mirror of
https://git.code.sf.net/p/zint/code
synced 2026-05-04 05:05:30 +00:00
3c193d7306
allow for heights smaller than `textoffset` when have add-on (buffer overflow for raster, outside vector height for vector) raster: EAN/UPC: make sure don't overwrite add-on stuff when line-copying guard descenders by limiting copy width ZBarcode_Encode_Segs: allow for multiple (stacked) rows when setting absolute minimum height; state stacked symbols max in error message DBAR_EXP: check length on encoding method 6 before trying to parse 3-digit currency string with `z_to_int()` CLI: stop looping over data args when have error; suppress taint warning by using fixed `malloc()` size for `arg_opts` instead of `argc` general: use `vsnprintf()` instead of `vsprintf()` if not C89 ULTRACODE: don't call `ult_generate_codewords()` if `length` 0 from fragment processing (avoids `assert()`) clang-tidy -> 23 & suppress some warnings test suite: fuzz: leave Z_FUZZ_DEBUG to compiler, fix comment general: some minor code-formatting on touched files README.deb -> README.debian (avoid confusion with actual ".deb") BWIPP: update to latest
97 lines
3.3 KiB
C
97 lines
3.3 KiB
C
/* fuzz_data.c - fuzzer for libzint (DATA_MODE, all symbologies except GS1_128, DBAR_EXP/STK & composites) */
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/*
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libzint - the open source barcode library
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Copyright (C) 2024-2026 Robin Stuart <rstuart114@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the project nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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/* SPDX-License-Identifier: BSD-3-Clause */
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#include "fuzz.h"
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#ifdef Z_FUZZ_MAIN
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/* For testing that a corpus file reproduces a bug:
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cc -g -O0 -DZ_FUZZ_MAIN -DZ_FUZZ_DEBUG fuzz_data.c -o fuzz_data -lzint -fsanitize=address
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./fuzz_data <corpus-file>
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*/
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#include <errno.h>
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#include <limits.h>
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Z_FUZZ_MAIN_READ_ARGV_1(idx, buf)
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#else
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int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size) {
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struct zint_symbol *symbol;
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int idx;
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unsigned char *buf; /* Dummy, used by "fuzz_gs1.c" */
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#endif
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(void)buf;
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/* Ignore empty or very large input */
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if (size < 1 || size > 10000) {
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return 0;
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}
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symbol = ZBarcode_Create();
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assert(symbol);
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for (idx = 0; idx < ZARRAY_SIZE(settings); idx++) {
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const unsigned char *input;
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int length;
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int ret;
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if (!ZBarcode_ValidID(idx)) {
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continue;
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}
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if (idx == BARCODE_GS1_128 || idx == BARCODE_DBAR_EXP || idx == BARCODE_DBAR_EXPSTK
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|| (ZBarcode_Cap(idx, ZINT_CAP_COMPOSITE) & ZINT_CAP_COMPOSITE)) {
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continue;
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}
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input = data;
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length = set_symbol(symbol, idx, 1 /*chk_sane*/, 0 /*no_eci*/, &input, size);
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if (!length) {
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continue;
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}
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symbol->output_options |= BARCODE_MEMORY_FILE;
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ret = ZBarcode_Encode_and_Print(symbol, input, length, 0 /*rotate_angle*/);
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assert(ret != ZINT_ERROR_ENCODING_PROBLEM);
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}
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ZBarcode_Delete(symbol);
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return 0;
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}
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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/* vim: set ts=4 sw=4 et : */
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