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Add fuzz stuff ("backend/tests/fuzz"), including OSS-Fuzz

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gitlost 2024-01-04 20:11:04 +00:00
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commit 3cb724253b
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backend/tests/fuzz/fuzz_data.c Normal file
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/* fuzz_data.c - fuzzer for libzint (DATA_MODE, all symbologies except GS1_128, DBAR_EXP/STK & composites) */
/*
libzint - the open source barcode library
Copyright (C) 2024 Robin Stuart <rstuart114@gmail.com>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the project nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
/* SPDX-License-Identifier: BSD-3-Clause */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#if 0
#define Z_FUZZ_DEBUG /* Set `symbol->debug` flag */
#define Z_FUZZ_SET_OUTPUT_OPTIONS /* Set `symbol->output_options` */
#endif
#include "fuzz.h"
int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size) {
struct zint_symbol *symbol;
int idx;
/* Ignore empty or very large input */
if (size < 1 || size > 10000) {
return 0;
}
symbol = ZBarcode_Create();
assert(symbol);
for (idx = 0; idx < ZARRAY_SIZE(settings); idx++) {
const unsigned char *input;
int length;
int ret;
if (!ZBarcode_ValidID(idx)) {
continue;
}
if (idx == BARCODE_GS1_128 || idx == BARCODE_DBAR_EXP || idx == BARCODE_DBAR_EXPSTK
|| (ZBarcode_Cap(idx, ZINT_CAP_COMPOSITE) & ZINT_CAP_COMPOSITE)) {
continue;
}
input = data;
length = set_symbol(symbol, idx, 1 /*chk_sane*/, 0 /*no_eci*/, &input, size);
if (!length) {
continue;
}
ret = ZBarcode_Encode(symbol, input, length);
assert(ret != ZINT_ERROR_ENCODING_PROBLEM);
}
ZBarcode_Delete(symbol);
return 0;
}
#ifdef __cplusplus
}
#endif /* __cplusplus */
/* vim: set ts=4 sw=4 et : */