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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "mojo/core/ipcz_driver/object.h"
#include "base/check_op.h"
#include "mojo/core/ipcz_api.h"
namespace mojo::core::ipcz_driver {
ObjectBase::ObjectBase(Type type) : type_(type) {}
ObjectBase::~ObjectBase() = default;
void ObjectBase::Close() {}
bool ObjectBase::IsSerializable() const {
return false;
}
bool ObjectBase::GetSerializedDimensions(Transport& transmitter,
size_t& num_bytes,
size_t& num_handles) {
return false;
}
bool ObjectBase::Serialize(Transport& transmitter,
base::span<uint8_t> data,
base::span<PlatformHandle> handles) {
return false;
}
// static
IpczHandle ObjectBase::Box(scoped_refptr<ObjectBase> object) {
IpczHandle box;
const IpczBoxContents contents = {
.size = sizeof(contents),
.type = IPCZ_BOX_TYPE_DRIVER_OBJECT,
.object = {.driver_object = ReleaseAsHandle(std::move(object))},
};
const IpczResult result =
GetIpczAPI().Box(GetIpczNode(), &contents, IPCZ_NO_FLAGS, nullptr, &box);
CHECK_EQ(result, IPCZ_RESULT_OK);
return box;
}
// static
IpczDriverHandle ObjectBase::PeekBox(IpczHandle box) {
IpczBoxContents contents = {
.size = sizeof(contents),
.object = {.driver_object = IPCZ_INVALID_DRIVER_HANDLE},
};
GetIpczAPI().Unbox(box, IPCZ_UNBOX_PEEK, nullptr, &contents);
if (contents.type != IPCZ_BOX_TYPE_DRIVER_OBJECT) {
return IPCZ_INVALID_DRIVER_HANDLE;
}
return contents.object.driver_object;
}
// static
scoped_refptr<ObjectBase> ObjectBase::Unbox(IpczHandle box) {
IpczBoxContents contents = {.size = sizeof(contents)};
const IpczResult result =
GetIpczAPI().Unbox(box, IPCZ_NO_FLAGS, nullptr, &contents);
DCHECK_EQ(result, IPCZ_RESULT_OK);
DCHECK_EQ(contents.type, IPCZ_BOX_TYPE_DRIVER_OBJECT);
return TakeFromHandle(contents.object.driver_object);
}
} // namespace mojo::core::ipcz_driver
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