Merge "Create an until function to check location permission"
am: 948c4086af
Change-Id: I3e04a4b2d769beac85a013dafc777ac60f7080f1
This commit is contained in:
Qingxi Li
202
core/java/com/android/internal/util/ConnectivityUtil.java
Normal file
202
core/java/com/android/internal/util/ConnectivityUtil.java
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@@ -0,0 +1,202 @@
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/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.internal.util;
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import android.Manifest;
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import android.annotation.Nullable;
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import android.app.ActivityManager;
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import android.app.AppOpsManager;
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import android.content.Context;
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import android.content.pm.PackageManager;
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import android.location.LocationManager;
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import android.os.Binder;
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import android.os.Build;
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import android.os.UserHandle;
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import android.os.UserManager;
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import android.util.Log;
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import com.android.internal.annotations.VisibleForTesting;
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/**
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* Utility methods for common functionality using by different networks.
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*
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* @hide
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*/
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public class ConnectivityUtil {
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private static final String TAG = "ConnectivityUtil";
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private final Context mContext;
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private final AppOpsManager mAppOps;
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private final UserManager mUserManager;
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public ConnectivityUtil(Context context) {
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mContext = context;
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mAppOps = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE);
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mUserManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
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}
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/**
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* API to determine if the caller has fine/coarse location permission (depending on
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* config/targetSDK level) and the location mode is enabled for the user. SecurityException is
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* thrown if the caller has no permission or the location mode is disabled.
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* @param pkgName package name of the application requesting access
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* @param featureId The feature in the package
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* @param uid The uid of the package
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* @param message A message describing why the permission was checked. Only needed if this is
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* not inside of a two-way binder call from the data receiver
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*/
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public void enforceLocationPermission(String pkgName, @Nullable String featureId, int uid,
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@Nullable String message)
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throws SecurityException {
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checkPackage(uid, pkgName);
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// Location mode must be enabled
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if (!isLocationModeEnabled()) {
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// Location mode is disabled, scan results cannot be returned
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throw new SecurityException("Location mode is disabled for the device");
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}
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// LocationAccess by App: caller must have Coarse/Fine Location permission to have access to
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// location information.
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boolean canAppPackageUseLocation = checkCallersLocationPermission(pkgName, featureId,
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uid, /* coarseForTargetSdkLessThanQ */ true, message);
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// If neither caller or app has location access, there is no need to check
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// any other permissions. Deny access to scan results.
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if (!canAppPackageUseLocation) {
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throw new SecurityException("UID " + uid + " has no location permission");
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}
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// If the User or profile is current, permission is granted
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// Otherwise, uid must have INTERACT_ACROSS_USERS_FULL permission.
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if (!isCurrentProfile(uid) && !checkInteractAcrossUsersFull(uid)) {
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throw new SecurityException("UID " + uid + " profile not permitted");
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}
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}
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/**
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* Checks that calling process has android.Manifest.permission.ACCESS_FINE_LOCATION or
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* android.Manifest.permission.ACCESS_COARSE_LOCATION (depending on config/targetSDK level)
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* and a corresponding app op is allowed for this package and uid.
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*
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* @param pkgName PackageName of the application requesting access
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* @param featureId The feature in the package
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* @param uid The uid of the package
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* @param coarseForTargetSdkLessThanQ If true and the targetSDK < Q then will check for COARSE
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* else (false or targetSDK >= Q) then will check for FINE
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* @param message A message describing why the permission was checked. Only needed if this is
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* not inside of a two-way binder call from the data receiver
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*/
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public boolean checkCallersLocationPermission(String pkgName, @Nullable String featureId,
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int uid, boolean coarseForTargetSdkLessThanQ, @Nullable String message) {
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boolean isTargetSdkLessThanQ = isTargetSdkLessThan(pkgName, Build.VERSION_CODES.Q, uid);
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String permissionType = Manifest.permission.ACCESS_FINE_LOCATION;
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if (coarseForTargetSdkLessThanQ && isTargetSdkLessThanQ) {
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// Having FINE permission implies having COARSE permission (but not the reverse)
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permissionType = Manifest.permission.ACCESS_COARSE_LOCATION;
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}
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if (getUidPermission(permissionType, uid)
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== PackageManager.PERMISSION_DENIED) {
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return false;
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}
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// Always checking FINE - even if will not enforce. This will record the request for FINE
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// so that a location request by the app is surfaced to the user.
