Windows兼容XP-Win10的CPing工具类

#include <winsock2.h>
#include <iphlpapi.h>
#include <icmpapi.h>
#include <stdio.h>

//#pragma comment(lib, "iphlpapi.lib")
#pragma comment(lib, "ws2_32.lib")

class CPing {
    typedef HANDLE(WINAPI*PFN_IcmpCreateFile)();
    typedef DWORD(WINAPI*PFN_IcmpSendEcho)(
        HANDLE                 IcmpHandle,
        IPAddr                 DestinationAddress,
        LPVOID                 RequestData,
        WORD                   RequestSize,
        PIP_OPTION_INFORMATION RequestOptions,
        LPVOID                 ReplyBuffer,
        DWORD                  ReplySize,
        DWORD                  Timeout
    );
    typedef DWORD(WINAPI*PFN_IcmpParseReplies)(
        LPVOID ReplyBuffer,
        DWORD  ReplySize
    );
    typedef BOOL(WINAPI*PFN_IcmpCloseHandle)(
        HANDLE IcmpHandle
    );
public:
    CPing() {
        hModule = GetModuleHandle(TEXT("IPHLPAPI"));
        if (hModule == nullptr)
        {
            hModule = LoadLibrary(TEXT("IPHLPAPI"));
            if (hModule != nullptr)
            {
                bLoad = true;
            }
            else
            {
                hModule = GetModuleHandle(TEXT("ICMP"));
                if (hModule == nullptr)
                {
                    hModule = LoadLibrary(TEXT("ICMP"));
                    if (hModule != nullptr)
                    {
                        bLoad = true;
                        
                    }
                }
            }
        }
        if (hModule != nullptr)
        {
            fnIcmpCreateFile = (PFN_IcmpCreateFile)GetProcAddress(hModule, "IcmpCreateFile");
            fnIcmpSendEcho = (PFN_IcmpSendEcho)GetProcAddress(hModule, "IcmpSendEcho");
            fnIcmpParseReplies = (PFN_IcmpParseReplies)GetProcAddress(hModule, "IcmpParseReplies");
            fnIcmpCloseHandle = (PFN_IcmpCloseHandle)GetProcAddress(hModule, "IcmpCloseHandle");
        }
    }
    ~CPing() {
        if (bLoad == true)
        {
            fnIcmpCreateFile = nullptr;
            fnIcmpSendEcho = nullptr;
            fnIcmpParseReplies = nullptr;
            fnIcmpCloseHandle = nullptr;
            FreeLibrary(hModule);
            hModule = nullptr;
            bLoad = false;
        }
    }

private:
    bool bLoad = false;
    HMODULE hModule = nullptr;
    PFN_IcmpCreateFile fnIcmpCreateFile = nullptr;
    PFN_IcmpSendEcho fnIcmpSendEcho = nullptr;
    PFN_IcmpParseReplies fnIcmpParseReplies = nullptr;
    PFN_IcmpCloseHandle fnIcmpCloseHandle = nullptr;
    bool IsAvailable() 
    {
        return ((fnIcmpCreateFile != nullptr) && (fnIcmpSendEcho != nullptr) && (fnIcmpParseReplies != nullptr) && (fnIcmpCloseHandle != nullptr));
    }
public:
    static bool ping_main(const std::string& ip) 
    {
        bool result = false;
        DWORD dwRet = 0;
        // Declare and initialize variables
        HANDLE hIcmpFile = INVALID_HANDLE_VALUE;
        unsigned long ipaddr = INADDR_NONE;
        char SendData[4] = "ACK";
        DWORD ReplySize = sizeof(ICMP_ECHO_REPLY) + sizeof(SendData);
        BYTE ReplyBuffer[sizeof(ICMP_ECHO_REPLY) + sizeof(SendData)] = { 0 };
        
        if (Inst()->IsAvailable())
        {
            // Validate the parameters
            ipaddr = inet_addr(ip.c_str());
            if (ipaddr == INADDR_NONE) {
                return false;
            }

            hIcmpFile = Inst()->fnIcmpCreateFile();
            if (hIcmpFile != INVALID_HANDLE_VALUE)
            {
                dwRet = Inst()->fnIcmpSendEcho(hIcmpFile, ipaddr, SendData, sizeof(SendData), NULL, ReplyBuffer, ReplySize, 1000);
                if (dwRet != 0)
                {
                    PICMP_ECHO_REPLY pEchoReply = (PICMP_ECHO_REPLY)ReplyBuffer;
                    if (pEchoReply->Status == IP_SUCCESS)
                    {
                        result = true;
                    }
                }
                Inst()->fnIcmpCloseHandle(hIcmpFile);
            }
        }
        return result;
    }
public:
    static CPing* Inst()
    {
        static CPing CPingInstance;
        return &CPingInstance;
    }
};