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  */
62 typedef 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 
105 extern upap_state upap[];
106 
107 void upap_authwithpeer __P((int, char *, char *));
108 void upap_authpeer __P((int));
109 
110 extern struct protent pap_protent;
111