1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #define DATALINK_CLOSED (0) 30 #define DATALINK_OPENING (1) 31 #define DATALINK_HANGUP (2) 32 #define DATALINK_DIAL (3) 33 #define DATALINK_CARRIER (4) 34 #define DATALINK_LOGOUT (5) 35 #define DATALINK_LOGIN (6) 36 #define DATALINK_READY (7) 37 #define DATALINK_LCP (8) 38 #define DATALINK_AUTH (9) 39 #define DATALINK_CBCP (10) 40 #define DATALINK_OPEN (11) 41 42 #define DATALINK_MAXNAME (20) /* Maximum datalink::name length */ 43 44 /* How to close the link */ 45 #define CLOSE_NORMAL 0 46 #define CLOSE_STAYDOWN 1 47 #define CLOSE_LCP 2 48 49 struct iovec; 50 struct prompt; 51 struct physical; 52 struct bundle; 53 54 struct datalink { 55 struct fdescriptor desc; /* We play either a physical or a chat */ 56 unsigned state; /* Our DATALINK_* state */ 57 struct physical *physical; /* Our link */ 58 59 struct chat chat; /* For bringing the link up & down */ 60 61 unsigned stayonline : 1; /* stay online when LCP is closed ? */ 62 struct { 63 unsigned run : 1; /* run scripts ? */ 64 unsigned packetmode : 1; /* Go into packet mode after login ? */ 65 } script; 66 67 struct { 68 struct { 69 char dial[SCRIPT_LEN]; 70 char login[SCRIPT_LEN]; 71 char logout[SCRIPT_LEN]; 72 char hangup[SCRIPT_LEN]; 73 } script; /* various chat scripts */ 74 struct { 75 char list[SCRIPT_LEN]; /* Telephone Numbers */ 76 } phone; 77 struct { 78 int max; /* initially try again this number of times */ 79 int next_timeout; /* Redial next timeout value */ 80 int inc; /* Increment timeout by `inc' each time read */ 81 int maxinc; /* Maximum number of increments */ 82 int timeout; /* Redial timeout value (end of phone list) */ 83 } dial; 84 struct { 85 int max; /* initially try again this number of times */ 86 int timeout; /* Timeout before reconnect on carrier loss */ 87 } reconnect; 88 struct callback callback; /* Direction depends on physical type */ 89 struct cbcpcfg cbcp; /* Direction depends on phys type & callback */ 90 } cfg; /* All our config data is in here */ 91 92 struct { 93 char list[SCRIPT_LEN]; /* copy of cfg.list for strsep() */ 94 char *next; /* Next phone from the list */ 95 char *alt; /* Alternate (after fail) phone from the list */ 96 const char *chosen; /* Chosen phone number after DIAL */ 97 } phone; 98 99 struct cbcp cbcp; 100 101 struct { 102 struct pppTimer timer; /* For timing between close & open */ 103 int tries; /* currently try again this number of times */ 104 int incs; /* # times our timeout has been incremented */ 105 } dial; 106 107 unsigned reconnect_tries; /* currently try again this number of times */ 108 109 char *name; /* Our name */ 110 111 struct peerid peer; /* Peer identification */ 112 113 struct fsm_parent fsmp; /* Our callback functions */ 114 const struct fsm_parent *parent; /* Our parent */ 115 116 struct authinfo pap; /* Authentication using pap */ 117 struct chap chap; /* Authentication using chap */ 118 119 struct mp_link mp; /* multilink data */ 120 121 struct bundle *bundle; /* for the moment */ 122 struct datalink *next; /* Next in the list */ 123 }; 124 125 #define descriptor2datalink(d) \ 126 ((d)->type == DATALINK_DESCRIPTOR ? (struct datalink *)(d) : NULL) 127 128 extern struct datalink *datalink_Create(const char *name, struct bundle *, int); 129 extern struct datalink *datalink_Clone(struct datalink *, const char *); 130 extern struct datalink *iov2datalink(struct bundle *, struct iovec *, int *, 131 int, int, int *, int *); 132 extern int datalink2iov(struct datalink *, struct iovec *, int *, int, int *, 133 int *); 134 extern struct datalink *datalink_Destroy(struct datalink *); 135 extern void datalink_GotAuthname(struct datalink *, const char *); 136 extern void datalink_Up(struct datalink *, int, int); 137 extern void datalink_Close(struct datalink *, int); 138 extern void datalink_Down(struct datalink *, int); 139 extern void datalink_StayDown(struct datalink *); 140 extern void datalink_DontHangup(struct datalink *); 141 extern void datalink_AuthOk(struct datalink *); 142 extern void datalink_AuthNotOk(struct datalink *); 143 extern void datalink_NCPUp(struct datalink *); 144 extern void datalink_CBCPComplete(struct datalink *); 145 extern void datalink_CBCPFailed(struct datalink *); 146 extern int datalink_Show(struct cmdargs const *); 147 extern int datalink_SetRedial(struct cmdargs const *); 148 extern int datalink_SetReconnect(struct cmdargs const *); 149 extern const char *datalink_State(struct datalink *); 150 extern void datalink_Rename(struct datalink *, const char *); 151 extern int datalink_RemoveFromSet(struct datalink *, fd_set *, fd_set *, 152 fd_set *); 153 extern int datalink_SetMode(struct datalink *, int); 154 extern int datalink_GetDialTimeout(struct datalink *); 155 extern const char *datalink_ChoosePhoneNumber(struct datalink *); 156 extern void datalink_ComeDown(struct datalink *, int); 157