external/bsd/bind/dist/lib/dns/ncache.c
author martin <martin@NetBSD.org>
Sun, 13 Mar 2016 08:00:24 +0000
branchnetbsd-7-0
changeset 275887 e6987d6aadcd
parent 254565 d92bc7418bcf
child 276050 ccbc27e5b158
permissions -rw-r--r--
Pull up following revision(s) (requested by snj in ticket #1140): distrib/sets/lists/base/ad.aarch64: patch distrib/sets/lists/base/ad.arm: patch distrib/sets/lists/base/ad.mips: patch distrib/sets/lists/base/ad.powerpc: patch distrib/sets/lists/base/md.amd64: patch distrib/sets/lists/base/md.sparc64: patch distrib/sets/lists/base/shl.mi: patch distrib/sets/lists/debug/ad.aarch64: patch distrib/sets/lists/debug/ad.arm: patch distrib/sets/lists/debug/ad.mips: patch distrib/sets/lists/debug/ad.powerpc: patch distrib/sets/lists/debug/md.amd64: patch distrib/sets/lists/debug/md.sparc64: patch distrib/sets/lists/debug/shl.mi: patch doc/3RDPARTY: patch external/bsd/bind/bind2netbsd: up to 1.3 external/bsd/bind/dist/CHANGES: up to 1.20 external/bsd/bind/dist/COPYRIGHT: up to 1.1.1.10 external/bsd/bind/dist/README: up to 1.8 external/bsd/bind/dist/bin/check/check-tool.c: up to 1.8 external/bsd/bind/dist/bin/check/named-checkconf.c: up to 1.12 external/bsd/bind/dist/bin/check/named-checkzone.c: up to 1.8 external/bsd/bind/dist/bin/confgen/keygen.c: up to 1.7 external/bsd/bind/dist/bin/confgen/util.c: up to 1.5 external/bsd/bind/dist/bin/dig/dig.1: up to 1.11 external/bsd/bind/dist/bin/dig/dig.c: up to 1.11 external/bsd/bind/dist/bin/dig/dig.docbook: up to 1.1.1.12 external/bsd/bind/dist/bin/dig/dig.html: up to 1.1.1.12 external/bsd/bind/dist/bin/dig/dighost.c: up to 1.17 external/bsd/bind/dist/bin/dig/include/dig/dig.h: up to 1.12 external/bsd/bind/dist/bin/dig/nslookup.c: up to 1.12 external/bsd/bind/dist/bin/dnssec/dnssec-dsfromkey.8: up to 1.8 external/bsd/bind/dist/bin/dnssec/dnssec-dsfromkey.c: up to 1.12 external/bsd/bind/dist/bin/dnssec/dnssec-dsfromkey.docbook: up to 1.1.1.9 external/bsd/bind/dist/bin/dnssec/dnssec-dsfromkey.html: up to 1.1.1.10 external/bsd/bind/dist/bin/dnssec/dnssec-keygen.c: up to 1.17 external/bsd/bind/dist/bin/dnssec/dnssec-revoke.c: up to 1.9 external/bsd/bind/dist/bin/dnssec/dnssec-settime.c: up to 1.13 external/bsd/bind/dist/bin/dnssec/dnssec-signzone.c: up to 1.16 external/bsd/bind/dist/bin/named/bind9.xsl: up to 1.1.1.8 external/bsd/bind/dist/bin/named/bind9.xsl.h: up to 1.9 external/bsd/bind/dist/bin/named/client.c: up to 1.15 external/bsd/bind/dist/bin/named/config.c: up to 1.12 external/bsd/bind/dist/bin/named/control.c: up to 1.10 external/bsd/bind/dist/bin/named/controlconf.c: up to 1.11 external/bsd/bind/dist/bin/named/include/named/lwdclient.h: up to 1.5 external/bsd/bind/dist/bin/named/include/named/main.h: up to 1.6 external/bsd/bind/dist/bin/named/include/named/server.h: up to 1.10 external/bsd/bind/dist/bin/named/interfacemgr.c: up to 1.11 external/bsd/bind/dist/bin/named/logconf.c: up to 1.8 external/bsd/bind/dist/bin/named/lwdclient.c: up to 1.5 external/bsd/bind/dist/bin/named/lwresd.c: up to 1.7 external/bsd/bind/dist/bin/named/main.c: up to 1.19 external/bsd/bind/dist/bin/named/named.8: up to 1.8 external/bsd/bind/dist/bin/named/named.docbook: up to 1.1.1.8 external/bsd/bind/dist/bin/named/named.html: up to 1.1.1.9 external/bsd/bind/dist/bin/named/query.c: up to 1.21 external/bsd/bind/dist/bin/named/server.c: up to 1.20 external/bsd/bind/dist/bin/named/statschannel.c: up to 1.11 external/bsd/bind/dist/bin/named/update.c: up to 1.12 external/bsd/bind/dist/bin/named/win32/named.dsp.in: up to 1.1.1.3 external/bsd/bind/dist/bin/named/win32/named.mak.in: up to 1.1.1.3 external/bsd/bind/dist/bin/named/win32/named.vcxproj.in: up to 1.1.1.3 external/bsd/bind/dist/bin/named/win32/ntservice.c: up to 1.7 external/bsd/bind/dist/bin/named/win32/os.c: up to 1.9 external/bsd/bind/dist/bin/named/xfrout.c: up to 1.10 external/bsd/bind/dist/bin/nsupdate/nsupdate.1: up to 1.7 external/bsd/bind/dist/bin/nsupdate/nsupdate.c: up to 1.14 external/bsd/bind/dist/bin/nsupdate/nsupdate.docbook: up to 1.1.1.8 external/bsd/bind/dist/bin/nsupdate/nsupdate.html: up to 1.1.1.10 external/bsd/bind/dist/bin/pkcs11/Makefile.in: up to 1.1.1.7 external/bsd/bind/dist/bin/pkcs11/openssl-0.9.8zc-patch delete external/bsd/bind/dist/bin/pkcs11/openssl-0.9.8ze-patch: up to 1.1.1.1 external/bsd/bind/dist/bin/pkcs11/openssl-1.0.0o-patch delete external/bsd/bind/dist/bin/pkcs11/openssl-1.0.0q-patch: up to 1.1.1.1 external/bsd/bind/dist/bin/pkcs11/openssl-1.0.1j-patch delete external/bsd/bind/dist/bin/pkcs11/openssl-1.0.1l-patch: up to 1.1.1.1 external/bsd/bind/dist/bin/pkcs11/pkcs11-destroy.c: up to 1.8 external/bsd/bind/dist/bin/pkcs11/pkcs11-keygen.c: up to 1.8 external/bsd/bind/dist/bin/pkcs11/pkcs11-list.c: up to 1.8 external/bsd/bind/dist/bin/pkcs11/pkcs11-tokens.c: up to 1.1.1.5 external/bsd/bind/dist/bin/python/dnssec-coverage.py.in: up to 1.1.1.6 external/bsd/bind/dist/bin/rndc/rndc.8: up to 1.8 external/bsd/bind/dist/bin/rndc/rndc.c: up to 1.14 external/bsd/bind/dist/bin/rndc/rndc.docbook: up to 1.1.1.8 external/bsd/bind/dist/bin/rndc/rndc.html: up to 1.1.1.9 external/bsd/bind/dist/bin/rndc/util.c: up to 1.5 external/bsd/bind/dist/bin/tests/Makefile.in: up to 1.1.1.9 external/bsd/bind/dist/bin/tests/adb_test.c: up to 1.9 external/bsd/bind/dist/bin/tests/backtrace_test.c: up to 1.8 external/bsd/bind/dist/bin/tests/byaddr_test.c: up to 1.8 external/bsd/bind/dist/bin/tests/byname_test.c: up to 1.8 external/bsd/bind/dist/bin/tests/cfg_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/compress_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/db/t_db.c: