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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 <stdlib.h>
#include <string.h>
#include <unistd.h>
#define UNIT_TESTING
#include <cmocka.h>
#include <isc/buffer.h>
#include <isc/commandline.h>
#include <isc/mem.h>
#include <isc/os.h>
#include <isc/print.h>
#include <isc/thread.h>
#include <isc/util.h>
#include <dns/compress.h>
#include <dns/fixedname.h>
#include <dns/name.h>
#include <tests/dns.h>
/* Set to true (or use -v option) for verbose output */
static bool verbose = false;
/* dns_name_fullcompare test */
ISC_RUN_TEST_IMPL(fullcompare) {
dns_fixedname_t fixed1;
dns_fixedname_t fixed2;
dns_name_t *name1;
dns_name_t *name2;
dns_namereln_t relation;
int i;
isc_result_t result;
struct {
const char *name1;
const char *name2;
dns_namereln_t relation;
int order;
unsigned int nlabels;
} data[] = {
/* relative */
{ "", "", dns_namereln_equal, 0, 0 },
{ "foo", "", dns_namereln_subdomain, 1, 0 },
{ "", "foo", dns_namereln_contains, -1, 0 },
{ "foo", "bar", dns_namereln_none, 4, 0 },
{ "bar", "foo", dns_namereln_none, -4, 0 },
{ "bar.foo", "foo", dns_namereln_subdomain, 1, 1 },
{ "foo", "bar.foo", dns_namereln_contains, -1, 1 },
{ "baz.bar.foo", "bar.foo", dns_namereln_subdomain, 1, 2 },
{ "bar.foo", "baz.bar.foo", dns_namereln_contains, -1, 2 },
{ "foo.example", "bar.example", dns_namereln_commonancestor, 4,
1 },
/* absolute */
{ ".", ".", dns_namereln_equal, 0, 1 },
{ "foo.", "bar.", dns_namereln_commonancestor, 4, 1 },
{ "bar.", "foo.", dns_namereln_commonancestor, -4, 1 },
{ "foo.example.", "bar.example.", dns_namereln_commonancestor,
4, 2 },
{ "bar.foo.", "foo.", dns_namereln_subdomain, 1, 2 },
{ "foo.", "bar.foo.", dns_namereln_contains, -1, 2 },
{ "baz.bar.foo.", "bar.foo.", dns_namereln_subdomain, 1, 3 },
{ "bar.foo.", "baz.bar.foo.", dns_namereln_contains, -1, 3 },
{ NULL, NULL, dns_namereln_none, 0, 0 }
};
UNUSED(state);
name1 = dns_fixedname_initname(&fixed1);
name2 = dns_fixedname_initname(&fixed2);
for (i = 0; data[i].name1 != NULL; i++) {
int order = 3000;
unsigned int nlabels = 3000;
if (data[i].name1[0] == 0) {
dns_fixedname_init(&fixed1);
} else {
result = dns_name_fromstring2(name1, data[i].name1,
NULL, 0, NULL);
assert_int_equal(result, ISC_R_SUCCESS);
}
if (data[i].name2[0] == 0) {
dns_fixedname_init(&fixed2);
} else {
result = dns_name_fromstring2(name2, data[i].name2,
NULL, 0, NULL);
assert_int_equal(result, ISC_R_SUCCESS);
}
relation = dns_name_fullcompare(name1, name1, &order, &nlabels);
assert_int_equal(relation, dns_namereln_equal);
assert_int_equal(order, 0);
assert_int_equal(nlabels, name1->labels);
/* Some random initializer */
order = 3001;
nlabels = 3001;
relation = dns_name_fullcompare(name1, name2, &order, &nlabels);
assert_int_equal(relation, data[i].relation);
assert_int_equal(order, data[i].order);
assert_int_equal(nlabels, data[i].nlabels);
}
}
static void
compress_test(dns_name_t *name1, dns_name_t *name2, dns_name_t *name3,
unsigned char *expected, unsigned int length,
dns_compress_t *cctx, dns_decompress_t *dctx) {
isc_buffer_t source;
isc_buffer_t target;
