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-- 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
-- verbose(true)
-- 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 = cache.zone_import('testroot.zone')
assert(import_res.code == 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 everyting 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 is between <%d, %d>', lower, upper))
end
end
return {
test_cache_used(0, 1),
import_zone,
test_cache_used(11, 12),
test_exact_match_qtype,
test_exact_match_qname,
test_callback,
import_zone,
test_subtree,
test_cache_used(10, 11),
test_subtree_limit,
test_cache_used(5, 6),
test_apex,
import_zone,
test_root,
import_zone,
test_complete_flush,
test_cache_used(0, 1),
}
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