From 63e7937d021ebd3aaa763f7e9a8403b22fec6a2c Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Thu, 10 Sep 2015 02:53:11 -0400
Subject: [PATCH] Change so rcube_message class does not depend on $_GET parameters

---
 program/lib/Roundcube/rcube.php |   83 +++++++++++++++++++++++------------------
 1 files changed, 46 insertions(+), 37 deletions(-)

diff --git a/program/lib/Roundcube/rcube.php b/program/lib/Roundcube/rcube.php
index 7452287..09c8f90 100644
--- a/program/lib/Roundcube/rcube.php
+++ b/program/lib/Roundcube/rcube.php
@@ -124,8 +124,8 @@
     /**
      * This implements the 'singleton' design pattern
      *
-     * @param integer Options to initialize with this instance. See rcube::INIT_WITH_* constants
-     * @param string Environment name to run (e.g. live, dev, test)
+     * @param integer $mode Options to initialize with this instance. See rcube::INIT_WITH_* constants
+     * @param string  $env  Environment name to run (e.g. live, dev, test)
      *
      * @return rcube The one and only instance
      */
@@ -810,26 +810,22 @@
     }
 
     /**
-     * Encrypt using 3DES
+     * Encrypt a string
      *
      * @param string  $clear  Clear text input
      * @param string  $key    Encryption key to retrieve from the configuration, defaults to 'des_key'
      * @param boolean $base64 Whether or not to base64_encode() the result before returning
      *
-     * @return string encrypted text
+     * @return string Encrypted text
      */
     public function encrypt($clear, $key = 'des_key', $base64 = true)
     {
-        if (!$clear) {
+        if (!is_string($clear) || !strlen($clear)) {
             return '';
         }
 
-        // Add a single canary byte to the end of the clear text, which
-        // will help find out how much of padding will need to be removed
-        // upon decryption; see http://php.net/mcrypt_generic#68082.
-        $clear  = pack("a*H2", $clear, "80");
         $ckey   = $this->config->get_crypto_key($key);
-        $method = 'DES-EDE3-CBC';
+        $method = $this->config->get_crypto_method();
         $opts   = defined('OPENSSL_RAW_DATA') ? OPENSSL_RAW_DATA : true;
         $iv     = rcube_utils::random_bytes(openssl_cipher_iv_length($method), true);
         $cipher = $iv . openssl_encrypt($clear, $method, $ckey, $opts, $iv);
@@ -838,13 +834,13 @@
     }
 
     /**
-     * Decrypt 3DES-encrypted string
+     * Decrypt a string
      *
      * @param string  $cipher Encrypted text
      * @param string  $key    Encryption key to retrieve from the configuration, defaults to 'des_key'
      * @param boolean $base64 Whether or not input is base64-encoded
      *
-     * @return string decrypted text
+     * @return string Decrypted text
      */
     public function decrypt($cipher, $key = 'des_key', $base64 = true)
     {
@@ -852,10 +848,9 @@
             return '';
         }
 
-        $cipher = $base64 ? base64_decode($cipher) : $cipher;
-        $ckey   = $this->config->get_crypto_key($key);
-
-        $method  = 'DES-EDE3-CBC';
+        $cipher  = $base64 ? base64_decode($cipher) : $cipher;
+        $ckey    = $this->config->get_crypto_key($key);
+        $method  = $this->config->get_crypto_method();
         $opts    = defined('OPENSSL_RAW_DATA') ? OPENSSL_RAW_DATA : true;
         $iv_size = openssl_cipher_iv_length($method);
         $iv      = substr($cipher, 0, $iv_size);
@@ -867,10 +862,6 @@
 
         $cipher = substr($cipher, $iv_size);
         $clear  = openssl_decrypt($cipher, $method, $ckey, $opts, $iv);
-
-        // Trim PHP's padding and the canary byte; see note in
-        // rcube::encrypt() and http://php.net/mcrypt_generic#68082
-        $clear = substr(rtrim($clear, "\0"), 0, -1);
 
         return $clear;
     }
@@ -909,15 +900,14 @@
      */
     public function get_request_token()
     {
-        $sess_id = $_COOKIE[ini_get('session.name')];
-        if (!$sess_id) {
-            $sess_id = session_id();
+        if (empty($_SESSION['request_token'])) {
+            $plugin = $this->plugins->exec_hook('request_token', array(
+                'value' => rcube_utils::random_bytes(32)));
+
+            $_SESSION['request_token'] = $plugin['value'];
         }
 
-        $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'];
+        return $_SESSION['request_token'];
     }
 
     /**
@@ -1560,8 +1550,7 @@
                 $a_recipients[] = $headers['Bcc'];
 
             // remove Bcc header and get the whole head of the message as string
-            $send_headers = array('Bcc' => null);
-            $smtp_headers = $message->txtHeaders($send_headers, true);
+            $smtp_headers = $this->message_head($message, array('Bcc'));
 
             if ($message->getParam('delay_file_io')) {
                 // use common temp dir
@@ -1601,15 +1590,13 @@
         }
         // send mail using PHP's mail() function
         else {
-            // unset some headers because they will be added by the mail() function
-            $headers_enc = $headers;
-            $headers_res = array('To' => null, 'Subject' => null);
-            $header_str  = $message->txtHeaders($headers_res, true);
+            // unset To,Subject headers because they will be added by the mail() function
+            $header_str = $this->message_head($message, array('To', 'Subject'));
 
             // #1485779
             if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
-                if (preg_match_all('/<([^@]+@[^>]+)>/', $headers_enc['To'], $m)) {
-                    $headers_enc['To'] = implode(', ', $m[1]);
+                if (preg_match_all('/<([^@]+@[^>]+)>/', $headers['To'], $m)) {
+                    $headers['To'] = implode(', ', $m[1]);
                 }
             }
 
@@ -1623,8 +1610,8 @@
             }
             else {
                 $delim   = $this->config->header_delimiter();
-                $to      = $headers_enc['To'];
-                $subject = $headers_enc['Subject'];
+                $to      = $headers['To'];
+                $subject = $headers['Subject'];
                 $header_str = rtrim($header_str);
 
                 if ($delim != "\r\n") {
@@ -1681,6 +1668,28 @@
 
         return $sent;
     }
+
+    /**
+     * Return message headers as a string
+     */
+    protected function message_head($message, $unset = array())
+    {
+        // Mail_mime >= 1.9.0
+        if (method_exists($message, 'isMultipart')) {
+            foreach ($unset as $header) {
+                $headers[$header] = null;
+            }
+        }
+        else {
+            $headers = $message->headers();
+            foreach ($unset as $header) {
+                unset($headers[$header]);
+            }
+            $message->_headers = array();
+        }
+
+        return $message->txtHeaders($headers, true);
+    }
 }
 
 

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