1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
29 // used with OnExtendedMode() method of modules
35 // used with OnAccessCheck() method of modules
37 #define ACR_DEFAULT 0 // Do default action (act as if the module isnt even loaded)
38 #define ACR_DENY 1 // deny the action
39 #define ACR_ALLOW 2 // allow the action
41 #define AC_KICK 0 // a user is being kicked
42 #define AC_DEOP 1 // a user is being deopped
43 #define AC_OP 2 // a user is being opped
44 #define AC_VOICE 3 // a user is being voiced
45 #define AC_DEVOICE 4 // a user is being devoiced
46 #define AC_HALFOP 5 // a user is being halfopped
47 #define AC_DEHALFOP 6 // a user is being dehalfopped
48 #define AC_INVITE 7 // a user is being invited
49 #define AC_GENERAL_MODE 8 // a user channel mode is being changed
51 // used to define a set of behavior bits for a module
53 #define VF_STATIC 1 // module is static, cannot be /unloadmodule'd
54 #define VF_VENDOR 2 // module is a vendor module (came in the original tarball, not 3rd party)
55 #define VF_SERVICEPROVIDER 4 // module provides a service to other modules (can be a dependency)
56 #define VF_COMMON 8 // module needs to be common on all servers in a mesh to link
65 /** Low level definition of a FileReader classes file cache area
67 typedef std::deque<std::string> file_cache;
68 typedef file_cache string_list;
70 /** Holds a list of users in a channel
72 typedef std::deque<userrec*> chanuserlist;
75 // This #define allows us to call a method in all
76 // loaded modules in a readable simple way, e.g.:
77 // 'FOREACH_MOD OnConnect(user);'
79 #define FOREACH_MOD for (int i = 0; i <= MODCOUNT; i++) modules[i]->
81 // This define is similar to the one above but returns a result in MOD_RESULT.
82 // The first module to return a nonzero result is the value to be accepted,
83 // and any modules after are ignored.
85 // *********************************************************************************************
87 #define FOREACH_RESULT(x) { MOD_RESULT = 0; \
88 for (int i = 0; i <= MODCOUNT; i++) { \
89 int res = modules[i]->x ; \
97 // *********************************************************************************************
99 #define FD_MAGIC_NUMBER -42
101 extern void createcommand(char* cmd, handlerfunc f, char flags, int minparams, char* source);
102 extern void server_mode(char **parameters, int pcnt, userrec *user);
104 // class Version holds the version information of a Module, returned
105 // by Module::GetVersion (thanks RD)
107 /** Holds a module's Version information
108 * The four members (set by the constructor only) indicate details as to the version number
109 * of a module. A class of type Version is returned by the GetVersion method of the Module class.
111 class Version : public classbase
114 const int Major, Minor, Revision, Build, Flags;
115 Version(int major, int minor, int revision, int build, int flags);
118 /** Holds /ADMIN data
119 * This class contains the admin details of the local server. It is constructed by class Server,
120 * and has three read-only values, Name, Email and Nick that contain the specified values for the
121 * server where the module is running.
123 class Admin : public classbase
126 const std::string Name, Email, Nick;
127 Admin(std::string name, std::string email, std::string nick);
130 /** Base class for all InspIRCd modules
131 * This class is the base class for InspIRCd modules. All modules must inherit from this class,
132 * its methods will be called when irc server events occur. class inherited from module must be
133 * instantiated by the ModuleFactory class (see relevent section) for the plugin to be initialised.
135 class Module : public classbase
139 /** Default constructor
140 * creates a module class
144 /** Default destructor
145 * destroys a module class
149 /** Returns the version number of a Module.
150 * The method should return a Version object with its version information assigned via
153 virtual Version GetVersion();
155 /** Called when a user connects.
156 * The details of the connecting user are available to you in the parameter userrec *user
158 virtual void OnUserConnect(userrec* user);
160 /** Called when a user quits.
161 * The details of the exiting user are available to you in the parameter userrec *user
162 * This event is only called when the user is fully registered when they quit. To catch
163 * raw disconnections, use the OnUserDisconnect method.
165 virtual void OnUserQuit(userrec* user);
167 /** Called whenever a user's socket is closed.
168 * The details of the exiting user are available to you in the parameter userrec *user
169 * This event is called for all users, registered or not, as a cleanup method for modules
170 * which might assign resources to user, such as dns lookups, objects and sockets.
172 virtual void OnUserDisconnect(userrec* user);
174 /** Called when a user joins a channel.
175 * The details of the joining user are available to you in the parameter userrec *user,
176 * and the details of the channel they have joined is available in the variable chanrec *channel
178 virtual void OnUserJoin(userrec* user, chanrec* channel);
180 /** Called when a user parts a channel.
181 * The details of the leaving user are available to you in the parameter userrec *user,
182 * and the details of the channel they have left is available in the variable chanrec *channel
184 virtual void OnUserPart(userrec* user, chanrec* channel);
186 /** Called before a packet is transmitted across the irc network between two irc servers.
187 * This allows you to easily represent it in the correct ways to implement encryption, compression,
188 * digital signatures and anything else you may want to add. This should be regarded as a pre-processor
189 * and will be called before ANY other operations within the ircd core program.
191 virtual void OnPacketTransmit(std::string &data, std::string serv);
193 /** Called after a packet is received from another irc server.
194 * This allows you to easily represent it in the correct ways to implement encryption, compression,
195 * digital signatures and anything else you may want to add. This should be regarded as a pre-processor
196 * and will be called immediately after the packet is received but before any other operations with the
199 virtual void OnPacketReceive(std::string &data, std::string serv);
201 /** Called on rehash.
202 * This method is called prior to a /REHASH or when a SIGHUP is received from the operating
203 * system. You should use it to reload any files so that your module keeps in step with the
204 * rest of the application.
