deb-mbse/mbcico/call.c

/*****************************************************************************
 *
 * $Id$
 * Purpose ...............: Fidonet mailer 
 *
 *****************************************************************************
 * Copyright (C) 1997-2002
 *   
 * Michiel Broek		FIDO:	2:280/2802
 * Beekmansbos 10
 * 1971 BV IJmuiden
 * the Netherlands
 *
 * This file is part of MBSE BBS.
 *
 * This BBS is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * MBSE BBS is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with MBSE BBS; see the file COPYING.  If not, write to the Free
 * Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *****************************************************************************/

#include "../config.h"
#include "../lib/libs.h"
#include "../lib/memwatch.h"
#include "../lib/structs.h"
#include "../lib/users.h"
#include "../lib/records.h"
#include "../lib/common.h"
#include "../lib/clcomm.h"
#include "../lib/dbnode.h"
#include "session.h"
#include "callstat.h"
#include "call.h"
#include "config.h"
#include "dial.h"
#include "lutil.h"
#include "portsel.h"
#include "openport.h"
#include "opentcp.h"
#include "rdoptions.h"


extern int		tcp_mode;
extern int		forcedcalls;
extern int		immediatecall;
extern char		*forcedphone;
extern char		*forcedline;
extern char		*inetaddr;



int portopen(faddr *addr)
{
    char    *p;
    int	    rc;

    if (inetaddr) {
	Syslog('d', "portopen inetaddr %s", inetaddr);
	if ((rc = opentcp(inetaddr))) {
	    Syslog('+', "Cannot connect %s", inetaddr);
	    nodeulock(addr);
	    putstatus(addr,1,ST_NOCONN);
	    return ST_NOCONN;
	}
	return 0;
    }

    if (forcedline) {
	Syslog('d', "portopen forcedline %s", forcedline);
	p = forcedline;
	strncpy(history.tty, p, 6);

	if (load_port(p)) {
	    if ((rc = openport(p, ttyinfo.portspeed))) {
		Syslog('+', "Cannot open port %s",p);
		nodeulock(addr);
		putstatus(addr, 10, ST_PORTERR);
		return ST_PORTERR;
	    }
	    return ST_PORTOK;
	} else {
	    nodeulock(addr);
	    putstatus(addr, 0, ST_PORTERR);
	    return ST_PORTERR;
	}
    }

    WriteError("No call method available, maybe missing parameters");
    return ST_PORTERR;
}



int call(faddr *addr)
{
    int		    i, rc = 1;
    struct hostent  *he;

    /*
     *  Don't call points, call their boss instead.
     */
    addr->point = 0;

    /*
     *  First check if node is locked, if not lock it immediatly
     *  or stop further waste of time and logfile space.
     */
    if (nodelock(addr)) {
	Syslog('+', "System %s is locked", ascfnode(addr, 0x1f));
	putstatus(addr, 0, ST_LOCKED);
	return ST_LOCKED;
    }

    if ((nlent = getnlent(addr)) == NULL) {
	WriteError("Cannot call %s: fatal in nodelist lookup", ascfnode(addr, 0x1f));
	putstatus(addr,0,ST_LOOKUP);
	nodeulock(addr);
	return ST_LOOKUP;
    }

    /*
     * Load the noderecord if the node is in the setup.
     */
    noderecord(addr);
    rdoptions(TRUE);

    /*
     * Fill default history info in case we get a FTS0001 session
     */
    strncpy(history.system_name, nlent->name, 35);
    strncpy(history.location, nlent->location, 35);
    strncpy(history.sysop, nlent->sysop, 35);
    history.aka.zone  = addr->zone;
    history.aka.net   = addr->net;
    history.aka.node  = addr->node;
    history.aka.point = addr->point;
    if (addr->domain && strlen(addr->domain))
	sprintf(history.aka.domain, "%s", addr->domain);

    /*
     * First see if this node can be reached over the internet and
     * that internet calls are allowed.
     */
    if (nlent->iflags && ((localoptions & (NOIBN | NOITN | NOIFC)) == 0)) {
	if (!inetaddr) {
	    Syslog('d', "Trying to find IP address...");
	    /*
	     * There is no fdn or IP address at the commandline.
	     * First check nodesetup for an override in the phone field.
	     */
	    if (strlen(nodes.phone[0])) {
		inetaddr = xstrcpy(nodes.phone[0]);
	    } else if (strlen(nodes.phone[1])) {
		inetaddr = xstrcpy(nodes.phone[1]);
	    } else {
		/*
		 * Try to find the fdn in several places in the nodelist fields.
		 */
		if ((nlent->phone != NULL) && (strncmp(nlent->phone, (char *)"000-", 4) == 0)) {
		    inetaddr = xstrcpy(nlent->phone+4);
		    for (i = 0; i < strlen(inetaddr); i++)
			if (inetaddr[i] == '-')
			    inetaddr[i] = '.';
			Syslog('d', "Got IP address from phone field");
		} else if ((he = gethostbyname(nlent->name))) {
		    inetaddr = xstrcpy(nlent->name);
		    Syslog('d', "Got hostname from nodelist system name");
		} else if ((he = gethostbyname(nlent->location))) {
		    /*
		     * A fdn at the nodelist location field is not in the specs
		     * but the real world differs from the specs.
		     */
		    inetaddr = xstrcpy(nlent->location);
		    Syslog('d', "Got hostname from nodelist location");
		}
	    }
	}

