Google Git
Sign in
android / platform / frameworks / base / 2c019628f440021c4c12105a138ebc9f42b4b11e / . / services / core / java / com / android / server / pm / permission / PermissionManagerService.java
blob: 03be8e119e03d3c9373a81dcc0900a3516f40015 [file] [log] [blame]
/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.pm.permission;
import static android.Manifest.permission.ADJUST_RUNTIME_PERMISSIONS_POLICY;
import static android.Manifest.permission.READ_EXTERNAL_STORAGE;
import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;
import static android.content.pm.PackageManager.FLAGS_PERMISSION_RESTRICTION_ANY_EXEMPT;
import static android.content.pm.PackageManager.FLAG_PERMISSION_APPLY_RESTRICTION;
import static android.content.pm.PackageManager.FLAG_PERMISSION_GRANTED_BY_DEFAULT;
import static android.content.pm.PackageManager.FLAG_PERMISSION_POLICY_FIXED;
import static android.content.pm.PackageManager.FLAG_PERMISSION_REVIEW_REQUIRED;
import static android.content.pm.PackageManager.FLAG_PERMISSION_REVOKE_ON_UPGRADE;
import static android.content.pm.PackageManager.FLAG_PERMISSION_REVOKE_WHEN_REQUESTED;
import static android.content.pm.PackageManager.FLAG_PERMISSION_SYSTEM_FIXED;
import static android.content.pm.PackageManager.FLAG_PERMISSION_USER_FIXED;
import static android.content.pm.PackageManager.FLAG_PERMISSION_USER_SET;
import static android.content.pm.PackageManager.FLAG_PERMISSION_WHITELIST_INSTALLER;
import static android.content.pm.PackageManager.FLAG_PERMISSION_WHITELIST_SYSTEM;
import static android.content.pm.PackageManager.FLAG_PERMISSION_WHITELIST_UPGRADE;
import static android.content.pm.PackageManager.MASK_PERMISSION_FLAGS_ALL;
import static android.content.pm.PackageManager.MATCH_DEBUG_TRIAGED_MISSING;
import static android.os.Trace.TRACE_TAG_PACKAGE_MANAGER;
import static android.permission.PermissionManager.KILL_APP_REASON_GIDS_CHANGED;
import static android.permission.PermissionManager.KILL_APP_REASON_PERMISSIONS_REVOKED;
import static com.android.server.pm.PackageManagerService.DEBUG_INSTALL;
import static com.android.server.pm.PackageManagerService.DEBUG_PACKAGE_SCANNING;
import static com.android.server.pm.PackageManagerService.DEBUG_PERMISSIONS;
import static com.android.server.pm.PackageManagerService.DEBUG_REMOVE;
import static com.android.server.pm.PackageManagerService.PLATFORM_PACKAGE_NAME;
import static com.android.server.pm.permission.PermissionManagerService.killUid;
import static com.android.server.pm.permission.PermissionsState.PERMISSION_OPERATION_FAILURE;
import static java.util.concurrent.TimeUnit.SECONDS;
import android.Manifest;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.UserIdInt;
import android.app.ActivityManager;
import android.app.AppOpsManager;
import android.app.ApplicationPackageManager;
import android.app.IActivityManager;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.PermissionGroupInfoFlags;
import android.content.pm.PackageManager.PermissionInfoFlags;
import android.content.pm.PackageManager.PermissionWhitelistFlags;
import android.content.pm.PackageManagerInternal;
import android.content.pm.PackageParser;
import android.content.pm.PackageParser.Package;
import android.content.pm.ParceledListSlice;
import android.content.pm.PermissionGroupInfo;
import android.content.pm.PermissionInfo;
import android.metrics.LogMaker;
import android.os.Binder;
import android.os.Build;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
import android.os.Process;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.Trace;
import android.os.UserHandle;
import android.os.UserManager;
import android.os.UserManagerInternal;
import android.os.storage.StorageManager;
import android.os.storage.StorageManagerInternal;
import android.permission.IOnPermissionsChangeListener;
import android.permission.IPermissionManager;
import android.permission.PermissionControllerManager;
import android.permission.PermissionManager;
import android.permission.PermissionManagerInternal;
import android.permission.PermissionManagerInternal.CheckPermissionDelegate;
import android.permission.PermissionManagerInternal.OnRuntimePermissionStateChangedListener;
import android.text.TextUtils;
import android.util.ArrayMap;
import android.util.ArraySet;
import android.util.DebugUtils;
import android.util.EventLog;
import android.util.IntArray;
import android.util.Log;
import android.util.Slog;
import android.util.SparseArray;
import android.util.SparseBooleanArray;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
import com.android.internal.os.RoSystemProperties;
import com.android.internal.util.ArrayUtils;
import com.android.internal.util.IntPair;
import com.android.internal.util.Preconditions;
import com.android.internal.util.function.pooled.PooledLambda;
import com.android.server.FgThread;
import com.android.server.LocalServices;
import com.android.server.ServiceThread;
import com.android.server.SystemConfig;
import com.android.server.Watchdog;
import com.android.server.pm.PackageManagerServiceUtils;
import com.android.server.pm.PackageSetting;
import com.android.server.pm.SharedUserSetting;
import com.android.server.pm.UserManagerService;
import com.android.server.pm.permission.PermissionManagerServiceInternal.DefaultBrowserProvider;
import com.android.server.pm.permission.PermissionManagerServiceInternal.DefaultDialerProvider;
import com.android.server.pm.permission.PermissionManagerServiceInternal.DefaultHomeProvider;
import com.android.server.pm.permission.PermissionManagerServiceInternal.PermissionCallback;
import com.android.server.pm.permission.PermissionsState.PermissionState;
import com.android.server.policy.SoftRestrictedPermissionPolicy;
import libcore.util.EmptyArray;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.function.Consumer;
/**
* Manages all permissions and handles permissions related tasks.
*/
public class PermissionManagerService extends IPermissionManager.Stub {
private static final String TAG = "PackageManager";
/** Permission grant: not grant the permission. */
private static final int GRANT_DENIED = 1;
/** Permission grant: grant the permission as an install permission. */
private static final int GRANT_INSTALL = 2;
/** Permission grant: grant the permission as a runtime one. */
private static final int GRANT_RUNTIME = 3;
/** Permission grant: grant as runtime a permission that was granted as an install time one. */
private static final int GRANT_UPGRADE = 4;
private static final long BACKUP_TIMEOUT_MILLIS = SECONDS.toMillis(60);
/** Cap the size of permission trees that 3rd party apps can define; in characters of text */
private static final int MAX_PERMISSION_TREE_FOOTPRINT = 32768;
/** Empty array to avoid allocations */
private static final int[] EMPTY_INT_ARRAY = new int[0];
/**
* When these flags are set, the system should not automatically modify the permission grant
* state.
*/
private static final int BLOCKING_PERMISSION_FLAGS = FLAG_PERMISSION_SYSTEM_FIXED
| FLAG_PERMISSION_POLICY_FIXED
| FLAG_PERMISSION_GRANTED_BY_DEFAULT;
/** Permission flags set by the user */
private static final int USER_PERMISSION_FLAGS = FLAG_PERMISSION_USER_SET
| FLAG_PERMISSION_USER_FIXED;
/** If the permission of the value is granted, so is the key */
private static final Map<String, String> FULLER_PERMISSION_MAP = new HashMap<>();
static {
FULLER_PERMISSION_MAP.put(Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.ACCESS_FINE_LOCATION);
FULLER_PERMISSION_MAP.put(Manifest.permission.INTERACT_ACROSS_USERS,
Manifest.permission.INTERACT_ACROSS_USERS_FULL);
}
/** Lock to protect internal data access */
private final Object mLock;
/** Internal connection to the package manager */
private final PackageManagerInternal mPackageManagerInt;
/** Internal connection to the user manager */
private final UserManagerInternal mUserManagerInt;
/** Permission controller: User space permission management */
private PermissionControllerManager mPermissionControllerManager;
/** Default permission policy to provide proper behaviour out-of-the-box */
private final DefaultPermissionGrantPolicy mDefaultPermissionGrantPolicy;
/**
* Built-in permissions. Read from system configuration files. Mapping is from
* UID to permission name.
*/
private final SparseArray<ArraySet<String>> mSystemPermissions;
/** Built-in group IDs given to all packages. Read from system configuration files. */
private final int[] mGlobalGids;
private final HandlerThread mHandlerThread;
private final Handler mHandler;
private final Context mContext;
private final MetricsLogger mMetricsLogger = new MetricsLogger();
/** Internal storage for permissions and related settings */
@GuardedBy("mLock")
private final PermissionSettings mSettings;
@GuardedBy("mLock")
private ArraySet<String> mPrivappPermissionsViolations;
@GuardedBy("mLock")
private boolean mSystemReady;
/**
* For each foreground/background permission the mapping:
* Background permission -> foreground permissions
*/
@GuardedBy("mLock")
private ArrayMap<String, List<String>> mBackgroundPermissions;
/**
* A permission backup might contain apps that are not installed. In this case we delay the
* restoration until the app is installed.
*
* <p>This array ({@code userId -> noDelayedBackupLeft}) is {@code true} for all the users where
* there is <u>no more</u> delayed backup left.
*/
@GuardedBy("mLock")
private final SparseBooleanArray mHasNoDelayedPermBackup = new SparseBooleanArray();
/** Listeners for permission state (granting and flags) changes */
@GuardedBy("mLock")
final private ArrayList<OnRuntimePermissionStateChangedListener>
mRuntimePermissionStateChangedListeners = new ArrayList<>();
@GuardedBy("mLock")
private CheckPermissionDelegate mCheckPermissionDelegate;
@GuardedBy("mLock")
private final OnPermissionChangeListeners mOnPermissionChangeListeners;
@GuardedBy("mLock")
private DefaultBrowserProvider mDefaultBrowserProvider;
@GuardedBy("mLock")
private DefaultDialerProvider mDefaultDialerProvider;
@GuardedBy("mLock")
private DefaultHomeProvider mDefaultHomeProvider;
// TODO: Take a look at the methods defined in the callback.
// The callback was initially created to support the split between permission
// manager and the package manager. However, it's started to be used for other
// purposes. It may make sense to keep as an abstraction, but, the methods
// necessary to be overridden may be different than what was initially needed
// for the split.
private PermissionCallback mDefaultPermissionCallback = new PermissionCallback() {
@Override
public void onGidsChanged(int appId, int userId) {
mHandler.post(() -> killUid(appId, userId, KILL_APP_REASON_GIDS_CHANGED));
}
@Override
public void onPermissionGranted(int uid, int userId) {
mOnPermissionChangeListeners.onPermissionsChanged(uid);
// Not critical; if this is lost, the application has to request again.
mPackageManagerInt.writeSettings(true);
}
@Override
public void onInstallPermissionGranted() {
mPackageManagerInt.writeSettings(true);
}
@Override
public void onPermissionRevoked(int uid, int userId) {
mOnPermissionChangeListeners.onPermissionsChanged(uid);
// Critical; after this call the application should never have the permission
mPackageManagerInt.writeSettings(false);
final int appId = UserHandle.getAppId(uid);
killUid(appId, userId, KILL_APP_REASON_PERMISSIONS_REVOKED);
}
@Override
public void onInstallPermissionRevoked() {
mPackageManagerInt.writeSettings(true);
}
@Override
public void onPermissionUpdated(int[] userIds, boolean sync) {
mPackageManagerInt.writePermissionSettings(userIds, !sync);
}
@Override
public void onInstallPermissionUpdated() {
mPackageManagerInt.writeSettings(true);
}
@Override
public void onPermissionRemoved() {
mPackageManagerInt.writeSettings(false);
}
public void onPermissionUpdatedNotifyListener(@UserIdInt int[] updatedUserIds, boolean sync,
int uid) {
onPermissionUpdated(updatedUserIds, sync);
mOnPermissionChangeListeners.onPermissionsChanged(uid);
}
public void onInstallPermissionUpdatedNotifyListener(int uid) {
onInstallPermissionUpdated();
mOnPermissionChangeListeners.onPermissionsChanged(uid);
}
};
PermissionManagerService(Context context,
@NonNull Object externalLock) {
mContext = context;
mLock = externalLock;
mPackageManagerInt = LocalServices.getService(PackageManagerInternal.class);
mUserManagerInt = LocalServices.getService(UserManagerInternal.class);
mSettings = new PermissionSettings(mLock);
mHandlerThread = new ServiceThread(TAG,
Process.THREAD_PRIORITY_BACKGROUND, true /*allowIo*/);
mHandlerThread.start();
mHandler = new Handler(mHandlerThread.getLooper());
Watchdog.getInstance().addThread(mHandler);
mDefaultPermissionGrantPolicy = new DefaultPermissionGrantPolicy(
context, mHandlerThread.getLooper(), this);
SystemConfig systemConfig = SystemConfig.getInstance();
mSystemPermissions = systemConfig.getSystemPermissions();
mGlobalGids = systemConfig.getGlobalGids();
mOnPermissionChangeListeners = new OnPermissionChangeListeners(FgThread.get().getLooper());
// propagate permission configuration
final ArrayMap<String, SystemConfig.PermissionEntry> permConfig =
SystemConfig.getInstance().getPermissions();
synchronized (mLock) {
for (int i=0; i<permConfig.size(); i++) {
final SystemConfig.PermissionEntry perm = permConfig.valueAt(i);
BasePermission bp = mSettings.getPermissionLocked(perm.name);
if (bp == null) {
bp = new BasePermission(perm.name, "android", BasePermission.TYPE_BUILTIN);
mSettings.putPermissionLocked(perm.name, bp);
}
if (perm.gids != null) {
bp.setGids(perm.gids, perm.perUser);
}
}
}
PermissionManagerServiceInternalImpl localService =
new PermissionManagerServiceInternalImpl();
LocalServices.addService(PermissionManagerServiceInternal.class, localService);
LocalServices.addService(PermissionManagerInternal.class, localService);
}
/**
* Creates and returns an initialized, internal service for use by other components.
* <p>
* The object returned is identical to the one returned by the LocalServices class using:
* {@code LocalServices.getService(PermissionManagerServiceInternal.class);}
* <p>
* NOTE: The external lock is temporary and should be removed. This needs to be a
* lock created by the permission manager itself.
*/
public static PermissionManagerServiceInternal create(Context context,
@NonNull Object externalLock) {
final PermissionManagerServiceInternal permMgrInt =
LocalServices.getService(PermissionManagerServiceInternal.class);
if (permMgrInt != null) {
return permMgrInt;
}
PermissionManagerService permissionService =
(PermissionManagerService) ServiceManager.getService("permissionmgr");
if (permissionService == null) {
permissionService =
new PermissionManagerService(context, externalLock);
ServiceManager.addService("permissionmgr", permissionService);
}
return LocalServices.getService(PermissionManagerServiceInternal.class);
}
/**
* This method should typically only be used when granting or revoking
* permissions, since the app may immediately restart after this call.
* <p>
* If you're doing surgery on app code/data, use {@link PackageFreezer} to
* guard your work against the app being relaunched.
*/
public static void killUid(int appId, int userId, String reason) {
final long identity = Binder.clearCallingIdentity();
try {
IActivityManager am = ActivityManager.getService();
if (am != null) {
try {
am.killUid(appId, userId, reason);
} catch (RemoteException e) {
/* ignore - same process */
}
}
} finally {
Binder.restoreCallingIdentity(identity);
}
}
@Nullable BasePermission getPermission(String permName) {
synchronized (mLock) {
return mSettings.getPermissionLocked(permName);
}
}
@Override
public String[] getAppOpPermissionPackages(String permName) {
return getAppOpPermissionPackagesInternal(permName, getCallingUid());
}
private String[] getAppOpPermissionPackagesInternal(String permName, int callingUid) {
if (mPackageManagerInt.getInstantAppPackageName(callingUid) != null) {
return null;
}
synchronized (mLock) {
final ArraySet<String> pkgs = mSettings.mAppOpPermissionPackages.get(permName);
if (pkgs == null) {
return null;
}
return pkgs.toArray(new String[pkgs.size()]);
}
}
@Override
@NonNull
public ParceledListSlice<PermissionGroupInfo> getAllPermissionGroups(
@PermissionGroupInfoFlags int flags) {
final int callingUid = getCallingUid();
if (mPackageManagerInt.getInstantAppPackageName(callingUid) != null) {
return ParceledListSlice.emptyList();
}
synchronized (mLock) {
final int n = mSettings.mPermissionGroups.size();
final ArrayList<PermissionGroupInfo> out =
new ArrayList<PermissionGroupInfo>(n);
for (PackageParser.PermissionGroup pg : mSettings.mPermissionGroups.values()) {
out.add(PackageParser.generatePermissionGroupInfo(pg, flags));
}
return new ParceledListSlice<>(out);
}
}
@Override
@Nullable
public PermissionGroupInfo getPermissionGroupInfo(String groupName,
@PermissionGroupInfoFlags int flags) {
final int callingUid = getCallingUid();
if (mPackageManagerInt.getInstantAppPackageName(callingUid) != null) {
return null;
}
synchronized (mLock) {
return PackageParser.generatePermissionGroupInfo(
mSettings.mPermissionGroups.get(groupName), flags);
}
}
@Override
@Nullable
public PermissionInfo getPermissionInfo(String permName, String packageName,
@PermissionInfoFlags int flags) {
final int callingUid = getCallingUid();
if (mPackageManagerInt.getInstantAppPackageName(callingUid) != null) {
return null;
}
synchronized (mLock) {
final BasePermission bp = mSettings.getPermissionLocked(permName);
if (bp == null) {
return null;
}
final int adjustedProtectionLevel = adjustPermissionProtectionFlagsLocked(
bp.getProtectionLevel(), packageName, callingUid);
return bp.generatePermissionInfo(adjustedProtectionLevel, flags);
}
}
@Override
@Nullable
public ParceledListSlice<PermissionInfo> queryPermissionsByGroup(String groupName,
@PermissionInfoFlags int flags) {
final int callingUid = getCallingUid();
if (mPackageManagerInt.getInstantAppPackageName(callingUid) != null) {
return null;
}
synchronized (mLock) {
if (groupName != null && !mSettings.mPermissionGroups.containsKey(groupName)) {
return null;
}
final ArrayList<PermissionInfo> out = new ArrayList<PermissionInfo>(10);
for (BasePermission bp : mSettings.mPermissions.values()) {
final PermissionInfo pi = bp.generatePermissionInfo(groupName, flags);
if (pi != null) {
out.add(pi);
}
}
return new ParceledListSlice<>(out);
}
}
@Override
public boolean addPermission(PermissionInfo info, boolean async) {
final int callingUid = getCallingUid();
if (mPackageManagerInt.getInstantAppPackageName(callingUid) != null) {
throw new SecurityException("Instant apps can't add permissions");
}
if (info.labelRes == 0 && info.nonLocalizedLabel == null) {
throw new SecurityException("Label must be specified in permission");
}
final BasePermission tree = mSettings.enforcePermissionTree(info.name, callingUid);
final boolean added;
final boolean changed;
synchronized (mLock) {
BasePermission bp = mSettings.getPermissionLocked(info.name);
added = bp == null;
int fixedLevel = PermissionInfo.fixProtectionLevel(info.protectionLevel);
if (added) {
enforcePermissionCapLocked(info, tree);
bp = new BasePermission(info.name, tree.getSourcePackageName(),
BasePermission.TYPE_DYNAMIC);
} else if (!bp.isDynamic()) {
throw new SecurityException("Not allowed to modify non-dynamic permission "
+ info.name);
}
changed = bp.addToTree(fixedLevel, info, tree);
if (added) {
mSettings.putPermissionLocked(info.name, bp);
}
}
if (changed) {
mPackageManagerInt.writeSettings(async);
}
return added;
}
@Override
public void removePermission(String permName) {
final int callingUid = getCallingUid();
if (mPackageManagerInt.getInstantAppPackageName(callingUid) != null) {
throw new SecurityException("Instant applications don't have access to this method");
}
final BasePermission tree = mSettings.enforcePermissionTree(permName, callingUid);
synchronized (mLock) {
final BasePermission bp = mSettings.getPermissionLocked(permName);
if (bp == null) {
return;
}
if (bp.isDynamic()) {
// TODO: switch this back to SecurityException
Slog.wtf(TAG, "Not allowed to modify non-dynamic permission "
+ permName);
}
mSettings.removePermissionLocked(permName);
mPackageManagerInt.writeSettings(false);
}
}
@Override
public int getPermissionFlags(String permName, String packageName, int userId) {
final int callingUid = getCallingUid();
return getPermissionFlagsInternal(permName, packageName, callingUid, userId);
}
private int getPermissionFlagsInternal(
String permName, String packageName, int callingUid, int userId) {
if (!mUserManagerInt.exists(userId)) {
return 0;
}
enforceGrantRevokeGetRuntimePermissionPermissions("getPermissionFlags");
enforceCrossUserPermission(callingUid, userId,
true, // requireFullPermission
false, // checkShell
false, // requirePermissionWhenSameUser
"getPermissionFlags");
final PackageParser.Package pkg = mPackageManagerInt.getPackage(packageName);
if (pkg == null || pkg.mExtras == null) {
return 0;
}
synchronized (mLock) {
if (mSettings.getPermissionLocked(permName) == null) {
return 0;
}
}
if (mPackageManagerInt.filterAppAccess(pkg, callingUid, userId)) {
return 0;
}
final PackageSetting ps = (PackageSetting) pkg.mExtras;
PermissionsState permissionsState = ps.getPermissionsState();
return permissionsState.getPermissionFlags(permName, userId);
}
@Override
public void updatePermissionFlags(String permName, String packageName, int flagMask,
int flagValues, boolean checkAdjustPolicyFlagPermission, int userId) {
final int callingUid = getCallingUid();
boolean overridePolicy = false;
if (callingUid != Process.SYSTEM_UID && callingUid != Process.ROOT_UID) {
long callingIdentity = Binder.clearCallingIdentity();
try {
if ((flagMask & FLAG_PERMISSION_POLICY_FIXED) != 0) {
if (checkAdjustPolicyFlagPermission) {
mContext.enforceCallingOrSelfPermission(
Manifest.permission.ADJUST_RUNTIME_PERMISSIONS_POLICY,
"Need " + Manifest.permission.ADJUST_RUNTIME_PERMISSIONS_POLICY
+ " to change policy flags");
} else if (mPackageManagerInt.getTargetSdk(callingUid)
>= Build.VERSION_CODES.Q) {
throw new IllegalArgumentException(
Manifest.permission.ADJUST_RUNTIME_PERMISSIONS_POLICY + " needs "
+ " to be checked for packages targeting "
+ Build.VERSION_CODES.Q + " or later when changing policy "
+ "flags");
}
overridePolicy = true;
}
} finally {
Binder.restoreCallingIdentity(callingIdentity);
}
}
updatePermissionFlagsInternal(
permName, packageName, flagMask, flagValues, callingUid, userId,
overridePolicy, mDefaultPermissionCallback);
}
private void updatePermissionFlagsInternal(String permName, String packageName, int flagMask,
int flagValues, int callingUid, int userId, boolean overridePolicy,
PermissionCallback callback) {
if (ApplicationPackageManager.DEBUG_TRACE_GRANTS
&& ApplicationPackageManager.shouldTraceGrant(packageName, permName, userId)) {
Log.i(TAG, "System is updating flags for "
+ permName + " for user " + userId + " "
+ DebugUtils.flagsToString(
PackageManager.class, "FLAG_PERMISSION_", flagMask)
+ " := "
+ DebugUtils.flagsToString(
PackageManager.class, "FLAG_PERMISSION_", flagValues)
+ " on behalf of uid " + callingUid
+ " " + mPackageManagerInt.getNameForUid(callingUid),
new RuntimeException());
}
if (!mUserManagerInt.exists(userId)) {
return;
}
enforceGrantRevokeRuntimePermissionPermissions("updatePermissionFlags");
enforceCrossUserPermission(callingUid, userId,
true, // requireFullPermission
true, // checkShell
false, // requirePermissionWhenSameUser
"updatePermissionFlags");
if ((flagMask & FLAG_PERMISSION_POLICY_FIXED) != 0 && !overridePolicy) {
throw new SecurityException("updatePermissionFlags requires "
+ Manifest.permission.ADJUST_RUNTIME_PERMISSIONS_POLICY);
}
// Only the system can change these flags and nothing else.
