//
// Sign a CAlert and serialize it
//
bool SignAndSave(CAlert &alert)
{
// Sign
if(!alert.Sign())
{
printf("SignAndSave() : could not sign alert:\n%s", alert.ToString().c_str());
return false;
}
std::string strFilePath = "src/test/data/alertTests.raw";
// open output file and associate it with CAutoFile
FILE *file = fopen(strFilePath.c_str(), "ab+");
CAutoFile fileout(file, SER_DISK, CLIENT_VERSION);
if (fileout.IsNull())
return error("%s: Failed to open file %s", __func__, strFilePath);
try {
fileout << alert;
}
catch (std::exception &e) {
return error("%s: Serialize or I/O error - %s", __func__, e.what());
}
fileout.fclose();
return true;
}
void ThreadSendAlert(CConnman& connman)
{
if (!mapArgs.count("-sendalert") && !mapArgs.count("-printalert"))
return;
// Wait one minute so we get well connected. If we only need to print
// but not to broadcast - do this right away.
if (mapArgs.count("-sendalert"))
MilliSleep(60*1000);
//
// Alerts are relayed around the network until nRelayUntil, flood
// filling to every node.
// After the relay time is past, new nodes are told about alerts
// when they connect to peers, until either nExpiration or
// the alert is cancelled by a newer alert.
// Nodes never save alerts to disk, they are in-memory-only.
//
CAlert alert;
alert.nRelayUntil = GetAdjustedTime() + 15 * 60;
alert.nExpiration = GetAdjustedTime() + 30 * 60 * 60;
alert.nID = 1; // keep track of alert IDs somewhere
alert.nCancel = 0; // cancels previous messages up to this ID number
// These versions are protocol versions
alert.nMinVer = 70000;
alert.nMaxVer = 70103;
//
// 1000 for Misc warnings like out of disk space and clock is wrong
// 2000 for longer invalid proof-of-work chain
// Higher numbers mean higher priority
alert.nPriority = 5000;
alert.strComment = "";
alert.strStatusBar = "URGENT: Upgrade required: see https://www.terracoin.io";
// Set specific client version/versions here. If setSubVer is empty, no filtering on subver is done:
// alert.setSubVer.insert(std::string("/Terracoin Core:0.12.0.58/"));
// Sign
if(!alert.Sign())
{
LogPrintf("ThreadSendAlert() : could not sign alert\n");
return;
}
// Test
CDataStream sBuffer(SER_NETWORK, CLIENT_VERSION);
sBuffer << alert;
CAlert alert2;
sBuffer >> alert2;
if (!alert2.CheckSignature(Params().AlertKey()))
{
printf("ThreadSendAlert() : CheckSignature failed\n");
return;
}
assert(alert2.vchMsg == alert.vchMsg);
assert(alert2.vchSig == alert.vchSig);
alert.SetNull();
printf("\nThreadSendAlert:\n");
printf("hash=%s\n", alert2.GetHash().ToString().c_str());
printf("%s", alert2.ToString().c_str());
printf("vchMsg=%s\n", HexStr(alert2.vchMsg).c_str());
printf("vchSig=%s\n", HexStr(alert2.vchSig).c_str());
// Confirm
if (!mapArgs.count("-sendalert"))
return;
while (connman.GetNodeCount(CConnman::CONNECTIONS_ALL) == 0 && !ShutdownRequested())
MilliSleep(500);
if (ShutdownRequested())
return;
// Send
printf("ThreadSendAlert() : Sending alert\n");
int nSent = 0;
{
connman.ForEachNode([&alert2, &connman, &nSent](CNode* pnode) {
if (alert2.RelayTo(pnode, connman))
{
printf("ThreadSendAlert() : Sent alert to %s\n", pnode->addr.ToString().c_str());
nSent++;
}
});
}
printf("ThreadSendAlert() : Alert sent to %d nodes\n", nSent);
}