package com.android.server.wifi.anqp; import java.net.ProtocolException; import java.nio.ByteBuffer; import java.util.ArrayList; import java.util.Collections; import java.util.List; /** * The Connection Capability vendor specific ANQP Element, * Wi-Fi Alliance Hotspot 2.0 (Release 2) Technical Specification - Version 5.00, * section 4.5 */ public class HSConnectionCapabilityElement extends ANQPElement { public enum ProtoStatus {Closed, Open, Unknown} private final List mStatusList; public static class ProtocolTuple { private final int mProtocol; private final int mPort; private final ProtoStatus mStatus; private ProtocolTuple(ByteBuffer payload) throws ProtocolException { if (payload.remaining() < 4) { throw new ProtocolException("Runt protocol tuple: " + payload.remaining()); } mProtocol = payload.get() & Constants.BYTE_MASK; mPort = payload.getShort() & Constants.SHORT_MASK; int statusNumber = payload.get() & Constants.BYTE_MASK; mStatus = statusNumber < ProtoStatus.values().length ? ProtoStatus.values()[statusNumber] : null; } public int getProtocol() { return mProtocol; } public int getPort() { return mPort; } public ProtoStatus getStatus() { return mStatus; } @Override public String toString() { return "ProtocolTuple{" + "mProtocol=" + mProtocol + ", mPort=" + mPort + ", mStatus=" + mStatus + '}'; } } public HSConnectionCapabilityElement(Constants.ANQPElementType infoID, ByteBuffer payload) throws ProtocolException { super(infoID); mStatusList = new ArrayList<>(); while (payload.hasRemaining()) { mStatusList.add(new ProtocolTuple(payload)); } } public List getStatusList() { return Collections.unmodifiableList(mStatusList); } @Override public String toString() { return "HSConnectionCapability{" + "mStatusList=" + mStatusList + '}'; } }