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/*
* Unit tests for ldap_message.
*
* Copyright (C) Catalyst.NET Ltd 2020
*
* 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 <http://www.gnu.org/licenses/>.
*
*/
/*
* from cmocka.c:
* These headers or their equivalents should be included prior to
* including
* this header file.
*
* #include <stdarg.h>
* #include <stddef.h>
* #include <setjmp.h>
*
* This allows test applications to use custom definitions of C standard
* library functions and types.
*
*/
#include <stdarg.h>
#include <stddef.h>
#include <setjmp.h>
#include <cmocka.h>
#include "lib/util/attr.h"
#include "includes.h"
#include "lib/util/asn1.h"
#include "libcli/ldap/ldap_message.h"
#include "libcli/ldap/ldap_proto.h"
/*
* declare the internal cmocka cm_print so we can output messages in
* sub unit format
*/
void cm_print_error(const char * const format, ...);
/*
* helper function and macro to compare an ldap error code constant with the
* coresponding nt_status code
*/
#define NT_STATUS_LDAP_V(code) (0xF2000000 | code)
static void _assert_ldap_status_equal(
int a,
NTSTATUS b,
const char * const file,
const int line)
{
_assert_int_equal(NT_STATUS_LDAP_V(a), NT_STATUS_V(b), file, line);
}
#define assert_ldap_status_equal(a, b) \
_assert_ldap_status_equal((a), (b), __FILE__, __LINE__)
/*
* helper function and macro to assert there were no errors in the last
* file operation
*/
static void _assert_not_ferror(
FILE *f,
const char * const file,
const int line)
{
if (f == NULL || ferror(f)) {
cm_print_error("ferror (%d) %s\n", errno, strerror(errno));
_fail(file, line);
}
}
#define assert_not_ferror(f) \
_assert_not_ferror((f), __FILE__, __LINE__)
struct test_ctx {
};
static int setup(void **state)
{
struct test_ctx *test_ctx;
test_ctx = talloc_zero(NULL, struct test_ctx);
*state = test_ctx;
return 0;
}
static int teardown(void **state)
{
struct test_ctx *test_ctx = talloc_get_type_abort(*state,
struct test_ctx);
TALLOC_FREE(test_ctx);
return 0;
}
/*
* Test that an empty request is handled correctly
*/
static void test_empty_input(void **state)
{
struct test_ctx *test_ctx = talloc_get_type_abort(
*state,
struct test_ctx);
struct asn1_data *asn1;
struct ldap_message *ldap_msg;
NTSTATUS status;
uint8_t *buf = NULL;
size_t len = 0;
struct ldap_request_limits limits = {
.max_search_size = 256000,
};
asn1 = asn1_init(test_ctx, ASN1_MAX_TREE_DEPTH);
assert_non_null(asn1);
asn1_load_nocopy(asn1, buf, len);
ldap_msg = talloc(test_ctx, struct ldap_message);
assert_non_null(ldap_msg);
status = ldap_decode(
asn1, &limits, samba_ldap_control_handlers(), ldap_msg);
assert_ldap_status_equal(LDAP_PROTOCOL_ERROR, status);
}
/*
* Check that a request is rejected it it's recursion depth exceeds
* the maximum value specified. This test uses a very deeply nested query,
* 10,000 or clauses.
*
*/
static void test_recursion_depth_large(void **state)
{
struct test_ctx *test_ctx = talloc_get_type_abort(
*state,
struct test_ctx);
struct asn1_data *asn1;
struct ldap_message *ldap_msg;
NTSTATUS status;
FILE *f = NULL;
uint8_t *buffer = NULL;
const size_t BUFF_SIZE = 1048576;
size_t len;
struct ldap_request_limits limits = {
.max_search_size = 256000,
};
/*
* Load a test data file containg 10,000 or clauses in encoded as
* an ASN.1 packet.
