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fuzz: add fuzzer for ldb_comparison_fold

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Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Douglas Bagnall 2021-03-06 12:40:17 +13:00 committed by Andrew Bartlett
parent 019bee54c6
commit 17e35c2691
2 changed files with 63 additions and 0 deletions
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58
lib/fuzzing/fuzz_ldb_comparison_fold.c Normal file
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@ -0,0 +1,58 @@
/*
Fuzzing ldb_comparison_fold()
Copyright (C) Catalyst IT 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/>.
*/
#include "includes.h"
#include "fuzzing/fuzzing.h"
#include "lib/ldb/include/ldb.h"
#include "lib/ldb/include/ldb_handlers.h"
int LLVMFuzzerInitialize(int *argc, char ***argv)
{
return 0;
}
int LLVMFuzzerTestOneInput(const uint8_t *input, size_t len)
{
struct ldb_val v1, v2;
struct ldb_context *ldb = NULL;
if (len < 2) {
return 0;
}
v1.length = PULL_LE_U16(input, 0);
if (v1.length > len - 2) {
/* the exact case of v2.length == 0 is still available */
return 0;
}
len -= 2;
input += 2;
ldb = ldb_init(NULL, NULL);
if (ldb == NULL) {
return 0;
}
v1.data = talloc_memdup(ldb, input, v1.length);
v2.length = len - v1.length;
v2.data = talloc_memdup(ldb, input + v1.length, v2.length);
ldb_comparison_fold(ldb, ldb, &v1, &v2);
talloc_free(ldb);
return 0;
}

5
lib/fuzzing/wscript_build
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@ -123,6 +123,11 @@ bld.SAMBA_BINARY('fuzz_ldb_parse_tree',
deps='fuzzing ldb afl-fuzz-main',
fuzzer=True)
bld.SAMBA_BINARY('fuzz_ldb_comparison_fold',
source='fuzz_ldb_comparison_fold.c',
deps='fuzzing ldb afl-fuzz-main',
fuzzer=True)
bld.SAMBA_BINARY('fuzz_dcerpc_parse_binding',
source='fuzz_dcerpc_parse_binding.c',
deps='fuzzing dcerpc afl-fuzz-main',