/** what IP Alice is reachable on */
public void readIP(byte target[], int targetOffset) {
int offset = readBodyOffset() + 4;
int size = _message[offset] & 0xff;
offset++;
System.arraycopy(_message, offset, target, targetOffset, size);
if (_log.shouldLog(Log.DEBUG))
_log.debug("read alice ip: " + Base64.encode(target, targetOffset, size));
}
/** unused */
public void readChallengeSize(byte target[], int targetOffset) {
int offset = readBodyOffset() + 4;
offset += _message[offset] & 0xff;
offset += 1 + 2;
int sz = _message[offset] & 0xff;
offset++;
System.arraycopy(_message, offset, target, targetOffset, sz);
if (_log.shouldLog(Log.DEBUG)) _log.debug("read challenge data: " + Base64.encode(target));
}
public void readAliceIntroKey(byte target[], int targetOffset) {
int offset = readBodyOffset() + 4;
offset += _message[offset] & 0xff;
offset += 1 + 2;
int sz = _message[offset] & 0xff;
offset++;
offset += sz;
System.arraycopy(_message, offset, target, targetOffset, SessionKey.KEYSIZE_BYTES);
if (_log.shouldLog(Log.DEBUG))
_log.debug(
"read alice intro key: "
+ Base64.encode(target, targetOffset, SessionKey.KEYSIZE_BYTES)
+ " packet size: "
+ _payloadLength
+ " off: "
+ offset
+ " data: "
+ Base64.encode(_message));
}
public void toRawString(StringBuilder buf) throws DataFormatException {
UDPPacketReader.this.toRawString(buf);
buf.append(" payload: ");
int off = getFragmentBegin(0); // first fragment
off += 4 + 1; // messageId + fragment info
int size = ((int) DataHelper.fromLong(_message, off, 2)) & 0x3FFF;
off += 2;
buf.append(Base64.encode(_message, off, size));
}
public synchronized void receiveSessionCreated(UDPPacketReader.SessionCreatedReader reader) {
if (_currentState == OutboundState.OB_STATE_VALIDATION_FAILED) {
if (_log.shouldLog(Log.WARN)) _log.warn("Session created already failed");
return;
}
if (_receivedY != null) {
if (_log.shouldLog(Log.DEBUG)) _log.debug("Session created already received, ignoring");
return; // already received
}
_receivedY = new byte[UDPPacketReader.SessionCreatedReader.Y_LENGTH];
reader.readY(_receivedY, 0);
if (_aliceIP == null) _aliceIP = new byte[reader.readIPSize()];
reader.readIP(_aliceIP, 0);
_alicePort = reader.readPort();
_receivedRelayTag = reader.readRelayTag();
_receivedSignedOnTime = reader.readSignedOnTime();
_receivedEncryptedSignature = new byte[Signature.SIGNATURE_BYTES + 8];
reader.readEncryptedSignature(_receivedEncryptedSignature, 0);
_receivedIV = new byte[UDPPacket.IV_SIZE];
reader.readIV(_receivedIV, 0);
if (_log.shouldLog(Log.DEBUG))
_log.debug(
"Receive session created:Sig: "
+ Base64.encode(_receivedEncryptedSignature)
+ "receivedIV: "
+ Base64.encode(_receivedIV)
+ "AliceIP: "
+ Addresses.toString(_aliceIP)
+ " RelayTag: "
+ _receivedRelayTag
+ " SignedOn: "
+ _receivedSignedOnTime
+ ' '
+ this.toString());
if (_currentState == OutboundState.OB_STATE_UNKNOWN
|| _currentState == OutboundState.OB_STATE_REQUEST_SENT
|| _currentState == OutboundState.OB_STATE_INTRODUCED
|| _currentState == OutboundState.OB_STATE_PENDING_INTRO)
_currentState = OutboundState.OB_STATE_CREATED_RECEIVED;
packetReceived();
}
public long readSignedOnTime() {
int offset = readBodyOffset() + Y_LENGTH + 1 + readIPSize() + 2 + 4;
long rv = DataHelper.fromLong(_message, offset, 4);
if (_log.shouldLog(Log.DEBUG))
_log.debug(
"Signed on time offset: "
+ offset
+ " val: "
+ rv
+ "\nRawCreated: "
+ Base64.encode(_message, _payloadBeginOffset, _payloadLength));
return rv;
}
private Hash getHash(String name) {
String key = name.substring(PREFIX.length());
key = key.substring(0, 44);
// Hash h = new Hash();
try {
