1 /* $OpenBSD: dn11.c,v 1.9 2006/03/17 19:17:13 moritz Exp $ */ 2 /* $NetBSD: dn11.c,v 1.4 1995/10/29 00:49:53 pk Exp $ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * Copyright (c) 1983, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)dn11.c 8.1 (Berkeley) 6/6/93"; 41 static const char rcsid[] = "$OpenBSD: dn11.c,v 1.9 2006/03/17 19:17:13 moritz Exp $"; 42 #endif 43 #endif /* not lint */ 44 45 /* 46 * Routines for dialing up on DN-11 47 */ 48 #include "tip.h" 49 50 static jmp_buf jmpbuf; 51 static pid_t child = -1, dn; 52 53 static void alarmtr(int); 54 55 int 56 dn_dialer(char *num, char *acu) 57 { 58 int lt, nw; 59 int timelim; 60 struct termios cntrl; 61 62 if (boolean(value(VERBOSE))) 63 printf("\nstarting call..."); 64 if ((dn = open(acu, 1)) < 0) { 65 if (errno == EBUSY) 66 printf("line busy..."); 67 else 68 printf("acu open error..."); 69 return (0); 70 } 71 if (setjmp(jmpbuf)) { 72 kill(child, SIGKILL); 73 close(dn); 74 return (0); 75 } 76 signal(SIGALRM, alarmtr); 77 timelim = 5 * strlen(num); 78 alarm(timelim < 30 ? 30 : timelim); 79 if ((child = fork()) == 0) { 80 /* 81 * ignore this stuff for aborts 82 */ 83 signal(SIGALRM, SIG_IGN); 84 signal(SIGINT, SIG_IGN); 85 signal(SIGQUIT, SIG_IGN); 86 sleep(2); 87 nw = write(dn, num, lt = strlen(num)); 88 exit(nw != lt); 89 } 90 /* 91 * open line - will return on carrier 92 */ 93 if ((FD = open(DV, 2)) < 0) { 94 if (errno == EIO) 95 printf("lost carrier..."); 96 else 97 printf("dialup line open failed..."); 98 alarm(0); 99 kill(child, SIGKILL); 100 close(dn); 101 return (0); 102 } 103 alarm(0); 104 tcgetattr(dn, &cntrl); 105 cntrl.c_cflag |= HUPCL; 106 tcsetattr(dn, TCSANOW, &cntrl); 107 signal(SIGALRM, SIG_DFL); 108 while ((nw = wait(<)) != child && nw != -1) 109 ; 110 fflush(stdout); 111 close(dn); 112 if (lt != 0) { 113 close(FD); 114 return (0); 115 } 116 return (1); 117 } 118 119 /*ARGSUSED*/ 120 static void 121 alarmtr(int signo) 122 { 123 alarm(0); 124 longjmp(jmpbuf, 1); 125 } 126 127 /* 128 * Insurance, for some reason we don't seem to be 129 * hanging up... 130 */ 131 void 132 dn_disconnect(void) 133 { 134 sleep(2); 135 if (FD > 0) 136 ioctl(FD, TIOCCDTR, 0); 137 close(FD); 138 } 139 140 void 141 dn_abort(void) 142 { 143 sleep(2); 144 if (child > 0) 145 kill(child, SIGKILL); 146 if (dn > 0) 147 close(dn); 148 if (FD > 0) 149 ioctl(FD, TIOCCDTR, 0); 150 close(FD); 151 } 152