1eb3ae5e1b
* Added some I2PSnark sanity checks, an OOMListener when running
standalone, and a guard against keeping memory tied up indefinitely.
* Sanity check on the watchdog (thanks zzz!)
* Handle invalid HTTP requests in I2PTunnel a little better
664 lines
32 KiB
Java
664 lines
32 KiB
Java
/* I2PTunnel is GPL'ed (with the exception mentioned in I2PTunnel.java)
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* (c) 2003 - 2004 mihi
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*/
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package net.i2p.i2ptunnel;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.net.Socket;
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import java.net.SocketException;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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import java.util.StringTokenizer;
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import java.util.HashMap;
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import java.util.Properties;
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import net.i2p.I2PAppContext;
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import net.i2p.I2PException;
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import net.i2p.client.streaming.I2PSocket;
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import net.i2p.client.streaming.I2PSocketOptions;
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import net.i2p.data.DataFormatException;
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import net.i2p.data.Destination;
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import net.i2p.util.EventDispatcher;
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import net.i2p.util.FileUtil;
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import net.i2p.util.Log;
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/**
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* Act as a mini HTTP proxy, handling various different types of requests,
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* forwarding them through I2P appropriately, and displaying the reply. Supported
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* request formats are: <pre>
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* $method http://$site[$port]/$path $protocolVersion
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* or
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* $method $path $protocolVersion\nHost: $site
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* or
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* $method http://i2p/$site/$path $protocolVersion
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* or
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* $method /$site/$path $protocolVersion
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* </pre>
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*
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* If the $site resolves with the I2P naming service, then it is directed towards
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* that eepsite, otherwise it is directed towards this client's outproxy (typically
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* "squid.i2p"). Only HTTP is supported (no HTTPS, ftp, mailto, etc). Both GET
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* and POST have been tested, though other $methods should work.
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*
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*/
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public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable {
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private static final Log _log = new Log(I2PTunnelHTTPClient.class);
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private List proxyList;
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private HashMap addressHelpers = new HashMap();
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private final static byte[] ERR_REQUEST_DENIED =
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("HTTP/1.1 403 Access Denied\r\n"+
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"Content-Type: text/html; charset=iso-8859-1\r\n"+
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"Cache-control: no-cache\r\n"+
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"\r\n"+
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"<html><body><H1>I2P ERROR: REQUEST DENIED</H1>"+
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"You attempted to connect to a non-I2P website or location.<BR>")
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.getBytes();
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private final static byte[] ERR_DESTINATION_UNKNOWN =
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("HTTP/1.1 503 Service Unavailable\r\n"+
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"Content-Type: text/html; charset=iso-8859-1\r\n"+
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"Cache-control: no-cache\r\n"+
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"\r\n"+
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"<html><body><H1>I2P ERROR: DESTINATION NOT FOUND</H1>"+
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"That I2P Destination was not found. Perhaps you pasted in the "+
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"wrong BASE64 I2P Destination or the link you are following is "+
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"bad. The host (or the WWW proxy, if you're using one) could also "+
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"be temporarily offline. You may want to <b>retry</b>. "+
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"Could not find the following Destination:<BR><BR><div>")
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.getBytes();
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private final static byte[] ERR_TIMEOUT =
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("HTTP/1.1 504 Gateway Timeout\r\n"+
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"Content-Type: text/html; charset=iso-8859-1\r\n"+
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"Cache-control: no-cache\r\n\r\n"+
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"<html><body><H1>I2P ERROR: TIMEOUT</H1>"+
