1 /* $OpenBSD: dn11.c,v 1.5 2001/11/19 19:02:16 mpech Exp $ */ 2 /* $NetBSD: dn11.c,v 1.4 1995/10/29 00:49:53 pk Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)dn11.c 8.1 (Berkeley) 6/6/93"; 43 static char rcsid[] = "$OpenBSD: dn11.c,v 1.5 2001/11/19 19:02:16 mpech Exp $"; 44 #endif 45 #endif /* not lint */ 46 47 /* 48 * Routines for dialing up on DN-11 49 */ 50 #include "tip.h" 51 52 void dn_abort(); 53 void alarmtr(); 54 static jmp_buf jmpbuf; 55 static int child = -1, dn; 56 57 int 58 dn_dialer(num, acu) 59 char *num, *acu; 60 { 61 int lt, nw; 62 int timelim; 63 struct termios cntrl; 64 65 if (boolean(value(VERBOSE))) 66 printf("\nstarting call..."); 67 if ((dn = open(acu, 1)) < 0) { 68 if (errno == EBUSY) 69 printf("line busy..."); 70 else 71 printf("acu open error..."); 72 return (0); 73 } 74 if (setjmp(jmpbuf)) { 75 kill(child, SIGKILL); 76 close(dn); 77 return (0); 78 } 79 signal(SIGALRM, alarmtr); 80 timelim = 5 * strlen(num); 81 alarm(timelim < 30 ? 30 : timelim); 82 if ((child = fork()) == 0) { 83 /* 84 * ignore this stuff for aborts 85 */ 86 signal(SIGALRM, SIG_IGN); 87 signal(SIGINT, SIG_IGN); 88 signal(SIGQUIT, SIG_IGN); 89 sleep(2); 90 nw = write(dn, num, lt = strlen(num)); 91 exit(nw != lt); 92 } 93 /* 94 * open line - will return on carrier 95 */ 96 if ((FD = open(DV, 2)) < 0) { 97 if (errno == EIO) 98 printf("lost carrier..."); 99 else 100 printf("dialup line open failed..."); 101 alarm(0); 102 kill(child, SIGKILL); 103 close(dn); 104 return (0); 105 } 106 alarm(0); 107 tcgetattr(dn, &cntrl); 108 cntrl.c_cflag |= HUPCL; 109 tcsetattr(dn, TCSANOW, &cntrl); 110 signal(SIGALRM, SIG_DFL); 111 while ((nw = wait(<)) != child && nw != -1) 112 ; 113 fflush(stdout); 114 close(dn); 115 if (lt != 0) { 116 close(FD); 117 return (0); 118 } 119 return (1); 120 } 121 122 void 123 alarmtr() 124 { 125 alarm(0); 126 longjmp(jmpbuf, 1); 127 } 128 129 /* 130 * Insurance, for some reason we don't seem to be 131 * hanging up... 132 */ 133 void 134 dn_disconnect() 135 { 136 137 sleep(2); 138 if (FD > 0) 139 ioctl(FD, TIOCCDTR, 0); 140 close(FD); 141 } 142 143 void 144 dn_abort() 145 { 146 147 sleep(2); 148 if (child > 0) 149 kill(child, SIGKILL); 150 if (dn > 0) 151 close(dn); 152 if (FD > 0) 153 ioctl(FD, TIOCCDTR, 0); 154 close(FD); 155 } 156