Google Git
Sign in
android / platform / frameworks / base / e76855762318a8ec5266627f713ced4847ee53aa / . / services / core / java / com / android / server / net / NetworkPolicyManagerService.java
blob: 1c41dc073ac8f2076d761131da00948e1fa5ba92 [file] [log] [blame]
/*
* Copyright (C) 2011 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.net;
import static android.Manifest.permission.ACCESS_NETWORK_STATE;
import static android.Manifest.permission.CONNECTIVITY_INTERNAL;
import static android.Manifest.permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS;
import static android.Manifest.permission.MANAGE_NETWORK_POLICY;
import static android.Manifest.permission.MANAGE_SUBSCRIPTION_PLANS;
import static android.Manifest.permission.NETWORK_SETTINGS;
import static android.Manifest.permission.NETWORK_STACK;
import static android.Manifest.permission.OBSERVE_NETWORK_POLICY;
import static android.Manifest.permission.READ_NETWORK_USAGE_HISTORY;
import static android.Manifest.permission.READ_PHONE_STATE;
import static android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE;
import static android.content.Intent.ACTION_PACKAGE_ADDED;
import static android.content.Intent.ACTION_UID_REMOVED;
import static android.content.Intent.ACTION_USER_ADDED;
import static android.content.Intent.ACTION_USER_REMOVED;
import static android.content.Intent.EXTRA_UID;
import static android.content.pm.PackageManager.MATCH_ANY_USER;
import static android.content.pm.PackageManager.MATCH_DIRECT_BOOT_AWARE;
import static android.content.pm.PackageManager.MATCH_DIRECT_BOOT_UNAWARE;
import static android.content.pm.PackageManager.MATCH_DISABLED_COMPONENTS;
import static android.content.pm.PackageManager.MATCH_UNINSTALLED_PACKAGES;
import static android.content.pm.PackageManager.PERMISSION_GRANTED;
import static android.net.ConnectivityManager.CONNECTIVITY_ACTION;
import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_DISABLED;
import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED;
import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_WHITELISTED;
import static android.net.ConnectivityManager.TYPE_MOBILE;
import static android.net.INetd.FIREWALL_CHAIN_DOZABLE;
import static android.net.INetd.FIREWALL_CHAIN_POWERSAVE;
import static android.net.INetd.FIREWALL_CHAIN_RESTRICTED;
import static android.net.INetd.FIREWALL_CHAIN_STANDBY;
import static android.net.INetd.FIREWALL_RULE_ALLOW;
import static android.net.INetd.FIREWALL_RULE_DENY;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING;
import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
import static android.net.NetworkPolicy.LIMIT_DISABLED;
import static android.net.NetworkPolicy.SNOOZE_NEVER;
import static android.net.NetworkPolicy.WARNING_DISABLED;
import static android.net.NetworkPolicyManager.EXTRA_NETWORK_TEMPLATE;
import static android.net.NetworkPolicyManager.FIREWALL_RULE_DEFAULT;
import static android.net.NetworkPolicyManager.MASK_ALL_NETWORKS;
import static android.net.NetworkPolicyManager.MASK_METERED_NETWORKS;
import static android.net.NetworkPolicyManager.MASK_RESTRICTED_MODE_NETWORKS;
import static android.net.NetworkPolicyManager.POLICY_ALLOW_METERED_BACKGROUND;
import static android.net.NetworkPolicyManager.POLICY_NONE;
import static android.net.NetworkPolicyManager.POLICY_REJECT_METERED_BACKGROUND;
import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL;
import static android.net.NetworkPolicyManager.RULE_ALLOW_METERED;
import static android.net.NetworkPolicyManager.RULE_NONE;
import static android.net.NetworkPolicyManager.RULE_REJECT_ALL;
import static android.net.NetworkPolicyManager.RULE_REJECT_METERED;
import static android.net.NetworkPolicyManager.RULE_REJECT_RESTRICTED_MODE;
import static android.net.NetworkPolicyManager.RULE_TEMPORARY_ALLOW_METERED;
import static android.net.NetworkPolicyManager.isProcStateAllowedWhileIdleOrPowerSaveMode;
import static android.net.NetworkPolicyManager.isProcStateAllowedWhileOnRestrictBackground;
import static android.net.NetworkPolicyManager.resolveNetworkId;
import static android.net.NetworkPolicyManager.uidPoliciesToString;
import static android.net.NetworkPolicyManager.uidRulesToString;
import static android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK;
import static android.net.NetworkTemplate.MATCH_MOBILE;
import static android.net.NetworkTemplate.MATCH_WIFI;
import static android.net.NetworkTemplate.buildTemplateMobileAll;
import static android.net.TrafficStats.MB_IN_BYTES;
import static android.net.netstats.provider.NetworkStatsProvider.QUOTA_UNLIMITED;
import static android.os.Trace.TRACE_TAG_NETWORK;
import static android.provider.Settings.Global.NETPOLICY_OVERRIDE_ENABLED;
import static android.provider.Settings.Global.NETPOLICY_QUOTA_ENABLED;
import static android.provider.Settings.Global.NETPOLICY_QUOTA_FRAC_JOBS;
import static android.provider.Settings.Global.NETPOLICY_QUOTA_FRAC_MULTIPATH;
import static android.provider.Settings.Global.NETPOLICY_QUOTA_LIMITED;
import static android.provider.Settings.Global.NETPOLICY_QUOTA_UNLIMITED;
import static android.telephony.CarrierConfigManager.ACTION_CARRIER_CONFIG_CHANGED;
import static android.telephony.CarrierConfigManager.DATA_CYCLE_THRESHOLD_DISABLED;
import static android.telephony.CarrierConfigManager.DATA_CYCLE_USE_PLATFORM_DEFAULT;
import static android.telephony.CarrierConfigManager.KEY_DATA_LIMIT_NOTIFICATION_BOOL;
import static android.telephony.CarrierConfigManager.KEY_DATA_RAPID_NOTIFICATION_BOOL;
import static android.telephony.CarrierConfigManager.KEY_DATA_WARNING_NOTIFICATION_BOOL;
import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID;
import static com.android.internal.util.ArrayUtils.appendInt;
import static com.android.internal.util.XmlUtils.readBooleanAttribute;
import static com.android.internal.util.XmlUtils.readIntAttribute;
import static com.android.internal.util.XmlUtils.readLongAttribute;
import static com.android.internal.util.XmlUtils.readStringAttribute;
import static com.android.internal.util.XmlUtils.readThisIntArrayXml;
import static com.android.internal.util.XmlUtils.writeBooleanAttribute;
import static com.android.internal.util.XmlUtils.writeIntArrayXml;
import static com.android.internal.util.XmlUtils.writeIntAttribute;
import static com.android.internal.util.XmlUtils.writeLongAttribute;
import static com.android.internal.util.XmlUtils.writeStringAttribute;
import static com.android.server.NetworkManagementService.LIMIT_GLOBAL_ALERT;
import static com.android.server.net.NetworkPolicyLogger.NTWK_ALLOWED_ALLOWLIST;
import static com.android.server.net.NetworkPolicyLogger.NTWK_ALLOWED_DEFAULT;
import static com.android.server.net.NetworkPolicyLogger.NTWK_ALLOWED_NON_METERED;
import static com.android.server.net.NetworkPolicyLogger.NTWK_ALLOWED_SYSTEM;
import static com.android.server.net.NetworkPolicyLogger.NTWK_ALLOWED_TMP_ALLOWLIST;
import static com.android.server.net.NetworkPolicyLogger.NTWK_BLOCKED_BG_RESTRICT;
import static com.android.server.net.NetworkPolicyLogger.NTWK_BLOCKED_DENYLIST;
import static com.android.server.net.NetworkPolicyLogger.NTWK_BLOCKED_POWER;
import static com.android.server.net.NetworkPolicyLogger.NTWK_BLOCKED_RESTRICTED_MODE;
import static com.android.server.net.NetworkStatsService.ACTION_NETWORK_STATS_UPDATED;
import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT;
import static org.xmlpull.v1.XmlPullParser.END_TAG;
import static org.xmlpull.v1.XmlPullParser.START_TAG;
import android.Manifest;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.app.ActivityManager;
import android.app.ActivityManagerInternal;
import android.app.AppGlobals;
import android.app.AppOpsManager;
import android.app.IActivityManager;
import android.app.IUidObserver;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.usage.UsageStatsManagerInternal;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageManager;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.UserInfo;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.net.ConnectivityManager;
import android.net.ConnectivityManager.NetworkCallback;
import android.net.IConnectivityManager;
import android.net.INetworkManagementEventObserver;
import android.net.INetworkPolicyListener;
import android.net.INetworkPolicyManager;
import android.net.INetworkStatsService;
import android.net.LinkProperties;
import android.net.Network;
import android.net.NetworkCapabilities;
import android.net.NetworkIdentity;
import android.net.NetworkPolicy;
import android.net.NetworkPolicyManager;
import android.net.NetworkQuotaInfo;
import android.net.NetworkRequest;
import android.net.NetworkSpecifier;
import android.net.NetworkStack;
import android.net.NetworkState;
import android.net.NetworkStats;
import android.net.NetworkTemplate;
import android.net.TelephonyNetworkSpecifier;
import android.net.TrafficStats;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.BestClock;
import android.os.Binder;
import android.os.Environment;
import android.os.Handler;
import android.os.HandlerExecutor;
import android.os.HandlerThread;
import android.os.INetworkManagementService;
import android.os.Message;
import android.os.MessageQueue.IdleHandler;
import android.os.PersistableBundle;
import android.os.PowerManager;
import android.os.PowerManager.ServiceType;
import android.os.PowerManagerInternal;
import android.os.PowerSaveState;
import android.os.PowerWhitelistManager;
import android.os.Process;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.ResultReceiver;
import android.os.ShellCallback;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.Trace;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.Settings;
import android.provider.Settings.Global;
import android.telephony.CarrierConfigManager;
import android.telephony.SubscriptionInfo;
import android.telephony.SubscriptionManager;
import android.telephony.SubscriptionManager.OnSubscriptionsChangedListener;
import android.telephony.SubscriptionPlan;
import android.telephony.TelephonyManager;
import android.text.TextUtils;
import android.text.format.DateUtils;
import android.text.format.Formatter;
import android.util.ArrayMap;
import android.util.ArraySet;
import android.util.AtomicFile;
import android.util.DataUnit;
import android.util.IntArray;
import android.util.Log;
import android.util.Pair;
import android.util.Range;
import android.util.RecurrenceRule;
import android.util.Slog;
import android.util.SparseArray;
import android.util.SparseBooleanArray;
import android.util.SparseIntArray;
import android.util.SparseLongArray;
import android.util.Xml;
import com.android.internal.R;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.messages.nano.SystemMessageProto.SystemMessage;
import com.android.internal.notification.SystemNotificationChannels;
import com.android.internal.util.ArrayUtils;
import com.android.internal.util.CollectionUtils;
import com.android.internal.util.ConcurrentUtils;
import com.android.internal.util.DumpUtils;
import com.android.internal.util.FastXmlSerializer;
import com.android.internal.util.IndentingPrintWriter;
import com.android.internal.util.StatLogger;
import com.android.internal.util.XmlUtils;
import com.android.server.EventLogTags;
import com.android.server.LocalServices;
import com.android.server.ServiceThread;
import com.android.server.SystemConfig;
import com.android.server.connectivity.MultipathPolicyTracker;
import com.android.server.usage.AppStandbyInternal;
import com.android.server.usage.AppStandbyInternal.AppIdleStateChangeListener;
import libcore.io.IoUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.nio.charset.StandardCharsets;
import java.time.Clock;
import java.time.Instant;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.temporal.ChronoUnit;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.List;
import java.util.Objects;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.function.IntConsumer;
/**
* Service that maintains low-level network policy rules, using
* {@link NetworkStatsService} statistics to drive those rules.
* <p>
* Derives active rules by combining a given policy with other system status,
* and delivers to listeners, such as {@link ConnectivityManager}, for
* enforcement.
*
* <p>
* This class uses 2 locks to synchronize state:
* <ul>
* <li>{@code mUidRulesFirstLock}: used to guard state related to individual UIDs (such as firewall
* rules).
* <li>{@code mNetworkPoliciesSecondLock}: used to guard state related to network interfaces (such
* as network policies).
* </ul>
*
* <p>
* As such, methods that require synchronization have the following prefixes:
* <ul>
* <li>{@code UL()}: require the "UID" lock ({@code mUidRulesFirstLock}).
* <li>{@code NL()}: require the "Network" lock ({@code mNetworkPoliciesSecondLock}).
* <li>{@code AL()}: require all locks, which must be obtained in order ({@code mUidRulesFirstLock}
* first, then {@code mNetworkPoliciesSecondLock}, then {@code mYetAnotherGuardThirdLock}, etc..
* </ul>
*/
public class NetworkPolicyManagerService extends INetworkPolicyManager.Stub {
static final String TAG = NetworkPolicyLogger.TAG;
private static final boolean LOGD = NetworkPolicyLogger.LOGD;
private static final boolean LOGV = NetworkPolicyLogger.LOGV;
/**
* No opportunistic quota could be calculated from user data plan or data settings.
*/
public static final int OPPORTUNISTIC_QUOTA_UNKNOWN = -1;
private static final int VERSION_INIT = 1;
private static final int VERSION_ADDED_SNOOZE = 2;
private static final int VERSION_ADDED_RESTRICT_BACKGROUND = 3;
private static final int VERSION_ADDED_METERED = 4;
private static final int VERSION_SPLIT_SNOOZE = 5;
private static final int VERSION_ADDED_TIMEZONE = 6;
private static final int VERSION_ADDED_INFERRED = 7;
private static final int VERSION_SWITCH_APP_ID = 8;
private static final int VERSION_ADDED_NETWORK_ID = 9;
private static final int VERSION_SWITCH_UID = 10;
private static final int VERSION_ADDED_CYCLE = 11;
private static final int VERSION_ADDED_NETWORK_TYPES = 12;
private static final int VERSION_LATEST = VERSION_ADDED_NETWORK_TYPES;
@VisibleForTesting
public static final int TYPE_WARNING = SystemMessage.NOTE_NET_WARNING;
@VisibleForTesting
public static final int TYPE_LIMIT = SystemMessage.NOTE_NET_LIMIT;
@VisibleForTesting
public static final int TYPE_LIMIT_SNOOZED = SystemMessage.NOTE_NET_LIMIT_SNOOZED;
@VisibleForTesting
public static final int TYPE_RAPID = SystemMessage.NOTE_NET_RAPID;
private static final String TAG_POLICY_LIST = "policy-list";
private static final String TAG_NETWORK_POLICY = "network-policy";
private static final String TAG_SUBSCRIPTION_PLAN = "subscription-plan";
private static final String TAG_UID_POLICY = "uid-policy";
private static final String TAG_APP_POLICY = "app-policy";
private static final String TAG_WHITELIST = "whitelist";
private static final String TAG_RESTRICT_BACKGROUND = "restrict-background";
private static final String TAG_REVOKED_RESTRICT_BACKGROUND = "revoked-restrict-background";
private static final String TAG_XML_UTILS_INT_ARRAY = "int-array";
private static final String ATTR_VERSION = "version";
private static final String ATTR_RESTRICT_BACKGROUND = "restrictBackground";
private static final String ATTR_NETWORK_TEMPLATE = "networkTemplate";
private static final String ATTR_SUBSCRIBER_ID = "subscriberId";
private static final String ATTR_NETWORK_ID = "networkId";
@Deprecated private static final String ATTR_CYCLE_DAY = "cycleDay";
@Deprecated private static final String ATTR_CYCLE_TIMEZONE = "cycleTimezone";
private static final String ATTR_CYCLE_START = "cycleStart";
private static final String ATTR_CYCLE_END = "cycleEnd";
private static final String ATTR_CYCLE_PERIOD = "cyclePeriod";
private static final String ATTR_WARNING_BYTES = "warningBytes";
private static final String ATTR_LIMIT_BYTES = "limitBytes";
private static final String ATTR_LAST_SNOOZE = "lastSnooze";
private static final String ATTR_LAST_WARNING_SNOOZE = "lastWarningSnooze";
private static final String ATTR_LAST_LIMIT_SNOOZE = "lastLimitSnooze";
private static final String ATTR_METERED = "metered";
private static final String ATTR_INFERRED = "inferred";
private static final String ATTR_UID = "uid";
private static final String ATTR_APP_ID = "appId";
private static final String ATTR_POLICY = "policy";
private static final String ATTR_SUB_ID = "subId";
private static final String ATTR_TITLE = "title";
private static final String ATTR_SUMMARY = "summary";
private static final String ATTR_LIMIT_BEHAVIOR = "limitBehavior";
private static final String ATTR_USAGE_BYTES = "usageBytes";
private static final String ATTR_USAGE_TIME = "usageTime";
private static final String ATTR_OWNER_PACKAGE = "ownerPackage";
private static final String ATTR_NETWORK_TYPES = "networkTypes";
private static final String ATTR_XML_UTILS_NAME = "name";
private static final String ACTION_ALLOW_BACKGROUND =
"com.android.server.net.action.ALLOW_BACKGROUND";
private static final String ACTION_SNOOZE_WARNING =
"com.android.server.net.action.SNOOZE_WARNING";
private static final String ACTION_SNOOZE_RAPID =
"com.android.server.net.action.SNOOZE_RAPID";
/**
* Indicates the maximum wait time for admin data to be available.
*/
private static final long WAIT_FOR_ADMIN_DATA_TIMEOUT_MS = 10_000;
private static final long QUOTA_UNLIMITED_DEFAULT = DataUnit.MEBIBYTES.toBytes(20);
private static final float QUOTA_LIMITED_DEFAULT = 0.1f;
private static final float QUOTA_FRAC_JOBS_DEFAULT = 0.5f;
private static final float QUOTA_FRAC_MULTIPATH_DEFAULT = 0.5f;
private static final int MSG_RULES_CHANGED = 1;
private static final int MSG_METERED_IFACES_CHANGED = 2;
private static final int MSG_LIMIT_REACHED = 5;
private static final int MSG_RESTRICT_BACKGROUND_CHANGED = 6;
private static final int MSG_ADVISE_PERSIST_THRESHOLD = 7;
private static final int MSG_UPDATE_INTERFACE_QUOTA = 10;
private static final int MSG_REMOVE_INTERFACE_QUOTA = 11;
private static final int MSG_POLICIES_CHANGED = 13;
private static final int MSG_RESET_FIREWALL_RULES_BY_UID = 15;
private static final int MSG_SUBSCRIPTION_OVERRIDE = 16;
private static final int MSG_METERED_RESTRICTED_PACKAGES_CHANGED = 17;
private static final int MSG_SET_NETWORK_TEMPLATE_ENABLED = 18;
private static final int MSG_SUBSCRIPTION_PLANS_CHANGED = 19;
private static final int MSG_STATS_PROVIDER_LIMIT_REACHED = 20;
private static final int UID_MSG_STATE_CHANGED = 100;
private static final int UID_MSG_GONE = 101;
private static final String PROP_SUB_PLAN_OWNER = "persist.sys.sub_plan_owner";
private final Context mContext;
private final IActivityManager mActivityManager;
private NetworkStatsManagerInternal mNetworkStats;
private final INetworkManagementService mNetworkManager;
private UsageStatsManagerInternal mUsageStats;
private AppStandbyInternal mAppStandby;
private final Clock mClock;
private final UserManager mUserManager;
private final CarrierConfigManager mCarrierConfigManager;
private final MultipathPolicyTracker mMultipathPolicyTracker;
private IConnectivityManager mConnManager;
private PowerManagerInternal mPowerManagerInternal;
private PowerWhitelistManager mPowerWhitelistManager;
/** Current cached value of the current Battery Saver mode's setting for restrict background. */
@GuardedBy("mUidRulesFirstLock")
private boolean mRestrictBackgroundLowPowerMode;
// Store the status of restrict background before turning on battery saver.
// Used to restore mRestrictBackground when battery saver is turned off.
private boolean mRestrictBackgroundBeforeBsm;
// Denotes the status of restrict background read from disk.
private boolean mLoadedRestrictBackground;
// See main javadoc for instructions on how to use these locks.
final Object mUidRulesFirstLock = new Object();
final Object mNetworkPoliciesSecondLock = new Object();
@GuardedBy({"mUidRulesFirstLock", "mNetworkPoliciesSecondLock"})
volatile boolean mSystemReady;
@GuardedBy("mUidRulesFirstLock") volatile boolean mRestrictBackground;
@GuardedBy("mUidRulesFirstLock") volatile boolean mRestrictPower;
@GuardedBy("mUidRulesFirstLock") volatile boolean mDeviceIdleMode;
// Store whether user flipped restrict background in battery saver mode
@GuardedBy("mUidRulesFirstLock")
volatile boolean mRestrictBackgroundChangedInBsm;
@GuardedBy("mUidRulesFirstLock")
volatile boolean mRestrictedNetworkingMode;
private final boolean mSuppressDefaultPolicy;
private final CountDownLatch mAdminDataAvailableLatch = new CountDownLatch(1);
private volatile boolean mNetworkManagerReady;
/** Defined network policies. */
@GuardedBy("mNetworkPoliciesSecondLock")
final ArrayMap<NetworkTemplate, NetworkPolicy> mNetworkPolicy = new ArrayMap<>();
/** Map from subId to subscription plans. */
@GuardedBy("mNetworkPoliciesSecondLock")
final SparseArray<SubscriptionPlan[]> mSubscriptionPlans = new SparseArray<>();
/** Map from subId to package name that owns subscription plans. */
@GuardedBy("mNetworkPoliciesSecondLock")
final SparseArray<String> mSubscriptionPlansOwner = new SparseArray<>();
/** Map from subId to daily opportunistic quota. */
@GuardedBy("mNetworkPoliciesSecondLock")
final SparseLongArray mSubscriptionOpportunisticQuota = new SparseLongArray();
/** Defined UID policies. */
@GuardedBy("mUidRulesFirstLock") final SparseIntArray mUidPolicy = new SparseIntArray();
/** Currently derived rules for each UID. */
@GuardedBy("mUidRulesFirstLock") final SparseIntArray mUidRules = new SparseIntArray();
@GuardedBy("mUidRulesFirstLock")
final SparseIntArray mUidFirewallStandbyRules = new SparseIntArray();
@GuardedBy("mUidRulesFirstLock")
final SparseIntArray mUidFirewallDozableRules = new SparseIntArray();
@GuardedBy("mUidRulesFirstLock")
final SparseIntArray mUidFirewallPowerSaveRules = new SparseIntArray();
@GuardedBy("mUidRulesFirstLock")
final SparseIntArray mUidFirewallRestrictedModeRules = new SparseIntArray();
/** Set of states for the child firewall chains. True if the chain is active. */
@GuardedBy("mUidRulesFirstLock")
final SparseBooleanArray mFirewallChainStates = new SparseBooleanArray();
// "Power save mode" is the concept used in the DeviceIdleController that includes various
// features including Doze and Battery Saver. It include Battery Saver, but "power save mode"
// and "battery saver" are not equivalent.
/**
* UIDs that have been allowlisted to always be able to have network access
* in power save mode, except device idle (doze) still applies.
* TODO: An int array might be sufficient
*/
@GuardedBy("mUidRulesFirstLock")
private final SparseBooleanArray mPowerSaveWhitelistExceptIdleAppIds = new SparseBooleanArray();
/**
* UIDs that have been allowlisted to always be able to have network access
* in power save mode.
* TODO: An int array might be sufficient
*/
@GuardedBy("mUidRulesFirstLock")
private final SparseBooleanArray mPowerSaveWhitelistAppIds = new SparseBooleanArray();
@GuardedBy("mUidRulesFirstLock")
private final SparseBooleanArray mPowerSaveTempWhitelistAppIds = new SparseBooleanArray();
/**
* UIDs that have been allowlisted temporarily to be able to have network access despite being
* idle. Other power saving restrictions still apply.
*/
@GuardedBy("mUidRulesFirstLock")
private final SparseBooleanArray mAppIdleTempWhitelistAppIds = new SparseBooleanArray();
/**
* UIDs that have been initially allowlisted by system to avoid restricted background.
*/
@GuardedBy("mUidRulesFirstLock")
private final SparseBooleanArray mDefaultRestrictBackgroundAllowlistUids =
new SparseBooleanArray();
/**
* UIDs that have been initially allowlisted by system to avoid restricted background,
* but later revoked by user.
*/
@GuardedBy("mUidRulesFirstLock")
private final SparseBooleanArray mRestrictBackgroundAllowlistRevokedUids =
new SparseBooleanArray();
final Object mMeteredIfacesLock = new Object();
/** Set of ifaces that are metered. */
@GuardedBy("mMeteredIfacesLock")
private ArraySet<String> mMeteredIfaces = new ArraySet<>();
/** Set of over-limit templates that have been notified. */
@GuardedBy("mNetworkPoliciesSecondLock")
private final ArraySet<NetworkTemplate> mOverLimitNotified = new ArraySet<>();
/** Set of currently active {@link Notification} tags. */
@GuardedBy("mNetworkPoliciesSecondLock")
private final ArraySet<NotificationId> mActiveNotifs = new ArraySet<>();
/** Foreground at UID granularity. */
@GuardedBy("mUidRulesFirstLock")
final SparseIntArray mUidState = new SparseIntArray();
/** Map from network ID to last observed meteredness state */
@GuardedBy("mNetworkPoliciesSecondLock")
private final SparseBooleanArray mNetworkMetered = new SparseBooleanArray();
/** Map from network ID to last observed roaming state */
@GuardedBy("mNetworkPoliciesSecondLock")
private final SparseBooleanArray mNetworkRoaming = new SparseBooleanArray();
/** Map from netId to subId as of last update */
@GuardedBy("mNetworkPoliciesSecondLock")
private final SparseIntArray mNetIdToSubId = new SparseIntArray();
/** Map from subId to subscriberId as of last update */
@GuardedBy("mNetworkPoliciesSecondLock")
private final SparseArray<String> mSubIdToSubscriberId = new SparseArray<>();
/** Set of all merged subscriberId as of last update */
@GuardedBy("mNetworkPoliciesSecondLock")
private List<String[]> mMergedSubscriberIds = new ArrayList<>();
/** Map from subId to carrierConfig as of last update */
@GuardedBy("mNetworkPoliciesSecondLock")
private final SparseArray<PersistableBundle> mSubIdToCarrierConfig =
new SparseArray<PersistableBundle>();
/**
* Indicates the uids restricted by admin from accessing metered data. It's a mapping from
* userId to restricted uids which belong to that user.
