PhabricatorDebugController.php
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	<?php

	/**
	* This controller eases debugging of application problems that don't repro
	* locally by allowing installs to add arbitrary debugging code easily. To use
	* it:
	*
	* - Write some diagnostic script.
	* - Instruct the user to install it in `/support/debug.php`.
	* - Tell them to visit `/debug/`.
	*/
	final class PhabricatorDebugController extends PhabricatorController {

	public function shouldRequireLogin() {
	return false;
	}

	public function processRequest() {
	if (!Filesystem::pathExists($this->getDebugFilePath())) {
	return new Aphront404Response();
	}

	$request = $this->getRequest();
	$user = $request->getUser();

	ob_start();
	require_once $this->getDebugFilePath();
	$out = ob_get_clean();

	$response = new AphrontWebpageResponse();
	$response->setContent(phutil_tag('pre', array(), $out));
	return $response;
	}

	private function getDebugFilePath() {
	$root = dirname(phutil_get_library_root('phabricator'));
	return $root.'/support/debug.php';
	}
	}