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bitcoin-bitcoin-core/src/test/net_tests.cpp
Pieter Wuille b815cce50e net: expose transport types/session IDs of connections in RPC and logs 
Co-authored-by: Dhruv Mehta <856960+dhruv@users.noreply.github.com>
2023-10-02 18:11:11 -04:00

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// Copyright (c) 2012-2022 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 <chainparams.h>
#include <clientversion.h>
#include <common/args.h>
#include <compat/compat.h>
#include <cstdint>
#include <net.h>
#include <net_processing.h>
#include <netaddress.h>
#include <netbase.h>
#include <netmessagemaker.h>
#include <serialize.h>
#include <span.h>
#include <streams.h>
#include <test/util/random.h>
#include <test/util/setup_common.h>
#include <test/util/validation.h>
#include <timedata.h>
#include <util/strencodings.h>
#include <util/string.h>
#include <validation.h>
#include <version.h>
#include <boost/test/unit_test.hpp>
#include <algorithm>
#include <ios>
#include <memory>
#include <optional>
#include <string>
using namespace std::literals;
BOOST_FIXTURE_TEST_SUITE(net_tests, RegTestingSetup)
BOOST_AUTO_TEST_CASE(cnode_listen_port)
{
// test default
uint16_t port{GetListenPort()};
BOOST_CHECK(port == Params().GetDefaultPort());
// test set port
uint16_t altPort = 12345;
BOOST_CHECK(gArgs.SoftSetArg("-port", ToString(altPort)));
port = GetListenPort();
BOOST_CHECK(port == altPort);
}
BOOST_AUTO_TEST_CASE(cnode_simple_test)
{
NodeId id = 0;
in_addr ipv4Addr;
ipv4Addr.s_addr = 0xa0b0c001;
CAddress addr = CAddress(CService(ipv4Addr, 7777), NODE_NETWORK);
std::string pszDest;
std::unique_ptr<CNode> pnode1 = std::make_unique<CNode>(id++,
/*sock=*/nullptr,
addr,
/*nKeyedNetGroupIn=*/0,
/*nLocalHostNonceIn=*/0,
CAddress(),
pszDest,
ConnectionType::OUTBOUND_FULL_RELAY,
/*inbound_onion=*/false);
BOOST_CHECK(pnode1->IsFullOutboundConn() == true);
BOOST_CHECK(pnode1->IsManualConn() == false);
BOOST_CHECK(pnode1->IsBlockOnlyConn() == false);
BOOST_CHECK(pnode1->IsFeelerConn() == false);
BOOST_CHECK(pnode1->IsAddrFetchConn() == false);
BOOST_CHECK(pnode1->IsInboundConn() == false);
BOOST_CHECK(pnode1->m_inbound_onion == false);
BOOST_CHECK_EQUAL(pnode1->ConnectedThroughNetwork(), Network::NET_IPV4);
std::unique_ptr<CNode> pnode2 = std::make_unique<CNode>(id++,
/*sock=*/nullptr,
addr,
/*nKeyedNetGroupIn=*/1,
/*nLocalHostNonceIn=*/1,
CAddress(),
pszDest,
ConnectionType::INBOUND,
/*inbound_onion=*/false);
BOOST_CHECK(pnode2->IsFullOutboundConn() == false);
BOOST_CHECK(pnode2->IsManualConn() == false);
BOOST_CHECK(pnode2->IsBlockOnlyConn() == false);
BOOST_CHECK(pnode2->IsFeelerConn() == false);
BOOST_CHECK(pnode2->IsAddrFetchConn() == false);
BOOST_CHECK(pnode2->IsInboundConn() == true);
BOOST_CHECK(pnode2->m_inbound_onion == false);
BOOST_CHECK_EQUAL(pnode2->ConnectedThroughNetwork(), Network::NET_IPV4);
std::unique_ptr<CNode> pnode3 = std::make_unique<CNode>(id++,
/*sock=*/nullptr,
addr,
/*nKeyedNetGroupIn=*/0,
/*nLocalHostNonceIn=*/0,
CAddress(),
pszDest,
ConnectionType::OUTBOUND_FULL_RELAY,
/*inbound_onion=*/false);
BOOST_CHECK(pnode3->IsFullOutboundConn() == true);
BOOST_CHECK(pnode3->IsManualConn() == false);
BOOST_CHECK(pnode3->IsBlockOnlyConn() == false);
BOOST_CHECK(pnode3->IsFeelerConn() == false);
BOOST_CHECK(pnode3->IsAddrFetchConn() == false);
BOOST_CHECK(pnode3->IsInboundConn() == false);
BOOST_CHECK(pnode3->m_inbound_onion == false);
BOOST_CHECK_EQUAL(pnode3->ConnectedThroughNetwork(), Network::NET_IPV4);
std::unique_ptr<CNode> pnode4 = std::make_unique<CNode>(id++,
/*sock=*/nullptr,
addr,
/*nKeyedNetGroupIn=*/1,
/*nLocalHostNonceIn=*/1,
CAddress(),
pszDest,
ConnectionType::INBOUND,
/*inbound_onion=*/true);
BOOST_CHECK(pnode4->IsFullOutboundConn() == false);
BOOST_CHECK(pnode4->IsManualConn() == false);
BOOST_CHECK(pnode4->IsBlockOnlyConn() == false);
BOOST_CHECK(pnode4->IsFeelerConn() == false);
BOOST_CHECK(pnode4->IsAddrFetchConn() == false);
BOOST_CHECK(pnode4->IsInboundConn() == true);
BOOST_CHECK(pnode4->m_inbound_onion == true);
BOOST_CHECK_EQUAL(pnode4->ConnectedThroughNetwork(), Network::NET_ONION);
}
BOOST_AUTO_TEST_CASE(cnetaddr_basic)
{
CNetAddr addr;
// IPv4, INADDR_ANY
addr = LookupHost("0.0.0.0", false).value();
BOOST_REQUIRE(!addr.IsValid());
BOOST_REQUIRE(addr.IsIPv4());
BOOST_CHECK(addr.IsBindAny());
BOOST_CHECK(addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), "0.0.0.0");
// IPv4, INADDR_NONE
addr = LookupHost("255.255.255.255", false).value();
BOOST_REQUIRE(!addr.IsValid());
BOOST_REQUIRE(addr.IsIPv4());
BOOST_CHECK(!addr.IsBindAny());
BOOST_CHECK(addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), "255.255.255.255");
// IPv4, casual
addr = LookupHost("12.34.56.78", false).value();
BOOST_REQUIRE(addr.IsValid());
BOOST_REQUIRE(addr.IsIPv4());
BOOST_CHECK(!addr.IsBindAny());
BOOST_CHECK(addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), "12.34.56.78");
// IPv6, in6addr_any
addr = LookupHost("::", false).value();
BOOST_REQUIRE(!addr.IsValid());
BOOST_REQUIRE(addr.IsIPv6());
BOOST_CHECK(addr.IsBindAny());
BOOST_CHECK(addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), "::");
// IPv6, casual
addr = LookupHost("1122:3344:5566:7788:9900:aabb:ccdd:eeff", false).value();
BOOST_REQUIRE(addr.IsValid());
BOOST_REQUIRE(addr.IsIPv6());
BOOST_CHECK(!addr.IsBindAny());
BOOST_CHECK(addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), "1122:3344:5566:7788:9900:aabb:ccdd:eeff");
// IPv6, scoped/link-local. See https://tools.ietf.org/html/rfc4007
// We support non-negative decimal integers (uint32_t) as zone id indices.
