unbound: Vendor import 1.23.0

Release notes at
	https://nlnetlabs.nl/news/2025/Apr/24/unbound-1.23.0-released/

MFC after:	2 weeks

Merge commit '44bab727dfe28451b777dc9e47db4f748b709182'

Author: cschuber

contrib/unbound/Makefile.in

@@ -179,11 +179,11 @@ testcode/unitlruhash.c testcode/unitmain.c testcode/unitmsgparse.c \
 testcode/unitneg.c testcode/unitregional.c testcode/unitslabhash.c \
 testcode/unitverify.c testcode/readhex.c testcode/testpkts.c testcode/unitldns.c \
 testcode/unitecs.c testcode/unitauth.c testcode/unitzonemd.c \
-testcode/unittcpreuse.c testcode/unitdoq.c
+testcode/unittcpreuse.c testcode/unitdoq.c testcode/unitinfra.c
 UNITTEST_OBJ=unitanchor.lo unitdname.lo unitlruhash.lo unitmain.lo \
 unitmsgparse.lo unitneg.lo unitregional.lo unitslabhash.lo unitverify.lo \
 readhex.lo testpkts.lo unitldns.lo unitecs.lo unitauth.lo unitzonemd.lo \
-unittcpreuse.lo unitdoq.lo
+unittcpreuse.lo unitdoq.lo unitinfra.lo
 UNITTEST_OBJ_LINK=$(UNITTEST_OBJ) worker_cb.lo $(COMMON_OBJ) $(SLDNS_OBJ) \
 $(COMPAT_OBJ)
 DAEMON_SRC=daemon/acl_list.c daemon/cachedump.c daemon/daemon.c \
@@ -509,10 +509,15 @@ util/configlexer.c:  $(srcdir)/util/configlexer.lex util/configparser.h
 	fi
 	@if test ! -f $@; then echo "No $@ : need flex and bison to compile from source repository"; exit 1; fi
 
-util/configparser.c util/configparser.h:  $(srcdir)/util/configparser.y
+# Builds both util/configparser.c and util/configparser.h.
+# To avoid double-building we split one target out.
+util/configparser.c:  $(srcdir)/util/configparser.y
 	@-if test ! -d util; then $(INSTALL) -d util; fi
 	$(YACC) -d -o util/configparser.c $(srcdir)/util/configparser.y
 
