libnsl/dial/callers.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
/*	  All Rights Reserved  	*/


/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include "uucp.h"
#include <rpc/trace.h>

#ifdef BSD4_2
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#endif
#ifdef UNET
#include  "UNET/unetio.h"
#include  "UNET/tcp.h"
#endif


EXTERN void alarmtr();
EXTERN jmp_buf Sjbuf;
EXTERN char *fdig(), *strecpy();
EXTERN int interface();
EXTERN int fd_mklock(), fd_cklock(), chat(), getdialline();
EXTERN void fixline(), fd_rmlock();
static void translate();
static int gdial();
EXTERN int	Modemctrl;
EXTERN unsigned connecttime;
EXTERN int (*Setup)();

extern int	_fcntl(int, int, ...);

/*
 *	to add a new caller:
 *	declare the function that knows how to call on the device,
 *	add a line to the callers table giving the name of the device
 *	(from Devices file) and the name of the function
 *	add the function to the end of this file
 */

#ifdef DIAL801
EXTERN int	dial801();
EXTERN int	open801();
#endif

#ifdef DATAKIT
EXTERN int	dkcall();
#endif /* DATAKIT */

#ifdef V8
int	Dialout();
#endif

#ifdef TCP
GLOBAL int	unetcall();
GLOBAL int	tcpcall();
#endif /* TCP */

#ifdef SYTEK
int	sytcall();
#endif /* SYTEK */

#ifdef TLI
EXTERN int	tlicall();
#endif /* TLI */

static struct caller Caller[] = {

#ifdef DIAL801
	{"801",		dial801},
	{"212",		dial801},
#endif /* DIAL801 */

#ifdef V8
	{"Dialout",	Dialout},	/* ditto but using dialout(III) */
#endif

#ifdef TCP
#ifdef BSD4_2
	{"TCP",		tcpcall},	/* 4.2BSD sockets */
#else /* !BSD4_2 */
#ifdef UNET
	{"TCP",		unetcall},	/* 3com implementation of tcp */
	{"Unetserver",	unetcall},
#endif /* UNET */
#endif /* BSD4_2 */
#endif /* TCP */

#ifdef DATAKIT
	{"DK",		dkcall},	/* standard AT&T DATAKIT VCS caller */
#endif /* DATAKIT */

#ifdef SYTEK
	{"Sytek",	sytcall},	/* untested but should work */
#endif /* SYTEK */

#ifdef TLI
	{"TLI",		tlicall},	/* AT&T Transport Layer Interface */
#ifdef TLIS
	{"TLIS",	tlicall},	/* AT&T Transport Layer Interface */
#endif /*  TLIS  */
#endif /* TLI */

	{NULL, 		NULL}		/* this line must be last */
};

/*
 *	exphone - expand phone number for given prefix and number
 *
 *	return code - none
 */

static void
exphone(in, out)
char *in, *out;
{
	FILE *fn;
	char pre[MAXPH], npart[MAXPH], tpre[MAXPH], p[MAXPH];
	char buf[BUFSIZ];
	char *s1;

	trace1(TR_exphone, 0);
	if (!isalpha(*in)) {
		(void) strcpy(out, in);
		trace1(TR_exphone, 1);
		return;
	}

	s1=pre;
	while (isalpha(*in))
		*s1++ = *in++;
	*s1 = NULLCHAR;
	s1 = npart;
	while (*in != NULLCHAR)
		*s1++ = *in++;
	*s1 = NULLCHAR;

	tpre[0] = NULLCHAR;
	fn = fopen(DIALCODES, "r");
	if (fn != NULL) {
		while (fgets(buf, BUFSIZ, fn)) {
			if (sscanf(buf, "%s%s", p, tpre) < 1)
				continue;
			if (EQUALS(p, pre))
				break;
			tpre[0] = NULLCHAR;
		}
		fclose(fn);
	}

	(void) strcpy(out, tpre);
	(void) strcat(out, npart);
	trace1(TR_exphone, 1);
	return;
}

/*
 * repphone - Replace \D and \T sequences in arg with phone
 * expanding and translating as appropriate.
 */
static char *
repphone(arg, phone, trstr)
register char *arg, *phone, *trstr;
{
	static char *pbuf;	/* dynamically allocated below */
	register char *fp, *tp;

	trace1(TR_repphone, 0);
	if (pbuf == NULL) {
		pbuf = (char *)malloc(2*(MAXPH+2));
		if (pbuf == NULL)
			return (arg);
	}
	for (tp=pbuf; *arg; arg++) {
		if (*arg != '\\') {
			*tp++ = *arg;
			continue;
		} else {
			switch (*(arg+1)) {
			case 'T':
				exphone(phone, tp);
				translate(trstr, tp);
				for (; *tp; tp++)
				    ;
				arg++;
				break;
			case 'D':
				for (fp=phone; *tp = *fp++; tp++)
				    ;
				arg++;
				break;
			default:
				*tp++ = *arg;
				break;
			}
		}
	}
	*tp = '\0';
	trace1(TR_repphone, 1);
	return (pbuf);
}

static u_int saved_mode;
static char saved_dcname[20];

