ConnectivityService.java revision a11b5e34f50899a48531bb84ba3f6d796a64985e 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.server;
18
19import static android.Manifest.permission.MANAGE_NETWORK_POLICY;
20import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE;
21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION;
22import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE;
23import static android.net.ConnectivityManager.TYPE_BLUETOOTH;
24import static android.net.ConnectivityManager.TYPE_DUMMY;
25import static android.net.ConnectivityManager.TYPE_MOBILE;
26import static android.net.ConnectivityManager.TYPE_MOBILE_MMS;
27import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL;
28import static android.net.ConnectivityManager.TYPE_MOBILE_DUN;
29import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA;
30import static android.net.ConnectivityManager.TYPE_MOBILE_IMS;
31import static android.net.ConnectivityManager.TYPE_MOBILE_CBS;
32import static android.net.ConnectivityManager.TYPE_MOBILE_IA;
33import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI;
34import static android.net.ConnectivityManager.TYPE_NONE;
35import static android.net.ConnectivityManager.TYPE_WIFI;
36import static android.net.ConnectivityManager.TYPE_WIMAX;
37import static android.net.ConnectivityManager.TYPE_PROXY;
38import static android.net.ConnectivityManager.getNetworkTypeName;
39import static android.net.ConnectivityManager.isNetworkTypeValid;
40import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL;
41import static android.net.NetworkPolicyManager.RULE_REJECT_METERED;
42
43import android.app.AlarmManager;
44import android.app.Notification;
45import android.app.NotificationManager;
46import android.app.PendingIntent;
47import android.content.ActivityNotFoundException;
48import android.content.BroadcastReceiver;
49import android.content.ContentResolver;
50import android.content.Context;
51import android.content.ContextWrapper;
52import android.content.Intent;
53import android.content.IntentFilter;
54import android.content.pm.PackageManager;
55import android.content.res.Configuration;
56import android.content.res.Resources;
57import android.database.ContentObserver;
58import android.net.ConnectivityManager;
59import android.net.IConnectivityManager;
60import android.net.INetworkManagementEventObserver;
61import android.net.INetworkPolicyListener;
62import android.net.INetworkPolicyManager;
63import android.net.INetworkStatsService;
64import android.net.LinkAddress;
65import android.net.LinkProperties;
66import android.net.LinkProperties.CompareResult;
67import android.net.LinkQualityInfo;
68import android.net.MobileDataStateTracker;
69import android.net.Network;
70import android.net.NetworkAgent;
71import android.net.NetworkCapabilities;
72import android.net.NetworkConfig;
73import android.net.NetworkInfo;
74import android.net.NetworkInfo.DetailedState;
75import android.net.NetworkFactory;
76import android.net.NetworkMisc;
77import android.net.NetworkQuotaInfo;
78import android.net.NetworkRequest;
79import android.net.NetworkState;
80import android.net.NetworkStateTracker;
81import android.net.NetworkUtils;
82import android.net.Proxy;
83import android.net.ProxyDataTracker;
84import android.net.ProxyInfo;
85import android.net.RouteInfo;
86import android.net.SamplingDataTracker;
87import android.net.UidRange;
88import android.net.Uri;
89import android.net.wimax.WimaxManagerConstants;
90import android.os.AsyncTask;
91import android.os.Binder;
92import android.os.Build;
93import android.os.FileUtils;
94import android.os.Handler;
95import android.os.HandlerThread;
96import android.os.IBinder;
97import android.os.INetworkManagementService;
98import android.os.Looper;
99import android.os.Message;
100import android.os.Messenger;
101import android.os.ParcelFileDescriptor;
102import android.os.PowerManager;
103import android.os.Process;
104import android.os.RemoteException;
105import android.os.ServiceManager;
106import android.os.SystemClock;
107import android.os.SystemProperties;
108import android.os.UserHandle;
109import android.os.UserManager;
110import android.provider.Settings;
111import android.security.Credentials;
112import android.security.KeyStore;
113import android.telephony.TelephonyManager;
114import android.text.TextUtils;
115import android.util.Slog;
116import android.util.SparseArray;
117import android.util.SparseIntArray;
118import android.util.Xml;
119
120import com.android.internal.R;
121import com.android.internal.annotations.GuardedBy;
122import com.android.internal.app.IBatteryStats;
123import com.android.internal.net.LegacyVpnInfo;
124import com.android.internal.net.NetworkStatsFactory;
125import com.android.internal.net.VpnConfig;
126import com.android.internal.net.VpnProfile;
127import com.android.internal.telephony.DctConstants;
128import com.android.internal.telephony.Phone;
129import com.android.internal.telephony.PhoneConstants;
130import com.android.internal.telephony.TelephonyIntents;
131import com.android.internal.util.AsyncChannel;
132import com.android.internal.util.IndentingPrintWriter;
133import com.android.internal.util.XmlUtils;
134import com.android.server.am.BatteryStatsService;
135import com.android.server.connectivity.DataConnectionStats;
136import com.android.server.connectivity.Nat464Xlat;
137import com.android.server.connectivity.NetworkAgentInfo;
138import com.android.server.connectivity.NetworkMonitor;
139import com.android.server.connectivity.PacManager;
140import com.android.server.connectivity.PermissionMonitor;
141import com.android.server.connectivity.Tethering;
142import com.android.server.connectivity.Vpn;
143import com.android.server.net.BaseNetworkObserver;
144import com.android.server.net.LockdownVpnTracker;
145import com.google.android.collect.Lists;
146import com.google.android.collect.Sets;
147
148import dalvik.system.DexClassLoader;
149
150import org.xmlpull.v1.XmlPullParser;
151import org.xmlpull.v1.XmlPullParserException;
152
153import java.io.File;
154import java.io.FileDescriptor;
155import java.io.FileNotFoundException;
156import java.io.FileReader;
157import java.io.IOException;
158import java.io.PrintWriter;
159import java.lang.reflect.Constructor;
160import java.net.HttpURLConnection;
161import java.net.Inet4Address;
162import java.net.Inet6Address;
163import java.net.InetAddress;
164import java.net.URL;
165import java.net.UnknownHostException;
166import java.util.ArrayList;
167import java.util.Arrays;
168import java.util.Collection;
169import java.util.GregorianCalendar;
170import java.util.HashMap;
171import java.util.HashSet;
172import java.util.List;
173import java.util.Map;
174import java.util.Random;
175import java.util.concurrent.atomic.AtomicBoolean;
176import java.util.concurrent.atomic.AtomicInteger;
177
178import javax.net.ssl.HostnameVerifier;
179import javax.net.ssl.HttpsURLConnection;
180import javax.net.ssl.SSLSession;
181
182/**
183 * @hide
184 */
185public class ConnectivityService extends IConnectivityManager.Stub {
186    private static final String TAG = "ConnectivityService";
187
188    private static final boolean DBG = true;
189    private static final boolean VDBG = false;
190
191    // network sampling debugging
192    private static final boolean SAMPLE_DBG = false;
193
194    private static final boolean LOGD_RULES = false;
195
196    // TODO: create better separation between radio types and network types
197
198    // how long to wait before switching back to a radio's default network
199    private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000;
200    // system property that can override the above value
201    private static final String NETWORK_RESTORE_DELAY_PROP_NAME =
202            "android.telephony.apn-restore";
203
204    // Default value if FAIL_FAST_TIME_MS is not set
205    private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000;
206    // system property that can override DEFAULT_FAIL_FAST_TIME_MS
207    private static final String FAIL_FAST_TIME_MS =
208            "persist.radio.fail_fast_time_ms";
209
210    private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED =
211            "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED";
212
213    private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0;
214
215    private PendingIntent mSampleIntervalElapsedIntent;
216
217    // Set network sampling interval at 12 minutes, this way, even if the timers get
218    // aggregated, it will fire at around 15 minutes, which should allow us to
219    // aggregate this timer with other timers (specially the socket keep alive timers)
220    private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60);
221
222    // start network sampling a minute after booting ...
223    private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60);
224
225    AlarmManager mAlarmManager;
226
227    private Tethering mTethering;
228
229    private final PermissionMonitor mPermissionMonitor;
230
231    private KeyStore mKeyStore;
232
233    @GuardedBy("mVpns")
234    private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>();
235
236    private boolean mLockdownEnabled;
237    private LockdownVpnTracker mLockdownTracker;
238
239    private Nat464Xlat mClat;
240
241    /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */
242    private Object mRulesLock = new Object();
243    /** Currently active network rules by UID. */
244    private SparseIntArray mUidRules = new SparseIntArray();
245    /** Set of ifaces that are costly. */
246    private HashSet<String> mMeteredIfaces = Sets.newHashSet();
247
248    /**
249     * Sometimes we want to refer to the individual network state
250     * trackers separately, and sometimes we just want to treat them
251     * abstractly.
252     */
253    private NetworkStateTracker mNetTrackers[];
254
255    private Context mContext;
256    private int mNetworkPreference;
257    private int mActiveDefaultNetwork = TYPE_NONE;
258    // 0 is full bad, 100 is full good
259    private int mDefaultInetConditionPublished = 0;
260
261    private Object mDnsLock = new Object();
262    private int mNumDnsEntries;
263
264    private boolean mTestMode;
265    private static ConnectivityService sServiceInstance;
266
267    private INetworkManagementService mNetd;
268    private INetworkPolicyManager mPolicyManager;
269
270    private String mCurrentTcpBufferSizes;
271
272    private static final int ENABLED  = 1;
273    private static final int DISABLED = 0;
274
275    /**
276     * used internally to change our mobile data enabled flag
277     */
278    private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2;
279
280    /**
281     * used internally to clear a wakelock when transitioning
282     * from one net to another.  Clear happens when we get a new
283     * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens
284     * after a timeout if no network is found (typically 1 min).
285     */
286    private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8;
287
288    /**
289     * used internally to reload global proxy settings
290     */
291    private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9;
292
293    /**
294     * used internally to set external dependency met/unmet
295     * arg1 = ENABLED (met) or DISABLED (unmet)
296     * arg2 = NetworkType
297     */
298    private static final int EVENT_SET_DEPENDENCY_MET = 10;
299
300    /**
301     * used internally to send a sticky broadcast delayed.
302     */
303    private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11;
304
305    /**
306     * Used internally to
307     * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}.
308     */
309    private static final int EVENT_SET_POLICY_DATA_ENABLE = 12;
310
311    /**
312     * Used internally to disable fail fast of mobile data
313     */
314    private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14;
315
316    /**
317     * used internally to indicate that data sampling interval is up
318     */
319    private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15;
320
321    /**
322     * PAC manager has received new port.
323     */
324    private static final int EVENT_PROXY_HAS_CHANGED = 16;
325
326    /**
327     * used internally when registering NetworkFactories
328     * obj = NetworkFactoryInfo
329     */
330    private static final int EVENT_REGISTER_NETWORK_FACTORY = 17;
331
332    /**
333     * used internally when registering NetworkAgents
334     * obj = Messenger
335     */
336    private static final int EVENT_REGISTER_NETWORK_AGENT = 18;
337
338    /**
339     * used to add a network request
340     * includes a NetworkRequestInfo
341     */
342    private static final int EVENT_REGISTER_NETWORK_REQUEST = 19;
343
344    /**
345     * indicates a timeout period is over - check if we had a network yet or not
346     * and if not, call the timeout calback (but leave the request live until they
347     * cancel it.
348     * includes a NetworkRequestInfo
349     */
350    private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20;
351
352    /**
353     * used to add a network listener - no request
354     * includes a NetworkRequestInfo
355     */
356    private static final int EVENT_REGISTER_NETWORK_LISTENER = 21;
357
358    /**
359     * used to remove a network request, either a listener or a real request
360     * arg1 = UID of caller
361     * obj  = NetworkRequest
362     */
363    private static final int EVENT_RELEASE_NETWORK_REQUEST = 22;
364
365    /**
366     * used internally when registering NetworkFactories
367     * obj = Messenger
368     */
369    private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23;
370
371    /**
372     * used internally to expire a wakelock when transitioning
373     * from one net to another.  Expire happens when we fail to find
374     * a new network (typically after 1 minute) -
375     * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found
376     * a replacement network.
377     */
378    private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24;
379
380    /**
381     * Used internally to indicate the system is ready.
382     */
383    private static final int EVENT_SYSTEM_READY = 25;
384
385
386    /** Handler used for internal events. */
387    final private InternalHandler mHandler;
388    /** Handler used for incoming {@link NetworkStateTracker} events. */
389    final private NetworkStateTrackerHandler mTrackerHandler;
390
391    private boolean mSystemReady;
392    private Intent mInitialBroadcast;
393
394    private PowerManager.WakeLock mNetTransitionWakeLock;
395    private String mNetTransitionWakeLockCausedBy = "";
396    private int mNetTransitionWakeLockSerialNumber;
397    private int mNetTransitionWakeLockTimeout;
398
399    private InetAddress mDefaultDns;
400
401    // used in DBG mode to track inet condition reports
402    private static final int INET_CONDITION_LOG_MAX_SIZE = 15;
403    private ArrayList mInetLog;
404
405    // track the current default http proxy - tell the world if we get a new one (real change)
406    private volatile ProxyInfo mDefaultProxy = null;
407    private Object mProxyLock = new Object();
408    private boolean mDefaultProxyDisabled = false;
409
410    // track the global proxy.
411    private ProxyInfo mGlobalProxy = null;
412
413    private PacManager mPacManager = null;
414
415    private SettingsObserver mSettingsObserver;
416
417    private UserManager mUserManager;
418
419    NetworkConfig[] mNetConfigs;
420    int mNetworksDefined;
421
422    // the set of network types that can only be enabled by system/sig apps
423    List mProtectedNetworks;
424
425    private DataConnectionStats mDataConnectionStats;
426
427    private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0);
428
429    TelephonyManager mTelephonyManager;
430
431    // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp
432    private final static int MIN_NET_ID = 100; // some reserved marks
433    private final static int MAX_NET_ID = 65535;
434    private int mNextNetId = MIN_NET_ID;
435
436    // sequence number of NetworkRequests
437    private int mNextNetworkRequestId = 1;
438
439    /**
440     * Implements support for the legacy "one network per network type" model.
441     *
442     * We used to have a static array of NetworkStateTrackers, one for each
443     * network type, but that doesn't work any more now that we can have,
444     * for example, more that one wifi network. This class stores all the
445     * NetworkAgentInfo objects that support a given type, but the legacy
446     * API will only see the first one.
447     *
448     * It serves two main purposes:
449     *
450     * 1. Provide information about "the network for a given type" (since this
451     *    API only supports one).
452     * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if
453     *    the first network for a given type changes, or if the default network
454     *    changes.
455     */
456    private class LegacyTypeTracker {
457
458        private static final boolean DBG = true;
459        private static final boolean VDBG = false;
460        private static final String TAG = "CSLegacyTypeTracker";
461
462        /**
463         * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS).
464         * Each list holds references to all NetworkAgentInfos that are used to
465         * satisfy requests for that network type.
466         *
467         * This array is built out at startup such that an unsupported network
468         * doesn't get an ArrayList instance, making this a tristate:
469         * unsupported, supported but not active and active.
470         *
471         * The actual lists are populated when we scan the network types that
472         * are supported on this device.
473         */
474        private ArrayList<NetworkAgentInfo> mTypeLists[];
475
476        public LegacyTypeTracker() {
477            mTypeLists = (ArrayList<NetworkAgentInfo>[])
478                    new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1];
479        }
480
481        public void addSupportedType(int type) {
482            if (mTypeLists[type] != null) {
483                throw new IllegalStateException(
484                        "legacy list for type " + type + "already initialized");
485            }
486            mTypeLists[type] = new ArrayList<NetworkAgentInfo>();
487        }
488
489        public boolean isTypeSupported(int type) {
490            return isNetworkTypeValid(type) && mTypeLists[type] != null;
491        }
492
493        public NetworkAgentInfo getNetworkForType(int type) {
494            if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) {
495                return mTypeLists[type].get(0);
496            } else {
497                return null;
498            }
499        }
500
501        private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) {
502            if (DBG) {
503                log("Sending " + (connected ? "connected" : "disconnected") +
504                        " broadcast for type " + type + " " + nai.name() +
505                        " isDefaultNetwork=" + isDefaultNetwork(nai));
506            }
507        }
508
509        /** Adds the given network to the specified legacy type list. */
510        public void add(int type, NetworkAgentInfo nai) {
511            if (!isTypeSupported(type)) {
512                return;  // Invalid network type.
513            }
514            if (VDBG) log("Adding agent " + nai + " for legacy network type " + type);
515
516            ArrayList<NetworkAgentInfo> list = mTypeLists[type];
517            if (list.contains(nai)) {
518                loge("Attempting to register duplicate agent for type " + type + ": " + nai);
519                return;
520            }
521
522            list.add(nai);
523
524            // Send a broadcast if this is the first network of its type or if it's the default.
525            if (list.size() == 1 || isDefaultNetwork(nai)) {
526                maybeLogBroadcast(nai, true, type);
527                sendLegacyNetworkBroadcast(nai, true, type);
528            }
529        }
530
531        /** Removes the given network from the specified legacy type list. */
532        public void remove(int type, NetworkAgentInfo nai) {
533            ArrayList<NetworkAgentInfo> list = mTypeLists[type];
534            if (list == null || list.isEmpty()) {
535                return;
536            }
537
538            boolean wasFirstNetwork = list.get(0).equals(nai);
539
540            if (!list.remove(nai)) {
541                return;
542            }
543
544            if (wasFirstNetwork || isDefaultNetwork(nai)) {
545                maybeLogBroadcast(nai, false, type);
546                sendLegacyNetworkBroadcast(nai, false, type);
547            }
548
549            if (!list.isEmpty() && wasFirstNetwork) {
550                if (DBG) log("Other network available for type " + type +
551                              ", sending connected broadcast");
552                maybeLogBroadcast(list.get(0), false, type);
553                sendLegacyNetworkBroadcast(list.get(0), false, type);
554            }
555        }
556
557        /** Removes the given network from all legacy type lists. */
558        public void remove(NetworkAgentInfo nai) {
559            if (VDBG) log("Removing agent " + nai);
560            for (int type = 0; type < mTypeLists.length; type++) {
561                remove(type, nai);
562            }
563        }
564
565        private String naiToString(NetworkAgentInfo nai) {
566            String name = (nai != null) ? nai.name() : "null";
567            String state = (nai.networkInfo != null) ?
568                    nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() :
569                    "???/???";
570            return name + " " + state;
571        }
572
573        public void dump(IndentingPrintWriter pw) {
574            for (int type = 0; type < mTypeLists.length; type++) {
575                if (mTypeLists[type] == null) continue;
576                pw.print(type + " ");
577                pw.increaseIndent();
578                if (mTypeLists[type].size() == 0) pw.println("none");
579                for (NetworkAgentInfo nai : mTypeLists[type]) {
580                    pw.println(naiToString(nai));
581                }
582                pw.decreaseIndent();
583            }
584        }
585
586        // This class needs its own log method because it has a different TAG.
