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 /* 36 * Routines for dialing up on DN-11 37 */ 38 #include "tip.h" 39 40 static jmp_buf jmpbuf; 41 static pid_t child = -1, dn; 42 43 static void alarmtr(int); 44 45 int 46 dn_dialer(char *num, char *acu) 47 { 48 int lt, nw; 49 int timelim; 50 struct termios cntrl; 51 52 if (boolean(value(VERBOSE))) 53 printf("\nstarting call..."); 54 if ((dn = open(acu, 1)) < 0) { 55 if (errno == EBUSY) 56 printf("line busy..."); 57 else 58 printf("acu open error..."); 59 return (0); 60 } 61 if (setjmp(jmpbuf)) { 62 kill(child, SIGKILL); 63 close(dn); 64 return (0); 65 } 66 signal(SIGALRM, alarmtr); 67 timelim = 5 * strlen(num); 68 alarm(timelim < 30 ? 30 : timelim); 69 if ((child = fork()) == 0) { 70 /* 71 * ignore this stuff for aborts 72 */ 73 signal(SIGALRM, SIG_IGN); 74 signal(SIGINT, SIG_IGN); 75 signal(SIGQUIT, SIG_IGN); 76 sleep(2); 77 nw = write(dn, num, lt = strlen(num)); 78 exit(nw != lt); 79 } 80 /* 81 * open line - will return on carrier 82 */ 83 if ((FD = open(DV, 2)) < 0) { 84 if (errno == EIO) 85 printf("lost carrier..."); 86 else 87 printf("dialup line open failed..."); 88 alarm(0); 89 kill(child, SIGKILL); 90 close(dn); 91 return (0); 92 } 93 alarm(0); 94 tcgetattr(dn, &cntrl); 95 cntrl.c_cflag |= HUPCL; 96 tcsetattr(dn, TCSANOW, &cntrl); 97 signal(SIGALRM, SIG_DFL); 98 while ((nw = wait(<)) != child && nw != -1) 99 ; 100 fflush(stdout); 101 close(dn); 102 if (lt != 0) { 103 close(FD); 104 return (0); 105 } 106 return (1); 107 } 108 109 /*ARGSUSED*/ 110 static void 111 alarmtr(int signo) 112 { 113 alarm(0); 114 longjmp(jmpbuf, 1); 115 } 116 117 /* 118 * Insurance, for some reason we don't seem to be 119 * hanging up... 120 */ 121 void 122 dn_disconnect(void) 123 { 124 sleep(2); 125 if (FD > 0) 126 ioctl(FD, TIOCCDTR, 0); 127 close(FD); 128 } 129 130 void 131 dn_abort(void) 132 { 133 sleep(2); 134 if (child > 0) 135 kill(child, SIGKILL); 136 if (dn > 0) 137 close(dn); 138 if (FD > 0) 139 ioctl(FD, TIOCCDTR, 0); 140 close(FD); 141 } 142