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boolean isFineLocationAllowed = noteAppOpAllowed(
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AppOpsManager.OPSTR_FINE_LOCATION, pkgName, featureId, uid, message);
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if (isFineLocationAllowed) {
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return true;
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}
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if (coarseForTargetSdkLessThanQ && isTargetSdkLessThanQ) {
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return noteAppOpAllowed(AppOpsManager.OPSTR_COARSE_LOCATION, pkgName, featureId, uid,
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message);
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}
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return false;
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}
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/**
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* Retrieves a handle to LocationManager (if not already done) and check if location is enabled.
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*/
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public boolean isLocationModeEnabled() {
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LocationManager locationManager =
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(LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
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try {
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return locationManager.isLocationEnabledForUser(UserHandle.of(
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getCurrentUser()));
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} catch (Exception e) {
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Log.e(TAG, "Failure to get location mode via API, falling back to settings", e);
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return false;
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}
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}
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private boolean isTargetSdkLessThan(String packageName, int versionCode, int callingUid) {
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long ident = Binder.clearCallingIdentity();
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try {
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if (mContext.getPackageManager().getApplicationInfoAsUser(
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packageName, 0,
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UserHandle.getUserHandleForUid(callingUid)).targetSdkVersion
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< versionCode) {
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return true;
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}
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} catch (PackageManager.NameNotFoundException e) {
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// In case of exception, assume unknown app (more strict checking)
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// Note: This case will never happen since checkPackage is
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// called to verify validity before checking App's version.
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} finally {
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Binder.restoreCallingIdentity(ident);
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}
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return false;
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}
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private boolean noteAppOpAllowed(String op, String pkgName, @Nullable String featureId,
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int uid, @Nullable String message) {
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return mAppOps.noteOp(op, uid, pkgName) == AppOpsManager.MODE_ALLOWED;
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}
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private void checkPackage(int uid, String pkgName) throws SecurityException {
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if (pkgName == null) {
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throw new SecurityException("Checking UID " + uid + " but Package Name is Null");
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}
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mAppOps.checkPackage(uid, pkgName);
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}
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private boolean isCurrentProfile(int uid) {
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UserHandle currentUser = UserHandle.of(getCurrentUser());
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UserHandle callingUser = UserHandle.getUserHandleForUid(uid);
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return currentUser.equals(callingUser)
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|| mUserManager.isSameProfileGroup(
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currentUser.getIdentifier(), callingUser.getIdentifier());
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}
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private boolean checkInteractAcrossUsersFull(int uid) {
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return getUidPermission(
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android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, uid)
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== PackageManager.PERMISSION_GRANTED;
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}
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@VisibleForTesting
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protected int getCurrentUser() {
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return ActivityManager.getCurrentUser();
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}
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private int getUidPermission(String permissionType, int uid) {
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// We don't care about pid, pass in -1
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return mContext.checkPermission(permissionType, -1, uid);
