diff --git a/src/addrman.cpp b/src/addrman.cpp index a04265c382..b1b53b3698 100644 --- a/src/addrman.cpp +++ b/src/addrman.cpp @@ -6,9 +6,9 @@ #include #include -#include -#include #include +#include +#include int CAddrInfo::GetTriedBucket(const uint256& nKey, const std::vector &asmap) const { @@ -16,7 +16,7 @@ int CAddrInfo::GetTriedBucket(const uint256& nKey, const std::vector &asma uint64_t hash2 = (CHashWriter(SER_GETHASH, 0) << nKey << GetGroup(asmap) << (hash1 % ADDRMAN_TRIED_BUCKETS_PER_GROUP)).GetHash().GetCheapHash(); int tried_bucket = hash2 % ADDRMAN_TRIED_BUCKET_COUNT; uint32_t mapped_as = GetMappedAS(asmap); - LogPrint(BCLog::NET, "IP %s mapped to AS%i belongs to tried bucket %i.\n", ToStringIP(), mapped_as, tried_bucket); + LogPrint(BCLog::NET, "IP %s mapped to AS%i belongs to tried bucket %i\n", ToStringIP(), mapped_as, tried_bucket); return tried_bucket; } @@ -27,7 +27,7 @@ int CAddrInfo::GetNewBucket(const uint256& nKey, const CNetAddr& src, const std: uint64_t hash2 = (CHashWriter(SER_GETHASH, 0) << nKey << vchSourceGroupKey << (hash1 % ADDRMAN_NEW_BUCKETS_PER_SOURCE_GROUP)).GetHash().GetCheapHash(); int new_bucket = hash2 % ADDRMAN_NEW_BUCKET_COUNT; uint32_t mapped_as = GetMappedAS(asmap); - LogPrint(BCLog::NET, "IP %s mapped to AS%i belongs to new bucket %i.\n", ToStringIP(), mapped_as, new_bucket); + LogPrint(BCLog::NET, "IP %s mapped to AS%i belongs to new bucket %i\n", ToStringIP(), mapped_as, new_bucket); return new_bucket; } @@ -658,12 +658,12 @@ std::vector CAddrMan::DecodeAsmap(fs::path path) FILE *filestr = fsbridge::fopen(path, "rb"); CAutoFile file(filestr, SER_DISK, CLIENT_VERSION); if (file.IsNull()) { - LogPrintf("Failed to open asmap file from disk.\n"); + LogPrintf("Failed to open asmap file from disk\n"); return bits; } fseek(filestr, 0, SEEK_END); int length = ftell(filestr); - LogPrintf("Opened asmap file %s (%d bytes) from disk.\n", path, length); + LogPrintf("Opened asmap file %s (%d bytes) from disk\n", path, length); fseek(filestr, 0, SEEK_SET); char cur_byte; for (int i = 0; i < length; ++i) { diff --git a/src/addrman.h b/src/addrman.h index 0698e1c555..9ea6441c06 100644 --- a/src/addrman.h +++ b/src/addrman.h @@ -6,23 +6,22 @@ #ifndef BITCOIN_ADDRMAN_H #define BITCOIN_ADDRMAN_H +#include #include #include #include #include #include #include -#include +#include +#include +#include #include #include #include -#include -#include #include -#include -#include - +#include /** * Extended statistics about a CAddress diff --git a/src/init.cpp b/src/init.cpp index da31b5e992..36fa28c42f 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -511,6 +511,7 @@ void SetupServerArgs() gArgs.AddArg("-timestampindex", strprintf("Maintain a timestamp index for block hashes, used to query blocks hashes by a range of timestamps (default: %u)", DEFAULT_TIMESTAMPINDEX), false, OptionsCategory::INDEXING); gArgs.AddArg("-txindex", strprintf("Maintain a full transaction index, used by the getrawtransaction rpc call (default: %u)", DEFAULT_TXINDEX), false, OptionsCategory::INDEXING); + gArgs.AddArg("-asmap=", strprintf("Specify asn mapping used for bucketing of the peers (default: %s). Relative paths will be prefixed by the net-specific datadir location.", DEFAULT_ASMAP_FILENAME), false, OptionsCategory::CONNECTION); gArgs.AddArg("-addnode=", "Add a node to connect to and attempt to keep the connection open (see the `addnode` RPC command help for more info). This option can be specified multiple times to add multiple nodes.", false, OptionsCategory::CONNECTION); gArgs.AddArg("-allowprivatenet", strprintf("Allow RFC1918 addresses to be relayed and connected to (default: %u)", DEFAULT_ALLOWPRIVATENET), false, OptionsCategory::CONNECTION); gArgs.AddArg("-banscore=", strprintf("Threshold for disconnecting misbehaving peers (default: %u)", DEFAULT_BANSCORE_THRESHOLD), false, OptionsCategory::CONNECTION); @@ -543,7 +544,6 @@ void SetupServerArgs() gArgs.AddArg("-timeout=", strprintf("Specify connection timeout in milliseconds (minimum: 1, default: %d)", DEFAULT_CONNECT_TIMEOUT), false, OptionsCategory::CONNECTION); gArgs.AddArg("-torcontrol=:", strprintf("Tor control port to use if