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"That Destination was reachable, but timed out getting a "+
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"response. This is likely a temporary error, so you should simply "+
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"try to refresh, though if the problem persists, the remote "+
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"destination may have issues. Could not get a response from "+
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"the following Destination:<BR><BR>")
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.getBytes();
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private final static byte[] ERR_NO_OUTPROXY =
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("HTTP/1.1 503 Service Unavailable\r\n"+
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"Content-Type: text/html; charset=iso-8859-1\r\n"+
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"Cache-control: no-cache\r\n"+
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"\r\n"+
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"<html><body><H1>I2P ERROR: No outproxy found</H1>"+
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"Your request was for a site outside of I2P, but you have no "+
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"HTTP outproxy configured. Please configure an outproxy in I2PTunnel")
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.getBytes();
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private final static byte[] ERR_AHELPER_CONFLICT =
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("HTTP/1.1 409 Conflict\r\n"+
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"Content-Type: text/html; charset=iso-8859-1\r\n"+
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"Cache-control: no-cache\r\n"+
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"\r\n"+
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"<html><body><H1>I2P ERROR: Destination key conflict</H1>"+
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"The addresshelper link you followed specifies a different destination key "+
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"than a host entry in your host database. "+
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"Someone could be trying to impersonate another eepsite, "+
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"or people have given two eepsites identical names.<P/>"+
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"You can resolve the conflict by considering which key you trust, "+
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"and either discarding the addresshelper link, "+
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"discarding the host entry from your host database, "+
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"or naming one of them differently.<P/>")
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.getBytes();
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/** used to assign unique IDs to the threads / clients. no logic or functionality */
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private static volatile long __clientId = 0;
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/**
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* @throws IllegalArgumentException if the I2PTunnel does not contain
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* valid config to contact the router
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*/
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public I2PTunnelHTTPClient(int localPort, Logging l, boolean ownDest,
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String wwwProxy, EventDispatcher notifyThis,
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I2PTunnel tunnel) throws IllegalArgumentException {
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super(localPort, ownDest, l, notifyThis, "HTTPHandler " + (++__clientId), tunnel);
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if (waitEventValue("openBaseClientResult").equals("error")) {
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notifyEvent("openHTTPClientResult", "error");
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return;
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}
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proxyList = new ArrayList();
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if (wwwProxy != null) {
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StringTokenizer tok = new StringTokenizer(wwwProxy, ",");
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while (tok.hasMoreTokens())
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proxyList.add(tok.nextToken().trim());
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}
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setName(getLocalPort() + " -> HTTPClient [WWW outproxy list: " + wwwProxy + "]");
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startRunning();
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notifyEvent("openHTTPClientResult", "ok");
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}
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private String getPrefix(long requestId) { return "Client[" + _clientId + "/" + requestId + "]: "; }
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private String selectProxy() {
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synchronized (proxyList) {
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int size = proxyList.size();
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if (size <= 0) {
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if (_log.shouldLog(Log.INFO))
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_log.info("Proxy list is empty - no outproxy available");
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l.log("Proxy list is emtpy - no outproxy available");
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return null;
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}
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int index = I2PAppContext.getGlobalContext().random().nextInt(size);
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String proxy = (String)proxyList.get(index);
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return proxy;
