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sniffer技术原理及应用(1)
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编辑：华夏媒体 作者：未知 来源：网络 时间：2006-07-29 总浏览量：1538 |
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}
/* Init packet structure */
memset(&ArpPacket, 0, sizeof(TArpPacket));
/* Build ARP Request packet */
BuildARPPacket(&ArpPacket, magicpack, wParams.srcMAC, ARP_OP_REQUEST,
wParams.srcMAC, wParams.srcIPAdd, mactarget, iptarget,wParams.ar_hw);
/* Init ARP Request packet */
PacketInitPacket(lpPacketRequest, &ArpPacket, sizeof(ArpPacket));
/* Set number of ARP Request packets to send */
if(PacketSetNumWrites(lpAdapter, 1) == FALSE)
{
msgStatus = "Warning : unable to send more than one packet in a single write..";
SHOWSTAT(msgStatus);
}
/* Set hardware filter to directed mode */
if(PacketSetHwFilter(lpAdapter, NDIS_PACKET_TYPE_DIRECTED) == FALSE)
{
msgStatus ="Warning: unable to set directed mode..";
SHOWSTAT(msgStatus);
}
/* Set a 512K buffer in the driver */
if(PacketSetBuff(lpAdapter, 512000) == FALSE)
{
msgStatus = "Error: unable to set the kernel buffer..";
SHOWSTAT(msgStatus);
PacketFreePacket(lpPacketRequest);
return(EXIT_FAILURE);
}
/* Set a 1 second read timeout */
if(PacketSetReadTimeout(lpAdapter, -1) == FALSE)
{
msgStatus = "Warning: unable to set the read tiemout..";
SHOWSTAT(msgStatus);
}
/* Allocate PACKET structure for ARP Reply packet */
if((lpPacketReply = PacketAllocatePacket()) == NULL)
{
msgStatus = "Error: failed to allocate the LPPACKET structure..";
SHOWSTAT(msgStatus);
PacketFreePacket(lpPacketRequest);
return(EXIT_FAILURE);
}
/* Init ARP Reply packet */
PacketInitPacket(lpPacketReply, (char*)buffer, 256000);
/* Allocate memory for remote MAC address */
timestamp = GetTickCount();
/* Main capture loop */
for(;;)
{
if(numPacks < wParams.numPacks)
{
/* Send packet */
if(PacketSendPacket(lpAdapter, lpPacketRequest, TRUE) == FALSE)
{
msgStatus ="Error : unable to send the packets..";
SHOWSTAT(msgStatus);
PacketFreePacket(lpPacketRequest);
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