up to 1.8 external/bsd/bind/dist/bin/tests/db_test.c: up to 1.8 external/bsd/bind/dist/bin/tests/dst/dst_test.c: up to 1.8 external/bsd/bind/dist/bin/tests/entropy2_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/entropy_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/fromhex.pl: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/fsaccess_test.c: up to 1.9 external/bsd/bind/dist/bin/tests/gxba_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/gxbn_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/hash_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/inter_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/keyboard_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/lex_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/lfsr_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/log_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/lwres_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/lwresconf_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/makejournal.c: up to 1.4 external/bsd/bind/dist/bin/tests/master_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/name_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/names/t_names.c: up to 1.10 external/bsd/bind/dist/bin/tests/net/driver.c: up to 1.7 external/bsd/bind/dist/bin/tests/net/netaddr_multicast.c: up to 1.5 external/bsd/bind/dist/bin/tests/pkcs11/benchmarks/find.c: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/pkcs11/benchmarks/genrsa.c: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/pkcs11/benchmarks/login.c: up to 1.1.1.4 external/bsd/bind/dist/bin/tests/pkcs11/benchmarks/random.c: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/pkcs11/benchmarks/session.c: up to 1.1.1.4 external/bsd/bind/dist/bin/tests/pkcs11/benchmarks/sha1.c: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/pkcs11/benchmarks/sign.c: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/pkcs11/benchmarks/verify.c: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/pkcs11/pkcs11-hmacmd5.c: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/pkcs11/pkcs11-md5sum.c: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/printmsg.c: delete external/bsd/bind/dist/bin/tests/printmsg.h: delete external/bsd/bind/dist/bin/tests/ratelimiter_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/rbt/t_rbt.c: up to 1.8 external/bsd/bind/dist/bin/tests/rbt_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/rdata_test.c: up to 1.9 external/bsd/bind/dist/bin/tests/serial_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/sig0_test.c: up to 1.9 external/bsd/bind/dist/bin/tests/sock_test.c: up to 1.9 external/bsd/bind/dist/bin/tests/sym_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/system/Makefile.in: up to 1.1.1.10 external/bsd/bind/dist/bin/tests/system/README: up to 1.1.1.6 external/bsd/bind/dist/bin/tests/system/addzone/tests.sh: up to 1.1.1.9 external/bsd/bind/dist/bin/tests/system/builtin/Makefile.in: up to 1.1.1.2 external/bsd/bind/dist/bin/tests/system/builtin/gethostname.c: up to 1.1.1.4 external/bsd/bind/dist/bin/tests/system/builtin/tests.sh: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/system/checkconf/good-class.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/checkzone/tests.sh: up to 1.1.1.8 external/bsd/bind/dist/bin/tests/system/checkzone/zones/bad-caa-rr.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/checkzone/zones/bad-dns-sd-reverse.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/checkzone/zones/bad-nsap-empty.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/checkzone/zones/bad-nsap-odd-nibble.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/checkzone/zones/bad-unspec.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/checkzone/zones/good-dns-sd-reverse.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/checkzone/zones/good-gc-msdcs.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/checkzone/zones/good-nsap.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/cleanall.sh: up to 1.1.1.7 external/bsd/bind/dist/bin/tests/system/conf.sh.in: up to 1.1.1.16 external/bsd/bind/dist/bin/tests/system/ditch.pl: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/dlzexternal/driver.c: up to 1.4 external/bsd/bind/dist/bin/tests/system/dnssec/clean.sh: up to 1.1.1.16 external/bsd/bind/dist/bin/tests/system/dnssec/ns2/cdnskey-auto.secure.db.in: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/dnssec/ns2/cdnskey-update.secure.db.in: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/dnssec/ns2/cdnskey.secure.db.in: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/dnssec/ns2/cds-auto.secure.db.in: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/dnssec/ns2/cds-update.secure.db.in: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/dnssec/ns2/cds.secure.db.in: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/dnssec/ns2/named.conf: up to 1.1.1.7 external/bsd/bind/dist/bin/tests/system/dnssec/ns2/sign.sh: up to 1.1.1.16 external/bsd/bind/dist/bin/tests/system/dnssec/prereq.sh: up to 1.1.1.9 external/bsd/bind/dist/bin/tests/system/dnssec/tests.sh: up to 1.1.1.16 external/bsd/bind/dist/bin/tests/system/ednscompliance/clean.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/ednscompliance/ns1/named.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/ednscompliance/ns1/root.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/ednscompliance/tests.