/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2009 Daniel De Graaf * Copyright (C) 2007 Robin Burchell * Copyright (C) 2007 Dennis Friis * Copyright (C) 2003-2007 Craig Edwards * * This file is part of InspIRCd. InspIRCd is free software: you can * redistribute it and/or modify it under the terms of the GNU General Public * License as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #pragma once #include "membership.h" #include "mode.h" /** Holds an entry for a ban list, exemption list, or invite list. * This class contains a single element in a channel list, such as a banlist. */ /** Holds all relevent information for a channel. * This class represents a channel, and contains its name, modes, topic, topic set time, * etc, and an instance of the BanList type. */ class CoreExport Channel : public Extensible, public InviteBase { /** Set default modes for the channel on creation */ void SetDefaultModes(); /** Modes for the channel. * This is not a null terminated string! It is a bitset where * each item in it represents if a mode is set. For example * for mode +A, index 0. Use modechar-65 to calculate which * field to check. */ std::bitset<64> modes; /** Parameters for custom modes. * One for each custom mode letter. */ CustomModeList custom_mode_params; /** Remove the given membership from the channel's internal map of * memberships and destroy the Membership object. * This function does not remove the channel from User::chanlist. * Since the parameter is an iterator to the target, the complexity * of this function is constant. * @param membiter The UserMembIter to remove, must be valid */ void DelUser(const UserMembIter& membiter); public: /** Creates a channel record and initialises it with default values * @param name The name of the channel * @param ts The creation time of the channel * @throw CoreException if this channel name is in use */ Channel(const std::string &name, time_t ts); /** Checks whether the channel should be destroyed, and if yes, begins * the teardown procedure. * * If there are users on the channel or a module vetoes the deletion * (OnPreChannelDelete hook) then nothing else happens. * Otherwise, first the OnChannelDelete event is fired, then the channel is * removed from the channel list. All pending invites are destroyed and * finally the channel is added to the cull list. */ void CheckDestroy(); /** The channel's name. */ std::string name; /** Time that the object was instantiated (used for TS calculation etc) */ time_t age; /** User list. */ UserMembList userlist; /** Channel topic. * If this is an empty string, no channel topic is set. */ std::string topic; /** Time topic was set. * If no topic was ever set, this will be equal to Channel::created */ time_t topicset; /** The last user to set the topic. * If this member is an empty string, no topic was ever set. */ std::string setby; /* 128 */ /** Sets or unsets a custom mode in the channels info * @param mode The mode character to set or unset * @param value True if you want to set the mode or false if you want to remove it */ void SetMode(ModeHandler* mode, bool value); /** Sets or unsets a custom mode in the channels info * @param mode The mode character to set or unset * @param parameter The parameter string to associate with this mode character. * If it is empty, the mode is unset; if it is nonempty, the mode is set. */ void SetModeParam(ModeHandler* mode, const std::string& parameter); /** Returns true if a mode is set on a channel * @param mode The mode character you wish to query * @return True if the custom mode is set, false if otherwise */ inline bool IsModeSet(ModeHandler* mode) { return modes[mode->GetModeChar()-'A']; } bool IsModeSet(ModeHandler& mode) { return IsModeSet(&mode); } bool IsModeSet(ChanModeReference& mode); /** Returns the parameter for a custom mode on a channel. * @param mode The mode character you wish to query * * For example if "+L #foo" is set, and you pass this method * 'L', it will return '\#foo'. If the mode is not set on the * channel, or the mode has no parameters associated with it, * it will return an empty string. * * @return The parameter for this mode is returned, or an empty string */ std::string GetModeParameter(ModeHandler* mode); std::string GetModeParameter(ChanModeReference& mode); /** Sets the channel topic. * @param user The user setting the topic. * @param topic The topic to set it to. */ void SetTopic(User* user, const std::string& topic); /** Obtain the channel "user counter" * This returns the number of users on this channel * * @return The number of users on this channel */ long GetUserCounter() const { return userlist.size(); } /** Add a user pointer to the internal reference list * @param user The user to add * * The data inserted into the reference list is a table as it is * an arbitary pointer compared to other users by its memory address, * as this is a very fast 32 or 64 bit integer comparison. */ Membership* AddUser(User* user); /** Delete a user pointer to the internal reference list * @param user The user to delete * @return number of users left on the channel after deletion of the user */ void DelUser(User* user); /** Obtain the internal reference list * The internal reference list contains a list of User*. * These are used for rapid comparison to determine * channel membership for PRIVMSG, NOTICE, QUIT, PART etc. * The resulting pointer to the vector should be considered * readonly and only modified via AddUser and DelUser. * * @return This function returns pointer to a map of User pointers (CUList*). */ const UserMembList* GetUsers() const { return &userlist; } /** Returns true if the user given is on the given channel. * @param user The user to look for * @return True if the user is on this channel */ bool HasUser(User* user); Membership* GetUser(User* user); /** Make src kick user from this channel with the given reason. * @param src The source of the kick * @param user The user being kicked (must be on this channel) * @param reason The reason for the kick * @param srcmemb The membership of the user who does the kick, can be NULL */ void KickUser(User* src, User* user, const std::string& reason, Membership* srcmemb = NULL); /** Part a user from this channel with the given reason. * If the reason field is NULL, no reason will be sent. * @param user The user who is parting (must be on this channel) * @param reason The part reason */ void PartUser(User *user, std::string &reason); /** Join a local user to a channel, with or without permission checks. May be a channel that doesn't exist yet. * @param user The user to join to the channel. * @param channame The channel name to join to. Does not have to exist. * @param key The key of the channel, if given * @param override If true, override