*/
@GuardedBy("mUidRulesFirstLock")
private final SparseArray<Set<Integer>> mMeteredRestrictedUids = new SparseArray<>();
private final RemoteCallbackList<INetworkPolicyListener>
mListeners = new RemoteCallbackList<>();
final Handler mHandler;
@VisibleForTesting
final Handler mUidEventHandler;
private final ServiceThread mUidEventThread;
@GuardedBy({"mUidRulesFirstLock", "mNetworkPoliciesSecondLock"})
private final AtomicFile mPolicyFile;
private final AppOpsManager mAppOps;
private final IPackageManager mIPm;
private ActivityManagerInternal mActivityManagerInternal;
private final NetworkPolicyLogger mLogger = new NetworkPolicyLogger();
/** List of apps indexed by uid and whether they have the internet permission */
@GuardedBy("mUidRulesFirstLock")
private final SparseBooleanArray mInternetPermissionMap = new SparseBooleanArray();
private RestrictedModeObserver mRestrictedModeObserver;
// TODO: keep allowlist of system-critical services that should never have
// rules enforced, such as system, phone, and radio UIDs.
// TODO: migrate notifications to SystemUI
interface Stats {
int UPDATE_NETWORK_ENABLED = 0;
int IS_UID_NETWORKING_BLOCKED = 1;
int COUNT = IS_UID_NETWORKING_BLOCKED + 1;
}
private static class RestrictedModeObserver extends ContentObserver {
private final Context mContext;
private final RestrictedModeListener mListener;
RestrictedModeObserver(Context ctx, RestrictedModeListener listener) {
super(null);
mContext = ctx;
mListener = listener;
mContext.getContentResolver().registerContentObserver(
Settings.Global.getUriFor(Settings.Global.RESTRICTED_NETWORKING_MODE), false,
this);
}
public boolean isRestrictedModeEnabled() {
return Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.RESTRICTED_NETWORKING_MODE, 0) != 0;
}
@Override
public void onChange(boolean selfChange) {
mListener.onChange(isRestrictedModeEnabled());
}
public interface RestrictedModeListener {
void onChange(boolean enabled);
}
}
public final StatLogger mStatLogger = new StatLogger(new String[]{
"updateNetworkEnabledNL()",
"isUidNetworkingBlocked()",
});
public NetworkPolicyManagerService(Context context, IActivityManager activityManager,
INetworkManagementService networkManagement) {
this(context, activityManager, networkManagement, AppGlobals.getPackageManager(),
getDefaultClock(), getDefaultSystemDir(), false);
}
private static @NonNull File getDefaultSystemDir() {
return new File(Environment.getDataDirectory(), "system");
}
private static @NonNull Clock getDefaultClock() {
return new BestClock(ZoneOffset.UTC, SystemClock.currentNetworkTimeClock(),
Clock.systemUTC());
}
public NetworkPolicyManagerService(Context context, IActivityManager activityManager,
INetworkManagementService networkManagement, IPackageManager pm, Clock clock,
File systemDir, boolean suppressDefaultPolicy) {
mContext = Objects.requireNonNull(context, "missing context");
mActivityManager = Objects.requireNonNull(activityManager, "missing activityManager");
mNetworkManager = Objects.requireNonNull(networkManagement, "missing networkManagement");
mPowerWhitelistManager = mContext.getSystemService(PowerWhitelistManager.class);
mClock = Objects.requireNonNull(clock, "missing Clock");
mUserManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
mCarrierConfigManager = mContext.getSystemService(CarrierConfigManager.class);
mIPm = pm;
HandlerThread thread = new HandlerThread(TAG);
thread.start();
mHandler = new Handler(thread.getLooper(), mHandlerCallback);
// We create another thread for the UID events, which are more time-critical.
mUidEventThread = new ServiceThread(TAG + ".uid", Process.THREAD_PRIORITY_FOREGROUND,
/*allowIo=*/ false);
mUidEventThread.start();
mUidEventHandler = new Handler(mUidEventThread.getLooper(), mUidEventHandlerCallback);
mSuppressDefaultPolicy = suppressDefaultPolicy;
mPolicyFile = new AtomicFile(new File(systemDir, "netpolicy.xml"), "net-policy");
mAppOps = context.getSystemService(AppOpsManager.class);
mMultipathPolicyTracker = new MultipathPolicyTracker(mContext, mHandler);
// Expose private service for system components to use.
LocalServices.addService(NetworkPolicyManagerInternal.class,
new NetworkPolicyManagerInternalImpl());
}
public void bindConnectivityManager(IConnectivityManager connManager) {
mConnManager = Objects.requireNonNull(connManager, "missing IConnectivityManager");
}
@GuardedBy("mUidRulesFirstLock")
private void updatePowerSaveWhitelistUL() {
int[] whitelist = mPowerWhitelistManager.getWhitelistedAppIds(/* includingIdle */ false);
mPowerSaveWhitelistExceptIdleAppIds.clear();
for (int uid : whitelist) {
mPowerSaveWhitelistExceptIdleAppIds.put(uid, true);
}
whitelist = mPowerWhitelistManager.getWhitelistedAppIds(/* includingIdle */ true);
mPowerSaveWhitelistAppIds.clear();
for (int uid : whitelist) {
mPowerSaveWhitelistAppIds.put(uid, true);
}
}
/**
* Allows pre-defined apps for restrict background, but only if the user didn't already
* revoked them.
*
* @return whether any uid has been added to allowlist.
*/
@GuardedBy("mUidRulesFirstLock")
boolean addDefaultRestrictBackgroundAllowlistUidsUL() {
final List<UserInfo> users = mUserManager.getUsers();
final int numberUsers = users.size();
boolean changed = false;
for (int i = 0; i < numberUsers; i++) {
final UserInfo user = users.get(i);
changed = addDefaultRestrictBackgroundAllowlistUidsUL(user.id) || changed;
}
return changed;
}
@GuardedBy("mUidRulesFirstLock")
private boolean addDefaultRestrictBackgroundAllowlistUidsUL(int userId) {
final SystemConfig sysConfig = SystemConfig.getInstance();
final PackageManager pm = mContext.getPackageManager();
final ArraySet<String> allowDataUsage = sysConfig.getAllowInDataUsageSave();
boolean changed = false;
for (int i = 0; i < allowDataUsage.size(); i++) {
final String pkg = allowDataUsage.valueAt(i);
if (LOGD)
Slog.d(TAG, "checking restricted background exemption for package " + pkg
+ " and user " + userId);
final ApplicationInfo app;
try {
app = pm.getApplicationInfoAsUser(pkg, PackageManager.MATCH_SYSTEM_ONLY, userId);
} catch (PackageManager.NameNotFoundException e) {
if (LOGD) Slog.d(TAG, "No ApplicationInfo for package " + pkg);
// Ignore it - some apps on allow-in-data-usage-save are optional.
continue;
}
if (!app.isPrivilegedApp()) {
Slog.e(TAG, "addDefaultRestrictBackgroundAllowlistUidsUL(): "
+ "skipping non-privileged app " + pkg);
continue;
}
final int uid = UserHandle.getUid(userId, app.uid);
mDefaultRestrictBackgroundAllowlistUids.append(uid, true);
if (LOGD)
Slog.d(TAG, "Adding uid " + uid + " (user " + userId + ") to default restricted "
+ "background allowlist. Revoked status: "
+ mRestrictBackgroundAllowlistRevokedUids.get(uid));
if (!mRestrictBackgroundAllowlistRevokedUids.get(uid)) {
if (LOGD)
Slog.d(TAG, "adding default package " + pkg + " (uid " + uid + " for user "
+ userId + ") to restrict background allowlist");
setUidPolicyUncheckedUL(uid, POLICY_ALLOW_METERED_BACKGROUND, false);
changed = true;
}
}
return changed;
}
private void initService(CountDownLatch initCompleteSignal) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "systemReady");
final int oldPriority = Process.getThreadPriority(Process.myTid());
try {
// Boost thread's priority during system server init
Process.setThreadPriority(Process.THREAD_PRIORITY_FOREGROUND);
if (!isBandwidthControlEnabled()) {
Slog.w(TAG, "bandwidth controls disabled, unable to enforce policy");
return;
}
mUsageStats = LocalServices.getService(UsageStatsManagerInternal.class);
mAppStandby = LocalServices.getService(AppStandbyInternal.class);
mNetworkStats = LocalServices.getService(NetworkStatsManagerInternal.class);
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
updatePowerSaveWhitelistUL();
mPowerManagerInternal = LocalServices.getService(PowerManagerInternal.class);
mPowerManagerInternal.registerLowPowerModeObserver(
new PowerManagerInternal.LowPowerModeListener() {
@Override
public int getServiceType() {
return ServiceType.NETWORK_FIREWALL;
}
@Override
public void onLowPowerModeChanged(PowerSaveState result) {
final boolean enabled = result.batterySaverEnabled;
if (LOGD) {
Slog.d(TAG, "onLowPowerModeChanged(" + enabled + ")");
}
synchronized (mUidRulesFirstLock) {
if (mRestrictPower != enabled) {
mRestrictPower = enabled;
updateRulesForRestrictPowerUL();
}
}
}
});
mRestrictPower = mPowerManagerInternal.getLowPowerState(
ServiceType.NETWORK_FIREWALL).batterySaverEnabled;
mRestrictedModeObserver = new RestrictedModeObserver(mContext,
enabled -> {
synchronized (mUidRulesFirstLock) {
mRestrictedNetworkingMode = enabled;
updateRestrictedModeAllowlistUL();
}
});
mRestrictedNetworkingMode = mRestrictedModeObserver.isRestrictedModeEnabled();
mSystemReady = true;
waitForAdminData();
// read policy from disk
readPolicyAL();
// Update the restrictBackground if battery saver is turned on
mRestrictBackgroundBeforeBsm = mLoadedRestrictBackground;
mRestrictBackgroundLowPowerMode = mPowerManagerInternal
.getLowPowerState(ServiceType.DATA_SAVER).batterySaverEnabled;
if (mRestrictBackgroundLowPowerMode && !mLoadedRestrictBackground) {
mLoadedRestrictBackground = true;
}
mPowerManagerInternal.registerLowPowerModeObserver(
new PowerManagerInternal.LowPowerModeListener() {
@Override
public int getServiceType() {
return ServiceType.DATA_SAVER;
}
@Override
public void onLowPowerModeChanged(PowerSaveState result) {
synchronized (mUidRulesFirstLock) {
updateRestrictBackgroundByLowPowerModeUL(result);
}
}
});
if (addDefaultRestrictBackgroundAllowlistUidsUL()) {
writePolicyAL();
}
setRestrictBackgroundUL(mLoadedRestrictBackground, "init_service");
updateRulesForGlobalChangeAL(false);
updateNotificationsNL();
}
}
mActivityManagerInternal = LocalServices.getService(ActivityManagerInternal.class);
try {
mActivityManager.registerUidObserver(mUidObserver,
ActivityManager.UID_OBSERVER_PROCSTATE|ActivityManager.UID_OBSERVER_GONE,
NetworkPolicyManager.FOREGROUND_THRESHOLD_STATE, "android");
mNetworkManager.registerObserver(mAlertObserver);
} catch (RemoteException e) {
// ignored; both services live in system_server
}
// listen for changes to power save allowlist
final IntentFilter whitelistFilter = new IntentFilter(
PowerManager.ACTION_POWER_SAVE_WHITELIST_CHANGED);
mContext.registerReceiver(mPowerSaveWhitelistReceiver, whitelistFilter, null, mHandler);
// watch for network interfaces to be claimed
final IntentFilter connFilter = new IntentFilter(CONNECTIVITY_ACTION);
mContext.registerReceiver(mConnReceiver, connFilter, NETWORK_STACK, mHandler);
// listen for package changes to update policy
final IntentFilter packageFilter = new IntentFilter();
packageFilter.addAction(ACTION_PACKAGE_ADDED);
packageFilter.addDataScheme("package");
mContext.registerReceiver(mPackageReceiver, packageFilter, null, mHandler);
// listen for UID changes to update policy
mContext.registerReceiver(
mUidRemovedReceiver, new IntentFilter(ACTION_UID_REMOVED), null, mHandler);
// listen for user changes to update policy
final IntentFilter userFilter = new IntentFilter();
userFilter.addAction(ACTION_USER_ADDED);
userFilter.addAction(ACTION_USER_REMOVED);
mContext.registerReceiver(mUserReceiver, userFilter, null, mHandler);
// listen for stats update events
final IntentFilter statsFilter = new IntentFilter(ACTION_NETWORK_STATS_UPDATED);
mContext.registerReceiver(
mStatsReceiver, statsFilter, READ_NETWORK_USAGE_HISTORY, mHandler);
// listen for restrict background changes from notifications
final IntentFilter allowFilter = new IntentFilter(ACTION_ALLOW_BACKGROUND);
mContext.registerReceiver(mAllowReceiver, allowFilter, MANAGE_NETWORK_POLICY, mHandler);
// Listen for snooze from notifications
mContext.registerReceiver(mSnoozeReceiver,
new IntentFilter(ACTION_SNOOZE_WARNING), MANAGE_NETWORK_POLICY, mHandler);
mContext.registerReceiver(mSnoozeReceiver,
new IntentFilter(ACTION_SNOOZE_RAPID), MANAGE_NETWORK_POLICY, mHandler);
// listen for configured wifi networks to be loaded
final IntentFilter wifiFilter =
new IntentFilter(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION);
mContext.registerReceiver(mWifiReceiver, wifiFilter, null, mHandler);
// listen for carrier config changes to update data cycle information
final IntentFilter carrierConfigFilter = new IntentFilter(
ACTION_CARRIER_CONFIG_CHANGED);
mContext.registerReceiver(mCarrierConfigReceiver, carrierConfigFilter, null, mHandler);
// listen for meteredness changes
mContext.getSystemService(ConnectivityManager.class).registerNetworkCallback(
new NetworkRequest.Builder().build(), mNetworkCallback);
mAppStandby.addListener(new NetPolicyAppIdleStateChangeListener());
synchronized (mUidRulesFirstLock) {
updateRulesForAppIdleParoleUL();
}
// Listen for subscriber changes
mContext.getSystemService(SubscriptionManager.class).addOnSubscriptionsChangedListener(
new HandlerExecutor(mHandler),
new OnSubscriptionsChangedListener() {
@Override
public void onSubscriptionsChanged() {
updateNetworksInternal();
}
});
// tell systemReady() that the service has been initialized
initCompleteSignal.countDown();
} finally {
// Restore the default priority after init is done
Process.setThreadPriority(oldPriority);
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
public CountDownLatch networkScoreAndNetworkManagementServiceReady() {
mNetworkManagerReady = true;
final CountDownLatch initCompleteSignal = new CountDownLatch(1);
mHandler.post(() -> initService(initCompleteSignal));
return initCompleteSignal;
}
public void systemReady(CountDownLatch initCompleteSignal) {
// wait for initService to complete
try {
if (!initCompleteSignal.await(30, TimeUnit.SECONDS)) {
throw new IllegalStateException("Service " + TAG +" init timeout");
}
mMultipathPolicyTracker.start();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new IllegalStateException("Service " + TAG + " init interrupted", e);
}
}
final private IUidObserver mUidObserver = new IUidObserver.Stub() {
@Override public void onUidStateChanged(int uid, int procState, long procStateSeq,
int capability) {
mUidEventHandler.obtainMessage(UID_MSG_STATE_CHANGED,
uid, procState, procStateSeq).sendToTarget();
}
@Override public void onUidGone(int uid, boolean disabled) {
mUidEventHandler.obtainMessage(UID_MSG_GONE, uid, 0).sendToTarget();
}
@Override public void onUidActive(int uid) {
}
@Override public void onUidIdle(int uid, boolean disabled) {
}
@Override public void onUidCachedChanged(int uid, boolean cached) {
}
};
final private BroadcastReceiver mPowerSaveWhitelistReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// on background handler thread, and POWER_SAVE_WHITELIST_CHANGED is protected
synchronized (mUidRulesFirstLock) {
updatePowerSaveWhitelistUL();
updateRulesForRestrictPowerUL();
updateRulesForAppIdleUL();
}
}
};
final private BroadcastReceiver mPackageReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// on background handler thread, and PACKAGE_ADDED is protected
final String action = intent.getAction();
final int uid = intent.getIntExtra(EXTRA_UID, -1);
if (uid == -1) return;
if (ACTION_PACKAGE_ADDED.equals(action)) {
// update rules for UID, since it might be subject to
// global background data policy
if (LOGV) Slog.v(TAG, "ACTION_PACKAGE_ADDED for uid=" + uid);
// Clear the cache for the app
synchronized (mUidRulesFirstLock) {
mInternetPermissionMap.delete(uid);
updateRestrictionRulesForUidUL(uid);
}
}
}
};
final private BroadcastReceiver mUidRemovedReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// on background handler thread, and UID_REMOVED is protected
final int uid = intent.getIntExtra(EXTRA_UID, -1);
if (uid == -1) return;
// remove any policy and update rules to clean up
if (LOGV) Slog.v(TAG, "ACTION_UID_REMOVED for uid=" + uid);
synchronized (mUidRulesFirstLock) {
onUidDeletedUL(uid);
synchronized (mNetworkPoliciesSecondLock) {
writePolicyAL();
}
}
}
};
final private BroadcastReceiver mUserReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// on background handler thread, and USER_ADDED and USER_REMOVED
// broadcasts are protected
final String action = intent.getAction();
final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1);
if (userId == -1) return;
switch (action) {
case ACTION_USER_REMOVED:
case ACTION_USER_ADDED:
synchronized (mUidRulesFirstLock) {
// Remove any persistable state for the given user; both cleaning up after a
// USER_REMOVED, and one last check during USER_ADDED
removeUserStateUL(userId, true, false);
// Removing outside removeUserStateUL since that can also be called when
// user resets app preferences.
mMeteredRestrictedUids.remove(userId);
if (action == ACTION_USER_ADDED) {
// Add apps that are allowed by default.
addDefaultRestrictBackgroundAllowlistUidsUL(userId);
}
// Update global restrict for that user
synchronized (mNetworkPoliciesSecondLock) {
updateRulesForGlobalChangeAL(true);
}
}
break;
}
}
};
/**
* Receiver that watches for {@link INetworkStatsService} updates, which we
* use to check against {@link NetworkPolicy#warningBytes}.
*/
final private BroadcastReceiver mStatsReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// on background handler thread, and verified
// READ_NETWORK_USAGE_HISTORY permission above.
synchronized (mNetworkPoliciesSecondLock) {
updateNetworkRulesNL();
updateNetworkEnabledNL();
updateNotificationsNL();
}
}
};
/**
* Receiver that watches for {@link Notification} control of
* {@link #mRestrictBackground}.
*/
final private BroadcastReceiver mAllowReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// on background handler thread, and verified MANAGE_NETWORK_POLICY
// permission above.
setRestrictBackground(false);
}
};
/**
* Receiver that watches for {@link Notification} control of
* {@link NetworkPolicy#lastWarningSnooze}.
*/
final private BroadcastReceiver mSnoozeReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// on background handler thread, and verified MANAGE_NETWORK_POLICY
// permission above.
final NetworkTemplate template = intent.getParcelableExtra(EXTRA_NETWORK_TEMPLATE);
if (ACTION_SNOOZE_WARNING.equals(intent.getAction())) {
performSnooze(template, TYPE_WARNING);
} else if (ACTION_SNOOZE_RAPID.equals(intent.getAction())) {
performSnooze(template, TYPE_RAPID);
}
}
};
/**
* Receiver that watches for {@link WifiConfiguration} to be loaded so that
* we can perform upgrade logic. After initial upgrade logic, it updates
* {@link #mMeteredIfaces} based on configuration changes.
*/
final private BroadcastReceiver mWifiReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
upgradeWifiMeteredOverrideAL();
}
}
// Only need to perform upgrade logic once
mContext.unregisterReceiver(this);
}
};
private static boolean updateCapabilityChange(SparseBooleanArray lastValues, boolean newValue,
Network network) {
final boolean lastValue = lastValues.get(network.netId, false);
final boolean changed = (lastValue != newValue) || lastValues.indexOfKey(network.netId) < 0;
if (changed) {
lastValues.put(network.netId, newValue);
}
return changed;
}
private final NetworkCallback mNetworkCallback = new NetworkCallback() {
@Override
public void onCapabilitiesChanged(Network network,
NetworkCapabilities networkCapabilities) {
if (network == null || networkCapabilities == null) return;
synchronized (mNetworkPoliciesSecondLock) {
final boolean newMetered = !networkCapabilities
.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
final boolean meteredChanged = updateCapabilityChange(
mNetworkMetered, newMetered, network);
final boolean newRoaming = !networkCapabilities
.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING);
final boolean roamingChanged = updateCapabilityChange(
mNetworkRoaming, newRoaming, network);
if (meteredChanged || roamingChanged) {
mLogger.meterednessChanged(network.netId, newMetered);
updateNetworkRulesNL();
}
}
}
};
/**
* Observer that watches for {@link INetworkManagementService} alerts.
*/
final private INetworkManagementEventObserver mAlertObserver
= new BaseNetworkObserver() {
@Override
public void limitReached(String limitName, String iface) {
// only someone like NMS should be calling us
NetworkStack.checkNetworkStackPermission(mContext);
if (!LIMIT_GLOBAL_ALERT.equals(limitName)) {
mHandler.obtainMessage(MSG_LIMIT_REACHED, iface).sendToTarget();
}
}
};
/**
* Check {@link NetworkPolicy} against current {@link INetworkStatsService}
* to show visible notifications as needed.
*/
@GuardedBy("mNetworkPoliciesSecondLock")
void updateNotificationsNL() {
if (LOGV) Slog.v(TAG, "updateNotificationsNL()");
Trace.traceBegin(TRACE_TAG_NETWORK, "updateNotificationsNL");
// keep track of previously active notifications
final ArraySet<NotificationId> beforeNotifs = new ArraySet<NotificationId>(mActiveNotifs);
mActiveNotifs.clear();
// TODO: when switching to kernel notifications, compute next future
// cycle boundary to recompute notifications.
// examine stats for each active policy
final long now = mClock.millis();
for (int i = mNetworkPolicy.size()-1; i >= 0; i--) {
final NetworkPolicy policy = mNetworkPolicy.valueAt(i);
final int subId = findRelevantSubIdNL(policy.template);
// ignore policies that aren't relevant to user
if (subId == INVALID_SUBSCRIPTION_ID) continue;
if (!policy.hasCycle()) continue;
final Pair<ZonedDateTime, ZonedDateTime> cycle = NetworkPolicyManager
.cycleIterator(policy).next();
final long cycleStart = cycle.first.toInstant().toEpochMilli();
final long cycleEnd = cycle.second.toInstant().toEpochMilli();
final long totalBytes = getTotalBytes(policy.template, cycleStart, cycleEnd);
// Carrier might want to manage notifications themselves
final PersistableBundle config = mSubIdToCarrierConfig.get(subId);
if (!CarrierConfigManager.isConfigForIdentifiedCarrier(config)) {
if (LOGV) Slog.v(TAG, "isConfigForIdentifiedCarrier returned false");
// Don't show notifications until we confirm that the loaded config is from an
// identified carrier, which may want to manage their own notifications. This method
// should be called every time the carrier config changes anyways, and there's no
// reason to alert if there isn't a carrier.
return;
}
final boolean notifyWarning = getBooleanDefeatingNullable(config,
KEY_DATA_WARNING_NOTIFICATION_BOOL, true);
final boolean notifyLimit = getBooleanDefeatingNullable(config,
KEY_DATA_LIMIT_NOTIFICATION_BOOL, true);
final boolean notifyRapid = getBooleanDefeatingNullable(config,
KEY_DATA_RAPID_NOTIFICATION_BOOL, true);
// Notify when data usage is over warning
if (notifyWarning) {
if (policy.isOverWarning(totalBytes) && !policy.isOverLimit(totalBytes)) {
final boolean snoozedThisCycle = policy.lastWarningSnooze >= cycleStart;
if (!snoozedThisCycle) {
enqueueNotification(policy, TYPE_WARNING, totalBytes, null);
}
}
}
// Notify when data usage is over limit
if (notifyLimit) {
if (policy.isOverLimit(totalBytes)) {
final boolean snoozedThisCycle = policy.lastLimitSnooze >= cycleStart;
if (snoozedThisCycle) {
enqueueNotification(policy, TYPE_LIMIT_SNOOZED, totalBytes, null);
} else {
enqueueNotification(policy, TYPE_LIMIT, totalBytes, null);
notifyOverLimitNL(policy.template);
}
} else {
notifyUnderLimitNL(policy.template);
}
}
// Warn if average usage over last 4 days is on track to blow pretty
// far past the plan limits.
if (notifyRapid && policy.limitBytes != LIMIT_DISABLED) {
final long recentDuration = TimeUnit.DAYS.toMillis(4);
final long recentStart = now - recentDuration;
final long recentEnd = now;
final long recentBytes = getTotalBytes(policy.template, recentStart, recentEnd);
final long cycleDuration = cycleEnd - cycleStart;
final long projectedBytes = (recentBytes * cycleDuration) / recentDuration;
final long alertBytes = (policy.limitBytes * 3) / 2;
if (LOGD) {
Slog.d(TAG, "Rapid usage considering recent " + recentBytes + " projected "
+ projectedBytes + " alert " + alertBytes);
}
final boolean snoozedRecently = policy.lastRapidSnooze >= now
- DateUtils.DAY_IN_MILLIS;
if (projectedBytes > alertBytes && !snoozedRecently) {
enqueueNotification(policy, TYPE_RAPID, 0,
findRapidBlame(policy.template, recentStart, recentEnd));
}
}
}
// cancel stale notifications that we didn't renew above
for (int i = beforeNotifs.size()-1; i >= 0; i--) {
final NotificationId notificationId = beforeNotifs.valueAt(i);
if (!mActiveNotifs.contains(notificationId)) {
cancelNotification(notificationId);
}
}
Trace.traceEnd(TRACE_TAG_NETWORK);
}
/**
* Attempt to find a specific app to blame for rapid data usage during the
* given time period.
