1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef NETD_SERVER_VIRTUAL_NETWORK_H
18#define NETD_SERVER_VIRTUAL_NETWORK_H
19
20#include "Network.h"
21#include "UidRanges.h"
22
23// A VirtualNetwork may be "secure" or not.
24//
25// A secure VPN is the usual type of VPN that grabs the default route (and thus all user traffic).
26// Only a few privileged UIDs may skip the VPN and go directly to the underlying physical network.
27//
28// A non-secure VPN ("bypassable" VPN) also grabs all user traffic by default. But all apps are
29// permitted to skip it and pick any other network for their connections.
30class VirtualNetwork : public Network {
31public:
32    VirtualNetwork(unsigned netId, bool hasDns, bool secure);
33    virtual ~VirtualNetwork();
34
35    bool getHasDns() const;
36    bool isSecure() const;
37    bool appliesToUser(uid_t uid) const;
38
39    int addUsers(const UidRanges& uidRanges) WARN_UNUSED_RESULT;
40    int removeUsers(const UidRanges& uidRanges) WARN_UNUSED_RESULT;
41
42private:
43    Type getType() const override;
44    int addInterface(const std::string& interface) override WARN_UNUSED_RESULT;
45    int removeInterface(const std::string& interface) override WARN_UNUSED_RESULT;
46
47    const bool mHasDns;
48    const bool mSecure;
49    UidRanges mUidRanges;
50};
51
52#endif  // NETD_SERVER_VIRTUAL_NETWORK_H
53