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-rw-r--r--src/test/fuzz/process_message.cpp98
1 files changed, 98 insertions, 0 deletions
diff --git a/src/test/fuzz/process_message.cpp b/src/test/fuzz/process_message.cpp
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+++ b/src/test/fuzz/process_message.cpp
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+// 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 <banman.h>
+#include <chainparams.h>
+#include <consensus/consensus.h>
+#include <net.h>
+#include <net_processing.h>
+#include <protocol.h>
+#include <scheduler.h>
+#include <script/script.h>
+#include <streams.h>
+#include <test/fuzz/FuzzedDataProvider.h>
+#include <test/fuzz/fuzz.h>
+#include <test/util/mining.h>
+#include <test/util/setup_common.h>
+#include <util/memory.h>
+#include <validationinterface.h>
+#include <version.h>
+
+#include <algorithm>
+#include <atomic>
+#include <cassert>
+#include <chrono>
+#include <cstdint>
+#include <iosfwd>
+#include <iostream>
+#include <map>
+#include <memory>
+#include <set>
+#include <string>
+#include <vector>
+
+bool ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStream& vRecv, int64_t nTimeReceived, const CChainParams& chainparams, CConnman* connman, BanMan* banman, const std::atomic<bool>& interruptMsgProc);
+
+namespace {
+
+#ifdef MESSAGE_TYPE
+#define TO_STRING_(s) #s
+#define TO_STRING(s) TO_STRING_(s)
+const std::string LIMIT_TO_MESSAGE_TYPE{TO_STRING(MESSAGE_TYPE)};
+#else
+const std::string LIMIT_TO_MESSAGE_TYPE;
+#endif
+
+const std::map<std::string, std::set<std::string>> EXPECTED_DESERIALIZATION_EXCEPTIONS = {
+ {"CDataStream::read(): end of data: iostream error", {"addr", "block", "blocktxn", "cmpctblock", "feefilter", "filteradd", "filterload", "getblocks", "getblocktxn", "getdata", "getheaders", "headers", "inv", "notfound", "ping", "sendcmpct", "tx"}},
+ {"CompactSize exceeds limit of type: iostream error", {"cmpctblock"}},
+ {"differential value overflow: iostream error", {"getblocktxn"}},
+ {"index overflowed 16 bits: iostream error", {"getblocktxn"}},
+ {"index overflowed 16-bits: iostream error", {"cmpctblock"}},
+ {"indexes overflowed 16 bits: iostream error", {"getblocktxn"}},
+ {"non-canonical ReadCompactSize(): iostream error", {"addr", "block", "blocktxn", "cmpctblock", "filteradd", "filterload", "getblocks", "getblocktxn", "getdata", "getheaders", "headers", "inv", "notfound", "tx"}},
+ {"ReadCompactSize(): size too large: iostream error", {"addr", "block", "blocktxn", "cmpctblock", "filteradd", "filterload", "getblocks", "getblocktxn", "getdata", "getheaders", "headers", "inv", "notfound", "tx"}},
+ {"Superfluous witness record: iostream error", {"block", "blocktxn", "cmpctblock", "tx"}},
+ {"Unknown transaction optional data: iostream error", {"block", "blocktxn", "cmpctblock", "tx"}},
+};
+
+const RegTestingSetup* g_setup;
+} // namespace
+
+void initialize()
+{
+ static RegTestingSetup setup{};
+ g_setup = &setup;
+
+ for (int i = 0; i < 2 * COINBASE_MATURITY; i++) {
+ MineBlock(g_setup->m_node, CScript() << OP_TRUE);
+ }
+ SyncWithValidationInterfaceQueue();
+}
+
+void test_one_input(const std::vector<uint8_t>& buffer)
+{
+ FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
+ const std::string random_message_type{fuzzed_data_provider.ConsumeBytesAsString(CMessageHeader::COMMAND_SIZE).c_str()};
+ if (!LIMIT_TO_MESSAGE_TYPE.empty() && random_message_type != LIMIT_TO_MESSAGE_TYPE) {
+ return;
+ }
+ CDataStream random_bytes_data_stream{fuzzed_data_provider.ConsumeRemainingBytes<unsigned char>(), SER_NETWORK, PROTOCOL_VERSION};
+ CNode p2p_node{0, ServiceFlags(NODE_NETWORK | NODE_WITNESS | NODE_BLOOM), 0, INVALID_SOCKET, CAddress{CService{in_addr{0x0100007f}, 7777}, NODE_NETWORK}, 0, 0, CAddress{}, std::string{}, false};
+ p2p_node.fSuccessfullyConnected = true;
+ p2p_node.nVersion = PROTOCOL_VERSION;
+ p2p_node.SetSendVersion(PROTOCOL_VERSION);
+ g_setup->m_node.peer_logic->InitializeNode(&p2p_node);
+ try {
+ (void)ProcessMessage(&p2p_node, random_message_type, random_bytes_data_stream, GetTimeMillis(), Params(), g_setup->m_node.connman.get(), g_setup->m_node.banman.get(), std::atomic<bool>{false});
+ } catch (const std::ios_base::failure& e) {
+ const std::string exception_message{e.what()};
+ const auto p = EXPECTED_DESERIALIZATION_EXCEPTIONS.find(exception_message);
+ if (p == EXPECTED_DESERIALIZATION_EXCEPTIONS.cend() || p->second.count(random_message_type) == 0) {
+ std::cout << "Unexpected exception when processing message type \"" << random_message_type << "\": " << exception_message << std::endl;
+ assert(false);
+ }
+ }
+ SyncWithValidationInterfaceQueue();
+}