800 lines
30 KiB
C++
800 lines
30 KiB
C++
/*
|
|
* Copyright (C) 2005 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.
|
|
*/
|
|
|
|
#ifndef ANDROID_PARCEL_H
|
|
#define ANDROID_PARCEL_H
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include <cutils/native_handle.h>
|
|
#include <nativehelper/ScopedFd.h>
|
|
#include <utils/Errors.h>
|
|
#include <utils/RefBase.h>
|
|
#include <utils/String16.h>
|
|
#include <utils/Vector.h>
|
|
#include <utils/Flattenable.h>
|
|
#include <linux/binder.h>
|
|
|
|
#include <binder/IInterface.h>
|
|
#include <binder/Parcelable.h>
|
|
|
|
// ---------------------------------------------------------------------------
|
|
namespace android {
|
|
|
|
template <typename T> class Flattenable;
|
|
template <typename T> class LightFlattenable;
|
|
class IBinder;
|
|
class IPCThreadState;
|
|
class ProcessState;
|
|
class String8;
|
|
class TextOutput;
|
|
|
|
class Parcel {
|
|
friend class IPCThreadState;
|
|
public:
|
|
class ReadableBlob;
|
|
class WritableBlob;
|
|
|
|
Parcel();
|
|
~Parcel();
|
|
|
|
const uint8_t* data() const;
|
|
size_t dataSize() const;
|
|
size_t dataAvail() const;
|
|
size_t dataPosition() const;
|
|
size_t dataCapacity() const;
|
|
|
|
status_t setDataSize(size_t size);
|
|
void setDataPosition(size_t pos) const;
|
|
status_t setDataCapacity(size_t size);
|
|
|
|
status_t setData(const uint8_t* buffer, size_t len);
|
|
|
|
status_t appendFrom(const Parcel *parcel,
|
|
size_t start, size_t len);
|
|
|
|
bool allowFds() const;
|
|
bool pushAllowFds(bool allowFds);
|
|
void restoreAllowFds(bool lastValue);
|
|
|
|
bool hasFileDescriptors() const;
|
|
|
|
// Writes the RPC header.
|
|
status_t writeInterfaceToken(const String16& interface);
|
|
|
|
// Parses the RPC header, returning true if the interface name
|
|
// in the header matches the expected interface from the caller.
|
|
//
|
|
// Additionally, enforceInterface does part of the work of
|
|
// propagating the StrictMode policy mask, populating the current
|
|
// IPCThreadState, which as an optimization may optionally be
|
|
// passed in.
|
|
bool enforceInterface(const String16& interface,
|
|
IPCThreadState* threadState = NULL) const;
|
|
bool checkInterface(IBinder*) const;
|
|
|
|
void freeData();
|
|
|
|
private:
|
|
const binder_size_t* objects() const;
|
|
|
|
public:
|
|
size_t objectsCount() const;
|
|
|
|
status_t errorCheck() const;
|
|
void setError(status_t err);
|
|
|
|
status_t write(const void* data, size_t len);
|
|
void* writeInplace(size_t len);
|
|
status_t writeUnpadded(const void* data, size_t len);
|
|
status_t writeInt32(int32_t val);
|
|
status_t writeUint32(uint32_t val);
|
|
status_t writeInt64(int64_t val);
|
|
status_t writeUint64(uint64_t val);
|
|
status_t writeFloat(float val);
|
|
status_t writeDouble(double val);
|
|
status_t writeCString(const char* str);
|
|
status_t writeString8(const String8& str);
|
|
status_t writeString16(const String16& str);
|
|
status_t writeString16(const std::unique_ptr<String16>& str);
|
|
status_t writeString16(const char16_t* str, size_t len);
|
|
status_t writeStrongBinder(const sp<IBinder>& val);
|
|
status_t writeWeakBinder(const wp<IBinder>& val);
|
|
status_t writeInt32Array(size_t len, const int32_t *val);
|
|
status_t writeByteArray(size_t len, const uint8_t *val);
|
|
status_t writeBool(bool val);
|
|
status_t writeChar(char16_t val);
|
|
status_t writeByte(int8_t val);
|
|
|
|
// Take a UTF8 encoded string, convert to UTF16, write it to the parcel.