dns_name_t name;
unsigned char buf1[1024];
unsigned char buf2[1024];
isc_buffer_init(&source, buf1, sizeof(buf1));
isc_buffer_init(&target, buf2, sizeof(buf2));
assert_int_equal(dns_name_towire(name1, cctx, &source), ISC_R_SUCCESS);
assert_int_equal(dns_name_towire(name2, cctx, &source), ISC_R_SUCCESS);
assert_int_equal(dns_name_towire(name2, cctx, &source), ISC_R_SUCCESS);
assert_int_equal(dns_name_towire(name3, cctx, &source), ISC_R_SUCCESS);
isc_buffer_setactive(&source, source.used);
dns_name_init(&name, NULL);
RUNTIME_CHECK(dns_name_fromwire(&name, &source, dctx, 0, &target) ==
ISC_R_SUCCESS);
RUNTIME_CHECK(dns_name_fromwire(&name, &source, dctx, 0, &target) ==
ISC_R_SUCCESS);
RUNTIME_CHECK(dns_name_fromwire(&name, &source, dctx, 0, &target) ==
ISC_R_SUCCESS);
RUNTIME_CHECK(dns_name_fromwire(&name, &source, dctx, 0, &target) ==
ISC_R_SUCCESS);
dns_decompress_invalidate(dctx);
assert_int_equal(target.used, length);
assert_true(memcmp(target.base, expected, target.used) == 0);
}
/* name compression test */
ISC_RUN_TEST_IMPL(compression) {
unsigned int allowed;
dns_compress_t cctx;
dns_decompress_t dctx;
dns_name_t name1;
dns_name_t name2;
dns_name_t name3;
isc_region_t r;
unsigned char plain1[] = "\003yyy\003foo";
unsigned char plain2[] = "\003bar\003yyy\003foo";
unsigned char plain3[] = "\003xxx\003bar\003foo";
unsigned char plain[] = "\003yyy\003foo\0\003bar\003yyy\003foo\0\003"
"bar\003yyy\003foo\0\003xxx\003bar\003foo";
UNUSED(state);
dns_name_init(&name1, NULL);
r.base = plain1;
r.length = sizeof(plain1);
dns_name_fromregion(&name1, &r);
dns_name_init(&name2, NULL);
r.base = plain2;
r.length = sizeof(plain2);
dns_name_fromregion(&name2, &r);
dns_name_init(&name3, NULL);
r.base = plain3;
r.length = sizeof(plain3);
dns_name_fromregion(&name3, &r);
/* Test 1: NONE */
allowed = DNS_COMPRESS_NONE;
assert_int_equal(dns_compress_init(&cctx, -1, mctx), ISC_R_SUCCESS);
dns_compress_setmethods(&cctx, allowed);
dns_decompress_init(&dctx, -1, DNS_DECOMPRESS_STRICT);
dns_decompress_setmethods(&dctx, allowed);
compress_test(&name1, &name2, &name3, plain, sizeof(plain), &cctx,
&dctx);
dns_compress_rollback(&cctx, 0);
dns_compress_invalidate(&cctx);
/* Test2: GLOBAL14 */
allowed = DNS_COMPRESS_GLOBAL14;
assert_int_equal(dns_compress_init(&cctx, -1, mctx), ISC_R_SUCCESS);
dns_compress_setmethods(&cctx, allowed);
dns_decompress_init(&dctx, -1, DNS_DECOMPRESS_STRICT);
dns_decompress_setmethods(&dctx, allowed);
compress_test(&name1, &name2, &name3, plain, sizeof(plain), &cctx,
&dctx);
dns_compress_rollback(&cctx, 0);
dns_compress_invalidate(&cctx);
/* Test3: ALL */
allowed = DNS_COMPRESS_ALL;
assert_int_equal(dns_compress_init(&cctx, -1, mctx), ISC_R_SUCCESS);
dns_compress_setmethods(&cctx, allowed);
dns_decompress_init(&dctx, -1, DNS_DECOMPRESS_STRICT);
dns_decompress_setmethods(&dctx, allowed);
compress_test(&name1, &name2, &name3, plain, sizeof(plain), &cctx,
&dctx);
dns_compress_rollback(&cctx, 0);
dns_compress_invalidate(&cctx);
/* Test4: NONE disabled */
allowed = DNS_COMPRESS_NONE;
assert_int_equal(dns_compress_init(&cctx, -1, mctx), ISC_R_SUCCESS);
