summaryrefslogtreecommitdiff
path: root/src/modules/m_spanningtree/utils.h
blob: e97df38393db593ca6e742457559a548a52d57bc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
/*
 * InspIRCd -- Internet Relay Chat Daemon
 *
 *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
 *   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 "inspircd.h"
#include "cachetimer.h"

/* Foward declarations */
class TreeServer;
class TreeSocket;
class Link;
class Autoconnect;
class ModuleSpanningTree;
class SpanningTreeUtilities;

/* This hash_map holds the hash equivalent of the server
 * tree, used for rapid linear lookups.
 */
typedef TR1NS::unordered_map<std::string, TreeServer*, irc::insensitive, irc::StrHashComp> server_hash;

typedef std::set<TreeServer*> TreeServerList;

/** Contains helper functions and variables for this module,
 * and keeps them out of the global namespace
 */
class SpanningTreeUtilities : public classbase
{
	/** Creates a line in the :<prefix> <command> [<params>] format
	 */
	std::string ConstructLine(const std::string& prefix, const std::string& command, const parameterlist& params);

	CacheRefreshTimer RefreshTimer;

 public:
	/** Creator module
	 */
	ModuleSpanningTree* Creator;

	/** Flatten links and /MAP for non-opers
	 */
	bool FlatLinks;
	/** Hide U-Lined servers in /MAP and /LINKS
	 */
	bool HideULines;
	/** Announce TS changes to channels on merge
	 */
	bool AnnounceTSChange;

	/** Allow modules marked as VF_OPTCOMMON to be mismatched when linking
	 */
	bool AllowOptCommon;

	/** Make snomasks +CQ quiet during bursts and splits
	 */
	bool quiet_bursts;

	/* Number of seconds that a server can go without ping
	 * before opers are warned of high latency.
	 */
	int PingWarnTime;
	/** This variable represents the root of the server tree
	 */
	TreeServer *TreeRoot;
	/** IPs allowed to link to us
	 */
	std::vector<std::string> ValidIPs;
	/** Hash of currently connected servers by name
	 */
	server_hash serverlist;
	/** Hash of currently known server ids
	 */
	server_hash sidlist;
	/** List of all outgoing sockets and their timeouts
	 */
	std::map<TreeSocket*, std::pair<std::string, int> > timeoutlist;
	/** Holds the data from the <link> tags in the conf
	 */
	std::vector<reference<Link> > LinkBlocks;
	/** Holds the data from the <autoconnect> tags in the conf
	 */
	std::vector<reference<Autoconnect> > AutoconnectBlocks;

	/** True (default) if we are to use challenge-response HMAC
	 * to authenticate passwords.
	 *
	 * NOTE: This defaults to on, but should be turned off if
	 * you are linking to an older version of inspircd.
	 */
	bool ChallengeResponse;

	/** Ping frequency of server to server links
	 */
	int PingFreq;

	/** Initialise utility class
	 */
	SpanningTreeUtilities(ModuleSpanningTree* Creator);

	/** Prepare for class destruction
	 */
	CullResult cull();

	/** Destroy class and free listeners etc
	 */
	~SpanningTreeUtilities();

	void RouteCommand(TreeServer*, const std::string&, const parameterlist&, User*);

	/** Send a message from this server to one other local or remote
	 */
	bool DoOneToOne(const std::string& prefix, const std::string& command, const parameterlist& params, const std::string& target);

	/** Send a message from this server to all but one other, local or remote
	 */
	bool DoOneToAllButSender(const std::string &prefix, const std::string &command, const parameterlist& params, const std::string& omit);

	/** Send a message from this server to all others
	 */
	bool DoOneToMany(const std::string &prefix, const std::string &command, const parameterlist &params);

	/** Read the spanningtree module's tags from the config file
	 */
	void ReadConfiguration();

	/** Compile a list of servers which contain members of channel c
	 */
	void GetListOfServersForChannel(Channel* c, TreeServerList &list, char status, const CUList &exempt_list);

	/** Find a server by name
	 */
	TreeServer* FindServer(const std::string &ServerName);

	/** Find server by SID
	 */
	TreeServer* FindServerID(const std::string &id);

	/** Find a route to a server by name
	 */
	TreeServer* BestRouteTo(const std::string &ServerName);

	/** Find a server by glob mask
	 */
	TreeServer* FindServerMask(const std::string &ServerName);

	/** Find a link tag from a server name
	 */
	Link* FindLink(const std::string& name);

	/** Refresh the IP cache used for allowing inbound connections
	 */
	void RefreshIPCache();

	/** Sends a PRIVMSG or a NOTICE to a channel obeying an exempt list and an optional prefix
	 */
	void SendChannelMessage(const std::string& prefix, Channel* target, const std::string &text, char status, const CUList& exempt_list, const char* message_type);
};