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