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fuzz: Avoid initializing version to less than MIN_PEER_PROTO_VERSION

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MarcoFalke 2021-01-23 19:39:30 +01:00
parent fa99e33aeb
commit fad3d7625a
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GPG key ID: CE2B75697E69A548
4 changed files with 16 additions and 10 deletions
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6
src/test/fuzz/process_message.cpp
View file

@ -60,10 +60,12 @@ void fuzz_target(const std::vector<uint8_t>& buffer, const std::string& LIMIT_TO
return;
}
CNode& p2p_node = *ConsumeNodeAsUniquePtr(fuzzed_data_provider).release();
FillNode(fuzzed_data_provider, p2p_node);
p2p_node.fSuccessfullyConnected = true;
const bool successfully_connected{true};
p2p_node.fSuccessfullyConnected = successfully_connected;
connman.AddTestNode(p2p_node);
g_setup->m_node.peerman->InitializeNode(&p2p_node);
FillNode(fuzzed_data_provider, p2p_node, /* init_version */ successfully_connected);
const auto mock_time = ConsumeTime(fuzzed_data_provider);
SetMockTime(mock_time);

5
src/test/fuzz/process_messages.cpp
View file

@ -45,11 +45,12 @@ FUZZ_TARGET_INIT(process_messages, initialize_process_messages)
for (int i = 0; i < num_peers_to_add; ++i) {
peers.push_back(ConsumeNodeAsUniquePtr(fuzzed_data_provider, i).release());
CNode& p2p_node = *peers.back();
FillNode(fuzzed_data_provider, p2p_node);
p2p_node.fSuccessfullyConnected = true;
const bool successfully_connected{true};
p2p_node.fSuccessfullyConnected = successfully_connected;
p2p_node.fPauseSend = false;
g_setup->m_node.peerman->InitializeNode(&p2p_node);
FillNode(fuzzed_data_provider, p2p_node, /* init_version */ successfully_connected);
connman.AddTestNode(p2p_node);
}

11
src/test/fuzz/util.cpp
View file

@ -3,18 +3,21 @@
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <test/fuzz/util.h>
#include <version.h>
void FillNode(FuzzedDataProvider& fuzzed_data_provider, CNode& node, const std::optional<int32_t>& version_in) noexcept
void FillNode(FuzzedDataProvider& fuzzed_data_provider, CNode& node, bool init_version) noexcept
{
const ServiceFlags remote_services = ConsumeWeakEnum(fuzzed_data_provider, ALL_SERVICE_FLAGS);
const NetPermissionFlags permission_flags = ConsumeWeakEnum(fuzzed_data_provider, ALL_NET_PERMISSION_FLAGS);
const int32_t version = version_in.value_or(fuzzed_data_provider.ConsumeIntegral<int32_t>());
const int32_t version = fuzzed_data_provider.ConsumeIntegralInRange<int32_t>(MIN_PEER_PROTO_VERSION, std::numeric_limits<int32_t>::max());
const bool filter_txs = fuzzed_data_provider.ConsumeBool();
node.nServices = remote_services;
node.m_permissionFlags = permission_flags;
node.nVersion = version;
node.SetCommonVersion(version);
if (init_version) {
node.nVersion = version;
node.SetCommonVersion(std::min(version, PROTOCOL_VERSION));
}
if (node.m_tx_relay != nullptr) {
LOCK(node.m_tx_relay->cs_filter);
node.m_tx_relay->fRelayTxes = filter_txs;

4
src/test/fuzz/util.h
View file

@ -320,9 +320,9 @@ auto ConsumeNode(FuzzedDataProvider& fuzzed_data_provider, const std::optional<N
return CNode{node_id, local_services, socket, address, keyed_net_group, local_host_nonce, addr_bind, addr_name, conn_type, inbound_onion};
}
}
inline std::unique_ptr<CNode> ConsumeNodeAsUniquePtr(FuzzedDataProvider& fdp, const std::optional<NodeId>& node_id_in = nullopt) { return ConsumeNode<true>(fdp, node_id_in); }
inline std::unique_ptr<CNode> ConsumeNodeAsUniquePtr(FuzzedDataProvider& fdp, const std::optional<NodeId>& node_id_in = std::nullopt) { return ConsumeNode<true>(fdp, node_id_in); }
void FillNode(FuzzedDataProvider& fuzzed_data_provider, CNode& node, const std::optional<int32_t>& version_in = std::nullopt) noexcept;
void FillNode(FuzzedDataProvider& fuzzed_data_provider, CNode& node, bool init_version) noexcept;
template <class T = const BasicTestingSetup>
std::unique_ptr<T> MakeFuzzingContext(const std::string& chain_name = CBaseChainParams::REGTEST, const std::vector<const char*>& extra_args = {})