| /* |
| * Copyright (C) 2019 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.policy; |
| |
| import static android.app.AppOpsManager.MODE_ALLOWED; |
| import static android.app.AppOpsManager.MODE_FOREGROUND; |
| import static android.app.AppOpsManager.MODE_IGNORED; |
| import static android.app.AppOpsManager.OP_NONE; |
| import static android.content.pm.PackageManager.FLAG_PERMISSION_APPLY_RESTRICTION; |
| import static android.content.pm.PackageManager.FLAG_PERMISSION_REVIEW_REQUIRED; |
| import static android.content.pm.PackageManager.FLAG_PERMISSION_REVOKED_COMPAT; |
| import static android.content.pm.PackageManager.GET_PERMISSIONS; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.UserIdInt; |
| import android.app.AppOpsManager; |
| import android.app.AppOpsManagerInternal; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.content.pm.PackageManagerInternal; |
| import android.content.pm.PackageManagerInternal.PackageListObserver; |
| import android.content.pm.PermissionInfo; |
| import android.os.Build; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.UserHandle; |
| import android.os.UserManagerInternal; |
| import android.permission.PermissionControllerManager; |
| import android.provider.Settings; |
| import android.provider.Telephony; |
| import android.telecom.TelecomManager; |
| import android.util.ArrayMap; |
| import android.util.ArraySet; |
| import android.util.LongSparseLongArray; |
| import android.util.Pair; |
| import android.util.Slog; |
| import android.util.SparseBooleanArray; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.app.IAppOpsCallback; |
| import com.android.internal.app.IAppOpsService; |
| import com.android.internal.infra.AndroidFuture; |
| import com.android.internal.util.IntPair; |
| import com.android.internal.util.function.pooled.PooledLambda; |
| import com.android.server.FgThread; |
| import com.android.server.LocalServices; |
| import com.android.server.SystemService; |
| import com.android.server.pm.parsing.pkg.AndroidPackage; |
| import com.android.server.pm.permission.PermissionManagerServiceInternal; |
| import com.android.server.policy.PermissionPolicyInternal.OnInitializedCallback; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.ExecutionException; |
| |
| /** |
| * This is a permission policy that governs over all permission mechanism |
| * such as permissions, app ops, etc. For example, the policy ensures that |
| * permission state and app ops is synchronized for cases where there is a |
| * dependency between permission state (permissions or permission flags) |
| * and app ops - and vise versa. |
| */ |
| public final class PermissionPolicyService extends SystemService { |
| private static final String LOG_TAG = PermissionPolicyService.class.getSimpleName(); |
| private static final boolean DEBUG = false; |
| private static final long USER_SENSITIVE_UPDATE_DELAY_MS = 10000; |
| |
| private final Object mLock = new Object(); |
| |
| private IAppOpsCallback mAppOpsCallback; |
| |
| /** Whether the user is started but not yet stopped */ |
| @GuardedBy("mLock") |
| private final SparseBooleanArray mIsStarted = new SparseBooleanArray(); |
| |
| /** Callbacks for when a user is initialized */ |
| @GuardedBy("mLock") |
| private OnInitializedCallback mOnInitializedCallback; |
| |
| /** |
| * Whether an async {@link #synchronizePackagePermissionsAndAppOpsForUser} is currently |
| * scheduled for a package/user. |
| */ |
| @GuardedBy("mLock") |
| private final ArraySet<Pair<String, Integer>> mIsPackageSyncsScheduled = new ArraySet<>(); |
| |
| /** |
| * Whether an async {@link #resetAppOpPermissionsIfNotRequestedForUid} is currently |
| * scheduled for a uid. |
| */ |
| @GuardedBy("mLock") |
| private final SparseBooleanArray mIsUidSyncScheduled = new SparseBooleanArray(); |
| |
| private List<String> mAppOpPermissions; |
| |
| public PermissionPolicyService(@NonNull Context context) { |
| super(context); |
| |
| LocalServices.addService(PermissionPolicyInternal.class, new Internal()); |
| } |
| |
| @Override |
| public void onStart() { |
| final PackageManagerInternal packageManagerInternal = LocalServices.getService( |
