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