| // © 2019 and later: Unicode, Inc. and others. |
| // License & terms of use: http://www.unicode.org/copyright.html |
| |
| // Fuzzer for ucasemap. |
| |
| #include <cstring> |
| #include <functional> |
| #include <memory> |
| #include <stddef.h> |
| #include <stdint.h> |
| #include "fuzzer_utils.h" |
| #include "unicode/ucasemap.h" |
| |
| IcuEnvironment* env = new IcuEnvironment(); |
| |
| template<typename T> |
| using deleted_unique_ptr = std::unique_ptr<T,std::function<void(T*)>>; |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { |
| UErrorCode status = U_ZERO_ERROR; |
| uint8_t rnd8 = 0; |
| uint16_t rnd16 = 0; |
| uint32_t rnd32 = 0; |
| |
| if (size < 7) { |
| return 0; |
| } |
| // Extract one, two, and four bytes from fuzzer data for random selection |
| // purposes. |
| rnd8 = *data; |
| data++; |
| rnd16 = *(reinterpret_cast<const uint16_t *>(data)); |
| data = data + 2; |
| rnd32 = *(reinterpret_cast<const uint32_t *>(data)); |
| data = data + 4; |
| size = size - 7; |
| |
| std::unique_ptr<char[]> fuzzbuff(new char[size]); |
| std::memcpy(fuzzbuff.get(), data, size); |
| |
| const icu::Locale& locale = GetRandomLocale(rnd16); |
| uint32_t open_flags = rnd32; |
| |
| deleted_unique_ptr<UCaseMap> csm( |
| ucasemap_open(locale.getName(), open_flags, &status), |
| [](UCaseMap* map) { ucasemap_close(map); }); |
| |
| if (U_FAILURE(status)) { |
| return 0; |
| } |
| |
| int32_t dst_size = size * 2; |
| std::unique_ptr<char[]> dst(new char[dst_size]); |
| auto src = reinterpret_cast<const char*>(fuzzbuff.get()); |
| |
| switch (rnd8 % 4) { |
| case 0: ucasemap_utf8ToLower(csm.get(), dst.get(), dst_size, src, size, |
| &status); |
| break; |
| case 1: ucasemap_utf8ToUpper(csm.get(), dst.get(), dst_size, src, size, |
| &status); |
| break; |
| case 2: ucasemap_utf8ToTitle(csm.get(), dst.get(), dst_size, src, size, |
| &status); |
| break; |
| case 3: ucasemap_utf8FoldCase(csm.get(), dst.get(), dst_size, src, size, |
| &status); |
| break; |
| } |
| |
| return 0; |
| } |