1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Routines for calling up on a Ventel Modem
* Define VENNOECHO if the Ventel is strapped for "no echo".
*/
#include "tip.h"
#define MAXRETRY 5
static int vensync(int);
static int gobble(char);
static void echo(char *);
static void sigALRM(void);
static int timeout = 0;
static sigjmp_buf timeoutbuf;
void ven_disconnect(void);
/* ARGSUSED */
int
ven_dialer(char *num, char *acu)
{
char *cp;
int connected = 0;
struct termios buf;
#ifdef ACULOG
char line[80];
#endif
/*
* Get in synch with a couple of carriage returns
*/
if (!vensync(FD)) {
(void) printf("can't synchronize with ventel\n");
#ifdef ACULOG
logent(value(HOST), num, "ventel", "can't synch up");
#endif
return (0);
}
if (boolean(value(VERBOSE)))
(void) printf("\ndialing...");
(void) fflush(stdout);
(void) ioctl(FD, TCGETS, &buf);
buf.c_cflag |= HUPCL;
(void) ioctl(FD, TCSETSF, &buf);
#ifdef VENNOECHO
echo("#k$\r$\n$D$I$A$L$:$ ");
for (cp = num; *cp; cp++) {
(void) sleep(1);
(void) write(FD, cp, 1);
}
echo("\r$\n");
#else
echo("k$\r$\n$D$I$A$L$:$ <");
for (cp = num; *cp; cp++) {
char c;
(void) sleep(1);
(void) write(FD, cp, 1);
(void) read(FD, &c, 1);
}
echo(">\r$\n");
#endif
if (gobble('\n'))
connected = gobble('!');
(void) ioctl(FD, TCFLSH, TCIOFLUSH);
#ifdef ACULOG
if (timeout) {
(void) sprintf(line, "%d second dial timeout",
number(value(DIALTIMEOUT)));
logent(value(HOST), num, "ventel", line);
}
#endif
if (timeout)
ven_disconnect(); /* insurance */
return (connected);
}
void
ven_disconnect(void)
{
(void) close(FD);
}
void
ven_abort(void)
{
(void) write(FD, "\03", 1);
(void) close(FD);
}
static void
echo(char *s)
{
char c;
while (c = *s++) {
switch (c) {
case '$':
(void) read(FD, &c, 1);
s++;
break;
case '#':
c = *s++;
(void) write(FD, &c, 1);
break;
default:
(void) write(FD, &c, 1);
(void) read(FD, &c, 1);
}
}
}
static void
sigALRM(void)
{
(void) printf("\07timeout waiting for reply\n");
timeout = 1;
siglongjmp(timeoutbuf, 1);
}
static int
gobble(char match)
{
char c;
sig_handler_t f;
f = signal(SIGALRM, (sig_handler_t)sigALRM);
timeout = 0;
do {
if (sigsetjmp(timeoutbuf, 1)) {
(void) signal(SIGALRM, f);
return (0);
}
(void) alarm(number(value(DIALTIMEOUT)));
(void) read(FD, &c, 1);
(void) alarm(0);
c &= 0177;
#ifdef notdef
if (boolean(value(VERBOSE)))
(void) putchar(c);
#endif
} while (c != '\n' && c != match);
(void) signal(SIGALRM, SIG_DFL);
return (c == match);
}
#define min(a, b) (((a) > (b)) ? (b) : (a))
/*
* This convoluted piece of code attempts to get
* the ventel in sync. If you don't have FIONREAD
* there are gory ways to simulate this.
*/
static int
vensync(int fd)
{
int already = 0, nread;
char buf[60];
int dtr = TIOCM_DTR;
/*
* Toggle DTR to force anyone off that might have left
* the modem connected, and insure a consistent state
* to start from.
*
* If you don't have the ioctl calls to diddle directly
* with DTR, you can always try setting the baud rate to 0.
*/
(void) ioctl(FD, TIOCMBIC, &dtr);
(void) sleep(2);
(void) ioctl(FD, TIOCMBIS, &dtr);
while (already < MAXRETRY) {
/*
* After reseting the modem, send it two \r's to
* autobaud on. Make sure to delay between them
* so the modem can frame the incoming characters.
*/
(void) write(fd, "\r", 1);
#ifdef VMUNIX
{
#include <sys/time.h>
struct timeval tv = {0, 500000};
(void) select(0, 0, 0, 0, &tv);
}
#else
(void) sleep(1);
#endif
(void) write(fd, "\r", 1);
(void) sleep(3);
if (ioctl(fd, FIONREAD, (caddr_t)&nread) < 0) {
perror("tip: ioctl");
continue;
}
while (nread > 0) {
(void) read(fd, buf, min(nread, 60));
if ((buf[nread - 1] & 0177) == '$')
return (1);
nread -= min(nread, 60);
}
(void) sleep(1);
already++;
}
return (0);
}
|