if (callingUid != Process.SYSTEM_UID) {
flagMask &= ~PackageManager.FLAG_PERMISSION_SYSTEM_FIXED;
flagValues &= ~PackageManager.FLAG_PERMISSION_SYSTEM_FIXED;
flagMask &= ~PackageManager.FLAG_PERMISSION_GRANTED_BY_DEFAULT;
flagValues &= ~PackageManager.FLAG_PERMISSION_GRANTED_BY_DEFAULT;
flagValues &= ~PackageManager.FLAG_PERMISSION_REVIEW_REQUIRED;
flagValues &= ~PackageManager.FLAG_PERMISSION_RESTRICTION_SYSTEM_EXEMPT;
flagValues &= ~PackageManager.FLAG_PERMISSION_RESTRICTION_INSTALLER_EXEMPT;
flagValues &= ~PackageManager.FLAG_PERMISSION_RESTRICTION_UPGRADE_EXEMPT;
flagValues &= ~PackageManager.FLAG_PERMISSION_APPLY_RESTRICTION;
}
final PackageParser.Package pkg = mPackageManagerInt.getPackage(packageName);
if (pkg == null || pkg.mExtras == null) {
Log.e(TAG, "Unknown package: " + packageName);
return;
}
if (mPackageManagerInt.filterAppAccess(pkg, callingUid, userId)) {
throw new IllegalArgumentException("Unknown package: " + packageName);
}
final BasePermission bp;
synchronized (mLock) {
bp = mSettings.getPermissionLocked(permName);
}
if (bp == null) {
throw new IllegalArgumentException("Unknown permission: " + permName);
}
final PackageSetting ps = (PackageSetting) pkg.mExtras;
final PermissionsState permissionsState = ps.getPermissionsState();
final boolean hadState =
permissionsState.getRuntimePermissionState(permName, userId) != null;
final boolean permissionUpdated =
permissionsState.updatePermissionFlags(bp, userId, flagMask, flagValues);
if (permissionUpdated && bp.isRuntime()) {
notifyRuntimePermissionStateChanged(packageName, userId);
}
if (permissionUpdated && callback != null) {
// Install and runtime permissions are stored in different places,
// so figure out what permission changed and persist the change.
if (permissionsState.getInstallPermissionState(permName) != null) {
callback.onInstallPermissionUpdatedNotifyListener(pkg.applicationInfo.uid);
} else if (permissionsState.getRuntimePermissionState(permName, userId) != null
|| hadState) {
callback.onPermissionUpdatedNotifyListener(new int[] { userId }, false,
pkg.applicationInfo.uid);
}
}
}
/**
* Update the permission flags for all packages and runtime permissions of a user in order
* to allow device or profile owner to remove POLICY_FIXED.
*/
@Override
public void updatePermissionFlagsForAllApps(int flagMask, int flagValues,
final int userId) {
final int callingUid = getCallingUid();
if (!mUserManagerInt.exists(userId)) {
return;
}
enforceGrantRevokeRuntimePermissionPermissions(
"updatePermissionFlagsForAllApps");
enforceCrossUserPermission(callingUid, userId,
true, // requireFullPermission
true, // checkShell
false, // requirePermissionWhenSameUser
"updatePermissionFlagsForAllApps");
// Only the system can change system fixed flags.
final int effectiveFlagMask = (callingUid != Process.SYSTEM_UID)
? flagMask : flagMask & ~PackageManager.FLAG_PERMISSION_SYSTEM_FIXED;
final int effectiveFlagValues = (callingUid != Process.SYSTEM_UID)
? flagValues : flagValues & ~PackageManager.FLAG_PERMISSION_SYSTEM_FIXED;
final boolean[] changed = new boolean[1];
mPackageManagerInt.forEachPackage(new Consumer<PackageParser.Package>() {
@Override
public void accept(Package pkg) {
final PackageSetting ps = (PackageSetting) pkg.mExtras;
if (ps == null) {
return;
}
final PermissionsState permissionsState = ps.getPermissionsState();
changed[0] |= permissionsState.updatePermissionFlagsForAllPermissions(
userId, effectiveFlagMask, effectiveFlagValues);
mOnPermissionChangeListeners.onPermissionsChanged(pkg.applicationInfo.uid);
}
});
if (changed[0]) {
mPackageManagerInt.writePermissionSettings(new int[] { userId }, true);
}
}
@Override
public int checkPermission(String permName, String pkgName, int userId) {
final CheckPermissionDelegate checkPermissionDelegate;
synchronized (mLock) {
if (mCheckPermissionDelegate == null) {
return checkPermissionImpl(permName, pkgName, userId);
}
checkPermissionDelegate = mCheckPermissionDelegate;
}
return checkPermissionDelegate.checkPermission(permName, pkgName, userId,
PermissionManagerService.this::checkPermissionImpl);
}
private int checkPermissionImpl(String permName, String pkgName, int userId) {
return checkPermissionInternal(permName, pkgName, getCallingUid(), userId);
}
private int checkPermissionInternal(String permName, String packageName, int callingUid,
int userId) {
if (!mUserManagerInt.exists(userId)) {
return PackageManager.PERMISSION_DENIED;
}
final PackageParser.Package pkg = mPackageManagerInt.getPackage(packageName);
if (pkg != null && pkg.mExtras != null) {
if (mPackageManagerInt.filterAppAccess(pkg, callingUid, userId)) {
return PackageManager.PERMISSION_DENIED;
}
final PackageSetting ps = (PackageSetting) pkg.mExtras;
final boolean instantApp = ps.getInstantApp(userId);
final PermissionsState permissionsState = ps.getPermissionsState();
if (permissionsState.hasPermission(permName, userId)) {
if (instantApp) {
synchronized (mLock) {
BasePermission bp = mSettings.getPermissionLocked(permName);
if (bp != null && bp.isInstant()) {
return PackageManager.PERMISSION_GRANTED;
}
}
} else {
return PackageManager.PERMISSION_GRANTED;
}
}
if (isImpliedPermissionGranted(permissionsState, permName, userId)) {
return PackageManager.PERMISSION_GRANTED;
}
}
return PackageManager.PERMISSION_DENIED;
}
@Override
public int checkUidPermission(String permName, int uid) {
final CheckPermissionDelegate checkPermissionDelegate;
synchronized (mLock) {
if (mCheckPermissionDelegate == null) {
return checkUidPermissionImpl(permName, uid);
}
checkPermissionDelegate = mCheckPermissionDelegate;
}
return checkPermissionDelegate.checkUidPermission(permName, uid,
PermissionManagerService.this::checkUidPermissionImpl);
}
private int checkUidPermissionImpl(@NonNull String permName, int uid) {
final PackageParser.Package pkg = mPackageManagerInt.getPackage(uid);
synchronized (mLock) {
return checkUidPermissionInternal(permName, pkg, uid, getCallingUid());
}
}
/**
* Checks whether or not the given package has been granted the specified
* permission. If the given package is {@code null}, we instead check the
* system permissions for the given UID.
*
* @see SystemConfig#getSystemPermissions()
*/
private int checkUidPermissionInternal(@NonNull String permName,
@Nullable PackageParser.Package pkg, int uid, int callingUid) {
final int callingUserId = UserHandle.getUserId(callingUid);
final boolean isCallerInstantApp =
mPackageManagerInt.getInstantAppPackageName(callingUid) != null;
final boolean isUidInstantApp =
mPackageManagerInt.getInstantAppPackageName(uid) != null;
final int userId = UserHandle.getUserId(uid);
if (!mUserManagerInt.exists(userId)) {
return PackageManager.PERMISSION_DENIED;
}
if (pkg != null) {
if (pkg.mSharedUserId != null) {
if (isCallerInstantApp) {
return PackageManager.PERMISSION_DENIED;
}
} else if (mPackageManagerInt.filterAppAccess(pkg, callingUid, callingUserId)) {
return PackageManager.PERMISSION_DENIED;
}
final PermissionsState permissionsState =
((PackageSetting) pkg.mExtras).getPermissionsState();
if (permissionsState.hasPermission(permName, userId)) {
if (isUidInstantApp) {
if (mSettings.isPermissionInstant(permName)) {
return PackageManager.PERMISSION_GRANTED;
}
} else {
return PackageManager.PERMISSION_GRANTED;
}
}
if (isImpliedPermissionGranted(permissionsState, permName, userId)) {
return PackageManager.PERMISSION_GRANTED;
}
} else {
ArraySet<String> perms = mSystemPermissions.get(uid);
if (perms != null) {
if (perms.contains(permName)) {
return PackageManager.PERMISSION_GRANTED;
}
if (FULLER_PERMISSION_MAP.containsKey(permName)
&& perms.contains(FULLER_PERMISSION_MAP.get(permName))) {
return PackageManager.PERMISSION_GRANTED;
}
}
}
return PackageManager.PERMISSION_DENIED;
}
@Override
public void addOnPermissionsChangeListener(IOnPermissionsChangeListener listener) {
mContext.enforceCallingOrSelfPermission(
Manifest.permission.OBSERVE_GRANT_REVOKE_PERMISSIONS,
"addOnPermissionsChangeListener");
synchronized (mLock) {
mOnPermissionChangeListeners.addListenerLocked(listener);
}
}
@Override
public void removeOnPermissionsChangeListener(IOnPermissionsChangeListener listener) {
if (mPackageManagerInt.getInstantAppPackageName(Binder.getCallingUid()) != null) {
throw new SecurityException("Instant applications don't have access to this method");
}
synchronized (mLock) {
mOnPermissionChangeListeners.removeListenerLocked(listener);
}
}
@Override
@Nullable public List<String> getWhitelistedRestrictedPermissions(@NonNull String packageName,
@PermissionWhitelistFlags int flags, @UserIdInt int userId) {
Preconditions.checkNotNull(packageName);
Preconditions.checkFlagsArgument(flags,
PackageManager.FLAG_PERMISSION_WHITELIST_UPGRADE
| PackageManager.FLAG_PERMISSION_WHITELIST_SYSTEM
| PackageManager.FLAG_PERMISSION_WHITELIST_INSTALLER);
Preconditions.checkArgumentNonNegative(userId, null);
if (UserHandle.getCallingUserId() != userId) {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.INTERACT_ACROSS_USERS,
"getWhitelistedRestrictedPermissions for user " + userId);
}
final PackageParser.Package pkg = mPackageManagerInt.getPackage(packageName);
if (pkg == null) {
return null;
}
final int callingUid = Binder.getCallingUid();
if (mPackageManagerInt.filterAppAccess(pkg, callingUid, UserHandle.getCallingUserId())) {
return null;
}
final boolean isCallerPrivileged = mContext.checkCallingOrSelfPermission(
Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS)
== PackageManager.PERMISSION_GRANTED;
final boolean isCallerInstallerOnRecord =
mPackageManagerInt.isCallerInstallerOfRecord(pkg, callingUid);
if ((flags & PackageManager.FLAG_PERMISSION_WHITELIST_SYSTEM) != 0
&& !isCallerPrivileged) {
throw new SecurityException("Querying system whitelist requires "
+ Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS);
}
if ((flags & (PackageManager.FLAG_PERMISSION_WHITELIST_UPGRADE
| PackageManager.FLAG_PERMISSION_WHITELIST_INSTALLER)) != 0) {
if (!isCallerPrivileged && !isCallerInstallerOnRecord) {
throw new SecurityException("Querying upgrade or installer whitelist"
+ " requires being installer on record or "
+ Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS);
}
}
final long identity = Binder.clearCallingIdentity();
try {
final PermissionsState permissionsState =
PackageManagerServiceUtils.getPermissionsState(pkg);
if (permissionsState == null) {
return null;
}
int queryFlags = 0;
if ((flags & PackageManager.FLAG_PERMISSION_WHITELIST_SYSTEM) != 0) {
queryFlags |= PackageManager.FLAG_PERMISSION_RESTRICTION_SYSTEM_EXEMPT;
}
if ((flags & PackageManager.FLAG_PERMISSION_WHITELIST_UPGRADE) != 0) {
queryFlags |= PackageManager.FLAG_PERMISSION_RESTRICTION_UPGRADE_EXEMPT;
}
if ((flags & PackageManager.FLAG_PERMISSION_WHITELIST_INSTALLER) != 0) {
queryFlags |= PackageManager.FLAG_PERMISSION_RESTRICTION_INSTALLER_EXEMPT;
}
ArrayList<String> whitelistedPermissions = null;
final int permissionCount = pkg.requestedPermissions.size();
for (int i = 0; i < permissionCount; i++) {
final String permissionName = pkg.requestedPermissions.get(i);
final int currentFlags =
permissionsState.getPermissionFlags(permissionName, userId);
if ((currentFlags & queryFlags) != 0) {
if (whitelistedPermissions == null) {
whitelistedPermissions = new ArrayList<>();
}
whitelistedPermissions.add(permissionName);
}
}
return whitelistedPermissions;
} finally {
Binder.restoreCallingIdentity(identity);
}
}
@Override
public boolean addWhitelistedRestrictedPermission(@NonNull String packageName,
@NonNull String permName, @PermissionWhitelistFlags int flags,
@UserIdInt int userId) {
// Other argument checks are done in get/setWhitelistedRestrictedPermissions
Preconditions.checkNotNull(permName);
if (!checkExistsAndEnforceCannotModifyImmutablyRestrictedPermission(permName)) {
return false;
}
List<String> permissions =
getWhitelistedRestrictedPermissions(packageName, flags, userId);
if (permissions == null) {
permissions = new ArrayList<>(1);
}
if (permissions.indexOf(permName) < 0) {
permissions.add(permName);
return setWhitelistedRestrictedPermissionsInternal(packageName, permissions,
flags, userId);
}
return false;
}
private boolean checkExistsAndEnforceCannotModifyImmutablyRestrictedPermission(
@NonNull String permName) {
synchronized (mLock) {
final BasePermission bp = mSettings.getPermissionLocked(permName);
if (bp == null) {
Slog.w(TAG, "No such permissions: " + permName);
return false;
}
if (bp.isHardOrSoftRestricted() && bp.isImmutablyRestricted()
&& mContext.checkCallingOrSelfPermission(
Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS)
!= PackageManager.PERMISSION_GRANTED) {
throw new SecurityException("Cannot modify whitelisting of an immutably "
+ "restricted permission: " + permName);
}
return true;
}
}
@Override
public boolean removeWhitelistedRestrictedPermission(@NonNull String packageName,
@NonNull String permName, @PermissionWhitelistFlags int flags,
@UserIdInt int userId) {
// Other argument checks are done in get/setWhitelistedRestrictedPermissions
Preconditions.checkNotNull(permName);
if (!checkExistsAndEnforceCannotModifyImmutablyRestrictedPermission(permName)) {
return false;
}
final List<String> permissions =
getWhitelistedRestrictedPermissions(packageName, flags, userId);
if (permissions != null && permissions.remove(permName)) {
return setWhitelistedRestrictedPermissionsInternal(packageName, permissions,
flags, userId);
}
return false;
}
private boolean setWhitelistedRestrictedPermissionsInternal(@NonNull String packageName,
@Nullable List<String> permissions, @PermissionWhitelistFlags int flags,
@UserIdInt int userId) {
Preconditions.checkNotNull(packageName);
Preconditions.checkFlagsArgument(flags,
PackageManager.FLAG_PERMISSION_WHITELIST_UPGRADE
| PackageManager.FLAG_PERMISSION_WHITELIST_SYSTEM
| PackageManager.FLAG_PERMISSION_WHITELIST_INSTALLER);
Preconditions.checkArgument(Integer.bitCount(flags) == 1);
Preconditions.checkArgumentNonNegative(userId, null);
if (UserHandle.getCallingUserId() != userId) {
mContext.enforceCallingOrSelfPermission(
Manifest.permission.INTERACT_ACROSS_USERS,
"setWhitelistedRestrictedPermissions for user " + userId);
}
final PackageParser.Package pkg = mPackageManagerInt.getPackage(packageName);
if (pkg == null) {
return false;
}
final int callingUid = Binder.getCallingUid();
if (mPackageManagerInt.filterAppAccess(pkg, callingUid, UserHandle.getCallingUserId())) {
return false;
}
final boolean isCallerPrivileged = mContext.checkCallingOrSelfPermission(
Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS)
== PackageManager.PERMISSION_GRANTED;
final boolean isCallerInstallerOnRecord =
mPackageManagerInt.isCallerInstallerOfRecord(pkg, callingUid);
if ((flags & PackageManager.FLAG_PERMISSION_WHITELIST_SYSTEM) != 0
&& !isCallerPrivileged) {
throw new SecurityException("Modifying system whitelist requires "
+ Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS);
}
if ((flags & PackageManager.FLAG_PERMISSION_WHITELIST_UPGRADE) != 0) {
if (!isCallerPrivileged && !isCallerInstallerOnRecord) {
throw new SecurityException("Modifying upgrade whitelist requires"
+ " being installer on record or "
+ Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS);
}
final List<String> whitelistedPermissions =
getWhitelistedRestrictedPermissions(pkg.packageName, flags, userId);
if (permissions == null || permissions.isEmpty()) {
if (whitelistedPermissions == null || whitelistedPermissions.isEmpty()) {
return true;
}
} else {
// Only the system can add and remove while the installer can only remove.
