NonEAPInnerAuth.java revision 777f4fc037d3ebd555f10041f8acfb41515b2f4b 
1package com.android.server.wifi.anqp.eap;
2
3import java.net.ProtocolException;
4import java.nio.ByteBuffer;
5
6import static com.android.server.wifi.anqp.Constants.BYTE_MASK;
7
8/**
9 * An EAP authentication parameter, IEEE802.11-2012, table 8-188
10 */
11public class NonEAPInnerAuth implements AuthParam {
12
13    public enum NonEAPType {Reserved, PAP, CHAP, MSCHAP, MSCHAPv2}
14
15    private final NonEAPType mType;
16
17    public NonEAPInnerAuth(ByteBuffer payload) throws ProtocolException {
18        if (payload.remaining() < 2) {
19            throw new ProtocolException("Runt payload: " + payload.remaining());
20        }
21
22        int length = payload.get() & BYTE_MASK;
23        if (length != 1) {
24            throw new ProtocolException("Bad length: " + length);
25        }
26        int typeID = payload.get() & BYTE_MASK;
27        mType = typeID < NonEAPType.values().length ?
28                NonEAPType.values()[typeID] :
29                NonEAPType.Reserved;
30    }
31
32    @Override
33    public EAP.AuthInfoID getAuthInfoID() {
34        return EAP.AuthInfoID.NonEAPInnerAuthType;
35    }
36
37    public NonEAPType getType() {
38        return mType;
39    }
40
41    @Override
42    public int hashCode() {
43        return mType.hashCode();
44    }
45
46    @Override
47    public boolean equals(Object thatObject) {
48        if (thatObject == this) {
49            return true;
50        } else if (thatObject == null || thatObject.getClass() != NonEAPInnerAuth.class) {
51            return false;
52        } else {
53            return ((NonEAPInnerAuth) thatObject).getType() == getType();
54        }
55    }
56
57    @Override
58    public String toString() {
59        return "NonEAPInnerAuth{" +
60                "mType=" + mType +
61                '}';
62    }
63}
64