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<?php namespace Neomerx\Cors\Strategies; |
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/** |
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* Copyright 2015 [email protected] (www.neomerx.com) |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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use \Neomerx\Cors\Log\LoggerAwareTrait; |
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use \Psr\Http\Message\RequestInterface; |
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use \Neomerx\Cors\Contracts\Http\ParsedUrlInterface; |
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use \Neomerx\Cors\Contracts\Constants\CorsResponseHeaders; |
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use \Neomerx\Cors\Contracts\Strategies\SettingsStrategyInterface; |
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/** |
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* Implements strategy as a simple set of setting identical for all resources and requests. |
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* |
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* @package Neomerx\Cors |
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*/ |
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class Settings implements SettingsStrategyInterface |
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{ |
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use LoggerAwareTrait; |
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/** |
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* 'All' value for allowed origins. |
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*/ |
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const VALUE_ALLOW_ORIGIN_ALL = CorsResponseHeaders::VALUE_ALLOW_ORIGIN_ALL; |
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/** |
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* 'All' values for allowed headers. |
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*/ |
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const VALUE_ALLOW_ALL_HEADERS = '*'; |
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/** Settings key */ |
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const KEY_SERVER_ORIGIN = 0; |
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/** Settings key */ |
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const KEY_SERVER_ORIGIN_SCHEME = 'scheme'; |
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/** Settings key */ |
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const KEY_SERVER_ORIGIN_HOST = 'host'; |
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/** Settings key */ |
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const KEY_SERVER_ORIGIN_PORT = 'port'; |
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/** Settings key */ |
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const KEY_ALLOWED_ORIGINS = 1; |
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/** Settings key */ |
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const KEY_ALLOWED_METHODS = 2; |
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/** Settings key */ |
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const KEY_ALLOWED_HEADERS = 3; |
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/** Settings key */ |
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const KEY_EXPOSED_HEADERS = 4; |
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/** Settings key */ |
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const KEY_IS_USING_CREDENTIALS = 5; |
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/** Settings key */ |
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const KEY_FLIGHT_CACHE_MAX_AGE = 6; |
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/** Settings key */ |
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const KEY_IS_FORCE_ADD_METHODS = 7; |
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/** Settings key */ |
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const KEY_IS_FORCE_ADD_HEADERS = 8; |
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/** Settings key */ |
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const KEY_IS_CHECK_HOST = 9; |
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/** |
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* @var array |
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*/ |
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private $settings; |
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/** |
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* @param array $settings |
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*/ |
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public function __construct(array $settings = null) |
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{ |
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$this->setSettings($settings !== null ? $settings : $this->getDefaultSettings()); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getSettings() |
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{ |
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return $this->settings; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setSettings(array $settings) |
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{ |
