long sockOpen(char *Device) {
lpAdapter = PacketOpenAdapter(Device);
if (lpAdapter == NULL) return -1;
#ifdef DEV9_LOG
DEV9_LOG("PacketOpenAdapter %s: %p\n", Device, lpAdapter);
#endif
if(PacketSetHwFilter(lpAdapter,NDIS_PACKET_TYPE_PROMISCUOUS)==FALSE){
SysMessage("Warning: unable to set promiscuous mode!");
}
if(PacketSetBuff(lpAdapter,512000)==FALSE){
SysMessage("Unable to set the kernel buffer!");
return -1;
}
if(PacketSetReadTimeout(lpAdapter,100)==FALSE){
SysMessage("Warning: unable to set the read tiemout!");
}
if((lpRecvPacket = PacketAllocatePacket())==NULL){
SysMessage("Error: failed to allocate the LPPACKET structure.");
return (-1);
}
if((lpSendPacket = PacketAllocatePacket())==NULL){
SysMessage("Error: failed to allocate the LPPACKET structure.");
return (-1);
}
lbytes=0;
tbytes=0;
return 0;
}
static LPPACKET get_write_packet( UINT len )
{
LPPACKET Packet = 0;
EnterCriticalSection( &wpool_csection );
if(write_packet_pool) {
Packet = write_packet_pool;
write_packet_pool = write_packet_pool->next;
Packet->OverLapped.Offset = 0;
Packet->OverLapped.OffsetHigh = 0;
Packet->Length = len;
Packet->BytesReceived = 0;
Packet->bIoComplete = FALSE;
Packet->free = TRUE;
Packet->next = 0;
// actually an auto-reset event.
if(Packet->OverLapped.hEvent) ResetEvent(Packet->OverLapped.hEvent);
} else {
Packet = PacketAllocatePacket(fd,len);
}
D(bug("Pool size after get wr packet = %ld\n",get_write_packet_pool_sz()));
LeaveCriticalSection( &wpool_csection );
return Packet;
}
//初始化网卡：打开网卡和初始化包结构
int NetworkInterface::InitAdapterCommon(char *adapterName)
{
//打开网络网卡
adapter.lpAdapter = PacketOpenAdapter(adapterName);
if (!adapter.lpAdapter || (adapter.lpAdapter->hFile == INVALID_HANDLE_VALUE))
{
LastErrCode = GetLastError();
strcpy_s(LastErrStr, "Unable to open the adapter!");
return -1;
}
//分配并初始化一个包结构，将用于接收数据包
if ((adapter.lpPacket = PacketAllocatePacket()) == NULL)
{
LastErrCode = GetLastError();
strcpy_s(LastErrStr, "Error: failed to allocate the LPPACKET structure.");
return (-1);
}
//此处分配的动态内存在 PacketClose()中释放
char *buffer = new char[256000]; //256KB
PacketInitPacket(adapter.lpPacket,(char*)buffer,256000);
//在驱动中设置512K的缓冲区
if (PacketSetBuff(adapter.lpAdapter, 512000) == FALSE)
{
LastErrCode = GetLastError();
strcpy_s(LastErrStr, "Unable to set the kernel buffer!");
return -1;
}
AdapterStat = 1;
return 0;
}
LPPACKET PacketQueryOid(
LPADAPTER lpAdapter,
ULONG ulOid,
ULONG ulLength
)
{
ULONG ioctl;
LPPACKET lpPacket;
#define pOidData ((PPACKET_OID_DATA)(lpPacket->Buffer))
lpPacket = PacketAllocatePacket( lpAdapter, sizeof(PACKET_OID_DATA)-1+ulLength );
if( lpPacket ) {
ioctl = IOCTL_PROTOCOL_QUERY_OID;
pOidData->Oid = ulOid;
pOidData->Length = ulLength;
if (PacketRequest( lpAdapter, lpPacket, FALSE )) {
return lpPacket;
}
PacketFreePacket( lpPacket );
}
#undef pOidData
return 0;
}
eth_t *
eth_open(const char *device)
{
eth_t *eth;
char pcapdev[128];
HANDLE pcapMutex;
DWORD wait;
if (eth_get_pcap_devname(device, pcapdev, sizeof(pcapdev)) != 0)
return (NULL);
if ((eth = calloc(1, sizeof(*eth))) == NULL)
return (NULL);
pcapMutex = CreateMutex(NULL, 0, "Global\\DnetPcapHangAvoidanceMutex");
wait = WaitForSingleObject(pcapMutex, INFINITE);
eth->lpa = PacketOpenAdapter(pcapdev);
if (wait == WAIT_ABANDONED || wait == WAIT_OBJECT_0) {
ReleaseMutex(pcapMutex);
}
CloseHandle(pcapMutex);
if (eth->lpa == NULL) {
eth_close(eth);
return (NULL);
}
PacketSetBuff(eth->lpa, 512000);
eth->pkt = PacketAllocatePacket();
if (eth->pkt == NULL) {
eth_close(eth);
return NULL;
}
return (eth);
}
BOOLEAN PacketDelMulticast( LPADAPTER AdapterObject, LPBYTE address )
{
BOOLEAN Status = FALSE;
LPBYTE p;
int i, count;
LPPACKET lpPacket, lpPacket2;
D(bug("PacketDelMulticast\n"));
if(packet_filter & (NDIS_PACKET_TYPE_ALL_MULTICAST|NDIS_PACKET_TYPE_PROMISCUOUS)) {
D(bug("PacketDelMulticast: already listening for all multicast\n"));
return TRUE;
}
lpPacket = PacketQueryOid( AdapterObject, OID_802_3_MULTICAST_LIST, MAX_MULTICAST_SZ );
#define OidData ((PPACKET_OID_DATA)(lpPacket->Buffer))
if(lpPacket) {
count = OidData->Length / ETH_802_3_ADDRESS_LENGTH;
D(bug("PacketDelMulticast: %d old addresses\n",count));
Status = FALSE;
p = (LPBYTE)OidData->Data;
for( i=0; i<count; i++ ) {
int tail_len;
if(memcmp(p,address,ETH_802_3_ADDRESS_LENGTH) == 0) {
D(bug("PacketDelMulticast: address found, deleting\n"));
ULONG IoCtlBufferLength = (sizeof(PACKET_OID_DATA)+ETH_802_3_ADDRESS_LENGTH*(count-1)-1);
lpPacket2 = PacketAllocatePacket( AdapterObject, IoCtlBufferLength );
#define OidData2 ((PPACKET_OID_DATA)(lpPacket2->Buffer))
if ( lpPacket2 ) {
OidData2->Oid = OID_802_3_MULTICAST_LIST;
OidData2->Length = ETH_802_3_ADDRESS_LENGTH*(count-1);
tail_len = ETH_802_3_ADDRESS_LENGTH * (count-i-1);
if(tail_len) memmove( p, p+ETH_802_3_ADDRESS_LENGTH, tail_len );
if(OidData2->Length) memcpy( OidData2->Data, OidData->Data, OidData2->Length );
if(count == 1) memset( OidData2->Data, 0, ETH_802_3_ADDRESS_LENGTH ); // eh...
