icuSources/test/fuzzer/unicode_string_codepage_create_fuzzer.cpp

   1 // © 2019 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3
   4 #include <stddef.h>
   5 #include <stdint.h>
   6
   7 #include <cstring>
   8 #include <algorithm>
   9 #include <array>
  10 #include <vector>
  11
  12 #include "fuzzer_utils.h"
  13 #include "unicode/unistr.h"
  14
  15 // Taken from third_party/icu/source/data/mappings/convrtrs.txt file.
  16 static const std::array<const char*, 45> kConverters = {
  17   {
  18     "UTF-8",
  19     "utf-16be",
  20     "utf-16le",
  21     "UTF-32",
  22     "UTF-32BE",
  23     "UTF-32LE",
  24     "ibm866-html",
  25     "iso-8859-2-html",
  26     "iso-8859-3-html",
  27     "iso-8859-4-html",
  28     "iso-8859-5-html",
  29     "iso-8859-6-html",
  30     "iso-8859-7-html",
  31     "iso-8859-8-html",
  32     "ISO-8859-8-I",
  33     "iso-8859-10-html",
  34     "iso-8859-13-html",
  35     "iso-8859-14-html",
  36     "iso-8859-15-html",
  37     "iso-8859-16-html",
  38     "koi8-r-html",
  39     "koi8-u-html",
  40     "macintosh-html",
  41     "windows-874-html",
  42     "windows-1250-html",
  43     "windows-1251-html",
  44     "windows-1252-html",
  45     "windows-1253-html",
  46     "windows-1254-html",
  47     "windows-1255-html",
  48     "windows-1256-html",
  49     "windows-1257-html",
  50     "windows-1258-html",
  51     "x-mac-cyrillic-html",
  52     "windows-936-2000",
  53     "gb18030",
  54     "big5-html",
  55     "euc-jp-html",
  56     "ISO_2022,locale=ja,version=0",
  57     "shift_jis-html",
  58     "euc-kr-html",
  59     "ISO-2022-KR",
  60     "ISO-2022-CN",
  61     "ISO-2022-CN-EXT",
  62     "HZ-GB-2312"
  63   }
  64 };
  65
  66 IcuEnvironment* env = new IcuEnvironment();
  67
  68 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
  69   if (size < 1) {
  70     return 0;
  71   }
  72
  73   // First byte is used for random converter selection.
  74   uint8_t rnd = *data;
  75   data++;
  76   size--;
  77
  78   std::unique_ptr<char[]> fuzzbuff(new char[size]);
  79   std::memcpy(fuzzbuff.get(), data, size);
  80
  81   icu::UnicodeString str(fuzzbuff.get(), size,
  82                          kConverters[rnd % kConverters.size()]);
  83
  84   return 0;
  85 }