1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2009 InspIRCd Development Team
6 * See: http://wiki.inspircd.org/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
14 #ifndef __CHANNELS_H__
15 #define __CHANNELS_H__
17 /** RFC1459 channel modes
20 CM_TOPICLOCK = 't'-65, /* +t: Only operators can change topic */
21 CM_NOEXTERNAL = 'n'-65, /* +n: Only users in the channel can message it */
22 CM_INVITEONLY = 'i'-65, /* +i: Invite only */
23 CM_MODERATED = 'm'-65, /* +m: Only voices and above can talk */
24 CM_SECRET = 's'-65, /* +s: Secret channel */
25 CM_PRIVATE = 'p'-65, /* +p: Private channel */
26 CM_KEY = 'k'-65, /* +k: Keyed channel */
27 CM_LIMIT = 'l'-65 /* +l: Maximum user limit */
30 /* Forward declarations - needed */
33 /** Holds an entry for a ban list, exemption list, or invite list.
34 * This class contains a single element in a channel list, such as a banlist.
36 class HostItem : public classbase
39 /** Time the item was added
42 /** Who added the item
45 /** The actual item data
49 HostItem() { /* stub */ }
50 virtual ~HostItem() { /* stub */ }
53 /** A subclass of HostItem designed to hold channel bans (+b)
55 class BanItem : public HostItem
59 /** Holds a complete ban list
61 typedef std::list<BanItem> BanList;
63 /** A list of users on a channel
65 typedef std::map<User*,std::string> CUList;
67 /** Shorthand for CUList::iterator
69 typedef CUList::iterator CUListIter;
71 /** Shorthand for CUList::const_iterator
73 typedef CUList::const_iterator CUListConstIter;
75 /** A list of custom modes parameters on a channel
77 typedef std::map<char,std::string> CustomModeList;
80 /** used to hold a channel and a users modes on that channel, e.g. +v, +h, +o
82 enum UserChannelModes {
83 UCMODE_OP = 1, /* Opped user */
84 UCMODE_VOICE = 2, /* Voiced user */
85 UCMODE_HOP = 4 /* Halfopped user */
88 /** A stored prefix and its rank
90 typedef std::pair<char, unsigned int> prefixtype;
92 /** A list of prefixes set on a user in a channel
94 typedef std::vector<prefixtype> pfxcontainer;
96 /** A list of users with zero or more prefixes set on them
98 typedef std::map<User*, std::vector<prefixtype> > prefixlist;
100 /** Holds all relevent information for a channel.
101 * This class represents a channel, and contains its name, modes, topic, topic set time,
102 * etc, and an instance of the BanList type.
104 class CoreExport Channel : public Extensible
108 /** Pointer to creator object
110 InspIRCd* ServerInstance;
112 /** Connect a Channel to a User
114 static Channel* ForceChan(InspIRCd* Instance, Channel* Ptr, User* user, const std::string &privs, bool bursting, bool created);
116 /** Set default modes for the channel on creation
118 void SetDefaultModes();
120 /** A list of prefixes associated with each user in the channel
125 /** Maximum number of bans (cached)
130 /** Creates a channel record and initialises it with default values
131 * @throw Nothing at present.
133 Channel(InspIRCd* Instance, const std::string &name, time_t ts);
135 /** The channel's name.
137 std::string name; /* CHANMAX */
139 /** Time that the object was instantiated (used for TS calculation etc)
143 /** Modes for the channel.
144 * This is not a null terminated string! It is a bitset where
145 * each item in it represents if a mode is set. For example
146 * for mode +A, index 0. Use modechar-65 to calculate which
149 std::bitset<64> modes;
152 * There are four user lists, one for
153 * all the users, one for the ops, one for
154 * the halfops and another for the voices.
156 CUList internal_userlist;
159 * There are four user lists, one for
160 * all the users, one for the ops, one for
161 * the halfops and another for the voices.
163 CUList internal_op_userlist;
166 * There are four user lists, one for
167 * all the users, one for the ops, one for
168 * the halfops and another for the voices.
170 CUList internal_halfop_userlist;
173 * There are four user lists, one for
174 * all the users, one for the ops, one for
175 * the halfops and another for the voices.
177 CUList internal_voice_userlist;
179 /** Parameters for custom modes.
180 * One for each custom mode letter.
182 CustomModeList custom_mode_params;
185 * If this is an empty string, no channel topic is set.
