| @@ -1,9 +1,9 @@ | ||
| 1 | 1 | <?php |
| 2 | 2 | /** |
| 3 | - * File based caching drop-in based on Taylor Lovett's Simple Cache | |
| 4 | - * @link https://github.com/tlovett1/simple-cache/blob/master/inc/dropins/file-based-page-cache.php | |
| 3 | + * Forked from https://github.com/tlovett1/simple-cache/ | |
| 5 | 4 | */ |
| 5 | + | |
| 6 | 6 | defined( 'ABSPATH' ) || exit; |
| 7 | 7 | |
| 8 | 8 | $powered_cache_start_time = microtime( true ); |
| 9 | 9 | |
| @@ -8,106 +8,159 @@ | ||
| 8 | 8 | $powered_cache_start_time = microtime( true ); |
| 9 | 9 | |
| 10 | 10 | // Don't cache robots.txt or htacesss |
| 11 | 11 | if ( strpos( $_SERVER['REQUEST_URI'], 'robots.txt' ) !== false || strpos( $_SERVER['REQUEST_URI'], '.htaccess' ) !== false ) { |
| 12 | + powered_cache_add_cache_miss_header( "Uncacheable file" ); | |
| 13 | + | |
| 12 | 14 | return; |
| 13 | 15 | } |
| 14 | 16 | |
| 15 | 17 | // Don't cache non-GET requests |
| 16 | 18 | if ( ! isset( $_SERVER['REQUEST_METHOD'] ) || 'GET' !== $_SERVER['REQUEST_METHOD'] ) { |
| 19 | + powered_cache_add_cache_miss_header( "Invalid request method" ); | |
| 20 | + | |
| 17 | 21 | return; |
| 18 | 22 | } |
| 19 | 23 | |
| 24 | +if ( ! isset( $_SERVER['HTTP_USER_AGENT'] ) ) { | |
| 25 | + $_SERVER['HTTP_USER_AGENT'] = ''; | |
| 26 | +} | |
| 27 | + | |
| 20 | 28 | // Don't cache wp-admin |
| 21 | 29 | if ( is_admin() ) { |
| 22 | 30 | return; |
| 23 | 31 | } |
| 24 | 32 | |
| 25 | - | |
| 26 | - | |
| 27 | 33 | $file_extension = $_SERVER['REQUEST_URI']; |
| 28 | 34 | $file_extension = preg_replace( '#^(.*?)\?.*$#', '$1', $file_extension ); |
| 29 | 35 | $file_extension = trim( preg_replace( '#^.*\.(.*)$#', '$1', $file_extension ) ); |
| 30 | 36 | |
| 31 | 37 | // Don't cache disallowed extensions. Prevents wp-cron.php, xmlrpc.php, etc. |
| 32 | -if ( ! preg_match( '#index\.php$#i', $_SERVER['REQUEST_URI'] ) && in_array( $file_extension, array( 'php', 'xml', 'xsl' ) ) ) { | |
| 38 | +if ( ! preg_match( '#index\.php$#i', $_SERVER['REQUEST_URI'] ) && in_array( $file_extension, array( 'php', 'xml', 'xsl' ), true ) ) { | |
| 39 | + powered_cache_add_cache_miss_header( "Disallowed file extension" ); | |
| 40 | + | |
| 33 | 41 | return; |
| 34 | 42 | } |
| 35 | 43 | |
| 36 | -if ( ! $GLOBALS['powered_cache_options']['enable_page_caching'] ) { | |
| 44 | +if ( ! $GLOBALS['powered_cache_options']['enable_page_cache'] ) { | |
| 45 | + powered_cache_add_cache_miss_header( "Page Caching is not enabled" ); | |
| 46 | + | |
| 37 | 47 | return; |
| 38 | 48 | } |
| 39 | 49 | |
| 40 | -// Don't cache page with these user agents | |
| 41 | -if ( ! empty( $GLOBALS['powered_cache_options']['rejected_user_agents'] ) ) { | |
| 42 | - $rejected_user_agents = preg_split( '#(\r\n|\r|\n)#', $GLOBALS['powered_cache_options']['rejected_user_agents'] ); | |
| 43 | - $rejected_user_agents = implode( '|', $rejected_user_agents ); | |
| 44 | - if ( ! empty( $rejected_user_agents ) && isset( $_SERVER['HTTP_USER_AGENT'] ) && preg_match( '#(' . $rejected_user_agents . ')#', $_SERVER['HTTP_USER_AGENT'] ) ) { | |
| 45 | - return; | |
| 46 | - } | |
| 50 | +if ( ! empty( $GLOBALS['powered_cache_options']['dev_mode'] ) ) { | |
| 51 | + powered_cache_add_cache_miss_header( "Dev mode is enabled" ); | |
| 52 | + | |
| 53 | + return; | |
| 47 | 54 | } |
| 48 | 55 | |
| 56 | +if ( isset( $_GET['nopoweredcache'] ) && $_GET['nopoweredcache'] ) { | |
| 57 | + powered_cache_add_cache_miss_header( "Passing nopoweredcache with the query" ); | |
| 49 | 58 | |
| 50 | -// Don't cache SSL | |
| 51 | -if ( powered_cache_is_ssl() && ( ! isset( $GLOBALS['powered_cache_options']['ssl_cache'] ) || false === $GLOBALS['powered_cache_options']['ssl_cache'] ) ) { | |
| 52 | 59 | return; |
| 53 | 60 | } |
| 54 | 61 | |
| 62 | +// Don't cache page with these user agents | |
| 63 | +if ( isset( $powered_cache_rejected_user_agents ) && ! empty( $powered_cache_rejected_user_agents ) ) { | |
| 64 | + $rejected_user_agents = implode( '|', $powered_cache_rejected_user_agents ); | |
| 65 | + if ( ! empty( $rejected_user_agents ) && isset( $_SERVER['HTTP_USER_AGENT'] ) && preg_match( '#(' . $rejected_user_agents . ')#', $_SERVER['HTTP_USER_AGENT'] ) ) { | |
| 66 | + powered_cache_add_cache_miss_header( "Rejected user agent" ); | |
| 55 | 67 | |
| 68 | + return; | |
| 69 | + } | |
| 70 | +} | |
| 71 | + | |
| 56 | 72 | // dont cache mobile |
| 57 | -if ( ! isset( $GLOBALS['powered_cache_options']['cache_mobile'] ) || true !== $GLOBALS['powered_cache_options']['cache_mobile'] ) { | |
| 73 | +if ( empty( $GLOBALS['powered_cache_options']['cache_mobile'] ) ) { | |
| 58 | 74 | global $powered_cache_mobile_browsers, $powered_cache_mobile_prefixes; |
| 59 | 75 | |
| 60 | 76 | $mobile_browsers = addcslashes( implode( '|', preg_split( '/[\s*,\s*]*,+[\s*,\s*]*/', $powered_cache_mobile_browsers ) ), ' ' ); |
