fpdfsecurity.h

Go to the documentation of this file.

#ifndef _FPDFSECURITY_H_
#define _FPDFSECURITY_H_

#ifndef _FPDFVIEW_H_
#include "fpdfview.h"
#endif

#ifdef _WIN32

#define DLLEXPORT __declspec( dllexport )
#define STDCALL __stdcall
#define CDECL   _cdecl
#else
#define DLLEXPORT
#define STDCALL
#define CDECL
#endif


#ifdef __cplusplus
extern "C" {
#endif

typedef void* FPDF_DECRYPT_OUTPUT;

#define FPDF_PERM_PRINT                         0x0004                   

#define FPDF_PERM_MODIFY                        0x0008                   

#define FPDF_PERM_EXTRACT                       0x0010                   

#define FPDF_PERM_ANNOT_FORM            0x0020                   

#define FPDF_PERM_FILL_FORM                     0x0100                   

#define FPDF_PERM_EXTRACT_ACCESS        0x0200                   

#define FPDF_PERM_ASSEMBLE                      0x0400                   

#define FPDF_PERM_PRINT_HIGH            0x0800                    

#define FPDFCIPHER_NONE 0
#define FPDFCIPHER_RC4  1
#define FPDFCIPHER_AES  2

struct FPDF_SECURITY_HANDLER
{
        void*   (CDECL *CreateHandler)();

        unsigned long   (CDECL *GetPermissions)(void* handler,unsigned long permission);
        
        void*   (CDECL *CreateFilter)(void* handler, int objnum, int version);
        
        int             (CDECL *FilterInput)(void* filter, FPDF_DECRYPT_OUTPUT output, FPDF_BYTESTRING src_data, int src_len);

        int             (CDECL *FinishFilter)(void* filter, FPDF_DECRYPT_OUTPUT output);

        void    (CDECL *FinishHandler)(void* handler);
        
        FPDF_BOOL       (CDECL *GetCryptInfo)(void* handler,int* cipher,unsigned char * buffer, int*  keylen);

         FPDF_DWORD (CDECL *EncryptGetSize)(void* handler,int objnum, int version, unsigned char* src_buf, FPDF_DWORD src_size);

         FPDF_BOOL      (CDECL *EncryptContent)(void* handler,int objnum, int version, unsigned char* src_buf, FPDF_DWORD src_size,
                                                        unsigned char* dest_buf, FPDF_DWORD* dest_size);

};
DLLEXPORT void STDCALL FPDF_RegisterSecurityHandler(FPDF_BYTESTRING handler_name, 
                                                                                                struct FPDF_SECURITY_HANDLER* pHandler);


DLLEXPORT void STDCALL FPDF_DestroySecurityHandler(FPDF_BYTESTRING handler_name, 
                                                                                                struct FPDF_SECURITY_HANDLER* pHandler);


DLLEXPORT FPDF_BOOL STDCALL FPDF_OutputDecrypted(FPDF_DECRYPT_OUTPUT output, FPDF_BYTESTRING data, int len);

DLLEXPORT FPDF_BOOL STDCALL FPDF_CustomEncrypt(FPDF_DOCUMENT document, FPDF_STRING handler_name, FPDF_SECURITY_HANDLER* pHandler,FPDF_FILEWRITE* fileWrite);

DLLEXPORT FPDF_BOOL STDCALL FPDF_RemoveSecurity(FPDF_DOCUMENT document, FPDF_FILEWRITE* fileWrite);

DLLEXPORT int STDCALL FPDF_GetPasswordLevel(FPDF_DOCUMENT doc);

#ifdef __cplusplus
};
#endif

#endif