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1772 lines
83 KiB
1772 lines
83 KiB
// httpdProxyHandler.java
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// (C) 2004 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 2004 on http://yacy.net
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// Contributions:
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// [AS] Alexander Schier: Blacklist (404 response for AGIS hosts)
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// [TL] Timo Leise: url-wildcards for blacklists
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/*
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Class documentation:
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This class is a servlet to the httpd daemon. It is accessed each time
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an URL in a GET, HEAD or POST command contains the whole host information
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or a host is given in the header host field of an HTTP/1.0 / HTTP/1.1
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command.
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Transparency is maintained, whenever appropriate. We change header
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attributes if necessary for the indexing mechanism; i.e. we do not
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support gzip-ed encoding. We also do not support unrealistic
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'expires' values that would force a cache to be flushed immediately
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pragma non-cache attributes are supported
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*/
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package de.anomic.http;
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import java.io.BufferedInputStream;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.io.PrintWriter;
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import java.io.UnsupportedEncodingException;
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import java.io.Writer;
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import java.net.BindException;
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import java.net.ConnectException;
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import java.net.InetAddress;
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import java.net.MalformedURLException;
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import java.net.NoRouteToHostException;
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import java.net.Socket;
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import java.net.SocketTimeoutException;
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import java.net.UnknownHostException;
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import java.util.Arrays;
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import java.util.Date;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Properties;
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import java.util.logging.FileHandler;
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import java.util.logging.Level;
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import java.util.logging.LogManager;
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import java.util.logging.Logger;
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import java.util.zip.GZIPOutputStream;
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import de.anomic.htmlFilter.htmlFilterContentTransformer;
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import de.anomic.htmlFilter.htmlFilterTransformer;
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import de.anomic.htmlFilter.htmlFilterWriter;
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import de.anomic.index.indexReferenceBlacklist;
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import de.anomic.plasma.plasmaHTCache;
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import de.anomic.plasma.plasmaParser;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.plasma.cache.IResourceInfo;
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import de.anomic.plasma.cache.http.ResourceInfo;
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import de.anomic.server.serverCore;
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import de.anomic.server.serverDomains;
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import de.anomic.server.serverFileUtils;
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import de.anomic.server.serverObjects;
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import de.anomic.server.logging.serverLog;
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import de.anomic.server.logging.serverMiniLogFormatter;
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import de.anomic.yacy.yacyCore;
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import de.anomic.yacy.yacyURL;
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public final class httpdProxyHandler {
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// static variables
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// can only be instantiated upon first instantiation of this class object
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private static plasmaSwitchboard switchboard = null;
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public static HashSet<String> yellowList = null;
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private static int timeout = 30000;
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private static boolean yacyTrigger = true;
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public static boolean isTransparentProxy = false;
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private static Process redirectorProcess = null;
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private static boolean redirectorEnabled = false;
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private static PrintWriter redirectorWriter = null;
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private static BufferedReader redirectorReader = null;
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private static htmlFilterTransformer transformer = null;
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/**
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* *The* remote Proxy configuration
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*/
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private static httpRemoteProxyConfig remoteProxyConfig = null;
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private static final String proxyUserAgent = "yacy (" + HttpClient.getSystemOST() +") yacy.net";
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private static File htRootPath = null;
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//private Properties connectionProperties = null;
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// creating a logger
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private static final serverLog theLogger = new serverLog("PROXY");
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private static boolean doAccessLogging = false;
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/**
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* Do logging configuration for special proxy access log file
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*/
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static {
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// Doing logger initialization
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try {
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serverLog.logInfo("PROXY","Configuring proxy access logging ...");
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// getting the logging manager
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LogManager manager = LogManager.getLogManager();
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String className = httpdProxyHandler.class.getName();
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// determining if proxy access logging is enabled
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String enabled = manager.getProperty("de.anomic.http.httpdProxyHandler.logging.enabled");
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if ("true".equalsIgnoreCase(enabled)) {
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// reading out some needed configuration properties
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int limit = 1024*1024, count = 20;
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String pattern = manager.getProperty(className + ".logging.FileHandler.pattern");
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if (pattern == null) pattern = "DATA/LOG/proxyAccess%u%g.log";
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String limitStr = manager.getProperty(className + ".logging.FileHandler.limit");
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if (limitStr != null) try { limit = Integer.valueOf(limitStr).intValue(); } catch (NumberFormatException e) {}
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String countStr = manager.getProperty(className + ".logging.FileHandler.count");
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if (countStr != null) try { count = Integer.valueOf(countStr).intValue(); } catch (NumberFormatException e) {}
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// creating the proxy access logger
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Logger proxyLogger = Logger.getLogger("PROXY.access");
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proxyLogger.setUseParentHandlers(false);
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proxyLogger.setLevel(Level.FINEST);
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FileHandler txtLog = new FileHandler(pattern,limit,count,true);
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txtLog.setFormatter(new serverMiniLogFormatter());
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txtLog.setLevel(Level.FINEST);
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proxyLogger.addHandler(txtLog);
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doAccessLogging = true;
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serverLog.logInfo("PROXY","Proxy access logging configuration done." +
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"\n\tFilename: " + pattern +
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"\n\tLimit: " + limitStr +
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"\n\tCount: " + countStr);
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} else {
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serverLog.logInfo("PROXY","Proxy access logging is deactivated.");
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}
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} catch (Exception e) {
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serverLog.logSevere("PROXY","Unable to configure proxy access logging.",e);
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}
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switchboard = plasmaSwitchboard.getSwitchboard();
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if (switchboard != null) {
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isTransparentProxy = Boolean.valueOf(switchboard.getConfig("isTransparentProxy","false")).booleanValue();
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// set timeout
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timeout = Integer.parseInt(switchboard.getConfig("proxy.clientTimeout", "10000"));
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// create a htRootPath: system pages
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htRootPath = new File(switchboard.getRootPath(), switchboard.getConfig("htRootPath","htroot"));
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if (!(htRootPath.exists())) htRootPath.mkdir();
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// load a transformer
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transformer = new htmlFilterContentTransformer();
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transformer.init(new File(switchboard.getRootPath(), switchboard.getConfig(plasmaSwitchboard.LIST_BLUE, "")).toString());
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String f;
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// load the yellow-list
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f = switchboard.getConfig("proxyYellowList", null);
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if (f != null) {
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yellowList = serverFileUtils.loadList(new File(f));
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theLogger.logConfig("loaded yellow-list from file " + f + ", " + yellowList.size() + " entries");
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} else {
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yellowList = new HashSet<String>();
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}
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String redirectorPath = switchboard.getConfig("externalRedirector", "");
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if (redirectorPath.length() > 0 && redirectorEnabled == false){
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try {
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redirectorProcess=Runtime.getRuntime().exec(redirectorPath);
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redirectorWriter = new PrintWriter(redirectorProcess.getOutputStream());
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redirectorReader = new BufferedReader(new InputStreamReader(redirectorProcess.getInputStream()));
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redirectorEnabled=true;
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} catch (IOException e) {
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System.out.println("redirector not Found");
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}
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}
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}
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}
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/**
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* Special logger instance for proxy access logging much similar
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* to the squid access.log file
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*/
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private static final serverLog proxyLog = new serverLog("PROXY.access");
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/**
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* Reusable {@link StringBuilder} for logging
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*/
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private static final StringBuilder logMessage = new StringBuilder();
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/**
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* Reusable {@link StringBuffer} to generate the useragent string
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*/
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private static final StringBuffer userAgentStr = new StringBuffer();
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private static String domain(String host) {
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String domain = host;
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int pos = domain.lastIndexOf(".");
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if (pos >= 0) {
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// truncate from last part
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domain = domain.substring(0, pos);
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pos = domain.lastIndexOf(".");
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if (pos >= 0) {
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// truncate from first part
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domain = domain.substring(pos + 1);
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}
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}
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return domain;
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}
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public static void handleOutgoingCookies(httpHeader requestHeader, String targethost, String clienthost) {
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/*
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The syntax for the header is:
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cookie = "Cookie:" cookie-version
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1*((";" | ",") cookie-value)
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cookie-value = NAME "=" VALUE [";" path] [";" domain]
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cookie-version = "$Version" "=" value
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NAME = attr
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VALUE = value
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path = "$Path" "=" value
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domain = "$Domain" "=" value
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*/
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if (requestHeader.containsKey(httpHeader.COOKIE)) {
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Object[] entry = new Object[]{new Date(), clienthost, requestHeader.getMultiple(httpHeader.COOKIE)};
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synchronized(switchboard.outgoingCookies) {
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switchboard.outgoingCookies.put(targethost, entry);
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}
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}
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}
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public static void handleIncomingCookies(httpHeader respondHeader, String serverhost, String targetclient) {
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/*
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The syntax for the Set-Cookie response header is
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set-cookie = "Set-Cookie:" cookies
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cookies = 1#cookie
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cookie = NAME "=" VALUE *(";" cookie-av)
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NAME = attr
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VALUE = value
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cookie-av = "Comment" "=" value
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| "Domain" "=" value
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| "Max-Age" "=" value
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| "Path" "=" value
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| "Secure"
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| "Version" "=" 1*DIGIT
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*/
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if (respondHeader.containsKey(httpHeader.SET_COOKIE)) {
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Object[] entry = new Object[]{new Date(), targetclient, respondHeader.getMultiple(httpHeader.SET_COOKIE)};
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synchronized(switchboard.incomingCookies) {
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switchboard.incomingCookies.put(serverhost, entry);
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}
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}
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}
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/**
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* @param conProp a collection of properties about the connection, like URL
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* @param requestHeader The header lines of the connection from the request
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* @param respond the OutputStream to the client
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* @see de.anomic.http.httpdHandler#doGet(java.util.Properties, de.anomic.http.httpHeader, java.io.OutputStream)
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*/
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public static void doGet(Properties conProp, httpHeader requestHeader, OutputStream respond) {
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try {
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// remembering the starting time of the request
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final Date requestDate = new Date(); // remember the time...
