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bind9/tests/dns/badcache_test.c
Ondřej Surý f5c204ac3e
Move the library init and shutdown to executables 
Instead of relying on unreliable order of execution of the library
constructors and destructors, move them to individual binaries.  The
advantage is that the execution time and order will remain constant and
will not depend on the dynamic load dependency solver.

This requires more work, but that was mitigated by a simple requirement,
any executable using libisc and libdns, must include <isc/lib.h> and
<dns/lib.h> respectively (in this particular order).  In turn, these two
headers must not be included from within any library as they contain
inlined functions marked with constructor/destructor attributes.
2025-02-22 16:19:00 +01:00

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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <inttypes.h>
#include <sched.h> /* IWYU pragma: keep */
#include <setjmp.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define UNIT_TESTING
#include <cmocka.h>
#include <isc/buffer.h>
#include <isc/commandline.h>
#include <isc/lib.h>
#include <isc/md.h>
#include <isc/mem.h>
#include <isc/os.h>
#include <isc/thread.h>
#include <isc/urcu.h>
#include <isc/util.h>
#include <isc/uv.h>
#include <dns/badcache.h>
#include <dns/compress.h>
#include <dns/fixedname.h>
#include <dns/lib.h>
#include <dns/name.h>
#include <dns/rdatatype.h>
#include <tests/dns.h>
#define BADCACHE_TEST_FLAG 1 << 3
ISC_LOOP_TEST_IMPL(basic) {
dns_badcache_t *bc = NULL;
dns_fixedname_t fname = { 0 };
dns_name_t *name = dns_fixedname_initname(&fname);
isc_stdtime_t now = isc_stdtime_now();
isc_result_t result;
uint32_t flags = BADCACHE_TEST_FLAG;
dns_name_fromstring(name, "example.com.", NULL, 0, NULL);
bc = dns_badcache_new(mctx, loopmgr);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now + 60);
flags = 0;
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
assert_int_equal(flags, BADCACHE_TEST_FLAG);
flags = 0;
result = dns_badcache_find(bc, name, dns_rdatatype_a, &flags, now);
assert_int_equal(result, ISC_R_NOTFOUND);
assert_int_equal(flags, 0);
dns_badcache_destroy(&bc);
isc_loopmgr_shutdown(loopmgr);
}
ISC_LOOP_TEST_IMPL(expire) {
dns_badcache_t *bc = NULL;
dns_fixedname_t fname = { 0 };
dns_name_t *name = dns_fixedname_initname(&fname);
isc_stdtime_t now = isc_stdtime_now();
isc_result_t result;
uint32_t flags = BADCACHE_TEST_FLAG;
dns_name_fromstring(name, "example.com.", NULL, 0, NULL);
bc = dns_badcache_new(mctx, loopmgr);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now + 60);
dns_badcache_add(bc, name, dns_rdatatype_a, flags, now + 60);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
assert_int_equal(flags, BADCACHE_TEST_FLAG);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags,
now + 61);
assert_int_equal(result, ISC_R_NOTFOUND);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_NOTFOUND);
result = dns_badcache_find(bc, name, dns_rdatatype_a, &flags, now);
assert_int_equal(result, ISC_R_NOTFOUND);
dns_badcache_add(bc, name, dns_rdatatype_a, flags, now + 120);
result = dns_badcache_find(bc, name, dns_rdatatype_a, &flags, now + 61);
assert_int_equal(result, ISC_R_SUCCESS);
assert_int_equal(flags, BADCACHE_TEST_FLAG);
dns_badcache_destroy(&bc);
isc_loopmgr_shutdown(loopmgr);
}
ISC_LOOP_TEST_IMPL(print) {
dns_badcache_t *bc = NULL;
dns_fixedname_t fname = { 0 };
dns_name_t *name = dns_fixedname_initname(&fname);
isc_stdtime_t now = isc_stdtime_now();
isc_stdtime_t expire = now + 60;
uint32_t flags = BADCACHE_TEST_FLAG;
FILE *file = NULL;
char buf[4096];
size_t len;
char *pos;
