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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.content.pm;
import android.annotation.NonNull;
import android.annotation.SystemApi;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Parcel;
import android.os.Parcelable;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.List;
/**
* Information about an ephemeral application.
* @hide
*/
@SystemApi
public final class EphemeralResolveInfo implements Parcelable {
/** Algorithm that will be used to generate the domain digest */
public static final String SHA_ALGORITHM = "SHA-256";
/** Full digest of the domain hash */
private final byte[] mDigestBytes;
/** The first 4 bytes of the domain hash */
private final int mDigestPrefix;
private final String mPackageName;
/** The filters used to match domain */
private final List<IntentFilter> mFilters = new ArrayList<IntentFilter>();
public EphemeralResolveInfo(@NonNull Uri uri, @NonNull String packageName,
@NonNull List<IntentFilter> filters) {
// validate arguments
if (uri == null
|| packageName == null
|| filters == null
|| filters.size() == 0) {
throw new IllegalArgumentException();
}
mDigestBytes = generateDigest(uri);
mDigestPrefix =
mDigestBytes[0] << 24
| mDigestBytes[1] << 16
| mDigestBytes[2] << 8
| mDigestBytes[3] << 0;
mFilters.addAll(filters);
mPackageName = packageName;
}
EphemeralResolveInfo(Parcel in) {
mDigestBytes = in.createByteArray();
mDigestPrefix = in.readInt();
mPackageName = in.readString();
in.readList(mFilters, null /*loader*/);
}
public byte[] getDigestBytes() {
return mDigestBytes;
}
public int getDigestPrefix() {
return mDigestPrefix;
}
public String getPackageName() {
return mPackageName;
}
public List<IntentFilter> getFilters() {
return mFilters;
}
private static byte[] generateDigest(Uri uri) {
try {
final MessageDigest digest = MessageDigest.getInstance(SHA_ALGORITHM);
final byte[] hostBytes = uri.getHost().getBytes();
return digest.digest(hostBytes);
} catch (NoSuchAlgorithmException e) {
throw new IllegalStateException("could not find digest algorithm");
}
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel out, int flags) {
out.writeByteArray(mDigestBytes);
out.writeInt(mDigestPrefix);
out.writeString(mPackageName);
out.writeList(mFilters);
}
public static final Parcelable.Creator<EphemeralResolveInfo> CREATOR
= new Parcelable.Creator<EphemeralResolveInfo>() {
public EphemeralResolveInfo createFromParcel(Parcel in) {
return new EphemeralResolveInfo(in);
}
public EphemeralResolveInfo[] newArray(int size) {
return new EphemeralResolveInfo[size];
}
};
/** @hide */
public static final class EphemeralResolveIntentInfo extends IntentFilter {
private final EphemeralResolveInfo mResolveInfo;
public EphemeralResolveIntentInfo(@NonNull IntentFilter orig,
@NonNull EphemeralResolveInfo resolveInfo) {
super(orig);
this.mResolveInfo = resolveInfo;
}
public EphemeralResolveInfo getEphemeralResolveInfo() {
return mResolveInfo;
}
}
}
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