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// Copyright (c) 2020-2021 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 <net.h>
#include <protocol.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <optional>
#include <vector>
FUZZ_TARGET(node_eviction)
{
FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
std::vector<NodeEvictionCandidate> eviction_candidates;
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
eviction_candidates.push_back({
/*id=*/fuzzed_data_provider.ConsumeIntegral<NodeId>(),
/*m_connected=*/std::chrono::seconds{fuzzed_data_provider.ConsumeIntegral<int64_t>()},
/*m_min_ping_time=*/std::chrono::microseconds{fuzzed_data_provider.ConsumeIntegral<int64_t>()},
/*m_last_block_time=*/std::chrono::seconds{fuzzed_data_provider.ConsumeIntegral<int64_t>()},
/*m_last_tx_time=*/std::chrono::seconds{fuzzed_data_provider.ConsumeIntegral<int64_t>()},
/*fRelevantServices=*/fuzzed_data_provider.ConsumeBool(),
/*fRelayTxes=*/fuzzed_data_provider.ConsumeBool(),
/*fBloomFilter=*/fuzzed_data_provider.ConsumeBool(),
/*nKeyedNetGroup=*/fuzzed_data_provider.ConsumeIntegral<uint64_t>(),
/*prefer_evict=*/fuzzed_data_provider.ConsumeBool(),
/*m_is_local=*/fuzzed_data_provider.ConsumeBool(),
/*m_network=*/fuzzed_data_provider.PickValueInArray(ALL_NETWORKS),
});
}
// Make a copy since eviction_candidates may be in some valid but otherwise
// indeterminate state after the SelectNodeToEvict(&&) call.
const std::vector<NodeEvictionCandidate> eviction_candidates_copy = eviction_candidates;
const std::optional<NodeId> node_to_evict = SelectNodeToEvict(std::move(eviction_candidates));
if (node_to_evict) {
assert(std::any_of(eviction_candidates_copy.begin(), eviction_candidates_copy.end(), [&node_to_evict](const NodeEvictionCandidate& eviction_candidate) { return *node_to_evict == eviction_candidate.id; }));
}
}
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