Allow SysUi to see the connectivity diagnostic callbacks

SysUi needs to see connectivity diagnostic callbacks to display
 "Checking for internet access..." -> "Connected" or "No internet access".

Bug: 307161342
Test: atest FrameworksNetTests, manually connect to a network without internet connectivity,
verify Internet Dialog doesn't get stuck showing
 "Checking for internet access..."

Change-Id: I86e2b852ff9e5dfbfc37ba711f477166b0ac6835

service/src/com/android/server/ConnectivityService.java

@@ -968,6 +968,9 @@ public class ConnectivityService extends IConnectivityManager.Stub
     // Flag to optimize closing frozen app sockets by waiting for the cellular modem to wake up.
     private final boolean mDelayDestroyFrozenSockets;
 
+    // Flag to allow SysUI to receive connectivity reports for wifi picker UI.
+    private final boolean mAllowSysUiConnectivityReports;
+
     // Uids that ConnectivityService is pending to close sockets of.
     private final Set<Integer> mPendingFrozenUids = new ArraySet<>();
 
@@ -1467,6 +1470,13 @@ public class ConnectivityService extends IConnectivityManager.Stub
             return DeviceConfigUtils.isTetheringFeatureEnabled(context, name);
         }
 
+        /**
+         * @see DeviceConfigUtils#isTetheringFeatureNotChickenedOut
+         */
+        public boolean isFeatureNotChickenedOut(Context context, String name) {
+            return DeviceConfigUtils.isTetheringFeatureNotChickenedOut(context, name);
+        }
+
         /**
          * Get the BpfNetMaps implementation to use in ConnectivityService.
          * @param netd a netd binder
@@ -1834,6 +1844,8 @@ public class ConnectivityService extends IConnectivityManager.Stub
                 && mDeps.isFeatureEnabled(context, KEY_DESTROY_FROZEN_SOCKETS_VERSION);
         mDelayDestroyFrozenSockets = mDeps.isAtLeastU()
                 && mDeps.isFeatureEnabled(context, DELAY_DESTROY_FROZEN_SOCKETS_VERSION);
+        mAllowSysUiConnectivityReports = mDeps.isFeatureNotChickenedOut(
+                mContext, ALLOW_SYSUI_CONNECTIVITY_REPORTS);
         if (mDestroyFrozenSockets) {
             final UidFrozenStateChangedCallback frozenStateChangedCallback =
                     new UidFrozenStateChangedCallback() {
@@ -3296,6 +3308,10 @@ public class ConnectivityService extends IConnectivityManager.Stub
     static final String DELAY_DESTROY_FROZEN_SOCKETS_VERSION =
             "delay_destroy_frozen_sockets_version";
 
+    @VisibleForTesting
+    public static final String ALLOW_SYSUI_CONNECTIVITY_REPORTS =
+            "allow_sysui_connectivity_reports";
+
     private void enforceInternetPermission() {
         mContext.enforceCallingOrSelfPermission(
                 android.Manifest.permission.INTERNET,
@@ -3459,6 +3475,11 @@ public class ConnectivityService extends IConnectivityManager.Stub
                 NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK);
     }
 
+    private boolean checkSystemBarServicePermission(int pid, int uid) {
+        return checkAnyPermissionOf(mContext, pid, uid,
+                android.Manifest.permission.STATUS_BAR_SERVICE);
+    }
+
     private boolean checkNetworkSignalStrengthWakeupPermission(int pid, int uid) {
         return checkAnyPermissionOf(mContext, pid, uid,
                 android.Manifest.permission.NETWORK_SIGNAL_STRENGTH_WAKEUP,
@@ -11532,6 +11553,10 @@ public class ConnectivityService extends IConnectivityManager.Stub
         if (checkNetworkStackPermission(callbackPid, callbackUid)) {
             return true;
         }
+        if (mAllowSysUiConnectivityReports
+                && checkSystemBarServicePermission(callbackPid, callbackUid)) {
+            return true;
+        }
 