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$this->settings = $settings; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getServerOrigin() |
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{ |
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return $this->settings[self::KEY_SERVER_ORIGIN]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setServerOrigin($origin) |
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{ |
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$this->settings[self::KEY_SERVER_ORIGIN] = is_string($origin) === true ? parse_url($origin) : $origin; |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function isPreFlightCanBeCached(RequestInterface $request) |
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{ |
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return $this->getPreFlightCacheMaxAge($request) > 0; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getPreFlightCacheMaxAge(RequestInterface $request) |
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{ |
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return $this->settings[self::KEY_FLIGHT_CACHE_MAX_AGE]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setPreFlightCacheMaxAge($cacheMaxAge) |
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{ |
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$this->settings[self::KEY_FLIGHT_CACHE_MAX_AGE] = $cacheMaxAge; |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function isForceAddAllowedMethodsToPreFlightResponse() |
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{ |
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return $this->settings[self::KEY_IS_FORCE_ADD_METHODS]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setForceAddAllowedMethodsToPreFlightResponse($forceFlag) |
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{ |
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$this->settings[self::KEY_IS_FORCE_ADD_METHODS] = $forceFlag; |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function isForceAddAllowedHeadersToPreFlightResponse() |
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{ |
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return $this->settings[self::KEY_IS_FORCE_ADD_HEADERS]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setForceAddAllowedHeadersToPreFlightResponse($forceFlag) |
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{ |
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$this->settings[self::KEY_IS_FORCE_ADD_HEADERS] = $forceFlag; |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function isRequestCredentialsSupported(RequestInterface $request) |
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{ |
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return $this->settings[self::KEY_IS_USING_CREDENTIALS]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setRequestCredentialsSupported($isSupported) |
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{ |
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$this->settings[self::KEY_IS_USING_CREDENTIALS] = $isSupported; |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function isRequestOriginAllowed(ParsedUrlInterface $requestOrigin) |
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{ |
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// check if all origins are allowed with '*' |
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$isAllowed = |
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isset($this->settings[self::KEY_ALLOWED_ORIGINS][CorsResponseHeaders::VALUE_ALLOW_ORIGIN_ALL]); |
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if ($isAllowed === false) { |
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$requestOriginStr = strtolower($requestOrigin->getOrigin()); |
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$isAllowed = isset($this->settings[self::KEY_ALLOWED_ORIGINS][$requestOriginStr]); |
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} |
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return $isAllowed; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setRequestAllowedOrigins(array $origins) |
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{ |
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$this->settings[self::KEY_ALLOWED_ORIGINS] = []; |
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foreach ($origins as $origin => $enabled) { |
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$lcOrigin = strtolower($origin); |
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$this->settings[self::KEY_ALLOWED_ORIGINS][$lcOrigin] = $enabled; |
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} |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function isRequestMethodSupported($method) |
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{ |
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$isAllowed = isset($this->settings[self::KEY_ALLOWED_METHODS][$method]); |
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return $isAllowed; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function isRequestAllHeadersSupported($headers) |
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{ |
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$allSupported = true; |
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if (isset($this->settings[self::KEY_ALLOWED_HEADERS][self::VALUE_ALLOW_ALL_HEADERS]) === true) { |
