Add checkMobileProvisioning to ConnectivityService.

Bug: 9279964
Change-Id: I42c326a21e05aa301e9d974ed9ac1d59472780ec

core/java/android/net/ConnectivityManager.java

@@ -25,6 +25,7 @@ import android.os.Binder;
 import android.os.Build.VERSION_CODES;
 import android.os.Messenger;
 import android.os.RemoteException;
+import android.os.ResultReceiver;
 import android.provider.Settings;
 
 import java.net.InetAddress;
@@ -1294,4 +1295,67 @@ public class ConnectivityManager {
         } catch (RemoteException e) {
         }
     }
+
+    /**
+     * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE)
+     */
+
+    /**
+     * No connection was possible to the network.
+     * {@hide}
+     */
+    public static final int CMP_RESULT_CODE_NO_CONNECTION = 0;
+
+    /**
+     * A connection was made to the internet, all is well.
+     * {@hide}
+     */
+    public static final int CMP_RESULT_CODE_CONNECTABLE = 1;
+
+    /**
+     * A connection was made but there was a redirection, we appear to be in walled garden.
+     * This is an indication of a warm sim on a mobile network.
+     * {@hide}
+     */
+    public static final int CMP_RESULT_CODE_REDIRECTED = 2;
+
+    /**
+     * A connection was made but no dns server was available to resolve a name to address.
+     * This is an indication of a warm sim on a mobile network.
+     *
+     * {@hide}
+     */
+    public static final int CMP_RESULT_CODE_NO_DNS = 3;
+
+    /**
+     * A connection was made but could not open a TCP connection.
+     * This is an indication of a warm sim on a mobile network.
+     * {@hide}
+     */
+    public static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 4;
+
+    /**
+     * Check mobile provisioning. The resultCode passed to
+     * onReceiveResult will be one of the CMP_RESULT_CODE_xxxx values above.
+     * This may take a minute or more to complete.
+     *
+     * @param sendNotificaiton, when true a notification will be sent to user.
+     * @param suggestedTimeOutMs, timeout in milliseconds
+     * @param resultReceiver needs to  be supplied to receive the result
+     *
+     * @return time out that will be used, maybe less that suggestedTimeOutMs
+     * -1 if an error.
+     *
+     * {@hide}
+     */
+    public int checkMobileProvisioning(boolean sendNotification, int suggestedTimeOutMs,
+            ResultReceiver resultReceiver) {
+        int timeOutMs = -1;
+        try {
+            timeOutMs = mService.checkMobileProvisioning(sendNotification, suggestedTimeOutMs,
+                    resultReceiver);
+        } catch (RemoteException e) {
+        }
+        return timeOutMs;
+    }
 }

core/java/android/net/IConnectivityManager.aidl

@@ -24,6 +24,7 @@ import android.net.ProxyProperties;
 import android.os.IBinder;
 import android.os.Messenger;
 import android.os.ParcelFileDescriptor;
+import android.os.ResultReceiver;
 
 import com.android.internal.net.LegacyVpnInfo;
 import com.android.internal.net.VpnConfig;
@@ -131,4 +132,6 @@ interface IConnectivityManager
     void supplyMessenger(int networkType, in Messenger messenger);
 
     int findConnectionTypeForIface(in String iface);
+
+    int checkMobileProvisioning(boolean sendNotification, int suggestedTimeOutMs, in ResultReceiver resultReceiver);
 }

services/java/com/android/server/ConnectivityService.java

@@ -31,6 +31,9 @@ import static android.net.ConnectivityManager.isNetworkTypeValid;
 import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL;
 import static android.net.NetworkPolicyManager.RULE_REJECT_METERED;
 
