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<?php |
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/** |
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* SEOmatic plugin for Craft CMS 3.x |
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* |
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* A turnkey SEO implementation for Craft CMS that is comprehensive, powerful, |
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* and flexible |
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* |
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* @link https://nystudio107.com |
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* @copyright Copyright (c) 2017 nystudio107 |
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*/ |
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namespace nystudio107\seomatic\base; |
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use Craft; |
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use nystudio107\seomatic\helpers\Dependency; |
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use nystudio107\seomatic\models\MetaJsonLdContainer; |
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use nystudio107\seomatic\models\MetaScriptContainer; |
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use nystudio107\seomatic\Seomatic; |
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/** |
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* @author nystudio107 |
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* @package Seomatic |
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* @since 3.3.11 |
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*/ |
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abstract class NonceContainer extends MetaContainer implements NonceContainerInterface |
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{ |
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// Traits |
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// ========================================================================= |
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use NonceContainerTrait; |
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// Constants |
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// ========================================================================= |
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const CSP_HEADERS = [ |
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'Content-Security-Policy', |
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'X-Content-Security-Policy', |
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'X-WebKit-CSP', |
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]; |
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const CSP_DIRECTIVE = 'script-src'; |
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// Public Methods |
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// ========================================================================= |
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/** |
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* @inheritDoc |
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*/ |
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public function addNonceTags(array $cspNonces) |
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{ |
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if (!empty(Seomatic::$settings->cspNonce) && Seomatic::$settings->cspNonce === 'tag' && !empty($cspNonces)) { |
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$serializedNonces = implode(" ", $cspNonces); |
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$cspHeader = self::CSP_HEADERS[0]; |
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$cspDirective = self::CSP_DIRECTIVE; |
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$cspValue = "{$cspDirective} {$serializedNonces};"; |
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$metaTag = Seomatic::$plugin->tag->create([ |
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'key' => md5($cspValue), |
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'httpEquiv' => $cspHeader, |
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'content' => $cspValue, |
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]); |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function addNonceHeaders(array $cspNonces) |
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{ |
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if (!empty(Seomatic::$settings->cspNonce) && Seomatic::$settings->cspNonce === 'header' && !empty($cspNonces)) { |
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$serializedNonces = implode(" ", $cspNonces); |
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$cspDirective = self::CSP_DIRECTIVE; |
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$cspValue = "{$cspDirective} {$serializedNonces};"; |
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foreach (self::CSP_HEADERS as $cspHeader) { |
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Craft::$app->getResponse()->getHeaders()->add($cspHeader, $cspValue); |
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} |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getCspNonces(): array |
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{ |
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$cspNonces = []; |
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/** @var NonceItem $metaItemModel */ |
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foreach ($this->data as $metaItemModel) { |
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if ($metaItemModel->include && !empty($metaItemModel->nonce)) { |
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$dependencies = []; |
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$nonce = $metaItemModel->nonce; |
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if ($this instanceof MetaScriptContainer) { |
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$dependencies = [ |
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Dependency::SCRIPT_DEPENDENCY => [$metaItemModel->key], |
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]; |
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} |
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if ($this instanceof MetaJsonLdContainer) { |
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$dependencies = [ |
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Dependency::JSONLD_DEPENDENCY => [$metaItemModel->key], |
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]; |
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} |
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$cspNonce = "'nonce-{$nonce}'"; |
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if (Dependency::validateDependencies($dependencies) && !in_array($cspNonce, $cspNonces, true)) { |
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$cspNonces[] = $cspNonce; |
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} |
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} |
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} |
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return $cspNonces; |
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} |
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// Protected Methods |
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// ========================================================================= |
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/** |
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* Return a CSP value for inclusion in header or meta tag |
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* |
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* @param string $nonce |
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* @param string $cspDirective |
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* @return string |
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*/ |
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protected function getCspValue(string $nonce, string $cspDirective): string |
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{ |
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return "{$cspDirective} 'nonce-$nonce'"; |
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} |
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} |
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nystudio107 /
craft-seomatic
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