From 2f8b1036da42ec3d15a51c6b17a473f9f4df71d3 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <bruederli@kolabsys.com>
Date: Sat, 07 Feb 2015 12:33:24 -0500
Subject: [PATCH] Bump version and copyright year

---
 program/lib/Roundcube/rcube.php |  188 ++++++++++++++++++++++++++++++++++++++++------
 1 files changed, 163 insertions(+), 25 deletions(-)

diff --git a/program/lib/Roundcube/rcube.php b/program/lib/Roundcube/rcube.php
index e3e26d8..819c7f8 100644
--- a/program/lib/Roundcube/rcube.php
+++ b/program/lib/Roundcube/rcube.php
@@ -28,8 +28,14 @@
  */
 class rcube
 {
-    const INIT_WITH_DB = 1;
+    // Init options
+    const INIT_WITH_DB      = 1;
     const INIT_WITH_PLUGINS = 2;
+
+    // Request status
+    const REQUEST_VALID       = 0;
+    const REQUEST_ERROR_URL   = 1;
+    const REQUEST_ERROR_TOKEN = 2;
 
     /**
      * Singleton instace of rcube
@@ -101,6 +107,12 @@
      */
     public $user;
 
+    /**
+     * Request status
+     *
+     * @var int
+     */
+    public $request_status = 0;
 
     /* private/protected vars */
     protected $texts;
@@ -389,8 +401,12 @@
 
         $this->storage->set_options($options);
         $this->set_storage_prop();
-    }
 
+        // subscribe to 'storage_connected' hook for session logging
+        if ($this->config->get('imap_log_session', false)) {
+            $this->plugins->register_hook('storage_connected', array($this, 'storage_log_session'));
+        }
+    }
 
     /**
      * Set storage parameters.
@@ -456,6 +472,16 @@
         }
     }
 
+
+    /**
+     * Callback for IMAP connection events to log session identifiers
+     */
+    public function storage_log_session($args)
+    {
+        if (!empty($args['session']) && session_id()) {
+            $this->write_log('imap_session', $args['session']);
+        }
+    }
 
     /**
      * Create session object and start the session.
@@ -828,6 +854,7 @@
          * upon decryption; see http://php.net/mcrypt_generic#68082
          */
         $clear = pack("a*H2", $clear, "80");
+        $ckey  = $this->config->get_crypto_key($key);
 
         if (function_exists('openssl_encrypt')) {
             $method = 'DES-EDE3-CBC';
@@ -839,7 +866,7 @@
             ($td = mcrypt_module_open(MCRYPT_TripleDES, "", MCRYPT_MODE_CBC, ""))
         ) {
             $iv = $this->create_iv(mcrypt_enc_get_iv_size($td));
-            mcrypt_generic_init($td, $this->config->get_crypto_key($key), $iv);
+            mcrypt_generic_init($td, $ckey, $iv);
             $cipher = $iv . mcrypt_generic($td, $clear);
             mcrypt_generic_deinit($td);
             mcrypt_module_close($td);
@@ -850,7 +877,7 @@
             if (function_exists('des')) {
                 $des_iv_size = 8;
                 $iv = $this->create_iv($des_iv_size);
-                $cipher = $iv . des($this->config->get_crypto_key($key), $clear, 1, 1, $iv);
+                $cipher = $iv . des($ckey, $clear, 1, 1, $iv);
             }
             else {
                 self::raise_error(array(
@@ -881,6 +908,7 @@
         }
 
         $cipher = $base64 ? base64_decode($cipher) : $cipher;
+        $ckey   = $this->config->get_crypto_key($key);
 
         if (function_exists('openssl_decrypt')) {
             $method  = 'DES-EDE3-CBC';
@@ -900,7 +928,7 @@
             ($td = mcrypt_module_open(MCRYPT_TripleDES, "", MCRYPT_MODE_CBC, ""))
         ) {
             $iv_size = mcrypt_enc_get_iv_size($td);
-            $iv = substr($cipher, 0, $iv_size);
+            $iv      = substr($cipher, 0, $iv_size);
 