/*
 * processdev - Process a line from the Devices file
 *
 * return codes:
 *	file descriptor  -  succeeded
 *	FAIL  -  failed
 */
GLOBAL int
processdev(flds, dev)
register char *flds[], *dev[];
{
	int dcf = -1;
	register struct caller	*ca;
	char *args[D_MAX+1], dcname[20];
	register char **sdev;
	EXTERN int pop_push();
	EXTERN void  setdevcfg();
	int nullfd;
	char *phonecl;			/* clear phone string */
	char phoneex[2*(MAXPH+2)];	/* expanded phone string */
	EXTERN void ttygenbrk();
	struct termio tty_orig;
	int ret_orig = -1;

	trace1(TR_processdev, 0);
	sdev = dev;
	/*	set up default "break" routine	*/
	genbrk = ttygenbrk;

	/*	initialize Devconfig info	*/
	DEBUG(5, "processdev: calling setdevcfg(%s, ", Progname);
	DEBUG(5, "%s)\n", flds[F_TYPE]);
	setdevcfg(Progname, flds[F_TYPE]);

	for (ca = Caller; ca->CA_type != NULL; ca++) {
		/* This will find built-in caller functions */
		if (EQUALS(ca->CA_type, dev[D_CALLER])) {
			DEBUG(5, "Internal caller type %s\n", dev[D_CALLER]);
			if (dev[D_ARG] == NULL) {
				/* if NULL - assume translate */
				dev[D_ARG+1] = NULL;	/* needed for for loop later to mark the end */
				dev[D_ARG] = "\\T";
			}
			dev[D_ARG] = repphone(dev[D_ARG], flds[F_PHONE], "");
			if ((dcf = (*(ca->CA_caller))(flds, dev)) < 0) {
				trace1(TR_processdev, 1);
				return (dcf) ;
			}
			if (interface(ca->CA_type)) {
				DEBUG(5, "interface(%s) failed", ca->CA_type);
				Uerror = SS_DEVICE_FAILED;
				/*	restore vanilla unix interface	*/
				(void)interface("UNIX");
				trace1(TR_processdev, 1);
				return (FAIL);
			}
			dev += 2; /* Skip to next CALLER and ARG */
			break;
		}
	}
	if (dcf == -1) {
		/* Here if not a built-in caller function */

		/* We do locking (file and advisory) after open	*/

		/*
		 * Open the line
		 */
		if (*dev[D_LINE] != '/') {
			(void) sprintf(dcname, "/dev/%s", dev[D_LINE]);
		} else {
			(void) strcpy(dcname, dev[D_LINE]);
		}
		/* take care of the possible partial open fd */
		(void) close(nullfd = open("/", O_RDONLY));
		if (setjmp(Sjbuf)) {
			(void) close(nullfd);
			DEBUG(1, "generic open timeout\n%s", "");
			logent("generic open", "TIMEOUT");
			Uerror = SS_CANT_ACCESS_DEVICE;
			goto bad;
		}
		(void) signal(SIGALRM, alarmtr);
		(void) alarm(10);
		if (Modemctrl) {
			DEBUG(7, "opening with O_NDELAY set\n%s", "");
			dcf = open(dcname, (O_RDWR | O_NDELAY) );
			saved_mode = O_RDWR | O_NDELAY;
		} else {
			dcf = open(dcname, O_RDWR );
			saved_mode = O_RDWR;
		}
		strcpy(saved_dcname, dcname);
		(void) alarm(0);
		if (dcf < 0) {
			DEBUG(1, "generic open failed, errno = %d\n", errno);
			(void) close(nullfd);
			logent("generic open", "FAILED");
			Uerror = SS_CANT_ACCESS_DEVICE;
			goto bad;
		}

		/* check locks BEFORE modifying the stream */

		if (fd_mklock(dcf) != SUCCESS) {
			DEBUG(1, "failed to lock device %s\n", dcname);
			Uerror = SS_LOCKED_DEVICE;
			goto bad;
		}

		if (Modemctrl) {
			DEBUG(7, "clear O_NDELAY\n%s", "");
			if (_fcntl(dcf, F_SETFL,
				(_fcntl(dcf, F_GETFL, 0) & ~O_NDELAY)) < 0) {
				DEBUG(7, "clear O_NDELAY failed, errno %d\n", errno);
				Uerror = SS_DEVICE_FAILED;
				goto bad;
			}
		}
	}

	if ((*Setup)(MASTER, &dcf, &dcf)) {
		/*	any device|system lock files we should remove?	*/
		DEBUG(5, "MASTER Setup failed%s", "");
		Uerror = SS_DEVICE_FAILED;
		goto bad;
	}

	/* configure any requested streams modules */
	if (!pop_push(dcf)) {
		DEBUG(5, "STREAMS module configuration failed%s\n","");
		Uerror = SS_DEVICE_FAILED;
		goto bad;
	}

	/* save initial state of line in case script fails */
	ret_orig = ioctl(dcf, TCGETA, &tty_orig);

	/* use sdev[] since dev[] is incremented for internal callers */
	fixline(dcf, atoi(fdig(sdev[D_CLASS])), D_DIRECT);

