Horde_SyncMl_ContentHandler::handleHeader PHP Method

    public function handleHeader(&$hdr)
    {
        if (is_object($this->_wbxmlparser)) {
            /* The WBXML parser only knows about the charset once parsing is
             * started. So setup charset now. */
            $this->_xmlWriter->output->setVersion($this->_wbxmlparser->getVersion());
            $this->_xmlWriter->output->setCharset($this->_wbxmlparser->getCharsetStr());
            $GLOBALS['backend']->setCharset($this->_wbxmlparser->getCharsetStr());
        }
        /* Start the session. */
        $hdr->setupState();
        $state = $GLOBALS['backend']->state;
        $state->wbxml = $this->_xmlWriter->isWBXML();
        /* Check auth. */
        if (!$state->authenticated) {
            $auth = $GLOBALS['backend']->checkAuthentication($hdr->user, $hdr->credData, $hdr->credFormat, $hdr->credType);
            if ($auth !== false) {
                $state->authenticated = true;
                $statuscode = Horde_SyncMl::RESPONSE_AUTHENTICATION_ACCEPTED;
                $state->user = $auth;
                $GLOBALS['backend']->setUser($auth);
            } else {
                if (!$hdr->credData) {
                    $statuscode = Horde_SyncMl::RESPONSE_CREDENTIALS_MISSING;
                } else {
                    $statuscode = Horde_SyncMl::RESPONSE_INVALID_CREDENTIALS;
                }
                $GLOBALS['backend']->logMessage('Invalid authentication', 'DEBUG');
            }
        } else {
            $statuscode = Horde_SyncMl::RESPONSE_OK;
            $GLOBALS['backend']->setUser($state->user);
        }
        /* Create <SyncML>. */
        $this->_xmlWriter->outputInit();
        /* Got the state; now write our SyncHdr header. */
        $this->_xmlWriter->outputHeader($this->_respURI);
        /* Creates <SyncBody>. */
        $this->_xmlWriter->outputBodyStart();
        /* Output status for SyncHdr. */
        $this->_xmlWriter->outputStatus('0', 'SyncHdr', $statuscode, $state->targetURI, $state->sourceURI);
        /* Debug logging string. */
        $str = 'Authenticated: ' . ($state->authenticated ? 'yes' : 'no') . '; version: ' . $state->getVerDTD() . '; message ID: ' . $state->messageID . '; source URI: ' . $state->sourceURI . '; target URI: ' . $state->targetURI . '; user: ' . $state->user . '; charset: ' . $GLOBALS['backend']->getCharset() . '; wbxml: ' . ($state->wbxml ? 'yes' : 'no');
        $GLOBALS['backend']->logMessage($str, 'DEBUG');
    }