onion listening enabled (default: %s)", DEFAULT_TOR_CONTROL), false, OptionsCategory::CONNECTION); gArgs.AddArg("-torpassword=", "Tor control port password (default: empty)", false, OptionsCategory::CONNECTION); - gArgs.AddArg("-asmap=", "Specify asn mapping used for bucketing of the peers. Path should be relative to the -datadir path.", false, OptionsCategory::CONNECTION); #ifdef USE_UPNP #if USE_UPNP gArgs.AddArg("-upnp", "Use UPnP to map the listening port (default: 1 when listening and no -proxy)", false, OptionsCategory::CONNECTION); @@ -1901,6 +1901,31 @@ bool AppInitMain() return InitError(ResolveErrMsg("externalip", strAddr)); } + // Read asmap file if configured + if (gArgs.IsArgSet("-asmap")) { + fs::path asmap_path = fs::path(gArgs.GetArg("-asmap", "")); + if (asmap_path.empty()) { + asmap_path = DEFAULT_ASMAP_FILENAME; + } + if (!asmap_path.is_absolute()) { + asmap_path = GetDataDir() / asmap_path; + } + if (!fs::exists(asmap_path)) { + InitError(strprintf(_("Could not find asmap file %s"), asmap_path)); + return false; + } + std::vector asmap = CAddrMan::DecodeAsmap(asmap_path); + if (asmap.size() == 0) { + InitError(strprintf(_("Could not parse asmap file %s"), asmap_path)); + return false; + } + const uint256 asmap_version = SerializeHash(asmap); + g_connman->SetAsmap(asmap); + LogPrintf("Using asmap version %s for IP bucketing\n", asmap_version.ToString()); + } else { + LogPrintf("Using /16 prefix for IP bucketing\n"); + } + #if ENABLE_ZMQ g_zmq_notification_interface = CZMQNotificationInterface::Create(); @@ -2458,25 +2483,6 @@ bool AppInitMain() return false; } - // Read asmap file if configured - if (gArgs.IsArgSet("-asmap")) { - std::string asmap_file = gArgs.GetArg("-asmap", ""); - if (asmap_file.empty()) { - asmap_file = DEFAULT_ASMAP_FILENAME; - } - const fs::path asmap_path = GetDataDir() / asmap_file; - std::vector asmap = CAddrMan::DecodeAsmap(asmap_path); - if (asmap.size() == 0) { - InitError(strprintf(_("Could not find or parse specified asmap: '%s'"), asmap_path)); - return false; - } - g_connman->SetAsmap(asmap); - const uint256 asmap_version = SerializeHash(asmap); - LogPrintf("Using asmap version %s for IP bucketing.\n", asmap_version.ToString()); - } else { - LogPrintf("Using /16 prefix for IP bucketing.\n"); - } - // ********************************************************* Step 13: finished SetRPCWarmupFinished(); diff --git a/src/netaddress.cpp b/src/netaddress.cpp index dabdd8f90c..0861cb2487 100644 --- a/src/netaddress.cpp +++ b/src/netaddress.cpp @@ -202,6 +202,11 @@ bool CNetAddr::IsRFC7343() const bool CNetAddr::IsTor() const { return m_net == NET_ONION; } +bool CNetAddr::IsHeNet() const +{ + return (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x04 && GetByte(12) == 0x70); +} + bool CNetAddr::IsLocal() const { // IPv4 loopback @@ -439,9 +444,8 @@ std::vector CNetAddr::GetGroup(const std::vector &asmap) co { nStartByte = 6; nBits = 4; - } - // for he.net, use /36 groups - else if (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x04 && GetByte(12) == 0x70) + } else if (IsHeNet()) { + // for he.net, use /36 groups nBits = 36; // for the rest of the IPv6 network, use /32 groups else diff --git a/src/netaddress.h b/src/netaddress.h index 1e992d44c1..f24c1768d0 100644 --- a/src/netaddress.h +++ b/src/netaddress.h @@ -109,8 +109,9 @@ class CNetAddr bool IsRFC4843() const; // IPv6 ORCHID (deprecated) (2001:10::/28) bool IsRFC7343() const; // IPv6 ORCHIDv2 (2001:20::/28) bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64) - bool IsRFC6052() const; // IPv6 well-known prefix (64:FF9B::/96) - bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96) + bool IsRFC6052() const; // IPv6 well-known prefix for IPv4-embedded address (64:FF9B::/96) + bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96) (actually defined in RFC2765) + bool IsHeNet() const; // IPv6 Hurricane Electric - https://he.net (2001:0470::/36) bool IsTor() const; bool IsLocal() const; bool IsRoutable() const; diff --git a/test/functional/feature_asmap.py b/test/functional/feature_asmap.py new file mode 100755 index 0000000000..60c4dd1632 --- /dev/null +++ b/test/functional/feature_asmap.py @@ -0,0 +1,106 @@ +#!