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/*
* Layer Two Tunnelling Protocol Daemon
* Copyright (C) 1998 Adtran, Inc.
* Copyright (C) 2002 Jeff McAdams
*
* Mark Spencer
*
* This software is distributed under the terms
* of the GPL, which you should have received
* along with this source.
*
* Authorization, Accounting, and Access control
*
*/
#ifndef _AAA_H
#define _AAA_H
#include "md5.h"
#define ADDR_HASH_SIZE 256
#define MD_SIG_SIZE 16
#define MAX_VECTOR_SIZE 1024
#define VECTOR_SIZE 16
#define STATE_NONE 0
#define STATE_CHALLENGED 1
#define STATE_COMPLETE 2
struct addr_ent
{
unsigned int addr;
struct addr_ent *next;
};
struct challenge
{
struct MD5Context md5;
unsigned char ss; /* State we're sending in */
unsigned char secret[MAXSTRLEN]; /* The shared secret */
unsigned char *challenge; /* The original challenge */
unsigned int chal_len; /* The length of the original challenge */
unsigned char response[MD_SIG_SIZE]; /* What we expect as a respsonse */
unsigned char reply[MD_SIG_SIZE]; /* What the peer sent */
unsigned char *vector;
unsigned int vector_len;
int state; /* What state is challenge in? */
};
extern struct lns *get_lns (struct tunnel *);
extern unsigned int get_addr (struct iprange *);
extern void reserve_addr (unsigned int);
extern void unreserve_addr (unsigned int);
extern void init_addr ();
extern int handle_challenge (struct tunnel *, struct challenge *);
extern void mk_challenge (unsigned char *, int);
#endif
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