[go: nahoru, domu]
1package com.android.server.wifi.anqp;
2
3import java.net.ProtocolException;
4import java.nio.ByteBuffer;
5import java.util.Arrays;
6
7/**
8 * The ANQP Capability List element, 802.11-2012 section 8.4.4.3
9 */
10public class CapabilityListElement extends ANQPElement {
11    private final Constants.ANQPElementType[] mCapabilities;
12
13    public CapabilityListElement(Constants.ANQPElementType infoID, ByteBuffer payload)
14            throws ProtocolException {
15        super(infoID);
16        if ((payload.remaining() & 1) == 1)
17            throw new ProtocolException("Odd length");
18        mCapabilities = new Constants.ANQPElementType[payload.remaining() / Constants.BYTES_IN_SHORT];
19
20        int index = 0;
21        while (payload.hasRemaining()) {
22            int capID = payload.getShort() & Constants.SHORT_MASK;
23            Constants.ANQPElementType capability = Constants.mapANQPElement(capID);
24            if (capability == null)
25                throw new ProtocolException("Unknown capability: " + capID);
26            mCapabilities[index++] = capability;
27        }
28    }
29
30    public Constants.ANQPElementType[] getCapabilities() {
31        return mCapabilities;
32    }
33
34    @Override
35    public String toString() {
36        return "CapabilityList{" +
37                "mCapabilities=" + Arrays.toString(mCapabilities) +
38                '}';
39    }
40}
41