| 61 | 77 | $mobile_prefixes = addcslashes( implode( '|', preg_split( '/[\s*,\s*]*,+[\s*,\s*]*/', $powered_cache_mobile_prefixes ) ), ' ' ); |
| 62 | 78 | // Don't cache if mobile detection is activated |
| 63 | - if ( (preg_match( '#^.*(' . $mobile_browsers . ').*#i', $_SERVER['HTTP_USER_AGENT'] ) || preg_match( '#^(' . $mobile_prefixes . ').*#i', substr( $_SERVER['HTTP_USER_AGENT'], 0, 4 ) ) ) ) { | |
| 64 | - return ''; | |
| 79 | + if ( ( preg_match( '#^.*(' . $mobile_browsers . ').*#i', $_SERVER['HTTP_USER_AGENT'] ) || preg_match( '#^(' . $mobile_prefixes . ').*#i', substr( $_SERVER['HTTP_USER_AGENT'], 0, 4 ) ) ) ) { | |
| 80 | + powered_cache_add_cache_miss_header( "Mobile request" ); | |
| 81 | + | |
| 82 | + return; | |
| 65 | 83 | } |
| 66 | 84 | } |
| 67 | 85 | |
| 86 | +// Exclude caching based on HTTP_REFERER | |
| 87 | +if ( ! empty( $powered_cache_rejected_referrers ) && isset( $_SERVER['HTTP_REFERER'] ) && $_SERVER['HTTP_REFERER'] ) { | |
| 88 | + foreach ( $powered_cache_rejected_referrers as $referrer_rule ) { | |
| 89 | + $referrer_rule = trim( $referrer_rule ); | |
| 90 | + if ( $referrer_rule === '' ) { | |
| 91 | + continue; | |
| 92 | + } | |
| 93 | + // If rule starts with ^ or contains regex special chars, treat as regex | |
| 94 | + if ( preg_match( '/[\\^$.|?*+()\[\]]/', $referrer_rule ) ) { | |
| 95 | + if ( @preg_match( '#' . $referrer_rule . '#i', $_SERVER['HTTP_REFERER'] ) ) { | |
| 96 | + if ( preg_match( '#' . $referrer_rule . '#i', $_SERVER['HTTP_REFERER'] ) ) { | |
| 97 | + powered_cache_add_cache_miss_header( "Rejected referer: $referrer_rule" ); | |
| 68 | 98 | |
| 99 | + return; | |
| 100 | + } | |
| 101 | + } | |
| 102 | + } else { | |
| 103 | + // Plain string match | |
| 104 | + if ( strpos( $_SERVER['HTTP_REFERER'], $referrer_rule ) !== false ) { | |
| 105 | + powered_cache_add_cache_miss_header( "Rejected referer: $referrer_rule" ); | |
| 106 | + | |
| 107 | + return; | |
| 108 | + } | |
| 109 | + } | |
| 110 | + } | |
| 111 | +} | |
| 112 | + | |
| 69 | 113 | if ( ! empty( $_COOKIE ) ) { |
| 70 | - //Don't cache if logged in | |
| 71 | - if ( ! isset( $GLOBALS['powered_cache_options']['loggedin_user_cache'] ) || false === $GLOBALS['powered_cache_options']['loggedin_user_cache'] ) { | |
| 72 | - $wp_cookies = array( 'wordpressuser_', 'wordpresspass_', 'wordpress_sec_', 'wordpress_logged_in_' ); | |
| 114 | + $wp_cookies = [ 'wordpressuser_', 'wordpresspass_', 'wordpress_sec_', 'wordpress_logged_in_' ]; | |
| 115 | + $comment_cookies = [ 'comment_author_', 'comment_author_email_', 'comment_author_url_' ]; | |
| 73 | 116 | |
| 74 | - // check logged-in cookie | |
| 117 | + // Check if logged-in caching is disabled or the user is not logged in | |
| 118 | + if ( empty( $GLOBALS['powered_cache_options']['loggedin_user_cache'] ) || false === powered_cache_get_user_cookie() ) { | |
| 119 | + // Standard check for logged-in status | |
| 75 | 120 | foreach ( $_COOKIE as $key => $value ) { |
| 76 | 121 | foreach ( $wp_cookies as $cookie ) { |
| 77 | 122 | if ( strpos( $key, $cookie ) !== false ) { |
| 78 | - // Logged in! | |
| 123 | + powered_cache_add_cache_miss_header( "User logged-in" ); | |
| 79 | 124 | return; |
| 80 | 125 | } |
| 81 | 126 | } |
| 127 | + | |
| 128 | + // Check if the user has commented on the site | |
| 129 | + foreach ( $comment_cookies as $cookie ) { | |
| 130 | + if ( strpos( $key, $cookie ) !== false ) { | |
| 131 | + powered_cache_add_cache_miss_header( "User left a comment" ); | |
| 132 | + return; | |
| 133 | + } | |
| 134 | + } | |
| 82 | 135 | } |
| 83 | - } | |
| 84 | 136 | |
| 85 | - | |
| 86 | - if ( ! empty( $_COOKIE['powered_cache_commented_posts'] ) ) { | |
| 87 | - foreach ( $_COOKIE['powered_cache_commented_posts'] as $path ) { | |
| 88 | - if ( rtrim( $path, '/' ) === rtrim( $_SERVER['REQUEST_URI'], '/' ) ) { | |
| 89 | - // User commented on this post | |
| 90 | - return; | |
| 137 | + // Avoid caching pages with specific post comments from users | |
| 138 | + // it's a bit different from $comment_cookies since we are checking the post path | |
| 139 | + if ( ! empty( $_COOKIE['powered_cache_commented_posts'] ) ) { | |
| 140 | + foreach ( $_COOKIE['powered_cache_commented_posts'] as $path ) { | |
| 141 | + if ( rtrim( $path, '/' ) === rtrim( $_SERVER['REQUEST_URI'], '/' ) ) { | |
| 142 | + powered_cache_add_cache_miss_header( "User commented" ); | |
| 143 | + return; | |
| 144 | + } | |
| 91 | 145 | } |
| 92 | 146 | } |
| 93 | 147 | } |
| 94 | 148 | |
| 95 | - // don't cache specific cookie | |
| 96 | - if ( ! empty( $GLOBALS['powered_cache_options']['rejected_cookies'] ) ) { | |
| 97 | - $rejected_cookies = preg_split( '#(\r\n|\r|\n)#', $GLOBALS['powered_cache_options']['rejected_cookies'] ); | |
