PhabricatorController.php
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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 shouldAllowLegallyNonCompliantUsers() {
	return false;
	}

	public function isGlobalDragAndDropUploadEnabled() {
	return false;
	}

	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 = $request->getCookie(PhabricatorCookies::COOKIE_SESSION);
	if (phutil_nonempty_string($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()) {
	$csrf = PhabricatorHash::digestWithNamedKey($phsid, 'csrf.alternate');
	$user->attachAlternateCSRFString($csrf);
	}

	$request->setUser($user);
	}

	id(new PhabricatorAuthSessionEngine())
	->willServeRequestForUser($user);

	if (PhabricatorEnv::getEnvConfig('darkconsole.enabled')) {
	$dark_console = PhabricatorDarkConsoleSetting::SETTINGKEY;
	if ($user->getUserSetting($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->getIsDisabled()) {
	$controller = new PhabricatorDisabledUserController();
	return $this->delegateToController($controller);
	}
	}

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

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

	// Require users sign Legalpad documents before we check if they have
	// MFA. If we don't do this, they can get stuck in a state where they
	// can't add MFA until they sign, and can't sign until they add MFA.
	// See T13024 and PHI223.
	$result = $this->requireLegalpadSignatures();
	if ($result !== null) {
	return $result;
	}

	// 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();
	$this->setCurrentApplication($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; and
	// - permission to see at least one Space if spaces are configured.

	$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();
	$this->setCurrentApplication($auth_application);
	return $this->delegateToController($login_controller);
	}

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

	// If Spaces are configured, require that the user have access to at
	// least one. If we don't do this, they'll get confusing error messages
	// later on.
	$spaces = PhabricatorSpacesNamespaceQuery::getSpacesExist();
	if ($spaces) {
	$viewer_spaces = PhabricatorSpacesNamespaceQuery::getViewerSpaces(
	$user);
	if (!$viewer_spaces) {
	$controller = new PhabricatorSpacesNoAccessController();
	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();
	}

	// If users need approval, require they wait here. We do this near the
	// end so they can take other actions (like verifying email, signing
	// documents, and enrolling in MFA) while waiting for an admin to take a
	// look at things. See T13024 for more discussion.
	if ($this->shouldRequireEnabledUser()) {
	if ($user->isLoggedIn() && !$user->getIsApproved()) {
	$controller = new PhabricatorAuthNeedsApprovalController();
	return $this->delegateToController($controller);
	}
	}
	}

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

	public function willSendResponse(AphrontResponse $response) {
	$request = $this->getRequest();

	if ($response instanceof AphrontDialogResponse) {
	if (!$request->isAjax() && !$request->isQuicksand()) {
	$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($this)
	->setDeviceReady(true)
	->setTitle($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() \|\| $request->isQuicksand()) {
	return id(new AphrontAjaxResponse())
	->setContent(
	array(
	'redirect' => $response->getURI(),
	'close' => $response->getCloseDialogBeforeRedirect(),
	));
	}
	}

	return $response;
	}

	/**
	* WARNING: Do not call this in new code.
	*
	* @deprecated See "Handles Technical Documentation".
	*/
	protected function loadViewerHandles(array $phids) {
	return id(new PhabricatorHandleQuery())
	->setViewer($this->getRequest()->getUser())
	->withPHIDs($phids)
	->execute();
	}

	public function buildApplicationMenu() {
	return null;
	}

	protected function buildApplicationCrumbs() {
	$crumbs = array();

	$application = $this->getCurrentApplication();
	if ($application) {
	$icon = $application->getIcon();
	if (!$icon) {
	$icon = 'fa-puzzle';
	}

	$crumbs[] = id(new PHUICrumbView())
	->setHref($this->getApplicationURI())
	->setName($application->getName())
	->setIcon($icon);
	}

	$view = new PHUICrumbsView();
	foreach ($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';
	}

	$icon = id(new PHUIIconView())
	->setIcon($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.
	*/
	public 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);
	}

	public function newRedirect() {
	return id(new AphrontRedirectResponse());
	}

	public function newPage() {
	$page = id(new PhabricatorStandardPageView())
	->setRequest($this->getRequest())
	->setController($this)
	->setDeviceReady(true);

	$application = $this->getCurrentApplication();
	if ($application) {
	$page->setApplicationName($application->getName());
	if ($application->getTitleGlyph()) {
	$page->setGlyph($application->getTitleGlyph());
	}
	}

	$viewer = $this->getRequest()->getUser();
	if ($viewer) {
	$page->setUser($viewer);
	}

	return $page;
	}

	public function newApplicationMenu() {
	return id(new PHUIApplicationMenuView())
	->setViewer($this->getViewer());
	}

	public function newCurtainView($object = null) {
	$viewer = $this->getViewer();

	$action_id = celerity_generate_unique_node_id();