             // session corruption? (#1485970)
             if (strlen($iv) < $iv_size) {
@@ -908,7 +936,7 @@
             }
 
             $cipher = substr($cipher, $iv_size);
-            mcrypt_generic_init($td, $this->config->get_crypto_key($key), $iv);
+            mcrypt_generic_init($td, $ckey, $iv);
             $clear = mdecrypt_generic($td, $cipher);
             mcrypt_generic_deinit($td);
             mcrypt_module_close($td);
@@ -918,15 +946,15 @@
 
             if (function_exists('des')) {
                 $des_iv_size = 8;
-                $iv = substr($cipher, 0, $des_iv_size);
+                $iv     = substr($cipher, 0, $des_iv_size);
                 $cipher = substr($cipher, $des_iv_size);
-                $clear = des($this->config->get_crypto_key($key), $cipher, 0, 1, $iv);
+                $clear  = des($ckey, $cipher, 0, 1, $iv);
             }
             else {
                 self::raise_error(array(
                     'code' => 500, 'type' => 'php',
                     'file' => __FILE__, 'line' => __LINE__,
-                    'message' => "Could not perform decryption; make sure Mcrypt is installed or lib/des.inc is available"
+                    'message' => "Could not perform decryption; make sure OpenSSL or Mcrypt or lib/des.inc is available"
                     ), true, true);
             }
         }
@@ -958,6 +986,104 @@
         }
 
         return $iv;
+    }
+
+
+    /**
+     * Returns session token for secure URLs
+     *
+     * @param bool $generate Generate token if not exists in session yet
+     *
+     * @return string|bool Token string, False when disabled
+     */
+    public function get_secure_url_token($generate = false)
+    {
+        if ($len = $this->config->get('use_secure_urls')) {
+            if (empty($_SESSION['secure_token']) && $generate) {
+                // generate x characters long token
+                $length = $len > 1 ? $len : 16;
+                $token  = openssl_random_pseudo_bytes($length / 2);
+                $token  = bin2hex($token);
+
+                $plugin = $this->plugins->exec_hook('secure_token',
+                    array('value' => $token, 'length' => $length));
+
+                $_SESSION['secure_token'] = $plugin['value'];
+            }
+
+            return $_SESSION['secure_token'];
+        }
+
+        return false;
+    }
+
+
+    /**
+     * Generate a unique token to be used in a form request
+     *
+     * @return string The request token
+     */
+    public function get_request_token()
+    {
+        $sess_id = $_COOKIE[ini_get('session.name')];
+        if (!$sess_id) {
+            $sess_id = session_id();
+        }
+
+        $plugin = $this->plugins->exec_hook('request_token', array(
+            'value' => md5('RT' . $this->get_user_id() . $this->config->get('des_key') . $sess_id)));
+
+        return $plugin['value'];
+    }
+
+
+    /**
+     * Check if the current request contains a valid token.
+     * Empty requests aren't checked until use_secure_urls is set.
+     *
+     * @param int Request method
+     *
+     * @return boolean True if request token is valid false if not
+     */
+    public function check_request($mode = rcube_utils::INPUT_POST)
+    {
+        // check secure token in URL if enabled
+        if ($token = $this->get_secure_url_token()) {
+            foreach (explode('/', preg_replace('/[?#&].*$/', '', $_SERVER['REQUEST_URI'])) as $tok) {
+                if ($tok == $token) {
+                    return true;
+                }
+            }
+
+            $this->request_status = self::REQUEST_ERROR_URL;
+
+            return false;
+        }
+
+        $sess_tok = $this->get_request_token();
+
+        // ajax requests
+        if (rcube_utils::request_header('X-Roundcube-Request') == $sess_tok) {
+            return true;
+        }
+
+        // skip empty requests
+        if (($mode == rcube_utils::INPUT_POST && empty($_POST))
+            || ($mode == rcube_utils::INPUT_GET && empty($_GET))
+        ) {
+            return true;
+        }
+
+        // default method of securing requests
+        $token   = rcube_utils::get_input_value('_token', $mode);
+        $sess_id = $_COOKIE[ini_get('session.name')];
+
+        if (empty($sess_id) || $token != $sess_tok) {
+            $this->request_status = self::REQUEST_ERROR_TOKEN;
+            return false;
+        }
+
+        return true;
     }
 
