1 /* 2 * Copyright (C) 2021 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 #ifndef HDC_CHANNEL_H 16 #define HDC_CHANNEL_H 17 #include "common.h" 18 19 namespace Hdc { 20 class HdcChannelBase { 21 public: 22 HdcChannelBase(const bool serverOrClient, const string &addrString, uv_loop_t *loopMainIn); 23 virtual ~HdcChannelBase(); 24 HChannel AdminChannel(const uint8_t op, const uint32_t channelId, HChannel hInput); 25 static void AllocCallback(uv_handle_t *handle, size_t sizeWanted, uv_buf_t *buf); 26 static void ReadStream(uv_stream_t *tcp, ssize_t nread, const uv_buf_t *buf); 27 void PushAsyncMessage(const uint32_t channelId, const uint8_t method, const void *data, const int dataSize); 28 void WorkerPendding(); 29 void FreeChannel(const uint32_t channelId); 30 void EchoToAllChannelsViaSessionId(uint32_t targetSessionId, const string &echo); 31 vector<uint8_t> GetChannelHandshake(string &connectKey) const; 32 void SendWithCmd(const uint32_t channelId, const uint16_t commandFlag, uint8_t *bufPtr, const int size); 33 public: 34 std::atomic<int> queuedPackages; 35 protected: 36 struct ChannelHandShake { 37 char banner[12]; // must first index 38 union { 39 uint32_t channelId; 40 char connectKey[MAX_CONNECTKEY_SIZE]; 41 }; 42 char version[BUF_SIZE_TINY] = { 0 }; 43 } __attribute__((packed)); 44 uint32_t MallocChannel(HChannel *hOutChannel); ReadChannel(HChannel hChannel,uint8_t * bufPtr,const int bytesIO)45 virtual int ReadChannel(HChannel hChannel, uint8_t *bufPtr, const int bytesIO) 46 { 47 return 0; 48 } NotifyInstanceChannelFree(HChannel hChannel)49 virtual void NotifyInstanceChannelFree(HChannel hChannel) {}; 50 void Send(const uint32_t channelId, uint8_t *bufPtr, const int size); 51 void SendChannel(HChannel hChannel, uint8_t *bufPtr, const int size, const uint16_t commandFlag = 0); 52 void SendChannelWithCmd(HChannel hChannel, const uint16_t commandFlag, uint8_t *bufPtr, const int size); 53 void EchoToClient(HChannel hChannel, uint8_t *bufPtr, const int size); ChannelSendSessionCtrlMsg(vector<uint8_t> & ctrlMsg,uint32_t sessionId)54 virtual bool ChannelSendSessionCtrlMsg(vector<uint8_t> &ctrlMsg, uint32_t sessionId) 55 { 56 return true; // just server use 57 } 58 59 string channelHostPort; 60 string channelHost; 61 uint16_t channelPort; 62 uv_loop_t *loopMain; 63 bool isServerOrClient; // true is server, false is client 64 uv_rwlock_t mainAsync; 65 uv_async_t asyncMainLoop; 66 list<void *> lstMainThreadOP; 67 68 private: 69 static void MainAsyncCallback(uv_async_t *handle); 70 static void FileCmdWriteCallback(uv_write_t *req, int status); 71 static void WriteCallback(uv_write_t *req, int status); 72 static void AsyncMainLoopTask(uv_idle_t *handle); 73 static void FreeChannelOpeate(uv_timer_t *handle); 74 static void FreeChannelFinally(uv_idle_t *handle); 75 void ClearChannels(); 76 void FreeChannelContinue(HChannel hChannel); 77 bool SetChannelTCPString(const string &addrString); 78 uint32_t GetChannelPseudoUid(); 79 80 uv_rwlock_t lockMapChannel; // protect mapChannel 81 map<uint32_t, HChannel> mapChannel; 82 uv_thread_t threadChanneMain; 83 84 private: 85 void DispMntnInfo(HChannel hChannel); 86 }; 87 } // namespace Hdc 88 89 #endif // HDC_CHANNEL_H 90