| /* |
| * Copyright (C) 2016 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.permission; |
| |
| import static android.app.admin.DevicePolicyManager.PERMISSION_GRANT_STATE_DEFAULT; |
| import static android.app.admin.DevicePolicyManager.PERMISSION_GRANT_STATE_DENIED; |
| import static android.app.admin.DevicePolicyManager.PERMISSION_GRANT_STATE_GRANTED; |
| import static android.permission.PermissionControllerManager.COUNT_ONLY_WHEN_GRANTED; |
| import static android.permission.PermissionControllerManager.COUNT_WHEN_SYSTEM; |
| |
| import static com.android.internal.util.Preconditions.checkArgument; |
| import static com.android.internal.util.Preconditions.checkArgumentNonnegative; |
| import static com.android.internal.util.Preconditions.checkCollectionElementsNotNull; |
| import static com.android.internal.util.Preconditions.checkFlagsArgument; |
| import static com.android.internal.util.Preconditions.checkNotNull; |
| import static com.android.internal.util.Preconditions.checkStringNotEmpty; |
| |
| import android.Manifest; |
| import android.annotation.BinderThread; |
| import android.annotation.NonNull; |
| import android.annotation.SystemApi; |
| import android.app.Service; |
| import android.app.admin.DevicePolicyManager.PermissionGrantState; |
| import android.content.Intent; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.os.Bundle; |
| import android.os.IBinder; |
| import android.os.ParcelFileDescriptor; |
| import android.os.UserHandle; |
| import android.permission.PermissionControllerManager.CountPermissionAppsFlag; |
| import android.util.ArrayMap; |
| import android.util.Log; |
| |
| import com.android.internal.infra.AndroidFuture; |
| import com.android.internal.util.CollectionUtils; |
| import com.android.internal.util.Preconditions; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.function.Consumer; |
| import java.util.function.IntConsumer; |
| |
| /** |
| * This service is meant to be implemented by the app controlling permissions. |
| * |
| * @see PermissionControllerManager |
| * |
| * @hide |
| */ |
| @SystemApi |
| public abstract class PermissionControllerService extends Service { |
| private static final String LOG_TAG = PermissionControllerService.class.getSimpleName(); |
| |
| /** |
| * The {@link Intent} action that must be declared as handled by a service |
| * in its manifest for the system to recognize it as a runtime permission |
| * presenter service. |
| */ |
| public static final String SERVICE_INTERFACE = "android.permission.PermissionControllerService"; |
| |
| /** |
| * Revoke a set of runtime permissions for various apps. |
| * |
| * @param requests The permissions to revoke as {@code Map<packageName, List<permission>>} |
| * @param doDryRun Compute the permissions that would be revoked, but not actually revoke them |
| * @param reason Why the permission should be revoked |
| * @param callerPackageName The package name of the calling app |
| * @param callback Callback waiting for the actually removed permissions as |
| * {@code Map<packageName, List<permission>>} |
| */ |
| @BinderThread |
| public abstract void onRevokeRuntimePermissions( |
| @NonNull Map<String, List<String>> requests, boolean doDryRun, |
| @PermissionControllerManager.Reason int reason, @NonNull String callerPackageName, |
| @NonNull Consumer<Map<String, List<String>>> callback); |
| |
| /** |
| * Create a backup of the runtime permissions. |
| * |
| * @param user The user to back up |
| * @param backup The stream to write the backup to |
| * @param callback Callback waiting for operation to be complete |
| */ |
| @BinderThread |
| public abstract void onGetRuntimePermissionsBackup(@NonNull UserHandle user, |
| @NonNull OutputStream backup, @NonNull Runnable callback); |
| |
| |
| /** |
| * @deprecated Implement {@link #onStageAndApplyRuntimePermissionsBackup} instead |
| */ |
| @Deprecated |
| @BinderThread |
| public void onRestoreRuntimePermissionsBackup(@NonNull UserHandle user, |
| @NonNull InputStream backup, @NonNull Runnable callback) { |
| } |
| |
| /** |
| * Restore a backup of the runtime permissions. |
| * |
| * <p>If an app mentioned in the backup is not installed the state should be saved to later |
