// Copyright (c) 2012-2019 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 #include #include #include #include #include #include #include #include #include #include #include class CAddrManSerializationMock : public CAddrMan { public: virtual void Serialize(CDataStream& s) const = 0; //! Ensure that bucket placement is always the same for testing purposes. void MakeDeterministic() { nKey.SetNull(); insecure_rand = FastRandomContext(true); } }; class CAddrManUncorrupted : public CAddrManSerializationMock { public: void Serialize(CDataStream& s) const override { CAddrMan::Serialize(s); } }; class CAddrManCorrupted : public CAddrManSerializationMock { public: void Serialize(CDataStream& s) const override { // Produces corrupt output that claims addrman has 20 addrs when it only has one addr. unsigned char nVersion = 1; s << nVersion; s << ((unsigned char)32); s << nKey; s << 10; // nNew s << 10; // nTried int nUBuckets = ADDRMAN_NEW_BUCKET_COUNT ^ (1 << 30); s << nUBuckets; CService serv; BOOST_CHECK(Lookup("252.1.1.1", serv, 7777, false)); CAddress addr = CAddress(serv, NODE_NONE); CNetAddr resolved; BOOST_CHECK(LookupHost("252.2.2.2", resolved, false)); CAddrInfo info = CAddrInfo(addr, resolved); s << info; } }; static CDataStream AddrmanToStream(CAddrManSerializationMock& _addrman) { CDataStream ssPeersIn(SER_DISK, CLIENT_VERSION); ssPeersIn << Params().MessageStart(); ssPeersIn << _addrman; std::string str = ssPeersIn.str(); std::vector vchData(str.begin(), str.end()); return CDataStream(vchData, SER_DISK, CLIENT_VERSION); } BOOST_FIXTURE_TEST_SUITE(net_tests, BasicTestingSetup) BOOST_AUTO_TEST_CASE(cnode_listen_port) { // test default unsigned short port = GetListenPort(); BOOST_CHECK(port == Params().GetDefaultPort()); // test set port unsigned short altPort = 12345; BOOST_CHECK(gArgs.SoftSetArg("-port", std::to_string(altPort))); port = GetListenPort(); BOOST_CHECK(port == altPort); } BOOST_AUTO_TEST_CASE(caddrdb_read) { CAddrManUncorrupted addrmanUncorrupted; addrmanUncorrupted.MakeDeterministic(); CService addr1, addr2, addr3; BOOST_CHECK(Lookup("250.7.1.1", addr1, 8333, false)); BOOST_CHECK(Lookup("250.7.2.2", addr2, 9999, false)); BOOST_CHECK(Lookup("250.7.3.3", addr3, 9999, false)); // Add three addresses to new table. CService source; BOOST_CHECK(Lookup("252.5.1.1", source, 8333, false)); BOOST_CHECK(addrmanUncorrupted.Add(CAddress(addr1, NODE_NONE), source)); BOOST_CHECK(addrmanUncorrupted.Add(CAddress(addr2, NODE_NONE), source)); BOOST_CHECK(addrmanUncorrupted.Add(CAddress(addr3, NODE_NONE), source)); // Test that the de-serialization does not throw an exception. CDataStream ssPeers1 = AddrmanToStream(addrmanUncorrupted); bool exceptionThrown = false; CAddrMan addrman1; BOOST_CHECK(addrman1.size() == 0); try { unsigned char pchMsgTmp[4]; ssPeers1 >> pchMsgTmp; ssPeers1 >> addrman1; } catch (const std::exception&) { exceptionThrown = true; } BOOST_CHECK(addrman1.size() == 3); BOOST_CHECK(exceptionThrown == false); // Test that CAddrDB::Read creates an addrman with the correct number of addrs. CDataStream ssPeers2 = AddrmanToStream(addrmanUncorrupted); CAddrMan addrman2; CAddrDB adb; BOOST_CHECK(addrman2.size() == 0); BOOST_CHECK(adb.Read(addrman2, ssPeers2)); BOOST_CHECK(addrman2.size() == 3); } BOOST_AUTO_TEST_CASE(caddrdb_read_corrupted) { CAddrManCorrupted addrmanCorrupted; addrmanCorrupted.MakeDeterministic(); // Test that the de-serialization of corrupted addrman throws an exception. CDataStream ssPeers1 = AddrmanToStream(addrmanCorrupted); bool exceptionThrown = false; CAddrMan addrman1; BOOST_CHECK(addrman1.size() == 0); try { unsigned char pchMsgTmp[4]; ssPeers1 >> pchMsgTmp; ssPeers1 >> addrman1; } catch (const std::exception&) { exceptionThrown = true; } // Even through de-serialization failed addrman is not left in a clean state. BOOST_CHECK(addrman1.size() == 1); BOOST_CHECK(exceptionThrown); // Test that CAddrDB::Read leaves addrman in a clean state if de-serialization fails. CDataStream ssPeers2 = AddrmanToStream(addrmanCorrupted); CAddrMan addrman2; CAddrDB adb; BOOST_CHECK(addrman2.size() == 0); BOOST_CHECK(!adb.Read(addrman2, ssPeers2)); BOOST_CHECK(addrman2.size() == 