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/Makefile.in: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/ans4/ans.pl: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/clean.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/fetchlimit.c: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/ns1/named.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/ns1/root.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/ns2/example.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/ns2/named.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/ns3/named.args: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/ns3/named1.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/ns3/named2.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/ns3/named3.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/ns3/root.hint: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/prereq.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/setup.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/fetchlimit/tests.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/filter-aaaa/tests.sh: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/system/inline/clean.sh: up to 1.1.1.6 external/bsd/bind/dist/bin/tests/system/inline/ns3/named.conf: up to 1.1.1.3 external/bsd/bind/dist/bin/tests/system/lwresd/lwtest.c: up to 1.8 external/bsd/bind/dist/bin/tests/system/masterfile/clean.sh: up to 1.1.1.6 external/bsd/bind/dist/bin/tests/system/masterfile/tests.sh: up to 1.1.1.6 external/bsd/bind/dist/bin/tests/system/masterfile/zone/inheritownerafterinclude.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/masterfile/zone/inheritownerafterinclude.good: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/masterfile/zone/nameservers.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/nsupdate/prereq.sh: up to 1.1.1.3 external/bsd/bind/dist/bin/tests/system/nsupdate/tests.sh: up to 1.1.1.10 external/bsd/bind/dist/bin/tests/system/reclimit/ans2/ans.pl: up to 1.1.1.2 external/bsd/bind/dist/bin/tests/system/reclimit/prereq.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/reclimit/tests.sh: up to 1.1.1.2 external/bsd/bind/dist/bin/tests/system/resolver/ns4/named.conf: up to 1.1.1.7 external/bsd/bind/dist/bin/tests/system/resolver/ns6/named.conf: up to 1.1.1.6 external/bsd/bind/dist/bin/tests/system/resolver/tests.sh: up to 1.1.1.13 external/bsd/bind/dist/bin/tests/system/rndc/tests.sh: up to 1.1.1.7 external/bsd/bind/dist/bin/tests/system/rpzrecurse/ns1/named.conf: up to 1.1.1.2 external/bsd/bind/dist/bin/tests/system/rpzrecurse/ns1/test1.example.net.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/rpzrecurse/ns1/test2.example.net.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/rpzrecurse/ns2/db.wildcard1: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/rpzrecurse/ns2/db.wildcard2a: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/rpzrecurse/ns2/db.wildcard2b: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/rpzrecurse/ns2/db.wildcard3: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/rpzrecurse/ns2/named.wildcard1.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/rpzrecurse/ns2/named.wildcard2.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/rpzrecurse/ns2/named.wildcard3.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/rpzrecurse/tests.sh: up to 1.1.1.2 external/bsd/bind/dist/bin/tests/system/rrsetorder/ns4/named.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/rrsetorder/tests.sh: up to 1.1.1.6 external/bsd/bind/dist/bin/tests/system/rsabigexponent/Makefile.in: up to 1.1.1.3 external/bsd/bind/dist/bin/tests/system/rsabigexponent/bigkey.c: up to 1.7 external/bsd/bind/dist/bin/tests/system/sit/tests.sh: up to 1.1.1.3 external/bsd/bind/dist/bin/tests/system/start.pl: up to 1.1.1.13 external/bsd/bind/dist/bin/tests/system/staticstub/clean.sh: up to 1.1.1.5 external/bsd/bind/dist/bin/tests/system/staticstub/ns2/named.conf.in: up to 1.1.1.3 external/bsd/bind/dist/bin/tests/system/staticstub/ns3/named.conf.in: up to 1.1.1.4 external/bsd/bind/dist/bin/tests/system/staticstub/ns3/sign.sh: up to 1.1.1.6 external/bsd/bind/dist/bin/tests/system/staticstub/ns3/undelegated.db.in: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/staticstub/tests.sh: up to 1.1.1.6 external/bsd/bind/dist/bin/tests/system/statistics/Makefile.in: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/statistics/clean.sh: up to 1.1.1.2 external/bsd/bind/dist/bin/tests/system/statistics/ns1/named.conf: up to 1.1.1.2 external/bsd/bind/dist/bin/tests/system/statistics/ns1/zone.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/statistics/tests.sh: up to 1.1.1.2 external/bsd/bind/dist/bin/tests/system/statistics/xmlstats.c: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/statschannel/clean.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/statschannel/fetch.pl: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/statschannel/ns2/example.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/statschannel/ns2/named.conf: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/statschannel/prereq.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/statschannel/server-json.pl: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/statschannel/server-xml.pl: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/statschannel/tests.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/stress/prereq.sh: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/stress/tests.sh: up to 1.1.1.6 external/bsd/bind/dist/bin/tests/system/tkey/Makefile.in: up to 1.1.1.8 external/bsd/bind/dist/bin/tests/system/tkey/keycreate.c: up to 1.8 external/bsd/bind/dist/bin/tests/system/tkey/keydelete.c: up to 1.7 external/bsd/bind/dist/bin/tests/system/views/ns2/1.10.in-addr.arpa.