9 files changed, 49 insertions, 45 deletions
diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index afdf3356201d..302a92a674c4 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -6449,6 +6449,19 @@ package android.net.sip {
 
 }
 
+package android.net.util {
+
+  public final class SocketUtils {
+    method public static void bindSocketToInterface(@NonNull java.io.FileDescriptor, @NonNull String) throws android.system.ErrnoException;
+    method public static void closeSocket(@Nullable java.io.FileDescriptor) throws java.io.IOException;
+    method @NonNull public static java.net.SocketAddress makeNetlinkSocketAddress(int, int);
+    method @NonNull public static java.net.SocketAddress makePacketSocketAddress(int, int);
+    method @Deprecated @NonNull public static java.net.SocketAddress makePacketSocketAddress(int, @NonNull byte[]);
+    method @NonNull public static java.net.SocketAddress makePacketSocketAddress(int, int, @NonNull byte[]);
+  }
+
+}
+
 package android.net.vcn {
 
   public class VcnManager {
diff --git a/core/java/android/net/VpnService.java b/core/java/android/net/VpnService.java
index f90fbaf1e0fb..fa3ff8a26862 100644
--- a/core/java/android/net/VpnService.java
+++ b/core/java/android/net/VpnService.java
@@ -41,6 +41,7 @@ import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.os.UserHandle;
 
+import com.android.internal.net.NetworkUtilsInternal;
 import com.android.internal.net.VpnConfig;
 
 import java.net.DatagramSocket;
@@ -254,7 +255,7 @@ public class VpnService extends Service {
      * @return {@code true} on success.
      */
     public boolean protect(int socket) {
-        return NetworkUtils.protectFromVpn(socket);
+        return NetworkUtilsInternal.protectFromVpn(socket);
     }
 
     /**
diff --git a/packages/Connectivity/framework/src/android/net/util/SocketUtils.java b/core/java/android/net/util/SocketUtils.java
index e64060f1b220..69edc757ce8a 100644
--- a/packages/Connectivity/framework/src/android/net/util/SocketUtils.java
+++ b/core/java/android/net/util/SocketUtils.java
@@ -22,12 +22,13 @@ import static android.system.OsConstants.SO_BINDTODEVICE;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
-import android.net.NetworkUtils;
 import android.system.ErrnoException;
 import android.system.NetlinkSocketAddress;
 import android.system.Os;
 import android.system.PacketSocketAddress;
 
+import com.android.internal.net.NetworkUtilsInternal;
+
 import libcore.io.IoBridge;
 
 import java.io.FileDescriptor;
@@ -51,7 +52,7 @@ public final class SocketUtils {
         // of struct ifreq is a NULL-terminated interface name.
         // TODO: add a setsockoptString()
         Os.setsockoptIfreq(socket, SOL_SOCKET, SO_BINDTODEVICE, iface);
-        NetworkUtils.protectFromVpn(socket);
+        NetworkUtilsInternal.protectFromVpn(socket);
     }
 
     /**
diff --git a/core/java/com/android/internal/net/NetworkUtilsInternal.java b/core/java/com/android/internal/net/NetworkUtilsInternal.java
index 571d7e721094..052959abff69 100644
--- a/core/java/com/android/internal/net/NetworkUtilsInternal.java
+++ b/core/java/com/android/internal/net/NetworkUtilsInternal.java
@@ -22,6 +22,8 @@ import static android.system.OsConstants.AF_INET6;
 import android.annotation.NonNull;
 import android.system.Os;
 
+import java.io.FileDescriptor;
+
 /** @hide */
 public class NetworkUtilsInternal {
 
@@ -36,6 +38,20 @@ public class NetworkUtilsInternal {
     public static native void setAllowNetworkingForProcess(boolean allowNetworking);
 