587        private void log(String s) {
588            Slog.d(TAG, s);
589        }
590
591    }
592    private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker();
593
594    public ConnectivityService(Context context, INetworkManagementService netManager,
595            INetworkStatsService statsService, INetworkPolicyManager policyManager) {
596        if (DBG) log("ConnectivityService starting up");
597
598        NetworkCapabilities netCap = new NetworkCapabilities();
599        netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
600        netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED);
601        mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId());
602        NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(),
603                NetworkRequestInfo.REQUEST);
604        mNetworkRequests.put(mDefaultRequest, nri);
605
606        HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread");
607        handlerThread.start();
608        mHandler = new InternalHandler(handlerThread.getLooper());
609        mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper());
610
611        // setup our unique device name
612        if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) {
613            String id = Settings.Secure.getString(context.getContentResolver(),
614                    Settings.Secure.ANDROID_ID);
615            if (id != null && id.length() > 0) {
616                String name = new String("android-").concat(id);
617                SystemProperties.set("net.hostname", name);
618            }
619        }
620
621        // read our default dns server ip
622        String dns = Settings.Global.getString(context.getContentResolver(),
623                Settings.Global.DEFAULT_DNS_SERVER);
624        if (dns == null || dns.length() == 0) {
625            dns = context.getResources().getString(
626                    com.android.internal.R.string.config_default_dns_server);
627        }
628        try {
629            mDefaultDns = NetworkUtils.numericToInetAddress(dns);
630        } catch (IllegalArgumentException e) {
631            loge("Error setting defaultDns using " + dns);
632        }
633
634        mContext = checkNotNull(context, "missing Context");
635        mNetd = checkNotNull(netManager, "missing INetworkManagementService");
636        mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager");
637        mKeyStore = KeyStore.getInstance();
638        mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);
639
640        try {
641            mPolicyManager.registerListener(mPolicyListener);
642        } catch (RemoteException e) {
643            // ouch, no rules updates means some processes may never get network
644            loge("unable to register INetworkPolicyListener" + e.toString());
645        }
646
647        final PowerManager powerManager = (PowerManager) context.getSystemService(
648                Context.POWER_SERVICE);
649        mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
650        mNetTransitionWakeLockTimeout = mContext.getResources().getInteger(
651                com.android.internal.R.integer.config_networkTransitionTimeout);
652
653        mNetTrackers = new NetworkStateTracker[
654                ConnectivityManager.MAX_NETWORK_TYPE+1];
655
656        mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1];
657
658        // TODO: What is the "correct" way to do determine if this is a wifi only device?
659        boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false);
660        log("wifiOnly=" + wifiOnly);
661        String[] naStrings = context.getResources().getStringArray(
662                com.android.internal.R.array.networkAttributes);
663        for (String naString : naStrings) {
664            try {
665                NetworkConfig n = new NetworkConfig(naString);
666                if (VDBG) log("naString=" + naString + " config=" + n);
667                if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) {
668                    loge("Error in networkAttributes - ignoring attempt to define type " +
669                            n.type);
670                    continue;
671                }
672                if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) {
673                    log("networkAttributes - ignoring mobile as this dev is wifiOnly " +
674                            n.type);
675                    continue;
676                }
677                if (mNetConfigs[n.type] != null) {
678                    loge("Error in networkAttributes - ignoring attempt to redefine type " +
679                            n.type);
680                    continue;
681                }
682                mLegacyTypeTracker.addSupportedType(n.type);
683
684                mNetConfigs[n.type] = n;
685                mNetworksDefined++;
686            } catch(Exception e) {
687                // ignore it - leave the entry null
688            }
689        }
690        if (VDBG) log("mNetworksDefined=" + mNetworksDefined);
691
692        mProtectedNetworks = new ArrayList<Integer>();
693        int[] protectedNetworks = context.getResources().getIntArray(
694                com.android.internal.R.array.config_protectedNetworks);
695        for (int p : protectedNetworks) {
696            if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) {
697                mProtectedNetworks.add(p);
698            } else {
699                if (DBG) loge("Ignoring protectedNetwork " + p);
700            }
701        }
702
703        mTestMode = SystemProperties.get("cm.test.mode").equals("true")
704                && SystemProperties.get("ro.build.type").equals("eng");
705
706        mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper());
707
708        mPermissionMonitor = new PermissionMonitor(mContext, mNetd);
709
710        //set up the listener for user state for creating user VPNs
711        IntentFilter intentFilter = new IntentFilter();
712        intentFilter.addAction(Intent.ACTION_USER_STARTING);
713        intentFilter.addAction(Intent.ACTION_USER_STOPPING);
714        mContext.registerReceiverAsUser(
715                mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null);
716        mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler);
717
718        try {
719            mNetd.registerObserver(mTethering);
720            mNetd.registerObserver(mDataActivityObserver);
721            mNetd.registerObserver(mClat);
722        } catch (RemoteException e) {
723            loge("Error registering observer :" + e);
724        }
725
726        if (DBG) {
727            mInetLog = new ArrayList();
728        }
729
730        mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY);
731        mSettingsObserver.observe(mContext);
732
733        mDataConnectionStats = new DataConnectionStats(mContext);
734        mDataConnectionStats.startMonitoring();
735
736        mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
737
738        IntentFilter filter = new IntentFilter();
739        filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED);
740        mContext.registerReceiver(
741                new BroadcastReceiver() {
742                    @Override
743                    public void onReceive(Context context, Intent intent) {
744                        String action = intent.getAction();
745                        if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) {
746                            mHandler.sendMessage(mHandler.obtainMessage
747                                    (EVENT_SAMPLE_INTERVAL_ELAPSED));
748                        }
749                    }
750                },
751                new IntentFilter(filter));
752
753        mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED);
754
755        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
756    }
757
758    private synchronized int nextNetworkRequestId() {
759        return mNextNetworkRequestId++;
760    }
761
762    private void assignNextNetId(NetworkAgentInfo nai) {
763        synchronized (mNetworkForNetId) {
764            for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) {
765                int netId = mNextNetId;
766                if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID;
767                // Make sure NetID unused.  http://b/16815182
768                if (mNetworkForNetId.get(netId) == null) {
769                    nai.network = new Network(netId);
770                    mNetworkForNetId.put(netId, nai);
771                    return;
772                }
773            }
774        }
775        throw new IllegalStateException("No free netIds");
776    }
777
778    private int getConnectivityChangeDelay() {
779        final ContentResolver cr = mContext.getContentResolver();
780
781        /** Check system properties for the default value then use secure settings value, if any. */
782        int defaultDelay = SystemProperties.getInt(
783                "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY,
784                ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT);
785        return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY,
786                defaultDelay);
787    }
788
789    private boolean teardown(NetworkStateTracker netTracker) {
790        if (netTracker.teardown()) {
791            netTracker.setTeardownRequested(true);
792            return true;
793        } else {
794            return false;
795        }
796    }
797
798    /**
799     * Check if UID should be blocked from using the network represented by the given networkType.
800     * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type.
801     */
802    private boolean isNetworkBlocked(int networkType, int uid) {
803        return isNetworkWithLinkPropertiesBlocked(getLinkPropertiesForType(networkType), uid);
804    }
805
806    /**
807     * Check if UID should be blocked from using the network represented by the given
808     * NetworkAgentInfo.
809     */
810    private boolean isNetworkBlocked(NetworkAgentInfo nai, int uid) {
811        return isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid);
812    }
813
814    /**
815     * Check if UID should be blocked from using the network with the given LinkProperties.
816     */
817    private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) {
818        final boolean networkCostly;
819        final int uidRules;
820
821        final String iface = (lp == null ? "" : lp.getInterfaceName());
822        synchronized (mRulesLock) {
823            networkCostly = mMeteredIfaces.contains(iface);
824            uidRules = mUidRules.get(uid, RULE_ALLOW_ALL);
825        }
826
827        if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) {
828            return true;
829        }
830
831        // no restrictive rules; network is visible
832        return false;
833    }
834
835    /**
836     * Return a filtered {@link NetworkInfo}, potentially marked
837     * {@link DetailedState#BLOCKED} based on
838     * {@link #isNetworkBlocked}.
839     * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type.
840     */
841    private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) {
842        NetworkInfo info = getNetworkInfoForType(networkType);
843        return getFilteredNetworkInfo(info, networkType, uid);
844    }
845
846    /*
847     * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type.
848     */
849    private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, int networkType, int uid) {
850        if (isNetworkBlocked(networkType, uid)) {
851            // network is blocked; clone and override state
852            info = new NetworkInfo(info);
853            info.setDetailedState(DetailedState.BLOCKED, null, null);
854            if (VDBG) log("returning Blocked NetworkInfo");
855        }
856        if (mLockdownTracker != null) {
857            info = mLockdownTracker.augmentNetworkInfo(info);
858            if (VDBG) log("returning Locked NetworkInfo");
859        }
860        return info;
861    }
862
863    private NetworkInfo getFilteredNetworkInfo(NetworkAgentInfo nai, int uid) {
864        NetworkInfo info = nai.networkInfo;
865        if (isNetworkBlocked(nai, uid)) {
866            // network is blocked; clone and override state
867            info = new NetworkInfo(info);
868            info.setDetailedState(DetailedState.BLOCKED, null, null);
869            if (DBG) log("returning Blocked NetworkInfo");
870        }
871        if (mLockdownTracker != null) {
872            info = mLockdownTracker.augmentNetworkInfo(info);
873            if (DBG) log("returning Locked NetworkInfo");
874        }
875        return info;
876    }
877
878    /**
879     * Return NetworkInfo for the active (i.e., connected) network interface.
880     * It is assumed that at most one network is active at a time. If more
881     * than one is active, it is indeterminate which will be returned.
882     * @return the info for the active network, or {@code null} if none is
883     * active
884     */
885    @Override
886    public NetworkInfo getActiveNetworkInfo() {
887        enforceAccessPermission();
888        final int uid = Binder.getCallingUid();
889        return getNetworkInfo(mActiveDefaultNetwork, uid);
890    }
891
892    /**
893     * Find the first Provisioning network.
894     *
895     * @return NetworkInfo or null if none.
896     */
897    private NetworkInfo getProvisioningNetworkInfo() {
898        enforceAccessPermission();
899
900        // Find the first Provisioning Network
901        NetworkInfo provNi = null;
902        for (NetworkInfo ni : getAllNetworkInfo()) {
903            if (ni.isConnectedToProvisioningNetwork()) {
904                provNi = ni;
905                break;
906            }
907        }
908        if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi);
909        return provNi;
910    }
911
912    /**
913     * Find the first Provisioning network or the ActiveDefaultNetwork
914     * if there is no Provisioning network
915     *
916     * @return NetworkInfo or null if none.
917     */
918    @Override
919    public NetworkInfo getProvisioningOrActiveNetworkInfo() {
920        enforceAccessPermission();
921
922        NetworkInfo provNi = getProvisioningNetworkInfo();
923        if (provNi == null) {
924            final int uid = Binder.getCallingUid();
925            provNi = getNetworkInfo(mActiveDefaultNetwork, uid);
926        }
927        if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi);
928        return provNi;
929    }
930
931    public NetworkInfo getActiveNetworkInfoUnfiltered() {
932        enforceAccessPermission();
933        if (isNetworkTypeValid(mActiveDefaultNetwork)) {
934            return getNetworkInfoForType(mActiveDefaultNetwork);
935        }
936        return null;
937    }
938
939    @Override
940    public NetworkInfo getActiveNetworkInfoForUid(int uid) {
941        enforceConnectivityInternalPermission();
942        return getNetworkInfo(mActiveDefaultNetwork, uid);
943    }
944
945    @Override
946    public NetworkInfo getNetworkInfo(int networkType) {
947        enforceAccessPermission();
948        final int uid = Binder.getCallingUid();
949        return getNetworkInfo(networkType, uid);
950    }
951
952    private NetworkInfo getNetworkInfo(int networkType, int uid) {
953        NetworkInfo info = null;
954        if (isNetworkTypeValid(networkType)) {
955            if (getNetworkInfoForType(networkType) != null) {
956                info = getFilteredNetworkInfo(networkType, uid);
957            }
958        }
959        return info;
960    }
961
962    @Override
963    public NetworkInfo getNetworkInfoForNetwork(Network network) {
964        enforceAccessPermission();
965        if (network == null) return null;
966
967        final int uid = Binder.getCallingUid();
968        NetworkAgentInfo nai = null;
969        synchronized (mNetworkForNetId) {
970            nai = mNetworkForNetId.get(network.netId);
971        }
972        if (nai == null) return null;
973        synchronized (nai) {
974            if (nai.networkInfo == null) return null;
975
976            return getFilteredNetworkInfo(nai, uid);
977        }
978    }
979
980    @Override
981    public NetworkInfo[] getAllNetworkInfo() {
982        enforceAccessPermission();
983        final int uid = Binder.getCallingUid();
984        final ArrayList<NetworkInfo> result = Lists.newArrayList();
985        for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE;
986                networkType++) {
987            if (getNetworkInfoForType(networkType) != null) {
988                result.add(getFilteredNetworkInfo(networkType, uid));
989            }
990        }
991        return result.toArray(new NetworkInfo[result.size()]);
992    }
993
994    @Override
995    public Network getNetworkForType(int networkType) {
996        enforceAccessPermission();
997        final int uid = Binder.getCallingUid();
998        if (isNetworkBlocked(networkType, uid)) {
999            return null;
1000        }
1001        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
1002        return (nai == null) ? null : nai.network;
1003    }
1004
1005    @Override
1006    public Network[] getAllNetworks() {
1007        enforceAccessPermission();
1008        final ArrayList<Network> result = new ArrayList();
1009        synchronized (mNetworkForNetId) {
1010            for (int i = 0; i < mNetworkForNetId.size(); i++) {
1011                result.add(new Network(mNetworkForNetId.valueAt(i).network));
1012            }
1013        }
1014        return result.toArray(new Network[result.size()]);
1015    }
1016
1017    @Override
1018    public boolean isNetworkSupported(int networkType) {
1019        enforceAccessPermission();
1020        return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null));
1021    }
1022
1023    /**
1024     * Return LinkProperties for the active (i.e., connected) default
1025     * network interface.  It is assumed that at most one default network
1026     * is active at a time. If more than one is active, it is indeterminate
1027     * which will be returned.
1028     * @return the ip properties for the active network, or {@code null} if
1029     * none is active
1030     */
1031    @Override
1032    public LinkProperties getActiveLinkProperties() {
1033        return getLinkPropertiesForType(mActiveDefaultNetwork);
1034    }
1035
1036    @Override
1037    public LinkProperties getLinkPropertiesForType(int networkType) {
1038        enforceAccessPermission();
1039        if (isNetworkTypeValid(networkType)) {
1040            return getLinkPropertiesForTypeInternal(networkType);
1041        }
1042        return null;
1043    }
1044
1045    // TODO - this should be ALL networks
1046    @Override
1047    public LinkProperties getLinkProperties(Network network) {
1048        enforceAccessPermission();
1049        NetworkAgentInfo nai = null;
1050        synchronized (mNetworkForNetId) {
1051            nai = mNetworkForNetId.get(network.netId);
1052        }
1053
1054        if (nai != null) {
1055            synchronized (nai) {
1056                return new LinkProperties(nai.linkProperties);
1057            }
1058        }
1059        return null;
1060    }
1061
1062    @Override
1063    public NetworkCapabilities getNetworkCapabilities(Network network) {
1064        enforceAccessPermission();
1065        NetworkAgentInfo nai = null;
1066        synchronized (mNetworkForNetId) {
1067            nai = mNetworkForNetId.get(network.netId);
1068        }
1069        if (nai != null) {
1070            synchronized (nai) {
1071                return new NetworkCapabilities(nai.networkCapabilities);
1072            }
1073        }
1074        return null;
1075    }
1076
1077    @Override
1078    public NetworkState[] getAllNetworkState() {
1079        enforceAccessPermission();
1080        final int uid = Binder.getCallingUid();
1081        final ArrayList<NetworkState> result = Lists.newArrayList();
1082        for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE;
1083                networkType++) {
1084            if (getNetworkInfoForType(networkType) != null) {
1085                final NetworkInfo info = getFilteredNetworkInfo(networkType, uid);
1086                final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType);
1087                final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType);
1088                result.add(new NetworkState(info, lp, netcap));
1089            }
1090        }
1091        return result.toArray(new NetworkState[result.size()]);
1092    }
1093
1094    private NetworkState getNetworkStateUnchecked(int networkType) {
1095        if (isNetworkTypeValid(networkType)) {
1096            NetworkInfo info = getNetworkInfoForType(networkType);
1097            if (info != null) {
1098                return new NetworkState(info,
1099                        getLinkPropertiesForTypeInternal(networkType),
1100                        getNetworkCapabilitiesForType(networkType));
1101            }
1102        }
1103        return null;
1104    }
1105
1106    @Override
1107    public NetworkQuotaInfo getActiveNetworkQuotaInfo() {
1108        enforceAccessPermission();
1109
1110        final long token = Binder.clearCallingIdentity();
1111        try {
1112            final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork);
1113            if (state != null) {
1114                try {
1115                    return mPolicyManager.getNetworkQuotaInfo(state);
1116                } catch (RemoteException e) {
1117                }
1118            }
1119            return null;
1120        } finally {
1121            Binder.restoreCallingIdentity(token);
1122        }
1123    }
1124
1125    @Override
1126    public boolean isActiveNetworkMetered() {
1127        enforceAccessPermission();
1128        final long token = Binder.clearCallingIdentity();
1129        try {
1130            return isNetworkMeteredUnchecked(mActiveDefaultNetwork);
1131        } finally {
1132            Binder.restoreCallingIdentity(token);
1133        }
1134    }
1135
1136    private boolean isNetworkMeteredUnchecked(int networkType) {
1137        final NetworkState state = getNetworkStateUnchecked(networkType);
1138        if (state != null) {
1139            try {
1140                return mPolicyManager.isNetworkMetered(state);
1141            } catch (RemoteException e) {
1142            }
1143        }
1144        return false;
1145    }
1146
1147    private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() {
1148        @Override
1149        public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) {
1150            int deviceType = Integer.parseInt(label);
1151            sendDataActivityBroadcast(deviceType, active, tsNanos);
1152        }
1153    };
1154
1155    /**
1156     * Ensure that a network route exists to deliver traffic to the specified
1157     * host via the specified network interface.
