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getaddrbyname now does search path processing in the server.

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This commit is contained in:
Brian Wellington 2000-10-28 00:35:57 +00:00
parent eb716d8c2e
commit 686026894b
2 changed files with 70 additions and 27 deletions
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6
bin/named/include/named/lwdclient.h
View file

@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: lwdclient.h,v 1.7 2000/10/12 20:45:19 bwelling Exp $ */
/* $Id: lwdclient.h,v 1.8 2000/10/28 00:35:56 bwelling Exp $ */
#ifndef NAMED_LWDCLIENT_H
#define NAMED_LWDCLIENT_H 1
@ -31,6 +31,8 @@
#include <lwres/lwres.h>
#include <named/lwsearch.h>
#define LWRD_EVENTCLASS ISC_EVENTCLASS(4242)
#define LWRD_SHUTDOWN (LWRD_EVENTCLASS + 0x0001)
@ -66,7 +68,9 @@ struct ns_lwdclient {
dns_adbfind_t *v4find;
dns_adbfind_t *v6find;
unsigned int find_wanted; /* Addresses we want */
dns_fixedname_t query_name;
dns_fixedname_t target_name;
ns_lwsearchctx_t searchctx;
lwres_gabnresponse_t gabn;
/*

91
bin/named/lwdgabn.c
View file

@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: lwdgabn.c,v 1.7 2000/10/12 20:45:14 bwelling Exp $ */
/* $Id: lwdgabn.c,v 1.8 2000/10/28 00:35:57 bwelling Exp $ */
#include <config.h>
@ -29,13 +29,17 @@
#include <named/types.h>
#include <named/lwdclient.h>
#include <named/lwresd.h>
#include <named/lwsearch.h>
#define NEED_V4(c) ((((c)->find_wanted & LWRES_ADDRTYPE_V4) != 0) \
&& ((c)->v4find == NULL))
#define NEED_V6(c) ((((c)->find_wanted & LWRES_ADDRTYPE_V6) != 0) \
&& ((c)->v6find == NULL))
static void start_find(ns_lwdclient_t *);
static isc_result_t start_find(ns_lwdclient_t *);
static void restart_find(ns_lwdclient_t *);
static void init_gabn(ns_lwdclient_t *);
/*
* Destroy any finds. This can be used to "start over from scratch" and
@ -43,20 +47,16 @@ static void start_find(ns_lwdclient_t *);
*/
static void
cleanup_gabn(ns_lwdclient_t *client) {
dns_adbfind_t *v4;
ns_lwdclient_log(50, "cleaning up client %p", client);
v4 = client->v4find;
if (client->v4find != NULL)
dns_adb_destroyfind(&client->v4find);
if (client->v6find != NULL) {
if (client->v6find == v4)
if (client->v6find == client->v4find)
client->v6find = NULL;
else
dns_adb_destroyfind(&client->v6find);
}
if (client->v4find != NULL)
dns_adb_destroyfind(&client->v4find);
}
static void
@ -150,6 +150,23 @@ generate_reply(ns_lwdclient_t *client) {
if (client->v6find != NULL)
setup_addresses(client, client->v6find, DNS_ADBFIND_INET6);
/*
* If there are no addresses, try the next element in the search
* path, if there are any more. Otherwise, fall through into
* the error handling code below.
*/
if (client->gabn.naddrs == 0) {
do {
result = ns_lwsearchctx_next(&client->searchctx);
if (result == ISC_R_SUCCESS) {
cleanup_gabn(client);
result = start_find(client);
if (result == ISC_R_SUCCESS)
return;
}
} while (result == ISC_R_SUCCESS);
}
/*
* Render the packet.
*/
@ -246,14 +263,19 @@ static isc_result_t
store_realname(ns_lwdclient_t *client) {
isc_buffer_t b;
isc_result_t result;
dns_name_t *tname;
b = client->recv_buffer;
tname = dns_fixedname_name(&client->target_name);
result = ns_lwsearchctx_current(&client->searchctx, tname);
if (result != ISC_R_SUCCESS)
return (result);
/*
* Render the new name to the buffer.
*/
result = dns_name_totext(dns_fixedname_name(&client->target_name),
ISC_TRUE, &client->recv_buffer);
result = dns_name_totext(tname, ISC_TRUE, &client->recv_buffer);
if (result != ISC_R_SUCCESS)
return (result);
@ -319,7 +341,7 @@ process_gabn_finddone(isc_task_t *task, isc_event_t *ev) {
* it.
*/
if (evtype == DNS_EVENT_ADBMOREADDRESSES) {
start_find(client);
restart_find(client);
return;
}
@ -331,7 +353,7 @@ process_gabn_finddone(isc_task_t *task, isc_event_t *ev) {
}
static void
start_find(ns_lwdclient_t *client) {
restart_find(ns_lwdclient_t *client) {
unsigned int options;
isc_result_t result;
isc_boolean_t claimed;
@ -451,6 +473,23 @@ start_find(ns_lwdclient_t *client) {
generate_reply(client);
}
static isc_result_t
start_find(ns_lwdclient_t *client) {
isc_result_t result;
/*
* Initialize the real name and alias arrays in the reply we're
* going to build up.
*/
init_gabn(client);
result = store_realname(client);
if (result != ISC_R_SUCCESS)
return (result);
restart_find(client);
return (ISC_R_SUCCESS);
}
static void
init_gabn(ns_lwdclient_t *client) {
@ -510,10 +549,12 @@ void
ns_lwdclient_processgabn(ns_lwdclient_t *client, lwres_buffer_t *b) {
isc_result_t result;
lwres_gabnrequest_t *req;
ns_lwdclientmgr_t *cm;
isc_buffer_t namebuf;
REQUIRE(NS_LWDCLIENT_ISRECVDONE(client));
cm = client->clientmgr;
req = NULL;
result = lwres_gabnrequest_parse(client->clientmgr->lwctx,
@ -525,10 +566,16 @@ ns_lwdclient_processgabn(ns_lwdclient_t *client, lwres_buffer_t *b) {
isc_buffer_add(&namebuf, req->namelen);
dns_fixedname_init(&client->target_name);
result = dns_name_fromtext(dns_fixedname_name(&client->target_name),
&namebuf, dns_rootname, ISC_FALSE, NULL);
dns_fixedname_init(&client->query_name);
result = dns_name_fromtext(dns_fixedname_name(&client->query_name),
&namebuf, NULL, ISC_FALSE, NULL);
if (result != ISC_R_SUCCESS)
goto out;
ns_lwsearchctx_init(&client->searchctx,
cm->lwresd->search,
dns_fixedname_name(&client->query_name),
cm->lwresd->ndots);
ns_lwsearchctx_first(&client->searchctx);
client->find_wanted = req->addrtypes;
ns_lwdclient_log(50, "client %p looking for addrtypes %08x",
@ -539,20 +586,12 @@ ns_lwdclient_processgabn(ns_lwdclient_t *client, lwres_buffer_t *b) {
*/
lwres_gabnrequest_free(client->clientmgr->lwctx, &req);
/*
* Initialize the real name and alias arrays in the reply we're
* going to build up.
*/
init_gabn(client);
result = store_realname(client);
if (result != ISC_R_SUCCESS)
goto out;
/*
* Start the find.
*/
start_find(client);
result = start_find(client);
if (result != ISC_R_SUCCESS)
goto out;
return;