枚举局域网计算机

最新推荐文章于 2022-07-17 20:17:34 发布

缔峰泽科技

最新推荐文章于 2022-07-17 20:17:34 发布

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文章标签： buffer struct list null delete c

void CenumhostsDlg::OnBnClickedEnum()
{
// TODO: 在此添加控件通知处理程序代码
GetDlgItem(IDC_ENUM)->EnableWindow(false);

CStringArray list;
EnumHosts(list);
CListBox* pList=(CListBox*)GetDlgItem(IDC_LIST);
pList->ResetContent();
pList->AddString("枚举结果如下");
for(int i=0;i<list.GetSize();i++)
pList->AddString(list.GetAt(i));

GetDlgItem(IDC_ENUM)->EnableWindow(true);

}

void CenumhostsDlg::EnumHosts(CStringArray& list)
{
list.RemoveAll();

CString strTemp;
struct hostent *host;
struct in_addr* ptr;
DWORD dwScope=RESOURCE_CONTEXT;
NETRESOURCE *NetResource=NULL;
HANDLE hEnum;
WNetOpenEnum(dwScope,NULL,NULL,NULL,&hEnum);

WSADATA wsaData;
WSAStartup(MAKEWORD(2,2),&wsaData);
if(hEnum)
{
  DWORD Count=0xFFFFFFFF;
  DWORD BufferSize=8192;
  LPVOID Buffer=new char[8192];

  WNetEnumResource(hEnum,&Count,Buffer,&BufferSize);
  NetResource=(NETRESOURCE*)Buffer;
  char szHostName[200];
  for(unsigned int i=0;i<BufferSize/sizeof(NETRESOURCE);i++,NetResource++)
  {
   if(NetResource->dwUsage==RESOURCEUSAGE_CONTAINER && NetResource->dwType==RESOURCETYPE_ANY)
   {
   // if(NetResource->lpRemoteName)
   // {
     CString strFullName=NetResource->lpRemoteName;
     if(0==strFullName.Left(2).Compare("////"))
      strFullName=strFullName.Right(strFullName.GetLength()-2);
     //gethostname(szHostName,strlen(szHostName));
     //TRACE("%s/n",szHostName);
     host=gethostbyname(strFullName);
     if(host==NULL)continue;
     ptr=(struct in_addr*)host->h_addr_list[0];

     int a=ptr->S_un.S_un_b.s_b1;
     int b=ptr->S_un.S_un_b.s_b2;
     int c=ptr->S_un.S_un_b.s_b3;
     int d=ptr->S_un.S_un_b.s_b4;
     strTemp.Format("%s-->%d.%d.%d.%d",strFullName,a,b,c,d);
     list.Add(strTemp);
   // }
   }
  }
  delete Buffer;
  WNetCloseEnum(hEnum);
}
WSACleanup();