index.php
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	<?php

	$phabricator_root = dirname(dirname(__FILE__));
	require_once $phabricator_root.'/support/PhabricatorStartup.php';

	// If the preamble script exists, load it.
	$preamble_path = $phabricator_root.'/support/preamble.php';
	if (file_exists($preamble_path)) {
	require_once $preamble_path;
	}

	PhabricatorStartup::didStartup();

	$show_unexpected_traces = false;
	try {
	PhabricatorStartup::loadCoreLibraries();

	PhabricatorEnv::initializeWebEnvironment();
	$show_unexpected_traces = PhabricatorEnv::getEnvConfig(
	'phabricator.developer-mode');

	// This is the earliest we can get away with this, we need env config first.
	PhabricatorAccessLog::init();
	$access_log = PhabricatorAccessLog::getLog();
	PhabricatorStartup::setGlobal('log.access', $access_log);
	$access_log->setData(
	array(
	'R' => AphrontRequest::getHTTPHeader('Referer', '-'),
	'r' => idx($_SERVER, 'REMOTE_ADDR', '-'),
	'M' => idx($_SERVER, 'REQUEST_METHOD', '-'),
	));

	DarkConsoleXHProfPluginAPI::hookProfiler();
	DarkConsoleErrorLogPluginAPI::registerErrorHandler();

	$sink = new AphrontPHPHTTPSink();

	$response = PhabricatorSetupCheck::willProcessRequest();
	if ($response) {
	PhabricatorStartup::endOutputCapture();
	$sink->writeResponse($response);
	return;
	}

	$host = AphrontRequest::getHTTPHeader('Host');
	$path = $_REQUEST['__path__'];

	switch ($host) {
	default:
	$config_key = 'aphront.default-application-configuration-class';
	$application = PhabricatorEnv::newObjectFromConfig($config_key);
	break;
	}

	$application->setHost($host);
	$application->setPath($path);
	$application->willBuildRequest();
	$request = $application->buildRequest();

	// Until an administrator sets "phabricator.base-uri", assume it is the same
	// as the request URI. This will work fine in most cases, it just breaks down
	// when daemons need to do things.
	$request_protocol = ($request->isHTTPS() ? 'https' : 'http');
	$request_base_uri = "{$request_protocol}://{$host}/";
	PhabricatorEnv::setRequestBaseURI($request_base_uri);

	$write_guard = new AphrontWriteGuard(array($request, 'validateCSRF'));

	$application->setRequest($request);
	list($controller, $uri_data) = $application->buildController();

	$access_log->setData(
	array(
	'U' => (string)$request->getRequestURI()->getPath(),
	'C' => get_class($controller),
	));

	// If execution throws an exception and then trying to render that exception
	// throws another exception, we want to show the original exception, as it is
	// likely the root cause of the rendering exception.
	$original_exception = null;
	try {
	$response = $controller->willBeginExecution();

	if ($request->getUser() && $request->getUser()->getPHID()) {
	$access_log->setData(
	array(
	'u' => $request->getUser()->getUserName(),
	'P' => $request->getUser()->getPHID(),
	));
	}

	if (!$response) {
	$controller->willProcessRequest($uri_data);
	$response = $controller->processRequest();
	}
	} catch (Exception $ex) {
	$original_exception = $ex;
	$response = $application->handleException($ex);
	}

	try {
	$response = $controller->didProcessRequest($response);
	$response = $application->willSendResponse($response, $controller);
	$response->setRequest($request);

	$unexpected_output = PhabricatorStartup::endOutputCapture();
	if ($unexpected_output) {
	$unexpected_output = "Unexpected output:\n\n{$unexpected_output}";
	phlog($unexpected_output);

	if ($response instanceof AphrontWebpageResponse) {
	echo phutil_tag(
	'div',
	array('style' =>
	'background: #eeddff;'.
	'white-space: pre-wrap;'.
	'z-index: 200000;'.
	'position: relative;'.
	'padding: 8px;'.
	'font-family: monospace'),
	$unexpected_output);
	}
	}

	$sink->writeResponse($response);
	} catch (Exception $ex) {
	$write_guard->dispose();
	$access_log->write();
	if ($original_exception) {
	$ex = new PhutilAggregateException(
	"Multiple exceptions during processing and rendering.",
	array(
	$original_exception,
	$ex,
	));
	}
	PhabricatorStartup::didEncounterFatalException(
	'Rendering Exception',
	$ex,
	$show_unexpected_traces);
	}

	$write_guard->dispose();

	$access_log->setData(
	array(
	'c' => $response->getHTTPResponseCode(),
	'T' => PhabricatorStartup::getMicrosecondsSinceStart(),
	));

	DarkConsoleXHProfPluginAPI::saveProfilerSample($access_log);

	// Add points to the rate limits for this request.
	if (isset($_SERVER['REMOTE_ADDR'])) {
	$user_ip = $_SERVER['REMOTE_ADDR'];

	// The base score for a request allows users to make 30 requests per
	// minute.
	$score = (1000 / 30);

	// If the user was logged in, let them make more requests.
	if ($request->getUser() && $request->getUser()->getPHID()) {
	$score = $score / 5;
	}

	PhabricatorStartup::addRateLimitScore($user_ip, $score);
	}

	} catch (Exception $ex) {
	PhabricatorStartup::didEncounterFatalException(
	'Core Exception',
	$ex,
	$show_unexpected_traces);
	}

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