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upap.h
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 #include "ppp_opts.h"
46 #if PPP_SUPPORT && PAP_SUPPORT /* don't build if not configured for use in ppp_opts.h */
47 
48 #ifndef UPAP_H
49 #define UPAP_H
50 
51 #include "ppp.h"
52 
53 #ifdef __cplusplus
54 extern "C" {
55 #endif
56 
57 /*
58  * Packet header = Code, id, length.
59  */
60 #define UPAP_HEADERLEN 4
61 
62 
63 /*
64  * UPAP codes.
65  */
66 #define UPAP_AUTHREQ 1 /* Authenticate-Request */
67 #define UPAP_AUTHACK 2 /* Authenticate-Ack */
68 #define UPAP_AUTHNAK 3 /* Authenticate-Nak */
69 
70 
71 /*
72  * Client states.
73  */
74 #define UPAPCS_INITIAL 0 /* Connection down */
75 #define UPAPCS_CLOSED 1 /* Connection up, haven't requested auth */
76 #define UPAPCS_PENDING 2 /* Connection down, have requested auth */
77 #define UPAPCS_AUTHREQ 3 /* We've sent an Authenticate-Request */
78 #define UPAPCS_OPEN 4 /* We've received an Ack */
79 #define UPAPCS_BADAUTH 5 /* We've received a Nak */
80 
81 /*
82  * Server states.
83  */
84 #define UPAPSS_INITIAL 0 /* Connection down */
85 #define UPAPSS_CLOSED 1 /* Connection up, haven't requested auth */
86 #define UPAPSS_PENDING 2 /* Connection down, have requested auth */
87 #define UPAPSS_LISTEN 3 /* Listening for an Authenticate */
88 #define UPAPSS_OPEN 4 /* We've sent an Ack */
89 #define UPAPSS_BADAUTH 5 /* We've sent a Nak */
90 
91 
92 /*
93  * Timeouts.
94  */
95 #if 0 /* moved to ppp_opts.h */
96 #define UPAP_DEFTIMEOUT 3 /* Timeout (seconds) for retransmitting req */
97 #define UPAP_DEFREQTIME 30 /* Time to wait for auth-req from peer */
98 #endif /* moved to ppp_opts.h */
99 
100 /*
101  * Each interface is described by upap structure.
102  */
103 #if PAP_SUPPORT
104 typedef struct upap_state {
105  const char *us_user; /* User */
106  u8_t us_userlen; /* User length */
107  const char *us_passwd; /* Password */
108  u8_t us_passwdlen; /* Password length */
109  u8_t us_clientstate; /* Client state */
110 #if PPP_SERVER
111  u8_t us_serverstate; /* Server state */
112 #endif /* PPP_SERVER */
113  u8_t us_id; /* Current id */
114  u8_t us_transmits; /* Number of auth-reqs sent */
115 } upap_state;
116 #endif /* PAP_SUPPORT */
117 
118 
119 void upap_authwithpeer(ppp_pcb *pcb, const char *user, const char *password);
120 #if PPP_SERVER
121 void upap_authpeer(ppp_pcb *pcb);
122 #endif /* PPP_SERVER */
123 
124 extern const struct protent pap_protent;
125 
126 #ifdef __cplusplus
127 }
128 #endif
129 
130 #endif /* UPAP_H */
131 #endif /* PPP_SUPPORT && PAP_SUPPORT */
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