|
|
status_t writeUtf8AsUtf16(const std::string& str);
|
|
status_t writeUtf8AsUtf16(const std::unique_ptr<std::string>& str);
|
|
|
|
status_t writeByteVector(const std::unique_ptr<std::vector<int8_t>>& val);
|
|
status_t writeByteVector(const std::vector<int8_t>& val);
|
|
status_t writeByteVector(const std::unique_ptr<std::vector<uint8_t>>& val);
|
|
status_t writeByteVector(const std::vector<uint8_t>& val);
|
|
status_t writeInt32Vector(const std::unique_ptr<std::vector<int32_t>>& val);
|
|
status_t writeInt32Vector(const std::vector<int32_t>& val);
|
|
status_t writeInt64Vector(const std::unique_ptr<std::vector<int64_t>>& val);
|
|
status_t writeInt64Vector(const std::vector<int64_t>& val);
|
|
status_t writeFloatVector(const std::unique_ptr<std::vector<float>>& val);
|
|
status_t writeFloatVector(const std::vector<float>& val);
|
|
status_t writeDoubleVector(const std::unique_ptr<std::vector<double>>& val);
|
|
status_t writeDoubleVector(const std::vector<double>& val);
|
|
status_t writeBoolVector(const std::unique_ptr<std::vector<bool>>& val);
|
|
status_t writeBoolVector(const std::vector<bool>& val);
|
|
status_t writeCharVector(const std::unique_ptr<std::vector<char16_t>>& val);
|
|
status_t writeCharVector(const std::vector<char16_t>& val);
|
|
status_t writeString16Vector(
|
|
const std::unique_ptr<std::vector<std::unique_ptr<String16>>>& val);
|
|
status_t writeString16Vector(const std::vector<String16>& val);
|
|
status_t writeUtf8VectorAsUtf16Vector(
|
|
const std::unique_ptr<std::vector<std::unique_ptr<std::string>>>& val);
|
|
status_t writeUtf8VectorAsUtf16Vector(const std::vector<std::string>& val);
|
|
|
|
status_t writeStrongBinderVector(const std::unique_ptr<std::vector<sp<IBinder>>>& val);
|
|
status_t writeStrongBinderVector(const std::vector<sp<IBinder>>& val);
|
|
|
|
template<typename T>
|
|
status_t writeParcelableVector(const std::unique_ptr<std::vector<std::unique_ptr<T>>>& val);
|
|
template<typename T>
|
|
status_t writeParcelableVector(const std::vector<T>& val);
|
|
|
|
template<typename T>
|
|
status_t writeNullableParcelable(const std::unique_ptr<T>& parcelable);
|
|
|
|
status_t writeParcelable(const Parcelable& parcelable);
|
|
|
|
template<typename T>
|
|
status_t write(const Flattenable<T>& val);
|
|
|
|
template<typename T>
|
|
status_t write(const LightFlattenable<T>& val);
|
|
|
|
|
|
// Place a native_handle into the parcel (the native_handle's file-
|
|
// descriptors are dup'ed, so it is safe to delete the native_handle
|
|
// when this function returns).
|
|
// Doesn't take ownership of the native_handle.
|
|
status_t writeNativeHandle(const native_handle* handle);
|
|
|
|
// Place a file descriptor into the parcel. The given fd must remain
|
|
// valid for the lifetime of the parcel.
|
|
// The Parcel does not take ownership of the given fd unless you ask it to.
|
|
status_t writeFileDescriptor(int fd, bool takeOwnership = false);
|
|
|
|
// Place a file descriptor into the parcel. A dup of the fd is made, which
|
|
// will be closed once the parcel is destroyed.