206 virtual void OnRehash();
208 /** Called when a raw command is transmitted or received.
209 * This method is the lowest level of handler available to a module. It will be called with raw
210 * data which is passing through a connected socket. If you wish, you may munge this data by changing
211 * the string parameter "raw". If you do this, after your function exits it will immediately be
212 * cut down to 510 characters plus a carriage return and linefeed. For INBOUND messages only (where
213 * inbound is set to true) the value of user will be the userrec of the connection sending the
214 * data. This is not possible for outbound data because the data may be being routed to multiple targets.
216 virtual void OnServerRaw(std::string &raw, bool inbound, userrec* user);
218 /** Called whenever an extended mode is to be processed.
219 * The type parameter is MT_SERVER, MT_CLIENT or MT_CHANNEL, dependent on where the mode is being
220 * changed. mode_on is set when the mode is being set, in which case params contains a list of
221 * parameters for the mode as strings. If mode_on is false, the mode is being removed, and parameters
222 * may contain the parameters for the mode, dependent on wether they were defined when a mode handler
223 * was set up with Server::AddExtendedMode
224 * If the mode is a channel mode, target is a chanrec*, and if it is a user mode, target is a userrec*.
225 * You must cast this value yourself to make use of it.
227 virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms);
229 /** Called whenever a user is about to join a channel, before any processing is done.
230 * Returning a value of 1 from this function stops the process immediately, causing no
231 * output to be sent to the user by the core. If you do this you must produce your own numerics,
232 * notices etc. This is useful for modules which may want to mimic +b, +k, +l etc. Returning -1 from
233 * this function forces the join to be allowed, bypassing restrictions such as banlists, invite, keys etc.
237 * If the user joins a NEW channel which does not exist yet, OnUserPreJoin will be called BEFORE the channel
238 * record is created. This will cause chanrec* chan to be NULL. There is very little you can do in form of
239 * processing on the actual channel record at this point, however the channel NAME will still be passed in
240 * char* cname, so that you could for example implement a channel blacklist or whitelist, etc.
242 virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname);
244 /** Called whenever a user is about to be kicked.
245 * Returning a value of 1 from this function stops the process immediately, causing no
246 * output to be sent to the user by the core. If you do this you must produce your own numerics,
249 virtual int OnUserPreKick(userrec* source, userrec* user, chanrec* chan, std::string reason);
251 /** Called whenever a user is kicked.
252 * If this method is called, the kick is already underway and cannot be prevented, so
253 * to prevent a kick, please use Module::OnUserPreKick instead of this method.
255 virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, std::string reason);
257 /** Called whenever a user opers locally.
258 * The userrec will contain the oper mode 'o' as this function is called after any modifications
259 * are made to the user's structure by the core.
261 virtual void OnOper(userrec* user);
263 /** Called whenever a user types /INFO.
264 * The userrec will contain the information of the user who typed the command. Modules may use this
265 * method to output their own credits in /INFO (which is the ircd's version of an about box).
266 * It is purposefully not possible to modify any info that has already been output, or halt the list.
267 * You must write a 371 numeric to the user, containing your info in the following format:
269 * <nick> :information here
271 virtual void OnInfo(userrec* user);
273 /** Called whenever a /WHOIS is performed on a local user.
274 * The source parameter contains the details of the user who issued the WHOIS command, and
275 * the dest parameter contains the information of the user they are whoising.
277 virtual void OnWhois(userrec* source, userrec* dest);
279 /** Called whenever a user is about to invite another user into a channel, before any processing is done.
280 * Returning 1 from this function stops the process immediately, causing no
281 * output to be sent to the user by the core. If you do this you must produce your own numerics,
282 * notices etc. This is useful for modules which may want to filter invites to channels.
284 virtual int OnUserPreInvite(userrec* source,userrec* dest,chanrec* channel);
286 /** Called whenever a user is about to PRIVMSG A user or a channel, before any processing is done.
287 * Returning any nonzero value from this function stops the process immediately, causing no
288 * output to be sent to the user by the core. If you do this you must produce your own numerics,
289 * notices etc. This is useful for modules which may want to filter or redirect messages.
290 * target_type can be one of TYPE_USER or TYPE_CHANNEL. If the target_type value is a user,
291 * you must cast dest to a userrec* otherwise you must cast it to a chanrec*, this is the details
292 * of where the message is destined to be sent.
294 virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text);
296 /** Called whenever a user is about to NOTICE A user or a channel, before any processing is done.
297 * Returning any nonzero value from this function stops the process immediately, causing no
298 * output to be sent to the user by the core. If you do this you must produce your own numerics,
299 * notices etc. This is useful for modules which may want to filter or redirect messages.
300 * target_type can be one of TYPE_USER or TYPE_CHANNEL. If the target_type value is a user,
301 * you must cast dest to a userrec* otherwise you must cast it to a chanrec*, this is the details
302 * of where the message is destined to be sent.
303 * You may alter the message text as you wish before relinquishing control to the next module
304 * in the chain, and if no other modules block the text this altered form of the text will be sent out
305 * to the user and possibly to other servers.
307 virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text);
309 /** Called before any nickchange, local or remote. This can be used to implement Q-lines etc.
310 * Please note that although you can see remote nickchanges through this function, you should
311 * NOT make any changes to the userrec if the user is a remote user as this may cause a desnyc.
312 * check user->server before taking any action (including returning nonzero from the method).
313 * If your method returns nonzero, the nickchange is silently forbidden, and it is down to your
314 * module to generate some meaninful output.
316 virtual int OnUserPreNick(userrec* user, std::string newnick);
318 /** Called after any nickchange, local or remote. This can be used to track users after nickchanges
319 * have been applied. Please note that although you can see remote nickchanges through this function, you should
320 * NOT make any changes to the userrec if the user is a remote user as this may cause a desnyc.
