// Copyright 2016 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "src/regexp/regexp.h" #include <limits.h> #include <stddef.h> #include <stdint.h> #include "include/v8-context.h" #include "include/v8-exception.h" #include "include/v8-isolate.h" #include "include/v8-local-handle.h" #include "src/base/strings.h" #include "src/heap/factory.h" #include "src/objects/objects-inl.h" #include "test/fuzzer/fuzzer-support.h" namespace i = v8::internal; void Test(v8::Isolate* isolate, i::Handle<i::JSRegExp> regexp, i::Handle<i::String> subject, i::Handle<i::RegExpMatchInfo> results_array) { v8::TryCatch try_catch(isolate); i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate); if (i::RegExp::Exec(i_isolate, regexp, subject, 0, results_array).is_null()) { i_isolate->OptionalRescheduleException(true); } } extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { v8_fuzzer::FuzzerSupport* support = v8_fuzzer::FuzzerSupport::Get(); v8::Isolate* isolate = support->GetIsolate(); v8::Isolate::Scope isolate_scope(isolate); v8::HandleScope handle_scope(isolate); v8::Context::Scope context_scope(support->GetContext()); v8::TryCatch try_catch(isolate); i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate); i::Factory* factory = i_isolate->factory(); CHECK(!i_isolate->has_pending_exception()); if (size > INT_MAX) return 0; i::MaybeHandle<i::String> maybe_source = factory->NewStringFromOneByte( v8::base::Vector<const uint8_t>(data, static_cast<int>(size))); i::Handle<i::String> source; if (!maybe_source.ToHandle(&source)) { i_isolate->clear_pending_exception(); return 0; } static const int kAllFlags = i::JSRegExp::kGlobal | i::JSRegExp::kIgnoreCase | i::JSRegExp::kMultiline | i::JSRegExp::kSticky | i::JSRegExp::kUnicode | i::JSRegExp::kDotAll; const uint8_t one_byte_array[6] = {'f', 'o', 'o', 'b', 'a', 'r'}; const v8::base::uc16 two_byte_array[6] = {'f', 0xD83D, 0xDCA9, 'b', 'a', 0x2603}; CHECK(!i_isolate->has_pending_exception()); i::Handle<i::RegExpMatchInfo> results_array = factory->NewRegExpMatchInfo(); i::Handle<i::String> one_byte = factory ->NewStringFromOneByte( v8::base::Vector<const uint8_t>(one_byte_array, 6)) .ToHandleChecked(); i::Handle<i::String> two_byte = factory ->NewStringFromTwoByte( v8::base::Vector<const v8::base::uc16>(two_byte_array, 6)) .ToHandleChecked(); i::Handle<i::JSRegExp> regexp; { CHECK(!i_isolate->has_pending_exception()); v8::TryCatch try_catch_inner(isolate); // Create a string so that we can calculate a hash from the input data. std::string str = std::string(reinterpret_cast<const char*>(data), size); i::JSRegExp::Flags flag = static_cast<i::JSRegExp::Flags>( std::hash<std::string>()(str) % (kAllFlags + 1)); i::MaybeHandle<i::JSRegExp> maybe_regexp = i::JSRegExp::New(i_isolate, source, flag); if (!maybe_regexp.ToHandle(®exp)) { i_isolate->clear_pending_exception(); return 0; } } Test(isolate, regexp, one_byte, results_array); Test(isolate, regexp, two_byte, results_array); Test(isolate, regexp, factory->empty_string(), results_array); Test(isolate, regexp, source, results_array); isolate->RequestGarbageCollectionForTesting( v8::Isolate::kFullGarbageCollection); CHECK(!i_isolate->has_pending_exception()); return 0; }