// Normal link-local scoped address functionality is to append "%" plus the
// zone id, for example, given a link-local address of "fe80::1" and a zone
// id of "32", return the address as "fe80::1%32".
const std::string link_local{"fe80::1"};
const std::string scoped_addr{link_local + "%32"};
addr = LookupHost(scoped_addr, false).value();
BOOST_REQUIRE(addr.IsValid());
BOOST_REQUIRE(addr.IsIPv6());
BOOST_CHECK(!addr.IsBindAny());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), scoped_addr);
// Test that the delimiter "%" and default zone id of 0 can be omitted for the default scope.
addr = LookupHost(link_local + "%0", false).value();
BOOST_REQUIRE(addr.IsValid());
BOOST_REQUIRE(addr.IsIPv6());
BOOST_CHECK(!addr.IsBindAny());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), link_local);
// TORv2, no longer supported
BOOST_CHECK(!addr.SetSpecial("6hzph5hv6337r6p2.onion"));
// TORv3
const char* torv3_addr = "pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion";
BOOST_REQUIRE(addr.SetSpecial(torv3_addr));
BOOST_REQUIRE(addr.IsValid());
BOOST_REQUIRE(addr.IsTor());
BOOST_CHECK(!addr.IsI2P());
BOOST_CHECK(!addr.IsBindAny());
BOOST_CHECK(!addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), torv3_addr);
// TORv3, broken, with wrong checksum
BOOST_CHECK(!addr.SetSpecial("pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscsad.onion"));
// TORv3, broken, with wrong version
BOOST_CHECK(!addr.SetSpecial("pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscrye.onion"));
// TORv3, malicious
BOOST_CHECK(!addr.SetSpecial(std::string{
"pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd\0wtf.onion", 66}));
// TOR, bogus length
BOOST_CHECK(!addr.SetSpecial(std::string{"mfrggzak.onion"}));
// TOR, invalid base32
BOOST_CHECK(!addr.SetSpecial(std::string{"mf*g zak.onion"}));
// I2P
const char* i2p_addr = "UDHDrtrcetjm5sxzskjyr5ztpeszydbh4dpl3pl4utgqqw2v4jna.b32.I2P";
BOOST_REQUIRE(addr.SetSpecial(i2p_addr));
BOOST_REQUIRE(addr.IsValid());
BOOST_REQUIRE(addr.IsI2P());
BOOST_CHECK(!addr.IsTor());
BOOST_CHECK(!addr.IsBindAny());
BOOST_CHECK(!addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), ToLower(i2p_addr));
// I2P, correct length, but decodes to less than the expected number of bytes.
BOOST_CHECK(!addr.SetSpecial("udhdrtrcetjm5sxzskjyr5ztpeszydbh4dpl3pl4utgqqw2v4jn=.b32.i2p"));
// I2P, extra unnecessary padding
BOOST_CHECK(!addr.SetSpecial("udhdrtrcetjm5sxzskjyr5ztpeszydbh4dpl3pl4utgqqw2v4jna=.b32.i2p"));
// I2P, malicious
BOOST_CHECK(!addr.SetSpecial("udhdrtrcetjm5sxzskjyr5ztpeszydbh4dpl3pl4utgqqw2v\0wtf.b32.i2p"s));
// I2P, valid but unsupported (56 Base32 characters)
// See "Encrypted LS with Base 32 Addresses" in
// https://geti2p.net/spec/encryptedleaseset.txt
BOOST_CHECK(
!addr.SetSpecial("pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscsad.b32.i2p"));
// I2P, invalid base32
BOOST_CHECK(!addr.SetSpecial(std::string{"tp*szydbh4dp.b32.i2p"}));
// Internal
addr.SetInternal("esffpp");
BOOST_REQUIRE(!addr.IsValid()); // "internal" is considered invalid
BOOST_REQUIRE(addr.IsInternal());
BOOST_CHECK(!addr.IsBindAny());
BOOST_CHECK(addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), "esffpvrt3wpeaygy.internal");
// Totally bogus
BOOST_CHECK(!addr.SetSpecial("totally bogus"));
}
BOOST_AUTO_TEST_CASE(cnetaddr_tostring_canonical_ipv6)
{
// Test that CNetAddr::ToString formats IPv6 addresses with zero compression as described in
// RFC 5952 ("A Recommendation for IPv6 Address Text Representation").
const std::map<std::string, std::string> canonical_representations_ipv6{
{"0000:0000:0000:0000:0000:0000:0000:0000", "::"},
{"000:0000:000:00:0:00:000:0000", "::"},
{"000:000:000:000:000:000:000:000", "::"},
{"00:00:00:00:00:00:00:00", "::"},
{"0:0:0:0:0:0:0:0", "::"},
{"0:0:0:0:0:0:0:1", "::1"},
{"2001:0:0:1:0:0:0:1", "2001:0:0:1::1"},
{"2001:0db8:0:0:1:0:0:1", "2001:db8::1:0:0:1"},
{"2001:0db8:85a3:0000:0000:8a2e:0370:7334", "2001:db8:85a3::8a2e:370:7334"},
{"2001:0db8::0001", "2001:db8::1"},
{"2001:0db8::0001:0000", "2001:db8::1:0"},
{"2001:0db8::1:0:0:1", "2001:db8::1:0:0:1"},
{"2001:db8:0000:0:1::1", "2001:db8::1:0:0:1"},
{"2001:db8:0000:1:1:1:1:1", "2001:db8:0:1:1:1:1:1"},
{"2001:db8:0:0:0:0:2:1", "2001:db8::2:1"},
{"2001:db8:0:0:0::1", "2001:db8::1"},
{"2001:db8:0:0:1:0:0:1", "2001:db8::1:0:0:1"},
{"2001:db8:0:0:1::1", "2001:db8::1:0:0:1"},
{"2001:DB8:0:0:1::1", "2001:db8::1:0:0:1"},
{"2001:db8:0:0::1", "2001:db8::1"},
{"2001:db8:0:0:aaaa::1", "2001:db8::aaaa:0:0:1"},
{"2001:db8:0:1:1:1:1:1", "2001:db8:0:1:1:1:1:1"},
{"2001:db8:0::1", "2001:db8::1"},
{"2001:db8:85a3:0:0:8a2e:370:7334", "2001:db8:85a3::8a2e:370:7334"},
{"2001:db8::0:1", "2001:db8::1"},
{"2001:db8::0:1:0:0:1", "2001:db8::1:0:0:1"},
{"2001:DB8::1", "2001:db8::1"},
{"2001:db8::1", "2001:db8::1"},
{"2001:db8::1:0:0:1", "2001:db8::1:0:0:1"},
{"2001:db8::1:1:1:1:1", "2001:db8:0:1:1:1:1:1"},
{"2001:db8::aaaa:0:0:1", "2001:db8::aaaa:0:0:1"},
{"2001:db8:aaaa:bbbb:cccc:dddd:0:1", "2001:db8:aaaa:bbbb:cccc:dddd:0:1"},
{"2001:db8:aaaa:bbbb:cccc:dddd::1", "2001:db8:aaaa:bbbb:cccc:dddd:0:1"},
{"2001:db8:aaaa:bbbb:cccc:dddd:eeee:0001", "2001:db8:aaaa:bbbb:cccc:dddd:eeee:1"},
{"2001:db8:aaaa:bbbb:cccc:dddd:eeee:001", "2001:db8:aaaa:bbbb:cccc:dddd:eeee:1"},
{"2001:db8:aaaa:bbbb:cccc:dddd:eeee:01", "2001:db8:aaaa:bbbb:cccc:dddd:eeee:1"},
{"2001:db8:aaaa:bbbb:cccc:dddd:eeee:1", "2001:db8:aaaa:bbbb:cccc:dddd:eeee:1"},
{"2001:db8:aaaa:bbbb:cccc:dddd:eeee:aaaa", "2001:db8:aaaa:bbbb:cccc:dddd:eeee:aaaa"},
{"2001:db8:aaaa:bbbb:cccc:dddd:eeee:AAAA", "2001:db8:aaaa:bbbb:cccc:dddd:eeee:aaaa"},
{"2001:db8:aaaa:bbbb:cccc:dddd:eeee:AaAa", "2001:db8:aaaa:bbbb:cccc:dddd:eeee:aaaa"},
};
for (const auto& [input_address, expected_canonical_representation_output] : canonical_representations_ipv6) {
const std::optional<CNetAddr> net_addr{LookupHost(input_address, false)};
BOOST_REQUIRE(net_addr.value().IsIPv6());
BOOST_CHECK_EQUAL(net_addr.value().ToStringAddr(), expected_canonical_representation_output);
}
}
BOOST_AUTO_TEST_CASE(cnetaddr_serialize_v1)
{
CNetAddr addr;
DataStream s{};
const auto ser_params{CAddress::V1_NETWORK};
s << WithParams(ser_params, addr);
BOOST_CHECK_EQUAL(HexStr(s), "00000000000000000000000000000000");
s.clear();
addr = LookupHost("1.2.3.4", false).value();
s << WithParams(ser_params, addr);
BOOST_CHECK_EQUAL(HexStr(s), "00000000000000000000ffff01020304");
s.clear();
addr = LookupHost("1a1b:2a2b:3a3b:4a4b:5a5b:6a6b:7a7b:8a8b", false).value();
s << WithParams(ser_params, addr);
BOOST_CHECK_EQUAL(HexStr(s), "1a1b2a2b3a3b4a4b5a5b6a6b7a7b8a8b");
s.clear();
// TORv2, no longer supported
BOOST_CHECK(!addr.SetSpecial("6hzph5hv6337r6p2.onion"));
BOOST_REQUIRE(addr.SetSpecial("pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion"));
s << WithParams(ser_params, addr);
BOOST_CHECK_EQUAL(HexStr(s), "00000000000000000000000000000000");
s.clear();
addr.SetInternal("a");
s << WithParams(ser_params, addr);
BOOST_CHECK_EQUAL(HexStr(s), "fd6b88c08724ca978112ca1bbdcafac2");
s.clear();
}
BOOST_AUTO_TEST_CASE(cnetaddr_serialize_v2)
{
CNetAddr addr;
DataStream s{};
const auto ser_params{CAddress::V2_NETWORK};
s << WithParams(ser_params, addr);
BOOST_CHECK_EQUAL(HexStr(s), "021000000000000000000000000000000000");
s.clear();
addr = LookupHost("1.2.3.4", false).value();
s << WithParams(ser_params, addr);
BOOST_CHECK_EQUAL(HexStr(s), "010401020304");
s.clear();
addr = LookupHost("1a1b:2a2b:3a3b:4a4b:5a5b:6a6b:7a7b:8a8b", false).value();
s << WithParams(ser_params, addr);
BOOST_CHECK_EQUAL(HexStr(s), "02101a1b2a2b3a3b4a4b5a5b6a6b7a7b8a8b");
s.clear();
// TORv2, no longer supported
BOOST_CHECK(!addr.SetSpecial("6hzph5hv6337r6p2.onion"));
BOOST_REQUIRE(addr.SetSpecial("kpgvmscirrdqpekbqjsvw5teanhatztpp2gl6eee4zkowvwfxwenqaid.onion"));
s << WithParams(ser_params, addr);
BOOST_CHECK_EQUAL(HexStr(s), "042053cd5648488c4707914182655b7664034e09e66f7e8cbf1084e654eb56c5bd88");
s.clear();
BOOST_REQUIRE(addr.SetInternal("a"));
s << WithParams(ser_params, addr);
BOOST_CHECK_EQUAL(HexStr(s), "0210fd6b88c08724ca978112ca1bbdcafac2");
s.clear();
}
BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
{
CNetAddr addr;
DataStream s{};
const auto ser_params{CAddress::V2_NETWORK};
// Valid IPv4.