| 149 | + // Skip caching if there are specific rejected cookies, regardless of logged-in status | |
| 150 | + if ( ! empty( $powered_cache_rejected_cookies ) ) { | |
| 151 | + $rejected_cookies = array_diff( $powered_cache_rejected_cookies, $wp_cookies, $comment_cookies, ['powered_cache_commented_posts'] ); | |
| 98 | 152 | $rejected_cookies = implode( '|', $rejected_cookies ); |
| 99 | 153 | if ( preg_match( '#(' . $rejected_cookies . ')#', var_export( $_COOKIE, true ) ) ) { |
| 154 | + powered_cache_add_cache_miss_header( "Rejected cookie" ); | |
| 100 | 155 | return; |
| 101 | 156 | } |
| 102 | 157 | } |
| 103 | -} // End if(). | |
| 158 | +} | |
| 104 | 159 | |
| 105 | -// Deal with optional cache exceptions | |
| 106 | -if ( ! empty( $GLOBALS['powered_cache_options']['rejected_uri'] ) ) { | |
| 107 | - $exceptions = preg_split( '#(\r\n|\r|\n)#', $GLOBALS['powered_cache_options']['rejected_uri'] ); | |
| 108 | - | |
| 109 | - foreach ( $exceptions as $exception ) { | |
| 160 | +// Don't cache rejected pages | |
| 161 | +if ( ! empty( $powered_cache_rejected_uri ) ) { | |
| 162 | + foreach ( (array) $powered_cache_rejected_uri as $exception ) { | |
| 110 | 163 | if ( preg_match( '#^[\s]*$#', $exception ) ) { |
| 111 | 164 | continue; |
| 112 | 165 | } |
| 113 | 166 | |
| @@ -115,9 +168,15 @@ | ||
| 115 | 168 | if ( preg_match( '#^https?://#', $exception ) ) { |
| 116 | 169 | $exception = parse_url( $exception, PHP_URL_PATH ); |
| 117 | 170 | } |
| 118 | 171 | |
| 172 | + if ( empty( $exception ) ) { | |
| 173 | + continue; | |
| 174 | + } | |
| 175 | + | |
| 119 | 176 | if ( preg_match( '#^(' . $exception . ')$#', $_SERVER['REQUEST_URI'] ) ) { |
| 177 | + powered_cache_add_cache_miss_header( "Rejected page" ); | |
| 178 | + | |
| 120 | 179 | return; |
| 121 | 180 | } |
| 122 | 181 | } |
| 123 | 182 | } |
| @@ -122,16 +181,25 @@ | ||
| 122 | 181 | } |
| 123 | 182 | } |
| 124 | 183 | |
| 125 | 184 | |
| 126 | -$accepted_query_strings = array(); | |
| 127 | -// cache url with allowed query string | |
| 128 | -if ( ! empty( $GLOBALS['powered_cache_options']['accepted_query_strings'] ) ) { | |
| 129 | - $accepted_query_strings = preg_split( '#(\r\n|\r|\n)#', $GLOBALS['powered_cache_options']['accepted_query_strings'] ); | |
| 130 | -} | |
| 185 | +if ( ! empty( $_GET ) ) { | |
| 186 | + if ( ! isset( $powered_cache_ignored_query_strings ) ) { | |
| 187 | + $powered_cache_ignored_query_strings = []; | |
| 188 | + } | |
| 131 | 189 | |
| 132 | -if ( ! empty( $_GET ) && isset( $accepted_query_strings ) && is_array( $accepted_query_strings ) && ! array_intersect( array_keys( $_GET ), $accepted_query_strings ) ) { | |
| 133 | - return; | |
| 190 | + $query_params = array_diff_key( $_GET, array_flip( $powered_cache_ignored_query_strings ) ); | |
| 191 | + | |
| 192 | + if ( ! isset( $powered_cache_cache_query_strings ) ) { | |
| 193 | + $powered_cache_cache_query_strings = []; | |
| 194 | + } | |
| 195 | + | |
| 196 | + // don't cache when there is not allowed query parameter exists | |
| 197 | + if ( ! empty( $query_params ) && ! array_intersect_key( $_GET, array_flip( $powered_cache_cache_query_strings ) ) ) { | |
| 198 | + powered_cache_add_cache_miss_header( "Disallowed query parameter exists" ); | |
| 199 | + | |
| 200 | + return; | |
| 201 | + } | |
| 134 | 202 | } |
| 135 | 203 | |
| 136 | 204 | powered_cache_serve_cache(); |
| 137 | 205 | |
| @@ -139,12 +207,13 @@ | ||
| 139 | 207 | |
| 140 | 208 | /** |
| 141 | 209 | * Cache output before it goes to the browser |
| 142 | 210 | * |
| 143 | - * @param string $buffer | |
| 144 | - * @param int $flags | |
| 211 | + * @param string $buffer | |
| 212 | + * @param int $flags | |
| 213 | + * | |
| 214 | + * @return string | |
| 145 | 215 | * @since 1.0 |
| 146 | - * @return string | |
| 147 | 216 | */ |
| 148 | 217 | function powered_cache_page_buffer( $buffer, $flags ) { |
| 149 | 218 | global $powered_cache_start_time, $post; |
| 150 | 219 | |
| @@ -151,55 +220,98 @@ | ||
| 151 | 220 | if ( strlen( $buffer ) < 255 ) { |
| 152 | 221 | return $buffer; |
| 153 | 222 | } |
| 154 | 223 | |
| 155 | - // Don't cache search, 404, or password protected | |
| 156 | - if ( is_404() || is_search() || ! empty( $post->post_password ) ) { | |
| 224 | + // maybe we shouldn't cache template file has this constant | |
| 225 | + // dont check DONOTCACHEPAGE strictly some plugins define string instead bool flag | |
| 226 | + if ( defined( 'DONOTCACHEPAGE' ) && DONOTCACHEPAGE ) { | |
| 227 | + powered_cache_add_cache_miss_header( "DONOTCACHEPAGE defined" ); | |
| 228 | + | |
| 157 | 229 | return $buffer; |
| 158 | 230 | } |
| 159 | 231 | |
| 160 | - // maybe we shouldn't cache template file has this constant | |
| 161 | - if ( defined( 'DONOTCACHEPAGE' ) && true === DONOTCACHEPAGE ) { | |
