Adding upstream version 5.6.0.upstream/5.6.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 215 insertions, 0 deletions

diff --git a/daemon/cache.test/clear.test.lua b/daemon/cache.test/clear.test.lua
new file mode 100644
index 0000000..e1f6914
--- /dev/null
+++ b/daemon/cache.test/clear.test.lua
@@ -0,0 +1,215 @@
+-- unload modules which are not related to this test
+-- SPDX-License-Identifier: GPL-3.0-or-later
+
+if ta_signal_query then
+        modules.unload('ta_signal_query')
+end
+if priming then
+        modules.unload('priming')
+end
+if detect_time_skew then
+        modules.unload('detect_time_skew')
+end
+
+-- test. domain is used by some tests, allow it
+policy.add(policy.suffix(policy.PASS, {todname('test.')}))
+
+cache.size = 2*MB
+-- log_level('debug')
+
+-- Self-checks on globals
+assert(help() ~= nil)
+assert(worker.id ~= nil)
+-- Self-checks on facilities
+assert(cache.stats() ~= nil)
+assert(cache.backends() ~= nil)
+assert(worker.stats() ~= nil)
+assert(net.interfaces() ~= nil)
+-- Self-checks on loaded stuff
+assert(#modules.list() > 0)
+-- Self-check timers
+ev = event.recurrent(1 * sec, function () return 1 end)
+event.cancel(ev)
+ev = event.after(0, function () return 1 end)
+
+
+-- Import fake root zone; avoid interference with configured keyfile_default.
+trust_anchors.remove('.')
+trust_anchors.add('. IN DS 48409 8 2 3D63A0C25BCE86621DE63636F11B35B908EFE8E9381E0E3E9DEFD89EA952C27D')
+
+local check_answer = require('test_utils').check_answer
+
+-- do not attempt to contact outside world, operate only on cache
+net.ipv4 = false
+net.ipv6 = false
+-- do not listen, test is driven by config code
+env.KRESD_NO_LISTEN = true
+
+
+local function import_zone()
+	local import_res = require('ffi').C.zi_zone_import({ zone_file = 'testroot.zone' })
+	assert(import_res == 0)
+	-- beware that import takes at least 100 ms
+	worker.sleep(0.2)  -- zimport is delayed by 100 ms from function call
+	-- sanity checks - cache must be filled in
+	ok(cache.count() > 0, 'cache is not empty after import')
+	check_answer('root apex is in cache',
+                     '.', kres.type.NS, kres.rcode.NOERROR)
+	check_answer('deep subdomain is in cache',
+		     'a.b.subtree1.', kres.type.AAAA, kres.rcode.NOERROR)
+
+end
+
+local function test_exact_match_qtype()
+	nok(cache.clear('a.b.subtree1.', true, kres.type.A)['chunk_limit'],
+	     'single qname+qtype can be cleared at once')
+	check_answer('exact match on qname+qtype must flush RR from cache',
+		     'a.b.subtree1.', kres.type.A, kres.rcode.SERVFAIL)
+	check_answer('exact match on qname+qtype must not affect other RRs on the same node',
+		     'a.b.subtree1.', kres.type.AAAA, kres.rcode.NOERROR)
+	check_answer('exact match on qname must not affect parent',
+		     'b.subtree1.', kres.type.A, kres.rcode.NOERROR)
+end
+
+local function test_exact_match_qname()
+	res = cache.clear('a.b.SubTree1.')
+	is(res.count, 2, 'single qname can be cleared at once')
+	check_answer('exact match on qname must flush all RRs with the same owner from cache',
+		     'a.b.subtree1.', kres.type.AAAA, kres.rcode.SERVFAIL)
+	check_answer('exact match on qname must flush all RRs with the same owner from cache',
+		     'a.b.subtree1.', kres.type.A, kres.rcode.SERVFAIL)
+	check_answer('exact match on qname must flush all RRs with the same owner from cache',
+		     'a.b.subtree1.', kres.type.TXT, kres.rcode.SERVFAIL)
+	-- exact match for negative proofs is not implemented yet
+	--check_answer('exact match on qname must flush negative proofs for owner from cache',
+	--	     'a.b.subtree1.', kres.type.NULL, kres.rcode.SERVFAIL)
+	--check_answer('exact match on qname must not affect parent',
+	--	     'b.subtree1.', kres.type.A, kres.rcode.NOERROR)
+	-- same(cache.clear(), 0, 'full cache clear can be performed')
+	--check_answer('.', kres.type.NS, false)
+
+end
+
+local function test_subtree()
+	res = cache.clear('subtree1.')
