ZP-1240 HTML safe truncate streams containing HTML data.

Released under the Affero GNU General Public License (AGPL) version 3.

src/backend/kopano/mapiprovider.php

@@ -2437,11 +2437,13 @@ class MAPIProvider {
      * @return boolean
      */
     private function setMessageBodyForType($mapimessage, $bpReturnType, &$message) {
+        $truncateHtmlSafe = false;
         //default value is PR_BODY
         $property = PR_BODY;
         switch ($bpReturnType) {
             case SYNC_BODYPREFERENCE_HTML:
                 $property = PR_HTML;
+                $truncateHtmlSafe = true;
                 break;
             case SYNC_BODYPREFERENCE_RTF:
                 $property = PR_RTF_COMPRESSED;
@@ -2473,11 +2475,11 @@ class MAPIProvider {
             elseif (isset($message->internetcpid) && $bpReturnType == SYNC_BODYPREFERENCE_HTML) {
                 // if PR_HTML is UTF-8 we can stream it directly, else we have to convert to UTF-8 & wrap it
                 if (Utils::GetCodepageCharset($message->internetcpid) == "utf-8") {
-                    $message->asbody->data = MAPIStreamWrapper::Open($stream);
+                    $message->asbody->data = MAPIStreamWrapper::Open($stream, $truncateHtmlSafe);
                 }
                 else {
                     $body = $this->mapiReadStream($stream, $streamsize);
-                    $message->asbody->data = StringStreamWrapper::Open(Utils::ConvertCodepageStringToUtf8($message->internetcpid, $body));
+                    $message->asbody->data = StringStreamWrapper::Open(Utils::ConvertCodepageStringToUtf8($message->internetcpid, $body), $truncateHtmlSafe);
                     $message->internetcpid = INTERNET_CPID_UTF8;
                 }
             }