s << Span{ParseHex("01" // network type (IPv4)
"04" // address length
"01020304")}; // address
s >> WithParams(ser_params, addr);
BOOST_CHECK(addr.IsValid());
BOOST_CHECK(addr.IsIPv4());
BOOST_CHECK(addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), "1.2.3.4");
BOOST_REQUIRE(s.empty());
// Invalid IPv4, valid length but address itself is shorter.
s << Span{ParseHex("01" // network type (IPv4)
"04" // address length
"0102")}; // address
BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure, HasReason("end of data"));
BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
s.clear();
// Invalid IPv4, with bogus length.
s << Span{ParseHex("01" // network type (IPv4)
"05" // address length
"01020304")}; // address
BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
HasReason("BIP155 IPv4 address with length 5 (should be 4)"));
BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
s.clear();
// Invalid IPv4, with extreme length.
s << Span{ParseHex("01" // network type (IPv4)
"fd0102" // address length (513 as CompactSize)
"01020304")}; // address
BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
HasReason("Address too long: 513 > 512"));
BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
s.clear();
// Valid IPv6.
s << Span{ParseHex("02" // network type (IPv6)
"10" // address length
"0102030405060708090a0b0c0d0e0f10")}; // address
s >> WithParams(ser_params, addr);
BOOST_CHECK(addr.IsValid());
BOOST_CHECK(addr.IsIPv6());
BOOST_CHECK(addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), "102:304:506:708:90a:b0c:d0e:f10");
BOOST_REQUIRE(s.empty());
// Valid IPv6, contains embedded "internal".
s << Span{ParseHex(
"02" // network type (IPv6)
"10" // address length
"fd6b88c08724ca978112ca1bbdcafac2")}; // address: 0xfd + sha256("bitcoin")[0:5] +
// sha256(name)[0:10]
s >> WithParams(ser_params, addr);
BOOST_CHECK(addr.IsInternal());
BOOST_CHECK(addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), "zklycewkdo64v6wc.internal");
BOOST_REQUIRE(s.empty());
// Invalid IPv6, with bogus length.
s << Span{ParseHex("02" // network type (IPv6)
"04" // address length
"00")}; // address
BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
HasReason("BIP155 IPv6 address with length 4 (should be 16)"));
BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
s.clear();
// Invalid IPv6, contains embedded IPv4.
s << Span{ParseHex("02" // network type (IPv6)
"10" // address length
"00000000000000000000ffff01020304")}; // address
s >> WithParams(ser_params, addr);
BOOST_CHECK(!addr.IsValid());
BOOST_REQUIRE(s.empty());
// Invalid IPv6, contains embedded TORv2.
s << Span{ParseHex("02" // network type (IPv6)
"10" // address length
"fd87d87eeb430102030405060708090a")}; // address
s >> WithParams(ser_params, addr);
BOOST_CHECK(!addr.IsValid());
BOOST_REQUIRE(s.empty());
// TORv2, no longer supported.
s << Span{ParseHex("03" // network type (TORv2)
"0a" // address length
"f1f2f3f4f5f6f7f8f9fa")}; // address
s >> WithParams(ser_params, addr);
BOOST_CHECK(!addr.IsValid());
BOOST_REQUIRE(s.empty());
// Valid TORv3.
s << Span{ParseHex("04" // network type (TORv3)
"20" // address length
"79bcc625184b05194975c28b66b66b04" // address
"69f7f6556fb1ac3189a79b40dda32f1f"
)};
s >> WithParams(ser_params, addr);
BOOST_CHECK(addr.IsValid());
BOOST_CHECK(addr.IsTor());
BOOST_CHECK(!addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(),
"pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion");
BOOST_REQUIRE(s.empty());
// Invalid TORv3, with bogus length.
s << Span{ParseHex("04" // network type (TORv3)
"00" // address length
"00" // address
)};
BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
HasReason("BIP155 TORv3 address with length 0 (should be 32)"));
BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
s.clear();
// Valid I2P.
s << Span{ParseHex("05" // network type (I2P)
"20" // address length
"a2894dabaec08c0051a481a6dac88b64" // address
"f98232ae42d4b6fd2fa81952dfe36a87")};
s >> WithParams(ser_params, addr);
BOOST_CHECK(addr.IsValid());
BOOST_CHECK(addr.IsI2P());
BOOST_CHECK(!addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(),
"ukeu3k5oycgaauneqgtnvselmt4yemvoilkln7jpvamvfx7dnkdq.b32.i2p");
BOOST_REQUIRE(s.empty());
// Invalid I2P, with bogus length.
s << Span{ParseHex("05" // network type (I2P)
"03" // address length
"00" // address
)};
BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
HasReason("BIP155 I2P address with length 3 (should be 32)"));
BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
s.clear();
// Valid CJDNS.
s << Span{ParseHex("06" // network type (CJDNS)
"10" // address length
"fc000001000200030004000500060007" // address
)};
s >> WithParams(ser_params, addr);
BOOST_CHECK(addr.IsValid());
BOOST_CHECK(addr.IsCJDNS());
BOOST_CHECK(!addr.IsAddrV1Compatible());
BOOST_CHECK_EQUAL(addr.ToStringAddr(), "fc00:1:2:3:4:5:6:7");
BOOST_REQUIRE(s.empty());
// Invalid CJDNS, wrong prefix.
s << Span{ParseHex("06" // network type (CJDNS)
"10" // address length
"aa000001000200030004000500060007" // address
)};
s >> WithParams(ser_params, addr);
BOOST_CHECK(addr.IsCJDNS());
BOOST_CHECK(!addr.IsValid());
BOOST_REQUIRE(s.empty());
// Invalid CJDNS, with bogus length.
s << Span{ParseHex("06" // network type (CJDNS)
"01" // address length
"00" // address
)};
BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
HasReason("BIP155 CJDNS address with length 1 (should be 16)"));
BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
s.clear();
// Unknown, with extreme length.
s << Span{ParseHex("aa" // network type (unknown)
"fe00000002" // address length (CompactSize's MAX_SIZE)
"01020304050607" // address
)};
BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
HasReason("Address too long: 33554432 > 512"));
BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
s.clear();
// Unknown, with reasonable length.