	$action_list = id(new PhabricatorActionListView())
	->setViewer($viewer)
	->setID($action_id);

	// NOTE: Applications (objects of class PhabricatorApplication) can't
	// currently be set here, although they don't need any of the extensions
	// anyway. This should probably work differently than it does, though.
	if ($object) {
	if ($object instanceof PhabricatorLiskDAO) {
	$action_list->setObject($object);
	}
	}

	$curtain = id(new PHUICurtainView())
	->setViewer($viewer)
	->setActionList($action_list);

	if ($object) {
	$panels = PHUICurtainExtension::buildExtensionPanels($viewer, $object);
	foreach ($panels as $panel) {
	$curtain->addPanel($panel);
	}
	}

	return $curtain;
	}

	protected function buildTransactionTimeline(
	PhabricatorApplicationTransactionInterface $object,
	PhabricatorApplicationTransactionQuery $query = null,
	PhabricatorMarkupEngine $engine = null,
	$view_data = array()) {

	$request = $this->getRequest();
	$viewer = $this->getViewer();
	$xaction = $object->getApplicationTransactionTemplate();

	if (!$query) {
	$query = PhabricatorApplicationTransactionQuery::newQueryForObject(
	$object);
	if (!$query) {
	throw new Exception(
	pht(
	'Unable to find transaction query for object of class "%s".',
	get_class($object)));
	}
	}

	$pager = id(new AphrontCursorPagerView())
	->readFromRequest($request)
	->setURI(new PhutilURI(
	'/transactions/showolder/'.$object->getPHID().'/'));

	$xactions = $query
	->setViewer($viewer)
	->withObjectPHIDs(array($object->getPHID()))
	->needComments(true)
	->executeWithCursorPager($pager);
	$xactions = array_reverse($xactions);

	$timeline_engine = PhabricatorTimelineEngine::newForObject($object)
	->setViewer($viewer)
	->setTransactions($xactions)
	->setViewData($view_data);

	$view = $timeline_engine->buildTimelineView();

	if ($engine) {
	foreach ($xactions as $xaction) {
	if ($xaction->getComment()) {
	$engine->addObject(
	$xaction->getComment(),
	PhabricatorApplicationTransactionComment::MARKUP_FIELD_COMMENT);
	}
	}
	$engine->process();
	$view->setMarkupEngine($engine);
	}

	$timeline = $view
	->setPager($pager)
	->setQuoteTargetID($this->getRequest()->getStr('quoteTargetID'))
	->setQuoteRef($this->getRequest()->getStr('quoteRef'));

	return $timeline;
	}


	public function buildApplicationCrumbsForEditEngine() {
	// TODO: This is kind of gross, I'm basically just making this public so
	// I can use it in EditEngine. We could do this without making it public
	// by using controller delegation, or make it properly public.
	return $this->buildApplicationCrumbs();
	}

	private function requireLegalpadSignatures() {
	if (!$this->shouldRequireLogin()) {
	return null;
	}

	if ($this->shouldAllowLegallyNonCompliantUsers()) {
	return null;
	}

	$viewer = $this->getViewer();

	if (!$viewer->hasSession()) {
	return null;
	}

	$session = $viewer->getSession();
	if ($session->getIsPartial()) {
	// If the user hasn't made it through MFA yet, require they survive
	// MFA first.
	return null;
	}

	if ($session->getSignedLegalpadDocuments()) {
	return null;
	}

	if (!$viewer->isLoggedIn()) {
	return null;
	}

	$must_sign_docs = array();
	$sign_docs = array();

	$legalpad_class = 'PhabricatorLegalpadApplication';
	$legalpad_installed = PhabricatorApplication::isClassInstalledForViewer(
	$legalpad_class,
	$viewer);
	if ($legalpad_installed) {
	$sign_docs = id(new LegalpadDocumentQuery())
	->setViewer($viewer)
	->withSignatureRequired(1)
	->needViewerSignatures(true)
	->setOrder('oldest')
	->execute();

	foreach ($sign_docs as $sign_doc) {
	if (!$sign_doc->getUserSignature($viewer->getPHID())) {
	$must_sign_docs[] = $sign_doc;
	}
	}
	}

	if (!$must_sign_docs) {
	// If nothing needs to be signed (either because there are no documents
	// which require a signature, or because the user has already signed
	// all of them) mark the session as good and continue.
	$engine = id(new PhabricatorAuthSessionEngine())
	->signLegalpadDocuments($viewer, $sign_docs);

	return null;
	}

	$request = $this->getRequest();
	$request->setURIMap(
	array(
	'id' => head($must_sign_docs)->getID(),
	));

	$application = PhabricatorApplication::getByClass($legalpad_class);
	$this->setCurrentApplication($application);

	$controller = new LegalpadDocumentSignController();
	$controller->setIsSessionGate(true);
	return $this->delegateToController($controller);
	}

	}

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