1 package com.android.anqp; 2 3 import java.net.ProtocolException; 4 import java.nio.ByteBuffer; 5 import java.nio.charset.StandardCharsets; 6 7 import static com.android.anqp.Constants.BYTE_MASK; 8 import static com.android.anqp.Constants.SHORT_MASK; 9 10 /** 11 * The Icon Binary File vendor specific ANQP Element, 12 * Wi-Fi Alliance Hotspot 2.0 (Release 2) Technical Specification - Version 5.00, 13 * section 4.11 14 */ 15 public class HSIconFileElement extends ANQPElement { 16 17 public enum StatusCode {Success, FileNotFound, Unspecified} 18 19 private final StatusCode mStatusCode; 20 private final String mType; 21 private final byte[] mIconData; 22 HSIconFileElement(Constants.ANQPElementType infoID, ByteBuffer payload)23 public HSIconFileElement(Constants.ANQPElementType infoID, ByteBuffer payload) 24 throws ProtocolException { 25 super(infoID); 26 27 if (payload.remaining() < 4) { 28 throw new ProtocolException("Truncated icon file: " + payload.remaining()); 29 } 30 31 int statusID = payload.get() & BYTE_MASK; 32 mStatusCode = statusID < StatusCode.values().length ? StatusCode.values()[statusID] : null; 33 mType = Constants.getPrefixedString(payload, 1, StandardCharsets.US_ASCII); 34 35 int dataLength = payload.getShort() & SHORT_MASK; 36 mIconData = new byte[dataLength]; 37 payload.get(mIconData); 38 } 39 40 public StatusCode getStatusCode() { 41 return mStatusCode; 42 } 43 44 public String getType() { 45 return mType; 46 } 47 48 public byte[] getIconData() { 49 return mIconData; 50 } 51 52 @Override 53 public String toString() { 54 return "HSIconFile{" + 55 "statusCode=" + mStatusCode + 56 ", type='" + mType + '\'' + 57 ", iconData=" + mIconData.length + " bytes }"; 58 } 59 } 60