/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. * E-mail: * * * * Written by Craig Edwards, Craig McLure, and others. * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #ifndef __MODULES_H #define __MODULES_H /** log levels */ enum DebugLevels { DEBUG, VERBOSE, DEFAULT, SPARSE, NONE }; /** Used with OnExtendedMode() method of modules */ enum ModeTargetType { MT_CHANNEL, MT_CLIENT, MT_SERVER }; /** Used with OnAccessCheck() method of modules */ enum AccessControlType { ACR_DEFAULT, // Do default action (act as if the module isnt even loaded) ACR_DENY, // deny the action ACR_ALLOW, // allow the action AC_KICK, // a user is being kicked AC_DEOP, // a user is being deopped AC_OP, // a user is being opped AC_VOICE, // a user is being voiced AC_DEVOICE, // a user is being devoiced AC_HALFOP, // a user is being halfopped AC_DEHALFOP, // a user is being dehalfopped AC_INVITE, // a user is being invited AC_GENERAL_MODE // a channel mode is being changed }; /** Used to define a set of behavior bits for a module */ enum ModuleFlags { VF_STATIC = 1, // module is static, cannot be /unloadmodule'd VF_VENDOR = 2, // module is a vendor module (came in the original tarball, not 3rd party) VF_SERVICEPROVIDER = 4, // module provides a service to other modules (can be a dependency) VF_COMMON = 8 // module needs to be common on all servers in a network to link }; enum WriteModeFlags { WM_AND = 1, WM_OR = 2 }; enum TargetTypeFlags { TYPE_USER = 1, TYPE_CHANNEL, TYPE_SERVER, TYPE_OTHER }; #include "globals.h" #include "dynamic.h" #include "base.h" #include "ctables.h" #include "inspsocket.h" #include #include #include #include #include "timer.h" class Server; class ServerConfig; /** Low level definition of a FileReader classes file cache area */ typedef std::deque file_cache; typedef file_cache string_list; /** Holds a list of users in a channel */ typedef std::deque chanuserlist; /** * This #define allows us to call a method in all * loaded modules in a readable simple way, e.g.: * 'FOREACH_MOD(I_OnXonnwxr,OnConnect(user));' */ #define FOREACH_MOD(y,x) if (Config->global_implementation[y] > 0) { \ for (int _i = 0; _i <= MODCOUNT; _i++) { \ if (Config->implement_lists[_i][y]) \ try \ { \ modules[_i]->x ; \ } \ catch (ModuleException& modexcept) \ { \ log(DEBUG,"Module exception caught: %s",modexcept.GetReason()); \ } \ } \ } /** * This define is similar to the one above but returns a result in MOD_RESULT. * The first module to return a nonzero result is the value to be accepted, * and any modules after are ignored. */ #define FOREACH_RESULT(y,x) { if (Config->global_implementation[y] > 0) { \ MOD_RESULT = 0; \ for (int _i = 0; _i <= MODCOUNT; _i++) { \ if (Config->implement_lists[_i][y]) {\ try \ { \ int res = modules[_i]->x ; \ if (res != 0) { \ MOD_RESULT = res; \ break; \ } \ } \ catch (ModuleException& modexcept) \ { \ log(DEBUG,"Module exception cought: %s",modexcept.GetReason()); \ } \ } \ } \ } \ } #define FD_MAGIC_NUMBER -42 // useful macros #define IS_LOCAL(x) (x->fd > -1) #define IS_REMOTE(x) (x->fd < 0) #define IS_MODULE_CREATED(x) (x->fd == FD_MAGIC_NUMBER) /** Holds a module's Version information * The four members (set by the constructor only) indicate details as to the version number * of a module. A class of type Version is returned by the GetVersion method of the Module class. */ class Version : public classbase { public: const int Major, Minor, Revision, Build, Flags; Version(int major, int minor, int revision, int build, int flags); }; /** Holds /ADMIN data * This class contains the admin details of the local server. It is constructed by class Server, * and has three read-only values, Name, Email and Nick that contain the specified values for the * server where the module is running. */ class Admin : public classbase { public: const std::string Name, Email, Nick; Admin(std::string name, std::string email, std::string nick); }; // Forward-delacare module for ModuleMessage etc class Module; /** The ModuleMessage class is the base class of Request and Event * This class is used to represent a basic data structure which is passed * between modules for safe inter-module communications. */ class ModuleMessage : public classbase { public: /** This class is pure virtual and must be inherited. */ virtual char* Send() = 0; virtual ~ModuleMessage() {}; }; /** The Request class is a unicast message directed at a given module. * When this class is properly instantiated it may be sent to a module * using the Send() method, which will call the given module's OnRequest * method with this class as its