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/*
* Copyright (c) 2020, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "DHCPv4.h"
#include <AK/Error.h>
#include <AK/HashMap.h>
#include <AK/OwnPtr.h>
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibCore/UDPServer.h>
#include <net/if.h>
#include <net/route.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
struct InterfaceDescriptor {
String ifname;
MACAddress mac_address;
IPv4Address current_ip_address;
};
struct DHCPv4Transaction {
DHCPv4Transaction(InterfaceDescriptor ifname)
: interface(ifname)
{
}
InterfaceDescriptor interface;
bool accepted_offer { false };
bool has_ip { false };
u32 offered_lease_time { 0 };
};
class DHCPv4Client final : public Core::Object {
C_OBJECT(DHCPv4Client)
public:
virtual ~DHCPv4Client() override = default;
void dhcp_discover(InterfaceDescriptor const& ifname);
void dhcp_request(DHCPv4Transaction& transaction, DHCPv4Packet const& packet);
void process_incoming(DHCPv4Packet const& packet);
bool id_is_registered(u32 id) { return m_ongoing_transactions.contains(id); }
struct Interfaces {
Vector<InterfaceDescriptor> ready;
Vector<InterfaceDescriptor> not_ready;
};
static ErrorOr<Interfaces> get_discoverable_interfaces();
private:
explicit DHCPv4Client();
void try_discover_ifs();
HashMap<u32, OwnPtr<DHCPv4Transaction>> m_ongoing_transactions;
RefPtr<Core::UDPServer> m_server;
RefPtr<Core::Timer> m_check_timer;
int m_max_timer_backoff_interval { 600000 }; // 10 minutes
void handle_offer(DHCPv4Packet const&, ParsedDHCPv4Options const&);
void handle_ack(DHCPv4Packet const&, ParsedDHCPv4Options const&);
void handle_nak(DHCPv4Packet const&, ParsedDHCPv4Options const&);
};
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