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}
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}
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private static final int DEFAULT_READ_TIMEOUT = 60*1000;
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/**
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* create the default options (using the default timeout, etc)
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*
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*/
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protected I2PSocketOptions getDefaultOptions() {
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Properties defaultOpts = getTunnel().getClientOptions();
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if (!defaultOpts.contains(I2PSocketOptions.PROP_READ_TIMEOUT))
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defaultOpts.setProperty(I2PSocketOptions.PROP_READ_TIMEOUT, ""+DEFAULT_READ_TIMEOUT);
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//if (!defaultOpts.contains("i2p.streaming.inactivityTimeout"))
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// defaultOpts.setProperty("i2p.streaming.inactivityTimeout", ""+DEFAULT_READ_TIMEOUT);
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I2PSocketOptions opts = sockMgr.buildOptions(defaultOpts);
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if (!defaultOpts.containsKey(I2PSocketOptions.PROP_CONNECT_TIMEOUT))
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opts.setConnectTimeout(DEFAULT_CONNECT_TIMEOUT);
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return opts;
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}
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/**
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* create the default options (using the default timeout, etc)
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*
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*/
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protected I2PSocketOptions getDefaultOptions(Properties overrides) {
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Properties defaultOpts = getTunnel().getClientOptions();
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defaultOpts.putAll(overrides);
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if (!defaultOpts.contains(I2PSocketOptions.PROP_READ_TIMEOUT))
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defaultOpts.setProperty(I2PSocketOptions.PROP_READ_TIMEOUT, ""+DEFAULT_READ_TIMEOUT);
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if (!defaultOpts.contains("i2p.streaming.inactivityTimeout"))
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defaultOpts.setProperty("i2p.streaming.inactivityTimeout", ""+DEFAULT_READ_TIMEOUT);
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I2PSocketOptions opts = sockMgr.buildOptions(defaultOpts);
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if (!defaultOpts.containsKey(I2PSocketOptions.PROP_CONNECT_TIMEOUT))
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opts.setConnectTimeout(DEFAULT_CONNECT_TIMEOUT);
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return opts;
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}
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private static final boolean DEFAULT_GZIP = true;
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private static long __requestId = 0;
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protected void clientConnectionRun(Socket s) {
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OutputStream out = null;
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String targetRequest = null;
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boolean usingWWWProxy = false;
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String currentProxy = null;
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long requestId = ++__requestId;
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try {
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out = s.getOutputStream();
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BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream(), "ISO-8859-1"));
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String line, method = null, protocol = null, host = null, destination = null;
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StringBuffer newRequest = new StringBuffer();
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int ahelper = 0;
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while ((line = br.readLine()) != null) {
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if (_log.shouldLog(Log.DEBUG))
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_log.debug(getPrefix(requestId) + "Line=[" + line + "]");
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String lowercaseLine = line.toLowerCase();
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if (lowercaseLine.startsWith("connection: ") ||
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lowercaseLine.startsWith("keep-alive: ") ||
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lowercaseLine.startsWith("proxy-connection: "))
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continue;
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if (method == null) { // first line (GET /base64/realaddr)
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if (_log.shouldLog(Log.DEBUG))
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_log.debug(getPrefix(requestId) + "Method is null for [" + line + "]");
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int pos = line.indexOf(" ");
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if (pos == -1) break;
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method = line.substring(0, pos);
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String request = line.substring(pos + 1);
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if (request.startsWith("/") && getTunnel().getClientOptions().getProperty("i2ptunnel.noproxy") != null) {
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request = "http://i2p" + request;
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} else if (request.startsWith("/eepproxy/")) {
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// /eepproxy/foo.i2p/bar/baz.html HTTP/1.0
