20CN网络安全小组论坛 - 编程破解 - 关于vb的api一个小问题，请大家多多帮忙~~~

论坛: 编程破解标题: 关于vb的api一个小问题，请大家多多帮忙~~~

复制本贴地址

作者: itianshi [itianshi]

论坛用户

我要问的是api里那句是"返回本机ip的"，因为我这资料少，所以只好找大家帮助了，声明参数的用法，谢了。。。

地主发表时间: 02/16 14:24

回复: sugus2002 [sugus2002]

论坛用户

我只会用WINSOCK来返回本机的IP地址

B1层发表时间: 02/17 23:10

回复: haounix [haounix]

论坛用户

很多菜鸟不会啊,请竹多写点啊!!!

B2层发表时间: 04-07-11 11:21

回复: Frankiez [frankiez84]

论坛用户

给你点代码，不过不是VB的，自己看着改吧

hostent *p;
char s[128];
char *p2;

//Get the computer name
gethostname(s, 128);
p = gethostbyname(s);
//Memo1->Lines->Add(p->h_name);

//Get the IpAddress
p2 = inet_ntoa(*((in_addr *)p->h_addr));
Memo1->Lines->Add(p2);
---------------------------------------------------------------

//Win32API:
// WSAStartup
// WSACleanup
// gethostname
// gethostbyname

#include <windows.h>
#include <iostream.h>

void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;

wVersionRequested = MAKEWORD(2, 2);

err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
MessageBox(NULL, "Wrong WinSock Version.", "Error", MB_OK);
return;
}

const int iChkIpTimes = 26;
int localIPnums = 0;
char hostName[80];
LPHOSTENT lpHostEnt;
struct in_addr addr[iChkIpTimes];

for ( int i=0; i<iChkIpTimes; i++)
{
memset(&addr[i], 0, sizeof(in_addr));
}

if ( gethostname(hostName, sizeof(hostName)) == SOCKET_ERROR )
{
MessageBox(NULL, "Can't getting local host name.", "Error", MB_OK);
WSACleanup();
return;
}
cout << "Local host name:" << hostName << endl;
lpHostEnt = gethostbyname( hostName );
if ( !lpHostEnt )
{
MessageBox(NULL, "Bad host lookup!", "Error", MB_OK);
WSACleanup();
return;
}
for ( int i=0; i<iChkIpTimes; i++)
{
if ( lpHostEnt->h_addr_list[i] == 0 )
{
localIPnums = i;
break;
}
memcpy(&addr[i], lpHostEnt->h_addr_list[i], sizeof(in_addr));
}

for ( int i=0; i<localIPnums; i++)
{
cout << "Local IP Address " << i << " : " << inet_ntoa(addr[i]) << endl;
}

if ( LOBYTE( wsaData.wVersion ) != 2 ¦ ¦ HIBYTE( wsaData.wVersion ) != 2 )
{
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
WSACleanup();
return;
}
}
---------------------------------------------------------------

AnsiString __fastcall TComputerIPAddress::GetIPAddress()
{
struct hostent *thisHost;
struct in_addr in;
char MyName[80];
char *Ip,*ptr;

WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 2, 0 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
/* Tell the user that we couldn't find a usable */
/* WinSock DLL. */
return NULL;
}
/* Confirm that the WinSock DLL supports 2.0.*/
/* Note that if the DLL supports versions greater */
/* than 2.0 in addition to 2.0, it will still return */
/* 2.0 in wVersion since that is the version we */

/* requested. */

if ( LOBYTE( wsaData.wVersion ) != 2 ¦ ¦
HIBYTE( wsaData.wVersion ) != 0 )
{
/* Tell the user that we couldn't find a usable */
/* WinSock DLL. */
WSACleanup( );
return NULL;
}

if(gethostname(MyName,80)==SOCKET_ERROR)
return NULL;

if(!(thisHost=gethostbyname(MyName)))
return NULL;
memset((void *)&in,sizeof(in),0);
in.s_addr=*((unsigned long *)thisHost->h_addr_list[0]);
if(!(ptr=inet_ntoa(in)))
return NULL;
WSACleanup( );
Ip=new char[strlen(ptr)+1];
strcpy(Ip,ptr);
return Ip;
}
---------------------------------------------------------------

B3层发表时间: 04-07-12 08:21

论坛: 编程破解