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 <algorithm>
8 #include <array>
9 #include <cstring>
10 #include <functional>
11 #include <memory>
12 #include <vector>
13
14 #include "fuzzer_utils.h"
15 #include "unicode/unistr.h"
16 #include "unicode/ucnv.h"
17
18 IcuEnvironment* env = new IcuEnvironment();
19
20 template <typename T>
21 using deleted_unique_ptr = std::unique_ptr<T, std::function<void(T*)>>;
22
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)23 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
24 UErrorCode status = U_ZERO_ERROR;
25 uint16_t rnd = 0;
26
27 if (size < 2) {
28 return 0;
29 }
30
31 rnd = *(reinterpret_cast<const uint16_t *>(data));
32 data = data + 2;
33 size = size - 2;
34
35 size_t unistr_size = size/2;
36 std::unique_ptr<char16_t[]> fuzzbuff(new char16_t[unistr_size]);
37 std::memcpy(fuzzbuff.get(), data, unistr_size * 2);
38
39 icu::UnicodeString fuzzstr(false, fuzzbuff.get(), unistr_size);
40
41 const char* converter_name =
42 ucnv_getAvailableName(rnd % ucnv_countAvailable());
43 deleted_unique_ptr<UConverter> converter(ucnv_open(converter_name, &status),
44 &ucnv_close);
45 if (U_FAILURE(status)) {
46 return 0;
47 }
48
49 static const size_t dest_buffer_size = 1024 * 1204;
50 static const std::unique_ptr<char[]> dest_buffer(new char[dest_buffer_size]);
51
52 fuzzstr.extract(dest_buffer.get(), dest_buffer_size, converter.get(), status);
53
54 return 0;
55 }
56