Remove __P macros from src/usr.bin and src/usr.sbin.
[dragonfly.git] / usr.sbin / pppd / chap.h
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1/*
2 * chap.h - Challenge Handshake Authentication Protocol definitions.
3 *
4 * Copyright (c) 1993 The Australian National University.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms are permitted
8 * provided that the above copyright notice and this paragraph are
9 * duplicated in all such forms and that any documentation,
10 * advertising materials, and other materials related to such
11 * distribution and use acknowledge that the software was developed
12 * by the Australian National University. The name of the University
13 * may not be used to endorse or promote products derived from this
14 * software without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
17 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18 *
19 * Copyright (c) 1991 Gregory M. Christy
20 * All rights reserved.
21 *
22 * Redistribution and use in source and binary forms are permitted
23 * provided that the above copyright notice and this paragraph are
24 * duplicated in all such forms and that any documentation,
25 * advertising materials, and other materials related to such
26 * distribution and use acknowledge that the software was developed
27 * by the author.
28 *
29 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
30 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
31 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
32 *
33 * $FreeBSD: src/usr.sbin/pppd/chap.h,v 1.7 1999/08/28 01:19:01 peter Exp $
2d8a3be7 34 * $DragonFly: src/usr.sbin/pppd/chap.h,v 1.3 2003/11/03 19:31:40 eirikn Exp $
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35 */
36
37#ifndef __CHAP_INCLUDE__
38
39/* Code + ID + length */
40#define CHAP_HEADERLEN 4
41
42/*
43 * CHAP codes.
44 */
45
46#define CHAP_DIGEST_MD5 5 /* use MD5 algorithm */
47#define MD5_SIGNATURE_SIZE 16 /* 16 bytes in a MD5 message digest */
48#define CHAP_MICROSOFT 0x80 /* use Microsoft-compatible alg. */
49#define MS_CHAP_RESPONSE_LEN 49 /* Response length for MS-CHAP */
50
51#define CHAP_CHALLENGE 1
52#define CHAP_RESPONSE 2
53#define CHAP_SUCCESS 3
54#define CHAP_FAILURE 4
55
56/*
57 * Challenge lengths (for challenges we send) and other limits.
58 */
59#define MIN_CHALLENGE_LENGTH 32
60#define MAX_CHALLENGE_LENGTH 64
61#define MAX_RESPONSE_LENGTH 64 /* sufficient for MD5 or MS-CHAP */
62
63/*
64 * Each interface is described by a chap structure.
65 */
66
67typedef struct chap_state {
68 int unit; /* Interface unit number */
69 int clientstate; /* Client state */
70 int serverstate; /* Server state */
71 u_char challenge[MAX_CHALLENGE_LENGTH]; /* last challenge string sent */
72 u_char chal_len; /* challenge length */
73 u_char chal_id; /* ID of last challenge */
74 u_char chal_type; /* hash algorithm for challenges */
75 u_char id; /* Current id */
76 char *chal_name; /* Our name to use with challenge */
77 int chal_interval; /* Time until we challenge peer again */
78 int timeouttime; /* Timeout time in seconds */
79 int max_transmits; /* Maximum # of challenge transmissions */
80 int chal_transmits; /* Number of transmissions of challenge */
81 int resp_transmits; /* Number of transmissions of response */
82 u_char response[MAX_RESPONSE_LENGTH]; /* Response to send */
83 u_char resp_length; /* length of response */
84 u_char resp_id; /* ID for response messages */
85 u_char resp_type; /* hash algorithm for responses */
86 char *resp_name; /* Our name to send with response */
87} chap_state;
88
89
90/*
91 * Client (peer) states.
92 */
93#define CHAPCS_INITIAL 0 /* Lower layer down, not opened */
94#define CHAPCS_CLOSED 1 /* Lower layer up, not opened */
95#define CHAPCS_PENDING 2 /* Auth us to peer when lower up */
96#define CHAPCS_LISTEN 3 /* Listening for a challenge */
97#define CHAPCS_RESPONSE 4 /* Sent response, waiting for status */
98#define CHAPCS_OPEN 5 /* We've received Success */
99
100/*
101 * Server (authenticator) states.
102 */
103#define CHAPSS_INITIAL 0 /* Lower layer down, not opened */
104#define CHAPSS_CLOSED 1 /* Lower layer up, not opened */
105#define CHAPSS_PENDING 2 /* Auth peer when lower up */
106#define CHAPSS_INITIAL_CHAL 3 /* We've sent the first challenge */
107#define CHAPSS_OPEN 4 /* We've sent a Success msg */
108#define CHAPSS_RECHALLENGE 5 /* We've sent another challenge */
109#define CHAPSS_BADAUTH 6 /* We've sent a Failure msg */
110
111/*
112 * Timeouts.
113 */
114#define CHAP_DEFTIMEOUT 3 /* Timeout time in seconds */
115#define CHAP_DEFTRANSMITS 10 /* max # times to send challenge */
116
117extern chap_state chap[];
118
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119void ChapAuthWithPeer(int, char *, int);
120void ChapAuthPeer(int, char *, int);
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121
122extern struct protent chap_protent;
123
124#define __CHAP_INCLUDE__
125#endif /* __CHAP_INCLUDE__ */