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with 2250 additions and 254 deletions
Makefile deleted 100644 → 0
View file @ 642eb531
include config.mk
include platform.mk
# Targets
all: info lib daemon modules
install: lib-install daemon-install modules-install etc-install
check: all tests
clean: contrib-clean lib-clean daemon-clean modules-clean tests-clean doc-clean bench-clean
doc: doc-html
.PHONY: all install check clean doc info
# Options
ifdef COVERAGE
BUILD_CFLAGS += --coverage
endif
# Dependencies
$(eval $(call find_lib,libknot,2.3.1,yes))
$(eval $(call find_lib,libdnssec,2.3.1,yes))
$(eval $(call find_lib,libzscanner,2.3.1,yes))
$(eval $(call find_lib,lmdb))
$(eval $(call find_lib,libuv,1.0,yes))
$(eval $(call find_lib,nettle,,yes))
$(eval $(call find_alt,lua,luajit))
$(eval $(call find_lib,cmocka))
$(eval $(call find_bin,doxygen))
$(eval $(call find_bin,sphinx-build))
$(eval $(call find_lib,libmemcached,1.0))
$(eval $(call find_lib,hiredis,,yes))
$(eval $(call find_lib,socket_wrapper))
$(eval $(call find_lib,libsystemd,227))
$(eval $(call find_lib,gnutls))
# Lookup SONAME
$(eval $(call find_soname,libknot))
$(eval $(call find_soname,libzscanner))
ifeq ($(libknot_SONAME),)
$(error "Unable to resolve libknot_SONAME, update find_soname in platform.mk")
endif
ifeq ($(libzscanner_SONAME),)
$(error "Unable to resolve libzscanner_SONAME, update find_some in platform.mk")
endif
# Find Go version and platform
GO_VERSION := $(shell $(GO) version 2>/dev/null)
ifeq ($(GO_VERSION),)
GO_VERSION := 0
else
GO_PLATFORM := $(word 2,$(subst /, ,$(word 4,$(GO_VERSION))))
GO_VERSION := $(subst .,,$(subst go,,$(word 3,$(GO_VERSION))))
endif
$(eval $(call find_ver,go,$(GO_VERSION),16))
# Check if Go is able to build shared libraries
ifeq ($(HAS_go),yes)
ifneq ($(GO_PLATFORM),$(filter $(GO_PLATFORM),amd64 386 arm arm64))
HAS_go := no
endif
else
$(eval $(call find_ver,go,$(GO_VERSION),15))
ifeq ($HAS_go,yes)
ifneq ($(GO_PLATFORM),$(filter $(GO_PLATFORM),arm amd64))
HAS_go := no
endif
endif
endif
# Work around luajit on OS X
ifeq ($(PLATFORM), Darwin)
ifneq (,$(findstring luajit, $(lua_LIBS)))
lua_LIBS += -pagezero_size 10000 -image_base 100000000
endif
endif
BUILD_CFLAGS += $(libknot_CFLAGS) $(libuv_CFLAGS) $(nettle_CFLAGS) $(cmocka_CFLAGS) $(lua_CFLAGS) $(libdnssec_CFLAGS) $(libsystemd_CFLAGS)
BUILD_CFLAGS += $(addprefix -I,$(wildcard contrib/ccan/*) contrib/murmurhash3)
# Check if it has libknot 2.3.0 and nettle to support DNS cookies
$(eval $(call find_alt,knot230,libknot,2.3))
ifeq ($(HAS_nettle)|$(HAS_knot230),yes|yes)
BUILD_CFLAGS += -DENABLE_COOKIES
ENABLE_COOKIES := yes
endif
# Overview
info:
$(info Target: Knot DNS Resolver $(VERSION)-$(PLATFORM))
$(info Compiler: $(CC) $(BUILD_CFLAGS))
$(info )
$(info Variables)
$(info ---------)
$(info HARDENING: $(HARDENING))
$(info BUILDMODE: $(BUILDMODE))
$(info PREFIX: $(PREFIX))
$(info PREFIX: $(PREFIX))
$(info DESTDIR: $(DESTDIR))
$(info BINDIR: $(BINDIR))
$(info SBINDIR: $(SBINDIR))
$(info LIBDIR: $(LIBDIR))
$(info ETCDIR: $(ETCDIR))
$(info INCLUDEDIR: $(INCLUDEDIR))
$(info MODULEDIR: $(MODULEDIR))
$(info )
$(info Core Dependencies)
$(info ------------)
$(info [$(HAS_libknot)] libknot (lib))
$(info [yes] $(if $(filter $(HAS_lmdb),yes),system,embedded) lmdb (lib))
$(info [$(HAS_lua)] luajit (daemon))
$(info [$(HAS_libuv)] libuv (daemon))
$(info [$(HAS_gnutls)] libgnutls (daemon))
$(info [$(HAS_nettle)] nettle (DNS cookies))
$(info )
$(info Optional)
$(info --------)
$(info [$(HAS_doxygen)] doxygen (doc))
$(info [$(HAS_go)] go (modules/go, Go buildmode=c-shared support))
$(info [$(HAS_libmemcached)] libmemcached (modules/memcached))
$(info [$(HAS_hiredis)] hiredis (modules/redis))
$(info [$(HAS_cmocka)] cmocka (tests/unit))
$(info [$(HAS_libsystemd)] systemd (daemon))
$(info )
ifeq ($(HAS_libknot),no)
$(error libknot >= 2.3.1 required)
endif
ifeq ($(HAS_libzscanner),no)
$(error libzscanner >= 2.3.1 required)
endif
ifeq ($(HAS_libdnssec),no)
$(error libdnssec >= 2.3.1 required)
endif
ifeq ($(HAS_libuv),no)
$(error libuv >= 1.0 required)
endif
# Installation directories
$(DESTDIR)$(MODULEDIR):
$(INSTALL) -d $@
$(DESTDIR)$(ETCDIR):
$(INSTALL) -m 0750 -d $@
# Sub-targets
include contrib/contrib.mk
include lib/lib.mk
include daemon/daemon.mk
include modules/modules.mk
include tests/tests.mk
include doc/doc.mk
include etc/etc.mk
include bench/bench.mk
NEWS
View file @ 8c3183c5
Knot Resolver 1.x.y (2016-xx-yy)
Knot Resolver 6.0.12 (2025-0m-dd)
=================================
Bugfixes
--------
- /management/unix-socket: revert to absolute path (#926, !1664)
Knot Resolver 6.0.11 (2025-02-26)
=================================
Bugfixes
--------
- manager: avoid an uncommon startup race in policy-loader (!1653)
[WARN] exited: policy-loader (exit status 0; not expected)
- manager: fix processes watchdog errors during shutdown (!1651)
- /cache/prefill/*/ca_file: fix setting this attribute (!1655)
Improvements
------------
- manager: allow multiple instances with different rundirs (!1656)
- tests: disable problematic config.http test (#925, !1662)
- /management/unix-socket: allow path relative to rundir (!1657)
- validator: accept a confusing NODATA proof with insecure delegation (!1659)
Knot Resolver 6.0.10 (2025-01-20)
=================================
Improvements
------------
- avoid multiple log lines when IPv6 isn't available (!1633)
- manager: fix startup on Linux without libsystemd (!1608)
- auto-reload TLS certificate files (!1626)
- Can be configured using the ``/network/tls/files-watchdog`` option. (!1645)
- reload TLS certificate files even if the configuration has not changed (!1644)
- kresctl: bash command-line TAB completion (!1622)
- add request prioritization (defer) to mitigate DoS attacks (!1641)
- views: allow overriding price-factor (!1646)
Knot Resolver 6.0.9 (2024-11-11)
================================
Improvements
------------
- rate-limiting: add these options, mechanism, docs (!1624)
- manager: secret for TLS session resumption via ticket (RFC5077) (!1567)
The manager creates and sets the secret for all running ``kresd`` workers.
The secret is created automatically if the user does not configure their own secret in the configuration.
This means that the workers will be able to resume each other's TLS sessions, regardless of whether the user has configured it to do so.
- answer NOTIMPL for meta-types and non-IN RR classes (!1589)
- views: improve interaction with old-style policies (!1576)
- stats: add stale answer counter 'answer.stale' (!1591)
- extended_errors: answer with EDE in more cases (!1585, !1588, !1590, !1592)
- local-data: make DNAMEs work, i.e. generate CNAMEs (!1609)
- daemon: use connected UDP sockets by default (#326, !1618)
- docker: multiplatform builds (#922, !1623)
- docker: shared VOLUMEs are prepared for configuration and cache (!1625, !1627)
Configuration path was changed to standard ``/etc/knot-resolver/config.yaml``.
Bugfixes
--------
- daemon/proxyv2: fix informing the engine about TCP/TLS from the actual client (!1578)
- forward: fix wrong pin-sha256 length; also log pins on mismatch (!1601, #813)
Incompatible changes
--------------------
- -f/--forks is removed (#631, !1602)
- gnutls < 3.4 support is dropped, released over 9 years ago (!1601)
- libuv < 1.27 support is dropped, released over 5 years ago (!1618)
Knot Resolver 6.0.8 (2024-07-23)
================================
Security
--------
- reduce buffering of transmitted data, especially TCP-based in userspace
Also expose some of the new tweaks in lua:
- (require 'ffi').C.the_worker.engine.net.tcp.user_timeout = 1000
- (require 'ffi').C.the_worker.engine.net.listen_{tcp,udp}_buflens.{snd,rcv}
Packaging
---------
- all packages:
- remove unused dependency on `libedit` (!1553)
- deb packages:
- packages ``knot-resolver-core`` and ``knot-resolver-manager`` have
been merged into a single ``knot-resolver6`` package. Suffix packages
``knot-resolver-*`` have been renamed to ``knot-resolver6-*``. This
change _should_ be transparent, but please do let us know if you
encounter any issues while updating. (!1549)
- package ``python3-prometheus-client`` is now only an optional dependency
- rpm packages:
- packages ``knot-resolver-core`` and ``knot-resolver-manager`` have
been merged into a single ``knot-resolver`` package. This change
_should_ be transparent, but please do let us know if you encounter
any issues while updating. (!1549)
- bugfix: do not overwrite config.yaml (!1525)
- package ``python3-prometheus_client`` is now only an optional dependency
- arch package:
- fix after they renamed a dependency (!1536)
Improvements
------------
- TLS (DoT, DoH): respect crypto policy overrides in OS (!1526)
- manager: export metrics to JSON via management HTTP API (!1527)
- JSON is the new default metrics output format
- the ``prometheus-client`` Python package is now an optional dependency, required only for Prometheus export to work
- cache: prefetching records
- predict module: prefetching expiring records moved to prefetch module
- prefetch module: new module to prefetch expiring records
- stats: add separate metrics for IPv6 and IPv4 (!1545)
- add the fresh DNSSEC root key "KSK-2024" already, Key ID 38696 (!1556)
- manager: policy-loader: new component for separate loading of policy rules (!1540)
The ``policy-loader`` ensures that configured policies are loaded into the rules database
where they are made available to all running kresd workers. This loading is no longer done
by all kresd workers as it was before, so this should significantly improve the resolver's
startup/reload time when loading large sets of policy rules, e.g. large RPZs.
Incompatible changes
--------------------
- cache: the ``cache.prediction`` configuration property has been reorganized
into ``cache.prefetch.expiring`` and ``cache.prefetch.prediction``, changing
the default behaviour as well. See the `relevant documentation section
<https://www.knot-resolver.cz/documentation/v6.0.8/config-cache-predict.html>`_
for more.
