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biz22.c revision 1.3 
      1 /*	$NetBSD: biz22.c,v 1.3 1994/12/08 09:31:31 jtc 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "@(#)biz22.c	8.1 (Berkeley) 6/6/93";
     39 #endif
     40 static char rcsid[] = "$NetBSD: biz22.c,v 1.3 1994/12/08 09:31:31 jtc Exp $";
     41 #endif /* not lint */
     42 
     43 #include "tip.h"
     44 
     45 #define DISCONNECT_CMD	"\20\04"	/* disconnection string */
     46 
     47 static	void sigALRM();
     48 static	int timeout = 0;
     49 static	jmp_buf timeoutbuf;
     50 
     51 /*
     52  * Dial up on a BIZCOMP Model 1022 with either
     53  * 	tone dialing (mod = "V")
     54  *	pulse dialing (mod = "W")
     55  */
     56 static int
     57 biz_dialer(num, mod)
     58 	char *num, *mod;
     59 {
     60 	register int connected = 0;
     61 	char cbuf[40];
     62 	static int cmd(), detect();
     63 
     64 	if (boolean(value(VERBOSE)))
     65 		printf("\nstarting call...");
     66 	/*
     67 	 * Disable auto-answer and configure for tone/pulse
     68 	 *  dialing
     69 	 */
     70 	if (cmd("\02K\r")) {
     71 		printf("can't initialize bizcomp...");
     72 		return (0);
     73 	}
     74 	strcpy(cbuf, "\02.\r");
     75 	cbuf[1] = *mod;
     76 	if (cmd(cbuf)) {
     77 		printf("can't set dialing mode...");
     78 		return (0);
     79 	}
     80 	strcpy(cbuf, "\02D");
     81 	strcat(cbuf, num);
     82 	strcat(cbuf, "\r");
     83 	write(FD, cbuf, strlen(cbuf));
     84 	if (!detect("7\r")) {
     85 		printf("can't get dial tone...");
     86 		return (0);
     87 	}
     88 	if (boolean(value(VERBOSE)))
     89 		printf("ringing...");
     90 	/*
     91 	 * The reply from the BIZCOMP should be:
     92 	 *	2 \r or 7 \r	failure
     93 	 *	1 \r		success
     94 	 */
     95 	connected = detect("1\r");
     96 #ifdef ACULOG
     97 	if (timeout) {
     98 		char line[80];
     99 
    100 		sprintf(line, "%d second dial timeout",
    101 			number(value(DIALTIMEOUT)));
    102 		logent(value(HOST), num, "biz1022", line);
    103 	}
    104 #endif
    105 	if (timeout)
    106 		biz22_disconnect();	/* insurance */
    107 	return (connected);
    108 }
    109 
    110 biz22w_dialer(num, acu)
    111 	char *num, *acu;
    112 {
    113 
    114 	return (biz_dialer(num, "W"));
    115 }
    116 
    117 biz22f_dialer(num, acu)
    118 	char *num, *acu;
    119 {
    120 
    121 	return (biz_dialer(num, "V"));
    122 }
    123 
    124 biz22_disconnect()
    125 {
    126 	int rw = 2;
    127 
    128 	write(FD, DISCONNECT_CMD, 4);
    129 	sleep(2);
    130 	ioctl(FD, TIOCFLUSH, &rw);
    131 }
    132 
    133 biz22_abort()
    134 {
    135 
    136 	write(FD, "\02", 1);
    137 }
    138 
    139 static void
    140 sigALRM()
    141 {
    142 
    143 	timeout = 1;
    144 	longjmp(timeoutbuf, 1);
    145 }
    146 
    147 static int
    148 cmd(s)
    149 	register char *s;
    150 {
    151 	sig_t f;
    152 	char c;
    153 
    154 	write(FD, s, strlen(s));
    155 	f = signal(SIGALRM, sigALRM);
    156 	if (setjmp(timeoutbuf)) {
    157 		biz22_abort();
    158 		signal(SIGALRM, f);
    159 		return (1);
    160 	}
    161 	alarm(number(value(DIALTIMEOUT)));
    162 	read(FD, &c, 1);
    163 	alarm(0);
    164 	signal(SIGALRM, f);
    165 	c &= 0177;
    166 	return (c != '\r');
    167 }
    168 
    169 static int
    170 detect(s)
    171 	register char *s;
    172 {
    173 	sig_t f;
    174 	char c;
    175 
    176 	f = signal(SIGALRM, sigALRM);
    177 	timeout = 0;
    178 	while (*s) {
    179 		if (setjmp(timeoutbuf)) {
    180 			biz22_abort();
    181 			break;
    182 		}
    183 		alarm(number(value(DIALTIMEOUT)));
    184 		read(FD, &c, 1);
    185 		alarm(0);
    186 		c &= 0177;
    187 		if (c != *s++)
    188 			return (0);
    189 	}
    190 	signal(SIGALRM, f);
    191 	return (timeout == 0);
    192 }
    193