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
 import android.bluetooth.BluetoothTetheringDataTracker;
 import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
@@ -52,11 +55,13 @@ import android.net.INetworkPolicyManager;
 import android.net.INetworkStatsService;
 import android.net.LinkAddress;
 import android.net.LinkProperties;
+import android.net.Uri;
 import android.net.LinkProperties.CompareResult;
 import android.net.MobileDataStateTracker;
 import android.net.NetworkConfig;
 import android.net.NetworkInfo;
 import android.net.NetworkInfo.DetailedState;
+import android.net.NetworkInfo.State;
 import android.net.NetworkQuotaInfo;
 import android.net.NetworkState;
 import android.net.NetworkStateTracker;
@@ -66,6 +71,7 @@ import android.net.ProxyProperties;
 import android.net.RouteInfo;
 import android.net.wifi.WifiStateTracker;
 import android.net.wimax.WimaxManagerConstants;
+import android.os.AsyncTask;
 import android.os.Binder;
 import android.os.FileUtils;
 import android.os.Handler;
@@ -79,6 +85,7 @@ import android.os.ParcelFileDescriptor;
 import android.os.PowerManager;
 import android.os.Process;
 import android.os.RemoteException;
+import android.os.ResultReceiver;
 import android.os.ServiceManager;
 import android.os.SystemClock;
 import android.os.SystemProperties;
@@ -86,13 +93,16 @@ import android.os.UserHandle;
 import android.provider.Settings;
 import android.security.Credentials;
 import android.security.KeyStore;
+import android.telephony.TelephonyManager;
 import android.text.TextUtils;
 import android.util.Slog;
 import android.util.SparseIntArray;
 
+import com.android.internal.R;
 import com.android.internal.net.LegacyVpnInfo;
 import com.android.internal.net.VpnConfig;
 import com.android.internal.net.VpnProfile;
+import com.android.internal.telephony.DctConstants;
 import com.android.internal.telephony.Phone;
 import com.android.internal.telephony.PhoneConstants;
 import com.android.internal.util.IndentingPrintWriter;
@@ -111,9 +121,11 @@ import java.io.FileDescriptor;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.lang.reflect.Constructor;
+import java.net.HttpURLConnection;
 import java.net.Inet4Address;
 import java.net.Inet6Address;
 import java.net.InetAddress;
+import java.net.URL;
 import java.net.UnknownHostException;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -121,6 +133,8 @@ import java.util.Collection;
 import java.util.GregorianCalendar;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Random;
+import java.util.concurrent.atomic.AtomicInteger;
 
 /**
  * @hide
@@ -141,6 +155,12 @@ public class ConnectivityService extends IConnectivityManager.Stub {
     private static final String NETWORK_RESTORE_DELAY_PROP_NAME =
             "android.telephony.apn-restore";
 
+    // Default value if FAIL_FAST_TIME_MS is not set
+    private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000;
+    // system property that can override DEFAULT_FAIL_FAST_TIME_MS
+    private static final String FAIL_FAST_TIME_MS =
+            "persist.radio.fail_fast_time_ms";
+
     // used in recursive route setting to add gateways for the host for which
     // a host route was requested.
     private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10;
@@ -292,6 +312,11 @@ public class ConnectivityService extends IConnectivityManager.Stub {
 
     private static final int EVENT_VPN_STATE_CHANGED = 14;
 
+    /**
+     * Used internally to disable fail fast of mobile data
+     */
+    private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 15;
+
     /** Handler used for internal events. */
     private InternalHandler mHandler;
     /** Handler used for incoming {@link NetworkStateTracker} events. */
@@ -346,6 +371,10 @@ public class ConnectivityService extends IConnectivityManager.Stub {
     // the set of network types that can only be enabled by system/sig apps
     List mProtectedNetworks;
 
