stub-zone:
name: "example.com."
stub-addr: "127.0.0.1@@TOPORT@"
-
+ stub-no-cache: yes
import unbound
qname = "www.example.com"
+qname2 = "www2.example.com"
qtype = unbound.RR_TYPE_A
qclass = unbound.RR_CLASS_IN
+
def create_context(config_file="ub.lookup.conf", asyncflag=False):
"""
Create an unbound context to use for testing.
print("Failed async resolve with: {}".format(retval))
-def test_ratelimit_fg_on(ctx):
- """
- Test resolving a ratelimited domain with a foreground worker.
-
- """
- ctx.set_option("ratelimit:", "1")
- ctx.set_option("ratelimit-factor:", "0")
- status, result = ctx.resolve(qname, qtype, qclass)
- if status == 0 and result.was_ratelimited:
- print("Ratelimit-fg-on: pass")
- else:
- print("Failed ratelimit-fg-on with: {}".format(status))
-
-
-def test_ratelimit_fg_off(ctx):
- """
- Test resolving a non-ratelimited domain with a foreground worker.
-
- """
- status, result = ctx.resolve(qname, qtype, qclass)
- if status == 0 and result.havedata:
- print("Ratelimit-fg-off: {}".format(result.data.address_list))
- else:
- print("Failed ratelimit-fg-off with: {}".format(status))
-
-
def test_ratelimit_bg_on(ctx):
"""
Test resolving a ratelimited domain with a background worker.
"""
ctx.set_option("ratelimit:", "1")
ctx.set_option("ratelimit-factor:", "0")
- cb_data = dict(done=False)
- retval, async_id = ctx.resolve_async(qname, cb_data, callback, qtype, qclass)
- while retval == 0 and not cb_data['done']:
- time.sleep(0.1)
- retval = ctx.process()
-
- if cb_data.get('was_ratelimited'):
+ total_runs = 6
+ success_threshold = 4 # 2/3*total_runs
+ successes = 0
+ for i in range(total_runs):
+ cb_data = dict(done=False)
+ cb_data2 = dict(done=False)
+ retval, async_id = ctx.resolve_async(qname, cb_data, callback, qtype, qclass)
+ retval, async_id = ctx.resolve_async(qname2, cb_data2, callback, qtype, qclass)
+
+ while retval == 0 and not (cb_data['done'] and cb_data['done']):
+ time.sleep(0.1)
+ retval = ctx.process()
+
+ if bool(cb_data.get('was_ratelimited')) ^ bool(cb_data2.get('was_ratelimited')):
+ successes += 1
+ if successes >= success_threshold:
+ break
+ time.sleep(1)
+ if successes >= success_threshold:
print("Ratelimit-bg-on: pass")
else:
- print("Failed ratelimit-bg-on with: {}".format(status))
-
-
-def test_ratelimit_bg_off(ctx):
- """
- Test resolving a non-ratelimited domain with a background worker.
-
- """
- cb_data = dict(done=False)
- retval, async_id = ctx.resolve_async(qname, cb_data, callback, qtype, qclass)
- while retval == 0 and not cb_data['done']:
- time.sleep(0.1)
- retval = ctx.process()
-
- if cb_data.get('data'):
- print("Ratelimit-bg-off: {}".format(cb_data['data'].address_list))
- else:
- print("Failed ratelimit-bg-off with: {}".format(status))
+ print("Failed ratelimit-bg-on")
test_resolve(create_context())
test_async_resolve(create_context(asyncflag=True))
-test_ratelimit_fg_on(create_context())
-test_ratelimit_fg_off(create_context())
test_ratelimit_bg_on(create_context(asyncflag=True))
-test_ratelimit_bg_off(create_context(asyncflag=True))
sys.exit(0)
echo "Not OK (async resolve)"
exit 1
fi
-if grep "Ratelimit-fg-on: pass" outfile; then
- :
-else
- echo "Not OK (ratelimit-fg-on)"
- exit 1
-fi
-if grep "Ratelimit-fg-off: \[.\?10.20.30.40.\?\]" outfile; then
- :
-else
- echo "Not OK (ratelimit-fg-off)"
- exit 1
-fi
if grep "Ratelimit-bg-on: pass" outfile; then
:
else
echo "Not OK (ratelimit-bg-on)"
exit 1
fi
-if grep "Ratelimit-bg-off: \[.\?10.20.30.40.\?\]" outfile; then
- :
-else
- echo "Not OK (ratelimit-bg-off)"
- exit 1
-fi
echo "OK"
www IN A 10.20.30.40
ENTRY_END
+ENTRY_BEGIN
+MATCH opcode qtype qname
+REPLY QR AA NOERROR
+ADJUST copy_id
+SECTION QUESTION
+www2 IN A
+SECTION ANSWER
+www2 IN A 10.20.30.40
+ENTRY_END
--- /dev/null
+server:
+ verbosity: 5
+ # num-threads: 1
+ interface: 127.0.0.1
+ port: @PORT@
+ use-syslog: no
+ directory: .