*/
private @Nullable ApplicationInfo findRapidBlame(NetworkTemplate template,
long start, long end) {
long totalBytes = 0;
long maxBytes = 0;
int maxUid = 0;
final NetworkStats stats = getNetworkUidBytes(template, start, end);
NetworkStats.Entry entry = null;
for (int i = 0; i < stats.size(); i++) {
entry = stats.getValues(i, entry);
final long bytes = entry.rxBytes + entry.txBytes;
totalBytes += bytes;
if (bytes > maxBytes) {
maxBytes = bytes;
maxUid = entry.uid;
}
}
// Only point blame if the majority of usage was done by a single app.
// TODO: support shared UIDs
if (maxBytes > 0 && maxBytes > totalBytes / 2) {
final String[] packageNames = mContext.getPackageManager().getPackagesForUid(maxUid);
if (packageNames != null && packageNames.length == 1) {
try {
return mContext.getPackageManager().getApplicationInfo(packageNames[0],
MATCH_ANY_USER | MATCH_DISABLED_COMPONENTS | MATCH_DIRECT_BOOT_AWARE
| MATCH_DIRECT_BOOT_UNAWARE | MATCH_UNINSTALLED_PACKAGES);
} catch (NameNotFoundException ignored) {
}
}
}
return null;
}
/**
* Test if given {@link NetworkTemplate} is relevant to user based on
* current device state, such as when
* {@link TelephonyManager#getSubscriberId()} matches. This is regardless of
* data connection status.
*
* @return relevant subId, or {@link #INVALID_SUBSCRIPTION_ID} when no
* matching subId found.
*/
@GuardedBy("mNetworkPoliciesSecondLock")
private int findRelevantSubIdNL(NetworkTemplate template) {
// Mobile template is relevant when any active subscriber matches
for (int i = 0; i < mSubIdToSubscriberId.size(); i++) {
final int subId = mSubIdToSubscriberId.keyAt(i);
final String subscriberId = mSubIdToSubscriberId.valueAt(i);
final NetworkIdentity probeIdent = new NetworkIdentity(TYPE_MOBILE,
TelephonyManager.NETWORK_TYPE_UNKNOWN, subscriberId, null, false, true,
true);
if (template.matches(probeIdent)) {
return subId;
}
}
return INVALID_SUBSCRIPTION_ID;
}
/**
* Notify that given {@link NetworkTemplate} is over
* {@link NetworkPolicy#limitBytes}, potentially showing dialog to user.
*/
@GuardedBy("mNetworkPoliciesSecondLock")
private void notifyOverLimitNL(NetworkTemplate template) {
if (!mOverLimitNotified.contains(template)) {
mContext.startActivity(buildNetworkOverLimitIntent(mContext.getResources(), template));
mOverLimitNotified.add(template);
}
}
@GuardedBy("mNetworkPoliciesSecondLock")
private void notifyUnderLimitNL(NetworkTemplate template) {
mOverLimitNotified.remove(template);
}
/**
* Show notification for combined {@link NetworkPolicy} and specific type,
* like {@link #TYPE_LIMIT}. Okay to call multiple times.
*/
private void enqueueNotification(NetworkPolicy policy, int type, long totalBytes,
ApplicationInfo rapidBlame) {
final NotificationId notificationId = new NotificationId(policy, type);
final Notification.Builder builder =
new Notification.Builder(mContext, SystemNotificationChannels.NETWORK_ALERTS);
builder.setOnlyAlertOnce(true);
builder.setWhen(0L);
builder.setColor(mContext.getColor(
com.android.internal.R.color.system_notification_accent_color));
final Resources res = mContext.getResources();
final CharSequence title;
final CharSequence body;
switch (type) {
case TYPE_WARNING: {
title = res.getText(R.string.data_usage_warning_title);
body = res.getString(R.string.data_usage_warning_body,
Formatter.formatFileSize(mContext, totalBytes, Formatter.FLAG_IEC_UNITS));
builder.setSmallIcon(R.drawable.stat_notify_error);
final Intent snoozeIntent = buildSnoozeWarningIntent(policy.template);
builder.setDeleteIntent(PendingIntent.getBroadcast(
mContext, 0, snoozeIntent, PendingIntent.FLAG_UPDATE_CURRENT));
final Intent viewIntent = buildViewDataUsageIntent(res, policy.template);
// TODO: Resolve to single code path.
if (UserManager.isHeadlessSystemUserMode()) {
builder.setContentIntent(PendingIntent.getActivityAsUser(
mContext, 0, viewIntent, PendingIntent.FLAG_UPDATE_CURRENT,
/* options= */ null, UserHandle.CURRENT));
} else {
builder.setContentIntent(PendingIntent.getActivity(
mContext, 0, viewIntent, PendingIntent.FLAG_UPDATE_CURRENT));
}
break;
}
case TYPE_LIMIT: {
switch (policy.template.getMatchRule()) {
case MATCH_MOBILE:
title = res.getText(R.string.data_usage_mobile_limit_title);
break;
case MATCH_WIFI:
title = res.getText(R.string.data_usage_wifi_limit_title);
break;
default:
return;
}
body = res.getText(R.string.data_usage_limit_body);
builder.setOngoing(true);
builder.setSmallIcon(R.drawable.stat_notify_disabled_data);
final Intent intent = buildNetworkOverLimitIntent(res, policy.template);
// TODO: Resolve to single code path.
if (UserManager.isHeadlessSystemUserMode()) {
builder.setContentIntent(PendingIntent.getActivityAsUser(
mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT,
/* options= */ null, UserHandle.CURRENT));
} else {
builder.setContentIntent(PendingIntent.getActivity(
mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT));
}
break;
}
case TYPE_LIMIT_SNOOZED: {
switch (policy.template.getMatchRule()) {
case MATCH_MOBILE:
title = res.getText(R.string.data_usage_mobile_limit_snoozed_title);
break;
case MATCH_WIFI:
title = res.getText(R.string.data_usage_wifi_limit_snoozed_title);
break;
default:
return;
}
final long overBytes = totalBytes - policy.limitBytes;
body = res.getString(R.string.data_usage_limit_snoozed_body,
Formatter.formatFileSize(mContext, overBytes, Formatter.FLAG_IEC_UNITS));
builder.setOngoing(true);
builder.setSmallIcon(R.drawable.stat_notify_error);
builder.setChannelId(SystemNotificationChannels.NETWORK_STATUS);
final Intent intent = buildViewDataUsageIntent(res, policy.template);
// TODO: Resolve to single code path.
if (UserManager.isHeadlessSystemUserMode()) {
builder.setContentIntent(PendingIntent.getActivityAsUser(
mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT,
/* options= */ null, UserHandle.CURRENT));
} else {
builder.setContentIntent(PendingIntent.getActivity(
mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT));
}
break;
}
case TYPE_RAPID: {
title = res.getText(R.string.data_usage_rapid_title);
if (rapidBlame != null) {
body = res.getString(R.string.data_usage_rapid_app_body,
rapidBlame.loadLabel(mContext.getPackageManager()));
} else {
body = res.getString(R.string.data_usage_rapid_body);
}
builder.setSmallIcon(R.drawable.stat_notify_error);
final Intent snoozeIntent = buildSnoozeRapidIntent(policy.template);
builder.setDeleteIntent(PendingIntent.getBroadcast(
mContext, 0, snoozeIntent, PendingIntent.FLAG_UPDATE_CURRENT));
final Intent viewIntent = buildViewDataUsageIntent(res, policy.template);
// TODO: Resolve to single code path.
if (UserManager.isHeadlessSystemUserMode()) {
builder.setContentIntent(PendingIntent.getActivityAsUser(
mContext, 0, viewIntent, PendingIntent.FLAG_UPDATE_CURRENT,
/* options= */ null, UserHandle.CURRENT));
} else {
builder.setContentIntent(PendingIntent.getActivity(
mContext, 0, viewIntent, PendingIntent.FLAG_UPDATE_CURRENT));
}
break;
}
default: {
return;
}
}
builder.setTicker(title);
builder.setContentTitle(title);
builder.setContentText(body);
builder.setStyle(new Notification.BigTextStyle().bigText(body));
mContext.getSystemService(NotificationManager.class).notifyAsUser(notificationId.getTag(),
notificationId.getId(), builder.build(), UserHandle.ALL);
mActiveNotifs.add(notificationId);
}
private void cancelNotification(NotificationId notificationId) {
mContext.getSystemService(NotificationManager.class).cancel(notificationId.getTag(),
notificationId.getId());
}
/**
* Receiver that watches for {@link IConnectivityManager} to claim network
* interfaces. Used to apply {@link NetworkPolicy} to matching networks.
*/
private BroadcastReceiver mConnReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// on background handler thread, and verified NETWORK_STACK
// permission above.
updateNetworksInternal();
}
};
private void updateNetworksInternal() {
// Get all of our cross-process communication with telephony out of
// the way before we acquire internal locks.
updateSubscriptions();
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
ensureActiveMobilePolicyAL();
normalizePoliciesNL();
updateNetworkEnabledNL();
updateNetworkRulesNL();
updateNotificationsNL();
}
}
}
@VisibleForTesting
void updateNetworks() throws InterruptedException {
updateNetworksInternal();
final CountDownLatch latch = new CountDownLatch(1);
mHandler.post(() -> {
latch.countDown();
});
latch.await(5, TimeUnit.SECONDS);
}
@VisibleForTesting
Handler getHandlerForTesting() {
return mHandler;
}
/**
* Update mobile policies with data cycle information from {@link CarrierConfigManager}
* if necessary.
*
* @param subId that has its associated NetworkPolicy updated if necessary
* @return if any policies were updated
*/
@GuardedBy("mNetworkPoliciesSecondLock")
private boolean maybeUpdateMobilePolicyCycleAL(int subId, String subscriberId) {
if (LOGV) Slog.v(TAG, "maybeUpdateMobilePolicyCycleAL()");
// find and update the mobile NetworkPolicy for this subscriber id
boolean policyUpdated = false;
final NetworkIdentity probeIdent = new NetworkIdentity(TYPE_MOBILE,
TelephonyManager.NETWORK_TYPE_UNKNOWN, subscriberId, null, false, true, true);
for (int i = mNetworkPolicy.size() - 1; i >= 0; i--) {
final NetworkTemplate template = mNetworkPolicy.keyAt(i);
if (template.matches(probeIdent)) {
final NetworkPolicy policy = mNetworkPolicy.valueAt(i);
policyUpdated |= updateDefaultMobilePolicyAL(subId, policy);
}
}
return policyUpdated;
}
/**
* Returns the cycle day that should be used for a mobile NetworkPolicy.
*
* It attempts to get an appropriate cycle day from the passed in CarrierConfig. If it's unable
* to do so, it returns the fallback value.
*
* @param config The CarrierConfig to read the value from.
* @param fallbackCycleDay to return if the CarrierConfig can't be read.
* @return cycleDay to use in the mobile NetworkPolicy.
*/
@VisibleForTesting
int getCycleDayFromCarrierConfig(@Nullable PersistableBundle config,
int fallbackCycleDay) {
if (config == null) {
return fallbackCycleDay;
}
int cycleDay =
config.getInt(CarrierConfigManager.KEY_MONTHLY_DATA_CYCLE_DAY_INT);
if (cycleDay == DATA_CYCLE_USE_PLATFORM_DEFAULT) {
return fallbackCycleDay;
}
// validate cycleDay value
final Calendar cal = Calendar.getInstance();
if (cycleDay < cal.getMinimum(Calendar.DAY_OF_MONTH) ||
cycleDay > cal.getMaximum(Calendar.DAY_OF_MONTH)) {
Slog.e(TAG, "Invalid date in "
+ "CarrierConfigManager.KEY_MONTHLY_DATA_CYCLE_DAY_INT: " + cycleDay);
return fallbackCycleDay;
}
return cycleDay;
}
/**
* Returns the warning bytes that should be used for a mobile NetworkPolicy.
*
* It attempts to get an appropriate value from the passed in CarrierConfig. If it's unable
* to do so, it returns the fallback value.
*
* @param config The CarrierConfig to read the value from.
* @param fallbackWarningBytes to return if the CarrierConfig can't be read.
* @return warningBytes to use in the mobile NetworkPolicy.
*/
@VisibleForTesting
long getWarningBytesFromCarrierConfig(@Nullable PersistableBundle config,
long fallbackWarningBytes) {
if (config == null) {
return fallbackWarningBytes;
}
long warningBytes =
config.getLong(CarrierConfigManager.KEY_DATA_WARNING_THRESHOLD_BYTES_LONG);
if (warningBytes == DATA_CYCLE_THRESHOLD_DISABLED) {
return WARNING_DISABLED;
} else if (warningBytes == DATA_CYCLE_USE_PLATFORM_DEFAULT) {
return getPlatformDefaultWarningBytes();
} else if (warningBytes < 0) {
Slog.e(TAG, "Invalid value in "
+ "CarrierConfigManager.KEY_DATA_WARNING_THRESHOLD_BYTES_LONG; expected a "
+ "non-negative value but got: " + warningBytes);
return fallbackWarningBytes;
}
return warningBytes;
}
/**
* Returns the limit bytes that should be used for a mobile NetworkPolicy.
*
* It attempts to get an appropriate value from the passed in CarrierConfig. If it's unable
* to do so, it returns the fallback value.
*
* @param config The CarrierConfig to read the value from.
* @param fallbackLimitBytes to return if the CarrierConfig can't be read.
* @return limitBytes to use in the mobile NetworkPolicy.
*/
@VisibleForTesting
long getLimitBytesFromCarrierConfig(@Nullable PersistableBundle config,
long fallbackLimitBytes) {
if (config == null) {
return fallbackLimitBytes;
}
long limitBytes =
config.getLong(CarrierConfigManager.KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG);
if (limitBytes == DATA_CYCLE_THRESHOLD_DISABLED) {
return LIMIT_DISABLED;
} else if (limitBytes == DATA_CYCLE_USE_PLATFORM_DEFAULT) {
return getPlatformDefaultLimitBytes();
} else if (limitBytes < 0) {
Slog.e(TAG, "Invalid value in "
+ "CarrierConfigManager.KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG; expected a "
+ "non-negative value but got: " + limitBytes);
return fallbackLimitBytes;
}
return limitBytes;
}
/**
* Receiver that watches for {@link CarrierConfigManager} to be changed.
*/
private BroadcastReceiver mCarrierConfigReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// No need to do a permission check, because the ACTION_CARRIER_CONFIG_CHANGED
// broadcast is protected and can't be spoofed. Runs on a background handler thread.
if (!intent.hasExtra(CarrierConfigManager.EXTRA_SUBSCRIPTION_INDEX)) {
return;
}
final int subId = intent.getIntExtra(CarrierConfigManager.EXTRA_SUBSCRIPTION_INDEX, -1);
// Get all of our cross-process communication with telephony out of
// the way before we acquire internal locks.
updateSubscriptions();
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
final String subscriberId = mSubIdToSubscriberId.get(subId, null);
if (subscriberId != null) {
ensureActiveMobilePolicyAL(subId, subscriberId);
maybeUpdateMobilePolicyCycleAL(subId, subscriberId);
} else {
Slog.wtf(TAG, "Missing subscriberId for subId " + subId);
}
// update network and notification rules, as the data cycle changed and it's
// possible that we should be triggering warnings/limits now
handleNetworkPoliciesUpdateAL(true);
}
}
}
};
/**
* Handles all tasks that need to be run after a new network policy has been set, or an existing
* one has been updated.
*
* @param shouldNormalizePolicies true iff network policies need to be normalized after the
* update.
*/
@GuardedBy({"mUidRulesFirstLock", "mNetworkPoliciesSecondLock"})
void handleNetworkPoliciesUpdateAL(boolean shouldNormalizePolicies) {
if (shouldNormalizePolicies) {
normalizePoliciesNL();
}
updateNetworkEnabledNL();
updateNetworkRulesNL();
updateNotificationsNL();
writePolicyAL();
}
/**
* Proactively control network data connections when they exceed
* {@link NetworkPolicy#limitBytes}.
*/
@GuardedBy("mNetworkPoliciesSecondLock")
void updateNetworkEnabledNL() {
if (LOGV) Slog.v(TAG, "updateNetworkEnabledNL()");
Trace.traceBegin(TRACE_TAG_NETWORK, "updateNetworkEnabledNL");
// TODO: reset any policy-disabled networks when any policy is removed
// completely, which is currently rare case.
final long startTime = mStatLogger.getTime();
for (int i = mNetworkPolicy.size()-1; i >= 0; i--) {
final NetworkPolicy policy = mNetworkPolicy.valueAt(i);
// shortcut when policy has no limit
if (policy.limitBytes == LIMIT_DISABLED || !policy.hasCycle()) {
setNetworkTemplateEnabled(policy.template, true);
continue;
}
final Pair<ZonedDateTime, ZonedDateTime> cycle = NetworkPolicyManager
.cycleIterator(policy).next();
final long start = cycle.first.toInstant().toEpochMilli();
final long end = cycle.second.toInstant().toEpochMilli();
final long totalBytes = getTotalBytes(policy.template, start, end);
// disable data connection when over limit and not snoozed
final boolean overLimitWithoutSnooze = policy.isOverLimit(totalBytes)
&& policy.lastLimitSnooze < start;
final boolean networkEnabled = !overLimitWithoutSnooze;
setNetworkTemplateEnabled(policy.template, networkEnabled);
}
mStatLogger.logDurationStat(Stats.UPDATE_NETWORK_ENABLED, startTime);
Trace.traceEnd(TRACE_TAG_NETWORK);
}
/**
* Proactively disable networks that match the given
* {@link NetworkTemplate}.
*/
private void setNetworkTemplateEnabled(NetworkTemplate template, boolean enabled) {
// Don't call setNetworkTemplateEnabledInner() directly because we may have a lock
// held. Call it via the handler.
mHandler.obtainMessage(MSG_SET_NETWORK_TEMPLATE_ENABLED, enabled ? 1 : 0, 0, template)
.sendToTarget();
}
private void setNetworkTemplateEnabledInner(NetworkTemplate template, boolean enabled) {
// TODO: reach into ConnectivityManager to proactively disable bringing
// up this network, since we know that traffic will be blocked.
if (template.getMatchRule() == MATCH_MOBILE) {
// If mobile data usage hits the limit or if the user resumes the data, we need to
// notify telephony.
final IntArray matchingSubIds = new IntArray();
synchronized (mNetworkPoliciesSecondLock) {
for (int i = 0; i < mSubIdToSubscriberId.size(); i++) {
final int subId = mSubIdToSubscriberId.keyAt(i);
final String subscriberId = mSubIdToSubscriberId.valueAt(i);
final NetworkIdentity probeIdent = new NetworkIdentity(TYPE_MOBILE,
TelephonyManager.NETWORK_TYPE_UNKNOWN, subscriberId, null, false, true,
true);
// Template is matched when subscriber id matches.
if (template.matches(probeIdent)) {
matchingSubIds.add(subId);
}
}
}
// Only talk with telephony outside of locks
final TelephonyManager tm = mContext.getSystemService(TelephonyManager.class);
for (int i = 0; i < matchingSubIds.size(); i++) {
final int subId = matchingSubIds.get(i);
tm.createForSubscriptionId(subId).setPolicyDataEnabled(enabled);
}
}
}
/**
* Collect all ifaces from a {@link NetworkState} into the given set.
*/
private static void collectIfaces(ArraySet<String> ifaces, NetworkState state) {
final String baseIface = state.linkProperties.getInterfaceName();
if (baseIface != null) {
ifaces.add(baseIface);
}
for (LinkProperties stackedLink : state.linkProperties.getStackedLinks()) {
final String stackedIface = stackedLink.getInterfaceName();
if (stackedIface != null) {
ifaces.add(stackedIface);
}
}
}
/**
* Examine all currently active subscriptions from
* {@link SubscriptionManager#getActiveSubscriptionInfoList()} and update
* internal data structures.
* <p>
* Callers <em>must not</em> hold any locks when this method called.
*/
void updateSubscriptions() {
if (LOGV) Slog.v(TAG, "updateSubscriptions()");
Trace.traceBegin(TRACE_TAG_NETWORK, "updateSubscriptions");
final TelephonyManager tm = mContext.getSystemService(TelephonyManager.class);
final SubscriptionManager sm = mContext.getSystemService(SubscriptionManager.class);
final List<SubscriptionInfo> subList = CollectionUtils.emptyIfNull(
sm.getActiveSubscriptionInfoList());
final List<String[]> mergedSubscriberIdsList = new ArrayList();
final SparseArray<String> subIdToSubscriberId = new SparseArray<>(subList.size());
final SparseArray<PersistableBundle> subIdToCarrierConfig =
new SparseArray<PersistableBundle>();
for (final SubscriptionInfo sub : subList) {
final int subId = sub.getSubscriptionId();
final TelephonyManager tmSub = tm.createForSubscriptionId(subId);
final String subscriberId = tmSub.getSubscriberId();
if (!TextUtils.isEmpty(subscriberId)) {
subIdToSubscriberId.put(tmSub.getSubscriptionId(), subscriberId);
} else {
Slog.wtf(TAG, "Missing subscriberId for subId " + tmSub.getSubscriptionId());
}
final String[] mergedSubscriberId = ArrayUtils.defeatNullable(
tmSub.getMergedImsisFromGroup());
mergedSubscriberIdsList.add(mergedSubscriberId);
final PersistableBundle config = mCarrierConfigManager.getConfigForSubId(subId);
if (config != null) {
subIdToCarrierConfig.put(subId, config);
} else {
Slog.e(TAG, "Missing CarrierConfig for subId " + subId);
}
}
synchronized (mNetworkPoliciesSecondLock) {
mSubIdToSubscriberId.clear();
for (int i = 0; i < subIdToSubscriberId.size(); i++) {
mSubIdToSubscriberId.put(subIdToSubscriberId.keyAt(i),
subIdToSubscriberId.valueAt(i));
}
mMergedSubscriberIds = mergedSubscriberIdsList;
mSubIdToCarrierConfig.clear();
for (int i = 0; i < subIdToCarrierConfig.size(); i++) {
mSubIdToCarrierConfig.put(subIdToCarrierConfig.keyAt(i),
subIdToCarrierConfig.valueAt(i));
}
}
Trace.traceEnd(TRACE_TAG_NETWORK);
}
/**
* Examine all connected {@link NetworkState}, looking for
* {@link NetworkPolicy} that need to be enforced. When matches found, set
* remaining quota based on usage cycle and historical stats.