|
|
status_t writeDupFileDescriptor(int fd);
|
|
|
|
// Place a file descriptor into the parcel. This will not affect the
|
|
// semantics of the smart file descriptor. A new descriptor will be
|
|
// created, and will be closed when the parcel is destroyed.
|
|
status_t writeUniqueFileDescriptor(
|
|
const ScopedFd& fd);
|
|
|
|
// Place a vector of file desciptors into the parcel. Each descriptor is
|
|
// dup'd as in writeDupFileDescriptor
|
|
status_t writeUniqueFileDescriptorVector(
|
|
const std::unique_ptr<std::vector<ScopedFd>>& val);
|
|
status_t writeUniqueFileDescriptorVector(
|
|
const std::vector<ScopedFd>& val);
|
|
|
|
// Writes a blob to the parcel.
|
|
// If the blob is small, then it is stored in-place, otherwise it is
|
|
// transferred by way of an anonymous shared memory region. Prefer sending
|
|
// immutable blobs if possible since they may be subsequently transferred between
|
|
// processes without further copying whereas mutable blobs always need to be copied.
|
|
// The caller should call release() on the blob after writing its contents.
|
|
status_t writeBlob(size_t len, bool mutableCopy, WritableBlob* outBlob);
|
|
|
|
// Write an existing immutable blob file descriptor to the parcel.
|
|
// This allows the client to send the same blob to multiple processes
|
|
// as long as it keeps a dup of the blob file descriptor handy for later.
|
|
status_t writeDupImmutableBlobFileDescriptor(int fd);
|
|
|
|
status_t writeObject(const flat_binder_object& val, bool nullMetaData);
|
|
|
|
// Like Parcel.java's writeNoException(). Just writes a zero int32.
|
|
// Currently the native implementation doesn't do any of the StrictMode
|
|
// stack gathering and serialization that the Java implementation does.
|
|
status_t writeNoException();
|
|
|
|
void remove(size_t start, size_t amt);
|
|
|
|
status_t read(void* outData, size_t len) const;
|
|
const void* readInplace(size_t len) const;
|
|
int32_t readInt32() const;
|
|
status_t readInt32(int32_t *pArg) const;
|
|
uint32_t readUint32() const;
|
|
status_t readUint32(uint32_t *pArg) const;
|
|
int64_t readInt64() const;
|
|
status_t readInt64(int64_t *pArg) const;
|
|
uint64_t readUint64() const;
|
|
status_t readUint64(uint64_t *pArg) const;
|
|
float readFloat() const;
|
|
status_t readFloat(float *pArg) const;
|
|
double readDouble() const;
|
|
status_t readDouble(double *pArg) const;
|
|
intptr_t readIntPtr() const;
|
|
status_t readIntPtr(intptr_t *pArg) const;
|
|
bool readBool() const;
|
|
status_t readBool(bool *pArg) const;
|
|
char16_t readChar() const;
|
|
status_t readChar(char16_t *pArg) const;
|
|
int8_t readByte() const;
|
|
status_t readByte(int8_t *pArg) const;
|
|
|
|
// Read a UTF16 encoded string, convert to UTF8
|
|
status_t readUtf8FromUtf16(std::string* str) const;
|
|
status_t readUtf8FromUtf16(std::unique_ptr<std::string>* str) const;
|
|
|
|
const char* readCString() const;
|
|
String8 readString8() const;
|
|
String16 readString16() const;
|
|
status_t readString16(String16* pArg) const;
|
|
status_t readString16(std::unique_ptr<String16>* pArg) const;
|
|
const char16_t* readString16Inplace(size_t* outLen) const;
|
|
sp<IBinder> readStrongBinder() const;
|
|
status_t readStrongBinder(sp<IBinder>* val) const;
|
|
wp<IBinder> readWeakBinder() const;
|
|
|
|
template<typename T>
