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ipc_message_utils.cc
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ipc/ipc_message_utils.h"
#include <stddef.h>
#include <stdint.h>
#include "base/files/file_path.h"
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/notreached.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "base/unguessable_token.h"
#include "base/values.h"
#include "build/build_config.h"
#include "ipc/ipc_channel_handle.h"
#include "ipc/ipc_message_attachment.h"
#include "ipc/ipc_message_attachment_set.h"
#include "ipc/ipc_mojo_param_traits.h"
#if defined(OS_MAC)
#include "ipc/mach_port_mac.h"
#endif
#if defined(OS_WIN)
#include <tchar.h>
#include "ipc/handle_win.h"
#include "ipc/ipc_platform_file.h"
#elif defined(OS_POSIX) || defined(OS_FUCHSIA)
#include "base/file_descriptor_posix.h"
#include "ipc/ipc_platform_file_attachment_posix.h"
#endif
#if defined(OS_FUCHSIA)
#include "base/fuchsia/fuchsia_logging.h"
#include "ipc/handle_attachment_fuchsia.h"
#endif
#if defined(OS_ANDROID)
#include "base/android/scoped_hardware_buffer_handle.h"
#include "ipc/ipc_mojo_handle_attachment.h"
#include "mojo/public/cpp/system/message_pipe.h"
#include "mojo/public/cpp/system/scope_to_message_pipe.h"
#endif
namespace IPC {
namespace {
const int kMaxRecursionDepth = 200;
template<typename CharType>
void LogBytes(const std::vector<CharType>& data, std::string* out) {
#if defined(OS_WIN)
// Windows has a GUI for logging, which can handle arbitrary binary data.
for (size_t i = 0; i < data.size(); ++i)
out->push_back(data[i]);
#elif defined(OS_POSIX) || defined(OS_FUCHSIA)
// On POSIX, we log to stdout, which we assume can display ASCII.
static const size_t kMaxBytesToLog = 100;
for (size_t i = 0; i < std::min(data.size(), kMaxBytesToLog); ++i) {
if (isprint(data[i]))
out->push_back(data[i]);
else
out->append(
base::StringPrintf("[%02X]", static_cast<unsigned char>(data[i])));
}
if (data.size() > kMaxBytesToLog) {
out->append(base::StringPrintf(
" and %u more bytes",
static_cast<unsigned>(data.size() - kMaxBytesToLog)));
}
#endif
}
bool ReadValue(const base::Pickle* m,
base::PickleIterator* iter,
base::Value* value,
int recursion);
void WriteValue(base::Pickle* m, const base::Value* value, int recursion) {
bool result;
if (recursion > kMaxRecursionDepth) {
LOG(ERROR) << "Max recursion depth hit in WriteValue.";
return;
}
m->WriteInt(static_cast<int>(value->type()));
switch (value->type()) {
case base::Value::Type::NONE:
break;
case base::Value::Type::BOOLEAN: {
WriteParam(m, value->GetBool());
break;
}
case base::Value::Type::INTEGER: {
DCHECK(value->is_int());
WriteParam(m, value->GetInt());
break;
}
case base::Value::Type::DOUBLE: {
double val;
result = value->GetAsDouble(&val);
DCHECK(result);
WriteParam(m, val);
break;
}
case base::Value::Type::STRING: {
std::string val;
result = value->GetAsString(&val);
DCHECK(result);
WriteParam(m, val);
break;
}
case base::Value::Type::BINARY: {
m->WriteData(reinterpret_cast<const char*>(value->GetBlob().data()),
base::checked_cast<int>(value->GetBlob().size()));
break;
}
case base::Value::Type::DICTIONARY: {
const base::DictionaryValue* dict =
static_cast<const base::DictionaryValue*>(value);
WriteParam(m, base::checked_cast<int>(dict->DictSize()));
for (base::DictionaryValue::Iterator it(*dict); !it.IsAtEnd();
it.Advance()) {
WriteParam(m, it.key());
WriteValue(m, &it.value(), recursion + 1);
}
break;
}
case base::Value::Type::LIST: {
const base::ListValue* list = static_cast<const base::ListValue*>(value);
WriteParam(m, base::checked_cast<int>(list->GetSize()));
for (const auto& entry : list->GetList()) {
WriteValue(m, &entry, recursion + 1);
}
break;
}
}
}
// Helper for ReadValue that reads a DictionaryValue into a pre-allocated
// object.