     /**
+     * Protect {@code fd} from VPN connections.  After protecting, data sent through
+     * this socket will go directly to the underlying network, so its traffic will not be
+     * forwarded through the VPN.
+     */
+    public static native boolean protectFromVpn(FileDescriptor fd);
+
+    /**
+     * Protect {@code socketfd} from VPN connections.  After protecting, data sent through
+     * this socket will go directly to the underlying network, so its traffic will not be
+     * forwarded through the VPN.
+     */
+    public static native boolean protectFromVpn(int socketfd);
+
+    /**
      * Returns true if the hostname is weakly validated.
      * @param hostname Name of host to validate.
      * @return True if it's a valid-ish hostname.
diff --git a/core/jni/Android.bp b/core/jni/Android.bp
index e58ad79de89e..afd19b63bc71 100644
--- a/core/jni/Android.bp
+++ b/core/jni/Android.bp
@@ -149,7 +149,7 @@ cc_library_shared {
                 "android_os_VintfRuntimeInfo.cpp",
                 "android_os_incremental_IncrementalManager.cpp",
                 "android_net_LocalSocketImpl.cpp",
-                "android_net_NetUtils.cpp",
+                "android_net_NetworkUtils.cpp",
                 "android_service_DataLoaderService.cpp",
                 "android_util_AssetManager.cpp",
                 "android_util_Binder.cpp",
diff --git a/core/jni/android_net_NetUtils.cpp b/core/jni/android_net_NetworkUtils.cpp
index e2af87ee1adf..750810840bde 100644
--- a/core/jni/android_net_NetUtils.cpp
+++ b/core/jni/android_net_NetworkUtils.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "NetUtils"
+#define LOG_TAG "NetworkUtils"
 
 #include <vector>
 
@@ -123,15 +123,6 @@ static jint android_net_utils_bindSocketToNetwork(JNIEnv *env, jobject thiz, job
     return setNetworkForSocket(netId, AFileDescriptor_getFD(env, javaFd));
 }
 
-static jboolean android_net_utils_protectFromVpn(JNIEnv *env, jobject thiz, jint socket)
-{
-    return (jboolean) !protectFromVpn(socket);
-}
-
-static jboolean android_net_utils_protectFromVpnWithFd(JNIEnv *env, jobject thiz, jobject javaFd) {
-    return android_net_utils_protectFromVpn(env, thiz, AFileDescriptor_getFD(env, javaFd));
-}
-
 static jboolean android_net_utils_queryUserAccess(JNIEnv *env, jobject thiz, jint uid, jint netId)
 {
     return (jboolean) !queryUserAccess(uid, netId);
@@ -276,8 +267,6 @@ static const JNINativeMethod gNetworkUtilMethods[] = {
     { "getBoundNetworkForProcess", "()I", (void*) android_net_utils_getBoundNetworkForProcess },
     { "bindProcessToNetworkForHostResolution", "(I)Z", (void*) android_net_utils_bindProcessToNetworkForHostResolution },
     { "bindSocketToNetwork", "(Ljava/io/FileDescriptor;I)I", (void*) android_net_utils_bindSocketToNetwork },
-    { "protectFromVpn", "(I)Z", (void*) android_net_utils_protectFromVpn },
-    { "protectFromVpn", "(Ljava/io/FileDescriptor;)Z", (void*) android_net_utils_protectFromVpnWithFd },
     { "queryUserAccess", "(II)Z", (void*)android_net_utils_queryUserAccess },
     { "attachDropAllBPFFilter", "(Ljava/io/FileDescriptor;)V", (void*) android_net_utils_attachDropAllBPFFilter },
     { "detachBPFFilter", "(Ljava/io/FileDescriptor;)V", (void*) android_net_utils_detachBPFFilter },
diff --git a/core/jni/com_android_internal_net_NetworkUtilsInternal.cpp b/core/jni/com_android_internal_net_NetworkUtilsInternal.cpp
index 10fc18dcd386..980e12d0bb40 100644
--- a/core/jni/com_android_internal_net_NetworkUtilsInternal.cpp
+++ b/core/jni/com_android_internal_net_NetworkUtilsInternal.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <android/file_descriptor_jni.h>
+
 #include "NetdClient.h"
 #include "core_jni_helpers.h"
 #include "jni.h"
@@ -24,9 +26,20 @@ static void android_net_utils_setAllowNetworkingForProcess(JNIEnv *env, jobject
     setAllowNetworkingForProcess(hasConnectivity == JNI_TRUE);
 }
 
