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 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)dn11.c 8.1 (Berkeley) 6/6/93"; 39 static const char rcsid[] = "$OpenBSD: dn11.c,v 1.9 2006/03/17 19:17:13 moritz Exp $"; 40 #endif 41 #endif /* not lint */ 42 43 /* 44 * Routines for dialing up on DN-11 45 */ 46 #include "tip.h" 47 48 static jmp_buf jmpbuf; 49 static pid_t child = -1, dn; 50 51 static void alarmtr(int); 52 53 int 54 dn_dialer(char *num, char *acu) 55 { 56 int lt, nw; 57 int timelim; 58 struct termios cntrl; 59 60 if (boolean(value(VERBOSE))) 61 printf("\nstarting call..."); 62 if ((dn = open(acu, 1)) < 0) { 63 if (errno == EBUSY) 64 printf("line busy..."); 65 else 66 printf("acu open error..."); 67 return (0); 68 } 69 if (setjmp(jmpbuf)) { 70 kill(child, SIGKILL); 71 close(dn); 72 return (0); 73 } 74 signal(SIGALRM, alarmtr); 75 timelim = 5 * strlen(num); 76 alarm(timelim < 30 ? 30 : timelim); 77 if ((child = fork()) == 0) { 78 /* 79 * ignore this stuff for aborts 80 */ 81 signal(SIGALRM, SIG_IGN); 82 signal(SIGINT, SIG_IGN); 83 signal(SIGQUIT, SIG_IGN); 84 sleep(2); 85 nw = write(dn, num, lt = strlen(num)); 86 exit(nw != lt); 87 } 88 /* 89 * open line - will return on carrier 90 */ 91 if ((FD = open(DV, 2)) < 0) { 92 if (errno == EIO) 93 printf("lost carrier..."); 94 else 95 printf("dialup line open failed..."); 96 alarm(0); 97 kill(child, SIGKILL); 98 close(dn); 99 return (0); 100 } 101 alarm(0); 102 tcgetattr(dn, &cntrl); 103 cntrl.c_cflag |= HUPCL; 104 tcsetattr(dn, TCSANOW, &cntrl); 105 signal(SIGALRM, SIG_DFL); 106 while ((nw = wait(<)) != child && nw != -1) 107 ; 108 fflush(stdout); 109 close(dn); 110 if (lt != 0) { 111 close(FD); 112 return (0); 113 } 114 return (1); 115 } 116 117 /*ARGSUSED*/ 118 static void 119 alarmtr(int signo) 120 { 121 alarm(0); 122 longjmp(jmpbuf, 1); 123 } 124 125 /* 126 * Insurance, for some reason we don't seem to be 127 * hanging up... 128 */ 129 void 130 dn_disconnect(void) 131 { 132 sleep(2); 133 if (FD > 0) 134 ioctl(FD, TIOCCDTR, 0); 135 close(FD); 136 } 137 138 void 139 dn_abort(void) 140 { 141 sleep(2); 142 if (child > 0) 143 kill(child, SIGKILL); 144 if (dn > 0) 145 close(dn); 146 if (FD > 0) 147 ioctl(FD, TIOCCDTR, 0); 148 close(FD); 149 } 150