Handle provisioning APN by turning off/on radio.

The change is specific to AT&T as they want no signaling from device during provisioning.
I've tested following cases:
- expired AT&T SIM to make sure provisioning flow works as expected.
- airplane mode on/off with both active and expired AT&T SIM.
- wifi <-> mobile transitions work okay.
- LTE with Verizon SIM (basic sanity).

bug: 13190133

Change-Id: I215963174ae6000ae71d1dda693f95413f3d6e81

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

@@ -4145,7 +4145,9 @@ public class ConnectivityService extends IConnectivityManager.Stub {
                                 mIsProvisioningNetwork.set(true);
                                 MobileDataStateTracker mdst = (MobileDataStateTracker)
                                         mNetTrackers[ConnectivityManager.TYPE_MOBILE];
-                                mdst.setInternalDataEnable(false);
+
+                                // Disable radio until user starts provisioning
+                                mdst.setRadio(false);
                             } else {
                                 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url");
                             }
@@ -4651,17 +4653,24 @@ public class ConnectivityService extends IConnectivityManager.Stub {
         // Mark notification as not visible
         setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null);
 
-        // If provisioning network handle as a special case,
+        // Check airplane mode
+        boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(),
+                Settings.Global.AIRPLANE_MODE_ON, 0) == 1;
+        // If provisioning network and not in airplane mode handle as a special case,
         // otherwise launch browser with the intent directly.
-        if (mIsProvisioningNetwork.get()) {
+        if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) {
             if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch");
+            mIsProvisioningNetwork.set(false);
             mIsStartingProvisioning.set(true);
             MobileDataStateTracker mdst = (MobileDataStateTracker)
                     mNetTrackers[ConnectivityManager.TYPE_MOBILE];
+            // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here
+            mdst.setRadio(true);
             mdst.setEnableFailFastMobileData(DctConstants.ENABLED);
             mdst.enableMobileProvisioning(url);
         } else {
             if (DBG) log("handleMobileProvisioningAction: not prov network, launch browser directly");
+            mIsProvisioningNetwork.set(false);
             Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN,
                     Intent.CATEGORY_APP_BROWSER);
             newIntent.setData(Uri.parse(url));