74 lines
2.7 KiB
Java
74 lines
2.7 KiB
Java
package net.i2p.data.i2np;
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import java.io.IOException;
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import net.i2p.I2PAppContext;
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import net.i2p.data.ByteArray;
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/**
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* Transmitted from the new outbound endpoint to the creator through a
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* reply tunnel
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*/
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public class TunnelBuildReplyMessage extends I2NPMessageImpl {
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protected ByteArray _records[];
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protected int RECORD_COUNT;
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public static final int MAX_RECORD_COUNT = TunnelBuildMessage.MAX_RECORD_COUNT;
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public static final int MESSAGE_TYPE = 22;
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public TunnelBuildReplyMessage(I2PAppContext context) {
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this(context, MAX_RECORD_COUNT);
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}
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/** @since 0.7.12 */
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protected TunnelBuildReplyMessage(I2PAppContext context, int records) {
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super(context);
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if (records > 0) {
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RECORD_COUNT = records;
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_records = new ByteArray[records];
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}
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// else will be initialized by readMessage() in VTBRM
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}
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public void setRecord(int index, ByteArray record) { _records[index] = record; }
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public ByteArray getRecord(int index) { return _records[index]; }
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/** @since 0.7.12 */
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public int getRecordCount() { return RECORD_COUNT; }
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public static final int RECORD_SIZE = TunnelBuildMessage.RECORD_SIZE;
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protected int calculateWrittenLength() { return RECORD_SIZE * RECORD_COUNT; }
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public int getType() { return MESSAGE_TYPE; }
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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)
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throw new I2NPMessageException("Message type is incorrect for this message");
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if (dataSize != calculateWrittenLength())
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throw new I2NPMessageException("Wrong length (expects " + calculateWrittenLength() + ", recv " + dataSize + ")");
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for (int i = 0; i < RECORD_COUNT; i++) {
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int off = offset + (i * RECORD_SIZE);
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int len = RECORD_SIZE;
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byte rec[] = new byte[RECORD_SIZE];
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System.arraycopy(data, off, rec, 0, RECORD_SIZE);
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setRecord(i, new ByteArray(rec));
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//setRecord(i, new ByteArray(data, off, len));
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}
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}
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protected int writeMessageBody(byte[] out, int curIndex) throws I2NPMessageException {
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int remaining = out.length - (curIndex + calculateWrittenLength());
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if (remaining < 0)
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throw new I2NPMessageException("Not large enough (too short by " + remaining + ")");
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for (int i = 0; i < RECORD_COUNT; i++) {
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System.arraycopy(_records[i].getData(), _records[i].getOffset(), out, curIndex, RECORD_SIZE);
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curIndex += RECORD_SIZE;
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}
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return curIndex;
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}
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@Override
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public String toString() {
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return "[TunnelBuildReplyMessage]";
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}
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}
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