+ pidfile: "unbound.pid"
+ chroot: ""
+ username: ""
+ do-not-query-localhost: no
+
+ ratelimit: 1
+ ratelimit-factor: 0
+
+stub-zone:
+ name: "example.com."
+ stub-addr: "127.0.0.1@@TOPORT@"
+ stub-no-cache: yes
+
+remote-control:
+ control-enable: yes
+ control-interface: 127.0.0.1
+ # control-interface: ::1
+ control-port: @CONTROL_PORT@
+ server-key-file: "unbound_server.key"
+ server-cert-file: "unbound_server.pem"
+ control-key-file: "unbound_control.key"
+ control-cert-file: "unbound_control.pem"
--- /dev/null
+BaseName: ratelimit
+Version: 1.0
+Description: Test ratelimit.
+CreationDate: Sun Jan 30 00:40:00 CET 2022
+Maintainer: Yorgos Thessalonikefs
+Category:
+Component:
+CmdDepends:
+Depends:
+Help:
+Pre: ratelimit.pre
+Post: ratelimit.post
+Test: ratelimit.test
+AuxFiles:
+Passed:
+Failure:
--- /dev/null
+# #-- ratelimit.post --#
+# source the master var file when it's there
+[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
+# source the test var file when it's there
+[ -f .tpkg.var.test ] && source .tpkg.var.test
+#
+# do your teardown here
+. ../common.sh
+kill_pid $STUB_PID
+kill_pid $UNBOUND_PID
+if test -f unbound.log; then
+ echo ">>> unbound log"
+ cat unbound.log
+fi
--- /dev/null
+# #-- ratelimit.pre--#
+# source the master var file when it's there
+[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
+# use .tpkg.var.test for in test variable passing
+[ -f .tpkg.var.test ] && source .tpkg.var.test
+
+PRE="../.."
+. ../common.sh
+get_random_port 2
+UNBOUND_PORT=$RND_PORT
+STUB_PORT=$(($RND_PORT + 1))
+CONTROL_PORT=$(($RND_PORT + 2))
+echo "UNBOUND_PORT=$UNBOUND_PORT" >> .tpkg.var.test
+echo "STUB_PORT=$STUB_PORT" >> .tpkg.var.test
+echo "CONTROL_PORT=$CONTROL_PORT" >> .tpkg.var.test
+
+# start ldns-testnd
+get_ldns_testns
+$LDNS_TESTNS -v -p $STUB_PORT ratelimit.testns >stub.log 2>&1 &
+STUB_PID=$!
+echo "STUB_PID=$STUB_PID" >> .tpkg.var.test
+
+# make config file
+sed -e 's/@PORT\@/'$UNBOUND_PORT'/' -e 's/@TOPORT\@/'$STUB_PORT'/' -e 's/@CONTROL_PORT\@/'$CONTROL_PORT'/' < ratelimit.conf > ub.conf
+# start unbound in the background
+$PRE/unbound -d -c ub.conf >unbound.log 2>&1 &
+UNBOUND_PID=$!
+echo "UNBOUND_PID=$UNBOUND_PID" >> .tpkg.var.test
+
+wait_ldns_testns_up stub.log
+wait_unbound_up unbound.log
+
+cat .tpkg.var.test
--- /dev/null
+# #-- ratelimit.test --#
+# source the master var file when it's there
+[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
+# use .tpkg.var.test for in test variable passing
+[ -f .tpkg.var.test ] && source .tpkg.var.test
+
+PRE="../.."
+. ../common.sh
+
+get_make
+(cd $PRE; $MAKE streamtcp)
+
+# These tests rely on second time precision. To combat false negatives the
+# tests run multiple times and we allow 1/3 of the runs to fail.
+total_runs=6
+success_threshold=4 # 2/3*total_runs
+
+successes=0
+echo "> Three parallel queries"
+# For this test we send three parallel queries and we expect only one of them
+# to be allowed through each second.
+for i in $(seq 1 $total_runs); do
+ $PRE/streamtcp -na -f 127.0.0.1@$UNBOUND_PORT www1.example.com. A IN www2.example.com. A IN www3.example.com. A IN >outfile 2>&1
+ if test "$?" -ne 0; then
+ echo "exit status not OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+ fi
+ cat outfile
+ if test `grep "rcode: SERVFAIL" outfile | wc -l` -eq 2; then
+ ((successes++))
+ fi
+ # We don't have to wait for all the runs to complete if we know
+ # we passed the threshold.
+ if test $successes -ge $success_threshold; then
+ break
+ fi
+ sleep 1
+done
+if test $successes -ge $success_threshold; then
+ echo "Number of ratelimited queries OK for three parallel queries"
+else
+ echo "Number of ratelimited queries not OK for three parallel queries"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Number of ratelimited queries not OK for three parallel queries"
+ exit 1
+fi
+
+echo "> Activating ratelimit-factor"
+echo "$PRE/unbound-control -c ub.conf set_option ratelimit-factor: 3"
+$PRE/unbound-control -c ub.conf set_option ratelimit-factor: 3
+if test $? -ne 0; then
+ echo "wrong exit value after success"
+ exit 1
+fi
+
+slipped_through=0
+echo "> Three parallel queries with ratelimit-factor"
+# For this test we send three parallel queries and we expect at least two of
+# them to be allowed through at a given second; one from the ratelimit itself
+# and one from the ratelimit-factor.
