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::
27     PlaybackEvent;
28 
29 namespace rootcanal {
30 // Pretend to be a lot of beacons by advertising from a file.
31 class ScriptedBeacon : public Beacon {
32  public:
33   ScriptedBeacon(const std::vector<std::string>& args);
34   virtual ~ScriptedBeacon() = default;
35 
Create(const std::vector<std::string> & args)36   static std::shared_ptr<Device> Create(const std::vector<std::string>& args) {
37     return std::make_shared<ScriptedBeacon>(args);
38   }
39 
40   // Return a string representation of the type of device.
GetTypeString()41   virtual std::string GetTypeString() const override {
42     return "scripted_beacon";
43   }
44 
ToString()45   virtual std::string ToString() const override {
46     return "scripted_beacon " + config_file_;
47   }
48 
49   void Tick() override;
50   void ReceiveLinkLayerPacket(model::packets::LinkLayerPacketView packet_view,
51                               Phy::Type type, int8_t rssi) override;
52 
53  private:
54   static bool registered_;
55   std::string config_file_{};
56   std::string events_file_{};
57   std::ofstream events_ostream_;
58   struct Advertisement {
59     std::vector<uint8_t> ad;
60     Address address;
61     std::chrono::steady_clock::time_point ad_time;
62   };
63 
64   void get_next_advertisement();
65 
66   void set_state(PlaybackEvent::PlaybackEventType state);
67 
68   Advertisement next_ad_{};
69   int packet_num_{0};
70   PlaybackEvent::PlaybackEventType current_state_{PlaybackEvent::UNKNOWN};
71   std::chrono::steady_clock::time_point next_check_time_{};
72   android::bluetooth::rootcanal::model::devices::ScriptedBeaconBleAdProto::
73       BleAdvertisementList ble_ad_list_;
74 };
75 }  // namespace rootcanal
76