|
|
status_t readParcelableVector(
|
|
std::unique_ptr<std::vector<std::unique_ptr<T>>>* val) const;
|
|
template<typename T>
|
|
status_t readParcelableVector(std::vector<T>* val) const;
|
|
|
|
status_t readParcelable(Parcelable* parcelable) const;
|
|
|
|
template<typename T>
|
|
status_t readParcelable(std::unique_ptr<T>* parcelable) const;
|
|
|
|
template<typename T>
|
|
status_t readStrongBinder(sp<T>* val) const;
|
|
|
|
status_t readStrongBinderVector(std::unique_ptr<std::vector<sp<IBinder>>>* val) const;
|
|
status_t readStrongBinderVector(std::vector<sp<IBinder>>* val) const;
|
|
|
|
status_t readByteVector(std::unique_ptr<std::vector<int8_t>>* val) const;
|
|
status_t readByteVector(std::vector<int8_t>* val) const;
|
|
status_t readByteVector(std::unique_ptr<std::vector<uint8_t>>* val) const;
|
|
status_t readByteVector(std::vector<uint8_t>* val) const;
|
|
status_t readInt32Vector(std::unique_ptr<std::vector<int32_t>>* val) const;
|
|
status_t readInt32Vector(std::vector<int32_t>* val) const;
|
|
status_t readInt64Vector(std::unique_ptr<std::vector<int64_t>>* val) const;
|
|
status_t readInt64Vector(std::vector<int64_t>* val) const;
|
|
status_t readFloatVector(std::unique_ptr<std::vector<float>>* val) const;
|
|
status_t readFloatVector(std::vector<float>* val) const;
|
|
status_t readDoubleVector(std::unique_ptr<std::vector<double>>* val) const;
|
|
status_t readDoubleVector(std::vector<double>* val) const;
|
|
status_t readBoolVector(std::unique_ptr<std::vector<bool>>* val) const;
|
|
status_t readBoolVector(std::vector<bool>* val) const;
|
|
status_t readCharVector(std::unique_ptr<std::vector<char16_t>>* val) const;
|
|
status_t readCharVector(std::vector<char16_t>* val) const;
|
|
status_t readString16Vector(
|
|
std::unique_ptr<std::vector<std::unique_ptr<String16>>>* val) const;
|
|
status_t readString16Vector(std::vector<String16>* val) const;
|
|
status_t readUtf8VectorFromUtf16Vector(
|
|
std::unique_ptr<std::vector<std::unique_ptr<std::string>>>* val) const;
|
|
status_t readUtf8VectorFromUtf16Vector(std::vector<std::string>* val) const;
|
|
|
|
template<typename T>
|
|
status_t read(Flattenable<T>& val) const;
|
|
|
|
template<typename T>
|
|
status_t read(LightFlattenable<T>& val) const;
|
|
|
|
// Like Parcel.java's readExceptionCode(). Reads the first int32
|
|
// off of a Parcel's header, returning 0 or the negative error
|
|
// code on exceptions, but also deals with skipping over rich
|
|
// response headers. Callers should use this to read & parse the
|
|
// response headers rather than doing it by hand.
|
|
int32_t readExceptionCode() const;
|
|
|
|
// Retrieve native_handle from the parcel. This returns a copy of the
|
|
// parcel's native_handle (the caller takes ownership). The caller
|
|
// must free the native_handle with native_handle_close() and
|
|
// native_handle_delete().
|
|
native_handle* readNativeHandle() const;
|
|
|
|
|
|
// Retrieve a file descriptor from the parcel. This returns the raw fd
|
|
// in the parcel, which you do not own -- use dup() to get your own copy.
|
|
int readFileDescriptor() const;
|
|
|
|
// Retrieve a smart file descriptor from the parcel.
|
|
status_t readUniqueFileDescriptor(
|
|
ScopedFd* val) const;
|
|
|
|
|
|
// Retrieve a vector of smart file descriptors from the parcel.
