1 /* 2 * Copyright (c) 2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef COMMUNICATION_NETSTACK_SOCKS5_INSTANCE_H 17 #define COMMUNICATION_NETSTACK_SOCKS5_INSTANCE_H 18 19 #include <vector> 20 #include <memory> 21 #include <mutex> 22 #include <string> 23 24 #include "net_address.h" 25 #include "proxy_options.h" 26 #include "socks5.h" 27 #include "socks5_method.h" 28 #include "socket_exec.h" 29 30 namespace OHOS { 31 namespace NetStack { 32 namespace Socks5 { 33 class Socks5Instance { 34 public: 35 Socks5Instance() = default; 36 virtual ~Socks5Instance() = default; 37 38 virtual bool Connect() = 0; 39 virtual bool RemoveHeader(void *data, size_t &len, int af); 40 virtual void AddHeader(); 41 virtual std::string GetHeader(); 42 virtual void SetHeader(std::string header); 43 virtual void Close(); 44 45 void SetSocks5Option(const std::shared_ptr<Socks5Option> &opt); 46 void SetDestAddress(const Socket::NetAddress &dest); 47 bool IsConnected() const; 48 void UpdateErrorInfo(Socks5Status status); 49 void UpdateErrorInfo(int32_t errCode, const std::string &errMessage); 50 int32_t GetErrorCode() const; 51 std::string GetErrorMessage() const; 52 void OnProxySocketError(); 53 void SetSocks5Instance(const std::shared_ptr<Socks5Instance> &socks5Inst); 54 Socket::NetAddress GetProxyBindAddress() const; 55 int GetSocketId() const; 56 Socket::SocketExec::SocketRecvCallback GetProxySocketRecvCallback() const; 57 bool ConnectProxy(); 58 void CloseSocket(); 59 60 protected: 61 bool RequestMethod(const std::vector<Socks5MethodType> &methods); 62 std::shared_ptr<Socks5Method> CreateSocks5MethodByType(Socks5MethodType type) const; 63 bool DoConnect(Socks5Command command); 64 65 int32_t socketId_{SOCKS5_INVALID_SOCKET_FD}; 66 Socket::NetAddress dest_{}; 67 std::shared_ptr<Socks5Option> options_{nullptr}; 68 std::shared_ptr<Socks5Method> method_{nullptr}; 69 Socks5AuthState state_{Socks5AuthState::INIT}; 70 Socket::NetAddress proxyBindAddr_{}; 71 int32_t doConnectCount_{}; 72 73 private: 74 int32_t errorCode_{}; 75 std::string errorMessage_{}; 76 std::shared_ptr<Socks5Instance> socks5Instance_; 77 }; 78 79 class Socks5TcpInstance final : public Socks5Instance { 80 public: 81 Socks5TcpInstance() = delete; 82 explicit Socks5TcpInstance(int32_t socketId); 83 ~Socks5TcpInstance() = default; 84 85 bool Connect(); 86 }; 87 88 class Socks5UdpInstance final : public Socks5Instance, std::enable_shared_from_this<Socks5UdpInstance> { 89 public: 90 Socks5UdpInstance() = default; 91 ~Socks5UdpInstance(); 92 93 bool Connect() override; 94 bool RemoveHeader(void *data, size_t &len, int af) override; 95 void AddHeader() override; 96 std::string GetHeader() override; 97 void SetHeader(std::string header) override; 98 void Close() override; 99 100 private: 101 bool CreateSocket(); 102 103 std::string header_; 104 }; 105 106 class Socks5TlsInstance final : public Socks5Instance { 107 public: 108 Socks5TlsInstance() = delete; 109 explicit Socks5TlsInstance(int32_t socketId); 110 ~Socks5TlsInstance() = default; 111 112 bool Connect(); 113 }; 114 } // Socks5 115 } // NetStack 116 } // OHOS 117 #endif // COMMUNICATION_NETSTACK_SOCKS5_INSTANCE_H 118