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return $allSupported; |
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} |
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foreach ($headers as $header) { |
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$lcHeader = strtolower($header); |
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if (isset($this->settings[self::KEY_ALLOWED_HEADERS][$lcHeader]) === false) { |
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$allSupported = false; |
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$this->logInfo( |
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'Request header is not allowed. Check config settings for Allowed Headers.', |
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['header' => $header] |
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); |
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break; |
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} |
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} |
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return $allSupported; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getRequestAllowedMethods(RequestInterface $request, $requestMethod) |
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{ |
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return implode(', ', $this->getEnabledItems($this->settings[self::KEY_ALLOWED_METHODS])); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setRequestAllowedMethods(array $methods) |
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{ |
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$this->settings[self::KEY_ALLOWED_METHODS] = []; |
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foreach ($methods as $method => $enabled) { |
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$this->settings[self::KEY_ALLOWED_METHODS][$method] = $enabled; |
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} |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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3 |
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public function getRequestAllowedHeaders(RequestInterface $request, array $requestHeaders) |
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{ |
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return implode(', ', $this->getEnabledItems($this->settings[self::KEY_ALLOWED_HEADERS])); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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19 |
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public function setRequestAllowedHeaders(array $headers) |
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{ |
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19 |
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$this->settings[self::KEY_ALLOWED_HEADERS] = []; |
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19 |
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foreach ($headers as $header => $enabled) { |
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$lcHeader = strtolower($header); |
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$this->settings[self::KEY_ALLOWED_HEADERS][$lcHeader] = $enabled; |
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} |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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2 |
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public function getResponseExposedHeaders(RequestInterface $request) |
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{ |
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2 |
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return $this->getEnabledItems($this->settings[self::KEY_EXPOSED_HEADERS]); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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19 |
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public function setResponseExposedHeaders(array $headers) |
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{ |
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19 |
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$this->settings[self::KEY_EXPOSED_HEADERS] = $headers; |
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19 |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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341
|
11 |
|
public function isCheckHost() |
|
342
|
|
|
{ |
|
343
|
11 |
|
return $this->settings[self::KEY_IS_CHECK_HOST]; |
|
344
|
|
|
} |
|
345
|
|
|
|
|
346
|
|
|
/** |
|
347
|
|
|
* @inheritdoc |
|
348
|
|
|
*/ |
|
349
|
19 |
|
public function setCheckHost($checkFlag) |
|
350
|
|
|
{ |
|
351
|
19 |
|
$this->settings[self::KEY_IS_CHECK_HOST] = $checkFlag; |
|
352
|
|
|
|
|
353
|
19 |
|
return $this; |
|
354
|
|
|
} |
|
355
|
|
|
|
|
356
|
|
|
/** |
|
357
|
|
|
* Select only enabled items from $list. |
|
358
|
|
|
* |
|
359
|
|
|
* @param array $list |
|
360
|
|
|
* |
|
361
|
|
|
* @return array |
|
362
|
|
|
*/ |
|
363
|
6 |
|
protected function getEnabledItems(array $list) |
|
364
|
|
|
{ |
|
365
|
6 |
|
$items = []; |
|
366
|
|
|
|
|
367
|
6 |
|
foreach ($list as $item => $enabled) { |
|
368
|
6 |
|
if ($enabled === true) { |
|
369
|
6 |
|
$items[] = $item; |
|
370
|
6 |
|
} |
|
371
|
6 |
|
} |
|
372
|
|
|
|
|
373
|
6 |
|
return $items; |
|
374
|
|
|
} |
|
375
|
|
|
|
|
376
|
|
|
/** |
|
377
