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<?php |
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namespace Elementor\Includes; |
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|
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class EditorAssetsAPI { |
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protected array $config; |
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|
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const ASSETS_DATA_TRANSIENT_KEY = 'ASSETS_DATA_TRANSIENT_KEY'; |
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|
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const ASSETS_DATA_URL = 'ASSETS_DATA_URL'; |
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|
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const ASSETS_DATA_KEY = 'ASSETS_DATA_KEY'; |
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|
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const ASSETS_DATA_EXPIRATION = 'ASSETS_DATA_EXPIRATION'; |
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|
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const DEFAULT_EXPIRATION_TIME = '+1 hour'; |
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const FAILED_FETCH_EXPIRATION = '+30 minutes'; |
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|
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const PRODUCTION_URL = 'https://assets.elementor.com'; |
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const STAGING_URL = 'https://assets.stg.elementor.red'; |
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const DEV_URL = 'https://assets.dev.builder.elementor.red'; |
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|
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private static ?array $allowed_hosts = null; |
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|
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public function __construct( array $config ) { |
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$this->config = $config; |
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} |
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|
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public function config( $key ): string { |
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return $this->config[ $key ] ?? ''; |
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} |
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|
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public function get_assets_data( $force_request = false ): array { |
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$assets_data = $this->get_transient( $this->config( static::ASSETS_DATA_TRANSIENT_KEY ) ); |
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|
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if ( $force_request || false === $assets_data ) { |
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$fresh_data = $this->fetch_data(); |
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|
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if ( empty( $fresh_data ) ) { |
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if ( false === $assets_data ) { |
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// Fetch failed and there is no existing cache. Write an empty |
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// entry with a short TTL so repeated page loads don't make |
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// blocking HTTP calls until the CDN recovers. |
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$this->set_transient( $this->config( static::ASSETS_DATA_TRANSIENT_KEY ), [], static::FAILED_FETCH_EXPIRATION ); |
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} |
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return ! empty( $assets_data ) ? $assets_data : []; |
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} |
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|
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$assets_data = $fresh_data; |
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$this->set_transient( $this->config( static::ASSETS_DATA_TRANSIENT_KEY ), $assets_data, $this->get_expiration_time() ); |
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} |
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|
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return $assets_data; |
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} |
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|
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private function fetch_data(): array { |
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$url = $this->config( static::ASSETS_DATA_URL ); |
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$data = self::do_safe_get_request( $url ); |
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|
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if ( ! $this->has_valid_data( $data ) ) { |
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return []; |
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} |
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|
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return $data[ $this->config( static::ASSETS_DATA_KEY ) ]; |
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} |
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|
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private function get_transient( $cache_key ) { |
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$cache = get_option( $cache_key ); |
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|
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if ( empty( $cache['timeout'] ) ) { |
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return false; |
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} |
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|
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if ( current_time( 'timestamp' ) > $cache['timeout'] ) { |
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return false; |
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} |
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|
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return json_decode( $cache['value'], true ); |
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} |
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|
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private function set_transient( $cache_key, $value, $expiration ): bool { |
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$data = [ |
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'timeout' => strtotime( $expiration, current_time( 'timestamp' ) ), |
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'value' => wp_json_encode( $value ), |
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]; |
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|
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return update_option( $cache_key, $data, false ); |
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} |
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|
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private function get_expiration_time(): string { |
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$expiration = $this->config( static::ASSETS_DATA_EXPIRATION ); |
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return $expiration ? $expiration : static::DEFAULT_EXPIRATION_TIME; |
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} |
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|
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private function has_valid_data( $data ): bool { |
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if ( ! is_array( $data ) ) { |
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return false; |
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} |
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|
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$key = $this->config( static::ASSETS_DATA_KEY ); |
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return static::is_non_empty_array( $data[ $key ] ?? null ); |
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} |
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|
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public static function has_valid_nested_array( $data, array $nested_array_path ): bool { |
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$current = $data; |
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|
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foreach ( $nested_array_path as $nested_key ) { |
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if ( ! is_array( $current ) || ! array_key_exists( $nested_key, $current ) ) { |
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return false; |
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} |
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$current = $current[ $nested_key ]; |
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} |
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|
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if ( ! static::is_non_empty_array( $current ) ) { |
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return false; |
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} |
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|
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return true; |
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} |
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|
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public static function is_valid_data( $data ): bool { |
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return static::is_non_empty_array( $data ); |
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} |
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|
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private static function is_non_empty_array( $value ): bool { |
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return is_array( $value ) && ! empty( $value ); |
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} |
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|
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private static function get_allowed_hosts(): array { |
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if ( null !== self::$allowed_hosts ) { |
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return self::$allowed_hosts; |
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} |
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|
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self::$allowed_hosts = array_values( array_filter( array_map( |
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fn( $url ) => wp_parse_url( $url, PHP_URL_HOST ), |
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[ self::PRODUCTION_URL, self::STAGING_URL, self::DEV_URL ] |
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) ) ); |
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|
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return self::$allowed_hosts; |
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} |
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|
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public static function is_allowed_url( $url ): bool { |
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if ( ! is_string( $url ) || ! wp_http_validate_url( $url ) ) { |
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return false; |
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} |
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|
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if ( 'https' !== wp_parse_url( $url, PHP_URL_SCHEME ) ) { |
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return false; |
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} |
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|
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return in_array( wp_parse_url( $url, PHP_URL_HOST ), self::get_allowed_hosts(), true ); |
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} |
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|
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public static function do_safe_get_request( $url ) { |
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if ( ! self::is_allowed_url( $url ) ) { |
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return null; |
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} |
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|
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$response = wp_safe_remote_get( $url, [ |
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'timeout' => 5, |
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'limit_response_size' => 512 * KB_IN_BYTES, |
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] ); |
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|
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if ( is_wp_error( $response ) || \WP_Http::OK !== (int) wp_remote_retrieve_response_code( $response ) ) { |
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return null; |
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} |
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|
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return json_decode( wp_remote_retrieve_body( $response ), true ); |
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} |
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} |
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