*/
@GuardedBy("mNetworkPoliciesSecondLock")
void updateNetworkRulesNL() {
if (LOGV) Slog.v(TAG, "updateNetworkRulesNL()");
Trace.traceBegin(TRACE_TAG_NETWORK, "updateNetworkRulesNL");
final NetworkState[] states;
try {
states = defeatNullable(mConnManager.getAllNetworkState());
} catch (RemoteException e) {
// ignored; service lives in system_server
return;
}
// First, generate identities of all connected networks so we can
// quickly compare them against all defined policies below.
mNetIdToSubId.clear();
final ArrayMap<NetworkState, NetworkIdentity> identified = new ArrayMap<>();
for (NetworkState state : states) {
if (state.network != null) {
mNetIdToSubId.put(state.network.netId, parseSubId(state));
}
if (state.networkInfo != null && state.networkInfo.isConnected()) {
// Policies matched by NPMS only match by subscriber ID or by ssid. Thus subtype
// in the object created here is never used and its value doesn't matter, so use
// NETWORK_TYPE_UNKNOWN.
final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state,
true, TelephonyManager.NETWORK_TYPE_UNKNOWN /* subType */);
identified.put(state, ident);
}
}
final ArraySet<String> newMeteredIfaces = new ArraySet<>();
long lowestRule = Long.MAX_VALUE;
// For every well-defined policy, compute remaining data based on
// current cycle and historical stats, and push to kernel.
final ArraySet<String> matchingIfaces = new ArraySet<>();
for (int i = mNetworkPolicy.size() - 1; i >= 0; i--) {
final NetworkPolicy policy = mNetworkPolicy.valueAt(i);
// Collect all ifaces that match this policy
matchingIfaces.clear();
for (int j = identified.size() - 1; j >= 0; j--) {
if (policy.template.matches(identified.valueAt(j))) {
collectIfaces(matchingIfaces, identified.keyAt(j));
}
}
if (LOGD) {
Slog.d(TAG, "Applying " + policy + " to ifaces " + matchingIfaces);
}
final boolean hasWarning = policy.warningBytes != LIMIT_DISABLED;
final boolean hasLimit = policy.limitBytes != LIMIT_DISABLED;
if (hasLimit || policy.metered) {
final long quotaBytes;
if (hasLimit && policy.hasCycle()) {
final Pair<ZonedDateTime, ZonedDateTime> cycle = NetworkPolicyManager
.cycleIterator(policy).next();
final long start = cycle.first.toInstant().toEpochMilli();
final long end = cycle.second.toInstant().toEpochMilli();
final long totalBytes = getTotalBytes(policy.template, start, end);
if (policy.lastLimitSnooze >= start) {
// snoozing past quota, but we still need to restrict apps,
// so push really high quota.
quotaBytes = Long.MAX_VALUE;
} else {
// remaining "quota" bytes are based on total usage in
// current cycle. kernel doesn't like 0-byte rules, so we
// set 1-byte quota and disable the radio later.
quotaBytes = Math.max(1, policy.limitBytes - totalBytes);
}
} else {
// metered network, but no policy limit; we still need to
// restrict apps, so push really high quota.
quotaBytes = Long.MAX_VALUE;
}
if (matchingIfaces.size() > 1) {
// TODO: switch to shared quota once NMS supports
Slog.w(TAG, "shared quota unsupported; generating rule for each iface");
}
for (int j = matchingIfaces.size() - 1; j >= 0; j--) {
final String iface = matchingIfaces.valueAt(j);
setInterfaceQuotaAsync(iface, quotaBytes);
newMeteredIfaces.add(iface);
}
}
// keep track of lowest warning or limit of active policies
if (hasWarning && policy.warningBytes < lowestRule) {
lowestRule = policy.warningBytes;
}
if (hasLimit && policy.limitBytes < lowestRule) {
lowestRule = policy.limitBytes;
}
}
// One final pass to catch any metered ifaces that don't have explicitly
// defined policies; typically Wi-Fi networks.
for (NetworkState state : states) {
if (state.networkInfo != null && state.networkInfo.isConnected()
&& !state.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED)) {
matchingIfaces.clear();
collectIfaces(matchingIfaces, state);
for (int j = matchingIfaces.size() - 1; j >= 0; j--) {
final String iface = matchingIfaces.valueAt(j);
if (!newMeteredIfaces.contains(iface)) {
setInterfaceQuotaAsync(iface, Long.MAX_VALUE);
newMeteredIfaces.add(iface);
}
}
}
}
// Remove quota from any interfaces that are no longer metered.
synchronized (mMeteredIfacesLock) {
for (int i = mMeteredIfaces.size() - 1; i >= 0; i--) {
final String iface = mMeteredIfaces.valueAt(i);
if (!newMeteredIfaces.contains(iface)) {
removeInterfaceQuotaAsync(iface);
}
}
mMeteredIfaces = newMeteredIfaces;
}
final ContentResolver cr = mContext.getContentResolver();
final boolean quotaEnabled = Settings.Global.getInt(cr,
NETPOLICY_QUOTA_ENABLED, 1) != 0;
final long quotaUnlimited = Settings.Global.getLong(cr,
NETPOLICY_QUOTA_UNLIMITED, QUOTA_UNLIMITED_DEFAULT);
final float quotaLimited = Settings.Global.getFloat(cr,
NETPOLICY_QUOTA_LIMITED, QUOTA_LIMITED_DEFAULT);
// Finally, calculate our opportunistic quotas
mSubscriptionOpportunisticQuota.clear();
for (NetworkState state : states) {
if (!quotaEnabled) continue;
if (state.network == null) continue;
final int subId = getSubIdLocked(state.network);
final SubscriptionPlan plan = getPrimarySubscriptionPlanLocked(subId);
if (plan == null) continue;
final long quotaBytes;
final long limitBytes = plan.getDataLimitBytes();
if (!state.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_ROAMING)) {
// Clamp to 0 when roaming
quotaBytes = 0;
} else if (limitBytes == SubscriptionPlan.BYTES_UNKNOWN) {
quotaBytes = OPPORTUNISTIC_QUOTA_UNKNOWN;
} else if (limitBytes == SubscriptionPlan.BYTES_UNLIMITED) {
// Unlimited data; let's use 20MiB/day (600MiB/month)
quotaBytes = quotaUnlimited;
} else {
// Limited data; let's only use 10% of remaining budget
final Range<ZonedDateTime> cycle = plan.cycleIterator().next();
final long start = cycle.getLower().toInstant().toEpochMilli();
final long end = cycle.getUpper().toInstant().toEpochMilli();
final Instant now = mClock.instant();
final long startOfDay = ZonedDateTime.ofInstant(now, cycle.getLower().getZone())
.truncatedTo(ChronoUnit.DAYS)
.toInstant().toEpochMilli();
final long totalBytes = getTotalBytes(
NetworkTemplate.buildTemplateMobileAll(state.subscriberId),
start, startOfDay);
final long remainingBytes = limitBytes - totalBytes;
// Number of remaining days including current day
final long remainingDays =
1 + ((end - now.toEpochMilli() - 1) / TimeUnit.DAYS.toMillis(1));
quotaBytes = Math.max(0, (long) ((remainingBytes / remainingDays) * quotaLimited));
}
mSubscriptionOpportunisticQuota.put(subId, quotaBytes);
}
final String[] meteredIfaces;
synchronized (mMeteredIfacesLock) {
meteredIfaces = mMeteredIfaces.toArray(new String[mMeteredIfaces.size()]);
}
mHandler.obtainMessage(MSG_METERED_IFACES_CHANGED, meteredIfaces).sendToTarget();
mHandler.obtainMessage(MSG_ADVISE_PERSIST_THRESHOLD, lowestRule).sendToTarget();
Trace.traceEnd(TRACE_TAG_NETWORK);
}
/**
* Once any {@link #mNetworkPolicy} are loaded from disk, ensure that we
* have at least a default mobile policy defined.
*/
@GuardedBy("mNetworkPoliciesSecondLock")
private void ensureActiveMobilePolicyAL() {
if (LOGV) Slog.v(TAG, "ensureActiveMobilePolicyAL()");
if (mSuppressDefaultPolicy) return;
for (int i = 0; i < mSubIdToSubscriberId.size(); i++) {
final int subId = mSubIdToSubscriberId.keyAt(i);
final String subscriberId = mSubIdToSubscriberId.valueAt(i);
ensureActiveMobilePolicyAL(subId, subscriberId);
}
}
/**
* Once any {@link #mNetworkPolicy} are loaded from disk, ensure that we
* have at least a default mobile policy defined.
*
* @param subId to build a default policy for
* @param subscriberId that we check for an existing policy
* @return true if a mobile network policy was added, or false one already existed.
*/
@GuardedBy("mNetworkPoliciesSecondLock")
private boolean ensureActiveMobilePolicyAL(int subId, String subscriberId) {
// Poke around to see if we already have a policy
final NetworkIdentity probeIdent = new NetworkIdentity(TYPE_MOBILE,
TelephonyManager.NETWORK_TYPE_UNKNOWN, subscriberId, null, false, true, true);
for (int i = mNetworkPolicy.size() - 1; i >= 0; i--) {
final NetworkTemplate template = mNetworkPolicy.keyAt(i);
if (template.matches(probeIdent)) {
if (LOGD) {
Slog.d(TAG, "Found template " + template + " which matches subscriber "
+ NetworkIdentity.scrubSubscriberId(subscriberId));
}
return false;
}
}
Slog.i(TAG, "No policy for subscriber " + NetworkIdentity.scrubSubscriberId(subscriberId)
+ "; generating default policy");
final NetworkPolicy policy = buildDefaultMobilePolicy(subId, subscriberId);
addNetworkPolicyAL(policy);
return true;
}
private long getPlatformDefaultWarningBytes() {
final int dataWarningConfig = mContext.getResources().getInteger(
com.android.internal.R.integer.config_networkPolicyDefaultWarning);
if (dataWarningConfig == WARNING_DISABLED) {
return WARNING_DISABLED;
} else {
return dataWarningConfig * MB_IN_BYTES;
}
}
private long getPlatformDefaultLimitBytes() {
return LIMIT_DISABLED;
}
@VisibleForTesting
NetworkPolicy buildDefaultMobilePolicy(int subId, String subscriberId) {
final NetworkTemplate template = buildTemplateMobileAll(subscriberId);
final RecurrenceRule cycleRule = NetworkPolicy
.buildRule(ZonedDateTime.now().getDayOfMonth(), ZoneId.systemDefault());
final NetworkPolicy policy = new NetworkPolicy(template, cycleRule,
getPlatformDefaultWarningBytes(), getPlatformDefaultLimitBytes(),
SNOOZE_NEVER, SNOOZE_NEVER, true, true);
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
updateDefaultMobilePolicyAL(subId, policy);
}
}
return policy;
}
/**
* Update the given {@link NetworkPolicy} based on any carrier-provided
* defaults via {@link SubscriptionPlan} or {@link CarrierConfigManager}.
* Leaves policy untouched if the user has modified it.
*
* @return if the policy was modified
*/
@GuardedBy("mNetworkPoliciesSecondLock")
private boolean updateDefaultMobilePolicyAL(int subId, NetworkPolicy policy) {
if (!policy.inferred) {
if (LOGD) Slog.d(TAG, "Ignoring user-defined policy " + policy);
return false;
}
final NetworkPolicy original = new NetworkPolicy(policy.template, policy.cycleRule,
policy.warningBytes, policy.limitBytes, policy.lastWarningSnooze,
policy.lastLimitSnooze, policy.metered, policy.inferred);
final SubscriptionPlan[] plans = mSubscriptionPlans.get(subId);
if (!ArrayUtils.isEmpty(plans)) {
final SubscriptionPlan plan = plans[0];
policy.cycleRule = plan.getCycleRule();
final long planLimitBytes = plan.getDataLimitBytes();
if (planLimitBytes == SubscriptionPlan.BYTES_UNKNOWN) {
policy.warningBytes = getPlatformDefaultWarningBytes();
policy.limitBytes = getPlatformDefaultLimitBytes();
} else if (planLimitBytes == SubscriptionPlan.BYTES_UNLIMITED) {
policy.warningBytes = NetworkPolicy.WARNING_DISABLED;
policy.limitBytes = NetworkPolicy.LIMIT_DISABLED;
} else {
policy.warningBytes = (planLimitBytes * 9) / 10;
switch (plan.getDataLimitBehavior()) {
case SubscriptionPlan.LIMIT_BEHAVIOR_BILLED:
case SubscriptionPlan.LIMIT_BEHAVIOR_DISABLED:
policy.limitBytes = planLimitBytes;
break;
default:
policy.limitBytes = NetworkPolicy.LIMIT_DISABLED;
break;
}
}
} else {
final PersistableBundle config = mSubIdToCarrierConfig.get(subId);
final int currentCycleDay;
if (policy.cycleRule.isMonthly()) {
currentCycleDay = policy.cycleRule.start.getDayOfMonth();
} else {
currentCycleDay = NetworkPolicy.CYCLE_NONE;
}
final int cycleDay = getCycleDayFromCarrierConfig(config, currentCycleDay);
policy.cycleRule = NetworkPolicy.buildRule(cycleDay, ZoneId.systemDefault());
policy.warningBytes = getWarningBytesFromCarrierConfig(config, policy.warningBytes);
policy.limitBytes = getLimitBytesFromCarrierConfig(config, policy.limitBytes);
}
if (policy.equals(original)) {
return false;
} else {
Slog.d(TAG, "Updated " + original + " to " + policy);
return true;
}
}
@GuardedBy({"mUidRulesFirstLock", "mNetworkPoliciesSecondLock"})
private void readPolicyAL() {
if (LOGV) Slog.v(TAG, "readPolicyAL()");
// clear any existing policy and read from disk
mNetworkPolicy.clear();
mSubscriptionPlans.clear();
mSubscriptionPlansOwner.clear();
mUidPolicy.clear();
FileInputStream fis = null;
try {
fis = mPolicyFile.openRead();
final XmlPullParser in = Xml.newPullParser();
in.setInput(fis, StandardCharsets.UTF_8.name());
// Must save the <restrict-background> tags and convert them to <uid-policy> later,
// to skip UIDs that were explicitly denied.
final SparseBooleanArray restrictBackgroundAllowedUids = new SparseBooleanArray();
int type;
int version = VERSION_INIT;
boolean insideAllowlist = false;
while ((type = in.next()) != END_DOCUMENT) {
final String tag = in.getName();
if (type == START_TAG) {
if (TAG_POLICY_LIST.equals(tag)) {
final boolean oldValue = mRestrictBackground;
version = readIntAttribute(in, ATTR_VERSION);
mLoadedRestrictBackground = (version >= VERSION_ADDED_RESTRICT_BACKGROUND)
&& readBooleanAttribute(in, ATTR_RESTRICT_BACKGROUND);
} else if (TAG_NETWORK_POLICY.equals(tag)) {
final int networkTemplate = readIntAttribute(in, ATTR_NETWORK_TEMPLATE);
final String subscriberId = in.getAttributeValue(null, ATTR_SUBSCRIBER_ID);
final String networkId;
if (version >= VERSION_ADDED_NETWORK_ID) {
networkId = in.getAttributeValue(null, ATTR_NETWORK_ID);
} else {
networkId = null;
}
final RecurrenceRule cycleRule;
if (version >= VERSION_ADDED_CYCLE) {
final String start = readStringAttribute(in, ATTR_CYCLE_START);
final String end = readStringAttribute(in, ATTR_CYCLE_END);
final String period = readStringAttribute(in, ATTR_CYCLE_PERIOD);
cycleRule = new RecurrenceRule(
RecurrenceRule.convertZonedDateTime(start),
RecurrenceRule.convertZonedDateTime(end),
RecurrenceRule.convertPeriod(period));
} else {
final int cycleDay = readIntAttribute(in, ATTR_CYCLE_DAY);
final String cycleTimezone;
if (version >= VERSION_ADDED_TIMEZONE) {
cycleTimezone = in.getAttributeValue(null, ATTR_CYCLE_TIMEZONE);
} else {
cycleTimezone = "UTC";
}
cycleRule = NetworkPolicy.buildRule(cycleDay, ZoneId.of(cycleTimezone));
}
final long warningBytes = readLongAttribute(in, ATTR_WARNING_BYTES);
final long limitBytes = readLongAttribute(in, ATTR_LIMIT_BYTES);
final long lastLimitSnooze;
if (version >= VERSION_SPLIT_SNOOZE) {
lastLimitSnooze = readLongAttribute(in, ATTR_LAST_LIMIT_SNOOZE);
} else if (version >= VERSION_ADDED_SNOOZE) {
lastLimitSnooze = readLongAttribute(in, ATTR_LAST_SNOOZE);
} else {
lastLimitSnooze = SNOOZE_NEVER;
}
final boolean metered;
if (version >= VERSION_ADDED_METERED) {
metered = readBooleanAttribute(in, ATTR_METERED);
} else {
switch (networkTemplate) {
case MATCH_MOBILE:
metered = true;
break;
default:
metered = false;
}
}
final long lastWarningSnooze;
if (version >= VERSION_SPLIT_SNOOZE) {
lastWarningSnooze = readLongAttribute(in, ATTR_LAST_WARNING_SNOOZE);
} else {
lastWarningSnooze = SNOOZE_NEVER;
}
final boolean inferred;
if (version >= VERSION_ADDED_INFERRED) {
inferred = readBooleanAttribute(in, ATTR_INFERRED);
} else {
inferred = false;
}
final NetworkTemplate template = new NetworkTemplate(networkTemplate,
subscriberId, networkId);
if (template.isPersistable()) {
mNetworkPolicy.put(template, new NetworkPolicy(template, cycleRule,
warningBytes, limitBytes, lastWarningSnooze,
lastLimitSnooze, metered, inferred));
}
} else if (TAG_SUBSCRIPTION_PLAN.equals(tag)) {
final String start = readStringAttribute(in, ATTR_CYCLE_START);
final String end = readStringAttribute(in, ATTR_CYCLE_END);
final String period = readStringAttribute(in, ATTR_CYCLE_PERIOD);
final SubscriptionPlan.Builder builder = new SubscriptionPlan.Builder(
RecurrenceRule.convertZonedDateTime(start),
RecurrenceRule.convertZonedDateTime(end),
RecurrenceRule.convertPeriod(period));
builder.setTitle(readStringAttribute(in, ATTR_TITLE));
builder.setSummary(readStringAttribute(in, ATTR_SUMMARY));
final long limitBytes = readLongAttribute(in, ATTR_LIMIT_BYTES,
SubscriptionPlan.BYTES_UNKNOWN);
final int limitBehavior = readIntAttribute(in, ATTR_LIMIT_BEHAVIOR,
SubscriptionPlan.LIMIT_BEHAVIOR_UNKNOWN);
if (limitBytes != SubscriptionPlan.BYTES_UNKNOWN
&& limitBehavior != SubscriptionPlan.LIMIT_BEHAVIOR_UNKNOWN) {
builder.setDataLimit(limitBytes, limitBehavior);
}
final long usageBytes = readLongAttribute(in, ATTR_USAGE_BYTES,
SubscriptionPlan.BYTES_UNKNOWN);
final long usageTime = readLongAttribute(in, ATTR_USAGE_TIME,
SubscriptionPlan.TIME_UNKNOWN);
if (usageBytes != SubscriptionPlan.BYTES_UNKNOWN
&& usageTime != SubscriptionPlan.TIME_UNKNOWN) {
builder.setDataUsage(usageBytes, usageTime);
}
final int subId = readIntAttribute(in, ATTR_SUB_ID);
final String ownerPackage = readStringAttribute(in, ATTR_OWNER_PACKAGE);
if (version >= VERSION_ADDED_NETWORK_TYPES) {
final int depth = in.getDepth();
while (XmlUtils.nextElementWithin(in, depth)) {
if (TAG_XML_UTILS_INT_ARRAY.equals(in.getName())
&& ATTR_NETWORK_TYPES.equals(
readStringAttribute(in, ATTR_XML_UTILS_NAME))) {
final int[] networkTypes =
readThisIntArrayXml(in, TAG_XML_UTILS_INT_ARRAY, null);
builder.setNetworkTypes(networkTypes);
}
}
}
final SubscriptionPlan plan = builder.build();
mSubscriptionPlans.put(subId, ArrayUtils.appendElement(
SubscriptionPlan.class, mSubscriptionPlans.get(subId), plan));
mSubscriptionPlansOwner.put(subId, ownerPackage);
} else if (TAG_UID_POLICY.equals(tag)) {
final int uid = readIntAttribute(in, ATTR_UID);
final int policy = readIntAttribute(in, ATTR_POLICY);
if (UserHandle.isApp(uid)) {
setUidPolicyUncheckedUL(uid, policy, false);
} else {
Slog.w(TAG, "unable to apply policy to UID " + uid + "; ignoring");
}
} else if (TAG_APP_POLICY.equals(tag)) {
final int appId = readIntAttribute(in, ATTR_APP_ID);
final int policy = readIntAttribute(in, ATTR_POLICY);
// TODO: set for other users during upgrade
// app policy is deprecated so this is only used in pre system user split.
final int uid = UserHandle.getUid(UserHandle.USER_SYSTEM, appId);
if (UserHandle.isApp(uid)) {
setUidPolicyUncheckedUL(uid, policy, false);
} else {
Slog.w(TAG, "unable to apply policy to UID " + uid + "; ignoring");
}
} else if (TAG_WHITELIST.equals(tag)) {
insideAllowlist = true;
} else if (TAG_RESTRICT_BACKGROUND.equals(tag) && insideAllowlist) {
final int uid = readIntAttribute(in, ATTR_UID);
restrictBackgroundAllowedUids.append(uid, true);
} else if (TAG_REVOKED_RESTRICT_BACKGROUND.equals(tag) && insideAllowlist) {
final int uid = readIntAttribute(in, ATTR_UID);
mRestrictBackgroundAllowlistRevokedUids.put(uid, true);
}
} else if (type == END_TAG) {
if (TAG_WHITELIST.equals(tag)) {
insideAllowlist = false;
}
}
}
final int size = restrictBackgroundAllowedUids.size();
for (int i = 0; i < size; i++) {
final int uid = restrictBackgroundAllowedUids.keyAt(i);
final int policy = mUidPolicy.get(uid, POLICY_NONE);
if ((policy & POLICY_REJECT_METERED_BACKGROUND) != 0) {
Slog.w(TAG, "ignoring restrict-background-allowlist for " + uid
+ " because its policy is " + uidPoliciesToString(policy));
continue;
}
if (UserHandle.isApp(uid)) {
final int newPolicy = policy | POLICY_ALLOW_METERED_BACKGROUND;
if (LOGV)
Log.v(TAG, "new policy for " + uid + ": " + uidPoliciesToString(newPolicy));
setUidPolicyUncheckedUL(uid, newPolicy, false);
} else {
Slog.w(TAG, "unable to update policy on UID " + uid);
}
}
} catch (FileNotFoundException e) {
// missing policy is okay, probably first boot
upgradeDefaultBackgroundDataUL();
} catch (Exception e) {
Log.wtf(TAG, "problem reading network policy", e);
} finally {
IoUtils.closeQuietly(fis);
}
}
/**
* Upgrade legacy background data flags, notifying listeners of one last
* change to always-true.
*/
private void upgradeDefaultBackgroundDataUL() {
// This method is only called when we're unable to find the network policy flag, which
// usually happens on first boot of a new device and not one that has received an OTA.
// Seed from the default value configured for this device.
mLoadedRestrictBackground = Settings.Global.getInt(
mContext.getContentResolver(), Global.DEFAULT_RESTRICT_BACKGROUND_DATA, 0) == 1;
// NOTE: We used to read the legacy setting here :
//
// final int legacyFlagValue = Settings.Secure.getInt(
// mContext.getContentResolver(), Settings.Secure.BACKGROUND_DATA, ..);
//
// This is no longer necessary because we will never upgrade directly from Gingerbread
// to O+. Devices upgrading from ICS onwards to O will have a netpolicy.xml file that
// contains the correct value that we will continue to use.
}
/**
* Perform upgrade step of moving any user-defined meterness overrides over
* into {@link WifiConfiguration}.
