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/*
* SCCS: @(#)connect.c 1.11 (98/09/01)
*
* UniSoft Ltd., London, England
*
* (C) Copyright 1993 X/Open Company Limited
*
* All rights reserved. No part of this source code may be reproduced,
* stored in a retrieval system, or transmitted, in any form or by any
* means, electronic, mechanical, photocopying, recording or otherwise,
* except as stated in the end-user licence agreement, without the prior
* permission of the copyright owners.
*
* X/Open and the 'X' symbol are trademarks of X/Open Company Limited in
* the UK and other countries.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/************************************************************************
SCCS: @(#)connect.c 1.11 98/09/01 TETware release 3.3
NAME: connect.c
PRODUCT: TETware
AUTHOR: Denis McConalogue, Unisoft Ltd.
DATE CREATED: May 1993
DESCRIPTION:
required transport-specific library interface
function to initiate connection to remote process
MODIFICATIONS:
Denis McConalogue, UniSoft Limited, September 1993
make sure client fd endpoint is not 0, 1 or 2.
Denis McConalogue, UniSoft Limited, September 1993
added additional error reporting code.
Andrew Dingwall, UniSoft Ltd., December 1993
moved disconnect stuff to a separate file
Andrew Dingwall, UniSoft Ltd., July 1998
Added support for shared API libraries.
Aaron Plattner, April 2010
Fixed warnings when compiled with GCC's -Wall option.
************************************************************************/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <xti.h>
#include "dtmac.h"
#include "dtmsg.h"
#include "ptab.h"
#include "tptab_xt.h"
#include "error.h"
#include "ltoa.h"
#include "tslib.h"
#include "server_xt.h"
#include "xtilib_xt.h"
/*
** tet_ts_connect() - make a connection to a remote process
*/
void tet_ts_connect(pp)
register struct ptab *pp;
{
register struct tptab *tp = (struct tptab *) pp->pt_tdata;
register int rc, fd, nfd, c_event;
char buf[256], *event;
struct t_info info;
struct t_call sndcall;
/* get a file descriptor for the transport endpoint */
if (!tet_tpname || !*tet_tpname) {
error(0, "no transport provider interface defined", (char *)0);
pp->pt_state = PS_DEAD;
pp->pt_flags |= PF_ATTENTION;
return;
}
if ((fd = t_open(tet_tpname, O_RDWR, &info)) < 0) {
xt_error(t_errno, "can't open transport provider", tet_tpname);
pp->pt_state = PS_DEAD;
pp->pt_flags |= PF_ATTENTION;
return;
}
/* make sure the file descriptor is not 0, 1, or 2 */
if (fd < 3) {
if ((nfd = fcntl(fd, F_DUPFD, 3)) < 3) {
error(errno, "can't dup fd", tet_i2a(fd));
pp->pt_state = PS_DEAD;
pp->pt_flags |= PF_ATTENTION;
return;
}
(void) t_close(fd);
fd = nfd;
}
/* bind this endpoint to an arbitrary protocol address */
if (t_bind(fd, (struct t_bind *)0, (struct t_bind *)0) < 0) {
xt_error(t_errno, "can't bind fd", tet_i2a(fd));
(void) t_close(fd);
pp->pt_state = PS_DEAD;
pp->pt_flags |= PF_ATTENTION;
return;
}
tp->tp_fd = fd;
/* call the server-specific connect routine to massage the
file descriptor to fill in the the network address */
if (tet_ss_tsconnect(pp) < 0) {
pp->pt_state = PS_DEAD;
pp->pt_flags |= PF_ATTENTION;
return;
}
TRACE2(tet_Tio, 4, "connect to %s", tet_addr2lname(&tp->tp_call));
sndcall.addr.maxlen = tp->tp_call.maxlen;
sndcall.addr.len = tp->tp_call.len;
sndcall.addr.buf = tp->tp_call.buf;
sndcall.opt.len = 0;
sndcall.udata.len = 0;
/* attempt the connection */
do {
errno = 0;
t_errno = 0;
rc = t_connect(fd, &sndcall, (struct t_call *)0);
} while (rc < 0 && (t_errno==TSYSERR && errno==EINTR));
if (rc < 0) {
switch(t_errno) {
case TNODATA:
if (pp->pt_flags & PF_NBIO) {
TRACE1(tet_Tio, 6, "connect in progress");
pp->pt_flags |= PF_INPROGRESS;
return;
}
/* else just fall through */
default:
event = tet_xtev2a(t_look(fd));
TRACE2(tet_Tio, 6, "connect failed:%s", event);
(void) sprintf(buf, "%s(%.*s)", "connect failed",
(int) sizeof buf - (int) strlen(event) - 17,
event);
xt_error(t_errno, buf, tet_r2a(&pp->pt_rid));
(void) t_close(fd);
pp->pt_state = PS_DEAD;
break;
}
}
else {
TRACE1(tet_Tio, 6, "connect succeeded");
pp->pt_flags |= PF_CONNECTED;
}
/* here if the connect call completed one way or the other */
pp->pt_flags |= PF_ATTENTION;
}
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