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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "host/commands/virtual_usb_manager/usbip/server.h"
#include <glog/logging.h>
#include <netinet/in.h>
#include "common/libs/fs/shared_select.h"
using cvd::SharedFD;
namespace vadb {
namespace usbip {
Server::Server(const std::string& name, const DevicePool& devices)
: name_{name}, device_pool_{devices} {}
bool Server::Init() { return CreateServerSocket(); }
// Open new listening server socket.
// Returns false, if listening socket could not be created.
bool Server::CreateServerSocket() {
LOG(INFO) << "Starting server socket: " << name_;
server_ = SharedFD::SocketLocalServer(name_.c_str(), true, SOCK_STREAM, 0700);
if (!server_->IsOpen()) {
LOG(ERROR) << "Could not create socket: " << server_->StrError();
return false;
}
return true;
}
void Server::BeforeSelect(cvd::SharedFDSet* fd_read) const {
fd_read->Set(server_);
for (const auto& client : clients_) client.BeforeSelect(fd_read);
}
void Server::AfterSelect(const cvd::SharedFDSet& fd_read) {
if (fd_read.IsSet(server_)) HandleIncomingConnection();
for (auto iter = clients_.begin(); iter != clients_.end();) {
if (!iter->AfterSelect(fd_read)) {
// If client conversation failed, hang up.
iter = clients_.erase(iter);
continue;
}
++iter;
}
}
// Accept new USB/IP connection. Add it to client pool.
void Server::HandleIncomingConnection() {
SharedFD client = SharedFD::Accept(*server_, nullptr, nullptr);
if (!client->IsOpen()) {
LOG(ERROR) << "Client connection failed: " << client->StrError();
return;
}
clients_.emplace_back(device_pool_, client);
}
} // namespace usbip
} // namespace vadb
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