mirror of
https://github.com/google/sandboxed-api.git
synced 2024-03-22 13:11:30 +08:00
96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
// Copyright 2019 Google LLC
|
|
//
|
|
// 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 "sandboxed_api/sandbox2/network_proxy_server.h"
|
|
|
|
#include <arpa/inet.h>
|
|
#include <netinet/in.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <syscall.h>
|
|
#include <cerrno>
|
|
#include <cstring>
|
|
|
|
#include <glog/logging.h>
|
|
#include "absl/memory/memory.h"
|
|
#include "sandboxed_api/sandbox2/util/fileops.h"
|
|
|
|
namespace sandbox2 {
|
|
|
|
NetworkProxyServer::NetworkProxyServer(int fd)
|
|
: comms_{absl::make_unique<Comms>(fd)}, fatal_error_{false} {}
|
|
|
|
void NetworkProxyServer::ProcessConnectRequest() {
|
|
std::vector<uint8_t> addr;
|
|
if (!comms_->RecvBytes(&addr)) {
|
|
fatal_error_ = true;
|
|
return;
|
|
}
|
|
|
|
const struct sockaddr_in* saddr =
|
|
reinterpret_cast<const sockaddr_in*>(addr.data());
|
|
|
|
// Only IPv4 TCP and IPv6 TCP are supported.
|
|
if (!((addr.size() == sizeof(sockaddr_in) && saddr->sin_family == AF_INET) ||
|
|
(addr.size() == sizeof(sockaddr_in6) &&
|
|
saddr->sin_family == AF_INET6))) {
|
|
SendError(EINVAL);
|
|
return;
|
|
}
|
|
|
|
int new_socket = socket(saddr->sin_family, SOCK_STREAM, 0);
|
|
if (new_socket < 0) {
|
|
SendError(errno);
|
|
return;
|
|
}
|
|
|
|
file_util::fileops::FDCloser new_socket_closer(new_socket);
|
|
|
|
int result = connect(
|
|
new_socket, reinterpret_cast<const sockaddr*>(addr.data()), addr.size());
|
|
|
|
if (result == 0) {
|
|
NotifySuccess();
|
|
if (!fatal_error_) {
|
|
if (!comms_->SendFD(new_socket)) {
|
|
fatal_error_ = true;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void NetworkProxyServer::Run() {
|
|
while (!fatal_error_) {
|
|
ProcessConnectRequest();
|
|
}
|
|
LOG(INFO)
|
|
<< "Clean shutdown or error occurred, shutting down NetworkProxyServer";
|
|
}
|
|
|
|
void NetworkProxyServer::SendError(int saved_errno) {
|
|
if (!comms_->SendInt32(saved_errno)) {
|
|
fatal_error_ = true;
|
|
}
|
|
}
|
|
|
|
void NetworkProxyServer::NotifySuccess() {
|
|
if (!comms_->SendInt32(0)) {
|
|
fatal_error_ = true;
|
|
}
|
|
}
|
|
|
|
} // namespace sandbox2
|