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Ignore incorrectly-serialized banlist.dat entries

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This commit is contained in:
Pieter Wuille 2020-10-12 15:35:08 -07:00
parent 883cea7dea
commit 886be97af5
3 changed files with 16 additions and 1 deletions
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2
src/banman.cpp
View file

@ -184,7 +184,7 @@ void BanMan::SweepBanned()
while (it != m_banned.end()) {
CSubNet sub_net = (*it).first;
CBanEntry ban_entry = (*it).second;
if (now > ban_entry.nBanUntil) {
if (!sub_net.IsValid() || now > ban_entry.nBanUntil) {
m_banned.erase(it++);
m_is_dirty = true;
notify_ui = true;

11
src/netaddress.cpp
View file

@ -1109,6 +1109,17 @@ bool CSubNet::IsValid() const
return valid;
}
bool CSubNet::SanityCheck() const
{
if (!(network.IsIPv4() || network.IsIPv6())) return false;
for (size_t x = 0; x < network.m_addr.size(); ++x) {
if (network.m_addr[x] & ~netmask[x]) return false;
}
return true;
}
bool operator==(const CSubNet& a, const CSubNet& b)
{
return a.valid == b.valid && a.network == b.network && !memcmp(a.netmask, b.netmask, 16);

4
src/netaddress.h
View file

@ -451,6 +451,8 @@ class CSubNet
/// Is this value valid? (only used to signal parse errors)
bool valid;
bool SanityCheck() const;
public:
CSubNet();
CSubNet(const CNetAddr& addr, uint8_t mask);
@ -482,6 +484,8 @@ class CSubNet
READWRITE(obj.netmask);
}
READWRITE(obj.valid);
// Mark invalid if the result doesn't pass sanity checking.
SER_READ(obj, if (obj.valid) obj.valid = obj.SanityCheck());
}
};