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}
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}
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@@ -0,0 +1,286 @@
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/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.internal.util;
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import static org.junit.Assert.assertTrue;
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import static org.mockito.ArgumentMatchers.any;
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import static org.mockito.ArgumentMatchers.anyInt;
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import static org.mockito.ArgumentMatchers.anyString;
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import static org.mockito.ArgumentMatchers.eq;
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import static org.mockito.Mockito.doAnswer;
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import static org.mockito.Mockito.doThrow;
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import static org.mockito.Mockito.never;
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import static org.mockito.Mockito.verify;
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import static org.mockito.Mockito.when;
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import android.Manifest;
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import android.app.AppOpsManager;
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import android.content.Context;
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import android.content.pm.ApplicationInfo;
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import android.content.pm.PackageManager;
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import android.location.LocationManager;
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import android.os.Binder;
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import android.os.Build;
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import android.os.UserHandle;
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import android.os.UserManager;
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import org.junit.Assert;
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import org.junit.Before;
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import org.junit.Test;
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import org.mockito.Mock;
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import org.mockito.MockitoAnnotations;
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import org.mockito.invocation.InvocationOnMock;
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import org.mockito.stubbing.Answer;
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import java.util.HashMap;
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/** Unit tests for {@link ConnectivityUtil}. */
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public class ConnectivityUtilTest {
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public static final String TAG = "ConnectivityUtilTest";
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// Mock objects for testing
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@Mock private Context mMockContext;
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@Mock private PackageManager mMockPkgMgr;
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@Mock private ApplicationInfo mMockApplInfo;
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@Mock private AppOpsManager mMockAppOps;
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@Mock private UserManager mMockUserManager;
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@Mock private LocationManager mLocationManager;
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private static final String TEST_PKG_NAME = "com.google.somePackage";
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private static final String TEST_FEATURE_ID = "com.google.someFeature";
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private static final int MANAGED_PROFILE_UID = 1100000;
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private static final int OTHER_USER_UID = 1200000;
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private final String mInteractAcrossUsersFullPermission =
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"android.permission.INTERACT_ACROSS_USERS_FULL";
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private final String mManifestStringCoarse =
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Manifest.permission.ACCESS_COARSE_LOCATION;
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private final String mManifestStringFine =
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Manifest.permission.ACCESS_FINE_LOCATION;
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// Test variables
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private int mWifiScanAllowApps;
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private int mUid;
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private int mCoarseLocationPermission;
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private int mAllowCoarseLocationApps;
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private int mFineLocationPermission;
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private int mAllowFineLocationApps;
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private int mCurrentUser;
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private boolean mIsLocationEnabled;
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private boolean mThrowSecurityException;
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private Answer<Integer> mReturnPermission;
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private HashMap<String, Integer> mPermissionsList = new HashMap<String, Integer>();
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private class TestConnectivityUtil extends ConnectivityUtil {
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TestConnectivityUtil(Context context) {
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super(context);
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}
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@Override
