← All changes | jetpack_vendor/automattic/jetpack-status/src/class-request.php +112 -0 16.2-beta → 16.3 View file →

		@@ -1,0 +1,112 @@
	1	+<?php
	2	+/**
	3	+ * Get information about the current request.
	4	+ *
	5	+ * @package automattic/jetpack-status
	6	+ */
	7	+
	8	+namespace Automattic\Jetpack\Status;
	9	+
	10	+use Automattic\Jetpack\Constants;
	11	+
	12	+/**
	13	+ * Get information about the current request.
	14	+ */
	15	+class Request {
	16	+ /**
	17	+ * Determine whether the current request is for accessing the frontend.
	18	+ * Also update Vary headers to indicate that the response may vary by Accept header.
	19	+ *
	20	+ * @since 6.0.3 Added $send_vary_headers argument.
	21	+ *
	22	+ * @param bool $send_vary_headers Whether to send Vary headers.
	23	+ *
	24	+ * @return bool True if it's a frontend request, false otherwise.
	25	+ */
	26	+ public static function is_frontend( $send_vary_headers = true ) {
	27	+ $is_frontend = true;
	28	+ $is_varying_request = true;
	29	+
	30	+ if (
	31	+ is_admin()
	32	+ || wp_doing_ajax()
	33	+ || wp_is_jsonp_request()
	34	+ || is_feed()
	35	+ || Constants::is_true( 'REST_REQUEST' )
	36	+ || Constants::is_true( 'REST_API_REQUEST' )
	37	+ || Constants::is_true( 'WP_CLI' )
	38	+ || Constants::is_true( 'WPCOM_CLI_SCRIPT' ) // Special case for CLI scripts on WP.com that aren't using WP CLI.
	39	+ ) {
	40	+ $is_frontend = false;
	41	+ $is_varying_request = false;
	42	+ } elseif (
	43	+ wp_is_json_request()
	44	+ || wp_is_xml_request()
	45	+ ) {
	46	+ $is_frontend = false;
	47	+ }
	48	+
	49	+ /*
	50	+ * Check existing headers for the request.
	51	+ * If there is no existing Vary Accept header, add one.
	52	+ */
	53	+ if ( $send_vary_headers && $is_varying_request && ! headers_sent() ) {
	54	+ $headers = headers_list();
	55	+ $vary_header_parts = self::get_vary_headers( $headers );
	56	+
	57	+ header( 'Vary: ' . implode( ', ', $vary_header_parts ) );
	58	+ }
	59	+
	60	+ /**
	61	+ * Filter whether the current request is for accessing the frontend.
	62	+ *
	63	+ * @since jetpack-9.0.0
	64	+ * @since 6.0.3 Added $send_vary_headers argument.
	65	+ *
	66	+ * @param bool $is_frontend Whether the current request is for accessing the frontend.
	67	+ * @param bool $send_vary_headers Whether to send Vary headers.
	68	+ */
	69	+ return (bool) apply_filters( 'jetpack_is_frontend', $is_frontend, $send_vary_headers );
	70	+ }
	71	+
	72	+ /**
	73	+ * Go through headers and get a list of Vary headers to add,
	74	+ * including Vary on Accept and Content-Type if necessary.
	75	+ *
	76	+ * @since jetpack-12.2
	77	+ *
	78	+ * @param array $headers The headers to be sent.
	79	+ *
	80	+ * @return array $vary_header_parts Vary Headers to be sent.
	81	+ */
	82	+ public static function get_vary_headers( $headers = array() ) {
	83	+ $vary_header_parts = array( 'accept', 'content-type' );
	84	+
	85	+ foreach ( $headers as $header ) {
	86	+ // Check for a Vary header.
	87	+ if ( ! str_starts_with( strtolower( $header ), 'vary:' ) ) {
	88	+ continue;
	89	+ }
	90	+
	91	+ // If the header is a wildcard, we'll return that.
	92	+ if ( str_contains( $header, '*' ) ) {
	93	+ $vary_header_parts = array( '*' );
	94	+ break;
	95	+ }
	96	+
	97	+ // Remove the Vary: part of the header.
	98	+ $header = preg_replace( '/^vary\:\s?/i', '', $header );
	99	+
	100	+ // Remove spaces from the header.
	101	+ $header = str_replace( ' ', '', $header );
	102	+
	103	+ // Break the header into parts.
	104	+ $header_parts = explode( ',', strtolower( $header ) );
	105	+
	106	+ // Build an array with the Accept header and what was already there.
	107	+ $vary_header_parts = array_values( array_unique( array_merge( $vary_header_parts, $header_parts ) ) );
	108	+ }
	109	+
	110	+ return $vary_header_parts;
	111	+ }
	112	+}