9 files changed, 241 insertions, 0 deletions
diff --git a/ci/respdiff/kresd.config b/ci/respdiff/kresd.config
new file mode 100644
index 0000000..2b7b218
--- /dev/null
+++ b/ci/respdiff/kresd.config
@@ -0,0 +1,26 @@
+-- SPDX-License-Identifier: GPL-3.0-or-later
+-- Refer to manual: https://knot-resolver.readthedocs.io/en/stable/
+-- 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')
diff --git a/ci/respdiff/respdiff-tcp.conf b/ci/respdiff/respdiff-tcp.conf
new file mode 100644
index 0000000..b2d40ff
--- /dev/null
+++ b/ci/respdiff/respdiff-tcp.conf
@@ -0,0 +1,52 @@
+# 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
diff --git a/ci/respdiff/respdiff-tls.conf b/ci/respdiff/respdiff-tls.conf
new file mode 100644
index 0000000..1a50eab
--- /dev/null
+++ b/ci/respdiff/respdiff-tls.conf
@@ -0,0 +1,52 @@
+# 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
diff --git a/ci/respdiff/respdiff-udp.conf b/ci/respdiff/respdiff-udp.conf
new file mode 100644
index 0000000..35a69a9
--- /dev/null
+++ b/ci/respdiff/respdiff-udp.conf
@@ -0,0 +1,52 @@
+# 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
diff --git a/ci/respdiff/restart-bind.sh b/ci/respdiff/restart-bind.sh
new file mode 100755
index 0000000..35838c7
--- /dev/null
+++ b/ci/respdiff/restart-bind.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-or-later
+service named restart
diff --git a/ci/respdiff/restart-kresd.sh b/ci/respdiff/restart-kresd.sh
new file mode 100755
index 0000000..4e9387c
--- /dev/null
+++ b/ci/respdiff/restart-kresd.sh
@@ -0,0 +1,12 @@
+#!/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
diff --git a/ci/respdiff/restart-unbound.sh b/ci/respdiff/restart-unbound.sh
new file mode 100755
index 0000000..add24c9
--- /dev/null
+++ b/ci/respdiff/restart-unbound.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+service unbound restart
diff --git a/ci/respdiff/run-respdiff-tests.sh b/ci/respdiff/run-respdiff-tests.sh
new file mode 100755
index 0000000..2bfc44d
--- /dev/null
+++ b/ci/respdiff/run-respdiff-tests.sh
@@ -0,0 +1,27 @@
+#!/bin/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
diff --git a/ci/respdiff/start-resolvers.sh b/ci/respdiff/start-resolvers.sh
new file mode 100755
index 0000000..87e98f3
--- /dev/null
+++ b/ci/respdiff/start-resolvers.sh
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+#run unbound
+service unbound start && service unbound status;
+# dig @localhost -p 53535
+
+#run bind
+service named start && service named status;
+# dig @localhost -p 53533
+
+#run kresd
+$PREFIX/sbin/kresd -n -q -c $(pwd)/ci/respdiff/kresd.config &>kresd.log &
+# dig @localhost -p 5353