*/
@GuardedBy({"mNetworkPoliciesSecondLock", "mUidRulesFirstLock"})
private void upgradeWifiMeteredOverrideAL() {
boolean modified = false;
final WifiManager wm = mContext.getSystemService(WifiManager.class);
final List<WifiConfiguration> configs = wm.getConfiguredNetworks();
for (int i = 0; i < mNetworkPolicy.size(); ) {
final NetworkPolicy policy = mNetworkPolicy.valueAt(i);
if (policy.template.getMatchRule() == NetworkTemplate.MATCH_WIFI
&& !policy.inferred) {
mNetworkPolicy.removeAt(i);
modified = true;
final String networkId = resolveNetworkId(policy.template.getNetworkId());
for (WifiConfiguration config : configs) {
if (Objects.equals(resolveNetworkId(config), networkId)) {
Slog.d(TAG, "Found network " + networkId + "; upgrading metered hint");
config.meteredOverride = policy.metered
? WifiConfiguration.METERED_OVERRIDE_METERED
: WifiConfiguration.METERED_OVERRIDE_NOT_METERED;
wm.updateNetwork(config);
}
}
} else {
i++;
}
}
if (modified) {
writePolicyAL();
}
}
@GuardedBy({"mUidRulesFirstLock", "mNetworkPoliciesSecondLock"})
void writePolicyAL() {
if (LOGV) Slog.v(TAG, "writePolicyAL()");
FileOutputStream fos = null;
try {
fos = mPolicyFile.startWrite();
XmlSerializer out = new FastXmlSerializer();
out.setOutput(fos, StandardCharsets.UTF_8.name());
out.startDocument(null, true);
out.startTag(null, TAG_POLICY_LIST);
writeIntAttribute(out, ATTR_VERSION, VERSION_LATEST);
writeBooleanAttribute(out, ATTR_RESTRICT_BACKGROUND, mRestrictBackground);
// write all known network policies
for (int i = 0; i < mNetworkPolicy.size(); i++) {
final NetworkPolicy policy = mNetworkPolicy.valueAt(i);
final NetworkTemplate template = policy.template;
if (!template.isPersistable()) continue;
out.startTag(null, TAG_NETWORK_POLICY);
writeIntAttribute(out, ATTR_NETWORK_TEMPLATE, template.getMatchRule());
final String subscriberId = template.getSubscriberId();
if (subscriberId != null) {
out.attribute(null, ATTR_SUBSCRIBER_ID, subscriberId);
}
final String networkId = template.getNetworkId();
if (networkId != null) {
out.attribute(null, ATTR_NETWORK_ID, networkId);
}
writeStringAttribute(out, ATTR_CYCLE_START,
RecurrenceRule.convertZonedDateTime(policy.cycleRule.start));
writeStringAttribute(out, ATTR_CYCLE_END,
RecurrenceRule.convertZonedDateTime(policy.cycleRule.end));
writeStringAttribute(out, ATTR_CYCLE_PERIOD,
RecurrenceRule.convertPeriod(policy.cycleRule.period));
writeLongAttribute(out, ATTR_WARNING_BYTES, policy.warningBytes);
writeLongAttribute(out, ATTR_LIMIT_BYTES, policy.limitBytes);
writeLongAttribute(out, ATTR_LAST_WARNING_SNOOZE, policy.lastWarningSnooze);
writeLongAttribute(out, ATTR_LAST_LIMIT_SNOOZE, policy.lastLimitSnooze);
writeBooleanAttribute(out, ATTR_METERED, policy.metered);
writeBooleanAttribute(out, ATTR_INFERRED, policy.inferred);
out.endTag(null, TAG_NETWORK_POLICY);
}
// write all known subscription plans
for (int i = 0; i < mSubscriptionPlans.size(); i++) {
final int subId = mSubscriptionPlans.keyAt(i);
final String ownerPackage = mSubscriptionPlansOwner.get(subId);
final SubscriptionPlan[] plans = mSubscriptionPlans.valueAt(i);
if (ArrayUtils.isEmpty(plans)) continue;
for (SubscriptionPlan plan : plans) {
out.startTag(null, TAG_SUBSCRIPTION_PLAN);
writeIntAttribute(out, ATTR_SUB_ID, subId);
writeStringAttribute(out, ATTR_OWNER_PACKAGE, ownerPackage);
final RecurrenceRule cycleRule = plan.getCycleRule();
writeStringAttribute(out, ATTR_CYCLE_START,
RecurrenceRule.convertZonedDateTime(cycleRule.start));
writeStringAttribute(out, ATTR_CYCLE_END,
RecurrenceRule.convertZonedDateTime(cycleRule.end));
writeStringAttribute(out, ATTR_CYCLE_PERIOD,
RecurrenceRule.convertPeriod(cycleRule.period));
writeStringAttribute(out, ATTR_TITLE, plan.getTitle());
writeStringAttribute(out, ATTR_SUMMARY, plan.getSummary());
writeLongAttribute(out, ATTR_LIMIT_BYTES, plan.getDataLimitBytes());
writeIntAttribute(out, ATTR_LIMIT_BEHAVIOR, plan.getDataLimitBehavior());
writeLongAttribute(out, ATTR_USAGE_BYTES, plan.getDataUsageBytes());
writeLongAttribute(out, ATTR_USAGE_TIME, plan.getDataUsageTime());
try {
writeIntArrayXml(plan.getNetworkTypes(), ATTR_NETWORK_TYPES, out);
} catch (XmlPullParserException ignored) { }
out.endTag(null, TAG_SUBSCRIPTION_PLAN);
}
}
// write all known uid policies
for (int i = 0; i < mUidPolicy.size(); i++) {
final int uid = mUidPolicy.keyAt(i);
final int policy = mUidPolicy.valueAt(i);
// skip writing empty policies
if (policy == POLICY_NONE) continue;
out.startTag(null, TAG_UID_POLICY);
writeIntAttribute(out, ATTR_UID, uid);
writeIntAttribute(out, ATTR_POLICY, policy);
out.endTag(null, TAG_UID_POLICY);
}
out.endTag(null, TAG_POLICY_LIST);
// write all allowlists
out.startTag(null, TAG_WHITELIST);
// revoked restrict background allowlist
int size = mRestrictBackgroundAllowlistRevokedUids.size();
for (int i = 0; i < size; i++) {
final int uid = mRestrictBackgroundAllowlistRevokedUids.keyAt(i);
out.startTag(null, TAG_REVOKED_RESTRICT_BACKGROUND);
writeIntAttribute(out, ATTR_UID, uid);
out.endTag(null, TAG_REVOKED_RESTRICT_BACKGROUND);
}
out.endTag(null, TAG_WHITELIST);
out.endDocument();
mPolicyFile.finishWrite(fos);
} catch (IOException e) {
if (fos != null) {
mPolicyFile.failWrite(fos);
}
}
}
@Override
public void setUidPolicy(int uid, int policy) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
if (!UserHandle.isApp(uid)) {
throw new IllegalArgumentException("cannot apply policy to UID " + uid);
}
synchronized (mUidRulesFirstLock) {
final long token = Binder.clearCallingIdentity();
try {
final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE);
if (oldPolicy != policy) {
setUidPolicyUncheckedUL(uid, oldPolicy, policy, true);
mLogger.uidPolicyChanged(uid, oldPolicy, policy);
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
}
@Override
public void addUidPolicy(int uid, int policy) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
if (!UserHandle.isApp(uid)) {
throw new IllegalArgumentException("cannot apply policy to UID " + uid);
}
synchronized (mUidRulesFirstLock) {
final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE);
policy |= oldPolicy;
if (oldPolicy != policy) {
setUidPolicyUncheckedUL(uid, oldPolicy, policy, true);
mLogger.uidPolicyChanged(uid, oldPolicy, policy);
}
}
}
@Override
public void removeUidPolicy(int uid, int policy) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
if (!UserHandle.isApp(uid)) {
throw new IllegalArgumentException("cannot apply policy to UID " + uid);
}
synchronized (mUidRulesFirstLock) {
final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE);
policy = oldPolicy & ~policy;
if (oldPolicy != policy) {
setUidPolicyUncheckedUL(uid, oldPolicy, policy, true);
mLogger.uidPolicyChanged(uid, oldPolicy, policy);
}
}
}
@GuardedBy("mUidRulesFirstLock")
private void setUidPolicyUncheckedUL(int uid, int oldPolicy, int policy, boolean persist) {
setUidPolicyUncheckedUL(uid, policy, false);
final boolean notifyApp;
if (!isUidValidForAllowlistRulesUL(uid)) {
notifyApp = false;
} else {
final boolean wasDenied = oldPolicy == POLICY_REJECT_METERED_BACKGROUND;
final boolean isDenied = policy == POLICY_REJECT_METERED_BACKGROUND;
final boolean wasAllowed = oldPolicy == POLICY_ALLOW_METERED_BACKGROUND;
final boolean isAllowed = policy == POLICY_ALLOW_METERED_BACKGROUND;
final boolean wasBlocked = wasDenied || (mRestrictBackground && !wasAllowed);
final boolean isBlocked = isDenied || (mRestrictBackground && !isAllowed);
if ((wasAllowed && (!isAllowed || isDenied))
&& mDefaultRestrictBackgroundAllowlistUids.get(uid)
&& !mRestrictBackgroundAllowlistRevokedUids.get(uid)) {
if (LOGD)
Slog.d(TAG, "Adding uid " + uid + " to revoked restrict background allowlist");
mRestrictBackgroundAllowlistRevokedUids.append(uid, true);
}
notifyApp = wasBlocked != isBlocked;
}
mHandler.obtainMessage(MSG_POLICIES_CHANGED, uid, policy, Boolean.valueOf(notifyApp))
.sendToTarget();
if (persist) {
synchronized (mNetworkPoliciesSecondLock) {
writePolicyAL();
}
}
}
@GuardedBy("mUidRulesFirstLock")
private void setUidPolicyUncheckedUL(int uid, int policy, boolean persist) {
if (policy == POLICY_NONE) {
mUidPolicy.delete(uid);
} else {
mUidPolicy.put(uid, policy);
}
// uid policy changed, recompute rules and persist policy.
updateRulesForDataUsageRestrictionsUL(uid);
if (persist) {
synchronized (mNetworkPoliciesSecondLock) {
writePolicyAL();
}
}
}
@Override
public int getUidPolicy(int uid) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
synchronized (mUidRulesFirstLock) {
return mUidPolicy.get(uid, POLICY_NONE);
}
}
@Override
public int[] getUidsWithPolicy(int policy) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
int[] uids = new int[0];
synchronized (mUidRulesFirstLock) {
for (int i = 0; i < mUidPolicy.size(); i++) {
final int uid = mUidPolicy.keyAt(i);
final int uidPolicy = mUidPolicy.valueAt(i);
if ((policy == POLICY_NONE && uidPolicy == POLICY_NONE) ||
(uidPolicy & policy) != 0) {
uids = appendInt(uids, uid);
}
}
}
return uids;
}
/**
* Removes any persistable state associated with given {@link UserHandle}, persisting
* if any changes that are made.
*/
@GuardedBy("mUidRulesFirstLock")
boolean removeUserStateUL(int userId, boolean writePolicy, boolean updateGlobalRules) {
mLogger.removingUserState(userId);
boolean changed = false;
// Remove entries from revoked default restricted background UID allowlist
for (int i = mRestrictBackgroundAllowlistRevokedUids.size() - 1; i >= 0; i--) {
final int uid = mRestrictBackgroundAllowlistRevokedUids.keyAt(i);
if (UserHandle.getUserId(uid) == userId) {
mRestrictBackgroundAllowlistRevokedUids.removeAt(i);
changed = true;
}
}
// Remove associated UID policies
int[] uids = new int[0];
for (int i = 0; i < mUidPolicy.size(); i++) {
final int uid = mUidPolicy.keyAt(i);
if (UserHandle.getUserId(uid) == userId) {
uids = appendInt(uids, uid);
}
}
if (uids.length > 0) {
for (int uid : uids) {
mUidPolicy.delete(uid);
}
changed = true;
}
synchronized (mNetworkPoliciesSecondLock) {
if (updateGlobalRules) {
updateRulesForGlobalChangeAL(true);
}
if (writePolicy && changed) {
writePolicyAL();
}
}
return changed;
}
private boolean checkAnyPermissionOf(String... permissions) {
for (String permission : permissions) {
if (mContext.checkCallingOrSelfPermission(permission) == PERMISSION_GRANTED) {
return true;
}
}
return false;
}
private void enforceAnyPermissionOf(String... permissions) {
if (!checkAnyPermissionOf(permissions)) {
throw new SecurityException("Requires one of the following permissions: "
+ String.join(", ", permissions) + ".");
}
}
@Override
public void registerListener(INetworkPolicyListener listener) {
// TODO: Remove CONNECTIVITY_INTERNAL and the *AnyPermissionOf methods above after all apps
// have declared OBSERVE_NETWORK_POLICY.
enforceAnyPermissionOf(CONNECTIVITY_INTERNAL, OBSERVE_NETWORK_POLICY);
mListeners.register(listener);
}
@Override
public void unregisterListener(INetworkPolicyListener listener) {
// TODO: Remove CONNECTIVITY_INTERNAL and the *AnyPermissionOf methods above after all apps
// have declared OBSERVE_NETWORK_POLICY.
enforceAnyPermissionOf(CONNECTIVITY_INTERNAL, OBSERVE_NETWORK_POLICY);
mListeners.unregister(listener);
}
@Override
public void setNetworkPolicies(NetworkPolicy[] policies) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
final long token = Binder.clearCallingIdentity();
try {
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
normalizePoliciesNL(policies);
handleNetworkPoliciesUpdateAL(false);
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
void addNetworkPolicyAL(NetworkPolicy policy) {
NetworkPolicy[] policies = getNetworkPolicies(mContext.getOpPackageName());
policies = ArrayUtils.appendElement(NetworkPolicy.class, policies, policy);
setNetworkPolicies(policies);
}
@Override
public NetworkPolicy[] getNetworkPolicies(String callingPackage) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
try {
mContext.enforceCallingOrSelfPermission(READ_PRIVILEGED_PHONE_STATE, TAG);
// SKIP checking run-time OP_READ_PHONE_STATE since caller or self has PRIVILEGED
// permission
} catch (SecurityException e) {
mContext.enforceCallingOrSelfPermission(READ_PHONE_STATE, TAG);
if (mAppOps.noteOp(AppOpsManager.OP_READ_PHONE_STATE, Binder.getCallingUid(),
callingPackage) != AppOpsManager.MODE_ALLOWED) {
return new NetworkPolicy[0];
}
}
synchronized (mNetworkPoliciesSecondLock) {
final int size = mNetworkPolicy.size();
final NetworkPolicy[] policies = new NetworkPolicy[size];
for (int i = 0; i < size; i++) {
policies[i] = mNetworkPolicy.valueAt(i);
}
return policies;
}
}
@GuardedBy("mNetworkPoliciesSecondLock")
private void normalizePoliciesNL() {
normalizePoliciesNL(getNetworkPolicies(mContext.getOpPackageName()));
}
@GuardedBy("mNetworkPoliciesSecondLock")
private void normalizePoliciesNL(NetworkPolicy[] policies) {
mNetworkPolicy.clear();
for (NetworkPolicy policy : policies) {
if (policy == null) {
continue;
}
// When two normalized templates conflict, prefer the most
// restrictive policy
policy.template = NetworkTemplate.normalize(policy.template, mMergedSubscriberIds);
final NetworkPolicy existing = mNetworkPolicy.get(policy.template);
if (existing == null || existing.compareTo(policy) > 0) {
if (existing != null) {
Slog.d(TAG, "Normalization replaced " + existing + " with " + policy);
}
mNetworkPolicy.put(policy.template, policy);
}
}
}
@Override
public void snoozeLimit(NetworkTemplate template) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
final long token = Binder.clearCallingIdentity();
try {
performSnooze(template, TYPE_LIMIT);
} finally {
Binder.restoreCallingIdentity(token);
}
}
void performSnooze(NetworkTemplate template, int type) {
final long currentTime = mClock.millis();
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
// find and snooze local policy that matches
final NetworkPolicy policy = mNetworkPolicy.get(template);
if (policy == null) {
throw new IllegalArgumentException("unable to find policy for " + template);
}
switch (type) {
case TYPE_WARNING:
policy.lastWarningSnooze = currentTime;
break;
case TYPE_LIMIT:
policy.lastLimitSnooze = currentTime;
break;
case TYPE_RAPID:
policy.lastRapidSnooze = currentTime;
break;
default:
throw new IllegalArgumentException("unexpected type");
}
handleNetworkPoliciesUpdateAL(true);
}
}
}
@Override
public void setRestrictBackground(boolean restrictBackground) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "setRestrictBackground");
try {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
final int callingUid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
synchronized (mUidRulesFirstLock) {
setRestrictBackgroundUL(restrictBackground, "uid:" + callingUid);
}
} finally {
Binder.restoreCallingIdentity(token);
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
@GuardedBy("mUidRulesFirstLock")
private void setRestrictBackgroundUL(boolean restrictBackground, String reason) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "setRestrictBackgroundUL");
try {
if (restrictBackground == mRestrictBackground) {
// Ideally, UI should never allow this scenario...
Slog.w(TAG, "setRestrictBackgroundUL: already " + restrictBackground);
return;
}
Slog.d(TAG, "setRestrictBackgroundUL(): " + restrictBackground + "; reason: " + reason);
final boolean oldRestrictBackground = mRestrictBackground;
mRestrictBackground = restrictBackground;
// Must allow foreground apps before turning data saver mode on.
// TODO: there is no need to iterate through all apps here, just those in the foreground,
// so it could call AM to get the UIDs of such apps, and iterate through them instead.
updateRulesForRestrictBackgroundUL();
try {
if (!mNetworkManager.setDataSaverModeEnabled(mRestrictBackground)) {
Slog.e(TAG,
"Could not change Data Saver Mode on NMS to " + mRestrictBackground);
mRestrictBackground = oldRestrictBackground;
// TODO: if it knew the foreground apps (see TODO above), it could call
// updateRulesForRestrictBackgroundUL() again to restore state.
return;
}
} catch (RemoteException e) {
// ignored; service lives in system_server
}
sendRestrictBackgroundChangedMsg();
mLogger.restrictBackgroundChanged(oldRestrictBackground, mRestrictBackground);
if (mRestrictBackgroundLowPowerMode) {
mRestrictBackgroundChangedInBsm = true;
}
synchronized (mNetworkPoliciesSecondLock) {
updateNotificationsNL();
writePolicyAL();
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void sendRestrictBackgroundChangedMsg() {
mHandler.removeMessages(MSG_RESTRICT_BACKGROUND_CHANGED);
mHandler.obtainMessage(MSG_RESTRICT_BACKGROUND_CHANGED, mRestrictBackground ? 1 : 0, 0)
.sendToTarget();
}
@Override
public int getRestrictBackgroundByCaller() {
mContext.enforceCallingOrSelfPermission(ACCESS_NETWORK_STATE, TAG);
final int uid = Binder.getCallingUid();
synchronized (mUidRulesFirstLock) {
// Must clear identity because getUidPolicy() is restricted to system.
final long token = Binder.clearCallingIdentity();
final int policy;
try {
policy = getUidPolicy(uid);
} finally {
Binder.restoreCallingIdentity(token);
}
if (policy == POLICY_REJECT_METERED_BACKGROUND) {
// App is restricted.
return RESTRICT_BACKGROUND_STATUS_ENABLED;
}
if (!mRestrictBackground) {
return RESTRICT_BACKGROUND_STATUS_DISABLED;
}
return (mUidPolicy.get(uid) & POLICY_ALLOW_METERED_BACKGROUND) != 0
? RESTRICT_BACKGROUND_STATUS_WHITELISTED
: RESTRICT_BACKGROUND_STATUS_ENABLED;
}
}
@Override
public boolean getRestrictBackground() {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
synchronized (mUidRulesFirstLock) {
return mRestrictBackground;
}
}
@Override
public void setDeviceIdleMode(boolean enabled) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "setDeviceIdleMode");
try {
synchronized (mUidRulesFirstLock) {
if (mDeviceIdleMode == enabled) {
return;
}
mDeviceIdleMode = enabled;
mLogger.deviceIdleModeEnabled(enabled);
if (mSystemReady) {
// Device idle change means we need to rebuild rules for all
// known apps, so do a global refresh.
updateRulesForRestrictPowerUL();
}
}
if (enabled) {
EventLogTags.writeDeviceIdleOnPhase("net");
} else {
EventLogTags.writeDeviceIdleOffPhase("net");
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
@Override
public void setWifiMeteredOverride(String networkId, int meteredOverride) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
final long token = Binder.clearCallingIdentity();
try {
final WifiManager wm = mContext.getSystemService(WifiManager.class);
final List<WifiConfiguration> configs = wm.getConfiguredNetworks();
for (WifiConfiguration config : configs) {
if (Objects.equals(resolveNetworkId(config), networkId)) {
config.meteredOverride = meteredOverride;
wm.updateNetwork(config);
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
@Deprecated
public NetworkQuotaInfo getNetworkQuotaInfo(NetworkState state) {
Log.w(TAG, "Shame on UID " + Binder.getCallingUid()
+ " for calling the hidden API getNetworkQuotaInfo(). Shame!");
return new NetworkQuotaInfo();
}
private void enforceSubscriptionPlanAccess(int subId, int callingUid, String callingPackage) {
// Verify they're not lying about package name
mAppOps.checkPackage(callingUid, callingPackage);
final SubscriptionManager sm;
final SubscriptionInfo si;
final PersistableBundle config;
final long token = Binder.clearCallingIdentity();
try {
sm = mContext.getSystemService(SubscriptionManager.class);
si = sm.getActiveSubscriptionInfo(subId);
config = mCarrierConfigManager.getConfigForSubId(subId);
} finally {
Binder.restoreCallingIdentity(token);
}
// First check: is caller the CarrierService?
if (si != null) {
if (si.isEmbedded() && sm.canManageSubscription(si, callingPackage)) {
return;
}
}
// Second check: has the CarrierService delegated access?
if (config != null) {
final String overridePackage = config
.getString(CarrierConfigManager.KEY_CONFIG_PLANS_PACKAGE_OVERRIDE_STRING, null);
if (!TextUtils.isEmpty(overridePackage)
&& Objects.equals(overridePackage, callingPackage)) {
return;
}
}
// Third check: is caller the fallback/default CarrierService?
final String defaultPackage = mCarrierConfigManager.getDefaultCarrierServicePackageName();
if (!TextUtils.isEmpty(defaultPackage)
&& Objects.equals(defaultPackage, callingPackage)) {
return;
}
// Fourth check: is caller a testing app?
final String testPackage = SystemProperties.get(PROP_SUB_PLAN_OWNER + "." + subId, null);
if (!TextUtils.isEmpty(testPackage)
&& Objects.equals(testPackage, callingPackage)) {
return;
}
// Fifth check: is caller a legacy testing app?
final String legacyTestPackage = SystemProperties.get("fw.sub_plan_owner." + subId, null);
if (!TextUtils.isEmpty(legacyTestPackage)
&& Objects.equals(legacyTestPackage, callingPackage)) {
return;
}
// Final check: does the caller hold a permission?
mContext.enforceCallingOrSelfPermission(MANAGE_SUBSCRIPTION_PLANS, TAG);
}
private void enforceSubscriptionPlanValidity(SubscriptionPlan[] plans) {
// nothing to check if no plans
if (plans.length == 0) {
Log.d(TAG, "Received empty plans list. Clearing existing SubscriptionPlans.");
return;
}
final int[] allNetworkTypes = TelephonyManager.getAllNetworkTypes();
final ArraySet<Integer> allNetworksSet = new ArraySet<>();
addAll(allNetworksSet, allNetworkTypes);
final ArraySet<Integer> applicableNetworkTypes = new ArraySet<>();
boolean hasGeneralPlan = false;
for (int i = 0; i < plans.length; i++) {
final int[] planNetworkTypes = plans[i].getNetworkTypes();
final ArraySet<Integer> planNetworksSet = new ArraySet<>();
for (int j = 0; j < planNetworkTypes.length; j++) {
// ensure all network types are valid
if (allNetworksSet.contains(planNetworkTypes[j])) {
// ensure no duplicate network types in the same SubscriptionPlan
if (!planNetworksSet.add(planNetworkTypes[j])) {
throw new IllegalArgumentException(
"Subscription plan contains duplicate network types.");
}
} else {
throw new IllegalArgumentException("Invalid network type: "
+ planNetworkTypes[j]);
}
}
if (planNetworkTypes.length == allNetworkTypes.length) {
hasGeneralPlan = true;
} else {
// ensure no network type applies to multiple plans
if (!addAll(applicableNetworkTypes, planNetworkTypes)) {
throw new IllegalArgumentException(
"Multiple subscription plans defined for a single network type.");
}
}
}
// ensure at least one plan applies for every network type
if (!hasGeneralPlan) {
throw new IllegalArgumentException(
"No generic subscription plan that applies to all network types.");
}
}
/**
* Adds all of the {@code elements} to the {@code set}.
*
* @return {@code false} if any element is not added because the set already has the value.
*/
private static boolean addAll(@NonNull ArraySet<Integer> set, @NonNull int... elements) {
boolean result = true;
for (int i = 0; i < elements.length; i++) {
result &= set.add(elements[i]);
}
return result;
}
@Override
public SubscriptionPlan[] getSubscriptionPlans(int subId, String callingPackage) {
enforceSubscriptionPlanAccess(subId, Binder.getCallingUid(), callingPackage);
final String fake = SystemProperties.get("fw.fake_plan");
if (!TextUtils.isEmpty(fake)) {
final List<SubscriptionPlan> plans = new ArrayList<>();
if ("month_hard".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2007-03-14T00:00:00.000Z"))
.setTitle("G-Mobile")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_BILLED)
.setDataUsage(1 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(36).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile Happy")
.setDataLimit(SubscriptionPlan.BYTES_UNLIMITED,
SubscriptionPlan.LIMIT_BEHAVIOR_BILLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(36).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile, Charged after limit")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_BILLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(36).toInstant().toEpochMilli())
.build());
} else if ("month_soft".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2007-03-14T00:00:00.000Z"))
.setTitle("G-Mobile is the carriers name who this plan belongs to")
.setSummary("Crazy unlimited bandwidth plan with incredibly long title "
+ "that should be cut off to prevent UI from looking terrible")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(1 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile, Throttled after limit")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile, No data connection after limit")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_DISABLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
} else if ("month_over".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2007-03-14T00:00:00.000Z"))
.setTitle("G-Mobile is the carriers name who this plan belongs to")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(6 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile, Throttled after limit")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile, No data connection after limit")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_DISABLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
} else if ("month_none".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2007-03-14T00:00:00.000Z"))
.setTitle("G-Mobile")
.build());
} else if ("prepaid".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createNonrecurring(ZonedDateTime.now().minusDays(20),
ZonedDateTime.now().plusDays(10))
.setTitle("G-Mobile")
.setDataLimit(512 * TrafficStats.MB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_DISABLED)
.setDataUsage(100 * TrafficStats.MB_IN_BYTES,
ZonedDateTime.now().minusHours(3).toInstant().toEpochMilli())
.build());
} else if ("prepaid_crazy".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createNonrecurring(ZonedDateTime.now().minusDays(20),
ZonedDateTime.now().plusDays(10))
.setTitle("G-Mobile Anytime")
.setDataLimit(512 * TrafficStats.MB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_DISABLED)
.setDataUsage(100 * TrafficStats.MB_IN_BYTES,
ZonedDateTime.now().minusHours(3).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createNonrecurring(ZonedDateTime.now().minusDays(10),
ZonedDateTime.now().plusDays(20))
.setTitle("G-Mobile Nickel Nights")
.setSummary("5¢/GB between 1-5AM")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(15 * TrafficStats.MB_IN_BYTES,
ZonedDateTime.now().minusHours(30).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createNonrecurring(ZonedDateTime.now().minusDays(10),
ZonedDateTime.now().plusDays(20))
.setTitle("G-Mobile Bonus 3G")
.setSummary("Unlimited 3G data")
.setDataLimit(1 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(300 * TrafficStats.MB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
} else if ("unlimited".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createNonrecurring(ZonedDateTime.now().minusDays(20),
ZonedDateTime.now().plusDays(10))
.setTitle("G-Mobile Awesome")
.setDataLimit(SubscriptionPlan.BYTES_UNLIMITED,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(50 * TrafficStats.MB_IN_BYTES,
ZonedDateTime.now().minusHours(3).toInstant().toEpochMilli())
.build());
}
return plans.toArray(new SubscriptionPlan[plans.size()]);
}
synchronized (mNetworkPoliciesSecondLock) {
// Only give out plan details to the package that defined them,
// so that we don't risk leaking plans between apps. We always
// let in core system components (like the Settings app).
final String ownerPackage = mSubscriptionPlansOwner.get(subId);
if (Objects.equals(ownerPackage, callingPackage)
|| (UserHandle.getCallingAppId() == android.os.Process.SYSTEM_UID)
|| (UserHandle.getCallingAppId() == android.os.Process.PHONE_UID)) {
return mSubscriptionPlans.get(subId);
} else {
Log.w(TAG, "Not returning plans because caller " + callingPackage
+ " doesn't match owner " + ownerPackage);
return null;
}
}
}
@Override
public void setSubscriptionPlans(int subId, SubscriptionPlan[] plans, String callingPackage) {
enforceSubscriptionPlanAccess(subId, Binder.getCallingUid(), callingPackage);
enforceSubscriptionPlanValidity(plans);
for (SubscriptionPlan plan : plans) {
Objects.requireNonNull(plan);
}
final long token = Binder.clearCallingIdentity();
try {
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
mSubscriptionPlans.put(subId, plans);
mSubscriptionPlansOwner.put(subId, callingPackage);
final String subscriberId = mSubIdToSubscriberId.get(subId, null);
if (subscriberId != null) {
ensureActiveMobilePolicyAL(subId, subscriberId);
maybeUpdateMobilePolicyCycleAL(subId, subscriberId);
} else {
Slog.wtf(TAG, "Missing subscriberId for subId " + subId);
}
handleNetworkPoliciesUpdateAL(true);
}
}
final Intent intent = new Intent(SubscriptionManager.ACTION_SUBSCRIPTION_PLANS_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
intent.putExtra(SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX, subId);
mContext.sendBroadcast(intent, android.Manifest.permission.MANAGE_SUBSCRIPTION_PLANS);
mHandler.sendMessage(
mHandler.obtainMessage(MSG_SUBSCRIPTION_PLANS_CHANGED, subId, 0, plans));
} finally {
Binder.restoreCallingIdentity(token);
}
}
/**
* Only visible for testing purposes. This doesn't give any access to
* existing plans; it simply lets the debug package define new plans.