// h.fromBase64(key);
byte[] b = Base64.decode(key);
if (b == null) return null;
Hash h = Hash.create(b);
return h;
} catch (Exception dfe) {
_log.warn("Invalid base64 [" + key + "]", dfe);
return null;
}
}
/* Parse and execute a DEST message*/
protected boolean execDestMessage(String opcode, Properties props) {
if (opcode.equals("GENERATE")) {
if (!props.isEmpty()) {
_log.debug("Properties specified in DEST GENERATE message");
return false;
}
ByteArrayOutputStream priv = new ByteArrayOutputStream();
ByteArrayOutputStream pub = new ByteArrayOutputStream();
SAMUtils.genRandomKey(priv, pub);
return writeString(
"DEST REPLY"
+ " PUB="
+ Base64.encode(pub.toByteArray())
+ " PRIV="
+ Base64.encode(priv.toByteArray())
+ "\n");
} else {
_log.debug("Unrecognized DEST message opcode: \"" + opcode + "\"");
return false;
}
}
/* Parse and execute a DEST message*/
protected boolean execDestMessage(String opcode, Properties props) {
if (opcode.equals("GENERATE")) {
String sigTypeStr = props.getProperty("SIGNATURE_TYPE");
SigType sigType;
if (sigTypeStr != null) {
sigType = SigType.parseSigType(sigTypeStr);
if (sigType == null) {
writeString(
"DEST REPLY RESULT=I2P_ERROR MESSAGE=\"SIGNATURE_TYPE "
+ sigTypeStr
+ " unsupported\"\n");
return false;
}
} else {
sigType = SigType.DSA_SHA1;
}
ByteArrayOutputStream priv = new ByteArrayOutputStream(663);
ByteArrayOutputStream pub = new ByteArrayOutputStream(387);
SAMUtils.genRandomKey(priv, pub, sigType);
return writeString(
"DEST REPLY"
+ " PUB="
+ Base64.encode(pub.toByteArray())
+ " PRIV="
+ Base64.encode(priv.toByteArray())
+ "\n");
} else {
writeString("DEST REPLY RESULT=I2P_ERROR MESSAGE=\"DEST GENERATE required\"");
if (_log.shouldLog(Log.DEBUG))
_log.debug("Unrecognized DEST message opcode: \"" + opcode + "\"");
return false;
}
}
/**
* Verify: Alice's IP + Alice's port + Bob's IP + Bob's port + Alice's new relay tag + Bob's
* signed on time Caller must synch on this.
*/
private boolean verifySessionCreated() {
byte signed[] =
new byte
[256
+ 256 // X + Y
+ _aliceIP.length
+ 2
+ _bobIP.length
+ 2
+ 4 // sent relay tag
+ 4 // signed on time
];
int off = 0;
System.arraycopy(_sentX, 0, signed, off, _sentX.length);
off += _sentX.length;
System.arraycopy(_receivedY, 0, signed, off, _receivedY.length);
off += _receivedY.length;
System.arraycopy(_aliceIP, 0, signed, off, _aliceIP.length);
off += _aliceIP.length;
DataHelper.toLong(signed, off, 2, _alicePort);
off += 2;
System.arraycopy(_bobIP, 0, signed, off, _bobIP.length);
off += _bobIP.length;
DataHelper.toLong(signed, off, 2, _bobPort);
off += 2;
DataHelper.toLong(signed, off, 4, _receivedRelayTag);
off += 4;
DataHelper.toLong(signed, off, 4, _receivedSignedOnTime);
boolean valid =
_context
.dsa()
.verifySignature(_receivedSignature, signed, _remotePeer.getSigningPublicKey());
if (_log.shouldLog(Log.DEBUG) || (_log.shouldLog(Log.WARN) && !valid)) {
StringBuilder buf = new StringBuilder(128);
buf.append("Signed sessionCreated:");
buf.append(" Alice: ").append(Addresses.toString(_aliceIP, _alicePort));
buf.append(" Bob: ").append(Addresses.toString(_bobIP, _bobPort));
buf.append(" RelayTag: ").append(_receivedRelayTag);
buf.append(" SignedOn: ").append(_receivedSignedOnTime);
buf.append(" signature: ").append(Base64.encode(_receivedSignature.getData()));
if (valid) _log.debug(buf.toString());
else if (_log.shouldLog(Log.WARN)) _log.warn("INVALID: " + buf.toString());
}
return valid;
}
/**
* decrypt the signature (and subsequent pad bytes) with the additional layer of encryption using
* the negotiated key along side the packet's IV Caller must synch on this.
