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// Copyright 2016 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.
#ifndef MOJO_EDK_SYSTEM_BROKER_HOST_H_
#define MOJO_EDK_SYSTEM_BROKER_HOST_H_
#include <stdint.h>
#include <vector>
#include "base/macros.h"
#include "base/message_loop/message_loop_current.h"
#include "base/process/process_handle.h"
#include "base/strings/string_piece.h"
#include "mojo/edk/embedder/process_error_callback.h"
#include "mojo/edk/embedder/scoped_platform_handle.h"
#include "mojo/edk/system/channel.h"
#include "mojo/edk/system/scoped_process_handle.h"
namespace mojo {
namespace edk {
// The BrokerHost is a channel to a broker client process, servicing synchronous
// IPCs issued by the client.
class BrokerHost : public Channel::Delegate,
public base::MessageLoopCurrent::DestructionObserver {
public:
BrokerHost(base::ProcessHandle client_process,
ScopedInternalPlatformHandle handle,
const ProcessErrorCallback& process_error_callback);
// Send |handle| to the client, to be used to establish a NodeChannel to us.
bool SendChannel(ScopedInternalPlatformHandle handle);
#if defined(OS_WIN)
// Sends a named channel to the client. Like above, but for named pipes.
void SendNamedChannel(const base::StringPiece16& pipe_name);
#endif
private:
~BrokerHost() override;
bool PrepareHandlesForClient(
std::vector<ScopedInternalPlatformHandle>* handles);
// Channel::Delegate:
void OnChannelMessage(
const void* payload,
size_t payload_size,
std::vector<ScopedInternalPlatformHandle> handles) override;
void OnChannelError(Channel::Error error) override;
// base::MessageLoopCurrent::DestructionObserver:
void WillDestroyCurrentMessageLoop() override;
void OnBufferRequest(uint32_t num_bytes);
const ProcessErrorCallback process_error_callback_;
#if defined(OS_WIN)
ScopedProcessHandle client_process_;
#endif
scoped_refptr<Channel> channel_;
DISALLOW_COPY_AND_ASSIGN(BrokerHost);
};
} // namespace edk
} // namespace mojo
#endif // MOJO_EDK_SYSTEM_BROKER_HOST_H_
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