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/*
* Copyright (C) 2019 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.
*/
#define FUZZ_LOG_TAG "binder"
#include "binder.h"
#include "parcelables/EmptyParcelable.h"
#include "parcelables/GenericDataParcelable.h"
#include "parcelables/SingleDataParcelable.h"
#include "util.h"
#include <android/os/IServiceManager.h>
#include <binder/ParcelableHolder.h>
#include <binder/PersistableBundle.h>
#include <binder/Status.h>
#include <utils/Flattenable.h>
#include "../../Utils.h"
using ::android::HexString;
using ::android::status_t;
using ::android::binder::unique_fd;
enum ByteEnum : int8_t {};
enum IntEnum : int32_t {};
enum LongEnum : int64_t {};
class ExampleParcelable : public android::Parcelable {
public:
status_t writeToParcel(android::Parcel* /*parcel*/) const override {
FUZZ_LOG() << "should not reach";
abort();
}
status_t readFromParcel(const android::Parcel* parcel) override {
mExampleExtraField++;
return parcel->readInt64(&(this->mExampleUsedData));
}
private:
int64_t mExampleExtraField = 0;
int64_t mExampleUsedData = 0;
};
struct ExampleFlattenable : public android::Flattenable<ExampleFlattenable> {
public:
size_t getFlattenedSize() const { return sizeof(mValue); }
size_t getFdCount() const { return 0; }
status_t flatten(void*& /*buffer*/, size_t& /*size*/, int*& /*fds*/, size_t& /*count*/) const {
FUZZ_LOG() << "should not reach";
abort();
}
status_t unflatten(void const*& buffer, size_t& size, int const*& /*fds*/, size_t& /*count*/) {
if (size < sizeof(mValue)) {
return android::NO_MEMORY;
}
android::FlattenableUtils::read(buffer, size, mValue);
return android::OK;
}
private:
int32_t mValue = 0xFEEDBEEF;
};
struct ExampleLightFlattenable : public android::LightFlattenablePod<ExampleLightFlattenable> {
int32_t mValue = 0;
};
struct BigStruct {
uint8_t data[1337];
};
#define PARCEL_READ_WITH_STATUS(T, FUN) \
[](const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) { \
FUZZ_LOG() << "about to read " #T " using " #FUN " with status"; \
T t{}; \
status_t status = p.FUN(&t); \
FUZZ_LOG() << #T " status: " << status /* << " value: " << t*/; \
}
#define PARCEL_READ_NO_STATUS(T, FUN) \
[](const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) { \
FUZZ_LOG() << "about to read " #T " using " #FUN " with no status"; \
T t = p.FUN(); \
(void)t; \
FUZZ_LOG() << #T " done " /* << " value: " << t*/; \
}
#define PARCEL_READ_OPT_STATUS(T, FUN) \
PARCEL_READ_WITH_STATUS(T, FUN), \
PARCEL_READ_NO_STATUS(T, FUN)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
// clang-format off
std::vector<ParcelRead<::android::Parcel>> BINDER_PARCEL_READ_FUNCTIONS {
PARCEL_READ_NO_STATUS(size_t, dataSize),
PARCEL_READ_NO_STATUS(size_t, dataAvail),
PARCEL_READ_NO_STATUS(size_t, dataPosition),
PARCEL_READ_NO_STATUS(size_t, dataCapacity),
PARCEL_READ_NO_STATUS(::android::binder::Status, enforceNoDataAvail),
[] (const ::android::Parcel& p, FuzzedDataProvider& provider) {
// aborts on larger values
size_t pos = provider.ConsumeIntegralInRange<size_t>(0, INT32_MAX);
FUZZ_LOG() << "about to setDataPosition: " << pos;
p.setDataPosition(pos);
FUZZ_LOG() << "setDataPosition done";
},
PARCEL_READ_NO_STATUS(size_t, allowFds),
PARCEL_READ_NO_STATUS(size_t, hasFileDescriptors),
PARCEL_READ_NO_STATUS(std::vector<android::sp<android::IBinder>>, debugReadAllStrongBinders),
PARCEL_READ_NO_STATUS(std::vector<int>, debugReadAllFileDescriptors),
[] (const ::android::Parcel& p, FuzzedDataProvider& provider) {
std::string interface = provider.ConsumeRandomLengthString();
FUZZ_LOG() << "about to enforceInterface: " << interface;
bool b = p.enforceInterface(::android::String16(interface.c_str()));
FUZZ_LOG() << "enforced interface: " << b;
},
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to checkInterface";
android::sp<android::IBinder> aBinder = new android::BBinder();
bool b = p.checkInterface(aBinder.get());
FUZZ_LOG() << "checked interface: " << b;
},
PARCEL_READ_NO_STATUS(size_t, objectsCount),
PARCEL_READ_NO_STATUS(status_t, errorCheck),
[] (const ::android::Parcel& p, FuzzedDataProvider& provider) {
// Read at least a bit. Unbounded allocation would OOM.