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/views/ns2/named2.conf: up to 1.1.1.6 external/bsd/bind/dist/bin/tests/system/xfer/tests.sh: up to 1.1.1.10 external/bsd/bind/dist/bin/tests/system/zonechecks/bigserial.db: up to 1.1.1.1 external/bsd/bind/dist/bin/tests/system/zonechecks/ns1/named.conf: up to 1.1.1.3 external/bsd/bind/dist/bin/tests/system/zonechecks/setup.sh: up to 1.1.1.4 external/bsd/bind/dist/bin/tests/system/zonechecks/tests.sh: up to 1.1.1.7 external/bsd/bind/dist/bin/tests/task_test.c: up to 1.9 external/bsd/bind/dist/bin/tests/tasks/t_tasks.c: up to 1.8 external/bsd/bind/dist/bin/tests/timer_test.c: up to 1.9 external/bsd/bind/dist/bin/tests/wire_test.c: up to 1.7 external/bsd/bind/dist/bin/tests/zone_test.c: up to 1.9 external/bsd/bind/dist/bin/tools/arpaname.c: up to 1.5 external/bsd/bind/dist/bin/tools/isc-hmac-fixup.c: up to 1.8 external/bsd/bind/dist/bin/tools/named-journalprint.c: up to 1.7 external/bsd/bind/dist/bin/tools/named-rrchecker.c: up to 1.1.1.4 external/bsd/bind/dist/bin/win32/BINDInstall/BINDInstallDlg.cpp: up to 1.1.1.10 external/bsd/bind/dist/bin/win32/BINDInstall/VersionInfo.cpp: up to 1.1.1.2 external/bsd/bind/dist/config.h.in: up to 1.12 external/bsd/bind/dist/config.h.win32: up to 1.1.1.12 external/bsd/bind/dist/configure: up to 1.5 external/bsd/bind/dist/configure.in: up to 1.8 external/bsd/bind/dist/contrib/README: up to 1.1.1.3 external/bsd/bind/dist/contrib/scripts/dnssec-keyset.sh: up to 1.1.1.1 external/bsd/bind/dist/doc/arm/Bv9ARM-book.xml: up to 1.1.1.19 external/bsd/bind/dist/doc/arm/Bv9ARM.ch01.html: up to 1.1.1.18 external/bsd/bind/dist/doc/arm/Bv9ARM.ch02.html: up to 1.1.1.15 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external/bsd/bind/dist/lib/isc/task.c: up to 1.12 external/bsd/bind/dist/lib/isc/tests/Makefile.in: up to 1.1.1.10 external/bsd/bind/dist/lib/isc/tests/hash_test.c: up to 1.1.1.8 external/bsd/bind/dist/lib/isc/tests/mem_test.c: up to 1.1.1.2 external/bsd/bind/dist/lib/isc/tests/print_test.c: up to 1.1.1.5 external/bsd/bind/dist/lib/isc/tests/regex_test.c: up to 1.1.1.4 external/bsd/bind/dist/lib/isc/tests/safe_test.c: up to 1.4 external/bsd/bind/dist/lib/isc/tests/socket_test.c: up to 1.1.1.7 external/bsd/bind/dist/lib/isc/timer.c: up to 1.11 external/bsd/bind/dist/lib/isc/unix/app.c: up to 1.14 external/bsd/bind/dist/lib/isc/unix/file.c: up to 1.10 external/bsd/bind/dist/lib/isc/unix/ifiter_ioctl.c: up to 1.6 external/bsd/bind/dist/lib/isc/unix/ifiter_sysctl.c: up to 1.6 external/bsd/bind/dist/lib/isc/unix/include/isc/offset.h: up to 1.5 external/bsd/bind/dist/lib/isc/unix/net.c: up to 1.9 external/bsd/bind/dist/lib/isc/unix/socket.c: up to 1.18 external/bsd/bind/dist/lib/isc/win32/interfaceiter.c: up to 1.7 external/bsd/bind/dist/lib/isc/win32/libisc.def.exclude: up to 1.1.1.1 external/bsd/bind/dist/lib/isc/win32/libisc.def.in: up to 1.1.1.7 external/bsd/bind/dist/lib/isc/win32/libisc.vcxproj.in: up to 1.1.1.6 external/bsd/bind/dist/lib/isc/win32/net.c: up to 1.9 external/bsd/bind/dist/lib/isc/win32/win32os.c: up to 1.7 external/bsd/bind/dist/lib/isccc/Makefile.in: up to 1.1.1.10 external/bsd/bind/dist/lib/isccc/alist.c: up to 1.5 external/bsd/bind/dist/lib/isccc/api: up to 1.1.1.11 external/bsd/bind/dist/lib/isccc/cc.c: up to 1.10 external/bsd/bind/dist/lib/isccc/sexpr.c: up to 1.6 external/bsd/bind/dist/lib/isccfg/api: up to 1.1.1.17 external/bsd/bind/dist/lib/isccfg/include/isccfg/cfg.h: up to 1.7 external/bsd/bind/dist/lib/isccfg/include/isccfg/grammar.h: up to 1.6 external/bsd/bind/dist/lib/isccfg/namedconf.c: up to 1.12 external/bsd/bind/dist/lib/isccfg/parser.c: up to 1.10 external/bsd/bind/dist/lib/isccfg/win32/libisccfg.def: up to 1.1.1.8 external/bsd/bind/dist/lib/lwres/api: up to 1.1.1.14 external/bsd/bind/dist/lib/lwres/herror.c: up to 1.7 external/bsd/bind/dist/lib/lwres/print.c: up to 1.7 external/bsd/bind/dist/lib/lwres/win32/socket.c: up to 1.5 external/bsd/bind/dist/lib/samples/nsprobe.c: up to 1.1.1.6 external/bsd/bind/dist/lib/samples/resolve.c: up to 1.1.1.5 external/bsd/bind/dist/lib/samples/sample-async.c: up to 1.1.1.5 external/bsd/bind/dist/lib/samples/sample-gai.c: up to 1.1.1.5 external/bsd/bind/dist/lib/samples/sample-request.c: up to 1.1.1.6 external/bsd/bind/dist/lib/samples/sample-update.c: up to 1.1.1.6 external/bsd/bind/dist/srcid: up to 1.14 external/bsd/bind/dist/version: up to 1.18 external/bsd/bind/dist/win32utils/Configure: up to 1.1.1.5 external/bsd/bind/dist/win32utils/index.html: up to 1.1.1.7 external/bsd/bind/dist/win32utils/legacy/BuildSetup.bat.in: up to 1.1.1.5 external/bsd/bind/include/config.h: up to 1.18 external/bsd/bind/include/dns/enumclass.h: up to 1.8 external/bsd/bind/include/dns/enumtype.h: up to 1.11 external/bsd/bind/include/dns/rdatastruct.h: up to 1.11 external/bsd/bind/include/isc/platform.h: up to 1.21 external/bsd/bind/include/lwres/platform.h: up to 1.7 external/bsd/bind/lib/libbind9/shlib_version: up to 1.16 external/bsd/bind/lib/libdns/shlib_version: up to 1.18 external/bsd/bind/lib/libirs/shlib_version: up to 1.5 external/bsd/bind/lib/libisc/shlib_version: up to 1.18 external/bsd/bind/lib/libisccc/shlib_version: up to 1.16 external/bsd/bind/lib/libisccfg/shlib_version: up to 1.16 external/bsd/bind/lib/liblwres/shlib_version: up to 1.16 Update BIND to 9.10.3-P4.

