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bind9.18/SOURCES/bind-9.18-CVE-2026-5946.patch
AlmaLinux RelEng Bot ed6530c591 import Oracle_OSS bind9.18-9.18.29-14.el9_8.2
2026-06-24 17:39:30 -04:00

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From fe521f0f5208a0b79020fdb7d00779f3e46d05ab Mon Sep 17 00:00:00 2001
From: Evan Hunt <each@isc.org>
Date: Tue, 3 Mar 2026 14:00:38 -0800
Subject: [PATCH] Disable recursion for non-IN classes
Force recursion off, and set allow-recursion/allow-recursion-on ACLs
to none, for views with a class other than IN. Log a configuration
warning if recursion is explicitly enabled for a non-IN view.
This addresses YWH-PGM40640-74 and YWH-PGM40640-75 by preventing any
attempt at recursive processing in a class-CHAOS view, ensuring that
server addresses used for recursive queries and received in recursive
responses are of the expected format.
Fixes: isc-projects/bind9#5780
Fixes: isc-projects/bind9#5781
(cherry picked from commit 7becff1a14684a68208c92b3b0315c045c05ad75)
(cherry picked from commit 401a6374b026afb76a7b22acc4a1402d21a7e77b)
Disable UPDATE and NOTIFY for non-IN classes
Return NOTIMP for UPDATE and NOTIFY requests received for views with a
class other than IN. Only QUERY is now supported for non-IN views such
as CHAOS.
When running dns dns_rdata_tostruct() with types that are only defined
for class IN, ensure that the class is correct before proceeding.
Add an assertion that any zone being updated is of class IN. (Note
that previously, a DLZ zone could have its class value set incorrectly
to NONE; this has been fixed.)
This addresses YWH-PGM40640-70 and YWH-PGM40640-73 (as well as any
similar problems that might have occurred in the future) by minimizing
the code paths that can be reached by rdata classes other than IN, so it
is safe for the implementation to assume that rdatatypes that are only
defined for class IN, such as SVCB or WKS, have been parsed and
validated, and not accepted as unknown/opaque data.
Fixes: isc-projects/bind9#5777
Fixes: isc-projects/bind9#5779
(cherry picked from commit a6d8e330ed6cf0021bff3f00aa1dc7a296f5aec0)
(cherry picked from commit 04092ed136c8a6db2b1059dcd32693d57a7bdc24)
Validate DNS message CLASS early in request processing
Reject requests with unsupported or misused CLASS values before
further processing. Only IN, CH, HS, RESERVED0 (for DNS Cookies),
ANY (for TKEY negotiation), and NONE (for DNS UPDATE) are accepted;
all other classes return NOTIMP. Misuse of NONE or ANY outside
their allowed contexts returns FORMERR.
This adds further protection against bugs of the same general class
as YWH-PGM40640-70 and YWH-PGM40640-73.
(cherry picked from commit 0a687451505037e9f9a850c9cb113aed4995b03f)
(cherry picked from commit b247dbb3506ef628a683d184fbc6a99fad45ed94)
Reject meta-classes in UPDATE and NOTIFY messages
NOTIFY and UPDATE messages must specify a data class in the
QUESTION/ZONE section. NONE and ANY are meta-classes and not
appropriate here. Return FORMERR if either is used.
Rejecting messages with a query class of NONE addresses YWH-PGM40640-72,
YWH-PGM40640-82, and YWH-PGM40640-83. Rejecting messages with a query
class of ANY addresses YWH-PGM40640-87, YWH-PGM40640-88, and
YWH-PGM40640-117.
Fixes: isc-projects/bind9#5778
Fixes: isc-projects/bind9#5782
Fixes: isc-projects/bind9#5783
Fixes: isc-projects/bind9#5797
Fixes: isc-projects/bind9#5798
Fixes: isc-projects/bind9#5853
(cherry picked from commit c66a1b1e1bfd6c79d7b9bc8d4a59e69f4faa1563)
(cherry picked from commit 185c10981b941bfa5b753b3624b6e11ccca8737f)
Skip "deny-answer-address" for non-IN addresses
Ensure that we don't attempt an ACL match for answer addresses
when handling a class-CHAOS zone. This is an additional line of
defense for YWH-PGM40640-74.