bool ReadDictionaryValue(const base::Pickle* m,
base::PickleIterator* iter,
base::DictionaryValue* value,
int recursion) {
int size;
if (!ReadParam(m, iter, &size))
return false;
std::vector<base::Value::LegacyDictStorage::value_type> entries;
entries.resize(size);
for (auto& entry : entries) {
entry.second = std::make_unique<base::Value>();
if (!ReadParam(m, iter, &entry.first) ||
!ReadValue(m, iter, entry.second.get(), recursion + 1))
return false;
}
*value =
base::DictionaryValue(base::Value::LegacyDictStorage(std::move(entries)));
return true;
}
// Helper for ReadValue that reads a ReadListValue into a pre-allocated
// object.
bool ReadListValue(const base::Pickle* m,
base::PickleIterator* iter,
base::ListValue* value,
int recursion) {
int size;
if (!ReadParam(m, iter, &size))
return false;
base::Value::ListStorage list_storage;
list_storage.resize(size);
for (base::Value& subval : list_storage) {
if (!ReadValue(m, iter, &subval, recursion + 1))
return false;
}
*value = base::ListValue(std::move(list_storage));
return true;
}
bool ReadValue(const base::Pickle* m,
base::PickleIterator* iter,
base::Value* value,
int recursion) {
if (recursion > kMaxRecursionDepth) {
LOG(ERROR) << "Max recursion depth hit in ReadValue.";
return false;
}
int type;
if (!ReadParam(m, iter, &type))
return false;
constexpr int kMinValueType = static_cast<int>(base::Value::Type::NONE);
constexpr int kMaxValueType = static_cast<int>(base::Value::Type::LIST);
if (type > kMaxValueType || type < kMinValueType)
return false;
switch (static_cast<base::Value::Type>(type)) {
case base::Value::Type::NONE:
*value = base::Value();
break;
case base::Value::Type::BOOLEAN: {
bool val;
if (!ReadParam(m, iter, &val))
return false;
*value = base::Value(val);
break;
}
case base::Value::Type::INTEGER: {
int val;
if (!ReadParam(m, iter, &val))
return false;
*value = base::Value(val);
break;
}
case base::Value::Type::DOUBLE: {
double val;
if (!ReadParam(m, iter, &val))
return false;
*value = base::Value(val);
break;
}
case base::Value::Type::STRING: {
std::string val;
if (!ReadParam(m, iter, &val))
return false;
*value = base::Value(std::move(val));
break;
}
case base::Value::Type::BINARY: {
base::span<const uint8_t> data;
if (!iter->ReadData(&data))
return false;
*value = base::Value(data);
break;
}
case base::Value::Type::DICTIONARY: {
base::DictionaryValue val;
if (!ReadDictionaryValue(m, iter, &val, recursion))
return false;
*value = std::move(val);
break;
}
case base::Value::Type::LIST: {
base::ListValue val;
if (!ReadListValue(m, iter, &val, recursion))
return false;
*value = std::move(val);
break;
}
default:
NOTREACHED();
return false;
}
return true;
}
} // namespace
// -----------------------------------------------------------------------------
LogData::LogData()
: routing_id(0),
type(0),
sent(0),
receive(0),
dispatch(0) {
}
LogData::LogData(const LogData& other) = default;
LogData::~LogData() = default;
void ParamTraits<bool>::Log(const param_type& p, std::string* l) {
l->append(p ? "true" : "false");
}
void ParamTraits<signed char>::Write(base::Pickle* m, const param_type& p) {
m->WriteBytes(&p, sizeof(param_type));
}
bool ParamTraits<signed char>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
const char* data;
if (!iter->ReadBytes(&data, sizeof(param_type)))
return false;
memcpy(r, data, sizeof(param_type));
return true;
}
void ParamTraits<signed char>::Log(const param_type& p, std::string* l) {
l->append(base::NumberToString(p));
}
void ParamTraits<unsigned char>::Write(base::Pickle* m, const param_type& p) {
m->WriteBytes(&p, sizeof(param_type));
}
bool ParamTraits<unsigned char>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
const char* data;
if (!iter->ReadBytes(&data, sizeof(param_type)))
return false;
memcpy(r, data, sizeof(param_type));
return true;
}
void ParamTraits<unsigned char>::Log(const param_type& p, std::string* l) {
l->append(base::NumberToString(p));
}
