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53 lines
1.6 KiB
53 lines
1.6 KiB
/*
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* Copyright (C) 2019 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 <cstddef>
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#include <set>
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#include <string>
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#include <vector>
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#include "common/libs/fs/shared_fd.h"
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namespace cuttlefish {
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// Creates, or connects to if it already exists, a tap network interface. The
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// user needs CAP_NET_ADMIN to create such interfaces or be the owner to connect
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// to one.
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SharedFD OpenTapInterface(const std::string& interface_name);
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// Returns a list of TAP devices that have open file descriptors
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std::set<std::string> TapInterfacesInUse();
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struct DnsmasqDhcp4Lease {
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std::uint64_t expiry;
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std::uint8_t mac_address[6];
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std::uint8_t ip_address[4];
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std::string hostname;
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std::string client_id;
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};
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// Parses a dnsmasq lease file
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std::vector<DnsmasqDhcp4Lease> ParseDnsmasqLeases(SharedFD lease_file);
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std::ostream& operator<<(std::ostream&, const DnsmasqDhcp4Lease&);
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// Sends a DHCPRELEASE message over the socket;
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bool ReleaseDhcp4(SharedFD tap, const std::uint8_t mac_address[6],
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const std::uint8_t ip_address[4],
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const std::uint8_t dhcp_server_ip[4]);
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}
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