/usr/bin/env python3 +# 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. +"""Test asmap config argument for ASN-based IP bucketing. + +Verify node behaviour and debug log when launching dashd in these cases: + +1. `dashd` with no -asmap arg, using /16 prefix for IP bucketing + +2. `dashd -asmap=`, using the unit test skeleton asmap + +3. `dashd -asmap=`, using the unit test skeleton asmap + +4. `dashd -asmap/-asmap=` with no file specified, using the default asmap + +5. `dashd -asmap` with no file specified and a missing default asmap file + +6. `dashd -asmap` with an empty (unparsable) default asmap file + +The tests are order-independent. + +""" +import os +import shutil + +from test_framework.test_framework import BitcoinTestFramework + +DEFAULT_ASMAP_FILENAME = 'ip_asn.map' # defined in src/init.cpp +ASMAP = '../../src/test/data/asmap.raw' # path to unit test skeleton asmap +VERSION = 'fec61fa21a9f46f3b17bdcd660d7f4cd90b966aad3aec593c99b35f0aca15853' + +def expected_messages(filename): + return ['Opened asmap file "{}" (59 bytes) from disk'.format(filename), + 'Using asmap version {} for IP bucketing'.format(VERSION)] + +class AsmapTest(BitcoinTestFramework): + def set_test_params(self): + self.setup_clean_chain = False + self.num_nodes = 1 + + def test_without_asmap_arg(self): + self.log.info('Test dashd with no -asmap arg passed') + self.stop_node(0) + with self.node.assert_debug_log(['Using /16 prefix for IP bucketing']): + self.start_node(0) + + def test_asmap_with_absolute_path(self): + self.log.info('Test dashd -asmap=') + self.stop_node(0) + filename = os.path.join(self.datadir, 'my-map-file.map') + shutil.copyfile(self.asmap_raw, filename) + with self.node.assert_debug_log(expected_messages(filename)): + self.start_node(0, ['-asmap={}'.format(filename)]) + os.remove(filename) + + def test_asmap_with_relative_path(self): + self.log.info('Test dashd -asmap=') + self.stop_node(0) + name = 'ASN_map' + filename = os.path.join(self.datadir, name) + shutil.copyfile(self.asmap_raw, filename) + with self.node.assert_debug_log(expected_messages(filename)): + self.start_node(0, ['-asmap={}'.format(name)]) + os.remove(filename) + + def test_default_asmap(self): + shutil.copyfile(self.asmap_raw, self.default_asmap) + for arg in ['-asmap', '-asmap=']: + self.log.info('Test dashd {} (using default map file)'.format(arg)) + self.stop_node(0) + with self.node.assert_debug_log(expected_messages(self.default_asmap)): + self.start_node(0, [arg]) + os.remove(self.default_asmap) + + def test_default_asmap_with_missing_file(self): + self.log.info('Test dashd -asmap with missing default map file') + self.stop_node(0) + msg = "Error: Could not find asmap file \"{}\"".format(self.default_asmap) + self.node.assert_start_raises_init_error(extra_args=['-asmap'], expected_msg=msg) + + def test_empty_asmap(self): + self.log.info('Test dashd -asmap with empty map file') + self.stop_node(0) + with open(self.default_asmap, "w", encoding="utf-8") as f: + f.write("") + msg = "Error: Could not parse asmap file \"{}\"".format(self.default_asmap) + self.node.assert_start_raises_init_error(extra_args=['-asmap'], expected_msg=msg) + os.remove(self.default_asmap) + + def run_test(self): + self.node = self.nodes[0] + self.datadir = os.path.join(self.node.datadir, self.chain) + self.default_asmap = os.path.join(self.datadir, DEFAULT_ASMAP_FILENAME) + self.asmap_raw = os.path.join(os.path.dirname(os.path.realpath(__file__)), ASMAP) + + self.test_without_asmap_arg() + self.test_asmap_with_absolute_path() + self.test_asmap_with_relative_path() + self.test_default_asmap() + self.test_default_asmap_with_missing_file() + self.test_empty_asmap() + + +if __name__ == '__main__': + AsmapTest().main() diff --git a/test/functional/test_runner.py b/test/functional/test_runner.py index 7106bbbee8..e5c1c0b022 100755 --- a/test/functional/test_runner.py +++ b/test/functional/test_runner.py @@ -168,6 +168,7 @@ BASE_SCRIPTS= [ 'feature_dip0020_activation.py', 'feature_uacomment.py', 'p2p_unrequested_blocks.py', + 'feature_asmap.py', 'feature_logging.py', 'p2p_node_network_limited.py', 'feature_blocksdir.py',