s << Span{ParseHex("aa" // network type (unknown)
"04" // address length
"01020304" // address
)};
s >> WithParams(ser_params, addr);
BOOST_CHECK(!addr.IsValid());
BOOST_REQUIRE(s.empty());
// Unknown, with zero length.
s << Span{ParseHex("aa" // network type (unknown)
"00" // address length
"" // address
)};
s >> WithParams(ser_params, addr);
BOOST_CHECK(!addr.IsValid());
BOOST_REQUIRE(s.empty());
}
// 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
in_addr raw_addr;
raw_addr.s_addr = htonl(0x7f000001);
const CNetAddr mapLocalHost_entry = CNetAddr(raw_addr);
{
LOCK(g_maplocalhost_mutex);
LocalServiceInfo lsi;
lsi.nScore = 23;
lsi.nPort = 42;
mapLocalHost[mapLocalHost_entry] = 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<CNode> pnode = std::make_unique<CNode>(/*id=*/0,
/*sock=*/nullptr,
addr,
/*nKeyedNetGroupIn=*/0,
/*nLocalHostNonceIn=*/0,
CAddress{},
/*pszDest=*/std::string{},
ConnectionType::OUTBOUND_FULL_RELAY,
/*inbound_onion=*/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
GetLocalAddrForPeer(*pnode);
// suppress no-checks-run warning; if this test fails, it's by triggering a sanitizer
BOOST_CHECK(1);
// Cleanup, so that we don't confuse other tests.
{
LOCK(g_maplocalhost_mutex);
mapLocalHost.erase(mapLocalHost_entry);
}
}
BOOST_AUTO_TEST_CASE(get_local_addr_for_peer_port)
{
// Test that GetLocalAddrForPeer() properly selects the address to self-advertise:
//
// 1. GetLocalAddrForPeer() calls GetLocalAddress() which returns an address that is
// not routable.
// 2. GetLocalAddrForPeer() overrides the address with whatever the peer has told us
// he sees us as.
// 2.1. For inbound connections we must override both the address and the port.
// 2.2. For outbound connections we must override only the address.
// Pretend that we bound to this port.
const uint16_t bind_port = 20001;
m_node.args->ForceSetArg("-bind", strprintf("3.4.5.6:%u", bind_port));
// Our address:port as seen from the peer, completely different from the above.
in_addr peer_us_addr;
peer_us_addr.s_addr = htonl(0x02030405);
const CService peer_us{peer_us_addr, 20002};
// Create a peer with a routable IPv4 address (outbound).
in_addr peer_out_in_addr;
peer_out_in_addr.s_addr = htonl(0x01020304);
CNode peer_out{/*id=*/0,
/*sock=*/nullptr,
/*addrIn=*/CAddress{CService{peer_out_in_addr, 8333}, NODE_NETWORK},
/*nKeyedNetGroupIn=*/0,
/*nLocalHostNonceIn=*/0,
/*addrBindIn=*/CAddress{},
/*addrNameIn=*/std::string{},
/*conn_type_in=*/ConnectionType::OUTBOUND_FULL_RELAY,
/*inbound_onion=*/false};
peer_out.fSuccessfullyConnected = true;
peer_out.SetAddrLocal(peer_us);
// Without the fix peer_us:8333 is chosen instead of the proper peer_us:bind_port.
auto chosen_local_addr = GetLocalAddrForPeer(peer_out);
BOOST_REQUIRE(chosen_local_addr);
const CService expected{peer_us_addr, bind_port};
BOOST_CHECK(*chosen_local_addr == expected);
// Create a peer with a routable IPv4 address (inbound).
in_addr peer_in_in_addr;
peer_in_in_addr.s_addr = htonl(0x05060708);
CNode peer_in{/*id=*/0,
/*sock=*/nullptr,
/*addrIn=*/CAddress{CService{peer_in_in_addr, 8333}, NODE_NETWORK},
/*nKeyedNetGroupIn=*/0,
/*nLocalHostNonceIn=*/0,
/*addrBindIn=*/CAddress{},
/*addrNameIn=*/std::string{},
/*conn_type_in=*/ConnectionType::INBOUND,
/*inbound_onion=*/false};
peer_in.fSuccessfullyConnected = true;
peer_in.SetAddrLocal(peer_us);
// Without the fix peer_us:8333 is chosen instead of the proper peer_us:peer_us.GetPort().
chosen_local_addr = GetLocalAddrForPeer(peer_in);
BOOST_REQUIRE(chosen_local_addr);
BOOST_CHECK(*chosen_local_addr == peer_us);
m_node.args->ForceSetArg("-bind", "");
}
BOOST_AUTO_TEST_CASE(LimitedAndReachable_Network)
{
BOOST_CHECK(IsReachable(NET_IPV4));
BOOST_CHECK(IsReachable(NET_IPV6));
BOOST_CHECK(IsReachable(NET_ONION));
BOOST_CHECK(IsReachable(NET_I2P));
BOOST_CHECK(IsReachable(NET_CJDNS));
SetReachable(NET_IPV4, false);
SetReachable(NET_IPV6, false);
SetReachable(NET_ONION, false);
SetReachable(NET_I2P, false);
SetReachable(NET_CJDNS, false);
BOOST_CHECK(!IsReachable(NET_IPV4));
BOOST_CHECK(!IsReachable(NET_IPV6));
BOOST_CHECK(!IsReachable(NET_ONION));
BOOST_CHECK(!IsReachable(NET_I2P));
BOOST_CHECK(!IsReachable(NET_CJDNS));
SetReachable(NET_IPV4, true);
SetReachable(NET_IPV6, true);
SetReachable(NET_ONION, true);
SetReachable(NET_I2P, true);
SetReachable(NET_CJDNS, true);
BOOST_CHECK(IsReachable(NET_IPV4));
BOOST_CHECK(IsReachable(NET_IPV6));
BOOST_CHECK(IsReachable(NET_ONION));
BOOST_CHECK(IsReachable(NET_I2P));
BOOST_CHECK(IsReachable(NET_CJDNS));
}
BOOST_AUTO_TEST_CASE(LimitedAndReachable_NetworkCaseUnroutableAndInternal)
{
BOOST_CHECK(IsReachable(NET_UNROUTABLE));
BOOST_CHECK(IsReachable(NET_INTERNAL));
SetReachable(NET_UNROUTABLE, false);
SetReachable(NET_INTERNAL, false);
BOOST_CHECK(IsReachable(NET_UNROUTABLE)); // Ignored for both networks
BOOST_CHECK(IsReachable(NET_INTERNAL));
}
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(IsReachable(addr));
SetReachable(NET_IPV4, false);
BOOST_CHECK(!IsReachable(addr));
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(!IsLocal(addr));
BOOST_CHECK(AddLocal(addr, 1000));
BOOST_CHECK(IsLocal(addr));
RemoveLocal(addr);
BOOST_CHECK(!IsLocal(addr));
}
BOOST_AUTO_TEST_CASE(initial_advertise_from_version_message)
{
LOCK(NetEventsInterface::g_msgproc_mutex);
// Tests the following scenario:
// * -bind=3.4.5.6:20001 is specified
// * we make an outbound connection to a peer
// * the peer reports he sees us as 2.3.4.5:20002 in the version message
// (20002 is a random port assigned by our OS for the outgoing TCP connection,
// we cannot accept connections to it)
// * we should self-advertise to that peer as 2.3.4.5:20001
// Pretend that we bound to this port.
const uint16_t bind_port = 20001;
m_node.args->ForceSetArg("-bind", strprintf("3.4.5.6:%u", bind_port));
m_node.args->ForceSetArg("-capturemessages", "1");
// Our address:port as seen from the peer - 2.3.4.5:20002 (different from the above).
in_addr peer_us_addr;
peer_us_addr.s_addr = htonl(0x02030405);
const CService peer_us{peer_us_addr, 20002};
// Create a peer with a routable IPv4 address.
in_addr peer_in_addr;
peer_in_addr.s_addr = htonl(0x01020304);
CNode peer{/*id=*/0,
/*sock=*/nullptr,
/*addrIn=*/CAddress{CService{peer_in_addr, 8333}, NODE_NETWORK},
/*nKeyedNetGroupIn=*/0,
/*nLocalHostNonceIn=*/0,
/*addrBindIn=*/CAddress{},
/*addrNameIn=*/std::string{},
/*conn_type_in=*/ConnectionType::OUTBOUND_FULL_RELAY,
/*inbound_onion=*/false};
const uint64_t services{NODE_NETWORK | NODE_WITNESS};
const int64_t time{0};
const CNetMsgMaker msg_maker{PROTOCOL_VERSION};
// Force ChainstateManager::IsInitialBlockDownload() to return false.