*/
void setSubscriptionPlansOwner(int subId, String packageName) {
mContext.enforceCallingOrSelfPermission(NETWORK_SETTINGS, TAG);
SystemProperties.set(PROP_SUB_PLAN_OWNER + "." + subId, packageName);
}
@Override
public String getSubscriptionPlansOwner(int subId) {
if (UserHandle.getCallingAppId() != android.os.Process.SYSTEM_UID) {
throw new SecurityException();
}
synchronized (mNetworkPoliciesSecondLock) {
return mSubscriptionPlansOwner.get(subId);
}
}
@Override
public void setSubscriptionOverride(int subId, int overrideMask, int overrideValue,
long timeoutMillis, String callingPackage) {
enforceSubscriptionPlanAccess(subId, Binder.getCallingUid(), callingPackage);
// We can only override when carrier told us about plans
synchronized (mNetworkPoliciesSecondLock) {
final SubscriptionPlan plan = getPrimarySubscriptionPlanLocked(subId);
if (plan == null
|| plan.getDataLimitBehavior() == SubscriptionPlan.LIMIT_BEHAVIOR_UNKNOWN) {
throw new IllegalStateException(
"Must provide valid SubscriptionPlan to enable overriding");
}
}
// Only allow overrides when feature is enabled. However, we always
// allow disabling of overrides for safety reasons.
final boolean overrideEnabled = Settings.Global.getInt(mContext.getContentResolver(),
NETPOLICY_OVERRIDE_ENABLED, 1) != 0;
if (overrideEnabled || overrideValue == 0) {
mHandler.sendMessage(mHandler.obtainMessage(MSG_SUBSCRIPTION_OVERRIDE,
overrideMask, overrideValue, subId));
if (timeoutMillis > 0) {
mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_SUBSCRIPTION_OVERRIDE,
overrideMask, 0, subId), timeoutMillis);
}
}
}
/**
* Get multipath preference value for the given network.
*/
public int getMultipathPreference(Network network) {
final Integer preference = mMultipathPolicyTracker.getMultipathPreference(network);
if (preference != null) {
return preference;
}
return 0;
}
@Override
protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
if (!DumpUtils.checkDumpPermission(mContext, TAG, writer)) return;
final IndentingPrintWriter fout = new IndentingPrintWriter(writer, " ");
final ArraySet<String> argSet = new ArraySet<String>(args.length);
for (String arg : args) {
argSet.add(arg);
}
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
if (argSet.contains("--unsnooze")) {
for (int i = mNetworkPolicy.size()-1; i >= 0; i--) {
mNetworkPolicy.valueAt(i).clearSnooze();
}
handleNetworkPoliciesUpdateAL(true);
fout.println("Cleared snooze timestamps");
return;
}
fout.print("System ready: "); fout.println(mSystemReady);
fout.print("Restrict background: "); fout.println(mRestrictBackground);
fout.print("Restrict power: "); fout.println(mRestrictPower);
fout.print("Device idle: "); fout.println(mDeviceIdleMode);
fout.print("Restricted networking mode: "); fout.println(mRestrictedNetworkingMode);
synchronized (mMeteredIfacesLock) {
fout.print("Metered ifaces: ");
fout.println(mMeteredIfaces);
}
fout.println();
fout.print("mRestrictBackgroundLowPowerMode: " + mRestrictBackgroundLowPowerMode);
fout.print("mRestrictBackgroundBeforeBsm: " + mRestrictBackgroundBeforeBsm);
fout.print("mLoadedRestrictBackground: " + mLoadedRestrictBackground);
fout.print("mRestrictBackgroundChangedInBsm: " + mRestrictBackgroundChangedInBsm);
fout.println();
fout.println("Network policies:");
fout.increaseIndent();
for (int i = 0; i < mNetworkPolicy.size(); i++) {
fout.println(mNetworkPolicy.valueAt(i).toString());
}
fout.decreaseIndent();
fout.println();
fout.println("Subscription plans:");
fout.increaseIndent();
for (int i = 0; i < mSubscriptionPlans.size(); i++) {
final int subId = mSubscriptionPlans.keyAt(i);
fout.println("Subscriber ID " + subId + ":");
fout.increaseIndent();
final SubscriptionPlan[] plans = mSubscriptionPlans.valueAt(i);
if (!ArrayUtils.isEmpty(plans)) {
for (SubscriptionPlan plan : plans) {
fout.println(plan);
}
}
fout.decreaseIndent();
}
fout.decreaseIndent();
fout.println();
fout.println("Active subscriptions:");
fout.increaseIndent();
for (int i = 0; i < mSubIdToSubscriberId.size(); i++) {
final int subId = mSubIdToSubscriberId.keyAt(i);
final String subscriberId = mSubIdToSubscriberId.valueAt(i);
fout.println(subId + "=" + NetworkIdentity.scrubSubscriberId(subscriberId));
}
fout.decreaseIndent();
fout.println();
for (String[] mergedSubscribers : mMergedSubscriberIds) {
fout.println("Merged subscriptions: " + Arrays.toString(
NetworkIdentity.scrubSubscriberId(mergedSubscribers)));
}
fout.println();
fout.println("Policy for UIDs:");
fout.increaseIndent();
int size = mUidPolicy.size();
for (int i = 0; i < size; i++) {
final int uid = mUidPolicy.keyAt(i);
final int policy = mUidPolicy.valueAt(i);
fout.print("UID=");
fout.print(uid);
fout.print(" policy=");
fout.print(uidPoliciesToString(policy));
fout.println();
}
fout.decreaseIndent();
size = mPowerSaveWhitelistExceptIdleAppIds.size();
if (size > 0) {
fout.println("Power save whitelist (except idle) app ids:");
fout.increaseIndent();
for (int i = 0; i < size; i++) {
fout.print("UID=");
fout.print(mPowerSaveWhitelistExceptIdleAppIds.keyAt(i));
fout.print(": ");
fout.print(mPowerSaveWhitelistExceptIdleAppIds.valueAt(i));
fout.println();
}
fout.decreaseIndent();
}
size = mPowerSaveWhitelistAppIds.size();
if (size > 0) {
fout.println("Power save whitelist app ids:");
fout.increaseIndent();
for (int i = 0; i < size; i++) {
fout.print("UID=");
fout.print(mPowerSaveWhitelistAppIds.keyAt(i));
fout.print(": ");
fout.print(mPowerSaveWhitelistAppIds.valueAt(i));
fout.println();
}
fout.decreaseIndent();
}
size = mAppIdleTempWhitelistAppIds.size();
if (size > 0) {
fout.println("App idle whitelist app ids:");
fout.increaseIndent();
for (int i = 0; i < size; i++) {
fout.print("UID=");
fout.print(mAppIdleTempWhitelistAppIds.keyAt(i));
fout.print(": ");
fout.print(mAppIdleTempWhitelistAppIds.valueAt(i));
fout.println();
}
fout.decreaseIndent();
}
size = mDefaultRestrictBackgroundAllowlistUids.size();
if (size > 0) {
fout.println("Default restrict background allowlist uids:");
fout.increaseIndent();
for (int i = 0; i < size; i++) {
fout.print("UID=");
fout.print(mDefaultRestrictBackgroundAllowlistUids.keyAt(i));
fout.println();
}
fout.decreaseIndent();
}
size = mRestrictBackgroundAllowlistRevokedUids.size();
if (size > 0) {
fout.println("Default restrict background allowlist uids revoked by users:");
fout.increaseIndent();
for (int i = 0; i < size; i++) {
fout.print("UID=");
fout.print(mRestrictBackgroundAllowlistRevokedUids.keyAt(i));
fout.println();
}
fout.decreaseIndent();
}
final SparseBooleanArray knownUids = new SparseBooleanArray();
collectKeys(mUidState, knownUids);
collectKeys(mUidRules, knownUids);
fout.println("Status for all known UIDs:");
fout.increaseIndent();
size = knownUids.size();
for (int i = 0; i < size; i++) {
final int uid = knownUids.keyAt(i);
fout.print("UID=");
fout.print(uid);
final int state = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY);
fout.print(" state=");
fout.print(state);
if (state <= ActivityManager.PROCESS_STATE_TOP) {
fout.print(" (fg)");
} else {
fout.print(state <= ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE
? " (fg svc)" : " (bg)");
}
final int uidRules = mUidRules.get(uid, RULE_NONE);
fout.print(" rules=");
fout.print(uidRulesToString(uidRules));
fout.println();
}
fout.decreaseIndent();
fout.println("Status for just UIDs with rules:");
fout.increaseIndent();
size = mUidRules.size();
for (int i = 0; i < size; i++) {
final int uid = mUidRules.keyAt(i);
fout.print("UID=");
fout.print(uid);
final int uidRules = mUidRules.get(uid, RULE_NONE);
fout.print(" rules=");
fout.print(uidRulesToString(uidRules));
fout.println();
}
fout.decreaseIndent();
fout.println("Admin restricted uids for metered data:");
fout.increaseIndent();
size = mMeteredRestrictedUids.size();
for (int i = 0; i < size; ++i) {
fout.print("u" + mMeteredRestrictedUids.keyAt(i) + ": ");
fout.println(mMeteredRestrictedUids.valueAt(i));
}
fout.decreaseIndent();
fout.println();
mStatLogger.dump(fout);
mLogger.dumpLogs(fout);
}
}
fout.println();
mMultipathPolicyTracker.dump(fout);
}
@Override
public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err,
String[] args, ShellCallback callback, ResultReceiver resultReceiver) {
(new NetworkPolicyManagerShellCommand(mContext, this)).exec(
this, in, out, err, args, callback, resultReceiver);
}
void setDebugUid(int uid) {
mLogger.setDebugUid(uid);
}
@VisibleForTesting
boolean isUidForeground(int uid) {
synchronized (mUidRulesFirstLock) {
return isUidStateForeground(
mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY));
}
}
@GuardedBy("mUidRulesFirstLock")
private boolean isUidForegroundOnRestrictBackgroundUL(int uid) {
final int procState = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY);
return isProcStateAllowedWhileOnRestrictBackground(procState);
}
@GuardedBy("mUidRulesFirstLock")
private boolean isUidForegroundOnRestrictPowerUL(int uid) {
final int procState = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY);
return isProcStateAllowedWhileIdleOrPowerSaveMode(procState);
}
private boolean isUidStateForeground(int state) {
// only really in foreground when screen is also on
return state <= NetworkPolicyManager.FOREGROUND_THRESHOLD_STATE;
}
/**
* Process state of UID changed; if needed, will trigger
* {@link #updateRulesForDataUsageRestrictionsUL(int)} and
* {@link #updateRulesForPowerRestrictionsUL(int)}. Returns true if the state was updated.
*/
@GuardedBy("mUidRulesFirstLock")
private boolean updateUidStateUL(int uid, int uidState) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateUidStateUL");
try {
final int oldUidState = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY);
if (oldUidState != uidState) {
// state changed, push updated rules
mUidState.put(uid, uidState);
updateRestrictBackgroundRulesOnUidStatusChangedUL(uid, oldUidState, uidState);
if (isProcStateAllowedWhileIdleOrPowerSaveMode(oldUidState)
!= isProcStateAllowedWhileIdleOrPowerSaveMode(uidState) ) {
updateRuleForAppIdleUL(uid);
if (mDeviceIdleMode) {
updateRuleForDeviceIdleUL(uid);
}
if (mRestrictPower) {
updateRuleForRestrictPowerUL(uid);
}
updateRulesForPowerRestrictionsUL(uid);
}
return true;
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
return false;
}
@GuardedBy("mUidRulesFirstLock")
private boolean removeUidStateUL(int uid) {
final int index = mUidState.indexOfKey(uid);
if (index >= 0) {
final int oldUidState = mUidState.valueAt(index);
mUidState.removeAt(index);
if (oldUidState != ActivityManager.PROCESS_STATE_CACHED_EMPTY) {
updateRestrictBackgroundRulesOnUidStatusChangedUL(uid, oldUidState,
ActivityManager.PROCESS_STATE_CACHED_EMPTY);
if (mDeviceIdleMode) {
updateRuleForDeviceIdleUL(uid);
}
if (mRestrictPower) {
updateRuleForRestrictPowerUL(uid);
}
updateRulesForPowerRestrictionsUL(uid);
return true;
}
}
return false;
}
// adjust stats accounting based on foreground status
private void updateNetworkStats(int uid, boolean uidForeground) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK,
"updateNetworkStats: " + uid + "/" + (uidForeground ? "F" : "B"));
}
try {
mNetworkStats.setUidForeground(uid, uidForeground);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void updateRestrictBackgroundRulesOnUidStatusChangedUL(int uid, int oldUidState,
int newUidState) {
final boolean oldForeground =
isProcStateAllowedWhileOnRestrictBackground(oldUidState);
final boolean newForeground =
isProcStateAllowedWhileOnRestrictBackground(newUidState);
if (oldForeground != newForeground) {
updateRulesForDataUsageRestrictionsUL(uid);
}
}
@VisibleForTesting
boolean isRestrictedModeEnabled() {
synchronized (mUidRulesFirstLock) {
return mRestrictedNetworkingMode;
}
}
/**
* updates restricted mode state / access for all apps
* Called on initialization and when restricted mode is enabled / disabled.
*/
@VisibleForTesting
@GuardedBy("mUidRulesFirstLock")
void updateRestrictedModeAllowlistUL() {
mUidFirewallRestrictedModeRules.clear();
forEachUid("updateRestrictedModeAllowlist", uid -> {
final int oldUidRule = mUidRules.get(uid);
final int newUidRule = getNewRestrictedModeUidRule(uid, oldUidRule);
final boolean hasUidRuleChanged = oldUidRule != newUidRule;
final int newFirewallRule = getRestrictedModeFirewallRule(newUidRule);
// setUidFirewallRulesUL will allowlist all uids that are passed to it, so only add
// non-default rules.
if (newFirewallRule != FIREWALL_RULE_DEFAULT) {
mUidFirewallRestrictedModeRules.append(uid, newFirewallRule);
}
if (hasUidRuleChanged) {
mUidRules.put(uid, newUidRule);
mHandler.obtainMessage(MSG_RULES_CHANGED, uid, newUidRule).sendToTarget();
}
});
if (mRestrictedNetworkingMode) {
// firewall rules only need to be set when this mode is being enabled.
setUidFirewallRulesUL(FIREWALL_CHAIN_RESTRICTED, mUidFirewallRestrictedModeRules);
}
enableFirewallChainUL(FIREWALL_CHAIN_RESTRICTED, mRestrictedNetworkingMode);
}
// updates restricted mode state / access for a single app / uid.
@VisibleForTesting
@GuardedBy("mUidRulesFirstLock")
void updateRestrictedModeForUidUL(int uid) {
final int oldUidRule = mUidRules.get(uid);
final int newUidRule = getNewRestrictedModeUidRule(uid, oldUidRule);
final boolean hasUidRuleChanged = oldUidRule != newUidRule;
if (hasUidRuleChanged) {
mUidRules.put(uid, newUidRule);
mHandler.obtainMessage(MSG_RULES_CHANGED, uid, newUidRule).sendToTarget();
}
// if restricted networking mode is on, and the app has an access exemption, the uid rule
// will not change, but the firewall rule will have to be updated.
if (mRestrictedNetworkingMode) {
// Note: setUidFirewallRule also updates mUidFirewallRestrictedModeRules.
// In this case, default firewall rules can also be added.
setUidFirewallRule(FIREWALL_CHAIN_RESTRICTED, uid,
getRestrictedModeFirewallRule(newUidRule));
}
}
private int getNewRestrictedModeUidRule(int uid, int oldUidRule) {
int newRule = oldUidRule;
newRule &= ~MASK_RESTRICTED_MODE_NETWORKS;
if (mRestrictedNetworkingMode && !hasRestrictedModeAccess(uid)) {
newRule |= RULE_REJECT_RESTRICTED_MODE;
}
return newRule;
}
private static int getRestrictedModeFirewallRule(int uidRule) {
if ((uidRule & RULE_REJECT_RESTRICTED_MODE) != 0) {
// rejected in restricted mode, this is the default behavior.
return FIREWALL_RULE_DEFAULT;
} else {
return FIREWALL_RULE_ALLOW;
}
}
private boolean hasRestrictedModeAccess(int uid) {
try {
// TODO: this needs to be kept in sync with
// PermissionMonitor#hasRestrictedNetworkPermission
return mIPm.checkUidPermission(CONNECTIVITY_USE_RESTRICTED_NETWORKS, uid)
== PERMISSION_GRANTED
|| mIPm.checkUidPermission(NETWORK_STACK, uid) == PERMISSION_GRANTED
|| mIPm.checkUidPermission(PERMISSION_MAINLINE_NETWORK_STACK, uid)
== PERMISSION_GRANTED;
} catch (RemoteException e) {
return false;
}
}
@GuardedBy("mUidRulesFirstLock")
void updateRulesForPowerSaveUL() {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForPowerSaveUL");
try {
updateRulesForWhitelistedPowerSaveUL(mRestrictPower, FIREWALL_CHAIN_POWERSAVE,
mUidFirewallPowerSaveRules);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
@GuardedBy("mUidRulesFirstLock")
void updateRuleForRestrictPowerUL(int uid) {
updateRulesForWhitelistedPowerSaveUL(uid, mRestrictPower, FIREWALL_CHAIN_POWERSAVE);
}
@GuardedBy("mUidRulesFirstLock")
void updateRulesForDeviceIdleUL() {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForDeviceIdleUL");
try {
updateRulesForWhitelistedPowerSaveUL(mDeviceIdleMode, FIREWALL_CHAIN_DOZABLE,
mUidFirewallDozableRules);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
@GuardedBy("mUidRulesFirstLock")
void updateRuleForDeviceIdleUL(int uid) {
updateRulesForWhitelistedPowerSaveUL(uid, mDeviceIdleMode, FIREWALL_CHAIN_DOZABLE);
}
// NOTE: since both fw_dozable and fw_powersave uses the same map
// (mPowerSaveTempWhitelistAppIds) for allowlisting, we can reuse their logic in this method.
@GuardedBy("mUidRulesFirstLock")
private void updateRulesForWhitelistedPowerSaveUL(boolean enabled, int chain,
SparseIntArray rules) {
if (enabled) {
// Sync the whitelists before enabling the chain. We don't care about the rules if
// we are disabling the chain.
final SparseIntArray uidRules = rules;
uidRules.clear();
final List<UserInfo> users = mUserManager.getUsers();
for (int ui = users.size() - 1; ui >= 0; ui--) {
UserInfo user = users.get(ui);
updateRulesForWhitelistedAppIds(uidRules, mPowerSaveTempWhitelistAppIds, user.id);
updateRulesForWhitelistedAppIds(uidRules, mPowerSaveWhitelistAppIds, user.id);
if (chain == FIREWALL_CHAIN_POWERSAVE) {
updateRulesForWhitelistedAppIds(uidRules,
mPowerSaveWhitelistExceptIdleAppIds, user.id);
}
}
for (int i = mUidState.size() - 1; i >= 0; i--) {
if (isProcStateAllowedWhileIdleOrPowerSaveMode(mUidState.valueAt(i))) {
uidRules.put(mUidState.keyAt(i), FIREWALL_RULE_ALLOW);
}
}
setUidFirewallRulesUL(chain, uidRules, CHAIN_TOGGLE_ENABLE);
} else {
setUidFirewallRulesUL(chain, null, CHAIN_TOGGLE_DISABLE);
}
}
private void updateRulesForWhitelistedAppIds(final SparseIntArray uidRules,
final SparseBooleanArray whitelistedAppIds, int userId) {
for (int i = whitelistedAppIds.size() - 1; i >= 0; --i) {
if (whitelistedAppIds.valueAt(i)) {
final int appId = whitelistedAppIds.keyAt(i);
final int uid = UserHandle.getUid(userId, appId);
uidRules.put(uid, FIREWALL_RULE_ALLOW);
}
}
}
/**
* Returns whether a uid is allowlisted from power saving restrictions (eg: Battery Saver, Doze
* mode, and app idle).
*
* @param deviceIdleMode if true then we don't consider
* {@link #mPowerSaveWhitelistExceptIdleAppIds} for checking if the {@param uid} is
* allowlisted.
*/
@GuardedBy("mUidRulesFirstLock")
private boolean isWhitelistedFromPowerSaveUL(int uid, boolean deviceIdleMode) {
final int appId = UserHandle.getAppId(uid);
boolean isWhitelisted = mPowerSaveTempWhitelistAppIds.get(appId)
|| mPowerSaveWhitelistAppIds.get(appId);
if (!deviceIdleMode) {
isWhitelisted = isWhitelisted || mPowerSaveWhitelistExceptIdleAppIds.get(appId);
}
return isWhitelisted;
}
// NOTE: since both fw_dozable and fw_powersave uses the same map
// (mPowerSaveTempWhitelistAppIds) for allowlisting, we can reuse their logic in this method.
@GuardedBy("mUidRulesFirstLock")
private void updateRulesForWhitelistedPowerSaveUL(int uid, boolean enabled, int chain) {
if (enabled) {
final boolean isWhitelisted = isWhitelistedFromPowerSaveUL(uid,
chain == FIREWALL_CHAIN_DOZABLE);
if (isWhitelisted || isUidForegroundOnRestrictPowerUL(uid)) {
setUidFirewallRule(chain, uid, FIREWALL_RULE_ALLOW);
} else {
setUidFirewallRule(chain, uid, FIREWALL_RULE_DEFAULT);
}
}
}
@GuardedBy("mUidRulesFirstLock")
void updateRulesForAppIdleUL() {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForAppIdleUL");
try {
final SparseIntArray uidRules = mUidFirewallStandbyRules;
uidRules.clear();
// Fully update the app idle firewall chain.
final List<UserInfo> users = mUserManager.getUsers();
for (int ui = users.size() - 1; ui >= 0; ui--) {
UserInfo user = users.get(ui);
int[] idleUids = mUsageStats.getIdleUidsForUser(user.id);
for (int uid : idleUids) {
if (!mPowerSaveTempWhitelistAppIds.get(UserHandle.getAppId(uid), false)) {
// quick check: if this uid doesn't have INTERNET permission, it
// doesn't have network access anyway, so it is a waste to mess
// with it here.
if (hasInternetPermissionUL(uid) && !isUidForegroundOnRestrictPowerUL(uid)) {
uidRules.put(uid, FIREWALL_RULE_DENY);
}
}
}
}
setUidFirewallRulesUL(FIREWALL_CHAIN_STANDBY, uidRules, CHAIN_TOGGLE_NONE);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
@GuardedBy("mUidRulesFirstLock")
void updateRuleForAppIdleUL(int uid) {
if (!isUidValidForDenylistRulesUL(uid)) return;
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRuleForAppIdleUL: " + uid );
}
try {
int appId = UserHandle.getAppId(uid);
if (!mPowerSaveTempWhitelistAppIds.get(appId) && isUidIdle(uid)
&& !isUidForegroundOnRestrictPowerUL(uid)) {
setUidFirewallRule(FIREWALL_CHAIN_STANDBY, uid, FIREWALL_RULE_DENY);
if (LOGD) Log.d(TAG, "updateRuleForAppIdleUL DENY " + uid);
} else {
setUidFirewallRule(FIREWALL_CHAIN_STANDBY, uid, FIREWALL_RULE_DEFAULT);
if (LOGD) Log.d(TAG, "updateRuleForAppIdleUL " + uid + " to DEFAULT");
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
/**
* Toggle the firewall standby chain and inform listeners if the uid rules have effectively
* changed.
*/
@GuardedBy("mUidRulesFirstLock")
private void updateRulesForAppIdleParoleUL() {
final boolean paroled = mAppStandby.isInParole();
final boolean enableChain = !paroled;
int ruleCount = mUidFirewallStandbyRules.size();
final SparseIntArray blockedUids = new SparseIntArray();
for (int i = 0; i < ruleCount; i++) {
final int uid = mUidFirewallStandbyRules.keyAt(i);
if (!isUidValidForDenylistRulesUL(uid)) {
continue;
}
int oldRules = mUidRules.get(uid);
if (enableChain) {
// Chain wasn't enabled before and the other power-related
// chains are allowlists, so we can clear the
// MASK_ALL_NETWORKS part of the rules and re-inform listeners if
// the effective rules result in blocking network access.
oldRules &= MASK_METERED_NETWORKS;
} else {
// Skip if it had no restrictions to begin with
if ((oldRules & MASK_ALL_NETWORKS) == 0) continue;
}
final boolean isUidIdle = !paroled && isUidIdle(uid);
if (isUidIdle && !mPowerSaveTempWhitelistAppIds.get(UserHandle.getAppId(uid))
&& !isUidForegroundOnRestrictPowerUL(uid)) {
mUidFirewallStandbyRules.put(uid, FIREWALL_RULE_DENY);
blockedUids.put(uid, FIREWALL_RULE_DENY);
} else {
mUidFirewallStandbyRules.put(uid, FIREWALL_RULE_DEFAULT);
}
final int newUidRules = updateRulesForPowerRestrictionsUL(uid, oldRules,
isUidIdle);
if (newUidRules == RULE_NONE) {
mUidRules.delete(uid);
} else {
mUidRules.put(uid, newUidRules);
}
}
setUidFirewallRulesUL(FIREWALL_CHAIN_STANDBY, blockedUids,
enableChain ? CHAIN_TOGGLE_ENABLE : CHAIN_TOGGLE_DISABLE);
}
/**
* Update rules that might be changed by {@link #mRestrictBackground},
* {@link #mRestrictPower}, or {@link #mDeviceIdleMode} value.
