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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2007 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 "treesocket.h"
/** Each server in the tree is represented by one class of
* type TreeServer. A locally connected TreeServer can
* have a class of type TreeSocket associated with it, for
* remote servers, the TreeSocket entry will be NULL.
* Each server also maintains a pointer to its parent
* (NULL if this server is ours, at the top of the tree)
* and a pointer to its "Route" (see the comments in the
* constructors below), and also a dynamic list of pointers
* to its children which can be iterated recursively
* if required. Creating or deleting objects of type
i* TreeServer automatically maintains the hash_map of
* TreeServer items, deleting and inserting them as they
* are created and destroyed.
*/
class TreeServer : public Server
{
TreeServer* Parent; /* Parent entry */
TreeServer* Route; /* Route entry */
std::vector<TreeServer*> Children; /* List of child objects */
std::string VersionString; /* Version string or empty string */
/** Full version string including patch version and other info
*/
std::string fullversion;
TreeSocket* Socket; /* Socket used to communicate with this server */
time_t NextPing; /* After this time, the server should be PINGed*/
bool LastPingWasGood; /* True if the server responded to the last PING with a PONG */
std::string sid; /* Server ID */
/** This method is used to add this TreeServer to the
* hash maps. It is only called by the constructors.
*/
void AddHashEntry();
public:
typedef std::vector<TreeServer*> ChildServers;
FakeUser* const ServerUser; /* User representing this server */
const time_t age;
bool Warned; /* True if we've warned opers about high latency on this server */
bool bursting; /* whether or not this server is bursting */
unsigned int UserCount; /* How many users are on this server? [note: doesn't care about +i] */
unsigned int OperCount; /* How many opers are on this server? */
/** We use this constructor only to create the 'root' item, Utils->TreeRoot, which
* represents our own server. Therefore, it has no route, no parent, and
* no socket associated with it. Its version string is our own local version.
*/
TreeServer();
/** When we create a new server, we call this constructor to initialize it.
* This constructor initializes the server's Route and Parent, and sets up
* its ping counters so that it will be pinged one minute from now.
*/
TreeServer(const std::string& Name, const std::string& Desc, const std::string& id, TreeServer* Above, TreeSocket* Sock, bool Hide);
int QuitUsers(const std::string &reason);
/** Get route.
* The 'route' is defined as the locally-
* connected server which can be used to reach this server.
*/
TreeServer* GetRoute();
/** Returns true if this server is the tree root (i.e.: us)
*/
bool IsRoot() const { return (this->Parent == NULL); }
/** Returns true if this server is locally connected
*/
bool IsLocal() const { return (this->Route == this); }
/** Get server version string
*/
const std::string& GetVersion();
/** Get the full version string of this server
* @return The full version string of this server, including patch version and other info
*/
const std::string& GetFullVersion() const { return fullversion; }
/** Set time we are next due to ping this server
*/
void SetNextPingTime(time_t t);
/** Get the time we are next due to ping this server
*/
time_t NextPingTime();
/** Last ping time in milliseconds, used to calculate round trip time
*/
unsigned long LastPingMsec;
/** Round trip time of last ping
*/
unsigned long rtt;
/** When we recieved BURST from this server, used to calculate total burst time at ENDBURST.
*/
unsigned long StartBurst;
/** True if this server is hidden
*/
bool Hidden;
/** True if the server answered their last ping
*/
bool AnsweredLastPing();
/** Set the server as responding to its last ping
*/
void SetPingFlag();
/** Get the TreeSocket pointer for local servers.
* For remote servers, this returns NULL.
*/
TreeSocket* GetSocket();
/** Get the parent server.
* For the root node, this returns NULL.
*/
TreeServer* GetParent();
/** Set the server version string
*/
void SetVersion(const std::string &Version);
/** Set the full version string
* @param verstr The version string to set
*/
void SetFullVersion(const std::string& verstr) { fullversion = verstr; }
/** Sets the description of this server. Called when the description of a remote server changes
* and we are notified about it.
* @param descstr The description to set
*/
void SetDesc(const std::string& descstr) { description = descstr; }
/** Return all child servers
*/
const ChildServers& GetChildren() const { return Children; }
/** Add a child server
*/
void AddChild(TreeServer* Child);
/** Delete a child server, return false if it didn't exist.
*/
bool DelChild(TreeServer* Child);
/** Removes child nodes of this node, and of that node, etc etc.
* This is used during netsplits to automatically tidy up the
* server tree. It is slow, we don't use it for much else.
*/
void Tidy();
/** Get server ID
*/
const std::string& GetID();
/** Marks a server as having finished bursting and performs appropriate actions.
*/
void FinishBurst();
/** Recursive call for child servers */
void FinishBurstInternal();
/** (Re)check the uline state of this server
*/
void CheckULine();
CullResult cull();
/** Destructor
* Removes the reference to this object from the
* hash maps.
*/
~TreeServer();
/** Returns the TreeServer the given user is connected to
* @param user The user whose server to return
* @return The TreeServer this user is connected to.
*/
static TreeServer* Get(User* user)
{
return static_cast<TreeServer*>(user->server);
}
};
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