Implement TestNetworkService
This change adds the relevant JNI implementations, as well as the
implementations and NetworkAgent tracking code in the TestNetworkService.
TestNetworkService (And Manager) is designed for use exclusively in
testing code, allowing for the creation of TUN and IPsec backed networks
in test code. Specifically, this allows for testing of components such
as IP, DHCP, or DNS clients, as well as kernel features such as IPsec.
Access to the TestNetworkService will be conditioned upon the
MANAGE_TEST_NETWORKS permission that will be granted only to the Shell.
CTS will use UiAutomation.adoptShellPermissionIdentity() to gain the
ability to use this service.
Bug: 72950854
Test: CTS tests passing
Change-Id: Ie66ba631a548b5f9c6b5ed0797582f86688debe5
diff --git a/services/core/jni/Android.bp b/services/core/jni/Android.bp
index 6735ab4..07a6c70 100644
--- a/services/core/jni/Android.bp
+++ b/services/core/jni/Android.bp
@@ -38,6 +38,7 @@
"com_android_server_SerialService.cpp",
"com_android_server_storage_AppFuseBridge.cpp",
"com_android_server_SystemServer.cpp",
+ "com_android_server_TestNetworkService.cpp",
"com_android_server_tv_TvUinputBridge.cpp",
"com_android_server_tv_TvInputHal.cpp",
"com_android_server_vr_VrManagerService.cpp",
diff --git a/services/core/jni/com_android_server_TestNetworkService.cpp b/services/core/jni/com_android_server_TestNetworkService.cpp
new file mode 100644
index 0000000..b90ff23
--- /dev/null
+++ b/services/core/jni/com_android_server_TestNetworkService.cpp
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#define LOG_NDEBUG 0
+
+#define LOG_TAG "TestNetworkServiceJni"
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/if.h>
+#include <linux/if_tun.h>
+#include <linux/ipv6_route.h>
+#include <linux/route.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <log/log.h>
+
+#include "netutils/ifc.h"
+
+#include "jni.h"
+#include <android-base/stringprintf.h>
+#include <android-base/unique_fd.h>
+#include <nativehelper/JNIHelp.h>
+#include <nativehelper/ScopedUtfChars.h>
+
+namespace android {
+
+//------------------------------------------------------------------------------
+
+static void throwException(JNIEnv* env, int error, const char* action, const char* iface) {
+ const std::string& msg =
+ android::base::StringPrintf("Error %s %s: %s", action, iface, strerror(error));
+
+ jniThrowException(env, "java/lang/IllegalStateException", msg.c_str());
+}
+
+static int createTunInterface(JNIEnv* env, const char* iface) {
+ base::unique_fd tun(open("/dev/tun", O_RDWR | O_NONBLOCK));
+ ifreq ifr{};
+
+ // Allocate interface.
+ ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
+ strlcpy(ifr.ifr_name, iface, IFNAMSIZ);
+ if (ioctl(tun.get(), TUNSETIFF, &ifr)) {
+ throwException(env, errno, "allocating", ifr.ifr_name);
+ return -1;
+ }
+
+ // Activate interface using an unconnected datagram socket.
+ base::unique_fd inet6CtrlSock(socket(AF_INET6, SOCK_DGRAM, 0));
+ ifr.ifr_flags = IFF_UP;
+
+ if (ioctl(inet6CtrlSock.get(), SIOCSIFFLAGS, &ifr)) {
+ throwException(env, errno, "activating", ifr.ifr_name);
+ return -1;
+ }
+
+ return tun.release();
+}
+
+//------------------------------------------------------------------------------
+
+static jint create(JNIEnv* env, jobject /* thiz */, jstring jIface) {
+ ScopedUtfChars iface(env, jIface);
+ if (!iface.c_str()) {
+ jniThrowNullPointerException(env, "iface");
+ return -1;
+ }
+
+ int tun = createTunInterface(env, iface.c_str());
+
+ // Any exceptions will be thrown from the createTunInterface call
+ return tun;
+}
+
+//------------------------------------------------------------------------------
+
+static const JNINativeMethod gMethods[] = {
+ {"jniCreateTun", "(Ljava/lang/String;)I", (void*)create},
+};
+
+int register_android_server_TestNetworkService(JNIEnv* env) {
+ return jniRegisterNativeMethods(env, "com/android/server/TestNetworkService", gMethods,
+ NELEM(gMethods));
+}
+
+}; // namespace android
diff --git a/services/core/jni/onload.cpp b/services/core/jni/onload.cpp
index bb6e684..83347bb 100644
--- a/services/core/jni/onload.cpp
+++ b/services/core/jni/onload.cpp
@@ -43,6 +43,7 @@
int register_android_server_location_GnssLocationProvider(JNIEnv* env);
int register_android_server_connectivity_Vpn(JNIEnv* env);
int register_android_server_connectivity_tethering_OffloadHardwareInterface(JNIEnv*);
+int register_android_server_TestNetworkService(JNIEnv* env);
int register_android_server_devicepolicy_CryptoTestHelper(JNIEnv*);
int register_android_server_hdmi_HdmiCecController(JNIEnv* env);
int register_android_server_tv_TvUinputBridge(JNIEnv* env);
@@ -88,6 +89,7 @@
register_android_server_location_GnssLocationProvider(env);
register_android_server_connectivity_Vpn(env);
register_android_server_connectivity_tethering_OffloadHardwareInterface(env);
+ register_android_server_TestNetworkService(env);
register_android_server_devicepolicy_CryptoTestHelper(env);
register_android_server_ConsumerIrService(env);
register_android_server_BatteryStatsService(env);