*/
@GuardedBy({"mUidRulesFirstLock", "mNetworkPoliciesSecondLock"})
private void updateRulesForGlobalChangeAL(boolean restrictedNetworksChanged) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK,
"updateRulesForGlobalChangeAL: " + (restrictedNetworksChanged ? "R" : "-"));
}
try {
updateRulesForAppIdleUL();
updateRulesForRestrictPowerUL();
updateRulesForRestrictBackgroundUL();
updateRestrictedModeAllowlistUL();
// If the set of restricted networks may have changed, re-evaluate those.
if (restrictedNetworksChanged) {
normalizePoliciesNL();
updateNetworkRulesNL();
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
// TODO: rename / document to make it clear these are global (not app-specific) rules
@GuardedBy("mUidRulesFirstLock")
private void updateRulesForRestrictPowerUL() {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForRestrictPowerUL");
try {
updateRulesForDeviceIdleUL();
updateRulesForPowerSaveUL();
forEachUid("updateRulesForRestrictPower",
uid -> updateRulesForPowerRestrictionsUL(uid));
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
@GuardedBy("mUidRulesFirstLock")
private void updateRulesForRestrictBackgroundUL() {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForRestrictBackgroundUL");
try {
forEachUid("updateRulesForRestrictBackground",
uid -> updateRulesForDataUsageRestrictionsUL(uid));
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void forEachUid(String tag, IntConsumer consumer) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "forEachUid-" + tag);
}
try {
// update rules for all installed applications
final PackageManager pm = mContext.getPackageManager();
final List<UserInfo> users;
final List<ApplicationInfo> apps;
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "list-users");
try {
users = mUserManager.getUsers();
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "list-uids");
try {
apps = pm.getInstalledApplications(
PackageManager.MATCH_ANY_USER | PackageManager.MATCH_DISABLED_COMPONENTS
| PackageManager.MATCH_DIRECT_BOOT_AWARE
| PackageManager.MATCH_DIRECT_BOOT_UNAWARE);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
final int usersSize = users.size();
final int appsSize = apps.size();
for (int i = 0; i < usersSize; i++) {
final UserInfo user = users.get(i);
for (int j = 0; j < appsSize; j++) {
final ApplicationInfo app = apps.get(j);
final int uid = UserHandle.getUid(user.id, app.uid);
consumer.accept(uid);
}
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
@GuardedBy("mUidRulesFirstLock")
private void updateRulesForTempWhitelistChangeUL(int appId) {
final List<UserInfo> users = mUserManager.getUsers();
final int numUsers = users.size();
for (int i = 0; i < numUsers; i++) {
final UserInfo user = users.get(i);
int uid = UserHandle.getUid(user.id, appId);
// Update external firewall rules.
updateRuleForAppIdleUL(uid);
updateRuleForDeviceIdleUL(uid);
updateRuleForRestrictPowerUL(uid);
// Update internal rules.
updateRulesForPowerRestrictionsUL(uid);
}
}
// TODO: the MEDIA / DRM restriction might not be needed anymore, in which case both
// methods below could be merged into a isUidValidForRules() method.
@GuardedBy("mUidRulesFirstLock")
private boolean isUidValidForDenylistRulesUL(int uid) {
// allow rules on specific system services, and any apps
if (uid == android.os.Process.MEDIA_UID || uid == android.os.Process.DRM_UID
|| isUidValidForAllowlistRulesUL(uid)) {
return true;
}
return false;
}
@GuardedBy("mUidRulesFirstLock")
private boolean isUidValidForAllowlistRulesUL(int uid) {
return UserHandle.isApp(uid) && hasInternetPermissionUL(uid);
}
/**
* Set whether or not an app should be allowlisted for network access while in app idle. Other
* power saving restrictions may still apply.
*/
@VisibleForTesting
void setAppIdleWhitelist(int uid, boolean shouldWhitelist) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
synchronized (mUidRulesFirstLock) {
if (mAppIdleTempWhitelistAppIds.get(uid) == shouldWhitelist) {
// No change.
return;
}
final long token = Binder.clearCallingIdentity();
try {
mLogger.appIdleWlChanged(uid, shouldWhitelist);
if (shouldWhitelist) {
mAppIdleTempWhitelistAppIds.put(uid, true);
} else {
mAppIdleTempWhitelistAppIds.delete(uid);
}
updateRuleForAppIdleUL(uid);
updateRulesForPowerRestrictionsUL(uid);
} finally {
Binder.restoreCallingIdentity(token);
}
}
}
/** Return the list of UIDs currently in the app idle allowlist. */
@VisibleForTesting
int[] getAppIdleWhitelist() {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
synchronized (mUidRulesFirstLock) {
final int len = mAppIdleTempWhitelistAppIds.size();
int[] uids = new int[len];
for (int i = 0; i < len; ++i) {
uids[i] = mAppIdleTempWhitelistAppIds.keyAt(i);
}
return uids;
}
}
/** Returns if the UID is currently considered idle. */
@VisibleForTesting
boolean isUidIdle(int uid) {
synchronized (mUidRulesFirstLock) {
if (mAppIdleTempWhitelistAppIds.get(uid)) {
// UID is temporarily allowlisted.
return false;
}
}
final String[] packages = mContext.getPackageManager().getPackagesForUid(uid);
final int userId = UserHandle.getUserId(uid);
if (packages != null) {
for (String packageName : packages) {
if (!mUsageStats.isAppIdle(packageName, uid, userId)) {
return false;
}
}
}
return true;
}
/**
* Checks if an uid has INTERNET permissions.
* <p>
* Useful for the cases where the lack of network access can simplify the rules.
*/
@GuardedBy("mUidRulesFirstLock")
private boolean hasInternetPermissionUL(int uid) {
try {
if (mInternetPermissionMap.get(uid)) {
return true;
}
// If the cache shows that uid doesn't have internet permission,
// then always re-check with PackageManager just to be safe.
final boolean hasPermission = mIPm.checkUidPermission(Manifest.permission.INTERNET,
uid) == PackageManager.PERMISSION_GRANTED;
mInternetPermissionMap.put(uid, hasPermission);
return hasPermission;
} catch (RemoteException e) {
}
return true;
}
/**
* Clears all state - internal and external - associated with an UID.
*/
@GuardedBy("mUidRulesFirstLock")
private void onUidDeletedUL(int uid) {
// First cleanup in-memory state synchronously...
mUidRules.delete(uid);
mUidPolicy.delete(uid);
mUidFirewallStandbyRules.delete(uid);
mUidFirewallDozableRules.delete(uid);
mUidFirewallPowerSaveRules.delete(uid);
mPowerSaveWhitelistExceptIdleAppIds.delete(uid);
mPowerSaveWhitelistAppIds.delete(uid);
mPowerSaveTempWhitelistAppIds.delete(uid);
mAppIdleTempWhitelistAppIds.delete(uid);
mUidFirewallRestrictedModeRules.delete(uid);
// ...then update iptables asynchronously.
mHandler.obtainMessage(MSG_RESET_FIREWALL_RULES_BY_UID, uid, 0).sendToTarget();
}
/**
* Applies network rules to bandwidth and firewall controllers based on uid policy.
*
* <p>There are currently 4 types of restriction rules:
* <ul>
* <li>Doze mode
* <li>App idle mode
* <li>Battery Saver Mode (also referred as power save).
* <li>Data Saver Mode (The Feature Formerly Known As 'Restrict Background Data').
* </ul>
*
* <p>This method changes both the external firewall rules and the internal state.
*/
@GuardedBy("mUidRulesFirstLock")
private void updateRestrictionRulesForUidUL(int uid) {
// Methods below only changes the firewall rules for the power-related modes.
updateRuleForDeviceIdleUL(uid);
updateRuleForAppIdleUL(uid);
updateRuleForRestrictPowerUL(uid);
// If the uid has the necessary permissions, then it should be added to the restricted mode
// firewall allowlist.
updateRestrictedModeForUidUL(uid);
// Update internal state for power-related modes.
updateRulesForPowerRestrictionsUL(uid);
// Update firewall and internal rules for Data Saver Mode.
updateRulesForDataUsageRestrictionsUL(uid);
}
/**
* Applies network rules to bandwidth controllers based on process state and user-defined
* restrictions (allowlist / denylist).
*
* <p>
* {@code netd} defines 3 firewall chains that govern whether an app has access to metered
* networks:
* <ul>
* <li>@{code bw_penalty_box}: UIDs added to this chain do not have access (denylist).
* <li>@{code bw_happy_box}: UIDs added to this chain have access (allowlist), unless they're
* also in denylist.
* <li>@{code bw_data_saver}: when enabled (through {@link #setRestrictBackground(boolean)}),
* no UIDs other than those in allowlist will have access.
* <ul>
*
* <p>The @{code bw_penalty_box} and @{code bw_happy_box} are primarily managed through the
* {@link #setUidPolicy(int, int)} and {@link #addRestrictBackgroundAllowlistedUid(int)} /
* {@link #removeRestrictBackgroundDenylistedUid(int)} methods (for denylist and allowlist
* respectively): these methods set the proper internal state (denylist / allowlist), then call
* this ({@link #updateRulesForDataUsageRestrictionsUL(int)}) to propagate the rules to
* {@link INetworkManagementService}, but this method should also be called in events (like
* Data Saver Mode flips or UID state changes) that might affect the foreground app, since the
* following rules should also be applied:
*
* <ul>
* <li>When Data Saver mode is on, the foreground app should be temporarily added to
* {@code bw_happy_box} before the @{code bw_data_saver} chain is enabled.
* <li>If the foreground app was restricted by the user (i.e. has the policy
* {@code POLICY_REJECT_METERED_BACKGROUND}), it should be temporarily removed from
* {@code bw_penalty_box}.
* <li>When the app leaves foreground state, the temporary changes above should be reverted.
* </ul>
*
* <p>For optimization, the rules are only applied on user apps that have internet access
* permission, since there is no need to change the {@code iptables} rule if the app does not
* have permission to use the internet.
*
* <p>The {@link #mUidRules} map is used to define the transtion of states of an UID.
*
*/
private void updateRulesForDataUsageRestrictionsUL(int uid) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK,
"updateRulesForDataUsageRestrictionsUL: " + uid);
}
try {
updateRulesForDataUsageRestrictionsULInner(uid);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void updateRulesForDataUsageRestrictionsULInner(int uid) {
if (!isUidValidForAllowlistRulesUL(uid)) {
if (LOGD) Slog.d(TAG, "no need to update restrict data rules for uid " + uid);
return;
}
final int uidPolicy = mUidPolicy.get(uid, POLICY_NONE);
final int oldUidRules = mUidRules.get(uid, RULE_NONE);
final boolean isForeground = isUidForegroundOnRestrictBackgroundUL(uid);
final boolean isRestrictedByAdmin = isRestrictedByAdminUL(uid);
final boolean isDenied = (uidPolicy & POLICY_REJECT_METERED_BACKGROUND) != 0;
final boolean isAllowed = (uidPolicy & POLICY_ALLOW_METERED_BACKGROUND) != 0;
// copy oldUidRules and clear out METERED_NETWORKS rules.
int newUidRules = oldUidRules & (~MASK_METERED_NETWORKS);
// First step: define the new rule based on user restrictions and foreground state.
if (isRestrictedByAdmin) {
newUidRules |= RULE_REJECT_METERED;
} else if (isForeground) {
if (isDenied || (mRestrictBackground && !isAllowed)) {
newUidRules |= RULE_TEMPORARY_ALLOW_METERED;
} else if (isAllowed) {
newUidRules |= RULE_ALLOW_METERED;
}
} else {
if (isDenied) {
newUidRules |= RULE_REJECT_METERED;
} else if (mRestrictBackground && isAllowed) {
newUidRules |= RULE_ALLOW_METERED;
}
}
if (LOGV) {
Log.v(TAG, "updateRuleForRestrictBackgroundUL(" + uid + ")"
+ ": isForeground=" +isForeground
+ ", isDenied=" + isDenied
+ ", isAllowed=" + isAllowed
+ ", isRestrictedByAdmin=" + isRestrictedByAdmin
+ ", oldRule=" + uidRulesToString(oldUidRules & MASK_METERED_NETWORKS)
+ ", newRule=" + uidRulesToString(newUidRules & MASK_METERED_NETWORKS)
+ ", newUidRules=" + uidRulesToString(newUidRules)
+ ", oldUidRules=" + uidRulesToString(oldUidRules));
}
if (newUidRules == RULE_NONE) {
mUidRules.delete(uid);
} else {
mUidRules.put(uid, newUidRules);
}
// Second step: apply bw changes based on change of state.
if (newUidRules != oldUidRules) {
if (hasRule(newUidRules, RULE_TEMPORARY_ALLOW_METERED)) {
// Temporarily allow foreground app, removing from denylist if necessary
// (since bw_penalty_box prevails over bw_happy_box).
setMeteredNetworkAllowlist(uid, true);
// TODO: if statement below is used to avoid an unnecessary call to netd / iptables,
// but ideally it should be just:
// setMeteredNetworkDenylist(uid, isDenied);
if (isDenied) {
setMeteredNetworkDenylist(uid, false);
}
} else if (hasRule(oldUidRules, RULE_TEMPORARY_ALLOW_METERED)) {
// Remove temporary exemption from app that is not on foreground anymore.
// TODO: if statements below are used to avoid unnecessary calls to netd / iptables,
// but ideally they should be just:
// setMeteredNetworkAllowlist(uid, isAllowed);
// setMeteredNetworkDenylist(uid, isDenied);
if (!isAllowed) {
setMeteredNetworkAllowlist(uid, false);
}
if (isDenied || isRestrictedByAdmin) {
setMeteredNetworkDenylist(uid, true);
}
} else if (hasRule(newUidRules, RULE_REJECT_METERED)
|| hasRule(oldUidRules, RULE_REJECT_METERED)) {
// Flip state because app was explicitly added or removed to denylist.
setMeteredNetworkDenylist(uid, (isDenied || isRestrictedByAdmin));
if (hasRule(oldUidRules, RULE_REJECT_METERED) && isAllowed) {
// Since denial prevails over allowance, we need to handle the special case
// where app is allowed and denied at the same time (although such
// scenario should be blocked by the UI), then it is removed from the denylist.
setMeteredNetworkAllowlist(uid, isAllowed);
}
} else if (hasRule(newUidRules, RULE_ALLOW_METERED)
|| hasRule(oldUidRules, RULE_ALLOW_METERED)) {
// Flip state because app was explicitly added or removed to allowlist.
setMeteredNetworkAllowlist(uid, isAllowed);
} else {
// All scenarios should have been covered above.
Log.wtf(TAG, "Unexpected change of metered UID state for " + uid
+ ": foreground=" + isForeground
+ ", allowlisted=" + isAllowed
+ ", denylisted=" + isDenied
+ ", isRestrictedByAdmin=" + isRestrictedByAdmin
+ ", newRule=" + uidRulesToString(newUidRules)
+ ", oldRule=" + uidRulesToString(oldUidRules));
}
// Dispatch changed rule to existing listeners.
mHandler.obtainMessage(MSG_RULES_CHANGED, uid, newUidRules).sendToTarget();
}
}
/**
* Updates the power-related part of the {@link #mUidRules} for a given map, and notify external
* listeners in case of change.
* <p>
* There are 3 power-related rules that affects whether an app has background access on
* non-metered networks, and when the condition applies and the UID is not allowed for power
* restriction, it's added to the equivalent firewall chain:
* <ul>
* <li>App is idle: {@code fw_standby} firewall chain.
* <li>Device is idle: {@code fw_dozable} firewall chain.
* <li>Battery Saver Mode is on: {@code fw_powersave} firewall chain.
* </ul>
* <p>
* This method updates the power-related part of the {@link #mUidRules} for a given uid based on
* these modes, the UID process state (foreground or not), and the UID allowlist state.
* <p>
* <strong>NOTE: </strong>This method does not update the firewall rules on {@code netd}.
*/
@GuardedBy("mUidRulesFirstLock")
private void updateRulesForPowerRestrictionsUL(int uid) {
final int oldUidRules = mUidRules.get(uid, RULE_NONE);
final int newUidRules = updateRulesForPowerRestrictionsUL(uid, oldUidRules,
isUidIdle(uid));
if (newUidRules == RULE_NONE) {
mUidRules.delete(uid);
} else {
mUidRules.put(uid, newUidRules);
}
}
/**
* Similar to above but ignores idle state if app standby is currently disabled by parole.
*
* @param uid the uid of the app to update rules for
* @param oldUidRules the current rules for the uid, in order to determine if there's a change
* @param isUidIdle whether uid is idle or not
*
* @return the new computed rules for the uid
*/
@GuardedBy("mUidRulesFirstLock")
private int updateRulesForPowerRestrictionsUL(int uid, int oldUidRules, boolean isUidIdle) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK,
"updateRulesForPowerRestrictionsUL: " + uid + "/" + oldUidRules + "/"
+ (isUidIdle ? "I" : "-"));
}
try {
return updateRulesForPowerRestrictionsULInner(uid, oldUidRules, isUidIdle);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
@GuardedBy("mUidRulesFirstLock")
private int updateRulesForPowerRestrictionsULInner(int uid, int oldUidRules,
boolean isUidIdle) {
if (!isUidValidForDenylistRulesUL(uid)) {
if (LOGD) Slog.d(TAG, "no need to update restrict power rules for uid " + uid);
return RULE_NONE;
}
final boolean restrictMode = isUidIdle || mRestrictPower || mDeviceIdleMode;
final boolean isForeground = isUidForegroundOnRestrictPowerUL(uid);
final boolean isWhitelisted = isWhitelistedFromPowerSaveUL(uid, mDeviceIdleMode);
// Copy existing uid rules and clear ALL_NETWORK rules.
int newUidRules = oldUidRules & (~MASK_ALL_NETWORKS);
// First step: define the new rule based on user restrictions and foreground state.
// NOTE: if statements below could be inlined, but it's easier to understand the logic
// by considering the foreground and non-foreground states.
if (isForeground) {
if (restrictMode) {
newUidRules |= RULE_ALLOW_ALL;
}
} else if (restrictMode) {
newUidRules |= isWhitelisted ? RULE_ALLOW_ALL : RULE_REJECT_ALL;
}
if (LOGV) {
Log.v(TAG, "updateRulesForPowerRestrictionsUL(" + uid + ")"
+ ", isIdle: " + isUidIdle
+ ", mRestrictPower: " + mRestrictPower
+ ", mDeviceIdleMode: " + mDeviceIdleMode
+ ", isForeground=" + isForeground
+ ", isWhitelisted=" + isWhitelisted
+ ", oldRule=" + uidRulesToString(oldUidRules & MASK_ALL_NETWORKS)
+ ", newRule=" + uidRulesToString(newUidRules & MASK_ALL_NETWORKS)
+ ", newUidRules=" + uidRulesToString(newUidRules)
+ ", oldUidRules=" + uidRulesToString(oldUidRules));
}
// Second step: notify listeners if state changed.
if (newUidRules != oldUidRules) {
if ((newUidRules & MASK_ALL_NETWORKS) == RULE_NONE || hasRule(newUidRules,
RULE_ALLOW_ALL)) {
if (LOGV) Log.v(TAG, "Allowing non-metered access for UID " + uid);
} else if (hasRule(newUidRules, RULE_REJECT_ALL)) {
if (LOGV) Log.v(TAG, "Rejecting non-metered access for UID " + uid);
} else {
// All scenarios should have been covered above
Log.wtf(TAG, "Unexpected change of non-metered UID state for " + uid
+ ": foreground=" + isForeground
+ ", whitelisted=" + isWhitelisted
+ ", newRule=" + uidRulesToString(newUidRules)
+ ", oldRule=" + uidRulesToString(oldUidRules));
}
mHandler.obtainMessage(MSG_RULES_CHANGED, uid, newUidRules).sendToTarget();
}
return newUidRules;
}
private class NetPolicyAppIdleStateChangeListener extends AppIdleStateChangeListener {
@Override
public void onAppIdleStateChanged(String packageName, int userId, boolean idle, int bucket,
int reason) {
try {
final int uid = mContext.getPackageManager().getPackageUidAsUser(packageName,
PackageManager.MATCH_UNINSTALLED_PACKAGES, userId);
synchronized (mUidRulesFirstLock) {
mLogger.appIdleStateChanged(uid, idle);
updateRuleForAppIdleUL(uid);
updateRulesForPowerRestrictionsUL(uid);
}
} catch (NameNotFoundException nnfe) {
}
}
@Override
public void onParoleStateChanged(boolean isParoleOn) {
synchronized (mUidRulesFirstLock) {
mLogger.paroleStateChanged(isParoleOn);
updateRulesForAppIdleParoleUL();
}
}
}
private void dispatchUidRulesChanged(INetworkPolicyListener listener, int uid, int uidRules) {
if (listener != null) {
try {
listener.onUidRulesChanged(uid, uidRules);
} catch (RemoteException ignored) {
}
}
}
private void dispatchMeteredIfacesChanged(INetworkPolicyListener listener,
String[] meteredIfaces) {
if (listener != null) {
try {
listener.onMeteredIfacesChanged(meteredIfaces);
} catch (RemoteException ignored) {
}
}
}
private void dispatchRestrictBackgroundChanged(INetworkPolicyListener listener,
boolean restrictBackground) {
if (listener != null) {
try {
listener.onRestrictBackgroundChanged(restrictBackground);
} catch (RemoteException ignored) {
}
}
}
private void dispatchUidPoliciesChanged(INetworkPolicyListener listener, int uid,
int uidPolicies) {
if (listener != null) {
try {
listener.onUidPoliciesChanged(uid, uidPolicies);
} catch (RemoteException ignored) {
}
}
}
private void dispatchSubscriptionOverride(INetworkPolicyListener listener, int subId,
int overrideMask, int overrideValue) {
if (listener != null) {
try {
listener.onSubscriptionOverride(subId, overrideMask, overrideValue);
} catch (RemoteException ignored) {
}
}
}
private void dispatchSubscriptionPlansChanged(INetworkPolicyListener listener, int subId,
SubscriptionPlan[] plans) {
if (listener != null) {
try {
listener.onSubscriptionPlansChanged(subId, plans);
} catch (RemoteException ignored) {
}
}
}
private final Handler.Callback mHandlerCallback = new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case MSG_RULES_CHANGED: {
final int uid = msg.arg1;
final int uidRules = msg.arg2;
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchUidRulesChanged(listener, uid, uidRules);
}
mListeners.finishBroadcast();
return true;
}
case MSG_METERED_IFACES_CHANGED: {
final String[] meteredIfaces = (String[]) msg.obj;
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchMeteredIfacesChanged(listener, meteredIfaces);
}
mListeners.finishBroadcast();
return true;
}
case MSG_STATS_PROVIDER_LIMIT_REACHED: {
mNetworkStats.forceUpdate();
synchronized (mNetworkPoliciesSecondLock) {
// Some providers might hit the limit reached event prior to others. Thus,
// re-calculate and update interface quota for every provider is needed.
updateNetworkRulesNL();
updateNetworkEnabledNL();
updateNotificationsNL();
}
return true;
}
case MSG_LIMIT_REACHED: {
final String iface = (String) msg.obj;
synchronized (mMeteredIfacesLock) {
// fast return if not needed.
if (!mMeteredIfaces.contains(iface)) {
return true;
}
}
// force stats update to make sure the service have the numbers that caused
// alert to trigger.
mNetworkStats.forceUpdate();
synchronized (mNetworkPoliciesSecondLock) {
updateNetworkRulesNL();
updateNetworkEnabledNL();
updateNotificationsNL();
}
return true;
}
case MSG_RESTRICT_BACKGROUND_CHANGED: {
final boolean restrictBackground = msg.arg1 != 0;
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchRestrictBackgroundChanged(listener, restrictBackground);
}
mListeners.finishBroadcast();
final Intent intent =
new Intent(ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED);
intent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
return true;
}
case MSG_POLICIES_CHANGED: {
final int uid = msg.arg1;
final int policy = msg.arg2;
final Boolean notifyApp = (Boolean) msg.obj;
// First notify internal listeners...
