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/*
Fuzzing for ldap_decode.
Copyright (C) Michael Hanselmann 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/>.
*/
#include "includes.h"
#include "fuzzing/fuzzing.h"
#include "lib/util/asn1.h"
#include "libcli/ldap/ldap_message.h"
#include "libcli/ldap/ldap_proto.h"
int LLVMFuzzerInitialize(int *argc, char ***argv)
{
return 0;
}
int LLVMFuzzerTestOneInput(uint8_t *buf, size_t len)
{
TALLOC_CTX *mem_ctx = talloc_init(__FUNCTION__);
struct asn1_data *asn1;
struct ldap_message *ldap_msg;
struct ldap_request_limits limits = {
/*
* The default size is currently 256000 bytes
*/
.max_search_size = 256000
};
NTSTATUS status;
/*
* Need to limit the max parse tree depth to 250 to prevent
* ASAN detecting stack overflows.
*/
asn1 = asn1_init(mem_ctx, 250);
if (!asn1) {
goto out;
}
asn1_load_nocopy(asn1, buf, len);
ldap_msg = talloc(mem_ctx, struct ldap_message);
if (!ldap_msg) {
goto out;
}
status = ldap_decode(
asn1, &limits, samba_ldap_control_handlers(), ldap_msg);
out:
talloc_free(mem_ctx);
return 0;
}
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