void ParamTraits<unsigned short>::Write(base::Pickle* m, const param_type& p) {
m->WriteBytes(&p, sizeof(param_type));
}
bool ParamTraits<unsigned short>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
const char* data;
if (!iter->ReadBytes(&data, sizeof(param_type)))
return false;
memcpy(r, data, sizeof(param_type));
return true;
}
void ParamTraits<unsigned short>::Log(const param_type& p, std::string* l) {
l->append(base::NumberToString(p));
}
void ParamTraits<int>::Log(const param_type& p, std::string* l) {
l->append(base::NumberToString(p));
}
void ParamTraits<unsigned int>::Log(const param_type& p, std::string* l) {
l->append(base::NumberToString(p));
}
#if defined(OS_WIN) || defined(OS_LINUX) || defined(OS_CHROMEOS) || \
defined(OS_FUCHSIA) || (defined(OS_ANDROID) && defined(ARCH_CPU_64_BITS))
void ParamTraits<long>::Log(const param_type& p, std::string* l) {
l->append(base::NumberToString(p));
}
void ParamTraits<unsigned long>::Log(const param_type& p, std::string* l) {
l->append(base::NumberToString(p));
}
#endif
void ParamTraits<long long>::Log(const param_type& p, std::string* l) {
l->append(base::NumberToString(p));
}
void ParamTraits<unsigned long long>::Log(const param_type& p, std::string* l) {
l->append(base::NumberToString(p));
}
void ParamTraits<float>::Log(const param_type& p, std::string* l) {
l->append(base::StringPrintf("%e", p));
}
void ParamTraits<double>::Write(base::Pickle* m, const param_type& p) {
m->WriteBytes(reinterpret_cast<const char*>(&p), sizeof(param_type));
}
bool ParamTraits<double>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
const char *data;
if (!iter->ReadBytes(&data, sizeof(*r))) {
NOTREACHED();
return false;
}
memcpy(r, data, sizeof(param_type));
return true;
}
void ParamTraits<double>::Log(const param_type& p, std::string* l) {
l->append(base::StringPrintf("%e", p));
}
void ParamTraits<std::string>::Log(const param_type& p, std::string* l) {
l->append(p);
}
void ParamTraits<std::u16string>::Log(const param_type& p, std::string* l) {
l->append(base::UTF16ToUTF8(p));
}
#if defined(OS_WIN)
bool ParamTraits<std::wstring>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
base::StringPiece16 piece16;
if (!iter->ReadStringPiece16(&piece16))
return false;
*r = base::AsWString(piece16);
return true;
}
void ParamTraits<std::wstring>::Log(const param_type& p, std::string* l) {
l->append(base::WideToUTF8(p));
}
#endif
void ParamTraits<std::vector<char>>::Write(base::Pickle* m,
const param_type& p) {
if (p.empty()) {
m->WriteData(NULL, 0);
} else {
m->WriteData(&p.front(), base::checked_cast<int>(p.size()));
}
}
bool ParamTraits<std::vector<char>>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
const char *data;
int data_size = 0;
if (!iter->ReadData(&data, &data_size) || data_size < 0)
return false;
r->resize(data_size);
if (data_size)
memcpy(&r->front(), data, data_size);
return true;
}
void ParamTraits<std::vector<char> >::Log(const param_type& p, std::string* l) {
LogBytes(p, l);
}
void ParamTraits<std::vector<unsigned char>>::Write(base::Pickle* m,
const param_type& p) {
if (p.empty()) {
m->WriteData(NULL, 0);
} else {
m->WriteData(reinterpret_cast<const char*>(&p.front()),
base::checked_cast<int>(p.size()));
}
}
bool ParamTraits<std::vector<unsigned char>>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
const char *data;
int data_size = 0;
if (!iter->ReadData(&data, &data_size) || data_size < 0)
return false;
r->resize(data_size);
if (data_size)
memcpy(&r->front(), data, data_size);
return true;
}
void ParamTraits<std::vector<unsigned char> >::Log(const param_type& p,
std::string* l) {
LogBytes(p, l);
}
void ParamTraits<std::vector<bool>>::Write(base::Pickle* m,
const param_type& p) {
WriteParam(m, base::checked_cast<int>(p.size()));
// Cast to bool below is required because libc++'s
// vector<bool>::const_reference is different from bool, and we want to avoid
// writing an extra specialization of ParamTraits for it.
