165309e5cSBrian Somers /*- 2*4d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause 31de7b4b8SPedro F. Giffuni * 465309e5cSBrian Somers * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org> 565309e5cSBrian Somers * based on work by Toshiharu OHNO <tony-o@iij.ad.jp> 665309e5cSBrian Somers * Internet Initiative Japan, Inc (IIJ) 765309e5cSBrian Somers * All rights reserved. 8af57ed9fSAtsushi Murai * 965309e5cSBrian Somers * Redistribution and use in source and binary forms, with or without 1065309e5cSBrian Somers * modification, are permitted provided that the following conditions 1165309e5cSBrian Somers * are met: 1265309e5cSBrian Somers * 1. Redistributions of source code must retain the above copyright 1365309e5cSBrian Somers * notice, this list of conditions and the following disclaimer. 1465309e5cSBrian Somers * 2. Redistributions in binary form must reproduce the above copyright 1565309e5cSBrian Somers * notice, this list of conditions and the following disclaimer in the 1665309e5cSBrian Somers * documentation and/or other materials provided with the distribution. 17af57ed9fSAtsushi Murai * 1865309e5cSBrian Somers * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1965309e5cSBrian Somers * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2065309e5cSBrian Somers * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2165309e5cSBrian Somers * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2265309e5cSBrian Somers * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2365309e5cSBrian Somers * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2465309e5cSBrian Somers * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2565309e5cSBrian Somers * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2665309e5cSBrian Somers * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2765309e5cSBrian Somers * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2865309e5cSBrian Somers * SUCH DAMAGE. 29af57ed9fSAtsushi Murai */ 30af57ed9fSAtsushi Murai 312764b86aSBrian Somers struct mbuf; 3263b73463SBrian Somers struct physical; 3363b73463SBrian Somers 34af57ed9fSAtsushi Murai #define CHAP_CHALLENGE 1 35af57ed9fSAtsushi Murai #define CHAP_RESPONSE 2 36af57ed9fSAtsushi Murai #define CHAP_SUCCESS 3 37af57ed9fSAtsushi Murai #define CHAP_FAILURE 4 3875240ed1SBrian Somers 39e2ebb036SBrian Somers struct chap { 40f013f33eSBrian Somers struct fdescriptor desc; 4158330d7bSBrian Somers struct { 4258330d7bSBrian Somers pid_t pid; 4358330d7bSBrian Somers int fd; 4458330d7bSBrian Somers struct { 4558330d7bSBrian Somers char ptr[AUTHLEN * 2 + 3]; /* Allow for \r\n at the end (- NUL) */ 4658330d7bSBrian Somers int len; 4758330d7bSBrian Somers } buf; 4858330d7bSBrian Somers } child; 49e2ebb036SBrian Somers struct authinfo auth; 50a38cc901SBrian Somers struct { 51a38cc901SBrian Somers u_char local[CHAPCHALLENGELEN + AUTHLEN]; /* I invented this one */ 52a38cc901SBrian Somers u_char peer[CHAPCHALLENGELEN + AUTHLEN]; /* Peer gave us this one */ 53a38cc901SBrian Somers } challenge; 54fb11a9c2SBrian Somers #ifndef NODES 555e315498SBrian Somers unsigned NTRespSent : 1; /* Our last response */ 565e315498SBrian Somers int peertries; 57a8d604abSBrian Somers u_char authresponse[CHAPAUTHRESPONSELEN]; /* CHAP 81 response */ 58f522bee0SBrian Somers #endif 59e2ebb036SBrian Somers }; 606eaa6ac5SBrian Somers 6158330d7bSBrian Somers #define descriptor2chap(d) \ 6258330d7bSBrian Somers ((d)->type == CHAP_DESCRIPTOR ? (struct chap *)(d) : NULL) 63a8d604abSBrian Somers #define auth2chap(a) \ 6416e790daSJohn Birrell ((struct chap *)((char *)a - (uintptr_t)&((struct chap *)0)->auth)) 651ae349f5Scvs2svn 66250be50bSBrian Somers struct MSCHAPv2_resp { /* rfc2759 */ 67250be50bSBrian Somers char PeerChallenge[16]; 68250be50bSBrian Somers char Reserved[8]; 69250be50bSBrian Somers char NTResponse[24]; 70250be50bSBrian Somers char Flags; 71250be50bSBrian Somers }; 72250be50bSBrian Somers 73f0cdd9c0SBrian Somers extern void chap_Init(struct chap *, struct physical *); 7458330d7bSBrian Somers extern void chap_ReInit(struct chap *); 755d9e6103SBrian Somers extern struct mbuf *chap_Input(struct bundle *, struct link *, struct mbuf *); 76