parameter. */ class Request : public ModuleMessage { protected: /** This member holds a pointer to arbitary data set by the emitter of the message */ char* data; /** This is a pointer to the sender of the message, which can be used to * directly trigger events, or to create a reply. */ Module* source; /** The single destination of the Request */ Module* dest; public: /** Create a new Request */ Request(char* anydata, Module* src, Module* dst); /** Fetch the Request data */ char* GetData(); /** Fetch the request source */ Module* GetSource(); /** Fetch the request destination (should be 'this' in the receiving module) */ Module* GetDest(); /** Send the Request. * Upon returning the result will be arbitary data returned by the module you * sent the request to. It is up to your module to know what this data is and * how to deal with it. */ char* Send(); }; /** The Event class is a unicast message directed at all modules. * When the class is properly instantiated it may be sent to all modules * using the Send() method, which will trigger the OnEvent method in * all modules passing the object as its parameter. */ class Event : public ModuleMessage { protected: /** This member holds a pointer to arbitary data set by the emitter of the message */ char* data; /** This is a pointer to the sender of the message, which can be used to * directly trigger events, or to create a reply. */ Module* source; /** The event identifier. * This is arbitary text which should be used to distinguish * one type of event from another. */ std::string id; public: /** Create a new Event */ Event(char* anydata, Module* src, const std::string &eventid); /** Get the Event data */ char* GetData(); /** Get the event Source */ Module* GetSource(); /** Get the event ID. * Use this to determine the event type for safe casting of the data */ std::string GetEventID(); /** Send the Event. * The return result of an Event::Send() will always be NULL as * no replies are expected. */ char* Send(); }; /** Holds an extended mode's details. * Used internally by modules.cpp */ class ExtMode : public classbase { public: char modechar; int type; bool needsoper; int params_when_on; int params_when_off; bool list; ExtMode(char mc, int ty, bool oper, int p_on, int p_off) : modechar(mc), type(ty), needsoper(oper), params_when_on(p_on), params_when_off(p_off), list(false) { }; }; /** This class can be used on its own to represent an exception, or derived to represent a module-specific exception. * When a module whishes to abort, e.g. within a constructor, it should throw an exception using ModuleException or * a class derived from ModuleException. If a module throws an exception during its constructor, the module will not * be loaded. If this happens, the error message returned by ModuleException::GetReason will be displayed to the user * attempting to load the module, or dumped to the console if the ircd is currently loading for the first time. */ class ModuleException { private: /** Holds the error message to be displayed */ std::string err; public: /** Default constructor, just uses the error mesage 'Module threw an exception'. */ ModuleException() : err("Module threw an exception") {} /** This constructor can be used to specify an error message before throwing. */ ModuleException(std::string message) : err(message) {} /** This destructor solves world hunger, cancels the world debt, and causes the world to end. * Actually no, it does nothing. Never mind. */ virtual ~ModuleException() {}; /** Returns the reason for the exception. * The module should probably put something informative here as the user will see this upon failure. */ virtual const char* GetReason() { return err.c_str(); } }; /** Priority types which can be returned from Module::Prioritize() */ enum Priority { PRIORITY_FIRST, PRIORITY_DONTCARE, PRIORITY_LAST, PRIORITY_BEFORE, PRIORITY_AFTER }; /** Implementation-specific flags which may be set in Module::Implements() */ enum Implementation { I_OnUserConnect, I_OnUserQuit, I_OnUserDisconnect, I_OnUserJoin, I_OnUserPart, I_OnRehash, I_OnServerRaw, I_OnExtendedMode, I_OnUserPreJoin, I_OnUserPreKick, I_OnUserKick, I_OnOper, I_OnInfo, I_OnWhois, I_OnUserPreInvite, I_OnUserInvite, I_OnUserPreMessage, I_OnUserPreNotice, I_OnUserPreNick, I_OnUserMessage, I_OnUserNotice, I_OnMode, I_OnGetServerDescription, I_OnSyncUser, I_OnSyncChannel, I_OnSyncChannelMetaData, I_OnSyncUserMetaData, I_OnDecodeMetaData, I_ProtoSendMode, I_ProtoSendMetaData, I_OnWallops, I_OnChangeHost, I_OnChangeName, I_OnAddGLine, I_OnAddZLine, I_OnAddQLine, I_OnAddKLine, I_OnAddELine, I_OnDelGLine, I_OnDelZLine, I_OnDelKLine, I_OnDelELine, I_OnDelQLine, I_OnCleanup, I_OnUserPostNick, I_OnAccessCheck, I_On005Numeric, I_OnKill, I_OnRemoteKill, I_OnLoadModule, I_OnUnloadModule, I_OnBackgroundTimer, I_OnSendList, I_OnPreCommand, I_OnCheckReady, I_OnUserRrgister, I_OnRawMode, I_OnCheckInvite, I_OnCheckKey, I_OnCheckLimit, I_OnCheckBan, I_OnStats, I_OnChangeLocalUserHost, I_OnChangeLocalUserGecos, I_OnLocalTopicChange, I_OnPostLocalTopicChange, I_OnEvent, I_OnRequest, I_OnOperCompre, I_OnGlobalOper, I_OnGlobalConnect, I_OnAddBan, I_OnDelBan, I_OnRawSocketAccept, I_OnRawSocketClose, I_OnRawSocketWrite, I_OnRawSocketRead, I_OnChangeLocalUserGECOS, I_OnUserRegister, I_OnOperCompare, I_OnChannelDelete, I_OnPostOper, I_OnSyncOtherMetaData, I_OnSetAway, I_OnCancelAway }; /** Base class for all InspIRCd modules * This class is the base class for InspIRCd modules. All modules must inherit from this class, * its methods will be called when irc server events occur. class inherited from module must be * instantiated by the ModuleFactory class (see relevent section) for the module to be initialised. */ class Module : public classbase { public: /** Default constructor * Creates a module class. * @param Me An instance of the Server class which can be saved for future use * \exception ModuleException Throwing this class, or any class derived from ModuleException, causes loading of the module to abort. */ Module(Server* Me); /** Default destructor * destroys a module class */ virtual ~Module(); /** Returns the version number of a Module. * The method should return a Version object with its version information assigned via * Version::Version */ virtual Version GetVersion(); /** The Implements function specifies which methods a module should receive events for. * The char* parameter passed to this function contains a set of true or false values * (1 or 0) which indicate wether each function is implemented. You must use the Iimplementation * enum (documented elsewhere on this page) to mark functions as active. For example, to * receive events for OnUserJoin(): * * Implements[I_OnUserJoin] = 1; * * @param The implement list */ virtual void Implements(char* Implements); /** Used to set the 'priority' of a module (e.g. when it is called in relation to other modules. * Some modules prefer to be called before other modules, due to their design. For example, a * module which is expected to operate on complete information would expect to be placed last, so * that any other modules which wish to adjust that information would execute before it, to be sure * its information is correct. You can change your module's priority by returning one of: * * PRIORITY_FIRST - To place your module first in the list * * PRIORITY_LAST - To place your module last in the list * * PRIORITY_DONTCARE - To leave your module as it is (this is the default value, if you do not implement this function) * * The result of Server::PriorityBefore() - To move your module before another named module * * The result of Server::PriorityLast() - To move your module after another named module * * For a good working example of this method call, please see src/modules/m_spanningtree.cpp * and src/modules/m_hostchange.so which make use of it. It is highly recommended that unless * your module has a real need to reorder its priority, it should not implement this function, * as many modules changing their priorities can make the system redundant. */ virtual Priority Prioritize(); /** Called when a user connects. * The details of the connecting user are available to you in the parameter userrec *user * @param user The user who is connecting */ virtual void OnUserConnect(userrec* user); /** Called when a user quits. * The details of the exiting user are available to you in the parameter userrec *user * This event is only called when the user is fully registered when they quit. To catch * raw disconnections, use the OnUserDisconnect method. * @param user The user who is quitting * @param message The user's quit message */ virtual void OnUserQuit(userrec* user, const std::string &message); /** Called whenever a user's socket is closed. * The details of the exiting user are available to you in the parameter userrec *user * This event is called for all users, registered or not, as a cleanup method for modules * which might assign resources to user, such as dns lookups, objects and sockets. * @param user The user who is disconnecting */ virtual void OnUserDisconnect(userrec* user); /** Called whenever a channel is deleted, either by QUIT, KICK