Z5NTS功能之netstat（网络工具）

2019-11-17 04:50:37

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Z5NTS功能之netstat（网络工具） Author:zfive5(zhaozidong)Eamil :zfive5@yahoo.com.cn 出于回忆一下网络编程的目的，开始写一个类似nettools的网络工具，当然不能像nettools那样面面俱到，现在只能完成简单的netstat功能，大部分实现来自于<<windows网络编程实例>>和网络，以前真的没有注重到iphlpapi.dll有如此强大的功能! 功能界面如下： Z5NTS功能之netstat（网络工具）

核心代码如下:typedef DWord (WINAPI *Z5AllocateAndGetTcpExTableFromStack)(PMIB_TCPTABLEEX *pTcpTable,BOOL            bOrder,
HANDLE          hHeap,DWORD           dwZero,DWORD           dwFlag); typedef DWORD (WINAPI *Z5AllocateAndGetUdpExTableFromStack)( PMIB_UDPTABLEEX *pUdpTable, BOOL            bOrder, HANDLE          hHeap, DWORD           dwZero, DWORD           dwFlag ); strUCt     ZF5NTSLook_S lineS;m_Line.clear(); Z5AllocateAndGetTcpExTableFromStack pAllocateAndGetTcpExTableFromStack;Z5AllocateAndGetUdpExTableFromStack pAllocateAndGetUdpExTableFromStack; char szBUF[1024];HMODULE hM=NULL;hM=LoadLibrary("iphlpapi.dll");if(hM==NULL){   return -1;}    pAllocateAndGetTcpExTableFromStack=(Z5AllocateAndGetTcpExTableFromStack)GetPRocAddress(hM,"AllocateAndGetTcpExTableFromStack");
pAllocateAndGetUdpExTableFromStack=(Z5AllocateAndGetUdpExTableFromStack)GetProcAddress(hM,"AllocateAndGetUdpExTableFromStack"); PMIB_TCPTABLEEX ptcpmib=NULL;DWORD      dwSize=0; //TCPif(pAllocateAndGetTcpExTableFromStack(&ptcpmib,TRUE,GetProcessHeap(),2,2)!=NO_ERROR){   return -1;} UINT i=0;for(i=0;i<       ptcpmib->dwNumEntries;i++){    lineS.szLocal="";    lineS.szName="";    lineS.szRemote="";    lineS.szState="";    lineS.szType="";    lineS.dwPID=NULL;     switch(ptcpmib->table[i].dwState)    {     case MIB_TCP_STATE_CLOSED:        lineS.szState="CLOSED";       break;     case MIB_TCP_STATE_LISTEN:       lineS.szState="LISTEN";       break;
     case MIB_TCP_STATE_SYN_SENT:       lineS.szState="SYN_SENT";       break;     case MIB_TCP_STATE_SYN_RCVD:       lineS.szState="SYN_RCVD";       break;     case MIB_TCP_STATE_ESTAB:       lineS.szState="ESTAB";       break;     case MIB_TCP_STATE_FIN_WAIT1:       lineS.szState="FIN_WAIT1";       break;     case MIB_TCP_STATE_FIN_WAIT2:       lineS.szState="FIN_WAIT2";       break;     case MIB_TCP_STATE_CLOSE_WAIT:       lineS.szState="CLOSE_WAIT";       break;     case MIB_TCP_STATE_CLOSING:       lineS.szState="CLOSING";       break;     case MIB_TCP_STATE_LAST_ACK:       lineS.szState="LAST_ACK";       break;     case MIB_TCP_STATE_TIME_WAIT:
        lineS.szState="TIME_WAIT";       break;     case MIB_TCP_STATE_DELETE_TCB:       lineS.szState="DELETE_TCB";       break;     default:        lineS.szState="UNKNOWN";       break;     }      struct in_addr locIP;     struct in_addr RemIP;      locIP.s_addr=ptcpmib->table[i].dwLocalAddr;     RemIP.s_addr=ptcpmib->table[i].dwRemoteAddr;      sprintf(szBUF,"%s:%u",inet_ntoa(locIP),ntohs(ptcpmib->table[i].dwLocalPort));     lineS.szLocal=szBUF;      if(strcmp(lineS.szState.c_str(),"LISTEN")!=0)     {       sprintf(szBUF,"%s:%u",inet_ntoa(RemIP),ntohs(ptcpmib->table[i].dwRemotePort));     }     else     {       sprintf(szBUF,"%s:%u",inet_ntoa(RemIP),0);
     }      lineS.szRemote =szBUF;     lineS.szType="TCP";     lineS.dwPID=ptcpmib->table[i].dwProcessId;     m_Line.push_back(lineS);} //UDPPMIB_UDPTABLEEX pudpmib=NULL;dwSize=0;if(pAllocateAndGetUdpExTableFromStack(&pudpmib,TRUE,GetProcessHeap(),2,2)!=NO_ERROR){   return -1;} for(i=0;i<       pudpmib->dwNumEntries;i++){    struct in_addr locIP;     lineS.szLocal="";    lineS.szName="";    lineS.szRemote="";    lineS.szState="";    lineS.szType="";    lineS.dwPID=NULL;     locIP.s_addr=pudpmib->table[i].dwLocalAddr;    sprintf(szBUF,"%s:%u",inet_ntoa(locIP),ntohs(pudpmib->table[i].dwLocalPort));    lineS.szLocal=szBUF;
    lineS.szType="UDP";    lineS.dwPID=pudpmib->table[i].dwProcessId;    m_Line.push_back(lineS);} //SnapHANDLE hProcessSnap=::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);if(hProcessSnap==INVALID_HANDLE_VALUE){   return -1;} for(i=0;i<m_Line.size();i++){   string strName;   PROCESSENTRY32 proEn;   proEn.dwSize=sizeof(proEn);   strName="*.???";   if(::Process32First(hProcessSnap,&proEn))   {     do      {        if(proEn.th32ProcessID==m_Line[i].dwPID)       {          m_Line[i].szName=proEn.szExeFile;          break;       }      } while(::Process32Next(hProcessSnap,&proEn));   }}
       ::CloseHandle(hProcessSnap); if(ptcpmib!=NULL) LocalFree(ptcpmib);if(pudpmib!=NULL) LocalFree(pudpmib);if(hM!=NULL)      FreeLibrary(hM); return 0;  下次要在z5nts上加上发送所有类型的icmp数据包的功能：）

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