for (size_t i = 0; i < p.size(); i++)
WriteParam(m, static_cast<bool>(p[i]));
}
bool ParamTraits<std::vector<bool>>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
int size;
// ReadLength() checks for < 0 itself.
if (!iter->ReadLength(&size))
return false;
r->resize(size);
for (int i = 0; i < size; i++) {
bool value;
if (!ReadParam(m, iter, &value))
return false;
(*r)[i] = value;
}
return true;
}
void ParamTraits<std::vector<bool> >::Log(const param_type& p, std::string* l) {
for (size_t i = 0; i < p.size(); ++i) {
if (i != 0)
l->push_back(' ');
LogParam(static_cast<bool>(p[i]), l);
}
}
void ParamTraits<base::DictionaryValue>::Write(base::Pickle* m,
const param_type& p) {
WriteValue(m, &p, 0);
}
bool ParamTraits<base::DictionaryValue>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
int type;
if (!ReadParam(m, iter, &type) ||
type != static_cast<int>(base::Value::Type::DICTIONARY))
return false;
return ReadDictionaryValue(m, iter, r, 0);
}
void ParamTraits<base::DictionaryValue>::Log(const param_type& p,
std::string* l) {
std::string json;
base::JSONWriter::Write(p, &json);
l->append(json);
}
#if defined(OS_POSIX) || defined(OS_FUCHSIA)
void ParamTraits<base::FileDescriptor>::Write(base::Pickle* m,
const param_type& p) {
// This serialization must be kept in sync with
// nacl_message_scanner.cc:WriteHandle().
const bool valid = p.fd >= 0;
WriteParam(m, valid);
if (!valid)
return;
if (p.auto_close) {
if (!m->WriteAttachment(
new internal::PlatformFileAttachment(base::ScopedFD(p.fd))))
NOTREACHED();
} else {
if (!m->WriteAttachment(new internal::PlatformFileAttachment(p.fd)))
NOTREACHED();
}
}
bool ParamTraits<base::FileDescriptor>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
*r = base::FileDescriptor();
bool valid;
if (!ReadParam(m, iter, &valid))
return false;
if (!valid)
return true;
scoped_refptr<base::Pickle::Attachment> attachment;
if (!m->ReadAttachment(iter, &attachment))
return false;
if (static_cast<MessageAttachment*>(attachment.get())->GetType() !=
MessageAttachment::Type::PLATFORM_FILE) {
return false;
}
*r = base::FileDescriptor(
static_cast<internal::PlatformFileAttachment*>(attachment.get())
->TakePlatformFile(),
true);
return true;
}
void ParamTraits<base::FileDescriptor>::Log(const param_type& p,
std::string* l) {
if (p.auto_close) {
l->append(base::StringPrintf("FD(%d auto-close)", p.fd));
} else {
l->append(base::StringPrintf("FD(%d)", p.fd));
}
}
void ParamTraits<base::ScopedFD>::Write(base::Pickle* m, const param_type& p) {
// This serialization must be kept in sync with
// nacl_message_scanner.cc:WriteHandle().