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchUidPoliciesChanged(listener, uid, policy);
}
mListeners.finishBroadcast();
// ...then apps listening to ACTION_RESTRICT_BACKGROUND_CHANGED
if (notifyApp.booleanValue()) {
broadcastRestrictBackgroundChanged(uid, notifyApp);
}
return true;
}
case MSG_ADVISE_PERSIST_THRESHOLD: {
final long lowestRule = (Long) msg.obj;
// make sure stats are recorded frequently enough; we aim
// for 2MB threshold for 2GB/month rules.
final long persistThreshold = lowestRule / 1000;
mNetworkStats.advisePersistThreshold(persistThreshold);
return true;
}
case MSG_UPDATE_INTERFACE_QUOTA: {
final String iface = (String) msg.obj;
// int params need to be stitched back into a long
final long quota = ((long) msg.arg1 << 32) | (msg.arg2 & 0xFFFFFFFFL);
removeInterfaceQuota(iface);
setInterfaceQuota(iface, quota);
mNetworkStats.setStatsProviderLimitAsync(iface, quota);
return true;
}
case MSG_REMOVE_INTERFACE_QUOTA: {
final String iface = (String) msg.obj;
removeInterfaceQuota(iface);
mNetworkStats.setStatsProviderLimitAsync(iface, QUOTA_UNLIMITED);
return true;
}
case MSG_RESET_FIREWALL_RULES_BY_UID: {
resetUidFirewallRules(msg.arg1);
return true;
}
case MSG_SUBSCRIPTION_OVERRIDE: {
final int overrideMask = msg.arg1;
final int overrideValue = msg.arg2;
final int subId = (int) msg.obj;
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchSubscriptionOverride(listener, subId, overrideMask, overrideValue);
}
mListeners.finishBroadcast();
return true;
}
case MSG_METERED_RESTRICTED_PACKAGES_CHANGED: {
final int userId = msg.arg1;
final Set<String> packageNames = (Set<String>) msg.obj;
setMeteredRestrictedPackagesInternal(packageNames, userId);
return true;
}
case MSG_SET_NETWORK_TEMPLATE_ENABLED: {
final NetworkTemplate template = (NetworkTemplate) msg.obj;
final boolean enabled = msg.arg1 != 0;
setNetworkTemplateEnabledInner(template, enabled);
return true;
}
case MSG_SUBSCRIPTION_PLANS_CHANGED: {
final SubscriptionPlan[] plans = (SubscriptionPlan[]) msg.obj;
final int subId = msg.arg1;
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchSubscriptionPlansChanged(listener, subId, plans);
}
mListeners.finishBroadcast();
return true;
}
default: {
return false;
}
}
}
};
private final Handler.Callback mUidEventHandlerCallback = new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case UID_MSG_STATE_CHANGED: {
final int uid = msg.arg1;
final int procState = msg.arg2;
final long procStateSeq = (Long) msg.obj;
handleUidChanged(uid, procState, procStateSeq);
return true;
}
case UID_MSG_GONE: {
final int uid = msg.arg1;
handleUidGone(uid);
return true;
}
default: {
return false;
}
}
}
};
void handleUidChanged(int uid, int procState, long procStateSeq) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "onUidStateChanged");
try {
boolean updated;
synchronized (mUidRulesFirstLock) {
// We received a uid state change callback, add it to the history so that it
// will be useful for debugging.
mLogger.uidStateChanged(uid, procState, procStateSeq);
// Now update the network policy rules as per the updated uid state.
updated = updateUidStateUL(uid, procState);
// Updating the network rules is done, so notify AMS about this.
mActivityManagerInternal.notifyNetworkPolicyRulesUpdated(uid, procStateSeq);
}
// Do this without the lock held. handleUidChanged() and handleUidGone() are
// called from the handler, so there's no multi-threading issue.
if (updated) {
updateNetworkStats(uid, isUidStateForeground(procState));
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
void handleUidGone(int uid) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "onUidGone");
try {
boolean updated;
synchronized (mUidRulesFirstLock) {
updated = removeUidStateUL(uid);
}
// Do this without the lock held. handleUidChanged() and handleUidGone() are
// called from the handler, so there's no multi-threading issue.
if (updated) {
updateNetworkStats(uid, false);
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void broadcastRestrictBackgroundChanged(int uid, Boolean changed) {
final PackageManager pm = mContext.getPackageManager();
final String[] packages = pm.getPackagesForUid(uid);
if (packages != null) {
final int userId = UserHandle.getUserId(uid);
for (String packageName : packages) {
final Intent intent =
new Intent(ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED);
intent.setPackage(packageName);
intent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
mContext.sendBroadcastAsUser(intent, UserHandle.of(userId));
}
}
}
private void setInterfaceQuotaAsync(String iface, long quotaBytes) {
// long quotaBytes split up into two ints to fit in message
mHandler.obtainMessage(MSG_UPDATE_INTERFACE_QUOTA, (int) (quotaBytes >> 32),
(int) (quotaBytes & 0xFFFFFFFF), iface).sendToTarget();
}
private void setInterfaceQuota(String iface, long quotaBytes) {
try {
mNetworkManager.setInterfaceQuota(iface, quotaBytes);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem setting interface quota", e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
private void removeInterfaceQuotaAsync(String iface) {
mHandler.obtainMessage(MSG_REMOVE_INTERFACE_QUOTA, iface).sendToTarget();
}
private void removeInterfaceQuota(String iface) {
try {
mNetworkManager.removeInterfaceQuota(iface);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem removing interface quota", e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
private void setMeteredNetworkDenylist(int uid, boolean enable) {
if (LOGV) Slog.v(TAG, "setMeteredNetworkDenylist " + uid + ": " + enable);
try {
mNetworkManager.setUidOnMeteredNetworkDenylist(uid, enable);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem setting denylist (" + enable + ") rules for " + uid, e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
private void setMeteredNetworkAllowlist(int uid, boolean enable) {
if (LOGV) Slog.v(TAG, "setMeteredNetworkAllowlist " + uid + ": " + enable);
try {
mNetworkManager.setUidOnMeteredNetworkAllowlist(uid, enable);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem setting allowlist (" + enable + ") rules for " + uid, e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
private static final int CHAIN_TOGGLE_NONE = 0;
private static final int CHAIN_TOGGLE_ENABLE = 1;
private static final int CHAIN_TOGGLE_DISABLE = 2;
@Retention(RetentionPolicy.SOURCE)
@IntDef(flag = false, value = {
CHAIN_TOGGLE_NONE,
CHAIN_TOGGLE_ENABLE,
CHAIN_TOGGLE_DISABLE
})
public @interface ChainToggleType {
}
/**
* Calls {@link #setUidFirewallRulesUL(int, SparseIntArray)} and
* {@link #enableFirewallChainUL(int, boolean)} synchronously.
*
* @param chain firewall chain.
* @param uidRules new UID rules; if {@code null}, only toggles chain state.
* @param toggle whether the chain should be enabled, disabled, or not changed.
*/
@GuardedBy("mUidRulesFirstLock")
private void setUidFirewallRulesUL(int chain, @Nullable SparseIntArray uidRules,
@ChainToggleType int toggle) {
if (uidRules != null) {
setUidFirewallRulesUL(chain, uidRules);
}
if (toggle != CHAIN_TOGGLE_NONE) {
enableFirewallChainUL(chain, toggle == CHAIN_TOGGLE_ENABLE);
}
}
/**
* Set uid rules on a particular firewall chain. This is going to synchronize the rules given
* here to netd. It will clean up dead rules and make sure the target chain only contains rules
* specified here.
*/
private void setUidFirewallRulesUL(int chain, SparseIntArray uidRules) {
try {
int size = uidRules.size();
int[] uids = new int[size];
int[] rules = new int[size];
for(int index = size - 1; index >= 0; --index) {
uids[index] = uidRules.keyAt(index);
rules[index] = uidRules.valueAt(index);
}
mNetworkManager.setFirewallUidRules(chain, uids, rules);
mLogger.firewallRulesChanged(chain, uids, rules);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem setting firewall uid rules", e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
/**
* Add or remove a uid to the firewall denylist for all network ifaces.
*/
private void setUidFirewallRule(int chain, int uid, int rule) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK,
"setUidFirewallRule: " + chain + "/" + uid + "/" + rule);
}
try {
if (chain == FIREWALL_CHAIN_DOZABLE) {
mUidFirewallDozableRules.put(uid, rule);
} else if (chain == FIREWALL_CHAIN_STANDBY) {
mUidFirewallStandbyRules.put(uid, rule);
} else if (chain == FIREWALL_CHAIN_POWERSAVE) {
mUidFirewallPowerSaveRules.put(uid, rule);
} else if (chain == FIREWALL_CHAIN_RESTRICTED) {
mUidFirewallRestrictedModeRules.put(uid, rule);
}
try {
mNetworkManager.setFirewallUidRule(chain, uid, rule);
mLogger.uidFirewallRuleChanged(chain, uid, rule);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem setting firewall uid rules", e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
/**
* Add or remove a uid to the firewall denylist for all network ifaces.
*/
@GuardedBy("mUidRulesFirstLock")
private void enableFirewallChainUL(int chain, boolean enable) {
if (mFirewallChainStates.indexOfKey(chain) >= 0 &&
mFirewallChainStates.get(chain) == enable) {
// All is the same, nothing to do.
return;
}
mFirewallChainStates.put(chain, enable);
try {
mNetworkManager.setFirewallChainEnabled(chain, enable);
mLogger.firewallChainEnabled(chain, enable);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem enable firewall chain", e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
/**
* Resets all firewall rules associated with an UID.
*/
private void resetUidFirewallRules(int uid) {
try {
mNetworkManager.setFirewallUidRule(FIREWALL_CHAIN_DOZABLE, uid, FIREWALL_RULE_DEFAULT);
mNetworkManager.setFirewallUidRule(FIREWALL_CHAIN_STANDBY, uid, FIREWALL_RULE_DEFAULT);
mNetworkManager
.setFirewallUidRule(FIREWALL_CHAIN_POWERSAVE, uid, FIREWALL_RULE_DEFAULT);
mNetworkManager
.setFirewallUidRule(FIREWALL_CHAIN_RESTRICTED, uid, FIREWALL_RULE_DEFAULT);
mNetworkManager.setUidOnMeteredNetworkAllowlist(uid, false);
mNetworkManager.setUidOnMeteredNetworkDenylist(uid, false);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem resetting firewall uid rules for " + uid, e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
@Deprecated
private long getTotalBytes(NetworkTemplate template, long start, long end) {
return getNetworkTotalBytes(template, start, end);
}
private long getNetworkTotalBytes(NetworkTemplate template, long start, long end) {
try {
return mNetworkStats.getNetworkTotalBytes(template, start, end);
} catch (RuntimeException e) {
Slog.w(TAG, "Failed to read network stats: " + e);
return 0;
}
}
private NetworkStats getNetworkUidBytes(NetworkTemplate template, long start, long end) {
try {
return mNetworkStats.getNetworkUidBytes(template, start, end);
} catch (RuntimeException e) {
Slog.w(TAG, "Failed to read network stats: " + e);
return new NetworkStats(SystemClock.elapsedRealtime(), 0);
}
}
private boolean isBandwidthControlEnabled() {
final long token = Binder.clearCallingIdentity();
try {
return mNetworkManager.isBandwidthControlEnabled();
} catch (RemoteException e) {
// ignored; service lives in system_server
return false;
} finally {
Binder.restoreCallingIdentity(token);
}
}
private static Intent buildAllowBackgroundDataIntent() {
return new Intent(ACTION_ALLOW_BACKGROUND);
}
private static Intent buildSnoozeWarningIntent(NetworkTemplate template) {
final Intent intent = new Intent(ACTION_SNOOZE_WARNING);
intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
intent.putExtra(EXTRA_NETWORK_TEMPLATE, template);
return intent;
}
private static Intent buildSnoozeRapidIntent(NetworkTemplate template) {
final Intent intent = new Intent(ACTION_SNOOZE_RAPID);
intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
intent.putExtra(EXTRA_NETWORK_TEMPLATE, template);
return intent;
}
private static Intent buildNetworkOverLimitIntent(Resources res, NetworkTemplate template) {
final Intent intent = new Intent();
intent.setComponent(ComponentName.unflattenFromString(
res.getString(R.string.config_networkOverLimitComponent)));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra(EXTRA_NETWORK_TEMPLATE, template);
return intent;
}
private static Intent buildViewDataUsageIntent(Resources res, NetworkTemplate template) {
final Intent intent = new Intent();
intent.setComponent(ComponentName.unflattenFromString(
res.getString(R.string.config_dataUsageSummaryComponent)));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra(EXTRA_NETWORK_TEMPLATE, template);
return intent;
}
@VisibleForTesting
void addIdleHandler(IdleHandler handler) {
mHandler.getLooper().getQueue().addIdleHandler(handler);
}
@GuardedBy("mUidRulesFirstLock")
@VisibleForTesting
void updateRestrictBackgroundByLowPowerModeUL(final PowerSaveState result) {
if (mRestrictBackgroundLowPowerMode == result.batterySaverEnabled) {
// Nothing changed. Nothing to do.
return;
}
mRestrictBackgroundLowPowerMode = result.batterySaverEnabled;
boolean restrictBackground = mRestrictBackgroundLowPowerMode;
boolean shouldInvokeRestrictBackground;
// store the temporary mRestrictBackgroundChangedInBsm and update it at the end.
boolean localRestrictBgChangedInBsm = mRestrictBackgroundChangedInBsm;
if (mRestrictBackgroundLowPowerMode) {
// Try to turn on restrictBackground if (1) it is off and (2) batter saver need to
// turn it on.
shouldInvokeRestrictBackground = !mRestrictBackground;
mRestrictBackgroundBeforeBsm = mRestrictBackground;
localRestrictBgChangedInBsm = false;
} else {
// Try to restore the restrictBackground if it doesn't change in bsm
shouldInvokeRestrictBackground = !mRestrictBackgroundChangedInBsm;
restrictBackground = mRestrictBackgroundBeforeBsm;
}
if (shouldInvokeRestrictBackground) {
setRestrictBackgroundUL(restrictBackground, "low_power");
}
// Change it at last so setRestrictBackground() won't affect this variable
mRestrictBackgroundChangedInBsm = localRestrictBgChangedInBsm;
}
private static void collectKeys(SparseIntArray source, SparseBooleanArray target) {
final int size = source.size();
for (int i = 0; i < size; i++) {
target.put(source.keyAt(i), true);
}
}
@Override
public void factoryReset(String subscriber) {
mContext.enforceCallingOrSelfPermission(NETWORK_SETTINGS, TAG);
if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) {
return;
}
// Turn mobile data limit off
NetworkPolicy[] policies = getNetworkPolicies(mContext.getOpPackageName());
NetworkTemplate template = NetworkTemplate.buildTemplateMobileAll(subscriber);
for (NetworkPolicy policy : policies) {
if (policy.template.equals(template)) {
policy.limitBytes = NetworkPolicy.LIMIT_DISABLED;
policy.inferred = false;
policy.clearSnooze();
}
}
setNetworkPolicies(policies);
// Turn restrict background data off
setRestrictBackground(false);
if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_APPS_CONTROL)) {
// Remove app's "restrict background data" flag
for (int uid : getUidsWithPolicy(POLICY_REJECT_METERED_BACKGROUND)) {
setUidPolicy(uid, POLICY_NONE);
}
}
}
@Override
public boolean isUidNetworkingBlocked(int uid, boolean isNetworkMetered) {
final long startTime = mStatLogger.getTime();
enforceAnyPermissionOf(OBSERVE_NETWORK_POLICY, PERMISSION_MAINLINE_NETWORK_STACK);
final int uidRules;
final boolean isBackgroundRestricted;
synchronized (mUidRulesFirstLock) {
uidRules = mUidRules.get(uid, RULE_NONE);
isBackgroundRestricted = mRestrictBackground;
}
final boolean ret = isUidNetworkingBlockedInternal(uid, uidRules, isNetworkMetered,
isBackgroundRestricted, mLogger);
mStatLogger.logDurationStat(Stats.IS_UID_NETWORKING_BLOCKED, startTime);
return ret;
}
private static boolean isSystem(int uid) {
return uid < Process.FIRST_APPLICATION_UID;
}
static boolean isUidNetworkingBlockedInternal(int uid, int uidRules, boolean isNetworkMetered,
boolean isBackgroundRestricted, @Nullable NetworkPolicyLogger logger) {
final int reason;
// Networks are never blocked for system components
if (isSystem(uid)) {
reason = NTWK_ALLOWED_SYSTEM;
} else if (hasRule(uidRules, RULE_REJECT_RESTRICTED_MODE)) {
reason = NTWK_BLOCKED_RESTRICTED_MODE;
} else if (hasRule(uidRules, RULE_REJECT_ALL)) {
reason = NTWK_BLOCKED_POWER;
} else if (!isNetworkMetered) {
reason = NTWK_ALLOWED_NON_METERED;
} else if (hasRule(uidRules, RULE_REJECT_METERED)) {
reason = NTWK_BLOCKED_DENYLIST;
} else if (hasRule(uidRules, RULE_ALLOW_METERED)) {
reason = NTWK_ALLOWED_ALLOWLIST;
} else if (hasRule(uidRules, RULE_TEMPORARY_ALLOW_METERED)) {
reason = NTWK_ALLOWED_TMP_ALLOWLIST;
} else if (isBackgroundRestricted) {
reason = NTWK_BLOCKED_BG_RESTRICT;
} else {
reason = NTWK_ALLOWED_DEFAULT;
}
final boolean blocked;
switch(reason) {
case NTWK_ALLOWED_DEFAULT:
case NTWK_ALLOWED_NON_METERED:
case NTWK_ALLOWED_TMP_ALLOWLIST:
case NTWK_ALLOWED_ALLOWLIST:
case NTWK_ALLOWED_SYSTEM:
blocked = false;
break;
case NTWK_BLOCKED_RESTRICTED_MODE:
case NTWK_BLOCKED_POWER:
case NTWK_BLOCKED_DENYLIST:
case NTWK_BLOCKED_BG_RESTRICT:
blocked = true;
break;
default:
throw new IllegalArgumentException();
}
if (logger != null) {
logger.networkBlocked(uid, reason);
}
return blocked;
}
private class NetworkPolicyManagerInternalImpl extends NetworkPolicyManagerInternal {
@Override
public void resetUserState(int userId) {
synchronized (mUidRulesFirstLock) {
boolean changed = removeUserStateUL(userId, false, true);
changed = addDefaultRestrictBackgroundAllowlistUidsUL(userId) || changed;
if (changed) {
synchronized (mNetworkPoliciesSecondLock) {
writePolicyAL();
}
}
}
}
/**
* @return true if the given uid is restricted from doing networking on metered networks.
*/
@Override
public boolean isUidRestrictedOnMeteredNetworks(int uid) {
final int uidRules;
final boolean isBackgroundRestricted;
synchronized (mUidRulesFirstLock) {
uidRules = mUidRules.get(uid, RULE_ALLOW_ALL);
isBackgroundRestricted = mRestrictBackground;
}
return isBackgroundRestricted
&& !hasRule(uidRules, RULE_ALLOW_METERED)
&& !hasRule(uidRules, RULE_TEMPORARY_ALLOW_METERED);
}
@Override
public void onTempPowerSaveWhitelistChange(int appId, boolean added) {
synchronized (mUidRulesFirstLock) {
if (!mSystemReady) {
return;
}
mLogger.tempPowerSaveWlChanged(appId, added);
if (added) {
mPowerSaveTempWhitelistAppIds.put(appId, true);
} else {
mPowerSaveTempWhitelistAppIds.delete(appId);
}
updateRulesForTempWhitelistChangeUL(appId);
}
}
@Override
public SubscriptionPlan getSubscriptionPlan(Network network) {
synchronized (mNetworkPoliciesSecondLock) {
final int subId = getSubIdLocked(network);
return getPrimarySubscriptionPlanLocked(subId);
}
}
@Override
public SubscriptionPlan getSubscriptionPlan(NetworkTemplate template) {
synchronized (mNetworkPoliciesSecondLock) {
final int subId = findRelevantSubIdNL(template);
return getPrimarySubscriptionPlanLocked(subId);
}
}
@Override
public long getSubscriptionOpportunisticQuota(Network network, int quotaType) {
final long quotaBytes;
synchronized (mNetworkPoliciesSecondLock) {
quotaBytes = mSubscriptionOpportunisticQuota.get(getSubIdLocked(network),
OPPORTUNISTIC_QUOTA_UNKNOWN);
}
if (quotaBytes == OPPORTUNISTIC_QUOTA_UNKNOWN) {
return OPPORTUNISTIC_QUOTA_UNKNOWN;
}
if (quotaType == QUOTA_TYPE_JOBS) {
return (long) (quotaBytes * Settings.Global.getFloat(mContext.getContentResolver(),
NETPOLICY_QUOTA_FRAC_JOBS, QUOTA_FRAC_JOBS_DEFAULT));
} else if (quotaType == QUOTA_TYPE_MULTIPATH) {
return (long) (quotaBytes * Settings.Global.getFloat(mContext.getContentResolver(),
NETPOLICY_QUOTA_FRAC_MULTIPATH, QUOTA_FRAC_MULTIPATH_DEFAULT));
} else {
return OPPORTUNISTIC_QUOTA_UNKNOWN;
}
}
@Override
public void onAdminDataAvailable() {
mAdminDataAvailableLatch.countDown();
}
@Override
public void setAppIdleWhitelist(int uid, boolean shouldWhitelist) {
NetworkPolicyManagerService.this.setAppIdleWhitelist(uid, shouldWhitelist);
}
@Override
public void setMeteredRestrictedPackages(Set<String> packageNames, int userId) {
setMeteredRestrictedPackagesInternal(packageNames, userId);
}
@Override
public void setMeteredRestrictedPackagesAsync(Set<String> packageNames, int userId) {
mHandler.obtainMessage(MSG_METERED_RESTRICTED_PACKAGES_CHANGED,
userId, 0, packageNames).sendToTarget();
}
@Override
public void onStatsProviderLimitReached(@NonNull String tag) {
Log.v(TAG, "onStatsProviderLimitReached: " + tag);
mHandler.obtainMessage(MSG_STATS_PROVIDER_LIMIT_REACHED).sendToTarget();
}
}
private void setMeteredRestrictedPackagesInternal(Set<String> packageNames, int userId) {
synchronized (mUidRulesFirstLock) {
final Set<Integer> newRestrictedUids = new ArraySet<>();
for (String packageName : packageNames) {
final int uid = getUidForPackage(packageName, userId);
if (uid >= 0) {
newRestrictedUids.add(uid);
}
}
final Set<Integer> oldRestrictedUids = mMeteredRestrictedUids.get(userId);
mMeteredRestrictedUids.put(userId, newRestrictedUids);
handleRestrictedPackagesChangeUL(oldRestrictedUids, newRestrictedUids);
mLogger.meteredRestrictedPkgsChanged(newRestrictedUids);
}
}
private int getUidForPackage(String packageName, int userId) {
try {
return mContext.getPackageManager().getPackageUidAsUser(packageName,
PackageManager.MATCH_KNOWN_PACKAGES, userId);
} catch (NameNotFoundException e) {
return -1;
}
}
private int parseSubId(NetworkState state) {
int subId = INVALID_SUBSCRIPTION_ID;
if (state != null && state.networkCapabilities != null
&& state.networkCapabilities.hasTransport(TRANSPORT_CELLULAR)) {
NetworkSpecifier spec = state.networkCapabilities.getNetworkSpecifier();
if (spec instanceof TelephonyNetworkSpecifier) {
subId = ((TelephonyNetworkSpecifier) spec).getSubscriptionId();
}
}
return subId;
}
@GuardedBy("mNetworkPoliciesSecondLock")
private int getSubIdLocked(Network network) {
return mNetIdToSubId.get(network.netId, INVALID_SUBSCRIPTION_ID);
}
@GuardedBy("mNetworkPoliciesSecondLock")
private SubscriptionPlan getPrimarySubscriptionPlanLocked(int subId) {
final SubscriptionPlan[] plans = mSubscriptionPlans.get(subId);
if (!ArrayUtils.isEmpty(plans)) {
for (SubscriptionPlan plan : plans) {
if (plan.getCycleRule().isRecurring()) {
// Recurring plans will always have an active cycle
return plan;
} else {
// Non-recurring plans need manual test for active cycle
final Range<ZonedDateTime> cycle = plan.cycleIterator().next();
if (cycle.contains(ZonedDateTime.now(mClock))) {
return plan;
}
}
}
}
return null;
}
/**
* This will only ever be called once - during device boot.
*/
private void waitForAdminData() {
if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN)) {
ConcurrentUtils.waitForCountDownNoInterrupt(mAdminDataAvailableLatch,
WAIT_FOR_ADMIN_DATA_TIMEOUT_MS, "Wait for admin data");
}
}
private void handleRestrictedPackagesChangeUL(Set<Integer> oldRestrictedUids,
Set<Integer> newRestrictedUids) {
if (!mNetworkManagerReady) {
return;
}
if (oldRestrictedUids == null) {
for (int uid : newRestrictedUids) {
updateRulesForDataUsageRestrictionsUL(uid);
}
return;
}
for (int uid : oldRestrictedUids) {
if (!newRestrictedUids.contains(uid)) {
updateRulesForDataUsageRestrictionsUL(uid);
}
}
for (int uid : newRestrictedUids) {
if (!oldRestrictedUids.contains(uid)) {
updateRulesForDataUsageRestrictionsUL(uid);
}
}
}
@GuardedBy("mUidRulesFirstLock")
private boolean isRestrictedByAdminUL(int uid) {
final Set<Integer> restrictedUids = mMeteredRestrictedUids.get(
UserHandle.getUserId(uid));
return restrictedUids != null && restrictedUids.contains(uid);
}
private static boolean hasRule(int uidRules, int rule) {
return (uidRules & rule) != 0;
}
private static @NonNull NetworkState[] defeatNullable(@Nullable NetworkState[] val) {
return (val != null) ? val : new NetworkState[0];
}
private static boolean getBooleanDefeatingNullable(@Nullable PersistableBundle bundle,
String key, boolean defaultValue) {
return (bundle != null) ? bundle.getBoolean(key, defaultValue) : defaultValue;
}
private class NotificationId {
private final String mTag;
private final int mId;
NotificationId(NetworkPolicy policy, int type) {
mTag = buildNotificationTag(policy, type);
mId = type;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof NotificationId)) return false;
NotificationId that = (NotificationId) o;
return Objects.equals(mTag, that.mTag);
}
@Override
public int hashCode() {
return Objects.hash(mTag);
}
/**
* Build unique tag that identifies an active {@link NetworkPolicy}
* notification of a specific type, like {@link #TYPE_LIMIT}.
*/
private String buildNotificationTag(NetworkPolicy policy, int type) {
return TAG + ":" + policy.template.hashCode() + ":" + type;
}
public String getTag() {
return mTag;
}
public int getId() {
return mId;
}
}
}