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samba-mirror/source3/lib/test_adouble.c
Ralph Boehme eb08793402 CVE-2021-44142: libadouble: add basic cmocka tests
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14914

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-01-31 15:27:37 +00:00

390 lines
10 KiB
C

/*
* Unix SMB/CIFS implementation.
*
* Copyright (C) 2021 Ralph Boehme <slow@samba.org>
*
* 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/>.
*/
#include "adouble.c"
#include <cmocka.h>
static int setup_talloc_context(void **state)
{
TALLOC_CTX *frame = talloc_stackframe();
*state = frame;
return 0;
}
static int teardown_talloc_context(void **state)
{
TALLOC_CTX *frame = *state;
TALLOC_FREE(frame);
return 0;
}
/*
* Basic and sane buffer.
*/
static uint8_t ad_basic[] = {
0x00, 0x05, 0x16, 0x07, /* Magic */
0x00, 0x02, 0x00, 0x00, /* Version */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x02, /* Count */
/* adentry 1: FinderInfo */
0x00, 0x00, 0x00, 0x09, /* eid: FinderInfo */
0x00, 0x00, 0x00, 0x32, /* offset */
0x00, 0x00, 0x00, 0x20, /* length */
/* adentry 2: Resourcefork */
0x00, 0x00, 0x00, 0x02, /* eid: Resourcefork */
0x00, 0x00, 0x00, 0x52, /* offset */
0xff, 0xff, 0xff, 0x00, /* length */
/* FinderInfo data: 32 bytes */
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
};
/*
* An empty FinderInfo entry.
*/
static uint8_t ad_finderinfo1[] = {
0x00, 0x05, 0x16, 0x07, /* Magic */
0x00, 0x02, 0x00, 0x00, /* Version */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x02, /* Count */
/* adentry 1: FinderInfo */
0x00, 0x00, 0x00, 0x09, /* eid: FinderInfo */
0x00, 0x00, 0x00, 0x52, /* off: points at end of buffer */
0x00, 0x00, 0x00, 0x00, /* len: 0, so off+len don't exceed bufferlen */
/* adentry 2: Resourcefork */
0x00, 0x00, 0x00, 0x02, /* eid: Resourcefork */
0x00, 0x00, 0x00, 0x52, /* offset */
0xff, 0xff, 0xff, 0x00, /* length */
/* FinderInfo data: 32 bytes */
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
};
/*
* A dangerous FinderInfo with correct length exceeding buffer by one byte.
*/
static uint8_t ad_finderinfo2[] = {
0x00, 0x05, 0x16, 0x07, /* Magic */
0x00, 0x02, 0x00, 0x00, /* Version */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x02, /* Count */
/* adentry 1: FinderInfo */
0x00, 0x00, 0x00, 0x09, /* eid: FinderInfo */
0x00, 0x00, 0x00, 0x33, /* off: points at beginng of data + 1 */
0x00, 0x00, 0x00, 0x20, /* len: 32, so off+len exceeds bufferlen by 1 */
/* adentry 2: Resourcefork */
0x00, 0x00, 0x00, 0x02, /* eid: Resourcefork */
0x00, 0x00, 0x00, 0x52, /* offset */
0xff, 0xff, 0xff, 0x00, /* length */
/* FinderInfo data: 32 bytes */
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
};
static uint8_t ad_finderinfo3[] = {
0x00, 0x05, 0x16, 0x07, /* Magic */
0x00, 0x02, 0x00, 0x00, /* Version */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x02, /* Count */
/* adentry 1: FinderInfo */
0x00, 0x00, 0x00, 0x09, /* eid: FinderInfo */
0x00, 0x00, 0x00, 0x33, /* off: points at beginng of data + 1 */
0x00, 0x00, 0x00, 0x1f, /* len: 31, so off+len don't exceed buf */
/* adentry 2: Resourcefork */
0x00, 0x00, 0x00, 0x02, /* eid: Resourcefork */
0x00, 0x00, 0x00, 0x52, /* offset */
0xff, 0xff, 0xff, 0x00, /* length */
/* FinderInfo data: 32 bytes */
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
};
/*
* A dangerous name entry.
*/
static uint8_t ad_name[] = {
0x00, 0x05, 0x16, 0x07, /* Magic */
0x00, 0x02, 0x00, 0x00, /* Version */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x02, /* Count */
/* adentry 1: FinderInfo */
0x00, 0x00, 0x00, 0x09, /* eid: FinderInfo */
0x00, 0x00, 0x00, 0x32, /* offset */
0x00, 0x00, 0x00, 0x20, /* length */
/* adentry 2: Name */
0x00, 0x00, 0x00, 0x03, /* eid: Name */
0x00, 0x00, 0x00, 0x52, /* off: points at end of buffer */
0x00, 0x00, 0x00, 0x01, /* len: 1, so off+len exceeds bufferlen */
/* FinderInfo data: 32 bytes */