         // Administrator UIDs also contains the Owner UID
         final int[] administratorUids = nai.networkCapabilities.getAdministratorUids();

tests/unit/java/com/android/server/ConnectivityServiceTest.java

@@ -31,6 +31,7 @@ import static android.Manifest.permission.NETWORK_SETUP_WIZARD;
 import static android.Manifest.permission.NETWORK_STACK;
 import static android.Manifest.permission.PACKET_KEEPALIVE_OFFLOAD;
 import static android.Manifest.permission.READ_DEVICE_CONFIG;
+import static android.Manifest.permission.STATUS_BAR_SERVICE;
 import static android.app.ActivityManager.UidFrozenStateChangedCallback.UID_FROZEN_STATE_FROZEN;
 import static android.app.ActivityManager.UidFrozenStateChangedCallback.UID_FROZEN_STATE_UNFROZEN;
 import static android.app.PendingIntent.FLAG_IMMUTABLE;
@@ -156,6 +157,7 @@ import static android.system.OsConstants.IPPROTO_TCP;
 
 import static com.android.server.ConnectivityService.DELAY_DESTROY_FROZEN_SOCKETS_VERSION;
 import static com.android.net.module.util.DeviceConfigUtils.TETHERING_MODULE_NAME;
+import static com.android.server.ConnectivityService.ALLOW_SYSUI_CONNECTIVITY_REPORTS;
 import static com.android.server.ConnectivityService.KEY_DESTROY_FROZEN_SOCKETS_VERSION;
 import static com.android.server.ConnectivityService.MAX_NETWORK_REQUESTS_PER_SYSTEM_UID;
 import static com.android.server.ConnectivityService.PREFERENCE_ORDER_MOBILE_DATA_PREFERERRED;
@@ -2149,6 +2151,16 @@ public class ConnectivityServiceTest {
             }
         }
 
+        @Override
+        public boolean isFeatureNotChickenedOut(Context context, String name) {
+            switch (name) {
+                case ALLOW_SYSUI_CONNECTIVITY_REPORTS:
+                    return true;
+                default:
+                    return super.isFeatureNotChickenedOut(context, name);
+            }
+        }
+
         public void setChangeIdEnabled(final boolean enabled, final long changeId, final int uid) {
             final Pair<Long, Integer> data = new Pair<>(changeId, uid);
             // mEnabledChangeIds is read on the handler thread and maybe the test thread, so
@@ -12804,6 +12816,18 @@ public class ConnectivityServiceTest {
                         mContext.getOpPackageName()));
     }
 
+    @Test
+    public void testCheckConnectivityDiagnosticsPermissionsSysUi() throws Exception {
+        final NetworkAgentInfo naiWithoutUid = fakeMobileNai(new NetworkCapabilities());
+
+        mServiceContext.setPermission(STATUS_BAR_SERVICE, PERMISSION_GRANTED);
+        assertTrue(
+                "SysUi permission (STATUS_BAR_SERVICE) not applied",
+                mService.checkConnectivityDiagnosticsPermissions(
+                        Process.myPid(), Process.myUid(), naiWithoutUid,
+                        mContext.getOpPackageName()));
+    }
+
     @Test
     public void testCheckConnectivityDiagnosticsPermissionsWrongUidPackageName() throws Exception {
         final int wrongUid = Process.myUid() + 1;

tests/unit/java/com/android/server/connectivityservice/base/CSTest.kt

@@ -127,6 +127,7 @@ open class CSTest {
         it[ConnectivityFlags.NO_REMATCH_ALL_REQUESTS_ON_REGISTER] = true
         it[ConnectivityService.KEY_DESTROY_FROZEN_SOCKETS_VERSION] = true
         it[ConnectivityService.DELAY_DESTROY_FROZEN_SOCKETS_VERSION] = true
+        it[ConnectivityService.ALLOW_SYSUI_CONNECTIVITY_REPORTS] = true
     }
     fun enableFeature(f: String) = enabledFeatures.set(f, true)
     fun disableFeature(f: String) = enabledFeatures.set(f, false)
@@ -195,6 +196,8 @@ open class CSTest {
         // checking permissions.
         override fun isFeatureEnabled(context: Context?, name: String?) =
                 enabledFeatures[name] ?: fail("Unmocked feature $name, see CSTest.enabledFeatures")
+        override fun isFeatureNotChickenedOut(context: Context?, name: String?) =
+                enabledFeatures[name] ?: fail("Unmocked feature $name, see CSTest.enabledFeatures")
 
         // Mocked change IDs
         private val enabledChangeIds = ArraySet<Long>()