| /* |
| * Copyright (C)2021 D. R. Commander. All Rights Reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * - 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. |
| * - Neither the name of the libjpeg-turbo 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 HOLDERS 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. |
| */ |
| |
| #include <turbojpeg.h> |
| #include <stdlib.h> |
| #include <stdint.h> |
| |
| |
| #define NUMPF 4 |
| |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) |
| { |
| tjhandle handle = NULL; |
| unsigned char *dstBuf = NULL; |
| int width = 0, height = 0, jpegSubsamp, jpegColorspace, pfi; |
| /* TJPF_RGB-TJPF_BGR share the same code paths, as do TJPF_RGBX-TJPF_XRGB and |
| TJPF_RGBA-TJPF_ARGB. Thus, the pixel formats below should be the minimum |
| necessary to achieve full coverage. */ |
| enum TJPF pixelFormats[NUMPF] = |
| { TJPF_RGB, TJPF_BGRX, TJPF_GRAY, TJPF_CMYK }; |
| |
| #if defined(__has_feature) && __has_feature(memory_sanitizer) |
| /* The libjpeg-turbo SIMD extensions produce false positives with |
| MemorySanitizer. */ |
| putenv("JSIMD_FORCENONE=1"); |
| #endif |
| |
| if ((handle = tjInitDecompress()) == NULL) |
| goto bailout; |
| |
| /* We ignore the return value of tjDecompressHeader3(), because some JPEG |
| images may have unusual subsampling configurations that the TurboJPEG API |
| cannot identify but can still decompress. */ |
| tjDecompressHeader3(handle, data, size, &width, &height, &jpegSubsamp, |
| &jpegColorspace); |
| |
| /* Ignore 0-pixel images and images larger than 1 Megapixel, as Google's |
| OSS-Fuzz target for libjpeg-turbo did. Casting width to (uint64_t) |
| prevents integer overflow if width * height > INT_MAX. */ |
| if (width < 1 || height < 1 || (uint64_t)width * height > 1048576) |
| goto bailout; |
| |
| for (pfi = 0; pfi < NUMPF; pfi++) { |
| int pf = pixelFormats[pfi], flags = 0, i, sum = 0, w = width, h = height; |
| |
| /* Test non-default decompression options on the first iteration. */ |
| if (pf == TJPF_RGB) |
| flags = TJFLAG_BOTTOMUP | TJFLAG_FASTUPSAMPLE | TJFLAG_FASTDCT; |
| /* Test IDCT scaling on the second iteration. */ |
| if (pf == TJPF_BGRX) { |
| w = (width + 1) / 2; |
| h = (height + 1) / 2; |
| } |
| |
| if ((dstBuf = (unsigned char *)malloc(w * h * tjPixelSize[pf])) == NULL) |
| goto bailout; |
| |
| if (tjDecompress2(handle, data, size, dstBuf, w, 0, h, pf, flags) == 0) { |
| /* Touch all of the output pixels in order to catch uninitialized reads |
| when using MemorySanitizer. */ |
| for (i = 0; i < w * h * tjPixelSize[pf]; i++) |
| sum += dstBuf[i]; |
| } |
| |
| free(dstBuf); |
| dstBuf = NULL; |
| |
| /* Prevent the code above from being optimized out. This test should never |
| be true, but the compiler doesn't know that. */ |
| if (sum > 255 * 1048576 * tjPixelSize[pf]) |
| goto bailout; |
| } |
| |
| bailout: |
| free(dstBuf); |
| if (handle) tjDestroy(handle); |
| return 0; |
| } |