
-
+    
+    $imap_port = $imap_port ? $imap_port : $config['default_port'];
 
     /* Modify username with domain if required  
        Inspired by Marco <P0L0_notspam_binware.org>
@@ -596,7 +605,7 @@
    * @param mixed Named parameters array or label name
    * @return string Localized text
    */
-  public function gettext($attrib)
+  public function gettext($attrib, $domain=null)
   {
     // load localization files if not done yet
     if (empty($this->texts))
@@ -611,9 +620,12 @@
 
     $command_name = !empty($attrib['command']) ? $attrib['command'] : NULL;
     $alias = $attrib['name'] ? $attrib['name'] : ($command_name && $command_label_map[$command_name] ? $command_label_map[$command_name] : '');
-
+    
+    // check for text with domain
+    if ($domain && ($text_item = $this->texts[$domain.'.'.$alias]))
+      ;
     // text does not exist
-    if (!($text_item = $this->texts[$alias])) {
+    else if (!($text_item = $this->texts[$alias])) {
       /*
       raise_error(array(
         'code' => 500,
@@ -675,7 +687,7 @@
    *
    * @param string Language ID
    */
-  public function load_language($lang = null)
+  public function load_language($lang = null, $add = array())
   {
     $lang = $this->language_prop(($lang ? $lang : $_SESSION['language']));
     
@@ -705,6 +717,10 @@
       
       $_SESSION['language'] = $lang;
     }
+
+    // append additional texts (from plugin)
+    if (is_array($add) && !empty($add))
+      $this->texts += $add;
   }
 
 
@@ -918,18 +934,17 @@
   {
     if (!is_array($p))
       $p = array('_action' => @func_get_arg(0));
-
-    if (!$p['task'] || !in_array($p['task'], rcmail::$main_tasks))
-      $p['task'] = $this->task;
-
-    $p['_task'] = $p['task'];
+    
+    $task = $p['_task'] ? $p['_task'] : ($p['task'] ? $p['task'] : $this->task);
+    $p['_task'] = $task;
     unset($p['task']);
 
     $url = './';
     $delm = '?';
-    foreach (array_reverse($p) as $par => $val)
+    foreach (array_reverse($p) as $key => $val)
     {
       if (!empty($val)) {
+        $par = $key[0] == '_' ? $key : '_'.$key;
         $url .= $delm.urlencode($par).'='.urlencode($val);
         $delm = '&';
       }

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