Remove last NetworkStack usage of hidden APIs

Includes various small changes to stop using hidden APIs

Test: make NetworkStack
Test: flashed, booted, WiFi and tethering working
Bug: 112869080
Change-Id: Id2830795a444f484b377ed6437435a1cd833697a
diff --git a/core/java/android/net/NetworkUtils.java b/core/java/android/net/NetworkUtils.java
index 44170b5..07668a9 100644
--- a/core/java/android/net/NetworkUtils.java
+++ b/core/java/android/net/NetworkUtils.java
@@ -19,7 +19,6 @@
 import android.annotation.UnsupportedAppUsage;
 import android.net.shared.Inet4AddressUtils;
 import android.os.Build;
-import android.os.Parcel;
 import android.system.ErrnoException;
 import android.util.Log;
 import android.util.Pair;
@@ -247,32 +246,6 @@
     }
 
     /**
-     * Writes an InetAddress to a parcel. The address may be null. This is likely faster than
-     * calling writeSerializable.
-     */
-    protected static void parcelInetAddress(Parcel parcel, InetAddress address, int flags) {
-        byte[] addressArray = (address != null) ? address.getAddress() : null;
-        parcel.writeByteArray(addressArray);
-    }
-
-    /**
-     * Reads an InetAddress from a parcel. Returns null if the address that was written was null
-     * or if the data is invalid.
-     */
-    protected static InetAddress unparcelInetAddress(Parcel in) {
-        byte[] addressArray = in.createByteArray();
-        if (addressArray == null) {
-            return null;
-        }
-        try {
-            return InetAddress.getByAddress(addressArray);
-        } catch (UnknownHostException e) {
-            return null;
-        }
-    }
-
-
-    /**
      *  Masks a raw IP address byte array with the specified prefix length.
      */
     public static void maskRawAddress(byte[] array, int prefixLength) {
diff --git a/core/java/android/net/StaticIpConfiguration.java b/core/java/android/net/StaticIpConfiguration.java
index 25bae3c..99cf3a9 100644
--- a/core/java/android/net/StaticIpConfiguration.java
+++ b/core/java/android/net/StaticIpConfiguration.java
@@ -19,6 +19,7 @@
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
 import android.annotation.UnsupportedAppUsage;
+import android.net.shared.InetAddressUtils;
 import android.os.Parcel;
 import android.os.Parcelable;
 
@@ -232,10 +233,10 @@
     @Override
     public void writeToParcel(Parcel dest, int flags) {
         dest.writeParcelable(ipAddress, flags);
-        NetworkUtils.parcelInetAddress(dest, gateway, flags);
+        InetAddressUtils.parcelInetAddress(dest, gateway, flags);
         dest.writeInt(dnsServers.size());
         for (InetAddress dnsServer : dnsServers) {
-            NetworkUtils.parcelInetAddress(dest, dnsServer, flags);
+            InetAddressUtils.parcelInetAddress(dest, dnsServer, flags);
         }
         dest.writeString(domains);
     }
@@ -244,11 +245,11 @@
     public static StaticIpConfiguration readFromParcel(Parcel in) {
         final StaticIpConfiguration s = new StaticIpConfiguration();
         s.ipAddress = in.readParcelable(null);
-        s.gateway = NetworkUtils.unparcelInetAddress(in);
+        s.gateway = InetAddressUtils.unparcelInetAddress(in);
         s.dnsServers.clear();
         int size = in.readInt();
         for (int i = 0; i < size; i++) {
-            s.dnsServers.add(NetworkUtils.unparcelInetAddress(in));
+            s.dnsServers.add(InetAddressUtils.unparcelInetAddress(in));
         }
         s.domains = in.readString();
         return s;
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 1519c17..c8e5d2b 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -40,6 +40,7 @@
 import static android.net.NetworkPolicyManager.uidRulesToString;
 import static android.net.NetworkStack.NETWORKSTACK_PACKAGE_NAME;
 import static android.net.shared.NetworkMonitorUtils.isValidationRequired;
+import static android.net.shared.NetworkParcelableUtil.toStableParcelable;
 import static android.os.Process.INVALID_UID;
 import static android.system.OsConstants.IPPROTO_TCP;
 import static android.system.OsConstants.IPPROTO_UDP;
@@ -98,10 +99,10 @@
 import android.net.metrics.IpConnectivityLog;
 import android.net.metrics.NetworkEvent;
 import android.net.netlink.InetDiagMessage;
-import android.net.shared.NetdService;
 import android.net.shared.NetworkMonitorUtils;
 import android.net.shared.PrivateDnsConfig;
 import android.net.util.MultinetworkPolicyTracker;
+import android.net.util.NetdService;
 import android.os.Binder;
 import android.os.Build;
 import android.os.Bundle;
@@ -5012,8 +5013,8 @@
         if (DBG) log("registerNetworkAgent " + nai);
         final long token = Binder.clearCallingIdentity();
         try {
-            mContext.getSystemService(NetworkStack.class)
-                    .makeNetworkMonitor(nai.network, name, new NetworkMonitorCallbacks(nai));
+            mContext.getSystemService(NetworkStack.class).makeNetworkMonitor(
+                    toStableParcelable(nai.network), name, new NetworkMonitorCallbacks(nai));
         } finally {
             Binder.restoreCallingIdentity(token);
         }
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index 923c7dd..036c5dc 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -57,6 +57,7 @@
 import static android.net.NetworkPolicyManager.RULE_NONE;
 import static android.net.NetworkPolicyManager.RULE_REJECT_ALL;
 import static android.net.NetworkPolicyManager.RULE_REJECT_METERED;
+import static android.net.shared.NetworkParcelableUtil.fromStableParcelable;
 
 import static com.android.internal.util.TestUtils.waitForIdleHandler;
 import static com.android.internal.util.TestUtils.waitForIdleLooper;
@@ -119,6 +120,7 @@
 import android.net.NetworkInfo;
 import android.net.NetworkInfo.DetailedState;
 import android.net.NetworkMisc;
+import android.net.NetworkParcelable;
 import android.net.NetworkRequest;
 import android.net.NetworkSpecifier;
 import android.net.NetworkStack;
@@ -482,8 +484,8 @@
                 fail(e.getMessage());
             }
 
-            final ArgumentCaptor<Network> nmNetworkCaptor =
-                    ArgumentCaptor.forClass(Network.class);
+            final ArgumentCaptor<NetworkParcelable> nmNetworkCaptor =
+                    ArgumentCaptor.forClass(NetworkParcelable.class);
             final ArgumentCaptor<INetworkMonitorCallbacks> nmCbCaptor =
                     ArgumentCaptor.forClass(INetworkMonitorCallbacks.class);
             doNothing().when(mNetworkStack).makeNetworkMonitor(
@@ -523,7 +525,8 @@
                 }
             };
 
-            assertEquals(mNetworkAgent.netId, nmNetworkCaptor.getValue().netId);
+            assertEquals(
+                    mNetworkAgent.netId, fromStableParcelable(nmNetworkCaptor.getValue()).netId);
             mNmCallbacks = nmCbCaptor.getValue();
 
             try {