// Otherwise PushAddress() isn't called by PeerManager::ProcessMessage().
auto& chainman = static_cast<TestChainstateManager&>(*m_node.chainman);
chainman.JumpOutOfIbd();
m_node.peerman->InitializeNode(peer, NODE_NETWORK);
std::atomic<bool> interrupt_dummy{false};
std::chrono::microseconds time_received_dummy{0};
const auto msg_version =
msg_maker.Make(NetMsgType::VERSION, PROTOCOL_VERSION, services, time, services, CAddress::V1_NETWORK(peer_us));
CDataStream msg_version_stream{msg_version.data, SER_NETWORK, PROTOCOL_VERSION};
m_node.peerman->ProcessMessage(
peer, NetMsgType::VERSION, msg_version_stream, time_received_dummy, interrupt_dummy);
const auto msg_verack = msg_maker.Make(NetMsgType::VERACK);
CDataStream msg_verack_stream{msg_verack.data, SER_NETWORK, PROTOCOL_VERSION};
// Will set peer.fSuccessfullyConnected to true (necessary in SendMessages()).
m_node.peerman->ProcessMessage(
peer, NetMsgType::VERACK, msg_verack_stream, time_received_dummy, interrupt_dummy);
// Ensure that peer_us_addr:bind_port is sent to the peer.
const CService expected{peer_us_addr, bind_port};
bool sent{false};
const auto CaptureMessageOrig = CaptureMessage;
CaptureMessage = [&sent, &expected](const CAddress& addr,
const std::string& msg_type,
Span<const unsigned char> data,
bool is_incoming) -> void {
if (!is_incoming && msg_type == "addr") {
DataStream s{data};
std::vector<CAddress> addresses;
s >> CAddress::V1_NETWORK(addresses);
for (const auto& addr : addresses) {
if (addr == expected) {
sent = true;
return;
}
}
}
};
m_node.peerman->SendMessages(&peer);
BOOST_CHECK(sent);
CaptureMessage = CaptureMessageOrig;
chainman.ResetIbd();
m_node.args->ForceSetArg("-capturemessages", "0");
m_node.args->ForceSetArg("-bind", "");
// PeerManager::ProcessMessage() calls AddTimeData() which changes the internal state
// in timedata.cpp and later confuses the test "timedata_tests/addtimedata". Thus reset
// that state as it was before our test was run.
TestOnlyResetTimeData();
}
BOOST_AUTO_TEST_CASE(advertise_local_address)
{
auto CreatePeer = [](const CAddress& addr) {
return std::make_unique<CNode>(/*id=*/0,
/*sock=*/nullptr,
addr,
/*nKeyedNetGroupIn=*/0,
/*nLocalHostNonceIn=*/0,
CAddress{},
/*pszDest=*/std::string{},
ConnectionType::OUTBOUND_FULL_RELAY,
/*inbound_onion=*/false);
};
SetReachable(NET_CJDNS, true);
CAddress addr_ipv4{Lookup("1.2.3.4", 8333, false).value(), NODE_NONE};
BOOST_REQUIRE(addr_ipv4.IsValid());
BOOST_REQUIRE(addr_ipv4.IsIPv4());
CAddress addr_ipv6{Lookup("1122:3344:5566:7788:9900:aabb:ccdd:eeff", 8333, false).value(), NODE_NONE};
BOOST_REQUIRE(addr_ipv6.IsValid());
BOOST_REQUIRE(addr_ipv6.IsIPv6());
CAddress addr_ipv6_tunnel{Lookup("2002:3344:5566:7788:9900:aabb:ccdd:eeff", 8333, false).value(), NODE_NONE};
BOOST_REQUIRE(addr_ipv6_tunnel.IsValid());
BOOST_REQUIRE(addr_ipv6_tunnel.IsIPv6());
BOOST_REQUIRE(addr_ipv6_tunnel.IsRFC3964());
CAddress addr_teredo{Lookup("2001:0000:5566:7788:9900:aabb:ccdd:eeff", 8333, false).value(), NODE_NONE};
BOOST_REQUIRE(addr_teredo.IsValid());
BOOST_REQUIRE(addr_teredo.IsIPv6());
BOOST_REQUIRE(addr_teredo.IsRFC4380());
CAddress addr_onion;
BOOST_REQUIRE(addr_onion.SetSpecial("pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion"));
BOOST_REQUIRE(addr_onion.IsValid());
BOOST_REQUIRE(addr_onion.IsTor());
CAddress addr_i2p;
BOOST_REQUIRE(addr_i2p.SetSpecial("udhdrtrcetjm5sxzskjyr5ztpeszydbh4dpl3pl4utgqqw2v4jna.b32.i2p"));
BOOST_REQUIRE(addr_i2p.IsValid());
BOOST_REQUIRE(addr_i2p.IsI2P());
CService service_cjdns{Lookup("fc00:3344:5566:7788:9900:aabb:ccdd:eeff", 8333, false).value(), NODE_NONE};
CAddress addr_cjdns{MaybeFlipIPv6toCJDNS(service_cjdns), NODE_NONE};
BOOST_REQUIRE(addr_cjdns.IsValid());
BOOST_REQUIRE(addr_cjdns.IsCJDNS());
const auto peer_ipv4{CreatePeer(addr_ipv4)};
const auto peer_ipv6{CreatePeer(addr_ipv6)};
const auto peer_ipv6_tunnel{CreatePeer(addr_ipv6_tunnel)};
const auto peer_teredo{CreatePeer(addr_teredo)};
const auto peer_onion{CreatePeer(addr_onion)};
const auto peer_i2p{CreatePeer(addr_i2p)};
const auto peer_cjdns{CreatePeer(addr_cjdns)};
// one local clearnet address - advertise to all but privacy peers
AddLocal(addr_ipv4);
BOOST_CHECK(GetLocalAddress(*peer_ipv4) == addr_ipv4);
BOOST_CHECK(GetLocalAddress(*peer_ipv6) == addr_ipv4);
BOOST_CHECK(GetLocalAddress(*peer_ipv6_tunnel) == addr_ipv4);
BOOST_CHECK(GetLocalAddress(*peer_teredo) == addr_ipv4);
BOOST_CHECK(GetLocalAddress(*peer_cjdns) == addr_ipv4);
BOOST_CHECK(!GetLocalAddress(*peer_onion).IsValid());
BOOST_CHECK(!GetLocalAddress(*peer_i2p).IsValid());
RemoveLocal(addr_ipv4);
// local privacy addresses - don't advertise to clearnet peers
AddLocal(addr_onion);
AddLocal(addr_i2p);
BOOST_CHECK(!GetLocalAddress(*peer_ipv4).IsValid());
BOOST_CHECK(!GetLocalAddress(*peer_ipv6).IsValid());
BOOST_CHECK(!GetLocalAddress(*peer_ipv6_tunnel).IsValid());
BOOST_CHECK(!GetLocalAddress(*peer_teredo).IsValid());
BOOST_CHECK(!GetLocalAddress(*peer_cjdns).IsValid());
BOOST_CHECK(GetLocalAddress(*peer_onion) == addr_onion);
BOOST_CHECK(GetLocalAddress(*peer_i2p) == addr_i2p);
RemoveLocal(addr_onion);
RemoveLocal(addr_i2p);
// local addresses from all networks
AddLocal(addr_ipv4);
AddLocal(addr_ipv6);
AddLocal(addr_ipv6_tunnel);
AddLocal(addr_teredo);
AddLocal(addr_onion);
AddLocal(addr_i2p);
AddLocal(addr_cjdns);
BOOST_CHECK(GetLocalAddress(*peer_ipv4) == addr_ipv4);
BOOST_CHECK(GetLocalAddress(*peer_ipv6) == addr_ipv6);
BOOST_CHECK(GetLocalAddress(*peer_ipv6_tunnel) == addr_ipv6);
BOOST_CHECK(GetLocalAddress(*peer_teredo) == addr_ipv4);
BOOST_CHECK(GetLocalAddress(*peer_onion) == addr_onion);
BOOST_CHECK(GetLocalAddress(*peer_i2p) == addr_i2p);
BOOST_CHECK(GetLocalAddress(*peer_cjdns) == addr_cjdns);
RemoveLocal(addr_ipv4);
RemoveLocal(addr_ipv6);
RemoveLocal(addr_ipv6_tunnel);
RemoveLocal(addr_teredo);
RemoveLocal(addr_onion);
RemoveLocal(addr_i2p);
RemoveLocal(addr_cjdns);
}
namespace {
CKey GenerateRandomTestKey() noexcept
{
CKey key;
uint256 key_data = InsecureRand256();
key.Set(key_data.begin(), key_data.end(), true);
return key;
}
/** A class for scenario-based tests of V2Transport
*
* Each V2TransportTester encapsulates a V2Transport (the one being tested), and can be told to
* interact with it. To do so, it also encapsulates a BIP324Cipher to act as the other side. A
* second V2Transport is not used, as doing so would not permit scenarios that involve sending
* invalid data, or ones using BIP324 features that are not implemented on the sending
* side (like decoy packets).