- libknot <=3.2.x support is dropped (!1565)
Bugfixes
--------
- arch package: fix after they renamed a dependency (!1536)
- fix startup with `dnssec: false` (!1548)
- rpm packages: do not overwrite config.yaml (!1525)
- fix NSEC3 records missing in answer for positive wildcard expansion
with the NSEC3 having over-limit iteration count (#910, !1550)
- views: fix a bug in subnet matching (!1562)
Knot Resolver 6.0.7 (2024-03-27)
================================
Improvements
------------
- manager: clear the cache via management HTTP API (#876, !1491)
- manager: added support for Python 3.12 and removed for 3.7 (!1502)
- manager: use build-time install prefix to execute `kresd` instead of PATH (!1511)
- docs: documentation is now separated into user and developer parts (!1514)
- daemon: ignore UDP requests from ports < 1024 (!1507)
- manager: increase startup timeout for processes (!1518, !1520)
- local-data: increase default DB size to 2G on 64-bit platforms (!1518)
Bugfixes
--------
- fix listening by interface name containing dashes (#900, !1500)
- fix kresctl http request timeout (!1505)
- fix RPZ if it contains apex NS record (!1516)
- fix RPZ if SOA is repated, as usual in AXFR output (!1521)
- avoid RPZ overriding the root SOA (!1521)
- fix on 32-bit systems with 64-bit time_t (!1510)
- fix paths to knot-dns libs if exec_prefix != prefix (!1503)
- manager: add missing early check that neither a custom port nor TLS is set for
authoritative server forwarding (#902, !1505)
Knot Resolver 6.0.6 (2024-02-13)
================================
Security
--------
- CVE-2023-50868: NSEC3 closest encloser proof can exhaust CPU
* validator: lower the NSEC3 iteration limit (150 -> 50)
* validator: similarly also limit excessive NSEC3 salt length
* cache: limit the amount of work on SHA1 in NSEC3 aggressive cache
* validator: limit the amount of work on SHA1 in NSEC3 proofs
* validator: refuse to validate answers with more than 8 NSEC3 records
- CVE-2023-50387 "KeyTrap": DNSSEC verification complexity
could be exploited to exhaust CPU resources and stall DNS resolvers.
Solution boils down mainly to limiting crypto-validations per packet.
We would like to thank Elias Heftrig, Haya Schulmann, Niklas Vogel and Michael Waidner
from the German National Research Center for Applied Cybersecurity ATHENE
for bringing this vulnerability to our attention.
Improvements
------------
- update addresses of B.root-servers.net (!1478)
- tweak the default run_dir on non-Linux (!1481)
Bugfixes
--------
- fix potential SERVFAIL deadlocks if net.ipv6 = false (#880)
- fix validation of RRsets around 64 KiB size; needs libknot >= 3.4 (!1497)
Knot Resolver 6.0.5 (2024-01-09)
================================
6.0.x are "early access" versions,
not generally recommended for production use.
6.0 contains biggest changes in the history of Knot Resolver releases.
You will have to rewrite your configuration. See documentation, in particular:
https://www.knot-resolver.cz/documentation/latest/upgrading-to-6.html
5.x branch longterm support
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Knot Resolver 5.7.4 (2024-07-23)
================================
Security
--------
- reduce buffering of transmitted data, especially TCP-based in userspace
Also expose some of the new tweaks in lua:
(require 'ffi').C.the_worker.engine.net.tcp.user_timeout = 1000
(require 'ffi').C.the_worker.engine.net.listen_{tcp,udp}_buflens.{snd,rcv}
Improvements
------------
- add the fresh DNSSEC root key "KSK-2024" already, Key ID 38696 (!1556)
Incompatible changes
--------------------
- libknot 3.0.x support is dropped (!1558)
Upstream last maintained 3.0.x in spring 2022.
Knot Resolver 5.7.3 (2024-05-30)
================================
Improvements
------------
- stats: add separate metrics for IPv6 and IPv4 (!1544)
Bugfixes
--------
- fix NSEC3 records missing in answer for positive wildcard expansion
with the NSEC3 having over-limit iteration count (#910, !1550)
Knot Resolver 5.7.2 (2024-03-27)
================================
Bugfixes
--------
- fix on 32-bit systems with 64-bit time_t (!1510)
Knot Resolver 5.7.1 (2024-02-13)
================================
Security
--------
- CVE-2023-50868: NSEC3 closest encloser proof can exhaust CPU
* validator: lower the NSEC3 iteration limit (150 -> 50)
* validator: similarly also limit excessive NSEC3 salt length
* cache: limit the amount of work on SHA1 in NSEC3 aggressive cache
* validator: limit the amount of work on SHA1 in NSEC3 proofs
* validator: refuse to validate answers with more than 8 NSEC3 records
- CVE-2023-50387 "KeyTrap": DNSSEC verification complexity
could be exploited to exhaust CPU resources and stall DNS resolvers.
Solution boils down mainly to limiting crypto-validations per packet.
We would like to thank Elias Heftrig, Haya Schulmann, Niklas Vogel and Michael Waidner
from the German National Research Center for Applied Cybersecurity ATHENE
for bringing this vulnerability to our attention.
Improvements
------------
- update addresses of B.root-servers.net (!1478)
Bugfixes
--------
- fix potential SERVFAIL deadlocks if net.ipv6 = false (#880)
Knot Resolver 5.7.0 (2023-08-22)
================================
Security
--------
- avoid excessive TCP reconnections in a few more cases (!1448)
Like before, the remote server had to behave nonsensically in order
to inflict this upon itself, but it might be abusable for DoS.
We thank Ivan Jedek from OryxLabs for reporting this.
CVE-2023-46317 got later assigned to this issue.
Improvements
------------
- forwarding mode: tweak dealing with failures from forwarders,
in particular prefer sending CD=0 upstream (!1392)
Bugfixes
--------
- fix unusual timestamp format in debug dumps of records (!1386)
- adjust linker options; it should help less common platforms (!1384)
- hints module: fix names inside home.arpa. (!1406)
- EDNS padding (RFC 8467) compatibility with knot-dns 3.3 libs (!1422)
Knot Resolver 5.6.0 (2023-01-26)
================================
Security
--------
- avoid excessive TCP reconnections in some cases (!1380)
For example, a DNS server that just closes connections without answer
could cause lots of work for the resolver (and itself, too).
The number of connections could be up to around 100 per client's query.
We thank Xiang Li from NISL Lab, Tsinghua University,
and Xuesong Bai and Qifan Zhang from DSP Lab, UCI.
Improvements
------------
- daemon: feed server selection with more kinds of bad-answer events (!1380)
- cache.max_ttl(): lower the default from six days to one day
and apply both limits to the first uncached answer already (!1323 #127)
- depend on jemalloc, preferably, to improve memory usage (!1353)
- no longer accept DNS messages with trailing data (!1365)
- policy.STUB: avoid applying aggressive DNSSEC denial proofs (!1364)
- policy.STUB: avoid copying +dnssec flag from client to upstream (!1364)
Bugfixes
--------
- policy.DEBUG_IF: don't print client's packet unconditionally (!1366)
Knot Resolver 5.5.3 (2022-09-21)
================================
Security
--------
- fix CPU-expensive DoS by malicious domains - CVE-2022-40188
Improvements
------------
- fix config_tests on macOS (both HW variants)
Knot Resolver 5.5.2 (2022-08-16)
================================
Improvements
------------
- support libknot 3.2 (!1309)
- priming module: hide failures from the default log level (!1310)
- reduce memory usage in some cases (!1328)
Bugfixes
--------
- daemon/http: improve URI checks to fix some proxies (#746, !1311)
- daemon/tls: fix a double-free for some cases of policy.TLS_FORWARD (!1314)
- hints module: improve parsing comments in hosts files (!1315)
- renumber module: fix renumbering with name matching again (#760, !1334)
Knot Resolver 5.5.1 (2022-06-14)
================================
Improvements
------------
- daemon/tls: disable TLS resumption via tickets for TLS <= 1.2 (#742, !1295)
- daemon/http: DoH now responds with proper HTTP codes (#728, !1279)
- renumber module: allow rewriting subnet to a single IP (!1302)
- renumber module: allow arbitrary netmask (!1306)
- nameserver selection algorithm: improve IPv6 avoidance if broken (!1298)
Bugfixes
--------
- modules/dns64: fix incorrect packet writes for cached packets (#727, !1275)
- xdp: make it work also with libknot 3.1 (#735, !1276)
- prefill module: fix lockup when starting multiple idle instances (!1285)
- validator: fix some failing negative NSEC proofs (!1294, #738, #443)
Knot Resolver 5.5.0 (2022-03-15)
================================
Improvements
------------
- extended_errors: module for extended DNS error support, RFC8914 (!1234)
- policy: log policy actions; useful for RPZ debugging (!1239)
- policy: new action policy.IPTRACE for logging request origin (!1239)
- prefill module: prepare for ZONEMD, improve performance (!1225)
- validator: conditionally ignore SHA1 DS, as SHOULD by RFC4509 (!1251)
- lib/resolve: use EDNS padding for outgoing TLS queries (!1254)
- support for PROXYv2 protocol (!1238)
- lib/resolve, policy: new NO_ANSWER flag for not responding to clients (!1257)
Incompatible changes
--------------------
- libknot >= 3.0.2 is required
Bugfixes
--------
- doh2: fix CORS by adding `access-control-allow-origin: *` (!1246)
- net: fix listen by interface - add interface suffix to link-local IPv6 (!1253)
- daemon/tls: fix resumption for outgoing TLS (e.g. TLS_FORWARD) (!1261)
- nameserver selection: fix interaction of timeouts with reboots (#722, !1269)
Knot Resolver 5.4.4 (2022-01-05)
================================
Bugfixes
--------
- fix bad zone cut update in certain cases (e.g. AWS; !1237)
Knot Resolver 5.4.3 (2021-12-01)
================================
Improvements
------------
- lua: add kres.parse_rdata() to parse RDATA from string to wire format (!1233)
- lua: add policy.domains() for exact domain name matching (!1228)
Bugfixes
--------
- policy.rpz: fix origin detection in files without $ORIGIN (!1215)
- lua: log() works again; broken in 5.4.2 (!1223)
- policy: correctly include EDNS0 previously omitted by some actions (!1230)
- edns_keepalive: module is now properly loaded (!1229, thanks Josh Soref!)
Knot Resolver 5.4.2 (2021-10-13)
================================
Improvements
------------
- dns64 module: also map the reverse (PTR) subtree (#478, !1201)
- dns64 module: allow disabling based on client address (#368, !1201)
- dns64 module: allow configuring AAAA subnets not allowed in answer (!1201)
- nameserver selection algorithm: improve IPv6 avoidance if broken (!1207)
Bugfixes
--------
- lua: log() output is visible with default log level again (!1208)
- build: fix when knot-dns headers are on non-standard location (!1210)
Knot Resolver 5.4.1 (2021-08-19)
================================
Improvements
------------
- docker: base image on Debian 11 (!1203)
Bugfixes
--------
- fix build without doh2 support after 5.4.0 (!1197)
- fix policy.DEBUG* logging and -V/--version after 5.4.0 (!1199)
- doh2: ensure memory from unsent streams is freed (!1202)
Knot Resolver 5.4.0 (2021-07-29)
================================
Improvements
------------
- fine grained logging and syslog support (!1181)
- expose HTTP headers for processing DoH requests (!1165)
- improve assertion mechanism for debugging (!1146)
- support apkg tool for packaging workflow (!1178)
- support Knot DNS 3.1 (!1192, !1194)
Bugfixes
--------
- trust_anchors.set_insecure: improve precision (#673, !1177)
- plug memory leaks related to TCP (!1182)
- policy.FLAGS: fix not applying properly in edge cases (!1179)
- fix a crash with older libuv inside timer processing (!1195)
Incompatible changes
--------------------
- see upgrading guide:
https://knot-resolver.readthedocs.io/en/stable/upgrading.html#to-5-4
- legacy DoH implementation configuration in net.listen() was renamed from
kind="doh" to kind="doh_legacy" (!1180)
Knot Resolver 5.3.2 (2021-05-05)
================================
Security
--------
- validator: fix 5.3.1 regression on over-limit NSEC3 edge case (!1169)
Assertion might be triggered by query/answer, potentially DoS.
