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merge bitcoin#22029: Improve transport deserialization fuzz test coverage
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@ -287,7 +287,7 @@ test_fuzz_fuzz_SOURCES = \
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test/fuzz/net_permissions.cpp \
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test/fuzz/netaddress.cpp \
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test/fuzz/netbase_dns_lookup.cpp \
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test/fuzz/p2p_transport_deserializer.cpp \
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test/fuzz/p2p_transport_serialization.cpp \
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test/fuzz/parse_hd_keypath.cpp \
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test/fuzz/parse_iso8601.cpp \
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test/fuzz/parse_numbers.cpp \
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@ -1,43 +0,0 @@
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// Copyright (c) 2019 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 <chainparams.h>
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#include <net.h>
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#include <protocol.h>
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#include <test/fuzz/fuzz.h>
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#include <cassert>
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#include <cstdint>
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#include <limits>
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#include <optional>
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#include <vector>
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void initialize_p2p_transport_deserializer()
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{
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SelectParams(CBaseChainParams::REGTEST);
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}
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FUZZ_TARGET_INIT(p2p_transport_deserializer, initialize_p2p_transport_deserializer)
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{
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// Construct deserializer, with a dummy NodeId
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V1TransportDeserializer deserializer{Params(), (NodeId)0, SER_NETWORK, INIT_PROTO_VERSION};
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Span<const uint8_t> msg_bytes{buffer};
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while (msg_bytes.size() > 0) {
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const int handled = deserializer.Read(msg_bytes);
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if (handled < 0) {
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break;
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}
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if (deserializer.Complete()) {
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const int64_t m_time = std::numeric_limits<int64_t>::max();
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uint32_t out_err_raw_size{0};
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std::optional<CNetMessage> result{deserializer.GetMessage(m_time, out_err_raw_size)};
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if (result) {
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assert(result->m_command.size() <= CMessageHeader::COMMAND_SIZE);
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assert(result->m_raw_message_size <= buffer.size());
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assert(result->m_raw_message_size == CMessageHeader::HEADER_SIZE + result->m_message_size);
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assert(result->m_time == m_time);
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}
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}
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}
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}
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85
src/test/fuzz/p2p_transport_serialization.cpp
Normal file
85
src/test/fuzz/p2p_transport_serialization.cpp
Normal file
@ -0,0 +1,85 @@
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// Copyright (c) 2019 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 <chainparams.h>
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#include <hash.h>
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#include <net.h>
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#include <netmessagemaker.h>
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#include <protocol.h>
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#include <test/fuzz/FuzzedDataProvider.h>
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#include <test/fuzz/fuzz.h>
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#include <cassert>
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#include <cstdint>
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#include <limits>
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#include <optional>
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#include <vector>
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void initialize_p2p_transport_serialization()
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{
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SelectParams(CBaseChainParams::REGTEST);
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}
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FUZZ_TARGET_INIT(p2p_transport_serialization, initialize_p2p_transport_serialization)
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{
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// Construct deserializer, with a dummy NodeId
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V1TransportDeserializer deserializer{Params(), (NodeId)0, SER_NETWORK, INIT_PROTO_VERSION};
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V1TransportSerializer serializer{};
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FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
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auto checksum_assist = fuzzed_data_provider.ConsumeBool();
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auto magic_bytes_assist = fuzzed_data_provider.ConsumeBool();
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std::vector<uint8_t> mutable_msg_bytes;
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auto header_bytes_remaining = CMessageHeader::HEADER_SIZE;
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if (magic_bytes_assist) {
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auto msg_start = Params().MessageStart();
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for (size_t i = 0; i < CMessageHeader::MESSAGE_SIZE_SIZE; ++i) {
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mutable_msg_bytes.push_back(msg_start[i]);
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}
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header_bytes_remaining -= CMessageHeader::MESSAGE_SIZE_SIZE;
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}
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if (checksum_assist) {
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header_bytes_remaining -= CMessageHeader::CHECKSUM_SIZE;
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}
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auto header_random_bytes = fuzzed_data_provider.ConsumeBytes<uint8_t>(header_bytes_remaining);
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mutable_msg_bytes.insert(mutable_msg_bytes.end(), header_random_bytes.begin(), header_random_bytes.end());
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auto payload_bytes = fuzzed_data_provider.ConsumeRemainingBytes<uint8_t>();
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if (checksum_assist && mutable_msg_bytes.size() == CMessageHeader::CHECKSUM_OFFSET) {
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CHash256 hasher;
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unsigned char hsh[32];
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hasher.Write(payload_bytes);
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hasher.Finalize(hsh);
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for (size_t i = 0; i < CMessageHeader::CHECKSUM_SIZE; ++i) {
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mutable_msg_bytes.push_back(hsh[i]);
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}
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}
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mutable_msg_bytes.insert(mutable_msg_bytes.end(), payload_bytes.begin(), payload_bytes.end());
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Span<const uint8_t> msg_bytes{mutable_msg_bytes};
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while (msg_bytes.size() > 0) {
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const int handled = deserializer.Read(msg_bytes);
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if (handled < 0) {
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break;
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}
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if (deserializer.Complete()) {
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const int64_t m_time = std::numeric_limits<int64_t>::max();
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uint32_t out_err_raw_size{0};
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std::optional<CNetMessage> result{deserializer.GetMessage(m_time, out_err_raw_size)};
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if (result) {
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assert(result->m_command.size() <= CMessageHeader::COMMAND_SIZE);
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assert(result->m_raw_message_size <= mutable_msg_bytes.size());
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assert(result->m_raw_message_size == CMessageHeader::HEADER_SIZE + result->m_message_size);
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assert(result->m_time == m_time);
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std::vector<unsigned char> header;
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auto msg = CNetMsgMaker{result->m_recv.GetVersion()}.Make(result->m_command, MakeUCharSpan(result->m_recv));
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serializer.prepareForTransport(msg, header);
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}
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}
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}
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}
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