packet32.h

ARP欺骗的代码

#define ADAPTER_NAME_LENGTH 256 + 12	///<  Maximum length for the name of an adapter. The value is the same used by the IP Helper API.
#define ADAPTER_DESC_LENGTH 128			///<  Maximum length for the description of an adapter. The value is the same used by the IP Helper API.
#define MAX_MAC_ADDR_LENGTH 8			///<  Maximum length for the link layer address of an adapter. The value is the same used by the IP Helper API.
#define MAX_NETWORK_ADDRESSES 16		///<  Maximum length for the link layer address of an adapter. The value is the same used by the IP Helper API.


typedef struct WAN_ADAPTER_INT WAN_ADAPTER; ///< Describes an opened wan (dialup, VPN...) network adapter using the NetMon API
typedef WAN_ADAPTER *PWAN_ADAPTER; ///< Describes an opened wan (dialup, VPN...) network adapter using the NetMon API

#define INFO_FLAG_NDIS_ADAPTER		0	///< Flag for ADAPTER_INFO: this is a traditional ndis adapter
#define INFO_FLAG_NDISWAN_ADAPTER	1	///< Flag for ADAPTER_INFO: this is a NdisWan adapter
#define INFO_FLAG_DAG_CARD			2	///< Flag for ADAPTER_INFO: this is a DAG card
#define INFO_FLAG_DAG_FILE			6	///< Flag for ADAPTER_INFO: this is a DAG file
#define INFO_FLAG_DONT_EXPORT		8	///< Flag for ADAPTER_INFO: when this flag is set, the adapter will not be listed or openend by winpcap. This allows to prevent exporting broken network adapters, like for example FireWire ones.

/*!
  \brief Contains comprehensive information about a network adapter.

  This structure is filled with all the accessory information that the user can need about an adapter installed
  on his system.
*/
typedef struct _ADAPTER_INFO  
{
	struct _ADAPTER_INFO *Next;				///< Pointer to the next adapter in the list.
	CHAR Name[ADAPTER_NAME_LENGTH + 1];		///< Name of the device representing the adapter.
	CHAR Description[ADAPTER_DESC_LENGTH + 1];	///< Human understandable description of the adapter
	UINT MacAddressLen;						///< Length of the link layer address.
	UCHAR MacAddress[MAX_MAC_ADDR_LENGTH];	///< Link layer address.
	NetType LinkLayer;						///< Physical characteristics of this adapter. This NetType structure contains the link type and the speed of the adapter.
	INT NNetworkAddresses;					///< Number of network layer addresses of this adapter.
	npf_if_addr *NetworkAddresses;			///< Pointer to an array of npf_if_addr, each of which specifies a network address of this adapter.
	UINT Flags;								///< Adapter's flags. Tell if this adapter must be treated in a different way, using the Netmon API or the dagc API.
}
ADAPTER_INFO, *PADAPTER_INFO;

/*!
  \brief Describes an opened network adapter.

  This structure is the most important for the functioning of packet.dll, but the great part of its fields
  should be ignored by the user, since the library offers functions that avoid to cope with low-level parameters
*/
typedef struct _ADAPTER  { 
	HANDLE hFile;				///< \internal Handle to an open instance of the NPF driver.
	CHAR  SymbolicLink[MAX_LINK_NAME_LENGTH]; ///< \internal A string containing the name of the network adapter currently opened.
	int NumWrites;				///< \internal Number of times a packets written on this adapter will be repeated 
								///< on the wire.
	HANDLE ReadEvent;			///< A notification event associated with the read calls on the adapter.
								///< It can be passed to standard Win32 functions (like WaitForSingleObject
								///< or WaitForMultipleObjects) to wait until the driver's buffer contains some 
								///< data. It is particularly useful in GUI applications that need to wait 
								///< concurrently on several events. In Windows NT/2000 the PacketSetMinToCopy()
								///< function can be used to define the minimum amount of data in the kernel buffer
								///< that will cause the event to be signalled. 
	
