2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
5 * Copyright (C) 2018 Chris Novakovic <chrisnovakovic@users.noreply.github.com>
6 * Copyright (C) 2013-2014, 2016 Attila Molnar <attilamolnar@hush.com>
7 * Copyright (C) 2013 Daniel Vassdal <shutter@canternet.org>
8 * Copyright (C) 2012-2014, 2016-2021 Sadie Powell <sadie@witchery.services>
9 * Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
10 * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
11 * Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
12 * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
13 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
14 * Copyright (C) 2006-2008 Craig Edwards <brain@inspircd.org>
15 * Copyright (C) 2006 Oliver Lupton <om@inspircd.org>
17 * This file is part of InspIRCd. InspIRCd is free software: you can
18 * redistribute it and/or modify it under the terms of the GNU General Public
19 * License as published by the Free Software Foundation, version 2.
21 * This program is distributed in the hope that it will be useful, but WITHOUT
22 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
23 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
26 * You should have received a copy of the GNU General Public License
27 * along with this program. If not, see <http://www.gnu.org/licenses/>.
39 #include "socketengine.h"
41 #include "token_list.h"
43 /** Structure representing a single \<tag> in config */
44 class CoreExport ConfigTag : public refcountbase
48 const std::string tag;
49 const std::string src_name;
52 /** Get the value of an option, using def if it does not exist */
53 std::string getString(const std::string& key, const std::string& def, const TR1NS::function<bool(const std::string&)>& validator);
54 /** Get the value of an option, using def if it does not exist */
55 std::string getString(const std::string& key, const std::string& def = "", size_t minlen = 0, size_t maxlen = UINT32_MAX);
56 /** Get the value of an option, using def if it does not exist */
57 long getInt(const std::string& key, long def, long min = LONG_MIN, long max = LONG_MAX);
58 /** Get the value of an option, using def if it does not exist */
59 unsigned long getUInt(const std::string& key, unsigned long def, unsigned long min = 0, unsigned long max = ULONG_MAX);
60 /** Get the value of an option, using def if it does not exist */
61 double getFloat(const std::string& key, double def, double min = DBL_MIN, double max = DBL_MAX);
62 /** Get the value of an option, using def if it does not exist */
63 bool getBool(const std::string& key, bool def = false);
65 /** Get the value in seconds of a duration that is in the user-friendly "1h2m3s" format,
66 * using a default value if it does not exist or is out of bounds.
67 * @param key The config key name
68 * @param def Default value (optional)
69 * @param min Minimum acceptable value (optional)
70 * @param max Maximum acceptable value (optional)
71 * @return The duration in seconds
73 unsigned long getDuration(const std::string& key, unsigned long def, unsigned long min = 0, unsigned long max = ULONG_MAX);
75 /** Get the value of an option
76 * @param key The option to get
77 * @param value The location to store the value (unmodified if does not exist)
78 * @param allow_newline Allow newlines in the option (normally replaced with spaces)
79 * @return true if the option exists
81 bool readString(const std::string& key, std::string& value, bool allow_newline = false);
83 std::string getTagLocation();
85 inline const ConfigItems& getItems() const { return items; }
87 /** Create a new ConfigTag, giving access to the private ConfigItems item list */
88 static ConfigTag* create(const std::string& Tag, const std::string& file, int line, ConfigItems*& Items);
90 ConfigTag(const std::string& Tag, const std::string& file, int line);
93 /** Defines the server's length limits on various length-limited
94 * items such as topics, nicknames, channel names etc.
99 /** Maximum line length */
101 /** Maximum nickname length */
103 /** Maximum channel length */
105 /** Maximum number of modes per line */
107 /** Maximum length of ident, not including ~ etc */
109 /** Maximum length of a quit message */
111 /** Maximum topic length */
113 /** Maximum kick message length */
115 /** Maximum real name length */
117 /** Maximum away message length */
119 /** Maximum hostname length */
122 /** Read all limits from a config tag. Limits which aren't specified in the tag are set to a default value.
123 * @param tag Configuration tag to read the limits from
125 ServerLimits(ConfigTag* tag);
127 /** Maximum length of a n!u\@h mask */
128 size_t GetMaxMask() const { return NickMax + 1 + IdentMax + 1 + MaxHost; }
131 struct CommandLineConf
133 /** If this value is true, the owner of the
134 * server specified -nofork on the command
135 * line, causing the daemon to stay in the
140 /** If this value if true then all log
141 * messages will be output, regardless of
142 * the level given in the config file.
143 * This is set with the -debug commandline
148 /** If this is true then log output will be
149 * written to the logfile. This is the default.