	/*
	 * Now loop through the remaining callers and chat
	 * according to scripts in dialers file.
	 */
	for (; dev[D_CALLER] != NULL; dev += 2) {
		register int w;
		/*
		 * Scan Dialers file to find an entry
		 */
		if ((w = gdial(dev[D_CALLER], args, D_MAX)) < 1) {
			logent("generic call to gdial", "FAILED");
			Uerror = SS_CANT_ACCESS_DEVICE;
			goto bad;
		}
		if (w <= 2)	/* do nothing - no chat */
			break;
		/*
		 * Translate the phone number
		 */
		if (dev[D_ARG] == NULL) {
			/* if NULL - assume no translation */
			dev[D_ARG+1] = NULL; /* needed for for loop to mark the end */
			dev[D_ARG] = "\\D";
		}

		phonecl = repphone(dev[D_ARG], flds[F_PHONE], args[1]);
		exphone(phonecl, phoneex);
		translate(args[1], phoneex);
		/*
		 * Chat
		 */
		if (chat(w-2, &args[2], dcf, phonecl, phoneex) != SUCCESS) {
			CDEBUG(5, "\nCHAT gdial(%s) FAILED\n", dev[D_CALLER]);
			Uerror = SS_CHAT_FAILED;
			goto bad;
		}
	}
	/*
	 * Success at last!
	 */
	strcpy(Dc, sdev[D_LINE]);
	trace1(TR_processdev, 1);
	return (dcf);
bad:
	if (dcf >= 0) {
		/* reset line settings if we got them in the beginning */
		if (ret_orig == 0)
			(void) ioctl(dcf, TCSETAW, &tty_orig);
		fd_rmlock(dcf);
		(void)close(dcf);
	}
	/*	restore vanilla unix interface	*/
	(void)interface("UNIX");
	trace1(TR_processdev, 1);
	return (FAIL);
}

/*
 * clear_hup()	clear the hangup state of the given device
 */
GLOBAL int
clear_hup(dcf)
int dcf;
{
	int ndcf;
	if ((ndcf = open(saved_dcname, saved_mode)) < 0) {
		return (FAIL);
	}
	if (ndcf != dcf) {
		close(ndcf);
	}
	return (SUCCESS);
}


/*
 * translate the pairs of characters present in the first
 * string whenever the first of the pair appears in the second
 * string.
 */
static void
translate(ttab, str)
register char *ttab, *str;
{
	register char *s;
	trace1(TR_translate, 0);

	for (;*ttab && *(ttab+1); ttab += 2)
		for (s=str;*s;s++)
			if (*ttab == *s)
				*s = *(ttab+1);
	trace1(TR_translate, 1);
	return;
}

#define MAXLINE	512
/*
 * Get the information about the dialer.
 * gdial(type, arps, narps)
 *	type	-> type of dialer (e.g., penril)
 *	arps	-> array of pointers returned by gdial
 *	narps	-> number of elements in array returned by gdial
 * Return value:
 *	-1	-> Can't open DIALERFILE
 *	0	-> requested type not found
 *	>0	-> success - number of fields filled in
 */
static int
gdial(type, arps, narps)
register char *type, *arps[];
register int narps;
{
	static char *info;	/* dynamically allocated MAXLINE */
	int na;
	EXTERN void dialreset();
	EXTERN char * currdial();

	trace2(TR_gdial, 0, narps);
	DEBUG(2, "gdial(%s) called\n", type);
	if (info == NULL) {
		info = (char *)malloc(MAXLINE);
		if (info == NULL) {
			DEBUG(1, "malloc failed for info in gdial\n", 0);
			return (0);
		}
	}
	while (getdialline(info, MAXLINE)) {
		if ((info[0] == '#') || (info[0] == ' ') ||
		    (info[0] == '\t') || (info[0] == '\n'))
			continue;
		if ((na = getargs(info, arps, narps)) == 0)
			continue;
		if (EQUALS(arps[0], type)) {
		    DEBUG(5, "Trying caller script '%s'", type);
		    DEBUG(5, " from '%s'.\n", currdial());
		    dialreset();
		    bsfix(arps);
		    trace2(TR_gdial, 1, narps);
		    return (na);
		}
	}
	DEBUG(1, "%s not found in Dialers file\n", type);
	dialreset();
	trace2(TR_gdial, 1, narps);
	return (0);
}


#ifdef DATAKIT

/*
 *	dkcall(flds, dev)	make a DATAKIT VCS connection
 *				  DATAKIT VCS is a trademark of AT&T
 *
 *	return codes:
 *		>0 - file number - ok
 *		FAIL - failed
 */

#include "dk.h"
EXTERN int dkdial();

/*ARGSUSED*/
GLOBAL int
dkcall(flds, dev)
char *flds[], *dev[];
{
	register fd;
#ifdef V8
	extern int cdkp_ld;
#endif

	char	dialstring[64];
	EXTERN	void dkbreak();

	trace1(TR_dkcall, 0);
	strcpy(dialstring, dev[D_ARG]);
	DEBUG(4, "dkcall(%s)\n", dialstring);


