class-cache.php
2 years ago
class-cookiestate.php
2 months ago
class-errors.php
8 months ago
class-files.php
2 years ago
class-host.php
3 days ago
class-modules.php
1 month ago
class-paths.php
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class-request.php
8 months ago
class-status.php
3 days ago
class-visitor.php
3 days ago
class-request.php
113 lines
| 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 | } |
| 113 |