Home | History | Annotate | Line # | Download | only in aculib
biz22.c revision 1.1.1.1 
      1 /*
      2  * Copyright (c) 1983 The Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static char sccsid[] = "@(#)biz22.c	5.5 (Berkeley) 3/2/91";
     36 #endif /* not lint */
     37 
     38 #include "tip.h"
     39 
     40 #define DISCONNECT_CMD	"\20\04"	/* disconnection string */
     41 
     42 static	void sigALRM();
     43 static	int timeout = 0;
     44 static	jmp_buf timeoutbuf;
     45 
     46 /*
     47  * Dial up on a BIZCOMP Model 1022 with either
     48  * 	tone dialing (mod = "V")
     49  *	pulse dialing (mod = "W")
     50  */
     51 static int
     52 biz_dialer(num, mod)
     53 	char *num, *mod;
     54 {
     55 	register int connected = 0;
     56 	char cbuf[40];
     57 	static int cmd(), detect();
     58 
     59 	if (boolean(value(VERBOSE)))
     60 		printf("\nstarting call...");
     61 	/*
     62 	 * Disable auto-answer and configure for tone/pulse
     63 	 *  dialing
     64 	 */
     65 	if (cmd("\02K\r")) {
     66 		printf("can't initialize bizcomp...");
     67 		return (0);
     68 	}
     69 	strcpy(cbuf, "\02.\r");
     70 	cbuf[1] = *mod;
     71 	if (cmd(cbuf)) {
     72 		printf("can't set dialing mode...");
     73 		return (0);
     74 	}
     75 	strcpy(cbuf, "\02D");
     76 	strcat(cbuf, num);
     77 	strcat(cbuf, "\r");
     78 	write(FD, cbuf, strlen(cbuf));
     79 	if (!detect("7\r")) {
     80 		printf("can't get dial tone...");
     81 		return (0);
     82 	}
     83 	if (boolean(value(VERBOSE)))
     84 		printf("ringing...");
     85 	/*
     86 	 * The reply from the BIZCOMP should be:
     87 	 *	2 \r or 7 \r	failure
     88 	 *	1 \r		success
     89 	 */
     90 	connected = detect("1\r");
     91 #ifdef ACULOG
     92 	if (timeout) {
     93 		char line[80];
     94 
     95 		sprintf(line, "%d second dial timeout",
     96 			number(value(DIALTIMEOUT)));
     97 		logent(value(HOST), num, "biz1022", line);
     98 	}
     99 #endif
    100 	if (timeout)
    101 		biz22_disconnect();	/* insurance */
    102 	return (connected);
    103 }
    104 
    105 biz22w_dialer(num, acu)
    106 	char *num, *acu;
    107 {
    108 
    109 	return (biz_dialer(num, "W"));
    110 }
    111 
    112 biz22f_dialer(num, acu)
    113 	char *num, *acu;
    114 {
    115 
    116 	return (biz_dialer(num, "V"));
    117 }
    118 
    119 biz22_disconnect()
    120 {
    121 	int rw = 2;
    122 
    123 	write(FD, DISCONNECT_CMD, 4);
    124 	sleep(2);
    125 	ioctl(FD, TIOCFLUSH, &rw);
    126 }
    127 
    128 biz22_abort()
    129 {
    130 
    131 	write(FD, "\02", 1);
    132 }
    133 
    134 static void
    135 sigALRM()
    136 {
    137 
    138 	timeout = 1;
    139 	longjmp(timeoutbuf, 1);
    140 }
    141 
    142 static int
    143 cmd(s)
    144 	register char *s;
    145 {
    146 	sig_t f;
    147 	char c;
    148 
    149 	write(FD, s, strlen(s));
    150 	f = signal(SIGALRM, sigALRM);
    151 	if (setjmp(timeoutbuf)) {
    152 		biz22_abort();
    153 		signal(SIGALRM, f);
    154 		return (1);
    155 	}
    156 	alarm(number(value(DIALTIMEOUT)));
    157 	read(FD, &c, 1);
    158 	alarm(0);
    159 	signal(SIGALRM, f);
    160 	c &= 0177;
    161 	return (c != '\r');
    162 }
    163 
    164 static int
    165 detect(s)
    166 	register char *s;
    167 {
    168 	sig_t f;
    169 	char c;
    170 
    171 	f = signal(SIGALRM, sigALRM);
    172 	timeout = 0;
    173 	while (*s) {
    174 		if (setjmp(timeoutbuf)) {
    175 			biz22_abort();
    176 			break;
    177 		}
    178 		alarm(number(value(DIALTIMEOUT)));
    179 		read(FD, &c, 1);
    180 		alarm(0);
    181 		c &= 0177;
    182 		if (c != *s++)
    183 			return (0);
    184 	}
    185 	signal(SIGALRM, f);
    186 	return (timeout == 0);
    187 }
    188