1158     * @param networkType the type of the network over which traffic to the
1159     * specified host is to be routed
1160     * @param hostAddress the IP address of the host to which the route is
1161     * desired
1162     * @return {@code true} on success, {@code false} on failure
1163     */
1164    public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) {
1165        enforceChangePermission();
1166        if (mProtectedNetworks.contains(networkType)) {
1167            enforceConnectivityInternalPermission();
1168        }
1169
1170        InetAddress addr;
1171        try {
1172            addr = InetAddress.getByAddress(hostAddress);
1173        } catch (UnknownHostException e) {
1174            if (DBG) log("requestRouteToHostAddress got " + e.toString());
1175            return false;
1176        }
1177
1178        if (!ConnectivityManager.isNetworkTypeValid(networkType)) {
1179            if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType);
1180            return false;
1181        }
1182
1183        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
1184        if (nai == null) {
1185            if (mLegacyTypeTracker.isTypeSupported(networkType) == false) {
1186                if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType);
1187            } else {
1188                if (DBG) log("requestRouteToHostAddress on down network: " + networkType);
1189            }
1190            return false;
1191        }
1192
1193        DetailedState netState;
1194        synchronized (nai) {
1195            netState = nai.networkInfo.getDetailedState();
1196        }
1197
1198        if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) {
1199            if (VDBG) {
1200                log("requestRouteToHostAddress on down network "
1201                        + "(" + networkType + ") - dropped"
1202                        + " netState=" + netState);
1203            }
1204            return false;
1205        }
1206
1207        final int uid = Binder.getCallingUid();
1208        final long token = Binder.clearCallingIdentity();
1209        try {
1210            LinkProperties lp;
1211            int netId;
1212            synchronized (nai) {
1213                lp = nai.linkProperties;
1214                netId = nai.network.netId;
1215            }
1216            boolean ok = addLegacyRouteToHost(lp, addr, netId, uid);
1217            if (DBG) log("requestRouteToHostAddress ok=" + ok);
1218            return ok;
1219        } finally {
1220            Binder.restoreCallingIdentity(token);
1221        }
1222    }
1223
1224    private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) {
1225        RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr);
1226        if (bestRoute == null) {
1227            bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName());
1228        } else {
1229            String iface = bestRoute.getInterface();
1230            if (bestRoute.getGateway().equals(addr)) {
1231                // if there is no better route, add the implied hostroute for our gateway
1232                bestRoute = RouteInfo.makeHostRoute(addr, iface);
1233            } else {
1234                // if we will connect to this through another route, add a direct route
1235                // to it's gateway
1236                bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface);
1237            }
1238        }
1239        if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface());
1240        try {
1241            mNetd.addLegacyRouteForNetId(netId, bestRoute, uid);
1242        } catch (Exception e) {
1243            // never crash - catch them all
1244            if (DBG) loge("Exception trying to add a route: " + e);
1245            return false;
1246        }
1247        return true;
1248    }
1249
1250    public void setDataDependency(int networkType, boolean met) {
1251        enforceConnectivityInternalPermission();
1252
1253        mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET,
1254                (met ? ENABLED : DISABLED), networkType));
1255    }
1256
1257    private void handleSetDependencyMet(int networkType, boolean met) {
1258        if (mNetTrackers[networkType] != null) {
1259            if (DBG) {
1260                log("handleSetDependencyMet(" + networkType + ", " + met + ")");
1261            }
1262            mNetTrackers[networkType].setDependencyMet(met);
1263        }
1264    }
1265
1266    private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() {
1267        @Override
1268        public void onUidRulesChanged(int uid, int uidRules) {
1269            // caller is NPMS, since we only register with them
1270            if (LOGD_RULES) {
1271                log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")");
1272            }
1273
1274            synchronized (mRulesLock) {
1275                // skip update when we've already applied rules
1276                final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL);
1277                if (oldRules == uidRules) return;
1278
1279                mUidRules.put(uid, uidRules);
1280            }
1281
1282            // TODO: notify UID when it has requested targeted updates
1283        }
1284
1285        @Override
1286        public void onMeteredIfacesChanged(String[] meteredIfaces) {
1287            // caller is NPMS, since we only register with them
1288            if (LOGD_RULES) {
1289                log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")");
1290            }
1291
1292            synchronized (mRulesLock) {
1293                mMeteredIfaces.clear();
1294                for (String iface : meteredIfaces) {
1295                    mMeteredIfaces.add(iface);
1296                }
1297            }
1298        }
1299
1300        @Override
1301        public void onRestrictBackgroundChanged(boolean restrictBackground) {
1302            // caller is NPMS, since we only register with them
1303            if (LOGD_RULES) {
1304                log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")");
1305            }
1306
1307            // kick off connectivity change broadcast for active network, since
1308            // global background policy change is radical.
1309            final int networkType = mActiveDefaultNetwork;
1310            if (isNetworkTypeValid(networkType)) {
1311                final NetworkStateTracker tracker = mNetTrackers[networkType];
1312                if (tracker != null) {
1313                    final NetworkInfo info = tracker.getNetworkInfo();
1314                    if (info != null && info.isConnected()) {
1315                        sendConnectedBroadcast(info);
1316                    }
1317                }
1318            }
1319        }
1320    };
1321
1322    @Override
1323    public void setPolicyDataEnable(int networkType, boolean enabled) {
1324        // only someone like NPMS should only be calling us
1325        mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
1326
1327        mHandler.sendMessage(mHandler.obtainMessage(
1328                EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED)));
1329    }
1330
1331    private void handleSetPolicyDataEnable(int networkType, boolean enabled) {
1332   // TODO - handle this passing to factories
1333//        if (isNetworkTypeValid(networkType)) {
1334//            final NetworkStateTracker tracker = mNetTrackers[networkType];
1335//            if (tracker != null) {
1336//                tracker.setPolicyDataEnable(enabled);
1337//            }
1338//        }
1339    }
1340
1341    private void enforceInternetPermission() {
1342        mContext.enforceCallingOrSelfPermission(
1343                android.Manifest.permission.INTERNET,
1344                "ConnectivityService");
1345    }
1346
1347    private void enforceAccessPermission() {
1348        mContext.enforceCallingOrSelfPermission(
1349                android.Manifest.permission.ACCESS_NETWORK_STATE,
1350                "ConnectivityService");
1351    }
1352
1353    private void enforceChangePermission() {
1354        mContext.enforceCallingOrSelfPermission(
1355                android.Manifest.permission.CHANGE_NETWORK_STATE,
1356                "ConnectivityService");
1357    }
1358
1359    private void enforceTetherAccessPermission() {
1360        mContext.enforceCallingOrSelfPermission(
1361                android.Manifest.permission.ACCESS_NETWORK_STATE,
1362                "ConnectivityService");
1363    }
1364
1365    private void enforceConnectivityInternalPermission() {
1366        mContext.enforceCallingOrSelfPermission(
1367                android.Manifest.permission.CONNECTIVITY_INTERNAL,
1368                "ConnectivityService");
1369    }
1370
1371    public void sendConnectedBroadcast(NetworkInfo info) {
1372        enforceConnectivityInternalPermission();
1373        sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE);
1374        sendGeneralBroadcast(info, CONNECTIVITY_ACTION);
1375    }
1376
1377    private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) {
1378        sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE);
1379        sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs);
1380    }
1381
1382    private void sendInetConditionBroadcast(NetworkInfo info) {
1383        sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION);
1384    }
1385
1386    private Intent makeGeneralIntent(NetworkInfo info, String bcastType) {
1387        if (mLockdownTracker != null) {
1388            info = mLockdownTracker.augmentNetworkInfo(info);
1389        }
1390
1391        Intent intent = new Intent(bcastType);
1392        intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info));
1393        intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType());
1394        if (info.isFailover()) {
1395            intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true);
1396            info.setFailover(false);
1397        }
1398        if (info.getReason() != null) {
1399            intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason());
1400        }
1401        if (info.getExtraInfo() != null) {
1402            intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO,
1403                    info.getExtraInfo());
1404        }
1405        intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished);
1406        return intent;
1407    }
1408
1409    private void sendGeneralBroadcast(NetworkInfo info, String bcastType) {
1410        sendStickyBroadcast(makeGeneralIntent(info, bcastType));
1411    }
1412
1413    private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) {
1414        sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs);
1415    }
1416
1417    private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) {
1418        Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE);
1419        intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType);
1420        intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active);
1421        intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos);
1422        final long ident = Binder.clearCallingIdentity();
1423        try {
1424            mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL,
1425                    RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null);
1426        } finally {
1427            Binder.restoreCallingIdentity(ident);
1428        }
1429    }
1430
1431    private void sendStickyBroadcast(Intent intent) {
1432        synchronized(this) {
1433            if (!mSystemReady) {
1434                mInitialBroadcast = new Intent(intent);
1435            }
1436            intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
1437            if (DBG) {
1438                log("sendStickyBroadcast: action=" + intent.getAction());
1439            }
1440
1441            final long ident = Binder.clearCallingIdentity();
1442            try {
1443                mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
1444            } finally {
1445                Binder.restoreCallingIdentity(ident);
1446            }
1447        }
1448    }
1449
1450    private void sendStickyBroadcastDelayed(Intent intent, int delayMs) {
1451        if (delayMs <= 0) {
1452            sendStickyBroadcast(intent);
1453        } else {
1454            if (VDBG) {
1455                log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action="
1456                        + intent.getAction());
1457            }
1458            mHandler.sendMessageDelayed(mHandler.obtainMessage(
1459                    EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs);
1460        }
1461    }
1462
1463    void systemReady() {
1464        // start network sampling ..
1465        Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED);
1466        intent.setPackage(mContext.getPackageName());
1467
1468        mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext,
1469                SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0);
1470        setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent);
1471
1472        loadGlobalProxy();
1473
1474        synchronized(this) {
1475            mSystemReady = true;
1476            if (mInitialBroadcast != null) {
1477                mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL);
1478                mInitialBroadcast = null;
1479            }
1480        }
1481        // load the global proxy at startup
1482        mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY));
1483
1484        // Try bringing up tracker, but if KeyStore isn't ready yet, wait
1485        // for user to unlock device.
1486        if (!updateLockdownVpn()) {
1487            final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT);
1488            mContext.registerReceiver(mUserPresentReceiver, filter);
1489        }
1490
1491        mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY));
1492
1493        mPermissionMonitor.startMonitoring();
1494    }
1495
1496    private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() {
1497        @Override
1498        public void onReceive(Context context, Intent intent) {
1499            // Try creating lockdown tracker, since user present usually means
1500            // unlocked keystore.
1501            if (updateLockdownVpn()) {
1502                mContext.unregisterReceiver(this);
1503            }
1504        }
1505    };
1506
1507    /** @hide */
1508    @Override
1509    public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) {
1510        enforceConnectivityInternalPermission();
1511        if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal);
1512//        mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal);
1513    }
1514
1515    /**
1516     * Setup data activity tracking for the given network.
1517     *
1518     * Every {@code setupDataActivityTracking} should be paired with a
1519     * {@link #removeDataActivityTracking} for cleanup.
1520     */
1521    private void setupDataActivityTracking(NetworkAgentInfo networkAgent) {
1522        final String iface = networkAgent.linkProperties.getInterfaceName();
1523
1524        final int timeout;
1525        int type = ConnectivityManager.TYPE_NONE;
1526
1527        if (networkAgent.networkCapabilities.hasTransport(
1528                NetworkCapabilities.TRANSPORT_CELLULAR)) {
1529            timeout = Settings.Global.getInt(mContext.getContentResolver(),
1530                                             Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE,
1531                                             5);
1532            type = ConnectivityManager.TYPE_MOBILE;
1533        } else if (networkAgent.networkCapabilities.hasTransport(
1534                NetworkCapabilities.TRANSPORT_WIFI)) {
1535            timeout = Settings.Global.getInt(mContext.getContentResolver(),
1536                                             Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI,
1537                                             0);
1538            type = ConnectivityManager.TYPE_WIFI;
1539        } else {
1540            // do not track any other networks
1541            timeout = 0;
1542        }
1543
1544        if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) {
1545            try {
1546                mNetd.addIdleTimer(iface, timeout, type);
1547            } catch (Exception e) {
1548                // You shall not crash!
1549                loge("Exception in setupDataActivityTracking " + e);
1550            }
1551        }
1552    }
1553
1554    /**
1555     * Remove data activity tracking when network disconnects.
1556     */
1557    private void removeDataActivityTracking(NetworkAgentInfo networkAgent) {
1558        final String iface = networkAgent.linkProperties.getInterfaceName();
1559        final NetworkCapabilities caps = networkAgent.networkCapabilities;
1560
1561        if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) ||
1562                              caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) {
1563            try {
1564                // the call fails silently if no idletimer setup for this interface
1565                mNetd.removeIdleTimer(iface);
1566            } catch (Exception e) {
1567                loge("Exception in removeDataActivityTracking " + e);
1568            }
1569        }
1570    }
1571
1572    /**
1573     * Reads the network specific MTU size from reources.
1574     * and set it on it's iface.
1575     */
1576    private void updateMtu(LinkProperties newLp, LinkProperties oldLp) {
1577        final String iface = newLp.getInterfaceName();
1578        final int mtu = newLp.getMtu();
1579        if (oldLp != null && newLp.isIdenticalMtu(oldLp)) {
1580            if (VDBG) log("identical MTU - not setting");
1581            return;
1582        }
1583
1584        if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) {
1585            loge("Unexpected mtu value: " + mtu + ", " + iface);
1586            return;
1587        }
1588
1589        // Cannot set MTU without interface name
1590        if (TextUtils.isEmpty(iface)) {
1591            loge("Setting MTU size with null iface.");
1592            return;
1593        }
1594
1595        try {
1596            if (DBG) log("Setting MTU size: " + iface + ", " + mtu);
1597            mNetd.setMtu(iface, mtu);
1598        } catch (Exception e) {
1599            Slog.e(TAG, "exception in setMtu()" + e);
1600        }
1601    }
1602
1603    private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208";
1604
1605    private void updateTcpBufferSizes(NetworkAgentInfo nai) {
1606        if (isDefaultNetwork(nai) == false) {
1607            return;
1608        }
1609
1610        String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes();
1611        String[] values = null;
1612        if (tcpBufferSizes != null) {
1613            values = tcpBufferSizes.split(",");
1614        }
1615
1616        if (values == null || values.length != 6) {
1617            if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults");
1618            tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES;
1619            values = tcpBufferSizes.split(",");
1620        }
1621
1622        if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return;
1623
1624        try {
1625            if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes);
1626
1627            final String prefix = "/sys/kernel/ipv4/tcp_";
1628            FileUtils.stringToFile(prefix + "rmem_min", values[0]);
1629            FileUtils.stringToFile(prefix + "rmem_def", values[1]);
1630            FileUtils.stringToFile(prefix + "rmem_max", values[2]);
1631            FileUtils.stringToFile(prefix + "wmem_min", values[3]);
1632            FileUtils.stringToFile(prefix + "wmem_def", values[4]);
1633            FileUtils.stringToFile(prefix + "wmem_max", values[5]);
1634            mCurrentTcpBufferSizes = tcpBufferSizes;
1635        } catch (IOException e) {
1636            loge("Can't set TCP buffer sizes:" + e);
1637        }
1638
1639        final String defaultRwndKey = "net.tcp.default_init_rwnd";
1640        int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0);
1641        Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(),
1642            Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue);
1643        final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd";
1644        if (rwndValue != 0) {
1645            SystemProperties.set(sysctlKey, rwndValue.toString());
1646        }
1647    }
1648
1649    private void flushVmDnsCache() {
1650        /*
1651         * Tell the VMs to toss their DNS caches
1652         */
1653        Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE);
1654        intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
1655        /*
1656         * Connectivity events can happen before boot has completed ...