|
|
status_t readUniqueFileDescriptorVector(
|
|
std::unique_ptr<std::vector<ScopedFd>>* val) const;
|
|
status_t readUniqueFileDescriptorVector(
|
|
std::vector<ScopedFd>* val) const;
|
|
|
|
// Reads a blob from the parcel.
|
|
// The caller should call release() on the blob after reading its contents.
|
|
status_t readBlob(size_t len, ReadableBlob* outBlob) const;
|
|
|
|
const flat_binder_object* readObject(bool nullMetaData) const;
|
|
|
|
// Explicitly close all file descriptors in the parcel.
|
|
void closeFileDescriptors();
|
|
|
|
// Debugging: get metrics on current allocations.
|
|
static size_t getGlobalAllocSize();
|
|
static size_t getGlobalAllocCount();
|
|
|
|
private:
|
|
typedef void (*release_func)(Parcel* parcel,
|
|
const uint8_t* data, size_t dataSize,
|
|
const binder_size_t* objects, size_t objectsSize,
|
|
void* cookie);
|
|
|
|
uintptr_t ipcData() const;
|
|
size_t ipcDataSize() const;
|
|
uintptr_t ipcObjects() const;
|
|
size_t ipcObjectsCount() const;
|
|
void ipcSetDataReference(const uint8_t* data, size_t dataSize,
|
|
const binder_size_t* objects, size_t objectsCount,
|
|
release_func relFunc, void* relCookie);
|
|
|
|
public:
|
|
void print(TextOutput& to, uint32_t flags = 0) const;
|
|
|
|
private:
|
|
Parcel(const Parcel& o);
|
|
Parcel& operator=(const Parcel& o);
|
|
|
|
status_t finishWrite(size_t len);
|
|
void releaseObjects();
|
|
void acquireObjects();
|
|
status_t growData(size_t len);
|
|
status_t restartWrite(size_t desired);
|
|
status_t continueWrite(size_t desired);
|
|
status_t writePointer(uintptr_t val);
|
|
status_t readPointer(uintptr_t *pArg) const;
|
|
uintptr_t readPointer() const;
|
|
void freeDataNoInit();
|
|
void initState();
|
|
void scanForFds() const;
|
|
|
|
template<class T>
|
|
status_t readAligned(T *pArg) const;
|
|
|
|
template<class T> T readAligned() const;
|
|
|
|
template<class T>
|
|
status_t writeAligned(T val);
|
|
|
|
status_t writeRawNullableParcelable(const Parcelable*
|
|
parcelable);
|
|
|
|
template<typename T, typename U>
|
|
status_t unsafeReadTypedVector(std::vector<T>* val,
|
|
status_t(Parcel::*read_func)(U*) const) const;
|
|
template<typename T>
|
|
status_t readNullableTypedVector(std::unique_ptr<std::vector<T>>* val,
|
|
status_t(Parcel::*read_func)(T*) const) const;
|
|
template<typename T>
|
|
status_t readTypedVector(std::vector<T>* val,
|
|
status_t(Parcel::*read_func)(T*) const) const;
|
|
template<typename T, typename U>
|
|
status_t unsafeWriteTypedVector(const std::vector<T>& val,
|
|
status_t(Parcel::*write_func)(U));
|
|
template<typename T>
|
|
status_t writeNullableTypedVector(const std::unique_ptr<std::vector<T>>& val,
|
|
status_t(Parcel::*write_func)(const T&));
|
|
template<typename T>
|
|
status_t writeNullableTypedVector(const std::unique_ptr<std::vector<T>>& val,
|
|
status_t(Parcel::*write_func)(T));
