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;
18
19import com.android.internal.annotations.VisibleForTesting;
20
21import java.nio.BufferUnderflowException;
22import java.nio.ByteBuffer;
23import java.util.ArrayList;
24import java.util.Collections;
25import java.util.List;
26
27/**
28 * The Connection Capability vendor specific ANQP Element,
29 * Wi-Fi Alliance Hotspot 2.0 (Release 2) Technical Specification - Version 5.00,
30 * section 4.5
31 *
32 * Format:
33 * | ProtoPort Tuple #1 (optiional) | ....
34 *                4
35 */
36public class HSConnectionCapabilityElement extends ANQPElement {
37    private final List<ProtocolPortTuple> mStatusList;
38
39    @VisibleForTesting
40    public HSConnectionCapabilityElement(List<ProtocolPortTuple> statusList) {
41        super(Constants.ANQPElementType.HSConnCapability);
42        mStatusList = statusList;
43    }
44
45    /**
46     * Parse a HSConnectionCapabilityElement from the given buffer.
47     *
48     * @param payload The byte buffer to read from
49     * @return {@link HSConnectionCapabilityElement}
50     * @throws BufferUnderflowException
51     */
52    public static HSConnectionCapabilityElement parse(ByteBuffer payload) {
53        List<ProtocolPortTuple> statusList = new ArrayList<>();
54        while (payload.hasRemaining()) {
55            statusList.add(ProtocolPortTuple.parse(payload));
56        }
57        return new HSConnectionCapabilityElement(statusList);
58    }
59
60    public List<ProtocolPortTuple> getStatusList() {
61        return Collections.unmodifiableList(mStatusList);
62    }
63
64    @Override
65    public boolean equals(Object thatObject) {
66        if (this == thatObject) {
67            return true;
68        }
69        if (!(thatObject instanceof HSConnectionCapabilityElement)) {
70            return false;
71        }
72        HSConnectionCapabilityElement that = (HSConnectionCapabilityElement) thatObject;
73        return mStatusList.equals(that.mStatusList);
74    }
75
76    @Override
77    public int hashCode() {
78        return mStatusList.hashCode();
79    }
80
81    @Override
82    public String toString() {
83        return "HSConnectionCapability{" +
84                "mStatusList=" + mStatusList +
85                '}';
86    }
87}
88