1/*
2 * upap.h - User/Password Authentication Protocol definitions.
3 *
4 * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in
15 *    the documentation and/or other materials provided with the
16 *    distribution.
17 *
18 * 3. The name "Carnegie Mellon University" must not be used to
19 *    endorse or promote products derived from this software without
20 *    prior written permission. For permission or any legal
21 *    details, please contact
22 *      Office of Technology Transfer
23 *      Carnegie Mellon University
24 *      5000 Forbes Avenue
25 *      Pittsburgh, PA  15213-3890
26 *      (412) 268-4387, fax: (412) 268-7395
27 *      tech-transfer@andrew.cmu.edu
28 *
29 * 4. Redistributions of any form whatsoever must retain the following
30 *    acknowledgment:
31 *    "This product includes software developed by Computing Services
32 *     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
33 *
34 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
35 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
36 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
37 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
38 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
39 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
40 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
41 *
42 * $Id: upap.h,v 1.8 2002/12/04 23:03:33 paulus Exp $
43 */
44
45/*
46 * Packet header = Code, id, length.
47 */
48#define UPAP_HEADERLEN	4
49
50
51/*
52 * UPAP codes.
53 */
54#define UPAP_AUTHREQ	1	/* Authenticate-Request */
55#define UPAP_AUTHACK	2	/* Authenticate-Ack */
56#define UPAP_AUTHNAK	3	/* Authenticate-Nak */
57
58
59/*
60 * Each interface is described by upap structure.
61 */
62typedef struct upap_state {
63    int us_unit;		/* Interface unit number */
64    char *us_user;		/* User */
65    int us_userlen;		/* User length */
66    char *us_passwd;		/* Password */
67    int us_passwdlen;		/* Password length */
68    int us_clientstate;		/* Client state */
69    int us_serverstate;		/* Server state */
70    u_char us_id;		/* Current id */
71    int us_timeouttime;		/* Timeout (seconds) for auth-req retrans. */
72    int us_transmits;		/* Number of auth-reqs sent */
73    int us_maxtransmits;	/* Maximum number of auth-reqs to send */
74    int us_reqtimeout;		/* Time to wait for auth-req from peer */
75} upap_state;
76
77
78/*
79 * Client states.
80 */
81#define UPAPCS_INITIAL	0	/* Connection down */
82#define UPAPCS_CLOSED	1	/* Connection up, haven't requested auth */
83#define UPAPCS_PENDING	2	/* Connection down, have requested auth */
84#define UPAPCS_AUTHREQ	3	/* We've sent an Authenticate-Request */
85#define UPAPCS_OPEN	4	/* We've received an Ack */
86#define UPAPCS_BADAUTH	5	/* We've received a Nak */
87
88/*
89 * Server states.
90 */
91#define UPAPSS_INITIAL	0	/* Connection down */
92#define UPAPSS_CLOSED	1	/* Connection up, haven't requested auth */
93#define UPAPSS_PENDING	2	/* Connection down, have requested auth */
94#define UPAPSS_LISTEN	3	/* Listening for an Authenticate */
95#define UPAPSS_OPEN	4	/* We've sent an Ack */
96#define UPAPSS_BADAUTH	5	/* We've sent a Nak */
97
98
99/*
100 * Timeouts.
101 */
102#define UPAP_DEFTIMEOUT	3	/* Timeout (seconds) for retransmitting req */
103#define UPAP_DEFREQTIME	30	/* Time to wait for auth-req from peer */
104
105extern upap_state upap[];
106
107void upap_authwithpeer __P((int, char *, char *));
108void upap_authpeer __P((int));
109
110extern struct protent pap_protent;
111