1657         */
1658        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
1659        final long ident = Binder.clearCallingIdentity();
1660        try {
1661            mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
1662        } finally {
1663            Binder.restoreCallingIdentity(ident);
1664        }
1665    }
1666
1667    @Override
1668    public int getRestoreDefaultNetworkDelay(int networkType) {
1669        String restoreDefaultNetworkDelayStr = SystemProperties.get(
1670                NETWORK_RESTORE_DELAY_PROP_NAME);
1671        if(restoreDefaultNetworkDelayStr != null &&
1672                restoreDefaultNetworkDelayStr.length() != 0) {
1673            try {
1674                return Integer.valueOf(restoreDefaultNetworkDelayStr);
1675            } catch (NumberFormatException e) {
1676            }
1677        }
1678        // if the system property isn't set, use the value for the apn type
1679        int ret = RESTORE_DEFAULT_NETWORK_DELAY;
1680
1681        if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) &&
1682                (mNetConfigs[networkType] != null)) {
1683            ret = mNetConfigs[networkType].restoreTime;
1684        }
1685        return ret;
1686    }
1687
1688    @Override
1689    protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
1690        final IndentingPrintWriter pw = new IndentingPrintWriter(writer, "  ");
1691        if (mContext.checkCallingOrSelfPermission(
1692                android.Manifest.permission.DUMP)
1693                != PackageManager.PERMISSION_GRANTED) {
1694            pw.println("Permission Denial: can't dump ConnectivityService " +
1695                    "from from pid=" + Binder.getCallingPid() + ", uid=" +
1696                    Binder.getCallingUid());
1697            return;
1698        }
1699
1700        pw.println("NetworkFactories for:");
1701        pw.increaseIndent();
1702        for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
1703            pw.println(nfi.name);
1704        }
1705        pw.decreaseIndent();
1706        pw.println();
1707
1708        NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId);
1709        pw.print("Active default network: ");
1710        if (defaultNai == null) {
1711            pw.println("none");
1712        } else {
1713            pw.println(defaultNai.network.netId);
1714        }
1715        pw.println();
1716
1717        pw.println("Current Networks:");
1718        pw.increaseIndent();
1719        for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
1720            pw.println(nai.toString());
1721            pw.increaseIndent();
1722            pw.println("Requests:");
1723            pw.increaseIndent();
1724            for (int i = 0; i < nai.networkRequests.size(); i++) {
1725                pw.println(nai.networkRequests.valueAt(i).toString());
1726            }
1727            pw.decreaseIndent();
1728            pw.println("Lingered:");
1729            pw.increaseIndent();
1730            for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString());
1731            pw.decreaseIndent();
1732            pw.decreaseIndent();
1733        }
1734        pw.decreaseIndent();
1735        pw.println();
1736
1737        pw.println("Network Requests:");
1738        pw.increaseIndent();
1739        for (NetworkRequestInfo nri : mNetworkRequests.values()) {
1740            pw.println(nri.toString());
1741        }
1742        pw.println();
1743        pw.decreaseIndent();
1744
1745        pw.print("mActiveDefaultNetwork: " + mActiveDefaultNetwork);
1746        if (mActiveDefaultNetwork != TYPE_NONE) {
1747            NetworkInfo activeNetworkInfo = getActiveNetworkInfo();
1748            if (activeNetworkInfo != null) {
1749                pw.print(" " + activeNetworkInfo.getState() +
1750                         "/" + activeNetworkInfo.getDetailedState());
1751            }
1752        }
1753        pw.println();
1754
1755        pw.println("mLegacyTypeTracker:");
1756        pw.increaseIndent();
1757        mLegacyTypeTracker.dump(pw);
1758        pw.decreaseIndent();
1759        pw.println();
1760
1761        synchronized (this) {
1762            pw.println("NetworkTransitionWakeLock is currently " +
1763                    (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held.");
1764            pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy);
1765        }
1766        pw.println();
1767
1768        mTethering.dump(fd, pw, args);
1769
1770        if (mInetLog != null) {
1771            pw.println();
1772            pw.println("Inet condition reports:");
1773            pw.increaseIndent();
1774            for(int i = 0; i < mInetLog.size(); i++) {
1775                pw.println(mInetLog.get(i));
1776            }
1777            pw.decreaseIndent();
1778        }
1779    }
1780
1781    private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) {
1782        if (nai.network == null) return false;
1783        final NetworkAgentInfo officialNai;
1784        synchronized (mNetworkForNetId) {
1785            officialNai = mNetworkForNetId.get(nai.network.netId);
1786        }
1787        if (officialNai != null && officialNai.equals(nai)) return true;
1788        if (officialNai != null || VDBG) {
1789            loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai +
1790                " - " + nai);
1791        }
1792        return false;
1793    }
1794
1795    private boolean isRequest(NetworkRequest request) {
1796        return mNetworkRequests.get(request).isRequest;
1797    }
1798
1799    // must be stateless - things change under us.
1800    private class NetworkStateTrackerHandler extends Handler {
1801        public NetworkStateTrackerHandler(Looper looper) {
1802            super(looper);
1803        }
1804
1805        @Override
1806        public void handleMessage(Message msg) {
1807            NetworkInfo info;
1808            switch (msg.what) {
1809                case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: {
1810                    handleAsyncChannelHalfConnect(msg);
1811                    break;
1812                }
1813                case AsyncChannel.CMD_CHANNEL_DISCONNECT: {
1814                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
1815                    if (nai != null) nai.asyncChannel.disconnect();
1816                    break;
1817                }
1818                case AsyncChannel.CMD_CHANNEL_DISCONNECTED: {
1819                    handleAsyncChannelDisconnected(msg);
1820                    break;
1821                }
1822                case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: {
1823                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
1824                    if (nai == null) {
1825                        loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent");
1826                    } else {
1827                        updateCapabilities(nai, (NetworkCapabilities)msg.obj);
1828                    }
1829                    break;
1830                }
1831                case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: {
1832                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
1833                    if (nai == null) {
1834                        loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED");
1835                    } else {
1836                        if (VDBG) {
1837                            log("Update of LinkProperties for " + nai.name() +
1838                                    "; created=" + nai.created);
1839                        }
1840                        LinkProperties oldLp = nai.linkProperties;
1841                        synchronized (nai) {
1842                            nai.linkProperties = (LinkProperties)msg.obj;
1843                        }
1844                        if (nai.created) updateLinkProperties(nai, oldLp);
1845                    }
1846                    break;
1847                }
1848                case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: {
1849                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
1850                    if (nai == null) {
1851                        loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent");
1852                        break;
1853                    }
1854                    info = (NetworkInfo) msg.obj;
1855                    updateNetworkInfo(nai, info);
1856                    break;
1857                }
1858                case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: {
1859                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
1860                    if (nai == null) {
1861                        loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent");
1862                        break;
1863                    }
1864                    Integer score = (Integer) msg.obj;
1865                    if (score != null) updateNetworkScore(nai, score.intValue());
1866                    break;
1867                }
1868                case NetworkAgent.EVENT_UID_RANGES_ADDED: {
1869                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
1870                    if (nai == null) {
1871                        loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent");
1872                        break;
1873                    }
1874                    try {
1875                        mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj);
1876                    } catch (Exception e) {
1877                        // Never crash!
1878                        loge("Exception in addVpnUidRanges: " + e);
1879                    }
1880                    break;
1881                }
1882                case NetworkAgent.EVENT_UID_RANGES_REMOVED: {
1883                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
1884                    if (nai == null) {
1885                        loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent");
1886                        break;
1887                    }
1888                    try {
1889                        mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj);
1890                    } catch (Exception e) {
1891                        // Never crash!
1892                        loge("Exception in removeVpnUidRanges: " + e);
1893                    }
1894                    break;
1895                }
1896                case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: {
1897                    NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
1898                    if (nai == null) {
1899                        loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent");
1900                        break;
1901                    }
1902                    if (nai.created && !nai.networkMisc.explicitlySelected) {
1903                        loge("ERROR: created network explicitly selected.");
1904                    }
1905                    nai.networkMisc.explicitlySelected = true;
1906                    break;
1907                }
1908                case NetworkMonitor.EVENT_NETWORK_TESTED: {
1909                    NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj;
1910                    if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) {
1911                        boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID);
1912                        if (valid) {
1913                            if (DBG) log("Validated " + nai.name());
1914                            final boolean previouslyValidated = nai.validated;
1915                            final int previousScore = nai.getCurrentScore();
1916                            nai.validated = true;
1917                            rematchNetworkAndRequests(nai, !previouslyValidated);
1918                            // If score has changed, rebroadcast to NetworkFactories. b/17726566
1919                            if (nai.getCurrentScore() != previousScore) {
1920                                sendUpdatedScoreToFactories(nai);
1921                            }
1922                        }
1923                        updateInetCondition(nai, valid);
1924                        // Let the NetworkAgent know the state of its network
1925                        nai.asyncChannel.sendMessage(
1926                                android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS,
1927                                (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK),
1928                                0, null);
1929                    }
1930                    break;
1931                }
1932                case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: {
1933                    NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj;
1934                    if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) {
1935                        handleLingerComplete(nai);
1936                    }
1937                    break;
1938                }
1939                case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: {
1940                    if (msg.arg1 == 0) {
1941                        setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null);
1942                    } else {
1943                        NetworkAgentInfo nai = null;
1944                        synchronized (mNetworkForNetId) {
1945                            nai = mNetworkForNetId.get(msg.arg2);
1946                        }
1947                        if (nai == null) {
1948                            loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor");
1949                            break;
1950                        }
1951                        setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(),
1952                                nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj);
1953                    }
1954                    break;
1955                }
1956                case NetworkStateTracker.EVENT_STATE_CHANGED: {
1957                    info = (NetworkInfo) msg.obj;
1958                    NetworkInfo.State state = info.getState();
1959
1960                    if (VDBG || (state == NetworkInfo.State.CONNECTED) ||
1961                            (state == NetworkInfo.State.DISCONNECTED) ||
1962                            (state == NetworkInfo.State.SUSPENDED)) {
1963                        log("ConnectivityChange for " +
1964                            info.getTypeName() + ": " +
1965                            state + "/" + info.getDetailedState());
1966                    }
1967
1968                    EventLogTags.writeConnectivityStateChanged(
1969                            info.getType(), info.getSubtype(), info.getDetailedState().ordinal());
1970
1971                    if (info.isConnectedToProvisioningNetwork()) {
1972                        /**
1973                         * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING
1974                         * for now its an in between network, its a network that
1975                         * is actually a default network but we don't want it to be
1976                         * announced as such to keep background applications from
1977                         * trying to use it. It turns out that some still try so we
1978                         * take the additional step of clearing any default routes
1979                         * to the link that may have incorrectly setup by the lower
1980                         * levels.
1981                         */
1982                        LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType());
1983                        if (DBG) {
1984                            log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp);
1985                        }
1986
1987                        // Clear any default routes setup by the radio so
1988                        // any activity by applications trying to use this
1989                        // connection will fail until the provisioning network
1990                        // is enabled.
1991                        /*
1992                        for (RouteInfo r : lp.getRoutes()) {
1993                            removeRoute(lp, r, TO_DEFAULT_TABLE,
1994                                        mNetTrackers[info.getType()].getNetwork().netId);
1995                        }
1996                        */
1997                    } else if (state == NetworkInfo.State.DISCONNECTED) {
1998                    } else if (state == NetworkInfo.State.SUSPENDED) {
1999                    } else if (state == NetworkInfo.State.CONNECTED) {
2000                    //    handleConnect(info);
2001                    }
2002                    if (mLockdownTracker != null) {
2003                        mLockdownTracker.onNetworkInfoChanged(info);
2004                    }
2005                    break;
2006                }
2007                case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: {
2008                    info = (NetworkInfo) msg.obj;
2009                    // TODO: Temporary allowing network configuration
2010                    //       change not resetting sockets.
2011                    //       @see bug/4455071
2012                    /*
2013                    handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()],
2014                            false);
2015                    */
2016                    break;
2017                }
2018            }
2019        }
2020    }
2021
2022    private void handleAsyncChannelHalfConnect(Message msg) {
2023        AsyncChannel ac = (AsyncChannel) msg.obj;
2024        if (mNetworkFactoryInfos.containsKey(msg.replyTo)) {
2025            if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
2026                if (VDBG) log("NetworkFactory connected");
2027                // A network factory has connected.  Send it all current NetworkRequests.
2028                for (NetworkRequestInfo nri : mNetworkRequests.values()) {
2029                    if (nri.isRequest == false) continue;
2030                    NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId);
2031                    ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK,
2032                            (nai != null ? nai.getCurrentScore() : 0), 0, nri.request);
2033                }
2034            } else {
2035                loge("Error connecting NetworkFactory");
2036                mNetworkFactoryInfos.remove(msg.obj);
2037            }
2038        } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) {
2039            if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
2040                if (VDBG) log("NetworkAgent connected");
2041                // A network agent has requested a connection.  Establish the connection.
2042                mNetworkAgentInfos.get(msg.replyTo).asyncChannel.
2043                        sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION);
2044            } else {
2045                loge("Error connecting NetworkAgent");
2046                NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo);
2047                if (nai != null) {
2048                    synchronized (mNetworkForNetId) {
2049                        mNetworkForNetId.remove(nai.network.netId);
2050                    }
2051                    // Just in case.
2052                    mLegacyTypeTracker.remove(nai);
2053                }
2054            }
2055        }
2056    }
2057    private void handleAsyncChannelDisconnected(Message msg) {
2058        NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
2059        if (nai != null) {
2060            if (DBG) {
2061                log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size());
2062            }
2063            // A network agent has disconnected.
2064            if (nai.created) {
2065                // Tell netd to clean up the configuration for this network
2066                // (routing rules, DNS, etc).
2067                try {
2068                    mNetd.removeNetwork(nai.network.netId);
2069                } catch (Exception e) {
2070                    loge("Exception removing network: " + e);
2071                }
2072            }
2073            // TODO - if we move the logic to the network agent (have them disconnect
2074            // because they lost all their requests or because their score isn't good)
2075            // then they would disconnect organically, report their new state and then
2076            // disconnect the channel.
2077            if (nai.networkInfo.isConnected()) {
2078                nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED,
2079                        null, null);
2080            }
2081            if (isDefaultNetwork(nai)) {
2082                mDefaultInetConditionPublished = 0;
2083            }
2084            notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST);
2085            nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED);
2086            mNetworkAgentInfos.remove(msg.replyTo);
2087            updateClat(null, nai.linkProperties, nai);
2088            mLegacyTypeTracker.remove(nai);
2089            synchronized (mNetworkForNetId) {
2090                mNetworkForNetId.remove(nai.network.netId);
2091            }
2092            // Since we've lost the network, go through all the requests that
2093            // it was satisfying and see if any other factory can satisfy them.
2094            // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests
2095            final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>();
2096            for (int i = 0; i < nai.networkRequests.size(); i++) {
2097                NetworkRequest request = nai.networkRequests.valueAt(i);
2098                NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId);
2099                if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) {
2100                    if (DBG) {
2101                        log("Checking for replacement network to handle request " + request );
2102                    }
2103                    mNetworkForRequestId.remove(request.requestId);
2104                    sendUpdatedScoreToFactories(request, 0);
2105                    NetworkAgentInfo alternative = null;
2106                    for (Map.Entry entry : mNetworkAgentInfos.entrySet()) {
2107                        NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue();
2108                        if (existing.networkInfo.isConnected() &&
2109                                request.networkCapabilities.satisfiedByNetworkCapabilities(
2110                                existing.networkCapabilities) &&
2111                                (alternative == null ||
2112                                 alternative.getCurrentScore() < existing.getCurrentScore())) {
2113                            alternative = existing;
2114                        }
2115                    }
2116                    if (alternative != null) {
2117                        if (DBG) log(" found replacement in " + alternative.name());
2118                        if (!toActivate.contains(alternative)) {
2119                            toActivate.add(alternative);
2120                        }
2121                    }
2122                }
2123            }
2124            if (nai.networkRequests.get(mDefaultRequest.requestId) != null) {
2125                removeDataActivityTracking(nai);
2126                mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE;
2127                requestNetworkTransitionWakelock(nai.name());
2128            }
2129            for (NetworkAgentInfo networkToActivate : toActivate) {
2130                networkToActivate.networkLingered.clear();
2131                networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED);
2132                rematchNetworkAndRequests(networkToActivate, false);
2133            }
2134        }
2135    }
2136
2137    private void handleRegisterNetworkRequest(Message msg) {
2138        final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj);
2139        final NetworkCapabilities newCap = nri.request.networkCapabilities;
2140        int score = 0;
2141
2142        // Check for the best currently alive network that satisfies this request
2143        NetworkAgentInfo bestNetwork = null;
2144        for (NetworkAgentInfo network : mNetworkAgentInfos.values()) {
2145            if (DBG) log("handleRegisterNetworkRequest checking " + network.name());
2146            if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) {
2147                if (DBG) log("apparently satisfied.  currentScore=" + network.getCurrentScore());
2148                if ((bestNetwork == null) ||
2149                        bestNetwork.getCurrentScore() < network.getCurrentScore()) {
2150                    if (!nri.isRequest) {
2151                        // Not setting bestNetwork here as a listening NetworkRequest may be
2152                        // satisfied by multiple Networks.  Instead the request is added to
2153                        // each satisfying Network and notified about each.
2154                        network.addRequest(nri.request);
2155                        notifyNetworkCallback(network, nri);
2156                    } else {
2157                        bestNetwork = network;
2158                    }
2159                }
2160            }
2161        }
2162        if (bestNetwork != null) {
2163            if (DBG) log("using " + bestNetwork.name());
2164            if (bestNetwork.networkInfo.isConnected()) {
2165                // Cancel any lingering so the linger timeout doesn't teardown this network
2166                // even though we have a request for it.
2167                bestNetwork.networkLingered.clear();
2168                bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED);
2169            }
2170            // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests
2171            bestNetwork.addRequest(nri.request);
2172            mNetworkForRequestId.put(nri.request.requestId, bestNetwork);
2173            notifyNetworkCallback(bestNetwork, nri);
2174            score = bestNetwork.getCurrentScore();
2175            if (nri.request.legacyType != TYPE_NONE) {
2176                mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork);
2177            }
2178        }
2179        mNetworkRequests.put(nri.request, nri);
2180        if (nri.isRequest) {
2181            if (DBG) log("sending new NetworkRequest to factories");
2182            for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
2183                nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score,
2184                        0, nri.request);
2185            }
2186        }
2187    }
2188
2189    private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) {
2190        NetworkRequestInfo nri = mNetworkRequests.get(request);
2191        if (nri != null) {
2192            if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) {
2193                if (DBG) log("Attempt to release unowned NetworkRequest " + request);
2194                return;
2195            }
2196            if (DBG) log("releasing NetworkRequest " + request);
2197            nri.unlinkDeathRecipient();
2198            mNetworkRequests.remove(request);
2199            if (nri.isRequest) {
2200                // Find all networks that are satisfying this request and remove the request
2201                // from their request lists.
2202                for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
2203                    if (nai.networkRequests.get(nri.request.requestId) != null) {
2204                        nai.networkRequests.remove(nri.request.requestId);
2205                        if (DBG) {
2206                            log(" Removing from current network " + nai.name() +
2207                                    ", leaving " + nai.networkRequests.size() +
2208                                    " requests.");
2209                        }
2210                        // check if has any requests remaining and if not,
2211                        // disconnect (unless it's a VPN).