final int permissionCount = permissions.size();
for (int i = 0; i < permissionCount; i++) {
if ((whitelistedPermissions == null
|| !whitelistedPermissions.contains(permissions.get(i)))
&& !isCallerPrivileged) {
throw new SecurityException("Adding to upgrade whitelist requires"
+ Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS);
}
}
}
if ((flags & PackageManager.FLAG_PERMISSION_WHITELIST_INSTALLER) != 0) {
if (!isCallerPrivileged && !isCallerInstallerOnRecord) {
throw new SecurityException("Modifying installer whitelist requires"
+ " being installer on record or "
+ Manifest.permission.WHITELIST_RESTRICTED_PERMISSIONS);
}
}
}
final long identity = Binder.clearCallingIdentity();
try {
setWhitelistedRestrictedPermissionsForUser(
pkg, userId, permissions, Process.myUid(), flags, mDefaultPermissionCallback);
} finally {
Binder.restoreCallingIdentity(identity);
}
return true;
}
@Override
public void grantRuntimePermission(String packageName, String permName, final int userId) {
final int callingUid = Binder.getCallingUid();
final boolean overridePolicy =
checkUidPermission(ADJUST_RUNTIME_PERMISSIONS_POLICY, callingUid)
== PackageManager.PERMISSION_GRANTED;
grantRuntimePermissionInternal(permName, packageName, overridePolicy,
callingUid, userId, mDefaultPermissionCallback);
}
// TODO swap permission name and package name
private void grantRuntimePermissionInternal(String permName, String packageName,
boolean overridePolicy, int callingUid, final int userId, PermissionCallback callback) {
if (ApplicationPackageManager.DEBUG_TRACE_GRANTS
&& ApplicationPackageManager.shouldTraceGrant(packageName, permName, userId)) {
Log.i(TAG, "System is granting "
+ permName + " for user " + userId + " on behalf of uid " + callingUid
+ " " + mPackageManagerInt.getNameForUid(callingUid),
new RuntimeException());
}
if (!mUserManagerInt.exists(userId)) {
Log.e(TAG, "No such user:" + userId);
return;
}
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.GRANT_RUNTIME_PERMISSIONS,
"grantRuntimePermission");
enforceCrossUserPermission(callingUid, userId,
true, // requireFullPermission
true, // checkShell
false, // requirePermissionWhenSameUser
"grantRuntimePermission");
final PackageParser.Package pkg = mPackageManagerInt.getPackage(packageName);
if (pkg == null || pkg.mExtras == null) {
throw new IllegalArgumentException("Unknown package: " + packageName);
}
final BasePermission bp;
synchronized (mLock) {
bp = mSettings.getPermissionLocked(permName);
}
if (bp == null) {
throw new IllegalArgumentException("Unknown permission: " + permName);
}
if (mPackageManagerInt.filterAppAccess(pkg, callingUid, userId)) {
throw new IllegalArgumentException("Unknown package: " + packageName);
}
bp.enforceDeclaredUsedAndRuntimeOrDevelopment(pkg);
// If a permission review is required for legacy apps we represent
// their permissions as always granted runtime ones since we need
// to keep the review required permission flag per user while an
// install permission's state is shared across all users.
if (pkg.applicationInfo.targetSdkVersion < Build.VERSION_CODES.M
&& bp.isRuntime()) {
return;
}
final int uid = UserHandle.getUid(userId, pkg.applicationInfo.uid);
final PackageSetting ps = (PackageSetting) pkg.mExtras;
final PermissionsState permissionsState = ps.getPermissionsState();
final int flags = permissionsState.getPermissionFlags(permName, userId);
if ((flags & PackageManager.FLAG_PERMISSION_SYSTEM_FIXED) != 0) {
Log.e(TAG, "Cannot grant system fixed permission "
+ permName + " for package " + packageName);
return;
}
if (!overridePolicy && (flags & PackageManager.FLAG_PERMISSION_POLICY_FIXED) != 0) {
Log.e(TAG, "Cannot grant policy fixed permission "
+ permName + " for package " + packageName);
return;
}
if (bp.isHardRestricted()
&& (flags & PackageManager.FLAGS_PERMISSION_RESTRICTION_ANY_EXEMPT) == 0) {
Log.e(TAG, "Cannot grant hard restricted non-exempt permission "
+ permName + " for package " + packageName);
return;
}
if (bp.isSoftRestricted() && !SoftRestrictedPermissionPolicy.forPermission(mContext,
pkg.applicationInfo, UserHandle.of(userId), permName).canBeGranted()) {
Log.e(TAG, "Cannot grant soft restricted permission " + permName + " for package "
+ packageName);
return;
}
if (bp.isDevelopment()) {
// Development permissions must be handled specially, since they are not
// normal runtime permissions. For now they apply to all users.
if (permissionsState.grantInstallPermission(bp)
!= PERMISSION_OPERATION_FAILURE) {
if (callback != null) {
callback.onInstallPermissionGranted();
}
}
return;
}
if (ps.getInstantApp(userId) && !bp.isInstant()) {
throw new SecurityException("Cannot grant non-ephemeral permission"
+ permName + " for package " + packageName);
}
if (pkg.applicationInfo.targetSdkVersion < Build.VERSION_CODES.M) {
Slog.w(TAG, "Cannot grant runtime permission to a legacy app");
return;
}
final int result = permissionsState.grantRuntimePermission(bp, userId);
switch (result) {
case PERMISSION_OPERATION_FAILURE: {
return;
}
case PermissionsState.PERMISSION_OPERATION_SUCCESS_GIDS_CHANGED: {
if (callback != null) {
callback.onGidsChanged(UserHandle.getAppId(pkg.applicationInfo.uid), userId);
}
}
break;
}
if (bp.isRuntime()) {
logPermission(MetricsEvent.ACTION_PERMISSION_GRANTED, permName, packageName);
}
if (callback != null) {
callback.onPermissionGranted(uid, userId);
}
if (bp.isRuntime()) {
notifyRuntimePermissionStateChanged(packageName, userId);
}
// Only need to do this if user is initialized. Otherwise it's a new user
// and there are no processes running as the user yet and there's no need
// to make an expensive call to remount processes for the changed permissions.
if (READ_EXTERNAL_STORAGE.equals(permName)
|| WRITE_EXTERNAL_STORAGE.equals(permName)) {
final long token = Binder.clearCallingIdentity();
try {
if (mUserManagerInt.isUserInitialized(userId)) {
StorageManagerInternal storageManagerInternal = LocalServices.getService(
StorageManagerInternal.class);
storageManagerInternal.onExternalStoragePolicyChanged(uid, packageName);
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
}
@Override
public void revokeRuntimePermission(String packageName, String permName, int userId) {
final int callingUid = Binder.getCallingUid();
final boolean overridePolicy =
checkUidPermission(ADJUST_RUNTIME_PERMISSIONS_POLICY, callingUid)
== PackageManager.PERMISSION_GRANTED;
revokeRuntimePermissionInternal(permName, packageName, overridePolicy, callingUid, userId,
mDefaultPermissionCallback);
}
// TODO swap permission name and package name
private void revokeRuntimePermissionInternal(String permName, String packageName,
boolean overridePolicy, int callingUid, final int userId, PermissionCallback callback) {
if (ApplicationPackageManager.DEBUG_TRACE_GRANTS
&& ApplicationPackageManager.shouldTraceGrant(packageName, permName, userId)) {
Log.i(TAG, "System is revoking "
+ permName + " for user " + userId + " on behalf of uid " + callingUid
+ " " + mPackageManagerInt.getNameForUid(callingUid),
new RuntimeException());
}
if (!mUserManagerInt.exists(userId)) {
Log.e(TAG, "No such user:" + userId);
return;
}
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.REVOKE_RUNTIME_PERMISSIONS,
"revokeRuntimePermission");
enforceCrossUserPermission(callingUid, userId,
true, // requireFullPermission
true, // checkShell
false, // requirePermissionWhenSameUser
"revokeRuntimePermission");
final PackageParser.Package pkg = mPackageManagerInt.getPackage(packageName);
if (pkg == null || pkg.mExtras == null) {
throw new IllegalArgumentException("Unknown package: " + packageName);
}
if (mPackageManagerInt.filterAppAccess(pkg, callingUid, userId)) {
throw new IllegalArgumentException("Unknown package: " + packageName);
}
final BasePermission bp = mSettings.getPermissionLocked(permName);
if (bp == null) {
throw new IllegalArgumentException("Unknown permission: " + permName);
}
bp.enforceDeclaredUsedAndRuntimeOrDevelopment(pkg);
// If a permission review is required for legacy apps we represent
// their permissions as always granted runtime ones since we need
// to keep the review required permission flag per user while an
// install permission's state is shared across all users.
if (pkg.applicationInfo.targetSdkVersion < Build.VERSION_CODES.M
&& bp.isRuntime()) {
return;
}
final PackageSetting ps = (PackageSetting) pkg.mExtras;
final PermissionsState permissionsState = ps.getPermissionsState();
final int flags = permissionsState.getPermissionFlags(permName, userId);
// Only the system may revoke SYSTEM_FIXED permissions.
if ((flags & PackageManager.FLAG_PERMISSION_SYSTEM_FIXED) != 0
&& UserHandle.getCallingAppId() != Process.SYSTEM_UID) {
throw new SecurityException("Non-System UID cannot revoke system fixed permission "
+ permName + " for package " + packageName);
}
if (!overridePolicy && (flags & PackageManager.FLAG_PERMISSION_POLICY_FIXED) != 0) {
throw new SecurityException("Cannot revoke policy fixed permission "
+ permName + " for package " + packageName);
}
if (bp.isDevelopment()) {
// Development permissions must be handled specially, since they are not
// normal runtime permissions. For now they apply to all users.
if (permissionsState.revokeInstallPermission(bp)
!= PERMISSION_OPERATION_FAILURE) {
if (callback != null) {
mDefaultPermissionCallback.onInstallPermissionRevoked();
}
}
return;
}
// Permission is already revoked, no need to do anything.
if (!permissionsState.hasRuntimePermission(permName, userId)) {
return;
}
if (permissionsState.revokeRuntimePermission(bp, userId)
== PERMISSION_OPERATION_FAILURE) {
return;
}
if (bp.isRuntime()) {
logPermission(MetricsEvent.ACTION_PERMISSION_REVOKED, permName, packageName);
}
if (callback != null) {
callback.onPermissionRevoked(pkg.applicationInfo.uid, userId);
}
if (bp.isRuntime()) {
notifyRuntimePermissionStateChanged(packageName, userId);
}
}
@Override
public void resetRuntimePermissions() {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.REVOKE_RUNTIME_PERMISSIONS,
"revokeRuntimePermission");
final int callingUid = Binder.getCallingUid();
if (callingUid != Process.SYSTEM_UID && callingUid != 0) {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.INTERACT_ACROSS_USERS_FULL,
"resetRuntimePermissions");
}
updateAllPermissions(
StorageManager.UUID_PRIVATE_INTERNAL, false, mDefaultPermissionCallback);
for (final int userId : UserManagerService.getInstance().getUserIds()) {
mPackageManagerInt.forEachPackage(
(PackageParser.Package pkg) -> resetRuntimePermissionsInternal(pkg, userId));
}
}
/**
* Reverts user permission state changes (permissions and flags).
*
* @param pkg The package for which to reset.
* @param userId The device user for which to do a reset.
*/
@GuardedBy("mPackages")
private void resetRuntimePermissionsInternal(final PackageParser.Package pkg,
final int userId) {
final String packageName = pkg.packageName;
// These are flags that can change base on user actions.
final int userSettableMask = FLAG_PERMISSION_USER_SET
| FLAG_PERMISSION_USER_FIXED
| FLAG_PERMISSION_REVOKE_ON_UPGRADE
| FLAG_PERMISSION_REVIEW_REQUIRED;
final int policyOrSystemFlags = FLAG_PERMISSION_SYSTEM_FIXED
| FLAG_PERMISSION_POLICY_FIXED;
// Delay and combine non-async permission callbacks
final int permissionCount = pkg.requestedPermissions.size();
final boolean[] permissionRemoved = new boolean[1];
final ArraySet<Long> revokedPermissions = new ArraySet<>();
final IntArray syncUpdatedUsers = new IntArray(permissionCount);
final IntArray asyncUpdatedUsers = new IntArray(permissionCount);
PermissionCallback delayingPermCallback = new PermissionCallback() {
public void onGidsChanged(int appId, int userId) {
mDefaultPermissionCallback.onGidsChanged(appId, userId);
}
public void onPermissionChanged() {
mDefaultPermissionCallback.onPermissionChanged();
}
public void onPermissionGranted(int uid, int userId) {
mDefaultPermissionCallback.onPermissionGranted(uid, userId);
}
public void onInstallPermissionGranted() {
mDefaultPermissionCallback.onInstallPermissionGranted();
}
public void onPermissionRevoked(int uid, int userId) {
revokedPermissions.add(IntPair.of(uid, userId));
syncUpdatedUsers.add(userId);
}
public void onInstallPermissionRevoked() {
mDefaultPermissionCallback.onInstallPermissionRevoked();
}
public void onPermissionUpdated(int[] updatedUserIds, boolean sync) {
for (int userId : updatedUserIds) {
if (sync) {
syncUpdatedUsers.add(userId);
asyncUpdatedUsers.remove(userId);
} else {
// Don't override sync=true by sync=false
if (syncUpdatedUsers.indexOf(userId) == -1) {
asyncUpdatedUsers.add(userId);
}
}
}
}
public void onPermissionRemoved() {
permissionRemoved[0] = true;
}
public void onInstallPermissionUpdated() {
mDefaultPermissionCallback.onInstallPermissionUpdated();
}
};
final AppOpsManager appOpsManager = mContext.getSystemService(AppOpsManager.class);
for (int i = 0; i < permissionCount; i++) {
final String permName = pkg.requestedPermissions.get(i);
final BasePermission bp;
synchronized (mLock) {
bp = mSettings.getPermissionLocked(permName);
}
if (bp == null) {
continue;
}
if (bp.isRemoved()) {
continue;
}
// If shared user we just reset the state to which only this app contributed.
final String sharedUserId =
mPackageManagerInt.getSharedUserIdForPackage(pkg.packageName);
final String[] pkgNames =
mPackageManagerInt.getPackagesForSharedUserId(sharedUserId, userId);
if (pkgNames != null && pkgNames.length > 0) {
boolean used = false;
final int packageCount = pkgNames.length;
for (int j = 0; j < packageCount; j++) {
final String sharedPkgName = pkgNames[j];
final PackageParser.Package sharedPkg =
mPackageManagerInt.getPackage(sharedPkgName);
if (sharedPkg != null && !sharedPkg.packageName.equals(packageName)
&& sharedPkg.requestedPermissions.contains(permName)) {
used = true;
break;
}
}
if (used) {
continue;
}
}
final int oldFlags =
getPermissionFlagsInternal(permName, packageName, Process.SYSTEM_UID, userId);
// Always clear the user settable flags.
// If permission review is enabled and this is a legacy app, mark the
// permission as requiring a review as this is the initial state.
final int uid = mPackageManagerInt.getPackageUid(packageName, 0, userId);
final int targetSdk = mPackageManagerInt.getTargetSdk(uid);
final int flags = (targetSdk < Build.VERSION_CODES.M && bp.isRuntime())
? FLAG_PERMISSION_REVIEW_REQUIRED | FLAG_PERMISSION_REVOKE_ON_UPGRADE
: 0;
updatePermissionFlagsInternal(
permName, packageName, userSettableMask, flags, Process.SYSTEM_UID, userId,
false, delayingPermCallback);
// Below is only runtime permission handling.
if (!bp.isRuntime()) {
continue;
}
// Never clobber system or policy.
if ((oldFlags & policyOrSystemFlags) != 0) {
continue;
}
// If this permission was granted by default, make sure it is.
if ((oldFlags & FLAG_PERMISSION_GRANTED_BY_DEFAULT) != 0) {
grantRuntimePermissionInternal(permName, packageName, false,
Process.SYSTEM_UID, userId, delayingPermCallback);
// Allow app op later as we are holding mPackages
// PermissionPolicyService will handle the app op for foreground/background
// permissions.
String appOp = AppOpsManager.permissionToOp(permName);
if (appOp != null) {
mHandler.post(() -> appOpsManager.setUidMode(appOp, uid,
AppOpsManager.MODE_ALLOWED));
}
// If permission review is enabled the permissions for a legacy apps
// are represented as constantly granted runtime ones, so don't revoke.