CVE-2021-40083 was later assigned.
Improvements
------------
- cache: improve handling write errors from LMDB (!1159)
- doh2: improve handling of stream errors (!1164)
Bugfixes
--------
- dnstap module: fix repeated configuration (!1168)
- validator: fix SERVFAIL for some rare dynamic proofs (!1166)
- fix SIGBUS on uncommon ARM machines (unaligned access; !1167, #426)
- cache: better resilience on abnormal termination/restarts (!1172)
- doh2: fix memleak on stream write failures (!1161)
Knot Resolver 5.3.1 (2021-03-31)
================================
Improvements
------------
- policy.STUB: try to avoid TCP (compared to 5.3.0; !1155)
- validator: downgrade NSEC3 records with too many iterations (>150; !1160)
- additional improvements to nameserver selection algorithm (!1154, !1150)
Bugfixes
--------
- dnstap module: don't break request resolution on dnstap errors (!1147)
- cache garbage collector: fix crashes introduced in 5.3.0 (!1153)
- policy.TLS_FORWARD: better avoid dead addresses (#671, !1156)
Knot Resolver 5.3.0 (2021-02-25)
================================
Improvements
------------
- more consistency in using parent-side records for NS addresses (!1097)
- better algorithm for choosing nameservers (!1030, !1126, !1140, !1141, !1143)
- daf module: add daf.clear() (!1114)
- dnstap module: more features and don't log internal requests (!1103)
- dnstap module: include in upstream packages and Docker image (!1110, !1118)
- randomize record order by default, i.e. reorder_RR(true) (!1124)
- prometheus module: transform graphite tags into prometheus labels (!1109)
- avoid excessive logging of UDP replies with sendmmsg (!1138)
Bugfixes
--------
- view: fail config if bad subnet is specified (!1112)
- doh2: fix memory leak (!1117)
- policy.ANSWER: minor fixes, mainly around NODATA answers (!1129)
- http, watchdog modules: fix stability problems (!1136)
Incompatible changes
--------------------
- dnstap module: `log_responses` option gets nested under `client`;
see new docs for config example (!1103)
- libknot >= 2.9 is required
Knot Resolver 5.2.1 (2020-12-09)
================================
Improvements
------------
- doh2: send Cache-Control header with TTL (#617, !1095)
Bugfixes
--------
- fix map() command on 32-bit platforms; regressed in 5.2.0 (!1093)
- doh2: restrict endpoints to doh and dns-query (#636, !1104)
- renumber: map to correct subnet when using multiple rules (!1107)
Knot Resolver 5.2.0 (2020-11-11)
================================
Improvements
------------
- doh2: add native C module for DNS-over-HTTPS (#600, !997)
- xdp: add server-side XDP support for higher UDP performance (#533, !1083)
- lower default EDNS buffer size to 1232 bytes (#538, #300, !920);
see https://www.dnsflagday.net/2020/
- net: split the EDNS buffer size into upstream and downstream (!1026)
- lua-http doh: answer to /dns-query endpoint as well as /doh (!1069)
- improve resiliency against UDP fragmentation attacks (disable PMTUD) (!1061)
- ta_update: warn if there are differences between statically configured
keys and upstream (#251, !1051)
- human readable output in interactive mode was improved
- doc: generate info page (!1079)
- packaging: improve sysusers and tmpfiles support (!1080)
Bugfixes
--------
- avoid an assert() error in stash_rrset() (!1072)
- fix emergency cache locking bug introduced in 5.1.3 (!1078)
- migrate map() command to control sockets; fix systemd integration (!1000)
- fix crash when sending back errors over control socket (!1000)
- fix SERVFAIL while processing forwarded CNAME to a sibling zone (#614, !1070)
Incompatible changes
--------------------
- see upgrading guide:
https://knot-resolver.readthedocs.io/en/stable/upgrading.html#to-5-2
- minor changes in module API
- control socket API commands have to be terminated by "\n"
- graphite: default prefix now contains instance identifier (!1000)
- build: meson >= 0.49 is required (!1082)
Knot Resolver 5.1.3 (2020-09-08)
================================
Improvements
------------
- capabilities are no longer constrained when running as root (!1012)
- cache: add percentage usage to cache.stats() (#580, !1025)
- cache: add number of cache entries to cache.stats() (#510, !1028)
- aarch64 support again, as some systems still didn't work (!1033)
- support building against Knot DNS 3.0 (!1053)
Bugfixes
--------
- tls: fix compilation to support net.tls_sticket_secret() (!1021)
- validator: ignore bogus RRSIGs present in insecure domains (!1022, #587)
- build if libsystemd version isn't detected as integer (#592, !1029)
- validator: more robust reaction on missing RRSIGs (#390, !1020)
- ta_update module: fix broken RFC5011 rollover (!1035)
- garbage collector: avoid keeping multiple copies of cache (!1042)
Knot Resolver 5.1.2 (2020-07-01)
================================
Bugfixes
--------
- hints module: NODATA answers also for non-address queries (!1005)
- tls: send alert to peer if handshake fails (!1007)
- cache: fix interaction between LMDB locks and preallocation (!1013)
- cache garbage collector: fix flushing of messages to logs (!1009)
- cache garbage collector: fix insufficient GC on 32-bit systems (!1009)
- graphite module: do not block resolver on TCP failures (!1014)
- policy.rpz various fixes (!1016): $ORIGIN issues,
precision of warnings, allow answering with multi-RR sets
Knot Resolver 5.1.1 (2020-05-19)
================================
Security
--------
- fix CVE-2020-12667: mitigation for NXNSAttack DNS protocol vulnerability
Bugfixes
--------
- control sockets: recognize newline as command boundary
Knot Resolver 5.1.0 (2020-04-29)
================================
Improvements
------------
- cache garbage collector: reduce filesystem operations when idle (!946)
- policy.DEBUG_ALWAYS and policy.DEBUG_IF for limited verbose logging (!957)
- daemon: improve TCP query latency under heavy TCP load (!968)
- add policy.ANSWER action (!964, #192)
- policy.rpz support fake A/AAAA (!964, #194)
Bugfixes
--------
- cache: missing filesystem support for pre-allocation is no longer fatal (#549)
- lua: policy.rpz() no longer watches the file when watch is set to false (!954)
- fix a strict aliasing problem that might've lead to "miscompilation" (!962)
- fix handling of DNAMEs, especially signed ones (#234, !965)
- lua resolve(): correctly include EDNS0 in the virtual packet (!963)
Custom modules might have been confused by that.
- do not leak bogus data into SERVFAIL answers (#396)
- improve random Lua number generator initialization (!979)
- cache: fix CNAME caching when validation is disabled (#472, !974)
- cache: fix CNAME caching in policy.STUB mode (!974)
- prefill: fix crash caused by race condition with resolver startup (!983)
- webmgmt: use javascript scheme detection for websockets' protocol (#546)
- daf module: fix del(), deny(), drop(), tc(), pass() functions (#553, !966)
- policy and daf modules: expose initial query when evaluating postrules (#556)
- cache: fix some cases of caching answers over 4 KiB (!976)
- docs: support sphinx 3.0.0+ (!978)
Incompatible changes
--------------------
- minor changes in module API; see upgrading guide:
https://knot-resolver.readthedocs.io/en/stable/upgrading.html
Knot Resolver 5.0.1 (2020-02-05)
================================
Bugfixes
--------
- systemd: use correct cache location for garbage collector (#543)
Improvements
------------
- cache: add cache.fssize() lua function to configure entire free disk space on
dedicated cache partition (#524, !932)
Knot Resolver 5.0.0 (2020-01-27)
================================
Incompatible changes
--------------------
- see upgrading guide: https://knot-resolver.readthedocs.io/en/stable/upgrading.html
- systemd sockets are no longer supported (#485)
- net.listen() throws an error if it fails to bind; use freebind option if needed
- control socket location has changed (!922)
- -f/--forks is deprecated (#529, !919)
Improvements
------------
- logging: control-socket commands don't log unless --verbose (#528)
- use SO_REUSEPORT_LB if available (FreeBSD 12.0+)
- lua: remove dependency on lua-socket and lua-sec, used lua-http and cqueues (#512, #521, !894)
- lua: remove dependency on lua-filesystem (#520, !912)
- net.listen(): allow binding to non-local address with freebind option (!898)
- cache: pre-allocate the file to avoid SIGBUS later (not macOS; !917, #525)
- lua: be stricter around nonsense returned from modules (!901)
- user documentation was reorganized and extended (!900, !867)
- multiple config files can be used with --config/-c option (!909)
- lua: stop trying to tweak lua's GC (!201)
- systemd: add SYSTEMD_INSTANCE env variable to identify different instances (!906)
Bugfixes
--------
- correctly use EDNS(0) padding in failed answers (!921)
- policy and daf modules: fix postrules and reroute rules (!901)
- renumber module: don't accidentally zero-out request's .state (!901)
Knot Resolver 4.3.0 (2019-12-04)
================================
Security - CVE-2019-19331
-------------------------
- fix speed of processing large RRsets (DoS, #518)
- improve CNAME chain length accounting (DoS, !899)
Bugfixes
--------
- http module: use SO_REUSEPORT (!879)
- systemd: kresd@.service now properly starts after network interfaces
have been configured with IP addresses after reboot (!884)
- sendmmsg: improve reliability (!704)
- cache: fix crash on insertion via lua for NS and CNAME (!889)
- rpm package: move root.keys to /var/lib/knot-resolver (#513, !888)
Improvements
------------
- increase file-descriptor count limit to maximum allowed value (hard limit; !876)
- watchdog module: support testing a DNS query (and switch C -> lua; !878, !881)
- performance: use sendmmsg syscall towards clients by default (!877)
- performance: avoid excessive getsockname() syscalls (!854)
- performance: lua-related improvements (!874)
- daemon now attempts to drop all capabilities (!896)
- reduce CNAME chain length limit - now <= 12 (!899)
Knot Resolver 4.2.2 (2019-10-07)
================================
Bugfixes
--------
- lua bindings: fix a 4.2.1 regression on 32-bit systems (#514)
which also fixes libknot 2.9 support on all systems
Knot Resolver 4.2.1 (2019-09-26)
================================
Bugfixes
--------
- rebinding module: fix handling some requests, respect ALLOW_LOCAL flag
- fix incorrect SERVFAIL on cached bogus answer for +cd request (!860)
(regression since 4.1.0 release, in less common cases)
- prefill module: allow a different module-loading style (#506)
- validation: trim TTLs by RRSIG's expiration and original TTL (#319, #504)
- NS choice algorithm: fix a regression since 4.0.0 (#497, !868)
- policy: special domains home.arpa. and local. get NXDOMAIN (!855)
Improvements
------------
- add compatibility with (future) libknot 2.9
Knot Resolver 4.2.0 (2019-08-05)
================================
Improvements
------------
- queries without RD bit set are REFUSED by default (!838)
- support forwarding to multiple targets (!825)
Bugfixes
--------
- tls_client: fix issue with TLS session resumption (#489)
- rebinding module: fix another false-positive assertion case (!851)
Module API changes
------------------
- kr_request::add_selected is now really put into answer,
instead of the "duplicate" ::additional field (#490)
Knot Resolver 4.1.0 (2019-07-10)
================================
Security
--------
- fix CVE-2019-10190: do not pass bogus negative answer to client (!827)
- fix CVE-2019-10191: do not cache negative answer with forged QNAME+QTYPE (!839)
Improvements
------------
- new cache garbage collector is available and enabled by default (#257)
This improves cache efficiency on big installations.