2212                        boolean keep = nai.isVPN();
2213                        for (int i = 0; i < nai.networkRequests.size() && !keep; i++) {
2214                            NetworkRequest r = nai.networkRequests.valueAt(i);
2215                            if (isRequest(r)) keep = true;
2216                        }
2217                        if (!keep) {
2218                            if (DBG) log("no live requests for " + nai.name() + "; disconnecting");
2219                            nai.asyncChannel.disconnect();
2220                        }
2221                    }
2222                }
2223
2224                // Maintain the illusion.  When this request arrived, we might have preteneded
2225                // that a network connected to serve it, even though the network was already
2226                // connected.  Now that this request has gone away, we might have to pretend
2227                // that the network disconnected.  LegacyTypeTracker will generate that
2228                // phatom disconnect for this type.
2229                NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId);
2230                if (nai != null) {
2231                    mNetworkForRequestId.remove(nri.request.requestId);
2232                    if (nri.request.legacyType != TYPE_NONE) {
2233                        mLegacyTypeTracker.remove(nri.request.legacyType, nai);
2234                    }
2235                }
2236
2237                for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
2238                    nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST,
2239                            nri.request);
2240                }
2241            } else {
2242                // listens don't have a singular affectedNetwork.  Check all networks to see
2243                // if this listen request applies and remove it.
2244                for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
2245                    nai.networkRequests.remove(nri.request.requestId);
2246                }
2247            }
2248            callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED);
2249        }
2250    }
2251
2252    private class InternalHandler extends Handler {
2253        public InternalHandler(Looper looper) {
2254            super(looper);
2255        }
2256
2257        @Override
2258        public void handleMessage(Message msg) {
2259            NetworkInfo info;
2260            switch (msg.what) {
2261                case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK:
2262                case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: {
2263                    String causedBy = null;
2264                    synchronized (ConnectivityService.this) {
2265                        if (msg.arg1 == mNetTransitionWakeLockSerialNumber &&
2266                                mNetTransitionWakeLock.isHeld()) {
2267                            mNetTransitionWakeLock.release();
2268                            causedBy = mNetTransitionWakeLockCausedBy;
2269                        } else {
2270                            break;
2271                        }
2272                    }
2273                    if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) {
2274                        log("Failed to find a new network - expiring NetTransition Wakelock");
2275                    } else {
2276                        log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) +
2277                                " cleared because we found a replacement network");
2278                    }
2279                    break;
2280                }
2281                case EVENT_APPLY_GLOBAL_HTTP_PROXY: {
2282                    handleDeprecatedGlobalHttpProxy();
2283                    break;
2284                }
2285                case EVENT_SET_DEPENDENCY_MET: {
2286                    boolean met = (msg.arg1 == ENABLED);
2287                    handleSetDependencyMet(msg.arg2, met);
2288                    break;
2289                }
2290                case EVENT_SEND_STICKY_BROADCAST_INTENT: {
2291                    Intent intent = (Intent)msg.obj;
2292                    sendStickyBroadcast(intent);
2293                    break;
2294                }
2295                case EVENT_SET_POLICY_DATA_ENABLE: {
2296                    final int networkType = msg.arg1;
2297                    final boolean enabled = msg.arg2 == ENABLED;
2298                    handleSetPolicyDataEnable(networkType, enabled);
2299                    break;
2300                }
2301                case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: {
2302                    int tag = mEnableFailFastMobileDataTag.get();
2303                    if (msg.arg1 == tag) {
2304                        MobileDataStateTracker mobileDst =
2305                            (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE];
2306                        if (mobileDst != null) {
2307                            mobileDst.setEnableFailFastMobileData(msg.arg2);
2308                        }
2309                    } else {
2310                        log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1
2311                                + " != tag:" + tag);
2312                    }
2313                    break;
2314                }
2315                case EVENT_SAMPLE_INTERVAL_ELAPSED: {
2316                    handleNetworkSamplingTimeout();
2317                    break;
2318                }
2319                case EVENT_PROXY_HAS_CHANGED: {
2320                    handleApplyDefaultProxy((ProxyInfo)msg.obj);
2321                    break;
2322                }
2323                case EVENT_REGISTER_NETWORK_FACTORY: {
2324                    handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj);
2325                    break;
2326                }
2327                case EVENT_UNREGISTER_NETWORK_FACTORY: {
2328                    handleUnregisterNetworkFactory((Messenger)msg.obj);
2329                    break;
2330                }
2331                case EVENT_REGISTER_NETWORK_AGENT: {
2332                    handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj);
2333                    break;
2334                }
2335                case EVENT_REGISTER_NETWORK_REQUEST:
2336                case EVENT_REGISTER_NETWORK_LISTENER: {
2337                    handleRegisterNetworkRequest(msg);
2338                    break;
2339                }
2340                case EVENT_RELEASE_NETWORK_REQUEST: {
2341                    handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1);
2342                    break;
2343                }
2344                case EVENT_SYSTEM_READY: {
2345                    for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
2346                        nai.networkMonitor.systemReady = true;
2347                    }
2348                    break;
2349                }
2350            }
2351        }
2352    }
2353
2354    // javadoc from interface
2355    public int tether(String iface) {
2356        ConnectivityManager.enforceTetherChangePermission(mContext);
2357        if (isTetheringSupported()) {
2358            return mTethering.tether(iface);
2359        } else {
2360            return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
2361        }
2362    }
2363
2364    // javadoc from interface
2365    public int untether(String iface) {
2366        ConnectivityManager.enforceTetherChangePermission(mContext);
2367
2368        if (isTetheringSupported()) {
2369            return mTethering.untether(iface);
2370        } else {
2371            return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
2372        }
2373    }
2374
2375    // javadoc from interface
2376    public int getLastTetherError(String iface) {
2377        enforceTetherAccessPermission();
2378
2379        if (isTetheringSupported()) {
2380            return mTethering.getLastTetherError(iface);
2381        } else {
2382            return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
2383        }
2384    }
2385
2386    // TODO - proper iface API for selection by property, inspection, etc
2387    public String[] getTetherableUsbRegexs() {
2388        enforceTetherAccessPermission();
2389        if (isTetheringSupported()) {
2390            return mTethering.getTetherableUsbRegexs();
2391        } else {
2392            return new String[0];
2393        }
2394    }
2395
2396    public String[] getTetherableWifiRegexs() {
2397        enforceTetherAccessPermission();
2398        if (isTetheringSupported()) {
2399            return mTethering.getTetherableWifiRegexs();
2400        } else {
2401            return new String[0];
2402        }
2403    }
2404
2405    public String[] getTetherableBluetoothRegexs() {
2406        enforceTetherAccessPermission();
2407        if (isTetheringSupported()) {
2408            return mTethering.getTetherableBluetoothRegexs();
2409        } else {
2410            return new String[0];
2411        }
2412    }
2413
2414    public int setUsbTethering(boolean enable) {
2415        ConnectivityManager.enforceTetherChangePermission(mContext);
2416        if (isTetheringSupported()) {
2417            return mTethering.setUsbTethering(enable);
2418        } else {
2419            return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
2420        }
2421    }
2422
2423    // TODO - move iface listing, queries, etc to new module
2424    // javadoc from interface
2425    public String[] getTetherableIfaces() {
2426        enforceTetherAccessPermission();
2427        return mTethering.getTetherableIfaces();
2428    }
2429
2430    public String[] getTetheredIfaces() {
2431        enforceTetherAccessPermission();
2432        return mTethering.getTetheredIfaces();
2433    }
2434
2435    public String[] getTetheringErroredIfaces() {
2436        enforceTetherAccessPermission();
2437        return mTethering.getErroredIfaces();
2438    }
2439
2440    public String[] getTetheredDhcpRanges() {
2441        enforceConnectivityInternalPermission();
2442        return mTethering.getTetheredDhcpRanges();
2443    }
2444
2445    // if ro.tether.denied = true we default to no tethering
2446    // gservices could set the secure setting to 1 though to enable it on a build where it
2447    // had previously been turned off.
2448    public boolean isTetheringSupported() {
2449        enforceTetherAccessPermission();
2450        int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1);
2451        boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(),
2452                Settings.Global.TETHER_SUPPORTED, defaultVal) != 0)
2453                && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING);
2454        return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 ||
2455                mTethering.getTetherableWifiRegexs().length != 0 ||
2456                mTethering.getTetherableBluetoothRegexs().length != 0) &&
2457                mTethering.getUpstreamIfaceTypes().length != 0);
2458    }
2459
2460    // Called when we lose the default network and have no replacement yet.
2461    // This will automatically be cleared after X seconds or a new default network
2462    // becomes CONNECTED, whichever happens first.  The timer is started by the
2463    // first caller and not restarted by subsequent callers.
2464    private void requestNetworkTransitionWakelock(String forWhom) {
2465        int serialNum = 0;
2466        synchronized (this) {
2467            if (mNetTransitionWakeLock.isHeld()) return;
2468            serialNum = ++mNetTransitionWakeLockSerialNumber;
2469            mNetTransitionWakeLock.acquire();
2470            mNetTransitionWakeLockCausedBy = forWhom;
2471        }
2472        mHandler.sendMessageDelayed(mHandler.obtainMessage(
2473                EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0),
2474                mNetTransitionWakeLockTimeout);
2475        return;
2476    }
2477
2478    // 100 percent is full good, 0 is full bad.
2479    public void reportInetCondition(int networkType, int percentage) {
2480        if (percentage > 50) return;  // don't handle good network reports
2481        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
2482        if (nai != null) reportBadNetwork(nai.network);
2483    }
2484
2485    public void reportBadNetwork(Network network) {
2486        enforceAccessPermission();
2487        enforceInternetPermission();
2488
2489        if (network == null) return;
2490
2491        final int uid = Binder.getCallingUid();
2492        NetworkAgentInfo nai = null;
2493        synchronized (mNetworkForNetId) {
2494            nai = mNetworkForNetId.get(network.netId);
2495        }
2496        if (nai == null) return;
2497        if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid);
2498        synchronized (nai) {
2499            // Validating an uncreated network could result in a call to rematchNetworkAndRequests()
2500            // which isn't meant to work on uncreated networks.
2501            if (!nai.created) return;
2502
2503            if (isNetworkBlocked(nai, uid)) return;
2504
2505            nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid);
2506        }
2507    }
2508
2509    public ProxyInfo getProxy() {
2510        // this information is already available as a world read/writable jvm property
2511        // so this API change wouldn't have a benifit.  It also breaks the passing
2512        // of proxy info to all the JVMs.
2513        // enforceAccessPermission();
2514        synchronized (mProxyLock) {
2515            ProxyInfo ret = mGlobalProxy;
2516            if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy;
2517            return ret;
2518        }
2519    }
2520
2521    public void setGlobalProxy(ProxyInfo proxyProperties) {
2522        enforceConnectivityInternalPermission();
2523
2524        synchronized (mProxyLock) {
2525            if (proxyProperties == mGlobalProxy) return;
2526            if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return;
2527            if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return;
2528
2529            String host = "";
2530            int port = 0;
2531            String exclList = "";
2532            String pacFileUrl = "";
2533            if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) ||
2534                    (proxyProperties.getPacFileUrl() != null))) {
2535                if (!proxyProperties.isValid()) {
2536                    if (DBG)
2537                        log("Invalid proxy properties, ignoring: " + proxyProperties.toString());
2538                    return;
2539                }
2540                mGlobalProxy = new ProxyInfo(proxyProperties);
2541                host = mGlobalProxy.getHost();
2542                port = mGlobalProxy.getPort();
2543                exclList = mGlobalProxy.getExclusionListAsString();
2544                if (proxyProperties.getPacFileUrl() != null) {
2545                    pacFileUrl = proxyProperties.getPacFileUrl().toString();
2546                }
2547            } else {
2548                mGlobalProxy = null;
2549            }
2550            ContentResolver res = mContext.getContentResolver();
2551            final long token = Binder.clearCallingIdentity();
2552            try {
2553                Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host);
2554                Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port);
2555                Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST,
2556                        exclList);
2557                Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl);
2558            } finally {
2559                Binder.restoreCallingIdentity(token);
2560            }
2561
2562            if (mGlobalProxy == null) {
2563                proxyProperties = mDefaultProxy;
2564            }
2565            sendProxyBroadcast(proxyProperties);
2566        }
2567    }
2568
2569    private void loadGlobalProxy() {
2570        ContentResolver res = mContext.getContentResolver();
2571        String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST);
2572        int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0);
2573        String exclList = Settings.Global.getString(res,
2574                Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST);
2575        String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC);
2576        if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) {
2577            ProxyInfo proxyProperties;
2578            if (!TextUtils.isEmpty(pacFileUrl)) {
2579                proxyProperties = new ProxyInfo(pacFileUrl);
2580            } else {
2581                proxyProperties = new ProxyInfo(host, port, exclList);
2582            }
2583            if (!proxyProperties.isValid()) {
2584                if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString());
2585                return;
2586            }
2587
2588            synchronized (mProxyLock) {
2589                mGlobalProxy = proxyProperties;
2590            }
2591        }
2592    }
2593
2594    public ProxyInfo getGlobalProxy() {
2595        // this information is already available as a world read/writable jvm property
2596        // so this API change wouldn't have a benifit.  It also breaks the passing
2597        // of proxy info to all the JVMs.
2598        // enforceAccessPermission();
2599        synchronized (mProxyLock) {
2600            return mGlobalProxy;
2601        }
2602    }
2603
2604    private void handleApplyDefaultProxy(ProxyInfo proxy) {
2605        if (proxy != null && TextUtils.isEmpty(proxy.getHost())
2606                && (proxy.getPacFileUrl() == null)) {
2607            proxy = null;
2608        }
2609        synchronized (mProxyLock) {
2610            if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return;
2611            if (mDefaultProxy == proxy) return; // catches repeated nulls
2612            if (proxy != null &&  !proxy.isValid()) {
2613                if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString());
2614                return;
2615            }
2616
2617            // This call could be coming from the PacManager, containing the port of the local
2618            // proxy.  If this new proxy matches the global proxy then copy this proxy to the
2619            // global (to get the correct local port), and send a broadcast.
2620            // TODO: Switch PacManager to have its own message to send back rather than
2621            // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy.
2622            if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null)
2623                    && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) {
2624                mGlobalProxy = proxy;
2625                sendProxyBroadcast(mGlobalProxy);
2626                return;
2627            }
2628            mDefaultProxy = proxy;
2629
2630            if (mGlobalProxy != null) return;
2631            if (!mDefaultProxyDisabled) {
2632                sendProxyBroadcast(proxy);
2633            }
2634        }
2635    }
2636
2637    private void handleDeprecatedGlobalHttpProxy() {
2638        String proxy = Settings.Global.getString(mContext.getContentResolver(),
2639                Settings.Global.HTTP_PROXY);
2640        if (!TextUtils.isEmpty(proxy)) {
2641            String data[] = proxy.split(":");
2642            if (data.length == 0) {
2643                return;
2644            }
2645
2646            String proxyHost =  data[0];
2647            int proxyPort = 8080;
2648            if (data.length > 1) {
2649                try {
2650                    proxyPort = Integer.parseInt(data[1]);
2651                } catch (NumberFormatException e) {
2652                    return;
2653                }
2654            }
2655            ProxyInfo p = new ProxyInfo(data[0], proxyPort, "");
2656            setGlobalProxy(p);
2657        }
2658    }
2659
2660    private void sendProxyBroadcast(ProxyInfo proxy) {
2661        if (proxy == null) proxy = new ProxyInfo("", 0, "");
2662        if (mPacManager.setCurrentProxyScriptUrl(proxy)) return;
2663        if (DBG) log("sending Proxy Broadcast for " + proxy);
2664        Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);
2665        intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING |
2666            Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
2667        intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy);
2668        final long ident = Binder.clearCallingIdentity();
2669        try {
2670            mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
2671        } finally {
2672            Binder.restoreCallingIdentity(ident);
2673        }
2674    }
2675
2676    private static class SettingsObserver extends ContentObserver {
2677        private int mWhat;
2678        private Handler mHandler;
2679        SettingsObserver(Handler handler, int what) {
2680            super(handler);
2681            mHandler = handler;
2682            mWhat = what;
2683        }
2684
2685        void observe(Context context) {
2686            ContentResolver resolver = context.getContentResolver();
2687            resolver.registerContentObserver(Settings.Global.getUriFor(
2688                    Settings.Global.HTTP_PROXY), false, this);
2689        }
2690
2691        @Override
2692        public void onChange(boolean selfChange) {
2693            mHandler.obtainMessage(mWhat).sendToTarget();
2694        }
2695    }
2696
2697    private static void log(String s) {
2698        Slog.d(TAG, s);
2699    }
2700
2701    private static void loge(String s) {
2702        Slog.e(TAG, s);
2703    }
2704
2705    int convertFeatureToNetworkType(int networkType, String feature) {
2706        int usedNetworkType = networkType;
2707
2708        if(networkType == ConnectivityManager.TYPE_MOBILE) {
2709            if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) {
2710                usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS;
2711            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) {
2712                usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL;
2713            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) ||
2714                    TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) {
2715                usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN;
2716            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) {
2717                usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI;
2718            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) {
2719                usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA;
2720            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) {
2721                usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS;
2722            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) {
2723                usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS;
2724            } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) {
2725                usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY;
2726            } else {
2727                Slog.e(TAG, "Can't match any mobile netTracker!");
2728            }
2729        } else if (networkType == ConnectivityManager.TYPE_WIFI) {
2730            if (TextUtils.equals(feature, "p2p")) {
2731                usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P;
2732            } else {
2733                Slog.e(TAG, "Can't match any wifi netTracker!");
2734            }
2735        } else {
2736            Slog.e(TAG, "Unexpected network type");
2737        }
2738        return usedNetworkType;
2739    }
2740
2741    private static <T> T checkNotNull(T value, String message) {
2742        if (value == null) {
2743            throw new NullPointerException(message);
2744        }
2745        return value;
2746    }
2747
2748    /**
2749     * Prepare for a VPN application. This method is used by VpnDialogs
2750     * and not available in ConnectivityManager. Permissions are checked
2751     * in Vpn class.
