123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
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/*
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* Copyright (c) 1996 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 char rcsid[] = "$Id: getservent.c,v 1.10 1997/12/04 04:57:54 halley Exp $";
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#endif
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/* Imports */
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#include "port_before.h"
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#include <sys/types.h>
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#include <errno.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 irs_sv * init(void);
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/* Public */
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struct servent *
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getservent(void) {
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struct irs_sv *sv = init();
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if (!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(const char *name, const char *proto) {
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struct irs_sv *sv = init();
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char **sap;
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if (!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(int port, const char *proto) {
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struct irs_sv *sv = init();
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if (!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(int stayopen) {
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struct irs_sv *sv = init();
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if (!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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}
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void
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endservent() {
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struct irs_sv *sv = init();
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if (sv != NULL)
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(*sv->minimize)(sv);
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}
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/* Private */
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static struct irs_sv *
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init() {
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if (!net_data_init())
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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) {
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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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return (net_data.sv);
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}
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