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String subRequest = request.substring("/eepproxy/".length());
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int protopos = subRequest.indexOf(" ");
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String uri = subRequest.substring(0, protopos);
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if (uri.indexOf("/") == -1) {
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uri = uri + "/";
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}
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// "http://" + "foo.i2p/bar/baz.html" + " HTTP/1.0"
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request = "http://" + uri + subRequest.substring(protopos);
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}
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pos = request.indexOf("//");
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if (pos == -1) {
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method = null;
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break;
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}
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protocol = request.substring(0, pos + 2);
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request = request.substring(pos + 2);
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targetRequest = request;
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pos = request.indexOf("/");
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if (pos == -1) {
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method = null;
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break;
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}
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host = request.substring(0, pos);
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// Quick hack for foo.bar.i2p
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if (host.toLowerCase().endsWith(".i2p")) {
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// Destination gets the host name
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destination = host;
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// Host becomes the destination key
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host = getHostName(destination);
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int pos2;
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if ((pos2 = request.indexOf("?")) != -1) {
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// Try to find an address helper in the fragments
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// and split the request into it's component parts for rebuilding later
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String ahelperKey = null;
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boolean ahelperConflict = false;
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String fragments = request.substring(pos2 + 1);
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String uriPath = request.substring(0, pos2);
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pos2 = fragments.indexOf(" ");
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String protocolVersion = fragments.substring(pos2 + 1);
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String urlEncoding = "";
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fragments = fragments.substring(0, pos2);
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String initialFragments = fragments;
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fragments = fragments + "&";
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String fragment;
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while(fragments.length() > 0) {
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pos2 = fragments.indexOf("&");
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fragment = fragments.substring(0, pos2);
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fragments = fragments.substring(pos2 + 1);
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// Fragment looks like addresshelper key
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if (fragment.startsWith("i2paddresshelper=")) {
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pos2 = fragment.indexOf("=");
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ahelperKey = fragment.substring(pos2 + 1);
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// Key contains data, lets not ignore it
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if (ahelperKey != null) {
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// Host resolvable only with addresshelper
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if ( (host == null) || ("i2p".equals(host)) )
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{
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// Cannot check, use addresshelper key
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addressHelpers.put(destination,ahelperKey);
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} else {
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// Host resolvable from database, verify addresshelper key
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// Silently bypass correct keys, otherwise alert
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if (!host.equals(ahelperKey))
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{
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// Conflict: handle when URL reconstruction done
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ahelperConflict = true;
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if (_log.shouldLog(Log.WARN))
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_log.warn(getPrefix(requestId) + "Addresshelper key conflict for site [" + destination + "], trusted key [" + host + "], specified key [" + ahelperKey + "].");
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}
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}
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}
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} else {
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// Other fragments, just pass along
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// Append each fragment to urlEncoding