	/*
	 * If we have an internet address, set protocol
	 */
	if (inetaddr) {
	    RegTCP();
	    Syslog('d', "TCP/IP node \"%s\"", MBSE_SS(inetaddr));

	    if (tcp_mode == TCPMODE_NONE) {
		/*
		 * If protocol not forced at the commandline, get it
		 * from the nodelist. If it fails, fallback to dial.
		 * Priority IBN, IFC, ITN.
		 */
		if ((nlent->iflags & IP_IBN) && ((localoptions & NOIBN) == 0)) {
		    tcp_mode = TCPMODE_IBN;
		    Syslog('d', "TCP/IP mode set to IBN");
		} else if ((nlent->iflags & IP_IFC) && ((localoptions & NOIFC) == 0)) {
		    tcp_mode = TCPMODE_IFC;
		    Syslog('d', "TCP/IP mode set to IFC");
		} else if ((nlent->iflags & IP_ITN) && ((localoptions & NOITN) == 0)) {
		    tcp_mode = TCPMODE_ITN;
		    Syslog('d', "TCP/IP mode seto to ITN");
		} else {
		    Syslog('+', "No common TCP/IP protocols for node %s", nlent->name);
		    free(inetaddr);
		    inetaddr = NULL;
		}
	    }
	} else {
	    WriteError("No IP address, abort call");
	    rc = ST_NOCALL8;
	    putstatus(addr, 10, rc);
	    nodeulock(addr);
	    return rc;
	}
    }

    if (((nlent->oflags & OL_CM) == 0) && (!IsZMH())) {
	Syslog('?', "Warning: calling MO system outside ZMH");
    }

    if (inbound)
	free(inbound);
    inbound = xstrcpy(CFG.pinbound); /* master sessions are secure */

    /*
     * Call when:
     *  the nodelist has a phone, or phone on commandline, or TCP address given
     * and
     *  nodenumber on commandline, or node is CM and not down, hold, pvt
     * and
     *  nocall is false
     */
    if ((nlent->phone || forcedphone || inetaddr ) && 
	(forcedcalls || (((nlent->pflag & (NL_DUMMY|NL_DOWN|NL_HOLD|NL_PVT)) == 0) && ((localoptions & NOCALL) == 0)))) {
	Syslog('+', "Calling %s (%s, phone %s)",ascfnode(addr,0x1f), nlent->name,nlent->phone?nlent->phone:forcedphone);
	IsDoing("Call %s", ascfnode(addr, 0x0f));
	rc = portopen(addr);

	if ((rc == 0) && (!inetaddr)) {
	    if ((rc = dialphone(forcedphone?forcedphone:nlent->phone))) {
		Syslog('+', "Dial failed");
		nodeulock(addr);
		rc+=1; /* rc=2 - dial fail, rc=3 - could not reset */
	    } 
	}

	if (rc == 0) {
	    if (!inetaddr)
		nolocalport();

	    if (tcp_mode == TCPMODE_IBN)
		rc = session(addr,nlent,SESSION_MASTER,SESSION_BINKP,NULL);
	    else
		rc = session(addr,nlent,SESSION_MASTER,SESSION_UNKNOWN,NULL);

	    if (rc) 
		rc=abs(rc)+10;
	}

	IsDoing("Disconnect");
	if (inetaddr) {
	    closetcp();
	} else {
	    hangup();
	    localport();
	    closeport();
	    if (strlen(modem.info)) {
		/*
		 * If mode info string defined, open port again to get
		 * the aftercall information. Mostly used with ISDN.
		 */
		portopen(addr);
		aftercall();
		closeport();
	    }
	}
    } else {
	IsDoing("NoCall");
	Syslog('+', "Cannot call %s (%s, phone %s)", ascfnode(addr,0x1f),MBSE_SS(nlent->name), MBSE_SS(nlent->phone));
	if ((nlent->phone || forcedphone || inetaddr ))
	    rc=ST_NOCALL8;
	else 
	    rc=ST_NOCALL7;
	putstatus(addr, 10, rc);
	nodeulock(addr);
	return rc;
    }

    if ((rc > 10) && (rc < 20))  /* Session error */
	putstatus(addr, 5, rc);
    else if ((rc == 2) || (rc == 30))
	putstatus(addr,1,rc);
    else
	putstatus(addr,0,rc);
    return rc;
}