2 * Copyright (c) 1986, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static char sccsid[] = "@(#)courier.c 8.1 (Berkeley) 6/6/93";
39 * Routines for calling up on a Courier modem.
40 * Derived from Hayes driver.
47 static void sigALRM();
48 static int timeout = 0;
49 static int connected = 0;
50 static jmp_buf timeoutbuf, intbuf;
51 static int coursync();
61 static int cour_connect(), cour_swallow();
63 if (boolean(value(VERBOSE)))
64 printf("Using \"%s\"\n", acu);
66 ioctl(FD, TIOCHPCL, 0);
72 printf("can't synchronize with courier\n");
74 logent(value(HOST), num, "courier", "can't synch up");
78 cour_write(FD, "AT E0\r", 6); /* turn off echoing */
81 if (boolean(value(VERBOSE)))
84 ioctl(FD, TIOCFLUSH, 0); /* flush any clutter */
85 cour_write(FD, "AT C1 E0 H0 Q0 X6 V1\r", 21);
86 if (!cour_swallow("\r\nOK\r\n"))
89 cour_write(FD, "AT D", 4);
90 for (cp = num; *cp; cp++)
93 cour_write(FD, num, strlen(num));
94 cour_write(FD, "\r", 1);
95 connected = cour_connect();
98 sprintf(line, "%d second dial timeout",
99 number(value(DIALTIMEOUT)));
100 logent(value(HOST), num, "cour", line);
110 /* first hang up the modem*/
111 ioctl(FD, TIOCCDTR, 0);
113 ioctl(FD, TIOCSDTR, 0);
114 coursync(); /* reset */
120 cour_write(FD, "\r", 1); /* send anything to abort the call */
127 printf("\07timeout waiting for reply\n");
129 longjmp(timeoutbuf, 1);
134 register char *match;
139 f = signal(SIGALRM, sigALRM);
146 if (setjmp(timeoutbuf)) {
150 alarm(number(value(DIALTIMEOUT)));
155 if (boolean(value(VERBOSE)))
158 } while (c == *match++);
160 if (boolean(value(VERBOSE)))
163 signal(SIGALRM, SIG_DFL);
189 if (cour_swallow("\r\n") == 0)
191 f = signal(SIGALRM, sigALRM);
193 nc = 0; nl = sizeof(dialer_buf)-1;
194 bzero(dialer_buf, sizeof(dialer_buf));
196 for (nc = 0, nl = sizeof(dialer_buf)-1 ; nl > 0 ; nc++, nl--) {
197 if (setjmp(timeoutbuf))
199 alarm(number(value(DIALTIMEOUT)));
206 if (cour_swallow("\n") == 0)
210 if (strcmp(dialer_buf, "RINGING") == 0 &&
211 boolean(value(VERBOSE))) {
213 printf("%s\r\n", dialer_buf);
217 if (strncmp(dialer_buf, "CONNECT",
218 sizeof("CONNECT")-1) != 0)
220 for (bm = baud_msg ; bm->msg ; bm++)
222 dialer_buf+sizeof("CONNECT")-1) == 0) {
223 if (ioctl(FD, TIOCGETP, &sb) < 0) {
227 sb.sg_ispeed = sb.sg_ospeed = bm->baud;
228 if (ioctl(FD, TIOCSETP, &sb) < 0) {
234 if (boolean(value(VERBOSE)))
235 printf("%s\r\n", dialer_buf);
243 if (boolean(value(VERBOSE)))
248 printf("%s\r\n", dialer_buf);
255 * This convoluted piece of code attempts to get
256 * the courier in sync.
265 while (already++ < MAXRETRY) {
266 ioctl(FD, TIOCFLUSH, 0); /* flush any clutter */
267 cour_write(FD, "\rAT Z\r", 6); /* reset modem */
268 bzero(buf, sizeof(buf));
270 ioctl(FD, FIONREAD, &len);
272 len = read(FD, buf, sizeof(buf));
275 printf("coursync: (\"%s\")\n\r", buf);
277 if (index(buf, '0') ||
278 (index(buf, 'O') && index(buf, 'K')))
282 * If not strapped for DTR control,
283 * try to get command mode.
286 cour_write(FD, "+++", 3);
289 * Toggle DTR to force anyone off that might have left
290 * the modem connected.
292 ioctl(FD, TIOCCDTR, 0);
294 ioctl(FD, TIOCSDTR, 0);
296 cour_write(FD, "\rAT Z\r", 6);
300 cour_write(fd, cp, n)
307 if (boolean(value(VERBOSE)))
310 ioctl(fd, TIOCGETP, &sb);
311 ioctl(fd, TIOCSETP, &sb);
313 for ( ; n-- ; cp++) {
315 ioctl(fd, TIOCGETP, &sb);
316 ioctl(fd, TIOCSETP, &sb);
327 if (ioctl(FD, FIONREAD, &n) < 0)
331 if (read(FD, buf, n) != n)
338 * Code stolen from /usr/src/lib/libc/gen/sleep.c
340 #define mask(s) (1<<((s)-1))
341 #define setvec(vec, a) \
342 vec.sv_handler = a; vec.sv_mask = vec.sv_onstack = 0
344 static napms = 50; /* Give the courier 50 milliseconds between characters */
351 static void cour_napx();
353 struct itimerval itv, oitv;
354 register struct itimerval *itp = &itv;
355 struct sigvec vec, ovec;
357 timerclear(&itp->it_interval);
358 timerclear(&itp->it_value);
359 if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
361 setvec(ovec, SIG_DFL);
362 omask = sigblock(mask(SIGALRM));
363 itp->it_value.tv_sec = napms/1000;
364 itp->it_value.tv_usec = ((napms%1000)*1000);
365 setvec(vec, cour_napx);
367 (void) sigvec(SIGALRM, &vec, &ovec);
368 (void) setitimer(ITIMER_REAL, itp, (struct itimerval *)0);
370 sigpause(omask &~ mask(SIGALRM));
371 (void) sigvec(SIGALRM, &ovec, (struct sigvec *)0);
372 (void) setitimer(ITIMER_REAL, &oitv, (struct itimerval *)0);
373 (void) sigsetmask(omask);