public Enum<?> putConfirm(PublicKey publicKey, Number640 key, Data newData) {
RangeLock<Number640>.Range lock = lock(key);
try {
if (!securityEntryCheck(
key.locationAndDomainAndContentKey(),
publicKey,
newData.publicKey(),
newData.isProtectedEntry())) {
return PutStatus.FAILED_SECURITY;
}
final Data data = backend.get(key);
if (data != null) {
// remove prepare flag
data.prepareFlag(false);
data.validFromMillis(newData.validFromMillis());
data.ttlSeconds(newData.ttlSeconds());
long expiration = data.expirationMillis();
// handle timeout
backend.addTimeout(key, expiration);
backend.put(key, data);
// don't release data as we just update
return PutStatus.OK;
} else {
return PutStatus.NOT_FOUND;
}
} finally {
newData.release();
lock.unlock();
}
// TODO: check for FORKS!
}
public static int encodeData(ProtocolChunkedInput input, final Message message, Data data) {
int count = 4 + 4;
// encode entry protection in millis as the sign bit. Thus the max value
// of millis is 2^31, which is more than enough
int seconds = data.getTTLSeconds();
seconds = data.isProtectedEntry() ? seconds | 0x80000000 : seconds & 0x7FFFFFFF;
input.copyToCurrent(seconds);
input.copyToCurrent(data.getLength());
// the real data
input.copyToCurrent(data.getData(), data.getOffset(), data.getLength());
count += data.getLength();
return count;
}
public Enum<?> updateMeta(PublicKey publicKey, Number640 key, Data newData) {
RangeLock<Number640>.Range lock = lock(key);
try {
if (!securityEntryCheck(
key.locationAndDomainAndContentKey(),
publicKey,
newData.publicKey(),
newData.isProtectedEntry())) {
return PutStatus.FAILED_SECURITY;
}
final Data data = backend.get(key);
boolean changed = false;
if (data != null && newData.publicKey() != null) {
data.publicKey(newData.publicKey());
changed = true;
}
if (data != null && newData.isSigned()) {
data.signature(newData.signature());
changed = true;
}
if (data != null) {
data.validFromMillis(newData.validFromMillis());
data.ttlSeconds(newData.ttlSeconds());
changed = true;
}
if (changed) {
long expiration = data.expirationMillis();
// handle timeout
backend.addTimeout(key, expiration);
// no release of old data, as we just update it
backend.put(key, data);
return PutStatus.OK;
} else {
return PutStatus.NOT_FOUND;
}
} finally {
newData.release();
lock.unlock();
}
}
/**
* Decodes the payload from a Netty buffer in a big switch
*
* @param content The content type
* @param buffer The buffer to read from
* @param message The message to store the results
* @throws IndexOutOfBoundsException If a buffer is read beyond its limits
* @throws NoSuchAlgorithmException
* @throws SignatureException
* @throws InvalidKeyException
* @throws InvalidKeySpecException
* @throws InvalidKeySpecException
* @throws IOException
* @throws DecoderException
* @throws ASN1Exception
* @throws UnsupportedEncodingException If UTF-8 is not there
*/
public static boolean decodePayload(
final Content content, final ChannelBuffer buffer, final Message message)
throws InvalidKeyException, SignatureException, NoSuchAlgorithmException,
InvalidKeySpecException, IOException, DecoderException {
final int len;
byte[] me;
switch (content) {
case KEY:
if (buffer.readableBytes() < 20) return false;
message.setKey0(readID(buffer));
return true;
case KEY_KEY:
if (buffer.readableBytes() < 40) return false;
message.setKeyKey0(readID(buffer), readID(buffer));
return true;
case MAP_KEY_DATA:
if (buffer.readableBytes() < 4) return false;
int size = buffer.readInt();
