1 /*
2  * Copyright 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 #include <cstdint>
20 #include <fstream>
21 #include <vector>
22 
23 #include "model/devices/beacon.h"
24 #include "model/devices/scripted_beacon_ble_payload.pb.h"
25 
26 using android::bluetooth::rootcanal::model::devices::ScriptedBeaconBleAdProto::PlaybackEvent;
27 
28 namespace rootcanal {
29 // Pretend to be a lot of beacons by advertising from a file.
30 class ScriptedBeacon : public Beacon {
31 public:
32   ScriptedBeacon(const std::vector<std::string>& args);
33   virtual ~ScriptedBeacon() = default;
34 
Create(const std::vector<std::string> & args)35   static std::shared_ptr<Device> Create(const std::vector<std::string>& args) {
36     return std::make_shared<ScriptedBeacon>(args);
37   }
38 
39   // Return a string representation of the type of device.
GetTypeString()40   virtual std::string GetTypeString() const override { return "scripted_beacon"; }
41 
ToString()42   virtual std::string ToString() const override { return "scripted_beacon " + config_file_; }
43 
44   void Tick() override;
45   void ReceiveLinkLayerPacket(model::packets::LinkLayerPacketView packet_view, Phy::Type type,
46                               int8_t rssi) override;
47 
48 private:
49   static bool registered_;
50   std::string config_file_{};
51   std::string events_file_{};
52   std::ofstream events_ostream_;
53   struct Advertisement {
54     std::vector<uint8_t> ad;
55     Address address;
56     std::chrono::steady_clock::time_point ad_time;
57   };
58 
59   void get_next_advertisement();
60 
61   void set_state(PlaybackEvent::PlaybackEventType state);
62 
63   Advertisement next_ad_{};
64   int packet_num_{0};
65   PlaybackEvent::PlaybackEventType current_state_{PlaybackEvent::UNKNOWN};
66   std::chrono::steady_clock::time_point next_check_time_{};
67   android::bluetooth::rootcanal::model::devices::ScriptedBeaconBleAdProto::BleAdvertisementList
68           ble_ad_list_;
69 };
70 }  // namespace rootcanal
71