/**
* If this is a xajax request, call the requested PHP function, build the response and send it back to the browser
*
* This is the main server side engine for xajax.
* It handles all the incoming requests, including the firing of events and handling of the response.
* If your RequestURI is the same as your web page, then this function should be called before ANY
* headers or HTML is output from your script.
*
* This function may exit after the request is processed, if the 'core.exit_after' option is set to true.
*
* @return void
*
* @see <Xajax\Xajax->canProcessRequest>
*/
public function processRequest()
{
if (isset($_SERVER['HTTP_CHALLENGE_RESPONSE'])) {
$this->challengeResponse = $_SERVER['HTTP_CHALLENGE_RESPONSE'];
}
// Check to see if headers have already been sent out, in which case we can't do our job
if (headers_sent($filename, $linenumber)) {
echo $this->trans('errors.output.already-sent', array('location' => $filename . ':' . $linenumber)), "\n", $this->trans('errors.output.advice');
exit;
}
//
if (!$this->canProcessRequest()) {
return;
}
// Use xajax error handler if necessary
if ($this->getOption('core.error.handle')) {
$this->setErrorMessage('');
set_error_handler(array($this, "errorHandler"));
}
$bEndRequest = false;
$mResult = true;
// handle beforeProcessing event
if (isset($this->aProcessingEvents[self::PROCESSING_EVENT_BEFORE])) {
$xResponse = $this->aProcessingEvents[self::PROCESSING_EVENT_BEFORE]->call(array(&$bEndRequest));
if ($xResponse instanceof Response\Response) {
$this->xResponseManager->append($xResponse);
}
}
if (!$bEndRequest) {
$mResult = $this->xPluginManager->processRequest();
}
// Clean the processing buffer
if ($this->getOption('core.process.clean_buffer')) {
$er = error_reporting(0);
while (ob_get_level() > 0) {
ob_end_clean();
}
error_reporting($er);
}
if ($mResult === true) {
// handle afterProcessing event
if (isset($this->aProcessingEvents[self::PROCESSING_EVENT_AFTER])) {
$bEndRequest = false;
$xResponse = $this->aProcessingEvents[self::PROCESSING_EVENT_AFTER]->call(array($bEndRequest));
if ($xResponse instanceof Response\Response) {
$this->xResponseManager->append($xResponse);
}
}
} else {
if (is_string($mResult)) {
// $mResult contains an error message
// the request was missing the cooresponding handler function
// or an error occurred while attempting to execute the
// handler. replace the response, if one has been started
// and send a debug message.
$this->xResponseManager->clear();
$this->xResponseManager->append(new Response\Response());
// handle invalidRequest event
if (isset($this->aProcessingEvents[self::PROCESSING_EVENT_INVALID])) {
$xResponse = $this->aProcessingEvents[self::PROCESSING_EVENT_INVALID]->call($mResult);
if ($xResponse instanceof Response\Response) {
$this->xResponseManager->append($xResponse);
}
}
$this->xResponseManager->debug($mResult);
}
}
if ($this->sErrorMessage && $this->getOption('core.error.handle') && $this->hasOption('core.error.log_file')) {
if (($fH = @fopen($this->getOption('core.error.log_file'), "a")) != null) {
fwrite($fH, $this->trans('errors.debug.ts-message', array('timestamp' => strftime("%b %e %Y %I:%M:%S %p"), 'message' => $this->sErrorMessage)));
fclose($fH);
} else {
$this->xResponseManager->debug($this->trans('errors.debug.write-log', array('file' => $this->getOption('core.error.log_file'))));
}
$this->xResponseManager->debug($this->trans('errors.debug.message', array('message' => $this->sErrorMessage)));
}
$this->xResponseManager->send();
if ($this->getOption('core.error.handle')) {
restore_error_handler();
}
if ($this->getOption('core.process.exit_after')) {
exit;
}
}