| 232 | + if ( ! empty( $GLOBALS['powered_cache_options']['dev_mode'] ) ) { | |
| 233 | + powered_cache_add_cache_miss_header( "Dev mode is enabled" ); | |
| 234 | + | |
| 162 | 235 | return $buffer; |
| 163 | 236 | } |
| 164 | 237 | |
| 165 | - // plugins might want to use filter | |
| 166 | - if ( true !== apply_filters( 'powered_cache_page_cache_enable', true ) ) { | |
| 238 | + // Don't cache password protected posts | |
| 239 | + if ( ! empty( $post->post_password ) ) { | |
| 240 | + powered_cache_add_cache_miss_header( "Password protected posts are not cached" ); | |
| 241 | + | |
| 167 | 242 | return $buffer; |
| 168 | 243 | } |
| 169 | 244 | |
| 170 | - if ( ! defined( 'FS_CHMOD_DIR' ) ) { | |
| 171 | - define( 'FS_CHMOD_DIR', ( fileperms( ABSPATH ) & 0777 | 0755 ) ); | |
| 245 | + // Don't cache 404 results | |
| 246 | + if ( function_exists( 'is_404' ) && is_404() ) { | |
| 247 | + powered_cache_add_cache_miss_header( "404 pages are not cached" ); | |
| 248 | + | |
| 249 | + return $buffer; | |
| 172 | 250 | } |
| 173 | 251 | |
| 174 | - if ( ! defined( 'FS_CHMOD_FILE' ) ) { | |
| 175 | - define( 'FS_CHMOD_FILE', ( fileperms( ABSPATH . 'index.php' ) & 0777 | 0644 ) ); | |
| 252 | + // Don't cache search results | |
| 253 | + if ( function_exists( 'is_search' ) && is_search() ) { | |
| 254 | + powered_cache_add_cache_miss_header( "Search result page is not cached" ); | |
| 255 | + | |
| 256 | + return $buffer; | |
| 176 | 257 | } |
| 177 | 258 | |
| 178 | - include_once ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php'; | |
| 179 | - include_once ABSPATH . 'wp-admin/includes/class-wp-filesystem-direct.php'; | |
| 259 | + /** | |
| 260 | + * Filter whether to enable page cache for this request | |
| 261 | + * | |
| 262 | + * @hook powered_cache_page_cache_enable | |
| 263 | + * | |
| 264 | + * @param {boolean} $enable true for caching | |
| 265 | + * | |
| 266 | + * @since 1.0 | |
| 267 | + */ | |
| 268 | + if ( true !== apply_filters( 'powered_cache_page_cache_enable', true ) ) { | |
| 269 | + powered_cache_add_cache_miss_header( "Page Cache not enabled for this post" ); | |
| 180 | 270 | |
| 181 | - $filesystem = new WP_Filesystem_Direct( new StdClass() ); | |
| 271 | + return $buffer; | |
| 272 | + } | |
| 182 | 273 | |
| 183 | - if ( ! function_exists( 'powered_cache_get_cache_dir' ) ) { | |
| 274 | + // only cache when http ok | |
| 275 | + if ( 200 !== http_response_code() ) { | |
| 276 | + powered_cache_add_cache_miss_header( "Response code is not 200" ); | |
| 277 | + | |
| 184 | 278 | return $buffer; |
| 185 | 279 | } |
| 186 | 280 | |
| 281 | + if ( ! function_exists( '\PoweredCache\Utils\get_cache_dir' ) ) { | |
| 282 | + return $buffer; | |
| 283 | + } | |
| 284 | + | |
| 187 | 285 | // Make sure we can read/write files and that proper folders exist |
| 188 | - if ( ! $filesystem->exists( untrailingslashit( powered_cache_get_cache_dir() ) ) ) { | |
| 189 | - if ( ! $filesystem->mkdir( untrailingslashit( powered_cache_get_cache_dir() ) ) ) { | |
| 286 | + if ( ! file_exists( untrailingslashit( \PoweredCache\Utils\get_cache_dir() ) ) ) { | |
| 287 | + if ( ! @mkdir( untrailingslashit( \PoweredCache\Utils\get_cache_dir() ) ) ) { | |
| 190 | 288 | // Can not cache! |
| 289 | + powered_cache_add_cache_miss_header( "The cache directory does not exist for storing cached output" ); | |
| 290 | + | |
| 191 | 291 | return $buffer; |
| 192 | 292 | } |
| 193 | 293 | } |
| 194 | 294 | |
| 195 | - if ( ! $filesystem->exists( powered_cache_get_page_cache_dir() ) ) { | |
| 196 | - if ( ! $filesystem->mkdir( powered_cache_get_page_cache_dir() ) ) { | |
| 295 | + if ( ! file_exists( \PoweredCache\Utils\get_page_cache_dir() ) ) { | |
| 296 | + if ( ! @mkdir( \PoweredCache\Utils\get_page_cache_dir() ) ) { | |
| 197 | 297 | // Can not cache! |
| 298 | + powered_cache_add_cache_miss_header( "The page cache directory does not exist for storing cached output" ); | |
| 299 | + | |
| 198 | 300 | return $buffer; |
| 199 | 301 | } |
| 200 | 302 | } |
| 201 | 303 | |
| 304 | + /** | |
| 305 | + * Filters HTML buffer | |
| 306 | + * | |
| 307 | + * @hook powered_cache_page_caching_buffer | |
| 308 | + * | |
| 309 | + * @param {string} $buffer Output buffer. | |
| 310 | + * | |
| 311 | + * @return {string} New value. | |
| 312 | + * @since 1.0 | |
| 313 | + */ | |
| 202 | 314 | $buffer = apply_filters( 'powered_cache_page_caching_buffer', $buffer ); |
| 203 | 315 | |
| 204 | 316 | $url_path = powered_cache_get_url_path(); |
| 205 | 317 | |
| @@ -204,16 +316,16 @@ | ||
| 204 | 316 | $url_path = powered_cache_get_url_path(); |
| 205 | 317 | |
| 206 | 318 | $dirs = explode( '/', $url_path ); |
| 207 | 319 | |
| 208 | - $path = untrailingslashit( powered_cache_get_page_cache_dir() ); | |
