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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MOJO_CORE_BROKER_HOST_H_
#define MOJO_CORE_BROKER_HOST_H_
#include <stdint.h>
#include <string_view>
#include <vector>
#include "base/process/process.h"
#include "base/process/process_handle.h"
#include "base/task/current_thread.h"
#include "build/build_config.h"
#include "mojo/core/channel.h"
#include "mojo/core/connection_params.h"
#include "mojo/core/embedder/process_error_callback.h"
#include "mojo/core/platform_handle_in_transit.h"
#include "mojo/public/cpp/platform/platform_handle.h"
namespace mojo {
namespace core {
// The BrokerHost is a channel to a broker client process, servicing synchronous
// IPCs issued by the client.
class BrokerHost : public Channel::Delegate,
public base::CurrentThread::DestructionObserver {
public:
BrokerHost(base::Process client_process,
ConnectionParams connection_params,
const ProcessErrorCallback& process_error_callback);
BrokerHost(const BrokerHost&) = delete;
BrokerHost& operator=(const BrokerHost&) = delete;
// Send |handle| to the client, to be used to establish a NodeChannel to us.
bool SendChannel(PlatformHandle handle);
#if BUILDFLAG(IS_WIN)
// Sends a named channel to the client. Like above, but for named pipes.
void SendNamedChannel(std::wstring_view pipe_name);
#endif
private:
~BrokerHost() override;
bool PrepareHandlesForClient(std::vector<PlatformHandleInTransit>* handles);
// Channel::Delegate:
void OnChannelMessage(const void* payload,
size_t payload_size,
std::vector<PlatformHandle> handles,
scoped_refptr<ipcz_driver::Envelope>) override;
void OnChannelError(Channel::Error error) override;
// base::CurrentThread::DestructionObserver:
void WillDestroyCurrentMessageLoop() override;
void OnBufferRequest(uint32_t num_bytes);
const ProcessErrorCallback process_error_callback_;
#if BUILDFLAG(IS_WIN)
base::Process client_process_;
#endif
scoped_refptr<Channel> channel_;
};
} // namespace core
} // namespace mojo
#endif // MOJO_CORE_BROKER_HOST_H_
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