#ifdef V8
	if (setjmp(Sjbuf)) {
		Uerror = SS_DIAL_FAILED;
		trace1(TR_dkcall, 1);
		return (FAIL);
	}

	(void) signal(SIGALRM, alarmtr);
	(void) alarm(connecttime);
	DEBUG(4, "tdkdial(%s", flds[F_PHONE]);
	DEBUG(4, ", %d)\n", atoi(dev[D_CLASS]));
    	if ((fd = tdkdial(flds[F_PHONE], atoi(dev[D_CLASS]))) >= 0)
	    if (dkproto(fd, cdkp_ld) < 0)
	       {
	    	close(fd);
	    	fd = -1;
	       }
	(void) alarm(0);
#else
	fd = dkdial(dialstring);
#endif

	(void) strcpy(Dc, "DK");
	if (fd < 0) {
		Uerror = SS_DIAL_FAILED;
		trace1(TR_dkcall, 1);
		return (FAIL);
	}
	else {
		genbrk = dkbreak;
		trace1(TR_dkcall, 1);
		return (fd);
	}
}

#endif /* DATAKIT */

#ifdef TCP

/*
 *	tcpcall(flds, dev)	make ethernet/socket connection
 *
 *	return codes:
 *		>0 - file number - ok
 *		FAIL - failed
 */

#ifndef BSD4_2
/*ARGSUSED*/
GLOBAL int
tcpcall(flds, dev)
char	*flds[], *dev[];
{
	trace1(TR_tcpcall, 0);
	Uerror = SS_NO_DEVICE;
	trace1(TR_tcpcall, 1);
	return (FAIL);
}
#else /* BSD4_2 */
GLOBAL int
tcpcall(flds, dev)
char *flds[], *dev[];
{
	int ret;
	short port;
	struct servent *sp;
	struct hostent *hp;
	struct sockaddr_in sin;

	trace1(TR_tcpcall, 0);
	port = atoi(dev[D_ARG]);
	if (port == 0) {
		sp = getservbyname("uucp", "tcp");
		ASSERT(sp != NULL, "No uucp server", 0, 0);
		port = sp->s_port;
	}
	else port = htons(port);
	hp = gethostbyname(flds[F_NAME]);
	if (hp == NULL) {
		logent("tcpopen", "no such host");
		Uerror = SS_NO_DEVICE;
		trace1(TR_tcpcall, 1);
		return (FAIL);
	}
	DEBUG(4, "tcpdial host %s, ", flds[F_NAME]);
	DEBUG(4, "port %d\n", ntohs(port));

	ret = socket(AF_INET, SOCK_STREAM, 0);
	if (ret < 0) {
		char *errstr;

		if ((errstr = strerror(errno)) != (char *) NULL) {
			DEBUG(5, "no socket: %s\n", errstr);
			logent("no socket", errstr);
		}
		else {
			DEBUG(5, "no socket, errno %d\n", errno);
			logent("tcpopen", "NO SOCKET");
		}
		Uerror = SS_NO_DEVICE;
		trace1(TR_tcpcall, 1);
		return (FAIL);
	}
	sin.sin_family = hp->h_addrtype;
	bcopy(hp->h_addr, (caddr_t)&sin.sin_addr, hp->h_length);
	sin.sin_port = port;
	if (setjmp(Sjbuf)) {
		DEBUG(4, "timeout tcpopen\n%s", "");
		logent("tcpopen", "TIMEOUT");
		Uerror = SS_NO_DEVICE;
		trace1(TR_tcpcall, 1);
		return (FAIL);
	}
	(void) signal(SIGALRM, alarmtr);
	(void) alarm(connecttime);
	DEBUG(7, "family: %d\n", sin.sin_family);
	DEBUG(7, "port: %d\n", sin.sin_port);
	DEBUG(7, "addr: %08x\n",*((int *) &sin.sin_addr));
	if (connect(ret, (caddr_t)&sin, sizeof (sin)) < 0) {
		char *errstr;

		(void) alarm(0);
		(void) close(ret);
		if ((errstr = strerror(errno)) != (char *) NULL) {
			DEBUG(5, "connect failed: %s\n", errstr);
			logent("connect failed", errstr);
		}
		else {
			DEBUG(5, "connect failed, errno %d\n", errno);
			logent("tcpopen", "CONNECT FAILED");
		}
		Uerror = SS_NO_DEVICE;
		trace1(TR_tcpcall, 1);
		return (FAIL);
	}
	(void) signal(SIGPIPE, SIG_IGN);  /* watch out for broken ipc link...*/
	(void) alarm(0);
	(void) strcpy(Dc, "IPC");
	trace1(TR_tcpcall, 1);
 	return (ret);
}

#endif /* BSD4_2 */

/*
 *	unetcall(flds, dev)	make ethernet connection
 *
 *	return codes:
 *		>0 - file number - ok
 *		FAIL - failed
 */

