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/*
* Tests for librpc ndr functions
*
* 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 "replace.h"
#include <setjmp.h>
#include <cmocka.h>
#include "librpc/ndr/libndr.h"
/*
* Test NDR_PULL_NEED_BYTES integer overflow handling.
*/
static enum ndr_err_code wrap_NDR_PULL_NEED_BYTES(
struct ndr_pull *ndr,
uint32_t bytes) {
NDR_PULL_NEED_BYTES(ndr, bytes);
return NDR_ERR_SUCCESS;
}
static void test_NDR_PULL_NEED_BYTES(void **state)
{
struct ndr_pull ndr = {0};
enum ndr_err_code err;
ndr.data_size = UINT32_MAX;
ndr.offset = UINT32_MAX -1;
/*
* This will not cause an overflow
*/
err = wrap_NDR_PULL_NEED_BYTES(&ndr, 1);
assert_int_equal(NDR_ERR_SUCCESS, err);
/*
* This will cause an overflow
* and (offset + n) will be less than data_size
*/
err = wrap_NDR_PULL_NEED_BYTES(&ndr, 2);
assert_int_equal(NDR_ERR_BUFSIZE, err);
}
/*
* Test NDR_PULL_ALIGN integer overflow handling.
*/
static enum ndr_err_code wrap_NDR_PULL_ALIGN(
struct ndr_pull *ndr,
uint32_t bytes) {
NDR_PULL_ALIGN(ndr, bytes);
return NDR_ERR_SUCCESS;
}
static void test_NDR_PULL_ALIGN(void **state)
{
struct ndr_pull ndr = {0};
enum ndr_err_code err;
ndr.data_size = UINT32_MAX;
ndr.offset = UINT32_MAX -1;
/*
* This will not cause an overflow
*/
err = wrap_NDR_PULL_ALIGN(&ndr, 2);
assert_int_equal(NDR_ERR_SUCCESS, err);
/*
* This will cause an overflow
* and (offset + n) will be less than data_size
*/
err = wrap_NDR_PULL_ALIGN(&ndr, 4);
assert_int_equal(NDR_ERR_BUFSIZE, err);
}
/*
* Test ndr_pull_advance integer overflow handling.
*/
static void test_ndr_pull_advance(void **state)
{
struct ndr_pull ndr = {0};
enum ndr_err_code err;
ndr.data_size = UINT32_MAX;
ndr.offset = UINT32_MAX -1;
/*
* This will not cause an overflow
*/
err = ndr_pull_advance(&ndr, 1);
assert_int_equal(NDR_ERR_SUCCESS, err);
/*
* This will cause an overflow
* and (offset + n) will be less than data_size
*/
err = ndr_pull_advance(&ndr, 2);
assert_int_equal(NDR_ERR_BUFSIZE, err);
}
int main(int argc, const char **argv)
{
const struct CMUnitTest tests[] = {
cmocka_unit_test(test_NDR_PULL_NEED_BYTES),
cmocka_unit_test(test_NDR_PULL_ALIGN),
cmocka_unit_test(test_ndr_pull_advance),
};
cmocka_set_message_output(CM_OUTPUT_SUBUNIT);
return cmocka_run_group_tests(tests, NULL, NULL);
}
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