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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 "util.h"
#include <android/os/IServiceManager.h>
#include <binder/ParcelableHolder.h>
#include <binder/PersistableBundle.h>
using ::android::status_t;
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;
};
#define PARCEL_READ_WITH_STATUS(T, FUN) \
[] (const ::android::Parcel& p, uint8_t /*data*/) {\
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, uint8_t /*data*/) {\
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),
[] (const ::android::Parcel& p, uint8_t pos) {
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),
[] (const ::android::Parcel& p, uint8_t len) {
std::string interface(len, 'a');
FUZZ_LOG() << "about to enforceInterface: " << interface;
bool b = p.enforceInterface(::android::String16(interface.c_str()));
FUZZ_LOG() << "enforced interface: " << b;
},
[] (const ::android::Parcel& p, uint8_t /*len*/) {
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, uint8_t len) {
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, uint8_t len) {
FUZZ_LOG() << "about to readInplace";
const void* r = p.readInplace(len);
FUZZ_LOG() << "readInplace done. pointer: " << r << " bytes: " << hexString(r, len);
},
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, uint8_t /*data*/) {
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, uint8_t /*data*/) {
FUZZ_LOG() << "about to readString8Inplace";
size_t outLen = 0;
const char* str = p.readString8Inplace(&outLen);
std::string bytes = hexString(str, sizeof(char) * (outLen + 1));
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, uint8_t /*data*/) {
FUZZ_LOG() << "about to readString16Inplace";
size_t outLen = 0;
const char16_t* str = p.readString16Inplace(&outLen);
std::string bytes = hexString(str, sizeof(char16_t) * (outLen + 1));
FUZZ_LOG() << "readString16Inplace: " << bytes << " size: " << outLen;
},
PARCEL_READ_WITH_STATUS(android::sp<android::IBinder>, readStrongBinder),
PARCEL_READ_WITH_STATUS(android::sp<android::IBinder>, readNullableStrongBinder),
// TODO(b/131868573): can force read of arbitrarily sized vector
// 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
// TODO(b/131868573): can force read of arbitrarily sized vector
// 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),
// TODO(b/131868573): can force read of arbitrarily sized vector
// 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),
// TODO(b/131868573): can force read of arbitrarily sized vector
// 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),
[] (const android::Parcel& p, uint8_t /*len*/) {
FUZZ_LOG() << "about to read flattenable";
ExampleFlattenable f;
status_t status = p.read(f);
FUZZ_LOG() << "read flattenable: " << status;
},
[] (const android::Parcel& p, uint8_t /*len*/) {
FUZZ_LOG() << "about to read lite flattenable";
ExampleLightFlattenable f;
status_t status = p.read(f);
FUZZ_LOG() << "read lite flattenable: " << status;
},
// TODO(b/131868573): can force read of arbitrarily sized vector
// TODO: resizeOutVector
PARCEL_READ_NO_STATUS(int32_t, readExceptionCode),
[] (const android::Parcel& p, uint8_t /*len*/) {
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(android::base::unique_fd, readUniqueFileDescriptor),
// TODO(b/131868573): can force read of arbitrarily sized vector
// PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<android::base::unique_fd>>, readUniqueFileDescriptorVector),
// PARCEL_READ_WITH_STATUS(std::optional<std::vector<android::base::unique_fd>>, readUniqueFileDescriptorVector),
// PARCEL_READ_WITH_STATUS(std::vector<android::base::unique_fd>, readUniqueFileDescriptorVector),
[] (const android::Parcel& p, uint8_t len) {
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, uint8_t options) {
FUZZ_LOG() << "about to readObject";
bool nullMetaData = options & 0x1;
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, getBlobAshmemSize),
PARCEL_READ_NO_STATUS(size_t, getOpenAshmemSize),
// additional parcelable objects defined in libbinder
[] (const ::android::Parcel& p, uint8_t data) {
using ::android::os::ParcelableHolder;
using ::android::Parcelable;
FUZZ_LOG() << "about to read ParcelableHolder using readParcelable with status";
Parcelable::Stability stability = Parcelable::Stability::STABILITY_LOCAL;
if ( (data & 1) == 1 ) {
stability = 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),
};
// clang-format on
#pragma clang diagnostic pop
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