pico-hsm/file.h

#ifndef _FILE_H_
#define _FILE_H_

#include <stdlib.h>
#include "pico/stdlib.h"

#define FILE_TYPE_UNKNOWN       0x00
#define FILE_TYPE_DF            0x04
#define FILE_TYPE_INTERNAL_EF	0x03
#define FILE_TYPE_WORKING_EF    0x01
#define FILE_TYPE_BSO           0x10
#define FILE_PERSISTENT         0x20
#define FILE_DATA_FLASH         0x40
#define FILE_DATA_FUNC          0x80

/* EF structures */
#define FILE_EF_UNKNOWN             0x00
#define FILE_EF_TRANSPARENT         0x01
#define FILE_EF_LINEAR_FIXED        0x02
#define FILE_EF_LINEAR_FIXED_TLV    0x03
#define FILE_EF_LINEAR_VARIABLE     0x04
#define FILE_EF_LINEAR_VARIABLE_TLV 0x05
#define FILE_EF_CYCLIC              0x06
#define FILE_EF_CYCLIC_TLV          0x07

#define ACL_OP_DELETE_SELF      0x00
#define ACL_OP_CREATE_DF        0x01
#define ACL_OP_CREATE_EF        0x02
#define ACL_OP_DELETE_CHILD     0x03
#define ACL_OP_WRITE            0x04
#define ACL_OP_UPDATE_ERASE     0x05
#define ACL_OP_READ_SEARCH      0x06

#define SPECIFY_EF 0x1
#define SPECIFY_DF 0x2
#define SPECIFY_ANY 0x3

#define EF_DKEK     0x108F
#define EF_PRKDFS   0x6040
#define EF_PUKDFS   0x6041
#define EF_CDFS     0x6042
#define EF_AODFS    0x6043
#define EF_DODFS    0x6044
#define EF_SKDFS    0x6045

#define MAX_DEPTH 4

typedef struct file
{
    const uint16_t fid;
    const uint8_t parent; //entry number in the whole table!!
    const uint8_t *name;
    const uint8_t type;
    const uint8_t ef_structure;
    uint8_t *data; //should include 2 bytes len at begining
    const uint8_t acl[7];
} __attribute__((packed)) file_t;

typedef struct file_chain
{
    file_t *file;
    struct file_chain *next;
} file_chain_t;

extern file_t *currentEF;
extern file_t *currentDF;
extern const file_t *selected_applet;

extern const file_t *MF;
extern const file_t *file_last;
extern const file_t *file_openpgp;
extern const file_t *file_sc_hsm;
extern bool card_terminated;
extern file_t *file_pin1;
extern file_t *file_retries_pin1;
extern file_t *file_sopin;
extern file_t *file_retries_sopin;

extern file_t *search_by_fid(const uint16_t fid, const file_t *parent, const uint8_t sp);
extern file_t *search_by_name(uint8_t *name, uint16_t namelen);
extern file_t *search_by_path(const uint8_t *pe_path, uint8_t pathlen, const file_t *parent);
extern bool authenticate_action(const file_t *ef, uint8_t op);
extern void process_fci(const file_t *pe);
extern void scan_flash();
extern void initialize_flash(bool);

extern file_t file_entries[];

extern uint8_t *file_read(const uint8_t *addr);
extern uint16_t file_read_uint16(const uint8_t *addr);
extern uint8_t file_read_uint8(const uint8_t *addr);
extern file_t *file_new(uint16_t);
file_t *get_parent(file_t *f);

extern uint16_t dynamic_files;
extern file_t dynamic_file[];
extern file_t *search_dynamic_file(uint16_t);
extern int delete_dynamic_file(file_t *f);

extern file_chain_t *add_file_to_chain(file_t *file, file_chain_t **chain);
extern file_t *search_file_chain(uint16_t fid, file_chain_t *chain);
extern bool isUserAuthenticated;

#endif