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      1 /*
      2  * Copyright (C) 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 #include "buffet/flouride_socket_bluetooth_client.h"
     18 
     19 #include <sys/socket.h>
     20 #include <sys/un.h>
     21 
     22 #include <brillo/streams/file_stream.h>
     23 
     24 namespace buffet {
     25 
     26 const char kFlourideSocketPath[] = "/dev/socket/bluetooth";
     27 
     28 std::unique_ptr<BluetoothClient> BluetoothClient::CreateInstance() {
     29   return std::unique_ptr<BluetoothClient>{new FlourideSocketBluetoothClient};
     30 }
     31 
     32 FlourideSocketBluetoothClient::FlourideSocketBluetoothClient() {}
     33 
     34 FlourideSocketBluetoothClient::~FlourideSocketBluetoothClient() {}
     35 
     36 // TODO(rginda): Call this from somewhere.
     37 bool FlourideSocketBluetoothClient::OpenSocket() {
     38   LOG(INFO) << "Opening: " << kFlourideSocketPath;
     39 
     40   int socket_fd = socket(PF_UNIX, SOCK_STREAM, 0);
     41   if (socket_fd < 0) {
     42     PLOG(ERROR) << "Failed to create domain socket: " << kFlourideSocketPath;
     43     return false;
     44   }
     45 
     46   sockaddr_un addr{AF_UNIX};
     47   static_assert(sizeof(kFlourideSocketPath) <= sizeof(addr.sun_path),
     48                 "kFlourideSocketPath too long");
     49   strncpy(addr.sun_path, kFlourideSocketPath, sizeof(addr.sun_path));
     50   if (connect(socket_fd, reinterpret_cast<sockaddr *>(&addr),
     51               sizeof(sockaddr_un))) {
     52     PLOG(ERROR) << "Failed to connect to domain socket: "
     53                 << kFlourideSocketPath;
     54     close(socket_fd);
     55     return false;
     56   }
     57 
     58   stream_ = brillo::FileStream::FromFileDescriptor(socket_fd, true, nullptr);
     59   return true;
     60 }
     61 
     62 }  // namespace buffet
     63