comdef.h

文件加密的过滤驱动程序源代码.

//////////////////////////////////////////////////////////////////////////////////////
//ComDef.h
//
//Common definition in Both device and user interface programme.


#if !defined(FG_COMDEF_H_1_1)
#define FG_COMDEF_H_1_1

#define MAXLEN MAX_PATH
#define CIPHER_LEN  32
#define DEF_MAX_BAK_NUM  1

//types of protection:
#define PT_DELETE  	0x1
#define PT_WRITE	0x2
#define PT_READ		 0x4
#define PT_HIDE		  0x8

//DeviceIOControl codes:
#define	FG_DIOC_INSTALL_HOOK	32001
#define	FG_DIOC_UNINSTALL_HOOK	32002
#define	FG_DIOC_FLUSH_PROTECTED_FILE_INFO	32004
#define	FG_DIOC_READ_PROTECTED_FILE_INFO	FG_DIOC_FLUSH_PROTECTED_FILE_INFO
#define	FG_DIOC_ADD_PROTECTED_FILE	32005
#define FG_DIOC_SAVE_PROTECTED_FILE_INFO	32006		//Unused.
#define FG_DIOC_REMOVE_PROTECTED_FILE	32007
#define FG_DIOC_GET_HWND	32008
#define FG_DIOC_DEBUG		32009
#define FG_DIOC_EXTRA_INFO		32010
#define FG_SET_DEVICE_BUSY		32011

//Shell message:                 
#define	SM_DEVICE_FATAL_ERROR	(0x0450+0xE1)
#define SM_DEVICE_ERROR		(0x0450+0xE2)
#define SM_SHOW_WINDOW	 (0x0450+0xE3)

#ifdef FG_VXD

struct FSD_PATH		
{
	int drive;					//the drive volume.
	ParsedPath *ppath;		//the Canonicalized Path which FSD receives.
	int flag;						//file flag.
};

#endif
	
extern	WORD defProtectionType;

//Struct PROTECTED_FILE:
struct PROTECTED_FILE
{
		char *PF_pPath;
		WORD PF_type;
		BYTE PF_priority;

#ifdef  FG_VXD
		FSD_PATH PF_fsdPath;		//used only in vxd
#endif

		PROTECTED_FILE()
		{
			PF_pPath=NULL;
			PF_type=defProtectionType;
#ifdef FG_VXD
			PF_fsdPath.ppath=NULL;
#endif
		}

		PROTECTED_FILE(const char *pPath, WORD type)
		{
			PF_pPath=(char *)pPath;
			PF_type=type;
#ifdef FG_VXD
			PF_fsdPath.ppath=NULL;
#endif
		}

		//when destroy the object , the destroyed is always obliged to 
		//free the memory PF_pPath pointed to.
};

//Gobal functions:
int ErrorHandler(unsigned int err, int severity=1);
int StringToFileInfo(const char *buf, PROTECTED_FILE *pProtFile, char *path);
int GetDir(char *pPath);
//BOOL PatternMatchW(WCHAR *uniPattern, WCHAR *uniMatcher, unsigned int patternLen, unsigned int matcherLen);
template <class PCHAR_T> BOOL PatternMatch(PCHAR_T pattern, PCHAR_T matcher, unsigned int patternLen, unsigned int matcherLen);

//Other definitions:
#define RECORD_LEN	11		//length of an record containing protected file information, excluding path length.

#endif //!defined(FG_COMDEF_H_1_1)