char *endptr;
const char *header_part = ";\n; badcache\n;\n";
const char *bol_part = "; ";
const char *name_part = "example.com/";
const char *ttl_part = " [ttl ";
const char *eol_part = "]\n";
size_t num_a = 0;
bool seen_a = false, seen_aaaa = false;
long ttl;
dns_name_fromstring(name, "example.com.", NULL, 0, NULL);
bc = dns_badcache_new(mctx, loopmgr);
dns_badcache_add(bc, name, dns_rdatatype_a, flags, expire);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, expire);
file = fopen("./badcache.out", "w");
dns_badcache_print(bc, "badcache", file);
fclose(file);
file = fopen("./badcache.out", "r");
len = fread(buf, sizeof(buf[0]), ARRAY_SIZE(buf), file);
assert_int_equal(len, 68);
fclose(file);
pos = buf;
assert_memory_equal(pos, header_part, strlen(header_part));
pos += strlen(header_part);
line:
/* There's no fixed order for A and AAAA types in the hash table */
assert_memory_equal(pos, bol_part, strlen(bol_part));
pos += strlen(bol_part);
assert_memory_equal(pos, name_part, strlen(name_part));
pos += strlen(name_part);
num_a = 0;
while (*pos == 'A') {
num_a++;
pos++;
}
switch (num_a) {
case 1:
seen_a = true;
break;
case 4:
seen_aaaa = true;
break;
default:
assert_true(num_a == 1 || num_a == 4);
}
assert_memory_equal(pos, ttl_part, strlen(ttl_part));
pos += strlen(ttl_part);
ttl = strtol(pos, &endptr, 0);
assert_ptr_not_equal(pos, endptr);
assert_true(ttl >= 0 && ttl <= 60);
pos = endptr;
assert_memory_equal(pos, eol_part, strlen(eol_part));
pos += strlen(eol_part);
if (!seen_a || !seen_aaaa) {
goto line;
}
assert_int_equal(pos - buf, len);
dns_badcache_destroy(&bc);
isc_loopmgr_shutdown(loopmgr);
}
ISC_LOOP_TEST_IMPL(flush) {
dns_badcache_t *bc = NULL;
dns_fixedname_t fname = { 0 };
dns_name_t *name = dns_fixedname_initname(&fname);
isc_stdtime_t now = isc_stdtime_now();
isc_result_t result;
uint32_t flags = BADCACHE_TEST_FLAG;
dns_name_fromstring(name, "example.com.", NULL, 0, NULL);
bc = dns_badcache_new(mctx, loopmgr);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now + 60);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
dns_badcache_flush(bc);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_NOTFOUND);
dns_badcache_destroy(&bc);
isc_loopmgr_shutdown(loopmgr);
}
ISC_LOOP_TEST_IMPL(flushname) {
dns_badcache_t *bc = NULL;
dns_fixedname_t fname = { 0 };
dns_name_t *name = dns_fixedname_initname(&fname);
isc_stdtime_t now = isc_stdtime_now();
isc_result_t result;
uint32_t flags = BADCACHE_TEST_FLAG;
bc = dns_badcache_new(mctx, loopmgr);
dns_name_fromstring(name, "example.com.", NULL, 0, NULL);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now + 60);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
dns_name_fromstring(name, "sub.example.com.", NULL, 0, NULL);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now + 60);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
dns_name_fromstring(name, "sub.sub.example.com.", NULL, 0, NULL);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now + 60);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
dns_name_fromstring(name, "sub.example.com.", NULL, 0, NULL);
dns_badcache_flushname(bc, name);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_NOTFOUND);
result = dns_badcache_find(bc, name, dns_rdatatype_a, &flags, now);
assert_int_equal(result, ISC_R_NOTFOUND);
dns_name_fromstring(name, "sub.sub.example.com.", NULL, 0, NULL);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
dns_name_fromstring(name, "example.com.", NULL, 0, NULL);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
dns_badcache_destroy(&bc);
isc_loopmgr_shutdown(loopmgr);
}
ISC_LOOP_TEST_IMPL(flushtree) {
