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lwip/netif/ppp/chap.h@0:d7bd7384a37c, 2016-12-07 (annotated)

Committer:
grzemich
Date:
Wed Dec 07 23:47:50 2016 +0000
Revision:
0:d7bd7384a37c
dgd

Who changed what in which revision?

UserRevisionLine numberNew contents of line
grzemich 0:d7bd7384a37c 1 /*****************************************************************************
grzemich 0:d7bd7384a37c 2 * chap.h - Network Challenge Handshake Authentication Protocol header file.
grzemich 0:d7bd7384a37c 3 *
grzemich 0:d7bd7384a37c 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
grzemich 0:d7bd7384a37c 5 * portions Copyright (c) 1998 Global Election Systems Inc.
grzemich 0:d7bd7384a37c 6 *
grzemich 0:d7bd7384a37c 7 * The authors hereby grant permission to use, copy, modify, distribute,
grzemich 0:d7bd7384a37c 8 * and license this software and its documentation for any purpose, provided
grzemich 0:d7bd7384a37c 9 * that existing copyright notices are retained in all copies and that this
grzemich 0:d7bd7384a37c 10 * notice and the following disclaimer are included verbatim in any
grzemich 0:d7bd7384a37c 11 * distributions. No written agreement, license, or royalty fee is required
grzemich 0:d7bd7384a37c 12 * for any of the authorized uses.
grzemich 0:d7bd7384a37c 13 *
grzemich 0:d7bd7384a37c 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
grzemich 0:d7bd7384a37c 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
grzemich 0:d7bd7384a37c 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
grzemich 0:d7bd7384a37c 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
grzemich 0:d7bd7384a37c 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
grzemich 0:d7bd7384a37c 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
grzemich 0:d7bd7384a37c 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
grzemich 0:d7bd7384a37c 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
grzemich 0:d7bd7384a37c 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
grzemich 0:d7bd7384a37c 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
grzemich 0:d7bd7384a37c 24 *
grzemich 0:d7bd7384a37c 25 ******************************************************************************
grzemich 0:d7bd7384a37c 26 * REVISION HISTORY
grzemich 0:d7bd7384a37c 27 *
grzemich 0:d7bd7384a37c 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
grzemich 0:d7bd7384a37c 29 * Ported to lwIP.
grzemich 0:d7bd7384a37c 30 * 97-12-03 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
grzemich 0:d7bd7384a37c 31 * Original built from BSD network code.
grzemich 0:d7bd7384a37c 32 ******************************************************************************/
grzemich 0:d7bd7384a37c 33 /*
grzemich 0:d7bd7384a37c 34 * chap.h - Challenge Handshake Authentication Protocol definitions.
grzemich 0:d7bd7384a37c 35 *
grzemich 0:d7bd7384a37c 36 * Copyright (c) 1993 The Australian National University.
grzemich 0:d7bd7384a37c 37 * All rights reserved.
grzemich 0:d7bd7384a37c 38 *
grzemich 0:d7bd7384a37c 39 * Redistribution and use in source and binary forms are permitted
grzemich 0:d7bd7384a37c 40 * provided that the above copyright notice and this paragraph are
grzemich 0:d7bd7384a37c 41 * duplicated in all such forms and that any documentation,
grzemich 0:d7bd7384a37c 42 * advertising materials, and other materials related to such
grzemich 0:d7bd7384a37c 43 * distribution and use acknowledge that the software was developed
grzemich 0:d7bd7384a37c 44 * by the Australian National University. The name of the University
grzemich 0:d7bd7384a37c 45 * may not be used to endorse or promote products derived from this
grzemich 0:d7bd7384a37c 46 * software without specific prior written permission.
grzemich 0:d7bd7384a37c 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
grzemich 0:d7bd7384a37c 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
grzemich 0:d7bd7384a37c 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
grzemich 0:d7bd7384a37c 50 *
grzemich 0:d7bd7384a37c 51 * Copyright (c) 1991 Gregory M. Christy
grzemich 0:d7bd7384a37c 52 * All rights reserved.
