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 /* 36 * Dial the DF02-AC or DF03-AC 37 */ 38 39 #include "tip.h" 40 41 static jmp_buf Sjbuf; 42 43 static int df_dialer(char *, char *, int); 44 static void alrm_timeout(int); 45 46 int 47 df02_dialer(char *num, char *acu) 48 { 49 return (df_dialer(num, acu, 0)); 50 } 51 52 int 53 df03_dialer(char *num, char *acu) 54 { 55 return (df_dialer(num, acu, 1)); 56 } 57 58 static int 59 df_dialer(char *num, char *acu, int df03) 60 { 61 int f = FD; 62 struct termios cntrl; 63 int speed = 0; 64 char c = '\0'; 65 66 tcgetattr(f, &cntrl); 67 cntrl.c_cflag |= HUPCL; 68 tcsetattr(f, TCSANOW, &cntrl); 69 if (setjmp(Sjbuf)) { 70 printf("connection timed out\r\n"); 71 df_disconnect(); 72 return (0); 73 } 74 if (boolean(value(VERBOSE))) 75 printf("\ndialing..."); 76 fflush(stdout); 77 #ifdef TIOCMSET 78 if (df03) { 79 int st = TIOCM_ST; /* secondary Transmit flag */ 80 81 tcgetattr(f, &cntrl); 82 speed = cfgetospeed(&cntrl); 83 if (speed != B1200) { /* must dial at 1200 baud */ 84 cfsetospeed(&cntrl, B1200); 85 cfsetispeed(&cntrl, B1200); 86 tcsetattr(f, TCSAFLUSH, &cntrl); 87 ioctl(f, TIOCMBIC, &st); /* clear ST for 300 baud */ 88 } else 89 ioctl(f, TIOCMBIS, &st); /* set ST for 1200 baud */ 90 } 91 #endif 92 signal(SIGALRM, alrm_timeout); 93 alarm(5 * strlen(num) + 10); 94 tcflush(f, TCIOFLUSH); 95 write(f, "\001", 1); 96 sleep(1); 97 write(f, "\002", 1); 98 write(f, num, strlen(num)); 99 read(f, &c, 1); 100 #ifdef TIOCMSET 101 if (df03 && speed != B1200) { 102 cfsetospeed(&cntrl, speed); 103 cfsetispeed(&cntrl, speed); 104 tcsetattr(f, TCSAFLUSH, &cntrl); 105 } 106 #endif 107 return (c == 'A'); 108 } 109 110 void 111 df_disconnect(void) 112 { 113 write(FD, "\001", 1); 114 sleep(1); 115 tcflush(FD, TCIOFLUSH); 116 } 117 118 void 119 df_abort(void) 120 { 121 df_disconnect(); 122 } 123 124 /*ARGSUSED*/ 125 static void 126 alrm_timeout(int signo) 127 { 128 longjmp(Sjbuf, 1); 129 } 130