	UINT ReadTimeOut;			///< \internal The amount of time after which a read on the driver will be released and 
								///< ReadEvent will be signaled, also if no packets were captured
	CHAR Name[ADAPTER_NAME_LENGTH];
	PWAN_ADAPTER pWanAdapter;
	UINT Flags;					///< Adapter's flags. Tell if this adapter must be treated in a different way, using the Netmon API or the dagc API.
#ifdef HAVE_DAG_API
	dagc_t *pDagCard;			///< Pointer to the dagc API adapter descriptor for this adapter
	PCHAR DagBuffer;			///< Pointer to the buffer with the packets that is received from the DAG card
	struct timeval DagReadTimeout;	///< Read timeout. The dagc API requires a timeval structure
	unsigned DagFcsLen;			///< Length of the frame check sequence attached to any packet by the card. Obtained from the registry
	DWORD DagFastProcess;		///< True if the user requests fast capture processing on this card. Higher level applications can use this value to provide a faster but possibly unprecise capture (for example, libpcap doesn't convert the timestamps).
#endif // HAVE_DAG_API
}  ADAPTER, *LPADAPTER;

/*!
  \brief Structure that contains a group of packets coming from the driver.

  This structure defines the header associated with every packet delivered to the application.
*/
typedef struct _PACKET {  
	HANDLE       hEvent;		///< \deprecated Still present for compatibility with old applications.
	OVERLAPPED   OverLapped;	///< \deprecated Still present for compatibility with old applications.
	PVOID        Buffer;		///< Buffer with containing the packets. See the PacketReceivePacket() for
								///< details about the organization of the data in this buffer
	UINT         Length;		///< Length of the buffer
	DWORD        ulBytesReceived;	///< Number of valid bytes present in the buffer, i.e. amount of data
									///< received by the last call to PacketReceivePacket()
	BOOLEAN      bIoComplete;	///< \deprecated Still present for compatibility with old applications.
}  PACKET, *LPPACKET;

/*!
  \brief Structure containing an OID request.

  It is used by the PacketRequest() function to send an OID to the interface card driver. 
  It can be used, for example, to retrieve the status of the error counters on the adapter, its MAC address, 
  the list of the multicast groups defined on it, and so on.
*/
struct _PACKET_OID_DATA {
    ULONG Oid;					///< OID code. See the Microsoft DDK documentation or the file ntddndis.h
								///< for a complete list of valid codes.
    ULONG Length;				///< Length of the data field
    UCHAR Data[1];				///< variable-lenght field that contains the information passed to or received 
								///< from the adapter.
}; 
typedef struct _PACKET_OID_DATA PACKET_OID_DATA, *PPACKET_OID_DATA;


#if _DBG
#define ODS(_x) OutputDebugString(TEXT(_x))
#define ODSEx(_x, _y)
#else
#ifdef _DEBUG_TO_FILE
/*! 
  \brief Macro to print a debug string. The behavior differs depending on the debug level
*/
#define ODS(_x) { \
	FILE *f; \
	f = fopen("winpcap_debug.txt", "a"); \
	fprintf(f, "%s", _x); \
	fclose(f); \
}
/*! 
  \brief Macro to print debug data with the printf convention. The behavior differs depending on 
  the debug level
*/
#define ODSEx(_x, _y) { \
	FILE *f; \
	f = fopen("winpcap_debug.txt", "a"); \
	fprintf(f, _x, _y); \
	fclose(f); \
}



LONG PacketDumpRegistryKey(PCHAR KeyName, PCHAR FileName);
#else
#define ODS(_x)		
#define ODSEx(_x, _y)
#endif
#endif

/* We load dinamically the dag library in order link it only when it's present on the system */
#ifdef HAVE_DAG_API
typedef dagc_t* (*dagc_open_handler)(const char *source, unsigned flags, char *ebuf);	///< prototype used to dynamically load the dag dll
typedef void (*dagc_close_handler)(dagc_t *dagcfd);										///< prototype used to dynamically load the dag dll
typedef int (*dagc_getlinktype_handler)(dagc_t *dagcfd);								///< prototype used to dynamically load the dag dll
typedef int (*dagc_getlinkspeed_handler)(dagc_t *dagcfd);								///< prototype used to dynamically load the dag dll
typedef int (*dagc_setsnaplen_handler)(dagc_t *dagcfd, unsigned snaplen);				///< prototype used to dynamically load the dag dll
typedef unsigned (*dagc_getfcslen_handler)(dagc_t *dagcfd);								///< prototype used to dynamically load the dag dll
typedef int (*dagc_receive_handler)(dagc_t *dagcfd, u_char **buffer, u_int *bufsize);	///< prototype used to dynamically load the dag dll
typedef int (*dagc_stats_handler)(dagc_t *dagcfd, dagc_stats_t *ps);					///< prototype used to dynamically load the dag dll
typedef int (*dagc_wait_handler)(dagc_t *dagcfd, struct timeval *timeout);				///< prototype used to dynamically load the dag dll
typedef int (*dagc_finddevs_handler)(dagc_if_t **alldevsp, char *ebuf);					///< prototype used to dynamically load the dag dll
typedef int (*dagc_freedevs_handler)(dagc_if_t *alldevsp);								///< prototype used to dynamically load the dag dll
#endif // HAVE_DAG_API