| PackageManagerInternal.class); |
| final PermissionManagerServiceInternal permissionManagerInternal = LocalServices.getService( |
| PermissionManagerServiceInternal.class); |
| final IAppOpsService appOpsService = IAppOpsService.Stub.asInterface( |
| ServiceManager.getService(Context.APP_OPS_SERVICE)); |
| |
| packageManagerInternal.getPackageList(new PackageListObserver() { |
| @Override |
| public void onPackageAdded(String packageName, int uid) { |
| final int userId = UserHandle.getUserId(uid); |
| if (isStarted(userId)) { |
| synchronizePackagePermissionsAndAppOpsForUser(packageName, userId); |
| } |
| } |
| |
| @Override |
| public void onPackageChanged(String packageName, int uid) { |
| final int userId = UserHandle.getUserId(uid); |
| if (isStarted(userId)) { |
| synchronizePackagePermissionsAndAppOpsForUser(packageName, userId); |
| resetAppOpPermissionsIfNotRequestedForUid(uid); |
| } |
| } |
| |
| @Override |
| public void onPackageRemoved(String packageName, int uid) { |
| final int userId = UserHandle.getUserId(uid); |
| if (isStarted(userId)) { |
| resetAppOpPermissionsIfNotRequestedForUid(uid); |
| } |
| } |
| }); |
| |
| permissionManagerInternal.addOnRuntimePermissionStateChangedListener( |
| this::synchronizePackagePermissionsAndAppOpsAsyncForUser); |
| |
| mAppOpsCallback = new IAppOpsCallback.Stub() { |
| public void opChanged(int op, int uid, String packageName) { |
| synchronizePackagePermissionsAndAppOpsAsyncForUser(packageName, |
| UserHandle.getUserId(uid)); |
| resetAppOpPermissionsIfNotRequestedForUidAsync(uid); |
| } |
| }; |
| |
| final ArrayList<PermissionInfo> dangerousPerms = |
| permissionManagerInternal.getAllPermissionsWithProtection( |
| PermissionInfo.PROTECTION_DANGEROUS); |
| try { |
| int numDangerousPerms = dangerousPerms.size(); |
| for (int i = 0; i < numDangerousPerms; i++) { |
| PermissionInfo perm = dangerousPerms.get(i); |
| |
| if (perm.isRuntime()) { |
| appOpsService.startWatchingMode(getSwitchOp(perm.name), null, mAppOpsCallback); |
| } |
| if (perm.isSoftRestricted()) { |
| SoftRestrictedPermissionPolicy policy = |
| SoftRestrictedPermissionPolicy.forPermission(null, null, null, |
| null, perm.name); |
| int extraAppOp = policy.getExtraAppOpCode(); |
| if (extraAppOp != OP_NONE) { |
| appOpsService.startWatchingMode(extraAppOp, null, mAppOpsCallback); |
| } |
| } |
| } |
| } catch (RemoteException doesNotHappen) { |
| Slog.wtf(LOG_TAG, "Cannot set up app-ops listener"); |
| } |
| |
| final List<PermissionInfo> appOpPermissionInfos = |
| permissionManagerInternal.getAllPermissionsWithProtectionFlags( |
| PermissionInfo.PROTECTION_FLAG_APPOP); |
| mAppOpPermissions = new ArrayList<>(); |
| final int appOpPermissionInfosSize = appOpPermissionInfos.size(); |
| for (int i = 0; i < appOpPermissionInfosSize; i++) { |
| final PermissionInfo appOpPermissionInfo = appOpPermissionInfos.get(i); |
| |
| switch (appOpPermissionInfo.name) { |
| case android.Manifest.permission.ACCESS_NOTIFICATIONS: |
| case android.Manifest.permission.MANAGE_IPSEC_TUNNELS: |
| continue; |
| case android.Manifest.permission.REQUEST_INSTALL_PACKAGES: |
| // Settings allows the user to control the app op if it's not in the default |
| // mode, regardless of whether the app has requested the permission, so we |
| // should not reset it. |
| continue; |
| default: |
| final int appOpCode = AppOpsManager.permissionToOpCode( |
| appOpPermissionInfo.name); |
| if (appOpCode != OP_NONE) { |
| mAppOpPermissions.add(appOpPermissionInfo.name); |
| try { |
| appOpsService.startWatchingMode(appOpCode, null, mAppOpsCallback); |
| } catch (RemoteException e) { |
| Slog.wtf(LOG_TAG, "Cannot set up app-ops listener", e); |
| } |
| } |
| } |
| } |
| |
| IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(Intent.ACTION_PACKAGE_ADDED); |
| intentFilter.addAction(Intent.ACTION_PACKAGE_CHANGED); |
| intentFilter.addDataScheme("package"); |
| |
| getContext().registerReceiverAsUser(new BroadcastReceiver() { |
| final List<Integer> mUserSetupUids = new ArrayList<>(200); |
| final Map<UserHandle, PermissionControllerManager> mPermControllerManagers = |
| new HashMap<>(); |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| boolean hasSetupRun = true; |