const bool valid = p.is_valid();
WriteParam(m, valid);
if (!valid)
return;
if (!m->WriteAttachment(new internal::PlatformFileAttachment(
std::move(const_cast<param_type&>(p))))) {
NOTREACHED();
}
}
bool ParamTraits<base::ScopedFD>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
r->reset();
bool valid;
if (!ReadParam(m, iter, &valid))
return false;
if (!valid)
return true;
scoped_refptr<base::Pickle::Attachment> attachment;
if (!m->ReadAttachment(iter, &attachment))
return false;
if (static_cast<MessageAttachment*>(attachment.get())->GetType() !=
MessageAttachment::Type::PLATFORM_FILE) {
return false;
}
*r = base::ScopedFD(
static_cast<internal::PlatformFileAttachment*>(attachment.get())
->TakePlatformFile());
return true;
}
void ParamTraits<base::ScopedFD>::Log(const param_type& p, std::string* l) {
l->append(base::StringPrintf("ScopedFD(%d)", p.get()));
}
#endif // defined(OS_POSIX) || defined(OS_FUCHSIA)
#if defined(OS_WIN)
void ParamTraits<base::win::ScopedHandle>::Write(base::Pickle* m,
const param_type& p) {
const bool valid = p.IsValid();
WriteParam(m, valid);
if (!valid)
return;
HandleWin handle(p.Get());
WriteParam(m, handle);
}
bool ParamTraits<base::win::ScopedHandle>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
r->Close();
bool valid;
if (!ReadParam(m, iter, &valid))
return false;
if (!valid)
return true;
HandleWin handle;
if (!ReadParam(m, iter, &handle))
return false;
r->Set(handle.get_handle());
return true;
}
void ParamTraits<base::win::ScopedHandle>::Log(const param_type& p,
std::string* l) {
l->append(base::StringPrintf("ScopedHandle(%p)", p.Get()));
}
#endif // defined(OS_WIN)
#if defined(OS_FUCHSIA)
void ParamTraits<zx::vmo>::Write(base::Pickle* m, const param_type& p) {
// This serialization must be kept in sync with
// nacl_message_scanner.cc:WriteHandle().
const bool valid = p.is_valid();
WriteParam(m, valid);
if (!valid)
return;
if (!m->WriteAttachment(new internal::HandleAttachmentFuchsia(
std::move(const_cast<param_type&>(p))))) {
NOTREACHED();
}
}
bool ParamTraits<zx::vmo>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
r->reset();
bool valid;
if (!ReadParam(m, iter, &valid))
return false;
if (!valid)
return true;
scoped_refptr<base::Pickle::Attachment> attachment;
if (!m->ReadAttachment(iter, &attachment))
return false;
if (static_cast<MessageAttachment*>(attachment.get())->GetType() !=
MessageAttachment::Type::FUCHSIA_HANDLE) {
return false;
}
*r = zx::vmo(static_cast<internal::HandleAttachmentFuchsia*>(attachment.get())
->Take());
return true;
}
void ParamTraits<zx::vmo>::Log(const param_type& p, std::string* l) {
l->append("ZirconVMO");
}
void ParamTraits<zx::channel>::Write(base::Pickle* m, const param_type& p) {
// This serialization must be kept in sync with
// nacl_message_scanner.cc:WriteHandle().
const bool valid = p.is_valid();
WriteParam(m, valid);
if (!valid)
return;
if (!m->WriteAttachment(new internal::HandleAttachmentFuchsia(
std::move(const_cast<param_type&>(p))))) {
NOTREACHED();
}
}
bool ParamTraits<zx::channel>::Read(const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
r->reset();
bool valid;
if (!ReadParam(m, iter, &valid))
return false;
if (!valid)
return true;
scoped_refptr<base::Pickle::Attachment> attachment;
if (!m->ReadAttachment(iter, &attachment))
return false;
if (static_cast<MessageAttachment*>(attachment.get())->GetType() !=
MessageAttachment::Type::FUCHSIA_HANDLE) {
return false;
}
*r = zx::channel(
static_cast<internal::HandleAttachmentFuchsia*>(attachment.get())
->Take());
return true;
}
void ParamTraits<zx::channel>::Log(const param_type& p, std::string* l) {
l->append("ZirconChannel");
}
#endif // defined(OS_FUCHSIA)
#if defined(OS_ANDROID)
void ParamTraits<base::android::ScopedHardwareBufferHandle>::Write(
base::Pickle* m,
const param_type& p) {
const bool is_valid = p.is_valid();
WriteParam(m, is_valid);
if (!is_valid)
return;
// We must keep a ref to the AHardwareBuffer alive until the receiver has
// acquired its own reference. We do this by sending a message pipe handle
// along with the buffer. When the receiver deserializes (or even if they
// die without ever reading the message) their end of the pipe will be
// closed. We will eventually detect this and release the AHB reference.
