/*
* Copyright (C) 2015 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 LOG_TAG "PersistableBundle"
#include <binder/PersistableBundle.h>
#include <private/binder/ParcelValTypes.h>
#include <limits>
#include <binder/IBinder.h>
#include <binder/Parcel.h>
#include <log/log.h>
#include <utils/Errors.h>
using android::BAD_TYPE;
using android::BAD_VALUE;
using android::NO_ERROR;
using android::Parcel;
using android::sp;
using android::status_t;
using android::UNEXPECTED_NULL;
using std::map;
using std::set;
using std::vector;
using namespace ::android::binder;
enum {
// Keep them in sync with BUNDLE_MAGIC* in frameworks/base/core/java/android/os/BaseBundle.java.
BUNDLE_MAGIC = 0x4C444E42,
BUNDLE_MAGIC_NATIVE = 0x4C444E44,
};
namespace {
template <typename T>
bool getValue(const android::String16& key, T* out, const map<android::String16, T>& map) {
const auto& it = map.find(key);
if (it == map.end()) return false;
*out = it->second;
return true;
}
template <typename T>
set<android::String16> getKeys(const map<android::String16, T>& map) {
if (map.empty()) return set<android::String16>();
set<android::String16> keys;
for (const auto& key_value_pair : map) {
keys.emplace(key_value_pair.first);
}
return keys;
}
} // namespace
namespace android {
namespace os {
#define RETURN_IF_FAILED(calledOnce) \
{ \
status_t returnStatus = calledOnce; \
if (returnStatus) { \
ALOGE("Failed at %s:%d (%s)", __FILE__, __LINE__, __func__); \
return returnStatus; \
} \
}
#define RETURN_IF_ENTRY_ERASED(map, key) \
{ \
size_t num_erased = (map).erase(key); \
if (num_erased) { \
ALOGE("Failed at %s:%d (%s)", __FILE__, __LINE__, __func__); \
return num_erased; \
} \
}
status_t PersistableBundle::writeToParcel(Parcel* parcel) const {
/*
* Keep implementation in sync with writeToParcelInner() in
* frameworks/base/core/java/android/os/BaseBundle.java.
*/
// Special case for empty bundles.
if (empty()) {
RETURN_IF_FAILED(parcel->writeInt32(0));
return NO_ERROR;
}
size_t length_pos = parcel->dataPosition();
RETURN_IF_FAILED(parcel->writeInt32(1)); // dummy, will hold length
RETURN_IF_FAILED(parcel->writeInt32(BUNDLE_MAGIC_NATIVE));
size_t start_pos = parcel->dataPosition();
RETURN_IF_FAILED(writeToParcelInner(parcel));
size_t end_pos = parcel->dataPosition();
// Backpatch length. This length value includes the length header.
parcel->setDataPosition(length_pos);
size_t length = end_pos - start_pos;
if (length > std::numeric_limits<int32_t>::max()) {
ALOGE("Parcel length (%zu) too large to store in 32-bit signed int", length);
return BAD_VALUE;
}
RETURN_IF_FAILED(parcel->writeInt32(static_cast<int32_t>(length)));
parcel->setDataPosition(end_pos);
return NO_ERROR;
}
status_t PersistableBundle::readFromParcel(const Parcel* parcel) {
/*
* Keep implementation in sync with readFromParcelInner() in
* frameworks/base/core/java/android/os/BaseBundle.java.
*/
int32_t length = parcel->readInt32();
if (length < 0) {
ALOGE("Bad length in parcel: %d", length);
return UNEXPECTED_NULL;
}
return readFromParcelInner(parcel, static_cast<size_t>(length));
}
bool PersistableBundle::empty() const {
return size() == 0u;
}
size_t PersistableBundle::size() const {
return (mBoolMap.size() +
mIntMap.size() +
mLongMap.size() +
mDoubleMap.size() +
mStringMap.size() +
mBoolVectorMap.size() +
mIntVectorMap.size() +
mLongVectorMap.size() +
mDoubleVectorMap.size() +
mStringVectorMap.size() +
mPersistableBundleMap.size());
}
size_t PersistableBundle::erase(const String16& key) {
RETURN_IF_ENTRY_ERASED(mBoolMap, key);
RETURN_IF_ENTRY_ERASED(mIntMap, key);
RETURN_IF_ENTRY_ERASED(mLongMap, key);
RETURN_IF_ENTRY_ERASED(mDoubleMap, key);
RETURN_IF_ENTRY_ERASED(mStringMap, key);
RETURN_IF_ENTRY_ERASED(mBoolVectorMap, key);
RETURN_IF_ENTRY_ERASED(mIntVectorMap, key);
RETURN_IF_ENTRY_ERASED(mLongVectorMap, key);
RETURN_IF_ENTRY_ERASED(mDoubleVectorMap, key);
RETURN_IF_ENTRY_ERASED(mStringVectorMap, key);
return mPersistableBundleMap.erase(key);
}
void PersistableBundle::putBoolean(const String16& key, bool value) {
erase(key);