grzemich 0:d7bd7384a37c 53 *
grzemich 0:d7bd7384a37c 54 * Redistribution and use in source and binary forms are permitted
grzemich 0:d7bd7384a37c 55 * provided that the above copyright notice and this paragraph are
grzemich 0:d7bd7384a37c 56 * duplicated in all such forms and that any documentation,
grzemich 0:d7bd7384a37c 57 * advertising materials, and other materials related to such
grzemich 0:d7bd7384a37c 58 * distribution and use acknowledge that the software was developed
grzemich 0:d7bd7384a37c 59 * by the author.
grzemich 0:d7bd7384a37c 60 *
grzemich 0:d7bd7384a37c 61 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
grzemich 0:d7bd7384a37c 62 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
grzemich 0:d7bd7384a37c 63 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
grzemich 0:d7bd7384a37c 64 *
grzemich 0:d7bd7384a37c 65 * $Id: chap.h,v 1.6 2010/01/24 13:19:34 goldsimon Exp $
grzemich 0:d7bd7384a37c 66 */
grzemich 0:d7bd7384a37c 67
grzemich 0:d7bd7384a37c 68 #ifndef CHAP_H
grzemich 0:d7bd7384a37c 69 #define CHAP_H
grzemich 0:d7bd7384a37c 70
grzemich 0:d7bd7384a37c 71 /* Code + ID + length */
grzemich 0:d7bd7384a37c 72 #define CHAP_HEADERLEN 4
grzemich 0:d7bd7384a37c 73
grzemich 0:d7bd7384a37c 74 /*
grzemich 0:d7bd7384a37c 75 * CHAP codes.
grzemich 0:d7bd7384a37c 76 */
grzemich 0:d7bd7384a37c 77
grzemich 0:d7bd7384a37c 78 #define CHAP_DIGEST_MD5 5 /* use MD5 algorithm */
grzemich 0:d7bd7384a37c 79 #define MD5_SIGNATURE_SIZE 16 /* 16 bytes in a MD5 message digest */
grzemich 0:d7bd7384a37c 80 #define CHAP_MICROSOFT 0x80 /* use Microsoft-compatible alg. */
grzemich 0:d7bd7384a37c 81 #define MS_CHAP_RESPONSE_LEN 49 /* Response length for MS-CHAP */
grzemich 0:d7bd7384a37c 82
grzemich 0:d7bd7384a37c 83 #define CHAP_CHALLENGE 1
grzemich 0:d7bd7384a37c 84 #define CHAP_RESPONSE 2
grzemich 0:d7bd7384a37c 85 #define CHAP_SUCCESS 3
grzemich 0:d7bd7384a37c 86 #define CHAP_FAILURE 4
grzemich 0:d7bd7384a37c 87
grzemich 0:d7bd7384a37c 88 /*
grzemich 0:d7bd7384a37c 89 * Challenge lengths (for challenges we send) and other limits.
grzemich 0:d7bd7384a37c 90 */
grzemich 0:d7bd7384a37c 91 #define MIN_CHALLENGE_LENGTH 32
grzemich 0:d7bd7384a37c 92 #define MAX_CHALLENGE_LENGTH 64
grzemich 0:d7bd7384a37c 93 #define MAX_RESPONSE_LENGTH 64 /* sufficient for MD5 or MS-CHAP */
grzemich 0:d7bd7384a37c 94
grzemich 0:d7bd7384a37c 95 /*
grzemich 0:d7bd7384a37c 96 * Each interface is described by a chap structure.