|
|
template<typename T>
|
|
status_t writeTypedVector(const std::vector<T>& val,
|
|
status_t(Parcel::*write_func)(const T&));
|
|
template<typename T>
|
|
status_t writeTypedVector(const std::vector<T>& val,
|
|
status_t(Parcel::*write_func)(T));
|
|
|
|
status_t mError;
|
|
uint8_t* mData;
|
|
size_t mDataSize;
|
|
size_t mDataCapacity;
|
|
mutable size_t mDataPos;
|
|
binder_size_t* mObjects;
|
|
size_t mObjectsSize;
|
|
size_t mObjectsCapacity;
|
|
mutable size_t mNextObjectHint;
|
|
|
|
mutable bool mFdsKnown;
|
|
mutable bool mHasFds;
|
|
bool mAllowFds;
|
|
|
|
release_func mOwner;
|
|
void* mOwnerCookie;
|
|
|
|
class Blob {
|
|
public:
|
|
Blob();
|
|
~Blob();
|
|
|
|
void clear();
|
|
void release();
|
|
inline size_t size() const { return mSize; }
|
|
inline int fd() const { return mFd; };
|
|
inline bool isMutable() const { return mMutable; }
|
|
|
|
protected:
|
|
void init(int fd, void* data, size_t size, bool isMutable);
|
|
|
|
int mFd; // owned by parcel so not closed when released
|
|
void* mData;
|
|
size_t mSize;
|
|
bool mMutable;
|
|
};
|
|
|
|
class FlattenableHelperInterface {
|
|
protected:
|
|
~FlattenableHelperInterface() { }
|
|
public:
|
|
virtual size_t getFlattenedSize() const = 0;
|
|
virtual size_t getFdCount() const = 0;
|
|
virtual status_t flatten(void* buffer, size_t size, int* fds, size_t count) const = 0;
|
|
virtual status_t unflatten(void const* buffer, size_t size, int const* fds, size_t count) = 0;
|
|
};
|
|
|
|
template<typename T>
|
|
class FlattenableHelper : public FlattenableHelperInterface {
|
|
friend class Parcel;
|
|
const Flattenable<T>& val;
|
|
explicit FlattenableHelper(const Flattenable<T>& val) : val(val) { }
|
|
|
|
public:
|
|
virtual size_t getFlattenedSize() const {
|
|
return val.getFlattenedSize();
|
|
}
|
|
virtual size_t getFdCount() const {
|
|
return val.getFdCount();
|
|
}
|
|
virtual status_t flatten(void* buffer, size_t size, int* fds, size_t count) const {
|
|
return val.flatten(buffer, size, fds, count);
|
|
}
|
|
virtual status_t unflatten(void const* buffer, size_t size, int const* fds, size_t count) {
|
|
return const_cast<Flattenable<T>&>(val).unflatten(buffer, size, fds, count);
|
|
}
|
|
};
|
|
status_t write(const FlattenableHelperInterface& val);
|
|
status_t read(FlattenableHelperInterface& val) const;
|
|
|
|
public:
|
|
class ReadableBlob : public Blob {
|
|
friend class Parcel;
|
|
public:
|
|
inline const void* data() const { return mData; }
|
|
inline void* mutableData() { return isMutable() ? mData : NULL; }
|
|
};
|
|
|
|
class WritableBlob : public Blob {
|
|
friend class Parcel;
|
|
public:
|
|
inline void* data() { return mData; }
|
|
};
|
|
|
|
#ifndef DISABLE_ASHMEM_TRACKING
|
|
private:
|
|
size_t mOpenAshmemSize;
|
|
#endif
|
|
|
|
public:
|
|
// TODO: Remove once ABI can be changed.