} else if ((flags & FLAG_PERMISSION_REVIEW_REQUIRED) == 0) {
// Otherwise, reset the permission.
revokeRuntimePermissionInternal(permName, packageName, false, Process.SYSTEM_UID,
userId, delayingPermCallback);
}
}
// Execute delayed callbacks
if (permissionRemoved[0]) {
mDefaultPermissionCallback.onPermissionRemoved();
}
// Slight variation on the code in mPermissionCallback.onPermissionRevoked() as we cannot
// kill uid while holding mPackages-lock
if (!revokedPermissions.isEmpty()) {
int numRevokedPermissions = revokedPermissions.size();
for (int i = 0; i < numRevokedPermissions; i++) {
int revocationUID = IntPair.first(revokedPermissions.valueAt(i));
int revocationUserId = IntPair.second(revokedPermissions.valueAt(i));
mOnPermissionChangeListeners.onPermissionsChanged(revocationUID);
// Kill app later as we are holding mPackages
mHandler.post(() -> killUid(UserHandle.getAppId(revocationUID), revocationUserId,
KILL_APP_REASON_PERMISSIONS_REVOKED));
}
}
mPackageManagerInt.writePermissionSettings(syncUpdatedUsers.toArray(), false);
mPackageManagerInt.writePermissionSettings(asyncUpdatedUsers.toArray(), true);
}
@Override
public String getDefaultBrowser(int userId) {
final int callingUid = Binder.getCallingUid();
if (UserHandle.getUserId(callingUid) != userId) {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, null);
}
if (mPackageManagerInt.getInstantAppPackageName(callingUid) != null) {
return null;
}
synchronized (mLock) {
return mDefaultBrowserProvider == null
? null : mDefaultBrowserProvider.getDefaultBrowser(userId);
}
}
@Override
public boolean setDefaultBrowser(String packageName, int userId) {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.SET_PREFERRED_APPLICATIONS, null);
if (UserHandle.getCallingUserId() != userId) {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, null);
}
return setDefaultBrowserInternal(packageName, false, true, userId);
}
private boolean setDefaultBrowserInternal(String packageName, boolean async,
boolean doGrant, int userId) {
synchronized (mLock) {
if (userId == UserHandle.USER_ALL) {
return false;
}
if (mDefaultBrowserProvider == null) {
return false;
}
if (async) {
mDefaultBrowserProvider.setDefaultBrowserAsync(packageName, userId);
} else {
if (!mDefaultBrowserProvider.setDefaultBrowser(packageName, userId)) {
return false;
}
}
if (doGrant && packageName != null) {
mDefaultPermissionGrantPolicy
.grantDefaultPermissionsToDefaultBrowser(packageName, userId);
}
}
return true;
}
@Override
public void grantDefaultPermissionsToEnabledCarrierApps(String[] packageNames, int userId) {
final int callingUid = Binder.getCallingUid();
PackageManagerServiceUtils
.enforceSystemOrPhoneCaller("grantPermissionsToEnabledCarrierApps", callingUid);
synchronized (mLock) {
Binder.withCleanCallingIdentity(() -> mDefaultPermissionGrantPolicy
.grantDefaultPermissionsToEnabledCarrierApps(packageNames, userId));
}
}
@Override
public void grantDefaultPermissionsToEnabledImsServices(String[] packageNames, int userId) {
final int callingUid = Binder.getCallingUid();
PackageManagerServiceUtils.enforceSystemOrPhoneCaller(
"grantDefaultPermissionsToEnabledImsServices", callingUid);
synchronized (mLock) {
Binder.withCleanCallingIdentity(() -> mDefaultPermissionGrantPolicy
.grantDefaultPermissionsToEnabledImsServices(packageNames, userId));
}
}
@Override
public void grantDefaultPermissionsToEnabledTelephonyDataServices(
String[] packageNames, int userId) {
final int callingUid = Binder.getCallingUid();
PackageManagerServiceUtils.enforceSystemOrPhoneCaller(
"grantDefaultPermissionsToEnabledTelephonyDataServices", callingUid);
synchronized (mLock) {
Binder.withCleanCallingIdentity(() -> mDefaultPermissionGrantPolicy
.grantDefaultPermissionsToEnabledTelephonyDataServices(
packageNames, userId));
}
}
@Override
public void revokeDefaultPermissionsFromDisabledTelephonyDataServices(
String[] packageNames, int userId) {
final int callingUid = Binder.getCallingUid();
PackageManagerServiceUtils.enforceSystemOrPhoneCaller(
"revokeDefaultPermissionsFromDisabledTelephonyDataServices", callingUid);
synchronized (mLock) {
Binder.withCleanCallingIdentity(() -> mDefaultPermissionGrantPolicy
.revokeDefaultPermissionsFromDisabledTelephonyDataServices(
packageNames, userId));
}
}
@Override
public void grantDefaultPermissionsToActiveLuiApp(String packageName, int userId) {
final int callingUid = Binder.getCallingUid();
PackageManagerServiceUtils
.enforceSystemOrPhoneCaller("grantDefaultPermissionsToActiveLuiApp", callingUid);
synchronized (mLock) {
Binder.withCleanCallingIdentity(() -> mDefaultPermissionGrantPolicy
.grantDefaultPermissionsToActiveLuiApp(packageName, userId));
}
}
@Override
public void revokeDefaultPermissionsFromLuiApps(String[] packageNames, int userId) {
final int callingUid = Binder.getCallingUid();
PackageManagerServiceUtils
.enforceSystemOrPhoneCaller("revokeDefaultPermissionsFromLuiApps", callingUid);
synchronized (mLock) {
Binder.withCleanCallingIdentity(() -> mDefaultPermissionGrantPolicy
.revokeDefaultPermissionsFromLuiApps(packageNames, userId));
}
}
@Override
public void setPermissionEnforced(String permName, boolean enforced) {
// TODO: Now that we no longer change GID for storage, this should to away.
mContext.enforceCallingOrSelfPermission(Manifest.permission.GRANT_RUNTIME_PERMISSIONS,
"setPermissionEnforced");
if (READ_EXTERNAL_STORAGE.equals(permName)) {
mPackageManagerInt.setReadExternalStorageEnforced(enforced);
// kill any non-foreground processes so we restart them and
// grant/revoke the GID.
final IActivityManager am = ActivityManager.getService();
if (am != null) {
final long token = Binder.clearCallingIdentity();
try {
am.killProcessesBelowForeground("setPermissionEnforcement");
} catch (RemoteException e) {
} finally {
Binder.restoreCallingIdentity(token);
}
}
} else {
throw new IllegalArgumentException("No selective enforcement for " + permName);
}
}
/** @deprecated */
@Override
@Deprecated
public boolean isPermissionEnforced(String permName) {
// allow instant applications
return true;
}
@Override
public boolean shouldShowRequestPermissionRationale(String permName,
String packageName, int userId) {
final int callingUid = Binder.getCallingUid();
if (UserHandle.getCallingUserId() != userId) {
mContext.enforceCallingPermission(
android.Manifest.permission.INTERACT_ACROSS_USERS_FULL,
"canShowRequestPermissionRationale for user " + userId);
}
final int uid =
mPackageManagerInt.getPackageUid(packageName, MATCH_DEBUG_TRIAGED_MISSING, userId);
if (UserHandle.getAppId(callingUid) != UserHandle.getAppId(uid)) {
return false;
}
if (checkPermission(permName, packageName, userId)
== PackageManager.PERMISSION_GRANTED) {
return false;
}
final int flags;
final long identity = Binder.clearCallingIdentity();
try {
flags = getPermissionFlagsInternal(permName, packageName, callingUid, userId);
} finally {
Binder.restoreCallingIdentity(identity);
}
final int fixedFlags = PackageManager.FLAG_PERMISSION_SYSTEM_FIXED
| PackageManager.FLAG_PERMISSION_POLICY_FIXED
| PackageManager.FLAG_PERMISSION_USER_FIXED;
if ((flags & fixedFlags) != 0) {
return false;
}
return (flags & PackageManager.FLAG_PERMISSION_USER_SET) != 0;
}
@Override
public boolean isPermissionRevokedByPolicy(String permName, String packageName, int userId) {
if (UserHandle.getCallingUserId() != userId) {
mContext.enforceCallingPermission(
android.Manifest.permission.INTERACT_ACROSS_USERS_FULL,
"isPermissionRevokedByPolicy for user " + userId);
}
if (checkPermission(permName, packageName, userId) == PackageManager.PERMISSION_GRANTED) {
return false;
}
final int callingUid = Binder.getCallingUid();
if (mPackageManagerInt.filterAppAccess(packageName, callingUid, userId)) {
return false;
}
final long identity = Binder.clearCallingIdentity();
try {
final int flags = getPermissionFlagsInternal(permName, packageName, callingUid, userId);
return (flags & PackageManager.FLAG_PERMISSION_POLICY_FIXED) != 0;
} finally {
Binder.restoreCallingIdentity(identity);
}
}
/**
* Get the state of the runtime permissions as xml file.
*
* <p>Can not be called on main thread.
*
* @param user The user the data should be extracted for
*
* @return The state as a xml file
*/
private @Nullable byte[] backupRuntimePermissions(@NonNull UserHandle user) {
CompletableFuture<byte[]> backup = new CompletableFuture<>();
mPermissionControllerManager.getRuntimePermissionBackup(user, mContext.getMainExecutor(),
backup::complete);
try {
return backup.get(BACKUP_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS);
} catch (InterruptedException | ExecutionException | TimeoutException e) {
Slog.e(TAG, "Cannot create permission backup for " + user, e);
return null;
}
}
/**
* Restore a permission state previously backed up via {@link #backupRuntimePermissions}.
*
* <p>If not all state can be restored, the un-appliable state will be delayed and can be
* applied via {@link #restoreDelayedRuntimePermissions}.
*
* @param backup The state as an xml file
* @param user The user the data should be restored for
*/
private void restoreRuntimePermissions(@NonNull byte[] backup, @NonNull UserHandle user) {
synchronized (mLock) {
mHasNoDelayedPermBackup.delete(user.getIdentifier());
mPermissionControllerManager.restoreRuntimePermissionBackup(backup, user);
}
}
/**
* Try to apply permission backup that was previously not applied.
*
* <p>Can not be called on main thread.
*
* @param packageName The package that is newly installed
* @param user The user the package is installed for
*
* @see #restoreRuntimePermissions
*/
private void restoreDelayedRuntimePermissions(@NonNull String packageName,
@NonNull UserHandle user) {
synchronized (mLock) {
if (mHasNoDelayedPermBackup.get(user.getIdentifier(), false)) {
return;
}
mPermissionControllerManager.restoreDelayedRuntimePermissionBackup(packageName, user,
mContext.getMainExecutor(), (hasMoreBackup) -> {
if (hasMoreBackup) {
return;
}
synchronized (mLock) {
mHasNoDelayedPermBackup.put(user.getIdentifier(), true);
}
});
}
}
private void addOnRuntimePermissionStateChangedListener(@NonNull
OnRuntimePermissionStateChangedListener listener) {
synchronized (mLock) {
mRuntimePermissionStateChangedListeners.add(listener);
}
}
private void removeOnRuntimePermissionStateChangedListener(@NonNull
OnRuntimePermissionStateChangedListener listener) {
synchronized (mLock) {
mRuntimePermissionStateChangedListeners.remove(listener);
}
}
private void notifyRuntimePermissionStateChanged(@NonNull String packageName,
@UserIdInt int userId) {
FgThread.getHandler().sendMessage(PooledLambda.obtainMessage
(PermissionManagerService::doNotifyRuntimePermissionStateChanged,
PermissionManagerService.this, packageName, userId));
}
private void doNotifyRuntimePermissionStateChanged(@NonNull String packageName,
@UserIdInt int userId) {
final ArrayList<OnRuntimePermissionStateChangedListener> listeners;
synchronized (mLock) {
if (mRuntimePermissionStateChangedListeners.isEmpty()) {
return;
}
listeners = new ArrayList<>(mRuntimePermissionStateChangedListeners);
}
final int listenerCount = listeners.size();
for (int i = 0; i < listenerCount; i++) {
listeners.get(i).onRuntimePermissionStateChanged(packageName, userId);
}
}
/**
* Returns {@code true} if the permission can be implied from another granted permission.
* <p>Some permissions, such as ACCESS_FINE_LOCATION, imply other permissions,
* such as ACCESS_COURSE_LOCATION. If the caller holds an umbrella permission, give
* it access to any implied permissions.
*/
private static boolean isImpliedPermissionGranted(PermissionsState permissionsState,
String permName, int userId) {
return FULLER_PERMISSION_MAP.containsKey(permName)
&& permissionsState.hasPermission(FULLER_PERMISSION_MAP.get(permName), userId);
}
private int adjustPermissionProtectionFlagsLocked(
int protectionLevel, String packageName, int uid) {
// Signature permission flags area always reported
final int protectionLevelMasked = protectionLevel
& (PermissionInfo.PROTECTION_NORMAL
| PermissionInfo.PROTECTION_DANGEROUS
| PermissionInfo.PROTECTION_SIGNATURE);
if (protectionLevelMasked == PermissionInfo.PROTECTION_SIGNATURE) {
return protectionLevel;
}
// System sees all flags.
final int appId = UserHandle.getAppId(uid);
if (appId == Process.SYSTEM_UID || appId == Process.ROOT_UID
|| appId == Process.SHELL_UID) {
return protectionLevel;
}
// Normalize package name to handle renamed packages and static libs
final PackageParser.Package pkg = mPackageManagerInt.getPackage(packageName);
if (pkg == null) {
return protectionLevel;
}
if (pkg.applicationInfo.targetSdkVersion < Build.VERSION_CODES.O) {
return protectionLevelMasked;
}
// Apps that target O see flags for all protection levels.
final PackageSetting ps = (PackageSetting) pkg.mExtras;
if (ps == null) {
return protectionLevel;
}
if (ps.getAppId() != appId) {
return protectionLevel;
}
return protectionLevel;
}
/**
* We might auto-grant permissions if any permission of the group is already granted. Hence if
* the group of a granted permission changes we need to revoke it to avoid having permissions of
* the new group auto-granted.
*
* @param newPackage The new package that was installed
* @param oldPackage The old package that was updated
* @param allPackageNames All package names
* @param permissionCallback Callback for permission changed
*/
private void revokeRuntimePermissionsIfGroupChanged(
@NonNull PackageParser.Package newPackage,
@NonNull PackageParser.Package oldPackage,
@NonNull ArrayList<String> allPackageNames,
@NonNull PermissionCallback permissionCallback) {
final int numOldPackagePermissions = oldPackage.permissions.size();
final ArrayMap<String, String> oldPermissionNameToGroupName
= new ArrayMap<>(numOldPackagePermissions);
for (int i = 0; i < numOldPackagePermissions; i++) {
final PackageParser.Permission permission = oldPackage.permissions.get(i);
if (permission.group != null) {
oldPermissionNameToGroupName.put(permission.info.name,
permission.group.info.name);
}
}
final int callingUid = Binder.getCallingUid();
final int numNewPackagePermissions = newPackage.permissions.size();
for (int newPermissionNum = 0; newPermissionNum < numNewPackagePermissions;
newPermissionNum++) {
final PackageParser.Permission newPermission =
newPackage.permissions.get(newPermissionNum);
final int newProtection = newPermission.info.getProtection();
if ((newProtection & PermissionInfo.PROTECTION_DANGEROUS) != 0) {
final String permissionName = newPermission.info.name;
final String newPermissionGroupName =
newPermission.group == null ? null : newPermission.group.info.name;
final String oldPermissionGroupName = oldPermissionNameToGroupName.get(
permissionName);
if (newPermissionGroupName != null
&& !newPermissionGroupName.equals(oldPermissionGroupName)) {
final int[] userIds = mUserManagerInt.getUserIds();
final int numUserIds = userIds.length;
for (int userIdNum = 0; userIdNum < numUserIds; userIdNum++) {
final int userId = userIds[userIdNum];
final int numPackages = allPackageNames.size();
for (int packageNum = 0; packageNum < numPackages; packageNum++) {
final String packageName = allPackageNames.get(packageNum);
final int permissionState = checkPermissionInternal(
permissionName, packageName, UserHandle.USER_SYSTEM, userId);
if (permissionState == PackageManager.PERMISSION_GRANTED) {
EventLog.writeEvent(0x534e4554, "72710897",
newPackage.applicationInfo.uid,
"Revoking permission " + permissionName +
" from package " + packageName +
" as the group changed from " + oldPermissionGroupName +
" to " + newPermissionGroupName);
try {
revokeRuntimePermissionInternal(permissionName, packageName,
false, callingUid, userId, permissionCallback);
} catch (IllegalArgumentException e) {
Slog.e(TAG, "Could not revoke " + permissionName + " from "
+ packageName, e);
}
}
}
}
}
}
}
}
private void addAllPermissions(PackageParser.Package pkg, boolean chatty) {
final int N = pkg.permissions.size();
for (int i=0; i<N; i++) {
PackageParser.Permission p = pkg.permissions.get(i);
// Assume by default that we did not install this permission into the system.
p.info.flags &= ~PermissionInfo.FLAG_INSTALLED;
synchronized (PermissionManagerService.this.mLock) {
// Now that permission groups have a special meaning, we ignore permission
// groups for legacy apps to prevent unexpected behavior. In particular,
// permissions for one app being granted to someone just because they happen
// to be in a group defined by another app (before this had no implications).
if (pkg.applicationInfo.targetSdkVersion > Build.VERSION_CODES.LOLLIPOP_MR1) {
p.group = mSettings.mPermissionGroups.get(p.info.group);
// Warn for a permission in an unknown group.
if (DEBUG_PERMISSIONS
&& p.info.group != null && p.group == null) {
Slog.i(TAG, "Permission " + p.info.name + " from package "
+ p.info.packageName + " in an unknown group " + p.info.group);
}
}
if (p.tree) {
final BasePermission bp = BasePermission.createOrUpdate(
mSettings.getPermissionTreeLocked(p.info.name), p, pkg,
mSettings.getAllPermissionTreesLocked(), chatty);
mSettings.putPermissionTreeLocked(p.info.name, bp);
} else {
final BasePermission bp = BasePermission.createOrUpdate(
mSettings.getPermissionLocked(p.info.name),
p, pkg, mSettings.getAllPermissionTreesLocked(), chatty);
mSettings.putPermissionLocked(p.info.name, bp);
}
}
}
}
private void addAllPermissionGroups(PackageParser.Package pkg, boolean chatty) {
final int N = pkg.permissionGroups.size();
StringBuilder r = null;
for (int i=0; i<N; i++) {
final PackageParser.PermissionGroup pg = pkg.permissionGroups.get(i);
final PackageParser.PermissionGroup cur = mSettings.mPermissionGroups.get(pg.info.name);
final String curPackageName = (cur == null) ? null : cur.info.packageName;
final boolean isPackageUpdate = pg.info.packageName.equals(curPackageName);
if (cur == null || isPackageUpdate) {
mSettings.mPermissionGroups.put(pg.info.name, pg);
if (chatty && DEBUG_PACKAGE_SCANNING) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
if (isPackageUpdate) {
r.append("UPD:");
}
r.append(pg.info.name);
}
} else {
Slog.w(TAG, "Permission group " + pg.info.name + " from package "
+ pg.info.packageName + " ignored: original from "
+ cur.info.packageName);
if (chatty && DEBUG_PACKAGE_SCANNING) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append("DUP:");
r.append(pg.info.name);
}
}
}
if (r != null && DEBUG_PACKAGE_SCANNING) {
Log.d(TAG, " Permission Groups: " + r);
}
}
private void removeAllPermissions(PackageParser.Package pkg, boolean chatty) {
synchronized (mLock) {
int N = pkg.permissions.size();
StringBuilder r = null;
for (int i=0; i<N; i++) {
PackageParser.Permission p = pkg.permissions.get(i);
BasePermission bp = (BasePermission) mSettings.mPermissions.get(p.info.name);
if (bp == null) {
bp = mSettings.mPermissionTrees.get(p.info.name);
}
if (bp != null && bp.isPermission(p)) {
bp.setPermission(null);
if (DEBUG_REMOVE && chatty) {
if (r == null) {
r = new StringBuilder(256);
} else {
r.append(' ');
}
r.append(p.info.name);
}
}
if (p.isAppOp()) {
ArraySet<String> appOpPkgs =
mSettings.mAppOpPermissionPackages.get(p.info.name);
if (appOpPkgs != null) {
appOpPkgs.remove(pkg.packageName);
}
}
}
if (r != null) {
if (DEBUG_REMOVE) Log.d(TAG, " Permissions: " + r);
}
N = pkg.requestedPermissions.size();
r = null;
for (int i=0; i<N; i++) {
String perm = pkg.requestedPermissions.get(i);
if (mSettings.isPermissionAppOp(perm)) {
ArraySet<String> appOpPkgs = mSettings.mAppOpPermissionPackages.get(perm);
if (appOpPkgs != null) {
appOpPkgs.remove(pkg.packageName);
if (appOpPkgs.isEmpty()) {
mSettings.mAppOpPermissionPackages.remove(perm);
}
}
}
}
if (r != null) {
if (DEBUG_REMOVE) Log.d(TAG, " Permissions: " + r);
}
}
}
/**
* Restore the permission state for a package.
*
* <ul>
* <li>During boot the state gets restored from the disk</li>
* <li>During app update the state gets restored from the last version of the app</li>
* </ul>
*
* <p>This restores the permission state for all users.
*
* @param pkg the package the permissions belong to
* @param replace if the package is getting replaced (this might change the requested
* permissions of this package)
* @param packageOfInterest If this is the name of {@code pkg} add extra logging
* @param callback Result call back
*/
private void restorePermissionState(@NonNull PackageParser.Package pkg, boolean replace,
@Nullable String packageOfInterest, @Nullable PermissionCallback callback) {
// IMPORTANT: There are two types of permissions: install and runtime.