| try { |
| hasSetupRun = Settings.Secure.getInt(getContext().getContentResolver(), |
| Settings.Secure.USER_SETUP_COMPLETE) != 0; |
| } catch (Settings.SettingNotFoundException e) { |
| // Ignore error, assume setup has run |
| } |
| int uid = intent.getIntExtra(Intent.EXTRA_UID, -1); |
| // If there is no valid package for the given UID, return immediately |
| if (packageManagerInternal.getPackage(uid) == null) { |
| return; |
| } |
| |
| if (hasSetupRun) { |
| if (!mUserSetupUids.isEmpty()) { |
| synchronized (mUserSetupUids) { |
| for (int i = mUserSetupUids.size() - 1; i >= 0; i--) { |
| updateUid(mUserSetupUids.get(i)); |
| } |
| mUserSetupUids.clear(); |
| } |
| } |
| updateUid(uid); |
| } else { |
| synchronized (mUserSetupUids) { |
| if (!mUserSetupUids.contains(uid)) { |
| mUserSetupUids.add(uid); |
| } |
| } |
| } |
| } |
| |
| private void updateUid(int uid) { |
| UserHandle user = UserHandle.getUserHandleForUid(uid); |
| PermissionControllerManager manager = mPermControllerManagers.get(user); |
| if (manager == null) { |
| manager = new PermissionControllerManager( |
| getUserContext(getContext(), user), FgThread.getHandler()); |
| mPermControllerManagers.put(user, manager); |
| } |
| manager.updateUserSensitiveForApp(uid); |
| } |
| }, UserHandle.ALL, intentFilter, null, null); |
| } |
| |
| /** |
| * Get op that controls the access related to the permission. |
| * |
| * <p>Usually the permission-op relationship is 1:1 but some permissions (e.g. fine location) |
| * {@link AppOpsManager#sOpToSwitch share an op} to control the access. |
| * |
| * @param permission The permission |
| * @return The op that controls the access of the permission |
| */ |
| private static int getSwitchOp(@NonNull String permission) { |
| int op = AppOpsManager.permissionToOpCode(permission); |
| if (op == OP_NONE) { |
| return OP_NONE; |
| } |
| |
| return AppOpsManager.opToSwitch(op); |
| } |
| |
| private void synchronizePackagePermissionsAndAppOpsAsyncForUser(@NonNull String packageName, |
| @UserIdInt int changedUserId) { |
| if (isStarted(changedUserId)) { |
| synchronized (mLock) { |
| if (mIsPackageSyncsScheduled.add(new Pair<>(packageName, changedUserId))) { |
| FgThread.getHandler().sendMessage(PooledLambda.obtainMessage( |
| PermissionPolicyService |
| ::synchronizePackagePermissionsAndAppOpsForUser, |
| this, packageName, changedUserId)); |
| } else { |
| if (DEBUG) { |
| Slog.v(LOG_TAG, "sync for " + packageName + "/" + changedUserId |
| + " already scheduled"); |
| } |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void onBootPhase(int phase) { |
| if (DEBUG) Slog.i(LOG_TAG, "onBootPhase(" + phase + ")"); |
| |
| if (phase == PHASE_ACTIVITY_MANAGER_READY) { |
| final UserManagerInternal um = LocalServices.getService(UserManagerInternal.class); |
| |
| // For some users we might not receive a onStartUser, hence force one here |
| for (int userId : um.getUserIds()) { |
| if (um.isUserRunning(userId)) { |
| onStartUser(userId); |
| } |
| } |
| } |
| } |
| |
| /** |
| * @return Whether the user is started but not yet stopped |
| */ |
| private boolean isStarted(@UserIdInt int userId) { |
| synchronized (mLock) { |
| return mIsStarted.get(userId); |
| } |
| } |
| |
| @Override |
| public void onStartUser(@UserIdInt int userId) { |
| if (DEBUG) Slog.i(LOG_TAG, "onStartUser(" + userId + ")"); |
| |
| if (isStarted(userId)) { |
| return; |
| } |
| |
| grantOrUpgradeDefaultRuntimePermissionsIfNeeded(userId); |
| |
| final OnInitializedCallback callback; |
| |
| synchronized (mLock) { |
| mIsStarted.put(userId, true); |
| callback = mOnInitializedCallback; |
| } |
| |
| // Force synchronization as permissions might have changed |
| synchronizePermissionsAndAppOpsForUser(userId); |
| |
| // Tell observers we are initialized for this user. |
| if (callback != null) { |
| callback.onInitialized(userId); |
| } |
| } |
| |
| @Override |
| public void onStopUser(@UserIdInt int userId) { |
| if (DEBUG) Slog.i(LOG_TAG, "onStopUser(" + userId + ")"); |
| |
| synchronized (mLock) { |
| mIsStarted.delete(userId); |
| } |
| } |
| |
