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/* Copyright (C) 2024 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/>.
*/
#include <assert.h>
#include <inttypes.h>
#include <tap/basic.h>
#include "libknot/rrset.h"
#include "libknot/descriptor.h"
static bool check_rrset(const knot_rrset_t *rrset, const knot_dname_t *owner,
uint16_t type, uint16_t rclass, uint32_t ttl)
{
if (!rrset) {
return false;
}
const bool dname_cmp = owner == NULL ? rrset->owner == NULL :
knot_dname_is_equal(rrset->owner, owner);
return rrset->type == type && rrset->rclass == rclass && dname_cmp &&
rrset->ttl == ttl && rrset->rrs.count == 0; // We do not test rdataset here
}
static void check_size(knot_rrset_t *rrset, uint8_t *rdata, size_t rdata_len)
{
const size_t per_record_const = 10;
const size_t owner_len = knot_dname_size(rrset->owner);
assert(owner_len == 13);
static size_t real = 0, estim = 0;
if (rdata_len > 0) {
real += owner_len + per_record_const + rdata_len;
estim += owner_len + per_record_const + rdata_len + (rdata_len & 1);
assert(real <= estim);
}
int ret = knot_rrset_add_rdata(rrset, rdata, rdata_len, NULL);
is_int(ret, KNOT_EOK, "knot_rrset_add_rdata()");
is_int(real, knot_rrset_size(rrset), "knot_rrset_size()");
is_int(estim, knot_rrset_size_estimate(rrset), "knot_rrset_size_estimate()");
}
static void test_rrset_size(void)
{
knot_dname_t *owner = knot_dname_from_str_alloc("rrset.owner.");
assert(owner);
knot_rrset_t rrset;
knot_rrset_init(&rrset, owner, KNOT_RRTYPE_TXT, KNOT_CLASS_IN, 7200);
check_size(&rrset, (uint8_t *)"\x01""a", 2);
check_size(&rrset, (uint8_t *)"\x02""ab", 3);
check_size(&rrset, (uint8_t *)"\x03""abc", 4);
check_size(&rrset, (uint8_t *)"\x03""de", 3);
check_size(&rrset, (uint8_t *)"\x01""f", 2);
knot_rrset_clear(&rrset, NULL);
}
int main(int argc, char *argv[])
{
plan_lazy();
// Test new
knot_dname_t *dummy_owner = knot_dname_from_str_alloc("test.");
assert(dummy_owner);
knot_rrset_t *rrset = knot_rrset_new(dummy_owner, KNOT_RRTYPE_TXT,
KNOT_CLASS_IN, 3600, NULL);
ok(rrset != NULL, "rrset: create.");
assert(rrset);
ok(check_rrset(rrset, dummy_owner, KNOT_RRTYPE_TXT, KNOT_CLASS_IN, 3600),
"rrset: set fields during create.");
// Test init
knot_dname_free(dummy_owner, NULL);
dummy_owner = knot_dname_from_str_alloc("test2.");
assert(dummy_owner);
knot_dname_free(rrset->owner, NULL);
knot_rrset_init(rrset, dummy_owner, KNOT_RRTYPE_A, KNOT_CLASS_CH, 7200);
ok(check_rrset(rrset, dummy_owner, KNOT_RRTYPE_A, KNOT_CLASS_CH, 7200),
"rrset: init.");
// Test copy
knot_rrset_t *copy = knot_rrset_copy(rrset, NULL);
ok(copy != NULL, "rrset: copy.");
ok(check_rrset(copy, rrset->owner, rrset->type, rrset->rclass, 7200),
"rrset: set fields during copy.");
ok(knot_rrset_copy(NULL, NULL) == NULL, "rrset: copy NULL.");
assert(copy);
// Test equal - same TTL
ok(knot_rrset_equal(rrset, copy, true), "rrset: cmp same TTL");
// Test equal - different TTL
copy->ttl++;
ok(!knot_rrset_equal(rrset, copy, true), "rrset: cmp different TTL");
// Test equal - ignore TTL
ok(knot_rrset_equal(rrset, copy, false), "rrset: cmp ignore TTL");
copy->ttl = rrset->ttl;
// Test equal - different type
copy->type++;
ok(!knot_rrset_equal(rrset, copy, true), "rrset: cmp different type");
copy->type = rrset->type;
// Test equal - owners
knot_dname_free(rrset->owner, NULL);
rrset->owner = NULL;
ok(!knot_rrset_equal(rrset, copy, true), "rrset: cmp NULL owner");
knot_dname_free(copy->owner, NULL);
copy->owner = NULL;
ok(knot_rrset_equal(rrset, copy, true), "rrset: cmp NULL owners");
// Test equal - different rdata
knot_rrset_add_rdata(copy, (const uint8_t *)"abc", 3, NULL);
ok(!knot_rrset_equal(rrset, copy, true), "rrset: cmp different rdata");
// Test clear
knot_rrset_clear(rrset, NULL);
ok(rrset->owner == NULL, "rrset: clear.");
// Test empty
ok(knot_rrset_empty(rrset), "rrset: empty.");
ok(knot_rrset_empty(NULL), "rrset: empty NULL.");
copy->rrs.count = 1;
ok(!knot_rrset_empty(copy), "rrset: not empty.");
// Test init empty
knot_rrset_init_empty(rrset);
ok(check_rrset(rrset, NULL, 0, KNOT_CLASS_IN, 0), "rrset: init empty.");
// "Test" freeing
knot_rrset_free(rrset, NULL);
knot_rrset_free(copy, NULL);
// Test rrset size computation functions.
test_rrset_size();
return 0;
}
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