Introduce VPN support.
This change sets up the basic routing rules for VPNs. It doesn't yet handle UID
ranges (that are meant to apply to the VPN) correctly. That's forthcoming in
other CLs.
Bug: 15409918
Change-Id: I284de04f176dcf6ba702361de6a614266256d04e
diff --git a/server/VirtualNetwork.cpp b/server/VirtualNetwork.cpp
new file mode 100644
index 0000000..11998da
--- /dev/null
+++ b/server/VirtualNetwork.cpp
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#include "VirtualNetwork.h"
+
+#include "RouteController.h"
+
+#define LOG_TAG "Netd"
+#include "log/log.h"
+
+VirtualNetwork::VirtualNetwork(unsigned netId, uid_t /*ownerUid*/) : Network(netId) {
+}
+
+VirtualNetwork::~VirtualNetwork() {
+}
+
+int VirtualNetwork::addInterface(const std::string& interface) {
+ if (hasInterface(interface)) {
+ return 0;
+ }
+ if (int ret = RouteController::addInterfaceToVpn(mNetId, interface.c_str())) {
+ ALOGE("failed to add interface %s to VPN netId %u", interface.c_str(), mNetId);
+ return ret;
+ }
+ mInterfaces.insert(interface);
+ return 0;
+}
+
+int VirtualNetwork::removeInterface(const std::string& interface) {
+ if (!hasInterface(interface)) {
+ return 0;
+ }
+ if (int ret = RouteController::removeInterfaceFromVpn(mNetId, interface.c_str())) {
+ ALOGE("failed to remove interface %s from VPN netId %u", interface.c_str(), mNetId);
+ return ret;
+ }
+ mInterfaces.erase(interface);
+ return 0;
+}