1 package org.metricshub.ipmi.core.coding.protocol.decoder;
2
3 /*-
4 * ╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲
5 * IPMI Java Client
6 * ჻჻჻჻჻჻
7 * Copyright 2023 Verax Systems, MetricsHub
8 * ჻჻჻჻჻჻
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation, either version 3 of the
12 * License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Lesser Public License for more details.
18 *
19 * You should have received a copy of the GNU General Lesser Public
20 * License along with this program. If not, see
21 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
22 * ╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱
23 */
24
25 import org.metricshub.ipmi.core.coding.payload.IpmiPayload;
26 import org.metricshub.ipmi.core.coding.payload.PlainMessage;
27 import org.metricshub.ipmi.core.coding.protocol.PayloadType;
28 import org.metricshub.ipmi.core.coding.security.CipherSuite;
29 import org.metricshub.ipmi.core.coding.security.ConfidentialityAlgorithm;
30
31 /**
32 * Decodes IPMI session header and retrieves encrypted payload. The payload must
33 * not be encapsulated in IPMI LAN message. USed for Open session and RAKP
34 * messages.
35 */
36 public class PlainCommandv20Decoder extends Protocolv20Decoder {
37
38 public PlainCommandv20Decoder(CipherSuite cipherSuite) {
39 super(cipherSuite);
40 }
41
42 /**
43 *
44 * @return Payload decoded into {@link PlainMessage}.
45 */
46 @Override
47 protected IpmiPayload decodePayload(byte[] rawData, int offset, int length,
48 ConfidentialityAlgorithm confidentialityAlgorithm, PayloadType payloadType) {
49 byte[] payload = new byte[length];
50
51 System.arraycopy(rawData, offset, payload, 0, length);
52
53 return new PlainMessage(confidentialityAlgorithm.decrypt(payload));
54 }
55 }