// ppcoin: send alert.
// There is a known deadlock situation with ThreadMessageHandler
// ThreadMessageHandler: holds cs_vSend and acquiring cs_main in SendMessages()
// ThreadRPCServer: holds cs_main and acquiring cs_vSend in alert.RelayTo()/PushMessage()/BeginMessage()
UniValue sendalert(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() < 6)
throw runtime_error(
"sendalert <message> <privatekey> <minver> <maxver> <priority> <id> [cancelupto]\n"
"\n"
"<message> ----> is the alert text message\n"
"<privatekey> -> is hex string of alert master private key\n"
"<minver> -----> is the minimum applicable internal client version\n"
"<maxver> -----> is the maximum applicable internal client version\n"
"<priority> ---> is integer priority number\n"
"<id> ---------> is the alert id\n"
"[cancelupto] -> cancels all alert id's up to this number\n"
"\n"
"Returns true or false\n");
CAlert alert;
CKey key;
alert.strStatusBar = params[0].get_str();
alert.nMinVer = params[2].get_int();
alert.nMaxVer = params[3].get_int();
alert.nPriority = params[4].get_int();
alert.nID = params[5].get_int();
if (params.size() > 6)
alert.nCancel = params[6].get_int();
alert.nVersion = PROTOCOL_VERSION;
alert.nRelayUntil = GetAdjustedTime() + 365*24*60*60;
alert.nExpiration = GetAdjustedTime() + 365*24*60*60;
CDataStream sMsg(SER_NETWORK, PROTOCOL_VERSION);
sMsg << (CUnsignedAlert)alert;
alert.vchMsg = vector<unsigned char>(sMsg.begin(), sMsg.end());
vector<unsigned char> vchPrivKey = ParseHex(params[1].get_str());
key.SetPrivKey(CPrivKey(vchPrivKey.begin(), vchPrivKey.end())); // if key is not correct openssl may crash
if (!key.Sign(Hash(alert.vchMsg.begin(), alert.vchMsg.end()), alert.vchSig))
throw runtime_error(
"Unable to sign alert, check private key?\n");
if(!alert.ProcessAlert())
throw runtime_error(
"Failed to process alert.\n");
// Relay alert
{
LOCK(cs_vNodes);
for (auto const& pnode : vNodes)
alert.RelayTo(pnode);
}
UniValue result(UniValue::VOBJ);
result.pushKV("strStatusBar", alert.strStatusBar);
result.pushKV("nVersion", alert.nVersion);
result.pushKV("nMinVer", alert.nMinVer);
result.pushKV("nMaxVer", alert.nMaxVer);
result.pushKV("nPriority", alert.nPriority);
result.pushKV("nID", alert.nID);
if (alert.nCancel > 0)
result.pushKV("nCancel", alert.nCancel);
return result;
}
UniValue sendalert2(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 7)
throw runtime_error(
// 0 1 2 3 4 5 6
"sendalert2 <privatekey> <id> <subverlist> <cancellist> <expire> <priority> <message>\n"
"\n"
"<privatekey> -> is hex string of alert master private key\n"
"<id> ---------> is the unique alert number\n"
"<subverlist> -> comma separated list of versions warning applies to\n"
"<cancellist> -> comma separated ids of alerts to cancel\n"
"<expire> -----> alert expiration in days\n"
"<priority> ---> integer, >1000->visible\n"
"<message> ---->is the alert text message\n"
"\n"
"Returns summary of what was done.");
CAlert alert;
CKey key;
alert.strStatusBar = params[6].get_str();
alert.nMinVer = PROTOCOL_VERSION;
alert.nMaxVer = PROTOCOL_VERSION;
alert.nPriority = params[5].get_int();
alert.nID = params[1].get_int();
alert.nVersion = PROTOCOL_VERSION;
alert.nRelayUntil = alert.nExpiration = GetAdjustedTime() + 24*60*60*params[4].get_int();
if(params[2].get_str().length())
{
std::vector<std::string> split_subver = split(params[2].get_str(), ",");
alert.setSubVer.insert(split_subver.begin(),split_subver.end());
}
if(params[3].get_str().length())
{
for(std::string &s : split(params[3].get_str(), ","))
{
int aver = RoundFromString(s, 0);
alert.setCancel.insert(aver);
}
}
CDataStream sMsg(SER_NETWORK, PROTOCOL_VERSION);
sMsg << (CUnsignedAlert)alert;
alert.vchMsg = vector<unsigned char>(sMsg.begin(), sMsg.end());
vector<unsigned char> vchPrivKey = ParseHex(params[0].get_str());
key.SetPrivKey(CPrivKey(vchPrivKey.begin(), vchPrivKey.end())); // if key is not correct openssl may crash
if (!key.Sign(Hash(alert.vchMsg.begin(), alert.vchMsg.end()), alert.vchSig))
throw runtime_error(
"Unable to sign alert, check private key?\n");
if(!alert.ProcessAlert())
throw runtime_error(
"Failed to process alert.\n");
// Relay alert
{
LOCK(cs_vNodes);
for (auto const& pnode : vNodes)
alert.RelayTo(pnode);
}
UniValue result(UniValue::VOBJ);
result.pushKV("Content", alert.ToString());
result.pushKV("Success", true);
return result;
}