+    private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0);
+
+    TelephonyManager mTelephonyManager;
+
     public ConnectivityService(Context context, INetworkManagementService netd,
             INetworkStatsService statsService, INetworkPolicyManager policyManager) {
         // Currently, omitting a NetworkFactory will create one internally
@@ -394,6 +423,7 @@ public class ConnectivityService extends IConnectivityManager.Stub {
         mNetd = checkNotNull(netManager, "missing INetworkManagementService");
         mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager");
         mKeyStore = KeyStore.getInstance();
+        mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);
 
         try {
             mPolicyManager.registerListener(mPolicyListener);
@@ -1408,8 +1438,12 @@ public class ConnectivityService extends IConnectivityManager.Stub {
                 netState != DetailedState.CAPTIVE_PORTAL_CHECK) ||
                 tracker.isTeardownRequested()) {
             if (VDBG) {
-                log("requestRouteToHostAddress on down network " +
+                log("requestRouteToHostAddress on down network "
-                           "(" + networkType + ") - dropped");
+                        + "(" + networkType + ") - dropped"
+                        + " tracker=" + tracker
+                        + " netState=" + netState
+                        + " isTeardownRequested="
+                            + ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null"));
             }
             return false;
         }
@@ -1417,12 +1451,15 @@ public class ConnectivityService extends IConnectivityManager.Stub {
         try {
             InetAddress addr = InetAddress.getByAddress(hostAddress);
             LinkProperties lp = tracker.getLinkProperties();
-            return addRouteToAddress(lp, addr);
+            boolean ok = addRouteToAddress(lp, addr);
+            if (DBG) log("requestRouteToHostAddress ok=" + ok);
+            return ok;
         } catch (UnknownHostException e) {
             if (DBG) log("requestRouteToHostAddress got " + e.toString());
         } finally {
             Binder.restoreCallingIdentity(token);
         }
+        if (DBG) log("requestRouteToHostAddress X bottom return false");
         return false;
     }
 