dns_compress_setmethods(&cctx, allowed);
dns_compress_disable(&cctx);
dns_decompress_init(&dctx, -1, DNS_DECOMPRESS_STRICT);
dns_decompress_setmethods(&dctx, allowed);
compress_test(&name1, &name2, &name3, plain, sizeof(plain), &cctx,
&dctx);
dns_compress_rollback(&cctx, 0);
dns_compress_invalidate(&cctx);
/* Test5: GLOBAL14 disabled */
allowed = DNS_COMPRESS_GLOBAL14;
assert_int_equal(dns_compress_init(&cctx, -1, mctx), ISC_R_SUCCESS);
dns_compress_setmethods(&cctx, allowed);
dns_compress_disable(&cctx);
dns_decompress_init(&dctx, -1, DNS_DECOMPRESS_STRICT);
dns_decompress_setmethods(&dctx, allowed);
compress_test(&name1, &name2, &name3, plain, sizeof(plain), &cctx,
&dctx);
dns_compress_rollback(&cctx, 0);
dns_compress_invalidate(&cctx);
/* Test6: ALL disabled */
allowed = DNS_COMPRESS_ALL;
assert_int_equal(dns_compress_init(&cctx, -1, mctx), ISC_R_SUCCESS);
dns_compress_setmethods(&cctx, allowed);
dns_compress_disable(&cctx);
dns_decompress_init(&dctx, -1, DNS_DECOMPRESS_STRICT);
dns_decompress_setmethods(&dctx, allowed);
compress_test(&name1, &name2, &name3, plain, sizeof(plain), &cctx,
&dctx);
dns_compress_rollback(&cctx, 0);
dns_compress_invalidate(&cctx);
}
/* is trust-anchor-telemetry test */
ISC_RUN_TEST_IMPL(istat) {
dns_fixedname_t fixed;
dns_name_t *name;
isc_result_t result;
size_t i;
struct {
const char *name;
bool istat;
} data[] = { { ".", false },
{ "_ta-", false },
{ "_ta-1234", true },
{ "_TA-1234", true },
{ "+TA-1234", false },
{ "_fa-1234", false },
{ "_td-1234", false },
{ "_ta_1234", false },
{ "_ta-g234", false },
{ "_ta-1h34", false },
{ "_ta-12i4", false },
{ "_ta-123j", false },
{ "_ta-1234-abcf", true },
{ "_ta-1234-abcf-ED89", true },
{ "_ta-12345-abcf-ED89", false },
{ "_ta-.example", false },
{ "_ta-1234.example", true },
{ "_ta-1234-abcf.example", true },
{ "_ta-1234-abcf-ED89.example", true },
{ "_ta-12345-abcf-ED89.example", false },
{ "_ta-1234-abcfe-ED89.example", false },
{ "_ta-1234-abcf-EcD89.example", false } };
UNUSED(state);
name = dns_fixedname_initname(&fixed);
for (i = 0; i < (sizeof(data) / sizeof(data[0])); i++) {
result = dns_name_fromstring(name, data[i].name, 0, NULL);
assert_int_equal(result, ISC_R_SUCCESS);
assert_int_equal(dns_name_istat(name), data[i].istat);
}
}
/* dns_nane_init */
ISC_RUN_TEST_IMPL(init) {
dns_name_t name;
unsigned char offsets[1];
UNUSED(state);
dns_name_init(&name, offsets);
assert_null(name.ndata);
assert_int_equal(name.length, 0);
assert_int_equal(name.labels, 0);
assert_int_equal(name.attributes, 0);
assert_ptr_equal(name.offsets, offsets);
assert_null(name.buffer);
}
/* dns_nane_invalidate */
ISC_RUN_TEST_IMPL(invalidate) {
dns_name_t name;
unsigned char offsets[1];
UNUSED(state);
dns_name_init(&name, offsets);
dns_name_invalidate(&name);
assert_null(name.ndata);
assert_int_equal(name.length, 0);
assert_int_equal(name.labels, 0);
assert_int_equal(name.attributes, 0);
assert_null(name.offsets);
assert_null(name.buffer);
}
/* dns_nane_setbuffer/hasbuffer */
ISC_RUN_TEST_IMPL(buffer) {
dns_name_t name;
unsigned char buf[BUFSIZ];
isc_buffer_t b;
UNUSED(state);
isc_buffer_init(&b, buf, BUFSIZ);
