PhabricatorController.php
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Created: Thu, May 9, 19:03

PhabricatorController.php
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	<?php

	abstract class PhabricatorController extends AphrontController {

	private $handles;

	public function shouldRequireLogin() {
	return true;
	}

	public function shouldRequireAdmin() {
	return false;
	}

	public function shouldRequireEnabledUser() {
	return true;
	}

	public function shouldAllowPublic() {
	return false;
	}

	public function shouldAllowPartialSessions() {
	return false;
	}

	public function shouldRequireEmailVerification() {
	return PhabricatorUserEmail::isEmailVerificationRequired();
	}

	public function shouldAllowRestrictedParameter($parameter_name) {
	return false;
	}

	public function shouldRequireMultiFactorEnrollment() {
	if (!$this->shouldRequireLogin()) {
	return false;
	}

	if (!$this->shouldRequireEnabledUser()) {
	return false;
	}

	if ($this->shouldAllowPartialSessions()) {
	return false;
	}

	$user = $this->getRequest()->getUser();
	if (!$user->getIsStandardUser()) {
	return false;
	}

	return PhabricatorEnv::getEnvConfig('security.require-multi-factor-auth');
	}

	public function willBeginExecution() {
	$request = $this->getRequest();

	if ($request->getUser()) {
	// NOTE: Unit tests can set a user explicitly. Normal requests are not
	// permitted to do this.
	PhabricatorTestCase::assertExecutingUnitTests();
	$user = $request->getUser();
	} else {
	$user = new PhabricatorUser();
	$session_engine = new PhabricatorAuthSessionEngine();

	$phsid = $request->getCookie(PhabricatorCookies::COOKIE_SESSION);
	if (strlen($phsid)) {
	$session_user = $session_engine->loadUserForSession(
	PhabricatorAuthSession::TYPE_WEB,
	$phsid);
	if ($session_user) {
	$user = $session_user;
	}
	} else {
	// If the client doesn't have a session token, generate an anonymous
	// session. This is used to provide CSRF protection to logged-out users.
	$phsid = $session_engine->establishSession(
	PhabricatorAuthSession::TYPE_WEB,
	null,
	$partial = false);

	// This may be a resource request, in which case we just don't set
	// the cookie.
	if ($request->canSetCookies()) {
	$request->setCookie(PhabricatorCookies::COOKIE_SESSION, $phsid);
	}
	}


	if (!$user->isLoggedIn()) {
	$user->attachAlternateCSRFString(PhabricatorHash::digest($phsid));
	}

	$request->setUser($user);
	}

	$translation = $user->getTranslation();
	if ($translation &&
	$translation != PhabricatorEnv::getEnvConfig('translation.provider')) {
	$translation = newv($translation, array());
	PhutilTranslator::getInstance()
	->setLanguage($translation->getLanguage())
	->addTranslations($translation->getTranslations());
	}

	$preferences = $user->loadPreferences();
	if (PhabricatorEnv::getEnvConfig('darkconsole.enabled')) {
	$dark_console = PhabricatorUserPreferences::PREFERENCE_DARK_CONSOLE;
	if ($preferences->getPreference($dark_console) \|\|
	PhabricatorEnv::getEnvConfig('darkconsole.always-on')) {
	$console = new DarkConsoleCore();
	$request->getApplicationConfiguration()->setConsole($console);
	}
	}

	// NOTE: We want to set up the user first so we can render a real page
	// here, but fire this before any real logic.
	$restricted = array(
	'code',
	);
	foreach ($restricted as $parameter) {
	if ($request->getExists($parameter)) {
	if (!$this->shouldAllowRestrictedParameter($parameter)) {
	throw new Exception(
	pht(
	'Request includes restricted parameter "%s", but this '.
	'controller ("%s") does not whitelist it. Refusing to '.
	'serve this request because it might be part of a redirection '.
	'attack.',
	$parameter,
	get_class($this)));
	}
	}
	}

	if ($this->shouldRequireEnabledUser()) {
	if ($user->isLoggedIn() && !$user->getIsApproved()) {
	$controller = new PhabricatorAuthNeedsApprovalController($request);
	return $this->delegateToController($controller);
	}
	if ($user->getIsDisabled()) {
	$controller = new PhabricatorDisabledUserController($request);
	return $this->delegateToController($controller);
	}
	}

	$event = new PhabricatorEvent(
	PhabricatorEventType::TYPE_CONTROLLER_CHECKREQUEST,
	array(
	'request' => $request,
	'controller' => $this,
	));
	$event->setUser($user);
	PhutilEventEngine::dispatchEvent($event);
	$checker_controller = $event->getValue('controller');
	if ($checker_controller != $this) {
	return $this->delegateToController($checker_controller);
	}

	$auth_class = 'PhabricatorApplicationAuth';
	$auth_application = PhabricatorApplication::getByClass($auth_class);

	// Require partial sessions to finish login before doing anything.
	if (!$this->shouldAllowPartialSessions()) {
	if ($user->hasSession() &&
	$user->getSession()->getIsPartial()) {
	$login_controller = new PhabricatorAuthFinishController($request);
	$this->setCurrentApplication($auth_application);
	return $this->delegateToController($login_controller);
	}
	}

