<h2>File Contents: /home/planet5/www/wp-content/plugins/wordpress-seo-premium/admin/class-license-page-manager.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/www/wp-content/plugins/wordpress-seo-premium/admin/class-license-page-manager.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php
/**
 * WPSEO plugin file.
 *
 * @package WPSEO\Admin
 */

/**
 * Represents the values for a single Yoast Premium extension plugin.
 */
class WPSEO_License_Page_Manager implements WPSEO_WordPress_Integration {

	/**
	 * Version number for License Page Manager.
	 *
	 * @var string
	 */
	const VERSION_LEGACY = &#039;1&#039;;

	/**
	 * Version number for License Page Manager.
	 *
	 * @var string
	 */
	const VERSION_BACKWARDS_COMPATIBILITY = &#039;2&#039;;

	/**
	 * Registers all hooks to WordPress.
	 */
	public function register_hooks() {
		add_filter( &#039;http_response&#039;, [ $this, &#039;handle_response&#039; ], 10, 3 );

		if ( $this-&gt;get_version() === self::VERSION_BACKWARDS_COMPATIBILITY ) {
			add_filter( &#039;yoast-license-valid&#039;, &#039;__return_true&#039; );
			add_filter( &#039;yoast-show-license-notice&#039;, &#039;__return_false&#039; );
			add_action( &#039;admin_init&#039;, [ $this, &#039;validate_extensions&#039; ], 15 );
		}
		else {
			add_action( &#039;admin_init&#039;, [ $this, &#039;remove_faulty_notifications&#039; ], 15 );
		}
	}

	/**
	 * Validates the extensions and show a notice for the invalid extensions.
	 */
	public function validate_extensions() {

		if ( filter_input( INPUT_GET, &#039;page&#039; ) === WPSEO_Admin::PAGE_IDENTIFIER ) {
			/**
			 * Filter: &#039;yoast-active-extensions&#039; - Collects all active extensions. This hook is implemented in the
			 *                                     license manager.
			 *
			 * @api array $extensions The array with extensions.
			 */
			apply_filters( &#039;yoast-active-extensions&#039;, [] );
		}

		$extension_list = new WPSEO_Extensions();
		$extensions     = $extension_list-&gt;get();

		$notification_center = Yoast_Notification_Center::get();

		foreach ( $extensions as $product_name ) {
			$notification = $this-&gt;create_notification( $product_name );

			// Add a notification when the installed plugin isn&#039;t activated in My Yoast.
			if ( $extension_list-&gt;is_installed( $product_name ) &amp;&amp; ! $extension_list-&gt;is_valid( $product_name ) ) {
				$notification_center-&gt;add_notification( $notification );

				continue;
			}

			$notification_center-&gt;remove_notification( $notification );
		}
	}

	/**
	 * Removes the faulty set notifications.
	 */
	public function remove_faulty_notifications() {
		$extension_list = new WPSEO_Extensions();
		$extensions     = $extension_list-&gt;get();

		$notification_center = Yoast_Notification_Center::get();

		foreach ( $extensions as $product_name ) {
			$notification = $this-&gt;create_notification( $product_name );
			$notification_center-&gt;remove_notification( $notification );
		}
	}

	/**
	 * Handles the response.
	 *
	 * @param array  $response          HTTP response.
	 * @param array  $request_arguments HTTP request arguments. Unused.
	 * @param string $url               The request URL.
	 *
	 * @return array The response array.
	 */
	public function handle_response( array $response, $request_arguments, $url ) {
		$response_code = wp_remote_retrieve_response_code( $response );

		if ( $response_code === 200 &amp;&amp; $this-&gt;is_expected_endpoint( $url ) ) {
			$response_data = $this-&gt;parse_response( $response );
			$this-&gt;detect_version( $response_data );
		}

		return $response;
	}

	/**
	 * Returns the license page to use based on the version number.
	 *
	 * @return string The page to use.
	 */
	public function get_license_page() {
		return &#039;licenses&#039;;
	}

	/**
	 * Returns the version number of the license server.
	 *
	 * @return int The version number
	 */
	protected function get_version() {
		return get_option( $this-&gt;get_option_name(), self::VERSION_BACKWARDS_COMPATIBILITY );
	}

	/**
	 * Returns the option name.
	 *
	 * @return string The option name.
	 */
	protected function get_option_name() {
		return &#039;wpseo_license_server_version&#039;;
	}

	/**
	 * Sets the version when there is a value in the response.
	 *
	 * @param array $response The response to extract the version from.
	 */
	protected function detect_version( $response ) {
		if ( ! empty( $response[&#039;serverVersion&#039;] ) ) {
			$this-&gt;set_version( $response[&#039;serverVersion&#039;] );
		}
	}

	/**
	 * Sets the version.
	 *
	 * @param string $server_version The version number to save.
	 */
	protected function set_version( $server_version ) {
		update_option( $this-&gt;get_option_name(), $server_version );
	}

	/**
	 * Parses the response by getting its body and do a unserialize of it.
	 *
	 * @param array $response The response to parse.
	 *
	 * @return mixed|string|false The parsed response.
	 */
	protected function parse_response( $response ) {
		$response = json_decode( wp_remote_retrieve_body( $response ), true );
		$response = maybe_unserialize( $response );

		return $response;
	}

	/**
	 * Checks if the given url matches the expected endpoint.
	 *
	 * @param string $url The url to check.
	 *
	 * @return bool True when url matches the endpoint.
	 */
	protected function is_expected_endpoint( $url ) {
		$url_parts = wp_parse_url( $url );

		$is_yoast_com = ( in_array( $url_parts[&#039;host&#039;], [ &#039;yoast.com&#039;, &#039;my.yoast.com&#039; ], true ) );
		$is_edd_api   = ( isset( $url_parts[&#039;path&#039;] ) &amp;&amp; $url_parts[&#039;path&#039;] === &#039;/edd-sl-api&#039; );

		return $is_yoast_com &amp;&amp; $is_edd_api;
	}

	/**
	 * Creates an instance of Yoast_Notification.
	 *
	 * @param string $product_name The product to create the notification for.
	 *
	 * @return Yoast_Notification The created notification.
	 */
	protected function create_notification( $product_name ) {
		$notification_options = [
			&#039;type&#039;         =&gt; Yoast_Notification::ERROR,
			&#039;id&#039;           =&gt; &#039;wpseo-dismiss-&#039; . sanitize_title_with_dashes( $product_name, null, &#039;save&#039; ),
			&#039;capabilities&#039; =&gt; &#039;wpseo_manage_options&#039;,
		];

		$notification = new Yoast_Notification(
			sprintf(
				/* translators: %1$s expands to the product name. %2$s expands to a link to My Yoast  */
				__( &#039;You are not receiving updates or support! Fix this problem by adding this site and enabling %1$s for it in %2$s.&#039;, &#039;wordpress-seo&#039; ),
				$product_name,
				&#039;&lt;a href=&quot;&#039; . WPSEO_Shortlinker::get( &#039;https://yoa.st/13j&#039; ) . &#039;&quot; target=&quot;_blank&quot;&gt;My Yoast&lt;/a&gt;&#039;
			),
			$notification_options
		);

		return $notification;
	}
}
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