*/
private void decryptSignature() {
if (_receivedEncryptedSignature == null)
throw new NullPointerException("encrypted signature is null! this=" + this.toString());
else if (_sessionKey == null) throw new NullPointerException("SessionKey is null!");
else if (_receivedIV == null) throw new NullPointerException("IV is null!");
_context
.aes()
.decrypt(
_receivedEncryptedSignature,
0,
_receivedEncryptedSignature,
0,
_sessionKey,
_receivedIV,
_receivedEncryptedSignature.length);
byte signatureBytes[] = new byte[Signature.SIGNATURE_BYTES];
System.arraycopy(_receivedEncryptedSignature, 0, signatureBytes, 0, Signature.SIGNATURE_BYTES);
_receivedSignature = new Signature(signatureBytes);
if (_log.shouldLog(Log.DEBUG))
_log.debug("Decrypted received signature: " + Base64.encode(signatureBytes));
}
/** Verify with the "olddest" property's public key using the "oldsig" property */
public boolean hasValidInnerSig() {
if (props == null || name == null || dest == null) return false;
boolean rv = false;
// don't cache result
if (true) {
StringWriter buf = new StringWriter(1024);
String sig = props.getProperty(PROP_OLDSIG);
String olddest = props.getProperty(PROP_OLDDEST);
if (sig == null || olddest == null) return false;
buf.append(name);
buf.append(KV_SEPARATOR);
buf.append(dest);
try {
writeProps(buf, true, true);
} catch (IOException ioe) {
// won't happen
return false;
}
byte[] sdata = Base64.decode(sig);
if (sdata == null) return false;
Destination d;
try {
d = new Destination(olddest);
} catch (DataFormatException dfe) {
return false;
}
SigningPublicKey spk = d.getSigningPublicKey();
SigType type = spk.getType();
if (type == null) return false;
Signature s;
try {
s = new Signature(type, sdata);
} catch (IllegalArgumentException iae) {
return false;
}
rv = DSAEngine.getInstance().verifySignature(s, DataHelper.getUTF8(buf.toString()), spk);
}
return rv;
}
/* Parse and execute a SESSION message */
protected boolean execSessionMessage(String opcode, Properties props) {
String dest = "BUG!";
try {
if (opcode.equals("CREATE")) {
if ((getRawSession() != null)
|| (getDatagramSession() != null)
|| (getStreamSession() != null)) {
if (_log.shouldLog(Log.DEBUG))
_log.debug("Trying to create a session, but one still exists");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"Session already exists\"\n");
}
if (props.isEmpty()) {
if (_log.shouldLog(Log.DEBUG))
_log.debug("No parameters specified in SESSION CREATE message");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"No parameters for SESSION CREATE\"\n");
}
dest = props.getProperty("DESTINATION");
if (dest == null) {
if (_log.shouldLog(Log.DEBUG)) _log.debug("SESSION DESTINATION parameter not specified");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"DESTINATION not specified\"\n");
}
props.remove("DESTINATION");
String destKeystream = null;
if (dest.equals("TRANSIENT")) {
_log.debug("TRANSIENT destination requested");
ByteArrayOutputStream priv = new ByteArrayOutputStream(640);
SAMUtils.genRandomKey(priv, null);
destKeystream = Base64.encode(priv.toByteArray());
} else {
destKeystream = bridge.getKeystream(dest);
if (destKeystream == null) {
if (_log.shouldLog(Log.DEBUG))
_log.debug(
"Custom destination specified ["
+ dest
+ "] but it isn't known, creating a new one");
ByteArrayOutputStream baos = new ByteArrayOutputStream(640);
SAMUtils.genRandomKey(baos, null);
destKeystream = Base64.encode(baos.toByteArray());
bridge.addKeystream(dest, destKeystream);
} else {
if (_log.shouldLog(Log.DEBUG))
_log.debug("Custom destination specified [" + dest + "] and it is already known");
}
}
String style = props.getProperty("STYLE");
if (style == null) {
if (_log.shouldLog(Log.DEBUG)) _log.debug("SESSION STYLE parameter not specified");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"No SESSION STYLE specified\"\n");
}
props.remove("STYLE");
// Unconditionally override what the client may have set
// (iMule sets BestEffort) as None is more efficient
