Plugin API: added message_part_body hook, fixes around message structure handling by plugins

CHANGELOG

@@ -1,6 +1,7 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Plugin API: Added message_part_body hook
 - Add initdb.sh to create database from initial.sql script with prefix support (#1490188)
 - Plugin API: Add special onload() method to execute plugin actions before startup (session and GUI initialization)
 - Password plugin: Added 'kpasswd' driver by Peter Allgeyer

program/lib/Roundcube/rcube_imap.php

@@ -1957,6 +1957,16 @@ class rcube_imap extends rcube_storage
             for ($i=1; $i<count($part); $i++) {
                 if (!is_array($part[$i])) {
                     $struct->ctype_secondary = strtolower($part[$i]);
+
+                    // read content type parameters
+                    if (is_array($part[$i+1])) {
+                        $struct->ctype_parameters = array();
+                        for ($j=0; $j<count($part[$i+1]); $j+=2) {
+                            $param = strtolower($part[$i+1][$j]);
+                            $struct->ctype_parameters[$param] = $part[$i+1][$j+1];
+                        }
+                    }
+
                     break;
                 }
             }
@@ -2366,17 +2376,18 @@ class rcube_imap extends rcube_storage
      *
      * @param int      $uid  Message UID
      * @param resource $fp   File pointer to save the message
+     * @param string   $part Optional message part ID
      *
      * @return string Message source string
      */
-    public function get_raw_body($uid, $fp=null)
+    public function get_raw_body($uid, $fp=null, $part = null)
     {
         if (!$this->check_connection()) {
             return null;
         }
 
         return $this->conn->handlePartBody($this->folder, $uid,
-            true, null, null, false, $fp);
+            true, $part, null, false, $fp);
     }
 
 
@@ -2384,16 +2395,17 @@ class rcube_imap extends rcube_storage
      * Returns the message headers as string
      *
      * @param int    $uid  Message UID
+     * @param string $part Optional message part ID
      *
      * @return string Message headers string
      */
-    public function get_raw_headers($uid)
+    public function get_raw_headers($uid, $part = null)
     {
         if (!$this->check_connection()) {
             return null;
         }
 
-        return $this->conn->fetchPartHeader($this->folder, $uid, true);
+        return $this->conn->fetchPartHeader($this->folder, $uid, true, $part);
     }
 
 

program/lib/Roundcube/rcube_message.php

@@ -53,12 +53,12 @@ class rcube_message
     public $uid;
     public $folder;
     public $headers;
+    public $sender;
     public $parts        = array();
     public $mime_parts   = array();
     public $inline_parts = array();
     public $attachments  = array();
     public $subject      = '';
-    public $sender = null;
     public $is_safe      = false;
 
     const BODY_MAX_SIZE = 1048576; // 1MB
@@ -217,6 +217,10 @@ class rcube_message
             return;
         }
 
+        // allow plugins to modify part body
+        $plugin = $this->app->plugins->exec_hook('message_part_body',
+            array('object' => $this, 'part' => $part));
+
         // only text parts can be formatted
         $formatted = $formatted && $part->ctype_primary == 'text';
 
@@ -499,8 +503,9 @@ class rcube_message
                 $structure->headers = rcube_mime::parse_headers($headers);
             }
         }
-        else
+        else {
             $mimetype = $structure->mimetype;
+        }
 
         // show message headers
         if ($recursive && is_array($structure->headers) &&
@@ -516,11 +521,15 @@ class rcube_message
             array('object' => $this, 'structure' => $structure,
                 'mimetype' => $mimetype, 'recursive' => $recursive));
 
-        if ($plugin['abort'])
+        if ($plugin['abort']) {
             return;
+        }
 
         $structure = $plugin['structure'];
-        list($message_ctype_primary, $message_ctype_secondary) = explode('/', $plugin['mimetype']);
+        $mimetype  = $plugin['mimetype'];
+        $recursive = $plugin['recursive'];
+
+        list($message_ctype_primary, $message_ctype_secondary) = explode('/', $mimetype);
 
         // print body if message doesn't have multiple parts
         if ($message_ctype_primary == 'text' && !$recursive) {

program/lib/Roundcube/rcube_storage.php

@@ -494,20 +494,22 @@ abstract class rcube_storage
      *
      * @param int      $uid  Message UID
      * @param resource $fp   File pointer to save the message
+     * @param string   $part Optional message part ID
      *
      * @return string Message source string
      */
-    abstract function get_raw_body($uid, $fp = null);
+    abstract function get_raw_body($uid, $fp = null, $part = null);
 
 
     /**
      * Returns the message headers as string
      *
      * @param int    $uid  Message UID
+     * @param string $part Optional message part ID
      *
      * @return string Message headers string
      */
-    abstract function get_raw_headers($uid);
+    abstract function get_raw_headers($uid, $part = null);
 
 
     /**