// Install time permissions are granted when the app is installed to
// all device users and users added in the future. Runtime permissions
// are granted at runtime explicitly to specific users. Normal and signature
// protected permissions are install time permissions. Dangerous permissions
// are install permissions if the app's target SDK is Lollipop MR1 or older,
// otherwise they are runtime permissions. This function does not manage
// runtime permissions except for the case an app targeting Lollipop MR1
// being upgraded to target a newer SDK, in which case dangerous permissions
// are transformed from install time to runtime ones.
final PackageSetting ps = (PackageSetting) pkg.mExtras;
if (ps == null) {
return;
}
final PermissionsState permissionsState = ps.getPermissionsState();
PermissionsState origPermissions = permissionsState;
final int[] currentUserIds = UserManagerService.getInstance().getUserIds();
boolean runtimePermissionsRevoked = false;
int[] updatedUserIds = EMPTY_INT_ARRAY;
boolean changedInstallPermission = false;
if (replace) {
ps.setInstallPermissionsFixed(false);
if (!ps.isSharedUser()) {
origPermissions = new PermissionsState(permissionsState);
permissionsState.reset();
} else {
// We need to know only about runtime permission changes since the
// calling code always writes the install permissions state but
// the runtime ones are written only if changed. The only cases of
// changed runtime permissions here are promotion of an install to
// runtime and revocation of a runtime from a shared user.
synchronized (mLock) {
updatedUserIds = revokeUnusedSharedUserPermissionsLocked(
ps.getSharedUser(), UserManagerService.getInstance().getUserIds());
if (!ArrayUtils.isEmpty(updatedUserIds)) {
runtimePermissionsRevoked = true;
}
}
}
}
permissionsState.setGlobalGids(mGlobalGids);
synchronized (mLock) {
ArraySet<String> newImplicitPermissions = new ArraySet<>();
final int N = pkg.requestedPermissions.size();
for (int i = 0; i < N; i++) {
final String permName = pkg.requestedPermissions.get(i);
final BasePermission bp = mSettings.getPermissionLocked(permName);
final boolean appSupportsRuntimePermissions =
pkg.applicationInfo.targetSdkVersion >= Build.VERSION_CODES.M;
String upgradedActivityRecognitionPermission = null;
if (DEBUG_INSTALL) {
Log.i(TAG, "Package " + pkg.packageName + " checking " + permName + ": " + bp);
}
if (bp == null || bp.getSourcePackageSetting() == null) {
if (packageOfInterest == null || packageOfInterest.equals(pkg.packageName)) {
if (DEBUG_PERMISSIONS) {
Slog.i(TAG, "Unknown permission " + permName
+ " in package " + pkg.packageName);
}
}
continue;
}
// Cache newImplicitPermissions before modifing permissionsState as for the shared
// uids the original and new state are the same object
if (!origPermissions.hasRequestedPermission(permName)
&& (pkg.implicitPermissions.contains(permName)
|| (permName.equals(Manifest.permission.ACTIVITY_RECOGNITION)))) {
if (pkg.implicitPermissions.contains(permName)) {
// If permName is an implicit permission, try to auto-grant
newImplicitPermissions.add(permName);
if (DEBUG_PERMISSIONS) {
Slog.i(TAG, permName + " is newly added for " + pkg.packageName);
}
} else {
// Special case for Activity Recognition permission. Even if AR permission
// is not an implicit permission we want to add it to the list (try to
// auto-grant it) if the app was installed on a device before AR permission
// was split, regardless of if the app now requests the new AR permission
// or has updated its target SDK and AR is no longer implicit to it.
// This is a compatibility workaround for apps when AR permission was
// split in Q.
int numSplitPerms = PermissionManager.SPLIT_PERMISSIONS.size();
for (int splitPermNum = 0; splitPermNum < numSplitPerms; splitPermNum++) {
PermissionManager.SplitPermissionInfo sp =
PermissionManager.SPLIT_PERMISSIONS.get(splitPermNum);
String splitPermName = sp.getSplitPermission();
if (sp.getNewPermissions().contains(permName)
&& origPermissions.hasInstallPermission(splitPermName)) {
upgradedActivityRecognitionPermission = splitPermName;
newImplicitPermissions.add(permName);
if (DEBUG_PERMISSIONS) {
Slog.i(TAG, permName + " is newly added for "
+ pkg.packageName);
}
break;
}
}
}
}
// Limit ephemeral apps to ephemeral allowed permissions.
if (pkg.applicationInfo.isInstantApp() && !bp.isInstant()) {
if (DEBUG_PERMISSIONS) {
Log.i(TAG, "Denying non-ephemeral permission " + bp.getName()
+ " for package " + pkg.packageName);
}
continue;
}
if (bp.isRuntimeOnly() && !appSupportsRuntimePermissions) {
if (DEBUG_PERMISSIONS) {
Log.i(TAG, "Denying runtime-only permission " + bp.getName()
+ " for package " + pkg.packageName);
}
continue;
}
final String perm = bp.getName();
boolean allowedSig = false;
int grant = GRANT_DENIED;
// Keep track of app op permissions.
if (bp.isAppOp()) {
mSettings.addAppOpPackage(perm, pkg.packageName);
}
if (bp.isNormal()) {
// For all apps normal permissions are install time ones.
grant = GRANT_INSTALL;
} else if (bp.isRuntime()) {
if (origPermissions.hasInstallPermission(bp.getName())
|| upgradedActivityRecognitionPermission != null) {
// Before Q we represented some runtime permissions as install permissions,
// in Q we cannot do this anymore. Hence upgrade them all.
grant = GRANT_UPGRADE;
} else {
// For modern apps keep runtime permissions unchanged.
grant = GRANT_RUNTIME;
}
} else if (bp.isSignature()) {
// For all apps signature permissions are install time ones.
allowedSig = grantSignaturePermission(perm, pkg, bp, origPermissions);
if (allowedSig) {
grant = GRANT_INSTALL;
}
}
if (DEBUG_PERMISSIONS) {
Slog.i(TAG, "Considering granting permission " + perm + " to package "
+ pkg.packageName);
}
if (grant != GRANT_DENIED) {
if (!ps.isSystem() && ps.areInstallPermissionsFixed() && !bp.isRuntime()) {
// If this is an existing, non-system package, then
// we can't add any new permissions to it. Runtime
// permissions can be added any time - they ad dynamic.
if (!allowedSig && !origPermissions.hasInstallPermission(perm)) {
// Except... if this is a permission that was added
// to the platform (note: need to only do this when
// updating the platform).
if (!isNewPlatformPermissionForPackage(perm, pkg)) {
grant = GRANT_DENIED;
}
}
}
switch (grant) {
case GRANT_INSTALL: {
// Revoke this as runtime permission to handle the case of
// a runtime permission being downgraded to an install one.
// Also in permission review mode we keep dangerous permissions
// for legacy apps
for (int userId : UserManagerService.getInstance().getUserIds()) {
if (origPermissions.getRuntimePermissionState(
perm, userId) != null) {
// Revoke the runtime permission and clear the flags.
origPermissions.revokeRuntimePermission(bp, userId);
origPermissions.updatePermissionFlags(bp, userId,
PackageManager.MASK_PERMISSION_FLAGS_ALL, 0);
// If we revoked a permission permission, we have to write.
updatedUserIds = ArrayUtils.appendInt(
updatedUserIds, userId);
}
}
// Grant an install permission.
if (permissionsState.grantInstallPermission(bp) !=
PERMISSION_OPERATION_FAILURE) {
changedInstallPermission = true;
}
} break;
case GRANT_RUNTIME: {
boolean hardRestricted = bp.isHardRestricted();
boolean softRestricted = bp.isSoftRestricted();
for (int userId : currentUserIds) {
PermissionState permState = origPermissions
.getRuntimePermissionState(perm, userId);
int flags = permState != null ? permState.getFlags() : 0;
boolean wasChanged = false;
boolean restrictionExempt =
(origPermissions.getPermissionFlags(bp.name, userId)
& FLAGS_PERMISSION_RESTRICTION_ANY_EXEMPT) != 0;
boolean restrictionApplied = (origPermissions.getPermissionFlags(
bp.name, userId) & FLAG_PERMISSION_APPLY_RESTRICTION) != 0;
if (appSupportsRuntimePermissions) {
// If hard restricted we don't allow holding it
if (hardRestricted) {
if (!restrictionExempt) {
if (permState != null && permState.isGranted()
&& permissionsState.revokeRuntimePermission(
bp, userId) != PERMISSION_OPERATION_FAILURE) {
wasChanged = true;
}
if (!restrictionApplied) {
flags |= FLAG_PERMISSION_APPLY_RESTRICTION;
wasChanged = true;
}
}
// If soft restricted we allow holding in a restricted form
} else if (softRestricted) {
// Regardless if granted set the restriction flag as it
// may affect app treatment based on this permission.
if (!restrictionExempt && !restrictionApplied) {
flags |= FLAG_PERMISSION_APPLY_RESTRICTION;
wasChanged = true;
}
}
// Remove review flag as it is not necessary anymore
if ((flags & FLAG_PERMISSION_REVIEW_REQUIRED) != 0) {
flags &= ~FLAG_PERMISSION_REVIEW_REQUIRED;
wasChanged = true;
}
if ((flags & FLAG_PERMISSION_REVOKE_ON_UPGRADE) != 0) {
flags &= ~FLAG_PERMISSION_REVOKE_ON_UPGRADE;
wasChanged = true;
// Hard restricted permissions cannot be held.
} else if (!hardRestricted || restrictionExempt) {
if (permState != null && permState.isGranted()) {
if (permissionsState.grantRuntimePermission(bp, userId)
== PERMISSION_OPERATION_FAILURE) {
wasChanged = true;
}
}
}
} else {
if (permState == null) {
// New permission
if (PLATFORM_PACKAGE_NAME.equals(
bp.getSourcePackageName())) {
if (!bp.isRemoved()) {
flags |= FLAG_PERMISSION_REVIEW_REQUIRED
| FLAG_PERMISSION_REVOKE_ON_UPGRADE;
wasChanged = true;
}
}
}
if (!permissionsState.hasRuntimePermission(bp.name, userId)
&& permissionsState.grantRuntimePermission(bp, userId)
!= PERMISSION_OPERATION_FAILURE) {
wasChanged = true;
}
// If legacy app always grant the permission but if restricted
// and not exempt take a note a restriction should be applied.
if ((hardRestricted || softRestricted)
&& !restrictionExempt && !restrictionApplied) {
flags |= FLAG_PERMISSION_APPLY_RESTRICTION;
wasChanged = true;
}
}
// If unrestricted or restriction exempt, don't apply restriction.
if (!(hardRestricted || softRestricted) || restrictionExempt) {
if (restrictionApplied) {
flags &= ~FLAG_PERMISSION_APPLY_RESTRICTION;
// Dropping restriction on a legacy app requires a review.
if (!appSupportsRuntimePermissions) {
flags |= FLAG_PERMISSION_REVIEW_REQUIRED;
}
wasChanged = true;
}
}
if (hardRestricted && !restrictionExempt
&& (flags & FLAG_PERMISSION_SYSTEM_FIXED) != 0) {
// Applying a hard restriction implies revoking it. This might
// lead to a system-fixed, revoked permission.
flags &= ~FLAG_PERMISSION_SYSTEM_FIXED;
wasChanged = true;
}
if (wasChanged) {
updatedUserIds = ArrayUtils.appendInt(updatedUserIds, userId);
}
permissionsState.updatePermissionFlags(bp, userId,
MASK_PERMISSION_FLAGS_ALL, flags);
}
} break;
case GRANT_UPGRADE: {
// Upgrade from Pre-Q to Q permission model. Make all permissions
// runtime
PermissionState permState = origPermissions
.getInstallPermissionState(perm);
int flags = (permState != null) ? permState.getFlags() : 0;
BasePermission bpToRevoke =
upgradedActivityRecognitionPermission == null
? bp : mSettings.getPermissionLocked(
upgradedActivityRecognitionPermission);
// Remove install permission
if (origPermissions.revokeInstallPermission(bpToRevoke)
!= PERMISSION_OPERATION_FAILURE) {
origPermissions.updatePermissionFlags(bpToRevoke,
UserHandle.USER_ALL,
(MASK_PERMISSION_FLAGS_ALL
& ~FLAG_PERMISSION_APPLY_RESTRICTION), 0);
changedInstallPermission = true;
}
boolean hardRestricted = bp.isHardRestricted();
boolean softRestricted = bp.isSoftRestricted();
for (int userId : currentUserIds) {
boolean wasChanged = false;
boolean restrictionExempt =
(origPermissions.getPermissionFlags(bp.name, userId)
& FLAGS_PERMISSION_RESTRICTION_ANY_EXEMPT) != 0;
boolean restrictionApplied = (origPermissions.getPermissionFlags(
bp.name, userId) & FLAG_PERMISSION_APPLY_RESTRICTION) != 0;
if (appSupportsRuntimePermissions) {
// If hard restricted we don't allow holding it
if (hardRestricted) {
if (!restrictionExempt) {
if (permState != null && permState.isGranted()
&& permissionsState.revokeRuntimePermission(
bp, userId) != PERMISSION_OPERATION_FAILURE) {
wasChanged = true;
}
if (!restrictionApplied) {
flags |= FLAG_PERMISSION_APPLY_RESTRICTION;
wasChanged = true;
}
}
// If soft restricted we allow holding in a restricted form
} else if (softRestricted) {
// Regardless if granted set the restriction flag as it
// may affect app treatment based on this permission.
if (!restrictionExempt && !restrictionApplied) {
flags |= FLAG_PERMISSION_APPLY_RESTRICTION;
wasChanged = true;
}
}
// Remove review flag as it is not necessary anymore
if ((flags & FLAG_PERMISSION_REVIEW_REQUIRED) != 0) {
flags &= ~FLAG_PERMISSION_REVIEW_REQUIRED;
wasChanged = true;
}
if ((flags & FLAG_PERMISSION_REVOKE_ON_UPGRADE) != 0) {
flags &= ~FLAG_PERMISSION_REVOKE_ON_UPGRADE;
wasChanged = true;
// Hard restricted permissions cannot be held.
} else if (!hardRestricted || restrictionExempt) {
if (permissionsState.grantRuntimePermission(bp, userId) !=
PERMISSION_OPERATION_FAILURE) {
wasChanged = true;
}
}
} else {
if (!permissionsState.hasRuntimePermission(bp.name, userId)
&& permissionsState.grantRuntimePermission(bp,
userId) != PERMISSION_OPERATION_FAILURE) {
flags |= FLAG_PERMISSION_REVIEW_REQUIRED;
wasChanged = true;
}
// If legacy app always grant the permission but if restricted
// and not exempt take a note a restriction should be applied.
if ((hardRestricted || softRestricted)
&& !restrictionExempt && !restrictionApplied) {
flags |= FLAG_PERMISSION_APPLY_RESTRICTION;
wasChanged = true;
}
}
// If unrestricted or restriction exempt, don't apply restriction.
if (!(hardRestricted || softRestricted) || restrictionExempt) {
if (restrictionApplied) {
flags &= ~FLAG_PERMISSION_APPLY_RESTRICTION;
// Dropping restriction on a legacy app requires a review.
if (!appSupportsRuntimePermissions) {
flags |= FLAG_PERMISSION_REVIEW_REQUIRED;
}
wasChanged = true;
}
}
if (wasChanged) {
updatedUserIds = ArrayUtils.appendInt(updatedUserIds, userId);
}
permissionsState.updatePermissionFlags(bp, userId,
MASK_PERMISSION_FLAGS_ALL, flags);
}
} break;
default: {
if (packageOfInterest == null
|| packageOfInterest.equals(pkg.packageName)) {
if (DEBUG_PERMISSIONS) {
Slog.i(TAG, "Not granting permission " + perm
+ " to package " + pkg.packageName
+ " because it was previously installed without");
}
}
} break;
}
} else {
if (permissionsState.revokeInstallPermission(bp) !=
PERMISSION_OPERATION_FAILURE) {
// Also drop the permission flags.
permissionsState.updatePermissionFlags(bp, UserHandle.USER_ALL,
MASK_PERMISSION_FLAGS_ALL, 0);
changedInstallPermission = true;
if (DEBUG_PERMISSIONS) {
Slog.i(TAG, "Un-granting permission " + perm
+ " from package " + pkg.packageName
+ " (protectionLevel=" + bp.getProtectionLevel()
+ " flags=0x" + Integer.toHexString(pkg.applicationInfo.flags)
+ ")");
}
} else if (bp.isAppOp()) {
// Don't print warning for app op permissions, since it is fine for them
// not to be granted, there is a UI for the user to decide.
if (DEBUG_PERMISSIONS
&& (packageOfInterest == null
|| packageOfInterest.equals(pkg.packageName))) {
Slog.i(TAG, "Not granting permission " + perm
+ " to package " + pkg.packageName
+ " (protectionLevel=" + bp.getProtectionLevel()
+ " flags=0x" + Integer.toHexString(pkg.applicationInfo.flags)
+ ")");
}
}
}
}
if ((changedInstallPermission || replace) && !ps.areInstallPermissionsFixed() &&
!ps.isSystem() || ps.isUpdatedSystem()) {
// This is the first that we have heard about this package, so the
// permissions we have now selected are fixed until explicitly
// changed.
ps.setInstallPermissionsFixed(true);
}
updatedUserIds = revokePermissionsNoLongerImplicitLocked(permissionsState, pkg,
updatedUserIds);
updatedUserIds = setInitialGrantForNewImplicitPermissionsLocked(origPermissions,
permissionsState, pkg, newImplicitPermissions, updatedUserIds);
updatedUserIds = checkIfLegacyStorageOpsNeedToBeUpdated(pkg, replace, updatedUserIds);
}
// Persist the runtime permissions state for users with changes. If permissions
// were revoked because no app in the shared user declares them we have to
// write synchronously to avoid losing runtime permissions state.
if (callback != null) {
callback.onPermissionUpdated(updatedUserIds, runtimePermissionsRevoked);
}
for (int userId : updatedUserIds) {
notifyRuntimePermissionStateChanged(pkg.packageName, userId);
}
}
/**
* Revoke permissions that are not implicit anymore and that have
* {@link PackageManager#FLAG_PERMISSION_REVOKE_WHEN_REQUESTED} set.
*
* @param ps The state of the permissions of the package
* @param pkg The package that is currently looked at
* @param updatedUserIds a list of user ids that needs to be amended if the permission state
* for a user is changed.
*
* @return The updated value of the {@code updatedUserIds} parameter
*/
private @NonNull int[] revokePermissionsNoLongerImplicitLocked(
@NonNull PermissionsState ps, @NonNull PackageParser.Package pkg,
@NonNull int[] updatedUserIds) {
String pkgName = pkg.packageName;
boolean supportsRuntimePermissions = pkg.applicationInfo.targetSdkVersion
>= Build.VERSION_CODES.M;
int[] users = UserManagerService.getInstance().getUserIds();
int numUsers = users.length;
for (int i = 0; i < numUsers; i++) {
int userId = users[i];
for (String permission : ps.getPermissions(userId)) {
if (!pkg.implicitPermissions.contains(permission)) {
if (!ps.hasInstallPermission(permission)) {
int flags = ps.getRuntimePermissionState(permission, userId).getFlags();
if ((flags & FLAG_PERMISSION_REVOKE_WHEN_REQUESTED) != 0) {
BasePermission bp = mSettings.getPermissionLocked(permission);
int flagsToRemove = FLAG_PERMISSION_REVOKE_WHEN_REQUESTED;
if ((flags & BLOCKING_PERMISSION_FLAGS) == 0
&& supportsRuntimePermissions) {
int revokeResult = ps.revokeRuntimePermission(bp, userId);
if (revokeResult != PERMISSION_OPERATION_FAILURE) {
if (DEBUG_PERMISSIONS) {
Slog.i(TAG, "Revoking runtime permission "
+ permission + " for " + pkgName
+ " as it is now requested");
}
}
flagsToRemove |= USER_PERMISSION_FLAGS;
}
ps.updatePermissionFlags(bp, userId, flagsToRemove, 0);
updatedUserIds = ArrayUtils.appendInt(updatedUserIds, userId);
}
}
}
}
}
return updatedUserIds;
}
/**
* {@code newPerm} is newly added; Inherit the state from {@code sourcePerms}.
