1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org> 5 * based on work by Toshiharu OHNO <tony-o@iij.ad.jp> 6 * Internet Initiative Japan, Inc (IIJ) 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33/* callback::opmask values */ 34#define CALLBACK_AUTH (0) 35#define CALLBACK_DIALSTRING (1) /* Don't do this */ 36#define CALLBACK_LOCATION (2) /* Don't do this */ 37#define CALLBACK_E164 (3) 38#define CALLBACK_NAME (4) /* Don't do this */ 39#define CALLBACK_CBCP (6) 40#define CALLBACK_NONE (14) /* No callback is ok */ 41 42#define CALLBACK_BIT(n) ((n) < 0 ? 0 : 1 << (n)) 43 44struct callback { 45 int opmask; /* want these types of callback */ 46 char msg[SCRIPT_LEN]; /* with this data (E.164) */ 47}; 48 49#define REJECTED(p, x) ((p)->his_reject & (1<<(x))) 50 51struct lcp { 52 struct fsm fsm; /* The finite state machine */ 53 u_int16_t his_mru; /* Peers maximum packet size */ 54 u_int16_t his_mrru; /* Peers maximum reassembled packet size (MP) */ 55 u_int32_t his_accmap; /* Peeers async char control map */ 56 u_int32_t his_magic; /* Peers magic number */ 57 u_int32_t his_lqrperiod; /* Peers LQR frequency (100ths of seconds) */ 58 u_short his_auth; /* Peer wants this type of authentication */ 59 u_char his_authtype; /* Fifth octet of REQ/NAK/REJ */ 60 struct callback his_callback; /* Peer wants callback ? */ 61 unsigned his_shortseq : 1; /* Peer would like only 12bit seqs (MP) */ 62 unsigned his_protocomp : 1; /* Does peer do Protocol field compression */ 63 unsigned his_acfcomp : 1; /* Does peer do addr & cntrl fld compression */ 64 unsigned mru_req : 1; /* Has the peer requested an MRU */ 65 66 u_short want_mru; /* Our maximum packet size */ 67 u_short want_mrru; /* Our maximum reassembled packet size (MP) */ 68 u_int32_t want_accmap; /* Our async char control map */ 69 u_int32_t want_magic; /* Our magic number */ 70 u_int32_t want_lqrperiod; /* Our LQR frequency (100ths of seconds) */ 71 u_short want_auth; /* We want this type of authentication */ 72 u_char want_authtype; /* Fifth octet of REQ/NAK/REJ */ 73 struct callback want_callback;/* We want callback ? */ 74 unsigned want_shortseq : 1; /* I'd like only 12bit seqs (MP) */ 75 unsigned want_protocomp : 1; /* Do we do protocol field compression */ 76 unsigned want_acfcomp : 1; /* Do we do addr & cntrl fld compression */ 77 78 u_int32_t his_reject; /* Request codes rejected by peer */ 79 u_int32_t my_reject; /* Request codes I have rejected */ 80 81 u_short auth_iwait; /* I must authenticate to the peer */ 82 u_short auth_ineed; /* I require that the peer authenticates */ 83 84 int LcpFailedMagic; /* Number of `magic is same' errors */ 85 86 struct { 87 u_short mru; /* Preferred MRU value */ 88 u_short max_mru; /* Preferred MRU value */ 89 u_short mtu; /* Preferred MTU */ 90 u_short max_mtu; /* Preferred MTU */ 91 u_int32_t accmap; /* Initial ACCMAP value */ 92 int openmode; /* when to start CFG REQs */ 93 u_int32_t lqrperiod; /* LQR frequency (seconds) */ 94 struct fsm_retry fsm; /* How often/frequently to resend requests */ 95 unsigned acfcomp : 2; /* Address & Control Field Compression neg */ 96 unsigned chap05 : 2; /* Challenge Handshake Authentication proto */ 97#ifndef NODES 98 unsigned chap80nt : 2; /* Microsoft (NT) CHAP */ 99 unsigned chap80lm : 2; /* Microsoft (LANMan) CHAP */ 100 unsigned chap81 : 2; /* Microsoft CHAP v2 */ 101#endif 102 unsigned lqr : 2; /* Link Quality Report */ 103 unsigned echo : 1; /* Send echo Requests */ 104 unsigned pap : 2; /* Password Authentication protocol */ 105 unsigned protocomp : 2; /* Protocol field compression */ 106 char ident[DEF_MRU - 7]; /* SendIdentification() data */ 107 } cfg; 108}; 109 110#define LCP_MAXCODE CODE_IDENT 111#define LCP_MINMPCODE CODE_CODEREJ 112 113#define TY_MRU 1 /* Maximum-Receive-Unit */ 114#define TY_ACCMAP 2 /* Async-Control-Character-Map */ 115#define TY_AUTHPROTO 3 /* Authentication-Protocol */ 116#define TY_QUALPROTO 4 /* Quality-Protocol */ 117#define TY_MAGICNUM 5 /* Magic-Number */ 118#define TY_RESERVED 6 /* RESERVED */ 119#define TY_PROTOCOMP 7 /* Protocol-Field-Compression */ 120#define TY_ACFCOMP 8 /* Address-and-Control-Field-Compression */ 121#define TY_FCSALT 9 /* FCS-Alternatives */ 122#define TY_SDP 10 /* Self-Describing-Padding */ 123#define TY_CALLBACK 13 /* Callback */ 124#define TY_CFRAMES 15 /* Compound-frames */ 125#define TY_MRRU 17 /* Max Reconstructed Receive Unit (MP) */ 126#define TY_SHORTSEQ 18 /* Want short seqs (12bit) please (see mp.h) */ 127#define TY_ENDDISC 19 /* Endpoint discriminator */ 128 129struct mbuf; 130struct link; 131struct bundle; 132struct cmdargs; 133 134#define fsm2lcp(fp) (fp->proto == PROTO_LCP ? (struct lcp *)fp : NULL) 135 136extern void lcp_Init(struct lcp *, struct bundle *, struct link *, 137 const struct fsm_parent *); 138extern void lcp_Setup(struct lcp *, int); 139 140extern void lcp_SendProtoRej(struct lcp *, u_char *, int); 141extern int lcp_SendIdentification(struct lcp *); 142extern void lcp_RecvIdentification(struct lcp *, char *); 143extern int lcp_ReportStatus(struct cmdargs const *); 144extern struct mbuf *lcp_Input(struct bundle *, struct link *, struct mbuf *); 145extern void lcp_SetupCallbacks(struct lcp *); 146