// and the client has no way to access delivery notifications
props.setProperty(I2PClient.PROP_RELIABILITY, I2PClient.PROP_RELIABILITY_NONE);
if (style.equals("RAW")) {
rawSession = new SAMRawSession(destKeystream, props, this);
} else if (style.equals("DATAGRAM")) {
datagramSession = new SAMDatagramSession(destKeystream, props, this);
} else if (style.equals("STREAM")) {
String dir = props.getProperty("DIRECTION");
if (dir == null) {
if (_log.shouldLog(Log.DEBUG))
_log.debug("No DIRECTION parameter in STREAM session, defaulting to BOTH");
dir = "BOTH";
} else if (!dir.equals("CREATE") && !dir.equals("RECEIVE") && !dir.equals("BOTH")) {
if (_log.shouldLog(Log.DEBUG))
_log.debug("Unknown DIRECTION parameter value: [" + dir + "]");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"Unknown DIRECTION parameter\"\n");
} else {
props.remove("DIRECTION");
}
streamSession = newSAMStreamSession(destKeystream, dir, props);
} else {
if (_log.shouldLog(Log.DEBUG))
_log.debug("Unrecognized SESSION STYLE: \"" + style + "\"");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"Unrecognized SESSION STYLE\"\n");
}
return writeString("SESSION STATUS RESULT=OK DESTINATION=" + dest + "\n");
} else {
if (_log.shouldLog(Log.DEBUG))
_log.debug("Unrecognized SESSION message opcode: \"" + opcode + "\"");
return writeString("SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"Unrecognized opcode\"\n");
}
} catch (DataFormatException e) {
if (_log.shouldLog(Log.DEBUG)) _log.debug("Invalid destination specified");
return writeString(
"SESSION STATUS RESULT=INVALID_KEY DESTINATION="
+ dest
+ " MESSAGE=\""
+ e.getMessage()
+ "\"\n");
} catch (I2PSessionException e) {
if (_log.shouldLog(Log.DEBUG)) _log.debug("I2P error when instantiating session", e);
return writeString(
"SESSION STATUS RESULT=I2P_ERROR DESTINATION="
+ dest
+ " MESSAGE=\""
+ e.getMessage()
+ "\"\n");
} catch (SAMException e) {
_log.error("Unexpected SAM error", e);
return writeString(
"SESSION STATUS RESULT=I2P_ERROR DESTINATION="
+ dest
+ " MESSAGE=\""
+ e.getMessage()
+ "\"\n");
} catch (IOException e) {
_log.error("Unexpected IOException", e);
return writeString(
"SESSION STATUS RESULT=I2P_ERROR DESTINATION="
+ dest
+ " MESSAGE=\""
+ e.getMessage()
+ "\"\n");
}
}
public void toRawString(StringBuilder buf) {
if (_message != null) buf.append(Base64.encode(_message, _payloadBeginOffset, _payloadLength));
}
/* Parse and execute a SESSION message */
@Override
protected boolean execSessionMessage(String opcode, Properties props) {
String dest = "BUG!";
String nick = null;
boolean ok = false;
try {
if (opcode.equals("CREATE")) {
if ((this.getRawSession() != null)
|| (this.getDatagramSession() != null)
|| (this.getStreamSession() != null)) {
_log.debug("Trying to create a session, but one still exists");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"Session already exists\"\n");
}
if (props == null) {
_log.debug("No parameters specified in SESSION CREATE message");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"No parameters for SESSION CREATE\"\n");
}
dest = props.getProperty("DESTINATION");
if (dest == null) {
_log.debug("SESSION DESTINATION parameter not specified");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"DESTINATION not specified\"\n");
}
props.remove("DESTINATION");
if (dest.equals("TRANSIENT")) {
_log.debug("TRANSIENT destination requested");
ByteArrayOutputStream priv = new ByteArrayOutputStream(640);
SAMUtils.genRandomKey(priv, null);
dest = Base64.encode(priv.toByteArray());
} else {
_log.debug("Custom destination specified [" + dest + "]");
}
try {
SAMUtils.checkPrivateDestination(dest);
} catch (SAMUtils.InvalidDestination e) {
return writeString("SESSION STATUS RESULT=INVALID_KEY\n");
}
nick = props.getProperty("ID");
if (nick == null) {
_log.debug("SESSION ID parameter not specified");
return writeString("SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"ID not specified\"\n");
}
props.remove("ID");
String style = props.getProperty("STYLE");
