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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

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1#!/usr/bin/env python3
2# Copyright (c) 2017-present The Bitcoin Core developers
3# Distributed under the MIT software license, see the accompanying
4# file COPYING or http://www.opensource.org/licenses/mit-license.php.
5"""Test message sending before handshake completion.
6
7Before receiving a VERACK, a node should not send anything but VERSION/VERACK
8and feature negotiation messages (WTXIDRELAY, SENDADDRV2, FEATURE).
9
10This test connects to a node and sends it a few messages, trying to entice it
11into sending us something it shouldn't."""
12
13import time
14
15from test_framework.messages import (
16    msg_getaddr,
17    msg_ping,
18    msg_version,
19)
20from test_framework.p2p import (
21    P2PInterface,
22    P2P_SUBVERSION,
23    P2P_SERVICES,
24    P2P_VERSION_RELAY,
25)
26from test_framework.test_framework import BitcoinTestFramework
27from test_framework.util import (
28    assert_equal,
29    assert_greater_than_or_equal,
30)
31
32PEER_TIMEOUT = 3
33
34
35class LazyPeer(P2PInterface):
36    def __init__(self):
37        super().__init__()
38        self.unexpected_msg = False
39        self.ever_connected = False
40        self.got_wtxidrelay = False
41        self.got_sendaddrv2 = False
42        self.got_feature = False
43
44    def bad_message(self, message):
45        self.unexpected_msg = True
46        print("should not have received message: %s" % message.msgtype)
47
48    def on_open(self):
49        self.ever_connected = True
50
51    # Does not respond to "version" with "verack"
52    def on_version(self, message): self.bad_message(message)
53    def on_verack(self, message): self.bad_message(message)
54    def on_inv(self, message): self.bad_message(message)
55    def on_addr(self, message): self.bad_message(message)
56    def on_getdata(self, message): self.bad_message(message)
57    def on_getblocks(self, message): self.bad_message(message)
58    def on_tx(self, message): self.bad_message(message)
59    def on_block(self, message): self.bad_message(message)
60    def on_getaddr(self, message): self.bad_message(message)
61    def on_headers(self, message): self.bad_message(message)
62    def on_getheaders(self, message): self.bad_message(message)
63    def on_ping(self, message): self.bad_message(message)
64    def on_mempool(self, message): self.bad_message(message)
65    def on_pong(self, message): self.bad_message(message)
66    def on_feefilter(self, message): self.bad_message(message)
67    def on_sendheaders(self, message): self.bad_message(message)
68    def on_sendcmpct(self, message): self.bad_message(message)
69    def on_cmpctblock(self, message): self.bad_message(message)
70    def on_getblocktxn(self, message): self.bad_message(message)
71    def on_blocktxn(self, message): self.bad_message(message)
72    def on_wtxidrelay(self, message): self.got_wtxidrelay = True
73    def on_sendaddrv2(self, message): self.got_sendaddrv2 = True
74    def on_feature(self, message): self.got_feature = True
75
76
77# Peer that sends a version but not a verack.
78class NoVerackIdlePeer(LazyPeer):
79    def __init__(self):
80        self.version_received = False
81        super().__init__()
82
83    def on_verack(self, message): pass
84    # When version is received, don't reply with a verack. Instead, see if the
85    # node will give us a message that it shouldn't. This is not an exhaustive
86    # list!
87    def on_version(self, message):
88        self.version_received = True
89        self.send_without_ping(msg_ping())
90        self.send_without_ping(msg_getaddr())
91
92
93class P2PVersionStore(P2PInterface):
94    version_received = None
95
96    def on_version(self, msg):
97        # Responds with an appropriate verack
98        super().on_version(msg)
99        self.version_received = msg
100
101
102class P2PLeakTest(BitcoinTestFramework):
103    def set_test_params(self):
104        self.num_nodes = 1
105        self.extra_args = [[f"-peertimeout={PEER_TIMEOUT}"]]
106
107    def create_old_version(self, nversion):
108        old_version_msg = msg_version()
109        old_version_msg.nVersion = nversion
110        old_version_msg.strSubVer = P2P_SUBVERSION
111        old_version_msg.nServices = P2P_SERVICES
112        old_version_msg.relay = P2P_VERSION_RELAY
113        return old_version_msg
114
115    def run_test(self):
116        self.log.info('Check that the node doesn\'t send unexpected messages before handshake completion')
117        # Peer that never sends a version, nor any other messages. It shouldn't receive anything from the node.
