| /* |
| * 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 com.android.server.pm.permission; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.UserIdInt; |
| import android.util.ArrayMap; |
| import android.util.SparseArray; |
| import android.util.SparseBooleanArray; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Objects; |
| |
| /** |
| * Legacy permission state that was associated with packages or shared users. |
| */ |
| //@SystemApi(client = SystemApi.Client.SYSTEM_SERVER) |
| public final class LegacyPermissionState { |
| // Maps from user IDs to user states. |
| @NonNull |
| private final SparseArray<UserState> mUserStates = new SparseArray<>(); |
| |
| // Keyed by user IDs. |
| @NonNull |
| private final SparseBooleanArray mMissing = new SparseBooleanArray(); |
| |
| /** |
| * Copy from another permission state. |
| * |
| * @param other the other permission state. |
| * |
| * @hide |
| */ |
| public void copyFrom(@NonNull LegacyPermissionState other) { |
| if (other == this) { |
| return; |
| } |
| |
| mUserStates.clear(); |
| final int userStatesSize = other.mUserStates.size(); |
| for (int i = 0; i < userStatesSize; i++) { |
| mUserStates.put(other.mUserStates.keyAt(i), |
| new UserState(other.mUserStates.valueAt(i))); |
| } |
| |
| mMissing.clear(); |
| final int missingSize = other.mMissing.size(); |
| for (int i = 0; i < missingSize; i++) { |
| mMissing.put(other.mMissing.keyAt(i), other.mMissing.valueAt(i)); |
| } |
| } |
| |
| /** |
| * Reset this permission state. |
| * |
| * @hide |
| */ |
| public void reset() { |
| mUserStates.clear(); |
| mMissing.clear(); |
| } |
| |
| @Override |
| public boolean equals(@Nullable Object object) { |
| if (this == object) { |
| return true; |
| } |
| if (object == null) { |
| return false; |
| } |
| if (getClass() != object.getClass()) { |
| return false; |
| } |
| final LegacyPermissionState other = (LegacyPermissionState) object; |
| // Hand-code equals() for mUserStates, since SparseArray only has the |
| // default equals() method. |
| final int userStatesSize = mUserStates.size(); |
| if (userStatesSize != other.mUserStates.size()) { |
| return false; |
| } |
| for (int i = 0; i < userStatesSize; i++) { |
| final int userId = mUserStates.keyAt(i); |
| if (!Objects.equals(mUserStates.get(userId), other.mUserStates.get(userId))) { |
| return false; |
| } |
| } |
| return Objects.equals(mMissing, other.mMissing); |
| } |
| |
| /** |
| * Get the permission state for a permission and a user. |
| * |
| * @param permissionName the permission name |
| * @param userId the user ID |
| * @return the permission state |
| * |
| * @hide |
| */ |
| @Nullable |
| public PermissionState getPermissionState(@NonNull String permissionName, |
| @UserIdInt int userId) { |
| checkUserId(userId); |
| UserState userState = mUserStates.get(userId); |
| if (userState == null) { |
| return null; |
| } |
| return userState.getPermissionState(permissionName); |
| } |
| |
| /** |
| * Put a permission state for a user. |
| * |
| * @param permissionState the permission state |
| * @param userId the user ID |
| */ |
| public void putPermissionState(@NonNull PermissionState permissionState, |
| @UserIdInt int userId) { |
| checkUserId(userId); |
| UserState userState = mUserStates.get(userId); |
| if (userState == null) { |
| userState = new UserState(); |
| mUserStates.put(userId, userState); |
| } |
| userState.putPermissionState(permissionState); |
| } |
| |
| /** |
| * Check whether there are any permission states for the given permissions. |
| * |
| * @param permissionNames the permission names |
| * @return whether there are any permission states |
| * |
| * @hide |
| */ |
| public boolean hasPermissionState(@NonNull Collection<String> permissionNames) { |
| final int userStatesSize = mUserStates.size(); |
| for (int i = 0; i < userStatesSize; i++) { |
| final UserState userState = mUserStates.valueAt(i); |
| for (final String permissionName : permissionNames) { |
| if (userState.getPermissionState(permissionName) != null) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Get all the permission states for a user. |
| * |
| * @param userId the user ID |
| * @return the permission states |
| */ |
| @NonNull |
| public Collection<PermissionState> getPermissionStates(@UserIdInt int userId) { |
| checkUserId(userId); |
| final UserState userState = mUserStates.get(userId); |
| if (userState == null) { |