Status = PacketRequest( AdapterObject, lpPacket2, TRUE );
PacketFreePacket( lpPacket2 );
D(bug("PacketDelMulticast: PacketRequest returned status 0x%X, last error = 0x%X\n",Status,GetLastError()));
}
break;
#undef OidData2
}
p += ETH_802_3_ADDRESS_LENGTH;
}
if( i == count ) {
D(bug("PacketDelMulticast: cannot delete, was not defined\n"));
}
PacketFreePacket( lpPacket );
#undef OidData
}
// return Status;
return TRUE;
}
eth_t *
eth_open(const char *device)
{
eth_t *eth;
intf_t *intf;
struct intf_entry ifent;
eth_addr_t ea;
char *p, *buf;
ULONG len;
/* Get interface entry. */
memset(&ifent, 0, sizeof(ifent));
if ((intf = intf_open()) != NULL) {
strlcpy(ifent.intf_name, device, sizeof(ifent.intf_name));
intf_get(intf, &ifent);
intf_close(intf);
}
if (ifent.intf_link_addr.addr_type != ADDR_TYPE_ETH)
return (NULL);
/* Get Packet driver adapter name/desc lists. */
buf = NULL;
PacketGetAdapterNames(buf, &len);
if (len > 0 && (buf = malloc(len)) != NULL) {
if (!PacketGetAdapterNames(buf, &len)) {
free(buf);
buf = NULL;
}
}
if (buf == NULL)
return (NULL);
/* XXX - find adapter with matching interface MAC address. */
if ((eth = calloc(1, sizeof(*eth))) == NULL) {
free(buf);
return (NULL);
}
for (p = buf; *p != '\0'; p += strlen(p) + 1) {
if ((eth->lpa = PacketOpenAdapter(p)) != NULL) {
if (eth->lpa->hFile != INVALID_HANDLE_VALUE &&
eth_get(eth, &ea) == 0 &&
memcmp(&ea, &ifent.intf_link_addr.addr_eth,
ETH_ADDR_LEN) == 0) {
PacketSetBuff(eth->lpa, 512000);
eth->pkt = PacketAllocatePacket();
break;
}
PacketCloseAdapter(eth->lpa);
}
}
free(buf);
if (eth->pkt == NULL)
eth = eth_close(eth);
return (eth);
}
INT PacketSendPackets(LPADAPTER AdapterObject,
PVOID PacketBuff,
ULONG Size,
BOOLEAN Sync)
{
struct dump_bpf_hdr *winpcap_hdr;
PCHAR EndOfUserBuff = (PCHAR)PacketBuff + Size;
LPPACKET PacketToSend;
BOOLEAN res;
// Start from the first packet
winpcap_hdr = (struct dump_bpf_hdr*)PacketBuff;
if( (PCHAR)winpcap_hdr + winpcap_hdr->caplen + sizeof(struct dump_bpf_hdr) > EndOfUserBuff )
{
// Malformed buffer
return 0;
}
while( TRUE ){
if(winpcap_hdr->caplen ==0 || winpcap_hdr->caplen > 65536)
{
// Malformed header
return 0;
}
// Set up the LPPACKET structure
PacketToSend=PacketAllocatePacket();
PacketInitPacket(PacketToSend,
(PCHAR)winpcap_hdr + sizeof(struct dump_bpf_hdr),
winpcap_hdr->caplen);
// Send the packet
res = PacketSendPacket (AdapterObject, PacketToSend, TRUE);
// Free the just used LPPACKET structure
PacketFreePacket(PacketToSend);
if(res == FALSE){
// Error sending the packet
return (PCHAR)winpcap_hdr - (PCHAR)PacketBuff;
}
// Step to the next packet in the buffer
(PCHAR)winpcap_hdr += winpcap_hdr->caplen + sizeof(struct dump_bpf_hdr);
// Check if the end of the user buffer has been reached
if( (PCHAR)winpcap_hdr >= EndOfUserBuff )
{
return (PCHAR)winpcap_hdr - (PCHAR)PacketBuff;
}
}
}
static bool allocate_read_packets(void)
{
for( int i=0; i<PACKET_POOL_COUNT; i++ ) {
packets[i] = PacketAllocatePacket(fd,1514);
if(!packets[i]) {
D(bug("allocate_read_packets: out of memory\n"));
return(false);
}
}
return(true);
}
/**
* Send a packet
*
* @param adapter adapter handle received by a call to init_adapter
* @param buffer complete packet to send (including ETH header; without CRC)
* @param len length of the packet (including ETH header; without CRC)
*/
int
packet_send(void *adapter, void *buffer, int len)
{
struct packet_adapter *pa = (struct packet_adapter*)adapter;
LPPACKET lpPacket;
if (pa == NULL) {
return -1;
}
if ((lpPacket = PacketAllocatePacket()) == NULL) {
return -1;
}
PacketInitPacket(lpPacket, buffer, len);
if (!PacketSendPacket(pa->lpAdapter, lpPacket, TRUE)) {
return -1;
}
PacketFreePacket(lpPacket);
return 0;
}
/* Send a packet to the network */
int
pcap_sendpacket(pcap_t *p, u_char *buf, int size){
LPPACKET PacketToSend;
if (p->adapter==NULL)
{
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Writing a packet is allowed only on a physical adapter");
return -1;
}
PacketToSend=PacketAllocatePacket();
PacketInitPacket(PacketToSend,buf,size);
if(PacketSendPacket(p->adapter,PacketToSend,TRUE) == FALSE){
PacketFreePacket(PacketToSend);
return -1;
}
PacketFreePacket(PacketToSend);
return 0;
}
BOOLEAN PacketSetFilter( LPADAPTER AdapterObject, ULONG Filter )
{
BOOLEAN Status;
ULONG IoCtlBufferLength = (sizeof(PACKET_OID_DATA)+sizeof(ULONG)-1);
LPPACKET lpPacket;