*/
class V2TransportTester
{
V2Transport m_transport; //!< V2Transport being tested
BIP324Cipher m_cipher; //!< Cipher to help with the other side
bool m_test_initiator; //!< Whether m_transport is the initiator (true) or responder (false)
std::vector<uint8_t> m_sent_garbage; //!< The garbage we've sent to m_transport.
std::vector<uint8_t> m_recv_garbage; //!< The garbage we've received from m_transport.
std::vector<uint8_t> m_to_send; //!< Bytes we have queued up to send to m_transport.
std::vector<uint8_t> m_received; //!< Bytes we have received from m_transport.
std::deque<CSerializedNetMsg> m_msg_to_send; //!< Messages to be sent *by* m_transport to us.
bool m_sent_aad{false};
public:
/** Construct a tester object. test_initiator: whether the tested transport is initiator. */
V2TransportTester(bool test_initiator) :
m_transport(0, test_initiator, SER_NETWORK, INIT_PROTO_VERSION),
m_cipher{GenerateRandomTestKey(), MakeByteSpan(InsecureRand256())},
m_test_initiator(test_initiator) {}
/** Data type returned by Interact:
*
* - std::nullopt: transport error occurred
* - otherwise: a vector of
* - std::nullopt: invalid message received
* - otherwise: a CNetMessage retrieved
*/
using InteractResult = std::optional<std::vector<std::optional<CNetMessage>>>;
/** Send/receive scheduled/available bytes and messages.
*
* This is the only function that interacts with the transport being tested; everything else is
* scheduling things done by Interact(), or processing things learned by it.
*/
InteractResult Interact()
{
std::vector<std::optional<CNetMessage>> ret;
while (true) {
bool progress{false};
// Send bytes from m_to_send to the transport.
if (!m_to_send.empty()) {
Span<const uint8_t> to_send = Span{m_to_send}.first(1 + InsecureRandRange(m_to_send.size()));
size_t old_len = to_send.size();
if (!m_transport.ReceivedBytes(to_send)) {
return std::nullopt; // transport error occurred
}
if (old_len != to_send.size()) {
progress = true;
m_to_send.erase(m_to_send.begin(), m_to_send.begin() + (old_len - to_send.size()));
}
}
// Retrieve messages received by the transport.
if (m_transport.ReceivedMessageComplete() && (!progress || InsecureRandBool())) {
bool reject{false};
auto msg = m_transport.GetReceivedMessage({}, reject);
if (reject) {
ret.push_back(std::nullopt);
} else {
ret.push_back(std::move(msg));
}
progress = true;
}
// Enqueue a message to be sent by the transport to us.
if (!m_msg_to_send.empty() && (!progress || InsecureRandBool())) {
if (m_transport.SetMessageToSend(m_msg_to_send.front())) {
m_msg_to_send.pop_front();
progress = true;
}
}
// Receive bytes from the transport.
const auto& [recv_bytes, _more, _msg_type] = m_transport.GetBytesToSend(!m_msg_to_send.empty());
if (!recv_bytes.empty() && (!progress || InsecureRandBool())) {
size_t to_receive = 1 + InsecureRandRange(recv_bytes.size());
m_received.insert(m_received.end(), recv_bytes.begin(), recv_bytes.begin() + to_receive);
progress = true;
m_transport.MarkBytesSent(to_receive);
}
if (!progress) break;
}
return ret;
}
/** Expose the cipher. */
BIP324Cipher& GetCipher() { return m_cipher; }
/** Schedule bytes to be sent to the transport. */
void Send(Span<const uint8_t> data)
{
m_to_send.insert(m_to_send.end(), data.begin(), data.end());
}
/** Send V1 version message header to the transport. */
void SendV1Version(const MessageStartChars& magic)
{
CMessageHeader hdr(magic, "version", 126 + InsecureRandRange(11));
CDataStream ser(SER_NETWORK, CLIENT_VERSION);
ser << hdr;
m_to_send.insert(m_to_send.end(), UCharCast(ser.data()), UCharCast(ser.data() + ser.size()));
}
/** Schedule bytes to be sent to the transport. */
void Send(Span<const std::byte> data) { Send(MakeUCharSpan(data)); }
/** Schedule our ellswift key to be sent to the transport. */
void SendKey() { Send(m_cipher.GetOurPubKey()); }
/** Schedule specified garbage to be sent to the transport. */
void SendGarbage(Span<const uint8_t> garbage)
{
// Remember the specified garbage (so we can use it as AAD).
m_sent_garbage.assign(garbage.begin(), garbage.end());
// Schedule it for sending.
Send(m_sent_garbage);
}
/** Schedule garbage (of specified length) to be sent to the transport. */
void SendGarbage(size_t garbage_len)
{
// Generate random garbage and send it.
SendGarbage(g_insecure_rand_ctx.randbytes<uint8_t>(garbage_len));
}
/** Schedule garbage (with valid random length) to be sent to the transport. */
void SendGarbage()
{
SendGarbage(InsecureRandRange(V2Transport::MAX_GARBAGE_LEN + 1));
}
/** Schedule a message to be sent to us by the transport. */
void AddMessage(std::string m_type, std::vector<uint8_t> payload)
{
CSerializedNetMsg msg;
msg.m_type = std::move(m_type);
msg.data = std::move(payload);
m_msg_to_send.push_back(std::move(msg));
}
/** Expect ellswift key to have been received from transport and process it.
*
* Many other V2TransportTester functions cannot be called until after ReceiveKey() has been
* called, as no encryption keys are set up before that point.
*/
void ReceiveKey()
{
// When processing a key, enough bytes need to have been received already.
BOOST_REQUIRE(m_received.size() >= EllSwiftPubKey::size());
// Initialize the cipher using it (acting as the opposite side of the tested transport).
m_cipher.Initialize(MakeByteSpan(m_received).first(EllSwiftPubKey::size()), !m_test_initiator);
// Strip the processed bytes off the front of the receive buffer.
m_received.erase(m_received.begin(), m_received.begin() + EllSwiftPubKey::size());
}
/** Schedule an encrypted packet with specified content/aad/ignore to be sent to transport
* (only after ReceiveKey). */
void SendPacket(Span<const uint8_t> content, Span<const uint8_t> aad = {}, bool ignore = false)
{
// Use cipher to construct ciphertext.
std::vector<std::byte> ciphertext;
ciphertext.resize(content.size() + BIP324Cipher::EXPANSION);
m_cipher.Encrypt(
/*contents=*/MakeByteSpan(content),
/*aad=*/MakeByteSpan(aad),
/*ignore=*/ignore,
/*output=*/ciphertext);
// Schedule it for sending.
Send(ciphertext);
}
/** Schedule garbage terminator to be sent to the transport (only after ReceiveKey). */
void SendGarbageTerm()
{
// Schedule the garbage terminator to be sent.
Send(m_cipher.GetSendGarbageTerminator());
}
/** Schedule version packet to be sent to the transport (only after ReceiveKey). */
void SendVersion(Span<const uint8_t> version_data = {}, bool vers_ignore = false)
{
Span<const std::uint8_t> aad;
// Set AAD to garbage only for first packet.
if (!m_sent_aad) aad = m_sent_garbage;
SendPacket(/*content=*/version_data, /*aad=*/aad, /*ignore=*/vers_ignore);
m_sent_aad = true;
}
/** Expect a packet to have been received from transport, process it, and return its contents
* (only after ReceiveKey). Decoys are skipped. Optional associated authenticated data (AAD) is
* expected in the first received packet, no matter if that is a decoy or not. */
std::vector<uint8_t> ReceivePacket(Span<const std::byte> aad = {})
{
std::vector<uint8_t> contents;
// Loop as long as there are ignored packets that are to be skipped.
while (true) {
// When processing a packet, at least enough bytes for its length descriptor must be received.
