installed plugin W3 Total Cache version 2.3.2

wp-content/plugins/w3-total-cache/Util_WpmuBlogmap.php

@@ -0,0 +1,157 @@
+<?php
+namespace W3TC;
+
+class Util_WpmuBlogmap {
+	static $content_by_filename = array();
+	/**
+	 * Returns blogmap filename by home url
+	 *
+	 * @param string  $blog_home_url
+	 * @return string
+	 */
+	static public function blogmap_filename_by_home_url( $blog_home_url ) {
+		if ( !defined( 'W3TC_BLOG_LEVELS' ) )
+			return W3TC_CACHE_BLOGMAP_FILENAME;
+		else {
+			$filename = dirname( W3TC_CACHE_BLOGMAP_FILENAME ) . '/' .
+				basename( W3TC_CACHE_BLOGMAP_FILENAME, '.json' ) . '/';
+
+			$s = md5( $blog_home_url );
+			for ( $n = 0; $n < W3TC_BLOG_LEVELS; $n++ )
+				$filename .= substr( $s, $n, 1 ) . '/';
+
+			return $filename . basename( W3TC_CACHE_BLOGMAP_FILENAME );
+		}
+	}
+
+	/**
+	 * Returns blog_id by home url
+	 * If database not initialized yet - returns 0
+	 *
+	 * @return integer
+	 */
+	static public function get_current_blog_data() {
+		$host = Util_Environment::host();
+
+		// subdomain
+		if ( Util_Environment::is_wpmu_subdomain() ) {
+			$blog_data = Util_WpmuBlogmap::try_get_current_blog_data( $host );
+			if ( is_null( $blog_data ) )
+				$GLOBALS['w3tc_blogmap_register_new_item'] = $host;
+
+			return $blog_data;
+		} else {
+			// try subdir blog
+			$url = $host . ( isset( $_SERVER['REQUEST_URI'] ) ? $_SERVER['REQUEST_URI'] : '' ); // phpcs:ignore
+			$pos = strpos( $url, '?' );
+			if ( $pos !== false )
+				$url = substr( $url, 0, $pos );
+
+			$url = rtrim( $url, '/' );
+			$start_url = $url;
+
+			for ( ;; ) {
+				$blog_data = Util_WpmuBlogmap::try_get_current_blog_data( $url );
+				if ( !is_null( $blog_data ) )
+					return $blog_data;
+				$pos = strrpos( $url, '/' );
+				if ( $pos === false )
+					break;
+
+				$url = rtrim( substr( $url, 0, $pos ), '/' );
+			}
+
+			$GLOBALS['w3tc_blogmap_register_new_item'] = $start_url;
+			return null;
+		}
+	}
+
+
+
+	static public function try_get_current_blog_data( $url ) {
+		$filename = Util_WpmuBlogmap::blogmap_filename_by_home_url( $url );
+
+		if ( isset( self::$content_by_filename[$filename] ) ) {
+			$blog_data = self::$content_by_filename[$filename];
+		} else {
+			$blog_data = null;
+
+			if ( file_exists( $filename ) ) {
+				$data = file_get_contents( $filename );
+				$blog_data = @json_decode( $data, true );
+
+				if ( is_array( $blog_data ) )
+					self::$content_by_filename[$filename] = $blog_data;
+			}
+		}
+
+		if ( isset( $blog_data[$url] ) )
+			return $blog_data[$url];
+
+		return null;
+	}
+
+	/**
+	 * Registers new blog url in url=>blog mapfile
+	 */
+	static public function register_new_item( $config ) {
+		if ( !isset( $GLOBALS['current_blog'] ) ) {
+			return false;
+		}
+
+
+		// find blog_home_url
+		if ( Util_Environment::is_wpmu_subdomain() ) {
+			$blog_home_url = $GLOBALS['w3tc_blogmap_register_new_item'];
+		} else {
+			$home_url = rtrim( get_home_url(), '/' );
+			if ( substr( $home_url, 0, 7 ) == 'http://' ) {
+				$home_url = substr( $home_url, 7 );
+			} else if ( substr( $home_url, 0, 8 ) == 'https://' ) {
+				$home_url = substr( $home_url, 8 );
+			}
+
+			if ( substr( $GLOBALS['w3tc_blogmap_register_new_item'], 0,
+					strlen( $home_url ) ) == $home_url ) {
+				$blog_home_url = $home_url;
+			} else {
+				$blog_home_url = $GLOBALS['w3tc_blogmap_register_new_item'];
+			}
+		}
+
+
+		// write contents
+		$filename = Util_WpmuBlogmap::blogmap_filename_by_home_url( $blog_home_url );
+
+		if ( !@file_exists( $filename ) ) {
+			$blog_ids = array();
+		} else {
+			$data = @file_get_contents( $filename );
+			$blog_ids = @json_decode( $data, true );
+			if ( !is_array( $blog_ids ) ) {
+				$blog_ids = array();
+			}
+		}
+
+		if ( isset( $blog_ids[$blog_home_url] ) ) {
+			return false;
+		}
+
+		$data = $config->get_boolean( 'common.force_master' ) ? 'm' : 'c';
+		$blog_home_url = preg_replace( '/[^a-zA-Z0-9\+\.%~!:()\/\-\_]/', '', $blog_home_url );
+		$blog_ids[$blog_home_url] = $data . $GLOBALS['current_blog']->blog_id;
+
+		$data = json_encode( $blog_ids );
+
+		try {
+			Util_File::file_put_contents_atomic( $filename, $data );
+		} catch ( \Exception $ex ) {
+			return false;
+		}
+
+		unset( self::$content_by_filename[$filename] );
+		unset( $GLOBALS['w3tc_blogmap_register_new_item'] );
+
+		return true;
+	}
+}