+static jboolean android_net_utils_protectFromVpn(JNIEnv *env, jobject thiz, jint socket) {
+    return (jboolean)!protectFromVpn(socket);
+}
+
+static jboolean android_net_utils_protectFromVpnWithFd(JNIEnv *env, jobject thiz, jobject javaFd) {
+    return android_net_utils_protectFromVpn(env, thiz, AFileDescriptor_getFD(env, javaFd));
+}
+
 static const JNINativeMethod gNetworkUtilMethods[] = {
         {"setAllowNetworkingForProcess", "(Z)V",
          (void *)android_net_utils_setAllowNetworkingForProcess},
+        {"protectFromVpn", "(I)Z", (void *)android_net_utils_protectFromVpn},
+        {"protectFromVpn", "(Ljava/io/FileDescriptor;)Z",
+         (void *)android_net_utils_protectFromVpnWithFd},
 };
 
 int register_com_android_internal_net_NetworkUtilsInternal(JNIEnv *env) {
diff --git a/packages/Connectivity/framework/api/system-current.txt b/packages/Connectivity/framework/api/system-current.txt
index 41ebc5774f3d..b541e5238ffc 100644
--- a/packages/Connectivity/framework/api/system-current.txt
+++ b/packages/Connectivity/framework/api/system-current.txt
@@ -392,16 +392,3 @@ package android.net.apf {
 
 }
 
-package android.net.util {
-
-  public final class SocketUtils {
-    method public static void bindSocketToInterface(@NonNull java.io.FileDescriptor, @NonNull String) throws android.system.ErrnoException;
-    method public static void closeSocket(@Nullable java.io.FileDescriptor) throws java.io.IOException;
-    method @NonNull public static java.net.SocketAddress makeNetlinkSocketAddress(int, int);
-    method @NonNull public static java.net.SocketAddress makePacketSocketAddress(int, int);
-    method @Deprecated @NonNull public static java.net.SocketAddress makePacketSocketAddress(int, @NonNull byte[]);
-    method @NonNull public static java.net.SocketAddress makePacketSocketAddress(int, int, @NonNull byte[]);
-  }
-
-}
-
diff --git a/packages/Connectivity/framework/src/android/net/NetworkUtils.java b/packages/Connectivity/framework/src/android/net/NetworkUtils.java
index b5e8a614b8ea..9e42bbecbe9d 100644
--- a/packages/Connectivity/framework/src/android/net/NetworkUtils.java
+++ b/packages/Connectivity/framework/src/android/net/NetworkUtils.java
@@ -87,22 +87,6 @@ public class NetworkUtils {
     public static native int bindSocketToNetwork(FileDescriptor fd, int netId);
 
     /**
-     * Protect {@code fd} from VPN connections.  After protecting, data sent through
-     * this socket will go directly to the underlying network, so its traffic will not be
-     * forwarded through the VPN.
-     */
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553,
-            publicAlternatives = "Use {@link android.net.VpnService#protect} instead.")
-    public static native boolean protectFromVpn(FileDescriptor fd);
-
-    /**
-     * Protect {@code socketfd} from VPN connections.  After protecting, data sent through
-     * this socket will go directly to the underlying network, so its traffic will not be
-     * forwarded through the VPN.
-     */
-    public native static boolean protectFromVpn(int socketfd);
-
-    /**
      * Determine if {@code uid} can access network designated by {@code netId}.
      * @return {@code true} if {@code uid} can access network, {@code false} otherwise.
      */