/*
 * Copyright (C) 2017 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.
 */
/*
 * Copyright (c) 2017, The Linux Foundation.
 */

/*
 * Copyright 2010 Giesecke & Devrient GmbH.
 *
 * 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.se.security;

/** Represents the Response received from the Secure Element */
public class ResponseApdu {

    protected int mSw1 = 0x00;
    protected int mSw2 = 0x00;
    protected byte[] mData = new byte[0];

    public ResponseApdu(byte[] respApdu) {
        if (respApdu.length < 2) {
            return;
        }
        if (respApdu.length > 2) {
            mData = new byte[respApdu.length - 2];
            System.arraycopy(respApdu, 0, mData, 0, respApdu.length - 2);
        }
        mSw1 = 0x00FF & respApdu[respApdu.length - 2];
        mSw2 = 0x00FF & respApdu[respApdu.length - 1];
    }

    public int getSW1() {
        return mSw1;
    }

    public int getSW2() {
        return mSw2;
    }

    public int getSW1SW2() {
        return (mSw1 << 8) | mSw2;
    }

    public byte[] getData() {
        return mData;
    }

    /** Returns true if the Status Words are equal */
    public boolean isStatus(int sw1sw2) {
        return (getSW1SW2() == sw1sw2);
    }
}