| 320 | + $path = untrailingslashit( \PoweredCache\Utils\get_page_cache_dir() ); | |
| 209 | 321 | |
| 210 | 322 | foreach ( $dirs as $dir ) { |
| 211 | 323 | if ( ! empty( $dir ) ) { |
| 212 | 324 | $path .= '/' . $dir; |
| 213 | 325 | |
| 214 | - if ( ! $filesystem->exists( $path ) ) { | |
| 215 | - if ( ! $filesystem->mkdir( $path ) ) { | |
| 326 | + if ( ! file_exists( $path ) ) { | |
| 327 | + if ( ! @mkdir( $path ) ) { | |
| 216 | 328 | // Can not cache! |
| 217 | 329 | return $buffer; |
| 218 | 330 | } |
| 219 | 331 | } |
| @@ -219,15 +331,13 @@ | ||
| 219 | 331 | } |
| 220 | 332 | } |
| 221 | 333 | } |
| 222 | 334 | |
| 223 | - | |
| 224 | 335 | $modified_time = time(); // Make sure modified time is consistent |
| 225 | 336 | $generation_time = number_format( microtime( true ) - $powered_cache_start_time, 3 ); |
| 226 | 337 | |
| 227 | - // Prevent mixed content when there's an http request but the site URL uses https | |
| 228 | - // @see https://github.com/tlovett1/simple-cache/issues/67 | |
| 229 | 338 | $home_url = get_home_url(); |
| 339 | + // prevent mixed content | |
| 230 | 340 | if ( ! is_ssl() && 'https' === strtolower( parse_url( $home_url, PHP_URL_SCHEME ) ) ) { |
| 231 | 341 | $https_home_url = $home_url; |
| 232 | 342 | $http_home_url = str_replace( 'https://', 'http://', $https_home_url ); |
| 233 | 343 | $buffer = str_replace( esc_url( $http_home_url ), esc_url( $https_home_url ), $buffer ); |
| @@ -232,12 +342,12 @@ | ||
| 232 | 342 | $http_home_url = str_replace( 'https://', 'http://', $https_home_url ); |
| 233 | 343 | $buffer = str_replace( esc_url( $http_home_url ), esc_url( $https_home_url ), $buffer ); |
| 234 | 344 | } |
| 235 | 345 | |
| 236 | - if ( array_key_exists( 'show_cache_message', $GLOBALS['powered_cache_options'] ) && true === $GLOBALS['powered_cache_options']['show_cache_message'] ) { | |
| 346 | + if ( array_key_exists( 'cache_footprint', $GLOBALS['powered_cache_options'] ) && true === $GLOBALS['powered_cache_options']['cache_footprint'] ) { | |
| 237 | 347 | if ( preg_match( '#</html>#i', $buffer ) ) { |
| 238 | 348 | $buffer .= PHP_EOL; |
| 239 | - $buffer .= "<!-- Cache served by PoweredCache -->"; | |
| 349 | + $buffer .= "<!-- Cache served by Powered Cache -->"; | |
| 240 | 350 | $buffer .= PHP_EOL; |
| 241 | 351 | $buffer .= "<!-- If you like fast websites like this, visit: https://poweredcache.com -->"; |
| 242 | 352 | $buffer .= PHP_EOL; |
| 243 | 353 | $buffer .= "<!-- Last modified: " . gmdate( 'D, d M Y H:i:s', $modified_time ) . " GMT -->"; |
| @@ -243,32 +353,57 @@ | ||
| 243 | 353 | $buffer .= "<!-- Last modified: " . gmdate( 'D, d M Y H:i:s', $modified_time ) . " GMT -->"; |
| 244 | 354 | $buffer .= PHP_EOL; |
| 245 | 355 | $buffer .= "<!-- Dynamic page generated in $generation_time -->"; |
| 246 | 356 | $buffer .= PHP_EOL; |
| 357 | + if ( false !== stripos( $_SERVER['HTTP_USER_AGENT'], 'Powered Cache Preloader' ) ) { | |
| 358 | + $buffer .= "<!-- This page is preloaded by Powered Cache Preloader -->"; | |
| 359 | + $buffer .= PHP_EOL; | |
| 360 | + } | |
| 247 | 361 | } |
| 248 | 362 | } |
| 249 | 363 | |
| 250 | 364 | |
| 251 | 365 | $meta_file_name = 'meta.php'; |
| 252 | - $meta_file = '<?php exit; ?>' . PHP_EOL; | |
| 366 | + $meta_file = '<?php exit; ?>' . PHP_EOL; | |
| 253 | 367 | |
| 254 | 368 | $meta_params = array(); // holds to metadata for cached file |
| 255 | 369 | |
| 256 | - $response_headers = powered_cache_get_response_headers(); | |
| 370 | + $response_headers = \PoweredCache\Utils\get_response_headers(); | |
| 257 | 371 | |
| 258 | 372 | foreach ( (array) $response_headers as $key => $value ) { |
| 259 | 373 | $meta_params['headers'][ $key ] = "$key: $value"; |
| 260 | 374 | } |
| 261 | 375 | |
| 262 | - $meta_params = apply_filters( 'powered_cache_page_cache_meta_params', $meta_params, $response_headers ); | |
| 263 | - $meta_file_contents = $meta_file . serialize( $meta_params ); | |
| 376 | + /** | |
| 377 | + * Filters meta parameters. | |
| 378 | + * | |
| 379 | + * @hook powered_cache_page_cache_meta_params | |
| 380 | + * | |
| 381 | + * @param {array} $meta_params Meta parameters. | |
| 382 | + * @param {array} $response_headers Supported response header list. | |
| 383 | + * | |
| 384 | + * @return {array} New value. | |
| 385 | + * @since 1.2 | |
| 386 | + */ | |
| 387 | + $meta_params = apply_filters( 'powered_cache_page_cache_meta_params', $meta_params, $response_headers ); | |
| 388 | + $meta_file_contents = $meta_file . json_encode( $meta_params ); | |
| 264 | 389 | |
| 390 | + /** | |
| 391 | + * Filters meta file contents. | |
| 392 | + * | |
| 393 | + * @hook powered_cache_page_cache_meta_info | |
| 394 | + * | |
| 395 | + * @param {string} $meta_file_contents The content of the meta file.* | |
| 396 | + * | |