321 * check user->server before taking any action (including returning nonzero from the method).
322 * Because this method is called after the nickchange is taken place, no return values are possible
323 * to indicate forbidding of the nick change. Use OnUserPreNick for this.
325 virtual void OnUserPostNick(userrec* user, std::string oldnick);
327 /** Called before an action which requires a channel privilage check.
328 * This function is called before many functions which check a users status on a channel, for example
329 * before opping a user, deopping a user, kicking a user, etc.
330 * There are several values for access_type which indicate for what reason access is being checked.
332 * AC_KICK (0) - A user is being kicked<br>
333 * AC_DEOP (1) - a user is being deopped<br>
334 * AC_OP (2) - a user is being opped<br>
335 * AC_VOICE (3) - a user is being voiced<br>
336 * AC_DEVOICE (4) - a user is being devoiced<br>
337 * AC_HALFOP (5) - a user is being halfopped<br>
338 * AC_DEHALFOP (6) - a user is being dehalfopped<br>
339 * AC_INVITE (7) - a user is being invited<br>
340 * AC_GENERAL_MODE (8) - a user channel mode is being changed<br><br>
341 * Upon returning from your function you must return either ACR_DEFAULT, to indicate the module wishes
342 * to do nothing, or ACR_DENY where approprate to deny the action, and ACR_ALLOW where appropriate to allow
343 * the action. Please note that in the case of some access checks (such as AC_GENERAL_MODE) access may be
344 * denied 'upstream' causing other checks such as AC_DEOP to not be reached. Be very careful with use of the
345 * AC_GENERAL_MODE type, as it may inadvertently override the behaviour of other modules. When the access_type
346 * is AC_GENERAL_MODE, the destination of the mode will be NULL (as it has not yet been determined).
348 virtual int OnAccessCheck(userrec* source,userrec* dest,chanrec* channel,int access_type);
350 /** Called during a netburst to sync user data.
351 * This is called during the netburst on a per-user basis. You should use this call to up any special
352 * user-related things which are implemented by your module, e.g. sending listmodes. You may return
353 * multiple commands in the string_list.
355 virtual string_list OnUserSync(userrec* user);
357 /** Called during a netburst to sync channel data.
358 * This is called during the netburst on a per-channel basis. You should use this call to up any special
359 * channel-related things which are implemented by your module, e.g. sending listmodes. You may return
360 * multiple commands in the string_list.
362 virtual string_list OnChannelSync(chanrec* chan);
364 /** Called when a 005 numeric is about to be output.
365 * The module should modify the 005 numeric if needed to indicate its features.
367 virtual void On005Numeric(std::string &output);
369 /** Called when a client is disconnected by KILL.
370 * If a client is killed by a server, e.g. a nickname collision or protocol error,
372 * Return 1 from this function to prevent the kill, and 0 from this function to allow
373 * it as normal. If you prevent the kill no output will be sent to the client, it is
374 * down to your module to generate this information.
375 * NOTE: It is NOT advisable to stop kills which originate from servers. If you do
376 * so youre risking race conditions, desyncs and worse!
378 virtual int OnKill(userrec* source, userrec* dest, std::string reason);
380 /** Called whenever a module is loaded.
381 * mod will contain a pointer to the module, and string will contain its name,
382 * for example m_widgets.so. This function is primary for dependency checking,
383 * your module may decide to enable some extra features if it sees that you have
384 * for example loaded "m_killwidgets.so" with "m_makewidgets.so". It is highly
385 * recommended that modules do *NOT* bail if they cannot satisfy dependencies,
386 * but instead operate under reduced functionality, unless the dependency is
387 * absolutely neccessary (e.g. a module that extends the features of another
390 virtual void OnLoadModule(Module* mod,std::string name);
392 /** Called once every five seconds for background processing.
393 * This timer can be used to control timed features. Its period is not accurate
394 * enough to be used as a clock, but it is gauranteed to be called at least once in
395 * any five second period, directly from the main loop of the server.
397 virtual void OnBackgroundTimer(time_t curtime);
399 /** Called whenever a list is needed for a listmode.
400 * For example, when a /MODE #channel +b (without any other parameters) is called,
401 * if a module was handling +b this function would be called. The function can then
402 * output any lists it wishes to. Please note that all modules will see all mode
403 * characters to provide the ability to extend each other, so please only output
404 * a list if the mode character given matches the one(s) you want to handle.
406 virtual void OnSendList(userrec* user, chanrec* channel, char mode);
408 /** Called whenever any command is about to be executed.
409 * This event occurs for all registered commands, wether they are registered in the core,
410 * or another module, but it will not occur for invalid commands (e.g. ones which do not
411 * exist within the command table). By returning 1 from this method you may prevent the
412 * command being executed. If you do this, no output is created by the core, and it is
413 * down to your module to produce any output neccessary.
414 * Note that unless you return 1, you should not destroy any structures (e.g. by using
415 * Server::QuitUser) otherwise when the command's handler function executes after your
416 * method returns, it will be passed an invalid pointer to the user object and crash!)
418 virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user);
420 /** Called to check if a user who is connecting can now be allowed to register
421 * If any modules return false for this function, the user is held in the waiting
422 * state until all modules return true. For example a module which implements ident
423 * lookups will continue to return false for a user until their ident lookup is completed.
424 * Note that the registration timeout for a user overrides these checks, if the registration
425 * timeout is reached, the user is disconnected even if modules report that the user is
426 * not ready to connect.
428 virtual bool OnCheckReady(userrec* user);
430 /** Called whenever a user is about to register their connection (e.g. before the user
431 * is sent the MOTD etc). Modules can use this method if they are performing a function
432 * which must be done before the actual connection is completed (e.g. ident lookups,
433 * dnsbl lookups, etc).