(cherry picked from commit e62673c765b52307c800e86f0185fe52b573c145)
(cherry picked from commit 772d1d5f905c819d7155e76a08c33218bfcc973e)
Test UPDATE behavior in CHAOS and other non-IN classes
Send various UPDATE requests that are known to have caused
crashes previously with deliberately misconfigured non-IN
zones; confirm that UPDATE is not processed.
(cherry picked from commit e2f7ba2a4b6e7e5dba2fb1a2c9b2f0323e9a88be)
(cherry picked from commit e5b3149b70ed24f7590b6bc08aad4492a00c2022)
---
bin/named/server.c | 42 ++++++-------------
bin/tests/system/allow-query/tests.sh | 2 +-
bin/tests/system/checkconf/tests.sh | 1 +
bin/tests/system/resolver/tests.sh | 8 ++--
bin/tests/system/unknown/tests.sh | 17 +++++---
lib/bind9/check.c | 22 ++++++++--
lib/dns/adb.c | 2 +-
lib/dns/message.c | 11 +++++
lib/dns/resolver.c | 7 ++++
lib/ns/client.c | 59 +++++++++++++++++++++++----
lib/ns/update.c | 41 ++++++++++---------
11 files changed, 143 insertions(+), 69 deletions(-)
diff --git a/bin/named/server.c b/bin/named/server.c
index dd0b859..ee6a6ed 100644
--- a/bin/named/server.c
+++ b/bin/named/server.c
@@ -1901,10 +1901,12 @@ dlzconfigure_callback(dns_view_t *view, dns_dlzdb_t *dlzdb, dns_zone_t *zone) {
dns_rdataclass_t zclass = view->rdclass;
isc_result_t result;
+ dns_zone_setclass(zone, zclass);
result = dns_zonemgr_managezone(named_g_server->zonemgr, zone);
if (result != ISC_R_SUCCESS) {
return (result);
}
+
dns_zone_setstats(zone, named_g_server->zonestats);
return (named_zone_configure_writeable_dlz(dlzdb, zone, zclass,
@@ -4430,6 +4432,7 @@ configure_view(dns_view_t *view, dns_viewlist_t *viewlist, cfg_obj_t *config,
obj = NULL;
result = named_config_get(maps, "max-cache-size", &obj);
INSIST(result == ISC_R_SUCCESS);
+
/*
* If "-T maxcachesize=..." is in effect, it overrides any other
* "max-cache-size" setting found in configuration, either implicit or
@@ -5140,34 +5143,15 @@ configure_view(dns_view_t *view, dns_viewlist_t *viewlist, cfg_obj_t *config,
}
/*
- * We have default hints for class IN if we need them.
+ * We have default root hints for class IN if we need them.
+ * Each view gets its own rootdb so a priming response only
+ * writes into that view's copy. Other classes don't support
+ * recursion and don't need hints.
*/
if (view->rdclass == dns_rdataclass_in && view->hints == NULL) {
dns_view_sethints(view, named_g_server->in_roothints);
}
- /*
- * If we still have no hints, this is a non-IN view with no
- * "hints zone" configured. Issue a warning, except if this
- * is a root server. Root servers never need to consult
- * their hints, so it's no point requiring users to configure
- * them.
