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/*
* Copyright (c) 1996, 1998 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id: dns.c,v 1.11 1998/03/21 00:59:45 halley Exp $";
#endif
/*
* dns.c --- this is the top-level accessor function for the dns
*/
#include "port_before.h"
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <irs.h>
#include "port_after.h"
#include "irs_p.h"
#include "hesiod.h"
#include "dns_p.h"
/* forward */
static void dns_close(struct irs_acc *);
/* public */
struct irs_acc *
irs_dns_acc(const char *options) {
struct irs_acc *acc;
struct dns_p *dns;
if (!(acc = malloc(sizeof *acc))) {
errno = ENOMEM;
return (NULL);
}
memset(acc, 0x5e, sizeof *acc);
if (!(dns = malloc(sizeof *dns))) {
errno = ENOMEM;
free(acc);
return (NULL);
}
memset(dns, 0x5e, sizeof *dns);
if (hesiod_init(&dns->hes_ctx) < 0) {
/*
* We allow the dns accessor class to initialize
* despite hesiod failing to initialize correctly,
* since dns host queries don't depend on hesiod.
*/
dns->hes_ctx = NULL;
}
acc->private = dns;
#ifdef WANT_IRS_GR
acc->gr_map = irs_dns_gr;
#else
acc->gr_map = NULL;
#endif
#ifdef WANT_IRS_PW
acc->pw_map = irs_dns_pw;
#else
acc->pw_map = NULL;
#endif
acc->sv_map = irs_dns_sv;
acc->pr_map = irs_dns_pr;
acc->ho_map = irs_dns_ho;
acc->nw_map = irs_dns_nw;
acc->ng_map = irs_nul_ng;
acc->close = dns_close;
return (acc);
}
/* methods */
static void
dns_close(struct irs_acc *this) {
struct dns_p *dns;
dns = (struct dns_p *)this->private;
if (dns->hes_ctx)
hesiod_end(dns->hes_ctx);
free(dns);
free(this);
}
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