/*	$NetBSD: ncache.c,v 1.7.4.2.2.1 2016/03/13 08:00:35 martin Exp $	*/

/*
 * Copyright (C) 2004, 2005, 2007, 2008, 2010-2015  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 1999-2003  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 */

/*! \file */

#include <config.h>

#include <isc/buffer.h>
#include <isc/util.h>

#include <dns/db.h>
#include <dns/message.h>
#include <dns/ncache.h>
#include <dns/rdata.h>
#include <dns/rdatalist.h>
#include <dns/rdataset.h>
#include <dns/rdatastruct.h>

#define DNS_NCACHE_RDATA 20U

/*
 * The format of an ncache rdata is a sequence of zero or more records of
 * the following format:
 *
 *	owner name
 *	type
 *	trust
 *	rdata count
 *		rdata length			These two occur 'rdata count'
 *		rdata				times.
 *
 */

static isc_result_t
addoptout(dns_message_t *message, dns_db_t *cache, dns_dbnode_t *node,
	  dns_rdatatype_t covers, isc_stdtime_t now, dns_ttl_t maxttl,
	  isc_boolean_t optout, isc_boolean_t secure,
	  dns_rdataset_t *addedrdataset);

static inline isc_result_t
copy_rdataset(dns_rdataset_t *rdataset, isc_buffer_t *buffer) {
	isc_result_t result;
	unsigned int count;
	isc_region_t ar, r;
	dns_rdata_t rdata = DNS_RDATA_INIT;

	/*
	 * Copy the rdataset count to the buffer.
	 */
	isc_buffer_availableregion(buffer, &ar);
	if (ar.length < 2)
		return (ISC_R_NOSPACE);
	count = dns_rdataset_count(rdataset);
	INSIST(count <= 65535);
	isc_buffer_putuint16(buffer, (isc_uint16_t)count);

	result = dns_rdataset_first(rdataset);
	while (result == ISC_R_SUCCESS) {
		dns_rdataset_current(rdataset, &rdata);
		dns_rdata_toregion(&rdata, &r);
		INSIST(r.length <= 65535);
		isc_buffer_availableregion(buffer, &ar);
		if (ar.length < 2)
			return (ISC_R_NOSPACE);
		/*
		 * Copy the rdata length to the buffer.
		 */
		isc_buffer_putuint16(buffer, (isc_uint16_t)r.length);
		/*
		 * Copy the rdata to the buffer.
		 */
		result = isc_buffer_copyregion(buffer, &r);
		if (result != ISC_R_SUCCESS)
			return (result);
		dns_rdata_reset(&rdata);
		result = dns_rdataset_next(rdataset);
	}
	if (result != ISC_R_NOMORE)
		return (result);

	return (ISC_R_SUCCESS);
}

isc_result_t
dns_ncache_add(dns_message_t *message, dns_db_t *cache, dns_dbnode_t *node,
	       dns_rdatatype_t covers, isc_stdtime_t now, dns_ttl_t maxttl,
	       dns_rdataset_t *addedrdataset)
{
	return (addoptout(message, cache, node, covers, now, maxttl,
			  ISC_FALSE, ISC_FALSE, addedrdataset));
}

isc_result_t
dns_ncache_addoptout(dns_message_t *message, dns_db_t *cache,
		     dns_dbnode_t *node, dns_rdatatype_t covers,
		     isc_stdtime_t now, dns_ttl_t maxttl,
		     isc_boolean_t optout, dns_rdataset_t *addedrdataset)
{
	return (addoptout(message, cache, node, covers, now, maxttl,
			  optout, ISC_TRUE, addedrdataset));
}

static isc_result_t
addoptout(dns_message_t *message, dns_db_t *cache, dns_dbnode_t *node,
	  dns_rdatatype_t covers, isc_stdtime_t now, dns_ttl_t maxttl,
	  isc_boolean_t optout, isc_boolean_t secure,
	  dns_rdataset_t *addedrdataset)
{
	isc_result_t result;
	isc_buffer_t buffer;
	isc_region_t r;
	dns_rdataset_t *rdataset;
	dns_rdatatype_t type;
	dns_name_t *name;
	dns_ttl_t ttl;
	dns_trust_t trust;
	dns_rdata_t rdata[DNS_NCACHE_RDATA];
	dns_rdataset_t ncrdataset;
	dns_rdatalist_t ncrdatalist;
	unsigned char data[4096];
	unsigned int next = 0;

	/*
	 * Convert the authority data from 'message' into a negative cache
	 * rdataset, and store it in 'cache' at 'node'.
	 */

	REQUIRE(message != NULL);

	/*
	 * We assume that all data in the authority section has been
	 * validated by the caller.
	 */

	/*
	 * Initialize the list.
	 */
	dns_rdatalist_init(&ncrdatalist);
	ncrdatalist.rdclass = dns_db_class(cache);
	ncrdatalist.covers = covers;
	ncrdatalist.ttl = maxttl;

	/*
	 * Build an ncache rdatas into buffer.
	 */
	ttl = maxttl;
	trust = 0xffff;
	isc_buffer_init(&buffer, data, sizeof(data));
	if (message->counts[DNS_SECTION_AUTHORITY])
		result = dns_message_firstname(message, DNS_SECTION_AUTHORITY);
	else
		result = ISC_R_NOMORE;
	while (result == ISC_R_SUCCESS) {
		name = NULL;
		dns_message_currentname(message, DNS_SECTION_AUTHORITY,
					&name);
		if ((name->attributes & DNS_NAMEATTR_NCACHE) != 0) {
			for (rdataset = ISC_LIST_HEAD(name->list);
			     rdataset != NULL;
			     rdataset = ISC_LIST_NEXT(rdataset, link)) {
				if ((rdataset->attributes &
				     DNS_RDATASETATTR_NCACHE) == 0)
					continue;
				type = rdataset->type;
				if (type == dns_rdatatype_rrsig)
					type = rdataset->covers;
				if (type == dns_rdatatype_soa ||
				    type == dns_rdatatype_nsec ||
				    type == dns_rdatatype_nsec3) {
					if (ttl > rdataset->ttl)
						ttl = rdataset->ttl;
					if (trust > rdataset->trust)
						trust = rdataset->trust;
					/*
					 * Copy the owner name to the buffer.
					 */
					dns_name_toregion(name, &r);
					result = isc_buffer_copyregion(&buffer,
								       &r);
					if (result != ISC_R_SUCCESS)
						return (result);
					/*
					 * Copy the type to the buffer.
					 */
					isc_buffer_availableregion(&buffer,
								   &r);
					if (r.length < 3)
						return (ISC_R_NOSPACE);
					isc_buffer_putuint16(&buffer,
							     rdataset->type);
					isc_buffer_putuint8(&buffer,
					       (unsigned char)rdataset->trust);
					/*
					 * Copy the rdataset into the buffer.
					 */
					result = copy_rdataset(rdataset,
							       &buffer);
					if (result != ISC_R_SUCCESS)
						return (result);