@@ -2824,6 +2861,19 @@ public class ConnectivityService extends IConnectivityManager.Stub {
                     }
                     break;
                 }
+                case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: {
+                    int tag = mEnableFailFastMobileDataTag.get();
+                    if (msg.arg1 == tag) {
+                        MobileDataStateTracker mobileDst =
+                            (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE];
+                        if (mobileDst != null) {
+                            mobileDst.setEnableFailFastMobileData(msg.arg2);
+                        }
+                    } else {
+                        log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1
+                                + " != tag:" + tag);
+                    }
+                }
             }
         }
     }
@@ -3472,4 +3522,460 @@ public class ConnectivityService extends IConnectivityManager.Stub {
         }
         return ConnectivityManager.TYPE_NONE;
     }
+
+    /**
+     * Have mobile data fail fast if enabled.
+     *
+     * @param enabled DctConstants.ENABLED/DISABLED
+     */
+    private void setEnableFailFastMobileData(int enabled) {
+        int tag;
+
+        if (enabled == DctConstants.ENABLED) {
+            tag = mEnableFailFastMobileDataTag.incrementAndGet();
+        } else {
+            tag = mEnableFailFastMobileDataTag.get();
+        }
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag,
+                         enabled));
+    }
+
+    @Override
+    public int checkMobileProvisioning(boolean sendNotification, int suggestedTimeOutMs,
+            final ResultReceiver resultReceiver) {
+        log("checkMobileProvisioning: E sendNotification=" + sendNotification
+                + " suggestedTimeOutMs=" + suggestedTimeOutMs
+                + " resultReceiver=" + resultReceiver);
+        enforceChangePermission();
+
+        int timeOutMs = suggestedTimeOutMs;
+        if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) {
+            timeOutMs = CheckMp.MAX_TIMEOUT_MS;
+        }
+
+        final long token = Binder.clearCallingIdentity();
+        try {
+            CheckMp checkMp = new CheckMp(mContext, this);
+            CheckMp.CallBack cb = new CheckMp.CallBack() {
+                @Override
+                void onComplete(Integer result) {
+                    log("CheckMp.onComplete: result=" + result);
+                    if (resultReceiver != null) {
+                        log("CheckMp.onComplete: send result");
+                        resultReceiver.send(result, null);
+                    }
+                    NetworkInfo ni =
+                            mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo();
+                    switch(result) {
+                        case ConnectivityManager.CMP_RESULT_CODE_CONNECTABLE:
+                        case ConnectivityManager.CMP_RESULT_CODE_NO_CONNECTION: {
+                            log("CheckMp.onComplete: ignore, connected or no connection");
+                            break;
+                        }
+                        case ConnectivityManager.CMP_RESULT_CODE_REDIRECTED: {
+                            log("CheckMp.onComplete: warm sim");
+                            String url = getProvisioningUrl();
+                            if (TextUtils.isEmpty(url)) {
+                                url = mContext.getResources()
+                                        .getString(R.string.mobile_redirected_provisioning_url);
+                            }
+                            if (TextUtils.isEmpty(url) == false) {
+                                log("CheckMp.onComplete: warm sim (redirected), url=" + url);
+                                setNotificationVisible(true, ni, url);
+                            } else {
+                                log("CheckMp.onComplete: warm sim (redirected), no url");
+                            }
+                            break;
+                        }
+                        case ConnectivityManager.CMP_RESULT_CODE_NO_DNS:
+                        case ConnectivityManager.CMP_RESULT_CODE_NO_TCP_CONNECTION: {
+                            String url = getProvisioningUrl();
+                            if (TextUtils.isEmpty(url) == false) {
+                                log("CheckMp.onComplete: warm sim (no dns/tcp), url=" + url);
+                                setNotificationVisible(true, ni, url);
+                            } else {
+                                log("CheckMp.onComplete: warm sim (no dns/tcp), no url");
+                            }
+                            break;
+                        }
+                        default: {
+                            loge("CheckMp.onComplete: ignore unexpected result=" + result);
+                            break;
+                        }
+                    }
+                }
+            };
+            CheckMp.Params params =
+                    new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb);
+            log("checkMobileProvisioning: params=" + params);
+            setNotificationVisible(false, null, null);
+            checkMp.execute(params);
+        } finally {
+            Binder.restoreCallingIdentity(token);
+            log("checkMobileProvisioning: X");
+        }
+        return timeOutMs;
+    }
+
+    static class CheckMp extends
+            AsyncTask<CheckMp.Params, Void, Integer> {
+        private static final String CHECKMP_TAG = "CheckMp";
+        public static final int MAX_TIMEOUT_MS =  60000;
