[CS01]Remove hidden API usage of NetworkCapabilities

The connection service will become the mainline module. The mutable
NetworkCapabilities is deprecated, and the NetworkCapabilities should
be built through their Builder instead.

Bug: 170598012
Test: atest FrameworksNetTests
Test: atest IpConnectivityMetricsTest
Change-Id: I73a4d3a7c118b9cef037ed52efb96ed123da2fa5

core/api/system-current.txt

@@ -6300,6 +6300,7 @@ package android.net {
     method @NonNull public int[] getAdministratorUids();
     method @Nullable public String getSsid();
     method @NonNull public int[] getTransportTypes();
+    method public boolean isPrivateDnsBroken();
     method public boolean satisfiedByNetworkCapabilities(@Nullable android.net.NetworkCapabilities);
     field public static final int NET_CAPABILITY_NOT_VCN_MANAGED = 28; // 0x1c
     field public static final int NET_CAPABILITY_OEM_PAID = 22; // 0x16
@@ -6314,6 +6315,7 @@ package android.net {
     method @NonNull public android.net.NetworkCapabilities.Builder addCapability(int);
     method @NonNull public android.net.NetworkCapabilities.Builder addTransportType(int);
     method @NonNull public android.net.NetworkCapabilities build();
+    method @NonNull public android.net.NetworkCapabilities.Builder clearAll();
     method @NonNull public android.net.NetworkCapabilities.Builder removeCapability(int);
     method @NonNull public android.net.NetworkCapabilities.Builder removeTransportType(int);
     method @NonNull @RequiresPermission(android.Manifest.permission.NETWORK_FACTORY) public android.net.NetworkCapabilities.Builder setAdministratorUids(@NonNull int[]);

packages/Connectivity/framework/src/android/net/NetworkCapabilities.java

@@ -2085,9 +2085,10 @@ public final class NetworkCapabilities implements Parcelable {
     /**
      * Check if private dns is broken.
      *
-     * @return {@code true} if {@code mPrivateDnsBroken} is set when private DNS is broken.
+     * @return {@code true} if private DNS is broken on this network.
      * @hide
      */
+    @SystemApi
     public boolean isPrivateDnsBroken() {
         return mPrivateDnsBroken;
     }
@@ -2329,6 +2330,17 @@ public final class NetworkCapabilities implements Parcelable {
             return this;
         }
 
+        /**
+         * Completely clears the contents of this object, removing even the capabilities that are
+         * set by default when the object is constructed.
+         * @return this builder
+         */
+        @NonNull
+        public Builder clearAll() {
+            mCaps.clearAll();
+            return this;
+        }
+
         /**
          * Sets the owner UID.
          *

services/core/java/com/android/server/connectivity/IpConnectivityEventBuilder.java

@@ -16,7 +16,6 @@
 
 package com.android.server.connectivity;
 
-import static android.net.NetworkCapabilities.MAX_TRANSPORT;
 import static android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH;
 import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
 import static android.net.NetworkCapabilities.TRANSPORT_ETHERNET;
@@ -25,15 +24,14 @@ import static android.net.NetworkCapabilities.TRANSPORT_VPN;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI_AWARE;
 
-import android.net.ConnectivityManager;
 import android.net.ConnectivityMetricsEvent;
 import android.net.metrics.ApfProgramEvent;
 import android.net.metrics.ApfStats;
+import android.net.metrics.ConnectStats;
 import android.net.metrics.DefaultNetworkEvent;
 import android.net.metrics.DhcpClientEvent;
 import android.net.metrics.DhcpErrorEvent;
 import android.net.metrics.DnsEvent;
-import android.net.metrics.ConnectStats;
 import android.net.metrics.IpManagerEvent;
 import android.net.metrics.IpReachabilityEvent;
 import android.net.metrics.NetworkEvent;
@@ -41,12 +39,13 @@ import android.net.metrics.RaEvent;
 import android.net.metrics.ValidationProbeEvent;
 import android.net.metrics.WakeupStats;
 import android.os.Parcelable;
-import android.util.SparseArray;
 import android.util.SparseIntArray;
+
 import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass;
 import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.IpConnectivityEvent;
 import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.IpConnectivityLog;
 import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.Pair;
+
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
@@ -361,29 +360,22 @@ final public class IpConnectivityEventBuilder {
                 return IpConnectivityLogClass.UNKNOWN;
             case 1:
                 int t = Long.numberOfTrailingZeros(transports);
-                return transportToLinkLayer(t);
+                return TRANSPORT_LINKLAYER_MAP.get(t, IpConnectivityLogClass.UNKNOWN);
             default:
                 return IpConnectivityLogClass.MULTIPLE;
         }
     }
 
-    private static int transportToLinkLayer(int transport) {
-        if (0 <= transport && transport < TRANSPORT_LINKLAYER_MAP.length) {
-            return TRANSPORT_LINKLAYER_MAP[transport];
-        }
-        return IpConnectivityLogClass.UNKNOWN;
-    }
-
-    private static final int[] TRANSPORT_LINKLAYER_MAP = new int[MAX_TRANSPORT + 1];
+    private static final SparseIntArray TRANSPORT_LINKLAYER_MAP = new SparseIntArray();
     static {
-        TRANSPORT_LINKLAYER_MAP[TRANSPORT_CELLULAR]   = IpConnectivityLogClass.CELLULAR;
-        TRANSPORT_LINKLAYER_MAP[TRANSPORT_WIFI]       = IpConnectivityLogClass.WIFI;
-        TRANSPORT_LINKLAYER_MAP[TRANSPORT_BLUETOOTH]  = IpConnectivityLogClass.BLUETOOTH;
-        TRANSPORT_LINKLAYER_MAP[TRANSPORT_ETHERNET]   = IpConnectivityLogClass.ETHERNET;
-        TRANSPORT_LINKLAYER_MAP[TRANSPORT_VPN]        = IpConnectivityLogClass.UNKNOWN;
-        TRANSPORT_LINKLAYER_MAP[TRANSPORT_WIFI_AWARE] = IpConnectivityLogClass.WIFI_NAN;
-        TRANSPORT_LINKLAYER_MAP[TRANSPORT_LOWPAN]     = IpConnectivityLogClass.LOWPAN;
-    };
+        TRANSPORT_LINKLAYER_MAP.append(TRANSPORT_CELLULAR, IpConnectivityLogClass.CELLULAR);
+        TRANSPORT_LINKLAYER_MAP.append(TRANSPORT_WIFI, IpConnectivityLogClass.WIFI);
+        TRANSPORT_LINKLAYER_MAP.append(TRANSPORT_BLUETOOTH, IpConnectivityLogClass.BLUETOOTH);
+        TRANSPORT_LINKLAYER_MAP.append(TRANSPORT_ETHERNET, IpConnectivityLogClass.ETHERNET);
+        TRANSPORT_LINKLAYER_MAP.append(TRANSPORT_VPN, IpConnectivityLogClass.UNKNOWN);
+        TRANSPORT_LINKLAYER_MAP.append(TRANSPORT_WIFI_AWARE, IpConnectivityLogClass.WIFI_NAN);
+        TRANSPORT_LINKLAYER_MAP.append(TRANSPORT_LOWPAN, IpConnectivityLogClass.LOWPAN);
+    }
 
     private static int ifnameToLinkLayer(String ifname) {
         // Do not try to catch all interface names with regexes, instead only catch patterns that