| 397 | + * @return {array} New value. | |
| 398 | + * @since 1.2 | |
| 399 | + */ | |
| 265 | 400 | $meta_file_contents = apply_filters( 'powered_cache_page_cache_meta_info', $meta_file_contents ); |
| 266 | 401 | |
| 267 | - $filesystem->put_contents( $path . '/' . $meta_file_name, $meta_file_contents, FS_CHMOD_FILE ); | |
| 268 | - $filesystem->touch( $path . '/' . $meta_file_name, $modified_time ); | |
| 402 | + file_put_contents( $path . '/' . $meta_file_name, $meta_file_contents ); | |
| 403 | + touch( $path . '/' . $meta_file_name, $modified_time ); | |
| 269 | 404 | |
| 270 | - if ( isset( $meta_params['headers']['Content-Type'] ) ) { | |
| 405 | + if ( ! empty( $meta_params['headers']['Content-Type'] ) ) { | |
| 271 | 406 | $index_name = powered_cache_index_file( $meta_params['headers']['Content-Type'] ); |
| 272 | 407 | } else { |
| 273 | 408 | $index_name = powered_cache_index_file(); |
| 274 | 409 | } |
| @@ -273,19 +408,30 @@ | ||
| 273 | 408 | $index_name = powered_cache_index_file(); |
| 274 | 409 | } |
| 275 | 410 | |
| 276 | 411 | if ( $GLOBALS['powered_cache_options']['gzip_compression'] && function_exists( 'gzencode' ) ) { |
| 277 | - $filesystem->put_contents( $path . '/' . $index_name, gzencode( $buffer, 3 ), FS_CHMOD_FILE ); | |
| 278 | - $filesystem->touch( $path . '/' . $index_name, $modified_time ); | |
| 412 | + file_put_contents( $path . '/' . $index_name, gzencode( $buffer, 3 ) ); | |
| 413 | + touch( $path . '/' . $index_name, $modified_time ); | |
| 279 | 414 | } else { |
| 280 | - $filesystem->put_contents( $path . '/' . $index_name, $buffer, FS_CHMOD_FILE ); | |
| 281 | - $filesystem->touch( $path . '/' . $index_name, $modified_time ); | |
| 415 | + file_put_contents( $path . '/' . $index_name, $buffer ); | |
| 416 | + touch( $path . '/' . $index_name, $modified_time ); | |
| 282 | 417 | } |
| 283 | 418 | |
| 419 | + /** | |
| 420 | + * Fires after caching a page. | |
| 421 | + * | |
| 422 | + * @hook powered_cache_page_cached | |
| 423 | + * | |
| 424 | + * @param {string} $buffer HTML Output. | |
| 425 | + * | |
| 426 | + * @since 1.0 | |
| 427 | + */ | |
| 284 | 428 | do_action( 'powered_cache_page_cached', $buffer ); |
| 285 | 429 | |
| 286 | 430 | header( 'Cache-Control: no-cache' ); // Check back every time to see if re-download is necessary |
| 287 | 431 | |
| 432 | + header( 'X-Powered-Cache: MISS' ); | |
| 433 | + | |
| 288 | 434 | header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s', $modified_time ) . ' GMT' ); |
| 289 | 435 | |
| 290 | 436 | if ( function_exists( 'ob_gzhandler' ) && $GLOBALS['powered_cache_options']['gzip_compression'] ) { |
| 291 | 437 | return ob_gzhandler( $buffer, $flags ); |
| @@ -304,30 +450,40 @@ | ||
| 304 | 450 | global $powered_cache_slash_check; |
| 305 | 451 | |
| 306 | 452 | $path = rtrim( $GLOBALS['powered_cache_options']['cache_location'], '/' ) . '/powered-cache/' . rtrim( powered_cache_get_url_path(), '/' ) . '/'; |
| 307 | 453 | |
| 308 | - $meta_file = $path.'/meta.php'; | |
| 454 | + $meta_file = $path . '/meta.php'; | |
| 309 | 455 | |
| 456 | + $header_params = []; | |
| 457 | + $content_type = 'text/html'; | |
| 310 | 458 | |
| 311 | 459 | if ( @file_exists( $meta_file ) ) { |
| 312 | 460 | $meta_contents = trim( file_get_contents( $meta_file ) ); |
| 313 | 461 | $meta_contents = str_replace( '<?php exit; ?>', '', $meta_contents ); |
| 314 | - $meta_params = unserialize( trim( $meta_contents ) ); | |
| 462 | + $meta_params = json_decode( trim( $meta_contents ), true ); | |
| 315 | 463 | $header_params = $meta_params['headers']; |
| 316 | 464 | } |
| 317 | 465 | |
| 318 | - $content_type = @$header_params['Content-Type']; | |
| 466 | + if ( ! empty( $header_params['Content-Type'] ) ) { | |
| 467 | + $content_type = $header_params['Content-Type']; | |
| 468 | + } | |
| 319 | 469 | |
| 470 | + | |
| 320 | 471 | $file_name = powered_cache_index_file( $content_type ); |
| 321 | - $file_path = $path.$file_name; | |
| 472 | + $file_path = $path . $file_name; | |
| 322 | 473 | |
| 474 | + // check file exists? | |
| 475 | + if ( ! file_exists( $file_path ) ) { | |
| 476 | + return; | |
| 477 | + } | |
| 478 | + | |
| 323 | 479 | $modified_time = (int) @filemtime( $file_path ); |
| 324 | 480 | |
| 325 | 481 | header( 'Cache-Control: no-cache' ); // Check back in an hour |
| 326 | 482 | |
| 327 | 483 | if ( ! empty( $modified_time ) && ! empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) && strtotime( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) === $modified_time ) { |
| 328 | - header( $_SERVER['SERVER_PROTOCOL'] . ' 304 Not Modified', true, 304 ); | |
| 329 | - exit; | |
| 484 | + header( $_SERVER['SERVER_PROTOCOL'] . ' 304 Not Modified', true, 304 ); | |
| 485 | + exit; | |
| 330 | 486 | } |
| 331 | 487 | |
