Add ResolverController class

Added a ResolverController class that handles
the communication with the dns resolver in
netd.

Change-Id: I0f71bd516109fd942e68b3400666c7a859228372
diff --git a/ResolverController.h b/ResolverController.h
new file mode 100644
index 0000000..c6260da
--- /dev/null
+++ b/ResolverController.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+#ifndef _RESOLVER_CONTROLLER_H_
+#define _RESOLVER_CONTROLLER_H_
+
+#include <netinet/in.h>
+#include <linux/in.h>
+
+class ResolverController {
+public:
+    ResolverController() {};
+    virtual ~ResolverController() {};
+
+    int setDefaultInterface(const char* iface);
+    int setInterfaceDnsServers(const char* iface, char** servers, int numservers);
+    int setInterfaceAddress(const char* iface, struct in_addr* addr);
+    int flushDefaultDnsCache();
+    int flushInterfaceDnsCache(const char* iface);
+};
+
+#endif /* _RESOLVER_CONTROLLER_H_ */