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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <string>
#include <memory>
#include "android-base/logging.h"
#include "androidfw/CursorWindow.h"
#include "binder/Parcel.h"
#include <fuzzer/FuzzedDataProvider.h>
using android::CursorWindow;
using android::Parcel;
extern "C" int LLVMFuzzerInitialize(int *, char ***) {
setenv("ANDROID_LOG_TAGS", "*:s", 1);
android::base::InitLogging(nullptr, &android::base::StderrLogger);
return 0;
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
Parcel p;
p.setData(data, size);
CursorWindow* w = nullptr;
if (!CursorWindow::createFromParcel(&p, &w)) {
LOG(WARNING) << "Valid cursor with " << w->getNumRows() << " rows, "
<< w->getNumColumns() << " cols";
// Try obtaining heap allocations for most items; we trim the
// search space to speed things up
auto rows = std::min(w->getNumRows(), static_cast<uint32_t>(128));
auto cols = std::min(w->getNumColumns(), static_cast<uint32_t>(128));
for (auto row = 0; row < rows; row++) {
for (auto col = 0; col < cols; col++) {
auto field = w->getFieldSlot(row, col);
if (!field) continue;
switch (w->getFieldSlotType(field)) {
case CursorWindow::FIELD_TYPE_STRING: {
size_t size;
w->getFieldSlotValueString(field, &size);
break;
}
case CursorWindow::FIELD_TYPE_BLOB: {
size_t size;
w->getFieldSlotValueBlob(field, &size);
break;
}
}
}
}
// Finally, try obtaining the furthest valid field
if (rows > 0 && cols > 0) {
w->getFieldSlot(w->getNumRows() - 1, w->getNumColumns() - 1);
}
}
delete w;
return 0;
}
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