WifiServiceImpl: Allow setWifiEnabled for system apps

This allows system apps to toggle wifi on/off during emergency calls to get
user's location for example.

Bug: 138091278
Test: atest com.android.server.wifi
Change-Id: I095f9755c60034064e467dedcdb16b33dc63d9eb
Merged-In: I095f9755c60034064e467dedcdb16b33dc63d9eb

(cherry-picked from b46e815669ba3f376f7dda2a24479f84bad0b4a8)
(cherry picked from commit 949a9784e43720aaf3710589565ef5d8e22e20ab)

Change-Id: I57f11cb4545e6d6845504171ab37b737f0d1ec29

2 files changed, 39 insertions, 1 deletions

diff --git a/service/java/com/android/server/wifi/WifiServiceImpl.java b/service/java/com/android/server/wifi/WifiServiceImpl.java
index 6bb36b3b9..a4639924b 100644
--- a/service/java/com/android/server/wifi/WifiServiceImpl.java
+++ b/service/java/com/android/server/wifi/WifiServiceImpl.java
@@ -875,7 +875,8 @@ public class WifiServiceImpl extends BaseWifiService {
         }
         boolean isPrivileged = isPrivileged(Binder.getCallingPid(), Binder.getCallingUid());
         if (!isPrivileged
-                && !mWifiPermissionsUtil.isTargetSdkLessThan(packageName, Build.VERSION_CODES.Q)) {
+                && !mWifiPermissionsUtil.isTargetSdkLessThan(packageName, Build.VERSION_CODES.Q)
+                && !isSystem(packageName)) {
             mLog.info("setWifiEnabled not allowed for uid=%")
                     .c(Binder.getCallingUid()).flush();
             return false;
diff --git a/tests/wifitests/src/com/android/server/wifi/WifiServiceImplTest.java b/tests/wifitests/src/com/android/server/wifi/WifiServiceImplTest.java
index b69fba78b..378d6cf2e 100644
--- a/tests/wifitests/src/com/android/server/wifi/WifiServiceImplTest.java
+++ b/tests/wifitests/src/com/android/server/wifi/WifiServiceImplTest.java
@@ -600,6 +600,24 @@ public class WifiServiceImplTest {
     }
 
     /**
+     * Verify that wifi can be enabled by the system apps targeting Q SDK.
+     */
+    @Test
+    public void testSetWifiEnabledSuccessForSystemAppsTargetingQSDK() throws Exception {
+        doReturn(AppOpsManager.MODE_ALLOWED).when(mAppOpsManager)
+                .noteOp(AppOpsManager.OPSTR_CHANGE_WIFI_STATE, Process.myUid(), TEST_PACKAGE_NAME);
+        when(mWifiPermissionsUtil.isTargetSdkLessThan(anyString(),
+                eq(Build.VERSION_CODES.Q))).thenReturn(false);
+        mApplicationInfo.flags = ApplicationInfo.FLAG_SYSTEM;
+
+        when(mSettingsStore.handleWifiToggled(eq(true))).thenReturn(true);
+        when(mSettingsStore.isAirplaneModeOn()).thenReturn(false);
+        assertTrue(mWifiServiceImpl.setWifiEnabled(TEST_PACKAGE_NAME, true));
+
+        verify(mWifiController).sendMessage(eq(CMD_WIFI_TOGGLED));
+    }
+
+    /**
      * Verify that wifi can be enabled by the apps targeting pre-Q SDK.
      */
     @Test
@@ -812,6 +830,25 @@ public class WifiServiceImplTest {
     }
 
     /**
+     * Verify that wifi can be disabled by the system apps targeting Q SDK.
+     */
+    @Test
+    public void testSetWifiDisabledSuccessForSystemAppsTargetingQSDK() throws Exception {
+        doReturn(AppOpsManager.MODE_ALLOWED).when(mAppOpsManager)
+                .noteOp(AppOpsManager.OPSTR_CHANGE_WIFI_STATE, Process.myUid(), TEST_PACKAGE_NAME);
+        when(mWifiPermissionsUtil.isTargetSdkLessThan(anyString(),
+                eq(Build.VERSION_CODES.Q))).thenReturn(false);
+        mApplicationInfo.flags = ApplicationInfo.FLAG_SYSTEM;
+
+        when(mSettingsStore.handleWifiToggled(eq(false))).thenReturn(true);
+        when(mSettingsStore.isAirplaneModeOn()).thenReturn(false);
+        assertTrue(mWifiServiceImpl.setWifiEnabled(TEST_PACKAGE_NAME, false));
+
+        verify(mWifiController).sendMessage(eq(CMD_WIFI_TOGGLED));
+    }
+
+
+    /**
      * Verify that wifi can be disabled by the apps targeting pre-Q SDK.
      */
     @Test