From b2e6c01f449f3fd4effee7029518684deb4e98f6 Mon Sep 17 00:00:00 2001
From: Irfan Sheriff <isheriff@google.com>
Date: Mon, 5 Apr 2010 11:57:56 -0700
Subject: [PATCH] Disable tethering when airplane mode is enabled

Tethering should be disabled when
airplane mode is enabled. Additionally,
we should restore Wifi (if it was on
before tethering was enabled) when
airplane mode is disabled.

Bug: 2567099
Change-Id: Iba2031f5ecb207954fd155c47134b39ed0167fa0
---
 .../java/com/android/server/WifiService.java  | 21 +++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/services/java/com/android/server/WifiService.java b/services/java/com/android/server/WifiService.java
index 3bfb4c6516df8..c0a44918487db 100644
--- a/services/java/com/android/server/WifiService.java
+++ b/services/java/com/android/server/WifiService.java
@@ -190,6 +190,12 @@ public class WifiService extends IWifiManager.Stub {
      */
     private int mLastEnableUid = Process.myUid();
 
+    /*
+     * Last UID that asked to enable WIFI AP.
+     */
+    private int mLastApEnableUid = Process.myUid();
+
+
     /**
      * Number of allowed radio frequency channels in various regulatory domains.
      * This list is sufficient for 802.11b/g networks (2.4GHz range).
@@ -240,6 +246,10 @@ public class WifiService extends IWifiManager.Stub {
                     public void onReceive(Context context, Intent intent) {
                         // clear our flag indicating the user has overwridden airplane mode
                         mAirplaneModeOverwridden = false;
+                        // on airplane disable, restore Wifi if the saved state indicates so
+                        if (!isAirplaneModeOn() && testAndClearWifiSavedState()) {
+                            persistWifiEnabled(true);
+                        }
                         updateWifiState();
                     }
                 },
@@ -613,8 +623,7 @@ public class WifiService extends IWifiManager.Stub {
             sWakeLock.acquire();
             Binder.restoreCallingIdentity(ident);
 
-            mLastEnableUid = Binder.getCallingUid();
-
+            mLastApEnableUid = Binder.getCallingUid();
             sendAccessPointMessage(enabled, wifiConfig, Binder.getCallingUid());
         }
 
@@ -1802,6 +1811,14 @@ public class WifiService extends IWifiManager.Stub {
             if ((mWifiStateTracker.getWifiState() == WIFI_STATE_ENABLING) && !airplaneMode) {
                 return;
             }
+
+            /* Disable tethering when airplane mode is enabled */
+            if (airplaneMode &&
+                (mWifiApState == WIFI_AP_STATE_ENABLING || mWifiApState == WIFI_AP_STATE_ENABLED)) {
+                sWakeLock.acquire();
+                sendAccessPointMessage(false, null, mLastApEnableUid);
+            }
+
             if (wifiShouldBeEnabled) {
                 if (wifiShouldBeStarted) {
                     sWakeLock.acquire();