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- /*
- * Copyright (c) 1983 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)dn11.c 5.4 (Berkeley) 3/2/91";
- #endif /* not lint */
-
- /*
- * Routines for dialing up on DN-11
- */
- #include "tip.h"
-
- int dn_abort();
- void alarmtr();
- static jmp_buf jmpbuf;
- static int child = -1, dn;
-
- dn_dialer(num, acu)
- char *num, *acu;
- {
- extern errno;
- char *p, *q, phone[40];
- int lt, nw, connected = 1;
- register int timelim;
-
- if (boolean(value(VERBOSE)))
- printf("\nstarting call...");
- if ((dn = open(acu, 1)) < 0) {
- if (errno == EBUSY)
- printf("line busy...");
- else
- printf("acu open error...");
- return (0);
- }
- if (setjmp(jmpbuf)) {
- kill(child, SIGKILL);
- close(dn);
- return (0);
- }
- signal(SIGALRM, alarmtr);
- timelim = 5 * strlen(num);
- alarm(timelim < 30 ? 30 : timelim);
- if ((child = fork()) == 0) {
- /*
- * ignore this stuff for aborts
- */
- signal(SIGALRM, SIG_IGN);
- signal(SIGINT, SIG_IGN);
- signal(SIGQUIT, SIG_IGN);
- sleep(2);
- nw = write(dn, num, lt = strlen(num));
- exit(nw != lt);
- }
- /*
- * open line - will return on carrier
- */
- if ((FD = open(DV, 2)) < 0) {
- if (errno == EIO)
- printf("lost carrier...");
- else
- printf("dialup line open failed...");
- alarm(0);
- kill(child, SIGKILL);
- close(dn);
- return (0);
- }
- alarm(0);
- ioctl(dn, TIOCHPCL, 0);
- signal(SIGALRM, SIG_DFL);
- while ((nw = wait(<)) != child && nw != -1)
- ;
- fflush(stdout);
- close(dn);
- if (lt != 0) {
- close(FD);
- return (0);
- }
- return (1);
- }
-
- void
- alarmtr()
- {
- alarm(0);
- longjmp(jmpbuf, 1);
- }
-
- /*
- * Insurance, for some reason we don't seem to be
- * hanging up...
- */
- dn_disconnect()
- {
-
- sleep(2);
- if (FD > 0)
- ioctl(FD, TIOCCDTR, 0);
- close(FD);
- }
-
- dn_abort()
- {
-
- sleep(2);
- if (child > 0)
- kill(child, SIGKILL);
- if (dn > 0)
- close(dn);
- if (FD > 0)
- ioctl(FD, TIOCCDTR, 0);
- close(FD);
- }
-