lpPacket = PacketAllocatePacket( AdapterObject, IoCtlBufferLength );
#define lpOidData ((PPACKET_OID_DATA)(lpPacket->Buffer))
if ( lpPacket ) {
lpOidData->Oid = OID_GEN_CURRENT_PACKET_FILTER;
lpOidData->Length = sizeof(ULONG);
*((PULONG)lpOidData->Data) = Filter;
Status = PacketRequest( AdapterObject, lpPacket, TRUE );
PacketFreePacket( lpPacket );
} else {
Status = FALSE;
}
#undef lpOidData
return Status;
}
eth_t *
eth_open(const char *device)
{
eth_t *eth;
char pname[128];
if (intf_get_pcap_devname(device, pname, sizeof(pname)) != 0)
return NULL;
if ((eth = calloc(1, sizeof(*eth))) == NULL)
return (NULL);
if ((eth->lpa = PacketOpenAdapter(pname)) == NULL ||
eth->lpa->hFile == INVALID_HANDLE_VALUE)
return (eth_close(eth));
PacketSetBuff(eth->lpa, 512000);
if ((eth->pkt = PacketAllocatePacket()) == NULL)
return (eth_close(eth));
return (eth);
}
bool SniffPacketThread::OpenAdapter(char *theAdapterName)
{
m_lpa = PacketOpenAdapter(theAdapterName);
if(m_lpa == NULL)
{
TRACE0("PacketOpenAdapter failed");
return(FALSE);
}
// Allocate packet mem
m_lpp = PacketAllocatePacket();
if( m_lpp == NULL)
{
TRACE0("PacketAllocatePacket failed");
PacketCloseAdapter(m_lpa);
return(FALSE);
}
PacketInitPacket(m_lpp, m_pbuf, 512000);
// Set Kernel Buffer Size
if( PacketSetBuff(m_lpa, 512000) == FALSE
||
PacketSetReadTimeout(m_lpa, 1000) == FALSE)
{
PacketCloseAdapter(m_lpa);
PacketFreePacket(m_lpp);
m_enabled = FALSE;
m_handle = NULL;
return(FALSE);
}
PacketSetHwFilter(m_lpa, NDIS_PACKET_TYPE_PROMISCUOUS);
return(TRUE);
}
//发包
int NetworkInterface::SendPacket(u_char *buffer, int packetLen, int repeatNum)
{
LPPACKET lpPacket;
memcpy((buffer + 6), srcMAC, 6);
//分配并初始化一个包结构，将用于发送数据包
if ( (lpPacket = PacketAllocatePacket()) == NULL )
{
LastErrCode = GetLastError();
strcpy_s(LastErrStr, "Error: failed to allocate the LPPACKET structure.");
return (-1);
}
PacketInitPacket(lpPacket, buffer, packetLen);
if (PacketSetNumWrites(adapter.lpAdapter, repeatNum) == FALSE)
{
LastErrCode = GetLastError();
strcpy_s(LastErrStr, "Unable to send more than one packet in a single write!");
PacketFreePacket(lpPacket);
return -1;
}
if(PacketSendPacket(adapter.lpAdapter, lpPacket, TRUE) == FALSE)
{
LastErrCode = GetLastError();
strcpy_s(LastErrStr, "Error sending the packets!");
PacketFreePacket(lpPacket);
return -1;
}
PacketFreePacket(lpPacket);
//将发送的数据包转存到文件中
//PrintPacket(buffer, packetLen, 1);
return 0;
}
LPADAPTER PacketOpenAdapter (LPTSTR AdapterName)
{
LPPACKET lpSupport;
LPADAPTER nAdapter;
DWORD error;
BOOL res;
OPENVXDHANDLE OpenVxDHandle;
DWORD KernEvent;
UINT BytesReturned;
struct _timeb time;
ODSEx ("Packet32: PacketOpenAdapter, opening %s\n", AdapterName);
nAdapter = (LPADAPTER) GlobalAllocPtr (GMEM_MOVEABLE | GMEM_ZEROINIT,sizeof (ADAPTER));
if (nAdapter == NULL)
{
error=GetLastError();
ODS ("Packet32: PacketOpenAdapter GlobalAlloc Failed\n");
ODSEx("Error=%d\n",error);
//set the error to the one on which we failed
SetLastError(error);
return NULL;
}
wsprintf (nAdapter->SymbolicLink,
TEXT ("\\\\.\\%s"),
TEXT ("NPF.VXD"));
nAdapter->hFile = CreateFile (nAdapter->SymbolicLink,
GENERIC_WRITE | GENERIC_READ,
0,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED | FILE_FLAG_DELETE_ON_CLOSE,
0);
if (nAdapter->hFile == INVALID_HANDLE_VALUE)
{
error=GetLastError();
ODS ("Packet32: PacketOpenAdapter Could not open adapter, 1\n");
ODSEx("Error=%d\n",error);
GlobalFreePtr (nAdapter);
//set the error to the one on which we failed
SetLastError(error);
return NULL;
}
lpSupport=PacketAllocatePacket();
PacketInitPacket(lpSupport,AdapterName,strlen(AdapterName));
if (nAdapter && (nAdapter->hFile != INVALID_HANDLE_VALUE))
{
res=PacketDeviceIoControl(nAdapter,
lpSupport,
(ULONG) IOCTL_OPEN,
TRUE);
if (res==FALSE || ((char*)lpSupport->Buffer)[0]=='\0'){
SetLastError(ERROR_FILE_NOT_FOUND);
goto err;
}
PacketFreePacket(lpSupport);
// Set the time zone
_ftime(&time);
if(DeviceIoControl(nAdapter->hFile,pBIOCSTIMEZONE,&time.timezone,2,NULL,0,&BytesReturned,NULL)==FALSE){
error=GetLastError();
ODS ("Packet32: PacketOpenAdapter Could not open adapter, 2\n");
ODSEx("Error=%d\n",error);
GlobalFreePtr (nAdapter);
//set the error to the one on which we failed
SetLastError(error);
return NULL;
}
// create the read event
nAdapter->ReadEvent=CreateEvent(NULL, TRUE, FALSE, NULL);
// obtain the pointer of OpenVxDHandle in KERNEL32.DLL.