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conProp.put(httpHeader.CONNECTION_PROP_REQUEST_START,new Long(requestDate.getTime()));
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if (yacyTrigger) de.anomic.yacy.yacyCore.triggerOnlineAction();
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switchboard.proxyLastAccess = System.currentTimeMillis();
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// using an ByteCount OutputStream to count the send bytes (needed for the logfile)
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respond = new httpdByteCountOutputStream(respond,conProp.getProperty(httpHeader.CONNECTION_PROP_REQUESTLINE).length() + 2,"PROXY");
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String host = conProp.getProperty(httpHeader.CONNECTION_PROP_HOST);
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String path = conProp.getProperty(httpHeader.CONNECTION_PROP_PATH); // always starts with leading '/'
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final String args = conProp.getProperty(httpHeader.CONNECTION_PROP_ARGS); // may be null if no args were given
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final String ip = conProp.getProperty(httpHeader.CONNECTION_PROP_CLIENTIP); // the ip from the connecting peer
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int pos=0;
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int port=0;
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yacyURL url = null;
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try {
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url = httpHeader.getRequestURL(conProp);
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//redirector
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if (redirectorEnabled){
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synchronized(redirectorProcess){
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redirectorWriter.println(url.toNormalform(false, true));
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redirectorWriter.flush();
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}
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String newUrl = redirectorReader.readLine();
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if (!newUrl.equals("")) {
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try {
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url = new yacyURL(newUrl, null);
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} catch(MalformedURLException e){}//just keep the old one
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}
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conProp.setProperty(httpHeader.CONNECTION_PROP_HOST, url.getHost()+":"+url.getPort());
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conProp.setProperty(httpHeader.CONNECTION_PROP_PATH, url.getPath());
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requestHeader.put(httpHeader.HOST, url.getHost()+":"+url.getPort());
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requestHeader.put(httpHeader.CONNECTION_PROP_PATH, url.getPath());
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}
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} catch (MalformedURLException e) {
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String errorMsg = "ERROR: internal error with url generation: host=" +
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host + ", port=" + port + ", path=" + path + ", args=" + args;
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serverLog.logSevere("PROXY", errorMsg);
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httpd.sendRespondError(conProp,respond,4,501,null,errorMsg,e);
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return;
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}
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if ((pos = host.indexOf(":")) < 0) {
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port = 80;
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} else {
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port = Integer.parseInt(host.substring(pos + 1));
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host = host.substring(0, pos);
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}
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String ext;
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if ((pos = path.lastIndexOf('.')) < 0) {
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ext = "";
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} else {
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ext = path.substring(pos + 1).toLowerCase();
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}
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// check the blacklist
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// blacklist idea inspired by [AS]:
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// respond a 404 for all AGIS ("all you get is shit") servers
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String hostlow = host.toLowerCase();
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if (args != null) { path = path + "?" + args; }
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if (plasmaSwitchboard.urlBlacklist.isListed(indexReferenceBlacklist.BLACKLIST_PROXY, hostlow, path)) {
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httpd.sendRespondError(conProp,respond,4,403,null,
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"URL '" + hostlow + "' blocked by yacy proxy (blacklisted)",null);
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theLogger.logInfo("AGIS blocking of host '" + hostlow + "'");
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return;
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}
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// handle outgoing cookies
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handleOutgoingCookies(requestHeader, host, ip);
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// set another userAgent, if not yellowlisted
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if ((yellowList != null) && (!(yellowList.contains(domain(hostlow))))) {
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// change the User-Agent
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requestHeader.put(httpHeader.USER_AGENT, generateUserAgent(requestHeader));
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}
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addXForwardedForHeader(conProp, requestHeader);
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// decide whether to use a cache entry or connect to the network
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File cacheFile = plasmaHTCache.getCachePath(url);
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httpHeader cachedResponseHeader = null;
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ResourceInfo cachedResInfo = (ResourceInfo) plasmaHTCache.loadResourceInfo(url);
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if (cachedResInfo != null) {
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// set the new request header (needed by function shallUseCacheForProxy)
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cachedResInfo.setRequestHeader(requestHeader);
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// get the cached response header
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cachedResponseHeader = cachedResInfo.getResponseHeader();
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}
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boolean cacheExists = cacheFile.isFile() && (cachedResponseHeader != null);
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// why are files unzipped upon arrival? why not zip all files in cache?
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// This follows from the following premises
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// (a) no file shall be unzip-ed more than once to prevent unnecessary computing time
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// (b) old cache entries shall be comparable with refill-entries to detect/distinguish case 3+4
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// (c) the indexing mechanism needs files unzip-ed, a schedule could do that later
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// case b and c contradicts, if we use a scheduler, because files in a stale cache would be unzipped
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// and the newly arrival would be zipped and would have to be unzipped upon load. But then the
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// scheduler is superfluous. Therefore the only reminding case is
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// (d) cached files shall be either all zipped or unzipped
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// case d contradicts with a, because files need to be unzipped for indexing. Therefore
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// the only remaining case is to unzip files right upon load. Thats what we do here.
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|
|
|
// finally use existing cache if appropriate
|
|
// here we must decide weather or not to save the data
|
|
// to a cache
|
|
// we distinguish four CACHE STATE cases:
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// 1. cache fill
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|
// 2. cache fresh - no refill
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// 3. cache stale - refill - necessary
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// 4. cache stale - refill - superfluous
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|
// in two of these cases we trigger a scheduler to handle newly arrived files:
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// case 1 and case 3
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plasmaHTCache.Entry cacheEntry = (cachedResponseHeader == null) ? null :
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plasmaHTCache.newEntry(
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requestDate, // init date
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0, // crawling depth
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url, // url
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|
"", // name of the url is unknown
|
|
//requestHeader, // request headers
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"200 OK", // request status
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//cachedResponseHeader, // response headers
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cachedResInfo,
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null, // initiator
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switchboard.defaultProxyProfile // profile
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|
);
|
|
if (yacyCore.getOnlineMode() == 0) {
|
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if (cacheExists) {
|
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fulfillRequestFromCache(conProp,url,ext,requestHeader,cachedResponseHeader,cacheFile,respond);
|
|
} else {
|
|
httpd.sendRespondError(conProp,respond,4,404,null,"URL not availabe in Cache",null);
|
|
}
|
|
} else if (cacheExists && cacheEntry.shallUseCacheForProxy()) {
