| /* |
| * 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. |
| */ |
| #pragma once |
| |
| #include <string> |
| #include <vector> |
| |
| #include "interface.h" |
| #include "router.h" |
| |
| struct pollfd; |
| class Message; |
| class Packet; |
| class Socket; |
| |
| class Proxy { |
| public: |
| template<typename Iter> |
| Proxy(std::string outerInterfaceName, |
| Iter innerInterfacesBegin, Iter innerInterfacesEnd) |
| : mOuterIf(outerInterfaceName), |
| mLogDebug(false) { |
| |
| for (Iter i = innerInterfacesBegin; i != innerInterfacesEnd; ++i) { |
| mInnerIfs.emplace_back(*i); |
| } |
| } |
| |
| int run(); |
| |
| private: |
| enum ForwardOpt { |
| kForwardOnly = 0, |
| kRewriteTargetLink = (1 << 0), |
| kRewriteSourceLink = (1 << 1), |
| kSpoofSource = (1 << 2), |
| kAddRoute = (1 << 3), |
| kSetDefaultGateway = (1 << 4) |
| }; |
| |
| bool receiveIfPossible(const pollfd&, Socket& socket, Message* message); |
| |
| void handleOuterMessage(Message& message); |
| void handleInnerMessage(const Interface& inner, Message& message); |
| void forward(const Interface& from, Interface& to, |
| Packet& packet, uint32_t options); |
| |
| std::vector<Interface> mInnerIfs; |
| Interface mOuterIf; |
| |
| Router mRouter; |
| bool mLogDebug; |
| }; |
| |