BOOST_REQUIRE(m_received.size() >= BIP324Cipher::LENGTH_LEN);
// Decrypt the content length.
size_t size = m_cipher.DecryptLength(MakeByteSpan(Span{m_received}.first(BIP324Cipher::LENGTH_LEN)));
// Check that the full packet is in the receive buffer.
BOOST_REQUIRE(m_received.size() >= size + BIP324Cipher::EXPANSION);
// Decrypt the packet contents.
contents.resize(size);
bool ignore{false};
bool ret = m_cipher.Decrypt(
/*input=*/MakeByteSpan(
Span{m_received}.first(size + BIP324Cipher::EXPANSION).subspan(BIP324Cipher::LENGTH_LEN)),
/*aad=*/aad,
/*ignore=*/ignore,
/*contents=*/MakeWritableByteSpan(contents));
BOOST_CHECK(ret);
// Don't expect AAD in further packets.
aad = {};
// Strip the processed packet's bytes off the front of the receive buffer.
m_received.erase(m_received.begin(), m_received.begin() + size + BIP324Cipher::EXPANSION);
// Stop if the ignore bit is not set on this packet.
if (!ignore) break;
}
return contents;
}
/** Expect garbage and garbage terminator to have been received, and process them (only after
* ReceiveKey). */
void ReceiveGarbage()
{
// Figure out the garbage length.
size_t garblen;
for (garblen = 0; garblen <= V2Transport::MAX_GARBAGE_LEN; ++garblen) {
BOOST_REQUIRE(m_received.size() >= garblen + BIP324Cipher::GARBAGE_TERMINATOR_LEN);
auto term_span = MakeByteSpan(Span{m_received}.subspan(garblen, BIP324Cipher::GARBAGE_TERMINATOR_LEN));
if (term_span == m_cipher.GetReceiveGarbageTerminator()) break;
}
// Copy the garbage to a buffer.
m_recv_garbage.assign(m_received.begin(), m_received.begin() + garblen);
// Strip garbage + garbage terminator off the front of the receive buffer.
m_received.erase(m_received.begin(), m_received.begin() + garblen + BIP324Cipher::GARBAGE_TERMINATOR_LEN);
}
/** Expect version packet to have been received, and process it (only after ReceiveKey). */
void ReceiveVersion()
{
auto contents = ReceivePacket(/*aad=*/MakeByteSpan(m_recv_garbage));
// Version packets from real BIP324 peers are expected to be empty, despite the fact that
// this class supports *sending* non-empty version packets (to test that BIP324 peers
// correctly ignore version packet contents).
BOOST_CHECK(contents.empty());
}
/** Expect application packet to have been received, with specified short id and payload.
* (only after ReceiveKey). */
void ReceiveMessage(uint8_t short_id, Span<const uint8_t> payload)
{
auto ret = ReceivePacket();
BOOST_CHECK(ret.size() == payload.size() + 1);
BOOST_CHECK(ret[0] == short_id);
BOOST_CHECK(Span{ret}.subspan(1) == payload);
}
/** Expect application packet to have been received, with specified 12-char message type and
* payload (only after ReceiveKey). */
void ReceiveMessage(const std::string& m_type, Span<const uint8_t> payload)
{
auto ret = ReceivePacket();
BOOST_REQUIRE(ret.size() == payload.size() + 1 + CMessageHeader::COMMAND_SIZE);
BOOST_CHECK(ret[0] == 0);
for (unsigned i = 0; i < 12; ++i) {
if (i < m_type.size()) {
BOOST_CHECK(ret[1 + i] == m_type[i]);
} else {
BOOST_CHECK(ret[1 + i] == 0);
}
}
BOOST_CHECK(Span{ret}.subspan(1 + CMessageHeader::COMMAND_SIZE) == payload);
}
/** Schedule an encrypted packet with specified message type and payload to be sent to
* transport (only after ReceiveKey). */
void SendMessage(std::string mtype, Span<const uint8_t> payload)
{
// Construct contents consisting of 0x00 + 12-byte message type + payload.
std::vector<uint8_t> contents(1 + CMessageHeader::COMMAND_SIZE + payload.size());
std::copy(mtype.begin(), mtype.end(), reinterpret_cast<char*>(contents.data() + 1));
std::copy(payload.begin(), payload.end(), contents.begin() + 1 + CMessageHeader::COMMAND_SIZE);
// Send a packet with that as contents.
SendPacket(contents);
}
/** Schedule an encrypted packet with specified short message id and payload to be sent to
* transport (only after ReceiveKey). */
void SendMessage(uint8_t short_id, Span<const uint8_t> payload)
{
// Construct contents consisting of short_id + payload.
std::vector<uint8_t> contents(1 + payload.size());
contents[0] = short_id;
std::copy(payload.begin(), payload.end(), contents.begin() + 1);
// Send a packet with that as contents.
SendPacket(contents);
}
/** Test whether the transport's session ID matches the session ID we expect. */
void CompareSessionIDs() const
{
auto info = m_transport.GetInfo();
BOOST_CHECK(info.session_id);
BOOST_CHECK(uint256(MakeUCharSpan(m_cipher.GetSessionID())) == *info.session_id);
}
/** Introduce a bit error in the data scheduled to be sent. */
void Damage()
{
m_to_send[InsecureRandRange(m_to_send.size())] ^= (uint8_t{1} << InsecureRandRange(8));
}
};
} // namespace
BOOST_AUTO_TEST_CASE(v2transport_test)
{
// A mostly normal scenario, testing a transport in initiator mode.
for (int i = 0; i < 10; ++i) {
V2TransportTester tester(true);
auto ret = tester.Interact();
BOOST_REQUIRE(ret && ret->empty());
tester.SendKey();
tester.SendGarbage();
tester.ReceiveKey();
tester.SendGarbageTerm();
tester.SendVersion();
ret = tester.Interact();
BOOST_REQUIRE(ret && ret->empty());
tester.ReceiveGarbage();
tester.ReceiveVersion();
tester.CompareSessionIDs();
auto msg_data_1 = g_insecure_rand_ctx.randbytes<uint8_t>(InsecureRandRange(100000));
auto msg_data_2 = g_insecure_rand_ctx.randbytes<uint8_t>(InsecureRandRange(1000));
tester.SendMessage(uint8_t(4), msg_data_1); // cmpctblock short id
tester.SendMessage(0, {}); // Invalidly encoded message
tester.SendMessage("tx", msg_data_2); // 12-character encoded message type
ret = tester.Interact();
BOOST_REQUIRE(ret && ret->size() == 3);
BOOST_CHECK((*ret)[0] && (*ret)[0]->m_type == "cmpctblock" && Span{(*ret)[0]->m_recv} == MakeByteSpan(msg_data_1));
BOOST_CHECK(!(*ret)[1]);
BOOST_CHECK((*ret)[2] && (*ret)[2]->m_type == "tx" && Span{(*ret)[2]->m_recv} == MakeByteSpan(msg_data_2));
// Then send a message with a bit error, expecting failure. It's possible this failure does
// not occur immediately (when the length descriptor was modified), but it should come
// eventually, and no messages can be delivered anymore.
tester.SendMessage("bad", msg_data_1);
tester.Damage();
while (true) {
ret = tester.Interact();
if (!ret) break; // failure
BOOST_CHECK(ret->size() == 0); // no message can be delivered
// Send another message.
auto msg_data_3 = g_insecure_rand_ctx.randbytes<uint8_t>(InsecureRandRange(10000));
tester.SendMessage(uint8_t(12), msg_data_3); // getheaders short id
}
}
// Normal scenario, with a transport in responder node.
for (int i = 0; i < 10; ++i) {
V2TransportTester tester(false);
tester.SendKey();
tester.SendGarbage();
auto ret = tester.Interact();
BOOST_REQUIRE(ret && ret->empty());
tester.ReceiveKey();
tester.SendGarbageTerm();
tester.SendVersion();
ret = tester.Interact();
BOOST_REQUIRE(ret && ret->empty());
tester.ReceiveGarbage();
tester.ReceiveVersion();
tester.CompareSessionIDs();
auto msg_data_1 = g_insecure_rand_ctx.randbytes<uint8_t>(InsecureRandRange(100000));
auto msg_data_2 = g_insecure_rand_ctx.randbytes<uint8_t>(InsecureRandRange(1000));
tester.SendMessage(uint8_t(14), msg_data_1); // inv short id
tester.SendMessage(uint8_t(19), msg_data_2); // pong short id
ret = tester.Interact();
BOOST_REQUIRE(ret && ret->size() == 2);
BOOST_CHECK((*ret)[0] && (*ret)[0]->m_type == "inv" && Span{(*ret)[0]->m_recv} == MakeByteSpan(msg_data_1));
BOOST_CHECK((*ret)[1] && (*ret)[1]->m_type == "pong" && Span{(*ret)[1]->m_recv} == MakeByteSpan(msg_data_2));
// Then send a too-large message.