dns_badcache_t *bc = NULL;
dns_fixedname_t fname = { 0 };
dns_name_t *name = dns_fixedname_initname(&fname);
isc_stdtime_t now = isc_stdtime_now();
isc_result_t result;
uint32_t flags = BADCACHE_TEST_FLAG;
bc = dns_badcache_new(mctx, loopmgr);
dns_name_fromstring(name, "example.com.", NULL, 0, NULL);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now + 60);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
assert_int_equal(flags, BADCACHE_TEST_FLAG);
dns_name_fromstring(name, "sub.example.com.", NULL, 0, NULL);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now + 60);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
assert_int_equal(flags, BADCACHE_TEST_FLAG);
dns_name_fromstring(name, "sub.sub.example.com.", NULL, 0, NULL);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now + 60);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
assert_int_equal(flags, BADCACHE_TEST_FLAG);
dns_name_fromstring(name, "sub.example.com.", NULL, 0, NULL);
dns_badcache_flushtree(bc, name);
dns_name_fromstring(name, "sub.sub.example.com.", NULL, 0, NULL);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_NOTFOUND);
dns_name_fromstring(name, "sub.example.com.", NULL, 0, NULL);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_NOTFOUND);
dns_name_fromstring(name, "example.com.", NULL, 0, NULL);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags, now);
assert_int_equal(result, ISC_R_SUCCESS);
assert_int_equal(flags, BADCACHE_TEST_FLAG);
dns_badcache_destroy(&bc);
isc_loopmgr_shutdown(loopmgr);
}
ISC_LOOP_TEST_IMPL(purge) {
dns_badcache_t *bc = NULL;
dns_fixedname_t fname = { 0 };
dns_name_t *name = dns_fixedname_initname(&fname);
isc_stdtime_t now = isc_stdtime_now();
isc_result_t result;
uint32_t flags = BADCACHE_TEST_FLAG;
bc = dns_badcache_new(mctx, loopmgr);
dns_name_fromstring(name, "example.com.", NULL, 0, NULL);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags,
now - 60);
assert_int_equal(result, ISC_R_SUCCESS);
dns_name_fromstring(name, "sub.example.com.", NULL, 0, NULL);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags,
now - 60);
assert_int_equal(result, ISC_R_SUCCESS);
dns_name_fromstring(name, "sub.sub.example.com.", NULL, 0, NULL);
dns_badcache_add(bc, name, dns_rdatatype_aaaa, flags, now);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags,
now - 60);
assert_int_equal(result, ISC_R_SUCCESS);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags,
now + 30);
assert_int_equal(result, ISC_R_NOTFOUND);
dns_name_fromstring(name, "sub.sub.example.com.", NULL, 0, NULL);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags,
now + 30);
assert_int_equal(result, ISC_R_NOTFOUND);
dns_name_fromstring(name, "sub.example.com.", NULL, 0, NULL);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags,
now + 30);
assert_int_equal(result, ISC_R_NOTFOUND);
dns_name_fromstring(name, "example.com.", NULL, 0, NULL);
result = dns_badcache_find(bc, name, dns_rdatatype_aaaa, &flags,
now + 30);
assert_int_equal(result, ISC_R_NOTFOUND);
dns_badcache_destroy(&bc);
isc_loopmgr_shutdown(loopmgr);
}
ISC_TEST_LIST_START
ISC_TEST_ENTRY_CUSTOM(basic, setup_managers, teardown_managers)
ISC_TEST_ENTRY_CUSTOM(expire, setup_managers, teardown_managers)
ISC_TEST_ENTRY_CUSTOM(print, setup_managers, teardown_managers)
ISC_TEST_ENTRY_CUSTOM(flush, setup_managers, teardown_managers)
ISC_TEST_ENTRY_CUSTOM(flushname, setup_managers, teardown_managers)
ISC_TEST_ENTRY_CUSTOM(flushtree, setup_managers, teardown_managers)
ISC_TEST_ENTRY_CUSTOM(purge, setup_managers, teardown_managers)
ISC_TEST_LIST_END
ISC_TEST_MAIN
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