| * be restored via {@link #onApplyStagedRuntimePermissionBackup}. |
| * |
| * @param user The user to restore |
| * @param backup The stream to read the backup from |
| * @param callback Callback waiting for operation to be complete |
| */ |
| @BinderThread |
| public void onStageAndApplyRuntimePermissionsBackup(@NonNull UserHandle user, |
| @NonNull InputStream backup, @NonNull Runnable callback) { |
| onRestoreRuntimePermissionsBackup(user, backup, callback); |
| } |
| |
| /** |
| * @deprecated Implement {@link #onApplyStagedRuntimePermissionBackup} instead |
| */ |
| @Deprecated |
| @BinderThread |
| public void onRestoreDelayedRuntimePermissionsBackup(@NonNull String packageName, |
| @NonNull UserHandle user, @NonNull Consumer<Boolean> callback) { |
| } |
| |
| /** |
| * Restore the permission state of an app that was provided in |
| * {@link #onStageAndApplyRuntimePermissionsBackup} but could not be restored back then. |
| * |
| * @param packageName The app to restore |
| * @param user The user to restore |
| * @param callback Callback waiting for whether there is still delayed backup left |
| */ |
| @BinderThread |
| public void onApplyStagedRuntimePermissionBackup(@NonNull String packageName, |
| @NonNull UserHandle user, @NonNull Consumer<Boolean> callback) { |
| onRestoreDelayedRuntimePermissionsBackup(packageName, user, callback); |
| } |
| |
| /** |
| * Gets the runtime permissions for an app. |
| * |
| * @param packageName The package for which to query. |
| * @param callback Callback waiting for the descriptions of the runtime permissions of the app |
| */ |
| @BinderThread |
| public abstract void onGetAppPermissions(@NonNull String packageName, |
| @NonNull Consumer<List<RuntimePermissionPresentationInfo>> callback); |
| |
| /** |
| * Revokes the permission {@code permissionName} for app {@code packageName} |
| * |
| * @param packageName The package for which to revoke |
| * @param permissionName The permission to revoke |
| * @param callback Callback waiting for operation to be complete |
| */ |
| @BinderThread |
| public abstract void onRevokeRuntimePermission(@NonNull String packageName, |
| @NonNull String permissionName, @NonNull Runnable callback); |
| |
| /** |
| * Count how many apps have one of a set of permissions. |
| * |
| * @param permissionNames The permissions the app might have |
| * @param flags Modify which apps to count. By default all non-system apps that request a |
| * permission are counted |
| * @param callback Callback waiting for the number of apps that have one of the permissions |
| */ |
| @BinderThread |
| public abstract void onCountPermissionApps(@NonNull List<String> permissionNames, |
| @CountPermissionAppsFlag int flags, @NonNull IntConsumer callback); |
| |
| /** |
| * Count how many apps have used permissions. |
| * |
| * @param countSystem Also count system apps |
| * @param numMillis The number of milliseconds in the past to check for uses |
| * @param callback Callback waiting for the descriptions of the users of permissions |
| */ |
| @BinderThread |
| public abstract void onGetPermissionUsages(boolean countSystem, long numMillis, |
| @NonNull Consumer<List<RuntimePermissionUsageInfo>> callback); |
| |
| /** |
| * Grant or upgrade runtime permissions. The upgrade could be performed |
| * based on whether the device upgraded, whether the permission database |
| * version is old, or because the permission policy changed. |
| * |
| * @param callback Callback waiting for operation to be complete |
| * |
| * @see PackageManager#isDeviceUpgrading() |
| * @see PermissionManager#getRuntimePermissionsVersion() |
| * @see PermissionManager#setRuntimePermissionsVersion(int) |
| */ |
| @BinderThread |
| public abstract void onGrantOrUpgradeDefaultRuntimePermissions(@NonNull Runnable callback); |
| |
| /** |
| * Called by system to update the |
| * {@link PackageManager}{@code .FLAG_PERMISSION_USER_SENSITIVE_WHEN_*} flags for permissions. |
| * <p> |
| * This is typically when creating a new user or upgrading either system or |
| * permission controller package. |
| */ |
| @BinderThread |
| public void onUpdateUserSensitivePermissionFlags() { |