2752     * @hide
2753     */
2754    @Override
2755    public boolean prepareVpn(String oldPackage, String newPackage) {
2756        throwIfLockdownEnabled();
2757        int user = UserHandle.getUserId(Binder.getCallingUid());
2758        synchronized(mVpns) {
2759            return mVpns.get(user).prepare(oldPackage, newPackage);
2760        }
2761    }
2762
2763    /**
2764     * Set whether the current VPN package has the ability to launch VPNs without
2765     * user intervention. This method is used by system UIs and not available
2766     * in ConnectivityManager. Permissions are checked in Vpn class.
2767     * @hide
2768     */
2769    @Override
2770    public void setVpnPackageAuthorization(boolean authorized) {
2771        int user = UserHandle.getUserId(Binder.getCallingUid());
2772        synchronized(mVpns) {
2773            mVpns.get(user).setPackageAuthorization(authorized);
2774        }
2775    }
2776
2777    /**
2778     * Configure a TUN interface and return its file descriptor. Parameters
2779     * are encoded and opaque to this class. This method is used by VpnBuilder
2780     * and not available in ConnectivityManager. Permissions are checked in
2781     * Vpn class.
2782     * @hide
2783     */
2784    @Override
2785    public ParcelFileDescriptor establishVpn(VpnConfig config) {
2786        throwIfLockdownEnabled();
2787        int user = UserHandle.getUserId(Binder.getCallingUid());
2788        synchronized(mVpns) {
2789            return mVpns.get(user).establish(config);
2790        }
2791    }
2792
2793    /**
2794     * Start legacy VPN, controlling native daemons as needed. Creates a
2795     * secondary thread to perform connection work, returning quickly.
2796     */
2797    @Override
2798    public void startLegacyVpn(VpnProfile profile) {
2799        throwIfLockdownEnabled();
2800        final LinkProperties egress = getActiveLinkProperties();
2801        if (egress == null) {
2802            throw new IllegalStateException("Missing active network connection");
2803        }
2804        int user = UserHandle.getUserId(Binder.getCallingUid());
2805        synchronized(mVpns) {
2806            mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress);
2807        }
2808    }
2809
2810    /**
2811     * Return the information of the ongoing legacy VPN. This method is used
2812     * by VpnSettings and not available in ConnectivityManager. Permissions
2813     * are checked in Vpn class.
2814     * @hide
2815     */
2816    @Override
2817    public LegacyVpnInfo getLegacyVpnInfo() {
2818        throwIfLockdownEnabled();
2819        int user = UserHandle.getUserId(Binder.getCallingUid());
2820        synchronized(mVpns) {
2821            return mVpns.get(user).getLegacyVpnInfo();
2822        }
2823    }
2824
2825    /**
2826     * Returns the information of the ongoing VPN. This method is used by VpnDialogs and
2827     * not available in ConnectivityManager.
2828     * Permissions are checked in Vpn class.
2829     * @hide
2830     */
2831    @Override
2832    public VpnConfig getVpnConfig() {
2833        int user = UserHandle.getUserId(Binder.getCallingUid());
2834        synchronized(mVpns) {
2835            return mVpns.get(user).getVpnConfig();
2836        }
2837    }
2838
2839    @Override
2840    public boolean updateLockdownVpn() {
2841        if (Binder.getCallingUid() != Process.SYSTEM_UID) {
2842            Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM");
2843            return false;
2844        }
2845
2846        // Tear down existing lockdown if profile was removed
2847        mLockdownEnabled = LockdownVpnTracker.isEnabled();
2848        if (mLockdownEnabled) {
2849            if (!mKeyStore.isUnlocked()) {
2850                Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker");
2851                return false;
2852            }
2853
2854            final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN));
2855            final VpnProfile profile = VpnProfile.decode(
2856                    profileName, mKeyStore.get(Credentials.VPN + profileName));
2857            int user = UserHandle.getUserId(Binder.getCallingUid());
2858            synchronized(mVpns) {
2859                setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user),
2860                            profile));
2861            }
2862        } else {
2863            setLockdownTracker(null);
2864        }
2865
2866        return true;
2867    }
2868
2869    /**
2870     * Internally set new {@link LockdownVpnTracker}, shutting down any existing
2871     * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown.
2872     */
2873    private void setLockdownTracker(LockdownVpnTracker tracker) {
2874        // Shutdown any existing tracker
2875        final LockdownVpnTracker existing = mLockdownTracker;
2876        mLockdownTracker = null;
2877        if (existing != null) {
2878            existing.shutdown();
2879        }
2880
2881        try {
2882            if (tracker != null) {
2883                mNetd.setFirewallEnabled(true);
2884                mNetd.setFirewallInterfaceRule("lo", true);
2885                mLockdownTracker = tracker;
2886                mLockdownTracker.init();
2887            } else {
2888                mNetd.setFirewallEnabled(false);
2889            }
2890        } catch (RemoteException e) {
2891            // ignored; NMS lives inside system_server
2892        }
2893    }
2894
2895    private void throwIfLockdownEnabled() {
2896        if (mLockdownEnabled) {
2897            throw new IllegalStateException("Unavailable in lockdown mode");
2898        }
2899    }
2900
2901    public void supplyMessenger(int networkType, Messenger messenger) {
2902        enforceConnectivityInternalPermission();
2903
2904        if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) {
2905            mNetTrackers[networkType].supplyMessenger(messenger);
2906        }
2907    }
2908
2909    public int findConnectionTypeForIface(String iface) {
2910        enforceConnectivityInternalPermission();
2911
2912        if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE;
2913
2914        synchronized(mNetworkForNetId) {
2915            for (int i = 0; i < mNetworkForNetId.size(); i++) {
2916                NetworkAgentInfo nai = mNetworkForNetId.valueAt(i);
2917                LinkProperties lp = nai.linkProperties;
2918                if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) {
2919                    return nai.networkInfo.getType();
2920                }
2921            }
2922        }
2923        return ConnectivityManager.TYPE_NONE;
2924    }
2925
2926    /**
2927     * Have mobile data fail fast if enabled.
2928     *
2929     * @param enabled DctConstants.ENABLED/DISABLED
2930     */
2931    private void setEnableFailFastMobileData(int enabled) {
2932        int tag;
2933
2934        if (enabled == DctConstants.ENABLED) {
2935            tag = mEnableFailFastMobileDataTag.incrementAndGet();
2936        } else {
2937            tag = mEnableFailFastMobileDataTag.get();
2938        }
2939        mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag,
2940                         enabled));
2941    }
2942
2943    @Override
2944    public int checkMobileProvisioning(int suggestedTimeOutMs) {
2945        // TODO: Remove?  Any reason to trigger a provisioning check?
2946        return -1;
2947    }
2948
2949    private static final String NOTIFICATION_ID = "CaptivePortal.Notification";
2950    private volatile boolean mIsNotificationVisible = false;
2951
2952    private void setProvNotificationVisible(boolean visible, int networkType, String action) {
2953        if (DBG) {
2954            log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType
2955                + " action=" + action);
2956        }
2957        Intent intent = new Intent(action);
2958        PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0);
2959        // Concatenate the range of types onto the range of NetIDs.
2960        int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE);
2961        setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent);
2962    }
2963
2964    /**
2965     * Show or hide network provisioning notificaitons.
2966     *
2967     * @param id an identifier that uniquely identifies this notification.  This must match
2968     *         between show and hide calls.  We use the NetID value but for legacy callers
2969     *         we concatenate the range of types with the range of NetIDs.
2970     */
2971    private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType,
2972            String extraInfo, PendingIntent intent) {
2973        if (DBG) {
2974            log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" +
2975                networkType + " extraInfo=" + extraInfo);
2976        }
2977
2978        Resources r = Resources.getSystem();
2979        NotificationManager notificationManager = (NotificationManager) mContext
2980            .getSystemService(Context.NOTIFICATION_SERVICE);
2981
2982        if (visible) {
2983            CharSequence title;
2984            CharSequence details;
2985            int icon;
2986            Notification notification = new Notification();
2987            switch (networkType) {
2988                case ConnectivityManager.TYPE_WIFI:
2989                    title = r.getString(R.string.wifi_available_sign_in, 0);
2990                    details = r.getString(R.string.network_available_sign_in_detailed,
2991                            extraInfo);
2992                    icon = R.drawable.stat_notify_wifi_in_range;
2993                    break;
2994                case ConnectivityManager.TYPE_MOBILE:
2995                case ConnectivityManager.TYPE_MOBILE_HIPRI:
2996                    title = r.getString(R.string.network_available_sign_in, 0);
2997                    // TODO: Change this to pull from NetworkInfo once a printable
2998                    // name has been added to it
2999                    details = mTelephonyManager.getNetworkOperatorName();
3000                    icon = R.drawable.stat_notify_rssi_in_range;
3001                    break;
3002                default:
3003                    title = r.getString(R.string.network_available_sign_in, 0);
3004                    details = r.getString(R.string.network_available_sign_in_detailed,
3005                            extraInfo);
3006                    icon = R.drawable.stat_notify_rssi_in_range;
3007                    break;
3008            }
3009
3010            notification.when = 0;
3011            notification.icon = icon;
3012            notification.flags = Notification.FLAG_AUTO_CANCEL;
3013            notification.tickerText = title;
3014            notification.color = mContext.getResources().getColor(
3015                    com.android.internal.R.color.system_notification_accent_color);
3016            notification.setLatestEventInfo(mContext, title, details, notification.contentIntent);
3017            notification.contentIntent = intent;
3018
3019            try {
3020                notificationManager.notify(NOTIFICATION_ID, id, notification);
3021            } catch (NullPointerException npe) {
3022                loge("setNotificaitionVisible: visible notificationManager npe=" + npe);
3023                npe.printStackTrace();
3024            }
3025        } else {
3026            try {
3027                notificationManager.cancel(NOTIFICATION_ID, id);
3028            } catch (NullPointerException npe) {
3029                loge("setNotificaitionVisible: cancel notificationManager npe=" + npe);
3030                npe.printStackTrace();
3031            }
3032        }
3033        mIsNotificationVisible = visible;
3034    }
3035
3036    /** Location to an updatable file listing carrier provisioning urls.
3037     *  An example:
3038     *
3039     * <?xml version="1.0" encoding="utf-8"?>
3040     *  <provisioningUrls>
3041     *   <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl>
3042     *   <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl>
3043     *  </provisioningUrls>
3044     */
3045    private static final String PROVISIONING_URL_PATH =
3046            "/data/misc/radio/provisioning_urls.xml";
3047    private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH);
3048
3049    /** XML tag for root element. */
3050    private static final String TAG_PROVISIONING_URLS = "provisioningUrls";
3051    /** XML tag for individual url */
3052    private static final String TAG_PROVISIONING_URL = "provisioningUrl";
3053    /** XML tag for redirected url */
3054    private static final String TAG_REDIRECTED_URL = "redirectedUrl";
3055    /** XML attribute for mcc */
3056    private static final String ATTR_MCC = "mcc";
3057    /** XML attribute for mnc */
3058    private static final String ATTR_MNC = "mnc";
3059
3060    private static final int REDIRECTED_PROVISIONING = 1;
3061    private static final int PROVISIONING = 2;
3062
3063    private String getProvisioningUrlBaseFromFile(int type) {
3064        FileReader fileReader = null;
3065        XmlPullParser parser = null;
3066        Configuration config = mContext.getResources().getConfiguration();
3067        String tagType;
3068
3069        switch (type) {
3070            case PROVISIONING:
3071                tagType = TAG_PROVISIONING_URL;
3072                break;
3073            case REDIRECTED_PROVISIONING:
3074                tagType = TAG_REDIRECTED_URL;
3075                break;
3076            default:
3077                throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " +
3078                        type);
3079        }
3080
3081        try {
3082            fileReader = new FileReader(mProvisioningUrlFile);
3083            parser = Xml.newPullParser();
3084            parser.setInput(fileReader);
3085            XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS);
3086
3087            while (true) {
3088                XmlUtils.nextElement(parser);
3089
3090                String element = parser.getName();
3091                if (element == null) break;
3092
3093                if (element.equals(tagType)) {
3094                    String mcc = parser.getAttributeValue(null, ATTR_MCC);
3095                    try {
3096                        if (mcc != null && Integer.parseInt(mcc) == config.mcc) {
3097                            String mnc = parser.getAttributeValue(null, ATTR_MNC);
3098                            if (mnc != null && Integer.parseInt(mnc) == config.mnc) {
3099                                parser.next();
3100                                if (parser.getEventType() == XmlPullParser.TEXT) {
3101                                    return parser.getText();
3102                                }
3103                            }
3104                        }
3105                    } catch (NumberFormatException e) {
3106                        loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e);
3107                    }
3108                }
3109            }
3110            return null;
3111        } catch (FileNotFoundException e) {
3112            loge("Carrier Provisioning Urls file not found");
3113        } catch (XmlPullParserException e) {
3114            loge("Xml parser exception reading Carrier Provisioning Urls file: " + e);
3115        } catch (IOException e) {
3116            loge("I/O exception reading Carrier Provisioning Urls file: " + e);
3117        } finally {
3118            if (fileReader != null) {
3119                try {
3120                    fileReader.close();
3121                } catch (IOException e) {}
3122            }
3123        }
3124        return null;
3125    }
3126
3127    @Override
3128    public String getMobileRedirectedProvisioningUrl() {
3129        enforceConnectivityInternalPermission();
3130        String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING);
3131        if (TextUtils.isEmpty(url)) {
3132            url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url);
3133        }
3134        return url;
3135    }
3136
3137    @Override
3138    public String getMobileProvisioningUrl() {
3139        enforceConnectivityInternalPermission();
3140        String url = getProvisioningUrlBaseFromFile(PROVISIONING);
3141        if (TextUtils.isEmpty(url)) {
3142            url = mContext.getResources().getString(R.string.mobile_provisioning_url);
3143            log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url);
3144        } else {
3145            log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url);
3146        }
3147        // populate the iccid, imei and phone number in the provisioning url.
3148        if (!TextUtils.isEmpty(url)) {
3149            String phoneNumber = mTelephonyManager.getLine1Number();
3150            if (TextUtils.isEmpty(phoneNumber)) {
3151                phoneNumber = "0000000000";
3152            }
3153            url = String.format(url,
3154                    mTelephonyManager.getSimSerialNumber() /* ICCID */,
3155                    mTelephonyManager.getDeviceId() /* IMEI */,
3156                    phoneNumber /* Phone numer */);
3157        }
3158
3159        return url;
3160    }
3161
3162    @Override
3163    public void setProvisioningNotificationVisible(boolean visible, int networkType,
3164            String action) {
3165        enforceConnectivityInternalPermission();
3166        final long ident = Binder.clearCallingIdentity();
3167        try {
3168            setProvNotificationVisible(visible, networkType, action);
3169        } finally {
3170            Binder.restoreCallingIdentity(ident);
3171        }
3172    }
3173
3174    @Override
3175    public void setAirplaneMode(boolean enable) {
3176        enforceConnectivityInternalPermission();
3177        final long ident = Binder.clearCallingIdentity();
3178        try {
3179            final ContentResolver cr = mContext.getContentResolver();
3180            Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0);
3181            Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
3182            intent.putExtra("state", enable);
3183            mContext.sendBroadcast(intent);
3184        } finally {
3185            Binder.restoreCallingIdentity(ident);
3186        }
3187    }
3188
3189    private void onUserStart(int userId) {
3190        synchronized(mVpns) {
3191            Vpn userVpn = mVpns.get(userId);
3192            if (userVpn != null) {
3193                loge("Starting user already has a VPN");
3194                return;
3195            }
3196            userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId);
3197            mVpns.put(userId, userVpn);
3198        }
3199    }
3200
3201    private void onUserStop(int userId) {
3202        synchronized(mVpns) {
3203            Vpn userVpn = mVpns.get(userId);
3204            if (userVpn == null) {
3205                loge("Stopping user has no VPN");
3206                return;
3207            }
3208            mVpns.delete(userId);
3209        }
3210    }
3211
3212    private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() {
3213        @Override
3214        public void onReceive(Context context, Intent intent) {
3215            final String action = intent.getAction();
3216            final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL);
3217            if (userId == UserHandle.USER_NULL) return;
3218
3219            if (Intent.ACTION_USER_STARTING.equals(action)) {
3220                onUserStart(userId);
3221            } else if (Intent.ACTION_USER_STOPPING.equals(action)) {
3222                onUserStop(userId);
3223            }
3224        }
3225    };
3226
3227    @Override
3228    public LinkQualityInfo getLinkQualityInfo(int networkType) {
3229        enforceAccessPermission();
3230        if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) {
3231            return mNetTrackers[networkType].getLinkQualityInfo();
3232        } else {
3233            return null;
3234        }
3235    }
3236
3237    @Override
3238    public LinkQualityInfo getActiveLinkQualityInfo() {
3239        enforceAccessPermission();
3240        if (isNetworkTypeValid(mActiveDefaultNetwork) &&
3241                mNetTrackers[mActiveDefaultNetwork] != null) {
3242            return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo();
3243        } else {
3244            return null;
3245        }
3246    }
3247
3248    @Override
3249    public LinkQualityInfo[] getAllLinkQualityInfo() {
3250        enforceAccessPermission();
3251        final ArrayList<LinkQualityInfo> result = Lists.newArrayList();
3252        for (NetworkStateTracker tracker : mNetTrackers) {
3253            if (tracker != null) {
3254                LinkQualityInfo li = tracker.getLinkQualityInfo();
3255                if (li != null) {
3256                    result.add(li);
3257                }
3258            }
3259        }
3260
3261        return result.toArray(new LinkQualityInfo[result.size()]);
3262    }
3263
3264    /* Infrastructure for network sampling */
3265
3266    private void handleNetworkSamplingTimeout() {
3267
3268        if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics ..");
3269
3270        // initialize list of interfaces ..
3271        Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample =
3272                new HashMap<String, SamplingDataTracker.SamplingSnapshot>();
3273        for (NetworkStateTracker tracker : mNetTrackers) {
3274            if (tracker != null) {
3275                String ifaceName = tracker.getNetworkInterfaceName();
3276                if (ifaceName != null) {
3277                    mapIfaceToSample.put(ifaceName, null);
3278                }
3279            }
3280        }
3281
3282        // Read samples for all interfaces
3283        SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample);
3284
3285        // process samples for all networks
3286        for (NetworkStateTracker tracker : mNetTrackers) {
3287            if (tracker != null) {
3288                String ifaceName = tracker.getNetworkInterfaceName();
3289                SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName);
3290                if (ss != null) {
3291                    // end the previous sampling cycle
3292                    tracker.stopSampling(ss);
3293                    // start a new sampling cycle ..