| private void grantOrUpgradeDefaultRuntimePermissionsIfNeeded(@UserIdInt int userId) { |
| if (DEBUG) Slog.i(LOG_TAG, "grantOrUpgradeDefaultPermsIfNeeded(" + userId + ")"); |
| |
| final PackageManagerInternal packageManagerInternal = |
| LocalServices.getService(PackageManagerInternal.class); |
| final PermissionManagerServiceInternal permissionManagerInternal = |
| LocalServices.getService(PermissionManagerServiceInternal.class); |
| if (packageManagerInternal.isPermissionUpgradeNeeded(userId)) { |
| if (DEBUG) Slog.i(LOG_TAG, "defaultPermsWereGrantedSinceBoot(" + userId + ")"); |
| |
| // Now call into the permission controller to apply policy around permissions |
| final AndroidFuture<Boolean> future = new AndroidFuture<>(); |
| |
| // We need to create a local manager that does not schedule work on the main |
| // there as we are on the main thread and want to block until the work is |
| // completed or we time out. |
| final PermissionControllerManager permissionControllerManager = |
| new PermissionControllerManager( |
| getUserContext(getContext(), UserHandle.of(userId)), |
| FgThread.getHandler()); |
| permissionControllerManager.grantOrUpgradeDefaultRuntimePermissions( |
| FgThread.getExecutor(), successful -> { |
| if (successful) { |
| future.complete(null); |
| } else { |
| // We are in an undefined state now, let us crash and have |
| // rescue party suggest a wipe to recover to a good one. |
| final String message = "Error granting/upgrading runtime permissions" |
| + " for user " + userId; |
| Slog.wtf(LOG_TAG, message); |
| future.completeExceptionally(new IllegalStateException(message)); |
| } |
| }); |
| try { |
| future.get(); |
| } catch (InterruptedException | ExecutionException e) { |
| throw new IllegalStateException(e); |
| } |
| |
| FgThread.getHandler().postDelayed(permissionControllerManager::updateUserSensitive, |
| USER_SENSITIVE_UPDATE_DELAY_MS); |
| |
| packageManagerInternal.updateRuntimePermissionsFingerprint(userId); |
| } |
| } |
| |
| private static @Nullable Context getUserContext(@NonNull Context context, |
| @Nullable UserHandle user) { |
| if (context.getUser().equals(user)) { |
| return context; |
| } else { |
| try { |
| return context.createPackageContextAsUser(context.getPackageName(), 0, user); |
| } catch (NameNotFoundException e) { |
| Slog.e(LOG_TAG, "Cannot create context for user " + user, e); |
| return null; |
| } |
| } |
| } |
| |
| /** |
| * Synchronize a single package. |
| */ |
| private void synchronizePackagePermissionsAndAppOpsForUser(@NonNull String packageName, |
| @UserIdInt int userId) { |
| synchronized (mLock) { |
| mIsPackageSyncsScheduled.remove(new Pair<>(packageName, userId)); |
| } |
| |
| if (DEBUG) { |
| Slog.v(LOG_TAG, |
| "synchronizePackagePermissionsAndAppOpsForUser(" + packageName + ", " |
| + userId + ")"); |
| } |
| |
| final PackageManagerInternal packageManagerInternal = LocalServices.getService( |
| PackageManagerInternal.class); |
| final PackageInfo pkg = packageManagerInternal.getPackageInfo(packageName, 0, |
| Process.SYSTEM_UID, userId); |
| if (pkg == null) { |
| return; |
| } |
| final PermissionToOpSynchroniser synchroniser = new PermissionToOpSynchroniser( |
| getUserContext(getContext(), UserHandle.of(userId))); |
| synchroniser.addPackage(pkg.packageName); |
| final String[] sharedPkgNames = packageManagerInternal.getSharedUserPackagesForPackage( |
| pkg.packageName, userId); |
| |
| for (String sharedPkgName : sharedPkgNames) { |
| final AndroidPackage sharedPkg = packageManagerInternal |
| .getPackage(sharedPkgName); |
| if (sharedPkg != null) { |
| synchroniser.addPackage(sharedPkg.getPackageName()); |
| } |
| } |
| synchroniser.syncPackages(); |
| } |
| |
| /** |
| * Synchronize all packages |
| */ |
| private void synchronizePermissionsAndAppOpsForUser(@UserIdInt int userId) { |
| if (DEBUG) Slog.i(LOG_TAG, "synchronizePermissionsAndAppOpsForUser(" + userId + ")"); |
| |
| final PackageManagerInternal packageManagerInternal = LocalServices.getService( |
| PackageManagerInternal.class); |
| final PermissionToOpSynchroniser synchronizer = new PermissionToOpSynchroniser( |
| getUserContext(getContext(), UserHandle.of(userId))); |
