void multitech_disconnect () { int okay, retries; for (retries = okay = 0; retries < 3 && !okay; retries++) { /* first hang up the modem*/ ioctl (FD, TIOCCDTR, 0); acu_nap (escape_guard_time); ioctl (FD, TIOCSDTR, 0); acu_nap (escape_guard_time); /* * If not strapped for DTR control, try to get command mode. */ acu_nap (escape_guard_time); multitech_write_str (FD, escape_sequence); acu_nap (escape_guard_time); multitech_write_str (FD, hangup_command); okay = multitech_swallow ("\r\nOK\r\n"); } if (!okay) { #if ACULOG logent(value(HOST), "", "multitech", "can't hang up modem"); #endif if (boolean(value(VERBOSE))) printf("hang up failed\n"); } close (FD); }
/* * This convoluted piece of code attempts to get * the multitech in sync. */ static int multitechsync(void) { int already = 0; int len; char buf[40]; while (already++ < MAXRETRY) { acu_nap (intercommand_delay); ioctl (FD, TIOCFLUSH, 0); /* flush any clutter */ multitech_write_str (FD, reset_command); /* reset modem */ bzero(buf, sizeof(buf)); acu_nap (reset_delay); ioctl (FD, FIONREAD, &len); if (len) { len = read(FD, buf, sizeof(buf)); #ifdef DEBUG buf [len] = '\0'; printf("multitechsync: (\"%s\")\n\r", buf); #endif if (index(buf, '0') || (index(buf, 'O') && index(buf, 'K'))) return(1); } /* * If not strapped for DTR control, * try to get command mode. */ acu_nap (escape_guard_time); multitech_write_str (FD, escape_sequence); acu_nap (escape_guard_time); multitech_write_str (FD, hangup_command); /* * Toggle DTR to force anyone off that might have left * the modem connected. */ acu_nap (escape_guard_time); ioctl (FD, TIOCCDTR, 0); acu_nap (escape_guard_time); ioctl (FD, TIOCSDTR, 0); } acu_nap (intercommand_delay); multitech_write_str (FD, reset_command); return (0); }
int multitech_dialer (char *num, char *acu) { char *cp; #if ACULOG char line [80]; #endif if (lock_baud) { int i; if ((i = speed(number(value(BAUDRATE)))) == 0) return 0; ttysetup (i); } if (boolean(value(VERBOSE))) printf("Using \"%s\"\n", acu); acu_hupcl (); /* * Get in synch. */ if (!multitechsync()) { badsynch: printf("can't synchronize with multitech\n"); #if ACULOG logent(value(HOST), num, "multitech", "can't synch up"); #endif return (0); } acu_nap (intercommand_delay); multitech_write_str (FD, echo_off_command); /* turn off echoing */ sleep(1); #ifdef DEBUG if (boolean(value(VERBOSE))) multitech_verbose_read(); #endif acu_flush (); acu_nap (intercommand_delay); multitech_write_str (FD, init_string); if (!multitech_swallow ("\r\nOK\r\n")) goto badsynch; fflush (stdout); acu_nap (intercommand_delay); multitech_write_str (FD, dial_command); for (cp = num; *cp; cp++) if (*cp == '=') *cp = ','; multitech_write_str (FD, num); multitech_write_str (FD, "\r"); connected = multitech_connect(); #if ACULOG if (timeout) { sprintf(line, "%d second dial timeout", number(value(DIALTIMEOUT))); logent(value(HOST), num, "multitech", line); } #endif if (timeout) multitech_disconnect (); return (connected); }
void multitech_abort () { multitech_write_str (FD, "\r"); /* send anything to abort the call */ multitech_disconnect (); }