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/*
* 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.annotation.UnsupportedAppUsage;
import android.os.Parcel;
import android.os.Parcelable;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
/**
* @hide
*/
public class KeyCharacteristics implements Parcelable {
public KeymasterArguments swEnforced;
public KeymasterArguments hwEnforced;
public static final @android.annotation.NonNull Parcelable.Creator<KeyCharacteristics> CREATOR =
new Parcelable.Creator<KeyCharacteristics>() {
@Override
public KeyCharacteristics createFromParcel(Parcel in) {
return new KeyCharacteristics(in);
}
@Override
public KeyCharacteristics[] newArray(int length) {
return new KeyCharacteristics[length];
}
};
@UnsupportedAppUsage
public KeyCharacteristics() {}
protected KeyCharacteristics(Parcel in) {
readFromParcel(in);
}
/**
* Makes a shallow copy of other by copying the other's references to the KeymasterArguments
*/
public void shallowCopyFrom(KeyCharacteristics other) {
this.swEnforced = other.swEnforced;
this.hwEnforced = other.hwEnforced;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel out, int flags) {
swEnforced.writeToParcel(out, flags);
hwEnforced.writeToParcel(out, flags);
}
@UnsupportedAppUsage
public void readFromParcel(Parcel in) {
swEnforced = KeymasterArguments.CREATOR.createFromParcel(in);
hwEnforced = KeymasterArguments.CREATOR.createFromParcel(in);
}
/**
* Returns the value of the specified enum tag or {@code defaultValue} if the tag is not
* present.
*
* @throws IllegalArgumentException if {@code tag} is not an enum tag.
*/
public Integer getEnum(int tag) {
if (hwEnforced.containsTag(tag)) {
return hwEnforced.getEnum(tag, -1);
} else if (swEnforced.containsTag(tag)) {
return swEnforced.getEnum(tag, -1);
} else {
return null;
}
}
/**
* Returns all values of the specified repeating enum tag.
*
* throws IllegalArgumentException if {@code tag} is not a repeating enum tag.
*/
public List<Integer> getEnums(int tag) {
List<Integer> result = new ArrayList<Integer>();
result.addAll(hwEnforced.getEnums(tag));
result.addAll(swEnforced.getEnums(tag));
return result;
}
/**
* Returns the value of the specified unsigned 32-bit int tag or {@code defaultValue} if the tag
* is not present.
*
* @throws IllegalArgumentException if {@code tag} is not an unsigned 32-bit int tag.
*/
public long getUnsignedInt(int tag, long defaultValue) {
if (hwEnforced.containsTag(tag)) {
return hwEnforced.getUnsignedInt(tag, defaultValue);
} else {
return swEnforced.getUnsignedInt(tag, defaultValue);
}
}
/**
* Returns all values of the specified repeating unsigned 64-bit long tag.
*
* @throws IllegalArgumentException if {@code tag} is not a repeating unsigned 64-bit long tag.
*/
public List<BigInteger> getUnsignedLongs(int tag) {
List<BigInteger> result = new ArrayList<BigInteger>();
result.addAll(hwEnforced.getUnsignedLongs(tag));
result.addAll(swEnforced.getUnsignedLongs(tag));
return result;
}
/**
* Returns the value of the specified date tag or {@code null} if the tag is not present.
*
* @throws IllegalArgumentException if {@code tag} is not a date tag or if the tag's value
* represents a time instant which is after {@code 2^63 - 1} milliseconds since Unix
* epoch.
*/
public Date getDate(int tag) {
Date result = swEnforced.getDate(tag, null);
if (result != null) {
return result;
}
return hwEnforced.getDate(tag, null);
}
/**
* Returns {@code true} if the provided boolean tag is present, {@code false} if absent.
*
* @throws IllegalArgumentException if {@code tag} is not a boolean tag.
*/
public boolean getBoolean(int tag) {
if (hwEnforced.containsTag(tag)) {
return hwEnforced.getBoolean(tag);
} else {
return swEnforced.getBoolean(tag);
}
}
}
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