| packageManagerInternal.forEachPackage( |
| (pkg) -> synchronizer.addPackage(pkg.getPackageName())); |
| synchronizer.syncPackages(); |
| } |
| |
| private void resetAppOpPermissionsIfNotRequestedForUidAsync(int uid) { |
| if (isStarted(UserHandle.getUserId(uid))) { |
| synchronized (mLock) { |
| if (!mIsUidSyncScheduled.get(uid)) { |
| mIsUidSyncScheduled.put(uid, true); |
| FgThread.getHandler().sendMessage(PooledLambda.obtainMessage( |
| PermissionPolicyService::resetAppOpPermissionsIfNotRequestedForUid, |
| this, uid)); |
| } |
| } |
| } |
| } |
| |
| private void resetAppOpPermissionsIfNotRequestedForUid(int uid) { |
| synchronized (mLock) { |
| mIsUidSyncScheduled.delete(uid); |
| } |
| |
| final Context context = getContext(); |
| final PackageManager userPackageManager = getUserContext(context, |
| UserHandle.getUserHandleForUid(uid)).getPackageManager(); |
| final String[] packageNames = userPackageManager.getPackagesForUid(uid); |
| if (packageNames == null || packageNames.length == 0) { |
| return; |
| } |
| |
| final ArraySet<String> requestedPermissions = new ArraySet<>(); |
| for (String packageName : packageNames) { |
| final PackageInfo packageInfo; |
| try { |
| packageInfo = userPackageManager.getPackageInfo(packageName, GET_PERMISSIONS); |
| } catch (NameNotFoundException e) { |
| continue; |
| } |
| if (packageInfo == null || packageInfo.requestedPermissions == null) { |
| continue; |
| } |
| Collections.addAll(requestedPermissions, packageInfo.requestedPermissions); |
| } |
| |
| final AppOpsManager appOpsManager = context.getSystemService(AppOpsManager.class); |
| final AppOpsManagerInternal appOpsManagerInternal = LocalServices.getService( |
| AppOpsManagerInternal.class); |
| final int appOpPermissionsSize = mAppOpPermissions.size(); |
| for (int i = 0; i < appOpPermissionsSize; i++) { |
| final String appOpPermission = mAppOpPermissions.get(i); |
| |
| if (!requestedPermissions.contains(appOpPermission)) { |
| final int appOpCode = AppOpsManager.permissionToOpCode(appOpPermission); |
| final int defaultAppOpMode = AppOpsManager.opToDefaultMode(appOpCode); |
| for (String packageName : packageNames) { |
| final int appOpMode = appOpsManager.unsafeCheckOpRawNoThrow(appOpCode, uid, |
| packageName); |
| if (appOpMode != defaultAppOpMode) { |
| appOpsManagerInternal.setUidModeFromPermissionPolicy(appOpCode, uid, |
| defaultAppOpMode, mAppOpsCallback); |
| appOpsManagerInternal.setModeFromPermissionPolicy(appOpCode, uid, |
| packageName, defaultAppOpMode, mAppOpsCallback); |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Synchronizes permission to app ops. You *must* always sync all packages |
| * in a shared UID at the same time to ensure proper synchronization. |
| */ |
| private class PermissionToOpSynchroniser { |
| private final @NonNull Context mContext; |
| private final @NonNull PackageManager mPackageManager; |
| private final @NonNull AppOpsManager mAppOpsManager; |
| private final @NonNull AppOpsManagerInternal mAppOpsManagerInternal; |
| |
| private final @NonNull ArrayMap<String, PermissionInfo> mRuntimePermissionInfos; |
| |
| /** |
| * All ops that need to be flipped to allow. |
| * |
| * @see #syncPackages |
| */ |
| private final @NonNull ArrayList<OpToChange> mOpsToAllow = new ArrayList<>(); |
| |
| /** |
| * All ops that need to be flipped to ignore. |
| * |
| * @see #syncPackages |
| */ |
| private final @NonNull ArrayList<OpToChange> mOpsToIgnore = new ArrayList<>(); |
| |
| /** |
| * All ops that need to be flipped to ignore if not allowed. |
| * |
| * Currently, only used by soft restricted permissions logic. |
| * |
| * @see #syncPackages |
| */ |
| private final @NonNull ArrayList<OpToChange> mOpsToIgnoreIfNotAllowed = new ArrayList<>(); |
| |
| /** |
| * All ops that need to be flipped to foreground. |
| * |
| * Currently, only used by the foreground/background permissions logic. |
| * |
| * @see #syncPackages |
| */ |
| private final @NonNull ArrayList<OpToChange> mOpsToForeground = new ArrayList<>(); |
| |
| PermissionToOpSynchroniser(@NonNull Context context) { |
| mContext = context; |
| mPackageManager = context.getPackageManager(); |
