1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Copyright (C) 2014 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 "NetdConstants.h"
#include "UidRanges.h"
#include <set>
#include <string>
namespace android::net {
typedef std::map<uint32_t, UidRanges> UidRangeMap;
// A Network represents a collection of interfaces participating as a single administrative unit.
class Network {
public:
// You MUST ensure that no interfaces are still assigned to this network, say by calling
// clearInterfaces(), before deleting it. This is because interface removal may fail. If we
// automatically removed interfaces in the destructor, you wouldn't know if it failed.
virtual ~Network();
virtual std::string getTypeString() const = 0;
unsigned getNetId() const;
bool hasInterface(const std::string& interface) const;
const std::set<std::string>& getInterfaces() const;
// These return 0 on success or negative errno on failure.
[[nodiscard]] virtual int addInterface(const std::string&) { return -EINVAL; }
[[nodiscard]] virtual int removeInterface(const std::string&) { return -EINVAL; }
[[nodiscard]] int clearInterfaces();
std::string toString() const;
std::string uidRangesToString() const;
bool appliesToUser(uid_t uid, uint32_t* subPriority) const;
[[nodiscard]] virtual int addUsers(const UidRanges&, uint32_t /*subPriority*/) {
return -EINVAL;
};
[[nodiscard]] virtual int removeUsers(const UidRanges&, uint32_t /*subPriority*/) {
return -EINVAL;
};
bool isSecure() const;
virtual bool isPhysical() { return false; }
virtual bool isUnreachable() { return false; }
virtual bool isVirtual() { return false; }
virtual bool canAddUsers() { return false; }
virtual bool isValidSubPriority(uint32_t /*priority*/) { return false; }
virtual void addToUidRangeMap(const UidRanges& uidRanges, uint32_t subPriority);
virtual void removeFromUidRangeMap(const UidRanges& uidRanges, uint32_t subPriority);
protected:
explicit Network(unsigned netId, bool mSecure = false);
bool canAddUidRanges(const UidRanges& uidRanges, uint32_t subPriority) const;
const unsigned mNetId;
std::set<std::string> mInterfaces;
// Each subsidiary priority maps to a set of UID ranges of a feature.
std::map<uint32_t, UidRanges> mUidRangeMap;
const bool mSecure;
private:
enum Action {
REMOVE,
ADD,
};
};
} // namespace android::net
|