*
* <p>A single new permission can be split off from several source permissions. In this case
* the most leniant state is inherited.
*
* <p>Warning: This does not handle foreground / background permissions
*
* @param sourcePerms The permissions to inherit from
* @param newPerm The permission to inherit to
* @param ps The permission state of the package
* @param pkg The package requesting the permissions
* @param userId The user the permission belongs to
*/
private void inheritPermissionStateToNewImplicitPermissionLocked(
@NonNull ArraySet<String> sourcePerms, @NonNull String newPerm,
@NonNull PermissionsState ps, @NonNull PackageParser.Package pkg,
@UserIdInt int userId) {
String pkgName = pkg.packageName;
boolean isGranted = false;
int flags = 0;
int numSourcePerm = sourcePerms.size();
for (int i = 0; i < numSourcePerm; i++) {
String sourcePerm = sourcePerms.valueAt(i);
if ((ps.hasRuntimePermission(sourcePerm, userId))
|| ps.hasInstallPermission(sourcePerm)) {
if (!isGranted) {
flags = 0;
}
isGranted = true;
flags |= ps.getPermissionFlags(sourcePerm, userId);
} else {
if (!isGranted) {
flags |= ps.getPermissionFlags(sourcePerm, userId);
}
}
}
if (isGranted) {
if (DEBUG_PERMISSIONS) {
Slog.i(TAG, newPerm + " inherits runtime perm grant from " + sourcePerms
+ " for " + pkgName);
}
ps.grantRuntimePermission(mSettings.getPermissionLocked(newPerm), userId);
}
// Add permission flags
ps.updatePermissionFlags(mSettings.getPermission(newPerm), userId, flags, flags);
}
/**
* When the app has requested legacy storage we might need to update
* {@link android.app.AppOpsManager#OP_LEGACY_STORAGE}. Hence force an update in
* {@link com.android.server.policy.PermissionPolicyService#synchronizePackagePermissionsAndAppOpsForUser(Context, String, int)}
*
* @param pkg The package for which the permissions are updated
* @param replace If the app is being replaced
* @param updatedUserIds The ids of the users that already changed.
*
* @return The ids of the users that are changed
*/
private @NonNull int[] checkIfLegacyStorageOpsNeedToBeUpdated(
@NonNull PackageParser.Package pkg, boolean replace, @NonNull int[] updatedUserIds) {
if (replace && pkg.applicationInfo.hasRequestedLegacyExternalStorage() && (
pkg.requestedPermissions.contains(READ_EXTERNAL_STORAGE)
|| pkg.requestedPermissions.contains(WRITE_EXTERNAL_STORAGE))) {
return UserManagerService.getInstance().getUserIds();
}
return updatedUserIds;
}
/**
* Set the state of a implicit permission that is seen for the first time.
*
* @param origPs The permission state of the package before the split
* @param ps The new permission state
* @param pkg The package the permission belongs to
* @param updatedUserIds List of users for which the permission state has already been changed
*
* @return List of users for which the permission state has been changed
*/
private @NonNull int[] setInitialGrantForNewImplicitPermissionsLocked(
@NonNull PermissionsState origPs,
@NonNull PermissionsState ps, @NonNull PackageParser.Package pkg,
@NonNull ArraySet<String> newImplicitPermissions,
@NonNull int[] updatedUserIds) {
String pkgName = pkg.packageName;
ArrayMap<String, ArraySet<String>> newToSplitPerms = new ArrayMap<>();
int numSplitPerms = PermissionManager.SPLIT_PERMISSIONS.size();
for (int splitPermNum = 0; splitPermNum < numSplitPerms; splitPermNum++) {
PermissionManager.SplitPermissionInfo spi =
PermissionManager.SPLIT_PERMISSIONS.get(splitPermNum);
List<String> newPerms = spi.getNewPermissions();
int numNewPerms = newPerms.size();
for (int newPermNum = 0; newPermNum < numNewPerms; newPermNum++) {
String newPerm = newPerms.get(newPermNum);
ArraySet<String> splitPerms = newToSplitPerms.get(newPerm);
if (splitPerms == null) {
splitPerms = new ArraySet<>();
newToSplitPerms.put(newPerm, splitPerms);
}
splitPerms.add(spi.getSplitPermission());
}
}
int numNewImplicitPerms = newImplicitPermissions.size();
for (int newImplicitPermNum = 0; newImplicitPermNum < numNewImplicitPerms;
newImplicitPermNum++) {
String newPerm = newImplicitPermissions.valueAt(newImplicitPermNum);
ArraySet<String> sourcePerms = newToSplitPerms.get(newPerm);
if (sourcePerms != null) {
if (!ps.hasInstallPermission(newPerm)) {
BasePermission bp = mSettings.getPermissionLocked(newPerm);
int[] users = UserManagerService.getInstance().getUserIds();
int numUsers = users.length;
for (int userNum = 0; userNum < numUsers; userNum++) {
int userId = users[userNum];
if (!newPerm.equals(Manifest.permission.ACTIVITY_RECOGNITION)) {
ps.updatePermissionFlags(bp, userId,
FLAG_PERMISSION_REVOKE_WHEN_REQUESTED,
FLAG_PERMISSION_REVOKE_WHEN_REQUESTED);
}
updatedUserIds = ArrayUtils.appendInt(updatedUserIds, userId);
boolean inheritsFromInstallPerm = false;
for (int sourcePermNum = 0; sourcePermNum < sourcePerms.size();
sourcePermNum++) {
if (ps.hasInstallPermission(sourcePerms.valueAt(sourcePermNum))) {
inheritsFromInstallPerm = true;
break;
}
}
if (!origPs.hasRequestedPermission(sourcePerms)
&& !inheritsFromInstallPerm) {
// Both permissions are new so nothing to inherit.
if (DEBUG_PERMISSIONS) {
Slog.i(TAG, newPerm + " does not inherit from " + sourcePerms
+ " for " + pkgName + " as split permission is also new");
}
break;
} else {
// Inherit from new install or existing runtime permissions
inheritPermissionStateToNewImplicitPermissionLocked(sourcePerms,
newPerm, ps, pkg, userId);
}
}
}
}
}
return updatedUserIds;
}
private boolean isNewPlatformPermissionForPackage(String perm, PackageParser.Package pkg) {
boolean allowed = false;
final int NP = PackageParser.NEW_PERMISSIONS.length;
for (int ip=0; ip<NP; ip++) {
final PackageParser.NewPermissionInfo npi
= PackageParser.NEW_PERMISSIONS[ip];
if (npi.name.equals(perm)
&& pkg.applicationInfo.targetSdkVersion < npi.sdkVersion) {
allowed = true;
Log.i(TAG, "Auto-granting " + perm + " to old pkg "
+ pkg.packageName);
break;
}
}
return allowed;
}
/**
* Determines whether a package is whitelisted for a particular privapp permission.
*
* <p>Does NOT check whether the package is a privapp, just whether it's whitelisted.
*
* <p>This handles parent/child apps.
*/
private boolean hasPrivappWhitelistEntry(String perm, PackageParser.Package pkg) {
ArraySet<String> wlPermissions = null;
if (pkg.isVendor()) {
wlPermissions =
SystemConfig.getInstance().getVendorPrivAppPermissions(pkg.packageName);
} else if (pkg.isProduct()) {
wlPermissions =
SystemConfig.getInstance().getProductPrivAppPermissions(pkg.packageName);
} else if (pkg.isSystemExt()) {
wlPermissions =
SystemConfig.getInstance().getSystemExtPrivAppPermissions(
pkg.packageName);
} else {
wlPermissions = SystemConfig.getInstance().getPrivAppPermissions(pkg.packageName);
}
// Let's check if this package is whitelisted...
boolean whitelisted = wlPermissions != null && wlPermissions.contains(perm);
// If it's not, we'll also tail-recurse to the parent.
return whitelisted ||
pkg.parentPackage != null && hasPrivappWhitelistEntry(perm, pkg.parentPackage);
}
private boolean grantSignaturePermission(String perm, PackageParser.Package pkg,
BasePermission bp, PermissionsState origPermissions) {
boolean oemPermission = bp.isOEM();
boolean vendorPrivilegedPermission = bp.isVendorPrivileged();
boolean privilegedPermission = bp.isPrivileged() || bp.isVendorPrivileged();
boolean privappPermissionsDisable =
RoSystemProperties.CONTROL_PRIVAPP_PERMISSIONS_DISABLE;
boolean platformPermission = PLATFORM_PACKAGE_NAME.equals(bp.getSourcePackageName());
boolean platformPackage = PLATFORM_PACKAGE_NAME.equals(pkg.packageName);
if (!privappPermissionsDisable && privilegedPermission && pkg.isPrivileged()
&& !platformPackage && platformPermission) {
if (!hasPrivappWhitelistEntry(perm, pkg)) {
// Only report violations for apps on system image
if (!mSystemReady && !pkg.isUpdatedSystemApp()) {
// it's only a reportable violation if the permission isn't explicitly denied
ArraySet<String> deniedPermissions = null;
if (pkg.isVendor()) {
deniedPermissions = SystemConfig.getInstance()
.getVendorPrivAppDenyPermissions(pkg.packageName);
} else if (pkg.isProduct()) {
deniedPermissions = SystemConfig.getInstance()
.getProductPrivAppDenyPermissions(pkg.packageName);
} else if (pkg.isSystemExt()) {
deniedPermissions = SystemConfig.getInstance()
.getSystemExtPrivAppDenyPermissions(pkg.packageName);
} else {
deniedPermissions = SystemConfig.getInstance()
.getPrivAppDenyPermissions(pkg.packageName);
}
final boolean permissionViolation =
deniedPermissions == null || !deniedPermissions.contains(perm);
if (permissionViolation) {
Slog.w(TAG, "Privileged permission " + perm + " for package "
+ pkg.packageName + " (" + pkg.codePath
+ ") not in privapp-permissions whitelist");
if (RoSystemProperties.CONTROL_PRIVAPP_PERMISSIONS_ENFORCE) {
if (mPrivappPermissionsViolations == null) {
mPrivappPermissionsViolations = new ArraySet<>();
}
mPrivappPermissionsViolations.add(
pkg.packageName + " (" + pkg.codePath + "): " + perm);
}
} else {
return false;
}
}
if (RoSystemProperties.CONTROL_PRIVAPP_PERMISSIONS_ENFORCE) {
return false;
}
}
}
final String systemPackageName = mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_SYSTEM, UserHandle.USER_SYSTEM);
final PackageParser.Package systemPackage =
mPackageManagerInt.getPackage(systemPackageName);
// check if the package is allow to use this signature permission. A package is allowed to
// use a signature permission if:
// - it has the same set of signing certificates as the source package
// - or its signing certificate was rotated from the source package's certificate
// - or its signing certificate is a previous signing certificate of the defining
// package, and the defining package still trusts the old certificate for permissions
// - or it shares the above relationships with the system package
boolean allowed =
pkg.mSigningDetails.hasAncestorOrSelf(
bp.getSourcePackageSetting().getSigningDetails())
|| bp.getSourcePackageSetting().getSigningDetails().checkCapability(
pkg.mSigningDetails,
PackageParser.SigningDetails.CertCapabilities.PERMISSION)
|| pkg.mSigningDetails.hasAncestorOrSelf(systemPackage.mSigningDetails)
|| systemPackage.mSigningDetails.checkCapability(
pkg.mSigningDetails,
PackageParser.SigningDetails.CertCapabilities.PERMISSION);
if (!allowed && (privilegedPermission || oemPermission)) {
if (pkg.isSystem()) {
// For updated system applications, a privileged/oem permission
// is granted only if it had been defined by the original application.
if (pkg.isUpdatedSystemApp()) {
final PackageParser.Package disabledPkg =
mPackageManagerInt.getDisabledSystemPackage(pkg.packageName);
final PackageSetting disabledPs =
(disabledPkg != null) ? (PackageSetting) disabledPkg.mExtras : null;
if (disabledPs != null
&& disabledPs.getPermissionsState().hasInstallPermission(perm)) {
// If the original was granted this permission, we take
// that grant decision as read and propagate it to the
// update.
if ((privilegedPermission && disabledPs.isPrivileged())
|| (oemPermission && disabledPs.isOem()
&& canGrantOemPermission(disabledPs, perm))) {
allowed = true;
}
} else {
// The system apk may have been updated with an older
// version of the one on the data partition, but which
// granted a new system permission that it didn't have
// before. In this case we do want to allow the app to
// now get the new permission if the ancestral apk is
// privileged to get it.
if (disabledPs != null && disabledPkg != null
&& isPackageRequestingPermission(disabledPkg, perm)
&& ((privilegedPermission && disabledPs.isPrivileged())
|| (oemPermission && disabledPs.isOem()
&& canGrantOemPermission(disabledPs, perm)))) {
allowed = true;
}
// Also if a privileged parent package on the system image or any of
// its children requested a privileged/oem permission, the updated child
// packages can also get the permission.
if (pkg.parentPackage != null) {
final PackageParser.Package disabledParentPkg = mPackageManagerInt
.getDisabledSystemPackage(pkg.parentPackage.packageName);
final PackageSetting disabledParentPs = (disabledParentPkg != null)
? (PackageSetting) disabledParentPkg.mExtras : null;
if (disabledParentPkg != null
&& ((privilegedPermission && disabledParentPs.isPrivileged())
|| (oemPermission && disabledParentPs.isOem()))) {
if (isPackageRequestingPermission(disabledParentPkg, perm)
&& canGrantOemPermission(disabledParentPs, perm)) {
allowed = true;
} else if (disabledParentPkg.childPackages != null) {
for (PackageParser.Package disabledChildPkg
: disabledParentPkg.childPackages) {
final PackageSetting disabledChildPs =
(disabledChildPkg != null)
? (PackageSetting) disabledChildPkg.mExtras
: null;
if (isPackageRequestingPermission(disabledChildPkg, perm)
&& canGrantOemPermission(
disabledChildPs, perm)) {
allowed = true;
break;
}
}
}
}
}
}
} else {
final PackageSetting ps = (PackageSetting) pkg.mExtras;
allowed = (privilegedPermission && pkg.isPrivileged())
|| (oemPermission && pkg.isOem()
&& canGrantOemPermission(ps, perm));
}
// In any case, don't grant a privileged permission to privileged vendor apps, if
// the permission's protectionLevel does not have the extra 'vendorPrivileged'
// flag.
if (allowed && privilegedPermission &&
!vendorPrivilegedPermission && pkg.isVendor()) {
Slog.w(TAG, "Permission " + perm + " cannot be granted to privileged vendor apk "
+ pkg.packageName + " because it isn't a 'vendorPrivileged' permission.");
allowed = false;
}
}
}
if (!allowed) {
if (!allowed
&& bp.isPre23()
&& pkg.applicationInfo.targetSdkVersion < Build.VERSION_CODES.M) {
// If this was a previously normal/dangerous permission that got moved
// to a system permission as part of the runtime permission redesign, then
// we still want to blindly grant it to old apps.
allowed = true;
}
// TODO (moltmann): The installer now shares the platforms signature. Hence it does not
// need a separate flag anymore. Hence we need to check which
// permissions are needed by the permission controller
if (!allowed && bp.isInstaller()
&& (pkg.packageName.equals(mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_INSTALLER, UserHandle.USER_SYSTEM))
|| pkg.packageName.equals(mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_PERMISSION_CONTROLLER,
UserHandle.USER_SYSTEM)))) {
// If this permission is to be granted to the system installer and
// this app is an installer, then it gets the permission.
allowed = true;
}
if (!allowed && bp.isVerifier()
&& pkg.packageName.equals(mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_VERIFIER, UserHandle.USER_SYSTEM))) {
// If this permission is to be granted to the system verifier and
// this app is a verifier, then it gets the permission.
allowed = true;
}
if (!allowed && bp.isPreInstalled()
&& pkg.isSystem()) {
// Any pre-installed system app is allowed to get this permission.
allowed = true;
}
if (!allowed && bp.isDevelopment()) {
// For development permissions, a development permission
// is granted only if it was already granted.
allowed = origPermissions.hasInstallPermission(perm);
}
if (!allowed && bp.isSetup()
&& pkg.packageName.equals(mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_SETUP_WIZARD, UserHandle.USER_SYSTEM))) {
// If this permission is to be granted to the system setup wizard and
// this app is a setup wizard, then it gets the permission.
allowed = true;
}
if (!allowed && bp.isSystemTextClassifier()
&& pkg.packageName.equals(mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_SYSTEM_TEXT_CLASSIFIER,
UserHandle.USER_SYSTEM))) {
// Special permissions for the system default text classifier.
allowed = true;
}
if (!allowed && bp.isConfigurator()
&& pkg.packageName.equals(mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_CONFIGURATOR,
UserHandle.USER_SYSTEM))) {
// Special permissions for the device configurator.
allowed = true;
}
if (!allowed && bp.isWellbeing()
&& pkg.packageName.equals(mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_WELLBEING, UserHandle.USER_SYSTEM))) {
// Special permission granted only to the OEM specified wellbeing app
allowed = true;
}
if (!allowed && bp.isDocumenter()
&& pkg.packageName.equals(mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_DOCUMENTER, UserHandle.USER_SYSTEM))) {
// If this permission is to be granted to the documenter and
// this app is the documenter, then it gets the permission.
allowed = true;
}
if (!allowed && bp.isIncidentReportApprover()
&& pkg.packageName.equals(mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_INCIDENT_REPORT_APPROVER,
UserHandle.USER_SYSTEM))) {
// If this permission is to be granted to the incident report approver and
// this app is the incident report approver, then it gets the permission.
allowed = true;
}
if (!allowed && bp.isAppPredictor()
&& pkg.packageName.equals(mPackageManagerInt.getKnownPackageName(
PackageManagerInternal.PACKAGE_APP_PREDICTOR, UserHandle.USER_SYSTEM))) {
// Special permissions for the system app predictor.
allowed = true;
}
}
return allowed;
}
private static boolean canGrantOemPermission(PackageSetting ps, String permission) {
if (!ps.isOem()) {
return false;
}
// all oem permissions must explicitly be granted or denied
final Boolean granted =
SystemConfig.getInstance().getOemPermissions(ps.name).get(permission);
if (granted == null) {
throw new IllegalStateException("OEM permission" + permission + " requested by package "
+ ps.name + " must be explicitly declared granted or not");
}
return Boolean.TRUE == granted;
}
private boolean isPermissionsReviewRequired(@NonNull PackageParser.Package pkg,
@UserIdInt int userId) {
// Permission review applies only to apps not supporting the new permission model.
if (pkg.applicationInfo.targetSdkVersion >= Build.VERSION_CODES.M) {
return false;
}
// Legacy apps have the permission and get user consent on launch.