mBoolMap[key] = value;
}
void PersistableBundle::putInt(const String16& key, int32_t value) {
erase(key);
mIntMap[key] = value;
}
void PersistableBundle::putLong(const String16& key, int64_t value) {
erase(key);
mLongMap[key] = value;
}
void PersistableBundle::putDouble(const String16& key, double value) {
erase(key);
mDoubleMap[key] = value;
}
void PersistableBundle::putString(const String16& key, const String16& value) {
erase(key);
mStringMap[key] = value;
}
void PersistableBundle::putBooleanVector(const String16& key, const vector<bool>& value) {
erase(key);
mBoolVectorMap[key] = value;
}
void PersistableBundle::putIntVector(const String16& key, const vector<int32_t>& value) {
erase(key);
mIntVectorMap[key] = value;
}
void PersistableBundle::putLongVector(const String16& key, const vector<int64_t>& value) {
erase(key);
mLongVectorMap[key] = value;
}
void PersistableBundle::putDoubleVector(const String16& key, const vector<double>& value) {
erase(key);
mDoubleVectorMap[key] = value;
}
void PersistableBundle::putStringVector(const String16& key, const vector<String16>& value) {
erase(key);
mStringVectorMap[key] = value;
}
void PersistableBundle::putPersistableBundle(const String16& key, const PersistableBundle& value) {
erase(key);
mPersistableBundleMap[key] = value;
}
bool PersistableBundle::getBoolean(const String16& key, bool* out) const {
return getValue(key, out, mBoolMap);
}
bool PersistableBundle::getInt(const String16& key, int32_t* out) const {
return getValue(key, out, mIntMap);
}
bool PersistableBundle::getLong(const String16& key, int64_t* out) const {
return getValue(key, out, mLongMap);
}
bool PersistableBundle::getDouble(const String16& key, double* out) const {
return getValue(key, out, mDoubleMap);
}
bool PersistableBundle::getString(const String16& key, String16* out) const {
return getValue(key, out, mStringMap);
}
bool PersistableBundle::getBooleanVector(const String16& key, vector<bool>* out) const {
return getValue(key, out, mBoolVectorMap);
}
bool PersistableBundle::getIntVector(const String16& key, vector<int32_t>* out) const {
return getValue(key, out, mIntVectorMap);
}
bool PersistableBundle::getLongVector(const String16& key, vector<int64_t>* out) const {
return getValue(key, out, mLongVectorMap);
}
bool PersistableBundle::getDoubleVector(const String16& key, vector<double>* out) const {
return getValue(key, out, mDoubleVectorMap);
}
bool PersistableBundle::getStringVector(const String16& key, vector<String16>* out) const {
return getValue(key, out, mStringVectorMap);
}
bool PersistableBundle::getPersistableBundle(const String16& key, PersistableBundle* out) const {
return getValue(key, out, mPersistableBundleMap);
}
set<String16> PersistableBundle::getBooleanKeys() const {
return getKeys(mBoolMap);
}
set<String16> PersistableBundle::getIntKeys() const {
return getKeys(mIntMap);
}
set<String16> PersistableBundle::getLongKeys() const {
return getKeys(mLongMap);
}
set<String16> PersistableBundle::getDoubleKeys() const {
return getKeys(mDoubleMap);
}
set<String16> PersistableBundle::getStringKeys() const {
return getKeys(mStringMap);
}
set<String16> PersistableBundle::getBooleanVectorKeys() const {
return getKeys(mBoolVectorMap);
}
set<String16> PersistableBundle::getIntVectorKeys() const {
return getKeys(mIntVectorMap);
}
set<String16> PersistableBundle::getLongVectorKeys() const {
return getKeys(mLongVectorMap);
}
set<String16> PersistableBundle::getDoubleVectorKeys() const {
return getKeys(mDoubleVectorMap);
}
set<String16> PersistableBundle::getStringVectorKeys() const {
return getKeys(mStringVectorMap);
}
set<String16> PersistableBundle::getPersistableBundleKeys() const {
return getKeys(mPersistableBundleMap);
}
status_t PersistableBundle::writeToParcelInner(Parcel* parcel) const {
/*
* To keep this implementation in sync with writeArrayMapInternal() in
* frameworks/base/core/java/android/os/Parcel.java, the number of key
* value pairs must be written into the parcel before writing the key-value
* pairs themselves.
