OSF2FAuthStatus.java

package edu.washington.cs.oneswarm.f2f.messaging.invitation;

import org.gudy.azureus2.core3.util.DirectByteBuffer;
import org.gudy.azureus2.core3.util.DirectByteBufferPool;

import com.aelitis.azureus.core.peermanager.messaging.Message;
import com.aelitis.azureus.core.peermanager.messaging.MessageException;

public class OSF2FAuthStatus implements OSF2FAuthMessage {

    private final byte version;
    private final int status;

    private String description;
    private DirectByteBuffer buffer;
    private final static int MESSAGE_LENGTH = 4;
    public static final int STATUS_INVITE_KEY_OK = 0;
    public static final int STATUS_INVITE_ERR_PUB_KEY = -1;
    public static final int STATUS_INVITE_ERR_INV_KEY = -2;
    public static final int STATUS_INVITE_ERR_PROTOCOL = -3;

    public OSF2FAuthStatus(byte version, int response) {
        this.status = response;
        this.version = version;
    }

    public OSF2FAuthStatus clone() {
        return new OSF2FAuthStatus(this.getVersion(), this.getStatus());
    }

    public String getID() {
        return OSF2FAuthMessage.ID_OSA_AUTH_STATUS;
    }

    public byte[] getIDBytes() {
        return OSF2FAuthMessage.ID_OSA_AUTH_STATUS_BYTES;
    }

    public String getFeatureID() {
        return OSF2FAuthMessage.OSA_FEATURE_ID;
    }

    public int getFeatureSubID() {
        return OSF2FAuthMessage.SUBID_OSA_AUTH_STATUS;
    }

    public int getType() {
        return Message.TYPE_PROTOCOL_PAYLOAD;
    }

    public byte getVersion() {
        return version;
    };

    public String getDescription() {
        if (description == null) {
            description = OSF2FAuthMessage.ID_OSA_AUTH_STATUS + "\tauth_status=" + status;
        }

        return description;
    }

    public DirectByteBuffer[] getData() {
        if (buffer == null) {
            buffer = DirectByteBufferPool.getBuffer(DirectByteBuffer.AL_MSG, MESSAGE_LENGTH);
            buffer.putInt(DirectByteBuffer.SS_MSG, status);
            buffer.flip(DirectByteBuffer.SS_MSG);
        }
        return new DirectByteBuffer[] { buffer };
    }

    public Message deserialize(DirectByteBuffer data, byte version) throws MessageException {
        if (data == null) {
            throw new MessageException("[" + getID() + "] decode error: data == null");
        }

        if (data.remaining(DirectByteBuffer.SS_MSG) != MESSAGE_LENGTH) {
            throw new MessageException("[" + getID() + "] decode error: payload.remaining["
                    + data.remaining(DirectByteBuffer.SS_MSG) + "] != " + MESSAGE_LENGTH);
        }
        byte response = data.get(DirectByteBuffer.SS_MSG);
        data.returnToPool();
        return new OSF2FAuthStatus(version, response);
    }

    public void destroy() {
        if (buffer != null)
            buffer.returnToPool();
    }

    public int getMessageSize() {
        return MESSAGE_LENGTH;
    }

    public int getStatus() {
        return status;
    }
}