1 /* $OpenBSD: df.c,v 1.9 2006/03/17 19:17:13 moritz Exp $ */ 2 /* $NetBSD: df.c,v 1.4 1995/10/29 00:49:51 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 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)df.c 8.1 (Berkeley) 6/6/93"; 41 static const char rcsid[] = "$OpenBSD: df.c,v 1.9 2006/03/17 19:17:13 moritz Exp $"; 42 #endif 43 #endif /* not lint */ 44 45 /* 46 * Dial the DF02-AC or DF03-AC 47 */ 48 49 #include "tip.h" 50 51 static jmp_buf Sjbuf; 52 53 static int df_dialer(char *, char *, int); 54 static void alrm_timeout(int); 55 56 int 57 df02_dialer(char *num, char *acu) 58 { 59 return (df_dialer(num, acu, 0)); 60 } 61 62 int 63 df03_dialer(char *num, char *acu) 64 { 65 return (df_dialer(num, acu, 1)); 66 } 67 68 static int 69 df_dialer(char *num, char *acu, int df03) 70 { 71 int f = FD; 72 struct termios cntrl; 73 int speed = 0; 74 char c = '\0'; 75 76 tcgetattr(f, &cntrl); 77 cntrl.c_cflag |= HUPCL; 78 tcsetattr(f, TCSANOW, &cntrl); 79 if (setjmp(Sjbuf)) { 80 printf("connection timed out\r\n"); 81 df_disconnect(); 82 return (0); 83 } 84 if (boolean(value(VERBOSE))) 85 printf("\ndialing..."); 86 fflush(stdout); 87 #ifdef TIOCMSET 88 if (df03) { 89 int st = TIOCM_ST; /* secondary Transmit flag */ 90 91 tcgetattr(f, &cntrl); 92 speed = cfgetospeed(&cntrl); 93 if (speed != B1200) { /* must dial at 1200 baud */ 94 cfsetospeed(&cntrl, B1200); 95 cfsetispeed(&cntrl, B1200); 96 tcsetattr(f, TCSAFLUSH, &cntrl); 97 ioctl(f, TIOCMBIC, &st); /* clear ST for 300 baud */ 98 } else 99 ioctl(f, TIOCMBIS, &st); /* set ST for 1200 baud */ 100 } 101 #endif 102 signal(SIGALRM, alrm_timeout); 103 alarm(5 * strlen(num) + 10); 104 tcflush(f, TCIOFLUSH); 105 write(f, "\001", 1); 106 sleep(1); 107 write(f, "\002", 1); 108 write(f, num, strlen(num)); 109 read(f, &c, 1); 110 #ifdef TIOCMSET 111 if (df03 && speed != B1200) { 112 cfsetospeed(&cntrl, speed); 113 cfsetispeed(&cntrl, speed); 114 tcsetattr(f, TCSAFLUSH, &cntrl); 115 } 116 #endif 117 return (c == 'A'); 118 } 119 120 void 121 df_disconnect(void) 122 { 123 write(FD, "\001", 1); 124 sleep(1); 125 tcflush(FD, TCIOFLUSH); 126 } 127 128 void 129 df_abort(void) 130 { 131 df_disconnect(); 132 } 133 134 /*ARGSUSED*/ 135 static void 136 alrm_timeout(int signo) 137 { 138 longjmp(Sjbuf, 1); 139 } 140