or PART. * @param chan The channel being deleted */ virtual void OnChannelDelete(chanrec* chan); /** Called when a user joins a channel. * The details of the joining user are available to you in the parameter userrec *user, * and the details of the channel they have joined is available in the variable chanrec *channel * @param user The user who is joining * @param channel The channel being joined */ virtual void OnUserJoin(userrec* user, chanrec* channel); /** Called when a user parts a channel. * The details of the leaving user are available to you in the parameter userrec *user, * and the details of the channel they have left is available in the variable chanrec *channel * @param user The user who is parting * @param channel The channel being parted * @param partmessage The part message, or an empty string */ virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage); /** Called on rehash. * This method is called prior to a /REHASH or when a SIGHUP is received from the operating * system. You should use it to reload any files so that your module keeps in step with the * rest of the application. If a parameter is given, the core has done nothing. The module * receiving the event can decide if this parameter has any relevence to it. * @param parameter The (optional) parameter given to REHASH from the user. */ virtual void OnRehash(const std::string ¶meter); /** Called when a raw command is transmitted or received. * This method is the lowest level of handler available to a module. It will be called with raw * data which is passing through a connected socket. If you wish, you may munge this data by changing * the string parameter "raw". If you do this, after your function exits it will immediately be * cut down to 510 characters plus a carriage return and linefeed. For INBOUND messages only (where * inbound is set to true) the value of user will be the userrec of the connection sending the * data. This is not possible for outbound data because the data may be being routed to multiple targets. * @param raw The raw string in RFC1459 format * @param inbound A flag to indicate wether the data is coming into the daemon or going out to the user * @param user The user record sending the text, when inbound == true. */ virtual void OnServerRaw(std::string &raw, bool inbound, userrec* user); /** Called whenever an extended mode is to be processed. * The type parameter is MT_SERVER, MT_CLIENT or MT_CHANNEL, dependent on where the mode is being * changed. mode_on is set when the mode is being set, in which case params contains a list of * parameters for the mode as strings. If mode_on is false, the mode is being removed, and parameters * may contain the parameters for the mode, dependent on wether they were defined when a mode handler * was set up with Server::AddExtendedMode * If the mode is a channel mode, target is a chanrec*, and if it is a user mode, target is a userrec*. * You must cast this value yourself to make use of it. * @param user The user issuing the mode * @param target The user or channel having the mode set on them * @param modechar The mode character being set * @param type The type of mode (user or channel) being set * @param mode_on True if the mode is being set, false if it is being unset * @param params A list of parameters for any channel mode (currently supports either 0 or 1 parameters) */ virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms); /** Called whenever a user is about to join a channel, before any processing is done. * Returning a value of 1 from this function stops the process immediately, causing no * output to be sent to the user by the core. If you do this you must produce your own numerics, * notices etc. This is useful for modules which may want to mimic +b, +k, +l etc. Returning -1 from * this function forces the join to be allowed, bypassing restrictions such as banlists, invite, keys etc. * * IMPORTANT NOTE! * * If the user joins a NEW channel which does not exist yet, OnUserPreJoin will be called BEFORE the channel * record is created. This will cause chanrec* chan to be NULL. There is very little you can do in form of * processing on the actual channel record at this point, however the channel NAME will still be passed in * char* cname, so that you could for example implement a channel blacklist or whitelist, etc. * @param user The user joining the channel * @param cname The channel name being joined * @return 1 To prevent the join, 0 to allow it. */ virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname); /** Called whenever a user is