mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-15 15:16:12 -04:00
135 lines
3.4 KiB
C++
135 lines
3.4 KiB
C++
// Copyright 2024 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "internal/platform/implementation/linux/ble_l2cap_socket.h"
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#include <sys/poll.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include <algorithm>
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#include <cstdint>
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#include <cstring>
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#include <optional>
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#include <string>
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#include <utility>
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#include "absl/strings/string_view.h"
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#include "absl/time/time.h"
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#include "internal/platform/implementation/crypto.h"
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#include "internal/platform/logging.h"
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#include "proto/mediums/ble_frames.pb.h"
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namespace nearby {
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namespace linux {
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BleL2capInputStream::~BleL2capInputStream() {
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Close();
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}
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ExceptionOr<ByteArray> BleL2capInputStream::Read(std::int64_t size) {
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std::vector<char> buffer(size);
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pollfd pfds[1];
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pfds[0].fd = fd_raw_->get();
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pfds[0].events = POLLIN;
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ssize_t rcvd = 0;
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while (rcvd < size) {
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int r = poll(pfds, 1, -1);
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if (r < 0) {
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if (errno == EINTR) {
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continue;
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}
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return Exception{Exception::kIo};
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}
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if (pfds[0].revents & POLLIN) {
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auto r = recv(fd_raw_->get(), buffer.data() + rcvd, size - rcvd, 0);
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if (r < 0) {
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return Exception{Exception::kIo};
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}
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rcvd += r;
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}
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}
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return ExceptionOr{ByteArray(std::string(buffer.begin(), buffer.end()))};
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}
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Exception BleL2capInputStream::Close() {
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if (!fd_raw_->isValid()) return {Exception::kSuccess};
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fd_raw_->reset();
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return {Exception::kSuccess};
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}
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BleL2capOutputStream::~BleL2capOutputStream() {
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Close();
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}
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Exception BleL2capOutputStream::Write(absl::string_view data) {
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pollfd pfds[1];
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pfds[0].fd = fd_raw_->get();
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pfds[0].events = POLLOUT;
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ssize_t sent = 0;
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while (sent < data.size()) {
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int r = poll(pfds, 1, -1);
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if (r < 0) {
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if (errno == EINTR) {
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continue;
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}
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return Exception{Exception::kIo};
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}
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if (pfds[0].revents & POLLOUT) {
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auto r = send(fd_raw_->get(), data.data() + sent, data.size(), 0);
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if (r < 0) {
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return Exception{Exception::kIo};
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}
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sent += r;
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}
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}
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return {Exception::kSuccess};
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}
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Exception BleL2capOutputStream::Close() {
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if (!fd_raw_->isValid()) return {Exception::kSuccess};
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fd_raw_->reset();
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return {Exception::kSuccess};
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}
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BleL2capSocket::BleL2capSocket(int fd,
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api::ble::BlePeripheral::UniqueId peripheral_id,
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std::string service_id)
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: fd_(std::make_shared<sdbus::UnixFd>(fd)),
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input_stream_(std::make_unique<BleL2capInputStream>(fd_)),
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output_stream_(std::make_unique<BleL2capOutputStream>(fd_)),
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peripheral_id_(peripheral_id) {}
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BleL2capSocket::~BleL2capSocket() {
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Close();
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}
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Exception BleL2capSocket::Close() {
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if (!fd_->isValid()) return {Exception::kIo};
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fd_->reset();
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return {Exception::kSuccess};
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}
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void BleL2capSocket::SetCloseNotifier(absl::AnyInvocable<void()> notifier) {}
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bool BleL2capSocket::IsClosed() const {
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return closed_;
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}
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} // namespace linux
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} // namespace nearby
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