mojo::MessagePipe tracking_pipe;
m->WriteAttachment(new internal::MojoHandleAttachment(
mojo::ScopedHandle::From(std::move(tracking_pipe.handle0))));
WriteParam(m, base::FileDescriptor(p.SerializeAsFileDescriptor().release(),
true /* auto_close */));
// Pass ownership of the input handle to our tracking pipe to keep the AHB
// alive long enough to be deserialized by the receiver.
mojo::ScopeToMessagePipe(std::move(const_cast<param_type&>(p)),
std::move(tracking_pipe.handle1));
}
bool ParamTraits<base::android::ScopedHardwareBufferHandle>::Read(
const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
*r = base::android::ScopedHardwareBufferHandle();
bool is_valid;
if (!ReadParam(m, iter, &is_valid))
return false;
if (!is_valid)
return true;
scoped_refptr<base::Pickle::Attachment> tracking_pipe_attachment;
if (!m->ReadAttachment(iter, &tracking_pipe_attachment))
return false;
// We keep this alive until the AHB is safely deserialized below. When this
// goes out of scope, the sender holding the other end of this pipe will treat
// this handle closure as a signal that it's safe to release their AHB
// keepalive ref.
mojo::ScopedHandle tracking_pipe =
static_cast<MessageAttachment*>(tracking_pipe_attachment.get())
->TakeMojoHandle();
base::FileDescriptor descriptor;
if (!ReadParam(m, iter, &descriptor))
return false;
// NOTE: It is valid to deserialize an invalid FileDescriptor, so the success
// of |ReadParam()| above does not imply that |descriptor| is valid.
base::ScopedFD scoped_fd(descriptor.fd);
if (!scoped_fd.is_valid())
return false;
*r = base::android::ScopedHardwareBufferHandle::DeserializeFromFileDescriptor(
std::move(scoped_fd));
return true;
}
void ParamTraits<base::android::ScopedHardwareBufferHandle>::Log(
const param_type& p,
std::string* l) {
l->append(base::StringPrintf("base::android::ScopedHardwareBufferHandle(%p)",
p.get()));
}
#endif // defined(OS_ANDROID)
void ParamTraits<base::ReadOnlySharedMemoryRegion>::Write(base::Pickle* m,
const param_type& p) {
base::subtle::PlatformSharedMemoryRegion handle =
base::ReadOnlySharedMemoryRegion::TakeHandleForSerialization(
std::move(const_cast<param_type&>(p)));
WriteParam(m, std::move(handle));
}
bool ParamTraits<base::ReadOnlySharedMemoryRegion>::Read(
const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
base::subtle::PlatformSharedMemoryRegion handle;
if (!ReadParam(m, iter, &handle))
return false;
*r = base::ReadOnlySharedMemoryRegion::Deserialize(std::move(handle));
return true;
}
void ParamTraits<base::ReadOnlySharedMemoryRegion>::Log(const param_type& p,
std::string* l) {
*l = "<base::ReadOnlySharedMemoryRegion>";
// TODO(alexilin): currently there is no way to access underlying handle
// without destructing a ReadOnlySharedMemoryRegion instance.
}
void ParamTraits<base::WritableSharedMemoryRegion>::Write(base::Pickle* m,
const param_type& p) {
base::subtle::PlatformSharedMemoryRegion handle =
base::WritableSharedMemoryRegion::TakeHandleForSerialization(
std::move(const_cast<param_type&>(p)));
WriteParam(m, std::move(handle));
}
bool ParamTraits<base::WritableSharedMemoryRegion>::Read(
const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
base::subtle::PlatformSharedMemoryRegion handle;
if (!ReadParam(m, iter, &handle))
return false;
*r = base::WritableSharedMemoryRegion::Deserialize(std::move(handle));
return true;
}
void ParamTraits<base::WritableSharedMemoryRegion>::Log(const param_type& p,
std::string* l) {
*l = "<base::WritableSharedMemoryRegion>";
// TODO(alexilin): currently there is no way to access underlying handle
// without destructing a ReadOnlySharedMemoryRegion instance.