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
};
/*
* A empty ADEID_FILEDATESI entry.
*/
static uint8_t ad_date1[] = {
0x00, 0x05, 0x16, 0x07, /* Magic */
0x00, 0x02, 0x00, 0x00, /* Version */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x02, /* Count */
/* adentry 1: FinderInfo */
0x00, 0x00, 0x00, 0x09, /* eid: FinderInfo */
0x00, 0x00, 0x00, 0x32, /* offset */
0x00, 0x00, 0x00, 0x20, /* length */
/* adentry 2: Dates */
0x00, 0x00, 0x00, 0x08, /* eid: dates */
0x00, 0x00, 0x00, 0x52, /* off: end of buffer */
0x00, 0x00, 0x00, 0x00, /* len: 0, empty entry, valid */
/* FinderInfo data: 32 bytes */
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
};
/*
* A dangerous ADEID_FILEDATESI entry, invalid length.
*/
static uint8_t ad_date2[] = {
0x00, 0x05, 0x16, 0x07, /* Magic */
0x00, 0x02, 0x00, 0x00, /* Version */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x00, 0x00, 0x00, /* Filler */
0x00, 0x02, /* Count */
/* adentry 1: FinderInfo */
0x00, 0x00, 0x00, 0x09, /* eid: FinderInfo */
0x00, 0x00, 0x00, 0x32, /* offset */
0x00, 0x00, 0x00, 0x20, /* length */
/* adentry 2: Dates */
0x00, 0x00, 0x00, 0x08, /* eid: dates */
0x00, 0x00, 0x00, 0x43, /* off: FinderInfo buf but one byte short */
0x00, 0x00, 0x00, 0x0f, /* len: 15, so off+len don't exceed bufferlen */
/* FinderInfo data: 32 bytes */
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
};
static struct adouble *parse_adouble(TALLOC_CTX *mem_ctx,
uint8_t *adbuf,
size_t adsize,
off_t filesize)
{
struct adouble *ad = NULL;
bool ok;
ad = talloc_zero(mem_ctx, struct adouble);
ad->ad_data = talloc_zero_size(ad, adsize);
assert_non_null(ad);
memcpy(ad->ad_data, adbuf, adsize);
ok = ad_unpack(ad, 2, filesize);
if (!ok) {
return NULL;
}
return ad;
}
static void parse_abouble_basic(void **state)
{
TALLOC_CTX *frame = *state;
struct adouble *ad = NULL;
char *p = NULL;
ad = parse_adouble(frame, ad_basic, sizeof(ad_basic), 0xffffff52);
assert_non_null(ad);
p = ad_get_entry(ad, ADEID_FINDERI);
assert_non_null(p);
return;
}
static void parse_abouble_finderinfo1(void **state)
{
TALLOC_CTX *frame = *state;
struct adouble *ad = NULL;
char *p = NULL;
ad = parse_adouble(frame,
ad_finderinfo1,
sizeof(ad_finderinfo1),
0xffffff52);
assert_non_null(ad);
p = ad_get_entry(ad, ADEID_FINDERI);
assert_null(p);
return;
}
static void parse_abouble_finderinfo2(void **state)
{
TALLOC_CTX *frame = *state;
struct adouble *ad = NULL;
ad = parse_adouble(frame,
ad_finderinfo2,
sizeof(ad_finderinfo2),
0xffffff52);
assert_null(ad);
return;
}
static void parse_abouble_finderinfo3(void **state)
{
TALLOC_CTX *frame = *state;
struct adouble *ad = NULL;
ad = parse_adouble(frame,
ad_finderinfo3,
sizeof(ad_finderinfo3),
0xffffff52);
assert_null(ad);
return;
}
static void parse_abouble_name(void **state)
{
TALLOC_CTX *frame = *state;
struct adouble *ad = NULL;
ad = parse_adouble(frame, ad_name, sizeof(ad_name), 0x52);
assert_null(ad);
return;
}
static void parse_abouble_date1(void **state)
{
TALLOC_CTX *frame = *state;
struct adouble *ad = NULL;
char *p = NULL;
ad = parse_adouble(frame, ad_date1, sizeof(ad_date1), 0x52);
assert_non_null(ad);
p = ad_get_entry(ad, ADEID_FILEDATESI);
assert_null(p);
return;
}
static void parse_abouble_date2(void **state)
{
TALLOC_CTX *frame = *state;
struct adouble *ad = NULL;
ad = parse_adouble(frame, ad_date2, sizeof(ad_date2), 0x52);
assert_null(ad);
return;
}
int main(int argc, char *argv[])
{
int rc;
const struct CMUnitTest tests[] = {
cmocka_unit_test(parse_abouble_basic),
cmocka_unit_test(parse_abouble_finderinfo1),
cmocka_unit_test(parse_abouble_finderinfo2),
cmocka_unit_test(parse_abouble_finderinfo3),
cmocka_unit_test(parse_abouble_name),
cmocka_unit_test(parse_abouble_date1),
cmocka_unit_test(parse_abouble_date2),
};
if (argc == 2) {
cmocka_set_test_filter(argv[1]);
}
cmocka_set_message_output(CM_OUTPUT_SUBUNIT);
rc = cmocka_run_group_tests(tests,
setup_talloc_context,
teardown_talloc_context);
return rc;
}