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/*
* SCCS: @(#)accept.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: @(#)accept.c 1.11 98/09/01 TETware release 3.3
NAME: accept.c
PRODUCT: TETware
AUTHOR: Denis McConalogue, UniSoft Ltd.
DATE CREATED: April 1993
DESCRIPTION:
function to service a new connection indication
MODIFICATIONS:
Denis McConalogue, UniSoft Limited, September 1993
added additional error reporting code
Andrew Dingwall, UniSoft Ltd., December 1993
added malloc tracing
Andrew Dingwall, UniSoft Ltd., November 1994
updated t_alloc() structure type names in line with latest XTI spec
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 <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <fcntl.h>
#include <xti.h>
#include "dtmac.h"
#include "dtmsg.h"
#include "ptab.h"
#include "tptab_xt.h"
#include "ltoa.h"
#include "error.h"
#include "tslib.h"
#include "server.h"
#include "server_xt.h"
#include "xtilib_xt.h"
/*
** tet_ts_accept() - accept a new connection on a listening file
** descriptor and allocate a ptab entry for it
*/
void tet_ts_accept(lfd)
int lfd;
{
register struct ptab *pp;
register struct tptab *tp;
register int nfd;
int i,len, c_event;
char *p;
TRACE2(tet_Tio, 4, "accept connection on fd %s", tet_i2a(lfd));
for (i = 0; i < MAX_CONN_IND; i++) {
if (tet_calls[i] == (struct t_call *) 0)
continue;
/* allocate a proc table entry for this connection */
if ((pp = tet_ptalloc()) == (struct ptab *) 0)
return;
/* allocate a file descriptor for the endpoint on which the
connection is to be accepted */
if (!tet_tpname || !*tet_tpname) {
error(0, "no transport provider interface defined",
(char *) 0);
tet_ptfree(pp);
return;
}
if ((nfd = t_open(tet_tpname, O_RDWR, (struct t_info *) 0)) < 0) {
xt_error(t_errno, "can't open", tet_tpname);
tet_ptfree(pp);
return;
}
/* bind this endpoint to an arbitrary protocol address */
if (t_bind(nfd, (struct t_bind *) 0, (struct t_bind *) 0) < 0) {
xt_error(t_errno, "can't bind fd", tet_i2a(nfd));
(void) t_close(nfd);
tet_ptfree(pp);
return;
}
/* accept the connection */
if (t_accept(lfd, nfd, tet_calls[i]) < 0) {
/* a return of TLOOK is presumably a T_DISCONNECT or
T_CONNECT indication. By just returning we process
this event on the next poll */
if (t_errno != TLOOK) {
/* an unexpected error */
c_event = t_look(lfd);
xt_error(t_errno,"unexpected event",
tet_xtev2a(c_event));
}
(void) t_close(nfd);
tet_ptfree(pp);
return;
}
/* Store the remote (callers) address */
tp = (struct tptab *) pp->pt_tdata;
tp->tp_fd = nfd;
tp->tp_call.maxlen = tet_calls[i]->addr.maxlen;
tp->tp_call.len = tet_calls[i]->addr.len;
errno = 0;
if ((tp->tp_call.buf = (char *) malloc((size_t)tet_calls[i]->addr.maxlen)) == (char *) 0) {
error(errno, "can't malloc caller address", (char *) 0);
tet_ptfree(pp);
return;
}
TRACE2(tet_Tbuf, 6, "allocate tp_call.buf = %s",
tet_i2x(tp->tp_call.buf));
(void) memcpy(tp->tp_call.buf, tet_calls[i]->addr.buf,
(size_t)tet_calls[i]->addr.len);
TRACE3(tet_Tbuf, 6, "t_free tet_calls[%s] = %s",
tet_i2a(i), tet_i2x(tet_calls[i]));
(void) t_free((char *)tet_calls[i], T_CALL);
tet_calls[i] = (struct t_call *)0;
/* call server-specific routine to massage endpoint */
if (tet_ss_tsafteraccept(pp) < 0) {
tet_ts_dead(pp);
tet_ptfree(pp);
return;
}
/* pass the new ptab entry to the server for registration */
tet_ss_newptab(pp);
pp->pt_flags |= PF_CONNECTED;
}
}
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