118        no_version_idle_peer = self.nodes[0].add_p2p_connection(LazyPeer(), send_version=False, wait_for_verack=False)
119
120        # Peer that sends a version but not a verack.
121        no_verack_idle_peer = self.nodes[0].add_p2p_connection(NoVerackIdlePeer(), wait_for_verack=False)
122
123        # Pre-wtxidRelay peer that sends a version but not a verack and does not support feature negotiation
124        # messages which start at nVersion >= 70016
125        pre_wtxidrelay_peer = self.nodes[0].add_p2p_connection(NoVerackIdlePeer(), send_version=False, wait_for_verack=False)
126        pre_wtxidrelay_peer.send_without_ping(self.create_old_version(70015))
127
128        # Wait until the peer gets the verack in response to the version. Though, don't wait for the node to receive the
129        # verack, since the peer never sent one
130        no_verack_idle_peer.wait_for_verack()
131        pre_wtxidrelay_peer.wait_for_verack()
132
133        no_version_idle_peer.wait_until(lambda: no_version_idle_peer.ever_connected)
134        no_verack_idle_peer.wait_until(lambda: no_verack_idle_peer.version_received)
135        pre_wtxidrelay_peer.wait_until(lambda: pre_wtxidrelay_peer.version_received)
136
137        # Mine a block and make sure that it's not sent to the connected peers
138        self.generate(self.nodes[0], nblocks=1)
139
140        # Give the node enough time to possibly leak out a message
141        time.sleep(PEER_TIMEOUT + 2)
142
143        self.log.info("Connect peer to ensure the net thread runs the disconnect logic at least once")
144        self.nodes[0].add_p2p_connection(P2PInterface())
145
146        # Make sure only expected messages came in
147        assert not no_version_idle_peer.unexpected_msg
148        assert not no_version_idle_peer.got_wtxidrelay
149        assert not no_version_idle_peer.got_sendaddrv2
150        assert not no_version_idle_peer.got_feature
151
152        assert not no_verack_idle_peer.unexpected_msg
153        assert no_verack_idle_peer.got_wtxidrelay
154        assert no_verack_idle_peer.got_sendaddrv2
155        #assert no_verack_idle_peer.got_feature ## uncomment once a feature message is supported
156
157        assert not pre_wtxidrelay_peer.unexpected_msg
158        assert not pre_wtxidrelay_peer.got_wtxidrelay
159        assert not pre_wtxidrelay_peer.got_sendaddrv2
160        assert not pre_wtxidrelay_peer.got_feature
161
162        # Expect peers to be disconnected due to timeout
163        assert not no_version_idle_peer.is_connected
164        assert not no_verack_idle_peer.is_connected
165        assert not pre_wtxidrelay_peer.is_connected
166
167        self.log.info('Check that the version message does not leak the local address of the node')
168        p2p_version_store = self.nodes[0].add_p2p_connection(P2PVersionStore())
169        ver = p2p_version_store.version_received
170        # Check that received time is within one hour of now
171        assert_greater_than_or_equal(ver.nTime, time.time() - 3600)
172        assert_greater_than_or_equal(time.time() + 3600, ver.nTime)
173        assert_equal(ver.addrFrom.port, 0)
174        assert_equal(ver.addrFrom.ip, '0.0.0.0')
175        assert_equal(ver.nStartingHeight, 201)
176        assert_equal(ver.relay, 1)
177
178        self.log.info('Check that old peers are disconnected')
179        p2p_old_peer = self.nodes[0].add_p2p_connection(P2PInterface(), send_version=False, wait_for_verack=False)
180        with self.nodes[0].assert_debug_log(["using obsolete version 31799, disconnecting peer=5"]):
181            p2p_old_peer.send_without_ping(self.create_old_version(31799))
182            p2p_old_peer.wait_for_disconnect()
183
184
185if __name__ == '__main__':
186    P2PLeakTest(__file__).main()
187

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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