/*

 * otr4j, the open source java otr library.

 *

 * Distributable under LGPL license.

 * See terms of license at gnu.org.

 */

package net.java.otr4j.io.messages;

import java.util.Arrays;

import javax.crypto.interfaces.DHPublicKey;

/**

 * 

 * @author George Politis

 */

public class DataMessage extends AbstractEncodedMessage {

	// Fields.

	public byte[] mac;

	public byte[] oldMACKeys;

	public int flags;

	public int senderKeyID;

	public int recipientKeyID;

	public DHPublicKey nextDH;

	public byte[] ctr;

	public byte[] encryptedMessage;

	// Ctor.

	public DataMessage(int protocolVersion, int flags, int senderKeyID,

			int recipientKeyID, DHPublicKey nextDH, byte[] ctr,

			byte[] encryptedMessage, byte[] mac, byte[] oldMacKeys) {

		super(MESSAGE_DATA, protocolVersion);

		this.flags = flags;

		this.senderKeyID = senderKeyID;

		this.recipientKeyID = recipientKeyID;

		this.nextDH = nextDH;

		this.ctr = ctr;

		this.encryptedMessage = encryptedMessage;

		this.mac = mac;

		this.oldMACKeys = oldMacKeys;

	}

	public DataMessage(MysteriousT t, byte[] mac, byte[] oldMacKeys) {

		this(t.protocolVersion, t.flags, t.senderKeyID, t.recipientKeyID,

				t.nextDH, t.ctr, t.encryptedMessage, mac, oldMacKeys);

	}

	// Methods.

	public MysteriousT getT() {

		return new MysteriousT(protocolVersion, flags, senderKeyID,

				recipientKeyID, nextDH, ctr, encryptedMessage);

	}

	@Override

	public int hashCode() {

		final int prime = 31;

		int result = super.hashCode();

		result = prime * result + Arrays.hashCode(ctr);

		result = prime * result + Arrays.hashCode(encryptedMessage);

		result = prime * result + flags;

		result = prime * result + Arrays.hashCode(mac);

		// TODO: Needs work.

		result = prime * result + ((nextDH == null) ? 0 : nextDH.hashCode());

		result = prime * result + Arrays.hashCode(oldMACKeys);

		result = prime * result + recipientKeyID;

		result = prime * result + senderKeyID;

		return result;

	}

	@Override

	public boolean equals(Object obj) {

		if (this == obj)

			return true;

		if (!super.equals(obj))

			return false;

		if (getClass() != obj.getClass())

			return false;

		DataMessage other = (DataMessage) obj;

		if (!Arrays.equals(ctr, other.ctr))

			return false;

		if (!Arrays.equals(encryptedMessage, other.encryptedMessage))

			return false;

		if (flags != other.flags)

			return false;

		if (!Arrays.equals(mac, other.mac))

			return false;

		if (nextDH == null) {

			if (other.nextDH != null)

				return false;

		} else if (!nextDH.equals(other.nextDH))

			return false;

		if (!Arrays.equals(oldMACKeys, other.oldMACKeys))

			return false;

		if (recipientKeyID != other.recipientKeyID)

			return false;

		if (senderKeyID != other.senderKeyID)

			return false;

		return true;

	}

}