1 /*
2 * Copyright 2024 Michael Osipov
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package net.sf.michaelo.tomcat.pac;
17
18 import java.nio.charset.StandardCharsets;
19 import java.util.Objects;
20
21 /**
22 * A class representing the <a href=
23 * "https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-pac/e465cb27-4bc1-4173-8be0-b5fd64dc9ff7">{@code PAC_CLIENT_INFO}</a>
24 * structure from MS-PAC.
25 */
26 public class PacClientInfo {
27
28 private final String name;
29
30 /**
31 * Parses a PAC client info object from a byte array.
32 *
33 * @param infoBytes
34 * PAC client info structure encoded as bytes
35 * @throws NullPointerException
36 * if {@code infoBytes} is null
37 * @throws IllegalArgumentException
38 * if {@code infoBytes} is empty
39 */
40 public PacClientInfo(byte[] infoBytes) {
41 Objects.requireNonNull(infoBytes, "infoBytes cannot be null");
42 if (infoBytes.length == 0)
43 throw new IllegalArgumentException("infoBytes cannot be empty");
44
45 PacDataBuffer buf = new PacDataBuffer(infoBytes);
46
47 // ClientId
48 buf.skip(8);
49 // NameLength
50 int nameLength = buf.getUnsignedShort();
51 // Name
52 byte[] dst = new byte[nameLength];
53 buf.get(dst);
54 this.name = new String(dst, StandardCharsets.UTF_16LE);
55 }
56
57 public String getName() {
58 return name;
59 }
60
61 }