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 * This is not a null terminated string! It is a bitset where
45 * each item in it represents if a mode is set. For example
46 * for mode +A, index 0. Use modechar-65 to calculate which
49 std::bitset<64> modes;
51 /** Remove the given membership from the channel's internal map of
52 * memberships and destroy the Membership object.
53 * This function does not remove the channel from User::chanlist.
54 * Since the parameter is an iterator to the target, the complexity
55 * of this function is constant.
56 * @param membiter The UserMembIter to remove, must be valid
58 void DelUser(const UserMembIter& membiter);
61 /** Creates a channel record and initialises it with default values
62 * @param name The name of the channel
63 * @param ts The creation time of the channel
64 * @throw CoreException if this channel name is in use
66 Channel(const std::string &name, time_t ts);
68 /** Checks whether the channel should be destroyed, and if yes, begins
69 * the teardown procedure.
71 * If there are users on the channel or a module vetoes the deletion
72 * (OnPreChannelDelete hook) then nothing else happens.
73 * Otherwise, first the OnChannelDelete event is fired, then the channel is
74 * removed from the channel list. All pending invites are destroyed and
75 * finally the channel is added to the cull list.
79 /** The channel's name.
83 /** Time that the object was instantiated (used for TS calculation etc)
89 UserMembList userlist;
92 * If this is an empty string, no channel topic is set.
96 /** Time topic was set.
97 * If no topic was ever set, this will be equal to Channel::created
101 /** The last user to set the topic.
102 * If this member is an empty string, no topic was ever set.
104 std::string setby; /* 128 */
106 /** Sets or unsets a custom mode in the channels info
107 * @param mode The mode character to set or unset
108 * @param value True if you want to set the mode or false if you want to remove it
110 void SetMode(ModeHandler* mode, bool value);
112 /** Returns true if a mode is set on a channel
113 * @param mode The mode character you wish to query
114 * @return True if the custom mode is set, false if otherwise
116 inline bool IsModeSet(ModeHandler* mode) { return modes[mode->GetModeChar()-'A']; }
117 bool IsModeSet(ModeHandler& mode) { return IsModeSet(&mode); }
118 bool IsModeSet(ChanModeReference& mode);
120 /** Returns the parameter for a custom mode on a channel.
121 * @param mode The mode character you wish to query
123 * For example if "+L #foo" is set, and you pass this method
124 * 'L', it will return '\#foo'. If the mode is not set on the
125 * channel, or the mode has no parameters associated with it,
126 * it will return an empty string.
128 * @return The parameter for this mode is returned, or an empty string
130 std::string GetModeParameter(ModeHandler* mode);
131 std::string GetModeParameter(ChanModeReference& mode);
132 std::string GetModeParameter(ParamModeBase* pm);
134 /** Sets the channel topic.
135 * @param user The user setting the topic.
136 * @param topic The topic to set it to.
138 void SetTopic(User* user, const std::string& topic);
140 /** Obtain the channel "user counter"
141 * This returns the number of users on this channel
143 * @return The number of users on this channel
145 long GetUserCounter() const { return userlist.size(); }
147 /** Add a user pointer to the internal reference list
148 * @param user The user to add
150 * The data inserted into the reference list is a table as it is
151 * an arbitary pointer compared to other users by its memory address,
152 * as this is a very fast 32 or 64 bit integer comparison.
154 Membership* AddUser(User* user);
156 /** Delete a user pointer to the internal reference list
157 * @param user The user to delete
158 * @return number of users left on the channel after deletion of the user
160 void DelUser(User* user);
162 /** Obtain the internal reference list
163 * The internal reference list contains a list of User*.
164 * These are used for rapid comparison to determine
165 * channel membership for PRIVMSG, NOTICE, QUIT, PART etc.
166 * The resulting pointer to the vector should be considered
167 * readonly and only modified via AddUser and DelUser.
169 * @return This function returns pointer to a map of User pointers (CUList*).
171 const UserMembList* GetUsers() const { return &userlist; }
173 /** Returns true if the user given is on the given channel.
174 * @param user The user to look for
175 * @return True if the user is on this channel
177 bool HasUser(User* user);
179 Membership* GetUser(User* user);
181 /** Make src kick user from this channel with the given reason.
182 * @param src The source of the kick
183 * @param user The user being kicked (must be on this channel)
184 * @param reason The reason for the kick
185 * @param srcmemb The membership of the user who does the kick, can be NULL
187 void KickUser(User* src, User* user, const std::string& reason, Membership* srcmemb = NULL);
189 /** Part a user from this channel with the given reason.
190 * If the reason field is NULL, no reason will be sent.
191 * @param user The user who is parting (must be on this channel)
192 * @param reason The part reason
194 void PartUser(User *user, std::string &reason);
196 /** Join a local user to a channel, with or without permission checks. May be a channel that doesn't exist yet.
197 * @param user The user to join to the channel.
198 * @param channame The channel name to join to. Does not have to exist.
199 * @param key The key of the channel, if given
200 * @param override If true, override all join restrictions such as +bkil
201 * @return A pointer to the Channel the user was joined to. A new Channel may have
202 * been created if the channel did not exist before the user was joined to it.
203 * If the user could not be joined to a channel, the return value is NULL.
