1 // 2 // Copyright (C) 2015 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #ifndef SHILL_DNS_SERVER_PROXY_H_ 18 #define SHILL_DNS_SERVER_PROXY_H_ 19 20 #include <string> 21 #include <vector> 22 23 #include <base/macros.h> 24 #include <base/memory/weak_ptr.h> 25 26 namespace shill { 27 28 class ProcessManager; 29 30 // This setup a DNS server proxy to handle/redirect local DNS requests. 31 // Proxy is setup using dnsmasq. 32 class DNSServerProxy { 33 public: 34 DNSServerProxy(const std::vector<std::string>& dns_servers); 35 virtual ~DNSServerProxy(); 36 37 // Start dnsmasq process for serving local DNS requests. 38 virtual bool Start(); 39 40 private: 41 // Stop dnsmasq process. 42 void Stop(); 43 44 // Invoked when dnsmasq process exits. 45 void OnProcessExited(int exit_status); 46 47 ProcessManager* process_manager_; 48 int pid_; 49 std::vector<std::string> dns_servers_; 50 51 base::WeakPtrFactory<DNSServerProxy> weak_factory_{this}; 52 DISALLOW_COPY_AND_ASSIGN(DNSServerProxy); 53 }; 54 55 } // namespace shill 56 57 #endif // SHILL_DNS_SERVER_PROXY_H_ 58