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[] = "@(#)dn11.c 5.4 (Berkeley) 3/2/91"; 36 #endif /* not lint */ 37 38 /* 39 * Routines for dialing up on DN-11 40 */ 41 #include "tip.h" 42 43 int dn_abort(); 44 void alarmtr(); 45 static jmp_buf jmpbuf; 46 static int child = -1, dn; 47 48 dn_dialer(num, acu) 49 char *num, *acu; 50 { 51 extern errno; 52 char *p, *q, phone[40]; 53 int lt, nw, connected = 1; 54 register int timelim; 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 ioctl(dn, TIOCHPCL, 0); 99 signal(SIGALRM, SIG_DFL); 100 while ((nw = wait(<)) != child && nw != -1) 101 ; 102 fflush(stdout); 103 close(dn); 104 if (lt != 0) { 105 close(FD); 106 return (0); 107 } 108 return (1); 109 } 110 111 void 112 alarmtr() 113 { 114 alarm(0); 115 longjmp(jmpbuf, 1); 116 } 117 118 /* 119 * Insurance, for some reason we don't seem to be 120 * hanging up... 121 */ 122 dn_disconnect() 123 { 124 125 sleep(2); 126 if (FD > 0) 127 ioctl(FD, TIOCCDTR, 0); 128 close(FD); 129 } 130 131 dn_abort() 132 { 133 134 sleep(2); 135 if (child > 0) 136 kill(child, SIGKILL); 137 if (dn > 0) 138 close(dn); 139 if (FD > 0) 140 ioctl(FD, TIOCCDTR, 0); 141 close(FD); 142 } 143