release/src/router/xl2tpd/aaa.h

   1 /*
   2  * Layer Two Tunnelling Protocol Daemon
   3  * Copyright (C) 1998 Adtran, Inc.
   4  * Copyright (C) 2002 Jeff McAdams
   5  *
   6  * Mark Spencer
   7  *
   8  * This software is distributed under the terms
   9  * of the GPL, which you should have received
  10  * along with this source.
  11  *
  12  * Authorization, Accounting, and Access control
  13  *
  14  */
  15
  16 #ifndef _AAA_H
  17 #define _AAA_H
  18 #include "md5.h"
  19
  20 #define ADDR_HASH_SIZE 256
  21 #define MD_SIG_SIZE 16
  22 #define MAX_VECTOR_SIZE 1024
  23 #define VECTOR_SIZE 16
  24
  25 #define STATE_NONE               0
  26 #define STATE_CHALLENGED 1
  27 #define STATE_COMPLETE   2
  28
  29 struct addr_ent
  30 {
  31     unsigned int addr;
  32     struct addr_ent *next;
  33 };
  34
  35 struct challenge
  36 {
  37     struct MD5Context md5;
  38     unsigned char ss;           /* State we're sending in */
  39     unsigned char secret[MAXSTRLEN];    /* The shared secret */
  40     unsigned char *challenge;       /* The original challenge */
  41     unsigned int chal_len;       /* The length of the original challenge */
  42     unsigned char response[MD_SIG_SIZE];        /* What we expect as a respsonse */
  43     unsigned char reply[MD_SIG_SIZE];   /* What the peer sent */
  44     unsigned char *vector;
  45     unsigned int vector_len;
  46     int state;                  /* What state is challenge in? */
  47 };
  48
  49 extern struct lns *get_lns (struct tunnel *);
  50 extern unsigned int get_addr (struct iprange *);
  51 extern void reserve_addr (unsigned int);
  52 extern void unreserve_addr (unsigned int);
  53 extern void init_addr ();
  54 extern int handle_challenge (struct tunnel *, struct challenge *);
  55 extern void mk_challenge (unsigned char *, int);
  56 #endif