+        private static final int SOCKET_TIMEOUT_MS = 5000;
+        private Context mContext;
+        private ConnectivityService mCs;
+        private TelephonyManager mTm;
+        private Params mParams;
+
+        /**
+         * Parameters for AsyncTask.execute
+         */
+        static class Params {
+            private String mUrl;
+            private long mTimeOutMs;
+            private CallBack mCb;
+
+            Params(String url, long timeOutMs, CallBack cb) {
+                mUrl = url;
+                mTimeOutMs = timeOutMs;
+                mCb = cb;
+            }
+
+            @Override
+            public String toString() {
+                return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}";
+            }
+        }
+
+        /**
+         * The call back object passed in Params. onComplete will be called
+         * on the main thread.
+         */
+        abstract static class CallBack {
+            // Called on the main thread.
+            abstract void onComplete(Integer result);
+        }
+
+        public CheckMp(Context context, ConnectivityService cs) {
+            mContext = context;
+            mCs = cs;
+
+            // Setup access to TelephonyService we'll be using.
+            mTm = (TelephonyManager) mContext.getSystemService(
+                    Context.TELEPHONY_SERVICE);
+        }
+
+        /**
+         * Get the default url to use for the test.
+         */
+        public String getDefaultUrl() {
+            // See http://go/clientsdns for usage approval
+            String server = Settings.Global.getString(mContext.getContentResolver(),
+                    Settings.Global.CAPTIVE_PORTAL_SERVER);
+            if (server == null) {
+                server = "clients3.google.com";
+            }
+            return "http://" + server + "/generate_204";
+        }
+
+        /**
+         * Detect if its possible to connect to the http url. DNS based detection techniques
+         * do not work at all hotspots. The best way to check is to perform a request to
+         * a known address that fetches the data we expect.
+         */
+        private synchronized Integer isMobileOk(Params params) {
+            Integer result = ConnectivityManager.CMP_RESULT_CODE_NO_CONNECTION;
+            Uri orgUri = Uri.parse(params.mUrl);
+            Random rand = new Random();
+            mParams = params;
+
+            try {
+                if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) {
+                    log("isMobileOk: not mobile capable");
+                    result = ConnectivityManager.CMP_RESULT_CODE_NO_CONNECTION;
+                    return result;
+                }
+
+                // Enable fail fast as we'll do retries here and use a
+                // hipri connection so the default connection stays active.
+                log("isMobileOk: start hipri url=" + params.mUrl);
+                mCs.setEnableFailFastMobileData(DctConstants.ENABLED);
+                mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
+                        Phone.FEATURE_ENABLE_HIPRI, new Binder());
+
+                // Continue trying to connect until time has run out
+                long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs;
+                while(SystemClock.elapsedRealtime() < endTime) {
+                    try {
+                        // Wait for hipri to connect.
+                        // TODO: Don't poll and handle situation where hipri fails
+                        // because default is retrying. See b/9569540
+                        NetworkInfo.State state = mCs
+                                .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState();
+                        if (state != NetworkInfo.State.CONNECTED) {
+                            log("isMobileOk: not connected ni=" +
+                                    mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI));
+                            sleep(1);
+                            result = ConnectivityManager.CMP_RESULT_CODE_NO_CONNECTION;
+                            continue;
+                        }
+
+                        // Get of the addresses associated with the url host. We need to use the
+                        // address otherwise HttpURLConnection object will use the name to get
+                        // the addresses and is will try every address but that will bypass the
+                        // route to host we setup and the connection could succeed as the default
+                        // interface might be connected to the internet via wifi or other interface.
+                        InetAddress[] addresses;
+                        try {
+                            addresses = InetAddress.getAllByName(orgUri.getHost());
+                        } catch (UnknownHostException e) {
+                            log("isMobileOk: UnknownHostException");
+                            result = ConnectivityManager.CMP_RESULT_CODE_NO_DNS;
+                            return result;
+                        }
+                        log("isMobileOk: addresses=" + inetAddressesToString(addresses));
+
+                        // Get the type of addresses supported by this link
+                        LinkProperties lp = mCs.getLinkProperties(
+                                ConnectivityManager.TYPE_MOBILE_HIPRI);
+                        boolean linkHasIpv4 = hasIPv4Address(lp);
+                        boolean linkHasIpv6 = hasIPv6Address(lp);
+                        log("isMobileOk: linkHasIpv4=" + linkHasIpv4
