DragonX/hush3
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 1 Wiki Activity

Stuck in the grind

Browse Source
This commit is contained in:
Duke Leto
2020-12-16 22:10:59 -05:00
parent 7136da99ae
commit 980350b9b4
132 changed files with 529 additions and 853 deletions
Download Patch File Download Diff File Expand all files Collapse all files

130
src/alert.cpp
View File

@@ -3,7 +3,6 @@
// Copyright (c) 2016-2020 The Hush developers
// Distributed under the GPLv3 software license, see the accompanying
// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
/******************************************************************************
* Copyright © 2014-2019 The SuperNET Developers. *
* *
@@ -18,20 +17,16 @@
* Removal or modification of this copyright notice is prohibited. *
* *
******************************************************************************/
#include "alert.h"
#include "clientversion.h"
#include "net.h"
#include "pubkey.h"
#include "timedata.h"
#include "ui_interface.h"
#include "util.h"
#include <stdint.h>
#include <algorithm>
#include <map>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <boost/foreach.hpp>
@@ -118,7 +113,7 @@ uint256 CAlert::GetHash() const
bool CAlert::IsInEffect() const
{
return (GetTime() < nExpiration);
return false;
}
bool CAlert::Cancels(const CAlert& alert) const
@@ -138,146 +133,31 @@ bool CAlert::AppliesTo(int nVersion, const std::string& strSubVerIn) const
bool CAlert::AppliesToMe() const
{
return AppliesTo(PROTOCOL_VERSION, FormatSubVersion(GetArg("-clientname","MagicBean"), CLIENT_VERSION, std::vector<std::string>()));
return false;
}
bool CAlert::RelayTo(CNode* pnode) const
{
if (!IsInEffect())
return false;
// don't relay to nodes which haven't sent their version message
if (pnode->nVersion == 0)
return false;
// returns true if wasn't already contained in the set
if (pnode->setKnown.insert(GetHash()).second)
{
if (AppliesTo(pnode->nVersion, pnode->strSubVer) ||
AppliesToMe() ||
GetTime() < nRelayUntil)
{
pnode->PushMessage("alert", *this);
return true;
}
}
return false;
}
bool CAlert::CheckSignature(const std::vector<unsigned char>& alertKey) const
{
CPubKey key(alertKey);
if (!key.Verify(Hash(vchMsg.begin(), vchMsg.end()), vchSig))
return error("CAlert::CheckSignature(): verify signature failed");
// Now unserialize the data
CDataStream sMsg(vchMsg, SER_NETWORK, PROTOCOL_VERSION);
sMsg >> *(CUnsignedAlert*)this;
return true;
return false;
}
CAlert CAlert::getAlertByHash(const uint256 &hash)
{
CAlert retval;
{
LOCK(cs_mapAlerts);
map<uint256, CAlert>::iterator mi = mapAlerts.find(hash);
if(mi != mapAlerts.end())
retval = mi->second;
}
return retval;
}
bool CAlert::ProcessAlert(const std::vector<unsigned char>& alertKey, bool fThread)
{
if (!CheckSignature(alertKey))
return false;
if (!IsInEffect())
return false;
// alert.nID=max is reserved for if the alert key is
// compromised. It must have a pre-defined message,
// must never expire, must apply to all versions,
// and must cancel all previous
// alerts or it will be ignored (so an attacker can't
// send an "everything is OK, don't panic" version that
// cannot be overridden):
int maxInt = std::numeric_limits<int>::max();
if (nID == maxInt)
{
if (!(
nExpiration == maxInt &&
nCancel == (maxInt-1) &&
nMinVer == 0 &&
nMaxVer == maxInt &&
setSubVer.empty() &&
nPriority == maxInt &&
strStatusBar == "URGENT: Alert key compromised, upgrade required"
))
return false;
}
{
LOCK(cs_mapAlerts);
// Cancel previous alerts
for (map<uint256, CAlert>::iterator mi = mapAlerts.begin(); mi != mapAlerts.end();)
{
const CAlert& alert = (*mi).second;
if (Cancels(alert))
{
LogPrint("alert", "cancelling alert %d\n", alert.nID);
uiInterface.NotifyAlertChanged((*mi).first, CT_DELETED);
mapAlerts.erase(mi++);
}
else if (!alert.IsInEffect())
{
LogPrint("alert", "expiring alert %d\n", alert.nID);
uiInterface.NotifyAlertChanged((*mi).first, CT_DELETED);
mapAlerts.erase(mi++);
}
else
mi++;
}
// Check if this alert has been cancelled
BOOST_FOREACH(PAIRTYPE(const uint256, CAlert)& item, mapAlerts)
{
const CAlert& alert = item.second;
if (alert.Cancels(*this))
{
LogPrint("alert", "alert already cancelled by %d\n", alert.nID);
return false;
}
}
// Add to mapAlerts
mapAlerts.insert(make_pair(GetHash(), *this));
// Notify UI and -alertnotify if it applies to me
if(AppliesToMe())
{
uiInterface.NotifyAlertChanged(GetHash(), CT_NEW);
Notify(strStatusBar, fThread);
}
}
LogPrint("alert", "accepted alert %d, AppliesToMe()=%d\n", nID, AppliesToMe());
return true;
}
void
CAlert::Notify(const std::string& strMessage, bool fThread)
void CAlert::Notify(const std::string& strMessage, bool fThread)
{
std::string strCmd = GetArg("-alertnotify", "");
if (strCmd.empty()) return;
// Alert text should be plain ascii coming from a trusted source, but to
// be safe we first strip anything not in safeChars, then add single quotes around
// the whole string before passing it to the shell:
std::string singleQuote("'");
std::string safeStatus = SanitizeString(strMessage);
safeStatus = singleQuote+safeStatus+singleQuote;
boost::replace_all(strCmd, "%s", safeStatus);
if (fThread)
boost::thread t(runCommand, strCmd); // thread runs free
else
runCommand(strCmd);
return;
}