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1682f0b760
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
72 lines
2 KiB
C++
72 lines
2 KiB
C++
/*
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* Copyright (c) 2020, The SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include "DHCPv4.h"
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#include <AK/HashMap.h>
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#include <AK/OwnPtr.h>
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#include <AK/Result.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <LibCore/UDPServer.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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struct InterfaceDescriptor {
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String m_ifname;
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MACAddress m_mac_address;
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IPv4Address m_current_ip_address { 0, 0, 0, 0 };
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};
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struct DHCPv4Transaction {
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DHCPv4Transaction(InterfaceDescriptor ifname)
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: interface(ifname)
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{
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}
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InterfaceDescriptor interface;
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bool accepted_offer { false };
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bool has_ip { false };
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u32 offered_lease_time { 0 };
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};
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class DHCPv4Client final : public Core::Object {
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C_OBJECT(DHCPv4Client)
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public:
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explicit DHCPv4Client(Vector<InterfaceDescriptor> ifnames_for_immediate_discover, Vector<InterfaceDescriptor> ifnames_for_later);
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virtual ~DHCPv4Client() override;
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void dhcp_discover(const InterfaceDescriptor& ifname);
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void dhcp_request(DHCPv4Transaction& transaction, const DHCPv4Packet& packet);
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void process_incoming(const DHCPv4Packet& packet);
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bool id_is_registered(u32 id) { return m_ongoing_transactions.contains(id); }
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struct Interfaces {
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Vector<InterfaceDescriptor> ready;
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Vector<InterfaceDescriptor> not_ready;
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};
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static Result<Interfaces, String> get_discoverable_interfaces();
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private:
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void try_discover_deferred_ifs();
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HashMap<u32, OwnPtr<DHCPv4Transaction>> m_ongoing_transactions;
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Vector<InterfaceDescriptor> m_ifnames_for_immediate_discover;
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Vector<InterfaceDescriptor> m_ifnames_for_later;
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RefPtr<Core::UDPServer> m_server;
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RefPtr<Core::Timer> m_fail_check_timer;
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int m_max_timer_backoff_interval { 600000 }; // 10 minutes
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void handle_offer(const DHCPv4Packet&, const ParsedDHCPv4Options&);
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void handle_ack(const DHCPv4Packet&, const ParsedDHCPv4Options&);
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void handle_nak(const DHCPv4Packet&, const ParsedDHCPv4Options&);
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};
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