150 * If you put -nolog on the commandline then
151 * the logfile will not be written.
152 * This is meant to be used in conjunction with
153 * -debug for debugging without filling up the
158 /** If this is true, a PID file will be written
159 * to the file given in the "file" variable of
160 * the \<pid> tag in the config file. This is
162 * Passing --nopid as a command line argument
163 * sets this to false; in this case, a PID file
164 * will not be written, even the default PID
165 * file that is usually written when the \<pid>
166 * tag is not defined in the config file.
170 /* Whether the --runasroot option was specified at boot. */
173 /** Saved argc from startup. */
176 /** Saved argv from startup. */
180 class CoreExport OperInfo : public refcountbase
183 TokenList AllowedOperCommands;
184 TokenList AllowedPrivs;
186 /** Allowed user modes from oper classes. */
187 std::bitset<64> AllowedUserModes;
189 /** Allowed channel modes from oper classes. */
190 std::bitset<64> AllowedChanModes;
192 /** Allowed snomasks from oper classes. */
193 std::bitset<64> AllowedSnomasks;
195 /** \<oper> block used for this oper-up. May be NULL. */
196 reference<ConfigTag> oper_block;
197 /** \<type> block used for this oper-up. Valid for local users, may be NULL on remote */
198 reference<ConfigTag> type_block;
199 /** \<class> blocks referenced from the \<type> block. These define individual permissions */
200 std::vector<reference<ConfigTag> > class_blocks;
201 /** Name of the oper type; i.e. the one shown in WHOIS */
204 /** Creates a new OperInfo with the specified oper type name.
205 * @param Name The name of the oper type.
207 OperInfo(const std::string& Name);
209 /** Get a configuration item, searching in the oper, type, and class blocks (in that order) */
210 std::string getConfig(const std::string& key);
214 /** This class holds the bulk of the runtime configuration for the ircd.
215 * It allows for reading new config values, accessing configuration files,
216 * and storage of the configuration data needed to run the ircd, such as
217 * the servername, connect classes, /ADMIN data, MOTDs and filenames etc.
219 class CoreExport ServerConfig
222 void CrossCheckOperClassType();
223 void CrossCheckConnectBlocks(ServerConfig* current);
226 /** How to treat a user in a channel who is banned. */
227 enum BannedUserTreatment
229 /** Don't treat a banned user any different to normal. */
232 /** Restrict the actions of a banned user. */
235 /** Restrict the actions of a banned user and notify them of their treatment. */
257 ServerPaths(ConfigTag* tag);
259 std::string PrependConfig(const std::string& fn) const { return FileSystem::ExpandPath(Config, fn); }
260 std::string PrependData(const std::string& fn) const { return FileSystem::ExpandPath(Data, fn); }
261 std::string PrependLog(const std::string& fn) const { return FileSystem::ExpandPath(Log, fn); }
262 std::string PrependModule(const std::string& fn) const { return FileSystem::ExpandPath(Module, fn); }
263 std::string PrependRuntime(const std::string& fn) const { return FileSystem::ExpandPath(Runtime, fn); }
266 /** Holds a complete list of all connect blocks
268 typedef std::vector<reference<ConnectClass> > ClassVector;
270 /** Index of valid oper blocks and types
272 typedef insp::flat_map<std::string, reference<OperInfo> > OperIndex;
274 /** Get a configuration tag by name. If one or more tags are present then the first is returned.
275 * @param tag The name of the tag to get.
276 * @returns Either a tag from the config or EmptyTag.
278 ConfigTag* ConfValue(const std::string& tag);
280 /** Get a list of configuration tags by name.
281 * @param tag The name of the tags to get.
282 * @returns Either a list of tags from the config or an empty ConfigTagList.
284 ConfigTagList ConfTags(const std::string& tag);
286 /** An empty configuration tag. */
289 /** Error stream, contains error output from any failed configuration parsing.
291 std::stringstream errstr;
293 /** True if this configuration is valid enough to run with */
296 /** Bind to IPv6 by default */
299 /** This holds all the information in the config file,
300 * it's indexed by tag name to a vector of key/values.
302 ConfigDataHash config_data;
304 /** This holds all extra files that have been read in the configuration
305 * (for example, MOTD and RULES files are stored here)
307 ConfigFileCache Files;
309 /** Length limits, see definition of ServerLimits class
313 /** Locations of various types of file (config, module, etc). */
316 /** Configuration parsed from the command line.
