| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.wifi.hotspot2.anqp.eap; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.server.wifi.ByteBufferReader; |
| |
| import java.net.ProtocolException; |
| import java.nio.BufferUnderflowException; |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| |
| /** |
| * The Expanded EAP Method authentication parameter, IEEE802.11-2012, table 8-189. |
| * Used by both Expanded EAP Method and Expanded Inner EAP Method. |
| * |
| * Format: |
| * | Vendor ID | Vendor Type | |
| * 3 4 |
| */ |
| public class ExpandedEAPMethod extends AuthParam { |
| public static final int EXPECTED_LENGTH_VALUE = 7; |
| |
| private final int mVendorID; |
| private final long mVendorType; |
| |
| @VisibleForTesting |
| public ExpandedEAPMethod(int authType, int vendorID, long vendorType) { |
| super(authType); |
| mVendorID = vendorID; |
| mVendorType = vendorType; |
| } |
| |
| /** |
| * Parse a ExpandedEAPMethod from the given buffer. |
| * |
| * @param payload The byte buffer to read from |
| * @param length The length of the data |
| * @param inner Flag indicating if this is for an Inner EAP method |
| * @return {@link ExpandedEAPMethod} |
| * @throws ProtocolException |
| * @throws BufferUnderflowException |
| */ |
| public static ExpandedEAPMethod parse(ByteBuffer payload, int length, boolean inner) |
| throws ProtocolException { |
| if (length != EXPECTED_LENGTH_VALUE) { |
| throw new ProtocolException("Invalid length value: " + length); |
| } |
| |
| // Vendor ID and Vendor Type are expressed in big-endian byte order according to |
| // the spec. |
| int vendorID = (int) ByteBufferReader.readInteger(payload, ByteOrder.BIG_ENDIAN, 3) |
| & 0xFFFFFF; |
| long vendorType = ByteBufferReader.readInteger(payload, ByteOrder.BIG_ENDIAN, 4) |
| & 0xFFFFFFFF; |
| |
| int authType = inner ? AuthParam.PARAM_TYPE_EXPANDED_INNER_EAP_METHOD |
| : AuthParam.PARAM_TYPE_EXPANDED_EAP_METHOD; |
| return new ExpandedEAPMethod(authType, vendorID, vendorType); |
| } |
| |
| public int getVendorID() { |
| return mVendorID; |
| } |
| |
| public long getVendorType() { |
| return mVendorType; |
| } |
| |
| @Override |
| public boolean equals(Object thatObject) { |
| if (thatObject == this) { |
| return true; |
| } |
| if (!(thatObject instanceof ExpandedEAPMethod)) { |
| return false; |
| } |
| ExpandedEAPMethod that = (ExpandedEAPMethod) thatObject; |
| return mVendorID == that.mVendorID && mVendorType == that.mVendorType; |
| } |
| |
| @Override |
| public int hashCode() { |
| return (mVendorID) * 31 + (int) mVendorType; |
| } |
| |
| @Override |
| public String toString() { |
| return "ExpandedEAPMethod{mVendorID=" + mVendorID + " mVendorType=" + mVendorType + "}"; |
| } |
| } |