|
|
size_t getBlobAshmemSize() const;
|
|
size_t getOpenAshmemSize() const;
|
|
};
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
template<typename T>
|
|
status_t Parcel::write(const Flattenable<T>& val) {
|
|
const FlattenableHelper<T> helper(val);
|
|
return write(helper);
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::write(const LightFlattenable<T>& val) {
|
|
size_t size(val.getFlattenedSize());
|
|
if (!val.isFixedSize()) {
|
|
status_t err = writeInt32(size);
|
|
if (err != NO_ERROR) {
|
|
return err;
|
|
}
|
|
}
|
|
if (size) {
|
|
void* buffer = writeInplace(size);
|
|
if (buffer == NULL)
|
|
return NO_MEMORY;
|
|
return val.flatten(buffer, size);
|
|
}
|
|
return NO_ERROR;
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::read(Flattenable<T>& val) const {
|
|
FlattenableHelper<T> helper(val);
|
|
return read(helper);
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::read(LightFlattenable<T>& val) const {
|
|
size_t size;
|
|
if (val.isFixedSize()) {
|
|
size = val.getFlattenedSize();
|
|
} else {
|
|
int32_t s;
|
|
status_t err = readInt32(&s);
|
|
if (err != NO_ERROR) {
|
|
return err;
|
|
}
|
|
size = s;
|
|
}
|
|
if (size) {
|
|
void const* buffer = readInplace(size);
|
|
return buffer == NULL ? NO_MEMORY :
|
|
val.unflatten(buffer, size);
|
|
}
|
|
return NO_ERROR;
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::readStrongBinder(sp<T>* val) const {
|
|
sp<IBinder> tmp;
|
|
status_t ret = readStrongBinder(&tmp);
|
|
|
|
if (ret == OK) {
|
|
*val = interface_cast<T>(tmp);
|
|
|
|
if (val->get() == nullptr) {
|
|
return UNKNOWN_ERROR;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
template<typename T, typename U>
|
|
status_t Parcel::unsafeReadTypedVector(
|
|
std::vector<T>* val,
|
|
status_t(Parcel::*read_func)(U*) const) const {
|
|
int32_t size;
|
|
status_t status = this->readInt32(&size);
|
|
|
|
if (status != OK) {
|
|
return status;
|
|
}
|
|
|
|
if (size < 0) {
|
|
return UNEXPECTED_NULL;
|
|
}
|
|
|
|
if (val->max_size() < size) {
|
|
return NO_MEMORY;
|
|
}
|
|
|
|
val->resize(size);
|
|
|
|
if (val->size() < size) {
|
|
return NO_MEMORY;
|
|
}
|
|
|
|
for (auto& v: *val) {
|
|
status = (this->*read_func)(&v);
|
|
|
|
if (status != OK) {
|
|
return status;
|
|
}
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::readTypedVector(std::vector<T>* val,
|
|
status_t(Parcel::*read_func)(T*) const) const {
|
|
return unsafeReadTypedVector(val, read_func);
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::readNullableTypedVector(std::unique_ptr<std::vector<T>>* val,
|
|
status_t(Parcel::*read_func)(T*) const) const {
|
|
const int32_t start = dataPosition();
|
|
int32_t size;
|
|
status_t status = readInt32(&size);
|
|
val->reset();
|
|
|
|
if (status != OK || size < 0) {
|
|
return status;
|
|
}
|
|
|
|
setDataPosition(start);
|
|
val->reset(new std::vector<T>());
|
|
|
|
status = unsafeReadTypedVector(val->get(), read_func);
|
|
|
|
if (status != OK) {
|
|
val->reset();
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
template<typename T, typename U>
|
|
status_t Parcel::unsafeWriteTypedVector(const std::vector<T>& val,
|
|
status_t(Parcel::*write_func)(U)) {
|
|
if (val.size() > std::numeric_limits<int32_t>::max()) {
|
|
return BAD_VALUE;
|
|
}
|
|
|
|
status_t status = this->writeInt32(val.size());
|
|
|
|
if (status != OK) {
|
|
return status;
|
|
}
|
|
|
|
for (const auto& item : val) {
|
|
status = (this->*write_func)(item);
|
|
|
|
if (status != OK) {
|
|
return status;
|
|
}
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::writeTypedVector(const std::vector<T>& val,
|
|
status_t(Parcel::*write_func)(const T&)) {
|
|
return unsafeWriteTypedVector(val, write_func);
