2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
6 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
7 * Copyright (C) 2003-2007 Craig Edwards <craigedwards@brainbox.cc>
9 * This file is part of InspIRCd. InspIRCd is free software: you can
10 * redistribute it and/or modify it under the terms of the GNU General Public
11 * License as published by the Free Software Foundation, version 2.
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
15 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "membership.h"
27 #include "parammode.h"
29 /** Holds an entry for a ban list, exemption list, or invite list.
30 * This class contains a single element in a channel list, such as a banlist.
33 /** Holds all relevent information for a channel.
34 * This class represents a channel, and contains its name, modes, topic, topic set time,
35 * etc, and an instance of the BanList type.
37 class CoreExport Channel : public Extensible, public InviteBase<Channel>
39 /** Set default modes for the channel on creation
41 void SetDefaultModes();
43 /** Modes for the channel.
44 * It is a bitset where each item in it represents if a mode is set.
45 * To see if a mode is set, inspect modes[mh->modeid]
47 std::bitset<ModeParser::MODEID_MAX> modes;
49 /** Remove the given membership from the channel's internal map of
50 * memberships and destroy the Membership object.
51 * This function does not remove the channel from User::chanlist.
52 * Since the parameter is an iterator to the target, the complexity
53 * of this function is constant.
54 * @param membiter The UserMembIter to remove, must be valid
56 void DelUser(const UserMembIter& membiter);
59 /** Creates a channel record and initialises it with default values
60 * @param name The name of the channel
61 * @param ts The creation time of the channel
62 * @throw CoreException if this channel name is in use
64 Channel(const std::string &name, time_t ts);
66 /** Checks whether the channel should be destroyed, and if yes, begins
67 * the teardown procedure.
69 * If there are users on the channel or a module vetoes the deletion
70 * (OnPreChannelDelete hook) then nothing else happens.
71 * Otherwise, first the OnChannelDelete event is fired, then the channel is
72 * removed from the channel list. All pending invites are destroyed and
73 * finally the channel is added to the cull list.
77 /** The channel's name.
81 /** Time that the object was instantiated (used for TS calculation etc)
87 UserMembList userlist;
90 * If this is an empty string, no channel topic is set.
94 /** Time topic was set.
95 * If no topic was ever set, this will be equal to Channel::created
99 /** The last user to set the topic.
100 * If this member is an empty string, no topic was ever set.
102 std::string setby; /* 128 */
104 /** Sets or unsets a custom mode in the channels info
105 * @param mode The mode character to set or unset
106 * @param value True if you want to set the mode or false if you want to remove it
108 void SetMode(ModeHandler* mode, bool value);
110 /** Returns true if a mode is set on a channel
111 * @param mode The mode character you wish to query
112 * @return True if the custom mode is set, false if otherwise
114 bool IsModeSet(ModeHandler* mode) { return ((mode->GetId() != ModeParser::MODEID_MAX) && (modes[mode->GetId()])); }
115 bool IsModeSet(ModeHandler& mode) { return IsModeSet(&mode); }
116 bool IsModeSet(ChanModeReference& mode);
118 /** Returns the parameter for a custom mode on a channel.
119 * @param mode The mode character you wish to query
121 * For example if "+L #foo" is set, and you pass this method
122 * 'L', it will return '\#foo'. If the mode is not set on the
123 * channel, or the mode has no parameters associated with it,
124 * it will return an empty string.
126 * @return The parameter for this mode is returned, or an empty string
128 std::string GetModeParameter(ModeHandler* mode);
129 std::string GetModeParameter(ChanModeReference& mode);
130 std::string GetModeParameter(ParamModeBase* pm);
132 /** Sets the channel topic.
133 * @param user The user setting the topic.
134 * @param topic The topic to set it to.
136 void SetTopic(User* user, const std::string& topic);
138 /** Obtain the channel "user counter"
139 * This returns the number of users on this channel
141 * @return The number of users on this channel
143 long GetUserCounter() const { return userlist.size(); }
145 /** Add a user pointer to the internal reference list
146 * @param user The user to add
148 * The data inserted into the reference list is a table as it is
149 * an arbitary pointer compared to other users by its memory address,
150 * as this is a very fast 32 or 64 bit integer comparison.