size_t len = provider.ConsumeIntegralInRange<size_t>(0, 1024);
FUZZ_LOG() << "about to read void*";
std::vector<uint8_t> data(len);
status_t status = p.read(data.data(), len);
FUZZ_LOG() << "read status: " << status;
},
[] (const ::android::Parcel& p, FuzzedDataProvider& provider) {
size_t len = provider.ConsumeIntegral<size_t>();
FUZZ_LOG() << "about to readInplace";
const void* r = p.readInplace(len);
FUZZ_LOG() << "readInplace done. pointer: " << r << " bytes: " << (r ? HexString(r, len) : "null");
},
PARCEL_READ_OPT_STATUS(int32_t, readInt32),
PARCEL_READ_OPT_STATUS(uint32_t, readUint32),
PARCEL_READ_OPT_STATUS(int64_t, readInt64),
PARCEL_READ_OPT_STATUS(uint64_t, readUint64),
PARCEL_READ_OPT_STATUS(float, readFloat),
PARCEL_READ_OPT_STATUS(double, readDouble),
PARCEL_READ_OPT_STATUS(bool, readBool),
PARCEL_READ_OPT_STATUS(char16_t, readChar),
PARCEL_READ_OPT_STATUS(int8_t, readByte),
PARCEL_READ_WITH_STATUS(std::string, readUtf8FromUtf16),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::string>, readUtf8FromUtf16),
PARCEL_READ_WITH_STATUS(std::optional<std::string>, readUtf8FromUtf16),
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to read c-str";
const char* str = p.readCString();
FUZZ_LOG() << "read c-str: " << (str ? str : "<empty string>");
},
PARCEL_READ_OPT_STATUS(android::String8, readString8),
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to readString8Inplace";
size_t outLen = 0;
const char* str = p.readString8Inplace(&outLen);
std::string bytes = str ? HexString(str, sizeof(char) * (outLen + 1)) : "null";
FUZZ_LOG() << "readString8Inplace: " << bytes << " size: " << outLen;
},
PARCEL_READ_OPT_STATUS(android::String16, readString16),
PARCEL_READ_WITH_STATUS(std::unique_ptr<android::String16>, readString16),
PARCEL_READ_WITH_STATUS(std::optional<android::String16>, readString16),
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to readString16Inplace";
size_t outLen = 0;
const char16_t* str = p.readString16Inplace(&outLen);
std::string bytes = str ? HexString(str, sizeof(char16_t) * (outLen + 1)) : "null";
FUZZ_LOG() << "readString16Inplace: " << bytes << " size: " << outLen;
},
PARCEL_READ_WITH_STATUS(android::sp<android::IBinder>, readStrongBinder),
PARCEL_READ_WITH_STATUS(android::sp<android::IBinder>, readNullableStrongBinder),
PARCEL_READ_WITH_STATUS(std::vector<ByteEnum>, readEnumVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<ByteEnum>>, readEnumVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<ByteEnum>>, readEnumVector),
PARCEL_READ_WITH_STATUS(std::vector<IntEnum>, readEnumVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<IntEnum>>, readEnumVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<IntEnum>>, readEnumVector),
PARCEL_READ_WITH_STATUS(std::vector<LongEnum>, readEnumVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<LongEnum>>, readEnumVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<LongEnum>>, readEnumVector),
// only reading one parcelable type for now
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<std::unique_ptr<ExampleParcelable>>>, readParcelableVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<std::optional<ExampleParcelable>>>, readParcelableVector),
PARCEL_READ_WITH_STATUS(std::vector<ExampleParcelable>, readParcelableVector),
PARCEL_READ_WITH_STATUS(ExampleParcelable, readParcelable),
PARCEL_READ_WITH_STATUS(std::unique_ptr<ExampleParcelable>, readParcelable),
PARCEL_READ_WITH_STATUS(std::optional<ExampleParcelable>, readParcelable),
// only reading one binder type for now
PARCEL_READ_WITH_STATUS(android::sp<android::os::IServiceManager>, readStrongBinder),
PARCEL_READ_WITH_STATUS(android::sp<android::os::IServiceManager>, readNullableStrongBinder),
PARCEL_READ_WITH_STATUS(std::vector<android::sp<android::os::IServiceManager>>, readStrongBinderVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<android::sp<android::os::IServiceManager>>>, readStrongBinderVector),
PARCEL_READ_WITH_STATUS(::std::unique_ptr<std::vector<android::sp<android::IBinder>>>, readStrongBinderVector),
PARCEL_READ_WITH_STATUS(::std::optional<std::vector<android::sp<android::IBinder>>>, readStrongBinderVector),
PARCEL_READ_WITH_STATUS(std::vector<android::sp<android::IBinder>>, readStrongBinderVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<int8_t>>, readByteVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<int8_t>>, readByteVector),
PARCEL_READ_WITH_STATUS(std::vector<int8_t>, readByteVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<uint8_t>>, readByteVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<uint8_t>>, readByteVector),
