package com.android.server.wifi.anqp; import com.android.server.wifi.SIMAccessor; import com.android.server.wifi.hotspot2.AuthMatch; import com.android.server.wifi.hotspot2.Utils; import com.android.server.wifi.hotspot2.pps.Credential; import com.android.server.wifi.hotspot2.pps.HomeSP; import java.net.ProtocolException; import java.nio.ByteBuffer; import java.util.ArrayList; import java.util.Collections; import java.util.List; import static com.android.server.wifi.anqp.Constants.BYTES_IN_SHORT; import static com.android.server.wifi.anqp.Constants.SHORT_MASK; /** * The NAI Realm ANQP Element, IEEE802.11-2012 section 8.4.4.10 */ public class NAIRealmElement extends ANQPElement { private final List mRealmData; public NAIRealmElement(Constants.ANQPElementType infoID, ByteBuffer payload) throws ProtocolException { super(infoID); if (!payload.hasRemaining()) { mRealmData = Collections.emptyList(); return; } if (payload.remaining() < BYTES_IN_SHORT) { throw new ProtocolException("Runt NAI Realm: " + payload.remaining()); } int count = payload.getShort() & SHORT_MASK; mRealmData = new ArrayList<>(count); while (count > 0) { mRealmData.add(new NAIRealmData(payload)); count--; } } public List getRealmData() { return Collections.unmodifiableList(mRealmData); } public int match(Credential credential) { if (mRealmData.isEmpty()) return AuthMatch.Indeterminate; List credLabels = Utils.splitDomain(credential.getRealm()); int best = AuthMatch.None; for (NAIRealmData realmData : mRealmData) { int match = realmData.match(credLabels, credential); if (match > best) { best = match; if (best == AuthMatch.Exact) { return best; } } } return best; } @Override public String toString() { StringBuilder sb = new StringBuilder(); sb.append("NAI Realm:\n"); for (NAIRealmData data : mRealmData) { sb.append(data); } return sb.toString(); } }