1 // 2 // Copyright (C) 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 #pragma once 17 18 19 #include <functional> 20 #include <map> 21 #include <optional> 22 23 #include "host/commands/modem_simulator/channel_monitor.h" 24 #include "host/commands/modem_simulator/command_parser.h" 25 #include "host/commands/modem_simulator/thread_looper.h" 26 27 namespace cuttlefish { 28 29 enum ModemServiceType : int { 30 kSimService = 0, 31 kNetworkService = 1, 32 kDataService = 2, 33 kCallService = 3, 34 kSmsService = 4, 35 kSupService = 5, 36 kStkService = 6, 37 kMiscService = 7, 38 }; 39 40 using f_func = std::function<void(const Client&)>; // Full match 41 using p_func = std::function<void(const Client&, std::string&)>; // Partial match 42 43 class CommandHandler { 44 public: 45 CommandHandler(const std::string& command, f_func handler); 46 CommandHandler(const std::string& command, p_func handler); 47 48 ~CommandHandler() = default; 49 50 int Compare(const std::string& command) const; 51 void HandleCommand(const Client& client, std::string& command) const; 52 53 private: 54 enum MatchMode {FULL_MATCH = 0, PARTIAL_MATCH = 1}; 55 56 std::string command_prefix; 57 MatchMode match_mode; 58 59 std::optional<f_func> f_command_handler; 60 std::optional<p_func> p_command_handler; 61 }; 62 63 class ModemService { 64 public: 65 66 virtual ~ModemService() = default; 67 68 ModemService(const ModemService &) = delete; 69 ModemService &operator=(const ModemService &) = delete; 70 71 bool HandleModemCommand(const Client& client, std::string command); 72 73 static const std::string kCmeErrorOperationNotAllowed; 74 static const std::string kCmeErrorOperationNotSupported; 75 static const std::string kCmeErrorSimNotInserted; 76 static const std::string kCmeErrorSimPinRequired; 77 static const std::string kCmeErrorSimPukRequired; 78 static const std::string kCmeErrorSimBusy; 79 static const std::string kCmeErrorIncorrectPassword; 80 static const std::string kCmeErrorMemoryFull; 81 static const std::string kCmeErrorInvalidIndex; 82 static const std::string kCmeErrorNotFound; 83 static const std::string kCmeErrorInvalidCharactersInTextString; 84 static const std::string kCmeErrorNoNetworkService; 85 static const std::string kCmeErrorNetworkNotAllowedEmergencyCallsOnly; 86 static const std::string kCmeErrorInCorrectParameters; 87 static const std::string kCmeErrorNetworkNotAttachedDueToMTFunctionalRestrictions; 88 static const std::string kCmeErrorFixedDialNumberOnlyAllowed; 89 90 static const std::string kCmsErrorOperationNotAllowed; 91 static const std::string kCmsErrorOperationNotSupported; 92 static const std::string kCmsErrorInvalidPDUModeParam; 93 static const std::string kCmsErrorSCAddressUnknown; 94 95 static const std::pair<int, int> kRemotePortRange; 96 97 protected: 98 ModemService(int32_t service_id, std::vector<CommandHandler> command_handlers, 99 ChannelMonitor* channel_monitor, ThreadLooper* thread_looper); 100 void HandleCommandDefaultSupported(const Client& client); 101 void SendUnsolicitedCommand(std::string unsol_command); 102 103 cuttlefish::SharedFD ConnectToRemoteCvd(std::string port); 104 void SendCommandToRemote(cuttlefish::SharedFD remote_client, 105 std::string response); 106 void CloseRemoteConnection(cuttlefish::SharedFD remote_client); 107 static std::string GetHostId(); 108 109 int32_t service_id_; 110 const std::vector<CommandHandler> command_handlers_; 111 ThreadLooper* thread_looper_; 112 ChannelMonitor* channel_monitor_; 113 }; 114 115 } // namespace cuttlefish 116