root/webserver/example/freeRTOS/Demo/Common/ethernet/lwIP/netif/ppp/chap.h

Revision 14, 6.5 kB (checked in by phil, 15 years ago)

added unmodified FreeRTOS package V5.4.1 with only web srv demo source for LPC2368 for CrossWorks?

Line 
1 /*****************************************************************************
2 * chap.h - Network Challenge Handshake Authentication Protocol header file.
3 *
4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
5 * portions Copyright (c) 1998 Global Election Systems Inc.
6 *
7 * The authors hereby grant permission to use, copy, modify, distribute,
8 * and license this software and its documentation for any purpose, provided
9 * that existing copyright notices are retained in all copies and that this
10 * notice and the following disclaimer are included verbatim in any
11 * distributions. No written agreement, license, or royalty fee is required
12 * for any of the authorized uses.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 ******************************************************************************
26 * REVISION HISTORY
27 *
28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
29 *   Ported to lwIP.
30 * 97-12-03 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
31 *       Original built from BSD network code.
32 ******************************************************************************/
33 /*
34  * chap.h - Challenge Handshake Authentication Protocol definitions.
35  *
36  * Copyright (c) 1993 The Australian National University.
37  * All rights reserved.
38  *
39  * Redistribution and use in source and binary forms are permitted
40  * provided that the above copyright notice and this paragraph are
41  * duplicated in all such forms and that any documentation,
42  * advertising materials, and other materials related to such
43  * distribution and use acknowledge that the software was developed
44  * by the Australian National University.  The name of the University
45  * may not be used to endorse or promote products derived from this
46  * software without specific prior written permission.
47  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
48  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
49  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
50  *
51  * Copyright (c) 1991 Gregory M. Christy
52  * All rights reserved.
53  *
54  * Redistribution and use in source and binary forms are permitted
55  * provided that the above copyright notice and this paragraph are
56  * duplicated in all such forms and that any documentation,
57  * advertising materials, and other materials related to such
58  * distribution and use acknowledge that the software was developed
59  * by the author.
60  *
61  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
62  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
63  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
64  *
65  * $Id: chap.h,v 1.1 2003/05/27 14:37:56 jani Exp $
66  */
67
68 #ifndef CHAP_H
69 #define CHAP_H
70
71 /*************************
72 *** PUBLIC DEFINITIONS ***
73 *************************/
74
75 /* Code + ID + length */
76 #define CHAP_HEADERLEN          4
77
78 /*
79  * CHAP codes.
80  */
81
82 #define CHAP_DIGEST_MD5         5       /* use MD5 algorithm */
83 #define MD5_SIGNATURE_SIZE      16      /* 16 bytes in a MD5 message digest */
84 #define CHAP_MICROSOFT          0x80    /* use Microsoft-compatible alg. */
85 #define MS_CHAP_RESPONSE_LEN    49      /* Response length for MS-CHAP */
86
87 #define CHAP_CHALLENGE          1
88 #define CHAP_RESPONSE           2
89 #define CHAP_SUCCESS            3
90 #define CHAP_FAILURE            4
91
92 /*
93  *  Challenge lengths (for challenges we send) and other limits.
94  */
95 #define MIN_CHALLENGE_LENGTH    32
96 #define MAX_CHALLENGE_LENGTH    64
97 #define MAX_RESPONSE_LENGTH     64      /* sufficient for MD5 or MS-CHAP */
98
99 /*
100  * Client (peer) states.
101  */
102 #define CHAPCS_INITIAL          0       /* Lower layer down, not opened */
103 #define CHAPCS_CLOSED           1       /* Lower layer up, not opened */
104 #define CHAPCS_PENDING          2       /* Auth us to peer when lower up */
105 #define CHAPCS_LISTEN           3       /* Listening for a challenge */
106 #define CHAPCS_RESPONSE         4       /* Sent response, waiting for status */
107 #define CHAPCS_OPEN             5       /* We've received Success */
108
109 /*
110  * Server (authenticator) states.
111  */
112 #define CHAPSS_INITIAL          0       /* Lower layer down, not opened */
113 #define CHAPSS_CLOSED           1       /* Lower layer up, not opened */
114 #define CHAPSS_PENDING          2       /* Auth peer when lower up */
115 #define CHAPSS_INITIAL_CHAL     3       /* We've sent the first challenge */
116 #define CHAPSS_OPEN             4       /* We've sent a Success msg */
117 #define CHAPSS_RECHALLENGE      5       /* We've sent another challenge */
118 #define CHAPSS_BADAUTH          6       /* We've sent a Failure msg */
119
120 /************************
121 *** PUBLIC DATA TYPES ***
122 ************************/
123
124 /*
125  * Each interface is described by a chap structure.
126  */
127
128 typedef struct chap_state {
129     int unit;                   /* Interface unit number */
130     int clientstate;            /* Client state */
131     int serverstate;            /* Server state */
132     u_char challenge[MAX_CHALLENGE_LENGTH]; /* last challenge string sent */
133     u_char chal_len;            /* challenge length */
134     u_char chal_id;             /* ID of last challenge */
135     u_char chal_type;           /* hash algorithm for challenges */
136     u_char id;                  /* Current id */
137     char *chal_name;            /* Our name to use with challenge */
138     int chal_interval;          /* Time until we challenge peer again */
139     int timeouttime;            /* Timeout time in seconds */
140     int max_transmits;          /* Maximum # of challenge transmissions */
141     int chal_transmits;         /* Number of transmissions of challenge */
142     int resp_transmits;         /* Number of transmissions of response */
143     u_char response[MAX_RESPONSE_LENGTH];       /* Response to send */
144     u_char resp_length;         /* length of response */
145     u_char resp_id;             /* ID for response messages */
146     u_char resp_type;           /* hash algorithm for responses */
147     char *resp_name;            /* Our name to send with response */
148 } chap_state;
149
150
151 /******************
152 *** PUBLIC DATA ***
153 ******************/
154 extern chap_state chap[];
155
156 extern struct protent chap_protent;
157
158
159 /***********************
160 *** PUBLIC FUNCTIONS ***
161 ***********************/
162
163 void ChapAuthWithPeer (int, char *, int);
164 void ChapAuthPeer (int, char *, int);
165
166 #endif /* CHAP_H */
167
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