2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
5 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
6 * Copyright (C) 2007 Craig Edwards <craigedwards@brainbox.cc>
8 * This file is part of InspIRCd. InspIRCd is free software: you can
9 * redistribute it and/or modify it under the terms of the GNU General Public
10 * License as published by the Free Software Foundation, version 2.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "treesocket.h"
26 /** Each server in the tree is represented by one class of
27 * type TreeServer. A locally connected TreeServer can
28 * have a class of type TreeSocket associated with it, for
29 * remote servers, the TreeSocket entry will be NULL.
30 * Each server also maintains a pointer to its parent
31 * (NULL if this server is ours, at the top of the tree)
32 * and a pointer to its "Route" (see the comments in the
33 * constructors below), and also a dynamic list of pointers
34 * to its children which can be iterated recursively
35 * if required. Creating or deleting objects of type
36 i* TreeServer automatically maintains the hash_map of
37 * TreeServer items, deleting and inserting them as they
38 * are created and destroyed.
40 class TreeServer : public Server
42 TreeServer* Parent; /* Parent entry */
43 TreeServer* Route; /* Route entry */
44 std::vector<TreeServer*> Children; /* List of child objects */
45 std::string VersionString; /* Version string or empty string */
46 TreeSocket* Socket; /* Socket used to communicate with this server */
47 time_t NextPing; /* After this time, the server should be PINGed*/
48 bool LastPingWasGood; /* True if the server responded to the last PING with a PONG */
49 std::string sid; /* Server ID */
51 /** This method is used to add this TreeServer to the
52 * hash maps. It is only called by the constructors.
57 typedef std::vector<TreeServer*> ChildServers;
58 FakeUser* const ServerUser; /* User representing this server */
61 bool Warned; /* True if we've warned opers about high latency on this server */
62 bool bursting; /* whether or not this server is bursting */
64 unsigned int UserCount; /* How many users are on this server? [note: doesn't care about +i] */
65 unsigned int OperCount; /* How many opers are on this server? */
67 /** We use this constructor only to create the 'root' item, Utils->TreeRoot, which
68 * represents our own server. Therefore, it has no route, no parent, and
69 * no socket associated with it. Its version string is our own local version.
73 /** When we create a new server, we call this constructor to initialize it.
74 * This constructor initializes the server's Route and Parent, and sets up
75 * its ping counters so that it will be pinged one minute from now.
77 TreeServer(const std::string& Name, const std::string& Desc, const std::string& id, TreeServer* Above, TreeSocket* Sock, bool Hide);
79 int QuitUsers(const std::string &reason);
82 * The 'route' is defined as the locally-
83 * connected server which can be used to reach this server.
85 TreeServer* GetRoute();
87 /** Returns true if this server is the tree root (i.e.: us)
89 bool IsRoot() const { return (this->Parent == NULL); }
91 /** Returns true if this server is locally connected
93 bool IsLocal() const { return (this->Route == this); }
95 /** Get server version string
97 const std::string& GetVersion();
99 /** Set time we are next due to ping this server
101 void SetNextPingTime(time_t t);
103 /** Get the time we are next due to ping this server
105 time_t NextPingTime();
107 /** Last ping time in milliseconds, used to calculate round trip time
109 unsigned long LastPingMsec;
111 /** Round trip time of last ping
115 /** When we recieved BURST from this server, used to calculate total burst time at ENDBURST.
117 unsigned long StartBurst;
119 /** True if this server is hidden
123 /** True if the server answered their last ping
125 bool AnsweredLastPing();
127 /** Set the server as responding to its last ping
131 /** Get the TreeSocket pointer for local servers.
132 * For remote servers, this returns NULL.
134 TreeSocket* GetSocket();
136 /** Get the parent server.
137 * For the root node, this returns NULL.
139 TreeServer* GetParent();
141 /** Set the server version string
143 void SetVersion(const std::string &Version);
145 /** Return all child servers
147 const ChildServers& GetChildren() const { return Children; }
149 /** Add a child server
151 void AddChild(TreeServer* Child);
153 /** Delete a child server, return false if it didn't exist.
155 bool DelChild(TreeServer* Child);
157 /** Removes child nodes of this node, and of that node, etc etc.
158 * This is used during netsplits to automatically tidy up the
159 * server tree. It is slow, we don't use it for much else.
165 const std::string& GetID();
167 /** Marks a server as having finished bursting and performs appropriate actions.
170 /** Recursive call for child servers */
171 void FinishBurstInternal();
173 /** (Re)check the uline state of this server
180 * Removes the reference to this object from the
185 /** Returns the TreeServer the given user is connected to
186 * @param user The user whose server to return
187 * @return The TreeServer this user is connected to.
189 static TreeServer* Get(User* user)
191 return static_cast<TreeServer*>(user->server);