| /* |
| * Copyright (C) 2021 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.net.vcn.persistablebundleutils; |
| |
| import static com.android.internal.annotations.VisibleForTesting.Visibility; |
| |
| import android.annotation.NonNull; |
| import android.net.ipsec.ike.IkeSaProposal; |
| import android.os.PersistableBundle; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.server.vcn.util.PersistableBundleUtils; |
| |
| import java.util.List; |
| import java.util.Objects; |
| |
| /** |
| * Provides utility methods to convert IkeSaProposal to/from PersistableBundle. |
| * |
| * @hide |
| */ |
| @VisibleForTesting(visibility = Visibility.PRIVATE) |
| public final class IkeSaProposalUtils extends SaProposalUtilsBase { |
| private static final String PRF_KEY = "PRF_KEY"; |
| |
| /** Serializes an IkeSaProposal to a PersistableBundle. */ |
| @NonNull |
| public static PersistableBundle toPersistableBundle(IkeSaProposal proposal) { |
| final PersistableBundle result = SaProposalUtilsBase.toPersistableBundle(proposal); |
| |
| final int[] prfArray = |
| proposal.getPseudorandomFunctions().stream().mapToInt(i -> i).toArray(); |
| result.putIntArray(PRF_KEY, prfArray); |
| |
| return result; |
| } |
| |
| /** Constructs an IkeSaProposal by deserializing a PersistableBundle. */ |
| @NonNull |
| public static IkeSaProposal fromPersistableBundle(@NonNull PersistableBundle in) { |
| Objects.requireNonNull(in, "PersistableBundle was null"); |
| |
| final IkeSaProposal.Builder builder = new IkeSaProposal.Builder(); |
| |
| final PersistableBundle encryptionBundle = in.getPersistableBundle(ENCRYPT_ALGO_KEY); |
| Objects.requireNonNull(encryptionBundle, "Encryption algo bundle was null"); |
| final List<EncryptionAlgoKeyLenPair> encryptList = |
| PersistableBundleUtils.toList(encryptionBundle, EncryptionAlgoKeyLenPair::new); |
| for (EncryptionAlgoKeyLenPair t : encryptList) { |
| builder.addEncryptionAlgorithm(t.encryptionAlgo, t.keyLen); |
| } |
| |
| final int[] integrityAlgoIdArray = in.getIntArray(INTEGRITY_ALGO_KEY); |
| Objects.requireNonNull(integrityAlgoIdArray, "Integrity algo array was null"); |
| for (int algo : integrityAlgoIdArray) { |
| builder.addIntegrityAlgorithm(algo); |
| } |
| |
| final int[] dhGroupArray = in.getIntArray(DH_GROUP_KEY); |
| Objects.requireNonNull(dhGroupArray, "DH Group array was null"); |
| for (int dh : dhGroupArray) { |
| builder.addDhGroup(dh); |
| } |
| |
| final int[] prfArray = in.getIntArray(PRF_KEY); |
| Objects.requireNonNull(prfArray, "PRF array was null"); |
| for (int prf : prfArray) { |
| builder.addPseudorandomFunction(prf); |
| } |
| |
| return builder.build(); |
| } |
| } |