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fulfillRequestFromCache(conProp,url,ext,requestHeader,cachedResponseHeader,cacheFile,respond);
|
|
} else {
|
|
fulfillRequestFromWeb(conProp,url,ext,requestHeader,cachedResponseHeader,cacheFile,respond);
|
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}
|
|
|
|
} catch (Exception e) {
|
|
try {
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|
String exTxt = e.getMessage();
|
|
if ((exTxt!=null)&&(exTxt.startsWith("Socket closed"))) {
|
|
forceConnectionClose(conProp);
|
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} else if (!conProp.containsKey(httpHeader.CONNECTION_PROP_PROXY_RESPOND_HEADER)) {
|
|
String errorMsg = "Unexpected Error. " + e.getClass().getName() + ": " + e.getMessage();
|
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httpd.sendRespondError(conProp,respond,4,501,null,errorMsg,e);
|
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theLogger.logSevere(errorMsg);
|
|
} else {
|
|
forceConnectionClose(conProp);
|
|
}
|
|
} catch (Exception ee) {
|
|
forceConnectionClose(conProp);
|
|
}
|
|
} finally {
|
|
try { respond.flush(); } catch (Exception e) {}
|
|
if (respond instanceof httpdByteCountOutputStream) ((httpdByteCountOutputStream)respond).finish();
|
|
|
|
conProp.put(httpHeader.CONNECTION_PROP_REQUEST_END,new Long(System.currentTimeMillis()));
|
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conProp.put(httpHeader.CONNECTION_PROP_PROXY_RESPOND_SIZE,new Long(((httpdByteCountOutputStream)respond).getCount()));
|
|
logProxyAccess(conProp);
|
|
}
|
|
}
|
|
|
|
private static void fulfillRequestFromWeb(Properties conProp, yacyURL url,String ext, httpHeader requestHeader, httpHeader cachedResponseHeader, File cacheFile, OutputStream respond) {
|
|
|
|
GZIPOutputStream gzippedOut = null;
|
|
Writer hfos = null;
|
|
|
|
JakartaCommonsHttpResponse res = null;
|
|
try {
|
|
|
|
String host = conProp.getProperty(httpHeader.CONNECTION_PROP_HOST);
|
|
String path = conProp.getProperty(httpHeader.CONNECTION_PROP_PATH); // always starts with leading '/'
|
|
String args = conProp.getProperty(httpHeader.CONNECTION_PROP_ARGS); // may be null if no args were given
|
|
String ip = conProp.getProperty(httpHeader.CONNECTION_PROP_CLIENTIP); // the ip from the connecting peer
|
|
String httpVer = conProp.getProperty(httpHeader.CONNECTION_PROP_HTTP_VER); // the ip from the connecting peer
|
|
|
|
int port, pos;
|
|
if ((pos = host.indexOf(":")) < 0) {
|
|
port = 80;
|
|
} else {
|
|
port = Integer.parseInt(host.substring(pos + 1));
|
|
host = host.substring(0, pos);
|
|
}
|
|
|
|
// resolve yacy and yacyh domains
|
|
String yAddress = (httpd.alternativeResolver == null) ? null : httpd.alternativeResolver.resolve(host);
|
|
|
|
// re-calc the url path
|
|
String remotePath = (args == null) ? path : (path + "?" + args); // with leading '/'
|
|
|
|
// attach possible yacy-sublevel-domain
|
|
if ((yAddress != null) &&
|
|
((pos = yAddress.indexOf("/")) >= 0) &&
|
|
(!(remotePath.startsWith("/env"))) // this is the special path, staying always at root-level
|
|
) remotePath = yAddress.substring(pos) + remotePath;
|
|
|
|
prepareRequestHeader(requestHeader, httpVer);
|
|
|
|
// setup HTTP-client
|
|
final JakartaCommonsHttpClient client = new JakartaCommonsHttpClient(timeout, requestHeader, null);
|
|
client.setFollowRedirects(false);
|
|
|
|
final String connectHost = hostPart(host, port, yAddress);
|
|
final String getUrl = "http://"+ connectHost + remotePath;
|
|
client.setProxy(getProxyConfig(connectHost));
|
|
|
|
// send request
|
|
try {
|
|
res = client.GET(getUrl);
|
|
conProp.put(httpHeader.CONNECTION_PROP_CLIENT_REQUEST_HEADER,requestHeader);
|
|
|
|
final httpHeader responseHeader = res.getResponseHeader();
|
|
// determine if it's an internal error of the httpc
|
|
if (responseHeader.size() == 0) {
|
|
throw new Exception(res.getStatusLine());
|
|
}
|
|
|
|
final httpChunkedOutputStream chunkedOut = setTransferEncoding(conProp, responseHeader, res.getStatusCode(), respond);
|
|
|
|
// if (((String)requestHeader.get(httpHeader.ACCEPT_ENCODING,"")).indexOf("gzip") != -1) {
|
|
// zipped = new GZIPOutputStream((chunked != null) ? chunked : respond);
|
|
// res.responseHeader.put(httpHeader.CONTENT_ENCODING, "gzip");
|
|
// res.responseHeader.remove(httpHeader.CONTENT_LENGTH);
|
|
// }
|
|
|
|
// the cache does either not exist or is (supposed to be) stale
|
|
long sizeBeforeDelete = -1;
|
|
if ((cacheFile.isFile()) && (cachedResponseHeader != null)) {
|
|
// delete the cache
|
|
sizeBeforeDelete = cacheFile.length();
|
|
plasmaHTCache.deleteURLfromCache(url);
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"TCP_REFRESH_MISS");
|
|
}
|
|
|
|
// reserver cache entry
|
|
Date requestDate = new Date(((Long)conProp.get(httpHeader.CONNECTION_PROP_REQUEST_START)).longValue());
|
|
IResourceInfo resInfo = new ResourceInfo(url,requestHeader,responseHeader);
|
|
plasmaHTCache.Entry cacheEntry = plasmaHTCache.newEntry(
|
|
requestDate,
|
|
0,
|
|
url,
|
|
"",
|
|
//requestHeader,
|
|
res.getStatusLine(),
|
|
//res.responseHeader,
|
|
resInfo,
|
|
null,
|
|
switchboard.defaultProxyProfile
|
|
);
|
|
|
|
// handle file types and make (possibly transforming) output stream
|
|
final OutputStream outStream = (gzippedOut != null) ? gzippedOut : ((chunkedOut != null)? chunkedOut : respond);
|
|
if (
|
|
(!transformer.isIdentityTransformer()) &&
|
|
(plasmaParser.supportedHTMLContent(url,responseHeader.mime()))
|
|
) {
|
|
// make a transformer
|
|
theLogger.logFine("create transformer for URL " + url);
|
|
//hfos = new htmlFilterOutputStream((gzippedOut != null) ? gzippedOut : ((chunkedOut != null)? chunkedOut : respond), null, transformer, (ext.length() == 0));
|
|
final String charSet = httpHeader.getCharSet(responseHeader);
|
|
hfos = new htmlFilterWriter(outStream,charSet, null, transformer, (ext.length() == 0));
|
|
} else {
|
|
// simply pass through without parsing
|
|
theLogger.logFine("create passthrough for URL " + url + ", extension '" + ext + "', mime-type '" + responseHeader.mime() + "'");
|
|
hfos = new OutputStreamWriter(outStream, httpHeader.getCharSet(res.getResponseHeader()));
|
|
}
|
|
|
|
// handle incoming cookies
|
|
handleIncomingCookies(responseHeader, host, ip);
|
|
|
|
prepareResponseHeader(responseHeader, res.getHttpVer());
|
|
|
|
// sending the respond header back to the client
|
|
if (chunkedOut != null) {
|
|
responseHeader.put(httpHeader.TRANSFER_ENCODING, "chunked");
|
|
}
|
|
|
|
httpd.sendRespondHeader(
|
|
conProp,
|
|
respond,
|
|
httpVer,
|
|
res.getStatusCode(),
|
|
res.getStatusLine().substring(4), // status text
|
|
responseHeader);
|
|
|
|
String storeError = cacheEntry.shallStoreCacheForProxy();
|
|
boolean storeHTCache = cacheEntry.profile().storeHTCache();
|
|
boolean isSupportedContent = plasmaParser.supportedContent(plasmaParser.PARSER_MODE_PROXY,cacheEntry.url(),cacheEntry.getMimeType());
|
|
if (
|
|
/*
|
|
* Now we store the response into the htcache directory if
|
|
* a) the response is cacheable AND
|
|
*/
|
|
(storeError == null) &&
|
|
/*
|
|
* b) the user has configured to use the htcache OR
|
|
* c) the content should be indexed
|
|
*/
|
|
((storeHTCache) || (isSupportedContent))
|
|
) {
|
|
final long contentLength = responseHeader.contentLength();
|
|
// we write a new cache entry
|
|
if ((contentLength > 0) && (contentLength < 1048576)) // if the length is known and < 1 MB
|
|
{
|
|
// ok, we don't write actually into a file, only to RAM, and schedule writing the file.
|
|
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
|
|
writeContent(res, new BufferedWriter(hfos), byteStream);
|
|
// cached bytes
|
|
byte[] cacheArray;
|
|
if(byteStream.size() > 0) {
|
|
cacheArray = byteStream.toByteArray();
|
|
} else {
|
|
cacheArray = null;
|
|
}
|
|
theLogger.logFine("writeContent of " + url + " produced cacheArray = " + ((cacheArray == null) ? "null" : ("size=" + cacheArray.length)));
|
|
|
|
if (hfos instanceof htmlFilterWriter) ((htmlFilterWriter) hfos).finalize();
|
|
|
|
if (sizeBeforeDelete == -1) {
|
|
// totally fresh file
|
|
//cacheEntry.status = plasmaHTCache.CACHE_FILL; // it's an insert
|
|
cacheEntry.setCacheArray(cacheArray);
|
|
plasmaHTCache.push(cacheEntry);
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"TCP_MISS");
|
|
} else if (sizeBeforeDelete == cacheArray.length) {
|
|
// before we came here we deleted a cache entry
|
|
cacheArray = null;
|
|
//cacheEntry.status = plasmaHTCache.CACHE_STALE_RELOAD_BAD;
|
|
//cacheManager.push(cacheEntry); // unnecessary update
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"TCP_REF_FAIL_HIT");
|
|
} else {
|
|
// before we came here we deleted a cache entry
|
|
//cacheEntry.status = plasmaHTCache.CACHE_STALE_RELOAD_GOOD;
|
|
cacheEntry.setCacheArray(cacheArray);
|
|
plasmaHTCache.push(cacheEntry); // necessary update, write response header to cache
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"TCP_REFRESH_MISS");
|
|
}
|
|
} else {
|
|
// the file is too big to cache it in the ram, or the size is unknown
|
|
// write to file right here.
|
|
cacheFile.getParentFile().mkdirs();
|
|
writeContent(res, new BufferedWriter(hfos), new FileOutputStream(cacheFile));
|
|
if (hfos instanceof htmlFilterWriter) ((htmlFilterWriter) hfos).finalize();
|
|
theLogger.logFine("for write-file of " + url + ": contentLength = " + contentLength + ", sizeBeforeDelete = " + sizeBeforeDelete);
|
|
plasmaHTCache.writeFileAnnouncement(cacheFile);
|
|
if (sizeBeforeDelete == -1) {
|
|
// totally fresh file
|
|
//cacheEntry.status = plasmaHTCache.CACHE_FILL; // it's an insert
|
|
plasmaHTCache.push(cacheEntry);
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"TCP_MISS");
|
|
} else if (sizeBeforeDelete == cacheFile.length()) {
|
|
// before we came here we deleted a cache entry
|
|
//cacheEntry.status = plasmaHTCache.CACHE_STALE_RELOAD_BAD;
|
|
//cacheManager.push(cacheEntry); // unnecessary update
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"TCP_REF_FAIL_HIT");
|
|
} else {
|
|
// before we came here we deleted a cache entry
|
|
//cacheEntry.status = plasmaHTCache.CACHE_STALE_RELOAD_GOOD;
|
|
plasmaHTCache.push(cacheEntry); // necessary update, write response header to cache
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"TCP_REFRESH_MISS");
|
|
}
|
|
// beware! all these writings will not fill the cacheEntry.cacheArray
|
|
// that means they are not available for the indexer (except they are scraped before)
|
|
}
|
|
} else {
|
|
// no caching
|
|
theLogger.logFine(cacheFile.toString() + " not cached." +
|
|
" StoreError=" + ((storeError==null)?"None":storeError) +
|
|
" StoreHTCache=" + storeHTCache +
|
|
" SupportetContent=" + isSupportedContent);
|
|
|
|
writeContent(res, new BufferedWriter(hfos));
|
|
if (hfos instanceof htmlFilterWriter) ((htmlFilterWriter) hfos).finalize();
|
|
/*if (sizeBeforeDelete == -1) {
|
|
// no old file and no load. just data passing
|
|
//cacheEntry.status = plasmaHTCache.CACHE_PASSING;
|
|
//cacheManager.push(cacheEntry);
|
|
} else {
|
|
// before we came here we deleted a cache entry
|
|
//cacheEntry.status = plasmaHTCache.CACHE_STALE_NO_RELOAD;
|
|
//cacheManager.push(cacheEntry);
|
|
}*/
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"TCP_MISS");
|
|
}
|
|
|
|
if (gzippedOut != null) {
|
|
gzippedOut.finish();
|
|
}
|
|
if (chunkedOut != null) {
|
|
chunkedOut.finish();
|
|
chunkedOut.flush();
|
|
}
|
|
} finally {
|
|
// if opened ...
