1/*
2 * Copyright (C) 2016 The Android Open Source Project
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
17package com.android.server.wifi.hotspot2.anqp.eap;
18
19import com.android.internal.annotations.VisibleForTesting;
20
21import java.nio.BufferUnderflowException;
22import java.nio.ByteBuffer;
23import java.util.Arrays;
24
25/**
26 * The Vendor Specific authentication parameter, IEEE802.11-2012, table 8-188.
27 *
28 * Format:
29 * | Data |
30 * variable
31 */
32public class VendorSpecificAuth extends AuthParam {
33    private final byte[] mData;
34
35    @VisibleForTesting
36    public VendorSpecificAuth(byte[] data) {
37        super(AuthParam.PARAM_TYPE_VENDOR_SPECIFIC);
38        mData = data;
39    }
40
41    /**
42     * Parse a VendorSpecificAuth from the given buffer.
43     *
44     * @param payload The byte buffer to read from
45     * @param length The length of the data
46     * @return {@link VendorSpecificAuth}
47     * @throws BufferUnderflowException
48     */
49    public static VendorSpecificAuth parse(ByteBuffer payload, int length) {
50        byte[] data = new byte[length];
51        payload.get(data);
52        return new VendorSpecificAuth(data);
53    }
54
55    public byte[] getData() {
56        return mData;
57    }
58
59    @Override
60    public boolean equals(Object thatObject) {
61        if (thatObject == this) {
62            return true;
63        }
64        if (!(thatObject instanceof VendorSpecificAuth)) {
65            return false;
66        }
67        VendorSpecificAuth that = (VendorSpecificAuth) thatObject;
68        return Arrays.equals(mData, that.mData);
69    }
70
71    @Override
72    public int hashCode() {
73        return Arrays.hashCode(mData);
74    }
75
76    @Override
77    public String toString() {
78        return "VendorSpecificAuth{mData=" + Arrays.toString(mData) + "}";
79    }
80}
81