1 // © 2023 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3
4 // Fuzzer for TimeZoneNames.
5
6 #include <cstring>
7
8 #include "fuzzer_utils.h"
9
10 #include "unicode/tznames.h"
11 #include "unicode/locid.h"
12
TestNames(icu::TimeZoneNames * names,const icu::UnicodeString & text,UDate date,UTimeZoneNameType type)13 void TestNames(icu::TimeZoneNames* names, const icu::UnicodeString& text, UDate date, UTimeZoneNameType type) {
14 UErrorCode status = U_ZERO_ERROR;
15 std::unique_ptr<icu::StringEnumeration> enumeration(
16 names->getAvailableMetaZoneIDs(status));
17 status = U_ZERO_ERROR;
18 enumeration.reset(
19 names->getAvailableMetaZoneIDs(text, status));
20 icu::UnicodeString output;
21 names->getMetaZoneID(text, date, output);
22 names->getMetaZoneDisplayName(text, type, output);
23 names->getTimeZoneDisplayName(text, type, output);
24 names->getExemplarLocationName(text, output);
25 names->getDisplayName(text, type, date, output);
26 }
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)27 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
28 uint16_t rnd;
29 UDate date;
30
31 UTimeZoneNameType type;
32 if (size < sizeof(rnd) + sizeof(date) + sizeof(type)) return 0;
33 icu::StringPiece fuzzData(reinterpret_cast<const char *>(data), size);
34
35 std::memcpy(&rnd, fuzzData.data(), sizeof(rnd));
36 icu::Locale locale = GetRandomLocale(rnd);
37 fuzzData.remove_prefix(sizeof(rnd));
38
39 std::memcpy(&date, fuzzData.data(), sizeof(date));
40 fuzzData.remove_prefix(sizeof(date));
41
42 std::memcpy(&type, fuzzData.data(), sizeof(type));
43 fuzzData.remove_prefix(sizeof(type));
44
45 size_t len = fuzzData.size() / sizeof(char16_t);
46 icu::UnicodeString text(false, reinterpret_cast<const char16_t*>(fuzzData.data()), len);
47
48 UErrorCode status = U_ZERO_ERROR;
49 std::unique_ptr<icu::TimeZoneNames> names(
50 icu::TimeZoneNames::createInstance(locale, status));
51 if (U_SUCCESS(status)) {
52 TestNames(names.get(), text, date, type);
53 }
54
55 status = U_ZERO_ERROR;
56 names.reset(
57 icu::TimeZoneNames::createTZDBInstance(locale, status));
58 if (U_SUCCESS(status)) {
59 TestNames(names.get(), text, date, type);
60 }
61
62 return EXIT_SUCCESS;
63 }
64