package net.i2p.data.i2cp;
/*
* free (adj.): unencumbered; not under the control of others
* Written by jrandom in 2003 and released into the public domain
* with no warranty of any kind, either expressed or implied.
* It probably won't make your computer catch on fire, or eat
* your children, but it might. Use at your own risk.
*
*/
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import net.i2p.data.DataFormatException;
import net.i2p.data.LeaseSet;
import net.i2p.data.PrivateKey;
import net.i2p.data.SigningPrivateKey;
/**
* Defines the message a client sends to a router when authorizing
* the LeaseSet
*
* @author jrandom
*/
public class CreateLeaseSetMessage extends I2CPMessageImpl {
public final static int MESSAGE_TYPE = 4;
private SessionId _sessionId;
private LeaseSet _leaseSet;
private SigningPrivateKey _signingPrivateKey;
private PrivateKey _privateKey;
public CreateLeaseSetMessage() {
}
public SessionId getSessionId() {
return _sessionId;
}
/**
* Return the SessionId for this message.
*
* @since 0.9.21
*/
@Override
public SessionId sessionId() {
return _sessionId;
}
public void setSessionId(SessionId id) {
_sessionId = id;
}
public SigningPrivateKey getSigningPrivateKey() {
return _signingPrivateKey;
}
public void setSigningPrivateKey(SigningPrivateKey key) {
_signingPrivateKey = key;
}
public PrivateKey getPrivateKey() {
return _privateKey;
}
public void setPrivateKey(PrivateKey privateKey) {
_privateKey = privateKey;
}
public LeaseSet getLeaseSet() {
return _leaseSet;
}
public void setLeaseSet(LeaseSet leaseSet) {
_leaseSet = leaseSet;
}
@Override
protected void doReadMessage(InputStream in, int size) throws I2CPMessageException, IOException {
try {
_sessionId = new SessionId();
_sessionId.readBytes(in);
// Revocation is unimplemented.
// As the SPK comes before the LeaseSet, we don't know the key type.
// We could have some sort of callback or state setting so we get the
// expected type from the session. But for now, we just assume it's 20 bytes.
// Clients outside router context should throw in a dummy 20 bytes.
_signingPrivateKey = new SigningPrivateKey();
_signingPrivateKey.readBytes(in);
_privateKey = new PrivateKey();
_privateKey.readBytes(in);
_leaseSet = new LeaseSet();
_leaseSet.readBytes(in);
} catch (DataFormatException dfe) {
throw new I2CPMessageException("Error reading the CreateLeaseSetMessage", dfe);
}
}
@Override
protected byte[] doWriteMessage() throws I2CPMessageException, IOException {
if ((_sessionId == null) || (_signingPrivateKey == null) || (_privateKey == null) || (_leaseSet == null))
throw new I2CPMessageException("Unable to write out the message as there is not enough data");
int size = 4 // sessionId
+ _signingPrivateKey.length()
+ PrivateKey.KEYSIZE_BYTES
+ _leaseSet.size();
ByteArrayOutputStream os = new ByteArrayOutputStream(size);
try {
_sessionId.writeBytes(os);
_signingPrivateKey.writeBytes(os);
_privateKey.writeBytes(os);
_leaseSet.writeBytes(os);
} catch (DataFormatException dfe) {
throw new I2CPMessageException("Error writing out the message data", dfe);
}
return os.toByteArray();
}
public int getType() {
return MESSAGE_TYPE;
}
@Override
public String toString() {
StringBuilder buf = new StringBuilder();
buf.append("[CreateLeaseSetMessage: ");
buf.append("\n\tLeaseSet: ").append(getLeaseSet());
buf.append("\n\tSigningPrivateKey: ").append(getSigningPrivateKey());
buf.append("\n\tPrivateKey: ").append(getPrivateKey());
buf.append("\n\tSessionId: ").append(getSessionId());
buf.append("]");
return buf.toString();
}
}