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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2006 Craig Edwards <craigedwards@brainbox.cc>
*
* 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
#include "modules.h"
namespace WhoWas
{
/** One entry for a nick. There may be multiple entries for a nick.
*/
struct Entry
{
/** Real host
*/
const std::string host;
/** Displayed host
*/
const std::string dhost;
/** Ident
*/
const std::string ident;
/** Server name
*/
const std::string server;
/** Full name (GECOS)
*/
const std::string gecos;
/** Signon time
*/
const time_t signon;
/** Initialize this Entry with a user
*/
Entry(User* user);
};
/** Everything known about one nick
*/
struct Nick : public insp::intrusive_list_node<Nick>
{
/** A group of users related by nickname
*/
typedef std::deque<Entry*> List;
/** Container where each element has information about one occurrence of this nick
*/
List entries;
/** Time this nick was added to the database
*/
const time_t addtime;
/** Nickname whose information is stored in this class
*/
const std::string nick;
/** Constructor to initialize fields
*/
Nick(const std::string& nickname);
/** Destructor, deallocates all elements in the entries container
*/
~Nick();
};
class Manager
{
public:
struct Stats
{
/** Number of currently existing WhoWas::Entry objects
*/
size_t entrycount;
};
/** Add a user to the whowas database. Called when a user quits.
* @param user The user to add to the database
*/
void Add(User* user);
/** Retrieves statistics about the whowas database
* @return Whowas statistics as a WhoWas::Manager::Stats struct
*/
Stats GetStats() const;
/** Expires old entries
*/
void Maintain();
/** Updates the current configuration which may result in the database being pruned if the
* new values are lower than the current ones.
* @param NewGroupSize Maximum number of nicks allowed in the database. In case there are this many nicks
* in the database and one more is added, the oldest one is removed (FIFO).
* @param NewMaxGroups Maximum number of entries per nick
* @param NewMaxKeep Seconds how long each nick should be kept
*/
void UpdateConfig(unsigned int NewGroupSize, unsigned int NewMaxGroups, unsigned int NewMaxKeep);
/** Retrieves all data known about a given nick
* @param nick Nickname to find, case insensitive (IRC casemapping)
* @return A pointer to a WhoWas::Nick if the nick was found, NULL otherwise
*/
const Nick* FindNick(const std::string& nick) const;
/** Returns true if WHOWAS is enabled according to the current configuration
* @return True if WHOWAS is enabled according to the configuration, false if WHOWAS is disabled
*/
bool IsEnabled() const;
/** Constructor
*/
Manager();
/** Destructor
*/
~Manager();
private:
/** Order in which the users were added into the map, used to remove oldest nick
*/
typedef insp::intrusive_list_tail<Nick> FIFO;
/** Sets of users in the whowas system
*/
typedef TR1NS::unordered_map<std::string, WhoWas::Nick*, irc::insensitive, irc::StrHashComp> whowas_users;
/** Primary container, links nicknames tracked by WHOWAS to a list of records
*/
whowas_users whowas;
/** List of nicknames in the order they were inserted into the map
*/
FIFO whowas_fifo;
/** Max number of WhoWas entries per user.
*/
unsigned int GroupSize;
/** Max number of cumulative user-entries in WhoWas.
* When max reached and added to, push out oldest entry FIFO style.
*/
unsigned int MaxGroups;
/** Max seconds a user is kept in WhoWas before being pruned.
*/
unsigned int MaxKeep;
/** Shrink all data structures to honor the current settings
*/
void Prune();
/** Remove a nick (and all entries belonging to it) from the database
* @param it Iterator to the nick to purge
*/
void PurgeNick(whowas_users::iterator it);
/** Remove a nick (and all entries belonging to it) from the database
* @param nick Nick to purge
*/
void PurgeNick(WhoWas::Nick* nick);
};
}
/** Handle /WHOWAS. These command handlers can be reloaded by the core,
* and handle basic RFC1459 commands. Commands within modules work
* the same way, however, they can be fully unloaded, where these
* may not.
*/
class CommandWhowas : public Command
{
public:
/** Manager handling all whowas database related tasks
*/
WhoWas::Manager manager;
CommandWhowas(Module* parent);
/** Handle command.
* @param parameters The parameters to the comamnd
* @param user The user issuing the command
* @return A value from CmdResult to indicate command success or failure.
*/
CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE;
};
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