Differential D18896 Diff 45343 src/applications/auth/engine/PhabricatorAuthPasswordEngine.php

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Standalone View

src/applications/auth/engine/PhabricatorAuthPasswordEngine.php

This file was added.

				<?php

				final class PhabricatorAuthPasswordEngine
				extends Phobject {

				private $viewer;
				private $contentSource;
				private $object;
				private $passwordType;
				private $upgradeHashers = true;

				public function setViewer(PhabricatorUser $viewer) {
				$this->viewer = $viewer;
				return $this;
				}

				public function getViewer() {
				return $this->viewer;
				}

				public function setContentSource(PhabricatorContentSource $content_source) {
				$this->contentSource = $content_source;
				return $this;
				}

				public function getContentSource() {
				return $this->contentSource;
				}

				public function setObject($object) {
				$this->object = $object;
				return $this;
				}

				public function getObject() {
				return $this->object;
				}

				public function setPasswordType($password_type) {
				$this->passwordType = $password_type;
				return $this;
				}

				public function getPasswordType() {
				return $this->passwordType;
				}

				public function setUpgradeHashers($upgrade_hashers) {
				$this->upgradeHashers = $upgrade_hashers;
				return $this;
				}

				public function getUpgradeHashers() {
				return $this->upgradeHashers;
				}

				public function isValidPassword(PhutilOpaqueEnvelope $envelope) {
				$this->requireSetup();

				$password_type = $this->getPasswordType();

				$passwords = $this->newQuery()
				->withPasswordTypes(array($password_type))
				->withIsRevoked(false)
				->execute();

				$matches = $this->getMatches($envelope, $passwords);
				if (!$matches) {
				return false;
				}

				if ($this->shouldUpgradeHashers()) {
				$this->upgradeHashers($envelope, $matches);
				}

				return true;
				}

				public function isUniquePassword(PhutilOpaqueEnvelope $envelope) {
				$this->requireSetup();

				$password_type = $this->getPasswordType();

				// To test that the password is unique, we're loading all active and
				// revoked passwords for all roles for the given user, then throwing out
				// the active passwords for the current role (so a password can't
				// collide with itself).

				// Note that two different objects can have the same password (say,
				// users @alice and @bailey). We're only preventing @alice from using
				// the same password for everything.

				$passwords = $this->newQuery()
				->execute();

				foreach ($passwords as $key => $password) {
				$same_type = ($password->getPasswordType() === $password_type);
				$is_active = !$password->getIsRevoked();

				if ($same_type && $is_active) {
				unset($passwords[$key]);
				}
				}

				$matches = $this->getMatches($envelope, $passwords);

				return !$matches;
				}

				public function isRevokedPassword(PhutilOpaqueEnvelope $envelope) {
				$this->requireSetup();

				// To test if a password is revoked, we're loading all revoked passwords
				// across all roles for the given user. If a password was revoked in one
				// role, you can't reuse it in a different role.

				$passwords = $this->newQuery()
				->withIsRevoked(true)
				->execute();

				$matches = $this->getMatches($envelope, $passwords);

				return (bool)$matches;
				}

				private function requireSetup() {
				if (!$this->getObject()) {
				throw new PhutilInvalidStateException('setObject');
				}

				if (!$this->getPasswordType()) {
				throw new PhutilInvalidStateException('setPasswordType');
				}

				if (!$this->getViewer()) {
				throw new PhutilInvalidStateException('setViewer');
				}

				if ($this->shouldUpgradeHashers()) {
				if (!$this->getContentSource()) {
				throw new PhutilInvalidStateException('setContentSource');
				}
				}
				}

				private function shouldUpgradeHashers() {
				if (!$this->getUpgradeHashers()) {
				return false;
				}

				if (PhabricatorEnv::isReadOnly()) {
				// Don't try to upgrade hashers if we're in read-only mode, since we
				// won't be able to write the new hash to the database.
				return false;
				}

				return true;
				}

				private function newQuery() {
				$viewer = $this->getViewer();
				$object = $this->getObject();
				$password_type = $this->getPasswordType();

				return id(new PhabricatorAuthPasswordQuery())
				->setViewer($viewer)
				->withObjectPHIDs(array($object->getPHID()));
				}

				private function getMatches(
				PhutilOpaqueEnvelope $envelope,
				array $passwords) {

				$object = $this->getObject();

				$matches = array();
				foreach ($passwords as $password) {
				try {
				$is_match = $password->comparePassword($envelope, $object);
				} catch (PhabricatorPasswordHasherUnavailableException $ex) {
				$is_match = false;
				}

				if ($is_match) {
				$matches[] = $password;
				}
				}

				return $matches;
				}

				private function upgradeHashers(
				PhutilOpaqueEnvelope $envelope,
				array $passwords) {

				assert_instances_of($passwords, 'PhabricatorAuthPassword');

				$need_upgrade = array();
				foreach ($passwords as $password) {
				if (!$password->canUpgrade()) {
				continue;
				}
				$need_upgrade[] = $password;
				}

				if (!$need_upgrade) {
				return;
				}

				$upgrade_type = PhabricatorAuthPasswordUpgradeTransaction::TRANSACTIONTYPE;
				$viewer = $this->getViewer();
				$content_source = $this->getContentSource();

				$unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
				foreach ($need_upgrade as $password) {

				// This does the actual upgrade. We then apply a transaction to make
				// the upgrade more visible and auditable.
				$old_hasher = $password->getHasher();
				$password->upgradePasswordHasher($envelope, $this->getObject());
				$new_hasher = $password->getHasher();

				$xactions = array();

				$xactions[] = $password->getApplicationTransactionTemplate()
				->setTransactionType($upgrade_type)
				->setOldValue($old_hasher->getHashName())
				->setNewValue($new_hasher->getHashName());

				$editor = $password->getApplicationTransactionEditor()
				->setActor($viewer)
				->setContinueOnNoEffect(true)
				->setContinueOnMissingFields(true)
				->setContentSource($content_source)
				->applyTransactions($password, $xactions);
				}
				unset($unguarded);
				}

				}