#ifndef UNET
GLOBAL int
unetcall(flds, dev)
char	*flds[], *dev[];
{
	trace1(TR_unetcall, 0);
	Uerror = SS_NO_DEVICE;
	trace1(TR_unetcall, 1);
 	return (FAIL);
}
#else /* UNET */
GLOBAL int
unetcall(flds, dev)
char *flds[], *dev[];
{
	int ret;
	int port;

	trace1(TR_unetcall, 0);
	port = atoi(dev[D_ARG]);
	DEBUG(4, "unetdial host %s, ", flds[F_NAME]);
	DEBUG(4, "port %d\n", port);
	(void) alarm(connecttime);
	ret = tcpopen(flds[F_NAME], port, 0, TO_ACTIVE, "rw");
	(void) alarm(0);
	endhnent();
	if (ret < 0) {
		DEBUG(5, "tcpopen failed: errno %d\n", errno);
		Uerror = SS_DIAL_FAILED;
		trace1(TR_unetcall, 1);
		return (FAIL);
	}
	(void) strcpy(Dc, "UNET");
	trace1(TR_unetcall, 1);
	return (ret);
}
#endif /* UNET */

#endif /* TCP */

#ifdef SYTEK

/*
 *	sytcall(flds, dev)	make a sytek connection
 *
 *	return codes:
 *		>0 - file number - ok
 *		FAIL - failed
 */

/*ARGSUSED*/
GLOBAL int
sytcall(flds, dev)
char *flds[], *dev[];
{
	int dcr, dcr2, nullfd, ret;
	char dcname[20], command[BUFSIZ];


	trace1(TR_sytcall, 0);
	(void) sprintf(dcname, "/dev/%s", dev[D_LINE]);
	DEBUG(4, "dc - %s, ", dcname);
	dcr = open(dcname, O_WRONLY|O_NDELAY);
	if (dcr < 0) {
		Uerror = SS_DIAL_FAILED;
		DEBUG(4, "OPEN FAILED %s\n", dcname);
		trace1(TR_sytcall, 1);
		return (FAIL);
	}
	if (fd_mklock(dcr) != SUCCESS) {
		(void)close(dcr);
		DEBUG(1, "failed to lock device %s\n", dcname);
		Uerror = SS_LOCKED_DEVICE;
		trace1(TR_sytcall, 1);
		return (FAIL);
	}

	sytfixline(dcr, atoi(fdig(dev[D_CLASS])), D_DIRECT);
	(void) sleep(2);
	DEBUG(4, "Calling Sytek unit %s\n", dev[D_ARG]);
	(void) sprintf(command,"\r\rcall %s\r", dev[D_ARG]);
	ret = (*Write)(dcr, command, strlen(command));
	(void) sleep(1);
	DEBUG(4, "COM1 return = %d\n", ret);
	sytfix2line(dcr);
	(void) close(nullfd = open("/", O_RDONLY));
	(void) signal(SIGALRM, alarmtr);
	if (setjmp(Sjbuf)) {
		DEBUG(4, "timeout sytek open\n%s", "");
		(void) close(nullfd);
		(void) close(dcr2);
		fd_rmlock(dcr);
		(void) close(dcr);
		Uerror = SS_DIAL_FAILED;
		trace1(TR_sytcall, 1);
		return (FAIL);
	}
	(void) alarm(10);
	dcr2 = open(dcname,O_RDWR);
	(void) alarm(0);
	fd_rmlock(dcr);
	(void) close(dcr);
	if (dcr2 < 0) {
		DEBUG(4, "OPEN 2 FAILED %s\n", dcname);
		Uerror = SS_DIAL_FAILED;
		(void) close(nullfd);	/* kernel might think dc2 is open */
		trace1(TR_sytcall, 1);
		return (FAIL);
	}
	if (fd_mklock(dcr2) != SUCCESS) {
		(void)close(dcr2);
		DEBUG(1, "failed to lock device %s\n", dcname);
		Uerror = SS_LOCKED_DEVICE;
		trace1(TR_sytcall, 1);
		return (FAIL);
	}
	trace1(TR_sytcall, 1);
	return (dcr2);
}

#endif /* SYTEK */

#ifdef DIAL801

/*
 *	dial801(flds, dev)	dial remote machine on 801/801
 *	char *flds[], *dev[];
 *
 *	return codes:
 *		file descriptor  -  succeeded
 *		FAIL  -  failed
 *
 *	unfortunately, open801() is different for usg and non-usg
 */

/*ARGSUSED*/
GLOBAL int
dial801(flds, dev)
char *flds[], *dev[];
{
	char dcname[20], dnname[20], phone[MAXPH+2];
	int dcf = -1, speed;