					if (next >= DNS_NCACHE_RDATA)
						return (ISC_R_NOSPACE);
					dns_rdata_init(&rdata[next]);
					isc_buffer_remainingregion(&buffer, &r);
					rdata[next].data = r.base;
					rdata[next].length = r.length;
					rdata[next].rdclass =
						ncrdatalist.rdclass;
					rdata[next].type = 0;
					rdata[next].flags = 0;
					ISC_LIST_APPEND(ncrdatalist.rdata,
							&rdata[next], link);
					isc_buffer_forward(&buffer, r.length);
					next++;
				}
			}
		}
		result = dns_message_nextname(message, DNS_SECTION_AUTHORITY);
	}
	if (result != ISC_R_NOMORE)
		return (result);

	if (trust == 0xffff) {
		if ((message->flags & DNS_MESSAGEFLAG_AA) != 0 &&
		    message->counts[DNS_SECTION_ANSWER] == 0) {
			/*
			 * The response has aa set and we haven't followed
			 * any CNAME or DNAME chains.
			 */
			trust = dns_trust_authauthority;
		} else
			trust = dns_trust_additional;
		ttl = 0;
	}

	INSIST(trust != 0xffff);

	ncrdatalist.ttl = ttl;

	dns_rdataset_init(&ncrdataset);
	RUNTIME_CHECK(dns_rdatalist_tordataset(&ncrdatalist, &ncrdataset)
		      == ISC_R_SUCCESS);
	if (!secure && trust > dns_trust_answer)
		trust = dns_trust_answer;
	ncrdataset.trust = trust;
	ncrdataset.attributes |= DNS_RDATASETATTR_NEGATIVE;
	if (message->rcode == dns_rcode_nxdomain)
		ncrdataset.attributes |= DNS_RDATASETATTR_NXDOMAIN;
	if (optout)
		ncrdataset.attributes |= DNS_RDATASETATTR_OPTOUT;

	return (dns_db_addrdataset(cache, node, NULL, now, &ncrdataset,
				   0, addedrdataset));
}

isc_result_t
dns_ncache_towire(dns_rdataset_t *rdataset, dns_compress_t *cctx,
		  isc_buffer_t *target, unsigned int options,
		  unsigned int *countp)
{
	dns_rdata_t rdata = DNS_RDATA_INIT;
	isc_result_t result;
	isc_region_t remaining, tavailable;
	isc_buffer_t source, savedbuffer, rdlen;
	dns_name_t name;
	dns_rdatatype_t type;
	unsigned int i, rcount, count;

	/*
	 * Convert the negative caching rdataset 'rdataset' to wire format,
	 * compressing names as specified in 'cctx', and storing the result in
	 * 'target'.
	 */

	REQUIRE(rdataset != NULL);
	REQUIRE(rdataset->type == 0);
	REQUIRE((rdataset->attributes & DNS_RDATASETATTR_NEGATIVE) != 0);

	savedbuffer = *target;
	count = 0;

	result = dns_rdataset_first(rdataset);
	while (result == ISC_R_SUCCESS) {
		dns_rdataset_current(rdataset, &rdata);
		isc_buffer_init(&source, rdata.data, rdata.length);
		isc_buffer_add(&source, rdata.length);
		dns_name_init(&name, NULL);
		isc_buffer_remainingregion(&source, &remaining);
		dns_name_fromregion(&name, &remaining);
		INSIST(remaining.length >= name.length);
		isc_buffer_forward(&source, name.length);
		remaining.length -= name.length;

		INSIST(remaining.length >= 5);
		type = isc_buffer_getuint16(&source);
		isc_buffer_forward(&source, 1);
		rcount = isc_buffer_getuint16(&source);

		for (i = 0; i < rcount; i++) {
			/*
			 * Get the length of this rdata and set up an
			 * rdata structure for it.
			 */
			isc_buffer_remainingregion(&source, &remaining);
			INSIST(remaining.length >= 2);
			dns_rdata_reset(&rdata);
			rdata.length = isc_buffer_getuint16(&source);
			isc_buffer_remainingregion(&source, &remaining);
			rdata.data = remaining.base;
			rdata.type = type;
			rdata.rdclass = rdataset->rdclass;
			INSIST(remaining.length >= rdata.length);
			isc_buffer_forward(&source, rdata.length);

			if ((options & DNS_NCACHETOWIRE_OMITDNSSEC) != 0 &&
			    dns_rdatatype_isdnssec(type))
				continue;

			/*
			 * Write the name.
			 */
			dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
			result = dns_name_towire(&name, cctx, target);
			if (result != ISC_R_SUCCESS)
				goto rollback;

			/*
			 * See if we have space for type, class, ttl, and
			 * rdata length.  Write the type, class, and ttl.
			 */
			isc_buffer_availableregion(target, &tavailable);
			if (tavailable.length < 10) {
				result = ISC_R_NOSPACE;
				goto rollback;
			}
			isc_buffer_putuint16(target, type);
			isc_buffer_putuint16(target, rdataset->rdclass);
			isc_buffer_putuint32(target, rdataset->ttl);

			/*
			 * Save space for rdata length.
			 */
			rdlen = *target;
			isc_buffer_add(target, 2);

			/*
			 * Write the rdata.
			 */
			result = dns_rdata_towire(&rdata, cctx, target);
			if (result != ISC_R_SUCCESS)
				goto rollback;