187 std::string topic; /* MAXTOPIC */
189 /** Time topic was set.
190 * If no topic was ever set, this will be equal to Channel::created
194 /** The last user to set the topic.
195 * If this member is an empty string, no topic was ever set.
197 std::string setby; /* 128 */
199 /** The list of all bans set on the channel.
203 /** Sets or unsets a custom mode in the channels info
204 * @param mode The mode character to set or unset
205 * @param mode_on True if you want to set the mode or false if you want to remove it
207 void SetMode(char mode,bool mode_on);
209 /** Sets or unsets a custom mode in the channels info
210 * @param mode The mode character to set or unset
211 * @param parameter The parameter string to associate with this mode character.
212 * If it is empty, the mode is unset; if it is nonempty, the mode is set.
214 void SetModeParam(char mode, std::string parameter);
216 /** Returns true if a mode is set on a channel
217 * @param mode The mode character you wish to query
218 * @return True if the custom mode is set, false if otherwise
220 bool IsModeSet(char mode);
222 /** Returns the parameter for a custom mode on a channel.
223 * @param mode The mode character you wish to query
225 * For example if "+L #foo" is set, and you pass this method
226 * 'L', it will return '#foo'. If the mode is not set on the
227 * channel, or the mode has no parameters associated with it,
228 * it will return an empty string.
230 * @return The parameter for this mode is returned, or an empty string
232 std::string GetModeParameter(char mode);
234 /** Sets the channel topic.
235 * @param u The user setting the topic
236 * @param t The topic to set it to. Non-const, as it may be modified by a hook.
237 * @param forceset If set to true then all access checks will be bypassed.
239 int SetTopic(User *u, std::string &t, bool forceset = false);
241 /** Obtain the channel "user counter"
242 * This returns the channel reference counter, which is initialized
243 * to 0 when the channel is created and incremented/decremented
244 * upon joins, parts quits and kicks.
246 * @return The number of users on this channel
248 long GetUserCounter();
250 /** Add a user pointer to the internal reference list
251 * @param user The user to add
253 * The data inserted into the reference list is a table as it is
254 * an arbitary pointer compared to other users by its memory address,
255 * as this is a very fast 32 or 64 bit integer comparison.
257 void AddUser(User* user);
259 /** Add a user pointer to the internal reference list of opped users
260 * @param user The user to add
262 void AddOppedUser(User* user);
264 /** Add a user pointer to the internal reference list of halfopped users
265 * @param user The user to add
267 void AddHalfoppedUser(User* user);
269 /** Add a user pointer to the internal reference list of voiced users
270 * @param user The user to add
272 void AddVoicedUser(User* user);
274 /** Delete a user pointer to the internal reference list
275 * @param user The user to delete
276 * @return number of users left on the channel after deletion of the user
278 unsigned long DelUser(User* user);
280 /** Delete a user pointer to the internal reference list of opped users
281 * @param user The user to delete
283 void DelOppedUser(User* user);
285 /** Delete a user pointer to the internal reference list of halfopped users
286 * @param user The user to delete
288 void DelHalfoppedUser(User* user);
290 /** Delete a user pointer to the internal reference list of voiced users
291 * @param user The user to delete
293 void DelVoicedUser(User* user);
295 /** Obtain the internal reference list
296 * The internal reference list contains a list of User*.
297 * These are used for rapid comparison to determine
298 * channel membership for PRIVMSG, NOTICE, QUIT, PART etc.
299 * The resulting pointer to the vector should be considered
300 * readonly and only modified via AddUser and DelUser.
302 * @return This function returns pointer to a map of User pointers (CUList*).
306 /** Obtain the internal reference list of opped users
307 * @return This function returns pointer to a map of User pointers (CUList*).
309 CUList* GetOppedUsers();
311 /** Obtain the internal reference list of halfopped users
312 * @return This function returns pointer to a map of User pointers (CUList*).
314 CUList* GetHalfoppedUsers();
316 /** Obtain the internal reference list of voiced users
317 * @return This function returns pointer to a map of User pointers (CUList*).
319 CUList* GetVoicedUsers();
321 /** Returns true if the user given is on the given channel.
322 * @param The user to look for
323 * @return True if the user is on this channel
325 bool HasUser(User* user);
327 /** Make src kick user from this channel with the given reason.
