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/*
* Tests for librpc ndr_string.c
*
* Copyright (C) Catalyst.NET Ltd 2019
*
* 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/ndr_string.c"
/*
* Try and pull a null terminated string from a zero length buffer
* Should fail for both 1 byte, and 2 byte character strings.
*/
static void test_pull_string_zero_len_nul_term(void **state)
{
struct ndr_pull ndr = {0};
enum ndr_err_code err;
int flags = NDR_SCALARS;
uint8_t data[] = {0x0, 0x0};
const char *s = NULL;
ndr.flags = LIBNDR_FLAG_STR_UTF8 | LIBNDR_FLAG_STR_NULLTERM;
ndr.data = data;
ndr.data_size = 0;
err = ndr_pull_string(&ndr, flags, &s);
assert_int_equal(err, NDR_ERR_BUFSIZE);
assert_null(s);
assert_int_equal(0, ndr.offset);
ndr.flags = LIBNDR_FLAG_STR_NULLTERM;
ndr.offset = 0;
err = ndr_pull_string(&ndr, flags, &s);
assert_int_equal(err, NDR_ERR_BUFSIZE);
assert_null(s);
assert_int_equal(0, ndr.offset);
}
/*
* Try and pull a null terminated string from a 1 byte buffer
* Should succeed for 1 byte character and
* fail for 2 byte character strings.
*/
static void test_pull_string_len_1_nul_term(void **state)
{
struct ndr_pull ndr = {0};
enum ndr_err_code err;
int flags = NDR_SCALARS;
const char *s = NULL;
uint8_t data[] = {0x0, 0x0};
ndr.flags = LIBNDR_FLAG_STR_UTF8 | LIBNDR_FLAG_STR_NULLTERM;
ndr.data = data;
ndr.data_size = 1;
err = ndr_pull_string(&ndr, flags, &s);
assert_int_equal(err, NDR_ERR_SUCCESS);
assert_non_null(s);
assert_int_equal(1, ndr.offset);
ndr.offset = 0;
ndr.flags = LIBNDR_FLAG_STR_NULLTERM;
err = ndr_pull_string(&ndr, flags, &s);
assert_int_equal(err, NDR_ERR_BUFSIZE);
assert_int_equal(0, ndr.offset);
}
/*
* Try and pull a null terminated string from a 2 byte buffer
* Should succeed for both 1 byte, and 2 byte character strings.
*/
static void test_pull_string_len_2_nul_term(void **state)
{
struct ndr_pull ndr = {0};
enum ndr_err_code err;
int flags = NDR_SCALARS;
const char *s;
uint8_t data[] = {0x0, 0x0};
ndr.flags = LIBNDR_FLAG_STR_UTF8 | LIBNDR_FLAG_STR_NULLTERM;
ndr.data = data;
ndr.data_size = 2;
err = ndr_pull_string(&ndr, flags, &s);
assert_int_equal(err, NDR_ERR_SUCCESS);
assert_non_null(s);
assert_int_equal(1, ndr.offset);
ndr.offset = 0;
ndr.flags = LIBNDR_FLAG_STR_NULLTERM;
err = ndr_pull_string(&ndr, flags, &s);
assert_int_equal(err, NDR_ERR_SUCCESS);
assert_non_null(s);
assert_int_equal(2, ndr.offset);
}
static void test_ndr_string_n_length(void **state)
{
char test_str1[5] = "Test";
char test_str2[5] = {0};
char test_str3[32] = "This is a test too";
uint8_t test_str_u16[64] = {
0x5C, 0x00, 0x5C, 0x00, 0x4C, 0x00, 0x6F, 0x00,
0x67, 0x00, 0x6F, 0x00, 0x6E, 0x00, 0x2D, 0x00,
0x6D, 0x00, 0x75, 0x00, 0x63, 0x00, 0x5C, 0x00,
0x6B, 0x00, 0x79, 0x00, 0x6F, 0x00, 0x63, 0x00,
0x65, 0x00, 0x72, 0x00, 0x61, 0x00, 0x2D, 0x00,
0x6D, 0x00, 0x75, 0x00, 0x63, 0x00, 0x2D, 0x00,
0x6E, 0x00, 0x00, 0x00 };
size_t len;
len = ndr_string_n_length(test_str1, sizeof(test_str1), 1);
assert_int_equal(len, 5);
len = ndr_string_n_length(test_str1, sizeof(test_str1) - 1, 1);
assert_int_equal(len, 4);
len = ndr_string_n_length(test_str2, sizeof(test_str2), 1);
assert_int_equal(len, 1);
len = ndr_string_n_length(test_str3, sizeof(test_str3), 1);
assert_int_equal(len, 19);
len = ndr_string_n_length(test_str3, 0, 1);
assert_int_equal(len, 0);
len = ndr_string_n_length(test_str_u16, 32, 2);
assert_int_equal(len, 26);
}
static void test_pull_string_array(void **state)
{
/* We try pulling long string arrays without long strings */
const char **r = NULL;
struct ndr_pull ndr = {0};
enum ndr_err_code err;
TALLOC_CTX *mem_ctx = talloc_new(NULL);
size_t len = 1 * 1024 * 1024;
uint8_t *data = talloc_array(mem_ctx, uint8_t, len);
size_t i;
for (i = 0; i < len; i++) {
data[i] = (i & 1) ? '\0' : 'X';
}
ndr.current_mem_ctx = mem_ctx;
ndr.flags = (LIBNDR_FLAG_REF_ALLOC |
LIBNDR_FLAG_REMAINING |
LIBNDR_FLAG_STR_NULLTERM |
LIBNDR_FLAG_STR_RAW8);
ndr.data = data;
ndr.data_size = len;
err = ndr_pull_string_array(&ndr, NDR_SCALARS, &r);
assert_int_equal(err, NDR_ERR_SUCCESS);
assert_string_equal(r[0], "X");
assert_string_equal(r[len / 3], "X");
assert_string_equal(r[len / 2 - 1], "X");
assert_ptr_equal(r[len / 2], NULL);
TALLOC_FREE(mem_ctx);
}
int main(int argc, const char **argv)
{
const struct CMUnitTest tests[] = {
cmocka_unit_test(test_pull_string_zero_len_nul_term),
cmocka_unit_test(test_pull_string_len_1_nul_term),
cmocka_unit_test(test_pull_string_len_2_nul_term),
cmocka_unit_test(test_ndr_string_n_length),
cmocka_unit_test(test_pull_string_array)
};
cmocka_set_message_output(CM_OUTPUT_SUBUNIT);
return cmocka_run_group_tests(tests, NULL, NULL);
}
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