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fuzz: call lookup functions before calling Ban

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Also, compare banmaps only if there are no invalid
entries.
This commit is contained in:
brunoerg 2023-06-22 15:00:56 -03:00
parent 4458ae811a
commit f9b286353f
1 changed files with 18 additions and 5 deletions
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21
src/test/fuzz/banman.cpp
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@ -63,17 +63,28 @@ FUZZ_TARGET(banman, .init = initialize_banman)
// The complexity is O(N^2), where N is the input size, because each call // The complexity is O(N^2), where N is the input size, because each call
// might call DumpBanlist (or other methods that are at least linear // might call DumpBanlist (or other methods that are at least linear
// complexity of the input size). // complexity of the input size).
bool contains_invalid{false};
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 300) LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 300)
{ {
CallOneOf( CallOneOf(
fuzzed_data_provider, fuzzed_data_provider,
[&] { [&] {
ban_man.Ban(ConsumeNetAddr(fuzzed_data_provider), CNetAddr net_addr{ConsumeNetAddr(fuzzed_data_provider)};
ConsumeBanTimeOffset(fuzzed_data_provider), fuzzed_data_provider.ConsumeBool()); const std::optional<CNetAddr>& addr{LookupHost(net_addr.ToStringAddr(), /*fAllowLookup=*/false)};
if (addr.has_value() && addr->IsValid()) {
net_addr = *addr;
} else {
contains_invalid = true;
}
ban_man.Ban(net_addr, ConsumeBanTimeOffset(fuzzed_data_provider), fuzzed_data_provider.ConsumeBool());
}, },
[&] { [&] {
ban_man.Ban(ConsumeSubNet(fuzzed_data_provider), CSubNet subnet{ConsumeSubNet(fuzzed_data_provider)};
ConsumeBanTimeOffset(fuzzed_data_provider), fuzzed_data_provider.ConsumeBool()); subnet = LookupSubNet(subnet.ToString());
if (!subnet.IsValid()) {
contains_invalid = true;
}
ban_man.Ban(subnet, ConsumeBanTimeOffset(fuzzed_data_provider), fuzzed_data_provider.ConsumeBool());
}, },
[&] { [&] {
ban_man.ClearBanned(); ban_man.ClearBanned();
@ -109,8 +120,10 @@ FUZZ_TARGET(banman, .init = initialize_banman)
BanMan ban_man_read{banlist_file, /*client_interface=*/nullptr, /*default_ban_time=*/0}; BanMan ban_man_read{banlist_file, /*client_interface=*/nullptr, /*default_ban_time=*/0};
banmap_t banmap_read; banmap_t banmap_read;
ban_man_read.GetBanned(banmap_read); ban_man_read.GetBanned(banmap_read);
if (!contains_invalid) {
assert(banmap == banmap_read); assert(banmap == banmap_read);
} }
} }
}
fs::remove(fs::PathToString(banlist_file + ".json")); fs::remove(fs::PathToString(banlist_file + ".json"));
} }