434 * Note that you should NOT delete the user record here by causing a disconnection!
435 * Use OnUserConnect for that instead.
437 virtual void OnUserRegister(userrec* user);
439 /** Called whenever a mode character is processed.
440 * Return 1 from this function to block the mode character from being processed entirely,
441 * so that you may perform your own code instead. Note that this method allows you to override
442 * modes defined by other modes, but this is NOT RECOMMENDED!
444 virtual int OnRawMode(userrec* user, chanrec* chan, char mode, std::string param, bool adding, int pcnt);
446 /** Called whenever a user joins a channel, to determine if invite checks should go ahead or not.
447 * This method will always be called for each join, wether or not the channel is actually +i, and
448 * determines the outcome of an if statement around the whole section of invite checking code.
449 * return 1 to explicitly allow the join to go ahead or 0 to ignore the event.
451 virtual int OnCheckInvite(userrec* user, chanrec* chan);
453 /** Called whenever a user joins a channel, to determine if key checks should go ahead or not.
454 * This method will always be called for each join, wether or not the channel is actually +k, and
455 * determines the outcome of an if statement around the whole section of key checking code.
456 * if the user specified no key, the keygiven string will be a valid but empty value.
457 * return 1 to explicitly allow the join to go ahead or 0 to ignore the event.
459 virtual int OnCheckKey(userrec* user, chanrec* chan, std::string keygiven);
461 /** Called whenever a user joins a channel, to determine if channel limit checks should go ahead or not.
462 * This method will always be called for each join, wether or not the channel is actually +l, and
463 * determines the outcome of an if statement around the whole section of channel limit checking code.
464 * return 1 to explicitly allow the join to go ahead or 0 to ignore the event.
466 virtual int OnCheckLimit(userrec* user, chanrec* chan);
468 /** Called whenever a user joins a channel, to determine if banlist checks should go ahead or not.
469 * This method will always be called for each join, wether or not the user actually matches a channel ban, and
470 * determines the outcome of an if statement around the whole section of ban checking code.
471 * return 1 to explicitly allow the join to go ahead or 0 to ignore the event.
473 virtual int OnCheckBan(userrec* user, chanrec* chan);
475 /** Called on all /STATS commands
476 * This method is triggered for all /STATS use, including stats symbols handled by the core.
478 virtual void OnStats(char symbol);
480 /** Called whenever a change of a local users displayed host is attempted.
481 * Return 1 to deny the host change, or 0 to allow it.
483 virtual int OnChangeLocalUserHost(userrec* user, std::string newhost);
485 /** Called whenever a change of a local users GECOS (fullname field) is attempted.
486 * return 1 to deny the name change, or 0 to allow it.
488 virtual int OnChangeLocalUserGECOS(userrec* user, std::string newhost);
490 /** Called whenever a topic is changed by a local user.
491 * Return 1 to deny the topic change, or 0 to allow it.
493 virtual int OnLocalTopicChange(userrec* user, chanrec* chan, std::string topic);
495 /** Called whenever an unknown token is received in a server to server link.
496 * The token value is the unknown token -- please check that no other modules are using the token
497 * that you use. Returning 1 supresses the 'unknown token type' error which is usually sent to
498 * all opers with +s. The params list is a list of parameters, and if any parameters start with a
499 * colon (:) it is treated as the whole of the last parameter, identical to how RFC messages are
500 * handled. source is the sender of the message, and reply is what should be replied to for a unicast
501 * message. Note that there are not many messages in the mesh protocol which require unicast
502 * messaging. tcp_host is the server name as a string, ipaddr is its ip address in dotted decimal
503 * notation and port is the port number it is using.
505 virtual int OnMeshToken(char token,string_list params,serverrec* source,serverrec* reply, std::string tcp_host,std::string ipaddr,int port);
509 /** Allows server output and query functions
510 * This class contains methods which allow a module to query the state of the irc server, and produce
511 * output to users and other servers. All modules should instantiate at least one copy of this class,
512 * and use its member functions to perform their tasks.
514 class Server : public classbase
517 /** Default constructor.
518 * Creates a Server object.
521 /** Default destructor.
522 * Destroys a Server object.
526 /** Sends text to all opers.
527 * This method sends a server notice to all opers with the usermode +s.
529 virtual void SendOpers(std::string s);
530 /** Writes a log string.
531 * This method writes a line of text to the log. If the level given is lower than the
532 * level given in the configuration, this command has no effect.
534 virtual void Log(int level, std::string s);
535 /** Sends a line of text down a TCP/IP socket.
536 * This method writes a line of text to an established socket, cutting it to 510 characters
537 * plus a carriage return and linefeed if required.
539 virtual void Send(int Socket, std::string s);
540 /** Sends text from the server to a socket.
541 * This method writes a line of text to an established socket, with the servername prepended
542 * as used by numerics (see RFC 1459)
544 virtual void SendServ(int Socket, std::string s);
545 /** Sends text from a user to a socket.
546 * This method writes a line of text to an established socket, with the given user's nick/ident
547 * /host combination prepended, as used in PRIVSG etc commands (see RFC 1459)
549 virtual void SendFrom(int Socket, userrec* User, std::string s);
550 /** Sends text from a user to another user.
551 * This method writes a line of text to a user, with a user's nick/ident
552 * /host combination prepended, as used in PRIVMSG etc commands (see RFC 1459)
553 * If you specify NULL as the source, then the data will originate from the
554 * local server, e.g. instead of:
556 * :user!ident@host TEXT
558 * The format will become:
562 * Which is useful for numerics and server notices to single users, etc.
564 virtual void SendTo(userrec* Source, userrec* Dest, std::string s);
565 /** Sends text from a user to a channel (mulicast).
