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/*
* Copyright (c) 1996-1999 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(LINT) && !defined(CODECENTER)
static const char rcsid[] = "$Id: lcl.c,v 1.17 2001/05/29 05:49:02 marka Exp $";
#endif
/* Imports */
#include "port_before.h"
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include <isc/memcluster.h>
#include <irs.h>
#include "port_after.h"
#include "irs_p.h"
#include "lcl_p.h"
/* Forward. */
static void lcl_close(struct irs_acc *);
static struct __res_state * lcl_res_get(struct irs_acc *);
static void lcl_res_set(struct irs_acc *, struct __res_state *,
void (*)(void *));
/* Public */
struct irs_acc *
irs_lcl_acc(const char *options) {
struct irs_acc *acc;
struct lcl_p *lcl;
UNUSED(options);
if (!(acc = memget(sizeof *acc))) {
errno = ENOMEM;
return (NULL);
}
memset(acc, 0x5e, sizeof *acc);
if (!(lcl = memget(sizeof *lcl))) {
errno = ENOMEM;
free(acc);
return (NULL);
}
memset(lcl, 0x5e, sizeof *lcl);
lcl->res = NULL;
lcl->free_res = NULL;
acc->private = lcl;
#ifdef WANT_IRS_GR
acc->gr_map = irs_lcl_gr;
#else
acc->gr_map = NULL;
#endif
#ifdef WANT_IRS_PW
acc->pw_map = irs_lcl_pw;
#else
acc->pw_map = NULL;
#endif
acc->sv_map = irs_lcl_sv;
acc->pr_map = irs_lcl_pr;
acc->ho_map = irs_lcl_ho;
acc->nw_map = irs_lcl_nw;
acc->ng_map = irs_lcl_ng;
acc->res_get = lcl_res_get;
acc->res_set = lcl_res_set;
acc->close = lcl_close;
return (acc);
}
/* Methods */
static struct __res_state *
lcl_res_get(struct irs_acc *this) {
struct lcl_p *lcl = (struct lcl_p *)this->private;
if (lcl->res == NULL) {
struct __res_state *res;
res = (struct __res_state *)malloc(sizeof *res);
if (res == NULL)
return (NULL);
memset(res, 0, sizeof *res);
lcl_res_set(this, res, free);
}
if ((lcl->res->options & RES_INIT) == 0 &&
res_ninit(lcl->res) < 0)
return (NULL);
return (lcl->res);
}
static void
lcl_res_set(struct irs_acc *this, struct __res_state *res,
void (*free_res)(void *)) {
struct lcl_p *lcl = (struct lcl_p *)this->private;
if (lcl->res && lcl->free_res) {
res_nclose(lcl->res);
(*lcl->free_res)(lcl->res);
}
lcl->res = res;
lcl->free_res = free_res;
}
static void
lcl_close(struct irs_acc *this) {
struct lcl_p *lcl = (struct lcl_p *)this->private;
if (lcl) {
if (lcl->free_res)
(*lcl->free_res)(lcl->res);
memput(lcl, sizeof *lcl);
}
memput(this, sizeof *this);
}
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