3294                    tracker.startSampling(ss);
3295                }
3296            }
3297        }
3298
3299        if (SAMPLE_DBG) log("Done.");
3300
3301        int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(),
3302                Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS,
3303                DEFAULT_SAMPLING_INTERVAL_IN_SECONDS);
3304
3305        if (SAMPLE_DBG) {
3306            log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds");
3307        }
3308
3309        setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent);
3310    }
3311
3312    /**
3313     * Sets a network sampling alarm.
3314     */
3315    void setAlarm(int timeoutInMilliseconds, PendingIntent intent) {
3316        long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds;
3317        int alarmType;
3318        if (Resources.getSystem().getBoolean(
3319                R.bool.config_networkSamplingWakesDevice)) {
3320            alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP;
3321        } else {
3322            alarmType = AlarmManager.ELAPSED_REALTIME;
3323        }
3324        mAlarmManager.set(alarmType, wakeupTime, intent);
3325    }
3326
3327    private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos =
3328            new HashMap<Messenger, NetworkFactoryInfo>();
3329    private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests =
3330            new HashMap<NetworkRequest, NetworkRequestInfo>();
3331
3332    private static class NetworkFactoryInfo {
3333        public final String name;
3334        public final Messenger messenger;
3335        public final AsyncChannel asyncChannel;
3336
3337        public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) {
3338            this.name = name;
3339            this.messenger = messenger;
3340            this.asyncChannel = asyncChannel;
3341        }
3342    }
3343
3344    /**
3345     * Tracks info about the requester.
3346     * Also used to notice when the calling process dies so we can self-expire
3347     */
3348    private class NetworkRequestInfo implements IBinder.DeathRecipient {
3349        static final boolean REQUEST = true;
3350        static final boolean LISTEN = false;
3351
3352        final NetworkRequest request;
3353        IBinder mBinder;
3354        final int mPid;
3355        final int mUid;
3356        final Messenger messenger;
3357        final boolean isRequest;
3358
3359        NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) {
3360            super();
3361            messenger = m;
3362            request = r;
3363            mBinder = binder;
3364            mPid = getCallingPid();
3365            mUid = getCallingUid();
3366            this.isRequest = isRequest;
3367
3368            try {
3369                mBinder.linkToDeath(this, 0);
3370            } catch (RemoteException e) {
3371                binderDied();
3372            }
3373        }
3374
3375        void unlinkDeathRecipient() {
3376            mBinder.unlinkToDeath(this, 0);
3377        }
3378
3379        public void binderDied() {
3380            log("ConnectivityService NetworkRequestInfo binderDied(" +
3381                    request + ", " + mBinder + ")");
3382            releaseNetworkRequest(request);
3383        }
3384
3385        public String toString() {
3386            return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" +
3387                    mPid + " for " + request;
3388        }
3389    }
3390
3391    @Override
3392    public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities,
3393            Messenger messenger, int timeoutMs, IBinder binder, int legacyType) {
3394        if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
3395                == false) {
3396            enforceConnectivityInternalPermission();
3397        } else {
3398            enforceChangePermission();
3399        }
3400
3401        networkCapabilities = new NetworkCapabilities(networkCapabilities);
3402
3403        // if UID is restricted, don't allow them to bring up metered APNs
3404        if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED)
3405                == false) {
3406            final int uidRules;
3407            final int uid = Binder.getCallingUid();
3408            synchronized(mRulesLock) {
3409                uidRules = mUidRules.get(uid, RULE_ALLOW_ALL);
3410            }
3411            if ((uidRules & RULE_REJECT_METERED) != 0) {
3412                // we could silently fail or we can filter the available nets to only give
3413                // them those they have access to.  Chose the more useful
3414                networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
3415            }
3416        }
3417
3418        if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) {
3419            throw new IllegalArgumentException("Bad timeout specified");
3420        }
3421        NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType,
3422                nextNetworkRequestId());
3423        if (DBG) log("requestNetwork for " + networkRequest);
3424        NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder,
3425                NetworkRequestInfo.REQUEST);
3426
3427        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri));
3428        if (timeoutMs > 0) {
3429            mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST,
3430                    nri), timeoutMs);
3431        }
3432        return networkRequest;
3433    }
3434
3435    @Override
3436    public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities,
3437            PendingIntent operation) {
3438        // TODO
3439        return null;
3440    }
3441
3442    @Override
3443    public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities,
3444            Messenger messenger, IBinder binder) {
3445        enforceAccessPermission();
3446
3447        NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities(
3448                networkCapabilities), TYPE_NONE, nextNetworkRequestId());
3449        if (DBG) log("listenForNetwork for " + networkRequest);
3450        NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder,
3451                NetworkRequestInfo.LISTEN);
3452
3453        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri));
3454        return networkRequest;
3455    }
3456
3457    @Override
3458    public void pendingListenForNetwork(NetworkCapabilities networkCapabilities,
3459            PendingIntent operation) {
3460    }
3461
3462    @Override
3463    public void releaseNetworkRequest(NetworkRequest networkRequest) {
3464        mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(),
3465                0, networkRequest));
3466    }
3467
3468    @Override
3469    public void registerNetworkFactory(Messenger messenger, String name) {
3470        enforceConnectivityInternalPermission();
3471        NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel());
3472        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi));
3473    }
3474
3475    private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) {
3476        if (DBG) log("Got NetworkFactory Messenger for " + nfi.name);
3477        mNetworkFactoryInfos.put(nfi.messenger, nfi);
3478        nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger);
3479    }
3480
3481    @Override
3482    public void unregisterNetworkFactory(Messenger messenger) {
3483        enforceConnectivityInternalPermission();
3484        mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger));
3485    }
3486
3487    private void handleUnregisterNetworkFactory(Messenger messenger) {
3488        NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger);
3489        if (nfi == null) {
3490            loge("Failed to find Messenger in unregisterNetworkFactory");
3491            return;
3492        }
3493        if (DBG) log("unregisterNetworkFactory for " + nfi.name);
3494    }
3495
3496    /**
3497     * NetworkAgentInfo supporting a request by requestId.
3498     * These have already been vetted (their Capabilities satisfy the request)
3499     * and the are the highest scored network available.
3500     * the are keyed off the Requests requestId.
3501     */
3502    private final SparseArray<NetworkAgentInfo> mNetworkForRequestId =
3503            new SparseArray<NetworkAgentInfo>();
3504
3505    private final SparseArray<NetworkAgentInfo> mNetworkForNetId =
3506            new SparseArray<NetworkAgentInfo>();
3507
3508    // NetworkAgentInfo keyed off its connecting messenger
3509    // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays
3510    private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos =
3511            new HashMap<Messenger, NetworkAgentInfo>();
3512
3513    private final NetworkRequest mDefaultRequest;
3514
3515    private boolean isDefaultNetwork(NetworkAgentInfo nai) {
3516        return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai;
3517    }
3518
3519    public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo,
3520            LinkProperties linkProperties, NetworkCapabilities networkCapabilities,
3521            int currentScore, NetworkMisc networkMisc) {
3522        enforceConnectivityInternalPermission();
3523
3524        NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(),
3525            new NetworkInfo(networkInfo), new LinkProperties(linkProperties),
3526            new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler,
3527            new NetworkMisc(networkMisc));
3528        synchronized (this) {
3529            nai.networkMonitor.systemReady = mSystemReady;
3530        }
3531        if (DBG) log("registerNetworkAgent " + nai);
3532        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai));
3533    }
3534
3535    private void handleRegisterNetworkAgent(NetworkAgentInfo na) {
3536        if (VDBG) log("Got NetworkAgent Messenger");
3537        mNetworkAgentInfos.put(na.messenger, na);
3538        assignNextNetId(na);
3539        na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger);
3540        NetworkInfo networkInfo = na.networkInfo;
3541        na.networkInfo = null;
3542        updateNetworkInfo(na, networkInfo);
3543    }
3544
3545    private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) {
3546        LinkProperties newLp = networkAgent.linkProperties;
3547        int netId = networkAgent.network.netId;
3548
3549        // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before
3550        // we do anything else, make sure its LinkProperties are accurate.
3551        mClat.fixupLinkProperties(networkAgent, oldLp);
3552
3553        updateInterfaces(newLp, oldLp, netId);
3554        updateMtu(newLp, oldLp);
3555        // TODO - figure out what to do for clat
3556//        for (LinkProperties lp : newLp.getStackedLinks()) {
3557//            updateMtu(lp, null);
3558//        }
3559        updateTcpBufferSizes(networkAgent);
3560        final boolean flushDns = updateRoutes(newLp, oldLp, netId);
3561        updateDnses(newLp, oldLp, netId, flushDns);
3562        updateClat(newLp, oldLp, networkAgent);
3563        if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy());
3564    }
3565
3566    private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) {
3567        final boolean wasRunningClat = mClat.isRunningClat(na);
3568        final boolean shouldRunClat = Nat464Xlat.requiresClat(na);
3569
3570        if (!wasRunningClat && shouldRunClat) {
3571            // Start clatd. If it's already been started but is not running yet, this is a no-op.
3572            mClat.startClat(na);
3573        } else if (wasRunningClat && !shouldRunClat) {
3574            mClat.stopClat();
3575        }
3576    }
3577
3578    private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) {
3579        CompareResult<String> interfaceDiff = new CompareResult<String>();
3580        if (oldLp != null) {
3581            interfaceDiff = oldLp.compareAllInterfaceNames(newLp);
3582        } else if (newLp != null) {
3583            interfaceDiff.added = newLp.getAllInterfaceNames();
3584        }
3585        for (String iface : interfaceDiff.added) {
3586            try {
3587                if (DBG) log("Adding iface " + iface + " to network " + netId);
3588                mNetd.addInterfaceToNetwork(iface, netId);
3589            } catch (Exception e) {
3590                loge("Exception adding interface: " + e);
3591            }
3592        }
3593        for (String iface : interfaceDiff.removed) {
3594            try {
3595                if (DBG) log("Removing iface " + iface + " from network " + netId);
3596                mNetd.removeInterfaceFromNetwork(iface, netId);
3597            } catch (Exception e) {
3598                loge("Exception removing interface: " + e);
3599            }
3600        }
3601    }
3602
3603    /**
3604     * Have netd update routes from oldLp to newLp.
3605     * @return true if routes changed between oldLp and newLp
3606     */
3607    private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) {
3608        CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>();
3609        if (oldLp != null) {
3610            routeDiff = oldLp.compareAllRoutes(newLp);
3611        } else if (newLp != null) {
3612            routeDiff.added = newLp.getAllRoutes();
3613        }
3614
3615        // add routes before removing old in case it helps with continuous connectivity
3616
3617        // do this twice, adding non-nexthop routes first, then routes they are dependent on
3618        for (RouteInfo route : routeDiff.added) {
3619            if (route.hasGateway()) continue;
3620            if (DBG) log("Adding Route [" + route + "] to network " + netId);
3621            try {
3622                mNetd.addRoute(netId, route);
3623            } catch (Exception e) {
3624                if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) {
3625                    loge("Exception in addRoute for non-gateway: " + e);
3626                }
3627            }
3628        }
3629        for (RouteInfo route : routeDiff.added) {
3630            if (route.hasGateway() == false) continue;
3631            if (DBG) log("Adding Route [" + route + "] to network " + netId);
3632            try {
3633                mNetd.addRoute(netId, route);
3634            } catch (Exception e) {
3635                if ((route.getGateway() instanceof Inet4Address) || VDBG) {
3636                    loge("Exception in addRoute for gateway: " + e);
3637                }
3638            }
3639        }
3640
3641        for (RouteInfo route : routeDiff.removed) {
3642            if (DBG) log("Removing Route [" + route + "] from network " + netId);
3643            try {
3644                mNetd.removeRoute(netId, route);
3645            } catch (Exception e) {
3646                loge("Exception in removeRoute: " + e);
3647            }
3648        }
3649        return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty();
3650    }
3651    private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, boolean flush) {
3652        if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) {
3653            Collection<InetAddress> dnses = newLp.getDnsServers();
3654            if (dnses.size() == 0 && mDefaultDns != null) {
3655                dnses = new ArrayList();
3656                dnses.add(mDefaultDns);
3657                if (DBG) {
3658                    loge("no dns provided for netId " + netId + ", so using defaults");
3659                }
3660            }
3661            if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses);
3662            try {
3663                mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses),
3664                    newLp.getDomains());
3665            } catch (Exception e) {
3666                loge("Exception in setDnsServersForNetwork: " + e);
3667            }
3668            NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId);
3669            if (defaultNai != null && defaultNai.network.netId == netId) {
3670                setDefaultDnsSystemProperties(dnses);
3671            }
3672            flushVmDnsCache();
3673        } else if (flush) {
3674            try {
3675                mNetd.flushNetworkDnsCache(netId);
3676            } catch (Exception e) {
3677                loge("Exception in flushNetworkDnsCache: " + e);
3678            }
3679            flushVmDnsCache();
3680        }
3681    }
3682
3683    private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) {
3684        int last = 0;
3685        for (InetAddress dns : dnses) {
3686            ++last;
3687            String key = "net.dns" + last;
3688            String value = dns.getHostAddress();
3689            SystemProperties.set(key, value);
3690        }
3691        for (int i = last + 1; i <= mNumDnsEntries; ++i) {
3692            String key = "net.dns" + i;
3693            SystemProperties.set(key, "");
3694        }
3695        mNumDnsEntries = last;
3696    }
3697
3698
3699    private void updateCapabilities(NetworkAgentInfo networkAgent,
3700            NetworkCapabilities networkCapabilities) {
3701        // TODO - what else here?  Verify still satisfies everybody?
3702        // Check if satisfies somebody new?  call callbacks?
3703        synchronized (networkAgent) {
3704            networkAgent.networkCapabilities = networkCapabilities;
3705        }
3706    }
3707
3708    private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) {
3709        for (int i = 0; i < nai.networkRequests.size(); i++) {
3710            NetworkRequest nr = nai.networkRequests.valueAt(i);
3711            // Don't send listening requests to factories. b/17393458
3712            if (!isRequest(nr)) continue;
3713            sendUpdatedScoreToFactories(nr, nai.getCurrentScore());
3714        }
3715    }
3716
3717    private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) {
3718        if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString());
3719        for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
3720            nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0,
3721                    networkRequest);
3722        }
3723    }
3724
3725    private void callCallbackForRequest(NetworkRequestInfo nri,
3726            NetworkAgentInfo networkAgent, int notificationType) {
3727        if (nri.messenger == null) return;  // Default request has no msgr
3728        Object o;
3729        int a1 = 0;
3730        int a2 = 0;
3731        switch (notificationType) {
3732            case ConnectivityManager.CALLBACK_LOSING:
3733                a1 = 30 * 1000; // TODO - read this from NetworkMonitor
3734                // fall through
3735            case ConnectivityManager.CALLBACK_PRECHECK:
3736            case ConnectivityManager.CALLBACK_AVAILABLE:
3737            case ConnectivityManager.CALLBACK_LOST:
3738            case ConnectivityManager.CALLBACK_CAP_CHANGED:
3739            case ConnectivityManager.CALLBACK_IP_CHANGED: {
3740                o = new NetworkRequest(nri.request);
3741                a2 = networkAgent.network.netId;
3742                break;
3743            }
3744            case ConnectivityManager.CALLBACK_UNAVAIL:
3745            case ConnectivityManager.CALLBACK_RELEASED: {
3746                o = new NetworkRequest(nri.request);
3747                break;
3748            }
3749            default: {
3750                loge("Unknown notificationType " + notificationType);
3751                return;
3752            }
3753        }
3754        Message msg = Message.obtain();
3755        msg.arg1 = a1;
3756        msg.arg2 = a2;
3757        msg.obj = o;
3758        msg.what = notificationType;
3759        try {
3760            if (VDBG) {
3761                log("sending notification " + notifyTypeToName(notificationType) +
3762                        " for " + nri.request);
3763            }
3764            nri.messenger.send(msg);
3765        } catch (RemoteException e) {
3766            // may occur naturally in the race of binder death.
3767            loge("RemoteException caught trying to send a callback msg for " + nri.request);
3768        }
3769    }
3770
3771    private void teardownUnneededNetwork(NetworkAgentInfo nai) {
3772        for (int i = 0; i < nai.networkRequests.size(); i++) {
3773            NetworkRequest nr = nai.networkRequests.valueAt(i);
3774            // Ignore listening requests.
3775            if (!isRequest(nr)) continue;
3776            loge("Dead network still had at least " + nr);
3777            break;
3778        }
3779        nai.asyncChannel.disconnect();
3780    }
3781
3782    private void handleLingerComplete(NetworkAgentInfo oldNetwork) {
3783        if (oldNetwork == null) {
3784            loge("Unknown NetworkAgentInfo in handleLingerComplete");
3785            return;
3786        }
3787        if (DBG) log("handleLingerComplete for " + oldNetwork.name());
3788        teardownUnneededNetwork(oldNetwork);
3789    }
3790
3791    private void makeDefault(NetworkAgentInfo newNetwork) {
3792        if (DBG) log("Switching to new default network: " + newNetwork);
3793        mActiveDefaultNetwork = newNetwork.networkInfo.getType();
3794        setupDataActivityTracking(newNetwork);
3795        try {
3796            mNetd.setDefaultNetId(newNetwork.network.netId);
3797        } catch (Exception e) {
3798            loge("Exception setting default network :" + e);
3799        }
3800        handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy());
3801        updateTcpBufferSizes(newNetwork);
3802    }
3803
3804    // Handles a network appearing or improving its score.
3805    //
3806    // - Evaluates all current NetworkRequests that can be
3807    //   satisfied by newNetwork, and reassigns to newNetwork
3808    //   any such requests for which newNetwork is the best.
3809    //
3810    // - Lingers any Networks that as a result are no longer
3811    //   needed. A network is needed if it is the best network for
3812    //   one or more NetworkRequests, or if it is a VPN.