566 * This method writes a line of text to a channel, with the given user's nick/ident
567 * /host combination prepended, as used in PRIVMSG etc commands (see RFC 1459). If the
568 * IncludeSender flag is set, then the text is also sent back to the user from which
569 * it originated, as seen in MODE (see RFC 1459).
571 virtual void SendChannel(userrec* User, chanrec* Channel, std::string s,bool IncludeSender);
572 /** Returns true if two users share a common channel.
573 * This method is used internally by the NICK and QUIT commands, and the Server::SendCommon
576 virtual bool CommonChannels(userrec* u1, userrec* u2);
577 /** Sends text from a user to one or more channels (mulicast).
578 * This method writes a line of text to all users which share a common channel with a given
579 * user, with the user's nick/ident/host combination prepended, as used in PRIVMSG etc
580 * commands (see RFC 1459). If the IncludeSender flag is set, then the text is also sent
581 * back to the user from which it originated, as seen in NICK (see RFC 1459). Otherwise, it
582 * is only sent to the other recipients, as seen in QUIT.
584 virtual void SendCommon(userrec* User, std::string text,bool IncludeSender);
585 /** Sends a WALLOPS message.
586 * This method writes a WALLOPS message to all users with the +w flag, originating from the
589 virtual void SendWallops(userrec* User, std::string text);
591 /** Returns true if a nick is valid.
592 * Nicks for unregistered connections will return false.
594 virtual bool IsNick(std::string nick);
595 /** Returns a count of the number of users on a channel.
596 * This will NEVER be 0, as if the chanrec exists, it will have at least one user in the channel.
598 virtual int CountUsers(chanrec* c);
599 /** Attempts to look up a nick and return a pointer to it.
600 * This function will return NULL if the nick does not exist.
602 virtual userrec* FindNick(std::string nick);
603 /** Attempts to look up a channel and return a pointer to it.
604 * This function will return NULL if the channel does not exist.
606 virtual chanrec* FindChannel(std::string channel);
607 /** Attempts to look up a user's privilages on a channel.
608 * This function will return a string containing either @, %, +, or an empty string,
609 * representing the user's privilages upon the channel you specify.
611 virtual std::string ChanMode(userrec* User, chanrec* Chan);
612 /** Checks if a user is on a channel.
613 * This function will return true or false to indicate if user 'User' is on channel 'Chan'.
615 virtual bool IsOnChannel(userrec* User, chanrec* Chan);
616 /** Returns the server name of the server where the module is loaded.
618 virtual std::string GetServerName();
619 /** Returns the network name, global to all linked servers.
621 virtual std::string GetNetworkName();
622 /** Returns the information of the server as returned by the /ADMIN command.
623 * See the Admin class for further information of the return value. The members
624 * Admin::Nick, Admin::Email and Admin::Name contain the information for the
625 * server where the module is loaded.
627 virtual Admin GetAdmin();
628 /** Adds an extended mode letter which is parsed by a module.
629 * This allows modules to add extra mode letters, e.g. +x for hostcloak.
630 * the "type" parameter is either MT_CHANNEL, MT_CLIENT, or MT_SERVER, to
631 * indicate wether the mode is a channel mode, a client mode, or a server mode.
632 * requires_oper is used with MT_CLIENT type modes only to indicate the mode can only
633 * be set or unset by an oper. If this is used for MT_CHANNEL type modes it is ignored.
634 * params_when_on is the number of modes to expect when the mode is turned on
635 * (for type MT_CHANNEL only), e.g. with mode +k, this would have a value of 1.
636 * the params_when_off value has a similar value to params_when_on, except it indicates
637 * the number of parameters to expect when the mode is disabled. Modes which act in a similar
638 * way to channel mode +l (e.g. require a parameter to enable, but not to disable) should
639 * use this parameter. The function returns false if the mode is unavailable, and will not
640 * attempt to allocate another character, as this will confuse users. This also means that
641 * as only one module can claim a specific mode character, the core does not need to keep track
642 * of which modules own which modes, which speeds up operation of the server. In this version,
643 * a mode can have at most one parameter, attempting to use more parameters will have undefined
646 virtual bool AddExtendedMode(char modechar, int type, bool requires_oper, int params_when_on, int params_when_off);
648 /** Adds an extended mode letter which is parsed by a module and handled in a list fashion.
649 * This call is used to implement modes like +q and +a. The characteristics of these modes are
652 * (1) They are ALWAYS on channels, not on users, therefore their type is MT_CHANNEL
654 * (2) They always take exactly one parameter when being added or removed
656 * (3) They can be set multiple times, usually on users in channels
658 * (4) The mode and its parameter are NOT stored in the channels modes structure
660 * It is down to the module handling the mode to maintain state and determine what 'items' (e.g. users,
661 * or a banlist) have the mode set on them, and process the modes at the correct times, e.g. during access
662 * checks on channels, etc. When the extended mode is triggered the OnExtendedMode method will be triggered
663 * as above. Note that the target you are given will be a channel, if for example your mode is set 'on a user'
664 * (in for example +a) you must use Server::Find to locate the user the mode is operating on.
665 * Your mode handler may return 1 to handle the mode AND tell the core to display the mode change, e.g.
666 * '+aaa one two three' in the case of the mode for 'two', or it may return -1 to 'eat' the mode change,
667 * so the above example would become '+aa one three' after processing.
669 virtual bool AddExtendedListMode(char modechar);
671 /** Adds a command to the command table.
672 * This allows modules to add extra commands into the command table. You must place a function within your
673 * module which is is of type handlerfunc:
675 * typedef void (handlerfunc) (char**, int, userrec*);
677 * void handle_kill(char **parameters, int pcnt, userrec *user)
679 * When the command is typed, the parameters will be placed into the parameters array (similar to argv) and
680 * the parameter count will be placed into pcnt (similar to argv). There will never be any less parameters
681 * than the 'minparams' value you specified when creating the command. The *user parameter is the class of
682 * the user which caused the command to trigger, who will always have the flag you specified in 'flags' when
683 * creating the initial command. For example to create an oper only command create the commands with flags='o'.
