[C++][Socket] 类似windows Ipconfig的小工具

    发现《Windows网络编程技术》中还是有不少很不错的东西哦，比如说类似Ipconfig的demo。贴出来学习一下。

 

#include <windows.h>
#include <iphlpapi.h>
#include <stdio.h>
#include <time.h>

void main(void) {

    DWORD Err;

    PFIXED_INFO pFixedInfo;
    DWORD FixedInfoSize = 0;

    PIP_ADAPTER_INFO pAdapterInfo, pAdapt;
    DWORD AdapterInfoSize;
    PIP_ADDR_STRING pAddrStr;

    //
    // Get the main IP configuration information for this machine using a FIXED_INFO structure
    //
    if ((Err = GetNetworkParams(NULL, &FixedInfoSize)) != 0)
    {
        if (Err != ERROR_BUFFER_OVERFLOW)
        {
            printf("GetNetworkParams sizing failed with error %d\n", Err);
            return;
        }
    }

    // Allocate memory from sizing information
    if ((pFixedInfo = (PFIXED_INFO) GlobalAlloc(GPTR, FixedInfoSize)) == NULL)
    {
        printf("Memory allocation error\n");
        return;
    }

    if ((Err = GetNetworkParams(pFixedInfo, &FixedInfoSize)) == 0)
    {
        printf("\tHost Name . . . . . . . . . : %s\n", pFixedInfo->HostName);
        printf("\tDNS Servers . . . . . . . . : %s\n", pFixedInfo->DnsServerList.IpAddress.String);
        pAddrStr = pFixedInfo->DnsServerList.Next;
        while(pAddrStr)
        {
            printf("%52s\n", pAddrStr->IpAddress.String);
            pAddrStr = pAddrStr->Next;
        }

        printf("\tNode Type . . . . . . . . . : ");
        switch (pFixedInfo->NodeType)
        {
            case 1:
                printf("%s\n", "Broadcast");
                break;
            case 2:
                printf("%s\n", "Peer to peer");
                break;
            case 4:
                printf("%s\n", "Mixed");
                break;
            case 8:
                printf("%s\n", "Hybrid");
                break;
            default:
                printf("\n");
        }

        printf("\tNetBIOS Scope ID. . . . . . : %s\n", pFixedInfo->ScopeId);
        printf("\tIP Routing Enabled. . . . . : %s\n", (pFixedInfo->EnableRouting ? "yes" : "no"));
        printf("\tWINS Proxy Enabled. . . . . : %s\n", (pFixedInfo->EnableProxy ? "yes" : "no"));
        printf("\tNetBIOS Resolution Uses DNS : %s\n", (pFixedInfo->EnableDns ? "yes" : "no"));
    } else
    {
        printf("GetNetworkParams failed with error %d\n", Err);
        return;
    }

    //
    // Enumerate all of the adapter specific information using the IP_ADAPTER_INFO structure.
    // Note:  IP_ADAPTER_INFO contains a linked list of adapter entries.
    //
    AdapterInfoSize = 0;
    if ((Err = GetAdaptersInfo(NULL, &AdapterInfoSize)) != 0)
    {
        if (Err != ERROR_BUFFER_OVERFLOW)
        {
            printf("GetAdaptersInfo sizing failed with error %d\n", Err);
            return;
        }
    }

    // Allocate memory from sizing information
    if ((pAdapterInfo = (PIP_ADAPTER_INFO) GlobalAlloc(GPTR, AdapterInfoSize)) == NULL)
    {
        printf("Memory allocation error\n");
        return;
    }

    // Get actual adapter information
    if ((Err = GetAdaptersInfo(pAdapterInfo, &AdapterInfoSize)) != 0)
    {
        printf("GetAdaptersInfo failed with error %d\n", Err);
        return;
    }

    pAdapt = pAdapterInfo;

    while (pAdapt)
    {
        switch (pAdapt->Type)
        {
            case MIB_IF_TYPE_ETHERNET:
                printf("\nEthernet adapter ");
                break;
            case MIB_IF_TYPE_TOKENRING:
                printf("\nToken Ring adapter ");
                break;
            case MIB_IF_TYPE_FDDI:
                printf("\nFDDI adapter ");
                break;
            case MIB_IF_TYPE_PPP:
                printf("\nPPP adapter ");
                break;
            case MIB_IF_TYPE_LOOPBACK:
                printf("\nLoopback adapter ");
                break;
            case MIB_IF_TYPE_SLIP:
                printf("\nSlip adapter ");
                break;
            case MIB_IF_TYPE_OTHER:
            default:
                printf("\nOther adapter ");
        }
        printf("%s:\n\n", pAdapt->AdapterName);

        printf("\tDescription . . . . . . . . : %s\n", pAdapt->Description); 

        printf("\tPhysical Address. . . . . . : ");
        for (UINT i=0; i<pAdapt->AddressLength; i++)
        {
            if (i == (pAdapt->AddressLength - 1))
                printf("%.2X\n",(int)pAdapt->Address[i]);
            else
                printf("%.2X-",(int)pAdapt->Address[i]);
        }        

        printf("\tDHCP Enabled. . . . . . . . : %s\n", (pAdapt->DhcpEnabled ? "yes" : "no"));

        pAddrStr = &(pAdapt->IpAddressList);
        while(pAddrStr)
        {
            printf("\tIP Address. . . . . . . . . : %s\n", pAddrStr->IpAddress.String);
            printf("\tSubnet Mask . . . . . . . . : %s\n", pAddrStr->IpMask.String);
            pAddrStr = pAddrStr->Next;
        }

        printf("\tDefault Gateway . . . . . . : %s\n", pAdapt->GatewayList.IpAddress.String);
        pAddrStr = pAdapt->GatewayList.Next;
        while(pAddrStr)
        {
            printf("%52s\n", pAddrStr->IpAddress.String);
            pAddrStr = pAddrStr->Next;
        }

        printf("\tDHCP Server . . . . . . . . : %s\n", pAdapt->DhcpServer.IpAddress.String);
        printf("\tPrimary WINS Server . . . . : %s\n", pAdapt->PrimaryWinsServer.IpAddress.String);
        printf("\tSecondary WINS Server . . . : %s\n", pAdapt->SecondaryWinsServer.IpAddress.String);

        struct tm *newtime;

        // Display coordinated universal time - GMT 
        newtime = gmtime(&pAdapt->LeaseObtained);   
        printf( "\tLease Obtained. . . . . . . : %s", asctime( newtime ) );

        newtime = gmtime(&pAdapt->LeaseExpires);   
        printf( "\tLease Expires . . . . . . . : %s", asctime( newtime ) );

        pAdapt = pAdapt->Next;
    }
}