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// 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 <limits.h>
#include <stddef.h>
#include <stdint.h>
#include "include/v8.h"
#include "src/heap/factory.h"
#include "src/objects/objects-inl.h"
#include "src/regexp/jsregexp.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::RegExpImpl::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(
i::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 i::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(i::Vector<const uint8_t>(one_byte_array, 6))
.ToHandleChecked();
i::Handle<i::String> two_byte =
factory->NewStringFromTwoByte(i::Vector<const i::uc16>(two_byte_array, 6))
.ToHandleChecked();
i::Handle<i::JSRegExp> regexp;
{
CHECK(!i_isolate->has_pending_exception());
v8::TryCatch try_catch(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;
}
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