Fix API in CaptivePortal and ConnectivityManager

- Remove CaptivePortal constructor from SystemApi. This constructor was
   added in Q timeframe and ends up being unnecessary since
   CaptivePortal creation was refactored to ConnectivityService because
   of visibility issues on ICaptivePortal.
 - Rename getAvoidBadWifi to shouldAvoidBadWifi
 - Add permission annotation for shouldAvoidBadWifi

Test: flashed, WiFi and captive portal works
Bug: 128935314
Bug: 128935673
(clean cherry-pick of AOSP I7395d4a4db6a64398a827692aee1956c011873e5)

Change-Id: I09545c00af3519dbf141dd5951b28f49e37b3e80

api/system-current.txt

@@ -4029,7 +4029,6 @@ package android.metrics {
 package android.net {
 
   public class CaptivePortal implements android.os.Parcelable {
-    ctor public CaptivePortal(@NonNull android.os.IBinder);
     method public void logEvent(int, @NonNull String);
     method public void useNetwork();
     field public static final int APP_RETURN_DISMISSED = 0; // 0x0
@@ -4040,12 +4039,12 @@ package android.net {
   public class ConnectivityManager {
     method @RequiresPermission(android.Manifest.permission.PACKET_KEEPALIVE_OFFLOAD) public android.net.SocketKeepalive createNattKeepalive(@NonNull android.net.Network, @NonNull java.io.FileDescriptor, @NonNull java.net.InetAddress, @NonNull java.net.InetAddress, @NonNull java.util.concurrent.Executor, @NonNull android.net.SocketKeepalive.Callback);
     method @RequiresPermission(android.Manifest.permission.PACKET_KEEPALIVE_OFFLOAD) public android.net.SocketKeepalive createSocketKeepalive(@NonNull android.net.Network, @NonNull java.net.Socket, @NonNull java.util.concurrent.Executor, @NonNull android.net.SocketKeepalive.Callback);
-    method public boolean getAvoidBadWifi();
     method @RequiresPermission(android.Manifest.permission.LOCAL_MAC_ADDRESS) public String getCaptivePortalServerUrl();
     method @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public void getLatestTetheringEntitlementResult(int, boolean, @NonNull java.util.concurrent.Executor, @NonNull android.net.ConnectivityManager.OnTetheringEntitlementResultListener);
     method @RequiresPermission(anyOf={android.Manifest.permission.TETHER_PRIVILEGED, android.Manifest.permission.WRITE_SETTINGS}) public boolean isTetheringSupported();
     method @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public void registerTetheringEventCallback(@NonNull java.util.concurrent.Executor, @NonNull android.net.ConnectivityManager.OnTetheringEventCallback);
     method @RequiresPermission(anyOf={"android.permission.NETWORK_SETTINGS", android.Manifest.permission.NETWORK_SETUP_WIZARD, "android.permission.NETWORK_STACK"}) public void setAirplaneMode(boolean);
+    method @RequiresPermission(anyOf={android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK, "android.permission.NETWORK_STACK"}) public boolean shouldAvoidBadWifi();
     method @RequiresPermission(android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK) public void startCaptivePortalApp(@NonNull android.net.Network, @NonNull android.os.Bundle);
     method @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public void startTethering(int, boolean, android.net.ConnectivityManager.OnStartTetheringCallback);
     method @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public void startTethering(int, boolean, android.net.ConnectivityManager.OnStartTetheringCallback, android.os.Handler);

api/test-current.txt

@@ -1207,7 +1207,6 @@ package android.metrics {
 package android.net {
 
   public class CaptivePortal implements android.os.Parcelable {
-    ctor public CaptivePortal(@NonNull android.os.IBinder);
     method public void logEvent(int, @NonNull String);
     method public void useNetwork();
     field public static final int APP_RETURN_DISMISSED = 0; // 0x0

core/java/android/net/CaptivePortal.java

@@ -64,8 +64,6 @@ public class CaptivePortal implements Parcelable {
     private final IBinder mBinder;
 
     /** @hide */
-    @SystemApi
-    @TestApi
     public CaptivePortal(@NonNull IBinder binder) {
         mBinder = binder;
     }

core/java/android/net/ConnectivityManager.java

@@ -4101,9 +4101,12 @@ public class ConnectivityManager {
      * @hide
      */
     @SystemApi
-    public boolean getAvoidBadWifi() {
+    @RequiresPermission(anyOf = {
+            NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
+            android.Manifest.permission.NETWORK_STACK})
+    public boolean shouldAvoidBadWifi() {
         try {
-            return mService.getAvoidBadWifi();
+            return mService.shouldAvoidBadWifi();
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }

core/java/android/net/IConnectivityManager.aidl

@@ -182,7 +182,7 @@ interface IConnectivityManager
     void startCaptivePortalApp(in Network network);
     void startCaptivePortalAppInternal(in Network network, in Bundle appExtras);
 
-    boolean getAvoidBadWifi();
+    boolean shouldAvoidBadWifi();
     int getMultipathPreference(in Network Network);
 
     NetworkRequest getDefaultRequest();

packages/NetworkStack/src/android/net/ip/IpClient.java

@@ -897,7 +897,7 @@ public class IpClient extends StateMachine {
         // accompanying code in IpReachabilityMonitor) is unreachable.
         final boolean ignoreIPv6ProvisioningLoss =
                 mConfiguration != null && mConfiguration.mUsingMultinetworkPolicyTracker
-                && mCm.getAvoidBadWifi();
+                && mCm.shouldAvoidBadWifi();
 
         // Additionally:
         //

packages/NetworkStack/src/android/net/ip/IpReachabilityMonitor.java

@@ -332,7 +332,7 @@ public class IpReachabilityMonitor {
     }
 
     private boolean avoidingBadLinks() {
-        return !mUsingMultinetworkPolicyTracker || mCm.getAvoidBadWifi();
+        return !mUsingMultinetworkPolicyTracker || mCm.shouldAvoidBadWifi();
     }
 
     public void probeAll() {

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

@@ -3470,8 +3470,12 @@ public class ConnectivityService extends IConnectivityManager.Stub
         return mMultinetworkPolicyTracker.getAvoidBadWifi();
     }
 
-    @Override
-    public boolean getAvoidBadWifi() {
+    /**
+     * Return whether the device should maintain continuous, working connectivity by switching away
+     * from WiFi networks having no connectivity.
+     * @see MultinetworkPolicyTracker#getAvoidBadWifi()
+     */
+    public boolean shouldAvoidBadWifi() {
         if (!checkNetworkStackPermission()) {
             throw new SecurityException("avoidBadWifi requires NETWORK_STACK permission");
         }