all join restrictions such as +bkil * @return A pointer to the Channel the user was joined to. A new Channel may have * been created if the channel did not exist before the user was joined to it. * If the user could not be joined to a channel, the return value is NULL. */ static Channel* JoinUser(LocalUser* user, std::string channame, bool override = false, const std::string& key = ""); /** Join a user to an existing channel, without doing any permission checks * @param user The user to join to the channel * @param privs Priviliges (prefix mode letters) to give to this user, may be NULL * @param bursting True if this join is the result of a netburst (passed to modules in the OnUserJoin hook) * @param created_by_local True if this channel was just created by a local user (passed to modules in the OnUserJoin hook) */ void ForceJoin(User* user, const std::string* privs = NULL, bool bursting = false, bool created_by_local = false); /** Write to a channel, from a user, using va_args for text * @param user User whos details to prefix the line with * @param text A printf-style format string which builds the output line without prefix * @param ... Zero or more POD types */ void WriteChannel(User* user, const char* text, ...) CUSTOM_PRINTF(3, 4); /** Write to a channel, from a user, using std::string for text * @param user User whos details to prefix the line with * @param text A std::string containing the output line without prefix */ void WriteChannel(User* user, const std::string &text); /** Write to a channel, from a server, using va_args for text * @param ServName Server name to prefix the line with * @param text A printf-style format string which builds the output line without prefix * @param ... Zero or more POD type */ void WriteChannelWithServ(const std::string& ServName, const char* text, ...) CUSTOM_PRINTF(3, 4); /** Write to a channel, from a server, using std::string for text * @param ServName Server name to prefix the line with * @param text A std::string containing the output line without prefix */ void WriteChannelWithServ(const std::string& ServName, const std::string &text); /** Write to all users on a channel except a specific user, using va_args for text. * Internally, this calls WriteAllExcept(). * @param user User whos details to prefix the line with, and to omit from receipt of the message * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise, * use the nick!user\@host of the user. * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone * @param text A printf-style format string which builds the output line without prefix * @param ... Zero or more POD type */ void WriteAllExceptSender(User* user, bool serversource, char status, const char* text, ...) CUSTOM_PRINTF(5, 6); /** Write to all users on a channel except a list of users, using va_args for text * @param user User whos details to prefix the line with, and to omit from receipt of the message * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise, * use the nick!user\@host of the user. * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone * @param except_list A list of users NOT to send the text to * @param text A printf-style format string which builds the output line without prefix * @param ... Zero or more POD type */ void WriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const char* text, ...) CUSTOM_PRINTF(6, 7); /** Write to all users on a channel except a specific user, using std::string for text. * Internally, this calls WriteAllExcept(). * @param user User whos details to prefix the line with, and to omit from receipt of the message * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise, * use the nick!user\@host of the user. * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone * @param text A std::string containing the output line without prefix */ void WriteAllExceptSender(User* user, bool serversource, char status, const std::string& text); /** Write to all users on a channel except a list of users, using std::string for text * @param user User whos details to prefix the line with, and to omit from receipt of the message * @param serversource If this parameter is true, use the local server name as the source of the text, otherwise, * use the nick!user\@host of the user. * @param status The status of the users to write to, e.g. '@' or '%'. Use a value of 0 to write to everyone * @param except_list A list of users NOT to send the text to * @param text A std::string containing the output line without prefix */ void WriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const std::string& text); /** Write a line of text that already includes the source */ void RawWriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const std::string& text); /** Return the channel's modes with parameters. * @param showkey If this is set to true, the actual key is shown, * otherwise it is replaced with '<KEY>' * @return The channel mode string */ const char* ChanModes(bool showkey); /** Spool the NAMES list for this channel to the given user * @param user The user to spool the NAMES list to */ void UserList(User *user); /** Return all of a users mode prefixes into a char* string. * @param user The user to look up * @return A list of all prefix characters. The prefixes will always * be in rank order, greatest first, as certain IRC clients require * this when multiple prefixes are used names lists. */ const char* GetAllPrefixChars(User* user); /** Get the value of a users prefix on this channel. * @param user The user to look up * @return The module or core-defined value of the users prefix. * The values for op, halfop and voice status are constants in * mode.h, and are OP_VALUE, HALFOP_VALUE, and VOICE_VALUE respectively. * If the value you are given does not match one of these three, it is * a module-defined mode, and it should be compared in proportion to * these three constants. For example a value greater than OP_VALUE * is a prefix of greater 'worth' than ops, and a value less than * VOICE_VALUE is of lesser 'worth' than a voice. */ unsigned int GetPrefixValue(User* user); /** Check if a user is banned on this channel * @param user A user to check against the banlist * @returns True if the user given is banned */ bool IsBanned(User* user); /** Check a single ban for match */ bool CheckBan(User* user, const std::string& banmask); /** Get the status of an "action" type extban */ ModResult GetExtBanStatus(User *u, char type); }; inline bool Channel::HasUser(User* user) { return (userlist.find(user) != userlist.end()); } inline std::string Channel::GetModeParameter(ChanModeReference& mode) { if (!mode) return ""; return GetModeParameter(*mode); } inline bool Channel::IsModeSet(ChanModeReference& mode) { if (!mode) return false; return IsModeSet(*mode); }