kc3-lang/harfbuzz/test/fuzzing/hb-shape-fuzzer.cc

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• Hash : 0bf76154
  Author :
  Date : 2018-11-07T19:11:43
  

  [fuzzing] Take whatever text we can
  

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• test/fuzzing/hb-shape-fuzzer.cc

• #include "hb-fuzzer.hh"
  
  #include <hb-ot.h>
  #include <string.h>
  
  #define TEST_OT_FACE_NO_MAIN 1
  #include "../api/test-ot-face.c"
  #undef TEST_OT_FACE_NO_MAIN
  
  extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
  {
    hb_blob_t *blob = hb_blob_create ((const char *)data, size,
  				    HB_MEMORY_MODE_READONLY, NULL, NULL);
    hb_face_t *face = hb_face_create (blob, 0);
    hb_font_t *font = hb_font_create (face);
    hb_ot_font_set_funcs (font);
    hb_font_set_scale (font, 12, 12);
  
    {
      const char text[] = "ABCDEXYZ123@_%&)*$!";
      hb_buffer_t *buffer = hb_buffer_create ();
      hb_buffer_add_utf8 (buffer, text, -1, 0, -1);
      hb_buffer_guess_segment_properties (buffer);
      hb_shape (font, buffer, NULL, 0);
      hb_buffer_destroy (buffer);
    }
  
    uint32_t text32[16] = {0};
    unsigned int len = sizeof (text32);
    if (size < len)
      len = size;
    memcpy(text32, data + size - len, len);
  
    hb_buffer_t *buffer = hb_buffer_create ();
    hb_buffer_add_utf32 (buffer, text32, sizeof (text32) / sizeof (text32[0]), 0, -1);
    hb_buffer_guess_segment_properties (buffer);
    hb_shape (font, buffer, NULL, 0);
    hb_buffer_destroy (buffer);
  
    /* Misc calls on face. */
    test_face (face, text32[15]);
  
    hb_font_destroy (font);
    hb_face_destroy (face);
    hb_blob_destroy (blob);
    return 0;
  }
  

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