dns_name_init(&name, NULL);
dns_name_setbuffer(&name, &b);
assert_ptr_equal(name.buffer, &b);
assert_true(dns_name_hasbuffer(&name));
}
/* dns_nane_isabsolute */
ISC_RUN_TEST_IMPL(isabsolute) {
struct {
const char *namestr;
bool expect;
} testcases[] = { { "x", false },
{ "a.b.c.d.", true },
{ "x.z", false } };
unsigned int i;
UNUSED(state);
for (i = 0; i < (sizeof(testcases) / sizeof(testcases[0])); i++) {
isc_result_t result;
dns_name_t name;
unsigned char data[BUFSIZ];
isc_buffer_t b, nb;
size_t len;
len = strlen(testcases[i].namestr);
isc_buffer_constinit(&b, testcases[i].namestr, len);
isc_buffer_add(&b, len);
dns_name_init(&name, NULL);
isc_buffer_init(&nb, data, BUFSIZ);
dns_name_setbuffer(&name, &nb);
result = dns_name_fromtext(&name, &b, NULL, 0, NULL);
assert_int_equal(result, ISC_R_SUCCESS);
assert_int_equal(dns_name_isabsolute(&name),
testcases[i].expect);
}
}
/* dns_nane_hash */
ISC_RUN_TEST_IMPL(hash) {
struct {
const char *name1;
const char *name2;
bool expect;
bool expecti;
} testcases[] = {
{ "a.b.c.d", "A.B.C.D", true, false },
{ "a.b.c.d.", "A.B.C.D.", true, false },
{ "a.b.c.d", "a.b.c.d", true, true },
{ "A.B.C.D.", "A.B.C.D.", true, false },
{ "x.y.z.w", "a.b.c.d", false, false },
{ "x.y.z.w.", "a.b.c.d.", false, false },
};
unsigned int i;
UNUSED(state);
for (i = 0; i < (sizeof(testcases) / sizeof(testcases[0])); i++) {
isc_result_t result;
dns_fixedname_t f1, f2;
dns_name_t *n1, *n2;
unsigned int h1, h2;
n1 = dns_fixedname_initname(&f1);
n2 = dns_fixedname_initname(&f2);
result = dns_name_fromstring2(n1, testcases[i].name1, NULL, 0,
NULL);
assert_int_equal(result, ISC_R_SUCCESS);
result = dns_name_fromstring2(n2, testcases[i].name2, NULL, 0,
NULL);
assert_int_equal(result, ISC_R_SUCCESS);
/* Check case-insensitive hashing first */
h1 = dns_name_hash(n1, false);
h2 = dns_name_hash(n2, false);
if (verbose) {
print_message("# %s hashes to %u, "
"%s to %u, case insensitive\n",
testcases[i].name1, h1,
testcases[i].name2, h2);
}
assert_int_equal((h1 == h2), testcases[i].expect);
/* Now case-sensitive */
h1 = dns_name_hash(n1, false);
h2 = dns_name_hash(n2, false);
if (verbose) {
print_message("# %s hashes to %u, "
"%s to %u, case sensitive\n",
testcases[i].name1, h1,
testcases[i].name2, h2);
}
assert_int_equal((h1 == h2), testcases[i].expect);
}
}
/* dns_nane_issubdomain */
ISC_RUN_TEST_IMPL(issubdomain) {
struct {
const char *name1;
const char *name2;
bool expect;
} testcases[] = {
{ "c.d", "a.b.c.d", false }, { "c.d.", "a.b.c.d.", false },
{ "b.c.d", "c.d", true }, { "a.b.c.d.", "c.d.", true },
{ "a.b.c", "a.b.c", true }, { "a.b.c.", "a.b.c.", true },
{ "x.y.z", "a.b.c", false }
};
unsigned int i;
UNUSED(state);
for (i = 0; i < (sizeof(testcases) / sizeof(testcases[0])); i++) {
isc_result_t result;
dns_fixedname_t f1, f2;
dns_name_t *n1, *n2;
n1 = dns_fixedname_initname(&f1);
n2 = dns_fixedname_initname(&f2);
result = dns_name_fromstring2(n1, testcases[i].name1, NULL, 0,
NULL);
assert_int_equal(result, ISC_R_SUCCESS);
result = dns_name_fromstring2(n2, testcases[i].name2, NULL, 0,
NULL);
assert_int_equal(result, ISC_R_SUCCESS);