- DNS-over-HTTPS: unknown HTTP parameters are ignored to improve compatibility
with non-standard clients (!832)
- DNS-over-HTTPS: answers include `access-control-allow-origin: *` (!823)
which allows JavaScript to use DoH endpoint.
- http module: support named AF_UNIX stream sockets (again)
- aggressive caching is disabled on minimal NSEC* ranges (!826)
This improves cache effectivity with DNSSEC black lies and also accidentally
works around bug in proofs-of-nonexistence from F5 BIG-IP load-balancers.
- aarch64 support, even kernels with ARM64_VA_BITS >= 48 (#216, !797)
This is done by working around a LuaJIT incompatibility. Please report bugs.
- lua tables for C modules are more strict by default, e.g. `nsid.foo`
will throw an error instead of returning `nil` (!797)
- systemd: basic watchdog is now available and enabled by default (#275)
Bugfixes
--------
- TCP to upstream: fix unlikely case of sending out wrong message length (!816)
- http module: fix problems around maintenance of ephemeral certs (!819)
- http module: also send intermediate TLS certificate to clients,
if available and luaossl >= 20181207 (!819)
- send EDNS with SERVFAILs, e.g. on validation failures (#180, !827)
- prefill module: avoid crash on empty zone file (#474, !840)
- rebinding module: avoid excessive iteration on blocked attempts (!842)
- rebinding module: fix crash caused by race condition (!842)
- rebinding module: log each blocked query only in verbose mode (!842)
- cache: automatically clear stale reader locks (!844)
Module API changes
------------------
- lua modules may omit casting parameters of layer functions (!797)
Knot Resolver 4.0.0 (2019-04-18)
================================
Incompatible changes
--------------------
- see upgrading guide: https://knot-resolver.readthedocs.io/en/stable/upgrading.html
- configuration: trust_anchors aliases .file, .config() and .negative were removed (!788)
- configuration: trust_anchors.keyfile_default is no longer accessible (!788)
- daemon: -k/--keyfile and -K/--keyfile-ro options were removed
- meson build system is now used for builds (!771)
- build with embedded LMBD is no longer supported
- default modules dir location has changed
- DNSSEC is enabled by default
- upstream packages for Debian now require systemd
- libknot >= 2.8 is required
- net.list() output format changed (#448)
- net.listen() reports error when address-port pair is in use
- bind to DNS-over-TLS port by default (!792)
- stop versioning libkres library
- default port for web management and APIs changed to 8453
Improvements
------------
- policy.TLS_FORWARD: if hostname is configured, send it on wire (!762)
- hints module: allow configuring the TTL and change default from 0 to 5s
- policy module: policy.rpz() will watch the file for changes by default
- packaging: lua cqueues added to default dependencies where available
- systemd: service is no longer auto-restarted on configuration errors
- always send DO+CD flags upstream, even in insecure zones (#153)
- cache.stats() output is completely new; see docs (!775)
- improve usability of table_print() (!790, !801)
- add DNS-over-HTTPS support (#280)
- docker image supports and exposes DNS-over-HTTPS
Bugfixes
--------
- predict module: load stats module if config didn't specify period (!755)
- trust_anchors: don't do 5011-style updates on anchors from files
that were loaded as unmanaged trust anchors (!753)
- trust_anchors.add(): include these TAs in .summary() (!753)
- policy module: support '#' for separating port numbers, for consistency
- fix startup on macOS+BSD when </dev/null and cqueues installed
- policy.RPZ: log problems from zone-file level of parser as well (#453)
- fix flushing of messages to logs in some cases (notably systemd) (!781)
- fix fallback when SERVFAIL or REFUSED is received from upstream (!784)
- fix crash when dealing with unknown TA key algorithm (#449)
- go insecure due to algorithm support even if DNSKEY is NODATA (!798)
- fix mac addresses in the output of net.interfaces() command (!804)
- http module: fix too early renewal of ephemeral certificates (!808)
Module API changes
------------------
- kr_straddr_split() changed API a bit (compiler will catch that)
- C modules defining `*_layer` or `*_props` symbols need to change a bit
See the upgrading guide for details. It's detected on module load.
Knot Resolver 3.2.1 (2019-01-10)
================================
Bugfixes
--------
- trust_anchors: respect validity time range during TA bootstrap (!748)
- fix TLS rehandshake handling (!739)
- make TLS_FORWARD compatible with GnuTLS 3.3 (!741)
- special thanks to Grigorii Demidov for his long-term work on Knot Resolver!
Improvements
------------
- improve handling of timed out outgoing TCP connections (!734)
- trust_anchors: check syntax of public keys in DNSKEY RRs (!748)
- validator: clarify message about bogus non-authoritative data (!735)
- dnssec validation failures contain more verbose reasoning (!735)
- new function trust_anchors.summary() describes state of DNSSEC TAs (!737),
and logs new state of trust anchors after start up and automatic changes
- trust anchors: refuse revoked DNSKEY even if specified explicitly,
and downgrade missing the SEP bit to a warning
Knot Resolver 3.2.0 (2018-12-17)
================================
New features
------------
- module edns_keepalive to implement server side of RFC 7828 (#408)
- module nsid to implement server side of RFC 5001 (#289)
- module bogus_log provides .frequent() table (!629, credit Ulrich Wisser)
- module stats collects flags from answer messages (!629, credit Ulrich Wisser)
- module view supports multiple rules with identical address/TSIG specification
and keeps trying rules until a "non-chain" action is executed (!678)
- module experimental_dot_auth implements an DNS-over-TLS to auth protocol
(!711, credit Manu Bretelle)
- net.bpf bindings allow advanced users to use eBPF socket filters
Bugfixes
--------
- http module: only run prometheus in parent process if using --forks=N,
as the submodule collects metrics from all sub-processes as well.
- TLS fixes for corner cases (!700, !714, !716, !721, !728)
- fix build with -DNOVERBOSELOG (#424)
- policy.{FORWARD,TLS_FORWARD,STUB}: respect net.ipv{4,6} setting (!710)
- avoid SERVFAILs due to certain kind of NS dependency cycles, again
(#374) this time seen as 'circular dependency' in verbose logs
- policy and view modules do not overwrite result finished requests (!678)
Improvements
------------
- Dockerfile: rework, basing on Debian instead of Alpine
- policy.{FORWARD,TLS_FORWARD,STUB}: give advantage to IPv6
when choosing whom to ask, just as for iteration
- use pseudo-randomness from gnutls instead of internal ISAAC (#233)
- tune the way we deal with non-responsive servers (!716, !723)
- documentation clarifies interaction between policy and view modules (!678, !730)
Module API changes
------------------
- new layer is added: answer_finalize
- kr_request keeps ::qsource.packet beyond the begin layer
- kr_request::qsource.tcp renamed to ::qsource.flags.tcp
- kr_request::has_tls renamed to ::qsource.flags.tls
- kr_zonecut_add(), kr_zonecut_del() and kr_nsrep_sort() changed parameters slightly
Knot Resolver 3.1.0 (2018-11-02)
================================
Incompatible changes
--------------------
- hints.use_nodata(true) by default; that's what most users want
- libknot >= 2.7.2 is required
Improvements
------------
- cache: handle out-of-space SIGBUS slightly better (#197)
- daemon: improve TCP timeout handling (!686)
Bugfixes
--------
- cache.clear('name'): fix some edge cases in API (#401)
- fix error handling from TLS writes (!669)
- avoid SERVFAILs due to certain kind of NS dependency cycles (#374)
Knot Resolver 3.0.0 (2018-08-20)
================================
Incompatible changes
--------------------
- cache: fail lua operations if cache isn't open yet (!639)
By default cache is opened *after* reading the configuration,
and older versions were silently ignoring cache operations.
Valid configuration must open cache using `cache.open()` or `cache.size =`
before executing cache operations like `cache.clear()`.
- libknot >= 2.7.1 is required, which brings also larger API changes
- in case you wrote custom Lua modules, please consult
https://knot-resolver.readthedocs.io/en/latest/lib.html#incompatible-changes-since-3-0-0
- in case you wrote custom C modules, please see compile against
Knot DNS 2.7 and adjust your module according to messages from C compiler
- DNS cookie module (RFC 7873) is not available in this release,
it will be later reworked to reflect development in IEFT dnsop working group
- version module was permanently removed because it was not really used by users;
if you want to receive notifications about new releases please subscribe to
https://lists.nic.cz/postorius/lists/knot-resolver-announce.lists.nic.cz/
Bugfixes
--------
- fix multi-process race condition in trust anchor maintenance (!643)
- ta_sentinel: also consider static trust anchors not managed via RFC 5011
Improvements
------------
- reorder_RR() implementation is brought back
- bring in performance improvements provided by libknot 2.7
- cache.clear() has a new, more powerful API
- cache documentation was improved
- old name "Knot DNS Resolver" is replaced by unambiguous "Knot Resolver"
to prevent confusion with "Knot DNS" authoritative server
Knot Resolver 2.4.1 (2018-08-02)
================================
Security
--------
- fix CVE-2018-10920: Improper input validation bug in DNS resolver component
(security!7, security!9)
Bugfixes
--------
- cache: fix TTL overflow in packet due to min_ttl (#388, security!8)
- TLS session resumption: avoid bad scheduling of rotation (#385)
- HTTP module: fix a regression in 2.4.0 which broke custom certs (!632)
- cache: NSEC3 negative cache even without NS record (#384)
This fixes lower hit rate in NSEC3 zones (since 2.4.0).
- minor TCP and TLS fixes (!623, !624, !626)
Knot Resolver 2.4.0 (2018-07-03)
================================
Incompatible changes
--------------------
- minimal libknot version is now 2.6.7 to pull in latest fixes (#366)
Security
--------
- fix a rare case of zones incorrectly downgraded to insecure status (!576)
New features
------------
- TLS session resumption (RFC 5077), both server and client (!585, #105)
(disabled when compiling with gnutls < 3.5)
- TLS_FORWARD policy uses system CA certificate store by default (!568)
- aggressive caching for NSEC3 zones (!600)
- optional protection from DNS Rebinding attack (module rebinding, !608)
- module bogus_log to log DNSSEC bogus queries without verbose logging (!613)
Bugfixes
--------
- prefill: fix ability to read certificate bundle (!578)
- avoid turning off qname minimization in some cases, e.g. co.uk. (#339)
- fix validation of explicit wildcard queries (#274)
- dns64 module: more properties from the RFC implemented (incl. bug #375)
Improvements
------------
- systemd: multiple enabled kresd instances can now be started using kresd.target
- ta_sentinel: switch to version 14 of the RFC draft (!596)
- support for glibc systems with a non-Linux kernel (!588)
- support per-request variables for Lua modules (!533)
- support custom HTTP endpoints for Lua modules (!527)
Knot Resolver 2.3.0 (2018-04-23)
================================
Security
--------
- fix CVE-2018-1110: denial of service triggered by malformed DNS messages
(!550, !558, security!2, security!4)
- increase resilience against slow lorris attack (security!5)
New features
------------
- new policy.REFUSE to reply REFUSED to clients
Bugfixes
--------
- validation: fix SERVFAIL in case of CNAME to NXDOMAIN in a single zone (!538)
- validation: fix SERVFAIL for DS . query (!544)
- lib/resolve: don't send unnecessary queries to parent zone (!513)
- iterate: fix validation for zones where parent and child share NS (!543)
- TLS: improve error handling and documentation (!536, !555, !559)
Improvements
------------
- prefill: new module to periodically import root zone into cache
(replacement for RFC 7706, !511)
- network_listen_fd: always create end point for supervisor supplied file descriptor
- use CPPFLAGS build environment variable if set (!547)
Knot Resolver 2.2.0 (2018-03-28)
================================
New features
------------
- cache server unavailability to prevent flooding unreachable servers
(Please note that caching algorithm needs further optimization
and will change in further versions but we need to gather operational
experience first.)
