| /** |
| * Copyright (c) 2015, 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 android.security.keymaster; |
| |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.os.ParcelFormatException; |
| |
| /** |
| * Base class for the Java side of a Keymaster tagged argument. |
| * <p> |
| * Serialization code for this and subclasses must be kept in sync with system/security/keystore |
| * and with hardware/libhardware/include/hardware/keymaster_defs.h |
| * @hide |
| */ |
| abstract class KeymasterArgument implements Parcelable { |
| public final int tag; |
| |
| public static final Parcelable.Creator<KeymasterArgument> CREATOR = new |
| Parcelable.Creator<KeymasterArgument>() { |
| public KeymasterArgument createFromParcel(Parcel in) { |
| final int pos = in.dataPosition(); |
| final int tag = in.readInt(); |
| switch (KeymasterDefs.getTagType(tag)) { |
| case KeymasterDefs.KM_ENUM: |
| case KeymasterDefs.KM_ENUM_REP: |
| case KeymasterDefs.KM_INT: |
| case KeymasterDefs.KM_INT_REP: |
| return new KeymasterIntArgument(tag, in); |
| case KeymasterDefs.KM_LONG: |
| return new KeymasterLongArgument(tag, in); |
| case KeymasterDefs.KM_DATE: |
| return new KeymasterDateArgument(tag, in); |
| case KeymasterDefs.KM_BYTES: |
| case KeymasterDefs.KM_BIGNUM: |
| return new KeymasterBlobArgument(tag, in); |
| case KeymasterDefs.KM_BOOL: |
| return new KeymasterBooleanArgument(tag, in); |
| default: |
| throw new ParcelFormatException("Bad tag: " + tag + " at " + pos); |
| } |
| } |
| public KeymasterArgument[] newArray(int size) { |
| return new KeymasterArgument[size]; |
| } |
| }; |
| |
| protected KeymasterArgument(int tag) { |
| this.tag = tag; |
| } |
| |
| /** |
| * Writes the value of this argument, if any, to the provided parcel. |
| */ |
| public abstract void writeValue(Parcel out); |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel out, int flags) { |
| out.writeInt(tag); |
| writeValue(out); |
| } |
| } |