1 /* $NetBSD: df.c,v 1.7 2004/04/23 22:11:44 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)df.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: df.c,v 1.7 2004/04/23 22:11:44 christos Exp $"); 38 #endif /* not lint */ 39 40 /* 41 * Dial the DF02-AC or DF03-AC 42 */ 43 44 #include "tip.h" 45 46 static jmp_buf Sjbuf; 47 48 static int df_dialer __P((char *, char *, int)); 49 static void timeout __P((int)); 50 51 int 52 df02_dialer(num, acu) 53 char *num, *acu; 54 { 55 56 return (df_dialer(num, acu, 0)); 57 } 58 59 int 60 df03_dialer(num, acu) 61 char *num, *acu; 62 { 63 64 return (df_dialer(num, acu, 1)); 65 } 66 67 static int 68 df_dialer(num, acu, df03) 69 char *num, *acu; 70 int df03; 71 { 72 int f = FD; 73 struct termios cntrl; 74 int spd = 0; 75 char c = '\0'; 76 77 #if __GNUC__ /* XXX pacify gcc */ 78 (void)&spd; 79 #endif 80 81 tcgetattr(f, &cntrl); 82 cntrl.c_cflag |= HUPCL; 83 tcsetattr(f, TCSANOW, &cntrl); 84 if (setjmp(Sjbuf)) { 85 printf("connection timed out\r\n"); 86 df_disconnect(); 87 return (0); 88 } 89 if (boolean(value(VERBOSE))) 90 printf("\ndialing..."); 91 fflush(stdout); 92 #ifdef TIOCMSET 93 if (df03) { 94 int st = TIOCM_ST; /* secondary Transmit flag */ 95 96 tcgetattr(f, &cntrl); 97 spd = cfgetospeed(&cntrl); 98 if (spd != B1200) { /* must dial at 1200 baud */ 99 cfsetospeed(&cntrl, B1200); 100 cfsetispeed(&cntrl, B1200); 101 tcsetattr(f, TCSAFLUSH, &cntrl); 102 ioctl(f, TIOCMBIC, &st); /* clear ST for 300 baud */ 103 } else 104 ioctl(f, TIOCMBIS, &st); /* set ST for 1200 baud */ 105 } 106 #endif 107 signal(SIGALRM, timeout); 108 alarm(5 * strlen(num) + 10); 109 tcflush(f, TCIOFLUSH); 110 write(f, "\001", 1); 111 sleep(1); 112 write(f, "\002", 1); 113 write(f, num, strlen(num)); 114 read(f, &c, 1); 115 #ifdef TIOCMSET 116 if (df03 && spd != B1200) { 117 cfsetospeed(&cntrl, spd); 118 cfsetispeed(&cntrl, spd); 119 tcsetattr(f, TCSAFLUSH, &cntrl); 120 } 121 #endif 122 return (c == 'A'); 123 } 124 125 void 126 df_disconnect() 127 { 128 129 write(FD, "\001", 1); 130 sleep(1); 131 tcflush(FD, TCIOFLUSH); 132 } 133 134 135 void 136 df_abort() 137 { 138 139 df_disconnect(); 140 } 141 142 143 static void 144 timeout(dummy) 145 int dummy; 146 { 147 148 longjmp(Sjbuf, 1); 149 } 150