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In unexpected version signalling warnings, list the specific bits involved

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This commit is contained in:
Luke Dashjr 2024-01-05 21:23:38 +00:00
parent 105c907fa4
commit aa6e5154db
2 changed files with 23 additions and 8 deletions
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24
src/validation.cpp
View File

@ -2754,7 +2754,8 @@ void Chainstate::UpdateTip(const CBlockIndex* pindexNew)
int unexpected_bit_count[VERSIONBITS_NUM_BITS], nonversionbit_count = 0;
for (size_t i = 0; i < VERSIONBITS_NUM_BITS; ++i) unexpected_bit_count[i] = 0;
static constexpr int WARNING_THRESHOLD = 100/2;
bool warning_threshold_hit = false;
std::set<uint8_t> warning_threshold_hit_bits;
int32_t warning_threshold_hit_int{-1};
for (int i = 0; i < 100 && pindex != nullptr; i++)
{
int32_t nExpectedVersion = m_chainman.m_versionbitscache.ComputeBlockVersion(pindex->pprev, params.GetConsensus());
@ -2765,21 +2766,34 @@ void Chainstate::UpdateTip(const CBlockIndex* pindexNew)
const int32_t mask = 1 << bit;
if ((pindex->nVersion & mask) && !(nExpectedVersion & mask)) {
if (++unexpected_bit_count[bit] > WARNING_THRESHOLD) {
warning_threshold_hit = true;
warning_threshold_hit_bits.insert(bit);
}
}
}
} else {
// Non-versionbits upgrade
if (++nonversionbit_count > WARNING_THRESHOLD) {
warning_threshold_hit = true;
if (warning_threshold_hit_int == -1) {
warning_threshold_hit_int = pindex->nVersion;
} else if (warning_threshold_hit_int != pindex->nVersion) {
warning_threshold_hit_int = -2;
}
}
}
}
pindex = pindex->pprev;
}
if (warning_threshold_hit) {
const auto warning = _("Warning: Unrecognised block version being mined! Unknown rules may or may not be in effect");
if (!warning_threshold_hit_bits.empty()) {
const auto warning = strprintf(_("Warning: Miners are attempting to activate unknown new rules (bit %s)! You may or may not need to act to remain secure"), Join(warning_threshold_hit_bits, ", ", [](const uint8_t bit){ return ::ToString(int(bit)); }));
AppendWarning(warning_messages, warning);
}
if (warning_threshold_hit_int != -1) {
bilingual_str warning;
if (warning_threshold_hit_int == -2) {
warning = _("Warning: Unrecognised block versions are being mined! Unknown rules may or may not be in effect");
} else {
warning = strprintf(_("Warning: Unrecognised block version (0x%08x) is being mined! Unknown rules may or may not be in effect"), warning_threshold_hit_int);
}
AppendWarning(warning_messages, warning);
}
}

7
test/functional/feature_versionbits_warning.py
View File

@ -23,7 +23,8 @@ VB_UNKNOWN_VERSION = VB_TOP_BITS | (1 << VB_UNKNOWN_BIT)
UNKNOWN_VERSION_SCHEMA = 0x60000000
UNKNOWN_VERSION_SCHEMA_THRESHOLD = 51
WARN_UNKNOWN_RULES_MINED = "Warning: Unrecognised block version being mined! Unknown rules may or may not be in effect"
WARN_UNKNOWN_RULES_MINED = "Warning: Unrecognised block version (0x%08x) is being mined! Unknown rules may or may not be in effect" % (UNKNOWN_VERSION_SCHEMA,)
WARN_UNKNOWN_BIT_MINED = f"Warning: Miners are attempting to activate unknown new rules (bit {VB_UNKNOWN_BIT})"
WARN_UNKNOWN_RULES_ACTIVE = f"Unknown new rules activated (versionbit {VB_UNKNOWN_BIT})"
VB_PATTERN = re.compile("Unknown new rules activated.*versionbit")
@ -103,8 +104,8 @@ class VersionBitsWarningTest(BitcoinTestFramework):
self.generatetoaddress(node, VB_PERIOD - VB_THRESHOLD, node_deterministic_address)
# Check that get*info() shows the 51/100 unknown block version error.
assert(WARN_UNKNOWN_RULES_MINED in node.getmininginfo()["warnings"])
assert(WARN_UNKNOWN_RULES_MINED in node.getnetworkinfo()["warnings"])
assert(WARN_UNKNOWN_BIT_MINED in node.getmininginfo()["warnings"])
assert(WARN_UNKNOWN_BIT_MINED in node.getnetworkinfo()["warnings"])
self.log.info("Check that there is a warning if previous VB_BLOCKS have >=VB_THRESHOLD blocks with unknown versionbits version.")
# Mine a period worth of expected blocks so the generic block-version warning