From 9bacb2cd3f7e8f96a29f651460954965c400aac6 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Fri, 28 Jun 2013 16:27:59 -0400
Subject: [PATCH] Prepare config migration: - Show warning in installer and hints how to migrate - Let update.sh create the new config file if legacy config is detected - Provide a sample config file for manual configuration - Define a list of options which always should be written to local config

---
 program/lib/Roundcube/rcube.php |  265 +++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 255 insertions(+), 10 deletions(-)

diff --git a/program/lib/Roundcube/rcube.php b/program/lib/Roundcube/rcube.php
index b681f05..8d17827 100644
--- a/program/lib/Roundcube/rcube.php
+++ b/program/lib/Roundcube/rcube.php
@@ -258,6 +258,39 @@
 
 
     /**
+     * Initialize and get shared cache object
+     *
+     * @param string $name   Cache identifier
+     * @param bool   $packed Enables/disables data serialization
+     *
+     * @return rcube_cache_shared Cache object
+     */
+    public function get_cache_shared($name, $packed=true)
+    {
+        $shared_name = "shared_$name";
+
+        if (!array_key_exists($shared_name, $this->caches)) {
+            $opt  = strtolower($name) . '_cache';
+            $type = $this->config->get($opt);
+            $ttl  = $this->config->get($opt . '_ttl');
+
+            if (!$type) {
+                // cache is disabled
+                return $this->caches[$shared_name] = null;
+            }
+
+            if ($ttl === null) {
+                $ttl = $this->config->get('shared_cache_ttl', '10d');
+            }
+
+            $this->caches[$shared_name] = new rcube_cache_shared($type, $name, $ttl, $packed);
+        }
+
+        return $this->caches[$shared_name];
+    }
+
+
+    /**
      * Create SMTP object and connect to server
      *
      * @param boolean True if connection should be established
@@ -424,22 +457,32 @@
         ini_set('session.name', $sess_name ? $sess_name : 'roundcube_sessid');
         ini_set('session.use_cookies', 1);
         ini_set('session.use_only_cookies', 1);
-        ini_set('session.serialize_handler', 'php');
         ini_set('session.cookie_httponly', 1);
 
         // use database for storing session data
         $this->session = new rcube_session($this->get_dbh(), $this->config);
 
-        $this->session->register_gc_handler(array($this, 'temp_gc'));
-        $this->session->register_gc_handler(array($this, 'cache_gc'));
-
+        $this->session->register_gc_handler(array($this, 'gc_handler'));
         $this->session->set_secret($this->config->get('des_key') . dirname($_SERVER['SCRIPT_NAME']));
         $this->session->set_ip_check($this->config->get('ip_check'));
 
         // start PHP session (if not in CLI mode)
         if ($_SERVER['REMOTE_ADDR']) {
-            session_start();
+            $this->session->start();
         }
+    }
+
+
+    /**
+     * Garbage collector - cache/temp cleaner
+     */
+    public function gc()
+    {
+        rcube_cache::gc();
+        rcube_cache_shared::gc();
+        $this->get_storage()->cache_gc();
+
+        $this->gc_temp();
     }
 
 
@@ -447,7 +490,7 @@
      * Garbage collector function for temp files.
      * Remove temp files older than two days
      */
-    public function temp_gc()
+    public function gc_temp()
     {
         $tmp = unslashify($this->config->get('temp_dir'));
         $expire = time() - 172800;  // expire in 48 hours
@@ -472,11 +515,30 @@
      * Garbage collector for cache entries.
      * Set flag to expunge caches on shutdown
      */
-    public function cache_gc()
+    public function gc_handler()
     {
         // because this gc function is called before storage is initialized,
         // we just set a flag to expunge storage cache on shutdown.
         $this->expunge_cache = true;
+    }
+
+
+    /**
+     * Runs garbage collector with probability based on
+     * session settings. This is intended for environments
+     * without a session.
+     */
+    public function gc_run()
+    {
+        $probability = (int) ini_get('session.gc_probability');
+        $divisor     = (int) ini_get('session.gc_divisor');
+
+        if ($divisor > 0 && $probability > 0) {
+            $random = mt_rand(1, $divisor);
+            if ($random <= $probability) {
+                $this->gc();
+            }
+        }
     }
 
 
@@ -864,6 +926,10 @@
             $this->smtp->disconnect();
         }
 
+        if ($this->expunge_cache) {
+            $this->gc();
+        }
+
         foreach ($this->caches as $cache) {
             if (is_object($cache)) {
                 $cache->close();
@@ -871,9 +937,6 @@
         }
 
