ipconfig的C语言实现

ゞ浴缸里的玫瑰 2022-03-20 11:12 249阅读 0赞

首先，这篇文章实现了两种方法查询IP，实现[截图][Link 1]如下：

![1360425560_9615.png][]

第一种方法时调用系统命令，代码如下：

#include <cstdlib>#include <iostream>using namespace std;int main(int argc, char *argv[]){   system("ipconfig");      system("PAUSE");   return EXIT_SUCCESS;}

下面这种方法是对源码的解析：

#include <windows.h>#include <IPHlpApi.h>#include <stdio.h>#include <time.h>#include<Ipexport.h>#include<Windns.h>#pragma comment(lib,"Ws2_32")#pragma comment(lib,"Dnsapi")#define Max 10 ;//#include <winsock2.h>#pragma comment(lib,"IPHlpApi")void DoUsage(bool);void DoRelease(bool);// realizedvoid DoRenew(bool);//realizedvoid DoDisplayDns(bool);void DoFlushDns(bool);void DoAll(void);void GetInterfaceInfo(void);//LPCTSTR GetNodeTypeName(UINT nodeType);//LPCTSTR GetInterfaceTypeName(UINT InterfaceType); IP_ADAPTER_INDEX_MAP adapterInfo; PIP_INTERFACE_INFO pInfo;DWORD checkReturn;void main(int argc,char **argv){
        bool doUsage=false;bool doAll=false;bool doRelease=false;bool doRenew=false;bool doDisplayDns=false;bool doFlushDns=false;char *argument;   //store the command line codeargument=&argv[1][1];if((argc>1)&&(argv[1][0]=='/')){   if(!strcmp(argument,"?"))   {    doUsage=true;    DoUsage(doUsage);   }  if(!strcmp(argument,"all"))  {    doUsage=true;    DoAll();      }  if(!strcmp(argument,"release"))  {    doRelease=true; DoRelease(doRelease);  }  if(!strcmp(argument,"renew"))  {    doRenew=true;    DoRenew(doRenew);    }  if(!strcmp(argument,"displaydns"))  {    doDisplayDns=true;    DoDisplayDns(doDisplayDns);    }  if(!strcmp(argument,"flushdns"))  {    doFlushDns=true;    DoFlushDns(doFlushDns);    }}elseprintf("error command code!");printf("......................................");}/* get the using adapter information*/void  GetInterfaceInfo(){        ULONG outBufferLen=0;     pInfo=(IP_INTERFACE_INFO *)malloc(sizeof(IP_INTERFACE_INFO));/* Make the first call to buffer information*/   if((checkReturn=GetInterfaceInfo(pInfo,&outBufferLen))==ERROR_INSUFFICIENT_BUFFER)   {     free(pInfo);     pInfo=(IP_INTERFACE_INFO *)malloc(outBufferLen);   }/* Make the second call of GetInterfaceInfo() to get the actual data */   if((checkReturn=GetInterfaceInfo(pInfo,&outBufferLen))==NO_ERROR)   {     adapterInfo=pInfo->Adapter[0];//关键此处返回IP_ADAPTER_INDEX_MAP 用于IP更新     printf("the dapter name is: %d ",pInfo->Adapter[0].Name);     }     else  {        printf("Get the interface information occer error!");    }}/* release IP address */void DoRelease(bool doRelease){  if(doRelease)  {       GetInterfaceInfo();/**the specific action to config/release*/    if((checkReturn=IpReleaseAddress(&adapterInfo))==NO_ERROR) {     printf("the action of release IP work!"); }    else       printf("An error occured while releasing interface of %s",pInfo->Adapter[0].Name);}  else  {  printf("illegal action");  }}/** Do renew IPAddree */void DoRenew(bool doRenew){ if(doRenew) { GetInterfaceInfo(); if((checkReturn=IpRenewAddress(&adapterInfo))==NO_ERROR) {     printf("the action of release IP work!"); }    else       printf("An error occured while releasing interface of %s",pInfo->Adapter[0].Name); }  else  {  printf("illegal action");  }}/* display all information  ipconfig/all */void DoAll(void){    DWORD  returnCheckError;    PFIXED_INFO pFixedInfo;    DWORD FixedInfoSize = 0;    PIP_ADDR_STRING pAddrStr; PIP_ADAPTER_INFO pAdapt,pAdapterInfo;    if ((returnCheckError = GetNetworkParams(NULL, &FixedInfoSize)) != 0)    {        if (returnCheckError != ERROR_BUFFER_OVERFLOW)        {            printf("GetNetworkParams sizing failed with error %d\n", returnCheckError);            return;        }    }    // Allocate memory from sizing information    if ((pFixedInfo = (PFIXED_INFO) malloc( FixedInfoSize)) == NULL)    {        printf("Memory allocation error\n");        return;    }    if ((returnCheckError = 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", returnCheckError);        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.      