// It is not possible to reference statically this function, because it is present only in Win9x
OpenVxDHandle = (OPENVXDHANDLE) GetProcAddress(GetModuleHandle("KERNEL32"),"OpenVxDHandle");
// map the event to kernel mode
KernEvent=(DWORD)(OpenVxDHandle)(nAdapter->ReadEvent);
// pass the event to the driver
if(DeviceIoControl(nAdapter->hFile,pBIOCEVNAME,&KernEvent,4,NULL,0,&BytesReturned,NULL)==FALSE){
error=GetLastError();
ODS("Packet32: PacketOpenAdapter Could not open adapter, 3\n");
ODSEx("Error=%d\n",error);
GlobalFreePtr (nAdapter);
//set the error to the one on which we failed
SetLastError(error);
return NULL;
}
//set the maximum lookhahead size allowable with this NIC driver
PacketSetMaxLookaheadsize(nAdapter);
//set the number of times a single write will be repeated
PacketSetNumWrites(nAdapter,1);
return nAdapter;
}
err:
error=GetLastError();
ODS ("Packet32: PacketOpenAdapter Could not open adapter, 4\n");
ODSEx("Error=%d\n",error);
//set the error to the one on which we failed
SetLastError(error);
return NULL;
}
BOOLEAN PacketAddMulticast( LPADAPTER AdapterObject, LPBYTE address )
{
BOOLEAN Status = FALSE;
LPBYTE p;
int i, count;
LPPACKET lpPacket;
D(bug("PacketAddMulticast\n"));
/*
if(packet_filter & (NDIS_PACKET_TYPE_ALL_MULTICAST|NDIS_PACKET_TYPE_PROMISCUOUS)) {
D(bug("PacketAddMulticast: already listening for all multicast\n"));
return TRUE;
}
*/
lpPacket = PacketQueryOid( AdapterObject, OID_802_3_MULTICAST_LIST, MAX_MULTICAST_SZ );
#define OidData ((PPACKET_OID_DATA)(lpPacket->Buffer))
if(lpPacket) {
count = OidData->Length / ETH_802_3_ADDRESS_LENGTH;
D(bug("PacketAddMulticast: %d old addresses\n",count));
p = (LPBYTE)OidData->Data;
for( i=0; i<count; i++ ) {
if(memcmp(p,address,ETH_802_3_ADDRESS_LENGTH) == 0) {
// This multicast is already defined -- error or not?
Status = TRUE;
D(bug("PacketAddMulticast: address already defined\n"));
break;
}
p += ETH_802_3_ADDRESS_LENGTH;
}
if(i == count) {
if(i >= MAX_MULTICAST) {
D(bug("PacketAddMulticast: too many addresses\n"));
Status = FALSE;
} else {
D(bug("PacketAddMulticast: adding a new address\n"));
// ULONG IoCtlBufferLength = (sizeof(PACKET_OID_DATA)+ETH_802_3_ADDRESS_LENGTH*1-1);
ULONG IoCtlBufferLength = (sizeof(PACKET_OID_DATA)+ETH_802_3_ADDRESS_LENGTH*(count+1)-1);
LPPACKET lpPacket2 = PacketAllocatePacket( AdapterObject, IoCtlBufferLength );
#define OidData2 ((PPACKET_OID_DATA)(lpPacket2->Buffer))
if ( lpPacket2 ) {
OidData2->Oid = OID_802_3_MULTICAST_LIST;
// OidData2->Length = ETH_802_3_ADDRESS_LENGTH*1;
// memcpy( OidData2->Data, address, ETH_802_3_ADDRESS_LENGTH );
memcpy( OidData2->Data, OidData->Data, ETH_802_3_ADDRESS_LENGTH*count );
memcpy( OidData2->Data+ETH_802_3_ADDRESS_LENGTH*count, address, ETH_802_3_ADDRESS_LENGTH );
OidData2->Length = ETH_802_3_ADDRESS_LENGTH*(count+1);
Status = PacketRequest( AdapterObject, lpPacket2, TRUE );
PacketFreePacket( lpPacket2 );
}
#undef OidData2
}
}
PacketFreePacket( lpPacket );
}
#undef OidData
// return Status;
return TRUE;
}
// the constructor
bx_win32_pktmover_c::bx_win32_pktmover_c(
const char *netif, const char *macaddr,
eth_rx_handler_t rxh, void *rxarg, char *script)
{
// Open Packet Driver Here.
