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Merge bitcoin/bitcoin#22362: Drop only invalid entries when reading banlist.json

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faa6c3d44c861c0486c1369e1d098b7645ab07cd net: Drop only invalid entries when reading banlist.json (MarcoFalke)

Pull request description:

  All entries will be dropped when there is at least one invalid one in `banlist.json`. Fix this by only dropping invalid ones.

  Also suggested in https://github.com/bitcoin/bitcoin/pull/20966#issuecomment-861150204

ACKs for top commit:
  laanwj:
    Re-ACK faa6c3d44c861c0486c1369e1d098b7645ab07cd

Tree-SHA512: 5a58e7f1dcabf78d0c65d8c6d5d997063af1efeaa50ca7730fc00056fda7e0061b6f7a38907ea045fe667c9f61d392e01e556b425a95e6b126e3c41cd33deb83
This commit is contained in:
W. J. van der Laan 2021-12-15 11:48:21 +01:00 committed by Vijay
parent 8b3a486702
commit bd67f80634
No known key found for this signature in database
GPG Key ID: 47820EC166FDF549
3 changed files with 57 additions and 4 deletions
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1
src/Makefile.test.include
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@ -77,6 +77,7 @@ BITCOIN_TESTS =\
test/addrman_tests.cpp \
test/amount_tests.cpp \
test/allocator_tests.cpp \
test/banman_tests.cpp \
test/base32_tests.cpp \
test/base58_tests.cpp \
test/base64_tests.cpp \

17
src/net_types.cpp
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@ -4,12 +4,16 @@
#include <net_types.h>
#include <logging.h>
#include <netaddress.h>
#include <netbase.h>
#include <univalue.h>
static const char* BANMAN_JSON_VERSION_KEY{"version"};
CBanEntry::CBanEntry(const UniValue& json)
: nVersion(json["version"].get_int()), nCreateTime(json["ban_created"].get_int64()),
: nVersion(json[BANMAN_JSON_VERSION_KEY].get_int()),
nCreateTime(json["ban_created"].get_int64()),
nBanUntil(json["banned_until"].get_int64())
{
}
@ -17,7 +21,7 @@ CBanEntry::CBanEntry(const UniValue& json)
UniValue CBanEntry::ToJson() const
{
UniValue json(UniValue::VOBJ);
json.pushKV("version", nVersion);
json.pushKV(BANMAN_JSON_VERSION_KEY, nVersion);
json.pushKV("ban_created", nCreateTime);
json.pushKV("banned_until", nBanUntil);
return json;
@ -54,11 +58,16 @@ UniValue BanMapToJson(const banmap_t& bans)
void BanMapFromJson(const UniValue& bans_json, banmap_t& bans)
{
for (const auto& ban_entry_json : bans_json.getValues()) {
const int version{ban_entry_json[BANMAN_JSON_VERSION_KEY].get_int()};
if (version != CBanEntry::CURRENT_VERSION) {
LogPrintf("Dropping entry with unknown version (%s) from ban list\n", version);
continue;
}
CSubNet subnet;
const auto& subnet_str = ban_entry_json[BANMAN_JSON_ADDR_KEY].get_str();
if (!LookupSubNet(subnet_str, subnet)) {
throw std::runtime_error(
strprintf("Cannot parse banned address or subnet: %s", subnet_str));
LogPrintf("Dropping entry with unparseable address or subnet (%s) from ban list\n", subnet_str);
continue;
}
bans.insert_or_assign(subnet, CBanEntry{ban_entry_json});
}

43
src/test/banman_tests.cpp Normal file
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@ -0,0 +1,43 @@
// Copyright (c) 2021 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <banman.h>
#include <chainparams.h>
#include <netbase.h>
#include <streams.h>
#include <test/util/logging.h>
#include <test/util/setup_common.h>
#include <util/readwritefile.h>
#include <boost/test/unit_test.hpp>
BOOST_FIXTURE_TEST_SUITE(banman_tests, BasicTestingSetup)
BOOST_AUTO_TEST_CASE(file)
{
SetMockTime(777s);
const fs::path banlist_path{m_args.GetDataDirBase() / "banlist_test"};
{
const std::string entries_write{
"{ \"banned_nets\": ["
" { \"version\": 1, \"ban_created\": 0, \"banned_until\": 778, \"address\": \"aaaaaaaaa\" },"
" { \"version\": 2, \"ban_created\": 0, \"banned_until\": 778, \"address\": \"bbbbbbbbb\" },"
" { \"version\": 1, \"ban_created\": 0, \"banned_until\": 778, \"address\": \"1.0.0.0/8\" }"
"] }",
};
assert(WriteBinaryFile(banlist_path + ".json", entries_write));
{
// The invalid entries will be dropped, but the valid one remains
ASSERT_DEBUG_LOG("Dropping entry with unparseable address or subnet (aaaaaaaaa) from ban list");
ASSERT_DEBUG_LOG("Dropping entry with unknown version (2) from ban list");
BanMan banman{banlist_path, /*client_interface=*/nullptr, /*default_ban_time=*/0};
banmap_t entries_read;
banman.GetBanned(entries_read);
assert(entries_read.size() == 1);
}
}
}
BOOST_AUTO_TEST_SUITE_END()