179 lines
4.1 KiB
C
179 lines
4.1 KiB
C
/* $NetBSD: getservent.c,v 1.1.1.1 1999/11/20 18:54:09 veego Exp $ */
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/*
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* Copyright (c) 1996,1999 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#if !defined(LINT) && !defined(CODECENTER)
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static const char rcsid[] = "Id: getservent.c,v 1.16 1999/10/13 16:39:31 vixie Exp";
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#endif
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/* Imports */
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#include "port_before.h"
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#if !defined(__BIND_NOSTATIC)
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <arpa/nameser.h>
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#include <errno.h>
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#include <resolv.h>
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#include <stdio.h>
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#include <irs.h>
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#include "port_after.h"
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#include "irs_data.h"
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/* Forward */
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static struct net_data *init(void);
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/* Public */
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struct servent *
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getservent(void) {
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struct net_data *net_data = init();
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return (getservent_p(net_data));
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}
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struct servent *
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getservbyname(const char *name, const char *proto) {
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struct net_data *net_data = init();
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return (getservbyname_p(name, proto, net_data));
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}
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struct servent *
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getservbyport(int port, const char *proto) {
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struct net_data *net_data = init();
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return (getservbyport_p(port, proto, net_data));
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}
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void
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setservent(int stayopen) {
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struct net_data *net_data = init();
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setservent_p(stayopen, net_data);
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}
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void
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endservent() {
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struct net_data *net_data = init();
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endservent_p(net_data);
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}
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/* Shared private. */
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struct servent *
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getservent_p(struct net_data *net_data) {
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struct irs_sv *sv;
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if (!net_data || !(sv = net_data->sv))
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return (NULL);
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net_data->sv_last = (*sv->next)(sv);
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return (net_data->sv_last);
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}
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struct servent *
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getservbyname_p(const char *name, const char *proto,
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struct net_data *net_data) {
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struct irs_sv *sv;
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char **sap;
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if (!net_data || !(sv = net_data->sv))
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return (NULL);
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if (net_data->sv_stayopen && net_data->sv_last)
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if (!proto || !strcmp(net_data->sv_last->s_proto, proto)) {
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if (!strcmp(net_data->sv_last->s_name, name))
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return (net_data->sv_last);
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for (sap = net_data->sv_last->s_aliases;
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sap && *sap; sap++)
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if (!strcmp(name, *sap))
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return (net_data->sv_last);
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}
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net_data->sv_last = (*sv->byname)(sv, name, proto);
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if (!net_data->sv_stayopen)
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endservent();
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return (net_data->sv_last);
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}
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struct servent *
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getservbyport_p(int port, const char *proto, struct net_data *net_data) {
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struct irs_sv *sv;
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if (!net_data || !(sv = net_data->sv))
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return (NULL);
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if (net_data->sv_stayopen && net_data->sv_last)
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if (port == net_data->sv_last->s_port &&
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( !proto ||
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!strcmp(net_data->sv_last->s_proto, proto)))
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return (net_data->sv_last);
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net_data->sv_last = (*sv->byport)(sv, port, proto);
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return (net_data->sv_last);
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}
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void
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setservent_p(int stayopen, struct net_data *net_data) {
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struct irs_sv *sv;
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if (!net_data || !(sv = net_data->sv))
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return;
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(*sv->rewind)(sv);
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net_data->sv_stayopen = (stayopen != 0);
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if (stayopen == 0)
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net_data_minimize(net_data);
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}
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void
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endservent_p(struct net_data *net_data) {
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struct irs_sv *sv;
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if ((net_data != NULL) && ((sv = net_data->sv) != NULL))
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(*sv->minimize)(sv);
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}
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/* Private */
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static struct net_data *
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init() {
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struct net_data *net_data;
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if (!(net_data = net_data_init(NULL)))
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goto error;
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if (!net_data->sv) {
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net_data->sv = (*net_data->irs->sv_map)(net_data->irs);
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if (!net_data->sv || !net_data->res) {
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error:
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errno = EIO;
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return (NULL);
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}
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(*net_data->sv->res_set)(net_data->sv, net_data->res, NULL);
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}
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return (net_data);
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}
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#endif /*__BIND_NOSTATIC*/
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