+for i in {1..10}; do
+ $PRE/streamtcp -na -f 127.0.0.1@$UNBOUND_PORT www1.example.com. A IN www2.example.com. A IN www3.example.com. A IN >outfile 2>&1
+ if test "$?" -ne 0; then
+ echo "exit status not OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+ fi
+ cat outfile
+ if test `grep "rcode: SERVFAIL" outfile | wc -l` -lt 2; then
+ slipped_through=1
+ break
+ fi
+ sleep 2
+done
+if test $slipped_through -eq 0; then
+ echo "ratelimit-factor did not work"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "ratelimit-factor did not work"
+ exit 1
+fi
+echo "ratelimit-factor OK"
+
+echo "> Disabling ratelimit-factor"
+echo "$PRE/unbound-control -c ub.conf set_option ratelimit-factor: 0"
+$PRE/unbound-control -c ub.conf set_option ratelimit-factor: 0
+if test $? -ne 0; then
+ echo "wrong exit value after success"
+ exit 1
+fi
+echo "> Activating ratelimit-backoff"
+echo "$PRE/unbound-control -c ub.conf set_option ratelimit-backoff: yes"
+$PRE/unbound-control -c ub.conf set_option ratelimit-backoff: yes
+if test $? -ne 0; then
+ echo "wrong exit value after success"
+ exit 1
+fi
+
+successes=0
+echo "> Three parallel queries with backoff"
+# For this test we send three parallel queries. The ratelimit should be reached
+# for that second. Then for the next second we again send three parallel
+# queries and we expect none of them to be allowed through because of the
+# backoff logic that keeps rolling the RATE_WINDOW based on demand.
+for i in $(seq 1 $total_runs); do
+ $PRE/streamtcp -na -f 127.0.0.1@$UNBOUND_PORT www1.example.com. A IN www2.example.com. A IN www3.example.com. A IN >outfile 2>&1
+ if test "$?" -ne 0; then
+ echo "exit status not OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+ fi
+ sleep 1 # Limit is reached; it should also be active for the next second
+ $PRE/streamtcp -na -f 127.0.0.1@$UNBOUND_PORT www1.example.com. A IN www2.example.com. A IN www3.example.com. A IN >outfile 2>&1
+ if test "$?" -ne 0; then
+ echo "exit status not OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+ fi
+ cat outfile
+ if test `grep "rcode: SERVFAIL" outfile | wc -l` -eq 3; then
+ ((successes++))
+ fi
+ # We don't have to wait for all the runs to complete if we know
+ # we passed the threshold.
+ if test $successes -ge $success_threshold; then
+ break
+ fi
+done
+
+if test $successes -ge $success_threshold; then
+ echo "three parallel queries with backoff OK"
+else
+ echo "Number of ratelimited queries not OK for three parallel queries with backoff"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Number of ratelimited queries not OK for three parallel queries with backoff"
+ exit 1
+fi
+
+echo "> Three parallel queries after backoff RATE_WINDOW"
+sleep 3 # Make sure the RATE_WINDOW is renewed
+# For this test we make three parallel queries after the RATE_WINDOW has passed
+# without any new demand and we expect at least one query to pass through. This
+# is to check that the backoff logic does not insist on past (outside of
+# RATE_WINDOW) limits.
+$PRE/streamtcp -na -f 127.0.0.1@$UNBOUND_PORT www1.example.com. A IN www2.example.com. A IN www3.example.com. A IN >outfile 2>&1
+if test "$?" -ne 0; then
+ echo "exit status not OK"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Not OK"
+ exit 1
+fi
+cat outfile
+if test `grep "rcode: NOERROR" outfile | wc -l` -gt 0; then
+ echo "Number of ratelimited queries OK for three parallel queries after backoff RATE_WINDOW"
+else
+ echo "Number of ratelimited queries not OK for three parallel queries after backoff RATE_WINDOW"
+ echo "> cat logfiles"
+ cat outfile
+ cat unbound.log
+ echo "Number of ratelimited queries not OK for three parallel queries after backoff RATE_WINDOW"
+ exit 1
+fi
+exit 0
--- /dev/null
+; nameserver test file
+$ORIGIN example.com.
+$TTL 3600
+
+ENTRY_BEGIN
+MATCH opcode qtype
+REPLY QR AA NOERROR
+ADJUST copy_id copy_query
+SECTION QUESTION
+wild IN A
+SECTION ANSWER
+wild IN A 10.20.30.40
+ENTRY_END
--- /dev/null
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----
--- /dev/null
+-----BEGIN CERTIFICATE-----
+MIIDszCCAhsCFGD5193whHQ2bVdzbaQfdf1gc4SkMA0GCSqGSIb3DQEBCwUAMBIx
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+-----END CERTIFICATE-----
--- /dev/null
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----
--- /dev/null
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----