kc3-lang/libjpeg-turbo/fuzz/compress16_lossless.cc

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• Hash : f74989d8
  Author :
  Date : 2025-09-25T11:32:45
  

  Clean up #include directives
  
  This is subtle, but #include <header.h> searches directories specified
  with -I, then system include directories.  #include "header.h" searches
  the current source directory, then directories specified with -I, then
  system include directories.
  
  Using bracketed #include directives for jpeglib.h, jinclude.h, jerror.h,
  cdjpeg.h, and turbojpeg.h only worked because the build system
  explicitly passed -I{source_directory}/src/ to the compiler.  Referring
  to 51cee0362998ec6f1eabac1e795f3b6e3ee639ea, it's better for the source
  code to have as few dependencies on our specific build system as
  possible.
  
  Since jpeglib.h, jinclude.h, jerror.h, and turbojpeg.h can be installed
  in system include directories, it's also better for internal references
  to those headers to resolve internally first, to avoid potential
  conflicts between the system-installed version of libjpeg-turbo and the
  version being built.  (Such conflicts would never have occurred with our
  build system, but they might have occurred due to misintegration with a
  downstream build system.)
  

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• fuzz/compress16_lossless.cc

• /*
   * Copyright (C)2021-2025 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 "../src/turbojpeg.h"
  #include <stdio.h>
  #include <stdlib.h>
  #include <stdint.h>
  #include <string.h>
  #include <unistd.h>
  
  
  #define NUMTESTS  7
  
  
  struct test {
    enum TJPF pf;
    int precision, psv, pt;
  };
  
  
  extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
  {
    tjhandle handle = NULL;
    unsigned short *srcBuf = NULL;
    unsigned char *dstBuf = NULL;
    int width = 0, height = 0, fd = -1, ti;
    char filename[FILENAME_MAX] = { 0 };
    struct test tests[NUMTESTS] = {
      { TJPF_RGB, 16, 1, 0 },
      { TJPF_BGR, 15, 2, 2 },
      { TJPF_RGBX, 14, 3, 4 },
      { TJPF_BGRA, 13, 4, 7 },
      { TJPF_XRGB, 16, 5, 5 },
      { TJPF_GRAY, 16, 6, 3 },
      { TJPF_CMYK, 16, 7, 0 }
    };
  
    snprintf(filename, FILENAME_MAX, "/tmp/libjpeg-turbo_compress_fuzz.XXXXXX");
    if ((fd = mkstemp(filename)) < 0 || write(fd, data, size) < 0)
      goto bailout;
  
    if ((handle = tj3Init(TJINIT_COMPRESS)) == NULL)
      goto bailout;
  
    for (ti = 0; ti < NUMTESTS; ti++) {
      int pf = tests[ti].pf;
      size_t dstSize = 0, maxBufSize, i, sum = 0;
  
      /* Test non-default compression options on specific iterations. */
      tj3Set(handle, TJPARAM_BOTTOMUP, ti == 0);
      tj3Set(handle, TJPARAM_NOREALLOC, ti != 2);
      tj3Set(handle, TJPARAM_PRECISION, tests[ti].precision);
      tj3Set(handle, TJPARAM_RESTARTROWS, ti == 0 || ti == 6 ? 1 : 0);
  
      tj3Set(handle, TJPARAM_MAXPIXELS, 1048576);
      /* tj3LoadImage16() will refuse to load images larger than 1 Megapixel, so
         we don't need to check the width and height here. */
      if ((srcBuf = tj3LoadImage16(handle, filename, &width, 1, &height,
                                   &pf)) == NULL)
        continue;
  
      dstSize = maxBufSize = tj3JPEGBufSize(width, height, TJSAMP_444);
      if (tj3Get(handle, TJPARAM_NOREALLOC)) {
        if ((dstBuf = (unsigned char *)tj3Alloc(dstSize)) == NULL)
          goto bailout;
      } else
        dstBuf = NULL;
  
      tj3Set(handle, TJPARAM_LOSSLESS, 1);
      tj3Set(handle, TJPARAM_LOSSLESSPSV, tests[ti].psv);
      tj3Set(handle, TJPARAM_LOSSLESSPT, tests[ti].pt);
      if (tj3Compress16(handle, srcBuf, width, 0, height, pf, &dstBuf,
                        &dstSize) == 0) {
        /* Touch all of the output pixels in order to catch uninitialized reads
           when using MemorySanitizer. */
        for (i = 0; i < dstSize; i++)
          sum += dstBuf[i];
      }
  
      free(dstBuf);
      dstBuf = NULL;
      tj3Free(srcBuf);
      srcBuf = 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 * maxBufSize)
        goto bailout;
    }
  
  bailout:
    free(dstBuf);
    tj3Free(srcBuf);
    if (fd >= 0) {
      close(fd);
      if (strlen(filename) > 0) unlink(filename);
    }
    tj3Destroy(handle);
    return 0;
  }
  

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