grzemich 0:d7bd7384a37c 97 */
grzemich 0:d7bd7384a37c 98
grzemich 0:d7bd7384a37c 99 typedef struct chap_state {
grzemich 0:d7bd7384a37c 100 int unit; /* Interface unit number */
grzemich 0:d7bd7384a37c 101 int clientstate; /* Client state */
grzemich 0:d7bd7384a37c 102 int serverstate; /* Server state */
grzemich 0:d7bd7384a37c 103 u_char challenge[MAX_CHALLENGE_LENGTH]; /* last challenge string sent */
grzemich 0:d7bd7384a37c 104 u_char chal_len; /* challenge length */
grzemich 0:d7bd7384a37c 105 u_char chal_id; /* ID of last challenge */
grzemich 0:d7bd7384a37c 106 u_char chal_type; /* hash algorithm for challenges */
grzemich 0:d7bd7384a37c 107 u_char id; /* Current id */
grzemich 0:d7bd7384a37c 108 char *chal_name; /* Our name to use with challenge */
grzemich 0:d7bd7384a37c 109 int chal_interval; /* Time until we challenge peer again */
grzemich 0:d7bd7384a37c 110 int timeouttime; /* Timeout time in seconds */
grzemich 0:d7bd7384a37c 111 int max_transmits; /* Maximum # of challenge transmissions */
grzemich 0:d7bd7384a37c 112 int chal_transmits; /* Number of transmissions of challenge */
grzemich 0:d7bd7384a37c 113 int resp_transmits; /* Number of transmissions of response */
grzemich 0:d7bd7384a37c 114 u_char response[MAX_RESPONSE_LENGTH]; /* Response to send */
grzemich 0:d7bd7384a37c 115 u_char resp_length; /* length of response */
grzemich 0:d7bd7384a37c 116 u_char resp_id; /* ID for response messages */
grzemich 0:d7bd7384a37c 117 u_char resp_type; /* hash algorithm for responses */
grzemich 0:d7bd7384a37c 118 char *resp_name; /* Our name to send with response */
grzemich 0:d7bd7384a37c 119 } chap_state;
grzemich 0:d7bd7384a37c 120
grzemich 0:d7bd7384a37c 121
grzemich 0:d7bd7384a37c 122 /*
grzemich 0:d7bd7384a37c 123 * Client (peer) states.
grzemich 0:d7bd7384a37c 124 */
grzemich 0:d7bd7384a37c 125 #define CHAPCS_INITIAL 0 /* Lower layer down, not opened */
grzemich 0:d7bd7384a37c 126 #define CHAPCS_CLOSED 1 /* Lower layer up, not opened */
grzemich 0:d7bd7384a37c 127 #define CHAPCS_PENDING 2 /* Auth us to peer when lower up */
grzemich 0:d7bd7384a37c 128 #define CHAPCS_LISTEN 3 /* Listening for a challenge */
grzemich 0:d7bd7384a37c 129 #define CHAPCS_RESPONSE 4 /* Sent response, waiting for status */
grzemich 0:d7bd7384a37c 130 #define CHAPCS_OPEN 5 /* We've received Success */
grzemich 0:d7bd7384a37c 131
grzemich 0:d7bd7384a37c 132 /*
grzemich 0:d7bd7384a37c 133 * Server (authenticator) states.
grzemich 0:d7bd7384a37c 134 */
grzemich 0:d7bd7384a37c 135 #define CHAPSS_INITIAL 0 /* Lower layer down, not opened */
grzemich 0:d7bd7384a37c 136 #define CHAPSS_CLOSED 1 /* Lower layer up, not opened */
grzemich 0:d7bd7384a37c 137 #define CHAPSS_PENDING 2 /* Auth peer when lower up */
grzemich 0:d7bd7384a37c 138 #define CHAPSS_INITIAL_CHAL 3 /* We've sent the first challenge */
grzemich 0:d7bd7384a37c 139 #define CHAPSS_OPEN 4 /* We've sent a Success msg */
grzemich 0:d7bd7384a37c 140 #define CHAPSS_RECHALLENGE 5 /* We've sent another challenge */
grzemich 0:d7bd7384a37c 141 #define CHAPSS_BADAUTH 6 /* We've sent a Failure msg */
grzemich 0:d7bd7384a37c 142
grzemich 0:d7bd7384a37c 143 extern chap_state chap[];
grzemich 0:d7bd7384a37c 144
grzemich 0:d7bd7384a37c 145 void ChapAuthWithPeer (int, char *, u_char);
grzemich 0:d7bd7384a37c 146 void ChapAuthPeer (int, char *, u_char);
grzemich 0:d7bd7384a37c 147
grzemich 0:d7bd7384a37c 148 extern struct protent chap_protent;
grzemich 0:d7bd7384a37c 149
grzemich 0:d7bd7384a37c 150 #endif /* CHAP_H */