328 * @param src The source of the kick
329 * @param user The user being kicked (must be on this channel)
330 * @param reason The reason for the kick
331 * @return The number of users left on the channel. If this is zero
332 * when the method returns, you MUST delete the Channel immediately!
334 long KickUser(User *src, User *user, const char* reason);
336 /** Make the server kick user from this channel with the given reason.
337 * @param user The user being kicked (must be on this channel)
338 * @param reason The reason for the kick
339 * @param triggerevents True if you wish this kick to trigger module events
340 * @return The number of users left on the channel. If this is zero
341 * when the method returns, you MUST delete the Channel immediately!
343 long ServerKickUser(User* user, const char* reason, const char* servername = NULL);
345 /** Part a user from this channel with the given reason.
346 * If the reason field is NULL, no reason will be sent.
347 * @param user The user who is parting (must be on this channel)
348 * @param reason The part reason
349 * @return The number of users left on the channel. If this is zero
350 * when the method returns, you MUST delete the Channel immediately!
352 long PartUser(User *user, std::string &reason);
354 /* Join a user to a channel. May be a channel that doesnt exist yet.
355 * @param user The user to join to the channel.
356 * @param cn The channel name to join to. Does not have to exist.
357 * @param key The key of the channel, if given
358 * @param override If true, override all join restrictions such as +bkil
359 * @return A pointer to the Channel the user was joined to. A new Channel may have
360 * been created if the channel did not exist before the user was joined to it.
361 * If the user could not be joined to a channel, the return value may be NULL.
363 static Channel* JoinUser(InspIRCd* ServerInstance, User *user, const char* cn, bool override, const char* key, bool bursting, time_t TS = 0);
365 /** Write to a channel, from a user, using va_args for text
366 * @param user User whos details to prefix the line with
367 * @param text A printf-style format string which builds the output line without prefix
368 * @param ... Zero or more POD types
370 void WriteChannel(User* user, const char* text, ...) CUSTOM_PRINTF(3, 4);
372 /** Write to a channel, from a user, using std::string for text
373 * @param user User whos details to prefix the line with
374 * @param text A std::string containing the output line without prefix
376 void WriteChannel(User* user, const std::string &text);
378 /** Write to a channel, from a server, using va_args for text
379 * @param ServName Server name to prefix the line with
380 * @param text A printf-style format string which builds the output line without prefix
381 * @param ... Zero or more POD type
383 void WriteChannelWithServ(const char* ServName, const char* text, ...) CUSTOM_PRINTF(3, 4);
385 /** Write to a channel, from a server, using std::string for text
386 * @param ServName Server name to prefix the line with
387 * @param text A std::string containing the output line without prefix
389 void WriteChannelWithServ(const char* ServName, const std::string &text);
391 /** Write to all users on a channel except a specific user, using va_args for text.
392 * Internally, this calls WriteAllExcept().
393 * @param user User whos details to prefix the line with, and to omit from receipt of the message
394 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
395 * use the nick!user@host of the user.
396 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
397 * @param text A printf-style format string which builds the output line without prefix
398 * @param ... Zero or more POD type
400 void WriteAllExceptSender(User* user, bool serversource, char status, const char* text, ...) CUSTOM_PRINTF(5, 6);
402 /** Write to all users on a channel except a list of users, using va_args for text
403 * @param user User whos details to prefix the line with, and to omit from receipt of the message
404 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
405 * use the nick!user@host of the user.
406 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
407 * @param except_list A list of users NOT to send the text to
408 * @param text A printf-style format string which builds the output line without prefix
409 * @param ... Zero or more POD type
411 void WriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const char* text, ...) CUSTOM_PRINTF(6, 7);
413 /** Write to all users on a channel except a specific user, using std::string for text.
414 * Internally, this calls WriteAllExcept().
415 * @param user User whos details to prefix the line with, and to omit from receipt of the message
416 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
417 * use the nick!user@host of the user.
418 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
419 * @param text A std::string containing the output line without prefix
421 void WriteAllExceptSender(User* user, bool serversource, char status, const std::string& text);
423 /** Write to all users on a channel except a list of users, using std::string for text
424 * @param user User whos details to prefix the line with, and to omit from receipt of the message
425 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
426 * use the nick!user@host of the user.