| mAppOpsManager = context.getSystemService(AppOpsManager.class); |
| mAppOpsManagerInternal = LocalServices.getService(AppOpsManagerInternal.class); |
| |
| mRuntimePermissionInfos = new ArrayMap<>(); |
| PermissionManagerServiceInternal permissionManagerInternal = LocalServices.getService( |
| PermissionManagerServiceInternal.class); |
| List<PermissionInfo> permissionInfos = |
| permissionManagerInternal.getAllPermissionsWithProtection( |
| PermissionInfo.PROTECTION_DANGEROUS); |
| int permissionInfosSize = permissionInfos.size(); |
| for (int i = 0; i < permissionInfosSize; i++) { |
| PermissionInfo permissionInfo = permissionInfos.get(i); |
| mRuntimePermissionInfos.put(permissionInfo.name, permissionInfo); |
| } |
| } |
| |
| /** |
| * Set app ops that were added in {@link #addPackage}. |
| * |
| * <p>This processes ops previously added by {@link #addAppOps(PackageInfo, String)} |
| */ |
| private void syncPackages() { |
| // Remember which ops were already set. This makes sure that we always set the most |
| // permissive mode if two OpChanges are scheduled. This can e.g. happen if two |
| // permissions change the same op. See {@link #getSwitchOp}. |
| LongSparseLongArray alreadySetAppOps = new LongSparseLongArray(); |
| |
| final int allowCount = mOpsToAllow.size(); |
| for (int i = 0; i < allowCount; i++) { |
| final OpToChange op = mOpsToAllow.get(i); |
| |
| setUidModeAllowed(op.code, op.uid, op.packageName); |
| alreadySetAppOps.put(IntPair.of(op.uid, op.code), 1); |
| } |
| |
| final int foregroundCount = mOpsToForeground.size(); |
| for (int i = 0; i < foregroundCount; i++) { |
| final OpToChange op = mOpsToForeground.get(i); |
| if (alreadySetAppOps.indexOfKey(IntPair.of(op.uid, op.code)) >= 0) { |
| continue; |
| } |
| |
| setUidModeForeground(op.code, op.uid, op.packageName); |
| alreadySetAppOps.put(IntPair.of(op.uid, op.code), 1); |
| } |
| |
| final int ignoreCount = mOpsToIgnore.size(); |
| for (int i = 0; i < ignoreCount; i++) { |
| final OpToChange op = mOpsToIgnore.get(i); |
| if (alreadySetAppOps.indexOfKey(IntPair.of(op.uid, op.code)) >= 0) { |
| continue; |
| } |
| |
| setUidModeIgnored(op.code, op.uid, op.packageName); |
| alreadySetAppOps.put(IntPair.of(op.uid, op.code), 1); |
| } |
| |
| final int ignoreIfNotAllowedCount = mOpsToIgnoreIfNotAllowed.size(); |
| for (int i = 0; i < ignoreIfNotAllowedCount; i++) { |
| final OpToChange op = mOpsToIgnoreIfNotAllowed.get(i); |
| if (alreadySetAppOps.indexOfKey(IntPair.of(op.uid, op.code)) >= 0) { |
| continue; |
| } |
| |
| boolean wasSet = setUidModeIgnoredIfNotAllowed(op.code, op.uid, op.packageName); |
| if (wasSet) { |
| alreadySetAppOps.put(IntPair.of(op.uid, op.code), 1); |
| } |
| } |
| } |
| |
| /** |
| * Note: Called with the package lock held. Do <u>not</u> call into app-op manager. |
| */ |
| private void addAppOps(@NonNull PackageInfo packageInfo, @NonNull AndroidPackage pkg, |
| @NonNull String permissionName) { |
| PermissionInfo permissionInfo = mRuntimePermissionInfos.get(permissionName); |
| if (permissionInfo == null) { |
| return; |
| } |
| addPermissionAppOp(packageInfo, pkg, permissionInfo); |
| addExtraAppOp(packageInfo, pkg, permissionInfo); |
| } |
| |
| private void addPermissionAppOp(@NonNull PackageInfo packageInfo, |
| @NonNull AndroidPackage pkg, @NonNull PermissionInfo permissionInfo) { |
| if (!permissionInfo.isRuntime()) { |
| return; |
| } |
| |
| String permissionName = permissionInfo.name; |
| String packageName = packageInfo.packageName; |
| int permissionFlags = mPackageManager.getPermissionFlags(permissionName, |
| packageName, mContext.getUser()); |
| boolean isReviewRequired = (permissionFlags & FLAG_PERMISSION_REVIEW_REQUIRED) != 0; |
| if (isReviewRequired) { |
| return; |
| } |
| |
| // TODO: COARSE_LOCATION and FINE_LOCATION shares the same app op. We are solving this |
| // with switch op but once we start syncing single permission this won't work. |
| int appOpCode = getSwitchOp(permissionName); |
| if (appOpCode == OP_NONE) { |
| // Note that background permissions don't have an associated app op. |
| return; |
| } |
| |
| int appOpMode; |
| boolean shouldGrantAppOp = shouldGrantAppOp(packageInfo, pkg, permissionInfo); |
