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Merge bitcoin/bitcoin#22791: init: Fix asmap/addrman initialization order bug

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724c497562 [fuzz] Add ConsumeAsmap() function (John Newbery)
5840476714 [addrman] Make m_asmap private (John Newbery)
f9002cb5db [net] Rename the copyStats arg from m_asmap to asmap (John Newbery)
f572f2b204 [addrman] Set m_asmap in CAddrMan initializer list (John Newbery)
593247872d [net] Remove CConnMan::SetAsmap() (John Newbery)
50fd77045e [init] Read/decode asmap before constructing addrman (John Newbery)

Pull request description:

  Commit 181a1207 introduced an initialization order bug: CAddrMan's m_asmap must be set before deserializing peers.dat.

  The first commit restores the correct initialization order. The remaining commits make `CAddrMan::m_asmap` usage safer:

  - don't reach into `CAddrMan`'s internal data from `CConnMan`
  - set `m_asmap` in the initializer list and make it const
  - make `m_asmap` private, and access it (as a reference to const) from a getter.

  This ensures that peers.dat deserialization must happen after setting m_asmap, since m_asmap is set during CAddrMan construction.

ACKs for top commit:
  mzumsande:
    Tested ACK 724c497562
  amitiuttarwar:
    code review but utACK 724c497562
  naumenkogs:
    utACK 724c497562
  vasild:
    ACK 724c497562
  MarcoFalke:
    review ACK 724c497562 👫

Tree-SHA512: 684a4cf9e3d4496c9997fb2bc4ec874809987055c157ec3fad1d2143b8223df52b5a0af787d028930b27388c8efeba0aeb2446cb35c337a5552ae76112ade726
This commit is contained in:
MarcoFalke
2021-09-06 12:41:31 +02:00
parent 2c6707be8b 724c497562
commit a8fdfea77b
13 changed files with 92 additions and 92 deletions
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14
src/net.cpp
View File

@@ -552,14 +552,14 @@ Network CNode::ConnectedThroughNetwork() const
#undef X
#define X(name) stats.name = name
void CNode::copyStats(CNodeStats &stats, const std::vector<bool> &m_asmap)
void CNode::CopyStats(CNodeStats& stats, const std::vector<bool>& asmap)
{
stats.nodeid = this->GetId();
X(nServices);
X(addr);
X(addrBind);
stats.m_network = ConnectedThroughNetwork();
stats.m_mapped_as = addr.GetMappedAS(m_asmap);
stats.m_mapped_as = addr.GetMappedAS(asmap);
if (m_tx_relay != nullptr) {
LOCK(m_tx_relay->cs_filter);
stats.fRelayTxes = m_tx_relay->fRelayTxes;
@@ -1921,7 +1921,7 @@ void CConnman::ThreadOpenConnections(const std::vector<std::string> connect)
case ConnectionType::BLOCK_RELAY:
case ConnectionType::ADDR_FETCH:
case ConnectionType::FEELER:
setConnected.insert(pnode->addr.GetGroup(addrman.m_asmap));
setConnected.insert(pnode->addr.GetGroup(addrman.GetAsmap()));
} // no default case, so the compiler can warn about missing cases
}
}
@@ -1995,7 +1995,7 @@ void CConnman::ThreadOpenConnections(const std::vector<std::string> connect)
m_anchors.pop_back();
if (!addr.IsValid() || IsLocal(addr) || !IsReachable(addr) ||
!HasAllDesirableServiceFlags(addr.nServices) ||
setConnected.count(addr.GetGroup(addrman.m_asmap))) continue;
setConnected.count(addr.GetGroup(addrman.GetAsmap()))) continue;
addrConnect = addr;
LogPrint(BCLog::NET, "Trying to make an anchor connection to %s\n", addrConnect.ToString());
break;
@@ -2035,7 +2035,7 @@ void CConnman::ThreadOpenConnections(const std::vector<std::string> connect)
}
// Require outbound connections, other than feelers, to be to distinct network groups
if (!fFeeler && setConnected.count(addr.GetGroup(addrman.m_asmap))) {
if (!fFeeler && setConnected.count(addr.GetGroup(addrman.GetAsmap()))) {
break;
}
@@ -2804,7 +2804,7 @@ void CConnman::GetNodeStats(std::vector<CNodeStats>& vstats) const
vstats.reserve(vNodes.size());
for (CNode* pnode : vNodes) {
vstats.emplace_back();
pnode->copyStats(vstats.back(), addrman.m_asmap);
pnode->CopyStats(vstats.back(), addrman.GetAsmap());
}
}
@@ -3067,7 +3067,7 @@ CSipHasher CConnman::GetDeterministicRandomizer(uint64_t id) const
uint64_t CConnman::CalculateKeyedNetGroup(const CAddress& ad) const
{
std::vector<unsigned char> vchNetGroup(ad.GetGroup(addrman.m_asmap));
std::vector<unsigned char> vchNetGroup(ad.GetGroup(addrman.GetAsmap()));
return GetDeterministicRandomizer(RANDOMIZER_ID_NETGROUP).Write(vchNetGroup.data(), vchNetGroup.size()).Finalize();
}