	trace1(TR_dial801, 0);
	(void) sprintf(dnname, "/dev/%s", dev[D_CALLDEV]);
	(void) sprintf(phone, "%s%s", dev[D_ARG]   , ACULAST);
	(void) sprintf(dcname, "/dev/%s", dev[D_LINE]);
	CDEBUG(1, "Use Port %s, ", dcname);
	DEBUG(4, "acu - %s, ", dnname);
	VERBOSE("Trying modem - %s, ", dcname);	/* for cu */
	VERBOSE("acu - %s, ", dnname);	/* for cu */
	if (getuid()==0 || GRPCHK(getgid())) {
		CDEBUG(1, "Phone Number  %s\n", phone);
		/* In cu, only give out the phone number to trusted people. */
		VERBOSE("calling  %s:  ", phone);	/* for cu */
	}
	speed = atoi(fdig(dev[D_CLASS]));
	dcf = open801(dcname, dnname, phone, speed);
	if (dcf >= 0) {
	        if (fd_mklock(dcf) != SUCCESS) {
			(void) close(dcf);
			DEBUG(5, "fd_mklock line %s failed\n", dev[D_LINE]);
			Uerror = SS_LOCKED_DEVICE;
			trace1(TR_dial801, 1);
			return (FAIL);
		}
		fixline(dcf, speed, D_ACU);
		(void) strcpy(Dc, dev[D_LINE]);	/* for later unlock() */
		VERBOSE("SUCCEEDED\n%s", "");
	} else {
		VERBOSE("FAILED\n%s", "");
	}
	trace1(TR_dial801, 1);
	return (dcf);
}


#ifndef ATTSV
/*ARGSUSED*/
GLOBAL int
open801(dcname, dnname, phone, speed)
char *dcname, *dnname, *phone;
{
	int nw, lt, dcf = -1, nullfd, dnf = -1;
	pid_t w_ret, pid = -1;
	unsigned timelim;

	trace1(TR_open801, 0);
	if ((dnf = open(dnname, O_WRONLY)) < 0) {
		DEBUG(5, "can't open %s\n", dnname);
		Uerror = SS_CANT_ACCESS_DEVICE;
		trace1(TR_open801, 1);
		return (FAIL);
	}
	DEBUG(5, "%s is open\n", dnname);

	(void) close(nullfd = open("/dev/null", O_RDONLY));/* partial open hack */
	if (setjmp(Sjbuf)) {
		DEBUG(4, "timeout modem open\n%s", "");
		(void) close(nullfd);
		(void) close(dcf);
		(void) close(dnf);
		logent("801 open", "TIMEOUT");
		if (pid > 0) {
			kill(pid, 9);
			wait((int *) 0);
		}
		Uerror = SS_DIAL_FAILED;
		trace1(TR_open801, 1);
		return (FAIL);
	}
	(void) signal(SIGALRM, alarmtr);
	timelim = 5 * strlen(phone);
	(void) alarm(timelim < connecttime ? connecttime : timelim);
	if ((pid = fork()) == 0) {
		sleep(2);
		nw = (*Write)(dnf, phone, lt = strlen(phone));
		if (nw != lt) {
			DEBUG(4, "ACU write error %d\n", errno);
			logent("ACU write", "FAILED");
			trace1(TR_open801, 1);
			exit(1);
		}
		DEBUG(4, "ACU write ok\n%s", "");
		trace1(TR_open801, 1);
		exit(0);
	}
	/*  open line - will return on carrier */
	dcf = open(dcname, O_RDWR);

	DEBUG(4, "dcf is %d\n", dcf);
	if (dcf < 0) {	/* handle like a timeout */
		(void) alarm(0);
		longjmp(Sjbuf, 1);
	}

	/* modem is open */
	while ((w_ret = wait(&lt)) != pid)
		if (w_ret == -1 && errno != EINTR) {
			DEBUG(4, "Wait failed errno=%d\n", errno);
			(void) close(dcf);
			(void) close(dnf);
			Uerror = SS_DIAL_FAILED;
			trace1(TR_open801, 1);
			return (FAIL);
		}
	(void) alarm(0);

	(void) close(dnf);	/* no reason to keep the 801 open */
	if (lt != 0) {
		DEBUG(4, "Fork Stat %o\n", lt);
		(void) close(dcf);
		Uerror = SS_DIAL_FAILED;
		trace1(TR_open801, 1);
		return (FAIL);
	}
	trace1(TR_open801, 1);
	return (dcf);
}

#else /* ATTSV */

GLOBAL int
open801(dcname, dnname, phone, speed)
char *dcname, *dnname, *phone;
{
	int nw, lt, dcf = -1, nullfd, dnf = -1, ret;
	unsigned timelim;

	trace1(TR_open801, 0);
	(void) close(nullfd = open("/", O_RDONLY));	/* partial open hack */
	if (setjmp(Sjbuf)) {
		DEBUG(4, "DN write %s\n", "timeout");
		(void) close(dnf);
		(void) close(dcf);
		(void) close(nullfd);
		Uerror = SS_DIAL_FAILED;
		trace1(TR_open801, 1);
		return (FAIL);
	}
	(void) signal(SIGALRM, alarmtr);
	timelim = 5 * strlen(phone);
	(void) alarm(timelim < connecttime ? connecttime : timelim);

	if ((dnf = open(dnname, O_WRONLY)) < 0) {
		DEBUG(5, "can't open %s\n", dnname);
		Uerror = SS_CANT_ACCESS_DEVICE;
		trace1(TR_open801, 1);
		return (FAIL);
	}
	DEBUG(5, "%s is open\n", dnname);
	if (fd_mklock(dnf) != SUCCESS) {
		(void)close(dnf);
		DEBUG(1, "failed to lock device %s\n", dnname);
		Uerror = SS_LOCKED_DEVICE;
	}
	if ((dcf = open(dcname, O_RDWR | O_NDELAY)) < 0) {
		DEBUG(5, "can't open %s\n", dcname);
		Uerror = SS_CANT_ACCESS_DEVICE;
		trace1(TR_open801, 1);
		return (FAIL);
	}
	if (fd_mklock(dcf) != SUCCESS) {
		(void)close(dcf);
		DEBUG(1, "failed to lock device %s\n", dcname);
		Uerror = SS_LOCKED_DEVICE;
		trace1(TR_open801, 1);
		return (FAIL);
	}