PARCEL_READ_WITH_STATUS(std::vector<uint8_t>, readByteVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<int32_t>>, readInt32Vector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<int32_t>>, readInt32Vector),
PARCEL_READ_WITH_STATUS(std::vector<int32_t>, readInt32Vector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<int64_t>>, readInt64Vector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<int64_t>>, readInt64Vector),
PARCEL_READ_WITH_STATUS(std::vector<int64_t>, readInt64Vector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<uint64_t>>, readUint64Vector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<uint64_t>>, readUint64Vector),
PARCEL_READ_WITH_STATUS(std::vector<uint64_t>, readUint64Vector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<float>>, readFloatVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<float>>, readFloatVector),
PARCEL_READ_WITH_STATUS(std::vector<float>, readFloatVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<double>>, readDoubleVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<double>>, readDoubleVector),
PARCEL_READ_WITH_STATUS(std::vector<double>, readDoubleVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<bool>>, readBoolVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<bool>>, readBoolVector),
PARCEL_READ_WITH_STATUS(std::vector<bool>, readBoolVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<char16_t>>, readCharVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<char16_t>>, readCharVector),
PARCEL_READ_WITH_STATUS(std::vector<char16_t>, readCharVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<std::unique_ptr<android::String16>>>, readString16Vector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<std::optional<android::String16>>>, readString16Vector),
PARCEL_READ_WITH_STATUS(std::vector<android::String16>, readString16Vector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<std::unique_ptr<std::string>>>, readUtf8VectorFromUtf16Vector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<std::optional<std::string>>>, readUtf8VectorFromUtf16Vector),
PARCEL_READ_WITH_STATUS(std::vector<std::string>, readUtf8VectorFromUtf16Vector),
#define COMMA ,
PARCEL_READ_WITH_STATUS(std::array<uint8_t COMMA 3>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<uint8_t COMMA 3>>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::array<char16_t COMMA 3>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<char16_t COMMA 3>>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::array<std::string COMMA 3>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<std::optional<std::string> COMMA 3>>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::array<android::String16 COMMA 3>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<std::optional<android::String16> COMMA 3>>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::array<android::sp<android::IBinder> COMMA 3>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<android::sp<android::IBinder> COMMA 3>>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::array<ExampleParcelable COMMA 3>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<std::optional<ExampleParcelable> COMMA 3>>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::array<ByteEnum COMMA 3>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<ByteEnum COMMA 3>>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::array<IntEnum COMMA 3>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<IntEnum COMMA 3>>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::array<LongEnum COMMA 3>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<LongEnum COMMA 3>>, readFixedArray),
// nested arrays
PARCEL_READ_WITH_STATUS(std::array<std::array<uint8_t COMMA 3> COMMA 4>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<std::array<uint8_t COMMA 3> COMMA 4>>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::array<ExampleParcelable COMMA 3>, readFixedArray),
PARCEL_READ_WITH_STATUS(std::optional<std::array<std::array<std::optional<ExampleParcelable> COMMA 3> COMMA 4>>, readFixedArray),
#undef COMMA
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to read flattenable";
ExampleFlattenable f;
status_t status = p.read(f);
FUZZ_LOG() << "read flattenable: " << status;
},
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to read lite flattenable";
ExampleLightFlattenable f;
status_t status = p.read(f);
FUZZ_LOG() << "read lite flattenable: " << status;
},
PARCEL_READ_WITH_STATUS(std::vector<uint8_t>, resizeOutVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<uint8_t>>, resizeOutVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<uint8_t>>, resizeOutVector),
