vc 不重启改ip

9908006 · 发表于 2010-11-25 22:45:55

看雪上某人发表的，貌似其它都可以改，就是dns有些问题，研究后发现，原来是类型有问题，改了后正常运行了

//VC-ConsoleWithApi
#include <windows.h>
#include <string>

#include <iostream>
#pragma comment(lib,"Ws2_32.lib")
using namespace std;
void GetLanAdapterName( char* szLanAdapterName );
BOOL RegIP( LPCTSTR lpszAdapterName, LPCTSTR pIPAddress, LPCTSTR pNetMask, LPCTSTR pNetGate,  LPCTSTR pDNSServer1,  LPCTSTR pDNSServer2 );
BOOL NotifyIPChange( LPCTSTR lpszAdapterName, int nIndex, LPCTSTR pIPAddress, LPCTSTR pNetMask );

int main()
{

char AdapterName[ MAX_PATH ] ="";

GetLanAdapterName( AdapterName );

RegIP( AdapterName, "172.20.10.252","255.255.255.0", "172.20.10.1", "211.136.17.107", "211.136.18.171" );

NotifyIPChange( AdapterName, 0, "172.20.10.252",  "172.20.10.1" );

return 0;
}

//读取注册表取得适配器名称
void GetLanAdapterName(char* szLanAdapterName)
{
HKEY hKey, hSubKey, hNdiIntKey;
if( ::RegOpenKeyEx( HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}", 0, KEY_READ, &hKey ) != ERROR_SUCCESS )
      return;
DWORD dwIndex = 0;
DWORD dwBufSize = 256;
DWORD dwDataType;
char szSubKey[256];
unsigned char szData[256];
while( ::RegEnumKeyEx( hKey, dwIndex++, szSubKey, &dwBufSize, NULL, NULL, NULL, NULL ) == ERROR_SUCCESS )
{
   if( ::RegOpenKeyEx( hKey, szSubKey, 0, KEY_READ, &hSubKey ) == ERROR_SUCCESS )
      {
      if( ::RegOpenKeyEx( hSubKey, "Ndi\\Interfaces", 0, KEY_READ, &hNdiIntKey ) == ERROR_SUCCESS )
      {
         dwBufSize = 256;
            if( ::RegQueryValueEx( hNdiIntKey, "LowerRange", 0, &dwDataType, szData, &dwBufSize ) == ERROR_SUCCESS )
            {
                  if( strcmp( (char*)szData, "ethernet" ) == 0 ) // 判断是不是以太网卡
            {
               dwBufSize = 256;
                     if( ::RegQueryValueEx( hSubKey, "DriverDesc", 0, &dwDataType, szData, &dwBufSize ) == ERROR_SUCCESS )
                     {
                  // szData 中便是适配器详细描述
                  dwBufSize = 256;
                        if( ::RegQueryValueEx( hSubKey, "NetCfgInstanceID", 0, &dwDataType, szData, &dwBufSize ) == ERROR_SUCCESS )
                  {
                     //szData中便是适配器名称
                     strcpy( szLanAdapterName, (const char *)szData );
                     break;
                        }
                     }
                  }
            }
            ::RegCloseKey( hNdiIntKey );
         }
      ::RegCloseKey(hSubKey);
      }
   dwBufSize = 256;
}
/* end of while */

::RegCloseKey(hKey);
}

BOOL RegIP( LPCTSTR lpszAdapterName, LPCTSTR pIPAddress, LPCTSTR pNetMask, LPCTSTR pNetGate,  LPCTSTR pDNSServer1,  LPCTSTR pDNSServer2 )
{
HKEY hKey;
string strKeyName = "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces\\";
strKeyName += lpszAdapterName;
if( ::RegOpenKeyEx( HKEY_LOCAL_MACHINE, strKeyName.c_str(), 0, KEY_WRITE, &hKey ) != ERROR_SUCCESS )
   return FALSE;

string DNSServer = pDNSServer1;
DNSServer += ",";
DNSServer += pDNSServer2;

char mszIPAddress[ 100 ];
char mszNetMask[ 100 ];
char mszNetGate[ 100 ];
char mszDNSServer[ 100 ];

strncpy( mszIPAddress, pIPAddress, 98 );
strncpy( mszNetMask, pNetMask, 98 );
strncpy( mszNetGate, pNetGate, 98 );
strncpy( mszDNSServer, DNSServer.c_str(), 98 );

int nIP, nMask, nGate, nDNSServer;

nIP = strlen( mszIPAddress );
nMask = strlen( mszNetMask );
nGate = strlen( mszNetGate );
nDNSServer = strlen( mszDNSServer );

*( mszIPAddress + nIP + 1 ) = 0x00; // REG_MULTI_SZ数据需要在后面再加个0
nIP += 2;

*( mszNetMask + nMask + 1 ) = 0x00;
nMask += 2;

*( mszNetGate + nGate + 1 ) = 0x00;
nGate += 2;

*( mszDNSServer + nDNSServer + 1 ) = 0x00;
nGate += 2;

::RegSetValueEx( hKey, "IPAddress", 0, REG_MULTI_SZ, (unsigned char*)mszIPAddress, nIP );
::RegSetValueEx( hKey, "SubnetMask", 0, REG_MULTI_SZ, (unsigned char*)mszNetMask, nMask );
::RegSetValueEx( hKey, "DefaultGateway", 0, REG_MULTI_SZ, (unsigned char*)mszNetGate, nGate );
::RegSetValueEx( hKey, "NameServer", 0, REG_SZ, (unsigned char*)mszDNSServer, nDNSServer );

::RegCloseKey(hKey);

return TRUE;
}

//未公开函数DhcpNotifyConfigChange位于 dhcpcsvc.dll中.
//原型声明
typedef BOOL ( CALLBACK* DHCPNOTIFYPROC) (
   LPWSTR lpwszServerName,    // 本地机器为NULL
   LPWSTR lpwszAdapterName, // 适配器名称
   BOOL bNewIpAddress,       // TRUE表示更改IP
   DWORD dwIpIndex,       // 指明第几个IP地址，如果只有该接口只有一个IP地址则为0
   DWORD dwIpAddress,       // IP地址
   DWORD dwSubNetMask,       // 子网掩码
   int nDhcpAction          // 对DHCP的操作 0:不修改, 1:启用 DHCP，2:禁用 DHCP
);

BOOL NotifyIPChange( LPCTSTR lpszAdapterName, int nIndex, LPCTSTR pIPAddress, LPCTSTR pNetMask )
{
BOOL bResult = FALSE;
HINSTANCE hDhcpDll;
DHCPNOTIFYPROC pDhcpNotifyProc;
WCHAR wcAdapterName[256];

MultiByteToWideChar( CP_ACP, 0, lpszAdapterName, -1, wcAdapterName,256 );

if( ( hDhcpDll = ::LoadLibrary("dhcpcsvc.dll") ) == NULL )
   return FALSE;

if( ( pDhcpNotifyProc = (DHCPNOTIFYPROC)::GetProcAddress( hDhcpDll, "DhcpNotifyConfigChange" ) ) != NULL )
   if(  (pDhcpNotifyProc)(NULL, wcAdapterName, TRUE, nIndex, inet_addr(pIPAddress), inet_addr(pNetMask), 0 ) == ERROR_SUCCESS )
      bResult = TRUE;

::FreeLibrary(hDhcpDll);
return bResult;
}