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protected int getCurrentUser() {
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return mCurrentUser;
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}
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}
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@Before
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public void setUp() {
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MockitoAnnotations.initMocks(this);
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initTestVars();
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}
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private void setupMocks() throws Exception {
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when(mMockPkgMgr.getApplicationInfoAsUser(eq(TEST_PKG_NAME), eq(0), any()))
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.thenReturn(mMockApplInfo);
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when(mMockContext.getPackageManager()).thenReturn(mMockPkgMgr);
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when(mMockAppOps.noteOp(AppOpsManager.OPSTR_WIFI_SCAN, mUid, TEST_PKG_NAME))
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.thenReturn(mWifiScanAllowApps);
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when(mMockAppOps.noteOp(eq(AppOpsManager.OPSTR_COARSE_LOCATION), eq(mUid),
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eq(TEST_PKG_NAME)))
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.thenReturn(mAllowCoarseLocationApps);
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when(mMockAppOps.noteOp(eq(AppOpsManager.OPSTR_FINE_LOCATION), eq(mUid),
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eq(TEST_PKG_NAME)))
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.thenReturn(mAllowFineLocationApps);
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if (mThrowSecurityException) {
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doThrow(new SecurityException("Package " + TEST_PKG_NAME + " doesn't belong"
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+ " to application bound to user " + mUid))
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.when(mMockAppOps).checkPackage(mUid, TEST_PKG_NAME);
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}
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when(mMockContext.getSystemService(Context.APP_OPS_SERVICE))
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.thenReturn(mMockAppOps);
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when(mMockContext.getSystemService(Context.USER_SERVICE))
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.thenReturn(mMockUserManager);
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when(mMockContext.getSystemService(Context.LOCATION_SERVICE)).thenReturn(mLocationManager);
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}
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private void setupTestCase() throws Exception {
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setupMocks();
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setupMockInterface();
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}
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private void initTestVars() {
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mPermissionsList.clear();
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mReturnPermission = createPermissionAnswer();
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mWifiScanAllowApps = AppOpsManager.MODE_ERRORED;
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mUid = OTHER_USER_UID;
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mThrowSecurityException = true;
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mMockApplInfo.targetSdkVersion = Build.VERSION_CODES.M;
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mIsLocationEnabled = false;
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mCurrentUser = UserHandle.USER_SYSTEM;
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mCoarseLocationPermission = PackageManager.PERMISSION_DENIED;
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mFineLocationPermission = PackageManager.PERMISSION_DENIED;
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mAllowCoarseLocationApps = AppOpsManager.MODE_ERRORED;
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mAllowFineLocationApps = AppOpsManager.MODE_ERRORED;
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}
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private void setupMockInterface() {
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Binder.restoreCallingIdentity((((long) mUid) << 32) | Binder.getCallingPid());
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doAnswer(mReturnPermission).when(mMockContext).checkPermission(
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anyString(), anyInt(), anyInt());
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when(mMockUserManager.isSameProfileGroup(UserHandle.SYSTEM.getIdentifier(),
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UserHandle.getUserHandleForUid(MANAGED_PROFILE_UID).getIdentifier()))
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.thenReturn(true);
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when(mMockContext.checkPermission(mManifestStringCoarse, -1, mUid))
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.thenReturn(mCoarseLocationPermission);
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when(mMockContext.checkPermission(mManifestStringFine, -1, mUid))
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.thenReturn(mFineLocationPermission);
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when(mLocationManager.isLocationEnabledForUser(any())).thenReturn(mIsLocationEnabled);
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}
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private Answer<Integer> createPermissionAnswer() {
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return new Answer<Integer>() {
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@Override
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public Integer answer(InvocationOnMock invocation) {
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int myUid = (int) invocation.getArguments()[1];
