/*****************************************************************************
演示如何编程实现启用禁用网卡
Mady By ZwelL
2004.7.29
zwell@sohu.com
*****************************************************************************/
#include <windows.h>
#include <setupapi.h>
#include <tchar.h>
#include <stdio.h>
#pragma comment(lib,"ws2_32.lib")
#pragma comment(lib,"setupapi.lib")
BOOL DisableNetInterface(bool bStatus)
{
IN LPTSTR HardwareId ;
//硬件ComponentId，注册表地址：system\currentcontrolset\class\{4D36E972-E325-11CE-BFC1-08002BE10318}\0000
HardwareId="PCI\\VEN_10EC&DEV_8139&SUBSYS_813910EC" ;
DWORD NewState ;
if(bStatus)
{
NewState=DICS_DISABLE ;
//禁用
}
else
{
NewState=DICS_ENABLE ;
//启用
}
//调用ddk函数，来禁用网卡
DWORD i,err ;
BOOL Found=false ;
HDEVINFO hDevInfo ;
SP_DEVINFO_DATA spDevInfoData ;
//访问系统的硬件库
hDevInfo=SetupDiGetClassDevs(NULL,"PCI",NULL,DIGCF_ALLCLASSES|DIGCF_PRESENT);
if(hDevInfo==INVALID_HANDLE_VALUE)
{
printf("访问系统硬件出错！");
return false ;
}
//枚举硬件，获得需要的接口
spDevInfoData.cbSize=sizeof(SP_DEVINFO_DATA);
for(i=0;SetupDiEnumDeviceInfo(hDevInfo,i,&spDevInfoData);i++)
{
DWORD DataT ;
LPTSTR p,buffer=NULL ;
DWORD buffersize=0 ;
//获得硬件的属性值
while(!SetupDiGetDeviceRegistryProperty(
hDevInfo,
&spDevInfoData,
SPDRP_HARDWAREID,
&DataT,
(PBYTE)buffer,
buffersize,
&buffersize))
{
if(GetLastError()==ERROR_INVALID_DATA)
{
//不存在HardwareID. Continue.
break ;
}
else if(GetLastError()==ERROR_INSUFFICIENT_BUFFER)
{
//buffer size不对.
if(buffer)
LocalFree(buffer);
buffer=(char*)LocalAlloc(LPTR,buffersize);
}
else
{
//未知错误
goto cleanup_DeviceInfo ;
}
}
if(GetLastError()==ERROR_INVALID_DATA)
continue ;
//比较，找到和网卡ID相同的项
for(p=buffer;*p&&(p<&buffer[buffersize]);p+=lstrlen(p)+sizeof(TCHAR))
{
if(!_tcscmp(HardwareId,p))
{
//找到网卡
Found=TRUE ;
break ;
}
}
if(buffer)
LocalFree(buffer);
//如果相等
if(Found)
{
//禁用该设备
SP_PROPCHANGE_PARAMS spPropChangeParams ;
spPropChangeParams.ClassInstallHeader.cbSize=sizeof(SP_CLASSINSTALL_HEADER);
spPropChangeParams.ClassInstallHeader.InstallFunction=DIF_PROPERTYCHANGE ;
spPropChangeParams.Scope=DICS_FLAG_GLOBAL ;
spPropChangeParams.StateChange=NewState ;
//禁用：DICS_DISABLE，DICS_ENABLE启用
//
if(!SetupDiSetClassInstallParams(hDevInfo,&spDevInfoData,(SP_CLASSINSTALL_HEADER*)&spPropChangeParams,sizeof(spPropChangeParams)))
{
DWORD errorcode=GetLastError();
}
if(!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&spDevInfoData))
{
DWORD errorcode=GetLastError();
}
switch(NewState)
{
case DICS_DISABLE :
printf("成功禁用网络！");
break ;
case DICS_ENABLE :
printf("成功启用网络！");
break ;
}
break ;
}
}
//退出时，清理工作环境
cleanup_DeviceInfo :
err=GetLastError();
SetupDiDestroyDeviceInfoList(hDevInfo);
SetLastError(err);
return true ;
}
void usage(char *exefile)
{
printf("Usage:%s [-e|-d]\r\n", exefile);
printf("\t-e: Enable the network card.\r\n");
printf("\t-d: Disable the network card.\r\n");
exit(0);
}
int main(int argc,char**argv)
{
if(argc<2)
usage(argv[0]);
if(!DisableNetInterface((strstr(argv[1],"-d")>0?TRUE:FALSE)))
printf("对网卡操作失败!");
return 0;
}
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