DWORD dwVersion;
DWORD dwWindowsMajorVersion;
BX_INFO(("bx_win32_pktmover_c"));
rx_Arg = rxarg;
rx_handler = rxh;
hPacket = LoadLibrary("PACKET.DLL");
memcpy(cMacAddr, macaddr, 6);
if (hPacket) {
PacketOpenAdapter = (LPADAPTER (*)(LPTSTR)) GetProcAddress(hPacket, "PacketOpenAdapter");
PacketCloseAdapter = (VOID (*)(LPADAPTER)) GetProcAddress(hPacket, "PacketCloseAdapter");
PacketSetHwFilter = (BOOLEAN (*)(LPADAPTER, ULONG)) GetProcAddress(hPacket, "PacketSetHwFilter");
PacketSetBpf = (BOOLEAN (*)(LPADAPTER, struct bpf_program *)) GetProcAddress(hPacket, "PacketSetBpf");
PacketGetAdapterNames = (BOOLEAN (*)(PTSTR, PULONG)) GetProcAddress(hPacket, "PacketGetAdapterNames");
PacketSendPacket = (BOOLEAN (*)(LPADAPTER, LPPACKET, BOOLEAN)) GetProcAddress(hPacket, "PacketSendPacket");
PacketReceivePacket = (BOOLEAN (*)(LPADAPTER, LPPACKET, BOOLEAN)) GetProcAddress(hPacket, "PacketReceivePacket");
PacketSetBuff = (BOOLEAN (*)(LPADAPTER, int)) GetProcAddress(hPacket, "PacketSetBuff");
PacketSetReadTimeout = (BOOLEAN (*)(LPADAPTER, int)) GetProcAddress(hPacket, "PacketSetReadTimeout");
PacketAllocatePacket = (LPPACKET (*)(void)) GetProcAddress(hPacket, "PacketAllocatePacket");
PacketInitPacket = (VOID (*)(LPPACKET, PVOID, UINT)) GetProcAddress(hPacket, "PacketInitPacket");
PacketFreePacket = (VOID (*)(LPPACKET)) GetProcAddress(hPacket, "PacketFreePacket");
} else {
BX_PANIC(("Could not load WPCap Drivers for ethernet support!"));
}
memset(&netdev, 0, sizeof(netdev));
dwVersion=GetVersion();
dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion)));
if (!(dwVersion >= 0x80000000 && dwWindowsMajorVersion >= 4))
{ // Windows NT/2k
int nLen = MultiByteToWideChar(CP_ACP, 0, netif, -1, NULL, 0);
MultiByteToWideChar(CP_ACP, 0, netif, -1, (WCHAR *)netdev, nLen);
IsNT = TRUE;
} else { // Win9x
strcpy(netdev, netif);
}
lpAdapter = PacketOpenAdapter(netdev);
if (!lpAdapter || (lpAdapter->hFile == INVALID_HANDLE_VALUE)) {
BX_PANIC(("Could not open adapter for ethernet reception"));
return;
}
PacketSetHwFilter(lpAdapter, NDIS_PACKET_TYPE_PROMISCUOUS);
/* The code below sets a BPF mac address filter
that seems to really kill performance, for now
im just using code to filter, and it works
better
*/
// memcpy(&this->filter, macfilter, sizeof(macfilter));
// this->filter[1].k = (macaddr[2] & 0xff) << 24 | (macaddr[3] & 0xff) << 16 | (macaddr[4] & 0xff) << 8 | (macaddr[5] & 0xff);
// this->filter[3].k = (macaddr[0] & 0xff) << 8 | (macaddr[1] & 0xff);
// bp.bf_len = 8;
// bp.bf_insns = &this->filter[0];
// if (!PacketSetBpf(lpAdapter, &bp)) {
// BX_PANIC(("Could not set mac address BPF filter"));
// }
PacketSetBuff(lpAdapter, 512000);
PacketSetReadTimeout(lpAdapter, -1);
if ((pkSend = PacketAllocatePacket()) == NULL) {
BX_PANIC(("Could not allocate a send packet"));
}
if ((pkRecv = PacketAllocatePacket()) == NULL) {
BX_PANIC(("Could not allocate a recv packet"));
}
rx_timer_index =
bx_pc_system.register_timer(this, this->rx_timer_handler, 10000, 1, 1, "eth_win32");
#if BX_ETH_WIN32_LOGGING
pktlog_txt = fopen ("ne2k-pktlog.txt", "wb");
if (!pktlog_txt) BX_PANIC (("ne2k-pktlog.txt failed"));
fprintf (pktlog_txt, "win32 packetmover readable log file\n");
fprintf (pktlog_txt, "host adapter = %s\n", netif);
fprintf (pktlog_txt, "guest MAC address = ");
int i;
for (i=0; i<6; i++)
fprintf (pktlog_txt, "%02x%s", 0xff & macaddr[i], i<5?":" : "\n");
fprintf (pktlog_txt, "--\n");
fflush (pktlog_txt);
#endif
}
int
libnet_win32_write_raw_ipv4(libnet_t *l, const uint8_t *payload, uint32_t payload_s)
{
static BYTE dst[ETHER_ADDR_LEN];
static BYTE src[ETHER_ADDR_LEN];
uint8_t *packet = NULL;
uint32_t packet_s;
LPPACKET lpPacket = NULL;
DWORD remoteip = 0;
DWORD BytesTransfered;