ULONG AdapterInfoSize = 0;    if ((returnCheckError = GetAdaptersInfo(NULL, &AdapterInfoSize)) != 0)    {        if (returnCheckError != ERROR_BUFFER_OVERFLOW)        {            printf("GetAdaptersInfo sizing failed with error %d\n", returnCheckError);            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 ((returnCheckError = GetAdaptersInfo(pAdapterInfo, &AdapterInfoSize)) != 0)    {        printf("GetAdaptersInfo failed with error %d\n", returnCheckError);        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;    }}void DoUsage(bool doUsage){ if(doUsage) { printf("\nUSAGE:\n"    "    ipconfig [/? | /all | /renew [adapter] | /release [adapter] |\n"    "              /flushdns | /displaydns | /registerdns |\n"    "              /showclassid adapter |\n"    "              /setclassid adapter [classid] ]\n"    "\n"    "where\n"    "    adapter         Connection name\n"    "                   (wildcard characters * and ? allowed, see examples)\n"    "\n"    "    Options:\n"    "       /?           Display this help message\n"    "       /all         Display full configuration information.\n"    "       /release     Release the IP address for the specified adapter.\n"    "       /renew       Renew the IP address for the specified adapter.\n"    "       /flushdns    Purges the DNS Resolver cache.\n"    "       /registerdns Refreshes all DHCP leases and re-registers DNS names.\n"    "       /displaydns  Display the contents of the DNS Resolver Cache.\n"    "       /showclassid Displays all the dhcp class IDs allowed for adapter.\n"    "       /setclassid  Modifies the dhcp class id.\n"    "\n"    "The default is to display only the IP address, subnet mask and\n"    "default gateway for each adapter bound to TCP/IP.\n"    "\n"    "For Release and Renew, if no adapter name is specified, then the IP address\n"    "leases for all adapters bound to TCP/IP will be released or renewed.\n"    "\n"    "For Setclassid, if no ClassId is specified, then the ClassId is removed.\n"    "\n"    "Examples:\n"    "    > ipconfig                   ... Show information.\n"    "    > ipconfig /all              ... Show detailed information\n"    "    > ipconfig /renew            ... renew all adapters\n"    "    > ipconfig /renew EL*        ... renew any connection that has its\n"    "                                     name starting with EL\n"    "    > ipconfig /release *Con*    ... release all matching connections,\n"    "                                     eg. \"Local Area Connection 1\" or\n"    "                                         \"Local Area Connection 2\"\n");     } else { printf("ilegal code!");  }}void DoDisplayDns(bool doDisplayDns){
        if(doDisplayDns){    char hostname[256]; int iRet = 0; WSADATA wsaData;     DNS_STATUS status;               //Return value of  DnsQuery_A() function.    PDNS_RECORD pDnsRecord;  int assignBuffLenght; assignBuffLenght=(sizeof(DNS_RECORD))*Max; pDnsRecord=(DNS_RECORD*)malloc(assignBuffLenght); memset(pDnsRecord,0,assignBuffLenght); if (WSAStartup(MAKEWORD(2,1),&wsaData)) //调用Windows Sockets DLL {   printf("Winsock无法初始化!\n");  WSACleanup();  }  memset(hostname, 0, 256); iRet = gethostname(hostname, sizeof(hostname)); if(iRet != 0 ) {  printf( "get hostname error:%d\n", iRet); } printf("%s\n", hostname); LPSTR pOwnerName=hostname;      // Calling function DnsQuery to query Host or PTR records       status = DnsQuery(pOwnerName,                 //Pointer to OwnerName.                         DNS_TYPE_A,                      //Type of the record to be queried.                        DNS_QUERY_STANDARD,     // Bypasses the resolver cache on the lookup.                         NULL,                   //Contains DNS server IP address.                        &pDnsRecord,                //Resource record that contains the response.                        NULL);                     //Reserved for future use.    //  printf("The host name is %s  \n",(pDnsRecord->Data.PTR.pNameHost)); while(pDnsRecord){   printf("The host name is  %s \n",pDnsRecord->pName);   printf("the type is %d \n",pDnsRecord->wType);   printf("the lenght of data is %d \n", pDnsRecord->wDataLength);   printf(" the time to live is  %d \n", pDnsRecord-> dwTtl);   printf("the lenght of data id %d \n", pDnsRecord-> dwReserved);         pDnsRecord=pDnsRecord->pNext; }  printf("dnsCache print over");}else{
        printf("ilegal code");}}void DoFlushDns(bool){
        printf("relizing config/flushdns!");}

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[Link 1]: https://www.baidu.com/s?wd=%E6%88%AA%E5%9B%BE&tn=24004469_oem_dg&rsv_dl=gh_pl_sl_csd
[1360425560_9615.png]: https://img-my.csdn.net/uploads/201302/09/1360425560_9615.png
[https_blog.csdn.net_jiangjunshow]: https://blog.csdn.net/jiangjunshow/article/details/77338485