auto msg_data_3 = g_insecure_rand_ctx.randbytes<uint8_t>(4005000);
tester.SendMessage(uint8_t(11), msg_data_3); // getdata short id
ret = tester.Interact();
BOOST_CHECK(!ret);
}
// Various valid but unusual scenarios.
for (int i = 0; i < 50; ++i) {
/** Whether an initiator or responder is being tested. */
bool initiator = InsecureRandBool();
/** Use either 0 bytes or the maximum possible (4095 bytes) garbage length. */
size_t garb_len = InsecureRandBool() ? 0 : V2Transport::MAX_GARBAGE_LEN;
/** How many decoy packets to send before the version packet. */
unsigned num_ignore_version = InsecureRandRange(10);
/** What data to send in the version packet (ignored by BIP324 peers, but reserved for future extensions). */
auto ver_data = g_insecure_rand_ctx.randbytes<uint8_t>(InsecureRandBool() ? 0 : InsecureRandRange(1000));
/** Whether to immediately send key and garbage out (required for responders, optional otherwise). */
bool send_immediately = !initiator || InsecureRandBool();
/** How many decoy packets to send before the first and second real message. */
unsigned num_decoys_1 = InsecureRandRange(1000), num_decoys_2 = InsecureRandRange(1000);
V2TransportTester tester(initiator);
if (send_immediately) {
tester.SendKey();
tester.SendGarbage(garb_len);
}
auto ret = tester.Interact();
BOOST_REQUIRE(ret && ret->empty());
if (!send_immediately) {
tester.SendKey();
tester.SendGarbage(garb_len);
}
tester.ReceiveKey();
tester.SendGarbageTerm();
for (unsigned v = 0; v < num_ignore_version; ++v) {
size_t ver_ign_data_len = InsecureRandBool() ? 0 : InsecureRandRange(1000);
auto ver_ign_data = g_insecure_rand_ctx.randbytes<uint8_t>(ver_ign_data_len);
tester.SendVersion(ver_ign_data, true);
}
tester.SendVersion(ver_data, false);
ret = tester.Interact();
BOOST_REQUIRE(ret && ret->empty());
tester.ReceiveGarbage();
tester.ReceiveVersion();
tester.CompareSessionIDs();
for (unsigned d = 0; d < num_decoys_1; ++d) {
auto decoy_data = g_insecure_rand_ctx.randbytes<uint8_t>(InsecureRandRange(1000));
tester.SendPacket(/*content=*/decoy_data, /*aad=*/{}, /*ignore=*/true);
}
auto msg_data_1 = g_insecure_rand_ctx.randbytes<uint8_t>(InsecureRandRange(4000000));
tester.SendMessage(uint8_t(28), msg_data_1);
for (unsigned d = 0; d < num_decoys_2; ++d) {
auto decoy_data = g_insecure_rand_ctx.randbytes<uint8_t>(InsecureRandRange(1000));
tester.SendPacket(/*content=*/decoy_data, /*aad=*/{}, /*ignore=*/true);
}
auto msg_data_2 = g_insecure_rand_ctx.randbytes<uint8_t>(InsecureRandRange(1000));
tester.SendMessage(uint8_t(13), msg_data_2); // headers short id
// Send invalidly-encoded message
tester.SendMessage(std::string("blocktxn\x00\x00\x00a", CMessageHeader::COMMAND_SIZE), {});
tester.SendMessage("foobar", {}); // test receiving unknown message type
tester.AddMessage("barfoo", {}); // test sending unknown message type
ret = tester.Interact();
BOOST_REQUIRE(ret && ret->size() == 4);
BOOST_CHECK((*ret)[0] && (*ret)[0]->m_type == "addrv2" && Span{(*ret)[0]->m_recv} == MakeByteSpan(msg_data_1));
BOOST_CHECK((*ret)[1] && (*ret)[1]->m_type == "headers" && Span{(*ret)[1]->m_recv} == MakeByteSpan(msg_data_2));
BOOST_CHECK(!(*ret)[2]);
BOOST_CHECK((*ret)[3] && (*ret)[3]->m_type == "foobar" && (*ret)[3]->m_recv.empty());
tester.ReceiveMessage("barfoo", {});
}
// Too long garbage (initiator).
{
V2TransportTester tester(true);
auto ret = tester.Interact();
BOOST_REQUIRE(ret && ret->empty());
tester.SendKey();
tester.SendGarbage(V2Transport::MAX_GARBAGE_LEN + 1);
tester.ReceiveKey();
tester.SendGarbageTerm();
ret = tester.Interact();
BOOST_CHECK(!ret);
}
// Too long garbage (responder).
{
V2TransportTester tester(false);
tester.SendKey();
tester.SendGarbage(V2Transport::MAX_GARBAGE_LEN + 1);
auto ret = tester.Interact();
BOOST_REQUIRE(ret && ret->empty());
tester.ReceiveKey();
tester.SendGarbageTerm();
ret = tester.Interact();
BOOST_CHECK(!ret);
}
// Send garbage that includes the first 15 garbage terminator bytes somewhere.
{
V2TransportTester tester(true);
auto ret = tester.Interact();
BOOST_REQUIRE(ret && ret->empty());
tester.SendKey();
tester.ReceiveKey();
/** The number of random garbage bytes before the included first 15 bytes of terminator. */
size_t len_before = InsecureRandRange(V2Transport::MAX_GARBAGE_LEN - 16 + 1);
/** The number of random garbage bytes after it. */
size_t len_after = InsecureRandRange(V2Transport::MAX_GARBAGE_LEN - 16 - len_before + 1);
// Construct len_before + 16 + len_after random bytes.
auto garbage = g_insecure_rand_ctx.randbytes<uint8_t>(len_before + 16 + len_after);
// Replace the designed 16 bytes in the middle with the to-be-sent garbage terminator.
auto garb_term = MakeUCharSpan(tester.GetCipher().GetSendGarbageTerminator());
std::copy(garb_term.begin(), garb_term.begin() + 16, garbage.begin() + len_before);
// Introduce a bit error in the last byte of that copied garbage terminator, making only
// the first 15 of them match.
garbage[len_before + 15] ^= (uint8_t(1) << InsecureRandRange(8));
tester.SendGarbage(garbage);
tester.SendGarbageTerm();
tester.SendVersion();
ret = tester.Interact();
BOOST_REQUIRE(ret && ret->empty());
tester.ReceiveGarbage();
tester.ReceiveVersion();
tester.CompareSessionIDs();
auto msg_data_1 = g_insecure_rand_ctx.randbytes<uint8_t>(4000000); // test that receiving 4M payload works
auto msg_data_2 = g_insecure_rand_ctx.randbytes<uint8_t>(4000000); // test that sending 4M payload works
tester.SendMessage(uint8_t(InsecureRandRange(223) + 33), {}); // unknown short id
tester.SendMessage(uint8_t(2), msg_data_1); // "block" short id
tester.AddMessage("blocktxn", msg_data_2); // schedule blocktxn to be sent to us
ret = tester.Interact();
BOOST_REQUIRE(ret && ret->size() == 2);
BOOST_CHECK(!(*ret)[0]);
BOOST_CHECK((*ret)[1] && (*ret)[1]->m_type == "block" && Span{(*ret)[1]->m_recv} == MakeByteSpan(msg_data_1));
tester.ReceiveMessage(uint8_t(3), msg_data_2); // "blocktxn" short id
}
// Send correct network's V1 header
{
V2TransportTester tester(false);
tester.SendV1Version(Params().MessageStart());
auto ret = tester.Interact();
BOOST_CHECK(ret);
}
// Send wrong network's V1 header
{
V2TransportTester tester(false);
tester.SendV1Version(CChainParams::Main()->MessageStart());
auto ret = tester.Interact();
BOOST_CHECK(!ret);
}
}
BOOST_AUTO_TEST_SUITE_END()
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