if (verbose) {
print_message("# check: %s %s a subdomain of %s\n",
testcases[i].name1,
testcases[i].expect ? "is" : "is not",
testcases[i].name2);
}
assert_int_equal(dns_name_issubdomain(n1, n2),
testcases[i].expect);
}
}
/* dns_nane_countlabels */
ISC_RUN_TEST_IMPL(countlabels) {
struct {
const char *namestr;
unsigned int expect;
} testcases[] = {
{ "c.d", 2 }, { "c.d.", 3 }, { "a.b.c.d.", 5 },
{ "a.b.c.d", 4 }, { "a.b.c", 3 }, { ".", 1 },
};
unsigned int i;
UNUSED(state);
for (i = 0; i < (sizeof(testcases) / sizeof(testcases[0])); i++) {
isc_result_t result;
dns_fixedname_t fname;
dns_name_t *name;
name = dns_fixedname_initname(&fname);
result = dns_name_fromstring2(name, testcases[i].namestr, NULL,
0, NULL);
assert_int_equal(result, ISC_R_SUCCESS);
if (verbose) {
print_message("# %s: expect %u labels\n",
testcases[i].namestr,
testcases[i].expect);
}
assert_int_equal(dns_name_countlabels(name),
testcases[i].expect);
}
}
/* dns_nane_getlabel */
ISC_RUN_TEST_IMPL(getlabel) {
struct {
const char *name1;
unsigned int pos1;
const char *name2;
unsigned int pos2;
} testcases[] = {
{ "c.d", 1, "a.b.c.d", 3 },
{ "a.b.c.d", 3, "c.d", 1 },
{ "a.b.c.", 3, "A.B.C.", 3 },
};
unsigned int i;
UNUSED(state);
for (i = 0; i < (sizeof(testcases) / sizeof(testcases[0])); i++) {
isc_result_t result;
dns_fixedname_t f1, f2;
dns_name_t *n1, *n2;
dns_label_t l1, l2;
unsigned int j;
n1 = dns_fixedname_initname(&f1);
n2 = dns_fixedname_initname(&f2);
result = dns_name_fromstring2(n1, testcases[i].name1, NULL, 0,
NULL);
assert_int_equal(result, ISC_R_SUCCESS);
result = dns_name_fromstring2(n2, testcases[i].name2, NULL, 0,
NULL);
assert_int_equal(result, ISC_R_SUCCESS);
dns_name_getlabel(n1, testcases[i].pos1, &l1);
dns_name_getlabel(n2, testcases[i].pos2, &l2);
assert_int_equal(l1.length, l2.length);
for (j = 0; j < l1.length; j++) {
assert_int_equal(l1.base[j], l2.base[j]);
}
}
}
/* dns_nane_getlabelsequence */
ISC_RUN_TEST_IMPL(getlabelsequence) {
struct {
const char *name1;
unsigned int pos1;
const char *name2;
unsigned int pos2;
unsigned int range;
} testcases[] = {
{ "c.d", 1, "a.b.c.d", 3, 1 },
{ "a.b.c.d.e", 2, "c.d", 0, 2 },
{ "a.b.c", 0, "a.b.c", 0, 3 },
};
unsigned int i;
UNUSED(state);
for (i = 0; i < (sizeof(testcases) / sizeof(testcases[0])); i++) {
isc_result_t result;
dns_name_t t1, t2;
dns_fixedname_t f1, f2;
dns_name_t *n1, *n2;
/* target names */
dns_name_init(&t1, NULL);
dns_name_init(&t2, NULL);
/* source names */
n1 = dns_fixedname_initname(&f1);
n2 = dns_fixedname_initname(&f2);
result = dns_name_fromstring2(n1, testcases[i].name1, NULL, 0,
NULL);
assert_int_equal(result, ISC_R_SUCCESS);
result = dns_name_fromstring2(n2, testcases[i].name2, NULL, 0,
NULL);
assert_int_equal(result, ISC_R_SUCCESS);
dns_name_getlabelsequence(n1, testcases[i].pos1,
testcases[i].range, &t1);
dns_name_getlabelsequence(n2, testcases[i].pos2,
testcases[i].range, &t2);
assert_true(dns_name_equal(&t1, &t2));
}
}
#ifdef DNS_BENCHMARK_TESTS
/*
* XXXMUKS: Don't delete this code. It is useful in benchmarking the
* name parser, but we don't require it as part of the unit test runs.