|
|
if(res != null) {
|
|
// ... close connection
|
|
res.closeStream();
|
|
}
|
|
}
|
|
} catch (Exception e) {
|
|
// deleting cached content
|
|
if (cacheFile.exists()) cacheFile.delete();
|
|
handleProxyException(e,conProp,respond,url);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* determines in which form the response should be send and sets header accordingly
|
|
* if the content length is not set we need to use chunked content encoding
|
|
* Implemented:
|
|
* if !content-length
|
|
* switch httpVer
|
|
* case 0.9:
|
|
* case 1.0:
|
|
* close connection after transfer
|
|
* break;
|
|
* default:
|
|
* new ChunkedStream around respond
|
|
* end if
|
|
*
|
|
* @param conProp
|
|
* @param responseHeader
|
|
* @param statusCode
|
|
* @param respond
|
|
* @return
|
|
*/
|
|
private static httpChunkedOutputStream setTransferEncoding(Properties conProp, final httpHeader responseHeader,
|
|
int statusCode, OutputStream respond) {
|
|
final String httpVer = conProp.getProperty(httpHeader.CONNECTION_PROP_HTTP_VER);
|
|
httpChunkedOutputStream chunkedOut = null;
|
|
// gzipped response is ungzipped an therefor the length is unknown
|
|
if (responseHeader.gzip() || responseHeader.contentLength() < 0) {
|
|
// according to http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
|
|
// a 204,304 message must not contain a message body.
|
|
// Therefore we need to set the content-length to 0.
|
|
if (statusCode == 204 || statusCode == 304) {
|
|
responseHeader.put(httpHeader.CONTENT_LENGTH, "0");
|
|
} else {
|
|
if (httpVer.equals(httpHeader.HTTP_VERSION_0_9) || httpVer.equals(httpHeader.HTTP_VERSION_1_0)) {
|
|
forceConnectionClose(conProp);
|
|
} else {
|
|
chunkedOut = new httpChunkedOutputStream(respond);
|
|
}
|
|
responseHeader.remove(httpHeader.CONTENT_LENGTH);
|
|
}
|
|
}
|
|
return chunkedOut;
|
|
}
|
|
|
|
private static void fulfillRequestFromCache(
|
|
Properties conProp,
|
|
yacyURL url,
|
|
String ext,
|
|
httpHeader requestHeader,
|
|
httpHeader cachedResponseHeader,
|
|
File cacheFile,
|
|
OutputStream respond
|
|
) throws IOException {
|
|
|
|
String httpVer = conProp.getProperty(httpHeader.CONNECTION_PROP_HTTP_VER);
|
|
|
|
httpChunkedOutputStream chunkedOut = null;
|
|
GZIPOutputStream gzippedOut = null;
|
|
Object hfos = null;
|
|
|
|
// we respond on the request by using the cache, the cache is fresh
|
|
try {
|
|
prepareRequestHeader(cachedResponseHeader, httpVer);
|
|
|
|
// replace date field in old header by actual date, this is according to RFC
|
|
cachedResponseHeader.put(httpHeader.DATE, HttpClient.dateString(new Date()));
|
|
|
|
// if (((String)requestHeader.get(httpHeader.ACCEPT_ENCODING,"")).indexOf("gzip") != -1) {
|
|
// chunked = new httpChunkedOutputStream(respond);
|
|
// zipped = new GZIPOutputStream(chunked);
|
|
// cachedResponseHeader.put(httpHeader.TRANSFER_ENCODING, "chunked");
|
|
// cachedResponseHeader.put(httpHeader.CONTENT_ENCODING, "gzip");
|
|
// } else {
|
|
// maybe the content length is missing
|
|
// if (!(cachedResponseHeader.containsKey(httpHeader.CONTENT_LENGTH)))
|
|
// cachedResponseHeader.put(httpHeader.CONTENT_LENGTH, Long.toString(cacheFile.length()));
|
|
// }
|
|
|
|
// check if we can send a 304 instead the complete content
|
|
if (requestHeader.containsKey(httpHeader.IF_MODIFIED_SINCE)) {
|
|
// conditional request: freshness of cache for that condition was already
|
|
// checked within shallUseCache(). Now send only a 304 response
|
|
theLogger.logInfo("CACHE HIT/304 " + cacheFile.toString());
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"TCP_REFRESH_HIT");
|
|
|
|
// setting the content length header to 0
|
|
cachedResponseHeader.put(httpHeader.CONTENT_LENGTH, Integer.toString(0));
|
|
|
|
// send cached header with replaced date and added length
|
|
httpd.sendRespondHeader(conProp,respond,httpVer,304,cachedResponseHeader);
|
|
//respondHeader(respond, "304 OK", cachedResponseHeader); // respond with 'not modified'
|
|
} else {
|
|
// unconditional request: send content of cache
|
|
theLogger.logInfo("CACHE HIT/203 " + cacheFile.toString());
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"TCP_HIT");
|
|
|
|
// setting the content header to the proper length
|
|
cachedResponseHeader.put(httpHeader.CONTENT_LENGTH, Long.toString(cacheFile.length()));
|
|
|
|
// send cached header with replaced date and added length
|
|
httpd.sendRespondHeader(conProp,respond,httpVer,203,cachedResponseHeader);
|
|
//respondHeader(respond, "203 OK", cachedResponseHeader); // respond with 'non-authoritative'
|
|
|
|
// determine the content charset
|
|
String charSet = httpHeader.getCharSet(cachedResponseHeader);
|
|
|
|
// make a transformer
|
|
final OutputStream outStream = (gzippedOut != null) ? gzippedOut : ((chunkedOut != null)? chunkedOut : respond);
|
|
if (( !transformer.isIdentityTransformer()) &&
|
|
(ext == null || !plasmaParser.supportedHTMLFileExtContains(url)) &&
|
|
(plasmaParser.HTMLParsableMimeTypesContains(cachedResponseHeader.mime()))) {
|
|
hfos = new htmlFilterWriter(outStream, charSet, null, transformer, (ext.length() == 0));
|
|
} else {
|
|
hfos = outStream;
|
|
}
|
|
|
|
// send also the complete body now from the cache
|
|
// simply read the file and transfer to out socket
|
|
if (hfos instanceof OutputStream) {
|
|
serverFileUtils.copy(cacheFile,(OutputStream)hfos);
|
|
} else if (hfos instanceof Writer) {
|
|
serverFileUtils.copy(cacheFile,charSet,(Writer)hfos);
|
|
}
|
|
|
|
if (hfos instanceof htmlFilterWriter) ((htmlFilterWriter) hfos).finalize();
|
|
if (gzippedOut != null) gzippedOut.finish();
|
|
if (chunkedOut != null) chunkedOut.finish();
|
|
}
|
|
// that's it!
|
|
} catch (Exception e) {
|
|
// this happens if the client stops loading the file
|
|
// we do nothing here
|
|
if (conProp.containsKey(httpHeader.CONNECTION_PROP_PROXY_RESPOND_HEADER)) {
|
|
theLogger.logWarning("Error while trying to send cached message body.");
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PERSISTENT,"close");
|
|
} else {
|
|
httpd.sendRespondError(conProp,respond,4,503,"socket error: " + e.getMessage(),"socket error: " + e.getMessage(), e);
|
|
}
|
|
} finally {
|
|
try { respond.flush(); } catch (Exception e) {}
|
|
}
|
|
return;
|
|
}
|
|
|
|
public static void writeContent(JakartaCommonsHttpResponse res, BufferedWriter hfos) throws IOException, UnsupportedEncodingException {
|
|
try {
|
|
InputStream data = res.getDataAsStream();
|
|
if (data == null) return;
|
|
String charSet = httpHeader.getCharSet(res.getResponseHeader());
|
|
serverFileUtils.copyToWriter(new BufferedInputStream(data), hfos, charSet);
|
|
} finally {
|
|
res.closeStream();
|
|
}
|
|
}
|
|
|
|
public static void writeContent(JakartaCommonsHttpResponse res, BufferedWriter hfos, OutputStream byteStream) throws IOException, UnsupportedEncodingException {
|
|
assert byteStream != null;
|
|
try {
|
|
InputStream data = res.getDataAsStream();
|
|
if (data == null) return;
|
|
String charSet = httpHeader.getCharSet(res.getResponseHeader());
|
|
serverFileUtils.copyToWriters(new BufferedInputStream(data), hfos, new BufferedWriter(new OutputStreamWriter(byteStream, charSet)) , charSet);
|
|
} finally {
|
|
res.closeStream();
|
|
}
|
|
}
|
|
|
|
private static void removeHopByHopHeaders(httpHeader headers) {
|
|
/*
|
|
- Trailers
|
|
*/
|
|
|
|
headers.remove(httpHeader.CONNECTION);
|
|
headers.remove(httpHeader.KEEP_ALIVE);
|
|
headers.remove(httpHeader.UPGRADE);
|
|
headers.remove(httpHeader.TE);
|
|
headers.remove(httpHeader.PROXY_CONNECTION);
|
|
headers.remove(httpHeader.PROXY_AUTHENTICATE);
|
|
headers.remove(httpHeader.PROXY_AUTHORIZATION);
|
|
|
|
// special headers inserted by squid
|
|
headers.remove(httpHeader.X_CACHE);
|
|
headers.remove(httpHeader.X_CACHE_LOOKUP);
|
|
|
|
// remove transfer encoding header
|
|
headers.remove(httpHeader.TRANSFER_ENCODING);
|
|
|
|
//removing yacy status headers
|
|
headers.remove(httpHeader.X_YACY_KEEP_ALIVE_REQUEST_COUNT);
|
|
headers.remove(httpHeader.X_YACY_ORIGINAL_REQUEST_LINE);
|
|
}
|
|
|
|
private static void forceConnectionClose(Properties conProp) {
|
|
if (conProp != null) {
|
|
conProp.setProperty(httpHeader.CONNECTION_PROP_PERSISTENT,"close");
|
|
}
|
|
}
|
|
|
|
public static void doHead(Properties conProp, httpHeader requestHeader, OutputStream respond) {
|
|
|
|
JakartaCommonsHttpResponse res = null;
|
|
yacyURL url = null;
|
|
try {
|
|
// remembering the starting time of the request
|
|
Date requestDate = new Date(); // remember the time...
