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 34 #ifndef lint 35 static char sccsid[] = "@(#)dn11.c 8.1 (Berkeley) 6/6/93"; 36 #endif /* not lint */ 37 38 /* 39 * Routines for dialing up on DN-11 40 */ 41 #include "tipconf.h" 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); 99 100 #if HAVE_TERMIOS 101 { 102 struct termios term; 103 tcgetattr (dn, &term); 104 term.c_cflag |= HUPCL; 105 tcsetattr (dn, TCSANOW, &term); 106 } 107 #elif defined(TIOCHPCL) 108 ioctl(dn, TIOCHPCL, 0); 109 #endif 110 111 signal(SIGALRM, SIG_DFL); 112 while ((nw = wait(<)) != child && nw != -1) 113 ; 114 fflush(stdout); 115 close(dn); 116 if (lt != 0) { 117 close(FD); 118 return (0); 119 } 120 return (1); 121 } 122 123 void 124 alarmtr() 125 { 126 alarm(0); 127 longjmp(jmpbuf, 1); 128 } 129 130 /* 131 * Insurance, for some reason we don't seem to be 132 * hanging up... 133 */ 134 dn_disconnect() 135 { 136 137 sleep(2); 138 if (FD > 0) 139 ioctl(FD, TIOCCDTR, 0); 140 close(FD); 141 } 142 143 dn_abort() 144 { 145 146 sleep(2); 147 if (child > 0) 148 kill(child, SIGKILL); 149 if (dn > 0) 150 close(dn); 151 if (FD > 0) 152 ioctl(FD, TIOCCDTR, 0); 153 close(FD); 154 } 155