Bugfixes
--------
- don't magically -D_FORTIFY_SOURCE=2 in some cases
- allow large responses for outbound over TCP
- fix crash with RR sets with over 255 records
Knot Resolver 2.1.1 (2018-02-23)
================================
Bugfixes
--------
- when iterating, avoid unnecessary queries for NS in insecure parent.
This problem worsened in 2.0.0. (#246)
- prevent UDP packet leaks when using TLS forwarding
- fix the hints module also on some other systems, e.g. Gentoo.
Knot Resolver 2.1.0 (2018-02-16)
================================
Incompatible changes
--------------------
- stats: remove tracking of expiring records (predict uses another way)
- systemd: re-use a single kresd.socket and kresd-tls.socket
- ta_sentinel: implement protocol draft-ietf-dnsop-kskroll-sentinel-01
(our draft-ietf-dnsop-kskroll-sentinel-00 implementation had inverted logic)
- libknot: require version 2.6.4 or newer to get bugfixes for DNS-over-TLS
Bugfixes
--------
- detect_time_jump module: don't clear cache on suspend-resume (#284)
- stats module: fix stats.list() returning nothing, regressed in 2.0.0
- policy.TLS_FORWARD: refusal when configuring with multiple IPs (#306)
- cache: fix broken refresh of insecure records that were about to expire
- fix the hints module on some systems, e.g. Fedora (came back on 2.0.0)
- build with older gnutls (conditionally disable features)
- fix the predict module to work with insecure records & cleanup code
Knot Resolver 2.0.0 (2018-01-31)
================================
Incompatible changes
--------------------
- systemd: change unit files to allow running multiple instances,
deployments with single instance now must use `kresd@1.service`
instead of `kresd.service`; see kresd.systemd(7) for details
- systemd: the directory for cache is now /var/cache/knot-resolver
- unify default directory and user to `knot-resolver`
- directory with trust anchor file specified by -k option must be writeable
- policy module is now loaded by default to enforce RFC 6761;
see documentation for policy.PASS if you use locally-served DNS zones
- drop support for alternative cache backends memcached, redis,
and for Lua bindings for some specific cache operations
- REORDER_RR option is not implemented (temporarily)
New features
------------
- aggressive caching of validated records (RFC 8198) for NSEC zones;
thanks to ICANN for sponsoring this work.
- forwarding over TLS, authenticated by SPKI pin or certificate.
policy.TLS_FORWARD pipelines queries out-of-order over shared TLS connection
Beware: Some resolvers do not support out-of-order query processing.
TLS forwarding to such resolvers will lead to slower resolution or failures.
- trust anchors: you may specify a read-only file via -K or --keyfile-ro
- trust anchors: at build-time you may set KEYFILE_DEFAULT (read-only)
- ta_sentinel module implements draft ietf-dnsop-kskroll-sentinel-00,
enabled by default
- serve_stale module is prototype, subject to change
- extended API for Lua modules
Bugfixes
--------
- fix build on osx - regressed in 1.5.3 (different linker option name)
Knot Resolver 1.5.3 (2018-01-23)
================================
Bugfixes
--------
- fix the hints module on some systems, e.g. Fedora.
Symptom: `undefined symbol: engine_hint_root_file`
Knot Resolver 1.5.2 (2018-01-22)
================================
Security
--------
- fix CVE-2018-1000002: insufficient DNSSEC validation, allowing
attackers to deny existence of some data by forging packets.
Some combinations pointed out in RFC 6840 sections 4.1 and 4.3
were not taken into account.
Bugfixes
--------
- memcached: fix fallout from module rename in 1.5.1
Knot Resolver 1.5.1 (2017-12-12)
================================
Incompatible changes
--------------------
- script supervisor.py was removed, please migrate to a real process manager
- module ketcd was renamed to etcd for consistency
- module kmemcached was renamed to memcached for consistency
Bugfixes
--------
- fix SIGPIPE crashes (#271)
- tests: work around out-of-space for platforms with larger memory pages
- lua: fix mistakes in bindings affecting 1.4.0 and 1.5.0 (and 1.99.1-alpha),
potentially causing problems in dns64 and workarounds modules
- predict module: various fixes (!399)
Improvements
------------
- add priming module to implement RFC 8109, enabled by default (#220)
- add modules helping with system time problems, enabled by default;
for details see documentation of detect_time_skew and detect_time_jump
Knot Resolver 1.5.0 (2017-11-02)
================================
Bugfixes
--------
- fix loading modules on Darwin
Improvements
------------
- new module ta_signal_query supporting Signaling Trust Anchor Knowledge
using Keytag Query (RFC 8145 section 5); it is enabled by default
- attempt validation for more records but require it for fewer of them
(e.g. avoids SERVFAIL when server adds extra records but omits RRSIGs)
Knot Resolver 1.99.1-alpha (2017-10-26)
=======================================
This is an experimental release meant for testing aggressive caching.
It contains some regressions and might (theoretically) be even vulnerable.
The current focus is to minimize queries into the root zone.
Improvements
------------
- negative answers from validated NSEC (NXDOMAIN, NODATA)
- verbose log is very chatty around cache operations (maybe too much)
Regressions
-----------
- dropped support for alternative cache backends
and for some specific cache operations
- caching doesn't yet work for various cases:
* negative answers without NSEC (i.e. with NSEC3 or insecure)
* +cd queries (needs other internal changes)
* positive wildcard answers
- spurious SERVFAIL on specific combinations of cached records, printing:
<= bad keys, broken trust chain
- make check
- a few Deckard tests are broken, probably due to some problems above
- also unknown ones?
Knot Resolver 1.4.0 (2017-09-22)
================================
Incompatible changes
--------------------
- lua: query flag-sets are no longer represented as plain integers.
kres.query.* no longer works, and kr_query_t lost trivial methods
'hasflag' and 'resolved'.
You can instead write code like qry.flags.NO_0X20 = true.
Bugfixes
--------
- fix exiting one of multiple forks (#150)
- cache: change the way of using LMDB transactions. That in particular
fixes some cases of using too much space with multiple kresd forks (#240).
Improvements
------------
- policy.suffix: update the aho-corasick code (#200)
- root hints are now loaded from a zonefile; exposed as hints.root_file().
You can override the path by defining ROOTHINTS during compilation.
- policy.FORWARD: work around resolvers adding unsigned NS records (#248)
- reduce unneeded records previously put into authority in wildcarded answers
Knot Resolver 1.3.3 (2017-08-09)
================================
Security
--------
- Fix a critical DNSSEC flaw. Signatures might be accepted as valid
even if the signed data was not in bailiwick of the DNSKEY used to
sign it, assuming the trust chain to that DNSKEY was valid.
Bugfixes
--------
- iterate: skip RRSIGs with bad label count instead of immediate SERVFAIL
- utils: fix possible incorrect seeding of the random generator
- modules/http: fix compatibility with the Prometheus text format
Improvements
------------
- policy: implement remaining special-use domain names from RFC6761 (#205),
and make these rules apply only if no other non-chain rule applies
Knot Resolver 1.3.2 (2017-07-28)
================================
Security
--------
- fix possible opportunities to use insecure data from cache as keys
for validation
Bugfixes
--------
- daemon: check existence of config file even if rundir isn't specified
- policy.FORWARD and STUB: use RTT tracking to choose servers (#125, #208)
- dns64: fix CNAME problems (#203) It still won't work with policy.STUB.
- hints: better interpretation of hosts-like files (#204)
also, error out if a bad entry is encountered in the file
- dnssec: handle unknown DNSKEY/DS algorithms (#210)
- predict: fix the module, broken since 1.2.0 (#154)
Improvements
------------
- embedded LMDB fallback: update 0.9.18 -> 0.9.21
Knot Resolver 1.3.1 (2017-06-23)
================================
Bugfixes
--------
- modules/http: fix finding the static files (bug from 1.3.0)
- policy.FORWARD: fix some cases of CNAMEs obstructing search for zone cuts
Knot Resolver 1.3.0 (2017-06-13)
================================
Security
--------
- Refactor handling of AD flag and security status of resource records.
In some cases it was possible for secure domains to get cached as
insecure, even for a TLD, leading to disabled validation.
It also fixes answering with non-authoritative data about nameservers.
Improvements
------------
- major feature: support for forwarding with validation (#112).
The old policy.FORWARD action now does that; the previous non-validating
mode is still available as policy.STUB except that also uses caching (#122).
- command line: specify ports via @ but still support # for compatibility
- policy: recognize 100.64.0.0/10 as local addresses
- layer/iterate: *do* retry repeatedly if REFUSED, as we can't yet easily
retry with other NSs while avoiding retrying with those who REFUSED
- modules: allow changing the directory where modules are found,
and do not search the default library path anymore.
Bugfixes
--------
- validate: fix insufficient caching for some cases (relatively rare)
- avoid putting "duplicate" record-sets into the answer (#198)
Knot Resolver 1.2.6 (2017-04-24)
================================
Security
--------
- dnssec: don't set AD flag for NODATA answers if wildcard non-existence
is not guaranteed due to opt-out in NSEC3
Improvements
------------
- layer/iterate: don't retry repeatedly if REFUSED
Bugfixes
--------
- lib/nsrep: revert some changes to NS reputation tracking that caused
severe problems to some users of 1.2.5 (#178 and #179)
- dnssec: fix verification of wildcarded non-singleton RRsets
- dnssec: allow wildcards located directly under the root
- layer/rrcache: avoid putting answer records into queries in some cases
Knot Resolver 1.2.5 (2017-04-05)
================================
Security
--------
- layer/validate: clear AD if closest encloser proof has opt-outed
NSEC3 (#169)
- layer/validate: check if NSEC3 records in wildcard expansion proof
has an opt-out
- dnssec/nsec: missed wildcard no-data answers validation has been
implemented
Improvements
------------
- modules/dnstap: a DNSTAP support module
(Contributed by Vicky Shrestha)
- modules/workarounds: a module adding workarounds for known
DNS protocol violators
- layer/iterate: fix logging of glue addresses
- kr_bitcmp: allow bits=0 and consequently 0.0.0.0/0 matches in view
and renumber modules.
- modules/padding: Improve default padding of responses
(Contributed by Daniel Kahn Gillmor)
- New kresc client utility (experimental; don't rely on the API yet)
Bugfixes
--------
- trust anchors: Improve trust anchors storage format (#167)
- trust anchors: support non-root TAs, one domain per file
- policy.DENY: set AA flag and clear AD flag
- lib/resolve: avoid unnecessary DS queries
- lib/nsrep: don't treat servers with NOIP4 + NOIP6 flags as timed out
- layer/iterate: During packet classification (answer vs. referral)
don't analyze AUTHORITY section in authoritative answer if ANSWER
section contains records that have been requested
Knot Resolver 1.2.4 (2017-03-09)
================================
Security
--------
- Knot Resolver 1.2.0 and higher could return AD flag for insecure
answer if the daemon received answer with invalid RRSIG several
times in a row.