- */
- if (view->hints == NULL) {
- dns_zone_t *rootzone = NULL;
- (void)dns_view_findzone(view, dns_rootname, &rootzone);
- if (rootzone != NULL) {
- dns_zone_detach(&rootzone);
- need_hints = false;
- }
- if (need_hints) {
- isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
- NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
- "no root hints for view '%s'",
- view->name);
- }
- }
-
/*
* Configure the view's transports (DoT/DoH)
*/
@@ -5295,7 +5279,8 @@ configure_view(dns_view_t *view, dns_viewlist_t *viewlist, cfg_obj_t *config,
obj = NULL;
result = named_config_get(maps, "recursion", &obj);
INSIST(result == ISC_R_SUCCESS);
- view->recursion = cfg_obj_asboolean(obj);
+ view->recursion = (view->rdclass == dns_rdataclass_in &&
+ cfg_obj_asboolean(obj));
obj = NULL;
result = named_config_get(maps, "qname-minimization", &obj);
@@ -5395,14 +5380,13 @@ configure_view(dns_view_t *view, dns_viewlist_t *viewlist, cfg_obj_t *config,
CHECK(configure_view_acl(vconfig, config, NULL, "allow-query-cache-on",
NULL, actx, named_g_mctx, &view->cacheonacl));
- if (strcmp(view->name, "_bind") != 0 &&
- view->rdclass != dns_rdataclass_chaos)
- {
- /* named.conf only */
+ if (view->rdclass != dns_rdataclass_in) {
+ dns_acl_none(named_g_mctx, &view->recursionacl);
+ dns_acl_none(named_g_mctx, &view->recursiononacl);
+ } else {
CHECK(configure_view_acl(vconfig, config, NULL,
"allow-recursion", NULL, actx,
named_g_mctx, &view->recursionacl));
- /* named.conf only */
CHECK(configure_view_acl(vconfig, config, NULL,
"allow-recursion-on", NULL, actx,
named_g_mctx, &view->recursiononacl));
diff --git a/bin/tests/system/allow-query/tests.sh b/bin/tests/system/allow-query/tests.sh
index e59a1ab..46d2a78 100644
--- a/bin/tests/system/allow-query/tests.sh
+++ b/bin/tests/system/allow-query/tests.sh
@@ -703,7 +703,7 @@ $DIG -p ${PORT} @10.53.1.2 d.normal.example a >dig.out.ns3.4.$n || ret=1
grep 'recursion requested but not available' dig.out.ns3.4.$n >/dev/null || ret=1
grep 'status: REFUSED' dig.out.ns3.4.$n >/dev/null || ret=1
grep 'EDE: 18 (Prohibited)' dig.out.ns3.4.$n >/dev/null || ret=1
-nextpart ns3/named.run | grep 'allow-recursion-on did not match' >/dev/null || ret=1
+nextpart ns3/named.run | grep 'allow-query-cache-on did not match' >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
diff --git a/bin/tests/system/checkconf/tests.sh b/bin/tests/system/checkconf/tests.sh
index dc7854b..c320c18 100644
--- a/bin/tests/system/checkconf/tests.sh
+++ b/bin/tests/system/checkconf/tests.sh
@@ -543,6 +543,7 @@ $CHECKCONF -l good.conf \
| grep -v "is not implemented" \
| grep -v "is not recommended" \
| grep -v "no longer exists" \
+ | grep -v "recursion will be disabled" \
| grep -v "is obsolete" >checkconf.out$n || ret=1
diff good.zonelist checkconf.out$n >diff.out$n || ret=1
if [ $ret -ne 0 ]; then
diff --git a/bin/tests/system/resolver/tests.sh b/bin/tests/system/resolver/tests.sh
index f4831ca..630dfe2 100755
--- a/bin/tests/system/resolver/tests.sh
+++ b/bin/tests/system/resolver/tests.sh
@@ -948,10 +948,12 @@ if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
n=$((n + 1))
-echo_i "checking NXDOMAIN is returned when querying non existing domain in CH class ($n)"
+echo_i "checking REFUSED is returned when querying non existing domain in CH class ($n)"
ret=0
-dig_with_opts @10.53.0.1 id.hostname txt ch >dig.ns1.out.${n} || ret=1
-grep "status: NXDOMAIN" dig.ns1.out.${n} >/dev/null || ret=1
+dig_with_opts @10.53.0.1 hostname.chaostest txt ch >dig.ns1.out.1.${n} || ret=1
+grep "status: NOERROR" dig.ns1.out.1.${n} >/dev/null || ret=1
+dig_with_opts @10.53.0.1 id.hostname txt ch >dig.ns1.out.2.${n} || ret=1
+grep "status: REFUSED" dig.ns1.out.2.${n} >/dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status + ret))
diff --git a/bin/tests/system/unknown/tests.sh b/bin/tests/system/unknown/tests.sh
index eb61f21..cbc2943 100644
--- a/bin/tests/system/unknown/tests.sh
+++ b/bin/tests/system/unknown/tests.sh
