1 /* 2 * Copyright (C) 2017 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 #include <glog/logging.h> 17 18 #include "host/libs/vadb/usb_cmd_control_transfer.h" 19 20 namespace vadb { 21 USBCmdControlTransfer::USBCmdControlTransfer( 22 uint8_t bus_id, uint8_t dev_id, uint8_t type, uint8_t request, 23 uint16_t value, uint16_t index, uint32_t timeout, std::vector<uint8_t> data, 24 usbip::Device::AsyncTransferReadyCB callback) 25 : data_(std::move(data)), callback_(std::move(callback)) { 26 req_.bus_id = bus_id; 27 req_.dev_id = dev_id; 28 req_.type = type; 29 req_.cmd = request; 30 req_.value = value; 31 req_.index = index; 32 req_.length = data_.size(); 33 req_.timeout = timeout; 34 } 35 36 bool USBCmdControlTransfer::OnRequest(const cvd::SharedFD& fd) { 37 if (fd->Write(&req_, sizeof(req_)) != sizeof(req_)) { 38 LOG(ERROR) << "Short write: " << fd->StrError(); 39 return false; 40 } 41 42 if ((req_.type & 0x80) == 0) { 43 if (data_.size() > 0) { 44 if (static_cast<size_t>(fd->Write(data_.data(), data_.size())) != 45 data_.size()) { 46 LOG(ERROR) << "Short write: " << fd->StrError(); 47 return false; 48 } 49 } 50 } 51 52 return true; 53 } 54 55 bool USBCmdControlTransfer::OnResponse(bool is_success, 56 const cvd::SharedFD& fd) { 57 if (!is_success) { 58 callback_(false, std::move(data_)); 59 return true; 60 } 61 62 if (req_.type & 0x80) { 63 int32_t len; 64 if (fd->Read(&len, sizeof(len)) != sizeof(len)) { 65 LOG(ERROR) << "Short read: " << fd->StrError(); 66 callback_(false, std::move(data_)); 67 return false; 68 } 69 70 if (len > 0) { 71 data_.resize(len); 72 if (fd->Read(data_.data(), len) != len) { 73 LOG(ERROR) << "Short read: " << fd->StrError(); 74 callback_(false, std::move(data_)); 75 return false; 76 } 77 } 78 } 79 80 callback_(true, std::move(data_)); 81 return true; 82 } 83 } // namespace vadb 84
