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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2020-2025 Sadie Powell <sadie@sadiepowell.dev>
* Copyright (C) 2013-2014 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012 Robby <robby@chatbelgie.be>
* Copyright (C) 2012 ChrisTX <xpipe@hotmail.de>
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008 Craig Edwards <brain@inspircd.org>
* Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _WIN32
# include <unistd.h>
#endif
#include "inspircd.h"
void InspIRCd::HandleSignal(sig_atomic_t signal)
{
switch (signal)
{
case SIGTERM:
Exit(EXIT_FAILURE);
#ifndef _WIN32
case SIGHUP:
ServerInstance->SNO.WriteGlobalSno('r', "Rehashing due to SIGHUP");
Rehash();
break;
#endif
default:
ServerInstance->Logs.Debug("SIGNAL", "BUG: InspIRCd::SignalHandler: unknown signal: {}",
signal);
break;
}
}
void InspIRCd::Exit(int status)
{
#ifdef _WIN32
SetServiceStopped(status);
#endif
this->Cleanup();
ServerInstance = nullptr;
delete this;
if (isatty(fileno(stdout)))
{
fmt::println("");
fmt::println("Exiting with code {}.", status);
}
exit(status);
}
void InspIRCd::Rehash(const std::string& uuid)
{
if (!ConfigThread)
{
ConfigThread = new ConfigReaderThread(uuid);
ConfigThread->Start();
}
}
std::string UIDGenerator::GenerateSID(const std::string& servername, const std::string& serverdesc)
{
unsigned int sid = 0;
for (const auto chr : servername)
sid = 5 * sid + chr;
for (const auto chr : serverdesc)
sid = 5 * sid + chr;
std::string sidstr = ConvToStr(sid % 1000);
sidstr.insert(0, 3 - sidstr.length(), '0');
return sidstr;
}
void UIDGenerator::IncrementUID(unsigned int pos)
{
/*
* Okay. The rules for generating a UID go like this...
* -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
* That is, we start at A. When we reach Z, we go to 0. At 9, we go to
* A again, in an iterative fashion.. so..
* AAA9 -> AABA, and so on. -- w00t
*/
// If we hit Z, wrap around to 0.
if (current_uid[pos] == 'Z')
{
current_uid[pos] = '0';
}
else if (current_uid[pos] == '9')
{
/*
* Or, if we hit 9, wrap around to pos = 'A' and (pos - 1)++,
* e.g. A9 -> BA -> BB ..
*/
current_uid[pos] = 'A';
if (pos == 3)
{
// At pos 3, if we hit '9', we've run out of available UIDs, and reset to AAA..AAA.
return;
}
this->IncrementUID(pos - 1);
}
else
{
// Anything else, nobody gives a shit. Just increment.
current_uid[pos]++;
}
}
void UIDGenerator::init(const std::string& sid)
{
/*
* Copy SID into the first three digits, 9's to the rest, null term at the end
* Why 9? Well, we increment before we find, otherwise we have an unnecessary copy, and I want UID to start at AAA..AA
* and not AA..AB. So by initialising to 99999, we force it to rollover to AAAAA on the first IncrementUID call.
* Kind of silly, but I like how it looks.
* -- w
*/
current_uid.resize(UUID_LENGTH, '9');
current_uid[0] = sid[0];
current_uid[1] = sid[1];
current_uid[2] = sid[2];
}
/*
* Retrieve the next valid UUID that is free for this server.
*/
std::string UIDGenerator::GetUID()
{
while (true)
{
// Add one to the last UID
this->IncrementUID(UUID_LENGTH - 1);
if (!ServerInstance->Users.FindUUID(current_uid))
break;
/*
* It's in use. We need to try the loop again.
*/
}
return current_uid;
}
const std::string& Server::GetPublicName() const
{
if (!ServerInstance->Config->HideServer.empty())
return ServerInstance->Config->HideServer;
return GetName();
}
void Server::SendMetadata(const std::string& key, const std::string& data) const
{
// Do nothing for the local server.
}
void Server::SendMetadata(const Extensible* ext, const std::string& key, const std::string& data) const
{
// Do nothing for the local server.
}
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