@@ -25,6 +25,11 @@ dig_cmd() {
"$DIG" $DIGOPTS "$@" | grep -v '^;'
}
+dig_full() {
+ # shellcheck disable=SC2086
+ "$DIG" $DIGOPTS "$@"
+}
+
n=$((n + 1))
echo_i "querying for various representations of an IN A record ($n)"
for i in 1 2 3 4 5 6 7 8 9 10 11 12; do
@@ -81,8 +86,8 @@ n=$((n + 1))
echo_i "querying for various representations of a CLASS10 TYPE1 record ($n)"
for i in 1 2; do
ret=0
- dig_cmd +short @10.53.0.1 a$i.example a class10 >dig.out.$i.test$n
- echo '\# 4 0A000001' | diff - dig.out.$i.test$n || ret=1
+ dig_full @10.53.0.1 a$i.example a class10 >dig.out.$i.test$n
+ grep -q "NOTIMP" dig.out.$i.test$n || ret=1
if [ $ret != 0 ]; then
echo_i "#$i failed"
fi
@@ -93,8 +98,8 @@ n=$((n + 1))
echo_i "querying for various representations of a CLASS10 TXT record ($n)"
for i in 1 2 3 4; do
ret=0
- dig_cmd +short @10.53.0.1 txt$i.example txt class10 >dig.out.$i.test$n
- echo '"hello"' | diff - dig.out.$i.test$n || ret=1
+ dig_full @10.53.0.1 txt$i.example txt class10 >dig.out.$i.test$n
+ grep -q "NOTIMP" dig.out.$i.test$n || ret=1
if [ $ret != 0 ]; then
echo_i "#$i failed"
fi
@@ -105,8 +110,8 @@ n=$((n + 1))
echo_i "querying for various representations of a CLASS10 TYPE123 record ($n)"
for i in 1 2; do
ret=0
- dig_cmd +short @10.53.0.1 unk$i.example type123 class10 >dig.out.$i.test$n
- echo '\# 1 00' | diff - dig.out.$i.test$n || ret=1
+ dig_full @10.53.0.1 unk$i.example type123 class10 >dig.out.$i.test$n
+ grep -q "NOTIMP" dig.out.$i.test$n || ret=1
if [ $ret != 0 ]; then
echo_i "#$i failed"
fi
diff --git a/lib/bind9/check.c b/lib/bind9/check.c
index 962872b..8bb06a2 100644
--- a/lib/bind9/check.c
+++ b/lib/bind9/check.c
@@ -2789,13 +2789,17 @@ check_mirror_zone_notify(const cfg_obj_t *zoptions, const char *znamestr,
*/
static bool
check_recursion(const cfg_obj_t *config, const cfg_obj_t *voptions,
- const cfg_obj_t *goptions, isc_log_t *logctx,
- cfg_aclconfctx_t *actx, isc_mem_t *mctx) {
+ dns_rdataclass_t vclass, const cfg_obj_t *goptions,
+ isc_log_t *logctx, cfg_aclconfctx_t *actx, isc_mem_t *mctx) {
dns_acl_t *acl = NULL;
const cfg_obj_t *obj;
isc_result_t result;
bool retval = true;
+ if (vclass != dns_rdataclass_in) {
+ return false;
+ }
+
/*
* Check the "recursion" option first.
*/
@@ -3380,7 +3384,8 @@ check_zoneconf(const cfg_obj_t *zconfig, const cfg_obj_t *voptions,
* contradicts the purpose of the former.
*/
if (ztype == CFG_ZONE_MIRROR &&
- !check_recursion(config, voptions, goptions, logctx, actx, mctx))
+ !check_recursion(config, voptions, zclass, goptions, logctx, actx,
+ mctx))
{
cfg_obj_log(zoptions, logctx, ISC_LOG_ERROR,
"zone '%s': mirror zones cannot be used if "
@@ -5206,6 +5211,17 @@ check_viewconf(const cfg_obj_t *config, const cfg_obj_t *voptions,
cfg_aclconfctx_create(mctx, &actx);
+ if (vclass != dns_rdataclass_in) {
+ if (check_recursion(config, voptions, dns_rdataclass_in,
+ options, logctx, actx, mctx))
+ {
+ cfg_obj_log(opts, logctx, ISC_LOG_WARNING,
+ "recursion will be disabled for "
+ "non-IN view '%s'",
+ viewname);
+ }
+ }
+
if (voptions != NULL) {
(void)cfg_map_get(voptions, "zone", &zones);
} else {
diff --git a/lib/dns/adb.c b/lib/dns/adb.c
index 7c40568..06f4915 100644
--- a/lib/dns/adb.c
+++ b/lib/dns/adb.c
@@ -934,7 +934,7 @@ import_rdataset(dns_adbname_t *adbname, dns_rdataset_t *rdataset,
INSIST(DNS_ADB_VALID(adb));
rdtype = rdataset->type;
- INSIST((rdtype == dns_rdatatype_a) || (rdtype == dns_rdatatype_aaaa));
+ REQUIRE(rdtype == dns_rdatatype_a || rdtype == dns_rdatatype_aaaa);
addr_bucket = DNS_ADB_INVALIDBUCKET;
new_addresses_added = false;
diff --git a/lib/dns/message.c b/lib/dns/message.c
index 4dae88a..25e1c1a 100644
--- a/lib/dns/message.c
+++ b/lib/dns/message.c
@@ -1080,6 +1080,17 @@ getquestions(isc_buffer_t *source, dns_message_t *msg, dns_decompress_t *dctx,
rdtype = isc_buffer_getuint16(source);
rdclass = isc_buffer_getuint16(source);
+ /*
+ * Notify and update messages need to specify the data class.