Improvements
------------
- modules/policy: allow QTRACE policy to be chained with other
policies
- hints.add_hosts(path): a new property
- module: document the API and simplify the code
- policy.MIRROR: support IPv6 link-local addresses
- policy.FORWARD: support IPv6 link-local addresses
- add net.outgoing_{v4,v6} to allow specifying address to use for
connections
Bugfixes
--------
- layer/iterate: some improvements in cname chain unrolling
- layer/validate: fix duplicate records in AUTHORITY section in case
of WC expansion proof
- lua: do *not* truncate cache size to unsigned
- forwarding mode: correctly forward +cd flag
- fix a potential memory leak
- don't treat answers that contain DS non-existence proof as insecure
- don't store NSEC3 and their signatures in the cache
- layer/iterate: when processing delegations, check if qname is at or
below new authority
Knot Resolver 1.2.3 (2017-02-23)
================================
Bugfixes
--------
- Disable storing GLUE records into the cache even in the
(non-default) QUERY_PERMISSIVE mode
- iterate: skip answer RRs that don't match the query
- layer/iterate: some additional processing for referrals
- lib/resolve: zonecut fetching error was fixed
Knot Resolver 1.2.2 (2017-02-10)
================================
Bugfixes:
---------
- Fix -k argument processing to avoid out-of-bounds memory accesses
- lib/resolve: fix zonecut fetching for explicit DS queries
- hints: more NULL checks
- Fix TA bootstrapping for multiple TAs in the IANA XML file
Testing:
--------
- Update tests to run tests with and without QNAME minimization
Knot Resolver 1.2.1 (2017-02-01)
====================================
Security:
---------
- Under certain conditions, a cached negative answer from a CD query
would be reused to construct response for non-CD queries, resulting
in Insecure status instead of Bogus. Only 1.2.0 release was affected.
Documentation
-------------
- Update the typo in the documentation: The query trace policy is
named policy.QTRACE (and not policy.TRACE)
Bugfixes:
---------
- lua: make the map command check its arguments
Knot Resolver 1.2.0 (2017-01-24)
====================================
Security:
---------
- In a policy.FORWARD() mode, the AD flag was being always set by mistake.
It is now cleared, as the policy.FORWARD() doesn't do DNSSEC validation yet.
Improvements:
-------------
- The DNSSEC Validation has been refactored, fixing many resolving
failures.
- Add module `version` that checks for updates and CVEs periodically.
- Support RFC7830: EDNS(0) padding in responses over TLS.
- Support CD flag on incoming requests.
- hints module: previously /etc/hosts was loaded by default, but not anymore.
Users can now actually avoid loading any file.
- DNS over TLS now creates ephemeral certs.
- Configurable cache.{min,max}_ttl option, with max_ttl defaulting to 6 days.
- Option to reorder RRs in the response.
- New policy.QTRACE policy to print packet contents
Bugfixes:
---------
- Trust Anchor configuration is now more robust.
- Correctly answer NOTIMPL for meta-types and non-IN RR classes.
- Free TCP buffer on cancelled connection.
- Fix crash in hints module on empty hints file, and fix non-lowercase hints.
Miscellaneous:
--------------
- It now requires knot >= 2.3.1 to link successfully.
- The API+ABI for modules changed slightly.
- New LRU implementation.
Knot Resolver 1.1.1 (2016-08-24)
================================
......@@ -20,19 +1596,25 @@ Improvements:
- systemd: Read EnvironmentFile and user $KRESD_ARGS
- systemd: Update systemd units to be named after daemon
Knot Resolver 1.1.0 (2016-08-12)
================================
* RFC7873 DNS Cookies
* RFC7858 DNS over TLS
* HTTP/2 web interface, RESTful API
* Metrics exported in Prometheus
* DNS firewall module
* Explicit CNAME target fetching in strict mode
* Query minimisation improvements
* Improved integration with systemd
Improvements:
-------------
- RFC7873 DNS Cookies
- RFC7858 DNS over TLS
- HTTP/2 web interface, RESTful API
- Metrics exported in Prometheus
- DNS firewall module
- Explicit CNAME target fetching in strict mode
- Query minimisation improvements
- Improved integration with systemd
Knot Resolver 1.0.0 (2016-05-30)
================================
* First release
Initial release:
----------------
- The first initial release
README.md
View file @ 8c3183c5
# Knot DNS Resolver
# Knot Resolver
[![Build Status](https://img.shields.io/travis/CZ-NIC/knot-resolver/master.svg)](https://travis-ci.org/CZ-NIC/knot-resolver)
[![Coverage Status](https://img.shields.io/coveralls/CZ-NIC/knot-resolver.svg)](https://coveralls.io/r/CZ-NIC/knot-resolver)
[![Coverity](https://img.shields.io/coverity/scan/3912.svg)](https://scan.coverity.com/projects/3912)
[![Documentation Status](https://readthedocs.org/projects/knot-resolver/badge/?version=latest)](https://readthedocs.org/projects/knot-resolver/?badge=latest)
[![Build Status](https://gitlab.nic.cz/knot/knot-resolver/badges/nightly/pipeline.svg?x)](https://gitlab.nic.cz/knot/knot-resolver/commits/nightly)
[![Coverage Status](https://gitlab.nic.cz/knot/knot-resolver/badges/nightly/coverage.svg?x)](https://www.knot-resolver.cz/documentation/latest)
[![Packaging status](https://repology.org/badge/tiny-repos/knot-resolver.svg)](https://repology.org/project/knot-resolver/versions)
Knot Resolver is a full caching DNS resolver implementation. The core architecture is tiny and efficient, written in C and [LuaJIT][luajit], providing a foundation and a state-machine-like API for extension modules. There are three built-in modules - *iterator*, *validator* and *cache* - which provide the main functionality of the resolver. A few other modules are automatically loaded by default to extend the resolver's functionality.
The Knot DNS Resolver is a caching full resolver implementation written in C and [LuaJIT][luajit], both a resolver library and a daemon. The core architecture is tiny and efficient, and provides a foundation and
a state-machine like API for extensions. There are three of those built-in - *iterator*, *cache*, *validator*, and most of the [rich features](https://knot-resolver.readthedocs.io/en/latest/modules.html) are written in LuaJIT, Go and C. Batteries are included, but optional.
Since Knot Resolver version 6, it also includes a so-called [manager][manager]. It is a new component written in [Python][python] that hides the complexity of older versions and makes it more user friendly. For example, new features include declarative configuration in YAML format and HTTP API for dynamic changes in the resolver and more.
The LuaJIT modules, support for DNS privacy and DNSSEC, and persistent cache with low memory footprint make it a great personal DNS resolver or a research tool to tap into DNS data. TL;DR it's the [OpenResty][openresty] of DNS.
Knot Resolver uses a [different scaling strategy][scaling] than the rest of the DNS resolvers - no threading, shared-nothing architecture (except MVCC cache which can be shared), which allows you to pin workers to available CPU cores and grow by self-replication. You can start and stop additional workers based on the contention without downtime, which is automated by the [manager][manager] by default.
Several cache backends (LMDB, Redis and Memcached), strong filtering rules, and auto-configuration with etcd make it a great large-scale resolver solution.
The LuaJIT modules, support for DNS privacy and DNSSEC, and persistent cache with low memory footprint make it a great personal DNS resolver or a research tool to tap into DNS data. Strong filtering rules, and auto-configuration with etcd make it a great large-scale resolver solution. It also has strong support for DNS over TCP, in particular TCP Fast-Open, query pipelining and deduplication, and response reordering.
The server adopts a [different scaling strategy][scaling] than the rest of the DNS recursors - no threading, shared-nothing architecture (except MVCC cache that may be shared) that allows you to pin instances on available CPU cores and grow by self-replication. You can start and stop additional nodes depending on the contention without downtime.
For more on using the resolver, see the [User Documentation][doc]. See the [Developer Documentation][doc-dev] for detailed architecture and development.
It also has strong support for DNS over TCP, notably TCP Fast-Open, query pipelining and deduplication, and response reordering.
## Packages
### Packages
The latest stable packages for various distributions are available in our
[upstream repository](https://pkg.labs.nic.cz/doc/?project=knot-resolver).
Follow the installation instructions to add this repository to your system.
Knot Resolver is packaged for Debian, Fedora, Ubuntu and [openSUSE](https://build.opensuse.org/package/show/server:dns/knot-resolver).
See [project page](https://www.knot-resolver.cz/pages/try.html) for more information.
Knot Resolver is also available from the following distributions' repositories:
### Building from sources
* [Fedora and Fedora EPEL](https://src.fedoraproject.org/rpms/knot-resolver)
* [Debian stable](https://packages.debian.org/stable/knot-resolver),
[Debian testing](https://packages.debian.org/testing/knot-resolver),
[Debian unstable](https://packages.debian.org/sid/knot-resolver)
* [Ubuntu](https://packages.ubuntu.com/jammy/knot-resolver)
* [Arch Linux](https://archlinux.org/packages/extra/x86_64/knot-resolver/)
* [Alpine Linux](https://pkgs.alpinelinux.org/packages?name=knot-resolver)
The Knot DNS Resolver [depends][depends] on the 2.1 version of the Knot DNS library, [LuaJIT][luajit] and [libuv][libuv].
See the [Building project][depends] documentation page for more information.
### Packaging
### Docker image
The project uses [`apkg`](https://gitlab.nic.cz/packaging/apkg) for packaging.
See [`distro/README.md`](distro/README.md) for packaging specific instructions.
This is simple and doesn't require any dependencies or system modifications, just run:
## Building from sources
Knot Resolver mainly depends on [KnotDNS][knot-dns] libraries, [LuaJIT][luajit], [libuv][libuv] and [Python][python].
See the [Building project][build] documentation page for more information.
## Running
By default, Knot Resolver comes with [systemd][systemd] integration and you just need to start its service. It requires no configuration changes to run a server on localhost.
```
$ docker run -it cznic/knot-resolver
# systemctl start knot-resolver
```
See the build page [hub.docker.com/r/cznic/knot-resolver](https://hub.docker.com/r/cznic/knot-resolver/) for more information and options.
See the documentation at [knot-resolver.cz/documentation/latest][doc] for more information.
### Running
## Running the Docker image
The project builds a resolver library in the `lib` directory, and a daemon in the `daemon` directory. It requires no configuration or parameters to run a server on localhost.
Running the Docker image is simple and doesn't require any dependencies or system modifications, just run:
```
$ kresd
$ docker run -Pit cznic/knot-resolver
```
See the documentation at [knot-resolver.readthedocs.io][doc] for more options.
The images are meant as an easy way to try the resolver, and they're not designed for production use.
[depends]: https://knot-resolver.readthedocs.io/en/latest/build.html
[doc]: https://knot-resolver.readthedocs.io/en/latest/index.html
[scaling]: https://knot-resolver.readthedocs.io/en/latest/daemon.html#scaling-out
[deckard]: https://gitlab.labs.nic.cz/knot/deckard
[luajit]: http://luajit.org/
[libuv]: https://github.com/libuv/libuv
[openresty]: https://openresty.org/
## Contacting us
### Contacting us
- [GitLab issues](https://gitlab.nic.cz/knot/knot-resolver/issues) (you may authenticate via GitHub)
- [mailing list](https://lists.nic.cz/postorius/lists/knot-resolver-announce.lists.nic.cz/)
- [![Join the chat at https://gitter.im/CZ-NIC/knot-resolver](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/CZ-NIC/knot-resolver?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
[![Join the chat at https://gitter.im/CZ-NIC/knot-resolver](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/CZ-NIC/knot-resolver?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
[build]: https://www.knot-resolver.cz/documentation/latest/dev/build.html
[doc]: https://www.knot-resolver.cz/documentation/latest/
[doc-dev]: https://www.knot-resolver.cz/documentation/latest/dev
[knot-dns]: https://www.knot-dns.cz/
[luajit]: https://luajit.org/
[libuv]: http://libuv.org
[python]: https://www.python.org/
[systemd]: https://systemd.io/
[scaling]: https://www.knot-resolver.cz/documentation/latest/config-multiple-workers.html
[manager]: https://www.knot-resolver.cz/documentation/latest/dev/architecture.html
bench/bench.mk deleted 100644 → 0
View file @ 642eb531
bench_BIN := \
bench_lru
# Dependencies
bench_DEPEND := $(libkres)
bench_LIBS := $(libkres_TARGET) $(libkres_LIBS)
# Platform-specific library injection
ifeq ($(PLATFORM),Darwin)
preload_syms := DYLD_FORCE_FLAT_NAMESPACE=1 DYLD_LIBRARY_PATH="$(DYLD_LIBRARY_PATH):$(abspath lib)"
else
preload_syms := LD_LIBRARY_PATH="$(LD_LIBRARY_PATH):$(abspath lib)"
endif
# Make bench binaries
define make_bench
$(1)_CFLAGS := -fPIE
$(1)_SOURCES := bench/$(1).c
$(1)_LIBS := $(bench_LIBS)
$(1)_DEPEND := $(bench_DEPEND)
$(call make_bin,$(1),bench)
endef
$(foreach bench,$(bench_BIN),$(eval $(call make_bench,$(bench))))
# Targets
.PHONY: bench bench-clean
bench-clean: $(foreach bench,$(bench_BIN),$(bench)-clean)
bench: $(foreach bench,$(bench_BIN),bench/$(bench))
@echo "Test LRU with increasing overfill, misses should increase ~ linearly" >&2
@./bench/bench_lru 23 bench/bench_lru_set1.tsv - 65536 # fill ~ 1
@./bench/bench_lru 23 bench/bench_lru_set1.tsv - 32768 # fill ~ 2
@./bench/bench_lru 23 bench/bench_lru_set1.tsv - 16384 # fill ~ 4
@./bench/bench_lru 23 bench/bench_lru_set1.tsv - 8192 # fill ~ 8
@./bench/bench_lru 23 bench/bench_lru_set1.tsv - 4096 # fill ~ 16
bench/bench_lru.c
View file @ 8c3183c5
/* Copyright (C) 2015 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
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/>.