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::writeTypedVector(const std::vector<T>& val,
|
|
status_t(Parcel::*write_func)(T)) {
|
|
return unsafeWriteTypedVector(val, write_func);
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::writeNullableTypedVector(const std::unique_ptr<std::vector<T>>& val,
|
|
status_t(Parcel::*write_func)(const T&)) {
|
|
if (val.get() == nullptr) {
|
|
return this->writeInt32(-1);
|
|
}
|
|
|
|
return unsafeWriteTypedVector(*val, write_func);
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::writeNullableTypedVector(const std::unique_ptr<std::vector<T>>& val,
|
|
status_t(Parcel::*write_func)(T)) {
|
|
if (val.get() == nullptr) {
|
|
return this->writeInt32(-1);
|
|
}
|
|
|
|
return unsafeWriteTypedVector(*val, write_func);
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::readParcelableVector(std::vector<T>* val) const {
|
|
return unsafeReadTypedVector<T, Parcelable>(val, &Parcel::readParcelable);
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::readParcelableVector(std::unique_ptr<std::vector<std::unique_ptr<T>>>* val) const {
|
|
const int32_t start = dataPosition();
|
|
int32_t size;
|
|
status_t status = readInt32(&size);
|
|
val->reset();
|
|
|
|
if (status != OK || size < 0) {
|
|
return status;
|
|
}
|
|
|
|
setDataPosition(start);
|
|
val->reset(new std::vector<std::unique_ptr<T>>());
|
|
|
|
status = unsafeReadTypedVector(val->get(), &Parcel::readParcelable<T>);
|
|
|
|
if (status != OK) {
|
|
val->reset();
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::readParcelable(std::unique_ptr<T>* parcelable) const {
|
|
const int32_t start = dataPosition();
|
|
int32_t present;
|
|
status_t status = readInt32(&present);
|
|
parcelable->reset();
|
|
|
|
if (status != OK || !present) {
|
|
return status;
|
|
}
|
|
|
|
setDataPosition(start);
|
|
parcelable->reset(new T());
|
|
|
|
status = readParcelable(parcelable->get());
|
|
|
|
if (status != OK) {
|
|
parcelable->reset();
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::writeNullableParcelable(const std::unique_ptr<T>& parcelable) {
|
|
return writeRawNullableParcelable(parcelable.get());
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::writeParcelableVector(const std::vector<T>& val) {
|
|
return unsafeWriteTypedVector<T,const Parcelable&>(val, &Parcel::writeParcelable);
|
|
}
|
|
|
|
template<typename T>
|
|
status_t Parcel::writeParcelableVector(const std::unique_ptr<std::vector<std::unique_ptr<T>>>& val) {
|
|
if (val.get() == nullptr) {
|
|
return this->writeInt32(-1);
|
|
}
|
|
|
|
return unsafeWriteTypedVector(*val, &Parcel::writeParcelable);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
inline TextOutput& operator<<(TextOutput& to, const Parcel& parcel)
|
|
{
|
|
parcel.print(to);
|
|
return to;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
// Generic acquire and release of objects.
|
|
void acquire_object(const sp<ProcessState>& proc,
|
|
const flat_binder_object& obj, const void* who);
|
|
void release_object(const sp<ProcessState>& proc,
|
|
const flat_binder_object& obj, const void* who);
|
|
|
|
void flatten_binder(const sp<ProcessState>& proc,
|
|
const sp<IBinder>& binder, flat_binder_object* out);
|
|
void flatten_binder(const sp<ProcessState>& proc,
|
|
const wp<IBinder>& binder, flat_binder_object* out);
|
|
status_t unflatten_binder(const sp<ProcessState>& proc,
|
|
const flat_binder_object& flat, sp<IBinder>* out);
|
|
status_t unflatten_binder(const sp<ProcessState>& proc,
|
|
const flat_binder_object& flat, wp<IBinder>* out);
|
|
|
|
}; // namespace android
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
#endif // ANDROID_PARCEL_H
|