843d5b625a
* Further preparation for removing I2CP crypto
* Added some validation to the DH key agreement (thanks $anon)
* Validate tunnel data message expirations (though not really a problem,
since tunnels expire)
* Minor PRNG threading cleanup
90 lines
3.2 KiB
Java
90 lines
3.2 KiB
Java
package net.i2p.data.i2np;
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/*
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* free (adj.): unencumbered; not under the control of others
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* Written by jrandom in 2003 and released into the public domain
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* with no warranty of any kind, either expressed or implied.
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* It probably won't make your computer catch on fire, or eat
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* your children, but it might. Use at your own risk.
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*
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*/
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import java.io.IOException;
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import net.i2p.I2PAppContext;
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import net.i2p.data.DataHelper;
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import net.i2p.util.Log;
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/**
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* Defines the message sent back in reply to a message when requested, containing
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* the private ack id.
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*
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* @author jrandom
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*/
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public class DeliveryStatusMessage extends I2NPMessageImpl {
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private final static Log _log = new Log(DeliveryStatusMessage.class);
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public final static int MESSAGE_TYPE = 10;
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private long _id;
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private long _arrival;
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public DeliveryStatusMessage(I2PAppContext context) {
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super(context);
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setMessageId(-1);
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setArrival(-1);
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}
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public long getMessageId() { return _id; }
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public void setMessageId(long id) { _id = id; }
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public long getArrival() { return _arrival; }
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public void setArrival(long arrival) { _arrival = arrival; }
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public void readMessage(byte data[], int offset, int dataSize, int type) throws I2NPMessageException, IOException {
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if (type != MESSAGE_TYPE) throw new I2NPMessageException("Message type is incorrect for this message");
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int curIndex = offset;
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_id = DataHelper.fromLong(data, curIndex, 4);
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curIndex += 4;
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_arrival = DataHelper.fromLong(data, curIndex, DataHelper.DATE_LENGTH);
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}
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/** calculate the message body's length (not including the header and footer */
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protected int calculateWrittenLength() {
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return 4 + DataHelper.DATE_LENGTH; // id + arrival
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}
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/** write the message body to the output array, starting at the given index */
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protected int writeMessageBody(byte out[], int curIndex) throws I2NPMessageException {
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if ( (_id < 0) || (_arrival <= 0) ) throw new I2NPMessageException("Not enough data to write out");
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DataHelper.toLong(out, curIndex, 4, _id);
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curIndex += 4;
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DataHelper.toLong(out, curIndex, DataHelper.DATE_LENGTH, _arrival);
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curIndex += DataHelper.DATE_LENGTH;
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return curIndex;
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}
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public int getType() { return MESSAGE_TYPE; }
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public int hashCode() {
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return (int)getMessageId() + (int)getArrival();
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}
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public boolean equals(Object object) {
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if ( (object != null) && (object instanceof DeliveryStatusMessage) ) {
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DeliveryStatusMessage msg = (DeliveryStatusMessage)object;
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return DataHelper.eq(getMessageId(),msg.getMessageId()) &&
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DataHelper.eq(getArrival(),msg.getArrival());
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} else {
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return false;
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}
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}
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public String toString() {
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StringBuffer buf = new StringBuffer();
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buf.append("[DeliveryStatusMessage: ");
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buf.append("\n\tMessage ID: ").append(getMessageId());
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buf.append("\n\tArrival: ").append(_context.clock().now() - _arrival);
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buf.append("ms in the past");
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buf.append("]");
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return buf.toString();
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}
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}
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