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/*
Fuzz NMB parse_packet
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 "../../source3/include/includes.h"
#include "libsmb/libsmb.h"
#include "libsmb/nmblib.h"
#include "fuzzing/fuzzing.h"
#define PORT 138
#define MAX_LENGTH (1024 * 1024)
char buf[MAX_LENGTH + 1];
int LLVMFuzzerTestOneInput(uint8_t *input, size_t len)
{
struct packet_struct *p = NULL;
struct in_addr ip = {
0x0100007f /* 127.0.0.1 */
};
p = parse_packet((char *)input,
len,
NMB_PACKET,
ip,
PORT);
/*
* We expect NULL (parse failure) most of the time.
*
* When it is not NULL we want to ensure the parsed packet is
* reasonably sound.
*/
if (p != NULL) {
struct nmb_packet *nmb = &p->packet.nmb;
pull_ascii_nstring(buf, MAX_LENGTH,
nmb->question.question_name.name);
build_packet(buf, MAX_LENGTH, p);
free_packet(p);
}
return 0;
}
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