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