/* Blerg is (C) 2011 The Dominion of Awesome, and is distributed under a
 * BSD-style license.  Please see the COPYING file for details.
 */
#ifndef _AUTH_H
#define _AUTH_H

#include <stdint.h>

#define TOKEN_SIZE 16
#define MAX_PASSWORD_LENGTH 64
#define SCRYPT_SALT_SIZE 8
#define SCRYPT_OUTPUT_SIZE 32
#define SCRYPT_N 1<<14
#define SCRYPT_r 8
#define SCRYPT_p 1

struct auth_header {
	uint8_t version;
	uint8_t reserved1;
	uint16_t reserved2;
};

struct auth_v2 {
	struct auth_header header;
	uint8_t password[SCRYPT_OUTPUT_SIZE];
	uint8_t salt[SCRYPT_SALT_SIZE];
};

int auth_set_password(const char *username, const char *password);
int auth_check_password(const char *username, const char *password);
char * auth_login(const char *username, const char *password);
int auth_logout(const char *username, const char *token);
int auth_check_token(const char *username, const char *given_token);
int auth_get_counter(const char *username, uint32_t *counter);

#endif //_AUTH_H