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String myPermission = (String) invocation.getArguments()[0];
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mPermissionsList.get(myPermission);
|
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if (mPermissionsList.containsKey(myPermission)) {
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int uid = mPermissionsList.get(myPermission);
|
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if (myUid == uid) {
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return PackageManager.PERMISSION_GRANTED;
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}
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}
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||||
return PackageManager.PERMISSION_DENIED;
|
||||
}
|
||||
};
|
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}
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@Test
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public void testEnforceLocationPermission_HasAllPermissions_BeforeQ() throws Exception {
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mIsLocationEnabled = true;
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mThrowSecurityException = false;
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mCoarseLocationPermission = PackageManager.PERMISSION_GRANTED;
|
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mAllowCoarseLocationApps = AppOpsManager.MODE_ALLOWED;
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mWifiScanAllowApps = AppOpsManager.MODE_ALLOWED;
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mUid = mCurrentUser;
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setupTestCase();
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new TestConnectivityUtil(mMockContext)
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.enforceLocationPermission(TEST_PKG_NAME, TEST_FEATURE_ID, mUid, null);
|
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}
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|
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@Test
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public void testEnforceLocationPermission_HasAllPermissions_AfterQ() throws Exception {
|
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mMockApplInfo.targetSdkVersion = Build.VERSION_CODES.Q;
|
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mIsLocationEnabled = true;
|
||||
mThrowSecurityException = false;
|
||||
mUid = mCurrentUser;
|
||||
mFineLocationPermission = PackageManager.PERMISSION_GRANTED;
|
||||
mAllowFineLocationApps = AppOpsManager.MODE_ALLOWED;
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||||
mWifiScanAllowApps = AppOpsManager.MODE_ALLOWED;
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setupTestCase();
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||||
new TestConnectivityUtil(mMockContext)
|
||||
.enforceLocationPermission(TEST_PKG_NAME, TEST_FEATURE_ID, mUid, null);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testEnforceLocationPermission_PkgNameAndUidMismatch() throws Exception {
|
||||
mThrowSecurityException = true;
|
||||
mIsLocationEnabled = true;
|
||||
mFineLocationPermission = PackageManager.PERMISSION_GRANTED;
|
||||
mAllowFineLocationApps = AppOpsManager.MODE_ALLOWED;
|
||||
mWifiScanAllowApps = AppOpsManager.MODE_ALLOWED;
|
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setupTestCase();
|
||||
|
||||
assertThrows(SecurityException.class,
|
||||
() -> new TestConnectivityUtil(mMockContext)
|
||||
.enforceLocationPermission(TEST_PKG_NAME, TEST_FEATURE_ID, mUid, null));
|
||||
}
|
||||
|
||||
@Test
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||||
public void testenforceCanAccessScanResults_UserOrProfileNotCurrent() throws Exception {
|
||||
mIsLocationEnabled = true;
|
||||
mThrowSecurityException = false;
|
||||
mCoarseLocationPermission = PackageManager.PERMISSION_GRANTED;
|
||||
mAllowCoarseLocationApps = AppOpsManager.MODE_ALLOWED;
|
||||
mWifiScanAllowApps = AppOpsManager.MODE_ALLOWED;
|
||||
setupTestCase();
|
||||
|
||||
assertThrows(SecurityException.class,
|
||||
() -> new TestConnectivityUtil(mMockContext)
|
||||
.enforceLocationPermission(TEST_PKG_NAME, TEST_FEATURE_ID, mUid, null));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testenforceCanAccessScanResults_NoCoarseLocationPermission() throws Exception {
|
||||
mThrowSecurityException = false;
|
||||
mIsLocationEnabled = true;
|
||||
setupTestCase();
|
||||
assertThrows(SecurityException.class,
|
||||
() -> new TestConnectivityUtil(mMockContext)
|
||||
.enforceLocationPermission(TEST_PKG_NAME, TEST_FEATURE_ID, mUid, null));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testenforceCanAccessScanResults_NoFineLocationPermission() throws Exception {
|
||||
mThrowSecurityException = false;
|
||||
mMockApplInfo.targetSdkVersion = Build.VERSION_CODES.Q;
|
||||
mIsLocationEnabled = true;
|
||||
mCoarseLocationPermission = PackageManager.PERMISSION_GRANTED;
|
||||
mAllowFineLocationApps = AppOpsManager.MODE_ERRORED;
|
||||
mUid = MANAGED_PROFILE_UID;
|
||||
setupTestCase();
|
||||
|
||||
assertThrows(SecurityException.class,
|
||||
() -> new TestConnectivityUtil(mMockContext)
|
||||
.enforceLocationPermission(TEST_PKG_NAME, TEST_FEATURE_ID, mUid, null));
|
||||
verify(mMockAppOps, never()).noteOp(anyInt(), anyInt(), anyString());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testenforceCanAccessScanResults_LocationModeDisabled() throws Exception {
|
||||
mThrowSecurityException = false;
|
||||
mUid = MANAGED_PROFILE_UID;
|
||||
mWifiScanAllowApps = AppOpsManager.MODE_ALLOWED;
|
||||
mPermissionsList.put(mInteractAcrossUsersFullPermission, mUid);
|
||||
mIsLocationEnabled = false;
|
||||
|
||||
setupTestCase();
|
||||
|
||||
assertThrows(SecurityException.class,
|
||||
() -> new TestConnectivityUtil(mMockContext)
|
||||
.enforceLocationPermission(TEST_PKG_NAME, TEST_FEATURE_ID, mUid, null));
|
||||
}
|
||||
|
||||
private static void assertThrows(Class<? extends Exception> exceptionClass, Runnable r) {
|
||||
try {
|
||||
r.run();
|
||||
Assert.fail("Expected " + exceptionClass + " to be thrown.");
|
||||
} catch (Exception exception) {
|
||||
assertTrue(exceptionClass.isInstance(exception));
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user