3813    //
3814    // - Tears down newNetwork if it just became validated
3815    //   (i.e. nascent==true) but turns out to be unneeded.
3816    //   Does not tear down newNetwork if it is unvalidated,
3817    //   because future validation may improve newNetwork's
3818    //   score enough that it is needed.
3819    //
3820    // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy,
3821    // it does not remove NetworkRequests that other Networks could better satisfy.
3822    // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}.
3823    // This function should be used when possible instead of {@code rematchAllNetworksAndRequests}
3824    // as it performs better by a factor of the number of Networks.
3825    //
3826    // @param nascent indicates if newNetwork just became validated, in which case it should be
3827    //               torn down if unneeded.  If nascent is false, no action is taken if newNetwork
3828    //               is found to be unneeded by this call.  Presumably, in this case, either:
3829    //               - newNetwork is unvalidated (and left alive), or
3830    //               - the NetworkRequests keeping newNetwork alive have been transitioned to
3831    //                 another higher scoring network by another call to rematchNetworkAndRequests()
3832    //                 and this other call also lingered newNetwork.
3833    private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, boolean nascent) {
3834        if (!newNetwork.created) loge("ERROR: uncreated network being rematched.");
3835        if (nascent && !newNetwork.validated) loge("ERROR: nascent network not validated.");
3836        boolean keep = newNetwork.isVPN();
3837        boolean isNewDefault = false;
3838        if (DBG) log("rematching " + newNetwork.name());
3839        // Find and migrate to this Network any NetworkRequests for
3840        // which this network is now the best.
3841        ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>();
3842        if (VDBG) log(" network has: " + newNetwork.networkCapabilities);
3843        for (NetworkRequestInfo nri : mNetworkRequests.values()) {
3844            NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId);
3845            if (newNetwork == currentNetwork) {
3846                if (DBG) {
3847                    log("Network " + newNetwork.name() + " was already satisfying" +
3848                            " request " + nri.request.requestId + ". No change.");
3849                }
3850                keep = true;
3851                continue;
3852            }
3853
3854            // check if it satisfies the NetworkCapabilities
3855            if (VDBG) log("  checking if request is satisfied: " + nri.request);
3856            if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities(
3857                    newNetwork.networkCapabilities)) {
3858                if (!nri.isRequest) {
3859                    // This is not a request, it's a callback listener.
3860                    // Add it to newNetwork regardless of score.
3861                    newNetwork.addRequest(nri.request);
3862                    continue;
3863                }
3864
3865                // next check if it's better than any current network we're using for
3866                // this request
3867                if (VDBG) {
3868                    log("currentScore = " +
3869                            (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) +
3870                            ", newScore = " + newNetwork.getCurrentScore());
3871                }
3872                if (currentNetwork == null ||
3873                        currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) {
3874                    if (currentNetwork != null) {
3875                        if (DBG) log("   accepting network in place of " + currentNetwork.name());
3876                        currentNetwork.networkRequests.remove(nri.request.requestId);
3877                        currentNetwork.networkLingered.add(nri.request);
3878                        affectedNetworks.add(currentNetwork);
3879                    } else {
3880                        if (DBG) log("   accepting network in place of null");
3881                    }
3882                    mNetworkForRequestId.put(nri.request.requestId, newNetwork);
3883                    newNetwork.addRequest(nri.request);
3884                    if (nri.isRequest && nri.request.legacyType != TYPE_NONE) {
3885                        mLegacyTypeTracker.add(nri.request.legacyType, newNetwork);
3886                    }
3887                    keep = true;
3888                    // Tell NetworkFactories about the new score, so they can stop
3889                    // trying to connect if they know they cannot match it.
3890                    // TODO - this could get expensive if we have alot of requests for this
3891                    // network.  Think about if there is a way to reduce this.  Push
3892                    // netid->request mapping to each factory?
3893                    sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore());
3894                    if (mDefaultRequest.requestId == nri.request.requestId) {
3895                        isNewDefault = true;
3896                        // TODO: Remove following line.  It's redundant with makeDefault call.
3897                        mActiveDefaultNetwork = newNetwork.networkInfo.getType();
3898                        if (newNetwork.linkProperties != null) {
3899                            updateTcpBufferSizes(newNetwork);
3900                            setDefaultDnsSystemProperties(
3901                                    newNetwork.linkProperties.getDnsServers());
3902                        } else {
3903                            setDefaultDnsSystemProperties(new ArrayList<InetAddress>());
3904                        }
3905                        // Maintain the illusion: since the legacy API only
3906                        // understands one network at a time, we must pretend
3907                        // that the current default network disconnected before
3908                        // the new one connected.
3909                        if (currentNetwork != null) {
3910                            mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(),
3911                                                      currentNetwork);
3912                        }
3913                        mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0;
3914                        mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork);
3915                    }
3916                }
3917            }
3918        }
3919        // Linger any networks that are no longer needed.
3920        for (NetworkAgentInfo nai : affectedNetworks) {
3921            boolean teardown = !nai.isVPN() && nai.validated;
3922            for (int i = 0; i < nai.networkRequests.size() && teardown; i++) {
3923                NetworkRequest nr = nai.networkRequests.valueAt(i);
3924                try {
3925                if (isRequest(nr)) {
3926                    teardown = false;
3927                }
3928                } catch (Exception e) {
3929                    loge("Request " + nr + " not found in mNetworkRequests.");
3930                    loge("  it came from request list  of " + nai.name());
3931                }
3932            }
3933            if (teardown) {
3934                nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER);
3935                notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING);
3936            } else {
3937                // not going to linger, so kill the list of linger networks..  only
3938                // notify them of linger if it happens as the result of gaining another,
3939                // but if they transition and old network stays up, don't tell them of linger
3940                // or very delayed loss
3941                nai.networkLingered.clear();
3942                if (VDBG) log("Lingered for " + nai.name() + " cleared");
3943            }
3944        }
3945        if (keep) {
3946            if (isNewDefault) {
3947                // Notify system services that this network is up.
3948                makeDefault(newNetwork);
3949                synchronized (ConnectivityService.this) {
3950                    // have a new default network, release the transition wakelock in
3951                    // a second if it's held.  The second pause is to allow apps
3952                    // to reconnect over the new network
3953                    if (mNetTransitionWakeLock.isHeld()) {
3954                        mHandler.sendMessageDelayed(mHandler.obtainMessage(
3955                                EVENT_CLEAR_NET_TRANSITION_WAKELOCK,
3956                                mNetTransitionWakeLockSerialNumber, 0),
3957                                1000);
3958                    }
3959                }
3960            }
3961
3962            // Notify battery stats service about this network, both the normal
3963            // interface and any stacked links.
3964            // TODO: Avoid redoing this; this must only be done once when a network comes online.
3965            try {
3966                final IBatteryStats bs = BatteryStatsService.getService();
3967                final int type = newNetwork.networkInfo.getType();
3968
3969                final String baseIface = newNetwork.linkProperties.getInterfaceName();
3970                bs.noteNetworkInterfaceType(baseIface, type);
3971                for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) {
3972                    final String stackedIface = stacked.getInterfaceName();
3973                    bs.noteNetworkInterfaceType(stackedIface, type);
3974                    NetworkStatsFactory.noteStackedIface(stackedIface, baseIface);
3975                }
3976            } catch (RemoteException ignored) {
3977            }
3978
3979            notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE);
3980        } else if (nascent) {
3981            // Only tear down newly validated networks here.  Leave unvalidated to either become
3982            // validated (and get evaluated against peers, one losing here) or
3983            // NetworkMonitor reports a bad network and we tear it down then.
3984            // Networks that have been up for a while and are validated should be torn down via
3985            // the lingering process so communication on that network is given time to wrap up.
3986            // TODO: Could teardown unvalidated networks when their NetworkCapabilities
3987            // satisfy no NetworkRequests.
3988            if (DBG) log("Validated network turns out to be unwanted.  Tear it down.");
3989            teardownUnneededNetwork(newNetwork);
3990        }
3991    }
3992
3993    // Attempt to rematch all Networks with NetworkRequests.  This may result in Networks
3994    // being disconnected.
3995    // If only one Network's score or capabilities have been modified since the last time
3996    // this function was called, pass this Network in via the "changed" arugment, otherwise
3997    // pass null.
3998    // If only one Network has been changed but its NetworkCapabilities have not changed,
3999    // pass in the Network's score (from getCurrentScore()) prior to the change via
4000    // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null.
4001    private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) {
4002        // TODO: This may get slow.  The "changed" parameter is provided for future optimization
4003        // to avoid the slowness.  It is not simply enough to process just "changed", for
4004        // example in the case where "changed"'s score decreases and another network should begin
4005        // satifying a NetworkRequest that "changed" currently satisfies.
4006
4007        // Optimization: Only reprocess "changed" if its score improved.  This is safe because it
4008        // can only add more NetworkRequests satisfied by "changed", and this is exactly what
4009        // rematchNetworkAndRequests() handles.
4010        if (changed != null && oldScore < changed.getCurrentScore()) {
4011            rematchNetworkAndRequests(changed, false);
4012        } else {
4013            for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
4014                rematchNetworkAndRequests(nai, false);
4015            }
4016        }
4017    }
4018
4019    private void updateInetCondition(NetworkAgentInfo nai, boolean valid) {
4020        // Don't bother updating until we've graduated to validated at least once.
4021        if (!nai.validated) return;
4022        // For now only update icons for default connection.
4023        // TODO: Update WiFi and cellular icons separately. b/17237507
4024        if (!isDefaultNetwork(nai)) return;
4025
4026        int newInetCondition = valid ? 100 : 0;
4027        // Don't repeat publish.
4028        if (newInetCondition == mDefaultInetConditionPublished) return;
4029
4030        mDefaultInetConditionPublished = newInetCondition;
4031        sendInetConditionBroadcast(nai.networkInfo);
4032    }
4033
4034    private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) {
4035        NetworkInfo.State state = newInfo.getState();
4036        NetworkInfo oldInfo = null;
4037        synchronized (networkAgent) {
4038            oldInfo = networkAgent.networkInfo;
4039            networkAgent.networkInfo = newInfo;
4040        }
4041        if (networkAgent.isVPN() && mLockdownTracker != null) {
4042            mLockdownTracker.onVpnStateChanged(newInfo);
4043        }
4044
4045        if (oldInfo != null && oldInfo.getState() == state) {
4046            if (VDBG) log("ignoring duplicate network state non-change");
4047            return;
4048        }
4049        if (DBG) {
4050            log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " +
4051                    (oldInfo == null ? "null" : oldInfo.getState()) +
4052                    " to " + state);
4053        }
4054
4055        if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) {
4056            try {
4057                // This should never fail.  Specifying an already in use NetID will cause failure.
4058                if (networkAgent.isVPN()) {
4059                    mNetd.createVirtualNetwork(networkAgent.network.netId,
4060                            !networkAgent.linkProperties.getDnsServers().isEmpty(),
4061                            (networkAgent.networkMisc == null ||
4062                                !networkAgent.networkMisc.allowBypass));
4063                } else {
4064                    mNetd.createPhysicalNetwork(networkAgent.network.netId);
4065                }
4066            } catch (Exception e) {
4067                loge("Error creating network " + networkAgent.network.netId + ": "
4068                        + e.getMessage());
4069                return;
4070            }
4071            networkAgent.created = true;
4072            updateLinkProperties(networkAgent, null);
4073            notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK);
4074            networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED);
4075            if (networkAgent.isVPN()) {
4076                // Temporarily disable the default proxy (not global).
4077                synchronized (mProxyLock) {
4078                    if (!mDefaultProxyDisabled) {
4079                        mDefaultProxyDisabled = true;
4080                        if (mGlobalProxy == null && mDefaultProxy != null) {
4081                            sendProxyBroadcast(null);
4082                        }
4083                    }
4084                }
4085                // TODO: support proxy per network.
4086            }
4087            // Consider network even though it is not yet validated.
4088            rematchNetworkAndRequests(networkAgent, false);
4089        } else if (state == NetworkInfo.State.DISCONNECTED ||
4090                state == NetworkInfo.State.SUSPENDED) {
4091            networkAgent.asyncChannel.disconnect();
4092            if (networkAgent.isVPN()) {
4093                synchronized (mProxyLock) {
4094                    if (mDefaultProxyDisabled) {
4095                        mDefaultProxyDisabled = false;
4096                        if (mGlobalProxy == null && mDefaultProxy != null) {
4097                            sendProxyBroadcast(mDefaultProxy);
4098                        }
4099                    }
4100                }
4101            }
4102        }
4103    }
4104
4105    private void updateNetworkScore(NetworkAgentInfo nai, int score) {
4106        if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score);
4107        if (score < 0) {
4108            loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score +
4109                    ").  Bumping score to min of 0");
4110            score = 0;
4111        }
4112
4113        final int oldScore = nai.getCurrentScore();
4114        nai.setCurrentScore(score);
4115
4116        if (nai.created) rematchAllNetworksAndRequests(nai, oldScore);
4117
4118        sendUpdatedScoreToFactories(nai);
4119    }
4120
4121    // notify only this one new request of the current state
4122    protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) {
4123        int notifyType = ConnectivityManager.CALLBACK_AVAILABLE;
4124        // TODO - read state from monitor to decide what to send.
4125//        if (nai.networkMonitor.isLingering()) {
4126//            notifyType = NetworkCallbacks.LOSING;
4127//        } else if (nai.networkMonitor.isEvaluating()) {
4128//            notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType);
4129//        }
4130        callCallbackForRequest(nri, nai, notifyType);
4131    }
4132
4133    private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) {
4134        // The NetworkInfo we actually send out has no bearing on the real
4135        // state of affairs. For example, if the default connection is mobile,
4136        // and a request for HIPRI has just gone away, we need to pretend that
4137        // HIPRI has just disconnected. So we need to set the type to HIPRI and
4138        // the state to DISCONNECTED, even though the network is of type MOBILE
4139        // and is still connected.
4140        NetworkInfo info = new NetworkInfo(nai.networkInfo);
4141        info.setType(type);
4142        if (connected) {
4143            info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo());
4144            sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay());
4145        } else {
4146            info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo());
4147            Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION);
4148            intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info);
4149            intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType());
4150            if (info.isFailover()) {
4151                intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true);
4152                nai.networkInfo.setFailover(false);
4153            }
4154            if (info.getReason() != null) {
4155                intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason());
4156            }
4157            if (info.getExtraInfo() != null) {
4158                intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo());
4159            }
4160            NetworkAgentInfo newDefaultAgent = null;
4161            if (nai.networkRequests.get(mDefaultRequest.requestId) != null) {
4162                newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId);
4163                if (newDefaultAgent != null) {
4164                    intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO,
4165                            newDefaultAgent.networkInfo);
4166                } else {
4167                    intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true);
4168                }
4169            }
4170            intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION,
4171                    mDefaultInetConditionPublished);
4172            final Intent immediateIntent = new Intent(intent);
4173            immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE);
4174            sendStickyBroadcast(immediateIntent);
4175            sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay());
4176            if (newDefaultAgent != null) {
4177                sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo,
4178                getConnectivityChangeDelay());
4179            }
4180        }
4181    }
4182
4183    protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) {
4184        if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name());
4185        for (int i = 0; i < networkAgent.networkRequests.size(); i++) {
4186            NetworkRequest nr = networkAgent.networkRequests.valueAt(i);
4187            NetworkRequestInfo nri = mNetworkRequests.get(nr);
4188            if (VDBG) log(" sending notification for " + nr);
4189            callCallbackForRequest(nri, networkAgent, notifyType);
4190        }
4191    }
4192
4193    private String notifyTypeToName(int notifyType) {
4194        switch (notifyType) {
4195            case ConnectivityManager.CALLBACK_PRECHECK:    return "PRECHECK";
4196            case ConnectivityManager.CALLBACK_AVAILABLE:   return "AVAILABLE";
4197            case ConnectivityManager.CALLBACK_LOSING:      return "LOSING";
4198            case ConnectivityManager.CALLBACK_LOST:        return "LOST";
4199            case ConnectivityManager.CALLBACK_UNAVAIL:     return "UNAVAILABLE";
4200            case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED";
4201            case ConnectivityManager.CALLBACK_IP_CHANGED:  return "IP_CHANGED";
4202            case ConnectivityManager.CALLBACK_RELEASED:    return "RELEASED";
4203        }
4204        return "UNKNOWN";
4205    }
4206
4207    private LinkProperties getLinkPropertiesForTypeInternal(int networkType) {
4208        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
4209        if (nai != null) {
4210            synchronized (nai) {
4211                return new LinkProperties(nai.linkProperties);
4212            }
4213        }
4214        return new LinkProperties();
4215    }
4216
4217    private NetworkInfo getNetworkInfoForType(int networkType) {
4218        if (!mLegacyTypeTracker.isTypeSupported(networkType))
4219            return null;
4220
4221        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
4222        if (nai != null) {
4223            NetworkInfo result = new NetworkInfo(nai.networkInfo);
4224            result.setType(networkType);
4225            return result;
4226        } else {
4227            NetworkInfo result = new NetworkInfo(
4228                    networkType, 0, ConnectivityManager.getNetworkTypeName(networkType), "");
4229            result.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null);
4230            return result;
4231        }
4232    }
4233
4234    private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) {
4235        NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
4236        if (nai != null) {
4237            synchronized (nai) {
4238                return new NetworkCapabilities(nai.networkCapabilities);
4239            }
4240        }
4241        return new NetworkCapabilities();
4242    }
4243
4244    @Override
4245    public boolean addVpnAddress(String address, int prefixLength) {
4246        throwIfLockdownEnabled();
4247        int user = UserHandle.getUserId(Binder.getCallingUid());
4248        synchronized (mVpns) {
4249            return mVpns.get(user).addAddress(address, prefixLength);
4250        }
4251    }
4252
4253    @Override
4254    public boolean removeVpnAddress(String address, int prefixLength) {
4255        throwIfLockdownEnabled();
4256        int user = UserHandle.getUserId(Binder.getCallingUid());
4257        synchronized (mVpns) {
4258            return mVpns.get(user).removeAddress(address, prefixLength);
4259        }
4260    }
4261}
4262