Map<Number160, Data> result = new HashMap<Number160, Data>(size);
for (int i = 0; i < size; i++) {
if (buffer.readableBytes() < 20) return false;
Number160 key = readID(buffer);
final Data data = decodeData(new ChannelDecoder(buffer), message.getSender());
if (data == null) return false;
if (message.isRequest()) {
if (data.isProtectedEntry() && message.getPublicKey() == null)
throw new DecoderException(
"You indicated that you want to protect the data, but you did not provide or provided too late a public key.");
data.setPublicKey(message.getPublicKey());
}
result.put(key, data);
}
message.setDataMap0(result);
return true;
case MAP_KEY_KEY:
if (buffer.readableBytes() < 4) return false;
len = buffer.readInt();
if (buffer.readableBytes() < ((20 + 20) * len)) return false;
final Map<Number160, Number160> keyMap = new HashMap<Number160, Number160>();
for (int i = 0; i < len; i++) {
final Number160 key1 = readID(buffer);
final Number160 key2 = readID(buffer);
keyMap.put(key1, key2);
}
message.setKeyMap0(keyMap);
return true;
case SET_KEYS:
// can be 31bit long ~ 2GB
if (buffer.readableBytes() < 4) return false;
len = buffer.readInt();
if (buffer.readableBytes() < (20 * len)) return false;
final Collection<Number160> tmp = new ArrayList<Number160>(len);
for (int i = 0; i < len; i++) {
Number160 key = readID(buffer);
tmp.add(key);
}
message.setKeys0(tmp);
return true;
case SET_NEIGHBORS:
if (buffer.readableBytes() < 1) return false;
len = buffer.readUnsignedByte();
if (buffer.readableBytes() < (len * PeerAddress.SIZE_IPv4)) return false;
final Collection<PeerAddress> neighbors = new ArrayList<PeerAddress>(len);
for (int i = 0; i < len; i++) {
PeerAddress peerAddress = readPeerAddress(buffer);
if (peerAddress == null) return false;
neighbors.add(peerAddress);
}
message.setNeighbors0(neighbors);
return true;
case SET_TRACKER_DATA:
if (buffer.readableBytes() < 1) return false;
len = buffer.readUnsignedByte();
if (buffer.readableBytes() < (len * (PeerAddress.SIZE_IPv4 + 1))) return false;
final Collection<TrackerData> trackerDatas = new ArrayList<TrackerData>(len);
for (int i = 0; i < len; i++) {
PeerAddress peerAddress = readPeerAddress(buffer);
if (peerAddress == null) return false;
byte[] attachment = null;
int offset = 0;
int length = 0;
if (buffer.readableBytes() < 1) return false;
byte miniHeader = buffer.readByte();
if (miniHeader != 0) {
if (buffer.readableBytes() < 4) return false;
length = buffer.readInt();
if (buffer.readableBytes() < length) return false;
attachment = new byte[length];
buffer.readBytes(attachment);
}
trackerDatas.add(
new TrackerData(peerAddress, message.getSender(), attachment, offset, length));
}
message.setTrackerData0(trackerDatas);
return true;
case CHANNEL_BUFFER:
if (buffer.readableBytes() < 4) return false;
len = buffer.readInt();
if (buffer.readableBytes() < len) return false;
// you can only use slice if no execution handler is in place,
// otherwise, you will overwrite stuff
final ChannelBuffer tmpBuffer = buffer.slice(buffer.readerIndex(), len);
buffer.skipBytes(len);
message.setPayload0(tmpBuffer);
return true;
case LONG:
if (buffer.readableBytes() < 8) return false;
message.setLong0(buffer.readLong());
return true;
case INTEGER:
if (buffer.readableBytes() < 4) return false;
message.setInteger0(buffer.readInt());
return true;
case PUBLIC_KEY:
case PUBLIC_KEY_SIGNATURE:
if (buffer.readableBytes() < 2) return false;
len = buffer.readUnsignedShort();
me = new byte[len];
if (buffer.readableBytes() < len) return false;
