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#181 OSS-Fuzz TELEPEN fix, allow for 16 char nul encodings in buffer

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gitlost 2020-03-26 14:22:27 +00:00
parent 62995f18d2
commit 027e8a775d
4 changed files with 90 additions and 4 deletions
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4
backend/telepen.c
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@ -60,7 +60,7 @@ static char *TeleTable[] = {
INTERNAL int telepen(struct zint_symbol *symbol, unsigned char source[], const size_t src_len) {
unsigned int i, count, check_digit;
int error_number;
char dest[512]; /*14 + 30 * 14 + 14 + 14 + 1 ~ 512 */
char dest[521]; /* 12 (start) + 30 * 16 (max for nuls) + 16 (check digit) + 12 (stop) + 1 = 521 */
error_number = 0;
@ -108,7 +108,7 @@ INTERNAL int telepen_num(struct zint_symbol *symbol, unsigned char source[], con
unsigned int count, check_digit, glyph;
int error_number;
size_t i,temp_length = src_len;
char dest[1024]; /* 14 + 60 * 14 + 14 + 14 + 1 ~ 1024 */
char dest[521]; /* 12 (start) + 30 * 16 (max for nuls) + 16 (check digit) + 12 (stop) + 1 = 521 */
unsigned char temp[64];
count = 0;

1
backend/tests/CMakeLists.txt
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@ -73,5 +73,6 @@ zint_add_test(qr, test_qr)
zint_add_test(raster, test_raster)
zint_add_test(rss, test_rss)
zint_add_test(sjis, test_sjis)
zint_add_test(telepen, test_telepen)
zint_add_test(upcean, test_upcean)
zint_add_test(vector, test_vector)

4
backend/tests/test_auspost.c
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@ -32,7 +32,7 @@
#include "testcommon.h"
// #181 Christian Hartlage OSS-Fuzz
static void test_australia_post_fuzz(void)
static void test_fuzz(void)
{
testStart("");
@ -76,7 +76,7 @@ static void test_australia_post_fuzz(void)
int main()
{
test_australia_post_fuzz();
test_fuzz();
testReport();

85
backend/tests/test_telepen.c Normal file
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@ -0,0 +1,85 @@
/*
libzint - the open source barcode library
Copyright (C) 2008-2020 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.
*/
/* vim: set ts=4 sw=4 et : */
#include "testcommon.h"
// #181 Nico Gunkel OSS-Fuzz
static void test_fuzz(void)
{
testStart("");
int ret;
struct item {
int symbology;
unsigned char* data;
int length;
int ret;
};
// s/\/\*[ 0-9]*\*\//\=printf("\/*%2d*\/", line(".") - line("'<"))
struct item data[] = {
/* 0*/ { BARCODE_TELEPEN, "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 30, 0 },
/* 1*/ { BARCODE_TELEPEN, "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 31, ZINT_ERROR_TOO_LONG },
/* 2*/ { BARCODE_TELEPEN_NUM, "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 60, ZINT_ERROR_INVALID_DATA },
/* 3*/ { BARCODE_TELEPEN_NUM, "040404040404040404040404040404040404040404040404040404040404", 60, 0 },
/* 4*/ { BARCODE_TELEPEN_NUM, "1234567890123456789012345678901234567890123456789012345678901", 61, ZINT_ERROR_TOO_LONG },
/* 5*/ { BARCODE_TELEPEN_NUM, "00000000000000000000000000000000000000000000000000000000000X", 60, 0 },
/* 6*/ { BARCODE_TELEPEN_NUM, "999999999999999999999999999999999999999999999999999999999999", 60, 0 },
};
int data_size = sizeof(data) / sizeof(struct item);
for (int i = 0; i < data_size; i++) {
struct zint_symbol* symbol = ZBarcode_Create();
assert_nonnull(symbol, "Symbol not created\n");
symbol->symbology = data[i].symbology;
int length = data[i].length;
if (length == -1) {
length = strlen(data[i].data);
}
ret = ZBarcode_Encode(symbol, data[i].data, length);
assert_equal(ret, data[i].ret, "i:%d ZBarcode_Encode ret %d != %d (%s)\n", i, ret, data[i].ret, symbol->errtxt);
ZBarcode_Delete(symbol);
}
testFinish();
}
int main()
{
test_fuzz();
testReport();
return 0;
}