 
@@ -1138,8 +1264,12 @@
             $line = var_export($line, true);
         }
 
-        $date_format = self::$instance ? self::$instance->config->get('log_date_format') : null;
-        $log_driver  = self::$instance ? self::$instance->config->get('log_driver') : null;
+        $date_format = $log_driver = $session_key = null;
+        if (self::$instance) {
+            $date_format = self::$instance->config->get('log_date_format');
+            $log_driver  = self::$instance->config->get('log_driver');
+            $session_key = intval(self::$instance->config->get('log_session_id', 8));
+        }
 
         if (empty($date_format)) {
             $date_format = 'd-M-Y H:i:s O';
@@ -1158,8 +1288,8 @@
         }
 
         // add session ID to the log
-        if ($sess = session_id()) {
-            $line = '<' . substr($sess, 0, 8) . '> ' . $line;
+        if ($session_key > 0 && ($sess = session_id())) {
+            $line = '<' . substr($sess, 0, $session_key) . '> ' . $line;
         }
 
         if ($log_driver == 'syslog') {
@@ -1261,6 +1391,9 @@
             }
 
             exit(1);
+        }
+        else if ($cli) {
+            fwrite(STDERR, 'ERROR: ' . $arg['message']);
         }
     }
 
@@ -1528,7 +1661,7 @@
         // send thru SMTP server using custom SMTP library
         if ($this->config->get('smtp_server')) {
             // generate list of recipients
-            $a_recipients = array($mailto);
+            $a_recipients = (array) $mailto;
 
             if (strlen($headers['Cc']))
                 $a_recipients[] = $headers['Cc'];
@@ -1573,7 +1706,7 @@
             if (!$sent) {
                 self::raise_error(array('code' => 800, 'type' => 'smtp',
                     'line' => __LINE__, 'file' => __FILE__,
-                    'message' => "SMTP error: ".join("\n", $response)), TRUE, FALSE);
+                    'message' => join("\n", $response)), true, false);
             }
         }
         // send mail using PHP's mail() function
@@ -1628,19 +1761,24 @@
             // remove MDN headers after sending
             unset($headers['Return-Receipt-To'], $headers['Disposition-Notification-To']);
 
-            // get all recipients
-            if ($headers['Cc'])
-                $mailto .= $headers['Cc'];
-            if ($headers['Bcc'])
-                $mailto .= $headers['Bcc'];
-            if (preg_match_all('/<([^@]+@[^>]+)>/', $mailto, $m))
-                $mailto = implode(', ', array_unique($m[1]));
-
             if ($this->config->get('smtp_log')) {
+                // get all recipient addresses
+                if (is_array($mailto)) {
+                    $mailto = implode(',', $mailto);
+                }
+                if ($headers['Cc']) {
+                    $mailto .= ',' . $headers['Cc'];
+                }
+                if ($headers['Bcc']) {
+                    $mailto .= ',' . $headers['Bcc'];
+                }
+
+                $mailto = rcube_mime::decode_address_list($mailto, null, false, null, true);
+
                 self::write_log('sendmail', sprintf("User %s [%s]; Message for %s; %s",
                     $this->user->get_username(),
-                    $_SERVER['REMOTE_ADDR'],
-                    $mailto,
+                    rcube_utils::remote_addr(),
+                    implode(', ', $mailto),
                     !empty($response) ? join('; ', $response) : ''));
             }
         }

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