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84 lines
2.9 KiB
84 lines
2.9 KiB
7 months ago
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/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include "NetdConstants.h"
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#include "UidRanges.h"
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#include <set>
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#include <string>
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namespace android::net {
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typedef std::map<uint32_t, UidRanges> UidRangeMap;
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// A Network represents a collection of interfaces participating as a single administrative unit.
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class Network {
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public:
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// You MUST ensure that no interfaces are still assigned to this network, say by calling
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// clearInterfaces(), before deleting it. This is because interface removal may fail. If we
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// automatically removed interfaces in the destructor, you wouldn't know if it failed.
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virtual ~Network();
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virtual std::string getTypeString() const = 0;
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unsigned getNetId() const;
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bool hasInterface(const std::string& interface) const;
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const std::set<std::string>& getInterfaces() const;
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// These return 0 on success or negative errno on failure.
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[[nodiscard]] virtual int addInterface(const std::string&) { return -EINVAL; }
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[[nodiscard]] virtual int removeInterface(const std::string&) { return -EINVAL; }
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[[nodiscard]] int clearInterfaces();
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std::string toString() const;
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std::string uidRangesToString() const;
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bool appliesToUser(uid_t uid, uint32_t* subPriority) const;
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[[nodiscard]] virtual int addUsers(const UidRanges&, uint32_t /*subPriority*/) {
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return -EINVAL;
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};
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[[nodiscard]] virtual int removeUsers(const UidRanges&, uint32_t /*subPriority*/) {
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return -EINVAL;
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};
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bool isSecure() const;
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virtual bool isPhysical() { return false; }
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virtual bool isUnreachable() { return false; }
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virtual bool isVirtual() { return false; }
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virtual bool canAddUsers() { return false; }
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virtual bool isValidSubPriority(uint32_t /*priority*/) { return false; }
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virtual void addToUidRangeMap(const UidRanges& uidRanges, uint32_t subPriority);
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virtual void removeFromUidRangeMap(const UidRanges& uidRanges, uint32_t subPriority);
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protected:
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explicit Network(unsigned netId, bool mSecure = false);
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bool canAddUidRanges(const UidRanges& uidRanges, uint32_t subPriority) const;
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const unsigned mNetId;
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std::set<std::string> mInterfaces;
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// Each subsidiary priority maps to a set of UID ranges of a feature.
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std::map<uint32_t, UidRanges> mUidRangeMap;
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const bool mSecure;
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private:
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enum Action {
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REMOVE,
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ADD,
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};
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};
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} // namespace android::net
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