+ */
+ if ((msg->opcode == dns_opcode_update ||
+ msg->opcode == dns_opcode_notify) &&
+ (rdclass == dns_rdataclass_none ||
+ rdclass == dns_rdataclass_any))
+ {
+ DO_ERROR(DNS_R_FORMERR);
+ }
+
/*
* If this class is different than the one we already read,
* this is an error.
diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c
index 72d83b6..9f0334c 100644
--- a/lib/dns/resolver.c
+++ b/lib/dns/resolver.c
@@ -7192,6 +7192,13 @@ is_answeraddress_allowed(dns_view_t *view, dns_name_t *name,
}
}
+ /*
+ * deny-answer-address doesn't apply to non-IN classes.
+ */
+ if (rdataset->rdclass != dns_rdataclass_in) {
+ return true;
+ }
+
/*
* Otherwise, search the filter list for a match for each
* address record. If a match is found, the address should be
diff --git a/lib/ns/client.c b/lib/ns/client.c
index 5d2ad0b..e303fb3 100644
--- a/lib/ns/client.c
+++ b/lib/ns/client.c
@@ -44,6 +44,7 @@
#include <dns/dispatch.h>
#include <dns/dnstap.h>
#include <dns/edns.h>
+#include <dns/enumclass.h>
#include <dns/events.h>
#include <dns/message.h>
#include <dns/peer.h>
@@ -2068,7 +2069,9 @@ ns__client_request(isc_nmhandle_t *handle, isc_result_t eresult,
}
}
- if (client->message->rdclass == 0) {
+ char classbuf[DNS_RDATACLASS_FORMATSIZE];
+ switch (client->message->rdclass) {
+ case dns_rdataclass_reserved0:
if ((client->attributes & NS_CLIENTATTR_WANTCOOKIE) != 0 &&
client->message->opcode == dns_opcode_query &&
client->message->counts[DNS_SECTION_QUESTION] == 0U)
@@ -2087,12 +2090,46 @@ ns__client_request(isc_nmhandle_t *handle, isc_result_t eresult,
return;
}
+ ns_client_dumpmessage(client,
+ "message class could not be determined");
+ ns_client_error(client, notimp ? DNS_R_NOTIMP : DNS_R_FORMERR);
+ return;
+ case dns_rdataclass_in:
+ break;
+ case dns_rdataclass_chaos:
+ break;
+ case dns_rdataclass_hs:
+ break;
+ case dns_rdataclass_none:
+ if (client->message->opcode != dns_opcode_update) {
+ ns_client_dumpmessage(client,
+ "message class NONE can be only "
+ "used in DNS updates");
+ ns_client_error(client, DNS_R_FORMERR);
+ return;
+ }
+ break;
+ case dns_rdataclass_any:
+ /*
+ * Required for TKEY negotiation.
