116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
|
/*++
|
||
|
|
|
||
|
|
Copyright (c) 2000, Microsoft Corporation
|
||
|
|
|
||
|
|
Module Name:
|
||
|
|
|
||
|
|
sendarp.c
|
||
|
|
|
||
|
|
Abstract:
|
||
|
|
|
||
|
|
The module implements a utility program to resolve an IP address to
|
||
|
|
a hardware address using the SendARP() API routine.
|
||
|
|
|
||
|
|
Author:
|
||
|
|
|
||
|
|
Abolade Gbadegesin (aboladeg) 6-October-1999
|
||
|
|
|
||
|
|
Revision History:
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
#include <windows.h>
|
||
|
|
#include <winsock.h>
|
||
|
|
#include <iphlpapi.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
MIB_IPNETROW IpNetRow;
|
||
|
|
|
||
|
|
int __cdecl
|
||
|
|
main(
|
||
|
|
int argc,
|
||
|
|
char* argv[]
|
||
|
|
)
|
||
|
|
{
|
||
|
|
ULONG Error;
|
||
|
|
UCHAR HardwareAddress[6];
|
||
|
|
ULONG HardwareAddressLength;
|
||
|
|
ULONG InterfaceIndex;
|
||
|
|
ULONG Length;
|
||
|
|
SOCKADDR_IN SockAddrIn;
|
||
|
|
SOCKET Socket;
|
||
|
|
ULONG SourceAddress;
|
||
|
|
ULONG TargetAddress;
|
||
|
|
HANDLE ThreadHandle;
|
||
|
|
WSADATA wd;
|
||
|
|
|
||
|
|
if (argc != 2) {
|
||
|
|
printf("Usage: %s <IP address>\n", argv[0]);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
WSAStartup(0x202, &wd);
|
||
|
|
TargetAddress = inet_addr(argv[1]);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Retrieve the best interface for the target IP address,
|
||
|
|
// and also perform a UDP-connect to determine the 'closest'
|
||
|
|
// local IP address to the target IP address.
|
||
|
|
//
|
||
|
|
|
||
|
|
Error = GetBestInterface(TargetAddress, &InterfaceIndex);
|
||
|
|
if (Error != NO_ERROR) {
|
||
|
|
printf("GetBestInterfaceFromStack: %d\n", Error);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
Length = sizeof(SockAddrIn);
|
||
|
|
SockAddrIn.sin_family = AF_INET;
|
||
|
|
SockAddrIn.sin_port = 0;
|
||
|
|
SockAddrIn.sin_addr.s_addr = TargetAddress;
|
||
|
|
if ((Socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))
|
||
|
|
== INVALID_SOCKET ||
|
||
|
|
connect(Socket, (PSOCKADDR)&SockAddrIn, sizeof(SockAddrIn))
|
||
|
|
== SOCKET_ERROR ||
|
||
|
|
getsockname(Socket, (PSOCKADDR)&SockAddrIn, &Length)
|
||
|
|
== SOCKET_ERROR) {
|
||
|
|
printf("socket/connect/getsockname: %d\n", WSAGetLastError());
|
||
|
|
}
|
||
|
|
SourceAddress = SockAddrIn.sin_addr.s_addr;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Make sure the target IP address isn't already cached,
|
||
|
|
// by removing it from the ARP cache if present using the interface index
|
||
|
|
// determined above.
|
||
|
|
//
|
||
|
|
|
||
|
|
ZeroMemory(&IpNetRow, sizeof(IpNetRow));
|
||
|
|
IpNetRow.dwIndex = InterfaceIndex;
|
||
|
|
IpNetRow.dwPhysAddrLen = 6;
|
||
|
|
IpNetRow.dwAddr = TargetAddress;
|
||
|
|
IpNetRow.dwType = MIB_IPNET_TYPE_INVALID;
|
||
|
|
|
||
|
|
DeleteIpNetEntry(&IpNetRow);
|
||
|
|
|
||
|
|
HardwareAddressLength = sizeof(HardwareAddress);
|
||
|
|
Error =
|
||
|
|
SendARP(
|
||
|
|
TargetAddress,
|
||
|
|
SourceAddress,
|
||
|
|
(PULONG)HardwareAddress,
|
||
|
|
&HardwareAddressLength
|
||
|
|
);
|
||
|
|
if (Error) {
|
||
|
|
printf("SendARP: %d\n", Error);
|
||
|
|
} else {
|
||
|
|
ULONG i;
|
||
|
|
printf("%s\t", argv[1]);
|
||
|
|
for (i = 0; i < HardwareAddressLength-1; i++) {
|
||
|
|
printf("%02x-", HardwareAddress[i]);
|
||
|
|
}
|
||
|
|
printf("%02x\n", HardwareAddress[i]);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|