if (style == null) {
_log.debug("SESSION STYLE parameter not specified");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"No SESSION STYLE specified\"\n");
}
props.remove("STYLE");
// Unconditionally override what the client may have set
// (iMule sets BestEffort) as None is more efficient
// and the client has no way to access delivery notifications
i2cpProps.setProperty(I2PClient.PROP_RELIABILITY, I2PClient.PROP_RELIABILITY_NONE);
// Record the session in the database sSessionsHash
Properties allProps = new Properties();
allProps.putAll(i2cpProps);
allProps.putAll(props);
try {
sSessionsHash.put(nick, new SessionRecord(dest, allProps, this));
} catch (SessionsDB.ExistingId e) {
_log.debug("SESSION ID parameter already in use");
return writeString("SESSION STATUS RESULT=DUPLICATED_ID\n");
} catch (SessionsDB.ExistingDest e) {
return writeString("SESSION STATUS RESULT=DUPLICATED_DEST\n");
}
// Create the session
if (style.equals("RAW")) {
DatagramServer.getInstance(i2cpProps);
rawSession = newSAMRawSession(nick);
this.session = rawSession;
} else if (style.equals("DATAGRAM")) {
DatagramServer.getInstance(i2cpProps);
datagramSession = newSAMDatagramSession(nick);
this.session = datagramSession;
} else if (style.equals("STREAM")) {
streamSession = newSAMStreamSession(nick);
this.session = streamSession;
} else {
_log.debug("Unrecognized SESSION STYLE: \"" + style + "\"");
return writeString(
"SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"Unrecognized SESSION STYLE\"\n");
}
ok = true;
return writeString("SESSION STATUS RESULT=OK DESTINATION=" + dest + "\n");
} else {
_log.debug("Unrecognized SESSION message opcode: \"" + opcode + "\"");
return writeString("SESSION STATUS RESULT=I2P_ERROR MESSAGE=\"Unrecognized opcode\"\n");
}
} catch (DataFormatException e) {
_log.debug("Invalid destination specified");
return writeString(
"SESSION STATUS RESULT=INVALID_KEY DESTINATION="
+ dest
+ " MESSAGE=\""
+ e.getMessage()
+ "\"\n");
} catch (I2PSessionException e) {
_log.debug("I2P error when instantiating session", e);
return writeString(
"SESSION STATUS RESULT=I2P_ERROR DESTINATION="
+ dest
+ " MESSAGE=\""
+ e.getMessage()
+ "\"\n");
} catch (SAMException e) {
_log.info("Funny SAM error", e);
return writeString(
"SESSION STATUS RESULT=I2P_ERROR DESTINATION="
+ dest
+ " MESSAGE=\""
+ e.getMessage()
+ "\"\n");
} catch (IOException e) {
_log.error("Unexpected IOException", e);
return writeString(
"SESSION STATUS RESULT=I2P_ERROR DESTINATION="
+ dest
+ " MESSAGE=\""
+ e.getMessage()
+ "\"\n");
} finally {
// unregister the session if it has not been created
if (!ok && nick != null) {
sSessionsHash.del(nick);
session = null;
}
}
}
@Override
public String toString() {
StringBuilder buf = new StringBuilder(512);
long msAgo = _context.clock().now() - readTimestamp() * 1000;
buf.append("Data packet sent ").append(msAgo).append("ms ago ");
buf.append("IV ");
buf.append(
Base64.encode(_message, _payloadBeginOffset - UDPPacket.IV_SIZE, UDPPacket.IV_SIZE));
buf.append(" ");
int off = readBodyOffset() + 1;
if (readACKsIncluded()) {
int numACKs = _message[off] & 0xff;
off++;
buf.append("with ACKs for ");
for (int i = 0; i < numACKs; i++) {
buf.append(DataHelper.fromLong(_message, off, 4)).append(' ');
off += 4;
}
}
if (readACKBitfieldsIncluded()) {
int numBitfields = _message[off] & 0xff;
off++;
buf.append("with partial ACKs for ");
try {
for (int i = 0; i < numBitfields; i++) {
PacketACKBitfield bf = new PacketACKBitfield(off);
buf.append(bf.getMessageId()).append(' ');
off += bf.getByteLength();
}
} catch (DataFormatException dfe) {
buf.append("CORRUPT");
return buf.toString();
}
}
if (readExtendedDataIncluded()) {
int size = _message[off] & 0xff;
off++;
buf.append("with extended size of ");
buf.append(size);
buf.append(' ');
off += size;
}
int numFragments = _message[off] & 0xff;
off++;
buf.append("with fragmentCount of ");
buf.append(numFragments);
buf.append(' ');
for (int i = 0; i < numFragments; i++) {