|
|
conProp.put(httpHeader.CONNECTION_PROP_REQUEST_START,new Long(requestDate.getTime()));
|
|
if (yacyTrigger) de.anomic.yacy.yacyCore.triggerOnlineAction();
|
|
switchboard.proxyLastAccess = System.currentTimeMillis();
|
|
|
|
// using an ByteCount OutputStream to count the send bytes
|
|
respond = new httpdByteCountOutputStream(respond,conProp.getProperty(httpHeader.CONNECTION_PROP_REQUESTLINE).length() + 2,"PROXY");
|
|
|
|
String host = conProp.getProperty(httpHeader.CONNECTION_PROP_HOST);
|
|
String path = conProp.getProperty(httpHeader.CONNECTION_PROP_PATH);
|
|
String args = conProp.getProperty(httpHeader.CONNECTION_PROP_ARGS);
|
|
String httpVer = conProp.getProperty(httpHeader.CONNECTION_PROP_HTTP_VER);
|
|
|
|
int port, pos;
|
|
if ((pos = host.indexOf(":")) < 0) {
|
|
port = 80;
|
|
} else {
|
|
port = Integer.parseInt(host.substring(pos + 1));
|
|
host = host.substring(0, pos);
|
|
}
|
|
|
|
try {
|
|
url = new yacyURL("http", host, port, (args == null) ? path : path + "?" + args);
|
|
} catch (MalformedURLException e) {
|
|
String errorMsg = "ERROR: internal error with url generation: host=" +
|
|
host + ", port=" + port + ", path=" + path + ", args=" + args;
|
|
serverLog.logSevere("PROXY", errorMsg);
|
|
httpd.sendRespondError(conProp,respond,4,501,null,errorMsg,e);
|
|
return;
|
|
}
|
|
|
|
// check the blacklist, inspired by [AS]: respond a 404 for all AGIS (all you get is shit) servers
|
|
String hostlow = host.toLowerCase();
|
|
|
|
// re-calc the url path
|
|
String remotePath = (args == null) ? path : (path + "?" + args);
|
|
|
|
if (plasmaSwitchboard.urlBlacklist.isListed(indexReferenceBlacklist.BLACKLIST_PROXY, hostlow, remotePath)) {
|
|
httpd.sendRespondError(conProp,respond,4,403,null,
|
|
"URL '" + hostlow + "' blocked by yacy proxy (blacklisted)",null);
|
|
theLogger.logInfo("AGIS blocking of host '" + hostlow + "'");
|
|
return;
|
|
}
|
|
|
|
// set another userAgent, if not yellow-listed
|
|
if (!(yellowList.contains(domain(hostlow)))) {
|
|
// change the User-Agent
|
|
requestHeader.put(httpHeader.USER_AGENT, generateUserAgent(requestHeader));
|
|
}
|
|
|
|
addXForwardedForHeader(conProp, requestHeader);
|
|
|
|
// resolve yacy and yacyh domains
|
|
String yAddress = (httpd.alternativeResolver == null) ? null : httpd.alternativeResolver.resolve(host);
|
|
|
|
// attach possible yacy-sublevel-domain
|
|
if ((yAddress != null) && ((pos = yAddress.indexOf("/")) >= 0)) remotePath = yAddress.substring(pos) + remotePath;
|
|
|
|
prepareRequestHeader(requestHeader, httpVer);
|
|
|
|
// setup HTTP-client
|
|
JakartaCommonsHttpClient client = new JakartaCommonsHttpClient(timeout, requestHeader, null);
|
|
client.setFollowRedirects(false);
|
|
|
|
// generate request-url
|
|
final String connectHost = hostPart(host, port, yAddress);
|
|
final String getUrl = "http://"+ connectHost + remotePath;
|
|
client.setProxy(getProxyConfig(connectHost));
|
|
|
|
// send request
|
|
try {
|
|
res = client.HEAD(getUrl);
|
|
|
|
// determine if it's an internal error of the httpc
|
|
final httpHeader responseHeader = res.getResponseHeader();
|
|
if (responseHeader.size() == 0) {
|
|
throw new Exception(res.getStatusLine());
|
|
}
|
|
|
|
prepareResponseHeader(responseHeader, res.getHttpVer());
|
|
|
|
// sending the server respond back to the client
|
|
httpd.sendRespondHeader(conProp,respond,httpVer,res.getStatusCode(),res.getStatusLine().substring(4),responseHeader);
|
|
respond.flush();
|
|
} finally {
|
|
if(res != null) {
|
|
// ... close connection
|
|
res.closeStream();
|
|
}
|
|
}
|
|
} catch (Exception e) {
|
|
handleProxyException(e,conProp,respond,url);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param host
|
|
* @param port
|
|
* @param yAddress
|
|
* @return
|
|
*/
|
|
private static String hostPart(String host, int port, String yAddress) {
|
|
final String connectHost = (yAddress == null) ? host +":"+ port : yAddress;
|
|
return connectHost;
|
|
}
|
|
|
|
public static void doPost(Properties conProp, httpHeader requestHeader, OutputStream respond, InputStream body) throws IOException {
|
|
assert conProp != null : "precondition violated: conProp != null";
|
|
assert requestHeader != null : "precondition violated: requestHeader != null";
|
|
assert body != null : "precondition violated: body != null";
|
|
yacyURL url = null;
|
|
try {
|
|
// remembering the starting time of the request
|
|
Date requestDate = new Date(); // remember the time...
|
|
conProp.put(httpHeader.CONNECTION_PROP_REQUEST_START,new Long(requestDate.getTime()));
|
|
if (yacyTrigger) de.anomic.yacy.yacyCore.triggerOnlineAction();
|
|
switchboard.proxyLastAccess = System.currentTimeMillis();
|
|
|
|
// using an ByteCount OutputStream to count the send bytes
|
|
respond = new httpdByteCountOutputStream(respond,conProp.getProperty(httpHeader.CONNECTION_PROP_REQUESTLINE).length() + 2,"PROXY");
|
|
|
|
String host = conProp.getProperty(httpHeader.CONNECTION_PROP_HOST);
|
|
String path = conProp.getProperty(httpHeader.CONNECTION_PROP_PATH);
|
|
String args = conProp.getProperty(httpHeader.CONNECTION_PROP_ARGS); // may be null if no args were given
|
|
String httpVer = conProp.getProperty(httpHeader.CONNECTION_PROP_HTTP_VER);
|
|
|
|
int port, pos;
|
|
if ((pos = host.indexOf(":")) < 0) {
|
|
port = 80;
|
|
} else {
|
|
port = Integer.parseInt(host.substring(pos + 1));
|
|
host = host.substring(0, pos);
|
|
}
|
|
|
|
try {
|
|
url = new yacyURL("http", host, port, (args == null) ? path : path + "?" + args);
|
|
} catch (MalformedURLException e) {
|
|
String errorMsg = "ERROR: internal error with url generation: host=" +
|
|
host + ", port=" + port + ", path=" + path + ", args=" + args;
|
|
serverLog.logSevere("PROXY", errorMsg);
|
|
httpd.sendRespondError(conProp,respond,4,501,null,errorMsg,e);
|
|
return;
|
|
}
|
|
|
|
// set another userAgent, if not yellowlisted
|
|
if (!(yellowList.contains(domain(host).toLowerCase()))) {
|
|
// change the User-Agent
|
|
requestHeader.put(httpHeader.USER_AGENT, generateUserAgent(requestHeader));
|
|
}
|
|
|
|
addXForwardedForHeader(conProp, requestHeader);
|
|
|
|
// resolve yacy and yacyh domains
|
|
String yAddress = (httpd.alternativeResolver == null) ? null : httpd.alternativeResolver.resolve(host);
|
|
|
|
// re-calc the url path
|
|
String remotePath = (args == null) ? path : (path + "?" + args);
|
|
|
|
// attach possible yacy-sublevel-domain
|
|
if ((yAddress != null) && ((pos = yAddress.indexOf("/")) >= 0)) remotePath = yAddress.substring(pos) + remotePath;
|
|
|
|
prepareRequestHeader(requestHeader, httpVer);
|
|
|
|
// setup HTTP-client
|
|
JakartaCommonsHttpClient client = new JakartaCommonsHttpClient(timeout, requestHeader, null);
|
|
client.setFollowRedirects(false);
|
|
|
|
final String connectHost = hostPart(host, port, yAddress);
|
|
client.setProxy(getProxyConfig(connectHost));
|
|
final String getUrl = "http://"+ connectHost + remotePath;
|
|
|
|
// check input
|
|
if(body == null) {
|
|
theLogger.logSevere("no body to POST!");
|
|
}
|
|
// from old httpc:
|
|
// "if there is a body to the call, we would have a CONTENT-LENGTH tag in the requestHeader"
|
|
// it seems that it is a HTTP/1.1 connection which stays open (the inputStream) and endlessly waits for
|
|
// input so we have to end it to do the request
|
|
final long requestLength = requestHeader.contentLength();
|
|
if(requestLength > -1) {
|
|
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
|
|
serverFileUtils.copy(body, buffer, requestLength);
|
|
body = new ByteArrayInputStream(buffer.toByteArray());
|
|
}
|
|
JakartaCommonsHttpResponse res = null;
|
|
try {
|
|
// sending the request
|
|
res = client.POST(getUrl, body);
|
|
|
|
final httpHeader responseHeader = res.getResponseHeader();
|
|
// determine if it's an internal error of the httpc
|
|
if (responseHeader.size() == 0) {
|
|
throw new Exception(res.getStatusLine());
|
|
}
|
|
|
|
final httpChunkedOutputStream chunked = setTransferEncoding(conProp, responseHeader, res.getStatusCode(), respond);
|
|
|
|
prepareResponseHeader(responseHeader, res.getHttpVer());
|
|
|
|
// sending the respond header back to the client
|
|
if (chunked != null) {
|
|
responseHeader.put(httpHeader.TRANSFER_ENCODING, "chunked");
|
|
}
|
|
|
|
// sending response headers
|
|
httpd.sendRespondHeader(conProp,
|
|
respond,
|
|
httpVer,
|
|
res.getStatusCode(),
|
|
res.getStatusLine().substring(4), // status text
|
|
responseHeader);
|
|
|
|
// respondHeader(respond, res.status, res.responseHeader);
|
|
// Saver.writeContent(res, (chunked != null) ? new BufferedOutputStream(chunked) : new BufferedOutputStream(respond));
|
|
/*
|
|
// *** (Uebernommen aus Saver-Klasse: warum ist dies hier die einzige Methode, die einen OutputStream statt einen Writer benutzt?)
