1 /* 2 * Copyright (C) 2010 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 #pragma once 18 19 #include <string> 20 21 #include <netd_resolv/resolv.h> // android_net_context 22 #include <sysutils/FrameworkCommand.h> 23 #include <sysutils/FrameworkListener.h> 24 25 struct addrinfo; 26 struct hostent; 27 28 namespace android { 29 namespace net { 30 31 class DnsProxyListener : public FrameworkListener { 32 public: 33 DnsProxyListener(); ~DnsProxyListener()34 virtual ~DnsProxyListener() {} 35 36 static constexpr const char* SOCKET_NAME = "dnsproxyd"; 37 38 private: 39 class GetAddrInfoCmd : public FrameworkCommand { 40 public: 41 GetAddrInfoCmd(); ~GetAddrInfoCmd()42 virtual ~GetAddrInfoCmd() {} 43 int runCommand(SocketClient* c, int argc, char** argv) override; 44 }; 45 46 /* ------ getaddrinfo ------*/ 47 class GetAddrInfoHandler { 48 public: 49 // Note: All of host, service, and hints may be NULL 50 GetAddrInfoHandler(SocketClient* c, char* host, char* service, addrinfo* hints, 51 const android_net_context& netcontext); 52 ~GetAddrInfoHandler(); 53 54 void run(); 55 56 private: 57 void doDns64Synthesis(int32_t* rv, addrinfo** res); 58 59 SocketClient* mClient; // ref counted 60 char* mHost; // owned. TODO: convert to std::string. 61 char* mService; // owned. TODO: convert to std::string. 62 addrinfo* mHints; // owned 63 android_net_context mNetContext; 64 }; 65 66 /* ------ gethostbyname ------*/ 67 class GetHostByNameCmd : public FrameworkCommand { 68 public: 69 GetHostByNameCmd(); ~GetHostByNameCmd()70 virtual ~GetHostByNameCmd() {} 71 int runCommand(SocketClient* c, int argc, char** argv) override; 72 }; 73 74 class GetHostByNameHandler { 75 public: 76 GetHostByNameHandler(SocketClient* c, char* name, int af, 77 const android_net_context& netcontext); 78 ~GetHostByNameHandler(); 79 80 void run(); 81 82 private: 83 void doDns64Synthesis(int32_t* rv, hostent** hpp); 84 85 SocketClient* mClient; // ref counted 86 char* mName; // owned. TODO: convert to std::string. 87 int mAf; 88 android_net_context mNetContext; 89 }; 90 91 /* ------ gethostbyaddr ------*/ 92 class GetHostByAddrCmd : public FrameworkCommand { 93 public: 94 GetHostByAddrCmd(); ~GetHostByAddrCmd()95 virtual ~GetHostByAddrCmd() {} 96 int runCommand(SocketClient* c, int argc, char** argv) override; 97 }; 98 99 class GetHostByAddrHandler { 100 public: 101 GetHostByAddrHandler(SocketClient* c, void* address, int addressLen, int addressFamily, 102 const android_net_context& netcontext); 103 ~GetHostByAddrHandler(); 104 105 void run(); 106 107 private: 108 void doDns64ReverseLookup(hostent** hpp); 109 110 SocketClient* mClient; // ref counted 111 void* mAddress; // address to lookup; owned 112 int mAddressLen; // length of address to look up 113 int mAddressFamily; // address family 114 android_net_context mNetContext; 115 }; 116 117 /* ------ resnsend ------*/ 118 class ResNSendCommand : public FrameworkCommand { 119 public: 120 ResNSendCommand(); ~ResNSendCommand()121 virtual ~ResNSendCommand() {} 122 int runCommand(SocketClient* c, int argc, char** argv) override; 123 }; 124 125 class ResNSendHandler { 126 public: 127 ResNSendHandler(SocketClient* c, std::string msg, uint32_t flags, 128 const android_net_context& netcontext); 129 ~ResNSendHandler(); 130 131 void run(); 132 133 private: 134 SocketClient* mClient; // ref counted 135 std::string mMsg; 136 uint32_t mFlags; 137 android_net_context mNetContext; 138 }; 139 140 /* ------ getdnsnetid ------*/ 141 class GetDnsNetIdCommand : public FrameworkCommand { 142 public: 143 GetDnsNetIdCommand(); ~GetDnsNetIdCommand()144 virtual ~GetDnsNetIdCommand() {} 145 int runCommand(SocketClient* c, int argc, char** argv) override; 146 }; 147 }; 148 149 } // namespace net 150 } // namespace android 151