|
|
|
* @return array |
|
|
|
|
|
|
378
|
|
|
*/ |
|
379
|
19 |
|
protected function getDefaultSettings() |
|
380
|
|
|
{ |
|
381
|
|
|
return [ |
|
382
|
|
|
/** |
|
383
|
|
|
* Array should be in parse_url() result format. |
|
384
|
|
|
* @see http://php.net/manual/function.parse-url.php |
|
385
|
|
|
*/ |
|
386
|
19 |
|
self::KEY_SERVER_ORIGIN => [ |
|
387
|
19 |
|
self::KEY_SERVER_ORIGIN_SCHEME => '', |
|
388
|
19 |
|
self::KEY_SERVER_ORIGIN_HOST => '', |
|
389
|
19 |
|
self::KEY_SERVER_ORIGIN_PORT => ParsedUrlInterface::DEFAULT_PORT, |
|
390
|
19 |
|
], |
|
391
|
|
|
/** |
|
392
|
|
|
* A list of allowed request origins (lower-cased, no trail slashes). |
|
393
|
|
|
* Value `true` enables and value `null` disables origin. |
|
394
|
|
|
* If all origins '*' are enabled all settings for other origins are ignored. |
|
395
|
|
|
* For example, [ |
|
396
|
|
|
* 'http://example.com:123' => true, |
|
397
|
|
|
* 'http://evil.com' => null, |
|
398
|
|
|
* self::VALUE_ALLOW_ORIGIN_ALL => null, |
|
399
|
|
|
* ]; |
|
400
|
|
|
*/ |
|
401
|
19 |
|
self::KEY_ALLOWED_ORIGINS => [], |
|
402
|
|
|
/** |
|
403
|
|
|
* A list of allowed request methods (case sensitive). |
|
404
|
|
|
* Value `true` enables and value `null` disables method. |
|
405
|
|
|
* For example, [ |
|
406
|
|
|
* 'GET' => true, |
|
407
|
|
|
* 'PATCH' => true, |
|
408
|
|
|
* 'POST' => true, |
|
409
|
|
|
* 'PUT' => null, |
|
410
|
|
|
* 'DELETE' => true, |
|
411
|
|
|
* ]; |
|
412
|
|
|
* Security Note: you have to remember CORS is not access control system and you should not expect all |
|
413
|
|
|
* cross-origin requests will have pre-flights. For so-called 'simple' methods with so-called 'simple' |
|
414
|
|
|
* headers request will be made without pre-flight. Thus you can not restrict such requests with CORS |
|
415
|
|
|
* and should use other means. |
|
416
|
|
|
* For example method 'GET' without any headers or with only 'simple' headers will not have pre-flight |
|
417
|
|
|
* request so disabling it will not restrict access to resource(s). |
|
418
|
|
|
* You can read more on 'simple' methods at http://www.w3.org/TR/cors/#simple-method |
|
419
|
|
|
*/ |
|
420
|
19 |
|
self::KEY_ALLOWED_METHODS => [], |
|
421
|
|
|
/** |
|
422
|
|
|
* A list of allowed request headers (lower-cased). Value `true` enables and |
|
423
|
|
|
* value `null` disables header. |
|
424
|
|
|
* For example, [ |
|
425
|
|
|
* 'content-type' => true, |
|
426
|
|
|
* 'x-custom-request-header' => null, |
|
427
|
|
|
* self::VALUE_ALLOW_ALL_HEADERS => null, |
|
428
|
|
|
* ]; |
|
429
|
|
|
* Security Note: you have to remember CORS is not access control system and you should not expect all |
|
430
|
|
|
* cross-origin requests will have pre-flights. For so-called 'simple' methods with so-called 'simple' |
|
431
|
|
|
* headers request will be made without pre-flight. Thus you can not restrict such requests with CORS |
|
432
|
|
|
* and should use other means. |
|
433
|
|
|
* For example method 'GET' without any headers or with only 'simple' headers will not have pre-flight |
|
434
|
|
|
* request so disabling it will not restrict access to resource(s). |
|
435
|
|
|
* You can read more on 'simple' headers at http://www.w3.org/TR/cors/#simple-header |
|
436
|
|
|
*/ |
|
437
|
19 |
|
self::KEY_ALLOWED_HEADERS => [], |
|
438
|
|
|
/** |
|
439
|
|
|
* A list of headers (case insensitive) which will be made accessible to |
|
440
|
|
|
* user agent (browser) in response. |
|
441
|
|
|
* Value `true` enables and value `null` disables header. |
|
442
|
|
|
* For example, [ |
|
443
|
|
|
* 'Content-Type' => true, |
|
444
|
|
|
* 'X-Custom-Response-Header' => true, |
|
445
|
|
|
* 'X-Disabled-Header' => null, |
|
446
|
|
|
* ]; |
|
447
|
|
|
*/ |
|
448
|
19 |
|
self::KEY_EXPOSED_HEADERS => [], |
|
449
|
|
|
/** |
|
450
|
|
|
* If access with credentials is supported by the resource. |
|
451
|
|
|
*/ |
|
452
|
19 |
|
self::KEY_IS_USING_CREDENTIALS => false, |
|
453
|
|
|
/** |
|
454
|
|
|
* Pre-flight response cache max period in seconds. |
|
455
|
|
|
*/ |
|
456
|
19 |
|
self::KEY_FLIGHT_CACHE_MAX_AGE => 0, |
|
457
|
|
|
/** |
|
458
|
|
|
* If allowed methods should be added to pre-flight response when |
|
459
|
|
|
* 'simple' method is requested (see #6.2.9 CORS). |
|
460
|
|
|
* @see http://www.w3.org/TR/cors/#resource-preflight-requests |
|
461
|
|
|
*/ |
|
462
|
19 |
|
self::KEY_IS_FORCE_ADD_METHODS => false, |
|
463
|
|
|
/** |
|
464
|
|
|
* If allowed headers should be added when request headers are 'simple' and |
|
465
|
|
|
* non of them is 'Content-Type' (see #6.2.10 CORS). |
|
466
|
|
|
* @see http://www.w3.org/TR/cors/#resource-preflight-requests |
|
467
|
|
|
*/ |
|
468
|
19 |
|
self::KEY_IS_FORCE_ADD_HEADERS => false, |
|
469
|
|
|
/** |
|
470
|
|
|
* If request 'Host' header should be checked against server's origin. |
|
471
|
|
|
*/ |
|
472
|
19 |
|
self::KEY_IS_CHECK_HOST => false, |
|
473
|
19 |
|
]; |
|
474
|
|
|
} |
|
475
|
|
|
} |
|
476
|
|
|
|
This check looks for
@paramannotations where the type inferred by our type inference engine differs from the declared type.It makes a suggestion as to what type it considers more descriptive. In addition it looks for parameters that have the generic type
arrayand suggests a stricter type likearray<String>.Most often this is a case of a parameter that can be null in addition to its declared types.