	DEBUG(4, "dcf is %d\n", dcf);
	fixline(dcf, speed, D_ACU);
	nw = (*Write)(dnf, phone, lt = strlen(phone));
	if (nw != lt) {
		(void) alarm(0);
		DEBUG(4, "ACU write error %d\n", errno);
		(void) close(dnf);
		(void) close(dcf);
		Uerror = SS_DIAL_FAILED;
		trace1(TR_open801, 1);
		return (FAIL);
	} else
		DEBUG(4, "ACU write ok\n%s", "");

	(void) close(dnf);
	(void) close(nullfd = open("/", O_RDONLY));	/* partial open hack */
	ret = open(dcname, O_RDWR);  /* wait for carrier  */
	(void) alarm(0);
	(void) close(ret);	/* close 2nd modem open() */
	if (ret < 0) {		/* open() interrupted by alarm */
		DEBUG(4, "Line open %s\n", "failed");
		Uerror = SS_DIAL_FAILED;
		(void) close(nullfd);		/* close partially opened modem */
		trace1(TR_open801, 1);
		return (FAIL);
	}
	(void) _fcntl(dcf,F_SETFL, _fcntl(dcf, F_GETFL, 0) & ~O_NDELAY);
	trace1(TR_open801, 1);
	return (dcf);
}
#endif /* ATTSV */

#endif /* DIAL801 */

#ifdef V8
GLOBAL int
Dialout(flds)
char *flds[];
{
    int fd;
    char phone[MAXPH+2];


    trace1(TR_Dialout, 0);
    exphone(flds[F_PHONE], phone);

    DEBUG(4, "call dialout(%s", phone);
    DEBUG(4, ", %s)\n", dev[D_CLASS]);
    fd = dialout(phone, dev[D_CLASS]);
    if (fd == -1)
	Uerror = SS_NO_DEVICE;
    if (fd == -3)
	Uerror = SS_DIAL_FAILED;
    if (fd == -9)
	Uerror = SS_DEVICE_FAILED;

    (void) strcpy(Dc, "Dialout");

    trace1(TR_Dialout, 1);
    return (fd);
}
#endif /* V8 */

#ifdef TLI
/*
 *
 * AT&T Transport Layer Interface
 *
 * expected in Devices
 *	TLI line1 - - TLI
 * or
 *	TLIS line1 - - TLIS
 *
 */

#include <tiuser.h>

#if defined(__STDC__)
EXTERN void tfaillog(int fd, const char *s);
#else
EXTERN void tfaillog();
#endif

char *t_alloc();
int t_bind(), t_close(), t_connect(), t_free(), t_look(), t_open(), t_rcvdis();

#define	CONNECT_ATTEMPTS	3
#define	TFREE(p, type)	if ((p)) t_free((char *)(p), (type))

/*
 * returns fd to remote uucp daemon
 */
/*ARGSUSED*/
GLOBAL int
tlicall(flds, dev)
char *flds[];
char *dev[];
{
	char		addrbuf[ BUFSIZ ];
	char		devname[MAXNAMESIZE];
	int		fd;
	register int	i, j;
	struct t_bind	*bind_ret = 0;
	struct t_info	tinfo;
	struct t_call	*sndcall = 0, *rcvcall = 0;

	EXTERN struct netbuf	*stoa();

        trace1(TR_tlicall, 0);
	if (dev[D_LINE][0] != '/') {
		/*	dev holds device name relative to /dev	*/
		sprintf(devname, "/dev/%s", dev[D_LINE]);
	} else {
		/*	dev holds full path name of device	*/
		strcpy(devname, dev[D_LINE]);
	}
	/* gimme local transport endpoint */
	errno = t_errno = 0;
	if (setjmp(Sjbuf)) {
		DEBUG(1, "t_open timeout\n%s", "");
		logent("t_open", "TIMEOUT");
		Uerror = SS_NO_DEVICE;
        	trace1(TR_tlicall, 1);
		return (FAIL);
	}
	(void) signal(SIGALRM, alarmtr);
	(void) alarm(5);
	fd = t_open(devname, O_RDWR, &tinfo);
	(void) alarm(0);
	if (fd < 0) {
		tfaillog(fd, "t_open");
		Uerror = SS_NO_DEVICE;
        	trace1(TR_tlicall, 1);
		return (FAIL);
	}
	if (fd_mklock(fd) != SUCCESS) {
		(void)t_close(fd);
		DEBUG(1, "tlicall: failed to lock device %s\n", devname);
		Uerror = SS_LOCKED_DEVICE;
        	trace1(TR_tlicall, 1);
		return (FAIL);
	}