427 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
428 * @param except_list A list of users NOT to send the text to
429 * @param text A std::string containing the output line without prefix
431 void WriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const std::string& text);
432 /** Write a line of text that already includes the source */
433 void RawWriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const std::string& text);
435 /** Returns the maximum number of bans allowed to be set on this channel
436 * @return The maximum number of bans allowed
440 /** Return the channel's modes with parameters.
441 * @param showkey If this is set to true, the actual key is shown,
442 * otherwise it is replaced with '<KEY>'
443 * @return The channel mode string
445 char* ChanModes(bool showkey);
447 /** Spool the NAMES list for this channel to the given user
448 * @param user The user to spool the NAMES list to
449 * @param ulist The user list to send, NULL to use the
450 * channel's default names list of everyone
452 void UserList(User *user, CUList* ulist = NULL);
454 /** Get the number of invisible users on this channel
455 * @return Number of invisible users
457 int CountInvisible();
459 /** Get a users status on this channel
460 * @param user The user to look up
461 * @return One of STATUS_OP, STATUS_HOP, STATUS_VOICE, or zero.
463 int GetStatus(User *user);
465 /** Get a users status on this channel in a bitmask
466 * @param user The user to look up
467 * @return A bitmask containing zero or more of STATUS_OP, STATUS_HOP, STATUS_VOICE
469 int GetStatusFlags(User *user);
471 /** Get a users prefix on this channel in a string.
472 * @param user The user to look up
473 * @return A character array containing the prefix string.
474 * Unlike GetStatus and GetStatusFlags which will only return the
475 * core specified modes @, % and + (op, halfop and voice), GetPrefixChar
476 * will also return module-defined prefixes. If the user has to prefix,
477 * an empty but non-null string is returned. If the user has multiple
478 * prefixes, the highest is returned. If you do not recognise the prefix
479 * character you can get, you can deal with it in a 'proprtional' manner
480 * compared to known prefixes, using GetPrefixValue().
482 const char* GetPrefixChar(User *user);
484 /** Return all of a users mode prefixes into a char* string.
485 * @param user The user to look up
486 * @return A list of all prefix characters. The prefixes will always
487 * be in rank order, greatest first, as certain IRC clients require
488 * this when multiple prefixes are used names lists.
490 const char* GetAllPrefixChars(User* user);
492 /** Get the value of a users prefix on this channel.
493 * @param user The user to look up
494 * @return The module or core-defined value of the users prefix.
495 * The values for op, halfop and voice status are constants in
496 * mode.h, and are OP_VALUE, HALFOP_VALUE, and VOICE_VALUE respectively.
497 * If the value you are given does not match one of these three, it is
498 * a module-defined mode, and it should be compared in proportion to
499 * these three constants. For example a value greater than OP_VALUE
500 * is a prefix of greater 'worth' than ops, and a value less than
501 * VOICE_VALUE is of lesser 'worth' than a voice.
503 unsigned int GetPrefixValue(User* user);
505 /** This method removes all prefix characters from a user.
506 * It will not inform the user or the channel of the removal of prefixes,
507 * and should be used when the user parts or quits.
508 * @param user The user to remove all prefixes from
510 void RemoveAllPrefixes(User* user);
512 /** Add a prefix character to a user.
513 * Only the core should call this method, usually from
514 * within the mode parser or when the first user joins
515 * the channel (to grant ops to them)
516 * @param user The user to associate the privilage with
517 * @param prefix The prefix character to associate
518 * @param prefix_rank The rank (value) of this prefix character
519 * @param adding True if adding the prefix, false when removing
521 void SetPrefix(User* user, char prefix, unsigned int prefix_rank, bool adding);
523 /** Check if a user is banned on this channel
524 * @param user A user to check against the banlist
525 * @returns True if the user given is banned
527 bool IsBanned(User* user);
529 /** Check whether an extban of a given type matches
530 * a given user for this channel.
531 * @param u The user to match bans against
532 * @param type The type of extban to check
533 * @returns 1 = exempt, 0 = no match, -1 = banned
535 int GetExtBanStatus(User *u, char type);
537 /** Overloaded version to check whether a particular string is extbanned
538 * @returns 1 = exempt, 0 = no match, -1 = banned
540 int GetExtBanStatus(const std::string &str, char type);
542 /** Clears the cached max bans value
546 /** Destructor for Channel
548 virtual ~Channel() { /* stub */ }
551 static inline int banmatch_reduce(int v1, int v2)
561 // otherwise v2 > v1 or equal