Remove all ephemeral networks when user switch

Every time switch user, remove all ephemeral nerworks to avoil uid
mismatch

Bug: 161841383
Test: atest com.android.server.wifi

Merged-In: I0caf8e08215055154a1f45714731d3a25ddac012
Change-Id: I0caf8e08215055154a1f45714731d3a25ddac012
(cherry picked from commit 9d4b4f2697baef0f927e6912e36882a8ee7f0038)

1 files changed, 9 insertions, 1 deletions

diff --git a/service/java/com/android/server/wifi/WifiConfigManager.java b/service/java/com/android/server/wifi/WifiConfigManager.java
index 6d04b7a68..5b5c968c1 100644
--- a/service/java/com/android/server/wifi/WifiConfigManager.java
+++ b/service/java/com/android/server/wifi/WifiConfigManager.java
@@ -2927,14 +2927,22 @@ public class WifiConfigManager {
         Set<Integer> removedNetworkIds = new HashSet<>();
         // Remove any private networks of the old user before switching the userId.
         for (WifiConfiguration config : getConfiguredNetworks()) {
-            if (!config.shared && doesUidBelongToCurrentUser(config.creatorUid)) {
+            if ((!config.shared && doesUidBelongToCurrentUser(config.creatorUid))
+                    || config.ephemeral) {
                 removedNetworkIds.add(config.networkId);
                 localLog("clearInternalUserData: removed config."
                         + " netId=" + config.networkId
                         + " configKey=" + config.getKey());
                 mConfiguredNetworks.remove(config.networkId);
+                for (OnNetworkUpdateListener listener : mListeners) {
+                    listener.onNetworkRemoved(
+                            createExternalWifiConfiguration(config, true, Process.WIFI_UID));
+                }
             }
         }
+        if (!removedNetworkIds.isEmpty()) {
+            sendConfiguredNetworkChangedBroadcast(WifiManager.CHANGE_REASON_REMOVED);
+        }
         mUserTemporarilyDisabledList.clear();
         mScanDetailCaches.clear();
         clearLastSelectedNetwork();