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33 * @(#)courier.c 8.1 (Berkeley) 6/6/93
37 * Routines for calling up on a Courier modem.
38 * Derived from Hayes driver.
42 #include "acucommon.h"
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);
73 printf("can't synchronize with courier\n");
75 logent(value(HOST), num, "courier", "can't synch up");
79 cour_write(FD, "AT E0\r", 6); /* turn off echoing */
82 if (boolean(value(VERBOSE)))
85 ioctl(FD, TIOCFLUSH, 0); /* flush any clutter */
86 cour_write(FD, "AT C1 E0 H0 Q0 X6 V1\r", 21);
87 if (!cour_swallow("\r\nOK\r\n"))
90 cour_write(FD, "AT D", 4);
91 for (cp = num; *cp; cp++)
94 cour_write(FD, num, strlen(num));
95 cour_write(FD, "\r", 1);
96 connected = cour_connect();
99 sprintf(line, "%d second dial timeout",
100 number(value(DIALTIMEOUT)));
101 logent(value(HOST), num, "cour", line);
111 /* first hang up the modem*/
112 ioctl(FD, TIOCCDTR, 0);
114 ioctl(FD, TIOCSDTR, 0);
115 coursync(); /* reset */
121 cour_write(FD, "\r", 1); /* send anything to abort the call */
128 printf("\07timeout waiting for reply\n");
130 longjmp(timeoutbuf, 1);
135 register char *match;
140 f = signal(SIGALRM, sigALRM);
147 if (setjmp(timeoutbuf)) {
151 alarm(number(value(DIALTIMEOUT)));
156 if (boolean(value(VERBOSE)))
159 } while (c == *match++);
161 if (boolean(value(VERBOSE)))
164 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 (!acu_setspeed(bm->baud))
227 if (boolean(value(VERBOSE)))
228 printf("%s\r\n", dialer_buf);
236 if (boolean(value(VERBOSE)))
241 printf("%s\r\n", dialer_buf);
248 * This convoluted piece of code attempts to get
249 * the courier in sync.
258 while (already++ < MAXRETRY) {
259 ioctl(FD, TIOCFLUSH, 0); /* flush any clutter */
260 cour_write(FD, "\rAT Z\r", 6); /* reset modem */
261 bzero(buf, sizeof(buf));
263 ioctl(FD, FIONREAD, &len);
265 len = read(FD, buf, sizeof(buf));
268 printf("coursync: (\"%s\")\n\r", buf);
270 if (index(buf, '0') ||
271 (index(buf, 'O') && index(buf, 'K')))
275 * If not strapped for DTR control,
276 * try to get command mode.
279 cour_write(FD, "+++", 3);
282 * Toggle DTR to force anyone off that might have left
283 * the modem connected.
285 ioctl(FD, TIOCCDTR, 0);
287 ioctl(FD, TIOCSDTR, 0);
289 cour_write(FD, "\rAT Z\r", 6);
293 cour_write(fd, cp, n)
299 if (boolean(value(VERBOSE)))
304 for ( ; n-- ; cp++) {
317 if (ioctl(FD, FIONREAD, &n) < 0)
321 if (read(FD, buf, n) != n)
332 /* end of courier.c */