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if ("".equals(urlEncoding)) {
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urlEncoding = "?" + fragment;
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} else {
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urlEncoding = urlEncoding + "&" + fragment;
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}
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}
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}
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// Reconstruct the request minus the i2paddresshelper GET var
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request = uriPath + urlEncoding + " " + protocolVersion;
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// Did addresshelper key conflict?
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if (ahelperConflict)
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{
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String str;
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byte[] header;
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str = FileUtil.readTextFile("docs/ahelper-conflict-header.ht", 100, true);
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if (str != null) header = str.getBytes();
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else header = ERR_AHELPER_CONFLICT;
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if (out != null) {
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long alias = I2PAppContext.getGlobalContext().random().nextLong();
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String trustedURL = protocol + uriPath + urlEncoding;
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String conflictURL = protocol + alias + ".i2p/?" + initialFragments;
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out.write(header);
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out.write(("To visit the destination in your host database, click <a href=\"" + trustedURL + "\">here</a>. To visit the conflicting addresshelper link by temporarily giving it a random alias, click <a href=\"" + conflictURL + "\">here</a>.<P/>").getBytes());
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out.write("</div><p><i>I2P HTTP Proxy Server<br>Generated on: ".getBytes());
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out.write(new Date().toString().getBytes());
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out.write("</i></body></html>\n".getBytes());
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out.flush();
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}
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s.close();
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return;
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}
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}
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String addressHelper = (String) addressHelpers.get(destination);
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if (addressHelper != null) {
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destination = addressHelper;
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host = getHostName(destination);
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ahelper = 1;
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}
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line = method + " " + request.substring(pos);
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} else if (host.indexOf(".") != -1) {
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// The request must be forwarded to a WWW proxy
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if (_log.shouldLog(Log.DEBUG))
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_log.debug("Before selecting outproxy for " + host);
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currentProxy = selectProxy();
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if (_log.shouldLog(Log.DEBUG))
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_log.debug("After selecting outproxy for " + host + ": " + currentProxy);
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if (currentProxy == null) {
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if (_log.shouldLog(Log.WARN))
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_log.warn(getPrefix(requestId) + "Host wants to be outproxied, but we dont have any!");
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l.log("No HTTP outproxy found for the request.");
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if (out != null) {
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out.write(ERR_NO_OUTPROXY);
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out.write("<p /><i>Generated on: ".getBytes());
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out.write(new Date().toString().getBytes());
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out.write("</i></body></html>\n".getBytes());
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out.flush();
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}
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s.close();
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return;
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}
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destination = currentProxy;
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usingWWWProxy = true;
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if (_log.shouldLog(Log.DEBUG))
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_log.debug(getPrefix(requestId) + "Host doesnt end with .i2p and it contains a period [" + host + "]: wwwProxy!");
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} else {
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request = request.substring(pos + 1);
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pos = request.indexOf("/");
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if (pos < 0) {
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l.log("Invalid request url [" + request + "]");
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if (out != null) {
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out.write(ERR_REQUEST_DENIED);
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out.write("<p /><i>Generated on: ".getBytes());
