chap.h
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上传用户:luoyougen
上传日期:2008-05-12
资源大小:23136k
文件大小:4k
源码类别:
VxWorks
开发平台:
C/C++
- /* chap.h - Cryptographic Handshake Authentication Protocol header */
- /* Copyright 1995 Wind River Systems, Inc. */
- /*
- * Copyright (c) 1991 Gregory M. Christy
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the author.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
- /*
- modification history
- --------------------
- 01a,13jan95,dzb WRS-ize.
- */
- #ifndef __INCchaph
- #define __INCchaph
- #ifdef __cplusplus
- extern "C" {
- #endif
- /* Code + ID + length */
- #define CHAP_HEADERLEN 4
- /* CHAP codes */
- #define CHAP_DIGEST_MD5 5 /* use MD5 algorithm */
- #define MD5_SIGNATURE_SIZE 16 /* 16 bytes in a MD5 message digest */
- #define CHAP_CHALLENGE 1
- #define CHAP_RESPONSE 2
- #define CHAP_SUCCESS 3
- #define CHAP_FAILURE 4
- /*
- * Challenge lengths (for challenges we send) and other limits.
- */
- #define MIN_CHALLENGE_LENGTH 32
- #define MAX_CHALLENGE_LENGTH 64
- #define MAX_RESPONSE_LENGTH 16 /* sufficient for MD5 */
- /*
- * Each interface is described by a chap structure.
- */
- typedef struct chap_state {
- int unit; /* Interface unit number */
- int clientstate; /* Client state */
- int serverstate; /* Server state */
- u_char challenge[MAX_CHALLENGE_LENGTH]; /* last challenge string sent */
- u_char chal_len; /* challenge length */
- u_char chal_id; /* ID of last challenge */
- u_char chal_type; /* hash algorithm for challenges */
- u_char id; /* Current id */
- char *chal_name; /* Our name to use with challenge */
- int chal_interval; /* Time until we challenge peer again */
- int timeouttime; /* Timeout time in seconds */
- int max_transmits; /* Maximum # of challenge transmissions */
- int chal_transmits; /* Number of transmissions of challenge */
- int resp_transmits; /* Number of transmissions of response */
- u_char response[MAX_RESPONSE_LENGTH]; /* Response to send */
- u_char resp_length; /* length of response */
- u_char resp_id; /* ID for response messages */
- u_char resp_type; /* hash algorithm for responses */
- char *resp_name; /* Our name to send with response */
- } chap_state;
- /*
- * Client (peer) states.
- */
- #define CHAPCS_INITIAL 0 /* Lower layer down, not opened */
- #define CHAPCS_CLOSED 1 /* Lower layer up, not opened */
- #define CHAPCS_PENDING 2 /* Auth us to peer when lower up */
- #define CHAPCS_LISTEN 3 /* Listening for a challenge */
- #define CHAPCS_RESPONSE 4 /* Sent response, waiting for status */
- #define CHAPCS_OPEN 5 /* We've received Success */
- /*
- * Server (authenticator) states.
- */
- #define CHAPSS_INITIAL 0 /* Lower layer down, not opened */
- #define CHAPSS_CLOSED 1 /* Lower layer up, not opened */
- #define CHAPSS_PENDING 2 /* Auth peer when lower up */
- #define CHAPSS_INITIAL_CHAL 3 /* We've sent the first challenge */
- #define CHAPSS_OPEN 4 /* We've sent a Success msg */
- #define CHAPSS_RECHALLENGE 5 /* We've sent another challenge */
- #define CHAPSS_BADAUTH 6 /* We've sent a Failure msg */
- /*
- * Timeouts.
- */
- #define CHAP_DEFTIMEOUT 3 /* Timeout time in seconds */
- #define CHAP_DEFTRANSMITS 10 /* max # times to send challenge */
- extern void ChapInit __ARGS((int));
- extern void ChapAuthWithPeer __ARGS((int, char *, int));
- extern void ChapAuthPeer __ARGS((int, char *, int));
- extern void ChapLowerUp __ARGS((int));
- extern void ChapLowerDown __ARGS((int));
- extern void ChapInput __ARGS((int, u_char *, int));
- extern void ChapProtocolReject __ARGS((int));
- extern int ChapPrintPkt __ARGS((u_char *, int,
- void (*) __ARGS((void *, char *, ...)), void *));
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCchaph */