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SOCKS: Fix NPE on lookup failure in SOCKS 4a

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Remove duplicate lookups in SOCKS 5
Log tweaks
Streaming, i2ptunnel: Catch null destination in connect() calls
Synchronize Connection.setRemotePeer(); remove _remotePeerSet field
This commit is contained in:
zzz
2016-04-13 13:40:46 +00:00
parent 094cf14d4a
commit 5a2975ba65
9 changed files with 63 additions and 23 deletions
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8
apps/i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnelClientBase.java
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@ -626,7 +626,7 @@ public abstract class I2PTunnelClientBase extends I2PTunnelTask implements Runna
* adding it to the list of connections actually managed by this
* tunnel.
*
* @param dest The destination to connect to
* @param dest The destination to connect to, non-null
* @return a new I2PSocket
*/
public I2PSocket createI2PSocket(Destination dest) throws I2PException, ConnectException, NoRouteToHostException, InterruptedIOException {
@ -638,7 +638,7 @@ public abstract class I2PTunnelClientBase extends I2PTunnelTask implements Runna
* adding it to the list of connections actually managed by this
* tunnel.
*
* @param dest The destination to connect to
* @param dest The destination to connect to, non-null
* @param port The destination port to connect to 0 - 65535
* @return a new I2PSocket
* @since 0.9.9
@ -656,7 +656,7 @@ public abstract class I2PTunnelClientBase extends I2PTunnelTask implements Runna
* adding it to the list of connections actually managed by this
* tunnel.
*
* @param dest The destination to connect to
* @param dest The destination to connect to, non-null
* @param opt Option to be used to open when opening the socket
* @return a new I2PSocket
*
@ -666,6 +666,8 @@ public abstract class I2PTunnelClientBase extends I2PTunnelTask implements Runna
* @throws I2PException if there is some other I2P-related problem
*/
public I2PSocket createI2PSocket(Destination dest, I2PSocketOptions opt) throws I2PException, ConnectException, NoRouteToHostException, InterruptedIOException {
if (dest == null)
throw new NullPointerException();
I2PSocket i2ps;
verifySocketManager();

27
apps/i2ptunnel/java/src/net/i2p/i2ptunnel/socks/SOCKS4aServer.java
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@ -22,6 +22,7 @@ import net.i2p.I2PException;
import net.i2p.client.streaming.I2PSocket;
import net.i2p.client.streaming.I2PSocketOptions;
import net.i2p.data.DataFormatException;
import net.i2p.data.Destination;
import net.i2p.util.HexDump;
import net.i2p.util.Log;
@ -212,14 +213,22 @@ public class SOCKS4aServer extends SOCKSServer {
try {
if (connHostName.toLowerCase(Locale.US).endsWith(".i2p") ||
connHostName.toLowerCase(Locale.US).endsWith(".onion")) {
_log.debug("connecting to " + connHostName + "...");
// Let's not due a new Dest for every request, huh?
// Let's not do a new Dest for every request, huh?
//I2PSocketManager sm = I2PSocketManagerFactory.createManager();
//destSock = sm.connect(I2PTunnel.destFromName(connHostName), null);
Destination dest = I2PAppContext.getGlobalContext().namingService().lookup(connHostName);
if (dest == null) {
try {
sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
} catch (IOException ioe) {}
throw new SOCKSException("Host not found");
}
if (_log.shouldDebug())
_log.debug("connecting to " + connHostName + "...");
Properties overrides = new Properties();
I2PSocketOptions sktOpts = t.buildOptions(overrides);
sktOpts.setPort(connPort);
destSock = t.createI2PSocket(I2PAppContext.getGlobalContext().namingService().lookup(connHostName), sktOpts);
destSock = t.createI2PSocket(dest, sktOpts);
} else if ("localhost".equals(connHostName) || "127.0.0.1".equals(connHostName)) {
String err = "No localhost accesses allowed through the Socks Proxy";
_log.error(err);
@ -249,10 +258,18 @@ public class SOCKS4aServer extends SOCKSServer {
}
int p = I2PAppContext.getGlobalContext().random().nextInt(proxies.size());
String proxy = proxies.get(p);
_log.debug("connecting to port " + connPort + " proxy " + proxy + " for " + connHostName + "...");
Destination dest = I2PAppContext.getGlobalContext().namingService().lookup(proxy);
if (dest == null) {
try {
sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
} catch (IOException ioe) {}
throw new SOCKSException("Outproxy not found");
}
if (_log.shouldDebug())
_log.debug("connecting to port " + connPort + " proxy " + proxy + " for " + connHostName + "...");
// this isn't going to work, these need to be socks outproxies so we need
// to do a socks session to them?
destSock = t.createI2PSocket(I2PAppContext.getGlobalContext().namingService().lookup(proxy));
destSock = t.createI2PSocket(dest);
}
confirmConnection();
_log.debug("connection confirmed - exchanging data...");

9
apps/i2ptunnel/java/src/net/i2p/i2ptunnel/socks/SOCKS5Server.java
View File

@ -363,8 +363,7 @@ public class SOCKS5Server extends SOCKSServer {
try {
if (connHostName.toLowerCase(Locale.US).endsWith(".i2p")) {
_log.debug("connecting to " + connHostName + "...");
// Let's not due a new Dest for every request, huh?
// Let's not do a new Dest for every request, huh?
//I2PSocketManager sm = I2PSocketManagerFactory.createManager();
//destSock = sm.connect(I2PTunnel.destFromName(connHostName), null);
Destination dest = I2PAppContext.getGlobalContext().namingService().lookup(connHostName);
@ -374,10 +373,12 @@ public class SOCKS5Server extends SOCKSServer {
} catch (IOException ioe) {}
throw new SOCKSException("Host not found");
}
if (_log.shouldDebug())
_log.debug("connecting to " + connHostName + "...");
Properties overrides = new Properties();
I2PSocketOptions sktOpts = t.buildOptions(overrides);
sktOpts.setPort(connPort);
destSock = t.createI2PSocket(I2PAppContext.getGlobalContext().namingService().lookup(connHostName), sktOpts);
destSock = t.createI2PSocket(dest, sktOpts);
} else if ("localhost".equals(connHostName) || "127.0.0.1".equals(connHostName)) {
String err = "No localhost accesses allowed through the Socks Proxy";
_log.error(err);
@ -468,7 +469,7 @@ public class SOCKS5Server extends SOCKSServer {
Destination dest = I2PAppContext.getGlobalContext().namingService().lookup(proxy);
if (dest == null)
throw new SOCKSException("Outproxy not found");
I2PSocket destSock = tun.createI2PSocket(I2PAppContext.getGlobalContext().namingService().lookup(proxy), proxyOpts);
I2PSocket destSock = tun.createI2PSocket(dest, proxyOpts);
DataOutputStream out = null;
DataInputStream in = null;
try {