www.pudn.com > DrvFltIp_source.zip > DrvFltIp.h

/* 
 
  DrvFltIp.H 
 
  Author: your name 
  Last Updated: 2001-01-01/0101 
 
  This framework is generated by QuickSYS. 
 
*/ 
 
 
// 
// Define the various device type values.  Note that values used by Microsoft 
// Corporation are in the range 0-32767, and 32768-65535 are reserved for use 
// by customers. 
// 
 
#define FILE_DEVICE_DRVFLTIP  0x00654322 
 
 
 
// 
// Macro definition for defining IOCTL and FSCTL function control codes.  Note 
// that function codes 0-2047 are reserved for Microsoft Corporation, and 
// 2048-4095 are reserved for customers. 
// 
 
#define DRVFLTIP_IOCTL_INDEX  0x830 
 
 
 
// 
// The MONO device driver IOCTLs 
// 
#define START_IP_HOOK CTL_CODE(FILE_DEVICE_DRVFLTIP, DRVFLTIP_IOCTL_INDEX,METHOD_BUFFERED, FILE_ANY_ACCESS) 
 
#define STOP_IP_HOOK CTL_CODE(FILE_DEVICE_DRVFLTIP, DRVFLTIP_IOCTL_INDEX+1, METHOD_BUFFERED, FILE_ANY_ACCESS) 
 
#define ADD_FILTER CTL_CODE(FILE_DEVICE_DRVFLTIP, DRVFLTIP_IOCTL_INDEX+2, METHOD_BUFFERED, FILE_WRITE_ACCESS) 
 
#define CLEAR_FILTER CTL_CODE(FILE_DEVICE_DRVFLTIP, DRVFLTIP_IOCTL_INDEX+3, METHOD_BUFFERED, FILE_ANY_ACCESS) 
 
 
 
//struct to define filter rules 
typedef struct filter 
{ 
	USHORT protocol;		//protocol used 
 
	ULONG sourceIp;			//source ip address 
	ULONG destinationIp;	//destination ip address 
 
	ULONG sourceMask;		//source mask 
	ULONG destinationMask;	//destination mask 
 
	USHORT sourcePort;		//source port 
	USHORT destinationPort; //destination port 
	 
	BOOLEAN drop;			//if true, the packet will be drop, otherwise the packet pass 
}IPFilter; 
 
 
 
//struct to build a linked list  
struct filterList 
{ 
	IPFilter ipf; 
 
	struct filterList *next; 
}; 
 
 
//Ip Header 
typedef struct IPHeader  
{ 
    UCHAR     iphVerLen;      // Version and length  
    UCHAR     ipTOS;          // Type of service  
    USHORT    ipLength;       // Total datagram length  
    USHORT    ipID;		      // Identification  
    USHORT    ipFlags;	      // Flags 
    UCHAR     ipTTL;	      // Time to live  
    UCHAR     ipProtocol;	  // Protocol  
    USHORT    ipChecksum;     // Header checksum  
    ULONG     ipSource;       // Source address  
    ULONG     ipDestination;  // Destination address  
} IPPacket;  
 
 
//TCP Header 
typedef struct _TCPHeader 
{ 
	USHORT			sourcePort;			// Source Port 
	USHORT			destinationPort;	// Destination Port 
	ULONG			sequenceNumber;		// Number of Sequence 
	ULONG			acknowledgeNumber;	// Number of aknowledge 
	UCHAR			dataoffset;			// Pointer to data 
	UCHAR			flags;				// Flags 
	USHORT			windows;			// Size of window 
	USHORT			checksum;			// Total checksum 
	USHORT			urgentPointer;		// Urgent pointer 
} TCPHeader; 
 
 
//UDP Header 
typedef struct _UDPHeader 
{ 
	USHORT			sourcePort;			// Source Port 
	USHORT			destinationPort;	// Destination Port 
	USHORT			len;				// Total length 
	USHORT			checksum;			// Total checksum 
} UDPHeader;