if (pkg.mExtras == null) {
return false;
}
final PackageSetting ps = (PackageSetting) pkg.mExtras;
final PermissionsState permissionsState = ps.getPermissionsState();
return permissionsState.isPermissionReviewRequired(userId);
}
private boolean isPackageRequestingPermission(PackageParser.Package pkg, String permission) {
final int permCount = pkg.requestedPermissions.size();
for (int j = 0; j < permCount; j++) {
String requestedPermission = pkg.requestedPermissions.get(j);
if (permission.equals(requestedPermission)) {
return true;
}
}
return false;
}
@GuardedBy("mLock")
private void grantRuntimePermissionsGrantedToDisabledPackageLocked(
PackageParser.Package pkg, int callingUid, PermissionCallback callback) {
if (pkg.parentPackage == null) {
return;
}
if (pkg.requestedPermissions == null) {
return;
}
final PackageParser.Package disabledPkg =
mPackageManagerInt.getDisabledSystemPackage(pkg.parentPackage.packageName);
if (disabledPkg == null || disabledPkg.mExtras == null) {
return;
}
final PackageSetting disabledPs = (PackageSetting) disabledPkg.mExtras;
if (!disabledPs.isPrivileged() || disabledPs.hasChildPackages()) {
return;
}
final int permCount = pkg.requestedPermissions.size();
for (int i = 0; i < permCount; i++) {
String permission = pkg.requestedPermissions.get(i);
BasePermission bp = mSettings.getPermissionLocked(permission);
if (bp == null || !(bp.isRuntime() || bp.isDevelopment())) {
continue;
}
for (int userId : mUserManagerInt.getUserIds()) {
if (disabledPs.getPermissionsState().hasRuntimePermission(permission, userId)) {
grantRuntimePermissionInternal(
permission, pkg.packageName, false, callingUid, userId, callback);
}
}
}
}
private void grantRequestedRuntimePermissions(PackageParser.Package pkg, int[] userIds,
String[] grantedPermissions, int callingUid, PermissionCallback callback) {
for (int userId : userIds) {
grantRequestedRuntimePermissionsForUser(pkg, userId, grantedPermissions, callingUid,
callback);
}
}
private void grantRequestedRuntimePermissionsForUser(PackageParser.Package pkg, int userId,
String[] grantedPermissions, int callingUid, PermissionCallback callback) {
PackageSetting ps = (PackageSetting) pkg.mExtras;
if (ps == null) {
return;
}
PermissionsState permissionsState = ps.getPermissionsState();
final int immutableFlags = PackageManager.FLAG_PERMISSION_SYSTEM_FIXED
| PackageManager.FLAG_PERMISSION_POLICY_FIXED;
final boolean supportsRuntimePermissions = pkg.applicationInfo.targetSdkVersion
>= Build.VERSION_CODES.M;
final boolean instantApp = mPackageManagerInt.isInstantApp(pkg.packageName, userId);
for (String permission : pkg.requestedPermissions) {
final BasePermission bp;
synchronized (mLock) {
bp = mSettings.getPermissionLocked(permission);
}
if (bp != null && (bp.isRuntime() || bp.isDevelopment())
&& (!instantApp || bp.isInstant())
&& (supportsRuntimePermissions || !bp.isRuntimeOnly())
&& (grantedPermissions == null
|| ArrayUtils.contains(grantedPermissions, permission))) {
final int flags = permissionsState.getPermissionFlags(permission, userId);
if (supportsRuntimePermissions) {
// Installer cannot change immutable permissions.
if ((flags & immutableFlags) == 0) {
grantRuntimePermissionInternal(permission, pkg.packageName, false,
callingUid, userId, callback);
}
} else {
// In permission review mode we clear the review flag when we
// are asked to install the app with all permissions granted.
if ((flags & PackageManager.FLAG_PERMISSION_REVIEW_REQUIRED) != 0) {
updatePermissionFlagsInternal(permission, pkg.packageName,
PackageManager.FLAG_PERMISSION_REVIEW_REQUIRED, 0, callingUid,
userId, false, callback);
}
}
}
}
}
private void setWhitelistedRestrictedPermissionsForUser(@NonNull PackageParser.Package pkg,
@UserIdInt int userId, @Nullable List<String> permissions, int callingUid,
@PermissionWhitelistFlags int whitelistFlags, PermissionCallback callback) {
final PermissionsState permissionsState =
PackageManagerServiceUtils.getPermissionsState(pkg);
if (permissionsState == null) {
return;
}
ArraySet<String> oldGrantedRestrictedPermissions = null;
boolean updatePermissions = false;
final int permissionCount = pkg.requestedPermissions.size();
for (int i = 0; i < permissionCount; i++) {
final String permissionName = pkg.requestedPermissions.get(i);
final BasePermission bp = mSettings.getPermissionLocked(permissionName);
if (bp == null || !bp.isHardOrSoftRestricted()) {
continue;
}
if (permissionsState.hasPermission(permissionName, userId)) {
if (oldGrantedRestrictedPermissions == null) {
oldGrantedRestrictedPermissions = new ArraySet<>();
}
oldGrantedRestrictedPermissions.add(permissionName);
}
final int oldFlags = permissionsState.getPermissionFlags(permissionName, userId);
int newFlags = oldFlags;
int mask = 0;
int whitelistFlagsCopy = whitelistFlags;
while (whitelistFlagsCopy != 0) {
final int flag = 1 << Integer.numberOfTrailingZeros(whitelistFlagsCopy);
whitelistFlagsCopy &= ~flag;
switch (flag) {
case FLAG_PERMISSION_WHITELIST_SYSTEM: {
mask |= PackageManager.FLAG_PERMISSION_RESTRICTION_SYSTEM_EXEMPT;
if (permissions != null && permissions.contains(permissionName)) {
newFlags |= PackageManager.FLAG_PERMISSION_RESTRICTION_SYSTEM_EXEMPT;
} else {
newFlags &= ~PackageManager.FLAG_PERMISSION_RESTRICTION_SYSTEM_EXEMPT;
}
} break;
case FLAG_PERMISSION_WHITELIST_UPGRADE: {
mask |= PackageManager.FLAG_PERMISSION_RESTRICTION_UPGRADE_EXEMPT;
if (permissions != null && permissions.contains(permissionName)) {
newFlags |= PackageManager.FLAG_PERMISSION_RESTRICTION_UPGRADE_EXEMPT;
} else {
newFlags &= ~PackageManager.FLAG_PERMISSION_RESTRICTION_UPGRADE_EXEMPT;
}
} break;
case FLAG_PERMISSION_WHITELIST_INSTALLER: {
mask |= PackageManager.FLAG_PERMISSION_RESTRICTION_INSTALLER_EXEMPT;
if (permissions != null && permissions.contains(permissionName)) {
newFlags |= PackageManager.FLAG_PERMISSION_RESTRICTION_INSTALLER_EXEMPT;
} else {
newFlags &= ~PackageManager.FLAG_PERMISSION_RESTRICTION_INSTALLER_EXEMPT;
}
} break;
}
}
if (oldFlags == newFlags) {
continue;
}
updatePermissions = true;
final boolean wasWhitelisted = (oldFlags
& (PackageManager.FLAGS_PERMISSION_RESTRICTION_ANY_EXEMPT)) != 0;
final boolean isWhitelisted = (newFlags
& (PackageManager.FLAGS_PERMISSION_RESTRICTION_ANY_EXEMPT)) != 0;
// If the permission is policy fixed as granted but it is no longer
// on any of the whitelists we need to clear the policy fixed flag
// as whitelisting trumps policy i.e. policy cannot grant a non
// grantable permission.
if ((oldFlags & PackageManager.FLAG_PERMISSION_POLICY_FIXED) != 0) {
final boolean isGranted = permissionsState.hasPermission(permissionName, userId);
if (!isWhitelisted && isGranted) {
mask |= PackageManager.FLAG_PERMISSION_POLICY_FIXED;
newFlags &= ~PackageManager.FLAG_PERMISSION_POLICY_FIXED;
}
}
// If we are whitelisting an app that does not support runtime permissions
// we need to make sure it goes through the permission review UI at launch.
if (pkg.applicationInfo.targetSdkVersion < Build.VERSION_CODES.M
&& !wasWhitelisted && isWhitelisted) {
mask |= PackageManager.FLAG_PERMISSION_REVIEW_REQUIRED;
newFlags |= PackageManager.FLAG_PERMISSION_REVIEW_REQUIRED;
}
updatePermissionFlagsInternal(permissionName, pkg.packageName, mask, newFlags,
callingUid, userId, false, null /*callback*/);
}
if (updatePermissions) {
// Update permission of this app to take into account the new whitelist state.
restorePermissionState(pkg, false, pkg.packageName, callback);
// If this resulted in losing a permission we need to kill the app.
if (oldGrantedRestrictedPermissions != null) {
final int oldGrantedCount = oldGrantedRestrictedPermissions.size();
for (int i = 0; i < oldGrantedCount; i++) {
final String permission = oldGrantedRestrictedPermissions.valueAt(i);
// Sometimes we create a new permission state instance during update.
final PermissionsState newPermissionsState =
PackageManagerServiceUtils.getPermissionsState(pkg);
if (!newPermissionsState.hasPermission(permission, userId)) {
callback.onPermissionRevoked(pkg.applicationInfo.uid, userId);
break;
}
}
}
}
}
@GuardedBy("mLock")
private int[] revokeUnusedSharedUserPermissionsLocked(
SharedUserSetting suSetting, int[] allUserIds) {
// Collect all used permissions in the UID
final ArraySet<String> usedPermissions = new ArraySet<>();
final List<PackageParser.Package> pkgList = suSetting.getPackages();
if (pkgList == null || pkgList.size() == 0) {
return EmptyArray.INT;
}
for (PackageParser.Package pkg : pkgList) {
if (pkg.requestedPermissions == null) {
continue;
}
final int requestedPermCount = pkg.requestedPermissions.size();
for (int j = 0; j < requestedPermCount; j++) {
String permission = pkg.requestedPermissions.get(j);
BasePermission bp = mSettings.getPermissionLocked(permission);
if (bp != null) {
usedPermissions.add(permission);
}
}
}
PermissionsState permissionsState = suSetting.getPermissionsState();
// Prune install permissions
List<PermissionState> installPermStates = permissionsState.getInstallPermissionStates();
final int installPermCount = installPermStates.size();
for (int i = installPermCount - 1; i >= 0; i--) {
PermissionState permissionState = installPermStates.get(i);
if (!usedPermissions.contains(permissionState.getName())) {
BasePermission bp = mSettings.getPermissionLocked(permissionState.getName());
if (bp != null) {
permissionsState.revokeInstallPermission(bp);
permissionsState.updatePermissionFlags(bp, UserHandle.USER_ALL,
MASK_PERMISSION_FLAGS_ALL, 0);
}
}
}
int[] runtimePermissionChangedUserIds = EmptyArray.INT;
// Prune runtime permissions
for (int userId : allUserIds) {
List<PermissionState> runtimePermStates = permissionsState
.getRuntimePermissionStates(userId);
final int runtimePermCount = runtimePermStates.size();
for (int i = runtimePermCount - 1; i >= 0; i--) {
PermissionState permissionState = runtimePermStates.get(i);
if (!usedPermissions.contains(permissionState.getName())) {
BasePermission bp = mSettings.getPermissionLocked(permissionState.getName());
if (bp != null) {
permissionsState.revokeRuntimePermission(bp, userId);
permissionsState.updatePermissionFlags(bp, userId,
MASK_PERMISSION_FLAGS_ALL, 0);
runtimePermissionChangedUserIds = ArrayUtils.appendInt(
runtimePermissionChangedUserIds, userId);
}
}
}
}
return runtimePermissionChangedUserIds;
}
/**
* Update permissions when a package changed.
*
* <p><ol>
* <li>Reconsider the ownership of permission</li>
* <li>Update the state (grant, flags) of the permissions</li>
* </ol>
*
* @param packageName The package that is updated
* @param pkg The package that is updated, or {@code null} if package is deleted
* @param allPackages All currently known packages
* @param callback Callback to call after permission changes
*/
private void updatePermissions(@NonNull String packageName, @Nullable PackageParser.Package pkg,
@NonNull PermissionCallback callback) {
final int flags =
(pkg != null ? UPDATE_PERMISSIONS_ALL | UPDATE_PERMISSIONS_REPLACE_PKG : 0);
updatePermissions(
packageName, pkg, getVolumeUuidForPackage(pkg), flags, callback);
if (pkg != null && pkg.childPackages != null) {
for (PackageParser.Package childPkg : pkg.childPackages) {
updatePermissions(childPkg.packageName, childPkg,
getVolumeUuidForPackage(childPkg), flags, callback);
}
}
}
/**
* Update all permissions for all apps.
*
* <p><ol>
* <li>Reconsider the ownership of permission</li>
* <li>Update the state (grant, flags) of the permissions</li>
* </ol>
*
* @param volumeUuid The volume of the packages to be updated, {@code null} for all volumes
* @param allPackages All currently known packages
* @param callback Callback to call after permission changes
*/
private void updateAllPermissions(@Nullable String volumeUuid, boolean sdkUpdated,
@NonNull PermissionCallback callback) {
final int flags = UPDATE_PERMISSIONS_ALL |
(sdkUpdated
? UPDATE_PERMISSIONS_REPLACE_PKG | UPDATE_PERMISSIONS_REPLACE_ALL
: 0);
updatePermissions(null, null, volumeUuid, flags, callback);
}
/**
* Cache background->foreground permission mapping.
*
* <p>This is only run once.
*/
private void cacheBackgroundToForegoundPermissionMapping() {
synchronized (mLock) {
if (mBackgroundPermissions == null) {
// Cache background -> foreground permission mapping.
// Only system declares background permissions, hence mapping does never change.
mBackgroundPermissions = new ArrayMap<>();
for (BasePermission bp : mSettings.getAllPermissionsLocked()) {
if (bp.perm != null && bp.perm.info != null
&& bp.perm.info.backgroundPermission != null) {
String fgPerm = bp.name;
String bgPerm = bp.perm.info.backgroundPermission;
List<String> fgPerms = mBackgroundPermissions.get(bgPerm);
if (fgPerms == null) {
fgPerms = new ArrayList<>();
mBackgroundPermissions.put(bgPerm, fgPerms);
}
fgPerms.add(fgPerm);
}
}
}
}
}
/**
* Update all packages on the volume, <u>beside</u> the changing package. If the changing
* package is set too, all packages are updated.
*/
private static final int UPDATE_PERMISSIONS_ALL = 1 << 0;
/** The changing package is replaced. Requires the changing package to be set */
private static final int UPDATE_PERMISSIONS_REPLACE_PKG = 1 << 1;
/**
* Schedule all packages <u>beside</u> the changing package for replacement. Requires
* UPDATE_PERMISSIONS_ALL to be set
*/
private static final int UPDATE_PERMISSIONS_REPLACE_ALL = 1 << 2;
@IntDef(flag = true, prefix = { "UPDATE_PERMISSIONS_" }, value = {
UPDATE_PERMISSIONS_ALL, UPDATE_PERMISSIONS_REPLACE_PKG,
UPDATE_PERMISSIONS_REPLACE_ALL })
@Retention(RetentionPolicy.SOURCE)
private @interface UpdatePermissionFlags {}
/**
* Update permissions when packages changed.
*
* <p><ol>
* <li>Reconsider the ownership of permission</li>
* <li>Update the state (grant, flags) of the permissions</li>
* </ol>
*
* <p>Meaning of combination of package parameters:
* <table>
* <tr><th></th><th>changingPkgName != null</th><th>changingPkgName == null</th></tr>
* <tr><th>changingPkg != null</th><td>package is updated</td><td>invalid</td></tr>
* <tr><th>changingPkg == null</th><td>package is deleted</td><td>all packages are
* updated</td></tr>
* </table>
*
* @param changingPkgName The package that is updated, or {@code null} if all packages should be
* updated
* @param changingPkg The package that is updated, or {@code null} if all packages should be
* updated or package is deleted
* @param replaceVolumeUuid The volume of the packages to be updated are on, {@code null} for
* all volumes
* @param flags Control permission for which apps should be updated
* @param allPackages All currently known packages
* @param callback Callback to call after permission changes
*/
private void updatePermissions(final @Nullable String changingPkgName,
final @Nullable PackageParser.Package changingPkg,
final @Nullable String replaceVolumeUuid,
@UpdatePermissionFlags int flags,
final @Nullable PermissionCallback callback) {
// TODO: Most of the methods exposing BasePermission internals [source package name,
// etc..] shouldn't be needed. Instead, when we've parsed a permission that doesn't
// have package settings, we should make note of it elsewhere [map between
// source package name and BasePermission] and cycle through that here. Then we
// define a single method on BasePermission that takes a PackageSetting, changing
// package name and a package.
// NOTE: With this approach, we also don't need to tree trees differently than
// normal permissions. Today, we need two separate loops because these BasePermission
// objects are stored separately.
// Make sure there are no dangling permission trees.
boolean permissionTreesSourcePackageChanged = updatePermissionTreeSourcePackage(
changingPkgName, changingPkg);
// Make sure all dynamic permissions have been assigned to a package,
// and make sure there are no dangling permissions.
boolean permissionSourcePackageChanged = updatePermissionSourcePackage(changingPkgName,
changingPkg);
if (permissionTreesSourcePackageChanged | permissionSourcePackageChanged) {
// Permission ownership has changed. This e.g. changes which packages can get signature
// permissions
flags |= UPDATE_PERMISSIONS_ALL;
}
cacheBackgroundToForegoundPermissionMapping();
Trace.traceBegin(TRACE_TAG_PACKAGE_MANAGER, "restorePermissionState");
// Now update the permissions for all packages.
if ((flags & UPDATE_PERMISSIONS_ALL) != 0) {
final boolean replaceAll = ((flags & UPDATE_PERMISSIONS_REPLACE_ALL) != 0);
mPackageManagerInt.forEachPackage((Package pkg) -> {
if (pkg == changingPkg) {
return;
}
// Only replace for packages on requested volume
final String volumeUuid = getVolumeUuidForPackage(pkg);
final boolean replace = replaceAll && Objects.equals(replaceVolumeUuid, volumeUuid);
restorePermissionState(pkg, replace, changingPkgName, callback);
});
}
if (changingPkg != null) {
// Only replace for packages on requested volume
final String volumeUuid = getVolumeUuidForPackage(changingPkg);
final boolean replace = ((flags & UPDATE_PERMISSIONS_REPLACE_PKG) != 0)
&& Objects.equals(replaceVolumeUuid, volumeUuid);
restorePermissionState(changingPkg, replace, changingPkgName, callback);
}
Trace.traceEnd(TRACE_TAG_PACKAGE_MANAGER);
}
/**
* Update which app declares a permission.
*
* <p>Possible parameter combinations
* <table>
* <tr><th></th><th>packageName != null</th><th>packageName == null</th></tr>
* <tr><th>pkg != null</th><td>package is updated</td><td>invalid</td></tr>
* <tr><th>pkg == null</th><td>package is deleted</td><td>all packages are updated</td></tr>
* </table>
*
* @param packageName The package that is updated, or {@code null} if all packages should be
* updated
* @param pkg The package that is updated, or {@code null} if all packages should be updated or
* package is deleted
*
* @return {@code true} if a permission source package might have changed
*/
private boolean updatePermissionSourcePackage(@Nullable String packageName,
@Nullable PackageParser.Package pkg) {
boolean changed = false;
Set<BasePermission> needsUpdate = null;
synchronized (mLock) {
final Iterator<BasePermission> it = mSettings.mPermissions.values().iterator();
while (it.hasNext()) {
final BasePermission bp = it.next();
if (bp.isDynamic()) {
bp.updateDynamicPermission(mSettings.mPermissionTrees.values());
}
if (bp.getSourcePackageSetting() != null) {
if (packageName != null && packageName.equals(bp.getSourcePackageName())
&& (pkg == null || !hasPermission(pkg, bp.getName()))) {
Slog.i(TAG, "Removing permission " + bp.getName()
+ " that used to be declared by " + bp.getSourcePackageName());
changed = true;
it.remove();
}
continue;
}
if (needsUpdate == null) {
needsUpdate = new ArraySet<>(mSettings.mPermissions.size());
}
needsUpdate.add(bp);
}
}
if (needsUpdate != null) {
for (final BasePermission bp : needsUpdate) {
final PackageParser.Package sourcePkg =
mPackageManagerInt.getPackage(bp.getSourcePackageName());
synchronized (mLock) {
if (sourcePkg != null && sourcePkg.mExtras != null) {
final PackageSetting sourcePs = (PackageSetting) sourcePkg.mExtras;
if (bp.getSourcePackageSetting() == null) {
bp.setSourcePackageSetting(sourcePs);
}
continue;
}
Slog.w(TAG, "Removing dangling permission: " + bp.getName()
+ " from package " + bp.getSourcePackageName());
mSettings.removePermissionLocked(bp.getName());
}
}
}
return changed;
}
/**
* Update which app owns a permission trees.