	// Check if the user needs to configure MFA.
	$need_mfa = $this->shouldRequireMultiFactorEnrollment();
	$have_mfa = $user->getIsEnrolledInMultiFactor();
	if ($need_mfa && !$have_mfa) {
	// Check if the cache is just out of date. Otherwise, roadblock the user
	// and require MFA enrollment.
	$user->updateMultiFactorEnrollment();
	if (!$user->getIsEnrolledInMultiFactor()) {
	$mfa_controller = new PhabricatorAuthNeedsMultiFactorController(
	$request);
	$this->setCurrentApplication($auth_application);
	return $this->delegateToController($mfa_controller);
	}
	}

	if ($this->shouldRequireLogin()) {
	// This actually means we need either:
	// - a valid user, or a public controller; and
	// - permission to see the application.

	$allow_public = $this->shouldAllowPublic() &&
	PhabricatorEnv::getEnvConfig('policy.allow-public');

	// If this controller isn't public, and the user isn't logged in, require
	// login.
	if (!$allow_public && !$user->isLoggedIn()) {
	$login_controller = new PhabricatorAuthStartController($request);
	$this->setCurrentApplication($auth_application);
	return $this->delegateToController($login_controller);
	}

	if ($user->isLoggedIn()) {
	if ($this->shouldRequireEmailVerification()) {
	if (!$user->getIsEmailVerified()) {
	$controller = new PhabricatorMustVerifyEmailController($request);
	$this->setCurrentApplication($auth_application);
	return $this->delegateToController($controller);
	}
	}
	}

	// If the user doesn't have access to the application, don't let them use
	// any of its controllers. We query the application in order to generate
	// a policy exception if the viewer doesn't have permission.

	$application = $this->getCurrentApplication();
	if ($application) {
	id(new PhabricatorApplicationQuery())
	->setViewer($user)
	->withPHIDs(array($application->getPHID()))
	->executeOne();
	}
	}

	// NOTE: We do this last so that users get a login page instead of a 403
	// if they need to login.
	if ($this->shouldRequireAdmin() && !$user->getIsAdmin()) {
	return new Aphront403Response();
	}

	}

	public function buildStandardPageView() {
	$view = new PhabricatorStandardPageView();
	$view->setRequest($this->getRequest());
	$view->setController($this);
	return $view;
	}

	public function buildStandardPageResponse($view, array $data) {
	$page = $this->buildStandardPageView();
	$page->appendChild($view);
	$response = new AphrontWebpageResponse();
	$response->setContent($page->render());
	return $response;
	}

	public function getApplicationURI($path = '') {
	if (!$this->getCurrentApplication()) {
	throw new Exception('No application!');
	}
	return $this->getCurrentApplication()->getApplicationURI($path);
	}

	public function buildApplicationPage($view, array $options) {
	$page = $this->buildStandardPageView();

	$title = PhabricatorEnv::getEnvConfig('phabricator.serious-business') ?
	'Phabricator' :
	pht('Bacon Ice Cream for Breakfast');

	$application = $this->getCurrentApplication();
	$page->setTitle(idx($options, 'title', $title));
	if ($application) {
	$page->setApplicationName($application->getName());
	if ($application->getTitleGlyph()) {
	$page->setGlyph($application->getTitleGlyph());
	}
	}

	if (!($view instanceof AphrontSideNavFilterView)) {
	$nav = new AphrontSideNavFilterView();
	$nav->appendChild($view);
	$view = $nav;
	}

	$user = $this->getRequest()->getUser();
	$view->setUser($user);

	$page->appendChild($view);

	$object_phids = idx($options, 'pageObjects', array());
	if ($object_phids) {
	$page->appendPageObjects($object_phids);
	foreach ($object_phids as $object_phid) {
	PhabricatorFeedStoryNotification::updateObjectNotificationViews(
	$user,
	$object_phid);
	}
	}

	if (idx($options, 'device')) {
	$page->setDeviceReady(true);
	}

	$page->setShowChrome(idx($options, 'chrome', true));

	$application_menu = $this->buildApplicationMenu();
	if ($application_menu) {
	$page->setApplicationMenu($application_menu);
	}

	$response = new AphrontWebpageResponse();
	return $response->setContent($page->render());
	}

	public function didProcessRequest($response) {
	// If a bare DialogView is returned, wrap it in a DialogResponse.
	if ($response instanceof AphrontDialogView) {
	$response = id(new AphrontDialogResponse())->setDialog($response);
	}

	$request = $this->getRequest();
	$response->setRequest($request);

	$seen = array();
	while ($response instanceof AphrontProxyResponse) {

	$hash = spl_object_hash($response);
	if (isset($seen[$hash])) {
	$seen[] = get_class($response);
	throw new Exception(
	'Cycle while reducing proxy responses: '.
	implode(' -> ', $seen));
	}
	$seen[$hash] = get_class($response);

