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214d9055ac
Blindly chose a cap of 10000 iterations for every loop, except for the two in script_ops.cpp and scriptnum_ops.cpp which appeared to (sometimes) be deserializing individual bytes; capped those to one million to ensure that sometimes we try working with massive scripts. There was also one fuzzer-controlled loop in timedata.cpp which was already capped, so I left that alone. git grep 'while (fuzz' should now run clean except for timedata.cpp
71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
// Copyright (c) 2021 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <netaddress.h>
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#include <netbase.h>
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#include <test/fuzz/FuzzedDataProvider.h>
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#include <test/fuzz/fuzz.h>
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#include <test/fuzz/util.h>
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#include <cstdint>
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#include <string>
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#include <vector>
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FUZZ_TARGET(netbase_dns_lookup)
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{
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FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
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const std::string name = fuzzed_data_provider.ConsumeRandomLengthString(512);
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const unsigned int max_results = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
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const bool allow_lookup = fuzzed_data_provider.ConsumeBool();
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const uint16_t default_port = fuzzed_data_provider.ConsumeIntegral<uint16_t>();
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auto fuzzed_dns_lookup_function = [&](const std::string&, bool) {
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std::vector<CNetAddr> resolved_addresses;
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LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
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resolved_addresses.push_back(ConsumeNetAddr(fuzzed_data_provider));
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}
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return resolved_addresses;
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};
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{
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std::vector<CNetAddr> resolved_addresses;
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if (LookupHost(name, resolved_addresses, max_results, allow_lookup, fuzzed_dns_lookup_function)) {
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for (const CNetAddr& resolved_address : resolved_addresses) {
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assert(!resolved_address.IsInternal());
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}
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}
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assert(resolved_addresses.size() <= max_results || max_results == 0);
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}
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{
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CNetAddr resolved_address;
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if (LookupHost(name, resolved_address, allow_lookup, fuzzed_dns_lookup_function)) {
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assert(!resolved_address.IsInternal());
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}
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}
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{
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std::vector<CService> resolved_services;
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if (Lookup(name, resolved_services, default_port, allow_lookup, max_results, fuzzed_dns_lookup_function)) {
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for (const CNetAddr& resolved_service : resolved_services) {
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assert(!resolved_service.IsInternal());
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}
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}
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assert(resolved_services.size() <= max_results || max_results == 0);
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}
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{
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CService resolved_service;
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if (Lookup(name, resolved_service, default_port, allow_lookup, fuzzed_dns_lookup_function)) {
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assert(!resolved_service.IsInternal());
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}
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}
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{
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CService resolved_service = LookupNumeric(name, default_port, fuzzed_dns_lookup_function);
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assert(!resolved_service.IsInternal());
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}
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{
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CSubNet resolved_subnet;
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if (LookupSubNet(name, resolved_subnet, fuzzed_dns_lookup_function)) {
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assert(resolved_subnet.IsValid());
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}
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}
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}
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