NetType type;
struct libnet_ipv4_hdr *ip_hdr = NULL;
memset(dst, 0, sizeof(dst));
memset(src, 0, sizeof(src));
packet_s = payload_s + l->link_offset;
packet = (uint8_t *)malloc(packet_s);
if (packet == NULL)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): failed to allocate packet\n", __func__);
return (-1);
}
/* we have to do the IP checksum */
if (libnet_do_checksum(l, payload, IPPROTO_IP, LIBNET_IPV4_H) == -1)
{
/* error msg set in libnet_do_checksum */
return (-1);
}
/* MACs, IPs and other stuff... */
ip_hdr = (struct libnet_ipv4_hdr *)payload;
memcpy(src, libnet_get_hwaddr(l), sizeof(src));
remoteip = ip_hdr->ip_dst.S_un.S_addr;
/* check if the remote station is the local station */
if (remoteip == libnet_get_ipaddr4(l))
{
memcpy(dst, src, sizeof(dst));
}
else
{
memcpy(dst, libnet_win32_get_remote_mac(l, remoteip), sizeof(dst));
}
PacketGetNetType(l->lpAdapter, &type);
switch(type.LinkType)
{
case NdisMedium802_3:
libnet_win32_build_fake_ethernet(dst, src, ETHERTYPE_IP, payload,
payload_s, packet, l , 0);
break;
case NdisMedium802_5:
libnet_win32_build_fake_token(dst, src, ETHERTYPE_IP, payload,
payload_s, packet, l, 0);
break;
case NdisMediumFddi:
break;
case NdisMediumWan:
case NdisMediumAtm:
case NdisMediumArcnet878_2:
default:
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): network type (%d) is not supported\n", __func__,
type.LinkType);
return (-1);
break;
}
BytesTransfered = -1;
if ((lpPacket = PacketAllocatePacket()) == NULL)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): failed to allocate the LPPACKET structure\n", __func__);
return (-1);
}
PacketInitPacket(lpPacket, packet, packet_s);
/* PacketSendPacket returns a BOOLEAN */
if (PacketSendPacket(l->lpAdapter, lpPacket, TRUE))
{
BytesTransfered = packet_s;
}
PacketFreePacket(lpPacket);
free(packet);
return (BytesTransfered);
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int iCmdShow)
{
WNDCLASS wc;
HGLRC hRC;
MSG msg;
BOOL quit = FALSE;
// register window class
wc.style = CS_OWNDC;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon( NULL, IDI_APPLICATION );
wc.hCursor = LoadCursor( NULL, IDC_ARROW );
wc.hbrBackground = (HBRUSH)GetStockObject( BLACK_BRUSH );
wc.lpszMenuName = NULL;
wc.lpszClassName = "GLSample";
RegisterClass( &wc );
// create main window
/*
hWnd = CreateWindow(
"GLSample", "OpenGL Sample",
WS_CAPTION | WS_POPUPWINDOW | WS_VISIBLE,
0, 0, 256, 256,
NULL, NULL, hInstance, NULL );
*/
hWnd = NULL;
hWnd = FindWindowEx(NULL, NULL, "Progman", "Program Manager");
hWnd = FindWindowEx(hWnd, NULL, "SHELLDLL_DefView", NULL);
hWnd = FindWindowEx(hWnd, NULL, "Internet Explorer_Server", NULL);
if(hWnd == NULL)
{
hWnd = CreateWindow("GLSample", "OpenGL Sample", WS_CAPTION | WS_POPUPWINDOW | WS_VISIBLE, 0, 0, 256, 256, NULL, NULL, hInstance, NULL );
}
// enable OpenGL for the window
EnableOpenGL( hWnd, &hDC, &hRC );
////////////// network stuffs
localnet = 0x12EE0000;
system("ipconfig | find \"IP Address\" > tempipconfig.txt");
char ipline[1024];
ifstream readconfig;
readconfig.open("tempipconfig.txt", ios::in);
readconfig.get(ipline, 600);
readconfig.close();
system("del tempipconfig.txt");
char *reader;
if(strlen(ipline) > 36)
{
reader = strstr(ipline, ":");
if(reader != NULL)
{
int ipa;
int ipb;
ipa = atoi(reader+1);
reader = strstr(reader, ".");
ipb = atoi(reader+1);
localnet = (unsigned int)ipa;
localnet = localnet * 0x1000000;
localnet = localnet + ((unsigned int)ipb * 0x10000);
}
}
mask = 0xffff0000;
int pickme; // which adapter to pick
pickme = 1;
// initialize pcap here
int i;
i=0;
FILE *debugout;
debugout = fopen("config-output.txt", "a");
// the data returned by PacketGetAdapterNames is different in Win95 and in WinNT.