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out.write(new Date().toString().getBytes());
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out.write("</i></body></html>\n".getBytes());
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out.flush();
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}
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s.close();
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return;
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}
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destination = request.substring(0, pos);
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line = method + " " + request.substring(pos);
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}
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boolean isValid = usingWWWProxy || isSupportedAddress(host, protocol);
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if (!isValid) {
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if (_log.shouldLog(Log.INFO)) _log.info(getPrefix(requestId) + "notValid(" + host + ")");
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method = null;
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destination = null;
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break;
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} else if (!usingWWWProxy) {
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if (_log.shouldLog(Log.INFO)) _log.info(getPrefix(requestId) + "host=getHostName(" + destination + ")");
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host = getHostName(destination); // hide original host
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}
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if (_log.shouldLog(Log.DEBUG)) {
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_log.debug(getPrefix(requestId) + "METHOD:" + method + ":");
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_log.debug(getPrefix(requestId) + "PROTOC:" + protocol + ":");
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_log.debug(getPrefix(requestId) + "HOST :" + host + ":");
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_log.debug(getPrefix(requestId) + "DEST :" + destination + ":");
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}
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} else {
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if (lowercaseLine.startsWith("host: ") && !usingWWWProxy) {
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line = "Host: " + host;
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if (_log.shouldLog(Log.INFO))
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_log.info(getPrefix(requestId) + "Setting host = " + host);
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} else if (lowercaseLine.startsWith("user-agent: ")) {
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// always stripped, added back at the end
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line = null;
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continue;
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} else if (lowercaseLine.startsWith("accept")) {
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// strip the accept-blah headers, as they vary dramatically from
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// browser to browser
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line = null;
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continue;
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} else if (lowercaseLine.startsWith("referer: ")) {
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// Shouldn't we be more specific, like accepting in-site referers ?
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//line = "Referer: i2p";
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line = null;
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continue; // completely strip the line
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} else if (lowercaseLine.startsWith("via: ")) {
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//line = "Via: i2p";
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line = null;
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continue; // completely strip the line
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} else if (lowercaseLine.startsWith("from: ")) {
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//line = "From: i2p";
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line = null;
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continue; // completely strip the line
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}
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}
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if (line.length() == 0) {
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String ok = getTunnel().getContext().getProperty("i2ptunnel.gzip");
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boolean gzip = DEFAULT_GZIP;
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if (ok != null)
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gzip = Boolean.valueOf(ok).booleanValue();
|
|
if (gzip) {
|
|
// according to rfc2616 s14.3, this *should* force identity, even if
|
|
// an explicit q=0 for gzip doesn't. tested against orion.i2p, and it
|
|
// seems to work.
|
|
newRequest.append("Accept-Encoding: \r\n");
|
|
newRequest.append("X-Accept-Encoding: x-i2p-gzip;q=1.0, identity;q=0.5, deflate;q=0, gzip;q=0, *;q=0\r\n");
|
|
}
|
|
newRequest.append("User-Agent: MYOB/6.66 (AN/ON)\r\n");
|
|
newRequest.append("Connection: close\r\n\r\n");
|
|
break;
|
|
} else {
|
|
newRequest.append(line).append("\r\n"); // HTTP spec
|
|
}
|
|
}
|
|
if (_log.shouldLog(Log.DEBUG))
|
|
_log.debug(getPrefix(requestId) + "NewRequest header: [" + newRequest.toString() + "]");
|
|
|
|
while (br.ready()) { // empty the buffer (POST requests)
|
|
int i = br.read();
|
|
if (i != -1) {
|
|
newRequest.append((char) i);
|
|
}
|
|
}
|
|
if (method == null || destination == null) {
|
|
l.log("No HTTP method found in the request.");
|
|
if (out != null) {
|
|
out.write(ERR_REQUEST_DENIED);
|
|
out.write("<p /><i>Generated on: ".getBytes());
|
|
out.write(new Date().toString().getBytes());
|
|
out.write("</i></body></html>\n".getBytes());
|
|
out.flush();
