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Annotation of embedaddon/libpdel/ppp/ppp_auth_chap.h, revision 1.1.1.1

1.1       misho       1: 
                      2: /*
                      3:  * Copyright (c) 2001-2002 Packet Design, LLC.
                      4:  * All rights reserved.
                      5:  * 
                      6:  * Subject to the following obligations and disclaimer of warranty,
                      7:  * use and redistribution of this software, in source or object code
                      8:  * forms, with or without modifications are expressly permitted by
                      9:  * Packet Design; provided, however, that:
                     10:  * 
                     11:  *    (i)  Any and all reproductions of the source or object code
                     12:  *         must include the copyright notice above and the following
                     13:  *         disclaimer of warranties; and
                     14:  *    (ii) No rights are granted, in any manner or form, to use
                     15:  *         Packet Design trademarks, including the mark "PACKET DESIGN"
                     16:  *         on advertising, endorsements, or otherwise except as such
                     17:  *         appears in the above copyright notice or in the software.
                     18:  * 
                     19:  * THIS SOFTWARE IS BEING PROVIDED BY PACKET DESIGN "AS IS", AND
                     20:  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, PACKET DESIGN MAKES NO
                     21:  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING
                     22:  * THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED
                     23:  * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
                     24:  * OR NON-INFRINGEMENT.  PACKET DESIGN DOES NOT WARRANT, GUARANTEE,
                     25:  * OR MAKE ANY REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS
                     26:  * OF THE USE OF THIS SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY,
                     27:  * RELIABILITY OR OTHERWISE.  IN NO EVENT SHALL PACKET DESIGN BE
                     28:  * LIABLE FOR ANY DAMAGES RESULTING FROM OR ARISING OUT OF ANY USE
                     29:  * OF THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY DIRECT,
                     30:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE, OR CONSEQUENTIAL
                     31:  * DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF
                     32:  * USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY THEORY OF
                     33:  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     34:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
                     35:  * THE USE OF THIS SOFTWARE, EVEN IF PACKET DESIGN IS ADVISED OF
                     36:  * THE POSSIBILITY OF SUCH DAMAGE.
                     37:  *
                     38:  * Author: Archie Cobbs <archie@freebsd.org>
                     39:  */
                     40: 
                     41: #ifndef _PDEL_PPP_PPP_AUTH_CHAP_H_
                     42: #define _PDEL_PPP_PPP_AUTH_CHAP_H_
                     43: 
                     44: struct ppp_log;
                     45: struct ppp_auth_cred_chap;
                     46: 
                     47: /*
                     48:  * CHAP function to set ID in credentials structure
                     49:  */
                     50: typedef void   ppp_auth_chap_set_id_t(struct ppp_auth_cred_chap *cred,
                     51:                        u_char id);
                     52: 
                     53: /*
                     54:  * CHAP hash function
                     55:  *
                     56:  * Should put the hash value into "cred", using the id and challenge
                     57:  * value in "cred" and the supplied secret.
                     58:  *
                     59:  * This function is for client code's use.
                     60:  */
                     61: typedef void   ppp_auth_chap_hash_t(struct ppp_auth_cred_chap *cred,
                     62:                        const void *secret, size_t slen);
                     63: 
                     64: /*
                     65:  * CHAP compare function
                     66:  *
                     67:  * Should compare the two hash values and return 1 if they
                     68:  * agree, otherwise zero.
                     69:  *
                     70:  * This function is for client code's use.
                     71:  */
                     72: typedef int    ppp_auth_chap_equal_t(struct ppp_auth_cred_chap *cred1,
                     73:                        struct ppp_auth_cred_chap *cred2);
                     74: 
                     75: /*
                     76:  * CHAP final function
                     77:  *
                     78:  * Handle any final action such as Microsoft ACK overloading in MS-CHAPv2.
                     79:  * This is called after recieving an ACK when we are authenticating
                     80:  * to the peer.
                     81:  */
                     82: typedef int    ppp_auth_chap_final_t(struct ppp_auth_cred_chap *cred,
                     83:                        struct ppp_log *log, int valid, const u_char *payload,
                     84:                        size_t len, const u_char *authresp);
                     85: 
                     86: /* CHAP type methods */
                     87: struct ppp_auth_chap_type {
                     88:        ppp_auth_chap_set_id_t  *set_id;        /* set 'id' in cred */
                     89:        ppp_auth_chap_hash_t    *hash;          /* hash method */
                     90:        ppp_auth_chap_equal_t   *equal;         /* compare method */
                     91:        ppp_auth_chap_final_t   *final;         /* final method */
                     92:        u_char                  cfixed;         /* fixed challenge length */
                     93:        u_int                   clen;           /* challenge length */
                     94:        u_int                   roff;           /* response offset */
                     95:        u_int                   rlen;           /* response length */
                     96: };
                     97: 
                     98: __BEGIN_DECLS
                     99: 
                    100: /* Supported CHAP types */
                    101: extern const struct ppp_auth_chap_type ppp_auth_chap_md5;
                    102: extern const struct ppp_auth_chap_type ppp_auth_chap_msv1;
                    103: extern const struct ppp_auth_chap_type ppp_auth_chap_msv2;
                    104: 
                    105: __END_DECLS
                    106: 
                    107: #ifdef _PDEL_PPP_PRIVATE_H_
                    108: 
                    109: /* MS-CHAP errors */
                    110: struct mschap_err {
                    111:        int             err;
                    112:        const char      *msg;
                    113: };
                    114: 
                    115: __BEGIN_DECLS
                    116: 
                    117: /* Auth type methods for CHAP */
                    118: extern ppp_authtype_start_t    ppp_auth_chap_start;
                    119: extern ppp_authtype_cancel_t   ppp_auth_chap_cancel;
                    120: extern ppp_authtype_input_t    ppp_auth_chap_input;
                    121: 
                    122: extern const struct mschap_err ppp_mschap_errs[];
                    123: 
                    124: __END_DECLS
                    125: 
                    126: #endif /* _PDEL_PPP_PRIVATE_H_ */
                    127: 
                    128: #endif /* _PDEL_PPP_PPP_AUTH_CHAP_H_ */