+util/configparser.h: util/configparser.c
+	touch $@
+
 clean:
 	rm -f *.o *.d *.lo *~ tags
 	rm -f unbound$(EXEEXT) unbound-checkconf$(EXEEXT) unbound-host$(EXEEXT) unbound-control$(EXEEXT) unbound-anchor$(EXEEXT) unbound-control-setup libunbound.la unbound.h
@@ -876,7 +881,7 @@ view.lo view.o: $(srcdir)/services/view.c config.h $(srcdir)/services/view.h $(s
  $(srcdir)/util/locks.h $(srcdir)/util/log.h $(srcdir)/services/localzone.h $(srcdir)/util/storage/dnstree.h \
  $(srcdir)/util/module.h $(srcdir)/util/storage/lruhash.h $(srcdir)/util/data/msgreply.h \
  $(srcdir)/util/data/packed_rrset.h $(srcdir)/util/data/msgparse.h $(srcdir)/sldns/pkthdr.h \
- $(srcdir)/sldns/rrdef.h $(srcdir)/sldns/sbuffer.h $(srcdir)/util/config_file.h
+ $(srcdir)/sldns/rrdef.h $(srcdir)/sldns/sbuffer.h $(srcdir)/util/config_file.h $(srcdir)/respip/respip.h
 rpz.lo rpz.o: $(srcdir)/services/rpz.c config.h $(srcdir)/services/rpz.h $(srcdir)/services/localzone.h \
  $(srcdir)/util/rbtree.h $(srcdir)/util/locks.h $(srcdir)/util/log.h $(srcdir)/util/storage/dnstree.h \
  $(srcdir)/util/module.h $(srcdir)/util/storage/lruhash.h $(srcdir)/util/data/msgreply.h \
@@ -972,7 +977,7 @@ fptr_wlist.lo fptr_wlist.o: $(srcdir)/util/fptr_wlist.c config.h $(srcdir)/util/
  $(srcdir)/validator/val_nsec3.h $(srcdir)/validator/val_sigcrypt.h $(srcdir)/validator/val_kentry.h \
  $(srcdir)/validator/val_neg.h $(srcdir)/validator/autotrust.h $(srcdir)/libunbound/libworker.h \
  $(srcdir)/libunbound/context.h $(srcdir)/util/alloc.h $(srcdir)/libunbound/unbound-event.h \
- $(srcdir)/libunbound/worker.h
+ $(srcdir)/libunbound/worker.h $(srcdir)/daemon/remote.h
 locks.lo locks.o: $(srcdir)/util/locks.c config.h $(srcdir)/util/locks.h $(srcdir)/util/log.h
 log.lo log.o: $(srcdir)/util/log.c config.h $(srcdir)/util/log.h $(srcdir)/util/locks.h $(srcdir)/sldns/sbuffer.h
 mini_event.lo mini_event.o: $(srcdir)/util/mini_event.c config.h $(srcdir)/util/mini_event.h $(srcdir)/util/rbtree.h \
@@ -1059,7 +1064,7 @@ tube.lo tube.o: $(srcdir)/util/tube.c config.h $(srcdir)/util/tube.h $(srcdir)/u
  $(srcdir)/libunbound/unbound.h $(srcdir)/respip/respip.h $(srcdir)/util/ub_event.h
 ub_event.lo ub_event.o: $(srcdir)/util/ub_event.c config.h $(srcdir)/util/ub_event.h $(srcdir)/util/log.h \
  $(srcdir)/util/netevent.h $(srcdir)/dnscrypt/dnscrypt.h  \
- $(srcdir)/util/tube.h $(srcdir)/util/mini_event.h $(srcdir)/util/rbtree.h
+ $(srcdir)/util/tube.h $(srcdir)/util/mini_event.h $(srcdir)/util/rbtree.h $(srcdir)/daemon/remote.h
 ub_event_pluggable.lo ub_event_pluggable.o: $(srcdir)/util/ub_event_pluggable.c config.h $(srcdir)/util/ub_event.h \
  $(srcdir)/libunbound/unbound-event.h $(srcdir)/util/netevent.h $(srcdir)/dnscrypt/dnscrypt.h \
   $(srcdir)/util/log.h $(srcdir)/util/fptr_wlist.h \
@@ -1256,6 +1261,7 @@ unitzonemd.lo unitzonemd.o: $(srcdir)/testcode/unitzonemd.c config.h $(srcdir)/u
  $(srcdir)/validator/val_anchor.h
 unittcpreuse.lo unittcpreuse.o: $(srcdir)/testcode/unittcpreuse.c config.h $(srcdir)/services/outside_network.h \
 $(srcdir)/util/random.h
+unitinfra.lo unitinfra.o: $(srcdir)/testcode/unitinfra.c config.h $(srcdir)/util/config_file.h $(srcdir)/util/net_help.h $(srcdir)/iterator/iterator.h
 acl_list.lo acl_list.o: $(srcdir)/daemon/acl_list.c config.h $(srcdir)/daemon/acl_list.h \
  $(srcdir)/util/storage/dnstree.h $(srcdir)/util/rbtree.h $(srcdir)/services/view.h $(srcdir)/util/locks.h \
  $(srcdir)/util/log.h $(srcdir)/util/regional.h $(srcdir)/util/config_file.h $(srcdir)/util/net_help.h \
@@ -1307,7 +1313,10 @@ remote.lo remote.o: $(srcdir)/daemon/remote.c config.h $(srcdir)/daemon/remote.h
  $(srcdir)/validator/val_anchor.h $(srcdir)/iterator/iterator.h $(srcdir)/services/outbound_list.h \
  $(srcdir)/iterator/iter_fwd.h $(srcdir)/iterator/iter_hints.h $(srcdir)/iterator/iter_delegpt.h \
  $(srcdir)/services/outside_network.h $(srcdir)/sldns/str2wire.h $(srcdir)/sldns/parseutil.h \
- $(srcdir)/sldns/wire2str.h $(srcdir)/util/edns.h
+ $(srcdir)/sldns/wire2str.h $(srcdir)/util/edns.h \
+ $(srcdir)/util/locks.h $(srcdir)/util/ub_event.h \
+ $(srcdir)/util/tcp_conn_limit.h $(srcdir)/util/edns.h $(srcdir)/validator/val_neg.h \
+ $(srcdir)/iterator/iter_utils.h $(srcdir)/iterator/iter_donotq.h $(srcdir)/iterator/iter_priv.h
 stats.lo stats.o: $(srcdir)/daemon/stats.c config.h $(srcdir)/daemon/stats.h $(srcdir)/util/timehist.h \
  $(srcdir)/libunbound/unbound.h $(srcdir)/daemon/worker.h $(srcdir)/libunbound/worker.h $(srcdir)/sldns/sbuffer.h \
  $(srcdir)/util/data/packed_rrset.h $(srcdir)/util/storage/lruhash.h $(srcdir)/util/locks.h $(srcdir)/util/log.h \

