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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [Common/] [ethernet/] [lwIP/] [netif/] [ppp/] [chap.h] - Blame information for rev 606

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1 606 jeremybenn
/*****************************************************************************
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* chap.h - Network Challenge Handshake Authentication Protocol header file.
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*
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* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
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* portions Copyright (c) 1998 Global Election Systems Inc.
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice and the following disclaimer are included verbatim in any
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* distributions. No written agreement, license, or royalty fee is required
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* for any of the authorized uses.
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*
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* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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* REVISION HISTORY
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*
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* 03-01-01 Marc Boucher <marc@mbsi.ca>
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*   Ported to lwIP.
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* 97-12-03 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
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*       Original built from BSD network code.
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******************************************************************************/
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/*
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 * chap.h - Challenge Handshake Authentication Protocol definitions.
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 *
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 * Copyright (c) 1993 The Australian National University.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms are permitted
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 * provided that the above copyright notice and this paragraph are
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 * duplicated in all such forms and that any documentation,
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 * advertising materials, and other materials related to such
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 * distribution and use acknowledge that the software was developed
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 * by the Australian National University.  The name of the University
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 * may not be used to endorse or promote products derived from this
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 * software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 *
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 * Copyright (c) 1991 Gregory M. Christy
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms are permitted
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 * provided that the above copyright notice and this paragraph are
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 * duplicated in all such forms and that any documentation,
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 * advertising materials, and other materials related to such
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 * distribution and use acknowledge that the software was developed
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 * by the author.
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 *
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 *
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 * $Id: chap.h 2 2011-07-17 20:13:17Z filepang@gmail.com $
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 */
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#ifndef CHAP_H
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#define CHAP_H
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/*************************
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*** PUBLIC DEFINITIONS ***
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*************************/
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/* Code + ID + length */
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#define CHAP_HEADERLEN          4
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/*
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 * CHAP codes.
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 */
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#define CHAP_DIGEST_MD5         5       /* use MD5 algorithm */
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#define MD5_SIGNATURE_SIZE      16      /* 16 bytes in a MD5 message digest */
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#define CHAP_MICROSOFT          0x80    /* use Microsoft-compatible alg. */
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#define MS_CHAP_RESPONSE_LEN    49      /* Response length for MS-CHAP */
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#define CHAP_CHALLENGE          1
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#define CHAP_RESPONSE           2
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#define CHAP_SUCCESS            3
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#define CHAP_FAILURE            4
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/*
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 *  Challenge lengths (for challenges we send) and other limits.
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 */
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#define MIN_CHALLENGE_LENGTH    32
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#define MAX_CHALLENGE_LENGTH    64
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#define MAX_RESPONSE_LENGTH     64      /* sufficient for MD5 or MS-CHAP */
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/*
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 * Client (peer) states.
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 */
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#define CHAPCS_INITIAL          0        /* Lower layer down, not opened */
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#define CHAPCS_CLOSED           1       /* Lower layer up, not opened */
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#define CHAPCS_PENDING          2       /* Auth us to peer when lower up */
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#define CHAPCS_LISTEN           3       /* Listening for a challenge */
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#define CHAPCS_RESPONSE         4       /* Sent response, waiting for status */
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#define CHAPCS_OPEN             5       /* We've received Success */
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/*
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 * Server (authenticator) states.
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 */
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#define CHAPSS_INITIAL          0        /* Lower layer down, not opened */
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#define CHAPSS_CLOSED           1       /* Lower layer up, not opened */
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#define CHAPSS_PENDING          2       /* Auth peer when lower up */
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#define CHAPSS_INITIAL_CHAL     3       /* We've sent the first challenge */
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#define CHAPSS_OPEN             4       /* We've sent a Success msg */
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#define CHAPSS_RECHALLENGE      5       /* We've sent another challenge */
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#define CHAPSS_BADAUTH          6       /* We've sent a Failure msg */
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/************************
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*** PUBLIC DATA TYPES ***
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************************/
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/*
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 * Each interface is described by a chap structure.
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 */
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typedef struct chap_state {
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    int unit;                   /* Interface unit number */
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    int clientstate;            /* Client state */
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    int serverstate;            /* Server state */
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    u_char challenge[MAX_CHALLENGE_LENGTH]; /* last challenge string sent */
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    u_char chal_len;            /* challenge length */
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    u_char chal_id;             /* ID of last challenge */
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    u_char chal_type;           /* hash algorithm for challenges */
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    u_char id;                  /* Current id */
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    char *chal_name;            /* Our name to use with challenge */
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    int chal_interval;          /* Time until we challenge peer again */
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    int timeouttime;            /* Timeout time in seconds */
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    int max_transmits;          /* Maximum # of challenge transmissions */
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    int chal_transmits;         /* Number of transmissions of challenge */
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    int resp_transmits;         /* Number of transmissions of response */
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    u_char response[MAX_RESPONSE_LENGTH];       /* Response to send */
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    u_char resp_length;         /* length of response */
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    u_char resp_id;             /* ID for response messages */
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    u_char resp_type;           /* hash algorithm for responses */
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    char *resp_name;            /* Our name to send with response */
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} chap_state;
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/******************
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*** PUBLIC DATA ***
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******************/
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extern chap_state chap[];
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extern struct protent chap_protent;
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/***********************
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*** PUBLIC FUNCTIONS ***
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***********************/
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void ChapAuthWithPeer (int, char *, int);
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void ChapAuthPeer (int, char *, int);
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#endif /* CHAP_H */
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