package com.android.server.wifi.anqp; import java.net.ProtocolException; import java.nio.ByteBuffer; import java.nio.charset.StandardCharsets; import static com.android.server.wifi.anqp.Constants.BYTE_MASK; import static com.android.server.wifi.anqp.Constants.SHORT_MASK; /** * The Icon Binary File vendor specific ANQP Element, * Wi-Fi Alliance Hotspot 2.0 (Release 2) Technical Specification - Version 5.00, * section 4.11 */ public class HSIconFileElement extends ANQPElement { public enum StatusCode {Success, FileNotFound, Unspecified} private final StatusCode mStatusCode; private final String mType; private final byte[] mIconData; public HSIconFileElement(Constants.ANQPElementType infoID, ByteBuffer payload) throws ProtocolException { super(infoID); if (payload.remaining() < 4) { throw new ProtocolException("Truncated icon file: " + payload.remaining()); } int statusID = payload.get() & BYTE_MASK; mStatusCode = statusID < StatusCode.values().length ? StatusCode.values()[statusID] : null; mType = Constants.getPrefixedString(payload, 1, StandardCharsets.US_ASCII); int dataLength = payload.getShort() & SHORT_MASK; mIconData = new byte[dataLength]; payload.get(mIconData); } public StatusCode getStatusCode() { return mStatusCode; } public String getType() { return mType; } public byte[] getIconData() { return mIconData; } @Override public String toString() { return "HSIconFile{" + "mStatusCode=" + mStatusCode + ", mType='" + mType + '\'' + ", mIconData=" + mIconData.length + " bytes }"; } }