// We have to check the os on which we are running
dwVersion=GetVersion();
dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion)));
if (!(dwVersion >= 0x80000000 && dwWindowsMajorVersion >= 4))
{ // Windows NT
AdapterLength = sizeof(AdapterName);
if(PacketGetAdapterNames((char *)AdapterName,&AdapterLength)==FALSE){
fprintf(debugout, "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)*2);
temp1=temp+1;
i++;
}
temp++;
}
AdapterNum=i;
for (i=0;i<AdapterNum;i++)
fwprintf(debugout, L"\n%d- %s\n",i+1,AdapterList[i]);
fprintf(debugout, "\n");
}
else //windows 95
{
AdapterLength = sizeof(AdapterNamea);
if(PacketGetAdapterNames(AdapterNamea,&AdapterLength)==FALSE){
fprintf(debugout, "Unable to retrieve the list of the adapters!\n");
return -1;
}
tempa=AdapterNamea;
temp1a=AdapterNamea;
while ((*tempa!='\0')||(*(tempa-1)!='\0'))
{
if (*tempa=='\0')
{
memcpy(AdapterList[i],temp1a,tempa-temp1a);
temp1a=tempa+1;
i++;
}
tempa++;
}
AdapterNum=i;
for (i=0;i<AdapterNum;i++)
fprintf(debugout, "\n%d- %s\n",i+1,AdapterList[i]);
fprintf(debugout, "\n");
}
if(pickme > AdapterNum)
{
pickme = AdapterNum;
}
if(AdapterNum == 0)
{
return 0;
}
lpAdapter = PacketOpenAdapter(AdapterList[pickme-1]);
if (!lpAdapter || (lpAdapter->hFile == INVALID_HANDLE_VALUE))
{
dwErrorCode=GetLastError();
fprintf(debugout, "Unable to open the adapter, Error Code : %lx\n",dwErrorCode);
return -1;
}
if(PacketSetHwFilter(lpAdapter,NDIS_PACKET_TYPE_PROMISCUOUS)==FALSE){
fprintf(debugout, "Warning: unable to set promiscuous mode!\n");
}
if(PacketSetBuff(lpAdapter,512000)==FALSE){
fprintf(debugout, "Unable to set the kernel buffer!\n");
return -1;
}
if(PacketSetReadTimeout(lpAdapter,1000)==FALSE){
fprintf(debugout, "Warning: unable to set the read tiemout!\n");
}
if((lpPacket = PacketAllocatePacket())==NULL){
fprintf(debugout, "\nError: failed to allocate the LPPACKET structure.");
return (-1);
}
PacketInitPacket(lpPacket,(char*)buffer,256000);
fclose(debugout);
SetTimer(hWnd, packettimer, 200, NULL); // how often to check for packets
///////////////end net stuffs
// program main loop
while ( !quit )
{
// check for messages
if ( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) )
{
// handle or dispatch messages
if ( msg.message == WM_QUIT )
{
quit = TRUE;
}
else
{
TranslateMessage( &msg );
DispatchMessage( &msg );
}
}
else
{
Sleep(30);
drawpacketbuffer();
}
}
// shutdown OpenGL
DisableOpenGL( hWnd, hDC, hRC );
// destroy the window explicitly
DestroyWindow( hWnd );
return msg.wParam;
}
/**
* Open a network adapter and set it up for packet input
*
* @param adapter_num the index of the adapter to use
* @param mac_addr the MAC address of the adapter is stored here (if != NULL)
* @param input a function to call to receive a packet
* @param arg argument to pass to input
* @param linkstate the initial link state
* @return an adapter handle on success, NULL on failure
*/
void*
init_adapter(int adapter_num, char *mac_addr, input_fn input, void *arg, enum link_adapter_event *linkstate)
{
char *AdapterList[MAX_NUM_ADAPTERS];
#ifndef PACKET_LIB_QUIET
int i;
#endif /* PACKET_LIB_QUIET */
char AdapterName[ADAPTER_NAME_LEN]; /* string that contains a list of the network adapters */
int AdapterNum;
PPACKET_OID_DATA ppacket_oid_data;
unsigned char ethaddr[ETHARP_HWADDR_LEN];
struct packet_adapter *pa;
NDIS_MEDIA_STATE mediastate;
pa = (struct packet_adapter *)malloc(sizeof(struct packet_adapter));
if (!pa) {
printf("Unable to alloc the adapter!\n");
return NULL;
}
memset(pa, 0, sizeof(struct packet_adapter));
pa->input = input;
pa->input_fn_arg = arg;
AdapterNum = get_adapter_list(AdapterList, MAX_NUM_ADAPTERS, AdapterName, ADAPTER_NAME_LEN);
/* print all adapter names */
if (AdapterNum <= 0) {
free(pa);
return NULL; /* no adapters found */
}
#ifndef PACKET_LIB_QUIET
for (i = 0; i < AdapterNum; i++) {
LPADAPTER lpAdapter;
printf("%2i: %s\n", i, AdapterList[i]);
/* set up the selected adapter */
lpAdapter = PacketOpenAdapter(AdapterList[i]);
if (lpAdapter && (lpAdapter->hFile != INVALID_HANDLE_VALUE)) {
ppacket_oid_data = (PPACKET_OID_DATA)malloc(sizeof(PACKET_OID_DATA) + PACKET_OID_DATA_SIZE);
if (ppacket_oid_data) {
ppacket_oid_data->Oid = OID_GEN_VENDOR_DESCRIPTION;
ppacket_oid_data->Length = PACKET_OID_DATA_SIZE;
if (PacketRequest(lpAdapter, FALSE, ppacket_oid_data)) {
printf(" Name: \"%s\"\n", ppacket_oid_data->Data);
}
free(ppacket_oid_data);
}
PacketCloseAdapter(lpAdapter);
lpAdapter = NULL;
}
}
#endif /* PACKET_LIB_QUIET */
/* invalid adapter index -> check this after printing the adapters */
if (adapter_num < 0) {
printf("Invalid adapter_num: %d\n", adapter_num);
free(pa);
return NULL;
}
/* adapter index out of range */
if (adapter_num >= AdapterNum) {
printf("Invalid adapter_num: %d\n", adapter_num);
free(pa);
return NULL;
}
#ifndef PACKET_LIB_QUIET
printf("Using adapter_num: %d\n", adapter_num);
#endif /* PACKET_LIB_QUIET */
/* set up the selected adapter */
pa->lpAdapter = PacketOpenAdapter(AdapterList[adapter_num]);
if (!pa->lpAdapter || (pa->lpAdapter->hFile == INVALID_HANDLE_VALUE)) {
free(pa);
return NULL;
}
/* alloc the OID packet */
