add front demo in this project

LFtid1056/cloudfront/code/worker.h

@@ -0,0 +1,70 @@
+#ifndef WORKER_H
+#define WORKER_H
+
+#include <string>
+#include <vector>
+#include <thread>
+#include <mutex>
+#include <atomic>
+#include <iostream>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <cstdlib>
+#include <memory>
+
+/////////////////////////////////////////////////////////////////////////////
+
+#include "interface.h"
+
+/////////////////////////////////////////////////////////////////////////////
+
+class Worker {
+public:
+    Worker(Front* front);
+    ~Worker();
+    bool startServer(int port);
+    void stopServer();
+    void handleViewLogCommand(const std::string& command, int clientFD);
+    void printLedgerinshell(const terminal_dev& dev, int fd);
+    void ledger(const std::string& terminal_id, int fd);
+    void value_print(const std::string& variableName, int clientFD);
+    void sendStr(int fd, const std::string& s);
+    void printPrompt(int clientFD);
+
+private:
+    Front* m_front;
+    
+    std::mutex testMutex;
+    int listenFD;
+    std::atomic<bool> running;
+    std::thread serverThread;
+    std::vector<std::string> commandHistory;
+    int historyIndex;
+    std::string currentCommand;
+    bool stopViewLog;
+    bool g_stopTelnetTest;
+    static constexpr unsigned char IAC = 255;
+    static constexpr unsigned char WILL = 251;
+    static constexpr unsigned char WONT = 252;
+    static constexpr unsigned char TELDO = 253;
+    static constexpr unsigned char DONT = 254;
+    static constexpr unsigned char TELOPT_ECHO = 1;
+    static constexpr unsigned char TELOPT_SUPPRESS_GO_AHEAD = 3;
+    static constexpr unsigned char TELOPT_LINEMODE = 34;
+
+    void acceptLoop();
+    void sessionThread(int clientFD);
+    void sendTelnetNegotiation(int clientFD);
+    void sendBytes(int fd, const char* buf, int len);
+    void setTestNum(int num);
+    void setTestType(int type);
+    void setTestlog(bool flag);
+    void doPeriodicTask();
+    void processCommand(const std::string &cmd, int clientFD);
+    void handleUpArrow(int fd);
+    void handleDownArrow(int fd);
+    std::string trim(const std::string& s);
+};
+
+#endif // WORKER_H