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* HTTP Proxy:

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- Put B32 instead of B64 in Host: header, saves 450 bytes
      - Eliminate some redundant lookups
      - Fix http://i2p/b64/ and /eepproxy/site/ requests
      - Disallow a port specified for an i2p address
      - Cleanup and comments
This commit is contained in:
zzz
2010-02-27 01:16:39 +00:00
parent b4911a2b2f
commit efdc8e5df0
3 changed files with 114 additions and 15 deletions
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103
apps/i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnelHTTPClient.java
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@ -26,6 +26,7 @@ import net.i2p.I2PException;
import net.i2p.client.streaming.I2PSocket;
import net.i2p.client.streaming.I2PSocketManager;
import net.i2p.client.streaming.I2PSocketOptions;
import net.i2p.data.Base32;
import net.i2p.data.DataFormatException;
import net.i2p.data.DataHelper;
import net.i2p.data.Destination;
@ -46,8 +47,14 @@ import net.i2p.util.Translate;
* $method http://i2p/$b64key/$path $protocolVersion
* or
* $method /$site/$path $protocolVersion
* or (deprecated)
* $method /eepproxy/$site/$path $protocolVersion
* </pre>
*
* Note that http://i2p/$b64key/... and /eepproxy/$site/... are not recommended
* in browsers or other user-visible applications, as relative links will not
* resolve correctly, cookies won't work, etc.
*
* If the $site resolves with the I2P naming service, then it is directed towards
* that eepsite, otherwise it is directed towards this client's outproxy (typically
* "squid.i2p"). Only HTTP is supported (no HTTPS, ftp, mailto, etc). Both GET
@ -303,14 +310,16 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
if (method == null) { // first line (GET /base64/realaddr)
if (_log.shouldLog(Log.DEBUG))
_log.debug(getPrefix(requestId) + "Method is null for [" + line + "]");
_log.debug(getPrefix(requestId) + "First line [" + line + "]");
int pos = line.indexOf(" ");
if (pos == -1) break;
method = line.substring(0, pos);
// TODO use Java URL class to make all this simpler and more robust
// That will also fix IPV6 [a:b:c]
String request = line.substring(pos + 1);
if (request.startsWith("/") && getTunnel().getClientOptions().getProperty("i2ptunnel.noproxy") != null) {
// what is this for ???
request = "http://i2p" + request;
} else if (request.startsWith("/eepproxy/")) {
// /eepproxy/foo.i2p/bar/baz.html HTTP/1.0
@ -322,6 +331,16 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
}
// "http://" + "foo.i2p/bar/baz.html" + " HTTP/1.0"
request = "http://" + uri + subRequest.substring(protopos);
} else if (request.toLowerCase().startsWith("http://i2p/")) {
// http://i2p/b64key/bar/baz.html HTTP/1.0
String subRequest = request.substring("http://i2p/".length());
int protopos = subRequest.indexOf(" ");
String uri = subRequest.substring(0, protopos);
if (uri.indexOf("/") == -1) {
uri = uri + "/";
}
// "http://" + "b64key/bar/baz.html" + " HTTP/1.0"
request = "http://" + uri + subRequest.substring(protopos);
}
pos = request.indexOf("//");
@ -334,6 +353,7 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
targetRequest = request;
// pos is the start of the path
pos = request.indexOf("/");
if (pos == -1) {
method = null;
@ -354,9 +374,22 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
}
}
if (host.toLowerCase().equals("proxy.i2p")) {
// Go through the various types of host names, set
// the host and destination variables accordingly,
// and transform the first line.
// For all i2p network hosts, ensure that the host is a
// Base 32 hostname so that we do not reveal our name for it
// in our addressbook (all naming is local),
// and it is removed from the request line.
if (host.length() >= 516 && host.indexOf(".") < 0) {
// http://b64key/bar/baz.html
destination = host;
host = getHostName(destination);
line = method + ' ' + request.substring(pos);
} else if (host.toLowerCase().equals("proxy.i2p")) {
// so we don't do any naming service lookups
destination = "proxy.i2p";
destination = host;
usingInternalServer = true;
} else if (host.toLowerCase().endsWith(".i2p")) {
// Destination gets the host name
@ -482,6 +515,9 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
if (_log.shouldLog(Log.DEBUG))
_log.debug(getPrefix(requestId) + "Host doesnt end with .i2p and it contains a period [" + host + "]: wwwProxy!");
} else {
// what is left for here? a hostname with no dots, and != "i2p"
// and not a destination ???
// Perhaps something in privatehosts.txt ...
request = request.substring(pos + 1);
pos = request.indexOf("/");
if (pos < 0) {
@ -494,31 +530,49 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
return;
}
destination = request.substring(0, pos);
host = getHostName(destination);
line = method + " " + request.substring(pos);
} // end host name processing
if (port != 80 && !usingWWWProxy) {
if (out != null) {
out.write(getErrorPage("denied", ERR_REQUEST_DENIED));
writeFooter(out);
}
s.close();
return;
}
boolean isValid = usingWWWProxy || usingInternalServer || isSupportedAddress(host, protocol);
if (!isValid) {
if (_log.shouldLog(Log.INFO)) _log.info(getPrefix(requestId) + "notValid(" + host + ")");
method = null;
destination = null;
break;
} else if ((!usingWWWProxy) && (!usingInternalServer)) {
if (_log.shouldLog(Log.INFO)) _log.info(getPrefix(requestId) + "host=getHostName(" + destination + ")");
host = getHostName(destination); // hide original host
}
// don't do this, it forces yet another hostname lookup,
// and in all cases host was already set above
//if ((!usingWWWProxy) && (!usingInternalServer)) {
// String oldhost = host;
// host = getHostName(destination); // hide original host
// if (_log.shouldLog(Log.INFO))
// _log.info(getPrefix(requestId) + " oldhost " + oldhost + " newhost " + host + " dest " + destination);
//}
if (_log.shouldLog(Log.DEBUG)) {
_log.debug(getPrefix(requestId) + "METHOD:" + method + ":");
_log.debug(getPrefix(requestId) + "PROTOC:" + protocol + ":");
_log.debug(getPrefix(requestId) + "HOST :" + host + ":");
_log.debug(getPrefix(requestId) + "DEST :" + destination + ":");
_log.debug(getPrefix(requestId) + "METHOD: \"" + method + "\"");
_log.debug(getPrefix(requestId) + "PROTOC: \"" + protocol + "\"");
_log.debug(getPrefix(requestId) + "HOST : \"" + host + "\"");
_log.debug(getPrefix(requestId) + "DEST : \"" + destination + "\"");
}
// end first line processing
} else {
if (lowercaseLine.startsWith("host: ") && !usingWWWProxy) {
// Note that we only pass the original Host: line through to the outproxy
// But we don't create a Host: line if it wasn't sent to us
line = "Host: " + host;
if (_log.shouldLog(Log.INFO))
_log.info(getPrefix(requestId) + "Setting host = " + host);
@ -575,7 +629,7 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
_log.debug(getPrefix(requestId) + "NewRequest header: [" + newRequest.toString() + "]");
if (method == null || destination == null) {
l.log("No HTTP method found in the request.");
//l.log("No HTTP method found in the request.");
if (out != null) {
if ("http://".equalsIgnoreCase(protocol))
out.write(getErrorPage("denied", ERR_REQUEST_DENIED));
@ -598,7 +652,16 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
return;
}
Destination clientDest = I2PTunnel.destFromName(destination);
// If the host is "i2p", the getHostName() lookup failed, don't try to
// look it up again as the naming service does not do negative caching
// so it will be slow.
Destination clientDest;
if ("i2p".equals(host))
clientDest = null;
else
clientDest = I2PTunnel.destFromName(destination);
if (clientDest == null) {
//l.log("Could not resolve " + destination + ".");
if (_log.shouldLog(Log.WARN))
@ -679,12 +742,18 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
}
}
/**
* @return b32hash.b32.i2p, or "i2p" on lookup failure.
* Prior to 0.7.12, returned b64 key
*/
private final static String getHostName(String host) {
if (host == null) return null;
if (host.length() == 60 && host.toLowerCase().endsWith(".b32.i2p"))
return host;
try {
Destination dest = I2PTunnel.destFromName(host);
if (dest == null) return "i2p";
return dest.toBase64();
return Base32.encode(dest.calculateHash().getData()) + ".b32.i2p";
} catch (DataFormatException dfe) {
return "i2p";
}
@ -858,8 +927,14 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
private final static String SUPPORTED_HOSTS[] = { "i2p", "www.i2p.com", "i2p."};
/** @param host ignored */
private static boolean isSupportedAddress(String host, String protocol) {
if ((host == null) || (protocol == null)) return false;
/****
* Let's not look up the name _again_
* and now that host is a b32, this was failing
*
boolean found = false;
String lcHost = host.toLowerCase();
for (int i = 0; i < SUPPORTED_HOSTS.length; i++) {
@ -876,7 +951,7 @@ public class I2PTunnelHTTPClient extends I2PTunnelClientBase implements Runnable
} catch (DataFormatException dfe) {
}
}
****/
return protocol.equalsIgnoreCase("http://");
}