684 * The source parameter is used for resource tracking, and should contain the name of your module (with file
685 * extension) e.g. "m_blarp.so". If you place the wrong identifier here, you can cause crashes if your module
688 virtual void AddCommand(char* cmd, handlerfunc f, char flags, int minparams, char* source);
690 /** Sends a servermode.
691 * you must format the parameters array with the target, modes and parameters for those modes.
697 * modes[0] = ChannelName;
701 * modes[2] = user->nick;
703 * Srv->SendMode(modes,3,user);
705 * The modes will originate from the server where the command was issued, however responses (e.g. numerics)
706 * will be sent to the user you provide as the third parameter.
707 * You must be sure to get the number of parameters correct in the pcnt parameter otherwise you could leave
708 * your server in an unstable state!
711 virtual void SendMode(char **parameters, int pcnt, userrec *user);
713 /** Sends to all users matching a mode mask
714 * You must specify one or more usermodes as the first parameter. These can be RFC specified modes such as +i,
715 * or module provided modes, including ones provided by your own module.
716 * In the second parameter you must place a flag value which indicates wether the modes you have given will be
717 * logically ANDed or OR'ed. You may use one of either WM_AND or WM_OR.
718 * for example, if you were to use:
720 * Serv->SendToModeMask("xi", WM_OR, "m00");
722 * Then the text 'm00' will be sent to all users with EITHER mode x or i. Conversely if you used WM_AND, the
723 * user must have both modes set to receive the message.
725 virtual void SendToModeMask(std::string modes, int flags, std::string text);
727 /** Forces a user to join a channel.
728 * This is similar to svsjoin and can be used to implement redirection, etc.
729 * On success, the return value is a valid pointer to a chanrec* of the channel the user was joined to.
730 * On failure, the result is NULL.
732 virtual chanrec* JoinUserToChannel(userrec* user, std::string cname, std::string key);
734 /** Forces a user to part a channel.
735 * This is similar to svspart and can be used to implement redirection, etc.
736 * Although the return value of this function is a pointer to a channel record, the returned data is
737 * undefined and should not be read or written to. This behaviour may be changed in a future version.
739 virtual chanrec* PartUserFromChannel(userrec* user, std::string cname, std::string reason);
741 /** Forces a user nickchange.
742 * This command works similarly to SVSNICK, and can be used to implement Q-lines etc.
743 * If you specify an invalid nickname, the nick change will be dropped and the target user will receive
744 * the error numeric for it.
746 virtual void ChangeUserNick(userrec* user, std::string nickname);
748 /** Forces a user to quit with the specified reason.
749 * To the user, it will appear as if they typed /QUIT themselves, except for the fact that this function
750 * may bypass the quit prefix specified in the config file.
754 * Once you call this function, userrec* user will immediately become INVALID. You MUST NOT write to, or
755 * read from this pointer after calling the QuitUser method UNDER ANY CIRCUMSTANCES! The best course of
756 * action after calling this method is to immediately bail from your handler.
758 virtual void QuitUser(userrec* user, std::string reason);
760 /** Matches text against a glob pattern.
761 * Uses the ircd's internal matching function to match string against a globbing pattern, e.g. *!*@*.com
762 * Returns true if the literal successfully matches the pattern, false if otherwise.
764 virtual bool MatchText(std::string sliteral, std::string spattern);
766 /** Calls the handler for a command, either implemented by the core or by another module.
767 * You can use this function to trigger other commands in the ircd, such as PRIVMSG, JOIN,
768 * KICK etc, or even as a method of callback. By defining command names that are untypeable
769 * for users on irc (e.g. those which contain a \r or \n) you may use them as callback identifiers.
770 * The first parameter to this method is the name of the command handler you wish to call, e.g.
771 * PRIVMSG. This will be a command handler previously registered by the core or wih AddCommand().
772 * The second parameter is an array of parameters, and the third parameter is a count of parameters
773 * in the array. If you do not pass enough parameters to meet the minimum needed by the handler, the
774 * functiom will silently ignore it. The final parameter is the user executing the command handler,
775 * used for privilage checks, etc.
777 virtual void CallCommandHandler(std::string commandname, char** parameters, int pcnt, userrec* user);
779 /** Change displayed hostname of a user.
780 * You should always call this method to change a user's host rather than writing directly to the
781 * dhost member of userrec, as any change applied via this method will be propogated to any
784 virtual void ChangeHost(userrec* user, std::string host);
786 /** Change GECOS (fullname) of a user.
787 * You should always call this method to change a user's GECOS rather than writing directly to the
788 * fullname member of userrec, as any change applied via this method will be propogated to any
791 virtual void ChangeGECOS(userrec* user, std::string gecos);
793 /** Returns true if the servername you give is ulined.
794 * ULined servers have extra privilages. They are allowed to change nicknames on remote servers,
795 * change modes of clients which are on remote servers and set modes of channels where there are
796 * no channel operators for that channel on the ulined server, amongst other things. Ulined server
797 * data is also broadcast across the mesh at all times as opposed to selectively messaged in the
798 * case of normal servers, as many ulined server types (such as services) do not support meshed
799 * links and must operate in this manner.
801 virtual bool IsUlined(std::string server);
803 /** Fetches the userlist of a channel. This function must be here and not a member of userrec or
804 * chanrec due to include constraints.