+ */
+ if (client->message->tkey == 0) {
+ ns_client_dumpmessage(client,
+ "message class ANY can be only "
+ "used for TKEY negotiation");
+ ns_client_error(client, DNS_R_FORMERR);
+ return;
+ }
+ break;
+ default:
+ dns_rdataclass_format(client->message->rdclass, classbuf,
+ sizeof(classbuf));
+ ns_client_dumpmessage(client, NULL);
ns_client_log(client, NS_LOGCATEGORY_CLIENT,
NS_LOGMODULE_CLIENT, ISC_LOG_DEBUG(1),
- "message class could not be determined");
- ns_client_dumpmessage(client, "message class could not be "
- "determined");
- ns_client_error(client, notimp ? DNS_R_NOTIMP : DNS_R_FORMERR);
+ "invalid message class: %s", classbuf);
+
+ ns_client_error(client, DNS_R_NOTIMP);
return;
}
@@ -2125,7 +2162,7 @@ ns__client_request(isc_nmhandle_t *handle, isc_result_t eresult,
ns_client_log(client, NS_LOGCATEGORY_CLIENT,
NS_LOGMODULE_CLIENT, ISC_LOG_DEBUG(1),
"no matching view in class '%s'", classname);
- ns_client_dumpmessage(client, "no matching view in class");
+ ns_client_dumpmessage(client, NULL);
ns_client_extendederror(client, DNS_EDE_PROHIBITED, NULL);
ns_client_error(client, notimp ? DNS_R_NOTIMP : DNS_R_REFUSED);
return;
@@ -2322,6 +2359,10 @@ ns__client_request(isc_nmhandle_t *handle, isc_result_t eresult,
break;
case dns_opcode_update:
CTRACE("update");
+ if (client->view->rdclass != dns_rdataclass_in) {
+ ns_client_error(client, DNS_R_NOTIMP);
+ break;
+ }
#ifdef HAVE_DNSTAP
dns_dt_send(client->view, DNS_DTTYPE_UQ, &client->peeraddr,
&client->destsockaddr, TCP_CLIENT(client), NULL,
@@ -2332,6 +2373,10 @@ ns__client_request(isc_nmhandle_t *handle, isc_result_t eresult,
break;
case dns_opcode_notify:
CTRACE("notify");
+ if (client->view->rdclass != dns_rdataclass_in) {
+ ns_client_error(client, DNS_R_NOTIMP);
+ break;
+ }
ns_client_settimeout(client, 60);
ns_notify_start(client, handle);
break;
@@ -2758,7 +2803,7 @@ ns_client_dumpmessage(ns_client_t *client, const char *reason) {
int len = 1024;
isc_result_t result;
- if (!isc_log_wouldlog(ns_lctx, ISC_LOG_DEBUG(1))) {
+ if (!isc_log_wouldlog(ns_lctx, ISC_LOG_DEBUG(1)) || reason == NULL) {
return;
}
diff --git a/lib/ns/update.c b/lib/ns/update.c
index 3a14f23..12768fd 100644
--- a/lib/ns/update.c
+++ b/lib/ns/update.c
@@ -1027,7 +1027,9 @@ ssu_checkrr(void *data, rr_t *rr) {
RUNTIME_CHECK(result == ISC_R_SUCCESS);
target = &ptr.ptr;
}
- if (rr->rdata.type == dns_rdatatype_srv) {
+ if (rr->rdata.rdclass == dns_rdataclass_in &&
+ rr->rdata.type == dns_rdatatype_srv)
+ {
result = dns_rdata_tostruct(&rr->rdata, &srv, NULL);
RUNTIME_CHECK(result == ISC_R_SUCCESS);
target = &srv.target;
@@ -1391,7 +1393,10 @@ replaces_p(dns_rdata_t *update_rr, dns_rdata_t *db_rr) {
return (true);
}
}
- if (db_rr->type == dns_rdatatype_wks) {
+
+ if (db_rr->rdclass == dns_rdataclass_in &&
+ db_rr->type == dns_rdatatype_wks)
+ {
/*
* Compare the address and protocol fields only. These
* form the first five bytes of the RR data. Do a
@@ -1535,8 +1540,7 @@ failure:
* 'rdata', and 'ttl', respectively.