| if (shouldGrantAppOp) { |
| if (permissionInfo.backgroundPermission != null) { |
| PermissionInfo backgroundPermissionInfo = mRuntimePermissionInfos.get( |
| permissionInfo.backgroundPermission); |
| boolean shouldGrantBackgroundAppOp = backgroundPermissionInfo != null |
| && shouldGrantAppOp(packageInfo, pkg, backgroundPermissionInfo); |
| appOpMode = shouldGrantBackgroundAppOp ? MODE_ALLOWED : MODE_FOREGROUND; |
| } else { |
| appOpMode = MODE_ALLOWED; |
| } |
| } else { |
| appOpMode = MODE_IGNORED; |
| } |
| |
| int uid = packageInfo.applicationInfo.uid; |
| OpToChange opToChange = new OpToChange(uid, packageName, appOpCode); |
| switch (appOpMode) { |
| case MODE_ALLOWED: |
| mOpsToAllow.add(opToChange); |
| break; |
| case MODE_FOREGROUND: |
| mOpsToForeground.add(opToChange); |
| break; |
| case MODE_IGNORED: |
| mOpsToIgnore.add(opToChange); |
| break; |
| } |
| } |
| |
| private boolean shouldGrantAppOp(@NonNull PackageInfo packageInfo, |
| @NonNull AndroidPackage pkg, @NonNull PermissionInfo permissionInfo) { |
| String permissionName = permissionInfo.name; |
| String packageName = packageInfo.packageName; |
| boolean isGranted = mPackageManager.checkPermission(permissionName, packageName) |
| == PackageManager.PERMISSION_GRANTED; |
| if (!isGranted) { |
| return false; |
| } |
| |
| int permissionFlags = mPackageManager.getPermissionFlags(permissionName, packageName, |
| mContext.getUser()); |
| boolean isRevokedCompat = (permissionFlags & FLAG_PERMISSION_REVOKED_COMPAT) |
| == FLAG_PERMISSION_REVOKED_COMPAT; |
| if (isRevokedCompat) { |
| return false; |
| } |
| |
| if (permissionInfo.isHardRestricted()) { |
| boolean shouldApplyRestriction = |
| (permissionFlags & FLAG_PERMISSION_APPLY_RESTRICTION) |
| == FLAG_PERMISSION_APPLY_RESTRICTION; |
| return !shouldApplyRestriction; |
| } else if (permissionInfo.isSoftRestricted()) { |
| SoftRestrictedPermissionPolicy policy = |
| SoftRestrictedPermissionPolicy.forPermission(mContext, |
| packageInfo.applicationInfo, pkg, mContext.getUser(), |
| permissionName); |
| return policy.mayGrantPermission(); |
| } else { |
| return true; |
| } |
| } |
| |
| private void addExtraAppOp(@NonNull PackageInfo packageInfo, @NonNull AndroidPackage pkg, |
| @NonNull PermissionInfo permissionInfo) { |
| if (!permissionInfo.isSoftRestricted()) { |
| return; |
| } |
| |
| String permissionName = permissionInfo.name; |
| SoftRestrictedPermissionPolicy policy = |
| SoftRestrictedPermissionPolicy.forPermission(mContext, |
| packageInfo.applicationInfo, pkg, mContext.getUser(), permissionName); |
| int extraOpCode = policy.getExtraAppOpCode(); |
| if (extraOpCode == OP_NONE) { |
| return; |
| } |
| |
| int uid = packageInfo.applicationInfo.uid; |
| String packageName = packageInfo.packageName; |
| OpToChange extraOpToChange = new OpToChange(uid, packageName, extraOpCode); |
| if (policy.mayAllowExtraAppOp()) { |
| mOpsToAllow.add(extraOpToChange); |
| } else { |
| if (policy.mayDenyExtraAppOpIfGranted()) { |
| mOpsToIgnore.add(extraOpToChange); |
| } else { |
| mOpsToIgnoreIfNotAllowed.add(extraOpToChange); |
| } |
| } |
| } |
| |
| /** |
| * Add a package for {@link #syncPackages() processing} later. |
| * |
| * <p>Note: Called with the package lock held. Do <u>not</u> call into app-op manager. |
| * |
| * @param pkgName The package to add for later processing. |
| */ |
| void addPackage(@NonNull String pkgName) { |
| PackageManagerInternal pmInternal = |
| LocalServices.getService(PackageManagerInternal.class); |
| final PackageInfo pkgInfo; |
| final AndroidPackage pkg; |
| try { |
| pkgInfo = mPackageManager.getPackageInfo(pkgName, GET_PERMISSIONS); |
| pkg = pmInternal.getPackage(pkgName); |
| } catch (NameNotFoundException e) { |
| return; |
| } |
| |
| if (pkgInfo == null || pkg == null || pkgInfo.applicationInfo == null |
| || pkgInfo.requestedPermissions == null) { |
| return; |
| } |
| |
| final int uid = pkgInfo.applicationInfo.uid; |
| if (uid == Process.ROOT_UID || uid == Process.SYSTEM_UID) { |
| // Root and system server always pass permission checks, so don't touch their app |
| // ops to keep compatibility. |
| return; |
| } |
| |
