109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/* $NetBSD: getservbyport_r.c,v 1.6 2007/03/21 02:35:39 christos Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1983, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static char sccsid[] = "@(#)getservbyport.c 8.1 (Berkeley) 6/4/93";
|
|
#else
|
|
__RCSID("$NetBSD: getservbyport_r.c,v 1.6 2007/03/21 02:35:39 christos Exp $");
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include "namespace.h"
|
|
#include <stdio.h>
|
|
#include <netdb.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <db.h>
|
|
|
|
#include "servent.h"
|
|
|
|
#ifdef __weak_alias
|
|
__weak_alias(getservbyport_r,_getservbyport_r)
|
|
#endif
|
|
|
|
static struct servent *
|
|
_servent_getbyport(struct servent_data *sd, struct servent *sp, int port,
|
|
const char *proto)
|
|
{
|
|
if (sd->db == NULL)
|
|
return NULL;
|
|
|
|
if (sd->flags & _SV_DB) {
|
|
char buf[BUFSIZ];
|
|
DBT key, data;
|
|
DB *db = sd->db;
|
|
key.data = buf;
|
|
|
|
port = htons(port);
|
|
if (proto == NULL)
|
|
key.size = snprintf(buf, sizeof(buf), "\377%d", port);
|
|
else
|
|
key.size = snprintf(buf, sizeof(buf), "\377%d/%s", port,
|
|
proto);
|
|
key.size++;
|
|
|
|
if ((*db->get)(db, &key, &data, 0) != 0)
|
|
return NULL;
|
|
|
|
if ((*db->get)(db, &data, &key, 0) != 0)
|
|
return NULL;
|
|
|
|
if (sd->line)
|
|
free(sd->line);
|
|
|
|
sd->line = strdup(key.data);
|
|
return _servent_parseline(sd, sp);
|
|
} else {
|
|
while (_servent_getline(sd) != -1) {
|
|
if (_servent_parseline(sd, sp) == NULL)
|
|
continue;
|
|
if (sp->s_port != port)
|
|
continue;
|
|
if (proto == NULL || strcmp(sp->s_proto, proto) == 0)
|
|
return sp;
|
|
}
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
struct servent *
|
|
getservbyport_r(int port, const char *proto, struct servent *sp,
|
|
struct servent_data *sd)
|
|
{
|
|
setservent_r(sd->flags & _SV_STAYOPEN, sd);
|
|
sp = _servent_getbyport(sd, sp, port, proto);
|
|
if (!(sd->flags & _SV_STAYOPEN))
|
|
_servent_close(sd);
|
|
return sp;
|
|
}
|