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| 1 | +// Copyright (c) 2020 The Bitcoin Core developers |
| 2 | +// Distributed under the MIT software license, see the accompanying |
| 3 | +// file COPYING or http://www.opensource.org/licenses/mit-license.php. |
| 4 | + |
| 5 | +#include <netaddress.h> |
| 6 | +#include <test/fuzz/FuzzedDataProvider.h> |
| 7 | +#include <test/fuzz/fuzz.h> |
| 8 | + |
| 9 | +#include <cassert> |
| 10 | +#include <cstdint> |
| 11 | +#include <netinet/in.h> |
| 12 | +#include <vector> |
| 13 | + |
| 14 | +namespace { |
| 15 | +CNetAddr ConsumeNetAddr(FuzzedDataProvider& fuzzed_data_provider) noexcept |
| 16 | +{ |
| 17 | + const Network network = fuzzed_data_provider.PickValueInArray({Network::NET_IPV4, Network::NET_IPV6, Network::NET_INTERNAL, Network::NET_ONION}); |
| 18 | + if (network == Network::NET_IPV4) { |
| 19 | + const in_addr v4_addr = { |
| 20 | + .s_addr = fuzzed_data_provider.ConsumeIntegral<uint32_t>()}; |
| 21 | + return CNetAddr{v4_addr}; |
| 22 | + } else if (network == Network::NET_IPV6) { |
| 23 | + if (fuzzed_data_provider.remaining_bytes() < 16) { |
| 24 | + return CNetAddr{}; |
| 25 | + } |
| 26 | + in6_addr v6_addr = {}; |
| 27 | + memcpy(v6_addr.s6_addr, fuzzed_data_provider.ConsumeBytes<uint8_t>(16).data(), 16); |
| 28 | + return CNetAddr{v6_addr, fuzzed_data_provider.ConsumeIntegral<uint32_t>()}; |
| 29 | + } else if (network == Network::NET_INTERNAL) { |
| 30 | + CNetAddr net_addr; |
| 31 | + net_addr.SetInternal(fuzzed_data_provider.ConsumeBytesAsString(32)); |
| 32 | + return net_addr; |
| 33 | + } else if (network == Network::NET_ONION) { |
| 34 | + CNetAddr net_addr; |
| 35 | + net_addr.SetSpecial(fuzzed_data_provider.ConsumeBytesAsString(32)); |
| 36 | + return net_addr; |
| 37 | + } else { |
| 38 | + assert(false); |
| 39 | + } |
| 40 | +} |
| 41 | +}; // namespace |
| 42 | + |
| 43 | +void test_one_input(const std::vector<uint8_t>& buffer) |
| 44 | +{ |
| 45 | + FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size()); |
| 46 | + |
| 47 | + const CNetAddr net_addr = ConsumeNetAddr(fuzzed_data_provider); |
| 48 | + for (int i = 0; i < 15; ++i) { |
| 49 | + (void)net_addr.GetByte(i); |
| 50 | + } |
| 51 | + (void)net_addr.GetHash(); |
| 52 | + (void)net_addr.GetNetClass(); |
| 53 | + if (net_addr.GetNetwork() == Network::NET_IPV4) { |
| 54 | + assert(net_addr.IsIPv4()); |
| 55 | + } |
| 56 | + if (net_addr.GetNetwork() == Network::NET_IPV6) { |
| 57 | + assert(net_addr.IsIPv6()); |
| 58 | + } |
| 59 | + if (net_addr.GetNetwork() == Network::NET_ONION) { |
| 60 | + assert(net_addr.IsTor()); |
| 61 | + } |
| 62 | + if (net_addr.GetNetwork() == Network::NET_INTERNAL) { |
| 63 | + assert(net_addr.IsInternal()); |
| 64 | + } |
| 65 | + if (net_addr.GetNetwork() == Network::NET_UNROUTABLE) { |
| 66 | + assert(!net_addr.IsRoutable()); |
| 67 | + } |
| 68 | + (void)net_addr.IsBindAny(); |
| 69 | + if (net_addr.IsInternal()) { |
| 70 | + assert(net_addr.GetNetwork() == Network::NET_INTERNAL); |
| 71 | + } |
| 72 | + if (net_addr.IsIPv4()) { |
| 73 | + assert(net_addr.GetNetwork() == Network::NET_IPV4 || net_addr.GetNetwork() == Network::NET_UNROUTABLE); |
| 74 | + } |
| 75 | + if (net_addr.IsIPv6()) { |
| 76 | + assert(net_addr.GetNetwork() == Network::NET_IPV6 || net_addr.GetNetwork() == Network::NET_UNROUTABLE); |
| 77 | + } |
| 78 | + (void)net_addr.IsLocal(); |
| 79 | + if (net_addr.IsRFC1918() || net_addr.IsRFC2544() || net_addr.IsRFC6598() || net_addr.IsRFC5737() || net_addr.IsRFC3927()) { |
| 80 | + assert(net_addr.IsIPv4()); |
| 81 | + } |
| 82 | + (void)net_addr.IsRFC2544(); |
| 83 | + 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()) { |
| 84 | + assert(net_addr.IsIPv6()); |
| 85 | + } |
| 86 | + (void)net_addr.IsRFC3927(); |
| 87 | + (void)net_addr.IsRFC3964(); |
| 88 | + if (net_addr.IsRFC4193()) { |
| 89 | + assert(net_addr.GetNetwork() == Network::NET_ONION || net_addr.GetNetwork() == Network::NET_INTERNAL || net_addr.GetNetwork() == Network::NET_UNROUTABLE); |
| 90 | + } |
| 91 | + (void)net_addr.IsRFC4380(); |
| 92 | + (void)net_addr.IsRFC4843(); |
| 93 | + (void)net_addr.IsRFC4862(); |
| 94 | + (void)net_addr.IsRFC5737(); |
| 95 | + (void)net_addr.IsRFC6052(); |
| 96 | + (void)net_addr.IsRFC6145(); |
| 97 | + (void)net_addr.IsRFC6598(); |
| 98 | + (void)net_addr.IsRFC7343(); |
| 99 | + if (!net_addr.IsRoutable()) { |
| 100 | + assert(net_addr.GetNetwork() == Network::NET_UNROUTABLE || net_addr.GetNetwork() == Network::NET_INTERNAL); |
| 101 | + } |
| 102 | + if (net_addr.IsTor()) { |
| 103 | + assert(net_addr.GetNetwork() == Network::NET_ONION); |
| 104 | + } |
| 105 | + (void)net_addr.IsValid(); |
| 106 | + (void)net_addr.ToString(); |
| 107 | + (void)net_addr.ToStringIP(); |
| 108 | + |
| 109 | + const CSubNet sub_net{net_addr, fuzzed_data_provider.ConsumeIntegral<int32_t>()}; |
| 110 | + (void)sub_net.IsValid(); |
| 111 | + (void)sub_net.ToString(); |
| 112 | + |
| 113 | + const CService service{net_addr, fuzzed_data_provider.ConsumeIntegral<uint16_t>()}; |
| 114 | + (void)service.GetKey(); |
| 115 | + (void)service.GetPort(); |
| 116 | + (void)service.ToString(); |
| 117 | + (void)service.ToStringIPPort(); |
| 118 | + (void)service.ToStringPort(); |
| 119 | + |
| 120 | + const CNetAddr other_net_addr = ConsumeNetAddr(fuzzed_data_provider); |
| 121 | + (void)net_addr.GetReachabilityFrom(&other_net_addr); |
| 122 | + (void)sub_net.Match(other_net_addr); |
| 123 | +} |
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