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      1 /*
      2  * Copyright 2015 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 <functional>
     20 #include <memory>
     21 #include <string>
     22 #include <vector>
     23 
     24 #include "base/files/scoped_file.h"
     25 
     26 namespace test_vendor_lib {
     27 
     28 // Manages communications between test channel and the controller. Mirrors the
     29 // HciTransport for the test channel.
     30 class TestChannelTransport {
     31  public:
     32   TestChannelTransport() {}
     33 
     34   ~TestChannelTransport() {}
     35 
     36   // Opens a port and returns the file descriptor for the socket.
     37   // Returns -1 on an error.
     38   int SetUp(int port);
     39 
     40   // Closes the port (if succesfully opened in SetUp).
     41   void CleanUp();
     42 
     43   // Waits for a connection request from the test channel program and
     44   // returns the file descriptor to watch for run-time parameters.
     45   // Returns -1 on an error.
     46   int Accept(int listen_fd);
     47 
     48   // Sets the callback that fires when data is read in WatchFd().
     49   void RegisterCommandHandler(
     50       const std::function<void(const std::string&,
     51                                const std::vector<std::string>&)>& callback);
     52 
     53   void OnCommandReady(int fd, std::function<void(void)> unwatch);
     54 
     55  private:
     56   std::function<void(const std::string&, const std::vector<std::string>&)>
     57       command_handler_;
     58 
     59   int listen_fd_ = -1;
     60 
     61   TestChannelTransport(const TestChannelTransport& cmdPckt) = delete;
     62   TestChannelTransport& operator=(const TestChannelTransport& cmdPckt) = delete;
     63 };
     64 
     65 }  // namespace test_vendor_lib
     66