152 Membership* AddUser(User* user);
154 /** Delete a user pointer to the internal reference list
155 * @param user The user to delete
156 * @return number of users left on the channel after deletion of the user
158 void DelUser(User* user);
160 /** Obtain the internal reference list
161 * The internal reference list contains a list of User*.
162 * These are used for rapid comparison to determine
163 * channel membership for PRIVMSG, NOTICE, QUIT, PART etc.
164 * The resulting pointer to the vector should be considered
165 * readonly and only modified via AddUser and DelUser.
167 * @return This function returns pointer to a map of User pointers (CUList*).
169 const UserMembList* GetUsers() const { return &userlist; }
171 /** Returns true if the user given is on the given channel.
172 * @param user The user to look for
173 * @return True if the user is on this channel
175 bool HasUser(User* user);
177 Membership* GetUser(User* user);
179 /** Make src kick user from this channel with the given reason.
180 * @param src The source of the kick
181 * @param victimiter Iterator to the user being kicked, must be valid
182 * @param reason The reason for the kick
184 void KickUser(User* src, const UserMembIter& victimiter, const std::string& reason);
186 /** Make src kick user from this channel with the given reason.
187 * @param src The source of the kick
188 * @param user The user being kicked
189 * @param reason The reason for the kick
191 void KickUser(User* src, User* user, const std::string& reason)
193 UserMembIter it = userlist.find(user);
194 if (it != userlist.end())
195 KickUser(src, it, reason);
198 /** Part a user from this channel with the given reason.
199 * If the reason field is NULL, no reason will be sent.
200 * @param user The user who is parting (must be on this channel)
201 * @param reason The part reason
203 void PartUser(User *user, std::string &reason);
205 /** Join a local user to a channel, with or without permission checks. May be a channel that doesn't exist yet.
206 * @param user The user to join to the channel.
207 * @param channame The channel name to join to. Does not have to exist.
208 * @param key The key of the channel, if given
209 * @param override If true, override all join restrictions such as +bkil
210 * @return A pointer to the Channel the user was joined to. A new Channel may have
211 * been created if the channel did not exist before the user was joined to it.
212 * If the user could not be joined to a channel, the return value is NULL.
214 static Channel* JoinUser(LocalUser* user, std::string channame, bool override = false, const std::string& key = "");
216 /** Join a user to an existing channel, without doing any permission checks
217 * @param user The user to join to the channel
218 * @param privs Priviliges (prefix mode letters) to give to this user, may be NULL
219 * @param bursting True if this join is the result of a netburst (passed to modules in the OnUserJoin hook)
220 * @param created_by_local True if this channel was just created by a local user (passed to modules in the OnUserJoin hook)
221 * @return A newly created Membership object, or NULL if the user was already inside the channel or if the user is a server user
223 Membership* ForceJoin(User* user, const std::string* privs = NULL, bool bursting = false, bool created_by_local = false);
225 /** Write to a channel, from a user, using va_args for text
226 * @param user User whos details to prefix the line with
227 * @param text A printf-style format string which builds the output line without prefix
228 * @param ... Zero or more POD types
230 void WriteChannel(User* user, const char* text, ...) CUSTOM_PRINTF(3, 4);
232 /** Write to a channel, from a user, using std::string for text
233 * @param user User whos details to prefix the line with
234 * @param text A std::string containing the output line without prefix
236 void WriteChannel(User* user, const std::string &text);
238 /** Write to a channel, from a server, using va_args for text
239 * @param ServName Server name to prefix the line with
240 * @param text A printf-style format string which builds the output line without prefix
241 * @param ... Zero or more POD type
243 void WriteChannelWithServ(const std::string& ServName, const char* text, ...) CUSTOM_PRINTF(3, 4);
245 /** Write to a channel, from a server, using std::string for text
246 * @param ServName Server name to prefix the line with
247 * @param text A std::string containing the output line without prefix
249 void WriteChannelWithServ(const std::string& ServName, const std::string &text);
251 /** Write to all users on a channel except a specific user, using va_args for text.