/* Copyright (C) CZ.NIC, z.s.p.o. <knot-resolver@labs.nic.cz>
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include <math.h>
......@@ -23,19 +11,23 @@
#include "contrib/ucw/lib.h"
#include "daemon/engine.h"
#include "lib/nsrep.h"
#include "lib/selection.h"
typedef kr_nsrep_lru_t lru_bench_t;
typedef lru_t(unsigned) lru_bench_t;
#define p_out(...) do { \
printf(__VA_ARGS__); \
fflush(stdout); \
} while (0)
#define p_err(...) fprintf(stderr, __VA_ARGS__)
(void)fflush(stdout); \
} while (0)
#define p_err(...) ((void)fprintf(stderr, __VA_ARGS__))
#ifndef LRU_RTT_SIZE
#define LRU_RTT_SIZE 65536 /**< NS RTT cache size */
#endif
static int die(const char *cause)
{
fprintf(stderr, "%s: %s\n", cause, strerror(errno));
(void)fprintf(stderr, "%s: %s\n", cause, strerror(errno));
exit(1);
}
......@@ -151,7 +143,7 @@ static struct key * read_lines(const char *fname, size_t *count, char **pfree)
return result;
}
// compatibility layer for the oler lru_* names; it's more compler with lru_create
// compatibility layer for the older lru_* names
#ifndef lru_create
#define lru_get_new lru_set
#define lru_get_try lru_get
......@@ -179,7 +171,7 @@ int main(int argc, char ** argv)
struct key *keys = read_lines(argv[2], &key_count, &data_to_free);
size_t run_count;
{
size_t run_log = atoi(argv[1]);
size_t run_log = atoi(argv[1]); // NOLINT: atoi is fine for this tool...
assert(run_log < 64);
run_count = 1ULL << run_log;
p_err("\ntest run length:\t2^");
......@@ -187,7 +179,7 @@ int main(int argc, char ** argv)
}
struct timeval time;
const int lru_size = argc > 4 ? atoi(argv[4]) : LRU_RTT_SIZE;
const int lru_size = argc > 4 ? atoi(argv[4]) : LRU_RTT_SIZE; // NOLINT: ditto atoi
lru_bench_t *lru;
#ifdef lru_create
......@@ -212,7 +204,7 @@ int main(int argc, char ** argv)
p_err("\nload everything:\t");
time_get(&time);
for (size_t i = 0, ki = key_count - 1; i < run_count; ++i, --ki) {
unsigned *r = lru_get_new(lru, keys[ki].chars, keys[ki].len);
unsigned *r = lru_get_new(lru, keys[ki].chars, keys[ki].len, NULL);
if (!r || *r == 0)
++miss;
if (r)
......
bench/meson.build 0 → 100644
View file @ 8c3183c5
# bench
# SPDX-License-Identifier: GPL-3.0-or-later
bench_lru_src = files([
'bench_lru.c',
])
cc = meson.get_compiler('c')
m_dep = cc.find_library('m', required : false)
bench_lru = executable(
'bench_lru',
bench_lru_src,
dependencies: [
contrib_dep,
libkres_dep,
m_dep,
],
)
run_target(
'bench',
command: '../scripts/meson/bench.sh',
)
build_c_extensions.py 0 → 100644
View file @ 8c3183c5
from typing import Any, Dict
from setuptools import Extension
def build(setup_kwargs: Dict[Any, Any]) -> None:
setup_kwargs.update(
{
"ext_modules": [
Extension(
name="knot_resolver.controller.supervisord.plugin.notify",
sources=["python/knot_resolver/controller/supervisord/plugin/notifymodule.c"],
),
]
}
)
ci/deckard_commit_check.sh 0 → 100755
View file @ 8c3183c5
DECKARD_COMMIT=$(git ls-tree HEAD:tests/integration/ | grep commit | grep deckard | cut -f1 | cut -f3 '-d ')
DECKARD_PATH="tests/integration/deckard"
pushd $DECKARD_PATH > /dev/null
if git merge-base --is-ancestor $DECKARD_COMMIT origin/master; then
echo "Deckard submodule commit is on in its master branch. All good in the hood."
exit 0
else
echo "Deckard submodule commit $DECKARD_COMMIT is not in Deckard's master branch."
echo "This WILL cause CI breakages so make sure your changes in Deckard are merged"
echo "or point the submodule to another commit."
exit 1
fi
ci/fix-meson-junit.sh 0 → 100755
View file @ 8c3183c5
#!/bin/sh
sed 's|</testcase>|</testcase>\n|g' -i "$@"
sed -e '/<failure \/>/,/<\/testcase>/s/<\(\/\?\)system-\(out\|err\)>/<\1failure>/g' \
-e 's/<failure \/>//g' \
-i "$@"
ci/gh_actions.py 0 → 100755
View file @ 8c3183c5
#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-3.0-or-later
import json
import time
import sys
import requests
BRANCH_API_ENDPOINT = "https://api.github.com/repos/CZ-NIC/knot-resolver/actions/runs?branch={branch}" # noqa
TIMEOUT = 20*60 # 20 mins max
POLL_DELAY = 60
SYNC_TIMEOUT = 10*60
def exit(msg='', html_url='', code=1):
print(msg, file=sys.stderr)
print(html_url)
sys.exit(code)
end_time = time.time() + TIMEOUT
sync_timeout = time.time() + SYNC_TIMEOUT
while time.time() < end_time:
response = requests.get(
BRANCH_API_ENDPOINT.format(branch=sys.argv[1]),
headers={"Accept": "application/vnd.github.v3+json"})
if response.status_code == 404:
pass # not created yet?
elif response.status_code == 200:
data = json.loads(response.content.decode('utf-8'))
try:
for i in range(0, 1): # two runs ATM
run = data['workflow_runs'][i]
conclusion = run['conclusion']
html_url = run['html_url']
commit_sha = run['head_sha']
except (KeyError, IndexError):
time.sleep(POLL_DELAY)
continue
if commit_sha != sys.argv[2]:
if time.time() < sync_timeout:
time.sleep(POLL_DELAY)
continue
exit("Fetched invalid GH Action: commit mismatch. Re-run or push again?")
if conclusion is None:
pass
if conclusion == "success":
exit("SUCCESS!", html_url, code=0)
elif isinstance(conclusion, str):
# failure, neutral, cancelled, skipped, timed_out, or action_required
exit("GitHub Actions Conclusion: {}!".format(conclusion.upper()), html_url)
else:
exit("API Response Code: {}".format(response.status_code), code=2)
time.sleep(POLL_DELAY)
exit("Timed out!")
ci/no_assert_check.sh 0 → 100755
View file @ 8c3183c5
#!/bin/sh
grep '\<assert\>' -- $(git ls-files | grep '\.[hc]$' | grep -vE '^(contrib|bench|tests|daemon/ratelimiting.test)/|^lib/kru')
test $? -eq 1
ci/pkgtest.yaml 0 → 100644
View file @ 8c3183c5
default:
interruptible: true
stages:
- pkgbuild
- pkgtest
# pkgbuild {{{
.pkgbuild: &pkgbuild
stage: pkgbuild
tags:
- lxc
- amd64
before_script:
- git config --global user.name CI
- git config --global user.email ci@nic
needs: # https://gitlab.nic.cz/help/ci/yaml/README.md#artifact-downloads-to-child-pipelines
- pipeline: $PARENT_PIPELINE_ID
job: archive
artifacts:
when: always
expire_in: '1 day'
paths:
- pkg/
.apkgbuild: &apkgbuild # new jinja2 breaks docs (sphinx/breathe)
- pip3 install -U apkg 'jinja2<3.1'
- apkg build-dep -y
- apkg build
.pkgdebrepo: &pkgdebrepo
- apt-get update
- apt-get install -y curl gnupg2
- echo "deb http://download.opensuse.org/repositories/home:/CZ-NIC:/$OBS_REPO/$DISTROTEST_REPO/ /" > /etc/apt/sources.list.d/obs.list
- curl -fsSL "https://download.opensuse.org/repositories/home:CZ-NIC:$OBS_REPO/$DISTROTEST_REPO/Release.key" | gpg --dearmor > /etc/apt/trusted.gpg.d/obs.gpg
- apt-get update
.debpkgbuild: &debpkgbuild
- *pkgdebrepo
- apt-get install -y python3-pip devscripts
- *apkgbuild
centos-7:pkgbuild:
<<: *pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/centos-7
before_script:
- export LC_ALL=en_US.UTF-8
- git config --global user.name CI
- git config --global user.email ci@nic
script:
- yum install -y rpm-build python3-pip epel-release
- *apkgbuild
debian-10:pkgbuild:
<<: *pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/debian-10
variables:
OBS_REPO: knot-resolver-build
DISTROTEST_REPO: Debian_10
script:
- *debpkgbuild
debian-11:pkgbuild:
<<: *pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/debian-11
variables:
OBS_REPO: knot-resolver-build
DISTROTEST_REPO: Debian_11
script:
- *debpkgbuild
fedora-34:pkgbuild:
<<: *pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/fedora-34
script:
- dnf install -y rpm-build python3-pip
- *apkgbuild
fedora-35:pkgbuild:
<<: *pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/fedora-35
script:
- dnf install -y rpm-build python3-pip
- *apkgbuild
rocky-8:pkgbuild:
<<: *pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/rocky-8
script:
- dnf install -y rpm-build python3-pip epel-release dnf-plugins-core
- dnf config-manager --set-enabled powertools
- *apkgbuild
ubuntu-18.04:pkgbuild:
<<: *pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/ubuntu-18.04
variables:
OBS_REPO: knot-resolver-build
DISTROTEST_REPO: xUbuntu_18.04
script:
- *debpkgbuild
ubuntu-20.04:pkgbuild:
<<: *pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/ubuntu-20.04
variables:
OBS_REPO: knot-resolver-build
DISTROTEST_REPO: xUbuntu_20.04
script:
- *debpkgbuild
nixos-unstable:pkgbuild:
<<: *pkgbuild
# We do NOT use LXC, for now at least.
parallel:
matrix:
- PLATFORM: [ amd64, arm64 ]
tags:
- docker
- linux
- ${PLATFORM}
# https://github.com/NixOS/nix/issues/10648#issuecomment-2101993746
image: docker.io/nixos/nix:latest-${PLATFORM}
variables:
NIX_PATH: nixpkgs=https://github.com/nixos/nixpkgs/archive/nixos-unstable.tar.gz
before_script:
script:
