Merge changes I98979758,I1c49711d into rvc-dev

* changes:
  Create base class that sets up test network
  Create TestNetworkUtils for IKE and IPsec CTS

tests/cts/net/ipsec/src/android/net/ipsec/ike/cts/IkeSessionParamsTestBase.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.ipsec.ike.cts;
+
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.LinkAddress;
+import android.net.Network;
+import android.net.TestNetworkInterface;
+import android.net.TestNetworkManager;
+import android.net.ipsec.ike.cts.TestNetworkUtils.TestNetworkCallback;
+import android.os.Binder;
+import android.os.IBinder;
+import android.os.ParcelFileDescriptor;
+import android.platform.test.annotations.AppModeFull;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+@AppModeFull(reason = "MANAGE_TEST_NETWORKS permission can't be granted to instant apps")
+abstract class IkeSessionParamsTestBase extends IkeTestBase {
+    // Static state to reduce setup/teardown
+    static ConnectivityManager sCM;
+    static TestNetworkManager sTNM;
+    static ParcelFileDescriptor sTunFd;
+    static TestNetworkCallback sTunNetworkCallback;
+    static Network sTunNetwork;
+
+    static Context sContext = InstrumentationRegistry.getContext();
+    static IBinder sBinder = new Binder();
+
+    // This method is guaranteed to run in subclasses and will run before subclasses' @BeforeClass
+    // methods.
+    @BeforeClass
+    public static void setUpTestNetworkBeforeClass() throws Exception {
+        InstrumentationRegistry.getInstrumentation()
+                .getUiAutomation()
+                .adoptShellPermissionIdentity();
+        sCM = (ConnectivityManager) sContext.getSystemService(Context.CONNECTIVITY_SERVICE);
+        sTNM = (TestNetworkManager) sContext.getSystemService(Context.TEST_NETWORK_SERVICE);
+
+        TestNetworkInterface testIface =
+                sTNM.createTunInterface(
+                        new LinkAddress[] {new LinkAddress(IPV4_ADDRESS_LOCAL, IP4_PREFIX_LEN)});
+
+        sTunFd = testIface.getFileDescriptor();
+        sTunNetworkCallback =
+                TestNetworkUtils.setupAndGetTestNetwork(
+                        sCM, sTNM, testIface.getInterfaceName(), sBinder);
+        sTunNetwork = sTunNetworkCallback.getNetworkBlocking();
+    }
+
+    // This method is guaranteed to run in subclasses and will run after subclasses' @AfterClass
+    // methods.
+    @AfterClass
+    public static void tearDownTestNetworkAfterClass() throws Exception {
+        sCM.unregisterNetworkCallback(sTunNetworkCallback);
+
+        sTNM.teardownTestNetwork(sTunNetwork);
+        sTunFd.close();
+
+        InstrumentationRegistry.getInstrumentation()
+                .getUiAutomation()
+                .dropShellPermissionIdentity();
+    }
+}

tests/cts/net/ipsec/src/android/net/ipsec/ike/cts/TestNetworkUtils.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.ipsec.ike.cts;
+
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_TRUSTED;
+import static android.net.NetworkCapabilities.TRANSPORT_TEST;
+
+import android.net.ConnectivityManager;
+import android.net.Network;
+import android.net.NetworkRequest;
+import android.net.TestNetworkManager;
+import android.os.IBinder;
+import android.os.RemoteException;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
+
+// TODO(b/148689509): Share this class with net CTS test (e.g. IpSecManagerTunnelTest)
+public class TestNetworkUtils {
+    private static final int TIMEOUT_MS = 500;
+
+    /** Callback to receive requested test network. */
+    public static class TestNetworkCallback extends ConnectivityManager.NetworkCallback {
+        private final CompletableFuture<Network> futureNetwork = new CompletableFuture<>();
+
+        @Override
+        public void onAvailable(Network network) {
+            futureNetwork.complete(network);
+        }
+
+        public Network getNetworkBlocking() throws Exception {
+            return futureNetwork.get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
+        }
+    }
+
+    /**
+     * Set up test network.
+     *
+     * <p>Caller MUST have MANAGE_TEST_NETWORKS permission to use this method.
+     *
+     * @param connMgr ConnectivityManager to request network.
+     * @param testNetworkMgr TestNetworkManager to set up test network.
+     * @param ifname the name of the interface to be used for the Network LinkProperties.
+     * @param binder a binder object guarding the lifecycle of this test network.
+     * @return TestNetworkCallback to retrieve the test network.
+     * @throws RemoteException if test network setup failed.
+     * @see android.net.TestNetworkManager
+     */
+    public static TestNetworkCallback setupAndGetTestNetwork(
+            ConnectivityManager connMgr,
+            TestNetworkManager testNetworkMgr,
+            String ifname,
+            IBinder binder)
+            throws RemoteException {
+        NetworkRequest nr =
+                new NetworkRequest.Builder()
+                        .addTransportType(TRANSPORT_TEST)
+                        .removeCapability(NET_CAPABILITY_TRUSTED)
+                        .removeCapability(NET_CAPABILITY_NOT_VPN)
+                        .setNetworkSpecifier(ifname)
+                        .build();
+
+        TestNetworkCallback cb = new TestNetworkCallback();
+        connMgr.requestNetwork(nr, cb);
+
+        // Setup the test network after network request is filed to prevent Network from being
+        // reaped due to no requests matching it.
+        testNetworkMgr.setupTestNetwork(ifname, binder);
+
+        return cb;
+    }
+}