1 package com.android.server.wifi.anqp; 2 3 import java.net.ProtocolException; 4 import java.nio.ByteBuffer; 5 import java.util.ArrayList; 6 import java.util.Collections; 7 import java.util.List; 8 9 import static com.android.server.wifi.anqp.Constants.BYTE_MASK; 10 11 12 /** 13 * The 3GPP Cellular Network ANQP Element, IEEE802.11-2012 section 8.4.4.11 14 */ 15 public class ThreeGPPNetworkElement extends ANQPElement { 16 private final int mUserData; 17 private final List<CellularNetwork> mPlmns; 18 19 public ThreeGPPNetworkElement(Constants.ANQPElementType infoID, ByteBuffer payload) 20 throws ProtocolException { 21 super(infoID); 22 23 mPlmns = new ArrayList<CellularNetwork>(); 24 mUserData = payload.get() & BYTE_MASK; 25 int length = payload.get() & BYTE_MASK; 26 if (length > payload.remaining()) { 27 throw new ProtocolException("Runt payload"); 28 } 29 30 while (payload.hasRemaining()) { 31 CellularNetwork network = CellularNetwork.buildCellularNetwork(payload); 32 if (network != null) { 33 mPlmns.add(network); 34 } 35 } 36 } 37 38 public int getUserData() { 39 return mUserData; 40 } 41 42 public List<CellularNetwork> getPlmns() { 43 return Collections.unmodifiableList(mPlmns); 44 } 45 46 @Override 47 public String toString() { 48 return "ThreeGPPNetwork{" + 49 "mUserData=" + mUserData + 50 ", mPlmns=" + mPlmns + 51 '}'; 52 } 53 } 54