| throw new AbstractMethodError("Must be overridden in implementing class"); |
| } |
| |
| /** |
| * Set the runtime permission state from a device admin. |
| * |
| * @param callerPackageName The package name of the admin requesting the change |
| * @param packageName Package the permission belongs to |
| * @param permission Permission to change |
| * @param grantState State to set the permission into |
| * @param callback Callback waiting for whether the state could be set or not |
| */ |
| @BinderThread |
| public abstract void onSetRuntimePermissionGrantStateByDeviceAdmin( |
| @NonNull String callerPackageName, @NonNull String packageName, |
| @NonNull String permission, @PermissionGrantState int grantState, |
| @NonNull Consumer<Boolean> callback); |
| |
| @Override |
| public final @NonNull IBinder onBind(Intent intent) { |
| return new IPermissionController.Stub() { |
| @Override |
| public void revokeRuntimePermissions( |
| Bundle bundleizedRequest, boolean doDryRun, int reason, |
| String callerPackageName, AndroidFuture callback) { |
| checkNotNull(bundleizedRequest, "bundleizedRequest"); |
| checkNotNull(callerPackageName); |
| checkNotNull(callback); |
| |
| Map<String, List<String>> request = new ArrayMap<>(); |
| for (String packageName : bundleizedRequest.keySet()) { |
| Preconditions.checkNotNull(packageName); |
| |
| ArrayList<String> permissions = |
| bundleizedRequest.getStringArrayList(packageName); |
| Preconditions.checkCollectionElementsNotNull(permissions, "permissions"); |
| |
| request.put(packageName, permissions); |
| } |
| |
| enforceSomePermissionsGrantedToCaller( |
| Manifest.permission.REVOKE_RUNTIME_PERMISSIONS); |
| |
| // Verify callerPackageName |
| try { |
| PackageInfo pkgInfo = getPackageManager().getPackageInfo(callerPackageName, 0); |
| checkArgument(getCallingUid() == pkgInfo.applicationInfo.uid); |
| } catch (PackageManager.NameNotFoundException e) { |
| throw new RuntimeException(e); |
| } |
| |
| onRevokeRuntimePermissions(request, |
| doDryRun, reason, callerPackageName, revoked -> { |
| CollectionUtils.forEach(revoked, (pkg, perms) -> { |
| Preconditions.checkNotNull(pkg); |
| Preconditions.checkCollectionElementsNotNull(perms, "permissions"); |
| }); |
| callback.complete(revoked); |
| }); |
| } |
| |
| /** |
| * Throw a {@link SecurityException} if not at least one of the permissions is granted. |
| * |
| * @param requiredPermissions A list of permissions. Any of of them if sufficient to |
| * pass the check |
| */ |
| private void enforceSomePermissionsGrantedToCaller( |
| @NonNull String... requiredPermissions) { |
| for (String requiredPermission : requiredPermissions) { |
| if (checkCallingPermission(requiredPermission) |
| == PackageManager.PERMISSION_GRANTED) { |
| return; |
| } |
| } |
| |
| throw new SecurityException( |
| "At lest one of the following permissions is required: " + Arrays.toString( |
| requiredPermissions)); |
| } |
| |
| |
| @Override |
| public void getRuntimePermissionBackup(UserHandle user, ParcelFileDescriptor pipe) { |
| checkNotNull(user); |
| checkNotNull(pipe); |
| |
| enforceSomePermissionsGrantedToCaller(Manifest.permission.GET_RUNTIME_PERMISSIONS); |
| |
| try (OutputStream backup = new ParcelFileDescriptor.AutoCloseOutputStream(pipe)) { |
| CountDownLatch latch = new CountDownLatch(1); |
| onGetRuntimePermissionsBackup(user, backup, latch::countDown); |
| latch.await(); |
| } catch (IOException e) { |
| Log.e(LOG_TAG, "Could not open pipe to write backup to", e); |
| } catch (InterruptedException e) { |
| Log.e(LOG_TAG, "getRuntimePermissionBackup timed out", e); |
| } |
| } |
| |
| @Override |
| public void stageAndApplyRuntimePermissionsBackup(UserHandle user, |
| ParcelFileDescriptor pipe) { |
| checkNotNull(user); |
| checkNotNull(pipe); |
| |
| enforceSomePermissionsGrantedToCaller(Manifest.permission.GRANT_RUNTIME_PERMISSIONS, |
| Manifest.permission.RESTORE_RUNTIME_PERMISSIONS); |
| |
| try (InputStream backup = new ParcelFileDescriptor.AutoCloseInputStream(pipe)) { |
| CountDownLatch latch = new CountDownLatch(1); |
| onStageAndApplyRuntimePermissionsBackup(user, backup, latch::countDown); |