- nix-build '<nixpkgs>' -QA apkg
# the image auto-detects as alpine distro
# If apkg version differs (too much), it will fail to reuse archive and fail.
- ./result/bin/apkg install -d nix
- kresd --version
# }}}
# pkgtest {{{
.pkgtest: &pkgtest
stage: pkgtest
tags:
- lxc
- amd64
.debpkgtest: &debpkgtest
- *pkgdebrepo
- apt-get install -y knot-dnsutils
- apt-get install -y $(find ./pkg/pkgs -name '*.deb' | grep -v module | grep -v debug | grep -v devel)
- systemctl start kresd@1
- kdig @127.0.0.1 nic.cz | grep -qi NOERROR
centos-7:pkgtest:
<<: *pkgtest
needs:
- centos-7:pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/centos-7
before_script:
- export LC_ALL=en_US.UTF-8
script:
- yum install -y epel-release
- yum install -y knot-utils findutils
- yum install -y $(find ./pkg/pkgs -name '*.rpm' | grep -v module | grep -v debug | grep -v devel)
- systemctl start kresd@1
- kdig @127.0.0.1 nic.cz | grep -qi NOERROR
debian-10:pkgtest:
<<: *pkgtest
needs:
- debian-10:pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/debian-10
variables:
OBS_REPO: knot-resolver-build
DISTROTEST_REPO: Debian_10
script:
- *debpkgtest
debian-11:pkgtest:
<<: *pkgtest
needs:
- debian-11:pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/debian-11
variables:
OBS_REPO: knot-resolver-build
DISTROTEST_REPO: Debian_11
script:
- *debpkgtest
fedora-34:pkgtest:
<<: *pkgtest
needs:
- fedora-34:pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/fedora-34
script:
- dnf install -y knot-utils findutils
- dnf install -y $(find ./pkg/pkgs -name '*.rpm' | grep -v module | grep -v debug | grep -v devel)
- systemctl start kresd@1
- kdig @127.0.0.1 nic.cz | grep -qi NOERROR
fedora-35:pkgtest:
<<: *pkgtest
needs:
- fedora-35:pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/fedora-35
script:
- dnf install -y knot-utils findutils
- dnf install -y $(find ./pkg/pkgs -name '*.rpm' | grep -v module | grep -v debug | grep -v devel)
- systemctl start kresd@1
- kdig @127.0.0.1 nic.cz | grep -qi NOERROR
rocky-8:pkgtest:
<<: *pkgtest
needs:
- rocky-8:pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/rocky-8
script:
- dnf install -y epel-release
- dnf install -y knot-utils findutils
- dnf install -y $(find ./pkg/pkgs -name '*.rpm' | grep -v module | grep -v debug | grep -v devel)
- systemctl start kresd@1
- kdig @127.0.0.1 nic.cz | grep -qi NOERROR
ubuntu-18.04:pkgtest:
<<: *pkgtest
needs:
- ubuntu-18.04:pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/ubuntu-18.04
variables:
OBS_REPO: knot-resolver-build
DISTROTEST_REPO: xUbuntu_18.04
script:
- *debpkgtest
ubuntu-20.04:pkgtest:
<<: *pkgtest
needs:
- ubuntu-20.04:pkgbuild
image: $CI_REGISTRY/labs/lxc-gitlab-runner/ubuntu-20.04
variables:
OBS_REPO: knot-resolver-build
DISTROTEST_REPO: xUbuntu_20.04
script:
- *debpkgtest
# }}}
ci/respdiff/kresd.config 0 → 100644
View file @ 8c3183c5
-- SPDX-License-Identifier: GPL-3.0-or-later
-- Refer to manual: https://www.knot-resolver.cz/documentation/latest/
-- Listen on localhost and external interface
net.listen('127.0.0.1', 5353)
net.listen('127.0.0.1', 8853, { tls = true })
net.ipv6=false
-- Auto-maintain root TA
trust_anchors.add_file('.local/etc/knot-resolver/root.keys')
cache.size = 1024 * MB
-- Load Useful modules
modules = {
'workarounds < iterate',
'policy', -- Block queries to local zones/bad sites
'view', -- Views for certain clients
'hints > iterate', -- Allow loading /etc/hosts or custom root hints
'stats', -- Track internal statistics
}
-- avoid TC flags returned to respdiff
local _, up_bs = net.bufsize()
net.bufsize(4096, up_bs)
log_level('debug')
ci/respdiff/respdiff-tcp.conf 0 → 100644
View file @ 8c3183c5
# SPDX-License-Identifier: GPL-3.0-or-later
[sendrecv]
# in seconds
timeout = 11
# number of queries to run simultaneously
jobs = 64
# in seconds (float); delay each query by a random time (uniformly distributed) between min and max; set max to 0 to disable
time_delay_min = 0
time_delay_max = 0
[servers]
names = kresd, bind, unbound
# symbolic names of DNS servers under test
# separate multiple values by ,
# each symbolic name in [servers] section refers to config section
# containing IP address and port of particular server
[kresd]
ip = 127.0.0.1
port = 5353
transport = tcp
graph_color = #00a2e2
restart_script = ./ci/respdiff/restart-kresd.sh
[bind]
ip = 127.0.0.1
port = 53533
transport = udp
graph_color = #e2a000
restart_script = ./ci/respdiff/restart-bind.sh
[unbound]
ip = 127.0.0.1
port = 53535
transport = udp
graph_color = #218669
restart_script = ./ci/respdiff/restart-unbound.sh
[diff]
# symbolic name of server under test
# other servers are used as reference when comparing answers from the target
target = kresd
# fields and comparison methods used when comparing two DNS messages
criteria = opcode, rcode, flags, question, answertypes, answerrrsigs
# other supported criteria values: authority, additional, edns, nsid
[report]
# diffsum reports mismatches in field values in this order
# if particular message has multiple mismatches, it is counted only once into category with highest weight
field_weights = timeout, malformed, opcode, question, rcode, flags, answertypes, answerrrsigs, answer, authority, additional, edns, nsid
ci/respdiff/respdiff-tls.conf 0 → 100644
View file @ 8c3183c5
# SPDX-License-Identifier: GPL-3.0-or-later
[sendrecv]
# in seconds
timeout = 11
# number of queries to run simultaneously
jobs = 64
# in seconds (float); delay each query by a random time (uniformly distributed) between min and max; set max to 0 to disable
time_delay_min = 0
time_delay_max = 0
[servers]
names = kresd, bind, unbound
# symbolic names of DNS servers under test
# separate multiple values by ,
# each symbolic name in [servers] section refers to config section
# containing IP address and port of particular server
[kresd]
ip = 127.0.0.1
port = 8853
transport = tls
graph_color = #00a2e2
restart_script = ./ci/respdiff/restart-kresd.sh
[bind]
ip = 127.0.0.1
port = 53533
transport = udp
graph_color = #e2a000
restart_script = ./ci/respdiff/restart-bind.sh
[unbound]
ip = 127.0.0.1
port = 53535
transport = udp
graph_color = #218669
restart_script = ./ci/respdiff/restart-unbound.sh
[diff]
# symbolic name of server under test
# other servers are used as reference when comparing answers from the target
target = kresd
# fields and comparison methods used when comparing two DNS messages
criteria = opcode, rcode, flags, question, answertypes, answerrrsigs
# other supported criteria values: authority, additional, edns, nsid
[report]
# diffsum reports mismatches in field values in this order
# if particular message has multiple mismatches, it is counted only once into category with highest weight
field_weights = timeout, malformed, opcode, question, rcode, flags, answertypes, answerrrsigs, answer, authority, additional, edns, nsid
ci/respdiff/respdiff-udp.conf 0 → 100644
View file @ 8c3183c5
# SPDX-License-Identifier: GPL-3.0-or-later
[sendrecv]
# in seconds
timeout = 11
# number of queries to run simultaneously
jobs = 64
# in seconds (float); delay each query by a random time (uniformly distributed) between min and max; set max to 0 to disable
time_delay_min = 0
time_delay_max = 0
[servers]
names = kresd, bind, unbound
# symbolic names of DNS servers under test
# separate multiple values by ,
# each symbolic name in [servers] section refers to config section
# containing IP address and port of particular server
[kresd]
ip = 127.0.0.1
port = 5353
transport = udp
graph_color = #00a2e2
restart_script = ./ci/respdiff/restart-kresd.sh
[bind]
ip = 127.0.0.1
port = 53533
transport = udp
graph_color = #e2a000
restart_script = ./ci/respdiff/restart-bind.sh
[unbound]
ip = 127.0.0.1
port = 53535
transport = udp
graph_color = #218669
restart_script = ./ci/respdiff/restart-unbound.sh
[diff]
# symbolic name of server under test
# other servers are used as reference when comparing answers from the target
target = kresd
# fields and comparison methods used when comparing two DNS messages
criteria = opcode, rcode, flags, question, answertypes, answerrrsigs
# other supported criteria values: authority, additional, edns, nsid
[report]
# diffsum reports mismatches in field values in this order
# if particular message has multiple mismatches, it is counted only once into category with highest weight
field_weights = timeout, malformed, opcode, question, rcode, flags, answertypes, answerrrsigs, answer, authority, additional, edns, nsid
ci/respdiff/restart-bind.sh 0 → 100755
View file @ 8c3183c5
#!/bin/sh
# SPDX-License-Identifier: GPL-3.0-or-later
service named restart
ci/respdiff/restart-kresd.sh 0 → 100755
View file @ 8c3183c5
#!/bin/sh
# SPDX-License-Identifier: GPL-3.0-or-later
exec > /dev/null
exec 2>&1
killall -w kresd
rm -f '*.mdb'
$PREFIX/sbin/kresd -n -q -c $(pwd)/ci/respdiff/kresd.config &>>kresd.log &
# wait until socket is receiving connections
sleep 1
ci/respdiff/restart-unbound.sh 0 → 100755
View file @ 8c3183c5
#!/bin/sh
# SPDX-License-Identifier: GPL-3.0-or-later
service unbound restart
ci/respdiff/run-respdiff-tests.sh 0 → 100755
View file @ 8c3183c5
#!/usr/bin/env bash
# SPDX-License-Identifier: GPL-3.0-or-later
# $1 == udp/tcp/tls, it selects configuration file to use
# respdiff scripts must be present in /var/opt/respdiff
set -o errexit -o nounset -o xtrace
NDIFFREPRO=3
wget -qO- https://gitlab.nic.cz/knot/respdiff/snippets/238/raw?inline=false | head -n 5000 > /tmp/queries.txt
mkdir results
rm -rf respdiff.db
CONFIG="$(pwd)/ci/respdiff/respdiff-${1}.conf"
/var/opt/respdiff/qprep.py respdiff.db < /tmp/queries.txt
time /var/opt/respdiff/orchestrator.py respdiff.db -c "${CONFIG}"
time /var/opt/respdiff/msgdiff.py respdiff.db -c "${CONFIG}"
for i in $(seq $NDIFFREPRO); do
time /var/opt/respdiff/diffrepro.py -c "${CONFIG}" respdiff.db
done
/var/opt/respdiff/diffsum.py respdiff.db -c "${CONFIG}" > results/respdiff.txt
/var/opt/respdiff/histogram.py respdiff.db -c "${CONFIG}" -o results/histogram.svg
: minimize LMDB and log size so they can be effectively archived
mkdir results/respdiff.db
mdb_copy -c respdiff.db results/respdiff.db
xz -9 results/respdiff.db/data.mdb
xz kresd.log