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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2013, 2019, 2021 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2013 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012 Robby <robby@chatbelgie.be>
* Copyright (C) 2010 Craig Edwards <brain@inspircd.org>
* Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
*
* 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/>.
*/
#pragma once
class CoreExport UIDGenerator
{
private:
/** Holds the current UID. Used to generate the next one.
*/
std::string current_uid;
/** Increments the current UID by one.
*/
void IncrementUID(unsigned int pos);
public:
/**
* This is the maximum length of a UUID (unique user identifier).
* It allows up to 12,960 servers and 2,176,782,336 users per server.
*/
static const unsigned int UUID_LENGTH = 9;
/** Initializes this UID generator with the given SID
* @param sid SID that conforms to InspIRCd::IsSID()
*/
void init(const std::string& sid);
/** Returns the next available UID for this server.
*/
std::string GetUID();
/** Generates a pseudorandom SID based on a servername and a description
* Guaranteed to return the same if invoked with the same parameters
* @param servername The server name to use as seed
* @param serverdesc The server description to use as seed
* @return A valid SID
*/
static std::string GenerateSID(const std::string& servername, const std::string& serverdesc);
};
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