         if (is_object($this->storage)) {
-            if ($this->expunge_cache) {
-                $this->storage->expunge_cache();
-            }
             $this->storage->close();
         }
     }
@@ -1291,6 +1354,188 @@
             return $_SESSION['language'];
         }
     }
+
+    /**
+     * Unique Message-ID generator.
+     *
+     * @return string Message-ID
+     */
+    public function gen_message_id()
+    {
+        $local_part  = md5(uniqid('rcube'.mt_rand(), true));
+        $domain_part = $this->user->get_username('domain');
+
+        // Try to find FQDN, some spamfilters doesn't like 'localhost' (#1486924)
+        if (!preg_match('/\.[a-z]+$/i', $domain_part)) {
+            foreach (array($_SERVER['HTTP_HOST'], $_SERVER['SERVER_NAME']) as $host) {
+                $host = preg_replace('/:[0-9]+$/', '', $host);
+                if ($host && preg_match('/\.[a-z]+$/i', $host)) {
+                    $domain_part = $host;
+                }
+            }
+        }
+
+        return sprintf('<%s@%s>', $local_part, $domain_part);
+    }
+
+    /**
+     * Send the given message using the configured method.
+     *
+     * @param object $message    Reference to Mail_MIME object
+     * @param string $from       Sender address string
+     * @param array  $mailto     Array of recipient address strings
+     * @param array  $error      SMTP error array (reference)
+     * @param string $body_file  Location of file with saved message body (reference),
+     *                           used when delay_file_io is enabled
+     * @param array  $options    SMTP options (e.g. DSN request)
+     *
+     * @return boolean Send status.
+     */
+    public function deliver_message(&$message, $from, $mailto, &$error, &$body_file = null, $options = null)
+    {
+        $plugin = $this->plugins->exec_hook('message_before_send', array(
+            'message' => $message,
+            'from'    => $from,
+            'mailto'  => $mailto,
+            'options' => $options,
+        ));
+
+        $from    = $plugin['from'];
+        $mailto  = $plugin['mailto'];
+        $options = $plugin['options'];
+        $message = $plugin['message'];
+        $headers = $message->headers();
+
+        // send thru SMTP server using custom SMTP library
+        if ($this->config->get('smtp_server')) {
+            // generate list of recipients
+            $a_recipients = array($mailto);
+
+            if (strlen($headers['Cc']))
+                $a_recipients[] = $headers['Cc'];
+            if (strlen($headers['Bcc']))
+                $a_recipients[] = $headers['Bcc'];
+
+            // clean Bcc from header for recipients
+            $send_headers = $headers;
+            unset($send_headers['Bcc']);
+            // here too, it because txtHeaders() below use $message->_headers not only $send_headers
+            unset($message->_headers['Bcc']);
+
+            $smtp_headers = $message->txtHeaders($send_headers, true);
+
+            if ($message->getParam('delay_file_io')) {
+                // use common temp dir
+                $temp_dir = $this->config->get('temp_dir');
+                $body_file = tempnam($temp_dir, 'rcmMsg');
+                if (PEAR::isError($mime_result = $message->saveMessageBody($body_file))) {
+                    self::raise_error(array('code' => 650, 'type' => 'php',
+                        'file' => __FILE__, 'line' => __LINE__,
+                        'message' => "Could not create message: ".$mime_result->getMessage()),
+                        TRUE, FALSE);
+                    return false;
+                }
+                $msg_body = fopen($body_file, 'r');
+            }
+            else {
+                $msg_body = $message->get();
+            }
+
+            // send message
+            if (!is_object($this->smtp)) {
+                $this->smtp_init(true);
+            }
+
+            $sent     = $this->smtp->send_mail($from, $a_recipients, $smtp_headers, $msg_body, $options);
+            $response = $this->smtp->get_response();
+            $error    = $this->smtp->get_error();
+
+            // log error
+            if (!$sent) {
+                self::raise_error(array('code' => 800, 'type' => 'smtp',
+                    'line' => __LINE__, 'file' => __FILE__,
+                    'message' => "SMTP error: ".join("\n", $response)), TRUE, FALSE);
+            }
+        }
+        // send mail using PHP's mail() function
+        else {
+            // unset some headers because they will be added by the mail() function
+            $headers_enc = $message->headers($headers);
+            $headers_php = $message->_headers;
+            unset($headers_php['To'], $headers_php['Subject']);
+
+            // reset stored headers and overwrite
+            $message->_headers = array();
+            $header_str = $message->txtHeaders($headers_php);
+
+            // #1485779
+            if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
+                if (preg_match_all('/<([^@]+@[^>]+)>/', $headers_enc['To'], $m)) {
+                    $headers_enc['To'] = implode(', ', $m[1]);
+                }
+            }
+
+            $msg_body = $message->get();
+
+            if (PEAR::isError($msg_body)) {
+                self::raise_error(array('code' => 650, 'type' => 'php',
+                    'file' => __FILE__, 'line' => __LINE__,
+                    'message' => "Could not create message: ".$msg_body->getMessage()),
+                    TRUE, FALSE);
+            }
+            else {
+                $delim   = $this->config->header_delimiter();
+                $to      = $headers_enc['To'];
+                $subject = $headers_enc['Subject'];
+                $header_str = rtrim($header_str);
+
+                if ($delim != "\r\n") {
+                    $header_str = str_replace("\r\n", $delim, $header_str);
+                    $msg_body   = str_replace("\r\n", $delim, $msg_body);
+                    $to         = str_replace("\r\n", $delim, $to);
+                    $subject    = str_replace("\r\n", $delim, $subject);
+                }
+
+                if (ini_get('safe_mode'))
+                    $sent = mail($to, $subject, $msg_body, $header_str);
+                else
+                    $sent = mail($to, $subject, $msg_body, $header_str, "-f$from");
+            }
+        }
+
+        if ($sent) {
+            $this->plugins->exec_hook('message_sent', array('headers' => $headers, 'body' => $msg_body));
+
+            // remove MDN headers after sending
+            unset($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')) {
+                self::write_log('sendmail', sprintf("User %s [%s]; Message for %s; %s",
+                    $this->user->get_username(),
+                    $_SERVER['REMOTE_ADDR'],
+                    $mailto,
+                    !empty($response) ? join('; ', $response) : ''));
+            }
+        }
+
+        if (is_resource($msg_body)) {
+            fclose($msg_body);
+        }
+
+        $message->_headers = array();
+        $message->headers($headers);
+
+        return $sent;
+    }
+
 }
 
 

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