13 map<uint256, CAlert> mapAlerts;
14 CCriticalSection cs_mapAlerts;
16 static const char* pszMainKey = "043fa441fd4203d03f5df2b75ea14e36f20d39f43e7a61aa7552ab9bcd7ecb0e77a3be4585b13fcdaa22ef6e51f1ff6f2929bec2494385b086fb86610e33193195";
18 // TestNet alerts pubKey
19 static const char* pszTestKey = "0471dc165db490094d35cde15b1f5d755fa6ad6f2b5ed0f340e3f17f57389c3c2af113a8cbcc885bde73305a553b5640c83021128008ddf882e856336269080496";
21 // TestNet alerts private key
22 // "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"
24 void CUnsignedAlert::SetNull()
42 std::string CUnsignedAlert::ToString() const
44 std::string strSetCancel;
45 for (int n : setCancel)
46 strSetCancel += strprintf("%d ", n);
47 std::string strSetSubVer;
48 for (const std::string& str : setSubVer)
49 strSetSubVer += "\"" + str + "\" ";
53 " nRelayUntil = %" PRId64 "\n"
54 " nExpiration = %" PRId64 "\n"
62 " strComment = \"%s\"\n"
63 " strStatusBar = \"%s\"\n"
76 strStatusBar.c_str());
79 void CAlert::SetNull()
81 CUnsignedAlert::SetNull();
86 bool CAlert::IsNull() const
88 return (nExpiration == 0);
91 uint256 CAlert::GetHash() const
93 return Hash(this->vchMsg.begin(), this->vchMsg.end());
96 bool CAlert::IsInEffect() const
98 return (GetAdjustedTime() < nExpiration);
101 bool CAlert::Cancels(const CAlert& alert) const
104 return false; // this was a no-op before 31403
105 return (alert.nID <= nCancel || setCancel.count(alert.nID));
108 bool CAlert::AppliesTo(int nVersion, const std::string& strSubVerIn) const
110 // TODO: rework for client-version-embedded-in-strSubVer ?
111 return (IsInEffect() &&
112 nMinVer <= nVersion && nVersion <= nMaxVer &&
113 (setSubVer.empty() || setSubVer.count(strSubVerIn)));
116 bool CAlert::AppliesToMe() const
118 return AppliesTo(PROTOCOL_VERSION, FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, std::vector<std::string>()));
121 bool CAlert::RelayTo(CNode* pnode) const
125 // don't relay to nodes which haven't sent their version message
126 if (pnode->nVersion == 0)
128 // returns true if wasn't already contained in the set
129 if (pnode->setKnown.insert(GetHash()).second)
131 if (AppliesTo(pnode->nVersion, pnode->strSubVer) ||
133 GetAdjustedTime() < nRelayUntil)
135 pnode->PushMessage("alert", *this);
142 bool CAlert::CheckSignature() const
145 key.Set(ParseHex(fTestNet ? pszTestKey : pszMainKey));
146 if (!key.Verify(Hash(vchMsg.begin(), vchMsg.end()), vchSig))
147 return error("CAlert::CheckSignature() : verify signature failed");
149 // Now unserialize the data
150 CDataStream sMsg(vchMsg, SER_NETWORK, PROTOCOL_VERSION);
151 sMsg >> *(CUnsignedAlert*)this;
155 CAlert CAlert::getAlertByHash(const uint256 &hash)
160 auto mi = mapAlerts.find(hash);
161 if(mi != mapAlerts.end())
167 bool CAlert::ProcessAlert()
169 if (!CheckSignature())
174 // alert.nID=max is reserved for if the alert key is
175 // compromised. It must have a pre-defined message,
176 // must never expire, must apply to all versions,
177 // and must cancel all previous
178 // alerts or it will be ignored (so an attacker can't
179 // send an "everything is OK, don't panic" version that
180 // cannot be overridden):
181 int maxInt = std::numeric_limits<int>::max();
185 nExpiration == maxInt &&
186 nCancel == (maxInt-1) &&
190 nPriority == maxInt &&
191 strStatusBar == "URGENT: Alert key compromised, upgrade required"
198 // Cancel previous alerts
199 for (auto mi = mapAlerts.begin(); mi != mapAlerts.end();)
201 const CAlert& alert = (*mi).second;
204 printf("cancelling alert %d\n", alert.nID);
205 uiInterface.NotifyAlertChanged((*mi).first, CT_DELETED);
206 mapAlerts.erase(mi++);
208 else if (!alert.IsInEffect())
210 printf("expiring alert %d\n", alert.nID);
211 uiInterface.NotifyAlertChanged((*mi).first, CT_DELETED);
212 mapAlerts.erase(mi++);
218 // Check if this alert has been cancelled
219 for (auto& item : mapAlerts)
221 const CAlert& alert = item.second;
222 if (alert.Cancels(*this))
224 printf("alert already cancelled by %d\n", alert.nID);
230 mapAlerts.insert(make_pair(GetHash(), *this));
231 // Notify UI if it applies to me
233 uiInterface.NotifyAlertChanged(GetHash(), CT_NEW);
236 printf("accepted alert %d, AppliesToMe()=%d\n", nID, AppliesToMe());