*/
buffer = talloc_zero_array(test_ctx, uint8_t, BUFF_SIZE);
f = fopen("./libcli/ldap/tests/data/10000-or.dat", "r");
assert_not_ferror(f);
len = fread(buffer, sizeof(uint8_t), BUFF_SIZE, f);
assert_not_ferror(f);
assert_true(len > 0);
asn1 = asn1_init(test_ctx, ASN1_MAX_TREE_DEPTH);
assert_non_null(asn1);
asn1_load_nocopy(asn1, buffer, len);
ldap_msg = talloc(test_ctx, struct ldap_message);
assert_non_null(ldap_msg);
status = ldap_decode(
asn1, &limits, samba_ldap_control_handlers(), ldap_msg);
assert_ldap_status_equal(LDAP_PROTOCOL_ERROR, status);
}
/*
* Check that a request is not rejected it it's recursion depth equals the
* maximum value
*/
static void test_recursion_depth_equals_max(void **state)
{
struct test_ctx *test_ctx = talloc_get_type_abort(
*state,
struct test_ctx);
struct asn1_data *asn1;
struct ldap_message *ldap_msg;
NTSTATUS status;
FILE *f = NULL;
uint8_t *buffer = NULL;
const size_t BUFF_SIZE = 1048576;
size_t len;
int ret;
struct ldap_request_limits limits = {
.max_search_size = 256000,
};
buffer = talloc_zero_array(test_ctx, uint8_t, BUFF_SIZE);
f = fopen("./libcli/ldap/tests/data/ldap-recursive.dat", "r");
assert_not_ferror(f);
len = fread(buffer, sizeof(uint8_t), BUFF_SIZE, f);
assert_not_ferror(f);
assert_true(len > 0);
asn1 = asn1_init(test_ctx, 4);
assert_non_null(asn1);
asn1_load_nocopy(asn1, buffer, len);
ldap_msg = talloc(test_ctx, struct ldap_message);
assert_non_null(ldap_msg);
status = ldap_decode(
asn1, &limits, samba_ldap_control_handlers(), ldap_msg);
assert_true(NT_STATUS_IS_OK(status));
ret = fclose(f);
f = NULL;
assert_true(ret == 0);
}
/*
* Check that a request is rejected it it's recursion depth is greater than the
* maximum value
*/
static void test_recursion_depth_greater_than_max(void **state)
{
struct test_ctx *test_ctx = talloc_get_type_abort(
*state,
struct test_ctx);
struct asn1_data *asn1;
struct ldap_message *ldap_msg;
NTSTATUS status;
FILE *f = NULL;
uint8_t *buffer = NULL;
const size_t BUFF_SIZE = 1048576;
size_t len;
int ret;
struct ldap_request_limits limits = {
.max_search_size = 256000,
};
buffer = talloc_zero_array(test_ctx, uint8_t, BUFF_SIZE);
f = fopen("./libcli/ldap/tests/data/ldap-recursive.dat", "r");
assert_not_ferror(f);
len = fread(buffer, sizeof(uint8_t), BUFF_SIZE, f);
assert_not_ferror(f);
assert_true(len > 0);
asn1 = asn1_init(test_ctx, 3);
assert_non_null(asn1);
asn1_load_nocopy(asn1, buffer, len);
ldap_msg = talloc(test_ctx, struct ldap_message);
assert_non_null(ldap_msg);
status = ldap_decode(
asn1, &limits, samba_ldap_control_handlers(), ldap_msg);
assert_ldap_status_equal(LDAP_PROTOCOL_ERROR, status);
ret = fclose(f);
f = NULL;
assert_true(ret == 0);
}
/*
* Check we can decode an exop response
*/
static void test_decode_exop_response(void **state)
{
struct test_ctx *test_ctx = talloc_get_type_abort(
*state,
struct test_ctx);
struct asn1_data *asn1;
struct ldap_message *ldap_msg;
NTSTATUS status;
FILE *f = NULL;
uint8_t *buffer = NULL;
const size_t BUFF_SIZE = 1048576;
size_t len;
int ret;
struct ldap_request_limits limits = {
.max_search_size = 256000,
};
buffer = talloc_zero_array(test_ctx, uint8_t, BUFF_SIZE);
f = fopen("./libcli/ldap/tests/data/ldap-starttls-response.dat", "r");
assert_not_ferror(f);
len = fread(buffer, sizeof(uint8_t), BUFF_SIZE, f);
assert_not_ferror(f);
assert_true(len > 0);
asn1 = asn1_init(test_ctx, 3);
assert_non_null(asn1);
asn1_load_nocopy(asn1, buffer, len);
ldap_msg = talloc(test_ctx, struct ldap_message);
assert_non_null(ldap_msg);
status = ldap_decode(
asn1, &limits, samba_ldap_control_handlers(), ldap_msg);
assert_true(NT_STATUS_IS_OK(status));
ret = fclose(f);
f = NULL;
assert_true(ret == 0);
}
int main(_UNUSED_ int argc, _UNUSED_ const char **argv)
{
const struct CMUnitTest tests[] = {
cmocka_unit_test_setup_teardown(
test_empty_input,
setup,
teardown),
cmocka_unit_test_setup_teardown(
test_recursion_depth_large,
setup,
teardown),
cmocka_unit_test_setup_teardown(
test_recursion_depth_equals_max,
setup,
teardown),
cmocka_unit_test_setup_teardown(
test_recursion_depth_greater_than_max,
setup,
teardown),
cmocka_unit_test_setup_teardown(
test_decode_exop_response,
setup,
teardown),
};
cmocka_set_message_output(CM_OUTPUT_SUBUNIT);
return cmocka_run_group_tests(tests, NULL, NULL);
}
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