sandboxed-api/sandboxed_api/sandbox2/network_proxy/client.h
Wiktor Garbacz 77f62ccb1f Remove unused NetworkProxyClient::ConnectHandler
PiperOrigin-RevId: 563750900
Change-Id: Ib848aab0520032dbdcc879cb11861b133e26c4c6
2023-09-08 07:51:13 -07:00

66 lines
2.1 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
//
// https://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.
#ifndef SANDBOXED_API_SANDBOX2_NETWORK_PROXY_CLIENT_H_
#define SANDBOXED_API_SANDBOX2_NETWORK_PROXY_CLIENT_H_
#include <sys/socket.h>
#include <cstdint>
#include "absl/status/status.h"
#include "absl/synchronization/mutex.h"
#include "sandboxed_api/sandbox2/comms.h"
#include "sandboxed_api/sandbox2/util/syscall_trap.h"
namespace sandbox2 {
class NetworkProxyClient {
public:
static constexpr char kFDName[] = "sb2_networkproxy";
explicit NetworkProxyClient(int fd) : comms_(fd) {}
NetworkProxyClient(const NetworkProxyClient&) = delete;
NetworkProxyClient& operator=(const NetworkProxyClient&) = delete;
// Establishes a new network connection with semantics similar to a regular
// connect() call. Arguments are sent to network proxy server, which sends
// back a connected socket.
absl::Status Connect(int sockfd, const struct sockaddr* addr,
socklen_t addrlen);
private:
Comms comms_;
absl::Status ReceiveRemoteResult();
// Needed to make the Proxy thread safe.
absl::Mutex mutex_;
};
class NetworkProxyHandler {
public:
// Installs the handler that redirects connect() syscalls to the trap
// function. This function exchanges data with NetworkProxyServer that checks
// if this connection is allowed and sends the connected socket to us.
static absl::Status InstallNetworkProxyHandler(NetworkProxyClient* npc);
static bool ProcessSeccompTrap(int nr, SyscallTrap::Args args, uintptr_t* rv);
static NetworkProxyClient* network_proxy_client_;
};
} // namespace sandbox2
#endif // SANDBOXED_API_SANDBOX2_NETWORK_PROXY_CLIENT_H_