806 virtual chanuserlist GetUsers(chanrec* chan);
808 /** Remove a user's connection to the irc server, but leave their client in existence in the
809 * user hash. When you call this function, the user's file descriptor will be replaced with the
810 * value of FD_MAGIC_NUMBER and their old file descriptor will be closed. This idle client will
811 * remain until it is restored with a valid file descriptor, or is removed from IRC by an operator
812 * After this call, the pointer to user will be invalid.
814 virtual bool UserToPseudo(userrec* user,std::string message);
816 /** This user takes one user, and switches their file descriptor with another user, so that one user
817 * "becomes" the other. The user in 'alive' is booted off the server with the given message. The user
818 * referred to by 'zombie' should have previously been locked with Server::ZombifyUser, otherwise
819 * stale sockets and file descriptor leaks can occur. After this call, the pointer to alive will be
820 * invalid, and the pointer to zombie will be equivalent in effect to the old pointer to alive.
822 virtual bool PseudoToUser(userrec* alive,userrec* zombie,std::string message);
825 * The G-line is propogated to all of the servers in the mesh and enforced as soon as it is added.
826 * The duration must be in seconds, however you can use the Server::CalcDuration method to convert
827 * durations into the 1w2d3h3m6s format used by /GLINE etc. The source is an arbitary string used
828 * to indicate who or what sent the data, usually this is the nickname of a person, or a server
831 virtual void AddGLine(long duration, std::string source, std::string reason, std::string hostmask);
834 * The Q-line is propogated to all of the servers in the mesh and enforced as soon as it is added.
835 * The duration must be in seconds, however you can use the Server::CalcDuration method to convert
836 * durations into the 1w2d3h3m6s format used by /GLINE etc. The source is an arbitary string used
837 * to indicate who or what sent the data, usually this is the nickname of a person, or a server
840 virtual void AddQLine(long duration, std::string source, std::string reason, std::string nickname);
843 * The Z-line is propogated to all of the servers in the mesh and enforced as soon as it is added.
844 * The duration must be in seconds, however you can use the Server::CalcDuration method to convert
845 * durations into the 1w2d3h3m6s format used by /GLINE etc. The source is an arbitary string used
846 * to indicate who or what sent the data, usually this is the nickname of a person, or a server
849 virtual void AddZLine(long duration, std::string source, std::string reason, std::string ipaddr);
852 * The K-line is enforced as soon as it is added.
853 * The duration must be in seconds, however you can use the Server::CalcDuration method to convert
854 * durations into the 1w2d3h3m6s format used by /GLINE etc. The source is an arbitary string used
855 * to indicate who or what sent the data, usually this is the nickname of a person, or a server
858 virtual void AddKLine(long duration, std::string source, std::string reason, std::string hostmask);
861 * The E-line is enforced as soon as it is added.
862 * The duration must be in seconds, however you can use the Server::CalcDuration method to convert
863 * durations into the 1w2d3h3m6s format used by /GLINE etc. The source is an arbitary string used
864 * to indicate who or what sent the data, usually this is the nickname of a person, or a server
867 virtual void AddELine(long duration, std::string source, std::string reason, std::string hostmask);
869 /** Deletes a G-Line from all servers on the mesh
871 virtual bool DelGLine(std::string hostmask);
873 /** Deletes a Q-Line from all servers on the mesh
875 virtual bool DelQLine(std::string nickname);
877 /** Deletes a Z-Line from all servers on the mesh
879 virtual bool DelZLine(std::string ipaddr);
881 /** Deletes a local K-Line
883 virtual bool DelKLine(std::string hostmask);
885 /** Deletes a local E-Line
887 virtual bool DelELine(std::string hostmask);
889 /** Calculates a duration
890 * This method will take a string containing a formatted duration (e.g. "1w2d") and return its value
891 * as a total number of seconds. This is the same function used internally by /GLINE etc to set
894 virtual long CalcDuration(std::string duration);
896 /** Returns true if a nick!ident@host string is correctly formatted, false if otherwise.
898 virtual bool IsValidMask(std::string mask);
900 /** Sends a line of text to all connected servers.
901 * If a server is not directly reachable, the core deals with routing the message, and will also
902 * deal with failures transparently.
904 virtual void MeshSendAll(std::string text);
906 /** This method sends a line of text to all servers who have users which share common channels with the user you provide.
907 * For example, if user A is on server A, and they are on channels #one and #two, and user B is on server B, and also on
908 * channel #one, but user C is on server C and on neither #one or #two, this function will cause the text to only be
909 * sent to server B. However, if server B is only reachable via C, it will route it to C (you do not have to worry about
910 * this routing, it is done transparently, but its good to know how things work!)
912 virtual void MeshSendCommon(userrec* user, std::string text);
914 /** This function is equivalent to Server::MeshSendToAll except it will only route to servers which are directly routable.
916 virtual void MeshSendAllAlive(std::string text);
918 /** This function sends a line of text directly to a server.
919 * If the server is not directly routable at this time, the server attempts to route text through the mesh.
921 virtual void MeshSendUnicast(std::string destination, std::string text);
923 /** This function sends to all servers EXCEPT the one you specify.
924 * You should usually use this function to send messages, specifying the SENDER of your message as 'target'.
925 * This will prevent message loops.
927 virtual void MeshSendAllExcept(std::string target, std::string text);
929 /** This function is used to check if any users on channel c are on server servername.
930 * This is used internally by PRIVMSG etc. You should not need to use it.
932 virtual bool MeshCheckChan(chanrec *c,std::string servername);
934 /** This function is used to check if user u has any channels in common with users on servername.
935 * This is used internally by Server::MeshSendCommon. You should very rarely need to use it.
937 virtual bool MeshCheckCommon(userrec* u,std::string servername);
941 #define CONF_NOT_A_NUMBER 0x000010
942 #define CONF_NOT_UNSIGNED 0x000080
943 #define CONF_VALUE_NOT_FOUND 0x000100
944 #define CONF_FILE_NOT_FOUND 0x000200
947 /** Allows reading of values from configuration files
948 * This class allows a module to read from either the main configuration file (inspircd.conf) or from
949 * a module-specified configuration file. It may either be instantiated with one parameter or none.
