mir/bind
2
0
Fork 0
mirror of https://gitlab.isc.org/isc-projects/bind9 synced 2025-08-31 22:45:39 +00:00
Code Issues Releases Wiki Activity

refactored sortlist code to make it possible to sort addresses

Browse Source 
that are not part of an rdata, as required by lwresd
This commit is contained in:
Andreas Gustafsson
2000-11-14 03:30:53 +00:00
parent 221fd7bd53
commit 50faa6daf7
1 changed files with 24 additions and 79 deletions
Download Patch File Download Diff File Expand all files Collapse all files

103
bin/named/query.c
View File

@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: query.c,v 1.148 2000/11/13 21:33:55 bwelling Exp $ */
/* $Id: query.c,v 1.149 2000/11/14 03:30:53 gson Exp $ */
#include <config.h>
@@ -44,6 +44,7 @@
#include <named/client.h>
#include <named/log.h>
#include <named/server.h>
#include <named/sortlist.h>
#include <named/xfrout.h>
#define PARTIALANSWER(c) (((c)->query.attributes & \
@@ -2218,23 +2219,12 @@ rdata_tonetaddr(dns_rdata_t *rdata, isc_netaddr_t *netaddr) {
* sortlist statement.
*/
static int
sortlist_order_2element(dns_rdata_t *rdata, void *arg) {
dns_acl_t *sortacl = (dns_acl_t *) arg;
query_sortlist_order_2element(dns_rdata_t *rdata, void *arg) {
isc_netaddr_t netaddr;
int match;
if (rdata_tonetaddr(rdata, &netaddr) != ISC_R_SUCCESS)
return (INT_MAX);
(void)dns_acl_match(&netaddr, NULL, sortacl,
&ns_g_server->aclenv,
&match, NULL);
if (match > 0)
return (match);
else if (match < 0)
return (INT_MAX - (-match));
else
return (INT_MAX / 2);
return (ns_sortlist_addrorder2(&netaddr, arg));
}
/*
@@ -2242,83 +2232,38 @@ sortlist_order_2element(dns_rdata_t *rdata, void *arg) {
* of a 1-element top-level sortlist statement.
*/
static int
sortlist_order_1element(dns_rdata_t *rdata, void *arg) {
dns_aclelement_t *matchelt = (dns_aclelement_t *) arg;
query_sortlist_order_1element(dns_rdata_t *rdata, void *arg) {
isc_netaddr_t netaddr;
if (rdata_tonetaddr(rdata, &netaddr) != ISC_R_SUCCESS)
return (INT_MAX);
if (dns_aclelement_match(&netaddr, NULL, matchelt,
&ns_g_server->aclenv,
NULL)) {
return (0);
} else {
return (INT_MAX);
}
return (ns_sortlist_addrorder1(&netaddr, arg));
}
/*
* Find the sortlist element that applies to 'client' and set up
* Find the sortlist statement that applies to 'client' and set up
* the sortlist info in in client->message appropriately.
*/
static void
setup_sortlist(ns_client_t *client) {
setup_query_sortlist(ns_client_t *client) {
isc_netaddr_t netaddr;
dns_acl_t *acl = client->view->sortlist;
unsigned int i;
if (acl == NULL)
goto dont_sort;
dns_rdatasetorderfunc_t order;
void *order_arg = NULL;
isc_netaddr_fromsockaddr(&netaddr, &client->peeraddr);
for (i = 0; i < acl->length; i++) {
/*
* 'e' refers to the current 'top level statement'
* in the sortlist (see ARM).
*/
dns_aclelement_t *e = &acl->elements[i];
dns_aclelement_t *matchelt = NULL;
dns_acl_t *inner;
if (e->type != dns_aclelementtype_nestedacl)
goto dont_sort;
inner = e->u.nestedacl;
if (inner->length < 1 || inner->length > 2)
goto dont_sort;
if (inner->elements[0].negative)
goto dont_sort;
if (dns_aclelement_match(&netaddr, client->signer,
&inner->elements[0],
&ns_g_server->aclenv,
&matchelt)) {
if (inner->length == 2) {
dns_aclelement_t *elt1 = &inner->elements[1];
if (elt1->type != dns_aclelementtype_nestedacl)
goto dont_sort;
dns_message_setsortorder(client->message,
sortlist_order_2element,
elt1->u.nestedacl);
return;
} else {
INSIST(matchelt != NULL);
dns_message_setsortorder(client->message,
sortlist_order_1element,
matchelt);
return;
}
}
switch (setup_sortlist(client->view->sortlist,
&netaddr, &order_arg)) {
case NS_SORTLISTTYPE_1ELEMENT:
order = query_sortlist_order_1element;
break;
case NS_SORTLISTTYPE_2ELEMENT:
order = query_sortlist_order_2element;
break;
case NS_SORTLISTTYPE_NONE:
order = NULL;
break;
}
/* No match; don't sort. */
dont_sort:
dns_message_setsortorder(client->message, NULL, NULL);
return;
dns_message_setsortorder(client->message, order, order_arg);
}
static void
@@ -3275,7 +3220,7 @@ query_find(ns_client_t *client, dns_fetchevent_t *event) {
* auth-nxdomain config option says so, then render and
* send the response.
*/
setup_sortlist(client);
setup_query_sortlist(client);
if (client->message->rcode == dns_rcode_nxdomain &&
client->view->auth_nxdomain == ISC_TRUE)