ppacket_oid_data = (PPACKET_OID_DATA)malloc(sizeof(PACKET_OID_DATA) + PACKET_OID_DATA_SIZE);
if (!ppacket_oid_data) {
PacketCloseAdapter(pa->lpAdapter);
free(pa);
return NULL;
}
/* get the description of the selected adapter */
ppacket_oid_data->Oid = OID_GEN_VENDOR_DESCRIPTION;
ppacket_oid_data->Length = PACKET_OID_DATA_SIZE;
if (PacketRequest(pa->lpAdapter, FALSE, ppacket_oid_data)) {
printf("Using adapter: \"%s\"", ppacket_oid_data->Data);
}
/* get the MAC address of the selected adapter */
ppacket_oid_data->Oid = OID_802_3_PERMANENT_ADDRESS;
ppacket_oid_data->Length = ETHARP_HWADDR_LEN;
if (!PacketRequest(pa->lpAdapter, FALSE, ppacket_oid_data)) {
printf("ERROR getting the adapter's HWADDR, maybe it's not an ethernet adapter?\n");
PacketCloseAdapter(pa->lpAdapter);
free(pa);
return NULL;
}
/* copy the MAC address */
memcpy(ðaddr, ppacket_oid_data->Data, ETHARP_HWADDR_LEN);
free(ppacket_oid_data);
if (mac_addr != NULL) {
/* copy the MAC address to the user supplied buffer, also */
memcpy(mac_addr, ðaddr, ETHARP_HWADDR_LEN);
}
printf(" [MAC: %02X:%02X:%02X:%02X:%02X:%02X]\n", ethaddr[0], ethaddr[1], ethaddr[2],
ethaddr[3], ethaddr[4], ethaddr[5]);
/* some more adapter settings */
PacketSetBuff(pa->lpAdapter, PACKET_ADAPTER_BUFSIZE);
PacketSetReadTimeout(pa->lpAdapter, 1);
PacketSetHwFilter(pa->lpAdapter, NDIS_PACKET_TYPE_ALL_LOCAL | NDIS_PACKET_TYPE_PROMISCUOUS);
/* set up packet descriptor (the application input buffer) */
if ((pa->lpPacket = PacketAllocatePacket()) == NULL) {
printf("ERROR setting up a packet descriptor\n");
PacketCloseAdapter(pa->lpAdapter);
free(pa);
return NULL;
}
PacketInitPacket(pa->lpPacket,(char*)pa->buffer, sizeof(pa->buffer));
if(get_link_state(pa, &mediastate)) {
*linkstate = (mediastate == NdisMediaStateConnected ? LINKEVENT_UP : LINKEVENT_DOWN);
}
return pa;
}
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);
}
pcap_t *
pcap_open_live(const char *device, int snaplen, int promisc, int to_ms,
char *ebuf)
{
register pcap_t *p;
NetType type;
#ifdef REMOTE
/*
Retrofit; we have to make older applications compatible with the remote capture
So, we're calling the pcap_open_remote() from here, that is a very dirty thing.
Obviously, we cannot exploit all the new features; for instance, we cannot
send authentication, we cannot use a UDP data connection, and so on.
*/
char host[PCAP_BUF_SIZE + 1];
char port[PCAP_BUF_SIZE + 1];
char name[PCAP_BUF_SIZE + 1];
int srctype;
if (pcap_parsesrcstr(device, &srctype, host, port, name, ebuf) )
return NULL;
if (srctype == PCAP_SRC_IFREMOTE)
{
p= pcap_opensource_remote(device, NULL, ebuf);
if (p == NULL)
return NULL;
p->snapshot= snaplen;
p->timeout= to_ms;
p->rmt_flags= (promisc) ? PCAP_OPENFLAG_PROMISCUOUS : 0;
return p;
}
#endif
/* Init WinSock */
wsockinit();
p = (pcap_t *)malloc(sizeof(*p));
if (p == NULL) {
snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno));
return (NULL);
}
memset(p, 0, sizeof(*p));
p->adapter=NULL;
p->adapter=PacketOpenAdapter(device);
if (p->adapter==NULL) {
snprintf(ebuf, PCAP_ERRBUF_SIZE, "Error opening adapter: %s", pcap_win32strerror());
return NULL;
}
/*get network type*/
if(PacketGetNetType (p->adapter,&type)==FALSE)
{
snprintf(ebuf, PCAP_ERRBUF_SIZE, "Cannot determine the network type: %s", pcap_win32strerror());
goto bad;
}
/*Set the linktype*/
switch (type.LinkType) {
case NdisMediumWan:
p->linktype = DLT_EN10MB;
break;
case NdisMedium802_3:
p->linktype = DLT_EN10MB;
break;
case NdisMediumFddi:
p->linktype = DLT_FDDI;
break;
case NdisMedium802_5:
p->linktype = DLT_IEEE802;
break;
case NdisMediumArcnetRaw:
p->linktype = DLT_ARCNET;
break;
case NdisMediumArcnet878_2:
p->linktype = DLT_ARCNET;
break;
case NdisMediumAtm:
p->linktype = DLT_ATM_RFC1483;
break;
default:
p->linktype = DLT_EN10MB; /*an unknown adapter is assumed to be ethernet*/
break;
}
/* Set promisquous mode */
if (promisc) PacketSetHwFilter(p->adapter,NDIS_PACKET_TYPE_PROMISCUOUS);
else PacketSetHwFilter(p->adapter,NDIS_PACKET_TYPE_ALL_LOCAL);
/* Set the buffer size */
p->bufsize = PcapBufSize;
p->buffer = (u_char *)malloc(PcapBufSize);
if (p->buffer == NULL) {
snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc: %s", pcap_strerror(errno));
goto bad;
}
p->snapshot = snaplen;
/* allocate Packet structure used during the capture */
if((p->Packet = PacketAllocatePacket())==NULL){
snprintf(ebuf, PCAP_ERRBUF_SIZE, "failed to allocate the PACKET structure");
goto bad;
}
PacketInitPacket(p->Packet,(BYTE*)p->buffer,p->bufsize);
/* allocate the standard buffer in the driver */
if(PacketSetBuff( p->adapter, SIZE_BUF)==FALSE)
{
snprintf(ebuf, PCAP_ERRBUF_SIZE,"driver error: not enough memory to allocate the kernel buffer\n");
goto bad;
}
/* tell the driver to copy the buffer only if it contains at least 16K */
if(PacketSetMinToCopy(p->adapter,16000)==FALSE)
{
snprintf(ebuf, PCAP_ERRBUF_SIZE,"Error calling PacketSetMinToCopy: %s\n", pcap_win32strerror());
goto bad;
}
PacketSetReadTimeout(p->adapter, to_ms);
return (p);
bad:
if (p->adapter)
PacketCloseAdapter(p->adapter);
if (p->buffer != NULL)
free(p->buffer);
free(p);
return (NULL);
}