| for (String permission : pkgInfo.requestedPermissions) { |
| addAppOps(pkgInfo, pkg, permission); |
| } |
| } |
| |
| private void setUidModeAllowed(int opCode, int uid, @NonNull String packageName) { |
| setUidMode(opCode, uid, MODE_ALLOWED, packageName); |
| } |
| |
| private void setUidModeForeground(int opCode, int uid, @NonNull String packageName) { |
| setUidMode(opCode, uid, MODE_FOREGROUND, packageName); |
| } |
| |
| private void setUidModeIgnored(int opCode, int uid, @NonNull String packageName) { |
| setUidMode(opCode, uid, MODE_IGNORED, packageName); |
| } |
| |
| private boolean setUidModeIgnoredIfNotAllowed(int opCode, int uid, |
| @NonNull String packageName) { |
| final int currentMode = mAppOpsManager.unsafeCheckOpRaw(AppOpsManager.opToPublicName( |
| opCode), uid, packageName); |
| if (currentMode != MODE_ALLOWED) { |
| if (currentMode != MODE_IGNORED) { |
| mAppOpsManagerInternal.setUidModeFromPermissionPolicy(opCode, uid, MODE_IGNORED, |
| mAppOpsCallback); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| private void setUidMode(int opCode, int uid, int mode, |
| @NonNull String packageName) { |
| final int oldMode = mAppOpsManager.unsafeCheckOpRaw(AppOpsManager.opToPublicName( |
| opCode), uid, packageName); |
| if (oldMode != mode) { |
| mAppOpsManagerInternal.setUidModeFromPermissionPolicy(opCode, uid, mode, |
| mAppOpsCallback); |
| final int newMode = mAppOpsManager.unsafeCheckOpRaw(AppOpsManager.opToPublicName( |
| opCode), uid, packageName); |
| if (newMode != mode) { |
| // Work around incorrectly-set package mode. It never makes sense for app ops |
| // related to runtime permissions, but can get in the way and we have to reset |
| // it. |
| mAppOpsManagerInternal.setModeFromPermissionPolicy(opCode, uid, packageName, |
| AppOpsManager.opToDefaultMode(opCode), mAppOpsCallback); |
| } |
| } |
| } |
| |
| private class OpToChange { |
| final int uid; |
| final @NonNull String packageName; |
| final int code; |
| |
| OpToChange(int uid, @NonNull String packageName, int code) { |
| this.uid = uid; |
| this.packageName = packageName; |
| this.code = code; |
| } |
| } |
| } |
| |
| private class Internal extends PermissionPolicyInternal { |
| |
| @Override |
| public boolean checkStartActivity(@NonNull Intent intent, int callingUid, |
| @Nullable String callingPackage) { |
| if (callingPackage != null && isActionRemovedForCallingPackage(intent, callingUid, |
| callingPackage)) { |
| Slog.w(LOG_TAG, "Action Removed: starting " + intent.toString() + " from " |
| + callingPackage + " (uid=" + callingUid + ")"); |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean isInitialized(int userId) { |
| return isStarted(userId); |
| } |
| |
| @Override |
| public void setOnInitializedCallback(@NonNull OnInitializedCallback callback) { |
| synchronized (mLock) { |
| mOnInitializedCallback = callback; |
| } |
| } |
| |
| /** |
| * Check if the intent action is removed for the calling package (often based on target SDK |
| * version). If the action is removed, we'll silently cancel the activity launch. |
| */ |
| private boolean isActionRemovedForCallingPackage(@NonNull Intent intent, int callingUid, |
| @NonNull String callingPackage) { |
| String action = intent.getAction(); |
| if (action == null) { |
| return false; |
| } |
| switch (action) { |
| case TelecomManager.ACTION_CHANGE_DEFAULT_DIALER: |
| case Telephony.Sms.Intents.ACTION_CHANGE_DEFAULT: { |
| ApplicationInfo applicationInfo; |
| try { |
| applicationInfo = getContext().getPackageManager().getApplicationInfoAsUser( |
| callingPackage, 0, UserHandle.getUserId(callingUid)); |
| if (applicationInfo.targetSdkVersion >= Build.VERSION_CODES.Q) { |
| // Applications targeting Q or higher should use |
| // RoleManager.createRequestRoleIntent() instead. |
| return true; |
| } |
| } catch (PackageManager.NameNotFoundException e) { |
| Slog.i(LOG_TAG, "Cannot find application info for " + callingPackage); |
| } |
| // Make sure RequestRoleActivity can know the calling package if we allow it. |
| intent.putExtra(Intent.EXTRA_CALLING_PACKAGE, callingPackage); |
| return false; |
| } |
| default: |
| return false; |
| } |
| } |
| } |
| } |