	/* allocate tli structures	*/
	errno = t_errno = 0;
	if ((bind_ret = (struct t_bind *)t_alloc(fd, T_BIND, T_ALL)) ==
	    (struct t_bind *)NULL
	|| (sndcall = (struct t_call *)t_alloc(fd, T_CALL, T_ALL)) ==
	    (struct t_call *)NULL
	|| (rcvcall = (struct t_call *)t_alloc(fd, T_CALL, T_ALL)) ==
	    (struct t_call *)NULL) {
		tfaillog(fd, "t_alloc");
		TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
		TFREE(rcvcall, T_CALL);
		Uerror = SS_NO_DEVICE;
        	trace1(TR_tlicall, 1);
		return (FAIL);
	}

	/* bind */
	errno = t_errno = 0;
	if (t_bind(fd, (struct t_bind *) 0, bind_ret) < 0) {
		tfaillog(fd, "t_bind");
		TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
		TFREE(rcvcall, T_CALL);
		Uerror = SS_NO_DEVICE;
		fd_rmlock(fd);
		(void) t_close(fd);
        	trace1(TR_tlicall, 1);
		return (FAIL);
	}
	DEBUG(5, "tlicall: bound to %s\n", bind_ret->addr.buf);

	/*
	 * Prepare to connect.
	 *
	 * If address begins with "\x", "\X", "\o", or "\O",
	 * assume is hexadecimal or octal address and use stoa()
	 * to convert it.
	 *
	 * Else is usual uucico address -- only \N's left to process.
	 * Walk thru connection address, changing \N's to NULLCHARs.
	 * Note:  If a NULLCHAR must be part of the connection address,
	 * it must be overtly included in the address.  One recommended
	 * way is to do it in the Devices file, thusly:
	 *		Netname /dev/netport - - TLI \D\000
	 * bsfix() turns \000 into \N and then the loop below makes it a
	 * real, included-in-the-length null-byte.
	 *
	 * The DEBUG must print the strecpy'd address (so that
	 * non-printables will have been replaced with C escapes).
	 */

	DEBUG(5, "t_connect to addr \"%s\"\n",
		strecpy(addrbuf, dev[D_ARG], "\\"));

	if (dev[D_ARG][0] == '\\' &&
	(dev[D_ARG][1] == 'x' || dev[D_ARG][1] == 'X'
	|| dev[D_ARG][1] == 'o' || dev[D_ARG][1] == 'O')) {
		if (stoa(dev[D_ARG], &(sndcall->addr)) == (struct netbuf *)NULL) {
			DEBUG(5, "tlicall: stoa failed\n%s", "");
			logent("tlicall", "string-to-address failed");
			TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
			TFREE(rcvcall, T_CALL);
			Uerror = SS_NO_DEVICE;
			fd_rmlock(fd);
			(void) t_close(fd);
        		trace1(TR_tlicall, 1);
			return (FAIL);
		}
	} else {
		for (i = j = 0; i < BUFSIZ && dev[D_ARG][i] != NULLCHAR;
		++i, ++j) {
			if (dev[D_ARG][i] == '\\'  &&  dev[D_ARG][i+1] == 'N') {
				addrbuf[j] = NULLCHAR;
				++i;
			}
			else {
				addrbuf[j] = dev[D_ARG][i];
			}
		}
		sndcall->addr.buf = addrbuf;
		sndcall->addr.len = j;
	}

	if (setjmp(Sjbuf)) {
		DEBUG(4, "timeout tlicall\n%s", "");
		logent("tlicall", "TIMEOUT");
		TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
		TFREE(rcvcall, T_CALL);
		Uerror = SS_NO_DEVICE;
		fd_rmlock(fd);
		(void) t_close(fd);
        	trace1(TR_tlicall, 1);
		return (FAIL);
	}
	(void) signal(SIGALRM, alarmtr);
	(void) alarm(connecttime);

	/* connect to the service -- some listeners can't handle */
	/* multiple connect requests, so try it a few times */
	errno = t_errno = 0;
	for (i = 0; i < CONNECT_ATTEMPTS; ++i) {
		if (t_connect(fd, sndcall, rcvcall) == 0)
			break;
		if ((t_errno == TLOOK) && (t_look(fd) == T_DISCONNECT)) {
			t_rcvdis(fd,NULL);
			(void) alarm(0);
		} else {
			(void) alarm(0);
			tfaillog(fd, "t_connect");
			TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
			TFREE(rcvcall, T_CALL);
			Uerror = SS_DIAL_FAILED;
			fd_rmlock(fd);
			(void) t_close(fd);
        		trace1(TR_tlicall, 1);
			return (FAIL);
		}
	}
	(void) alarm(0);
	TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
	TFREE(rcvcall, T_CALL);
	if (i == CONNECT_ATTEMPTS) {
		tfaillog(fd, "t_connect");
		Uerror = SS_DIAL_FAILED;
		fd_rmlock(fd);
		(void) t_close(fd);
        	trace1(TR_tlicall, 1);
		return (FAIL);
	}
	errno = t_errno = 0;
	(void) strcpy(Dc, dev[D_CALLER]);
        trace1(TR_tlicall, 1);
	return (fd);
}
#endif /* TLI */