+                                + " linkHasIpv6=" + linkHasIpv6);
+
+                        // Loop through at most 3 valid addresses or all of the address or until
+                        // we run out of time
+                        int loops = Math.min(3, addresses.length);
+                        for(int validAddr=0, addrTried=0;
+                                    (validAddr < loops) && (addrTried < addresses.length)
+                                      && (SystemClock.elapsedRealtime() < endTime);
+                                addrTried ++) {
+
+                            // Choose the address at random but make sure its type is supported
+                            InetAddress hostAddr = addresses[rand.nextInt(addresses.length)];
+                            if (((hostAddr instanceof Inet4Address) && linkHasIpv4)
+                                    || ((hostAddr instanceof Inet6Address) && linkHasIpv6)) {
+                                // Valid address, so use it
+                                validAddr += 1;
+                            } else {
+                                // Invalid address so try next address
+                                continue;
+                            }
+
+                            // Make a route to host so we check the specific interface.
+                            if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI,
+                                    hostAddr.getAddress())) {
+                                // Wait a short time to be sure the route is established ??
+                                log("isMobileOk:"
+                                        + " wait to establish route to hostAddr=" + hostAddr);
+                                sleep(3);
+                            } else {
+                                log("isMobileOk:"
+                                        + " could not establish route to hostAddr=" + hostAddr);
+                                continue;
+                            }
+
+                            // Rewrite the url to have numeric address to use the specific route.
+                            // I also set the "Connection" to "Close" as by default "Keep-Alive"
+                            // is used which is useless in this case.
+                            URL newUrl = new URL(orgUri.getScheme() + "://"
+                                    + hostAddr.getHostAddress() + orgUri.getPath());
+                            log("isMobileOk: newUrl=" + newUrl);
+
+                            HttpURLConnection urlConn = null;
+                            try {
+                                // Open the connection set the request header and get the response
+                                urlConn = (HttpURLConnection) newUrl.openConnection(
+                                        java.net.Proxy.NO_PROXY);
+                                urlConn.setInstanceFollowRedirects(false);
+                                urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS);
+                                urlConn.setReadTimeout(SOCKET_TIMEOUT_MS);
+                                urlConn.setUseCaches(false);
+                                urlConn.setAllowUserInteraction(false);
+                                urlConn.setRequestProperty("Connection", "close");
+                                int responseCode = urlConn.getResponseCode();
+                                if (responseCode == 204) {
+                                    result = ConnectivityManager.CMP_RESULT_CODE_CONNECTABLE;
+                                } else {
+                                    result = ConnectivityManager.CMP_RESULT_CODE_REDIRECTED;
+                                }
+                                log("isMobileOk: connected responseCode=" + responseCode);
+                                urlConn.disconnect();
+                                urlConn = null;
+                                return result;
+                            } catch (Exception e) {
+                                log("isMobileOk: HttpURLConnection Exception e=" + e);
+                                if (urlConn != null) {
+                                    urlConn.disconnect();
+                                    urlConn = null;
+                                }
+                            }
+                        }
+                        result = ConnectivityManager.CMP_RESULT_CODE_NO_TCP_CONNECTION;
+                        log("isMobileOk: loops|timed out");
+                        return result;
+                    } catch (Exception e) {
+                        log("isMobileOk: Exception e=" + e);
+                        continue;
+                    }
+                }
+                log("isMobileOk: timed out");
+            } finally {
+                log("isMobileOk: F stop hipri");
+                mCs.setEnableFailFastMobileData(DctConstants.DISABLED);
+                mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
+                        Phone.FEATURE_ENABLE_HIPRI);
+                log("isMobileOk: X result=" + result);
+            }
+            return result;
+        }
+
+        @Override
+        protected Integer doInBackground(Params... params) {
+            return isMobileOk(params[0]);
+        }
+
+        @Override
+        protected void onPostExecute(Integer result) {
+            log("onPostExecute: result=" + result);
+            if ((mParams != null) && (mParams.mCb != null)) {
+                mParams.mCb.onComplete(result);
+            }
+        }
+
+        private String inetAddressesToString(InetAddress[] addresses) {
