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      1 package com.android.anqp.eap;
      2 
      3 import java.net.ProtocolException;
      4 import java.nio.ByteBuffer;
      5 import java.nio.ByteOrder;
      6 
      7 import static com.android.anqp.Constants.BYTE_MASK;
      8 import static com.android.anqp.Constants.INT_MASK;
      9 import static com.android.anqp.Constants.SHORT_MASK;
     10 
     11 /**
     12  * An EAP authentication parameter, IEEE802.11-2012, table 8-188
     13  */
     14 public class ExpandedEAPMethod implements AuthParam {
     15 
     16     private final EAP.AuthInfoID mAuthInfoID;
     17     private final int mVendorID;
     18     private final long mVendorType;
     19 
     20     public ExpandedEAPMethod(EAP.AuthInfoID authInfoID, int length, ByteBuffer payload)
     21             throws ProtocolException {
     22         if (length != 7) {
     23             throw new ProtocolException("Bad length: " + payload.remaining());
     24         }
     25 
     26         mAuthInfoID = authInfoID;
     27 
     28         ByteBuffer vndBuffer = payload.duplicate().order(ByteOrder.BIG_ENDIAN);
     29 
     30         int id = vndBuffer.getShort() & SHORT_MASK;
     31         id = (id << Byte.SIZE) | (vndBuffer.get() & BYTE_MASK);
     32         mVendorID = id;
     33         mVendorType = vndBuffer.getInt() & INT_MASK;
     34 
     35         payload.position(payload.position()+7);
     36     }
     37 
     38     public ExpandedEAPMethod(EAP.AuthInfoID authInfoID, int vendorID, long vendorType) {
     39         mAuthInfoID = authInfoID;
     40         mVendorID = vendorID;
     41         mVendorType = vendorType;
     42     }
     43 
     44     @Override
     45     public EAP.AuthInfoID getAuthInfoID() {
     46         return mAuthInfoID;
     47     }
     48 
     49     @Override
     50     public int hashCode() {
     51         return (mAuthInfoID.hashCode() * 31 + mVendorID) * 31 + (int) mVendorType;
     52     }
     53 
     54     @Override
     55     public boolean equals(Object thatObject) {
     56         if (thatObject == this) {
     57             return true;
     58         } else if (thatObject == null || thatObject.getClass() != ExpandedEAPMethod.class) {
     59             return false;
     60         } else {
     61             ExpandedEAPMethod that = (ExpandedEAPMethod) thatObject;
     62             return that.getVendorID() == getVendorID() && that.getVendorType() == getVendorType();
     63         }
     64     }
     65 
     66     public int getVendorID() {
     67         return mVendorID;
     68     }
     69 
     70     public long getVendorType() {
     71         return mVendorType;
     72     }
     73 
     74     @Override
     75     public String toString() {
     76         return "Auth method " + mAuthInfoID + ", id " + mVendorID + ", type " + mVendorType + "\n";
     77     }
     78 }
     79