*
* <p>Possible parameter combinations
* <table>
* <tr><th></th><th>packageName != null</th><th>packageName == null</th></tr>
* <tr><th>pkg != null</th><td>package is updated</td><td>invalid</td></tr>
* <tr><th>pkg == null</th><td>package is deleted</td><td>all packages are updated</td></tr>
* </table>
*
* @param packageName The package that is updated, or {@code null} if all packages should be
* updated
* @param pkg The package that is updated, or {@code null} if all packages should be updated or
* package is deleted
*
* @return {@code true} if a permission tree ownership might have changed
*/
private boolean updatePermissionTreeSourcePackage(@Nullable String packageName,
@Nullable PackageParser.Package pkg) {
boolean changed = false;
Set<BasePermission> needsUpdate = null;
synchronized (mLock) {
final Iterator<BasePermission> it = mSettings.mPermissionTrees.values().iterator();
while (it.hasNext()) {
final BasePermission bp = it.next();
if (bp.getSourcePackageSetting() != null) {
if (packageName != null && packageName.equals(bp.getSourcePackageName())
&& (pkg == null || !hasPermission(pkg, bp.getName()))) {
Slog.i(TAG, "Removing permission tree " + bp.getName()
+ " that used to be declared by " + bp.getSourcePackageName());
changed = true;
it.remove();
}
continue;
}
if (needsUpdate == null) {
needsUpdate = new ArraySet<>(mSettings.mPermissionTrees.size());
}
needsUpdate.add(bp);
}
}
if (needsUpdate != null) {
for (final BasePermission bp : needsUpdate) {
final PackageParser.Package sourcePkg =
mPackageManagerInt.getPackage(bp.getSourcePackageName());
synchronized (mLock) {
if (sourcePkg != null && sourcePkg.mExtras != null) {
final PackageSetting sourcePs = (PackageSetting) sourcePkg.mExtras;
if (bp.getSourcePackageSetting() == null) {
bp.setSourcePackageSetting(sourcePs);
}
continue;
}
Slog.w(TAG, "Removing dangling permission tree: " + bp.getName()
+ " from package " + bp.getSourcePackageName());
mSettings.removePermissionLocked(bp.getName());
}
}
}
return changed;
}
private void enforceGrantRevokeRuntimePermissionPermissions(String message) {
if (mContext.checkCallingOrSelfPermission(Manifest.permission.GRANT_RUNTIME_PERMISSIONS)
!= PackageManager.PERMISSION_GRANTED
&& mContext.checkCallingOrSelfPermission(Manifest.permission.REVOKE_RUNTIME_PERMISSIONS)
!= PackageManager.PERMISSION_GRANTED) {
throw new SecurityException(message + " requires "
+ Manifest.permission.GRANT_RUNTIME_PERMISSIONS + " or "
+ Manifest.permission.REVOKE_RUNTIME_PERMISSIONS);
}
}
private void enforceGrantRevokeGetRuntimePermissionPermissions(@NonNull String message) {
if (mContext.checkCallingOrSelfPermission(Manifest.permission.GET_RUNTIME_PERMISSIONS)
!= PackageManager.PERMISSION_GRANTED
&& mContext.checkCallingOrSelfPermission(Manifest.permission.GRANT_RUNTIME_PERMISSIONS)
!= PackageManager.PERMISSION_GRANTED
&& mContext.checkCallingOrSelfPermission(Manifest.permission.REVOKE_RUNTIME_PERMISSIONS)
!= PackageManager.PERMISSION_GRANTED) {
throw new SecurityException(message + " requires "
+ Manifest.permission.GRANT_RUNTIME_PERMISSIONS + " or "
+ Manifest.permission.REVOKE_RUNTIME_PERMISSIONS + " or "
+ Manifest.permission.GET_RUNTIME_PERMISSIONS);
}
}
/**
* Checks if the request is from the system or an app that has INTERACT_ACROSS_USERS
* or INTERACT_ACROSS_USERS_FULL permissions, if the userid is not for the caller.
* @param checkShell whether to prevent shell from access if there's a debugging restriction
* @param message the message to log on security exception
*/
private void enforceCrossUserPermission(int callingUid, int userId,
boolean requireFullPermission, boolean checkShell,
boolean requirePermissionWhenSameUser, String message) {
if (userId < 0) {
throw new IllegalArgumentException("Invalid userId " + userId);
}
if (checkShell) {
PackageManagerServiceUtils.enforceShellRestriction(
UserManager.DISALLOW_DEBUGGING_FEATURES, callingUid, userId);
}
if (!requirePermissionWhenSameUser && userId == UserHandle.getUserId(callingUid)) return;
if (callingUid != Process.SYSTEM_UID && callingUid != Process.ROOT_UID) {
if (requireFullPermission) {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, message);
} else {
try {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, message);
} catch (SecurityException se) {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.INTERACT_ACROSS_USERS, message);
}
}
}
}
@GuardedBy({"mSettings.mLock", "mLock"})
private int calculateCurrentPermissionFootprintLocked(BasePermission tree) {
int size = 0;
for (BasePermission perm : mSettings.mPermissions.values()) {
size += tree.calculateFootprint(perm);
}
return size;
}
@GuardedBy({"mSettings.mLock", "mLock"})
private void enforcePermissionCapLocked(PermissionInfo info, BasePermission tree) {
// We calculate the max size of permissions defined by this uid and throw
// if that plus the size of 'info' would exceed our stated maximum.
if (tree.getUid() != Process.SYSTEM_UID) {
final int curTreeSize = calculateCurrentPermissionFootprintLocked(tree);
if (curTreeSize + info.calculateFootprint() > MAX_PERMISSION_TREE_FOOTPRINT) {
throw new SecurityException("Permission tree size cap exceeded");
}
}
}
private void systemReady() {
mSystemReady = true;
if (mPrivappPermissionsViolations != null) {
throw new IllegalStateException("Signature|privileged permissions not in "
+ "privapp-permissions whitelist: " + mPrivappPermissionsViolations);
}
mPermissionControllerManager = mContext.getSystemService(PermissionControllerManager.class);
int[] grantPermissionsUserIds = EMPTY_INT_ARRAY;
for (int userId : UserManagerService.getInstance().getUserIds()) {
if (!mPackageManagerInt.areDefaultRuntimePermissionsGranted(userId)) {
grantPermissionsUserIds = ArrayUtils.appendInt(
grantPermissionsUserIds, userId);
}
}
// If we upgraded grant all default permissions before kicking off.
for (int userId : grantPermissionsUserIds) {
mDefaultPermissionGrantPolicy.grantDefaultPermissions(userId);
}
if (grantPermissionsUserIds == EMPTY_INT_ARRAY) {
// If we did not grant default permissions, we preload from this the
// default permission exceptions lazily to ensure we don't hit the
// disk on a new user creation.
mDefaultPermissionGrantPolicy.scheduleReadDefaultPermissionExceptions();
}
}
private static String getVolumeUuidForPackage(PackageParser.Package pkg) {
if (pkg == null) {
return StorageManager.UUID_PRIVATE_INTERNAL;
}
if (pkg.isExternal()) {
if (TextUtils.isEmpty(pkg.volumeUuid)) {
return StorageManager.UUID_PRIMARY_PHYSICAL;
} else {
return pkg.volumeUuid;
}
} else {
return StorageManager.UUID_PRIVATE_INTERNAL;
}
}
private static boolean hasPermission(PackageParser.Package pkgInfo, String permName) {
for (int i=pkgInfo.permissions.size()-1; i>=0; i--) {
if (pkgInfo.permissions.get(i).info.name.equals(permName)) {
return true;
}
}
return false;
}
/**
* Log that a permission request was granted/revoked.
*
* @param action the action performed
* @param name name of the permission
* @param packageName package permission is for
*/
private void logPermission(int action, @NonNull String name, @NonNull String packageName) {
final LogMaker log = new LogMaker(action);
log.setPackageName(packageName);
log.addTaggedData(MetricsEvent.FIELD_PERMISSION, name);
mMetricsLogger.write(log);
}
/**
* Get the mapping of background permissions to their foreground permissions.
*
* <p>Only initialized in the system server.
*
* @return the map &lt;bg permission -> list&lt;fg perm&gt;&gt;
*/
public @Nullable ArrayMap<String, List<String>> getBackgroundPermissions() {
return mBackgroundPermissions;
}
private class PermissionManagerServiceInternalImpl extends PermissionManagerServiceInternal {
@Override
public void systemReady() {
PermissionManagerService.this.systemReady();
}
@Override
public boolean isPermissionsReviewRequired(@NonNull Package pkg, @UserIdInt int userId) {
return PermissionManagerService.this.isPermissionsReviewRequired(pkg, userId);
}
@Override
public void revokeRuntimePermissionsIfGroupChanged(
@NonNull PackageParser.Package newPackage,
@NonNull PackageParser.Package oldPackage,
@NonNull ArrayList<String> allPackageNames) {
PermissionManagerService.this.revokeRuntimePermissionsIfGroupChanged(newPackage,
oldPackage, allPackageNames, mDefaultPermissionCallback);
}
@Override
public void addAllPermissions(Package pkg, boolean chatty) {
PermissionManagerService.this.addAllPermissions(pkg, chatty);
}
@Override
public void addAllPermissionGroups(Package pkg, boolean chatty) {
PermissionManagerService.this.addAllPermissionGroups(pkg, chatty);
}
@Override
public void removeAllPermissions(Package pkg, boolean chatty) {
PermissionManagerService.this.removeAllPermissions(pkg, chatty);
}
@Override
public void grantRequestedRuntimePermissions(PackageParser.Package pkg, int[] userIds,
String[] grantedPermissions, int callingUid) {
PermissionManagerService.this.grantRequestedRuntimePermissions(
pkg, userIds, grantedPermissions, callingUid, mDefaultPermissionCallback);
}
@Override
public void setWhitelistedRestrictedPermissions(@NonNull PackageParser.Package pkg,
@NonNull int[] userIds, @Nullable List<String> permissions, int callingUid,
@PackageManager.PermissionWhitelistFlags int flags) {
for (int userId : userIds) {
setWhitelistedRestrictedPermissionsForUser(pkg, userId, permissions,
callingUid, flags, mDefaultPermissionCallback);
}
}
@Override
public void setWhitelistedRestrictedPermissions(String packageName,
List<String> permissions, int flags, int userId) {
PermissionManagerService.this.setWhitelistedRestrictedPermissionsInternal(
packageName, permissions, flags, userId);
}
@Override
public void grantRuntimePermissionsGrantedToDisabledPackage(PackageParser.Package pkg,
int callingUid) {
PermissionManagerService.this.grantRuntimePermissionsGrantedToDisabledPackageLocked(
pkg, callingUid, mDefaultPermissionCallback);
}
@Override
public void updatePermissions(@NonNull String packageName, @Nullable Package pkg) {
PermissionManagerService.this
.updatePermissions(packageName, pkg, mDefaultPermissionCallback);
}
@Override
public void updateAllPermissions(@Nullable String volumeUuid, boolean sdkUpdated) {
PermissionManagerService.this
.updateAllPermissions(volumeUuid, sdkUpdated, mDefaultPermissionCallback);
}
@Override
public void resetRuntimePermissions(Package pkg, int userId) {
PermissionManagerService.this.resetRuntimePermissionsInternal(pkg, userId);
}
@Override
public void resetAllRuntimePermissions(final int userId) {
mPackageManagerInt.forEachPackage(
(PackageParser.Package pkg) -> resetRuntimePermissionsInternal(pkg, userId));
}
@Override
public String[] getAppOpPermissionPackages(String permName, int callingUid) {
return PermissionManagerService.this
.getAppOpPermissionPackagesInternal(permName, callingUid);
}
@Override
public void enforceCrossUserPermission(int callingUid, int userId,
boolean requireFullPermission, boolean checkShell, String message) {
PermissionManagerService.this.enforceCrossUserPermission(callingUid, userId,
requireFullPermission, checkShell, false, message);
}
@Override
public void enforceCrossUserPermission(int callingUid, int userId,
boolean requireFullPermission, boolean checkShell,
boolean requirePermissionWhenSameUser, String message) {
PermissionManagerService.this.enforceCrossUserPermission(callingUid, userId,
requireFullPermission, checkShell, requirePermissionWhenSameUser, message);
}
@Override
public void enforceGrantRevokeRuntimePermissionPermissions(String message) {
PermissionManagerService.this.enforceGrantRevokeRuntimePermissionPermissions(message);
}
@Override
public PermissionSettings getPermissionSettings() {
return mSettings;
}
@Override
public BasePermission getPermissionTEMP(String permName) {
synchronized (PermissionManagerService.this.mLock) {
return mSettings.getPermissionLocked(permName);
}
}
@Override
public @NonNull ArrayList<PermissionInfo> getAllPermissionWithProtectionLevel(
@PermissionInfo.Protection int protectionLevel) {
ArrayList<PermissionInfo> matchingPermissions = new ArrayList<>();
synchronized (PermissionManagerService.this.mLock) {
int numTotalPermissions = mSettings.mPermissions.size();
for (int i = 0; i < numTotalPermissions; i++) {
BasePermission bp = mSettings.mPermissions.valueAt(i);
if (bp.perm != null && bp.perm.info != null
&& bp.protectionLevel == protectionLevel) {
matchingPermissions.add(bp.perm.info);
}
}
}
return matchingPermissions;
}
@Override
public @Nullable byte[] backupRuntimePermissions(@NonNull UserHandle user) {
return PermissionManagerService.this.backupRuntimePermissions(user);
}
@Override
public void restoreRuntimePermissions(@NonNull byte[] backup, @NonNull UserHandle user) {
PermissionManagerService.this.restoreRuntimePermissions(backup, user);
}
@Override
public void restoreDelayedRuntimePermissions(@NonNull String packageName,
@NonNull UserHandle user) {
PermissionManagerService.this.restoreDelayedRuntimePermissions(packageName, user);
}
@Override
public void addOnRuntimePermissionStateChangedListener(
OnRuntimePermissionStateChangedListener listener) {
PermissionManagerService.this.addOnRuntimePermissionStateChangedListener(
listener);
}
@Override
public void removeOnRuntimePermissionStateChangedListener(
OnRuntimePermissionStateChangedListener listener) {
PermissionManagerService.this.removeOnRuntimePermissionStateChangedListener(
listener);
}
@Override
public CheckPermissionDelegate getCheckPermissionDelegate() {
synchronized (mLock) {
return mCheckPermissionDelegate;
}
}
@Override
public void setCheckPermissionDelegate(CheckPermissionDelegate delegate) {
synchronized (mLock) {
mCheckPermissionDelegate = delegate;
}
}
@Override
public void setDefaultBrowserProvider(@NonNull DefaultBrowserProvider provider) {
synchronized (mLock) {
mDefaultBrowserProvider = provider;
}
}
@Override
public void setDefaultBrowser(String packageName, boolean async, boolean doGrant,
int userId) {
setDefaultBrowserInternal(packageName, async, doGrant, userId);
}
@Override
public void setDefaultDialerProvider(@NonNull DefaultDialerProvider provider) {
synchronized (mLock) {
mDefaultDialerProvider = provider;
}
}
@Override
public void setDefaultHomeProvider(@NonNull DefaultHomeProvider provider) {
synchronized (mLock) {
mDefaultHomeProvider = provider;
}
}
@Override
public void setDefaultHome(String packageName, int userId, Consumer<Boolean> callback) {
synchronized (mLock) {
if (userId == UserHandle.USER_ALL) {
return;
}
if (mDefaultHomeProvider == null) {
return;
}
mDefaultHomeProvider.setDefaultHomeAsync(packageName, userId, callback);
}
}
@Override
public void setDialerAppPackagesProvider(PackagesProvider provider) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy.setDialerAppPackagesProvider(provider);
}
}
@Override
public void setLocationExtraPackagesProvider(PackagesProvider provider) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy.setLocationExtraPackagesProvider(provider);
}
}
@Override
public void setLocationPackagesProvider(PackagesProvider provider) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy.setLocationPackagesProvider(provider);
}
}
@Override
public void setSimCallManagerPackagesProvider(PackagesProvider provider) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy.setSimCallManagerPackagesProvider(provider);
}
}
@Override
public void setSmsAppPackagesProvider(PackagesProvider provider) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy.setSmsAppPackagesProvider(provider);
}
}
@Override
public void setSyncAdapterPackagesProvider(SyncAdapterPackagesProvider provider) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy.setSyncAdapterPackagesProvider(provider);
}
}
@Override
public void setUseOpenWifiAppPackagesProvider(PackagesProvider provider) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy.setUseOpenWifiAppPackagesProvider(provider);
}
}
@Override
public void setVoiceInteractionPackagesProvider(PackagesProvider provider) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy.setVoiceInteractionPackagesProvider(provider);
}
}
@Override
public String getDefaultBrowser(int userId) {
synchronized (mLock) {
return mDefaultBrowserProvider == null
? null : mDefaultBrowserProvider.getDefaultBrowser(userId);
}
}
@Override
public String getDefaultDialer(int userId) {
synchronized (mLock) {
return mDefaultDialerProvider == null
? null : mDefaultDialerProvider.getDefaultDialer(userId);
}
}
@Override
public String getDefaultHome(int userId) {
synchronized (mLock) {
return mDefaultHomeProvider == null
? null : mDefaultHomeProvider.getDefaultHome(userId);
}
}
@Override
public void grantDefaultPermissionsToDefaultSimCallManager(String packageName, int userId) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy
.grantDefaultPermissionsToDefaultSimCallManager(packageName, userId);
}
}
@Override
public void grantDefaultPermissionsToDefaultUseOpenWifiApp(String packageName, int userId) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy
.grantDefaultPermissionsToDefaultUseOpenWifiApp(packageName, userId);
}
}
@Override
public void grantDefaultPermissionsToDefaultBrowser(String packageName, int userId) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy
.grantDefaultPermissionsToDefaultBrowser(packageName, userId);
}
}
@Override
public boolean wereDefaultPermissionsGrantedSinceBoot(int userId) {
synchronized (mLock) {
return mDefaultPermissionGrantPolicy.wereDefaultPermissionsGrantedSinceBoot(userId);
}
}
@Override
public void onNewUserCreated(int userId) {
synchronized (mLock) {
mDefaultPermissionGrantPolicy.grantDefaultPermissions(userId);
// NOTE: This adds UPDATE_PERMISSIONS_REPLACE_PKG
PermissionManagerService.this.updateAllPermissions(
StorageManager.UUID_PRIVATE_INTERNAL, true, mDefaultPermissionCallback);
}
}
}
private static final class OnPermissionChangeListeners extends Handler {
private static final int MSG_ON_PERMISSIONS_CHANGED = 1;
private final RemoteCallbackList<IOnPermissionsChangeListener> mPermissionListeners =
new RemoteCallbackList<>();
OnPermissionChangeListeners(Looper looper) {
super(looper);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_ON_PERMISSIONS_CHANGED: {
final int uid = msg.arg1;
handleOnPermissionsChanged(uid);
} break;
}
}
public void addListenerLocked(IOnPermissionsChangeListener listener) {
mPermissionListeners.register(listener);
}
public void removeListenerLocked(IOnPermissionsChangeListener listener) {
mPermissionListeners.unregister(listener);
}
public void onPermissionsChanged(int uid) {
if (mPermissionListeners.getRegisteredCallbackCount() > 0) {
obtainMessage(MSG_ON_PERMISSIONS_CHANGED, uid, 0).sendToTarget();
}
}
private void handleOnPermissionsChanged(int uid) {
final int count = mPermissionListeners.beginBroadcast();
try {
for (int i = 0; i < count; i++) {
IOnPermissionsChangeListener callback = mPermissionListeners
.getBroadcastItem(i);
try {
callback.onPermissionsChanged(uid);
} catch (RemoteException e) {
Log.e(TAG, "Permission listener is dead", e);
}
}
} finally {
mPermissionListeners.finishBroadcast();
}
}
}
}