11 #include "interface.h"
15 map<uint256, CAlert> mapAlerts;
16 CCriticalSection cs_mapAlerts;
18 static const char* pszMainKey = "043fa441fd4203d03f5df2b75ea14e36f20d39f43e7a61aa7552ab9bcd7ecb0e77a3be4585b13fcdaa22ef6e51f1ff6f2929bec2494385b086fb86610e33193195";
20 // TestNet alerts pubKey
21 static const char* pszTestKey = "0471dc165db490094d35cde15b1f5d755fa6ad6f2b5ed0f340e3f17f57389c3c2af113a8cbcc885bde73305a553b5640c83021128008ddf882e856336269080496";
23 // TestNet alerts private key
24 // "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"
26 void CUnsignedAlert::SetNull()
44 std::string CUnsignedAlert::ToString() const
46 std::string strSetCancel;
47 for (int n : setCancel)
48 strSetCancel += strprintf("%d ", n);
49 std::string strSetSubVer;
50 for (const std::string& str : setSubVer)
51 strSetSubVer += "\"" + str + "\" ";
55 " nRelayUntil = %" PRId64 "\n"
56 " nExpiration = %" PRId64 "\n"
64 " strComment = \"%s\"\n"
65 " strStatusBar = \"%s\"\n"
78 strStatusBar.c_str());
81 void CAlert::SetNull()
83 CUnsignedAlert::SetNull();
88 bool CAlert::IsNull() const
90 return (nExpiration == 0);
93 uint256 CAlert::GetHash() const
95 return Hash(this->vchMsg.begin(), this->vchMsg.end());
98 bool CAlert::IsInEffect() const
100 return (GetAdjustedTime() < nExpiration);
103 bool CAlert::Cancels(const CAlert& alert) const
106 return false; // this was a no-op before 31403
107 return (alert.nID <= nCancel || setCancel.count(alert.nID));
110 bool CAlert::AppliesTo(int nVersion, const std::string& strSubVerIn) const
112 // TODO: rework for client-version-embedded-in-strSubVer ?
113 return (IsInEffect() &&
114 nMinVer <= nVersion && nVersion <= nMaxVer &&
115 (setSubVer.empty() || setSubVer.count(strSubVerIn)));
118 bool CAlert::AppliesToMe() const
120 return AppliesTo(PROTOCOL_VERSION, FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, std::vector<std::string>()));
123 bool CAlert::RelayTo(CNode* pnode) const
127 // don't relay to nodes which haven't sent their version message
128 if (pnode->nVersion == 0)
130 // returns true if wasn't already contained in the set
131 if (pnode->setKnown.insert(GetHash()).second)
133 if (AppliesTo(pnode->nVersion, pnode->strSubVer) ||
135 GetAdjustedTime() < nRelayUntil)
137 pnode->PushMessage("alert", *this);
144 bool CAlert::CheckSignature() const
147 key.Set(ParseHex(fTestNet ? pszTestKey : pszMainKey));
148 if (!key.Verify(Hash(vchMsg.begin(), vchMsg.end()), vchSig))
149 return error("CAlert::CheckSignature() : verify signature failed");
151 // Now unserialize the data
152 CDataStream sMsg(vchMsg, SER_NETWORK, PROTOCOL_VERSION);
153 sMsg >> *(CUnsignedAlert*)this;
157 CAlert CAlert::getAlertByHash(const uint256 &hash)
162 auto mi = mapAlerts.find(hash);
163 if(mi != mapAlerts.end())
169 bool CAlert::ProcessAlert()
171 if (!CheckSignature())
176 // alert.nID=max is reserved for if the alert key is
177 // compromised. It must have a pre-defined message,
178 // must never expire, must apply to all versions,
179 // and must cancel all previous
180 // alerts or it will be ignored (so an attacker can't
181 // send an "everything is OK, don't panic" version that
182 // cannot be overridden):
183 int maxInt = std::numeric_limits<int>::max();
187 nExpiration == maxInt &&
188 nCancel == (maxInt-1) &&
192 nPriority == maxInt &&
193 strStatusBar == "URGENT: Alert key compromised, upgrade required"
200 // Cancel previous alerts
201 for (auto mi = mapAlerts.begin(); mi != mapAlerts.end();)
203 const CAlert& alert = (*mi).second;
206 printf("cancelling alert %d\n", alert.nID);
207 uiInterface.NotifyAlertChanged((*mi).first, CT_DELETED);
208 mapAlerts.erase(mi++);
210 else if (!alert.IsInEffect())
212 printf("expiring alert %d\n", alert.nID);
213 uiInterface.NotifyAlertChanged((*mi).first, CT_DELETED);
214 mapAlerts.erase(mi++);
220 // Check if this alert has been cancelled
221 for (auto& item : mapAlerts)
223 const CAlert& alert = item.second;
224 if (alert.Cancels(*this))
226 printf("alert already cancelled by %d\n", alert.nID);
232 mapAlerts.insert(make_pair(GetHash(), *this));
233 // Notify UI if it applies to me
235 uiInterface.NotifyAlertChanged(GetHash(), CT_NEW);
238 printf("accepted alert %d, AppliesToMe()=%d\n", nID, AppliesToMe());