|
|
try {
|
|
serverFileUtils.copyToStream(new BufferedInputStream(res.getDataAsStream()), (chunked != null) ? new BufferedOutputStream(chunked) : new BufferedOutputStream(respond));
|
|
} finally {
|
|
res.closeStream();
|
|
}
|
|
if (chunked != null) chunked.finish();
|
|
*/
|
|
writeContent(res, new BufferedWriter(new OutputStreamWriter((chunked != null) ? chunked : respond)));
|
|
|
|
respond.flush();
|
|
} finally {
|
|
// if opened ...
|
|
if(res != null) {
|
|
// ... close connection
|
|
res.closeStream();
|
|
}
|
|
}
|
|
} catch (Exception e) {
|
|
handleProxyException(e,conProp,respond,url);
|
|
} finally {
|
|
respond.flush();
|
|
if (respond instanceof httpdByteCountOutputStream) ((httpdByteCountOutputStream)respond).finish();
|
|
|
|
conProp.put(httpHeader.CONNECTION_PROP_REQUEST_END,new Long(System.currentTimeMillis()));
|
|
conProp.put(httpHeader.CONNECTION_PROP_PROXY_RESPOND_SIZE,new Long(((httpdByteCountOutputStream)respond).getCount()));
|
|
logProxyAccess(conProp);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param res
|
|
* @param responseHeader
|
|
*/
|
|
private static void prepareResponseHeader(final httpHeader responseHeader, final String httpVer) {
|
|
prepareRequestHeader(responseHeader, httpVer);
|
|
|
|
correctContentEncoding(responseHeader);
|
|
}
|
|
|
|
/**
|
|
* @param responseHeader
|
|
*/
|
|
private static void correctContentEncoding(final httpHeader responseHeader) {
|
|
// TODO gzip again? set "correct" encoding?
|
|
if(responseHeader.gzip()) {
|
|
responseHeader.remove(httpHeader.CONTENT_ENCODING);
|
|
responseHeader.remove(httpHeader.CONTENT_LENGTH); // remove gziped length
|
|
}
|
|
}
|
|
|
|
/**
|
|
* adds the client-IP of conProp to the requestHeader
|
|
*
|
|
* @param conProp
|
|
* @param requestHeader
|
|
*/
|
|
private static void addXForwardedForHeader(Properties conProp, httpHeader requestHeader) {
|
|
// setting the X-Forwarded-For Header
|
|
if (switchboard.getConfigBool("proxy.sendXForwardedForHeader", true)) {
|
|
requestHeader.put(httpHeader.X_FORWARDED_FOR, conProp.getProperty(httpHeader.CONNECTION_PROP_CLIENTIP));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* removing hop by hop headers and adding additional headers
|
|
*
|
|
* @param requestHeader
|
|
* @param httpVer
|
|
*/
|
|
private static void prepareRequestHeader(final httpHeader requestHeader, final String httpVer) {
|
|
removeHopByHopHeaders(requestHeader);
|
|
setViaHeader(requestHeader, httpVer);
|
|
}
|
|
|
|
public static void doConnect(Properties conProp, de.anomic.http.httpHeader requestHeader, InputStream clientIn, OutputStream clientOut) throws IOException {
|
|
|
|
switchboard.proxyLastAccess = System.currentTimeMillis();
|
|
|
|
String host = conProp.getProperty(httpHeader.CONNECTION_PROP_HOST);
|
|
String httpVersion = conProp.getProperty(httpHeader.CONNECTION_PROP_HTTP_VER);
|
|
String path = conProp.getProperty(httpHeader.CONNECTION_PROP_PATH);
|
|
final String args = conProp.getProperty(httpHeader.CONNECTION_PROP_ARGS);
|
|
if (args != null) { path = path + "?" + args; }
|
|
|
|
int port, pos;
|
|
if ((pos = host.indexOf(":")) < 0) {
|
|
port = 80;
|
|
} else {
|
|
port = Integer.parseInt(host.substring(pos + 1));
|
|
host = host.substring(0, pos);
|
|
}
|
|
|
|
// check the blacklist
|
|
// blacklist idea inspired by [AS]:
|
|
// respond a 404 for all AGIS ("all you get is shit") servers
|
|
final String hostlow = host.toLowerCase();
|
|
if (plasmaSwitchboard.urlBlacklist.isListed(indexReferenceBlacklist.BLACKLIST_PROXY, hostlow, path)) {
|
|
httpd.sendRespondError(conProp,clientOut,4,403,null,
|
|
"URL '" + hostlow + "' blocked by yacy proxy (blacklisted)",null);
|
|
theLogger.logInfo("AGIS blocking of host '" + hostlow + "'");
|
|
forceConnectionClose(conProp);
|
|
return;
|
|
}
|
|
|
|
// possibly branch into PROXY-PROXY connection
|
|
final httpRemoteProxyConfig proxyConfig = getRemoteProxyConfig();
|
|
if (
|
|
(proxyConfig != null) &&
|
|
(proxyConfig.useProxy()) &&
|
|
(proxyConfig.useProxy4SSL())
|
|
) {
|
|
JakartaCommonsHttpClient remoteProxy = new JakartaCommonsHttpClient(timeout, requestHeader, proxyConfig);
|
|
remoteProxy.setFollowRedirects(false); // should not be needed, but safe is safe
|
|
|
|
JakartaCommonsHttpResponse response = null;
|
|
try {
|
|
response = remoteProxy.CONNECT(host, port);
|
|
// outputs a logline to the serverlog with the current status
|
|
serverLog.logInfo("HttpdProxyHandler", "RESPONSE: status=" + response.getStatusLine() + ", header=" + response.getResponseHeader().toString());
|
|
// (response.getStatusLine().charAt(0) == '2') || (response.getStatusLine().charAt(0) == '3')
|
|
final boolean success = response.getStatusCode() >= 200 && response.getStatusCode() <= 399;
|
|
if (success) {
|
|
// replace connection details
|
|
host = proxyConfig.getProxyHost();
|
|
port = proxyConfig.getProxyPort();
|
|
// go on (see below)
|
|
} else {
|
|
// pass error response back to client
|
|
httpd.sendRespondHeader(conProp,clientOut,httpVersion,response.getStatusCode(),response.getStatusLine().substring(4),response.getResponseHeader());
|
|
//respondHeader(clientOut, response.status, response.responseHeader);
|
|
forceConnectionClose(conProp);
|
|
return;
|
|
}
|
|
} catch (Exception e) {
|
|
throw new IOException(e.getMessage());
|
|
} finally {
|
|
if(response != null) {
|
|
// release connection
|
|
response.closeStream();
|
|
}
|
|
}
|
|
}
|
|
|
|
// try to establish connection to remote host
|
|
Socket sslSocket = new Socket(host, port);
|
|
sslSocket.setSoTimeout(timeout); // waiting time for write
|
|
sslSocket.setSoLinger(true, timeout); // waiting time for read
|
|
InputStream promiscuousIn = sslSocket.getInputStream();
|
|
OutputStream promiscuousOut = sslSocket.getOutputStream();
|
|
|
|
// now then we can return a success message
|
|
clientOut.write((httpVersion + " 200 Connection established" + serverCore.CRLF_STRING +
|
|
"Proxy-agent: YACY" + serverCore.CRLF_STRING +
|
|
serverCore.CRLF_STRING).getBytes());
|
|
|
|
theLogger.logInfo("SSL connection to " + host + ":" + port + " established.");
|
|
|
|
// start stream passing with mediate processes
|
|
Mediate cs = new Mediate(sslSocket, clientIn, promiscuousOut);
|
|
Mediate sc = new Mediate(sslSocket, promiscuousIn, clientOut);
|
|
cs.start();
|
|
sc.start();
|
|
while ((sslSocket != null) &&
|
|
(sslSocket.isBound()) &&
|
|
(!(sslSocket.isClosed())) &&
|
|
(sslSocket.isConnected()) &&
|
|
((cs.isAlive()) || (sc.isAlive()))) {
|
|
// idle
|
|
try {Thread.sleep(1000);} catch (InterruptedException e) {} // wait a while
|
|
}
|
|
// set stop mode
|
|
cs.pleaseTerminate();
|
|
sc.pleaseTerminate();
|
|
// wake up thread
|
|
cs.interrupt();
|
|
sc.interrupt();
|
|
// ...hope they have terminated...
