2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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)
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
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
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 */
42 #define CALLBACK_BIT(n) ((n) < 0 ? 0 : 1 << (n))
45 int opmask; /* want these types of callback */
46 char msg[SCRIPT_LEN]; /* with this data (E.164) */
49 #define REJECTED(p, x) ((p)->his_reject & (1<<(x)))
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 */
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 */
78 u_int32_t his_reject; /* Request codes rejected by peer */
79 u_int32_t my_reject; /* Request codes I have rejected */
81 u_short auth_iwait; /* I must authenticate to the peer */
82 u_short auth_ineed; /* I require that the peer authenticates */
84 int LcpFailedMagic; /* Number of `magic is same' errors */
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 */
98 unsigned chap80nt : 2; /* Microsoft (NT) CHAP */
99 unsigned chap80lm : 2; /* Microsoft (LANMan) CHAP */
100 unsigned chap81 : 2; /* Microsoft CHAP v2 */
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 */
110 #define LCP_MAXCODE CODE_IDENT
111 #define LCP_MINMPCODE CODE_CODEREJ
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 */
134 #define fsm2lcp(fp) (fp->proto == PROTO_LCP ? (struct lcp *)fp : NULL)
136 extern void lcp_Init(struct lcp *, struct bundle *, struct link *,
137 const struct fsm_parent *);
138 extern void lcp_Setup(struct lcp *, int);
140 extern void lcp_SendProtoRej(struct lcp *, u_char *, int);
141 extern int lcp_SendIdentification(struct lcp *);
142 extern void lcp_RecvIdentification(struct lcp *, char *);
143 extern int lcp_ReportStatus(struct cmdargs const *);
144 extern struct mbuf *lcp_Input(struct bundle *, struct link *, struct mbuf *);
145 extern void lcp_SetupCallbacks(struct lcp *);