252 * Internally, this calls WriteAllExcept().
253 * @param user User whos details to prefix the line with, and to omit from receipt of the message
254 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
255 * use the nick!user\@host of the user.
256 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
257 * @param text A printf-style format string which builds the output line without prefix
258 * @param ... Zero or more POD type
260 void WriteAllExceptSender(User* user, bool serversource, char status, const char* text, ...) CUSTOM_PRINTF(5, 6);
262 /** Write to all users on a channel except a list of users, using va_args for text
263 * @param user User whos details to prefix the line with, and to omit from receipt of the message
264 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
265 * use the nick!user\@host of the user.
266 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
267 * @param except_list A list of users NOT to send the text to
268 * @param text A printf-style format string which builds the output line without prefix
269 * @param ... Zero or more POD type
271 void WriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const char* text, ...) CUSTOM_PRINTF(6, 7);
273 /** Write to all users on a channel except a specific user, using std::string for text.
274 * Internally, this calls WriteAllExcept().
275 * @param user User whos details to prefix the line with, and to omit from receipt of the message
276 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
277 * use the nick!user\@host of the user.
278 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
279 * @param text A std::string containing the output line without prefix
281 void WriteAllExceptSender(User* user, bool serversource, char status, const std::string& text);
283 /** Write to all users on a channel except a list of users, using std::string for text
284 * @param user User whos details to prefix the line with, and to omit from receipt of the message
285 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
286 * use the nick!user\@host of the user.
287 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
288 * @param except_list A list of users NOT to send the text to
289 * @param text A std::string containing the output line without prefix
291 void WriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const std::string& text);
292 /** Write a line of text that already includes the source */
293 void RawWriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const std::string& text);
295 /** Return the channel's modes with parameters.
296 * @param showkey If this is set to true, the actual key is shown,
297 * otherwise it is replaced with '<KEY>'
298 * @return The channel mode string
300 const char* ChanModes(bool showkey);
302 /** Spool the NAMES list for this channel to the given user
303 * @param user The user to spool the NAMES list to
304 * @param isinside If true, the user is inside the channel, if not then false
306 void UserList(User* user, bool isinside = true);
308 /** Get the value of a users prefix on this channel.
309 * @param user The user to look up
310 * @return The module or core-defined value of the users prefix.
311 * The values for op, halfop and voice status are constants in
312 * mode.h, and are OP_VALUE, HALFOP_VALUE, and VOICE_VALUE respectively.
313 * If the value you are given does not match one of these three, it is
314 * a module-defined mode, and it should be compared in proportion to
315 * these three constants. For example a value greater than OP_VALUE
316 * is a prefix of greater 'worth' than ops, and a value less than
317 * VOICE_VALUE is of lesser 'worth' than a voice.
319 unsigned int GetPrefixValue(User* user);
321 /** Check if a user is banned on this channel
322 * @param user A user to check against the banlist
323 * @returns True if the user given is banned
325 bool IsBanned(User* user);
327 /** Check a single ban for match
329 bool CheckBan(User* user, const std::string& banmask);
331 /** Get the status of an "action" type extban
333 ModResult GetExtBanStatus(User *u, char type);
336 inline bool Channel::HasUser(User* user)
338 return (userlist.find(user) != userlist.end());
341 inline std::string Channel::GetModeParameter(ChanModeReference& mode)
345 return GetModeParameter(*mode);
348 inline std::string Channel::GetModeParameter(ModeHandler* mh)
351 ParamModeBase* pm = mh->IsParameterMode();
352 if (pm && this->IsModeSet(pm))
353 pm->GetParameter(this, out);
357 inline std::string Channel::GetModeParameter(ParamModeBase* pm)
360 if (this->IsModeSet(pm))
361 pm->GetParameter(this, out);
365 inline bool Channel::IsModeSet(ChanModeReference& mode)
369 return IsModeSet(*mode);