|
|
}
|
|
|
|
public static class Mediate extends Thread {
|
|
|
|
boolean terminate;
|
|
Socket socket;
|
|
InputStream in;
|
|
OutputStream out;
|
|
|
|
public Mediate(Socket socket, InputStream in, OutputStream out) {
|
|
this.terminate = false;
|
|
this.in = in;
|
|
this.out = out;
|
|
this.socket = socket;
|
|
}
|
|
|
|
public void run() {
|
|
byte[] buffer = new byte[512];
|
|
int len;
|
|
try {
|
|
while ((socket != null) &&
|
|
(socket.isBound()) &&
|
|
(!(socket.isClosed())) &&
|
|
(socket.isConnected()) &&
|
|
(!(terminate)) &&
|
|
(in != null) &&
|
|
(out != null) &&
|
|
((len = in.read(buffer)) >= 0)
|
|
) {
|
|
out.write(buffer, 0, len);
|
|
}
|
|
} catch (IOException e) {}
|
|
}
|
|
|
|
public void pleaseTerminate() {
|
|
terminate = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* checks if proxy-config exists for server (is allowed and not denied)
|
|
*
|
|
* @param server
|
|
* @param port not used (only to indicate that server is plain address)
|
|
* @return proxy which should be used or null if no proxy should be used
|
|
*/
|
|
public static httpRemoteProxyConfig getProxyConfig(final String server, final int port) {
|
|
return getProxyConfig(server, getRemoteProxyConfig());
|
|
}
|
|
|
|
/**
|
|
* checks if proxy-config is allowed and not denied
|
|
*
|
|
* @param server
|
|
* @param remProxyConfig
|
|
* @return proxy which should be used or null if no proxy should be used
|
|
*/
|
|
public static httpRemoteProxyConfig getProxyConfig(final String server, httpRemoteProxyConfig remProxyConfig) {
|
|
// possible remote proxy
|
|
// check no-proxy rule
|
|
if (remProxyConfig != null) {
|
|
if (remProxyConfig.useProxy()) {
|
|
if (!(remProxyConfig.remoteProxyAllowProxySet.contains(server))) {
|
|
if (remProxyConfig.remoteProxyDisallowProxySet.contains(server)) {
|
|
remProxyConfig = null;
|
|
} else {
|
|
// analyse remoteProxyNoProxy;
|
|
// set either remoteProxyAllowProxySet or remoteProxyDisallowProxySet accordingly
|
|
boolean allowed = true;
|
|
synchronized (remProxyConfig) {
|
|
for (final String pattern :remProxyConfig.getProxyNoProxyPatterns()) {
|
|
if (server.matches(pattern)) {
|
|
// disallow proxy for this server
|
|
allowed = false;
|
|
remProxyConfig.remoteProxyDisallowProxySet.add(server);
|
|
remProxyConfig = null;
|
|
break;
|
|
}
|
|
}
|
|
if (allowed) {
|
|
// no pattern matches: allow server
|
|
remProxyConfig.remoteProxyAllowProxySet.add(server);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// not enabled
|
|
remProxyConfig = null;
|
|
}
|
|
}
|
|
|
|
return remProxyConfig;
|
|
}
|
|
|
|
/**
|
|
* gets proxy config for full adress (without protocol (ie. "http://"))
|
|
* @param address full address with host and optionally port or path <host>:<port>/<path>
|
|
* @return null if no proxy should be used
|
|
*/
|
|
public static httpRemoteProxyConfig getProxyConfig(String address) {
|
|
// host goes to port
|
|
int p = address.indexOf(":");
|
|
if (p < 0) {
|
|
// no port, so host goes to path
|
|
p = address.indexOf("/");
|
|
}
|
|
// host should have minimum 1 character ;)
|
|
if(p > 0) {
|
|
String server = address.substring(0, p);
|
|
return getProxyConfig(server, 0);
|
|
} else {
|
|
// check if full address is in allow/deny-list
|
|
return getProxyConfig(address, 0);
|
|
}
|
|
}
|
|
|
|
private static void handleProxyException(Exception e, Properties conProp, OutputStream respond, yacyURL url) {
|
|
// this may happen if
|
|
// - the targeted host does not exist
|
|
// - anything with the remote server was wrong.
|
|
// - the client unexpectedly closed the connection ...
|
|
try {
|
|
|
|
|
|
// doing some errorhandling ...
|
|
int httpStatusCode = 404;
|
|
String httpStatusText = null;
|
|
String errorMessage = null;
|
|
Exception errorExc = null;
|
|
boolean unknownError = false;
|
|
|
|
// for customized error messages
|
|
boolean detailedErrorMsg = false;
|
|
String detailedErrorMsgFile = null;
|
|
serverObjects detailedErrorMsgMap = null;
|
|
|
|
if (e instanceof ConnectException) {
|
|
httpStatusCode = 403; httpStatusText = "Connection refused";
|
|
errorMessage = "Connection refused by destination host";
|
|
} else if (e instanceof BindException) {
|
|
errorMessage = "Unable to establish a connection to the destination host";
|
|
} else if (e instanceof NoRouteToHostException) {
|
|
errorMessage = "No route to destination host";
|
|
} else if (e instanceof UnknownHostException) {
|
|
//errorMessage = "IP address of the destination host could not be determined";
|
|
try {
|
|
detailedErrorMsgMap = unknownHostHandling(conProp);
|
|
httpStatusText = "Unknown Host";
|
|
detailedErrorMsg = true;
|
|
detailedErrorMsgFile = "proxymsg/unknownHost.inc";
|
|
} catch (Exception e1) {
|
|
errorMessage = "IP address of the destination host could not be determined";
|
|
}
|
|
} else if (e instanceof SocketTimeoutException) {
|
|
errorMessage = "Unable to establish a connection to the destination host. Connect timed out.";
|
|
} else {
|
|
String exceptionMsg = e.getMessage();
|
|
if ((exceptionMsg != null) && (exceptionMsg.indexOf("Corrupt GZIP trailer") >= 0)) {
|
|
// just do nothing, we leave it this way
|
|
theLogger.logFine("ignoring bad gzip trail for URL " + url + " (" + e.getMessage() + ")");
|
|
forceConnectionClose(conProp);
|
|
} else if ((exceptionMsg != null) && (exceptionMsg.indexOf("Connection reset")>= 0)) {
|
|
errorMessage = "Connection reset";
|
|
} else if ((exceptionMsg != null) && (exceptionMsg.indexOf("unknown host")>=0)) {
|
|
try {
|
|
detailedErrorMsgMap = unknownHostHandling(conProp);
|
|
httpStatusText = "Unknown Host";
|
|
detailedErrorMsg = true;
|
|
detailedErrorMsgFile = "proxymsg/unknownHost.inc";
|
|
} catch (Exception e1) {
|
|
errorMessage = "IP address of the destination host could not be determined";
|
|
}
|
|
} else if ((exceptionMsg != null) &&
|
|
(
|
|
(exceptionMsg.indexOf("socket write error")>=0) ||
|
|
(exceptionMsg.indexOf("Read timed out") >= 0) ||
|
|
(exceptionMsg.indexOf("Broken pipe") >= 0) ||
|
|
(exceptionMsg.indexOf("server has closed connection") >= 0)
|
|
)) {
|
|
errorMessage = exceptionMsg;
|
|
e.printStackTrace();
|
|
} else {
|
|
errorMessage = "Unexpected Error. " + e.getClass().getName() + ": " + e.getMessage();
|
|
unknownError = true;
|
|
errorExc = e;
|
|
}
|
|
}
|
|
|
|
// sending back an error message to the client
|
|
if (!conProp.containsKey(httpHeader.CONNECTION_PROP_PROXY_RESPOND_HEADER)) {
|
|
if (detailedErrorMsg) {
|
|
httpd.sendRespondError(conProp,respond, httpStatusCode, httpStatusText, new File(detailedErrorMsgFile), detailedErrorMsgMap, errorExc);
|
|
} else {
|
|
httpd.sendRespondError(conProp,respond,4,httpStatusCode,httpStatusText,errorMessage,errorExc);
|
|
}
|
|
} else {
|
|
if (unknownError) {
|
|
theLogger.logSevere("Unknown Error while processing request '" +
|
|
conProp.getProperty(httpHeader.CONNECTION_PROP_REQUESTLINE,"unknown") + "':" +
|
|
"\n" + Thread.currentThread().getName() +
|
|
"\n" + errorMessage,e);
|
|
} else {
|
|
theLogger.logWarning("Error while processing request '" +
|
|
conProp.getProperty(httpHeader.CONNECTION_PROP_REQUESTLINE,"unknown") + "':" +
|
|
"\n" + Thread.currentThread().getName() +
|
|
"\n" + errorMessage);
|
|
}
|
|
forceConnectionClose(conProp);
|
|
}
|
|
} catch (Exception ee) {
|
|
forceConnectionClose(conProp);
|
|
}
|
|
|
|
}
|
|
|
|
private static serverObjects unknownHostHandling(Properties conProp) throws Exception {
|
|
serverObjects detailedErrorMsgMap = new serverObjects();
|
|
|
|
// generic toplevel domains
|
|
HashSet<String> topLevelDomains = new HashSet<String>(Arrays.asList(new String[]{
|
|
"aero", // Fluggesellschaften/Luftfahrt
|
|
"arpa", // Einrichtung des ARPANet
|
|
"biz", // Business
|
|
"com", // Commercial
|
|
"coop", // genossenschaftliche Unternehmen
|
|
"edu", // Education
|
|
"gov", // Government
|
|
"info", // Informationsangebote
|
|
"int", // International
|
|
"jobs", // Jobangebote von Unternemen
|
|
"mil", // Military (US-Militaer)
|
|
// "museum", // Museen
|
|
"name", // Privatpersonen
|
|
"nato", // NATO (veraltet)
|
|
"net", // Net (Netzwerkbetreiber)
|
|