PARCEL_READ_WITH_STATUS(std::vector<BigStruct>, resizeOutVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<BigStruct>>, resizeOutVector),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<BigStruct>>, resizeOutVector),
PARCEL_READ_NO_STATUS(int32_t, readExceptionCode),
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to readNativeHandle";
native_handle_t* t = p.readNativeHandle();
FUZZ_LOG() << "readNativeHandle: " << t;
if (t != nullptr) {
FUZZ_LOG() << "about to free readNativeHandle";
native_handle_close(t);
native_handle_delete(t);
FUZZ_LOG() << "readNativeHandle freed";
}
},
PARCEL_READ_NO_STATUS(int, readFileDescriptor),
PARCEL_READ_NO_STATUS(int, readParcelFileDescriptor),
PARCEL_READ_WITH_STATUS(unique_fd, readUniqueFileDescriptor),
PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<unique_fd>>,
readUniqueFileDescriptorVector),
PARCEL_READ_WITH_STATUS(std::optional<std::vector<unique_fd>>, readUniqueFileDescriptorVector),
PARCEL_READ_WITH_STATUS(std::vector<unique_fd>, readUniqueFileDescriptorVector),
[] (const ::android::Parcel& p, FuzzedDataProvider& provider) {
size_t len = provider.ConsumeIntegral<size_t>();
FUZZ_LOG() << "about to readBlob";
::android::Parcel::ReadableBlob blob;
status_t status = p.readBlob(len, &blob);
FUZZ_LOG() << "readBlob status: " << status;
},
[] (const ::android::Parcel& p, FuzzedDataProvider& provider) {
FUZZ_LOG() << "about to readObject";
bool nullMetaData = provider.ConsumeBool();
const void* obj = static_cast<const void*>(p.readObject(nullMetaData));
FUZZ_LOG() << "readObject: " << obj;
},
PARCEL_READ_NO_STATUS(uid_t, readCallingWorkSourceUid),
PARCEL_READ_NO_STATUS(size_t, getOpenAshmemSize),
// additional parcelable objects defined in libbinder
[] (const ::android::Parcel& p, FuzzedDataProvider& provider) {
using ::android::os::ParcelableHolder;
using ::android::Parcelable;
FUZZ_LOG() << "about to read ParcelableHolder using readParcelable with status";
Parcelable::Stability stability = provider.ConsumeBool()
? Parcelable::Stability::STABILITY_LOCAL
: Parcelable::Stability::STABILITY_VINTF;
ParcelableHolder t = ParcelableHolder(stability);
status_t status = p.readParcelable(&t);
FUZZ_LOG() << "ParcelableHolder status: " << status;
},
PARCEL_READ_WITH_STATUS(android::os::PersistableBundle, readParcelable),
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to call hasFileDescriptorsInRange() with status";
size_t offset = p.readUint32();
size_t length = p.readUint32();
bool result;
status_t status = p.hasFileDescriptorsInRange(offset, length, &result);
FUZZ_LOG() << " status: " << status << " result: " << result;
},
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to call hasBinders() with status";
bool result;
status_t status = p.hasBinders(&result);
FUZZ_LOG() << " status: " << status << " result: " << result;
},
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to call hasBindersInRange() with status";
size_t offset = p.readUint32();
size_t length = p.readUint32();
bool result;
status_t status = p.hasBindersInRange(offset, length, &result);
FUZZ_LOG() << " status: " << status << " result: " << result;
},
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to call compareDataInRange() with status";
size_t thisOffset = p.readUint32();
size_t otherOffset = p.readUint32();
size_t length = p.readUint32();
int result;
status_t status = p.compareDataInRange(thisOffset, p, otherOffset, length, &result);
FUZZ_LOG() << " status: " << status << " result: " << result;
},
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to call readFromParcel() with status for EmptyParcelable";
parcelables::EmptyParcelable emptyParcelable{};
status_t status = emptyParcelable.readFromParcel(&p);
FUZZ_LOG() << " status: " << status;
},
[] (const ::android::Parcel& p , FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to call readFromParcel() with status for SingleDataParcelable";
parcelables::SingleDataParcelable singleDataParcelable;
status_t status = singleDataParcelable.readFromParcel(&p);
FUZZ_LOG() << " status: " << status;
},
[] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to call readFromParcel() with status for GenericDataParcelable";
parcelables::GenericDataParcelable genericDataParcelable;
status_t status = genericDataParcelable.readFromParcel(&p);
FUZZ_LOG() << " status: " << status;
std::string toString = genericDataParcelable.toString();
FUZZ_LOG() << " toString() result: " << toString;
},
};
// clang-format on
#pragma clang diagnostic pop
|
