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radlib_lib.h

/*-
 * Copyright 1998 Juniper Networks, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *    FreeBSD: src/lib/libradius/radlib_private.h,v 1.6 2004/04/27 15:00:29 
 *  NeTAMS: $Id: radlib_lib.h,v 1.1 2005-06-28 15:53:46 anton Exp $
 */

#ifndef RADLIB_PRIVATE_H
#define RADLIB_PRIVATE_H

#include <sys/types.h>
#include <netinet/in.h>

#include "radlib.h"
#include "radlib_vs.h"

/* Handle types */
#define RADIUS_AUTH           0   /* RADIUS authentication, default */
#define RADIUS_ACCT           1   /* RADIUS accounting */

/* Defaults */
#define MAXTRIES        3
#define PATH_RADIUS_CONF      "/etc/radius.conf"
#define RADIUS_PORT           1812
#define RADACCT_PORT          1813
#define TIMEOUT               3     /* In seconds */

/* Limits */
#define ERRSIZE         128         /* Maximum error message length */
#define MAXCONFLINE     1024        /* Maximum config file line length */
#define MAXSERVERS      10          /* Maximum number of servers to try */
#define MSGSIZE         4096        /* Maximum RADIUS message */
#define PASSSIZE  128         /* Maximum significant password chars */

/* Positions of fields in RADIUS messages */
#define POS_CODE  0           /* Message code */
#define POS_IDENT 1           /* Identifier */
#define POS_LENGTH      2           /* Message length */
#define POS_AUTH  4           /* Authenticator */
#define LEN_AUTH  16          /* Length of authenticator */
#define POS_ATTRS 20          /* Start of attributes */

struct rad_server {
      struct sockaddr_in addr;      /* Address of server */
      char        *secret;    /* Shared secret */
      int          timeout;   /* Timeout in seconds */
      int          max_tries; /* Number of tries before giving up */
      int          num_tries; /* Number of tries so far */
};

struct rad_handle {
      int          fd;        /* Socket file descriptor */
      struct rad_server servers[MAXSERVERS];    /* Servers to contact */
      int          num_servers;     /* Number of valid server entries */
      int          ident;           /* Current identifier value */
      char         errmsg[ERRSIZE]; /* Most recent error message */
      unsigned char      request[MSGSIZE];      /* Request to send */
      char         request_created; /* rad_create_request() called? */
      int          req_len;   /* Length of request */
      char         pass[PASSSIZE];  /* Cleartext password */
      int          pass_len;  /* Length of cleartext password */
      int          pass_pos;  /* Position of scrambled password */
      char         chap_pass; /* Have we got a CHAP_PASSWORD ? */
      int          authentic_pos;   /* Position of message authenticator */
      char         eap_msg;   /* Are we an EAP Proxy? */
      unsigned char      response[MSGSIZE];     /* Response received */
      int          resp_len;  /* Length of response */
      int          resp_pos;  /* Current position scanning attrs */
      int          total_tries;     /* How many requests we'll send */
      int          r_try;           /* How many requests we've sent */
      int          srv;       /* Server number we did last */
      int          type;            /* Handle type */
};

struct vendor_attribute {
      u_int32_t vendor_value;
      u_char attrib_type;
      u_char attrib_len;
      u_char attrib_data[1];
};

#endif

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