| latch.await(); |
| } catch (IOException e) { |
| Log.e(LOG_TAG, "Could not open pipe to read backup from", e); |
| } catch (InterruptedException e) { |
| Log.e(LOG_TAG, "restoreRuntimePermissionBackup timed out", e); |
| } |
| } |
| |
| @Override |
| public void applyStagedRuntimePermissionBackup(String packageName, UserHandle user, |
| AndroidFuture callback) { |
| checkNotNull(packageName); |
| checkNotNull(user); |
| checkNotNull(callback); |
| |
| enforceSomePermissionsGrantedToCaller(Manifest.permission.GRANT_RUNTIME_PERMISSIONS, |
| Manifest.permission.RESTORE_RUNTIME_PERMISSIONS); |
| |
| onApplyStagedRuntimePermissionBackup(packageName, user, callback::complete); |
| } |
| |
| @Override |
| public void getAppPermissions(String packageName, AndroidFuture callback) { |
| checkNotNull(packageName, "packageName"); |
| checkNotNull(callback, "callback"); |
| |
| enforceSomePermissionsGrantedToCaller(Manifest.permission.GET_RUNTIME_PERMISSIONS); |
| |
| onGetAppPermissions(packageName, callback::complete); |
| } |
| |
| @Override |
| public void revokeRuntimePermission(String packageName, String permissionName) { |
| checkNotNull(packageName, "packageName"); |
| checkNotNull(permissionName, "permissionName"); |
| |
| enforceSomePermissionsGrantedToCaller( |
| Manifest.permission.REVOKE_RUNTIME_PERMISSIONS); |
| |
| CountDownLatch latch = new CountDownLatch(1); |
| PermissionControllerService.this.onRevokeRuntimePermission(packageName, |
| permissionName, latch::countDown); |
| try { |
| latch.await(); |
| } catch (InterruptedException e) { |
| Log.e(LOG_TAG, "revokeRuntimePermission timed out", e); |
| } |
| } |
| |
| @Override |
| public void countPermissionApps(List<String> permissionNames, int flags, |
| AndroidFuture callback) { |
| checkCollectionElementsNotNull(permissionNames, "permissionNames"); |
| checkFlagsArgument(flags, COUNT_WHEN_SYSTEM | COUNT_ONLY_WHEN_GRANTED); |
| checkNotNull(callback, "callback"); |
| |
| enforceSomePermissionsGrantedToCaller(Manifest.permission.GET_RUNTIME_PERMISSIONS); |
| |
| onCountPermissionApps(permissionNames, flags, callback::complete); |
| } |
| |
| @Override |
| public void getPermissionUsages(boolean countSystem, long numMillis, |
| AndroidFuture callback) { |
| checkArgumentNonnegative(numMillis); |
| checkNotNull(callback, "callback"); |
| |
| enforceSomePermissionsGrantedToCaller(Manifest.permission.GET_RUNTIME_PERMISSIONS); |
| |
| onGetPermissionUsages(countSystem, numMillis, callback::complete); |
| } |
| |
| @Override |
| public void setRuntimePermissionGrantStateByDeviceAdmin(String callerPackageName, |
| String packageName, String permission, int grantState, |
| AndroidFuture callback) { |
| checkStringNotEmpty(callerPackageName); |
| checkStringNotEmpty(packageName); |
| checkStringNotEmpty(permission); |
| checkArgument(grantState == PERMISSION_GRANT_STATE_GRANTED |
| || grantState == PERMISSION_GRANT_STATE_DENIED |
| || grantState == PERMISSION_GRANT_STATE_DEFAULT); |
| checkNotNull(callback); |
| |
| if (grantState == PERMISSION_GRANT_STATE_DENIED) { |
| enforceSomePermissionsGrantedToCaller( |
| Manifest.permission.GRANT_RUNTIME_PERMISSIONS); |
| } |
| |
| if (grantState == PERMISSION_GRANT_STATE_DENIED) { |
| enforceSomePermissionsGrantedToCaller( |
| Manifest.permission.REVOKE_RUNTIME_PERMISSIONS); |
| } |
| |
| enforceSomePermissionsGrantedToCaller( |
| Manifest.permission.ADJUST_RUNTIME_PERMISSIONS_POLICY); |
| |
| onSetRuntimePermissionGrantStateByDeviceAdmin(callerPackageName, |
| packageName, permission, grantState, callback::complete); |
| } |
| |
| @Override |
| public void grantOrUpgradeDefaultRuntimePermissions(@NonNull AndroidFuture callback) { |
| checkNotNull(callback, "callback"); |
| |
| enforceSomePermissionsGrantedToCaller( |
| Manifest.permission.ADJUST_RUNTIME_PERMISSIONS_POLICY); |
| |
| onGrantOrUpgradeDefaultRuntimePermissions(() -> callback.complete(true)); |
| } |
| |
| @Override |
| public void updateUserSensitive(AndroidFuture callback) { |
| Preconditions.checkNotNull(callback, "callback cannot be null"); |
| |
| onUpdateUserSensitivePermissionFlags(); |
| callback.complete(null); |
| } |
| }; |
| } |
| } |