	$response = $response->reduceProxyResponse();
	}

	if ($response instanceof AphrontDialogResponse) {
	if (!$request->isAjax()) {
	$dialog = $response->getDialog();

	$title = $dialog->getTitle();
	$short = $dialog->getShortTitle();

	$crumbs = $this->buildApplicationCrumbs();
	$crumbs->addTextCrumb(coalesce($short, $title));

	$page_content = array(
	$crumbs,
	$response->buildResponseString(),
	);

	$view = id(new PhabricatorStandardPageView())
	->setRequest($request)
	->setController($this)
	->setTitle($title)
	->appendChild($page_content);

	$response = id(new AphrontWebpageResponse())
	->setContent($view->render())
	->setHTTPResponseCode($response->getHTTPResponseCode());
	} else {
	$response->getDialog()->setIsStandalone(true);

	return id(new AphrontAjaxResponse())
	->setContent(array(
	'dialog' => $response->buildResponseString(),
	));
	}
	} else if ($response instanceof AphrontRedirectResponse) {
	if ($request->isAjax()) {
	return id(new AphrontAjaxResponse())
	->setContent(
	array(
	'redirect' => $response->getURI(),
	));
	}
	}

	return $response;
	}

	protected function getHandle($phid) {
	if (empty($this->handles[$phid])) {
	throw new Exception(
	"Attempting to access handle which wasn't loaded: {$phid}");
	}
	return $this->handles[$phid];
	}

	protected function loadHandles(array $phids) {
	$phids = array_filter($phids);
	$this->handles = $this->loadViewerHandles($phids);
	return $this;
	}

	protected function getLoadedHandles() {
	return $this->handles;
	}

	protected function loadViewerHandles(array $phids) {
	return id(new PhabricatorHandleQuery())
	->setViewer($this->getRequest()->getUser())
	->withPHIDs($phids)
	->execute();
	}


	/**
	* Render a list of links to handles, identified by PHIDs. The handles must
	* already be loaded.
	*
	* @param list<phid> List of PHIDs to render links to.
	* @param string Style, one of "\n" (to put each item on its own line)
	* or "," (to list items inline, separated by commas).
	* @return string Rendered list of handle links.
	*/
	protected function renderHandlesForPHIDs(array $phids, $style = "\n") {
	$style_map = array(
	"\n" => phutil_tag('br'),
	',' => ', ',
	);

	if (empty($style_map[$style])) {
	throw new Exception("Unknown handle list style '{$style}'!");
	}

	return implode_selected_handle_links($style_map[$style],
	$this->getLoadedHandles(),
	array_filter($phids));
	}

	protected function buildApplicationMenu() {
	return null;
	}

	protected function buildApplicationCrumbs() {

	$crumbs = array();

	$application = $this->getCurrentApplication();
	if ($application) {
	$sprite = $application->getIconName();
	if (!$sprite) {
	$sprite = 'application';
	}

	$crumbs[] = id(new PhabricatorCrumbView())
	->setHref($this->getApplicationURI())
	->setAural($application->getName())
	->setIcon($sprite);
	}

	$view = new PhabricatorCrumbsView();
	foreach ($crumbs as $crumb) {
	$view->addCrumb($crumb);
	}

	return $view;
	}

	protected function hasApplicationCapability($capability) {
	return PhabricatorPolicyFilter::hasCapability(
	$this->getRequest()->getUser(),
	$this->getCurrentApplication(),
	$capability);
	}

	protected function requireApplicationCapability($capability) {
	PhabricatorPolicyFilter::requireCapability(
	$this->getRequest()->getUser(),
	$this->getCurrentApplication(),
	$capability);
	}

	protected function explainApplicationCapability(
	$capability,
	$positive_message,
	$negative_message) {

	$can_act = $this->hasApplicationCapability($capability);
	if ($can_act) {
	$message = $positive_message;
	$icon_name = 'fa-play-circle-o lightgreytext';
	} else {
	$message = $negative_message;
	$icon_name = 'fa-lock';
	}

	$icon = id(new PHUIIconView())
	->setIconFont($icon_name);

	require_celerity_resource('policy-css');

	$phid = $this->getCurrentApplication()->getPHID();
	$explain_uri = "/policy/explain/{$phid}/{$capability}/";

	$message = phutil_tag(
	'div',
	array(
	'class' => 'policy-capability-explanation',
	),
	array(
	$icon,
	javelin_tag(
	'a',
	array(
	'href' => $explain_uri,
	'sigil' => 'workflow',
	),
	$message),
	));

	return array($can_act, $message);
	}

	public function getDefaultResourceSource() {
	return 'phabricator';
	}


	/**
	* Create a new @{class:AphrontDialogView} with defaults filled in.
	*
	* @return AphrontDialogView New dialog.
	*/
	protected function newDialog() {
	$submit_uri = new PhutilURI($this->getRequest()->getRequestURI());
	$submit_uri = $submit_uri->getPath();

	return id(new AphrontDialogView())
	->setUser($this->getRequest()->getUser())
	->setSubmitURI($submit_uri);
	}

	}

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