103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
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/*
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* Copyright (c) 1996, 1998 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(LIBC_SCCS) && !defined(lint)
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static const char rcsid[] = "$Id: dns.c,v 1.11 1998/03/21 00:59:45 halley Exp $";
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#endif
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/*
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* dns.c --- this is the top-level accessor function for the dns
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*/
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#include "port_before.h"
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <irs.h>
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#include "port_after.h"
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#include "irs_p.h"
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#include "hesiod.h"
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#include "dns_p.h"
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/* forward */
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static void dns_close(struct irs_acc *);
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/* public */
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struct irs_acc *
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irs_dns_acc(const char *options) {
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struct irs_acc *acc;
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struct dns_p *dns;
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if (!(acc = malloc(sizeof *acc))) {
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errno = ENOMEM;
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return (NULL);
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}
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memset(acc, 0x5e, sizeof *acc);
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if (!(dns = malloc(sizeof *dns))) {
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errno = ENOMEM;
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free(acc);
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return (NULL);
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}
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memset(dns, 0x5e, sizeof *dns);
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if (hesiod_init(&dns->hes_ctx) < 0) {
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/*
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* We allow the dns accessor class to initialize
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* despite hesiod failing to initialize correctly,
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* since dns host queries don't depend on hesiod.
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*/
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dns->hes_ctx = NULL;
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}
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acc->private = dns;
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#ifdef WANT_IRS_GR
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acc->gr_map = irs_dns_gr;
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#else
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acc->gr_map = NULL;
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#endif
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#ifdef WANT_IRS_PW
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acc->pw_map = irs_dns_pw;
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#else
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acc->pw_map = NULL;
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#endif
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acc->sv_map = irs_dns_sv;
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acc->pr_map = irs_dns_pr;
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acc->ho_map = irs_dns_ho;
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acc->nw_map = irs_dns_nw;
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acc->ng_map = irs_nul_ng;
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acc->close = dns_close;
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return (acc);
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}
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/* methods */
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static void
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dns_close(struct irs_acc *this) {
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struct dns_p *dns;
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dns = (struct dns_p *)this->private;
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if (dns->hes_ctx)
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hesiod_end(dns->hes_ctx);
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free(dns);
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free(this);
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}
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