*/
size_t num_entries = size();
if (num_entries > std::numeric_limits<int32_t>::max()) {
ALOGE("The size of this PersistableBundle (%zu) too large to store in 32-bit signed int",
num_entries);
return BAD_VALUE;
}
RETURN_IF_FAILED(parcel->writeInt32(static_cast<int32_t>(num_entries)));
for (const auto& key_val_pair : mBoolMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_BOOLEAN));
RETURN_IF_FAILED(parcel->writeBool(key_val_pair.second));
}
for (const auto& key_val_pair : mIntMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_INTEGER));
RETURN_IF_FAILED(parcel->writeInt32(key_val_pair.second));
}
for (const auto& key_val_pair : mLongMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_LONG));
RETURN_IF_FAILED(parcel->writeInt64(key_val_pair.second));
}
for (const auto& key_val_pair : mDoubleMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_DOUBLE));
RETURN_IF_FAILED(parcel->writeDouble(key_val_pair.second));
}
for (const auto& key_val_pair : mStringMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_STRING));
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.second));
}
for (const auto& key_val_pair : mBoolVectorMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_BOOLEANARRAY));
RETURN_IF_FAILED(parcel->writeBoolVector(key_val_pair.second));
}
for (const auto& key_val_pair : mIntVectorMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_INTARRAY));
RETURN_IF_FAILED(parcel->writeInt32Vector(key_val_pair.second));
}
for (const auto& key_val_pair : mLongVectorMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_LONGARRAY));
RETURN_IF_FAILED(parcel->writeInt64Vector(key_val_pair.second));
}
for (const auto& key_val_pair : mDoubleVectorMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_DOUBLEARRAY));
RETURN_IF_FAILED(parcel->writeDoubleVector(key_val_pair.second));
}
for (const auto& key_val_pair : mStringVectorMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_STRINGARRAY));
RETURN_IF_FAILED(parcel->writeString16Vector(key_val_pair.second));
}
for (const auto& key_val_pair : mPersistableBundleMap) {
RETURN_IF_FAILED(parcel->writeString16(key_val_pair.first));
RETURN_IF_FAILED(parcel->writeInt32(VAL_PERSISTABLEBUNDLE));
RETURN_IF_FAILED(key_val_pair.second.writeToParcel(parcel));
}
return NO_ERROR;
}
status_t PersistableBundle::readFromParcelInner(const Parcel* parcel, size_t length) {
/*
* Note: we don't actually use length for anything other than an empty PersistableBundle
* check, since we do not actually need to copy in an entire Parcel, unlike in the Java
* implementation.
*/
if (length == 0) {
// Empty PersistableBundle or end of data.
return NO_ERROR;
}
int32_t magic;
RETURN_IF_FAILED(parcel->readInt32(&magic));
if (magic != BUNDLE_MAGIC && magic != BUNDLE_MAGIC_NATIVE) {
ALOGE("Bad magic number for PersistableBundle: 0x%08x", magic);
return BAD_VALUE;
}
/*
* To keep this implementation in sync with unparcel() in
* frameworks/base/core/java/android/os/BaseBundle.java, the number of
* key-value pairs must be read from the parcel before reading the key-value
* pairs themselves.
*/
int32_t num_entries;
RETURN_IF_FAILED(parcel->readInt32(&num_entries));
for (; num_entries > 0; --num_entries) {
String16 key;
int32_t value_type;
RETURN_IF_FAILED(parcel->readString16(&key));
RETURN_IF_FAILED(parcel->readInt32(&value_type));
/*
* We assume that both the C++ and Java APIs ensure that all keys in a PersistableBundle
* are unique.
*/
switch (value_type) {
case VAL_STRING: {
RETURN_IF_FAILED(parcel->readString16(&mStringMap[key]));
break;
}
case VAL_INTEGER: {
RETURN_IF_FAILED(parcel->readInt32(&mIntMap[key]));
break;
}
case VAL_LONG: {
RETURN_IF_FAILED(parcel->readInt64(&mLongMap[key]));
break;
}
case VAL_DOUBLE: {
RETURN_IF_FAILED(parcel->readDouble(&mDoubleMap[key]));
break;
}
case VAL_BOOLEAN: {
RETURN_IF_FAILED(parcel->readBool(&mBoolMap[key]));
break;
}
case VAL_STRINGARRAY: {
RETURN_IF_FAILED(parcel->readString16Vector(&mStringVectorMap[key]));
break;
}
case VAL_INTARRAY: {
RETURN_IF_FAILED(parcel->readInt32Vector(&mIntVectorMap[key]));
break;
}
case VAL_LONGARRAY: {
RETURN_IF_FAILED(parcel->readInt64Vector(&mLongVectorMap[key]));
break;
}
case VAL_BOOLEANARRAY: {
RETURN_IF_FAILED(parcel->readBoolVector(&mBoolVectorMap[key]));
break;
}
case VAL_PERSISTABLEBUNDLE: {
RETURN_IF_FAILED(mPersistableBundleMap[key].readFromParcel(parcel));
break;
}
case VAL_DOUBLEARRAY: {
RETURN_IF_FAILED(parcel->readDoubleVector(&mDoubleVectorMap[key]));
break;
}
default: {
ALOGE("Unrecognized type: %d", value_type);
return BAD_TYPE;
break;
}
}
}
return NO_ERROR;
}
} // namespace os
} // namespace android