mirror of
https://github.com/eledio-devices/thirdparty-miniz.git
synced 2025-10-30 16:15:41 +01:00
b485d01faf
adapt more fuzz targets from zlib, add zip fuzzer, zip dictionary. update uncompress_fuzzer to seed the buffer length separately.
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
/* Derived from zlib fuzzers at http://github.com/google/oss-fuzz/tree/master/projects/zlib,
|
|
* see ossfuzz.sh for full license text.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <inttypes.h>
|
|
|
|
#include "miniz.h"
|
|
|
|
#define CHECK_ERR(err, msg) { \
|
|
if (err != Z_OK) { \
|
|
fprintf(stderr, "%s error: %d\n", msg, err); \
|
|
exit(1); \
|
|
} \
|
|
}
|
|
|
|
static const uint8_t *data;
|
|
static size_t dataLen;
|
|
static alloc_func zalloc = NULL;
|
|
static free_func zfree = NULL;
|
|
|
|
|
|
void test_flush(unsigned char *compr, size_t *comprLen)
|
|
{
|
|
z_stream c_stream; /* compression stream */
|
|
int err;
|
|
unsigned int len = dataLen;
|
|
|
|
c_stream.zalloc = zalloc;
|
|
c_stream.zfree = zfree;
|
|
c_stream.opaque = NULL;
|
|
|
|
err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
|
|
CHECK_ERR(err, "deflateInit");
|
|
|
|
c_stream.next_in = (Bytef *)data;
|
|
c_stream.next_out = compr;
|
|
c_stream.avail_in = 3;
|
|
c_stream.avail_out = (unsigned int)*comprLen;
|
|
err = deflate(&c_stream, Z_FULL_FLUSH);
|
|
CHECK_ERR(err, "deflate flush 1");
|
|
|
|
compr[3]++; /* force an error in first compressed block */
|
|
c_stream.avail_in = len - 3;
|
|
|
|
err = deflate(&c_stream, Z_FINISH);
|
|
|
|
if (err != Z_STREAM_END)
|
|
{
|
|
CHECK_ERR(err, "deflate flush 2");
|
|
}
|
|
|
|
err = deflateEnd(&c_stream);
|
|
CHECK_ERR(err, "deflateEnd");
|
|
|
|
*comprLen = (size_t)c_stream.total_out;
|
|
}
|
|
|
|
int LLVMFuzzerTestOneInput(const uint8_t *d, size_t size)
|
|
{
|
|
size_t comprLen = 100 + 2 * compressBound(size);
|
|
size_t uncomprLen = size;
|
|
uint8_t *compr, *uncompr;
|
|
|
|
/* Discard inputs larger than 1Mb. */
|
|
static const size_t kMaxSize = 1024 * 1024;
|
|
|
|
/* This test requires at least 3 bytes of input data. */
|
|
if (size <= 3 || size > kMaxSize)
|
|
return 0;
|
|
|
|
data = d;
|
|
dataLen = size;
|
|
compr = calloc(1, comprLen);
|
|
uncompr = calloc(1, uncomprLen);
|
|
|
|
test_flush(compr, &comprLen);
|
|
|
|
free(compr);
|
|
free(uncompr);
|
|
|
|
return 0;
|
|
}
|