int _recvPacket(void *pData) {
struct bpf_hdr *hdr;
u8 *data;
int ret=0;
int size;
while (lbytes > 0) {
hdr = (struct bpf_hdr *)buf;
// DEV9_LOG("hdr %d,%d,%d\n", hdr->bh_hdrlen, hdr->bh_caplen, hdr->bh_datalen);
// DEV9_LOG("lbytes %d\n", lbytes);
data = buf+hdr->bh_hdrlen;
size = Packet_WORDALIGN(hdr->bh_hdrlen+hdr->bh_datalen);
buf+= size; lbytes-= size;
if (_filterPacket(data)) {
struct bpf_stat stat;
ret = hdr->bh_datalen;
memcpy(pData, data, ret);
if(PacketGetStats(lpAdapter,&stat)==FALSE){
printf("Warning: unable to get stats from the kernel!\n");
}
// printf("_recvPacket %d (tbytes=%d, packets=%d, lost=%d, time=%d)\n", ret, tbytes, stat.bs_recv,stat.bs_drop, timeGetTime());
// printf("%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n", data[5], data[4], data[3], data[2], data[1], data[0]);
break;
}
}
return ret;
}
static int
pcap_stats_win32(pcap_t *p, struct pcap_stat *ps)
{
if(PacketGetStats(p->adapter, (struct bpf_stat*)ps) != TRUE){
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "PacketGetStats error: %s", pcap_win32strerror());
return -1;
}
return 0;
}
int
pcap_stats(pcap_t *p, struct pcap_stat *ps)
{
#ifdef REMOTE
if (p->rmt_clientside)
{
/* We are on an remote capture */
return pcap_stats_remote(p, ps);
}
#endif
if(PacketGetStats(p->adapter, (struct bpf_stat*)ps) != TRUE){
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "PacketGetStats error: %s", pcap_win32strerror());
return -1;
}
return 0;
}
/**
* Check for newly received packets. Called in the main loop: 'interrupt' mode is not
* really supported :(
*
* @param adapter adapter handle received by a call to init_adapter
*/
void
update_adapter(void *adapter)
{
struct packet_adapter *pa = (struct packet_adapter*)adapter;
struct bpf_stat stat;
/* print the capture statistics */
if(PacketGetStats(pa->lpAdapter, &stat) == FALSE) {
printf("Warning: unable to get stats from the kernel!\n");
} else {
if (pa->bs_drop != stat.bs_drop) {
printf("%d packets received.\n%d Packets dropped.\n", stat.bs_recv, stat.bs_drop);
pa->bs_drop = stat.bs_drop;
}
}
if ((pa != NULL) && (PacketReceivePacket(pa->lpAdapter, pa->lpPacket, TRUE))) {
ProcessPackets(adapter, pa->lpPacket);
}
}
static int
pcap_stats_win32(pcap_t *p, struct pcap_stat *ps)
{
struct pcap_win *pw = p->priv;
struct bpf_stat bstats;
char errbuf[PCAP_ERRBUF_SIZE+1];
/*
* Try to get statistics.
*
* (Please note - "struct pcap_stat" is *not* the same as
* WinPcap's "struct bpf_stat". It might currently have the
* same layout, but let's not cheat.
*
* Note also that we don't fill in ps_capt, as we might have
* been called by code compiled against an earlier version of
* WinPcap that didn't have ps_capt, in which case filling it
* in would stomp on whatever comes after the structure passed
* to us.
*/
if (!PacketGetStats(pw->adapter, &bstats)) {
pcap_win32_err_to_str(GetLastError(), errbuf);
pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
"PacketGetStats error: %s", errbuf);
return (-1);
}
ps->ps_recv = bstats.bs_recv;
ps->ps_drop = bstats.bs_drop;
/*
* XXX - PacketGetStats() doesn't fill this in, so we just
* return 0.
*/
#if 0
ps->ps_ifdrop = bstats.ps_ifdrop;
#else
ps->ps_ifdrop = 0;
#endif
return (0);
}
int main()
{
//define a pointer to an ADAPTER structure
LPADAPTER lpAdapter = 0;
//define a pointer to a PACKET structure
LPPACKET lpPacket;
int i;
DWORD dwErrorCode;
//ascii strings
char AdapterName[8192]; // string that contains a list of the network adapters
char *temp,*temp1;
int AdapterNum=0,Open;
ULONG AdapterLength;
char buffer[256000]; // buffer to hold the data coming from the driver
struct bpf_stat stat;
//
// Obtain the name of the adapters installed on this machine
//
printf("Packet.dll test application. Library version:%s\n", PacketGetVersion());
printf("Adapters installed:\n");
i=0;
AdapterLength = sizeof(AdapterName);
if(PacketGetAdapterNames(AdapterName,&AdapterLength)==FALSE){
printf("Unable to retrieve the list of the adapters!\n");
return -1;
}
temp=AdapterName;
temp1=AdapterName;
while ((*temp!='\0')||(*(temp-1)!='\0'))
{
if (*temp=='\0')
{
memcpy(AdapterList[i],temp1,temp-temp1);
temp1=temp+1;
i++;
}
temp++;
}
AdapterNum=i;
for (i=0;i<AdapterNum;i++)
printf("\n%d- %s\n",i+1,AdapterList[i]);
printf("\n");
do
{
printf("Select the number of the adapter to open : ");
scanf("%d",&Open);
if (Open>AdapterNum) printf("\nThe number must be smaller than %d",AdapterNum);
} while (Open>AdapterNum);
lpAdapter = PacketOpenAdapter(AdapterList[Open-1]);
if (!lpAdapter || (lpAdapter->hFile == INVALID_HANDLE_VALUE))
{
dwErrorCode=GetLastError();
printf("Unable to open the adapter, Error Code : %lx\n",dwErrorCode);
return -1;
}
// set the network adapter in promiscuous mode
if(PacketSetHwFilter(lpAdapter,NDIS_PACKET_TYPE_PROMISCUOUS)==FALSE){
printf("Warning: unable to set promiscuous mode!\n");
}
// set a 512K buffer in the driver
if(PacketSetBuff(lpAdapter,512000)==FALSE){
printf("Unable to set the kernel buffer!\n");
return -1;
}
// set a 1 second read timeout
if(PacketSetReadTimeout(lpAdapter,1000)==FALSE){
printf("Warning: unable to set the read tiemout!\n");
}
//allocate and initialize a packet structure that will be used to
//receive the packets.
if((lpPacket = PacketAllocatePacket())==NULL){
printf("\nError: failed to allocate the LPPACKET structure.");
return (-1);
}
PacketInitPacket(lpPacket,(char*)buffer,256000);
//main capture loop
while(!kbhit())
{
// capture the packets
if(PacketReceivePacket(lpAdapter,lpPacket,TRUE)==FALSE){
printf("Error: PacketReceivePacket failed");
return (-1);
}
PrintPackets(lpPacket);
}
//print the capture statistics
if(PacketGetStats(lpAdapter,&stat)==FALSE){
printf("Warning: unable to get stats from the kernel!\n");
}
else
printf("\n\n%d packets received.\n%d Packets lost",stat.bs_recv,stat.bs_drop);
PacketFreePacket(lpPacket);
// close the adapter and exit
PacketCloseAdapter(lpAdapter);
return (0);
}