24
history.txt
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@ -1,3 +1,27 @@
2010-02-27 zzz
* eepsite: Add some help to index.html
* HTTP Proxy:
- Put B32 instead of B64 in Host: header, saves 450 bytes
- Eliminate some redundant lookups
- Fix http://i2p/b64/ and /eepproxy/site/ requests
- Disallow a port specified for an i2p address
- Cleanup and comments
* i2psnark:
- Fix NPE after create file failure
- Sanitize more characters in file names
* netdb: Fix NPE after OOM http://trac.i2p2.i2p/ticket/38
* NTCP Transport:
- Replace lists with concurrent queues in EventPumper
and NTCPConnection to remove global locks
- Java 5 cleanup
* Plugins: Support console themes
* UDP Transport:
- Replace the unused-since-2006 TimedWeightedPriorityMessageQueue
with DummyThrottle
- Don't instantiate and start TWPMQ Cleaner and OutboundRefiller
threads, part of priority queues unused since 0.6.1.11
- Don't instantiate and start UDPFlooder, it is for testing only
2010-02-23 zzz
* Unzip: Any files in the zip with a .jar.pack or .war.pack extension
will be transparently unpacked with unpack200. Savings is about 60%.

2
router/java/src/net/i2p/router/RouterVersion.java
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@ -18,7 +18,7 @@ public class RouterVersion {
/** deprecated */
public final static String ID = "Monotone";
public final static String VERSION = CoreVersion.VERSION;
public final static long BUILD = 5;
public final static long BUILD = 6;
/** for example "-test" */
public final static String EXTRA = "";