0); } BOOST_AUTO_TEST_CASE(cnode_simple_test) { SOCKET hSocket = INVALID_SOCKET; NodeId id = 0; int height = 0; in_addr ipv4Addr; ipv4Addr.s_addr = 0xa0b0c001; CAddress addr = CAddress(CService(ipv4Addr, 7777), NODE_NETWORK); std::string pszDest; bool fInboundIn = false; // Test that fFeeler is false by default. std::unique_ptr pnode1 = MakeUnique(id++, NODE_NETWORK, height, hSocket, addr, 0, 0, CAddress(), pszDest, fInboundIn); BOOST_CHECK(pnode1->fInbound == false); BOOST_CHECK(pnode1->fFeeler == false); fInboundIn = true; std::unique_ptr pnode2 = MakeUnique(id++, NODE_NETWORK, height, hSocket, addr, 1, 1, CAddress(), pszDest, fInboundIn); BOOST_CHECK(pnode2->fInbound == true); BOOST_CHECK(pnode2->fFeeler == false); } // prior to PR #14728, this test triggers an undefined behavior BOOST_AUTO_TEST_CASE(ipv4_peer_with_ipv6_addrMe_test) { // set up local addresses; all that's necessary to reproduce the bug is // that a normal IPv4 address is among the entries, but if this address is // !IsRoutable the undefined behavior is easier to trigger deterministically { LOCK(cs_mapLocalHost); in_addr ipv4AddrLocal; ipv4AddrLocal.s_addr = 0x0100007f; CNetAddr addr = CNetAddr(ipv4AddrLocal); LocalServiceInfo lsi; lsi.nScore = 23; lsi.nPort = 42; mapLocalHost[addr] = lsi; } // create a peer with an IPv4 address in_addr ipv4AddrPeer; ipv4AddrPeer.s_addr = 0xa0b0c001; CAddress addr = CAddress(CService(ipv4AddrPeer, 7777), NODE_NETWORK); std::unique_ptr pnode = MakeUnique(0, NODE_NETWORK, 0, INVALID_SOCKET, addr, 0, 0, CAddress{}, std::string{}, false); pnode->fSuccessfullyConnected.store(true); // the peer claims to be reaching us via IPv6 in6_addr ipv6AddrLocal; memset(ipv6AddrLocal.s6_addr, 0, 16); ipv6AddrLocal.s6_addr[0] = 0xcc; CAddress addrLocal = CAddress(CService(ipv6AddrLocal, 7777), NODE_NETWORK); pnode->SetAddrLocal(addrLocal); // before patch, this causes undefined behavior detectable with clang's -fsanitize=memory AdvertiseLocal(&*pnode); // suppress no-checks-run warning; if this test fails, it's by triggering a sanitizer BOOST_CHECK(1); } BOOST_AUTO_TEST_CASE(LimitedAndReachable_Network) { BOOST_CHECK_EQUAL(IsReachable(NET_IPV4), true); BOOST_CHECK_EQUAL(IsReachable(NET_IPV6), true); BOOST_CHECK_EQUAL(IsReachable(NET_ONION), true); SetReachable(NET_IPV4, false); SetReachable(NET_IPV6, false); SetReachable(NET_ONION, false); BOOST_CHECK_EQUAL(IsReachable(NET_IPV4), false); BOOST_CHECK_EQUAL(IsReachable(NET_IPV6), false); BOOST_CHECK_EQUAL(IsReachable(NET_ONION), false); SetReachable(NET_IPV4, true); SetReachable(NET_IPV6, true); SetReachable(NET_ONION, true); BOOST_CHECK_EQUAL(IsReachable(NET_IPV4), true); BOOST_CHECK_EQUAL(IsReachable(NET_IPV6), true); BOOST_CHECK_EQUAL(IsReachable(NET_ONION), true); } BOOST_AUTO_TEST_CASE(LimitedAndReachable_NetworkCaseUnroutableAndInternal) { BOOST_CHECK_EQUAL(IsReachable(NET_UNROUTABLE), true); BOOST_CHECK_EQUAL(IsReachable(NET_INTERNAL), true); SetReachable(NET_UNROUTABLE, false); SetReachable(NET_INTERNAL, false); BOOST_CHECK_EQUAL(IsReachable(NET_UNROUTABLE), true); // Ignored for both networks BOOST_CHECK_EQUAL(IsReachable(NET_INTERNAL), true); } CNetAddr UtilBuildAddress(unsigned char p1, unsigned char p2, unsigned char p3, unsigned char p4) { unsigned char ip[] = {p1, p2, p3, p4}; struct sockaddr_in sa; memset(&sa, 0, sizeof(sockaddr_in)); // initialize the memory block memcpy(&(sa.sin_addr), &ip, sizeof(ip)); return CNetAddr(sa.sin_addr); } BOOST_AUTO_TEST_CASE(LimitedAndReachable_CNetAddr) { CNetAddr addr = UtilBuildAddress(0x001, 0x001, 0x001, 0x001); // 1.1.1.1 SetReachable(NET_IPV4, true); BOOST_CHECK_EQUAL(IsReachable(addr), true); SetReachable(NET_IPV4, false); BOOST_CHECK_EQUAL(IsReachable(addr), false); SetReachable(NET_IPV4, true); // have to reset this, because this is stateful. } BOOST_AUTO_TEST_CASE(LocalAddress_BasicLifecycle) { CService addr = CService(UtilBuildAddress(0x002, 0x001, 0x001, 0x001), 1000); // 2.1.1.1:1000 SetReachable(NET_IPV4, true); BOOST_CHECK_EQUAL(IsLocal(addr), false); BOOST_CHECK_EQUAL(AddLocal(addr, 1000), true); BOOST_CHECK_EQUAL(IsLocal(addr), true); RemoveLocal(addr); BOOST_CHECK_EQUAL(IsLocal(addr), false); } BOOST_AUTO_TEST_SUITE_END()