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/*
* Copyright (C) 2014-2019 Yubico AB - See COPYING
*/
#ifndef UTIL_H
#define UTIL_H
#include <stdio.h>
#include <security/pam_appl.h>
#include "cfg.h"
#define BUFSIZE 1024
#define MAX_DEVS 24
#define DEFAULT_AUTHFILE_DIR_VAR "XDG_CONFIG_HOME"
#define DEFAULT_AUTHFILE "Yubico/u2f_keys"
#define DEFAULT_AUTHFILE_SSH "id_ecdsa_sk"
#define DEFAULT_AUTHFILE_DIR ".config"
#define DEFAULT_AUTHFILE_DIR_SSH ".ssh"
#define DEFAULT_AUTHPENDING_FILE_PATH "/var/run/user/%d/pam-u2f-authpending"
#define DEFAULT_PROMPT "Insert your FIDO authenticator, then press ENTER."
#define DEFAULT_CUE "Please touch the FIDO authenticator."
#define DEFAULT_ORIGIN_PREFIX "pam://"
#define SSH_ORIGIN "ssh:"
#define DEVLIST_LEN 64
typedef struct {
char *publicKey;
char *keyHandle;
char *coseType;
char *attributes;
int old_format;
} device_t;
int get_devices_from_authfile(const cfg_t *cfg, const char *username,
device_t *devices, unsigned *n_devs);
void free_devices(device_t *devices, const unsigned n_devs);
int do_authentication(const cfg_t *cfg, const device_t *devices,
const unsigned n_devs, pam_handle_t *pamh);
int do_manual_authentication(const cfg_t *cfg, const device_t *devices,
const unsigned n_devs, pam_handle_t *pamh);
char *converse(pam_handle_t *pamh, int echocode, const char *prompt);
int random_bytes(void *, size_t);
int cose_type(const char *, int *);
const char *cose_string(int);
char *expand_variables(const char *, const char *);
#if !defined(HAVE_EXPLICIT_BZERO)
void explicit_bzero(void *, size_t);
#endif
#endif /* UTIL_H */
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