partial bitcoin#18047: Add basic fuzzing harness for CNetAddr/CService/CSubNet related functions (netaddress.h)

This commit is contained in:
Kittywhiskers Van Gogh 2022-05-07 13:39:56 +05:30
parent 09825e4678
commit 0d5a7929ac
3 changed files with 128 additions and 0 deletions

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@ -56,6 +56,7 @@ FUZZ_TARGETS = \
test/fuzz/multiplication_overflow \
test/fuzz/net_permissions \
test/fuzz/netaddr_deserialize \
test/fuzz/netaddress \
test/fuzz/out_point_deserialize \
test/fuzz/p2p_transport_deserializer \
test/fuzz/parse_hd_keypath \
@ -599,6 +600,12 @@ test_fuzz_netaddr_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_netaddr_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) $(LDFLAGS_WRAP_EXCEPTIONS)
test_fuzz_netaddr_deserialize_SOURCES = $(FUZZ_SUITE) test/fuzz/deserialize.cpp
test_fuzz_netaddress_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_netaddress_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_netaddress_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_netaddress_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) $(LDFLAGS_WRAP_EXCEPTIONS)
test_fuzz_netaddress_SOURCES = $(FUZZ_SUITE) test/fuzz/netaddress.cpp
test_fuzz_out_point_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DOUT_POINT_DESERIALIZE=1
test_fuzz_out_point_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_out_point_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)

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@ -0,0 +1,120 @@
// Copyright (c) 2020 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 <cassert>
#include <cstdint>
#include <netinet/in.h>
#include <vector>
namespace {
CNetAddr ConsumeNetAddr(FuzzedDataProvider& fuzzed_data_provider) noexcept
{
const Network network = fuzzed_data_provider.PickValueInArray({Network::NET_IPV4, Network::NET_IPV6, Network::NET_INTERNAL, Network::NET_ONION});
if (network == Network::NET_IPV4) {
const in_addr v4_addr = {
.s_addr = fuzzed_data_provider.ConsumeIntegral<uint32_t>()};
return CNetAddr{v4_addr};
} else if (network == Network::NET_IPV6) {
if (fuzzed_data_provider.remaining_bytes() < 16) {
return CNetAddr{};
}
in6_addr v6_addr = {};
memcpy(v6_addr.s6_addr, fuzzed_data_provider.ConsumeBytes<uint8_t>(16).data(), 16);
return CNetAddr{v6_addr, fuzzed_data_provider.ConsumeIntegral<uint32_t>()};
} else if (network == Network::NET_INTERNAL) {
CNetAddr net_addr;
net_addr.SetInternal(fuzzed_data_provider.ConsumeBytesAsString(32));
return net_addr;
} else if (network == Network::NET_ONION) {
CNetAddr net_addr;
net_addr.SetSpecial(fuzzed_data_provider.ConsumeBytesAsString(32));
return net_addr;
} else {
assert(false);
}
}
}; // namespace
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const CNetAddr net_addr = ConsumeNetAddr(fuzzed_data_provider);
(void)net_addr.GetHash();
(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_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_ONION || 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);
}
(void)net_addr.IsValid();
(void)net_addr.ToString();
(void)net_addr.ToStringIP();
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.ToString();
(void)service.ToStringIPPort();
(void)service.ToStringPort();
const CNetAddr other_net_addr = ConsumeNetAddr(fuzzed_data_provider);
(void)net_addr.GetReachabilityFrom(&other_net_addr);
(void)sub_net.Match(other_net_addr);
}

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@ -33,6 +33,7 @@ FUZZERS_MISSING_CORPORA = [
"key_origin_info_deserialize",
"locale",
"merkle_block_deserialize",
"netaddress",
"out_point_deserialize",
"p2p_transport_deserializer",
"parse_hd_keypath",