86 lines
3.1 KiB
Java
86 lines
3.1 KiB
Java
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/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.security.keymaster;
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import android.os.Parcel;
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import android.os.Parcelable;
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import android.os.ParcelFormatException;
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/**
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* Base class for the Java side of a Keymaster tagged argument.
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* <p>
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* Serialization code for this and subclasses must be kept in sync with system/security/keystore
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* and with hardware/libhardware/include/hardware/keymaster_defs.h
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* @hide
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*/
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abstract class KeymasterArgument implements Parcelable {
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public final int tag;
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public static final @android.annotation.NonNull Parcelable.Creator<KeymasterArgument> CREATOR = new
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Parcelable.Creator<KeymasterArgument>() {
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@Override
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public KeymasterArgument createFromParcel(Parcel in) {
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final int pos = in.dataPosition();
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final int tag = in.readInt();
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switch (KeymasterDefs.getTagType(tag)) {
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case KeymasterDefs.KM_ENUM:
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case KeymasterDefs.KM_ENUM_REP:
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case KeymasterDefs.KM_UINT:
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case KeymasterDefs.KM_UINT_REP:
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return new KeymasterIntArgument(tag, in);
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case KeymasterDefs.KM_ULONG:
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case KeymasterDefs.KM_ULONG_REP:
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return new KeymasterLongArgument(tag, in);
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case KeymasterDefs.KM_DATE:
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return new KeymasterDateArgument(tag, in);
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case KeymasterDefs.KM_BYTES:
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case KeymasterDefs.KM_BIGNUM:
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return new KeymasterBlobArgument(tag, in);
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case KeymasterDefs.KM_BOOL:
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return new KeymasterBooleanArgument(tag, in);
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default:
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throw new ParcelFormatException("Bad tag: " + tag + " at " + pos);
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}
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}
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@Override
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public KeymasterArgument[] newArray(int size) {
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return new KeymasterArgument[size];
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}
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};
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protected KeymasterArgument(int tag) {
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this.tag = tag;
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}
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/**
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* Writes the value of this argument, if any, to the provided parcel.
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*/
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public abstract void writeValue(Parcel out);
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@Override
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public int describeContents() {
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return 0;
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}
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@Override
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public void writeToParcel(Parcel out, int flags) {
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out.writeInt(tag);
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writeValue(out);
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}
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}
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