//
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// Copyright 2015 Google, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at:
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#pragma once
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#include <poll.h>
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#include <bluetooth/uuid.h>
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#include <memory>
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#include <string>
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#include <unordered_map>
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#include "service/gatt_server_old.h"
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namespace bluetooth {
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class Adapter;
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} // namespace bluetooth
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namespace ipc {
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// This implements a single threaded event loop which dispatches
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// reads from a set of FDs (pfds_) to a set of handlers.
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// Reads from the GATT pipe read end will result in a write to
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// to the IPC socket, and vise versa.
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class LinuxIPCHost {
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public:
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// LinuxIPCHost owns the passed sockfd.
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LinuxIPCHost(int sockfd, bluetooth::Adapter* adapter);
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~LinuxIPCHost();
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// Synchronously handle all events on input FDs.
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bool EventLoop();
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private:
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// Handler for IPC message receives.
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// Decodes protocol and dispatches to another handler.
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bool OnMessage();
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// Handler for GATT characteristic writes.
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// Encodes to protocol and transmits IPC.
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bool OnGattWrite();
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// Applies adapter name changes to stack.
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bool OnSetAdapterName(const std::string& name);
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// Handles service creation.
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bool OnCreateService(const std::string& service_uuid);
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// Handles service destruction.
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bool OnDestroyService(const std::string& service_uuid);
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// Creates a characteristic for a service.
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bool OnAddCharacteristic(const std::string& service_uuid,
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const std::string& characteristic_uuid,
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const std::string& control_uuid,
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const std::string& options);
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// Sets the value of a characetistic.
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bool OnSetCharacteristicValue(const std::string& service_uuid,
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const std::string& characteristic_uuid,
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const std::string& value);
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// Applies settings to service advertisement.
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bool OnSetAdvertisement(const std::string& service_uuid,
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const std::string& advertise_uuids,
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const std::string& advertise_data,
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const std::string& manufacturer_data,
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const std::string& transmit_name);
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// Applies settings to scan response.
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bool OnSetScanResponse(const std::string& service_uuid,
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const std::string& advertise_uuids,
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const std::string& advertise_data,
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const std::string& manufacturer_data,
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const std::string& transmit_name);
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// Starts service (advertisement and connections)
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bool OnStartService(const std::string& service_uuid);
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// Stops service.
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bool OnStopService(const std::string& service_uuid);
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// weak reference.
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bluetooth::Adapter* adapter_;
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// File descripters that we will block against.
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std::vector<struct pollfd> pfds_;
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// Container for multiple GATT servers. Currently only one is supported.
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// TODO(icoolidge): support many to one for real.
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std::unordered_map<std::string, std::unique_ptr<bluetooth::gatt::Server>>
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gatt_servers_;
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};
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} // namespace ipc
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