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3cb724253b
"Dockerfile" etc PDF417: lessen some debug verbosity gif: use "gif_" prefix; some code fiddling
124 lines
4.6 KiB
C
124 lines
4.6 KiB
C
/* fuzz_gs1.c - fuzzer for libzint (GS1-enabled symbologies, GS1_MODE) */
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/*
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libzint - the open source barcode library
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Copyright (C) 2024 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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#if 0
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#define Z_FUZZ_DEBUG /* Set `symbol->debug` flag */
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#define Z_FUZZ_SET_OUTPUT_OPTIONS /* Set `symbol->output_options` */
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#endif
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#include "fuzz.h"
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int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size) {
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static const int symbologies[] = {
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BARCODE_AZTEC, BARCODE_CODE16K, BARCODE_CODE49, BARCODE_CODEONE, BARCODE_DATAMATRIX, BARCODE_DBAR_EXP,
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BARCODE_DBAR_EXPSTK, BARCODE_DOTCODE, BARCODE_GS1_128, BARCODE_QRCODE, BARCODE_RMQR, BARCODE_ULTRA,
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BARCODE_EANX_CC, BARCODE_GS1_128_CC, BARCODE_DBAR_OMN_CC, BARCODE_DBAR_LTD_CC, BARCODE_DBAR_EXP_CC,
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BARCODE_UPCA_CC, BARCODE_UPCE_CC, BARCODE_DBAR_STK_CC, BARCODE_DBAR_OMNSTK_CC, BARCODE_DBAR_EXPSTK_CC,
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};
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struct zint_symbol *symbol;
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unsigned char *gs1_buf;
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int i;
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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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gs1_buf = (unsigned char *) malloc(size + 2);
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assert(gs1_buf);
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gs1_buf[0] = '['; /* Add dummy AI - along with GS1NOCHECK_MODE disables GS1 verification */
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gs1_buf[1] = ']';
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for (i = 0; i < ZARRAY_SIZE(symbologies); i++) {
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static const char primary_ai[] = "[01]12345678901231";
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static const char primary_upce[] = "12345670";
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static const char primary[] = "123456789012";
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const int idx = symbologies[i];
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const int is_composite = ZBarcode_Cap(idx, ZINT_CAP_COMPOSITE) & ZINT_CAP_COMPOSITE;
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const unsigned char *input;
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int length;
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int ret;
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assert(ZBarcode_ValidID(idx));
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input = data;
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length = set_symbol(symbol, idx, !is_composite /*chk_sane*/, 1 /*no_eci*/, &input, size);
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if (!length) {
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continue;
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}
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if (is_composite) {
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if (idx == BARCODE_GS1_128_CC || idx == BARCODE_DBAR_EXP_CC || idx == BARCODE_DBAR_EXPSTK_CC) {
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strcpy(symbol->primary, primary_ai);
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} else if (idx == BARCODE_UPCE_CC) {
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strcpy(symbol->primary, primary_upce);
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} else {
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strcpy(symbol->primary, primary);
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}
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}
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/* Try it first without GS1NOCHECK_MODE */
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symbol->input_mode = (symbol->input_mode & ~0x07) | GS1_MODE;
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ret = ZBarcode_Encode(symbol, input, length);
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assert(ret != ZINT_ERROR_ENCODING_PROBLEM);
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ZBarcode_Clear(symbol);
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/* Now with GS1NOCHECK_MODE */
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symbol->input_mode = (symbol->input_mode & ~0x07) | GS1_MODE | GS1NOCHECK_MODE;
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symbol->input_mode &= ~GS1PARENS_MODE;
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memcpy(gs1_buf + 2, input, length);
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ret = ZBarcode_Encode(symbol, gs1_buf, length + 2);
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assert(ret != ZINT_ERROR_ENCODING_PROBLEM);
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}
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(void) free(gs1_buf);
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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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