#ifdef __cplusplus
extern "C" {
#endif

/**
 *  @}
 */

// The following is used to check the adapter name in PacketOpenAdapterNPF and prevent 
// opening of firewire adapters 
#define FIREWIRE_SUBSTR L"1394"

void PacketPopulateAdaptersInfoList();
PWCHAR SChar2WChar(PCHAR string);
PCHAR WChar2SChar(PWCHAR string);
BOOL PacketGetFileVersion(LPTSTR FileName, PCHAR VersionBuff, UINT VersionBuffLen);
PADAPTER_INFO PacketFindAdInfo(PCHAR AdapterName);
BOOLEAN PacketUpdateAdInfo(PCHAR AdapterName);
BOOLEAN IsFireWire(TCHAR *AdapterDesc);


//---------------------------------------------------------------------------
// EXPORTED FUNCTIONS
//---------------------------------------------------------------------------

PCHAR PacketGetVersion();
PCHAR PacketGetDriverVersion();
BOOLEAN PacketSetMinToCopy(LPADAPTER AdapterObject,int nbytes);
BOOLEAN PacketSetNumWrites(LPADAPTER AdapterObject,int nwrites);
BOOLEAN PacketSetMode(LPADAPTER AdapterObject,int mode);
BOOLEAN PacketSetReadTimeout(LPADAPTER AdapterObject,int timeout);
BOOLEAN PacketSetBpf(LPADAPTER AdapterObject,struct bpf_program *fp);
INT PacketSetSnapLen(LPADAPTER AdapterObject,int snaplen);
BOOLEAN PacketGetStats(LPADAPTER AdapterObject,struct bpf_stat *s);
BOOLEAN PacketGetStatsEx(LPADAPTER AdapterObject,struct bpf_stat *s);
BOOLEAN PacketSetBuff(LPADAPTER AdapterObject,int dim);
BOOLEAN PacketGetNetType (LPADAPTER AdapterObject,NetType *type);
LPADAPTER PacketOpenAdapter(PCHAR AdapterName);
BOOLEAN PacketSendPacket(LPADAPTER AdapterObject,LPPACKET pPacket,BOOLEAN Sync);
INT PacketSendPackets(LPADAPTER AdapterObject,PVOID PacketBuff,ULONG Size, BOOLEAN Sync);
LPPACKET PacketAllocatePacket(void);
VOID PacketInitPacket(LPPACKET lpPacket,PVOID  Buffer,UINT  Length);
VOID PacketFreePacket(LPPACKET lpPacket);
BOOLEAN PacketReceivePacket(LPADAPTER AdapterObject,LPPACKET lpPacket,BOOLEAN Sync);
BOOLEAN PacketSetHwFilter(LPADAPTER AdapterObject,ULONG Filter);
BOOLEAN PacketGetAdapterNames(PTSTR pStr,PULONG  BufferSize);
BOOLEAN PacketGetNetInfoEx(PCHAR AdapterName, npf_if_addr* buffer, PLONG NEntries);
BOOLEAN PacketRequest(LPADAPTER  AdapterObject,BOOLEAN Set,PPACKET_OID_DATA  OidData);
HANDLE PacketGetReadEvent(LPADAPTER AdapterObject);
BOOLEAN PacketSetDumpName(LPADAPTER AdapterObject, void *name, int len);
BOOLEAN PacketSetDumpLimits(LPADAPTER AdapterObject, UINT maxfilesize, UINT maxnpacks);
BOOLEAN PacketIsDumpEnded(LPADAPTER AdapterObject, BOOLEAN sync);
BOOL PacketStopDriver();
VOID PacketCloseAdapter(LPADAPTER lpAdapter);

#ifdef __cplusplus
}
#endif 

#endif //__PACKET32