buf.append("containing messageId ");
buf.append(DataHelper.fromLong(_message, off, 4));
off += 4;
int fragNum = (_message[off] & 0xFF) >>> 1;
boolean isLast = (_message[off] & 1) != 0;
off++;
buf.append(" frag# ").append(fragNum);
buf.append(" isLast? ").append(isLast);
buf.append(" info ").append(_message[off - 1]);
int size = ((int) DataHelper.fromLong(_message, off, 2)) & 0x3FFF;
off += 2;
buf.append(" with ").append(size).append(" bytes; ");
off += size;
}
return buf.toString();
}
private void runTest() {
I2PAppContext ctx = I2PAppContext.getGlobalContext();
Log log = ctx.logManager().getLog(getClass());
List order = pickOrder(ctx);
TunnelCreatorConfig cfg = createConfig(ctx);
_replyRouter = new Hash();
byte h[] = new byte[Hash.HASH_LENGTH];
Arrays.fill(h, (byte) 0xFF);
_replyRouter.setData(h);
_replyTunnel = 42;
// populate and encrypt the message
BuildMessageGenerator gen = new BuildMessageGenerator();
TunnelBuildMessage msg = new TunnelBuildMessage(ctx);
for (int i = 0; i < BuildMessageGenerator.ORDER.length; i++) {
int hop = ((Integer) order.get(i)).intValue();
PublicKey key = null;
if (hop < _pubKeys.length) key = _pubKeys[hop];
gen.createRecord(i, hop, msg, cfg, _replyRouter, _replyTunnel, ctx, key);
}
gen.layeredEncrypt(ctx, msg, cfg, order);
log.debug(
"\n================================================================"
+ "\nMessage fully encrypted"
+ "\n================================================================");
// now msg is fully encrypted, so lets go through the hops, decrypting and replying
// as necessary
BuildMessageProcessor proc = new BuildMessageProcessor(ctx);
for (int i = 0; i < cfg.getLength(); i++) {
// this not only decrypts the current hop's record, but encrypts the other records
// with the reply key
BuildRequestRecord req = proc.decrypt(ctx, msg, _peers[i], _privKeys[i]);
if (req == null) {
// no records matched the _peers[i], or the decryption failed
throw new RuntimeException("foo @ " + i);
}
long ourId = req.readReceiveTunnelId();
byte replyIV[] = req.readReplyIV();
long nextId = req.readNextTunnelId();
Hash nextPeer = req.readNextIdentity();
boolean isInGW = req.readIsInboundGateway();
boolean isOutEnd = req.readIsOutboundEndpoint();
long time = req.readRequestTime();
long now = (ctx.clock().now() / (60l * 60l * 1000l)) * (60 * 60 * 1000);
int ourSlot = -1;
BuildResponseRecord resp = new BuildResponseRecord();
byte reply[] = resp.create(ctx, 0, req.readReplyKey(), req.readReplyIV(), -1);
for (int j = 0; j < TunnelBuildMessage.RECORD_COUNT; j++) {
if (msg.getRecord(j) == null) {
ourSlot = j;
msg.setRecord(j, new ByteArray(reply));
break;
}
}
log.debug(
"Read slot "
+ ourSlot
+ " containing hop "
+ i
+ " @ "
+ _peers[i].toBase64()
+ " receives on "
+ ourId
+ " w/ replyIV "
+ Base64.encode(replyIV)
+ " sending to "
+ nextId
+ " on "
+ nextPeer.toBase64()
+ " inGW? "
+ isInGW
+ " outEnd? "
+ isOutEnd
+ " time difference "
+ (now - time));
}
log.debug(
"\n================================================================"
+ "\nAll hops traversed and replies gathered"
+ "\n================================================================");
// now all of the replies are populated, toss 'em into a reply message and handle it
TunnelBuildReplyMessage reply = new TunnelBuildReplyMessage(ctx);
for (int i = 0; i < TunnelBuildMessage.RECORD_COUNT; i++) reply.setRecord(i, msg.getRecord(i));
BuildReplyHandler handler = new BuildReplyHandler();
int statuses[] = handler.decrypt(ctx, reply, cfg, order);
if (statuses == null) throw new RuntimeException("bar");
boolean allAgree = true;
for (int i = 0; i < cfg.getLength(); i++) {
Hash peer = cfg.getPeer(i);
int record = ((Integer) order.get(i)).intValue();
if (statuses[record] != 0) allAgree = false;
// else
// penalize peer according to the rejection cause
}
log.debug(
"\n================================================================"
+ "\nAll peers agree? "
+ allAgree
+ "\n================================================================");
}