| return Collections.emptyList(); |
| } |
| return userState.getPermissionStates(); |
| } |
| |
| /** |
| * Check whether the permission state is missing for a user. |
| * <p> |
| * This can happen if permission state is rolled back and we'll need to generate a reasonable |
| * default state to keep the app usable. |
| * |
| * @param userId the user ID |
| * @return whether the permission state is missing |
| */ |
| public boolean isMissing(@UserIdInt int userId) { |
| checkUserId(userId); |
| return mMissing.get(userId); |
| } |
| |
| /** |
| * Set whether the permission state is missing for a user. |
| * <p> |
| * This can happen if permission state is rolled back and we'll need to generate a reasonable |
| * default state to keep the app usable. |
| * |
| * @param missing whether the permission state is missing |
| * @param userId the user ID |
| */ |
| public void setMissing(boolean missing, @UserIdInt int userId) { |
| checkUserId(userId); |
| if (missing) { |
| mMissing.put(userId, true); |
| } else { |
| mMissing.delete(userId); |
| } |
| } |
| |
| private static void checkUserId(@UserIdInt int userId) { |
| if (userId < 0) { |
| throw new IllegalArgumentException("Invalid user ID " + userId); |
| } |
| } |
| |
| /** |
| * Legacy state for permissions for a user. |
| */ |
| private static final class UserState { |
| // Maps from permission names to permission states. |
| @NonNull |
| private final ArrayMap<String, PermissionState> mPermissionStates = new ArrayMap<>(); |
| |
| public UserState() {} |
| |
| public UserState(@NonNull UserState other) { |
| final int permissionStatesSize = other.mPermissionStates.size(); |
| for (int i = 0; i < permissionStatesSize; i++) { |
| mPermissionStates.put(other.mPermissionStates.keyAt(i), |
| new PermissionState(other.mPermissionStates.valueAt(i))); |
| } |
| } |
| |
| @Nullable |
| public PermissionState getPermissionState(@NonNull String permissionName) { |
| return mPermissionStates.get(permissionName); |
| } |
| |
| public void putPermissionState(@NonNull PermissionState permissionState) { |
| mPermissionStates.put(permissionState.getName(), permissionState); |
| } |
| |
| @NonNull |
| public Collection<PermissionState> getPermissionStates() { |
| return Collections.unmodifiableCollection(mPermissionStates.values()); |
| } |
| } |
| |
| /** |
| * Legacy state for a single permission. |
| */ |
| public static final class PermissionState { |
| @NonNull |
| private final String mName; |
| |
| private final boolean mRuntime; |
| |
| private final boolean mGranted; |
| |
| private final int mFlags; |
| |
| /** |
| * Create a new instance of this class. |
| * |
| * @param name the name of the permission |
| * @param runtime whether the permission is runtime |
| * @param granted whether the permission is granted |
| * @param flags the permission flags |
| */ |
| public PermissionState(@NonNull String name, boolean runtime, boolean granted, int flags) { |
| mName = name; |
| mRuntime = runtime; |
| mGranted = granted; |
| mFlags = flags; |
| } |
| |
| private PermissionState(@NonNull PermissionState other) { |
| mName = other.mName; |
| mRuntime = other.mRuntime; |
| mGranted = other.mGranted; |
| mFlags = other.mFlags; |
| } |
| |
| /** |
| * Get the permission name. |
| * |
| * @return the permission name |
| */ |
| @NonNull |
| public String getName() { |
| return mName; |
| } |
| |
| /** |
| * Get whether the permission is a runtime permission. |
| * |
| * @return whether the permission is a runtime permission. |
| */ |
| public boolean isRuntime() { |
| return mRuntime; |
| } |
| |
| /** |
| * Get whether the permission is granted. |
| * |
| * @return whether the permission is granted |
| */ |
| @NonNull |
| public boolean isGranted() { |
| return mGranted; |
| } |
| |
| /** |
| * Get the permission flags. |
| * |
| * @return the permission flags |
| */ |
| @NonNull |
| public int getFlags() { |
| return mFlags; |
| } |
| |
| @Override |
| public boolean equals(@Nullable Object object) { |
| if (this == object) { |
| return true; |
| } |
| if (object == null || getClass() != object.getClass()) { |
| return false; |
| } |
| PermissionState that = (PermissionState) object; |
| return mRuntime == that.mRuntime |
| && mGranted == that.mGranted |
| && mFlags == that.mFlags |
| && Objects.equals(mName, that.mName); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(mName, mRuntime, mGranted, mFlags); |
| } |
| } |
| } |