message.setPublicKey0(decodePublicKey(new ChannelDecoder(buffer), me));
if (content == Content.PUBLIC_KEY_SIGNATURE) {
message.setHintSign(true);
}
return true;
case EMPTY:
case RESERVED1:
case RESERVED2:
case RESERVED3:
default:
return true;
}
}
public Map<Number640, Enum<?>> putAll(
final NavigableMap<Number640, Data> dataMap,
PublicKey publicKey,
boolean putIfAbsent,
boolean domainProtection,
boolean sendSelf) {
if (dataMap.isEmpty()) {
return Collections.emptyMap();
}
final Number640 min = dataMap.firstKey();
final Number640 max = dataMap.lastKey();
final Map<Number640, Enum<?>> retVal = new HashMap<Number640, Enum<?>>();
final HashSet<Number480> keysToCheck = new HashSet<Number480>();
final RangeLock<Number640>.Range lock = lock(min, max);
try {
for (Map.Entry<Number640, Data> entry : dataMap.entrySet()) {
Number640 key = entry.getKey();
keysToCheck.add(key.locationAndDomainAndContentKey());
Data newData = entry.getValue();
if (!securityDomainCheck(
key.locationAndDomainKey(), publicKey, publicKey, domainProtection)) {
retVal.put(key, PutStatus.FAILED_SECURITY);
newData.release();
continue;
}
// We need this check in case we did not use the encoder/decoder,
// which is the case if we send the message to ourself. In that
// case, the public key of the data is never set to the message
// publick key, if the publick key of the data was null.
final PublicKey dataKey;
if (sendSelf && newData.publicKey() == null) {
dataKey = publicKey;
} else {
dataKey = newData.publicKey();
}
if (!securityEntryCheck(
key.locationAndDomainAndContentKey(), publicKey, dataKey, newData.isProtectedEntry())) {
retVal.put(key, PutStatus.FAILED_SECURITY);
newData.release();
continue;
}
final Data oldDataGet = backend.get(key);
if (oldDataGet != null) {
if (putIfAbsent) {
retVal.put(key, PutStatus.FAILED_NOT_ABSENT);
newData.release();
continue;
}
if (oldDataGet.isDeleted()) {
retVal.put(key, PutStatus.DELETED);
newData.release();
continue;
}
if (!oldDataGet.basedOnSet().equals(newData.basedOnSet())) {
retVal.put(key, PutStatus.VERSION_FORK);
newData.release();
continue;
}
}
final Data oldDataPut = backend.put(key, newData);
long expiration = newData.expirationMillis();
// handle timeout
backend.addTimeout(key, expiration);
if (newData.hasPrepareFlag()) {
retVal.put(key, PutStatus.OK_PREPARED);
} else {
retVal.put(key, PutStatus.OK);
}
if (oldDataPut != null && oldDataPut != newData) {
oldDataPut.release();
}
}
for (Number480 key : keysToCheck) {
// now check for forks
Number640 minVersion = new Number640(key, Number160.ZERO);
Number640 maxVersion = new Number640(key, Number160.MAX_VALUE);
NavigableMap<Number640, Data> tmp = backend.subMap(minVersion, maxVersion);
tmp = filterCopyOrig(tmp, -1, true);
NavigableMap<Number640, Data> heads = getLatestInternalOrig(tmp);
final boolean forked = heads.size() > 1;
for (final Map.Entry<Number640, Data> entry : heads.entrySet()) {
if (forked) {
if (retVal.containsKey(entry.getKey())) {
retVal.put(entry.getKey(), PutStatus.VERSION_FORK);
}
}
}
// now remove old versions
if (maxVersions > 0) {
NavigableMap<Number640, Data> versions = backend.subMap(minVersion, maxVersion);
while (!versions.isEmpty()
&& versions.firstKey().versionKey().timestamp() + maxVersions
<= versions.lastKey().versionKey().timestamp()) {
Map.Entry<Number640, Data> entry = versions.pollFirstEntry();
Data removed = backend.remove(entry.getKey(), true);
if (removed != null) {
removed.release();
}
backend.removeTimeout(entry.getKey());
}
}
}
return retVal;
} finally {
lock.unlock();
}
}
