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/*
* Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 2000, 2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or 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 ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC 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.
*/
/* $Id: listenlist.c,v 1.14 2007/06/19 23:46:59 tbox Exp $ */
/*! \file */
#include <config.h>
#include <isc/mem.h>
#include <isc/util.h>
#include <dns/acl.h>
#include <named/listenlist.h>
static void
destroy(ns_listenlist_t *list);
isc_result_t
ns_listenelt_create(isc_mem_t *mctx, in_port_t port,
dns_acl_t *acl, ns_listenelt_t **target)
{
ns_listenelt_t *elt = NULL;
REQUIRE(target != NULL && *target == NULL);
elt = isc_mem_get(mctx, sizeof(*elt));
if (elt == NULL)
return (ISC_R_NOMEMORY);
elt->mctx = mctx;
ISC_LINK_INIT(elt, link);
elt->port = port;
elt->acl = acl;
*target = elt;
return (ISC_R_SUCCESS);
}
void
ns_listenelt_destroy(ns_listenelt_t *elt) {
if (elt->acl != NULL)
dns_acl_detach(&elt->acl);
isc_mem_put(elt->mctx, elt, sizeof(*elt));
}
isc_result_t
ns_listenlist_create(isc_mem_t *mctx, ns_listenlist_t **target) {
ns_listenlist_t *list = NULL;
REQUIRE(target != NULL && *target == NULL);
list = isc_mem_get(mctx, sizeof(*list));
if (list == NULL)
return (ISC_R_NOMEMORY);
list->mctx = mctx;
list->refcount = 1;
ISC_LIST_INIT(list->elts);
*target = list;
return (ISC_R_SUCCESS);
}
static void
destroy(ns_listenlist_t *list) {
ns_listenelt_t *elt, *next;
for (elt = ISC_LIST_HEAD(list->elts);
elt != NULL;
elt = next)
{
next = ISC_LIST_NEXT(elt, link);
ns_listenelt_destroy(elt);
}
isc_mem_put(list->mctx, list, sizeof(*list));
}
void
ns_listenlist_attach(ns_listenlist_t *source, ns_listenlist_t **target) {
INSIST(source->refcount > 0);
source->refcount++;
*target = source;
}
void
ns_listenlist_detach(ns_listenlist_t **listp) {
ns_listenlist_t *list = *listp;
INSIST(list->refcount > 0);
list->refcount--;
if (list->refcount == 0)
destroy(list);
*listp = NULL;
}
isc_result_t
ns_listenlist_default(isc_mem_t *mctx, in_port_t port,
isc_boolean_t enabled, ns_listenlist_t **target)
{
isc_result_t result;
dns_acl_t *acl = NULL;
ns_listenelt_t *elt = NULL;
ns_listenlist_t *list = NULL;
REQUIRE(target != NULL && *target == NULL);
if (enabled)
result = dns_acl_any(mctx, &acl);
else
result = dns_acl_none(mctx, &acl);
if (result != ISC_R_SUCCESS)
goto cleanup;
result = ns_listenelt_create(mctx, port, acl, &elt);
if (result != ISC_R_SUCCESS)
goto cleanup_acl;
result = ns_listenlist_create(mctx, &list);
if (result != ISC_R_SUCCESS)
goto cleanup_listenelt;
ISC_LIST_APPEND(list->elts, elt, link);
*target = list;
return (ISC_R_SUCCESS);
cleanup_listenelt:
ns_listenelt_destroy(elt);
cleanup_acl:
dns_acl_detach(&acl);
cleanup:
return (result);
}
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