+	nok(res.chunk_limit,
+	    'whole positive subtree must be flushed (does not include neg. proofs)')
+	ok(res.not_apex,
+	    'subtree clear below apex must be detected')
+        same(res.subtree, '.', 'detected apex must be returned')
+	check_answer('subtree variant must flush all RRs in subdomains from cache',
+		     'b.subtree1.', kres.type.A, kres.rcode.SERVFAIL)
+	check_answer('subtree variant must flush all RRs in subdomains from cache',
+		     'b.subtree1.', kres.type.TXT, kres.rcode.SERVFAIL)
+	check_answer('subtree variant must flush all RRs in subdomains from cache',
+		     'subtree1.', kres.type.TXT, kres.rcode.SERVFAIL)
+	check_answer('subtree variant must not affect parent',
+		     '.', kres.type.NS, kres.rcode.NOERROR)
+	-- same(cache.clear(), 0, 'full cache clear can be performed')
+	--check_answer('.', kres.type.NS, false)
+
+end
+
+local function test_callback()
+	local test_name = '20r.subtree2.'
+	local test_exactname = true
+	local test_rrtype = nil
+	local test_chunksize = 1
+	local test_prev_state = { works = true }
+	local function check_callback(name, exact_name, rr_type, chunk_size, callback, prev_state, errors)
+		is(errors.count, 1, 'callback received correct # of removed records')
+		is(test_name, name, 'callback received subtree name')
+		is(test_exactname, exact_name, 'callback received exact_name')
+		is(test_rrtype, rr_type, 'callback received rr_type')
+		is(test_chunksize, chunk_size, 'callback received chunk_size')
+		is(check_callback, callback, 'callback received reference to itself')
+		is(type(errors), 'table', 'callback received table of errors')
+		same(test_prev_state, prev_state, 'callback received previous state')
+		return 666
+	end
+	same(cache.clear(test_name, test_exactname, test_rrtype, test_chunksize, check_callback, test_prev_state),
+	     666, 'first callback return value is passed to cache.clear() caller')
+	local cnt_before_wait = cache.count()
+	worker.sleep(0.2)
+	is(cnt_before_wait, cache.count(), 'custom callback can stop clearing')
+end
+
+local function test_subtree_limit()  -- default limit = 100
+	res = cache.clear('subtree2.', false, nil)
+	ok(res.chunk_limit,
+	   'chunk_size limit must be respected')
+	is(res.count, 100,
+	   'chunk_size limit must match returned count')
+
+	-- callbacks are running in background so we can now wait
+	-- and later verify that everything was removed
+	-- 200 RRs, 100 was removed in first call
+	-- so the rest should be removed in single invocation of callback
+	-- hopefully the machine is not too slow ...
+	worker.sleep(0.1)
+	res = cache.clear('subtree2.', false, nil)
+	is(res.count, 0,
+	   'previous calls + callbacks must have removed everything')
+end
+
+local function test_apex()
+	check_answer('a negative proof is still present in cache',
+		     'aaaaa.b.subtree1.', kres.type.TXT, kres.rcode.NXDOMAIN)
+
+	local prev_count = cache.count()
+	ok(prev_count > 0, 'previous subtree clearing did not remove everything')
+	res = cache.clear('.', false, nil, 10000)
+	is(res.count, prev_count, 'clear on root removed everything including proofs')
+	check_answer('exact match on qname must flush negative proofs for owner from cache',
+		     'a.b.subtree1.', kres.type.NULL, kres.rcode.SERVFAIL)
+end
+
+local function test_root()
+	check_answer('root apex is still in cache',
+                     '.', kres.type.NS, kres.rcode.NOERROR)
+	res = cache.clear('.', true)
+	check_answer('root apex is in no longer cache',
+                     '.', kres.type.NS, kres.rcode.SERVFAIL)
+	check_answer('some other item is still in cache',
+                     '16r.subtree2.', kres.type.A, kres.rcode.NOERROR)
+
+	local prev_count = cache.count()
+	res = cache.clear('.')
+	is(res.count, prev_count, 'full clear reports correct number of entries')
+	is(cache.count(), 0, 'clearing root clears everything')
+end
+
+local function test_complete_flush()
+	local prev_count = cache.count()
+	res = cache.clear()
+	is(res.count, prev_count, 'full clear reports correct number of entries')
+	is(cache.count(), 0, 'cache is empty after full clear')
+end
+
+local function test_cache_used(lower, upper)
+	return function()
+		local usage = cache.stats().usage_percent
+		ok(usage >= lower and usage <= upper,
+		   string.format('cache percentage usage %.1f is between <%d, %d>', usage, lower, upper))
+	end
+end
+
+return {
+	test_cache_used(0, 1),
+	import_zone,
+	test_cache_used(9, 11),
+	test_exact_match_qtype,
+	test_exact_match_qname,
+	test_callback,
+	import_zone,
+	test_subtree,
+	test_cache_used(9, 11),
+	test_subtree_limit,
+	test_cache_used(5, 8),
+	test_apex,
+	import_zone,
+	test_root,
+	import_zone,
+	test_complete_flush,
+	test_cache_used(0, 1),
+}