*/
static void
-get_current_rr(dns_message_t *msg, dns_section_t section,
- dns_rdataclass_t zoneclass, dns_name_t **name,
+get_current_rr(dns_message_t *msg, dns_section_t section, dns_name_t **name,
dns_rdata_t *rdata, dns_rdatatype_t *covers, dns_ttl_t *ttl,
dns_rdataclass_t *update_class) {
dns_rdataset_t *rdataset;
@@ -1552,7 +1556,7 @@ get_current_rr(dns_message_t *msg, dns_section_t section,
dns_rdataset_current(rdataset, rdata);
INSIST(dns_rdataset_next(rdataset) == ISC_R_NOMORE);
*update_class = rdata->rdclass;
- rdata->rdclass = zoneclass;
+ rdata->rdclass = dns_rdataclass_in;
}
/*%
@@ -1654,7 +1658,6 @@ send_update_event(ns_client_t *client, dns_zone_t *zone) {
dns_message_t *request = client->message;
isc_mem_t *mctx = client->manager->mctx;
dns_aclenv_t *env = client->manager->aclenv;
- dns_rdataclass_t zoneclass;
dns_rdatatype_t covers;
dns_name_t *zonename = NULL;
const dns_ssurule_t **rules = NULL;
@@ -1664,10 +1667,12 @@ send_update_event(ns_client_t *client, dns_zone_t *zone) {
CHECK(dns_zone_getdb(zone, &db));
zonename = dns_db_origin(db);
- zoneclass = dns_db_class(db);
dns_zone_getssutable(zone, &ssutable);
dns_db_currentversion(db, &ver);
+ /* Updates are only supported for class IN. */
+ INSIST(dns_zone_getclass(zone) == dns_rdataclass_in);
+
/*
* Update message processing can leak record existence information
* so check that we are allowed to query this zone. Additionally,
@@ -1717,13 +1722,13 @@ send_update_event(ns_client_t *client, dns_zone_t *zone) {
INSIST(ssutable == NULL || rule < ruleslen);
- get_current_rr(request, DNS_SECTION_UPDATE, zoneclass, &name,
- &rdata, &covers, &ttl, &update_class);
+ get_current_rr(request, DNS_SECTION_UPDATE, &name, &rdata,
+ &covers, &ttl, &update_class);
if (!dns_name_issubdomain(name, zonename)) {
FAILC(DNS_R_NOTZONE, "update RR is outside zone");
}
- if (update_class == zoneclass) {
+ if (update_class == dns_rdataclass_in) {
/*
* Check for meta-RRs. The RFC2136 pseudocode says
* check for ANY|AXFR|MAILA|MAILB, but the text adds
@@ -1809,7 +1814,6 @@ send_update_event(ns_client_t *client, dns_zone_t *zone) {
}
if (update_class == dns_rdataclass_any &&
- zoneclass == dns_rdataclass_in &&
(rdata.type == dns_rdatatype_ptr ||
rdata.type == dns_rdatatype_srv))
{
@@ -2898,7 +2902,6 @@ update_action(isc_task_t *task, isc_event_t *event) {
isc_mem_t *mctx = client->mctx;
dns_rdatatype_t covers;
dns_message_t *request = client->message;
- dns_rdataclass_t zoneclass;
dns_name_t *zonename = NULL;
dns_ssutable_t *ssutable = NULL;
dns_fixedname_t tmpnamefixed;
@@ -2919,10 +2922,10 @@ update_action(isc_task_t *task, isc_event_t *event) {
CHECK(dns_zone_getdb(zone, &db));
zonename = dns_db_origin(db);
- zoneclass = dns_db_class(db);
dns_zone_getssutable(zone, &ssutable);
options = dns_zone_getoptions(zone);
+ INSIST(dns_zone_getclass(zone) == dns_rdataclass_in);
/*
* Get old and new versions now that queryacl has been checked.
*/
@@ -2943,8 +2946,8 @@ update_action(isc_task_t *task, isc_event_t *event) {
dns_rdataclass_t update_class;
bool flag;
- get_current_rr(request, DNS_SECTION_PREREQUISITE, zoneclass,
- &name, &rdata, &covers, &ttl, &update_class);
+ get_current_rr(request, DNS_SECTION_PREREQUISITE, &name, &rdata,
+ &covers, &ttl, &update_class);
if (ttl != 0) {
PREREQFAILC(DNS_R_FORMERR, "prerequisite TTL is not "
@@ -3011,7 +3014,7 @@ update_action(isc_task_t *task, isc_event_t *event) {
"satisfied");
}
}
- } else if (update_class == zoneclass) {
+ } else if (update_class == dns_rdataclass_in) {
/* "temp<rr.name, rr.type> += rr;" */
result = temp_append(&temp, name, &rdata);
if (result != ISC_R_SUCCESS) {
@@ -3073,10 +3076,10 @@ update_action(isc_task_t *task, isc_event_t *event) {
INSIST(ssutable == NULL || rule < ruleslen);
- get_current_rr(request, DNS_SECTION_UPDATE, zoneclass, &name,
- &rdata, &covers, &ttl, &update_class);
+ get_current_rr(request, DNS_SECTION_UPDATE, &name, &rdata,
+ &covers, &ttl, &update_class);
- if (update_class == zoneclass) {
+ if (update_class == dns_rdataclass_in) {
unsigned int max = 0;
/*
--
2.54.0
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