+            StringBuffer sb = new StringBuffer();
+            boolean firstTime = true;
+            for(InetAddress addr : addresses) {
+                if (firstTime) {
+                    firstTime = false;
+                } else {
+                    sb.append(",");
+                }
+                sb.append(addr);
+            }
+            return sb.toString();
+        }
+
+        private void printNetworkInfo() {
+            boolean hasIccCard = mTm.hasIccCard();
+            int simState = mTm.getSimState();
+            log("hasIccCard=" + hasIccCard
+                    + " simState=" + simState);
+            NetworkInfo[] ni = mCs.getAllNetworkInfo();
+            if (ni != null) {
+                log("ni.length=" + ni.length);
+                for (NetworkInfo netInfo: ni) {
+                    log("netInfo=" + netInfo.toString());
+                }
+            } else {
+                log("no network info ni=null");
+            }
+        }
+
+        /**
+         * Sleep for a few seconds then return.
+         * @param seconds
+         */
+        private static void sleep(int seconds) {
+            try {
+                Thread.sleep(seconds * 1000);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+
+        public boolean hasIPv4Address(LinkProperties lp) {
+            return lp.hasIPv4Address();
+        }
+
+        // Not implemented in LinkProperties, do it here.
+        public boolean hasIPv6Address(LinkProperties lp) {
+            for (LinkAddress address : lp.getLinkAddresses()) {
+              if (address.getAddress() instanceof Inet6Address) {
+                return true;
+              }
+            }
+            return false;
+        }
+
+        private void log(String s) {
+            Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s);
+        }
+    }
+
+    private static final String NOTIFICATION_ID = "CaptivePortal.Notification";
+
+    private void setNotificationVisible(boolean visible, NetworkInfo networkInfo, String url) {
+        log("setNotificationVisible: E visible=" + visible + " ni=" + networkInfo + " url=" + url);
+
+        Resources r = Resources.getSystem();
+        NotificationManager notificationManager = (NotificationManager) mContext
+            .getSystemService(Context.NOTIFICATION_SERVICE);
+
+        if (visible) {
+            CharSequence title;
+            CharSequence details;
+            int icon;
+            switch (networkInfo.getType()) {
+                case ConnectivityManager.TYPE_WIFI:
+                    log("setNotificationVisible: TYPE_WIFI");
+                    title = r.getString(R.string.wifi_available_sign_in, 0);
+                    details = r.getString(R.string.network_available_sign_in_detailed,
+                            networkInfo.getExtraInfo());
+                    icon = R.drawable.stat_notify_wifi_in_range;
+                    break;
+                case ConnectivityManager.TYPE_MOBILE:
+                case ConnectivityManager.TYPE_MOBILE_HIPRI:
+                    log("setNotificationVisible: TYPE_MOBILE|HIPRI");
+                    title = r.getString(R.string.network_available_sign_in, 0);
+                    // TODO: Change this to pull from NetworkInfo once a printable
+                    // name has been added to it
+                    details = mTelephonyManager.getNetworkOperatorName();
+                    icon = R.drawable.stat_notify_rssi_in_range;
+                    break;
+                default:
+                    log("setNotificationVisible: other type=" + networkInfo.getType());
+                    title = r.getString(R.string.network_available_sign_in, 0);
+                    details = r.getString(R.string.network_available_sign_in_detailed,
+                            networkInfo.getExtraInfo());
+                    icon = R.drawable.stat_notify_rssi_in_range;
+                    break;
+            }
+
+            Notification notification = new Notification();
+            notification.when = 0;
+            notification.icon = icon;
+            notification.flags = Notification.FLAG_AUTO_CANCEL;
+            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+            intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT |
+                    Intent.FLAG_ACTIVITY_NEW_TASK);
+            notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0);
+            notification.tickerText = title;
+            notification.setLatestEventInfo(mContext, title, details, notification.contentIntent);
+
+            log("setNotificaitionVisible: notify notificaiton=" + notification);
+            notificationManager.notify(NOTIFICATION_ID, 1, notification);
+        } else {
+            log("setNotificaitionVisible: cancel");
+            notificationManager.cancel(NOTIFICATION_ID, 1);
+        }
+        log("setNotificationVisible: X visible=" + visible + " ni=" + networkInfo + " url=" + url);
+    }
+
+    private String getProvisioningUrl() {
+        String url = mContext.getResources().getString(R.string.mobile_provisioning_url);
+        log("getProvisioningUrl: resource url=" + url);
+
+        // populate the iccid and imei in the provisioning url.
+        if (!TextUtils.isEmpty(url)) {
+            url = String.format(url,
+                    mTelephonyManager.getSimSerialNumber() /* ICCID */,
+                    mTelephonyManager.getDeviceId() /* IMEI */,
+                    mTelephonyManager.getLine1Number() /* Phone numer */);
+        }
+
+        log("getProvisioningUrl: url=" + url);
+        return url;
+    }
 }