950 * Constructing the class using one parameter allows you to specify a path to your own configuration
951 * file, otherwise, inspircd.conf is read.
953 class ConfigReader : public classbase
956 /** The contents of the configuration file
957 * This protected member should never be accessed by a module (and cannot be accessed unless the
958 * core is changed). It will contain a pointer to the configuration file data with unneeded data
959 * (such as comments) stripped from it.
961 std::stringstream *cache;
962 std::stringstream *errorlog;
963 /** Used to store errors
969 /** Default constructor.
970 * This constructor initialises the ConfigReader class to read the inspircd.conf file
971 * as specified when running ./configure.
973 ConfigReader(); // default constructor reads ircd.conf
974 /** Overloaded constructor.
975 * This constructor initialises the ConfigReader class to read a user-specified config file
977 ConfigReader(std::string filename); // read a module-specific config
978 /** Default destructor.
979 * This method destroys the ConfigReader class.
982 /** Retrieves a value from the config file.
983 * This method retrieves a value from the config file. Where multiple copies of the tag
984 * exist in the config file, index indicates which of the values to retrieve.
986 std::string ReadValue(std::string tag, std::string name, int index);
987 /** Retrieves a boolean value from the config file.
988 * This method retrieves a boolean value from the config file. Where multiple copies of the tag
989 * exist in the config file, index indicates which of the values to retrieve. The values "1", "yes"
990 * and "true" in the config file count as true to ReadFlag, and any other value counts as false.
992 bool ReadFlag(std::string tag, std::string name, int index);
993 /** Retrieves an integer value from the config file.
994 * This method retrieves an integer value from the config file. Where multiple copies of the tag
995 * exist in the config file, index indicates which of the values to retrieve. Any invalid integer
996 * values in the tag will cause the objects error value to be set, and any call to GetError() will
997 * return CONF_INVALID_NUMBER to be returned. needs_unsigned is set if the number must be unsigned.
998 * If a signed number is placed into a tag which is specified unsigned, 0 will be returned and GetError()
999 * will return CONF_NOT_UNSIGNED
1001 long ReadInteger(std::string tag, std::string name, int index, bool needs_unsigned);
1002 /** Returns the last error to occur.
1003 * Valid errors can be found by looking in modules.h. Any nonzero value indicates an error condition.
1004 * A call to GetError() resets the error flag back to 0.
1007 /** Counts the number of times a given tag appears in the config file.
1008 * This method counts the number of times a tag appears in a config file, for use where
1009 * there are several tags of the same kind, e.g. with opers and connect types. It can be
1010 * used with the index value of ConfigReader::ReadValue to loop through all copies of a
1011 * multiple instance tag.
1013 int Enumerate(std::string tag);
1014 /** Returns true if a config file is valid.
1015 * This method is partially implemented and will only return false if the config
1016 * file does not exist or could not be opened.
1019 /** Dumps the list of errors in a config file to an output location. If bail is true,
1020 * then the program will abort. If bail is false and user points to a valid user
1021 * record, the error report will be spooled to the given user by means of NOTICE.
1022 * if bool is false AND user is false, the error report will be spooled to all opers
1023 * by means of a NOTICE to all opers.
1025 void DumpErrors(bool bail,userrec* user);
1027 /** Returns the number of items within a tag.
1028 * For example if the tag was <test tag="blah" data="foo"> then this
1029 * function would return 2. Spaces and newlines both qualify as valid seperators
1032 int EnumerateValues(std::string tag, int index);
1037 /** Caches a text file into memory and can be used to retrieve lines from it.
1038 * This class contains methods for read-only manipulation of a text file in memory.
1039 * Either use the constructor type with one parameter to load a file into memory
1040 * at construction, or use the LoadFile method to load a file.
1042 class FileReader : public classbase
1046 /** Default constructor.
1047 * This method does not load any file into memory, you must use the LoadFile method
1048 * after constructing the class this way.
1052 /** Secondary constructor.
1053 * This method initialises the class with a file loaded into it ready for GetLine and
1054 * and other methods to be called. If the file could not be loaded, FileReader::FileSize
1057 FileReader(std::string filename);
1059 /** Default destructor.
1060 * This deletes the memory allocated to the file.
1064 /** Used to load a file.
1065 * This method loads a file into the class ready for GetLine and
1066 * and other methods to be called. If the file could not be loaded, FileReader::FileSize
1069 void LoadFile(std::string filename);
1071 /** Returns true if the file exists
1072 * This function will return false if the file could not be opened.
1076 /** Retrieve one line from the file.
1077 * This method retrieves one line from the text file. If an empty non-NULL string is returned,
1078 * the index was out of bounds, or the line had no data on it.
1080 std::string GetLine(int x);
1082 /** Returns the size of the file in lines.
1083 * This method returns the number of lines in the read file. If it is 0, no lines have been
1084 * read into memory, either because the file is empty or it does not exist, or cannot be
1085 * opened due to permission problems.
1091 /** Instantiates classes inherited from Module
1092 * This class creates a class inherited from type Module, using new. This is to allow for modules
1093 * to create many different variants of Module, dependent on architecture, configuration, etc.
1094 * In most cases, the simple class shown in the example module m_foobar.so will suffice for most
1097 class ModuleFactory : public classbase
1101 virtual ~ModuleFactory() { }
1102 /** Creates a new module.
1103 * Your inherited class of ModuleFactory must return a pointer to your Module class
1104 * using this method.
1106 virtual Module * CreateModule() = 0;
1110 typedef DLLFactory<ModuleFactory> ircd_module;