1 /* 2 * Copyright (c) 1983 The Regents of the University of California. 3 * 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 34 #ifndef lint 35 /*static char sccsid[] = "from: @(#)dn11.c 5.4 (Berkeley) 3/2/91";*/ 36 static char rcsid[] = "$Id: dn11.c,v 1.2 1993/08/01 18:06:58 mycroft Exp $"; 37 #endif /* not lint */ 38 39 /* 40 * Routines for dialing up on DN-11 41 */ 42 #include "tip.h" 43 44 int dn_abort(); 45 void alarmtr(); 46 static jmp_buf jmpbuf; 47 static int child = -1, dn; 48 49 dn_dialer(num, acu) 50 char *num, *acu; 51 { 52 extern errno; 53 char *p, *q, phone[40]; 54 int lt, nw, connected = 1; 55 register int timelim; 56 57 if (boolean(value(VERBOSE))) 58 printf("\nstarting call..."); 59 if ((dn = open(acu, 1)) < 0) { 60 if (errno == EBUSY) 61 printf("line busy..."); 62 else 63 printf("acu open error..."); 64 return (0); 65 } 66 if (setjmp(jmpbuf)) { 67 kill(child, SIGKILL); 68 close(dn); 69 return (0); 70 } 71 signal(SIGALRM, alarmtr); 72 timelim = 5 * strlen(num); 73 alarm(timelim < 30 ? 30 : timelim); 74 if ((child = fork()) == 0) { 75 /* 76 * ignore this stuff for aborts 77 */ 78 signal(SIGALRM, SIG_IGN); 79 signal(SIGINT, SIG_IGN); 80 signal(SIGQUIT, SIG_IGN); 81 sleep(2); 82 nw = write(dn, num, lt = strlen(num)); 83 exit(nw != lt); 84 } 85 /* 86 * open line - will return on carrier 87 */ 88 if ((FD = open(DV, 2)) < 0) { 89 if (errno == EIO) 90 printf("lost carrier..."); 91 else 92 printf("dialup line open failed..."); 93 alarm(0); 94 kill(child, SIGKILL); 95 close(dn); 96 return (0); 97 } 98 alarm(0); 99 ioctl(dn, TIOCHPCL, 0); 100 signal(SIGALRM, SIG_DFL); 101 while ((nw = wait(<)) != child && nw != -1) 102 ; 103 fflush(stdout); 104 close(dn); 105 if (lt != 0) { 106 close(FD); 107 return (0); 108 } 109 return (1); 110 } 111 112 void 113 alarmtr() 114 { 115 alarm(0); 116 longjmp(jmpbuf, 1); 117 } 118 119 /* 120 * Insurance, for some reason we don't seem to be 121 * hanging up... 122 */ 123 dn_disconnect() 124 { 125 126 sleep(2); 127 if (FD > 0) 128 ioctl(FD, TIOCCDTR, 0); 129 close(FD); 130 } 131 132 dn_abort() 133 { 134 135 sleep(2); 136 if (child > 0) 137 kill(child, SIGKILL); 138 if (dn > 0) 139 close(dn); 140 if (FD > 0) 141 ioctl(FD, TIOCCDTR, 0); 142 close(FD); 143 } 144