| /* |
| * 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.support.v4.app; |
| |
| import android.content.Context; |
| import android.os.Build; |
| import android.support.annotation.NonNull; |
| |
| /** |
| * Helper for accessing features in android.app.AppOpsManager |
| * introduced after API level 4 in a backwards compatible fashion. |
| */ |
| public final class AppOpsManagerCompat { |
| |
| /** |
| * Result from {@link #noteOp}: the given caller is allowed to |
| * perform the given operation. |
| */ |
| public static final int MODE_ALLOWED = 0; |
| |
| /** |
| * Result from {@link #noteOp}: the given caller is not allowed to perform |
| * the given operation, and this attempt should <em>silently fail</em> (it |
| * should not cause the app to crash). |
| */ |
| public static final int MODE_IGNORED = 1; |
| |
| /** |
| * Result from {@link #noteOp}: the given caller should use its default |
| * security check. This mode is not normally used; it should only be used |
| * with appop permissions, and callers must explicitly check for it and |
| * deal with it. |
| */ |
| public static final int MODE_DEFAULT = 3; |
| |
| private static class AppOpsManagerImpl { |
| public String permissionToOp(String permission) { |
| return null; |
| } |
| |
| public int noteOp(Context context, String op, int uid, String packageName) { |
| return MODE_IGNORED; |
| } |
| |
| public int noteProxyOp(Context context, String op, String proxiedPackageName) { |
| return MODE_IGNORED; |
| } |
| } |
| |
| private static class AppOpsManager23 extends AppOpsManagerImpl { |
| @Override |
| public String permissionToOp(String permission) { |
| return AppOpsManagerCompat23.permissionToOp(permission); |
| } |
| |
| @Override |
| public int noteOp(Context context, String op, int uid, String packageName) { |
| return AppOpsManagerCompat23.noteOp(context, op, uid, packageName); |
| } |
| |
| @Override |
| public int noteProxyOp(Context context, String op, String proxiedPackageName) { |
| return AppOpsManagerCompat23.noteProxyOp(context, op, proxiedPackageName); |
| } |
| } |
| |
| private static final AppOpsManagerImpl IMPL; |
| static { |
| if (Build.VERSION.SDK_INT >= 23) { |
| IMPL = new AppOpsManager23(); |
| } else { |
| IMPL = new AppOpsManagerImpl(); |
| } |
| } |
| |
| private AppOpsManagerCompat() {} |
| |
| /** |
| * Gets the app op name associated with a given permission. |
| * |
| * @param permission The permission. |
| * @return The app op associated with the permission or null. |
| */ |
| public static String permissionToOp(@NonNull String permission) { |
| return IMPL.permissionToOp(permission); |
| } |
| |
| /** |
| * Make note of an application performing an operation. Note that you must pass |
| * in both the uid and name of the application to be checked; this function will verify |
| * that these two match, and if not, return {@link #MODE_IGNORED}. If this call |
| * succeeds, the last execution time of the operation for this app will be updated to |
| * the current time. |
| * @param context Your context. |
| * @param op The operation to note. One of the OPSTR_* constants. |
| * @param uid The user id of the application attempting to perform the operation. |
| * @param packageName The name of the application attempting to perform the operation. |
| * @return Returns {@link #MODE_ALLOWED} if the operation is allowed, or |
| * {@link #MODE_IGNORED} if it is not allowed and should be silently ignored (without |
| * causing the app to crash). |
| * @throws SecurityException If the app has been configured to crash on this op. |
| */ |
| public static int noteOp(@NonNull Context context, @NonNull String op, int uid, |
| @NonNull String packageName) { |
| return IMPL.noteOp(context, op, uid, packageName); |
| } |
| |
| /** |
| * Make note of an application performing an operation on behalf of another |
| * application when handling an IPC. Note that you must pass the package name |
| * of the application that is being proxied while its UID will be inferred from |
| * the IPC state; this function will verify that the calling uid and proxied |
| * package name match, and if not, return {@link #MODE_IGNORED}. If this call |
| * succeeds, the last execution time of the operation for the proxied app and |
| * your app will be updated to the current time. |
| * @param context Your context. |
| * @param op The operation to note. One of the OPSTR_* constants. |
| * @param proxiedPackageName The name of the application calling into the proxy application. |
| * @return Returns {@link #MODE_ALLOWED} if the operation is allowed, or |
| * {@link #MODE_IGNORED} if it is not allowed and should be silently ignored (without |
| * causing the app to crash). |
| * @throws SecurityException If the app has been configured to crash on this op. |
| */ |
| public static int noteProxyOp(@NonNull Context context, @NonNull String op, |
| @NonNull String proxiedPackageName) { |
| return IMPL.noteProxyOp(context, op, proxiedPackageName); |
| } |
| } |