/*********************************************************************************************************
* Software License Agreement (BSD License)                                                               *
* Author: Sebastien Decugis <sdecugis@nict.go.jp>							 *
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* Copyright (c) 2008, WIDE Project and NICT								 *
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/* This file contains the definitions needed by the radius_gw extension alone, not exported to sub-extensions. */
  
#ifndef _RADIUS_GW_INTERNAL_H
#define _RADIUS_GW_INTERNAL_H

/* This file extends definitions from the standard waaad API */
#define IN_EXTENSION
#define DEFINE_DEBUG_MACRO	radius_gw
#include <waaad/waaad.h>

/* include the general stuff */
#include "radius_gw.h"

/* Some headers that are useful in many files */
#include <string.h>
#include <stdlib.h>
#include <errno.h>

/* API definition of waaad */
extern waaad_api_t * waaad_api;
    
/* The RADIUS server(s) interface */
struct rgw_serv {
	unsigned	disabled	:1;
	unsigned	ip_disabled	:1;
	unsigned	ip6_disabled	:1;
	unsigned	:13; /* padding */
	
	uint16_t	port;	/* stored in network byte order */
	
	struct in_addr	ip_endpoint;
	struct in6_addr	ip6_endpoint;
};

extern struct rgw_servs {
	struct rgw_serv	auth_serv;
	struct rgw_serv	acct_serv;
} rgw_servers;

int rgw_servers_init(void);
int rgw_servers_start(void);
void rgw_servers_dump(void);
void rgw_servers_fini(void);


/* The clients allowed to connect to these servers */
int rgw_clients_init(void);
int rgw_clients_add( struct sockaddr * ip_port, unsigned char ** key, size_t keylen );
int rgw_clients_getkey(void * cli, unsigned char **key, size_t *key_len);
int rgw_clients_search(struct sockaddr * ip_port, void ** ref);
int rgw_clients_checkdup(rad_t **msg, void *cli);
void rgw_clients_dispose(void ** ref);
void rgw_clients_dump(void);
void rgw_clients_fini(void);


/* Functions related to RADIUS messages buffers on the network */
int rgw_msg_parse(unsigned char *buf, size_t len, rad_t **msg);
int rgw_msg_gen(rad_t *msg, unsigned char **buf, size_t *len);
int rgw_msg_send(rad_t * msg, void * cli);


/* The sub-extensions that provide functions to support RADIUS messages and attributes (see also radius_gw.h) */
#define RGW_EXT_PORT_AUTH	1
#define RGW_EXT_PORT_ACCT	2
int rgw_extensions_init(void);
int rgw_extensions_add( char * extfile, char * conffile, int port, unsigned char ** codes_array, size_t codes_sz );
void rgw_extensions_dump(void);
void rgw_extensions_start_cache(void);
int rgw_extensions_loop_req(rad_t **rad, sess_id_t **session, msg_t **diam_msg, void * cli);
void rgw_extensions_fini(void);

/* The function to parse the configuration file */
int rgw_conf_handle(char * conffile);


/* Worker module that handle incoming RADIUS messages */
int rgw_work_start(void);
int rgw_work_add(rad_t * msg, void * client);
void rgw_work_fini(void);


/* Verbosity level for debug */
extern int radius_gw_verbosity;


#endif /* _RADIUS_GW_INTERNAL_H */