/**
 * Copyright (C) 2006-2020 Henning Norén
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
 * USA.
 */

#ifndef _PDFCOMMON_H_
#define _PDFCOMMON_H_

#include <stdint.h>
#include <stdbool.h>

#define likely(x)       __builtin_expect((x),1)
#define unlikely(x)     __builtin_expect((x),0)

/** 
    EncData holds all the information regarding the encryption-setting of a 
    specific pdf. 
    s_handler - Security handler string.
    o_string - Owner-string, 32 bytes, not null-terminated
    u_string - User-string, 32 bytes, not null-terminated
    fileID - file ID in fileIDLen bytes, not null-terminated
*/
struct EncData {
  char *s_handler;
  uint8_t *o_string;
  uint8_t *u_string;
  uint8_t *fileID;
  bool encryptMetaData;
  unsigned int fileIDLen;
  unsigned int version_major;
  unsigned int version_minor;
  unsigned int length;
  int permissions;
  int revision;
  int version;
};

typedef struct EncData EncData;

typedef enum passwordMethod {
  Wordlist=1,
  Generative
} passwordMethod;

void
freeEncData(EncData *e);

void
printEncData(EncData *e);

#endif /** _PDFCOMMON_H_ */
