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<?php exit; |
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/** |
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* Autoptimize's magic 404 handler. |
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* |
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* Configure your webserver to have requests for files that are no longer in |
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* /wp-content/cache/autoptimize/ to redirect to this file. AO's .htaccess file |
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* will have a "Errordocument:" directive to automatically do this. |
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* |
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* This file has simple logic to redirect to the "fallback" files that are |
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* created automatically by AO to avoid visitors seeing broken pages or |
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* Googlebot getting utterly confused. |
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* |
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* Error logging is off by default (don't want to flood your php errorlog, but |
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* can be enabled by this code snippet: |
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* |
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* add_filter( 'autoptimize_filter_cache_fallback_log_errors', '__return_true' ); |
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* |
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* Warning: the fallback files might not apply to all pages, so this is a just |
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* a temporary solution, you really should clear any page cache to avoid requests |
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* to files that don't exist in AO's cache. |
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*/ |
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|
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$original_request = strtok( $_SERVER['REQUEST_URI'], '?' ); |
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|
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if ( strpos( $original_request, 'uucss/uucss-' ) !== false ) { |
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$original_request = preg_replace( '/uucss\/uucss-[a-z0-9]{32}-/', 'css/', $original_request ); |
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} |
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|
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$fallback_target = preg_replace( '/(.*)_(?:[a-z0-9]{32})\.(js|css)$/', '${1}_fallback.${2}', $original_request ); |
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$ao_cache_dir = '<!--ao-cache-dir-->'; |
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$js_or_css = pathinfo( $original_request, PATHINFO_EXTENSION ); |
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|
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// add multisite logic. |
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$multisite = false; |
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if ( true === $multisite ) { |
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preg_match( '#\/([0-9]{1,5})\/(?:js|css)\/[a-z0-9]*_fallback\.(?:js|css)$#', $fallback_target, $child_site_id ); |
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$ao_root_cache_dir = preg_replace( '#[0-9]*\/$#', '', $ao_cache_dir ); |
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$ao_cache_dir = $ao_root_cache_dir . $child_site_id[1] . '/'; |
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} |
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|
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$fallback_path = $ao_cache_dir . $js_or_css . '/<!--ao-cachefile-prefix-->fallback.' . $js_or_css; |
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|
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if ( $original_request !== $fallback_target && file_exists( $fallback_path ) ) { |
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// error_log( 'Autoptimize file ' . $original_request . ' not found, using fallback instead.' ); |
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header( 'HTTP/1.1 301 Moved Permanently' ); |
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header( 'Location: ' . $fallback_target ); |
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} else { |
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// error_log( 'Autoptimize file ' . $original_request . ' not found, sending 410 gone response.' ); |
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header( 'HTTP/1.1 410 Gone' ); |
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} |
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|
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exit(); |
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|