			/*
			 * Set the rdata length field to the compressed
			 * length.
			 */
			INSIST((target->used >= rdlen.used + 2) &&
			       (target->used - rdlen.used - 2 < 65536));
			isc_buffer_putuint16(&rdlen,
					     (isc_uint16_t)(target->used -
							    rdlen.used - 2));

			count++;
		}
		INSIST(isc_buffer_remaininglength(&source) == 0);
		result = dns_rdataset_next(rdataset);
		dns_rdata_reset(&rdata);
	}
	if (result != ISC_R_NOMORE)
		goto rollback;

	*countp = count;

	return (ISC_R_SUCCESS);

 rollback:
	INSIST(savedbuffer.used < 65536);
	dns_compress_rollback(cctx, (isc_uint16_t)savedbuffer.used);
	*countp = 0;
	*target = savedbuffer;

	return (result);
}

static void
rdataset_disassociate(dns_rdataset_t *rdataset) {
	UNUSED(rdataset);
}

static isc_result_t
rdataset_first(dns_rdataset_t *rdataset) {
	unsigned char *raw = rdataset->private3;
	unsigned int count;

	count = raw[0] * 256 + raw[1];
	if (count == 0) {
		rdataset->private5 = NULL;
		return (ISC_R_NOMORE);
	}
	raw += 2;
	/*
	 * The privateuint4 field is the number of rdata beyond the cursor
	 * position, so we decrement the total count by one before storing
	 * it.
	 */
	count--;
	rdataset->privateuint4 = count;
	rdataset->private5 = raw;

	return (ISC_R_SUCCESS);
}

static isc_result_t
rdataset_next(dns_rdataset_t *rdataset) {
	unsigned int count;
	unsigned int length;
	unsigned char *raw;

	count = rdataset->privateuint4;
	if (count == 0)
		return (ISC_R_NOMORE);
	count--;
	rdataset->privateuint4 = count;
	raw = rdataset->private5;
	length = raw[0] * 256 + raw[1];
	raw += length + 2;
	rdataset->private5 = raw;

	return (ISC_R_SUCCESS);
}

static void
rdataset_current(dns_rdataset_t *rdataset, dns_rdata_t *rdata) {
	unsigned char *raw = rdataset->private5;
	isc_region_t r;

	REQUIRE(raw != NULL);

	r.length = raw[0] * 256 + raw[1];
	raw += 2;
	r.base = raw;
	dns_rdata_fromregion(rdata, rdataset->rdclass, rdataset->type, &r);
}

static void
rdataset_clone(dns_rdataset_t *source, dns_rdataset_t *target) {
	*target = *source;

	/*
	 * Reset iterator state.
	 */
	target->privateuint4 = 0;
	target->private5 = NULL;
}

static unsigned int
rdataset_count(dns_rdataset_t *rdataset) {
	unsigned char *raw = rdataset->private3;
	unsigned int count;

	count = raw[0] * 256 + raw[1];

	return (count);
}

static void
rdataset_settrust(dns_rdataset_t *rdataset, dns_trust_t trust) {
	unsigned char *raw = rdataset->private3;

	raw[-1] = (unsigned char)trust;
}

static dns_rdatasetmethods_t rdataset_methods = {
	rdataset_disassociate,
	rdataset_first,
	rdataset_next,
	rdataset_current,
	rdataset_clone,
	rdataset_count,
	NULL,
	NULL,
	NULL,
	NULL,
	NULL,
	NULL,
	NULL,
	rdataset_settrust,
	NULL,
	NULL
};

isc_result_t
dns_ncache_getrdataset(dns_rdataset_t *ncacherdataset, dns_name_t *name,
		       dns_rdatatype_t type, dns_rdataset_t *rdataset)
{
	isc_result_t result;
	dns_rdata_t rdata = DNS_RDATA_INIT;
	isc_region_t remaining;
	isc_buffer_t source;
	dns_name_t tname;
	dns_rdatatype_t ttype;
	dns_trust_t trust = dns_trust_none;
	dns_rdataset_t clone;

	REQUIRE(ncacherdataset != NULL);
	REQUIRE(ncacherdataset->type == 0);
	REQUIRE((ncacherdataset->attributes & DNS_RDATASETATTR_NEGATIVE) != 0);
	REQUIRE(name != NULL);
	REQUIRE(!dns_rdataset_isassociated(rdataset));
	REQUIRE(type != dns_rdatatype_rrsig);

	dns_rdataset_init(&clone);
	dns_rdataset_clone(ncacherdataset, &clone);
	result = dns_rdataset_first(&clone);
	while (result == ISC_R_SUCCESS) {
		dns_rdataset_current(&clone, &rdata);
		isc_buffer_init(&source, rdata.data, rdata.length);
		isc_buffer_add(&source, rdata.length);
		dns_name_init(&tname, NULL);
		isc_buffer_remainingregion(&source, &remaining);
		dns_name_fromregion(&tname, &remaining);
		INSIST(remaining.length >= tname.length);
		isc_buffer_forward(&source, tname.length);
		remaining.length -= tname.length;

		INSIST(remaining.length >= 3);
		ttype = isc_buffer_getuint16(&source);

		if (ttype == type && dns_name_equal(&tname, name)) {
			trust = isc_buffer_getuint8(&source);
			INSIST(trust <= dns_trust_ultimate);
			isc_buffer_remainingregion(&source, &remaining);
			break;
		}
		result = dns_rdataset_next(&clone);
		dns_rdata_reset(&rdata);
	}
	dns_rdataset_disassociate(&clone);
	if (result == ISC_R_NOMORE)
		return (ISC_R_NOTFOUND);
	if (result != ISC_R_SUCCESS)
		return (result);

	INSIST(remaining.length != 0);

	rdataset->methods = &rdataset_methods;
	rdataset->rdclass = ncacherdataset->rdclass;
	rdataset->type = type;
	rdataset->covers = 0;
	rdataset->ttl = ncacherdataset->ttl;
	rdataset->trust = trust;
	rdataset->private1 = NULL;
	rdataset->private2 = NULL;

	rdataset->private3 = remaining.base;

