content: /*
   * Copyright (C) 2013 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 com.android.server.pm;
  
  import android.util.ArrayMap;
  
  import com.android.internal.util.ArrayUtils;
  
  public class PackageKeySetData {
  
      static final long KEYSET_UNASSIGNED = -1;
  
      /* KeySet containing all signing keys - superset of the others */
      private long mProperSigningKeySet;
  
      private long[] mUpgradeKeySets;
  
      private final ArrayMap<String, Long> mKeySetAliases = new ArrayMap<String, Long>();
  
      PackageKeySetData() {
          mProperSigningKeySet = KEYSET_UNASSIGNED;
      }
  
      PackageKeySetData(PackageKeySetData original) {
          mProperSigningKeySet = original.mProperSigningKeySet;
          mUpgradeKeySets = ArrayUtils.cloneOrNull(original.mUpgradeKeySets);
          mKeySetAliases.putAll(original.mKeySetAliases);
      }
  
      protected void setProperSigningKeySet(long ks) {
          mProperSigningKeySet = ks;
          return;
      }
  
      protected long getProperSigningKeySet() {
          return mProperSigningKeySet;
      }
  
      protected void addUpgradeKeySet(String alias) {
          if (alias == null) {
              return;
          }
  
          /* must have previously been defined */
          Long ks = mKeySetAliases.get(alias);
          if (ks != null) {
              mUpgradeKeySets = ArrayUtils.appendLong(mUpgradeKeySets, ks);
          } else {
              throw new IllegalArgumentException("Upgrade keyset alias " + alias
                      + "does not refer to a defined keyset alias!");
          }
      }
  
      /*
       * Used only when restoring keyset data from persistent storage.  Must
       * correspond to a defined-keyset.
       */
  
      protected void addUpgradeKeySetById(long ks) {
          mUpgradeKeySets = ArrayUtils.appendLong(mUpgradeKeySets, ks);
      }
  
      protected void removeAllUpgradeKeySets() {
          mUpgradeKeySets = null;
          return;
      }
  
      protected long[] getUpgradeKeySets() {
          return mUpgradeKeySets;
      }
  
      protected ArrayMap<String, Long> getAliases() {
          return mKeySetAliases;
      }
  
      /*
       * Replace defined keysets with new ones.
       */
      protected void setAliases(ArrayMap<String, Long> newAliases) {
  
          /* remove old aliases */
          removeAllDefinedKeySets();
  
          /* add new ones */
          final int newAliasSize = newAliases.size();
          for (int i = 0; i < newAliasSize; i++) {
              mKeySetAliases.put(newAliases.keyAt(i), newAliases.valueAt(i));;
          }
      }
  
      protected void addDefinedKeySet(long ks, String alias) {
          mKeySetAliases.put(alias, ks);
      }
  
      protected void removeAllDefinedKeySets() {
          mKeySetAliases.erase();
      }
  
      protected boolean isUsingDefinedKeySets() {
  
          /* should never be the case that mUpgradeKeySets.length == 0 */
          return (mKeySetAliases.size() > 0);
      }
  
      protected boolean isUsingUpgradeKeySets() {
  
          /* should never be the case that mUpgradeKeySets.length == 0 */
          return (mUpgradeKeySets != null && mUpgradeKeySets.length > 0);
      }
  }
  