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