| 332 | 488 | // trailingslash check |
| 333 | 489 | if ( isset( $powered_cache_slash_check ) && $powered_cache_slash_check ) { |
| @@ -347,8 +503,10 @@ | ||
| 347 | 503 | } |
| 348 | 504 | } |
| 349 | 505 | |
| 350 | 506 | header( 'X-Powered-Cache: PHP' ); |
| 507 | + header( 'X-Cache-Enabled: true' ); | |
| 508 | + header( sprintf( "age: %d", time() - filemtime( $file_path ) ) ); | |
| 351 | 509 | |
| 352 | 510 | if ( function_exists( 'gzencode' ) && $GLOBALS['powered_cache_options']['gzip_compression'] ) { |
| 353 | 511 | header( 'Content-Encoding: gzip' ); |
| 354 | 512 | } |
| @@ -361,15 +519,17 @@ | ||
| 361 | 519 | |
| 362 | 520 | /** |
| 363 | 521 | * Get URL path for caching |
| 364 | 522 | * |
| 523 | + * @return string | |
| 365 | 524 | * @since 1.0 |
| 366 | - * @return string | |
| 525 | + * @since 2.0 $request_uri without query string | |
| 367 | 526 | */ |
| 368 | 527 | function powered_cache_get_url_path() { |
| 369 | - | |
| 370 | - $host = ( isset( $_SERVER['HTTP_HOST'] ) ) ? $_SERVER['HTTP_HOST'] : ''; | |
| 371 | - $request_uri = preg_replace( '/(\/+)/', '/', $_SERVER['REQUEST_URI'] ); | |
| 528 | + $host = ( isset( $_SERVER['HTTP_HOST'] ) ? $_SERVER['HTTP_HOST'] : '' ); | |
| 529 | + $request_uri = explode( '?', $_SERVER['REQUEST_URI'] ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized | |
| 530 | + $request_uri = reset( $request_uri ); | |
| 531 | + $request_uri = preg_replace( '/(\/+)/', '/', $request_uri ); | |
| 372 | 532 | $request_uri = str_replace( '..', '', preg_replace( '/[ <>\'\"\r\n\t\(\)]/', '', $request_uri ) ); |
| 373 | 533 | |
| 374 | 534 | return rtrim( $host, '/' ) . $request_uri; |
| 375 | 535 | } |
| @@ -393,88 +553,130 @@ | ||
| 393 | 553 | * Determines cache file names |
| 394 | 554 | * |
| 395 | 555 | * @param string $content_type |
| 396 | 556 | * |
| 557 | + * @return string | |
| 558 | + * @since 1.2 `$content_type` | |
| 397 | 559 | * @since 1.0 |
| 398 | - * @since 1.2 `$content_type` | |
| 399 | - * @return string | |
| 400 | 560 | */ |
| 401 | 561 | function powered_cache_index_file( $content_type = 'text/html' ) { |
| 562 | + global $powered_cache_mobile_browsers, $powered_cache_mobile_prefixes, $powered_cache_vary_cookies, $powered_cache_cache_query_strings; | |
| 563 | + | |
| 402 | 564 | $file_name = 'index'; |
| 403 | 565 | |
| 404 | - if ( powered_cache_is_ssl() ) { | |
| 566 | + if ( is_ssl() ) { | |
| 405 | 567 | $file_name .= '-https'; |
| 406 | 568 | } |
| 407 | 569 | |
| 408 | 570 | // separate file for mobile cache |
| 409 | - if ( isset( $GLOBALS['powered_cache_options']['cache_mobile'], $GLOBALS['powered_cache_options']['cache_mobile_separate_file'] ) | |
| 410 | - && true === $GLOBALS['powered_cache_options']['cache_mobile'] | |
| 411 | - && true === $GLOBALS['powered_cache_options']['cache_mobile_separate_file'] | |
| 412 | - ) { | |
| 413 | - | |
| 414 | - global $powered_cache_mobile_browsers, $powered_cache_mobile_prefixes; | |
| 415 | - | |
| 571 | + if ( ! empty( $GLOBALS['powered_cache_options']['cache_mobile'] ) && ! empty( $GLOBALS['powered_cache_options']['cache_mobile_separate_file'] ) ) { | |
| 416 | 572 | $mobile_browsers = addcslashes( implode( '|', preg_split( '/[\s*,\s*]*,+[\s*,\s*]*/', $powered_cache_mobile_browsers ) ), ' ' ); |
| 417 | 573 | $mobile_prefixes = addcslashes( implode( '|', preg_split( '/[\s*,\s*]*,+[\s*,\s*]*/', $powered_cache_mobile_prefixes ) ), ' ' ); |
| 418 | 574 | |
| 419 | 575 | // Don't cache if mobile detection is activated |
| 420 | - if ( (preg_match( '#^.*(' . $mobile_browsers . ').*#i', $_SERVER['HTTP_USER_AGENT'] ) || preg_match( '#^(' . $mobile_prefixes . ').*#i', substr( $_SERVER['HTTP_USER_AGENT'], 0, 4 ) ) ) ) { | |
| 576 | + if ( ( preg_match( '#^.*(' . $mobile_browsers . ').*#i', $_SERVER['HTTP_USER_AGENT'] ) || preg_match( '#^(' . $mobile_prefixes . ').*#i', substr( $_SERVER['HTTP_USER_AGENT'], 0, 4 ) ) ) ) { | |
| 421 | 577 | $file_name .= '-mobile'; |
| 422 | 578 | } |
| 423 | 579 | } |
| 424 | 580 | |
| 425 | - if ( isset( $GLOBALS['powered_cache_options']['loggedin_user_cache'] ) | |
| 426 | - && true === $GLOBALS['powered_cache_options']['loggedin_user_cache'] | |
| 427 | - ) { | |
| 581 | + if ( ! empty( $GLOBALS['powered_cache_options']['loggedin_user_cache'] ) ) { | |
| 428 | 582 | $usr_cookie = powered_cache_get_user_cookie(); |
| 429 | 583 | if ( false !== $usr_cookie ) { |
| 430 | 584 | $cookie_info = explode( '|', $usr_cookie ); |
| 431 | 585 | |
| 432 | - // user specific cache dir | |
| 433 | - $file_name .= '_' . $cookie_info[0] . '-' . $cookie_info[1]; | |
| 586 | + // user specific cache index | |
| 587 | + $file_name .= '-user_' . $cookie_info[0] . '-' . substr( sha1( $cookie_info[0] ), 0, 6 ); | |
| 434 | 588 | } |
| 435 | 589 | } |
| 436 | 590 | |