"org", // Organization (Nichtkommerzielle Organisation)
|
|
"pro", // Professionals
|
|
"travel", // Touristikindustrie
|
|
|
|
// some country tlds
|
|
"de",
|
|
"at",
|
|
"ch",
|
|
"it",
|
|
"uk"
|
|
}));
|
|
|
|
// getting some connection properties
|
|
String orgHostPort = "80";
|
|
String orgHostName = conProp.getProperty(httpHeader.CONNECTION_PROP_HOST,"unknown").toLowerCase();
|
|
int pos = orgHostName.indexOf(":");
|
|
if (pos != -1) {
|
|
orgHostPort = orgHostName.substring(pos+1);
|
|
orgHostName = orgHostName.substring(0,pos);
|
|
}
|
|
String orgHostPath = conProp.getProperty(httpHeader.CONNECTION_PROP_PATH,"");
|
|
String orgHostArgs = conProp.getProperty(httpHeader.CONNECTION_PROP_ARGS,"");
|
|
if (orgHostArgs.length() > 0) orgHostArgs = "?" + orgHostArgs;
|
|
detailedErrorMsgMap.put("hostName", orgHostName);
|
|
|
|
// guessing hostnames
|
|
HashSet<String> testHostNames = new HashSet<String>();
|
|
String testHostName = null;
|
|
if (!orgHostName.startsWith("www.")) {
|
|
testHostName = "www." + orgHostName;
|
|
InetAddress addr = serverDomains.dnsResolve(testHostName);
|
|
if (addr != null) testHostNames.add(testHostName);
|
|
} else if (orgHostName.startsWith("www.")) {
|
|
testHostName = orgHostName.substring(4);
|
|
InetAddress addr = serverDomains.dnsResolve(testHostName);
|
|
if (addr != null) if (addr != null) testHostNames.add(testHostName);
|
|
}
|
|
if (orgHostName.length()>4 && orgHostName.startsWith("www") && (orgHostName.charAt(3) != '.')) {
|
|
testHostName = orgHostName.substring(0,3) + "." + orgHostName.substring(3);
|
|
InetAddress addr = serverDomains.dnsResolve(testHostName);
|
|
if (addr != null) if (addr != null) testHostNames.add(testHostName);
|
|
}
|
|
|
|
pos = orgHostName.lastIndexOf(".");
|
|
if (pos != -1) {
|
|
Iterator<String> iter = topLevelDomains.iterator();
|
|
while (iter.hasNext()) {
|
|
String topLevelDomain = iter.next();
|
|
testHostName = orgHostName.substring(0,pos) + "." + topLevelDomain;
|
|
InetAddress addr = serverDomains.dnsResolve(testHostName);
|
|
if (addr != null) if (addr != null) testHostNames.add(testHostName);
|
|
}
|
|
}
|
|
|
|
int hostNameCount = 0;
|
|
Iterator<String> iter = testHostNames.iterator();
|
|
while (iter.hasNext()) {
|
|
testHostName = iter.next();
|
|
detailedErrorMsgMap.put("list_" + hostNameCount + "_hostName",testHostName);
|
|
detailedErrorMsgMap.put("list_" + hostNameCount + "_hostPort",orgHostPort);
|
|
detailedErrorMsgMap.put("list_" + hostNameCount + "_hostPath",orgHostPath);
|
|
detailedErrorMsgMap.put("list_" + hostNameCount + "_hostArgs",orgHostArgs);
|
|
hostNameCount++;
|
|
}
|
|
|
|
detailedErrorMsgMap.put("list", hostNameCount);
|
|
|
|
if (hostNameCount != 0) {
|
|
detailedErrorMsgMap.put("showList", 1);
|
|
} else {
|
|
detailedErrorMsgMap.put("showList", 0);
|
|
}
|
|
|
|
return detailedErrorMsgMap;
|
|
}
|
|
|
|
private static synchronized String generateUserAgent(httpHeader requestHeaders) {
|
|
userAgentStr.setLength(0);
|
|
|
|
String browserUserAgent = (String) requestHeaders.get(httpHeader.USER_AGENT, proxyUserAgent);
|
|
int pos = browserUserAgent.lastIndexOf(')');
|
|
if (pos >= 0) {
|
|
userAgentStr
|
|
.append(browserUserAgent.substring(0,pos))
|
|
.append("; YaCy ")
|
|
.append(switchboard.getConfig("vString","0.1"))
|
|
.append("; yacy.net")
|
|
.append(browserUserAgent.substring(pos));
|
|
} else {
|
|
userAgentStr.append(browserUserAgent);
|
|
}
|
|
|
|
return new String(userAgentStr);
|
|
}
|
|
|
|
private static void setViaHeader(httpHeader header, String httpVer) {
|
|
if (!switchboard.getConfigBool("proxy.sendViaHeader", true)) return;
|
|
String myAddress = (httpd.alternativeResolver == null) ? null : httpd.alternativeResolver.myAlternativeAddress();
|
|
if (myAddress != null) {
|
|
|
|
// getting header set by other proxies in the chain
|
|
StringBuffer viaValue = new StringBuffer();
|
|
if (header.containsKey(httpHeader.VIA)) viaValue.append((String)header.get(httpHeader.VIA));
|
|
if (viaValue.length() > 0) viaValue.append(", ");
|
|
|
|
// appending info about this peer
|
|
viaValue
|
|
.append(httpVer).append(" ")
|
|
.append(myAddress).append(" ")
|
|
.append("(YaCy ").append(switchboard.getConfig("vString", "0.0")).append(")");
|
|
|
|
// storing header back
|
|
header.put(httpHeader.VIA, new String(viaValue));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This function is used to generate a logging message according to the
|
|
* <a href="http://www.squid-cache.org/Doc/FAQ/FAQ-6.html">squid logging format</a>.<p>
|
|
* e.g.<br>
|
|
* <code>1117528623.857 178 192.168.1.201 TCP_MISS/200 1069 GET http://www.yacy.de/ - DIRECT/81.169.145.74 text/html</code>
|
|
*/
|
|
private final static synchronized void logProxyAccess(Properties conProp) {
|
|
|
|
if (!doAccessLogging) return;
|
|
|
|
logMessage.setLength(0);
|
|
|
|
// Timestamp
|
|
String currentTimestamp = Long.toString(System.currentTimeMillis());
|
|
int offset = currentTimestamp.length()-3;
|
|
|
|
logMessage.append(currentTimestamp.substring(0,offset));
|
|
logMessage.append('.');
|
|
logMessage.append(currentTimestamp.substring(offset));
|
|
logMessage.append(' ');
|
|
|
|
// Elapsed time
|
|
Long requestStart = (Long) conProp.get(httpHeader.CONNECTION_PROP_REQUEST_START);
|
|
Long requestEnd = (Long) conProp.get(httpHeader.CONNECTION_PROP_REQUEST_END);
|
|
String elapsed = Long.toString(requestEnd.longValue()-requestStart.longValue());
|
|
|
|
for (int i=0; i<6-elapsed.length(); i++) logMessage.append(' ');
|
|
logMessage.append(elapsed);
|
|
logMessage.append(' ');
|
|
|
|
// Remote Host
|
|
String clientIP = conProp.getProperty(httpHeader.CONNECTION_PROP_CLIENTIP);
|
|
logMessage.append(clientIP);
|
|
logMessage.append(' ');
|
|
|
|
// Code/Status
|
|
String respondStatus = conProp.getProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_STATUS);
|
|
String respondCode = conProp.getProperty(httpHeader.CONNECTION_PROP_PROXY_RESPOND_CODE,"UNKNOWN");
|
|
logMessage.append(respondCode);
|
|
logMessage.append("/");
|
|
logMessage.append(respondStatus);
|
|
logMessage.append(' ');
|
|
|
|
// Bytes
|
|
Long bytes = (Long) conProp.get(httpHeader.CONNECTION_PROP_PROXY_RESPOND_SIZE);
|
|
logMessage.append(bytes.toString());
|
|
logMessage.append(' ');
|
|
|
|
// Method
|
|
String requestMethod = conProp.getProperty(httpHeader.CONNECTION_PROP_METHOD);
|
|
logMessage.append(requestMethod);
|
|
logMessage.append(' ');
|
|
|
|
// URL
|
|
String requestURL = conProp.getProperty(httpHeader.CONNECTION_PROP_URL);
|
|
String requestArgs = conProp.getProperty(httpHeader.CONNECTION_PROP_ARGS);
|
|
logMessage.append(requestURL);
|
|
if (requestArgs != null) {
|
|
logMessage.append("?")
|
|
.append(requestArgs);
|
|
}
|
|
logMessage.append(' ');
|
|
|
|
// Rfc931
|
|
logMessage.append("-");
|
|
logMessage.append(' ');
|
|
|
|
// Peerstatus/Peerhost
|
|
String host = conProp.getProperty(httpHeader.CONNECTION_PROP_HOST);
|
|
logMessage.append("DIRECT/");
|
|
logMessage.append(host);
|
|
logMessage.append(' ');
|
|
|
|
// Type
|
|
String mime = "-";
|
|
if (conProp.containsKey(httpHeader.CONNECTION_PROP_PROXY_RESPOND_HEADER)) {
|
|
httpHeader proxyRespondHeader = (httpHeader) conProp.get(httpHeader.CONNECTION_PROP_PROXY_RESPOND_HEADER);
|
|
mime = proxyRespondHeader.mime();
|
|
if (mime.indexOf(";") != -1) {
|
|
mime = mime.substring(0,mime.indexOf(";"));
|
|
}
|
|
}
|
|
logMessage.append(mime);
|
|
|
|
// sending the logging message to the logger
|
|
proxyLog.logFine(logMessage.toString());
|
|
}
|
|
|
|
/**
|
|
* @param remoteProxyConfig the remoteProxyConfig to set
|
|
*/
|
|
public static synchronized void setRemoteProxyConfig(httpRemoteProxyConfig remoteProxyConfig) {
|
|
httpdProxyHandler.remoteProxyConfig = remoteProxyConfig;
|
|
}
|
|
|
|
/**
|
|
* @return the remoteProxyConfig
|
|
*/
|
|
public static httpRemoteProxyConfig getRemoteProxyConfig() {
|
|
return remoteProxyConfig;
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
proxy test:
|
|
|
|
http://www.chipchapin.com/WebTools/cookietest.php?
|
|
http://xlists.aza.org/moderator/cookietest/cookietest1.php
|
|
http://vancouver-webpages.com/proxy/cache-test.html
|
|
|
|
*/
|