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/*
Fuzzing for lzxpress_decompress
Copyright (C) Michael Hanselmann 2019
Copyright (C) Douglas Bagnall 2022 <dbagnall@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 "includes.h"
#include "fuzzing/fuzzing.h"
#include "compression/lzxpress_huffman.h"
int LLVMFuzzerInitialize(int *argc, char ***argv)
{
return 0;
}
static uint8_t output[1024 * 1024] = {0};
int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len)
{
size_t target_len;
if (len < 4) {
return 0;
}
/*
* An exact target length is required, which we store in the first 24
* bits.
*/
target_len = MIN(sizeof(output), buf[0] | (buf[1] << 8) | (buf[2] << 16));
buf += 3;
len -= 3;
lzxpress_huffman_decompress(buf, len, output, target_len);
return 0;
}
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