contrib/unbound/ax_build_date_epoch.m4

@@ -0,0 +1,70 @@
+# ===========================================================================
+#   https://www.gnu.org/software/autoconf-archive/ax_build_date_epoch.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_BUILD_DATE_EPOCH(VARIABLE[, FORMAT[, ACTION-IF-FAIL]])
+#
+# DESCRIPTION
+#
+#   Sets VARIABLE to a string representing the current time.  It is
+#   formatted according to FORMAT if specified, otherwise it is formatted as
+#   the number of seconds (excluding leap seconds) since the UNIX epoch (01
+#   Jan 1970 00:00:00 UTC).
+#
+#   If the SOURCE_DATE_EPOCH environment variable is set, it uses the value
+#   of that variable instead of the current time.  See
+#   https://reproducible-builds.org/specs/source-date-epoch).  If
+#   SOURCE_DATE_EPOCH is set but cannot be properly interpreted as a UNIX
+#   timestamp, then execute ACTION-IF-FAIL if specified, otherwise error.
+#
+#   VARIABLE is AC_SUBST-ed.
+#
+# LICENSE
+#
+#   Copyright (c) 2016 Eric Bavier <[email protected]>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 2
+
+AC_DEFUN([AX_BUILD_DATE_EPOCH],
+[dnl
+AC_MSG_CHECKING([for build time])
+ax_date_fmt="m4_default($2,%s)"
+AS_IF([test x"$SOURCE_DATE_EPOCH" = x],
+ [$1=`date "+$ax_date_fmt"`],
+ [ax_build_date=`date -u -d "@$SOURCE_DATE_EPOCH" "+$ax_date_fmt" 2>/dev/null \
+                 || date -u -r "$SOURCE_DATE_EPOCH" "+$ax_date_fmt" 2>/dev/null`
+  AS_IF([test x"$ax_build_date" = x],
+   [m4_ifval([$3],
+      [$3],
+      [AC_MSG_ERROR([malformed SOURCE_DATE_EPOCH])])],
+   [$1=$ax_build_date])])
+AC_MSG_RESULT([$$1])
+])dnl AX_BUILD_DATE_EPOCH

contrib/unbound/cachedb/cachedb.c

@@ -47,6 +47,7 @@
 #include "util/regional.h"
 #include "util/net_help.h"
 #include "util/config_file.h"
+#include "util/data/dname.h"
 #include "util/data/msgreply.h"
 #include "util/data/msgencode.h"
 #include "services/cache/dns.h"
@@ -341,6 +342,7 @@ calc_hash(struct query_info* qinfo, struct module_env* env, char* buf,
 	/* copy the hash info into the clear buffer */
 	if(clen + qinfo->qname_len < sizeof(clear)) {
 		memmove(clear+clen, qinfo->qname, qinfo->qname_len);
+		query_dname_tolower(clear+clen);
 		clen += qinfo->qname_len;
 	}
 	if(clen + 4 < sizeof(clear)) {
@@ -755,7 +757,8 @@ cachedb_intcache_store(struct module_qstate* qstate, int msg_expired)
 	}
 	(void)dns_cache_store(qstate->env, &qstate->qinfo,
 		qstate->return_msg->rep, 0, qstate->prefetch_leeway, 0,
-		qstate->region, store_flags, qstate->qstarttime);
+		qstate->region, store_flags, qstate->qstarttime,
+		qstate->is_valrec);
 	if(serve_expired && msg_expired) {
 		if(qstate->env->cfg->serve_expired_client_timeout) {
 			/* No expired response from the query state, the