// Copyright (c) 2020-2022 The Bitcoin Core developers

// Distributed under the MIT software license, see the accompanying

// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <netaddress.h>

#include <test/fuzz/FuzzedDataProvider.h>

#include <test/fuzz/fuzz.h>

#include <test/fuzz/util/net.h>

#include <test/util/random.h>

#include <cassert>

#include <cstdint>

#include <vector>

FUZZ_TARGET(netaddress)

{

    SeedRandomStateForTest(SeedRand::ZEROS);

    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());

    const CNetAddr net_addr = ConsumeNetAddr(fuzzed_data_provider);

    (void)net_addr.GetNetClass();

    if (net_addr.GetNetwork() == Network::NET_IPV4) {

        assert(net_addr.IsIPv4());

    }

    if (net_addr.GetNetwork() == Network::NET_IPV6) {

        assert(net_addr.IsIPv6());

    }

    if (net_addr.GetNetwork() == Network::NET_ONION) {

        assert(net_addr.IsTor());

    }

    if (net_addr.GetNetwork() == Network::NET_I2P) {

        assert(net_addr.IsI2P());

    }

    if (net_addr.GetNetwork() == Network::NET_CJDNS) {

        assert(net_addr.IsCJDNS());

    }

    if (net_addr.GetNetwork() == Network::NET_INTERNAL) {

        assert(net_addr.IsInternal());

    }

    if (net_addr.GetNetwork() == Network::NET_UNROUTABLE) {

        assert(!net_addr.IsRoutable());

    }

    (void)net_addr.IsBindAny();

    if (net_addr.IsInternal()) {

        assert(net_addr.GetNetwork() == Network::NET_INTERNAL);

    }

    if (net_addr.IsIPv4()) {

        assert(net_addr.GetNetwork() == Network::NET_IPV4 || net_addr.GetNetwork() == Network::NET_UNROUTABLE);

    }

    if (net_addr.IsIPv6()) {

        assert(net_addr.GetNetwork() == Network::NET_IPV6 || net_addr.GetNetwork() == Network::NET_UNROUTABLE);

    }

    (void)net_addr.IsLocal();

    if (net_addr.IsRFC1918() || net_addr.IsRFC2544() || net_addr.IsRFC6598() || net_addr.IsRFC5737() || net_addr.IsRFC3927()) {

        assert(net_addr.IsIPv4());

    }

    (void)net_addr.IsRFC2544();

    if (net_addr.IsRFC3849() || net_addr.IsRFC3964() || net_addr.IsRFC4380() || net_addr.IsRFC4843() || net_addr.IsRFC7343() || net_addr.IsRFC4862() || net_addr.IsRFC6052() || net_addr.IsRFC6145()) {

        assert(net_addr.IsIPv6());

    }

    (void)net_addr.IsRFC3927();

    (void)net_addr.IsRFC3964();

    if (net_addr.IsRFC4193()) {

        assert(net_addr.GetNetwork() == Network::NET_INTERNAL || net_addr.GetNetwork() == Network::NET_UNROUTABLE);

    }

    (void)net_addr.IsRFC4380();

    (void)net_addr.IsRFC4843();

    (void)net_addr.IsRFC4862();

    (void)net_addr.IsRFC5737();

    (void)net_addr.IsRFC6052();

    (void)net_addr.IsRFC6145();

    (void)net_addr.IsRFC6598();

    (void)net_addr.IsRFC7343();

    if (!net_addr.IsRoutable()) {

        assert(net_addr.GetNetwork() == Network::NET_UNROUTABLE || net_addr.GetNetwork() == Network::NET_INTERNAL);

    }

    if (net_addr.IsTor()) {

        assert(net_addr.GetNetwork() == Network::NET_ONION);

    }

    if (net_addr.IsI2P()) {

        assert(net_addr.GetNetwork() == Network::NET_I2P);

    }

    if (net_addr.IsCJDNS()) {

        assert(net_addr.GetNetwork() == Network::NET_CJDNS);

    }

    (void)net_addr.IsValid();

    (void)net_addr.ToStringAddr();

    const CSubNet sub_net{net_addr, fuzzed_data_provider.ConsumeIntegral<uint8_t>()};

    (void)sub_net.IsValid();

    (void)sub_net.ToString();

    const CService service{net_addr, fuzzed_data_provider.ConsumeIntegral<uint16_t>()};

    (void)service.GetKey();

    (void)service.GetPort();

    (void)service.ToStringAddrPort();

    (void)CServiceHash()(service);

    (void)CServiceHash(0, 0)(service);

    const CNetAddr other_net_addr = ConsumeNetAddr(fuzzed_data_provider);

    (void)net_addr.GetReachabilityFrom(other_net_addr);

    (void)sub_net.Match(other_net_addr);

    const CService other_service{fuzzed_data_provider.ConsumeBool() ? net_addr : other_net_addr, fuzzed_data_provider.ConsumeIntegral<uint16_t>()};

    assert((service == other_service) != (service != other_service));

    (void)(service < other_service);

    if (service.ToStringAddrPort() == other_service.ToStringAddrPort()) {

        assert(static_cast<CNetAddr>(service) == static_cast<CNetAddr>(other_service));

    }

    const CSubNet sub_net_copy_1{net_addr, other_net_addr};

    const CSubNet sub_net_copy_2{net_addr};

    CNetAddr mutable_net_addr;

    mutable_net_addr.SetIP(net_addr);

    assert(net_addr == mutable_net_addr);

}