| 591 | + // change filename based on vary cookies | |
| 592 | + if ( ! empty( $powered_cache_vary_cookies ) ) { | |
| 593 | + $cookie_file_name = ''; | |
| 594 | + foreach ( $powered_cache_vary_cookies as $key => $vary_cookie ) { | |
| 595 | + if ( is_array( $vary_cookie ) ) { | |
| 596 | + if ( ! empty( $_COOKIE[ $key ] ) ) { | |
| 597 | + foreach ( $vary_cookie as $vary_sub_cookie ) { | |
| 598 | + if ( isset( $_COOKIE[ $key ][ $vary_sub_cookie ] ) ) { | |
| 599 | + $cookie_value = preg_replace( '/[^A-Za-z0-9. -]/', '', $_COOKIE[ $key ][ $vary_sub_cookie ] ); | |
| 600 | + $cookie_file_name .= strtolower( $key . $vary_sub_cookie . $cookie_value ); | |
| 601 | + } | |
| 602 | + } | |
| 603 | + } | |
| 604 | + | |
| 605 | + continue; | |
| 606 | + } | |
| 607 | + | |
| 608 | + if ( isset( $_COOKIE[ $vary_cookie ] ) && ! empty( $_COOKIE[ $vary_cookie ] ) ) { | |
| 609 | + $cookie_value = preg_replace( '/[^A-Za-z0-9. -]/', '', $_COOKIE[ $vary_cookie ] ); | |
| 610 | + $cookie_file_name .= strtolower( $vary_cookie . $cookie_value ); | |
| 611 | + } | |
| 612 | + } | |
| 613 | + | |
| 614 | + if ( ! empty( $cookie_file_name ) ) { | |
| 615 | + /** | |
| 616 | + * Hashing for no particular reason | |
| 617 | + * preg_replace( '/[^a-z0-9_\-]/', '', strtolower( $cookie_file_name ) ) | |
| 618 | + * can create a messy filename | |
| 619 | + */ | |
| 620 | + $file_name .= '-' . sha1( $cookie_file_name ); | |
| 621 | + } | |
| 622 | + | |
| 623 | + } | |
| 624 | + | |
| 625 | + // change filename for provided cache query string | |
| 437 | 626 | if ( ! empty( $_SERVER['QUERY_STRING'] ) ) { |
| 438 | - $file_name .= '_' . sha1( $_SERVER['QUERY_STRING'] ); | |
| 627 | + parse_str( $_SERVER['QUERY_STRING'], $query_string ); | |
| 628 | + $qs_variable = ''; | |
| 629 | + sort( $powered_cache_cache_query_strings ); | |
| 630 | + foreach ( $powered_cache_cache_query_strings as $query_parameter ) { | |
| 631 | + if ( isset( $query_string[ $query_parameter ] ) ) { | |
| 632 | + $qs_variable .= '_' . $query_parameter; | |
| 633 | + $qs_variable .= is_array( $query_string[ $query_parameter ] ) ? implode( '|', $query_string[ $query_parameter ] ) : $query_string[ $query_parameter ]; | |
| 634 | + } | |
| 635 | + } | |
| 636 | + | |
| 637 | + if ( ! empty( $qs_variable ) ) { | |
| 638 | + $qs_variable = 'query_' . $qs_variable; | |
| 639 | + $file_name .= '_' . sha1( $qs_variable ); | |
| 640 | + } | |
| 439 | 641 | } |
| 440 | 642 | |
| 643 | + | |
| 441 | 644 | /** |
| 442 | 645 | * Content-Type is not always text/html (like feed, wp-json etc..) |
| 443 | - * We should respect proper format! | |
| 444 | - * Alternatively, we can add multiple level lookup for apache/nginx config | |
| 445 | - * but that makes things much more complicated. | |
| 646 | + * Adding hash by simply escaping from rewrite matches in htaccess or nginx | |
| 647 | + * Different types of content should be serve via PHP, in order to restore header info | |
| 446 | 648 | */ |
| 447 | 649 | if ( false === strpos( $content_type, 'text/html' ) ) { |
| 448 | 650 | $file_name .= '-' . substr( sha1( $content_type ), 0, 6 ); |
| 449 | 651 | } |
| 450 | 652 | |
| 653 | + | |
| 451 | 654 | $file_name .= '.html'; |
| 452 | 655 | |
| 453 | 656 | if ( function_exists( 'gzencode' ) && $GLOBALS['powered_cache_options']['gzip_compression'] ) { |
| 454 | - $file_name .= '_gzip'; | |
| 657 | + $file_name .= '.gz'; | |
| 455 | 658 | } |
| 456 | 659 | |
| 457 | 660 | return $file_name; |
| 458 | 661 | } |
| 459 | 662 | |
| 460 | - | |
| 461 | 663 | /** |
| 462 | - * is_ssl moved load.php in WP 4.6 but we support WP 4.1+ | |
| 664 | + * Add cache miss header and reason | |
| 463 | 665 | * |
| 464 | - * @return bool | |
| 666 | + * @param string $reason Cache Miss info | |
| 667 | + * | |
| 668 | + * @since 2.2 | |
| 465 | 669 | */ |
| 466 | -function powered_cache_is_ssl() { | |
| 467 | - if ( isset( $_SERVER['HTTPS'] ) ) { | |
| 468 | - if ( 'on' == strtolower( $_SERVER['HTTPS'] ) ) { | |
| 469 | - return true; | |
| 470 | - } | |
| 670 | +function powered_cache_add_cache_miss_header( $reason ) { | |
| 671 | + if ( headers_sent() ) { | |
| 672 | + return; | |
| 673 | + } | |
| 471 | 674 | |
| 472 | - if ( '1' == $_SERVER['HTTPS'] ) { | |
| 473 | - return true; | |
| 474 | - } | |
| 475 | - } elseif ( isset( $_SERVER['SERVER_PORT'] ) && ( '443' == $_SERVER['SERVER_PORT'] ) ) { | |
| 476 | - return true; | |
| 675 | + header( 'X-Powered-Cache: MISS' ); | |
| 676 | + | |
| 677 | + if ( ( defined( 'POWERED_CACHE_ENABLE_LOG' ) && POWERED_CACHE_ENABLE_LOG ) | |
| 678 | + || ( defined( 'POWERED_CACHE_MISS_REASON' ) && POWERED_CACHE_MISS_REASON ) | |
| 679 | + ) { | |
| 680 | + header( "X-Powered-Cache-Miss-Reason: $reason" ); | |
| 477 | 681 | } |
| 478 | - | |
| 479 | - return false; | |
| 480 | 682 | } |