|
|
}
|
|
s.close();
|
|
return;
|
|
}
|
|
|
|
if (_log.shouldLog(Log.DEBUG))
|
|
_log.debug(getPrefix(requestId) + "Destination: " + destination);
|
|
|
|
Destination dest = I2PTunnel.destFromName(destination);
|
|
if (dest == null) {
|
|
l.log("Could not resolve " + destination + ".");
|
|
if (_log.shouldLog(Log.WARN))
|
|
_log.warn("Unable to resolve " + destination + " (proxy? " + usingWWWProxy + ", request: " + targetRequest);
|
|
String str;
|
|
byte[] header;
|
|
boolean showAddrHelper = false;
|
|
if (usingWWWProxy)
|
|
str = FileUtil.readTextFile("docs/dnfp-header.ht", 100, true);
|
|
else if(ahelper != 0)
|
|
str = FileUtil.readTextFile("docs/dnfb-header.ht", 100, true);
|
|
else {
|
|
str = FileUtil.readTextFile("docs/dnfh-header.ht", 100, true);
|
|
showAddrHelper = true;
|
|
}
|
|
if (str != null)
|
|
header = str.getBytes();
|
|
else
|
|
header = ERR_DESTINATION_UNKNOWN;
|
|
writeErrorMessage(header, out, targetRequest, usingWWWProxy, destination, showAddrHelper);
|
|
s.close();
|
|
return;
|
|
}
|
|
String remoteID;
|
|
|
|
Properties opts = new Properties();
|
|
//opts.setProperty("i2p.streaming.inactivityTimeout", ""+120*1000);
|
|
// 1 == disconnect. see ConnectionOptions in the new streaming lib, which i
|
|
// dont want to hard link to here
|
|
//opts.setProperty("i2p.streaming.inactivityTimeoutAction", ""+1);
|
|
I2PSocket i2ps = createI2PSocket(dest, getDefaultOptions(opts));
|
|
byte[] data = newRequest.toString().getBytes("ISO-8859-1");
|
|
Runnable onTimeout = new OnTimeout(s, s.getOutputStream(), targetRequest, usingWWWProxy, currentProxy, requestId);
|
|
I2PTunnelRunner runner = new I2PTunnelHTTPClientRunner(s, i2ps, sockLock, data, mySockets, onTimeout);
|
|
} catch (SocketException ex) {
|
|
_log.info(getPrefix(requestId) + "Error trying to connect", ex);
|
|
l.log(ex.getMessage());
|
|
handleHTTPClientException(ex, out, targetRequest, usingWWWProxy, currentProxy, requestId);
|
|
closeSocket(s);
|
|
} catch (IOException ex) {
|
|
_log.info(getPrefix(requestId) + "Error trying to connect", ex);
|
|
l.log(ex.getMessage());
|
|
handleHTTPClientException(ex, out, targetRequest, usingWWWProxy, currentProxy, requestId);
|
|
closeSocket(s);
|
|
} catch (I2PException ex) {
|
|
_log.info("getPrefix(requestId) + Error trying to connect", ex);
|
|
l.log(ex.getMessage());
|
|
handleHTTPClientException(ex, out, targetRequest, usingWWWProxy, currentProxy, requestId);
|
|
closeSocket(s);
|
|
}
|
|
}
|
|
|
|
private final static String getHostName(String host) {
|
|
if (host == null) return null;
|
|
try {
|
|
Destination dest = I2PTunnel.destFromName(host);
|
|
if (dest == null) return "i2p";
|
|
return dest.toBase64();
|
|
} catch (DataFormatException dfe) {
|
|
return "i2p";
|
|
}
|
|
}
|
|
|
|
private class OnTimeout implements Runnable {
|
|
private Socket _socket;
|
|
private OutputStream _out;
|
|
private String _target;
|
|
private boolean _usingProxy;
|
|
private String _wwwProxy;
|
|
private long _requestId;
|
|
public OnTimeout(Socket s, OutputStream out, String target, boolean usingProxy, String wwwProxy, long id) {
|
|
_socket = s;
|
|
_out = out;
|
|
_target = target;
|
|
_usingProxy = usingProxy;
|
|
_wwwProxy = wwwProxy;
|
|
_requestId = id;
|
|
}
|
|
public void run() {
|
|
if (_log.shouldLog(Log.DEBUG))
|
|
_log.debug("Timeout occured requesting " + _target);
|
|
handleHTTPClientException(new RuntimeException("Timeout"), _out,
|
|
_target, _usingProxy, _wwwProxy, _requestId);
|
|
closeSocket(_socket);
|
|
}
|
|
}
|
|
|
|
private static void writeErrorMessage(byte[] errMessage, OutputStream out, String targetRequest,
|
|
boolean usingWWWProxy, String wwwProxy, boolean showAddrHelper) throws IOException {
|
|
if (out != null) {
|
|
out.write(errMessage);
|
|
if (targetRequest != null) {
|
|
int protopos = targetRequest.indexOf(" ");
|
|
String uri = targetRequest.substring(0, protopos);
|
|
out.write("<a href=\"http://".getBytes());
|
|
out.write(uri.getBytes());
|
|
out.write("\">http://".getBytes());
|
|
out.write(uri.getBytes());
|
|
out.write("</a>".getBytes());
|
|
if (usingWWWProxy) out.write(("<br>WWW proxy: " + wwwProxy).getBytes());
|
|
if (showAddrHelper) {
|
|
out.write("<br><br>Click below to try an address helper link:<br><br><a href=\"http://orion.i2p/jump/".getBytes());
|
|
out.write(uri.getBytes());
|
|
out.write("\">http://orion.i2p/jump/".getBytes());
|
|
out.write(uri.getBytes());
|
|
out.write("</a>".getBytes());
|
|
}
|
|
}
|
|
out.write("</div><p><i>I2P HTTP Proxy Server<br>Generated on: ".getBytes());
|
|
out.write(new Date().toString().getBytes());
|
|
out.write("</i></body></html>\n".getBytes());
|
|
out.flush();
|
|
}
|
|
}
|
|
|
|
private void handleHTTPClientException(Exception ex, OutputStream out, String targetRequest,
|
|
boolean usingWWWProxy, String wwwProxy, long requestId) {
|
|
|
|
if (_log.shouldLog(Log.WARN))
|
|
_log.warn(getPrefix(requestId) + "Error sending to " + wwwProxy + " (proxy? " + usingWWWProxy + ", request: " + targetRequest, ex);
|
|
if (out != null) {
|
|
try {
|
|
String str;
|
|
byte[] header;
|
|
if (usingWWWProxy)
|
|
str = FileUtil.readTextFile("docs/dnfp-header.ht", 100, true);
|
|
else
|
|
str = FileUtil.readTextFile("docs/dnf-header.ht", 100, true);
|
|
if (str != null)
|
|
header = str.getBytes();
|
|
else
|
|
header = ERR_DESTINATION_UNKNOWN;
|
|
writeErrorMessage(header, out, targetRequest, usingWWWProxy, wwwProxy, false);
|
|
} catch (IOException ioe) {
|
|
_log.warn(getPrefix(requestId) + "Error writing out the 'destination was unknown' " + "message", ioe);
|
|
}
|
|
} else {
|
|
_log.warn(getPrefix(requestId) + "Client disconnected before we could say that destination " + "was unknown", ex);
|
|
}
|
|
}
|
|
|
|
private final static String SUPPORTED_HOSTS[] = { "i2p", "www.i2p.com", "i2p."};
|
|
|
|
private boolean isSupportedAddress(String host, String protocol) {
|
|
if ((host == null) || (protocol == null)) return false;
|
|
boolean found = false;
|
|
String lcHost = host.toLowerCase();
|
|
for (int i = 0; i < SUPPORTED_HOSTS.length; i++) {
|
|
if (SUPPORTED_HOSTS[i].equals(lcHost)) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
try {
|
|
Destination d = I2PTunnel.destFromName(host);
|
|
if (d == null) return false;
|
|
} catch (DataFormatException dfe) {
|
|
}
|
|
}
|
|
|
|
return protocol.equalsIgnoreCase("http://");
|
|
}
|
|
}
|