*/
/* Benchmark dns_name_fromwire() implementation */
ISC_RUN_TEST_IMPL(fromwire_thread(void *arg) {
unsigned int maxval = 32000000;
uint8_t data[] = { 3, 'w', 'w', 'w', 7, 'e', 'x',
'a', 'm', 'p', 'l', 'e', 7, 'i',
'n', 'v', 'a', 'l', 'i', 'd', 0 };
unsigned char output_data[DNS_NAME_MAXWIRE];
isc_buffer_t source, target;
unsigned int i;
dns_decompress_t dctx;
UNUSED(arg);
dns_decompress_init(&dctx, -1, DNS_DECOMPRESS_STRICT);
dns_decompress_setmethods(&dctx, DNS_COMPRESS_NONE);
isc_buffer_init(&source, data, sizeof(data));
isc_buffer_add(&source, sizeof(data));
isc_buffer_init(&target, output_data, sizeof(output_data));
/* Parse 32 million names in each thread */
for (i = 0; i < maxval; i++) {
dns_name_t name;
isc_buffer_clear(&source);
isc_buffer_clear(&target);
isc_buffer_add(&source, sizeof(data));
isc_buffer_setactive(&source, sizeof(data));
dns_name_init(&name, NULL);
(void)dns_name_fromwire(&name, &source, &dctx, 0, &target);
}
return (NULL);
}
ISC_RUN_TEST_IMPL(benchmark) {
isc_result_t result;
unsigned int i;
isc_time_t ts1, ts2;
double t;
unsigned int nthreads;
isc_thread_t threads[32];
UNUSED(state);
debug_mem_record = false;
result = isc_time_now(&ts1);
assert_int_equal(result, ISC_R_SUCCESS);
nthreads = ISC_MIN(isc_os_ncpus(), 32);
nthreads = ISC_MAX(nthreads, 1);
for (i = 0; i < nthreads; i++) {
isc_thread_create(fromwire_thread, NULL, &threads[i]);
}
for (i = 0; i < nthreads; i++) {
isc_thread_join(threads[i], NULL);
}
result = isc_time_now(&ts2);
assert_int_equal(result, ISC_R_SUCCESS);
t = isc_time_microdiff(&ts2, &ts1);
printf("%u dns_name_fromwire() calls, %f seconds, %f calls/second\n",
nthreads * 32000000, t / 1000000.0,
(nthreads * 32000000) / (t / 1000000.0));
}
#endif /* DNS_BENCHMARK_TESTS */
ISC_TEST_LIST_START
ISC_TEST_ENTRY(fullcompare)
ISC_TEST_ENTRY(compression)
ISC_TEST_ENTRY(istat)
ISC_TEST_ENTRY(init)
ISC_TEST_ENTRY(invalidate)
ISC_TEST_ENTRY(buffer)
ISC_TEST_ENTRY(isabsolute)
ISC_TEST_ENTRY(hash)
ISC_TEST_ENTRY(issubdomain)
ISC_TEST_ENTRY(countlabels)
ISC_TEST_ENTRY(getlabel)
ISC_TEST_ENTRY(getlabelsequence)
#ifdef DNS_BENCHMARK_TESTS
ISC_TEST_ENTRY(benchmark)
#endif /* DNS_BENCHMARK_TESTS */
ISC_TEST_LIST_END
ISC_TEST_MAIN
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