318 CommandLineConf cmdline;
320 /** Clones CIDR range for ipv4 (0-32)
321 * Defaults to 32 (checks clones on all IPs separately)
323 unsigned char c_ipv4_range;
325 /** Clones CIDR range for ipv6 (0-128)
326 * Defaults to 128 (checks on all IPs separately)
328 unsigned char c_ipv6_range;
330 /** Holds the server name of the local server
331 * as defined by the administrator.
333 std::string ServerName;
335 /** Notice to give to users when they are banned by an XLine
337 std::string XLineMessage;
339 /* Holds the network name the local server
340 * belongs to. This is an arbitrary field defined
341 * by the administrator.
345 /** Holds the description of the local server
346 * as defined by the administrator.
348 std::string ServerDesc;
350 /** How to treat a user in a channel who is banned. */
351 BannedUserTreatment RestrictBannedUsers;
353 /** The size of the read() buffer in the user
354 * handling code, used to read data into a user's
359 /** The value to be used for listen() backlogs
364 /** If we should check for clones during CheckClass() in AddUser()
365 * Setting this to false allows to not trigger on maxclones for users
366 * that may belong to another class after DNS-lookup is complete.
367 * It does, however, make the server spend more time on users we may potentially not want.
371 /** The soft limit value assigned to the irc server.
372 * The IRC server will not allow more than this
373 * number of local users.
375 unsigned int SoftLimit;
377 /** Maximum number of targets for a multi target command
378 * such as PRIVMSG or KICK
380 unsigned int MaxTargets;
382 /** The number of seconds that the server clock can skip by before server operators are warned. */
385 /** True if we're going to hide ban reasons for non-opers (e.g. G-lines,
390 /** True if raw I/O is being logged */
393 /** Set to a non-empty string to obfuscate server names. */
394 std::string HideServer;
396 /** The full pathname and filename of the PID
397 * file as defined in the configuration.
401 /** The connect classes in use by the IRC server.
405 /** Default channel modes
407 std::string DefaultModes;
409 /** Custom version string, which if defined can replace the system info in VERSION.
411 std::string CustomVersion;
413 /** If set to true, provide syntax hints for unknown commands
417 /** The name of the casemapping method used by this server.
419 std::string CaseMapping;
421 /** If set to true, the full nick!user\@host will be shown in the TOPIC command
422 * for who set the topic last. If false, only the nick is shown.
424 bool FullHostInTopic;
426 /** Oper blocks keyed by their name
428 OperIndex oper_blocks;
430 /** Oper types keyed by their name
434 /** Default value for <connect:maxchans>, deprecated in 3.0
436 unsigned int MaxChans;
438 /** Default value for <oper:maxchans>, deprecated in 3.0
440 unsigned int OperMaxChans;
442 /** Unique server ID.
443 * NOTE: 000...999 are usable for InspIRCd servers. This
444 * makes code simpler. 0AA, 1BB etc with letters are reserved
449 /** Construct a new ServerConfig
455 /** Get server ID as string with required leading zeroes
457 const std::string& GetSID() const { return sid; }
459 /** Retrieves the server name which should be shown to users. */
460 const std::string& GetServerName() const { return HideServer.empty() ? ServerName : HideServer; }
462 /** Retrieves the server description which should be shown to users. */
463 const std::string& GetServerDesc() const { return HideServer.empty() ? ServerDesc : HideServer; }
465 /** Read the entire configuration into memory
466 * and initialize this class. All other methods
467 * should be used only by the core.
471 /** Apply configuration changes from the old configuration.
473 void Apply(ServerConfig* old, const std::string &useruid);
474 void ApplyModules(User* user);
478 /** Escapes a value for storage in a configuration key.
479 * @param str The string to escape.
480 * @param xml Are we using the XML config format?
482 static std::string Escape(const std::string& str, bool xml = true);
484 /** If this value is true, snotices will not stack when repeats are sent
489 /** The background thread for config reading, so that reading from executable includes
492 class CoreExport ConfigReaderThread : public Thread
494 ServerConfig* Config;
497 const std::string TheUserUID;
498 ConfigReaderThread(const std::string &useruid)
499 : Config(new ServerConfig), done(false), TheUserUID(useruid)
503 virtual ~ConfigReaderThread()
508 void Run() CXX11_OVERRIDE;
509 /** Run in the main thread to apply the configuration */
511 bool IsDone() { return done; }
514 /** Represents the status of a config load. */
515 class CoreExport ConfigStatus
518 /** Whether this is the initial config load. */
521 /** The user who initiated the config load or NULL if not initiated by a user. */
524 /** Initializes a new instance of the ConfigStatus class.
525 * @param user The user who initiated the config load or NULL if not initiated by a user.
526 * @param isinitial Whether this is the initial config load.
528 ConfigStatus(User* user = NULL, bool isinitial = false)