205 static Channel* JoinUser(LocalUser* user, std::string channame, bool override = false, const std::string& key = "");
207 /** Join a user to an existing channel, without doing any permission checks
208 * @param user The user to join to the channel
209 * @param privs Priviliges (prefix mode letters) to give to this user, may be NULL
210 * @param bursting True if this join is the result of a netburst (passed to modules in the OnUserJoin hook)
211 * @param created_by_local True if this channel was just created by a local user (passed to modules in the OnUserJoin hook)
213 void ForceJoin(User* user, const std::string* privs = NULL, bool bursting = false, bool created_by_local = false);
215 /** Write to a channel, from a user, using va_args for text
216 * @param user User whos details to prefix the line with
217 * @param text A printf-style format string which builds the output line without prefix
218 * @param ... Zero or more POD types
220 void WriteChannel(User* user, const char* text, ...) CUSTOM_PRINTF(3, 4);
222 /** Write to a channel, from a user, using std::string for text
223 * @param user User whos details to prefix the line with
224 * @param text A std::string containing the output line without prefix
226 void WriteChannel(User* user, const std::string &text);
228 /** Write to a channel, from a server, using va_args for text
229 * @param ServName Server name to prefix the line with
230 * @param text A printf-style format string which builds the output line without prefix
231 * @param ... Zero or more POD type
233 void WriteChannelWithServ(const std::string& ServName, const char* text, ...) CUSTOM_PRINTF(3, 4);
235 /** Write to a channel, from a server, using std::string for text
236 * @param ServName Server name to prefix the line with
237 * @param text A std::string containing the output line without prefix
239 void WriteChannelWithServ(const std::string& ServName, const std::string &text);
241 /** Write to all users on a channel except a specific user, using va_args for text.
242 * Internally, this calls WriteAllExcept().
243 * @param user User whos details to prefix the line with, and to omit from receipt of the message
244 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
245 * use the nick!user\@host of the user.
246 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
247 * @param text A printf-style format string which builds the output line without prefix
248 * @param ... Zero or more POD type
250 void WriteAllExceptSender(User* user, bool serversource, char status, const char* text, ...) CUSTOM_PRINTF(5, 6);
252 /** Write to all users on a channel except a list of users, using va_args for text
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 except_list A list of users NOT to send the text to
258 * @param text A printf-style format string which builds the output line without prefix
259 * @param ... Zero or more POD type
261 void WriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const char* text, ...) CUSTOM_PRINTF(6, 7);
263 /** Write to all users on a channel except a specific user, using std::string for text.
264 * Internally, this calls WriteAllExcept().
265 * @param user User whos details to prefix the line with, and to omit from receipt of the message
266 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
267 * use the nick!user\@host of the user.
268 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
269 * @param text A std::string containing the output line without prefix
271 void WriteAllExceptSender(User* user, bool serversource, char status, const std::string& text);
273 /** Write to all users on a channel except a list of users, using std::string for text
274 * @param user User whos details to prefix the line with, and to omit from receipt of the message
275 * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise,
276 * use the nick!user\@host of the user.
277 * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone
278 * @param except_list A list of users NOT to send the text to
279 * @param text A std::string containing the output line without prefix
281 void WriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const std::string& text);
282 /** Write a line of text that already includes the source */
283 void RawWriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const std::string& text);
285 /** Return the channel's modes with parameters.
286 * @param showkey If this is set to true, the actual key is shown,
287 * otherwise it is replaced with '<KEY>'
288 * @return The channel mode string
290 const char* ChanModes(bool showkey);
292 /** Spool the NAMES list for this channel to the given user
293 * @param user The user to spool the NAMES list to
295 void UserList(User *user);
297 /** Get the value of a users prefix on this channel.
298 * @param user The user to look up
299 * @return The module or core-defined value of the users prefix.
300 * The values for op, halfop and voice status are constants in
301 * mode.h, and are OP_VALUE, HALFOP_VALUE, and VOICE_VALUE respectively.
302 * If the value you are given does not match one of these three, it is
303 * a module-defined mode, and it should be compared in proportion to
304 * these three constants. For example a value greater than OP_VALUE
305 * is a prefix of greater 'worth' than ops, and a value less than
306 * VOICE_VALUE is of lesser 'worth' than a voice.
308 unsigned int GetPrefixValue(User* user);
310 /** Check if a user is banned on this channel
311 * @param user A user to check against the banlist
312 * @returns True if the user given is banned
314 bool IsBanned(User* user);
316 /** Check a single ban for match
318 bool CheckBan(User* user, const std::string& banmask);
320 /** Get the status of an "action" type extban
322 ModResult GetExtBanStatus(User *u, char type);
325 inline bool Channel::HasUser(User* user)
327 return (userlist.find(user) != userlist.end());
330 inline std::string Channel::GetModeParameter(ChanModeReference& mode)
334 return GetModeParameter(*mode);
337 inline std::string Channel::GetModeParameter(ModeHandler* mh)
340 ParamModeBase* pm = mh->IsParameterMode();
341 if (pm && this->IsModeSet(pm))
342 pm->GetParameter(this, out);
346 inline std::string Channel::GetModeParameter(ParamModeBase* pm)
349 if (this->IsModeSet(pm))
350 pm->GetParameter(this, out);
354 inline bool Channel::IsModeSet(ChanModeReference& mode)
358 return IsModeSet(*mode);