1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $FreeBSD$ 34 */ 35 36 #ifndef lint 37 static char sccsid[] = "@(#)dn11.c 8.1 (Berkeley) 6/6/93"; 38 #endif /* not lint */ 39 40 /* 41 * Routines for dialing up on DN-11 42 */ 43 #include "tipconf.h" 44 #include "tip.h" 45 #include <errno.h> 46 47 int dn_abort(); 48 void alarmtr(); 49 static jmp_buf jmpbuf; 50 static int child = -1, dn; 51 52 dn_dialer(num, acu) 53 char *num, *acu; 54 { 55 char *p, *q, phone[40]; 56 int lt, nw, connected = 1; 57 register int timelim; 58 59 if (boolean(value(VERBOSE))) 60 printf("\nstarting call..."); 61 if ((dn = open(acu, 1)) < 0) { 62 if (errno == EBUSY) 63 printf("line busy..."); 64 else 65 printf("acu open error..."); 66 return (0); 67 } 68 if (setjmp(jmpbuf)) { 69 kill(child, SIGKILL); 70 close(dn); 71 return (0); 72 } 73 signal(SIGALRM, alarmtr); 74 timelim = 5 * strlen(num); 75 alarm(timelim < 30 ? 30 : timelim); 76 if ((child = fork()) == 0) { 77 /* 78 * ignore this stuff for aborts 79 */ 80 signal(SIGALRM, SIG_IGN); 81 signal(SIGINT, SIG_IGN); 82 signal(SIGQUIT, SIG_IGN); 83 sleep(2); 84 nw = write(dn, num, lt = strlen(num)); 85 exit(nw != lt); 86 } 87 /* 88 * open line - will return on carrier 89 */ 90 if ((FD = open(DV, 2)) < 0) { 91 if (errno == EIO) 92 printf("lost carrier..."); 93 else 94 printf("dialup line open failed..."); 95 alarm(0); 96 kill(child, SIGKILL); 97 close(dn); 98 return (0); 99 } 100 alarm(0); 101 102 #if HAVE_TERMIOS 103 { 104 struct termios term; 105 tcgetattr (dn, &term); 106 term.c_cflag |= HUPCL; 107 tcsetattr (dn, TCSANOW, &term); 108 } 109 #elif defined(TIOCHPCL) 110 ioctl(dn, TIOCHPCL, 0); 111 #endif 112 113 signal(SIGALRM, SIG_DFL); 114 while ((nw = wait(<)) != child && nw != -1) 115 ; 116 fflush(stdout); 117 close(dn); 118 if (lt != 0) { 119 close(FD); 120 return (0); 121 } 122 return (1); 123 } 124 125 void 126 alarmtr() 127 { 128 alarm(0); 129 longjmp(jmpbuf, 1); 130 } 131 132 /* 133 * Insurance, for some reason we don't seem to be 134 * hanging up... 135 */ 136 dn_disconnect() 137 { 138 139 sleep(2); 140 if (FD > 0) 141 ioctl(FD, TIOCCDTR, 0); 142 close(FD); 143 } 144 145 dn_abort() 146 { 147 148 sleep(2); 149 if (child > 0) 150 kill(child, SIGKILL); 151 if (dn > 0) 152 close(dn); 153 if (FD > 0) 154 ioctl(FD, TIOCCDTR, 0); 155 close(FD); 156 } 157