void disconnect() {
PeerState s = state;
if (s != null) {
// try to save partial piece
if (this.deregister) {
PeerListener p = s.listener;
if (p != null) {
List<PartialPiece> pcs = s.returnPartialPieces();
if (!pcs.isEmpty()) p.savePartialPieces(this, pcs);
// now covered by savePartialPieces
// p.markUnrequested(this);
}
}
state = null;
PeerConnectionIn in = s.in;
if (in != null) in.disconnect();
PeerConnectionOut out = s.out;
if (out != null) out.disconnect();
PeerListener pl = s.listener;
if (pl != null) pl.disconnected(this);
}
I2PSocket csock = sock;
sock = null;
if ((csock != null) && (!csock.isClosed())) {
try {
csock.close();
} catch (IOException ioe) {
_log.warn("Error disconnecting " + toString(), ioe);
}
}
}
/**
* Act as a SOCKS 5 client to connect to an outproxy
*
* @return open socket or throws error
* @since 0.8.2
*/
private I2PSocket outproxyConnect(I2PSOCKSTunnel tun, String proxy)
throws IOException, SOCKSException, DataFormatException, I2PException {
Properties overrides = new Properties();
overrides.setProperty("option.i2p.streaming.connectDelay", "1000");
I2PSocketOptions proxyOpts = tun.buildOptions(overrides);
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);
try {
DataOutputStream out = new DataOutputStream(destSock.getOutputStream());
boolean authAvail =
Boolean.parseBoolean(props.getProperty(I2PTunnelHTTPClientBase.PROP_OUTPROXY_AUTH));
String configUser = null;
String configPW = null;
if (authAvail) {
configUser = props.getProperty(I2PTunnelHTTPClientBase.PROP_OUTPROXY_USER_PREFIX + proxy);
configPW = props.getProperty(I2PTunnelHTTPClientBase.PROP_OUTPROXY_PW_PREFIX + proxy);
if (configUser == null || configPW == null) {
configUser = props.getProperty(I2PTunnelHTTPClientBase.PROP_OUTPROXY_USER);
configPW = props.getProperty(I2PTunnelHTTPClientBase.PROP_OUTPROXY_PW);
if (configUser == null || configPW == null) authAvail = false;
}
}
// send the init
out.writeByte(SOCKS_VERSION_5);
if (authAvail) {
out.writeByte(2);
out.writeByte(Method.NO_AUTH_REQUIRED);
out.writeByte(Method.USERNAME_PASSWORD);
} else {
out.writeByte(1);
out.writeByte(Method.NO_AUTH_REQUIRED);
}
out.flush();
// read init reply
DataInputStream in = new DataInputStream(destSock.getInputStream());
// is this right or should we not try to do 5-to-4 conversion?
int hisVersion = in.readByte();
if (hisVersion != SOCKS_VERSION_5 /* && addrtype == AddressType.DOMAINNAME */)
throw new SOCKSException("SOCKS Outproxy is not Version 5");
// else if (hisVersion != 4)
// throw new SOCKSException("Unsupported SOCKS Outproxy Version");
int method = in.readByte();
if (method == Method.NO_AUTH_REQUIRED) {
// good
} else if (method == Method.USERNAME_PASSWORD) {
if (authAvail) {
// send the auth
out.writeByte(AUTH_VERSION);
byte[] user = configUser.getBytes("UTF-8");
byte[] pw = configPW.getBytes("UTF-8");
out.writeByte(user.length);
out.write(user);
out.writeByte(pw.length);
out.write(pw);
out.flush();
// read the auth reply
if (in.readByte() != AUTH_VERSION)
throw new SOCKSException("Bad auth version from outproxy");
if (in.readByte() != AUTH_SUCCESS)
throw new SOCKSException("Outproxy authorization failure");
} else {
throw new SOCKSException(
"Outproxy requires authorization, please configure username/password");
}
} else {
throw new SOCKSException("Outproxy authorization failure");
}
// send the connect command
out.writeByte(SOCKS_VERSION_5);
out.writeByte(Command.CONNECT);
out.writeByte(0); // reserved
out.writeByte(addressType);
if (addressType == AddressType.IPV4) {
out.write(InetAddress.getByName(connHostName).getAddress());
} else if (addressType == AddressType.DOMAINNAME) {
byte[] d = connHostName.getBytes("ISO-8859-1");
out.writeByte(d.length);
out.write(d);
} else {
// shouldn't happen
throw new SOCKSException("Unknown address type for outproxy?");
}
out.writeShort(connPort);
out.flush();
// read the connect reply
hisVersion = in.readByte();
if (hisVersion != SOCKS_VERSION_5)
throw new SOCKSException("Outproxy response is not Version 5");
int reply = in.readByte();
in.readByte(); // reserved
int type = in.readByte();
int count = 0;
if (type == AddressType.IPV4) {
count = 4;
} else if (type == AddressType.DOMAINNAME) {
count = in.readUnsignedByte();
} else if (type == AddressType.IPV6) {
count = 16;
} else {
throw new SOCKSException("Unsupported address type in outproxy response");
}
byte[] addr = new byte[count];
in.readFully(addr); // address
in.readUnsignedShort(); // port
if (reply != Reply.SUCCEEDED)
throw new SOCKSException("Outproxy rejected request, response = " + reply);
// throw away the address in the response
// todo pass the response through?
} catch (IOException e) {
try {
destSock.close();
} catch (IOException ioe) {
}
throw e;
} catch (SOCKSException e) {
try {
destSock.close();
} catch (IOException ioe) {
}
throw e;
}
// that's it, caller will send confirmation to our client
return destSock;
}
