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#include <sys/param.h>
30
31#define CHAT_EXPECT 0
32#define CHAT_SEND   1
33#define CHAT_DONE   2
34#define CHAT_FAILED 3
35
36#define MAXABORTS   50
37
38struct physical;
39
40struct chat {
41  struct fdescriptor desc;
42  struct physical *physical;
43
44  int state;				/* Our CHAT_* status */
45
46  char script[LINE_LEN];		/* Our arg buffer */
47  char *argv[MAXARGS];			/* Our arguments (pointing to script) */
48  int argc;				/* Number of argv's */
49
50  int arg;				/* Our current arg number */
51  char exp[LINE_LEN];			/* Our translated current argument */
52  char *argptr;				/* Our current arg pointer */
53  int arglen;				/* The length of argptr */
54  char *nargptr;			/* Our next for expect-send-expect */
55
56  char buf[LINE_LEN*2];			/* Our input */
57  char *bufstart;			/* start of relevant data */
58  char *bufend;				/* end of relevant data */
59
60  int TimeoutSec;			/* Expect timeout value */
61  int TimedOut;				/* We timed out */
62
63  const char *phone;			/* Our phone number */
64
65  struct {
66    struct {
67      char *data;			/* Abort the dial if we get one */
68      int len;
69    } string[MAXABORTS];
70    int num;				/* How many AbortStrings */
71  } abort;
72
73  struct pppTimer pause;		/* Inactivity timer */
74  struct pppTimer timeout;		/* TimeoutSec timer */
75};
76
77#define descriptor2chat(d) \
78  ((d)->type == CHAT_DESCRIPTOR ? (struct chat *)(d) : NULL)
79#define	VECSIZE(v)	nitems(v)
80
81extern void chat_Init(struct chat *, struct physical *);
82extern int chat_Setup(struct chat *, const char *, const char *);
83extern void chat_Finish(struct chat *);
84extern void chat_Destroy(struct chat *);
85