	/*
	 * Reset iterator state.
	 */
	rdataset->privateuint4 = 0;
	rdataset->private5 = NULL;
	rdataset->private6 = NULL;
	return (ISC_R_SUCCESS);
}

isc_result_t
dns_ncache_getsigrdataset(dns_rdataset_t *ncacherdataset, dns_name_t *name,
			  dns_rdatatype_t covers, dns_rdataset_t *rdataset)
{
	dns_name_t tname;
	dns_rdata_rrsig_t rrsig;
	dns_rdata_t rdata = DNS_RDATA_INIT;
	dns_rdataset_t clone;
	dns_rdatatype_t type;
	dns_trust_t trust = dns_trust_none;
	isc_buffer_t source;
	isc_region_t remaining, sigregion;
	isc_result_t result;
	unsigned char *raw;
	unsigned int count;

	REQUIRE(ncacherdataset != NULL);
	REQUIRE(ncacherdataset->type == 0);
	REQUIRE((ncacherdataset->attributes & DNS_RDATASETATTR_NEGATIVE) != 0);
	REQUIRE(name != NULL);
	REQUIRE(!dns_rdataset_isassociated(rdataset));

	dns_rdataset_init(&clone);
	dns_rdataset_clone(ncacherdataset, &clone);
	result = dns_rdataset_first(&clone);
	while (result == ISC_R_SUCCESS) {
		dns_rdataset_current(&clone, &rdata);
		isc_buffer_init(&source, rdata.data, rdata.length);
		isc_buffer_add(&source, rdata.length);
		dns_name_init(&tname, NULL);
		isc_buffer_remainingregion(&source, &remaining);
		dns_name_fromregion(&tname, &remaining);
		INSIST(remaining.length >= tname.length);
		isc_buffer_forward(&source, tname.length);
		isc_region_consume(&remaining, tname.length);

		INSIST(remaining.length >= 2);
		type = isc_buffer_getuint16(&source);
		isc_region_consume(&remaining, 2);

		if (type != dns_rdatatype_rrsig ||
		    !dns_name_equal(&tname, name)) {
			result = dns_rdataset_next(&clone);
			dns_rdata_reset(&rdata);
			continue;
		}

		INSIST(remaining.length >= 1);
		trust = isc_buffer_getuint8(&source);
		INSIST(trust <= dns_trust_ultimate);
		isc_region_consume(&remaining, 1);

		raw = remaining.base;
		count = raw[0] * 256 + raw[1];
		INSIST(count > 0);
		raw += 2;
		sigregion.length = raw[0] * 256 + raw[1];
		raw += 2;
		sigregion.base = raw;
		dns_rdata_reset(&rdata);
		dns_rdata_fromregion(&rdata, rdataset->rdclass,
				     dns_rdatatype_rrsig, &sigregion);
		(void)dns_rdata_tostruct(&rdata, &rrsig, NULL);
		if (rrsig.covered == covers) {
			isc_buffer_remainingregion(&source, &remaining);
			break;
		}

		result = dns_rdataset_next(&clone);
		dns_rdata_reset(&rdata);
	}
	dns_rdataset_disassociate(&clone);
	if (result == ISC_R_NOMORE)
		return (ISC_R_NOTFOUND);
	if (result != ISC_R_SUCCESS)
		return (result);

	INSIST(remaining.length != 0);

	rdataset->methods = &rdataset_methods;
	rdataset->rdclass = ncacherdataset->rdclass;
	rdataset->type = dns_rdatatype_rrsig;
	rdataset->covers = covers;
	rdataset->ttl = ncacherdataset->ttl;
	rdataset->trust = trust;
	rdataset->private1 = NULL;
	rdataset->private2 = NULL;

	rdataset->private3 = remaining.base;

	/*
	 * Reset iterator state.
	 */
	rdataset->privateuint4 = 0;
	rdataset->private5 = NULL;
	rdataset->private6 = NULL;
	return (ISC_R_SUCCESS);
}

void
dns_ncache_current(dns_rdataset_t *ncacherdataset, dns_name_t *found,
		   dns_rdataset_t *rdataset)
{
	dns_rdata_t rdata = DNS_RDATA_INIT;
	dns_trust_t trust;
	isc_region_t remaining, sigregion;
	isc_buffer_t source;
	dns_name_t tname;
	dns_rdatatype_t type;
	unsigned int count;
	dns_rdata_rrsig_t rrsig;
	unsigned char *raw;

	REQUIRE(ncacherdataset != NULL);
	REQUIRE(ncacherdataset->type == 0);
	REQUIRE((ncacherdataset->attributes & DNS_RDATASETATTR_NEGATIVE) != 0);
	REQUIRE(found != NULL);
	REQUIRE(!dns_rdataset_isassociated(rdataset));

	dns_rdataset_current(ncacherdataset, &rdata);
	isc_buffer_init(&source, rdata.data, rdata.length);
	isc_buffer_add(&source, rdata.length);

	dns_name_init(&tname, NULL);
	isc_buffer_remainingregion(&source, &remaining);
	dns_name_fromregion(found, &remaining);
	INSIST(remaining.length >= found->length);
	isc_buffer_forward(&source, found->length);
	remaining.length -= found->length;

	INSIST(remaining.length >= 5);
	type = isc_buffer_getuint16(&source);
	trust = isc_buffer_getuint8(&source);
	INSIST(trust <= dns_trust_ultimate);
	isc_buffer_remainingregion(&source, &remaining);

	rdataset->methods = &rdataset_methods;
	rdataset->rdclass = ncacherdataset->rdclass;
	rdataset->type = type;
	if (type == dns_rdatatype_rrsig) {
		/*
		 * Extract covers from RRSIG.
		 */
		raw = remaining.base;
		count = raw[0] * 256 + raw[1];
		INSIST(count > 0);
		raw += 2;
		sigregion.length = raw[0] * 256 + raw[1];
		raw += 2;
		sigregion.base = raw;
		dns_rdata_reset(&rdata);
		dns_rdata_fromregion(&rdata, rdataset->rdclass,
				     rdataset->type, &sigregion);
		(void)dns_rdata_tostruct(&rdata, &rrsig, NULL);
		rdataset->covers = rrsig.covered;
	} else
		rdataset->covers = 0;
	rdataset->ttl = ncacherdataset->ttl;
	rdataset->trust = trust;
	rdataset->private1 = NULL;
	rdataset->private2 = NULL;

	rdataset->private3 = remaining.base;

	/*
	 * Reset iterator state.
	 */
	rdataset->privateuint4 = 0;
	rdataset->private5 = NULL;
	rdataset->private6 = NULL;
}