}
void ParamTraits<base::UnsafeSharedMemoryRegion>::Write(base::Pickle* m,
const param_type& p) {
base::subtle::PlatformSharedMemoryRegion handle =
base::UnsafeSharedMemoryRegion::TakeHandleForSerialization(
std::move(const_cast<param_type&>(p)));
WriteParam(m, std::move(handle));
}
bool ParamTraits<base::UnsafeSharedMemoryRegion>::Read(
const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
base::subtle::PlatformSharedMemoryRegion handle;
if (!ReadParam(m, iter, &handle))
return false;
*r = base::UnsafeSharedMemoryRegion::Deserialize(std::move(handle));
return true;
}
void ParamTraits<base::UnsafeSharedMemoryRegion>::Log(const param_type& p,
std::string* l) {
*l = "<base::UnsafeSharedMemoryRegion>";
// TODO(alexilin): currently there is no way to access underlying handle
// without destructing a ReadOnlySharedMemoryRegion instance.
}
void ParamTraits<base::subtle::PlatformSharedMemoryRegion>::Write(
base::Pickle* m,
const param_type& p) {
// This serialization must be kept in sync with
// nacl_message_scanner.cc::WriteHandle().
const bool valid = p.IsValid();
WriteParam(m, valid);
if (!valid)
return;
WriteParam(m, p.GetMode());
WriteParam(m, static_cast<uint64_t>(p.GetSize()));
WriteParam(m, p.GetGUID());
#if defined(OS_WIN)
base::win::ScopedHandle h = const_cast<param_type&>(p).PassPlatformHandle();
HandleWin handle_win(h.Get());
WriteParam(m, handle_win);
#elif defined(OS_FUCHSIA)
zx::vmo vmo = const_cast<param_type&>(p).PassPlatformHandle();
WriteParam(m, vmo);
#elif defined(OS_MAC)
base::mac::ScopedMachSendRight h =
const_cast<param_type&>(p).PassPlatformHandle();
MachPortMac mach_port_mac(h.get());
WriteParam(m, mach_port_mac);
#elif defined(OS_ANDROID)
m->WriteAttachment(new internal::PlatformFileAttachment(
base::ScopedFD(const_cast<param_type&>(p).PassPlatformHandle())));
#elif defined(OS_POSIX)
base::subtle::ScopedFDPair h =
const_cast<param_type&>(p).PassPlatformHandle();
m->WriteAttachment(new internal::PlatformFileAttachment(std::move(h.fd)));
if (p.GetMode() ==
base::subtle::PlatformSharedMemoryRegion::Mode::kWritable) {
m->WriteAttachment(
new internal::PlatformFileAttachment(std::move(h.readonly_fd)));
}
#endif
}
bool ParamTraits<base::subtle::PlatformSharedMemoryRegion>::Read(
const base::Pickle* m,
base::PickleIterator* iter,
param_type* r) {
bool valid;
if (!ReadParam(m, iter, &valid))
return false;
if (!valid) {
*r = base::subtle::PlatformSharedMemoryRegion();
return true;
}
base::subtle::PlatformSharedMemoryRegion::Mode mode;
uint64_t shm_size;
base::UnguessableToken guid;
if (!ReadParam(m, iter, &mode) || !ReadParam(m, iter, &shm_size) ||
!base::IsValueInRangeForNumericType<size_t>(shm_size) ||
!ReadParam(m, iter, &guid)) {
return false;
}
size_t size = static_cast<size_t>(shm_size);
#if defined(OS_WIN)
HandleWin handle_win;
if (!ReadParam(m, iter, &handle_win))
return false;
*r = base::subtle::PlatformSharedMemoryRegion::Take(
base::win::ScopedHandle(handle_win.get_handle()), mode, size, guid);
#elif defined(OS_FUCHSIA)
zx::vmo vmo;
if (!ReadParam(m, iter, &vmo))
return false;
*r = base::subtle::PlatformSharedMemoryRegion::Take(std::move(vmo), mode,