installed plugin W3 Total Cache version 2.3.2
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Gitium
202
wp-content/plugins/w3-total-cache/Minify_Core.php
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202
wp-content/plugins/w3-total-cache/Minify_Core.php
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<?php
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namespace W3TC;
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/**
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* component of shared code used by minify
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*/
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class Minify_Core {
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/**
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* Encode an array of files into a filename containing all files.
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*/
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static public function urls_for_minification_to_minify_filename( $files, $type ) {
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$v = get_option( 'w3tc_minify' );
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$minify_filenames = @json_decode( $v, true );
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if ( !is_array( $minify_filenames ) )
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$minify_filenames = array();
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$files_string = json_encode( $files );
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$key = substr( md5( $files_string ), 0, 5 );
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// collision protection
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if ( isset( $minify_filenames[$key] ) ) {
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$files_stored = $minify_filenames[$key];
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if ( json_encode( $files_stored ) != $files_string ) {
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$key = md5( $files_string );
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}
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}
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$minify_filename = $key . '.' . $type;
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$minify_filename = apply_filters(
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'w3tc_minify_urls_for_minification_to_minify_filename',
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$minify_filename, $files, $type );
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$minify_filenames[$minify_filename] = $files;
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update_option( 'w3tc_minify', json_encode( $minify_filenames ), false );
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return $minify_filename;
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}
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/**
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* Decode a minify auto filename into an array of files.
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*
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* @param unknown $compressed
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* @param unknown $type
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* @return array
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*/
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static public function minify_filename_to_urls_for_minification( $filename, $type ) {
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$v = get_option( 'w3tc_minify' );
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$minify_filenames = @json_decode( $v, true );
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if ( !is_array( $minify_filenames ) )
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$minify_filenames = array();
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$minify_filename = $filename . '.' . $type;
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if ( !isset( $minify_filenames[$minify_filename] ) )
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return array();
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$urls_unverified = $minify_filenames[$minify_filename];
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$urls = array();
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foreach ( $urls_unverified as $file ) {
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$verified = false;
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if ( Util_Environment::is_url( $file ) ) {
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$c = Dispatcher::config();
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$external = $c->get_array( 'minify.cache.files' );
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$external_regexp = $c->get_boolean( 'minify.cache.files_regexp' );
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foreach ( $external as $ext ) {
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if ( empty( $ext ) )
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continue;
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if ( !$external_regexp &&
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preg_match( '~^' . Util_Environment::get_url_regexp( $ext ) . '~', $file ) &&
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!$verified ) {
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$verified = true;
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}
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if ( $external_regexp &&
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preg_match( '~' . $ext . '~', $file ) && !$verified ) {
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$verified = true;
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}
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}
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if ( !$verified ) {
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Minify_Core::debug_error( sprintf( 'Remote file not in external files/libraries list: "%s"', $file ) );
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}
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} elseif ( /* no .. */ strpos( $file, '..' ) != false
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// no "//"
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|| strpos( $file, '//' ) !== false
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// no "\"
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|| ( strpos( $file, '\\' ) !== false && strtoupper( substr( PHP_OS, 0, 3 ) ) != 'WIN' )
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// no "./"
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|| preg_match( '/(?:^|[^\\.])\\.\\//', $file )
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/* no unwanted chars */ ||
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!preg_match( '/^[a-zA-Z0-9_.\\/-]|[\\\\]+$/', $file ) ) {
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$verified = false;
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Minify_Core::debug_error( sprintf( 'File path invalid: "%s"', $file ) );
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} else {
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$verified = true;
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}
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if ( $verified )
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$urls[] = $file;
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}
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return $urls;
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}
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static public function minified_url( $minify_filename ) {
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$path = Util_Environment::cache_blog_minify_dir();
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$filename = $path . '/' . $minify_filename;
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$c = Dispatcher::config();
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if ( Util_Rule::can_check_rules() && $c->get_boolean( 'minify.rewrite' ) ) {
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return Util_Environment::filename_to_url( $filename );
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}
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return home_url( '?w3tc_minify=' . $minify_filename );
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}
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/**
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* Sends error response
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*
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* @param string $error
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* @param boolean $handle
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* @param integer $status
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* @return void
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*/
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static public function debug_error( $error ) {
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$c = Dispatcher::config();
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$debug = $c->get_boolean( 'minify.debug' );
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if ( $debug ) {
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Minify_Core::log( $error );
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echo "\r\n/* " . esc_html( $error ) . " */\r\n";
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}
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}
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/**
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* Log
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*
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* @param string $msg
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* @return bool
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*/
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static public function log( $msg ) {
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$data = sprintf(
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"[%s] [%s] [%s] %s\n",
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date( 'r' ),
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isset( $_SERVER['REQUEST_URI'] ) ? esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '',
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! empty( $_SERVER['HTTP_REFERER'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_REFERER'] ) ) : '-',
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$msg
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);
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$data = strtr( $data, '<>', '..' );
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$filename = Util_Debug::log_filename( 'minify' );
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return @file_put_contents( $filename, $data, FILE_APPEND );
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}
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public function get_usage_statistics_cache_config() {
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$c = Dispatcher::config();
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$engine = $c->get_string( 'minify.engine' );
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switch ( $engine ) {
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case 'memcached':
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$engineConfig = array(
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'servers' => $c->get_array( 'minify.memcached.servers' ),
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'persistent' => $c->get_boolean( 'minify.memcached.persistent' ),
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'aws_autodiscovery' =>
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$c->get_boolean( 'minify.memcached.aws_autodiscovery' ),
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'username' => $c->get_string( 'minify.memcached.username' ),
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'password' => $c->get_string( 'minify.memcached.password' )
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);
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break;
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case 'redis':
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$engineConfig = array(
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'servers' => $c->get_array( 'minify.redis.servers' ),
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'verify_tls_certificates' => $c->get_boolean( 'minify.redis.verify_tls_certificates' ),
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'persistent' => $c->get_boolean( 'minify.redis.persistent' ),
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'timeout' => $c->get_integer( 'minify.redis.timeout' ),
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'retry_interval' => $c->get_integer( 'minify.redis.retry_interval' ),
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'read_timeout' => $c->get_integer( 'minify.redis.read_timeout' ),
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'dbid' => $c->get_integer( 'minify.redis.dbid' ),
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'password' => $c->get_string( 'minify.redis.password' )
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);
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break;
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default:
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$engineConfig = array();
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}
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$engineConfig['engine'] = $engine;
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return $engineConfig;
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}
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}
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