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<?php |
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/** |
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* Platine Framework |
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* |
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* Platine Framework is a lightweight, high-performance, simple and elegant PHP |
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* Web framework |
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* |
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* This content is released under the MIT License (MIT) |
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* |
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* Copyright (c) 2020 Platine Framework |
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* Copyright (c) 2015 - 2023 Paragon Initiative Enterprises |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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/** |
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* @file SecurityPolicy.php |
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* |
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* The Security Policy class |
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* |
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* @package Platine\Framework\Security |
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* @author Platine Developers team |
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* @copyright Copyright (c) 2020 |
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* @license http://opensource.org/licenses/MIT MIT License |
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* @link https://www.platine-php.com |
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* @version 1.0.0 |
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* @filesource |
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*/ |
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declare(strict_types=1); |
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namespace Platine\Framework\Security; |
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use Platine\Config\Config; |
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use Platine\Framework\Security\Policy\ClearSiteDataPolicy; |
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use Platine\Framework\Security\Policy\ContentSecurityPolicy; |
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use Platine\Framework\Security\Policy\FeaturePermissionPolicy; |
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use Platine\Framework\Security\Policy\StrictTransportSecurityPolicy; |
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use Platine\Route\Router; |
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use Platine\Stdlib\Helper\Json; |
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/** |
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* @class SecurityPolicy |
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* @package Platine\Framework\Security |
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* @template T |
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*/ |
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class SecurityPolicy |
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{ |
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/** |
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* The nonce's for script-src and style-src |
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* @var array<string, array<string>> |
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*/ |
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protected array $nonces = [ |
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'style' => [], |
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'script' => [], |
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]; |
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/** |
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* Create new instance |
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* @param Config<T> $config |
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* @param Router $router |
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* @param array<string, mixed> $configurations |
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*/ |
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public function __construct( |
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protected Config $config, |
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protected Router $router, |
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protected array $configurations = [] |
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) { |
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} |
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/** |
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* Return the headers to be used in response |
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* @return array<string, string> |
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*/ |
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public function headers(): array |
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{ |
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$headers = array_merge( |
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$this->csp(), |
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$this->features(), |
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$this->hsts(), |
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$this->clearSiteData(), |
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$this->commons() |
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); |
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return array_filter($headers); |
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} |
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/** |
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* Generate random nonce value for current request. |
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* @param string $target |
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* @return string |
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*/ |
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public function nonce(string $target = 'script'): string |
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{ |
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$nonce = base64_encode(bin2hex(random_bytes(8))); |
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$this->nonces[$target][] = $nonce; |
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return $nonce; |
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} |
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/** |
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* Return the Content Security Policy headers |
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* @return array<string, string> |
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*/ |
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protected function csp(): array |
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{ |
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$config = $this->configurations['csp'] ?? []; |
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$isEnabled = $config['enable'] ?? false; |
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if ($isEnabled === false) { |
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return []; |
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} |
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$config['script-src']['nonces'] = $this->nonces['script']; |
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$config['style-src']['nonces'] = $this->nonces['style']; |
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if (count($config['report-uri'] ?? []) > 0) { |
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$routes = $this->router->routes(); |
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$reportUri = []; |
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foreach ($config['report-uri'] as $url) { |
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if ($routes->has($url)) { |
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$url = $this->config->get('app.host') . $this->router->getUri($url)->getPath(); |
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} |
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$reportUri[] = $url; |
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} |
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$config['report-uri'] = $reportUri; |
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} |
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$isReportOnly = $config['report-only'] ?? false; |
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$header = $isReportOnly |
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? 'Content-Security-Policy-Report-Only' |
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: 'Content-Security-Policy'; |
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$policy = new ContentSecurityPolicy($config); |
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$headers = [$header => $policy->headers()]; |
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$reportTo = []; |
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if ($config['report-to'] ?? false) { |
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if (count($config['report-uri'] ?? []) > 0) { |
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$reportTo['group'] = $config['report-to']; |
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$reportTo['max_age'] = 1800; // TODO use configuration |
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$reportTo['endpoints'] = []; |
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foreach ($config['report-uri'] as $url) { |
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$reportTo['endpoints'][] = [ |
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'url' => $url |
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]; |
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} |
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$headers['Report-To'] = Json::encode($reportTo); |
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} |
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} |
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return $headers; |
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} |
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/** |
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* Return the Permissions Policy headers |
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* @return array<string, string> |
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*/ |
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protected function features(): array |
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{ |
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$config = $this->configurations['features-permissions'] ?? []; |
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$isEnabled = $config['enable'] ?? false; |
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if ($isEnabled === false) { |
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return []; |
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} |
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$policy = new FeaturePermissionPolicy($config); |
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return ['Permissions-Policy' => $policy->headers()]; |
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} |
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/** |
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* Return the HSTS Policy headers |
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* @return array<string, string> |
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*/ |
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protected function hsts(): array |
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{ |
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$config = $this->configurations['hsts'] ?? []; |
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$isEnabled = $config['enable'] ?? false; |
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if ($isEnabled === false) { |
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return []; |
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} |
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$policy = new StrictTransportSecurityPolicy($config); |
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return ['Strict-Transport-Security' => $policy->headers()]; |
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} |
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/** |
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* Return the Clear Site Data Policy headers |
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* @return array<string, string> |
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*/ |
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protected function clearSiteData(): array |
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{ |
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$config = $this->configurations['clear-site-data'] ?? []; |
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$isEnabled = $config['enable'] ?? false; |
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if ($isEnabled === false) { |
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return []; |
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} |
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$policy = new ClearSiteDataPolicy($config); |
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return ['Clear-Site-Data' => $policy->headers()]; |
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} |
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/** |
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* Return the common security policies headers |
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* @return array<string, string> |
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*/ |
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protected function commons(): array |
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{ |
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return array_filter([ |
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'X-Content-Type-Options' => $this->configurations['x-content-type-options'] ?? 'nosniff', |
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'X-Download-Options' => $this->configurations['x-download-options'] ?? 'noopen', |
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'X-Frame-Options' => $this->configurations['x-frame-options'] ?? 'sameorigin', |
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'X-Permitted-Cross-Domain-Policies' => $this->configurations['x-permitted-cross-domain-policies'] ?? 'none', |
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'X-Powered-By' => $this->configurations['x-powered-by'] ?? '', |
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'X-XSS-Protection' => $this->configurations['x-xss-protection'] ?? '1; mode=block', |
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'Referrer-Policy' => $this->configurations['referrer-policy'] ?? 'no-referrer', |
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'Server' => $this->configurations['server'] ?? '', |
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]); |
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} |
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} |
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