about to be kicked. * Returning a value of 1 from this function stops the process immediately, causing no * output to be sent to the user by the core. If you do this you must produce your own numerics, * notices etc. * @param source The user issuing the kick * @param user The user being kicked * @param chan The channel the user is being kicked from * @param reason The kick reason * @return 1 to prevent the kick, 0 to continue normally, -1 to explicitly allow the kick regardless of normal operation */ virtual int OnUserPreKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason); /** Called whenever a user is kicked. * If this method is called, the kick is already underway and cannot be prevented, so * to prevent a kick, please use Module::OnUserPreKick instead of this method. * @param source The user issuing the kick * @param user The user being kicked * @param chan The channel the user is being kicked from * @param reason The kick reason */ virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason); /** Called whenever a user opers locally. * The userrec will contain the oper mode 'o' as this function is called after any modifications * are made to the user's structure by the core. * @param user The user who is opering up * @param opertype The opers type name */ virtual void OnOper(userrec* user, const std::string &opertype); /** Called after a user opers locally. * This is identical to Module::OnOper(), except it is called after OnOper so that other modules * can be gauranteed to already have processed the oper-up, for example m_spanningtree has sent * out the OPERTYPE, etc. * @param user The user who is opering up * @param opertype The opers type name */ virtual void OnPostOper(userrec* user, const std::string &opertype); /** Called whenever a user types /INFO. * The userrec will contain the information of the user who typed the command. Modules may use this * method to output their own credits in /INFO (which is the ircd's version of an about box). * It is purposefully not possible to modify any info that has already been output, or halt the list. * You must write a 371 numeric to the user, containing your info in the following format: * * <nick> :information here * * @param user The user issuing /INFO */ virtual void OnInfo(userrec* user); /** Called whenever a /WHOIS is performed on a local user. * The source parameter contains the details of the user who issued the WHOIS command, and * the dest parameter contains the information of the user they are whoising. * @param source The user issuing the WHOIS command * @param dest The user who is being WHOISed */ virtual void OnWhois(userrec* source, userrec* dest); /** Called whenever a user is about to invite another user into a channel, before any processing is done. * Returning 1 from this function stops the process immediately, causing no * output to be sent to the user by the core. If you do this you must produce your own numerics, * notices etc. This is useful for modules which may want to filter invites to channels. * @param source The user who is issuing the INVITE * @param dest The user being invited * @param channel The channel the user is being invited to * @return 1 to deny the invite, 0 to allow */ virtual int OnUserPreInvite(userrec* source,userrec* dest,chanrec* channel); /** Called after a user has been successfully invited to a channel. * You cannot prevent the invite from occuring using this function, to do that, * use OnUserPreInvite instead. * @param source The user who is issuing the INVITE * @param dest The user being invited * @param channel The channel the user is being invited to */ virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel); /** Called whenever a user is about to PRIVMSG A user or a channel, before any processing is done. * Returning any nonzero value from this function stops the process immediately, causing no * output to be sent to the user by the core. If you do this you must produce your own numerics, * notices etc. This is useful for modules which may want to filter or redirect messages. * target_type can be one of TYPE_USER or TYPE_CHANNEL. If the target_type value is a user, * you must cast dest to a userrec* otherwise you must cast it to a chanrec*, this is the details * of where the message is destined to be sent. * @param user The user sending the message * @param dest The target of the message (chanrec* or userrec*) * @param target_type The type of target (TYPE_USER or TYPE_CHANNEL) * @param text Changeable text being sent by the user * @param status The status being used, e.g. PRIVMSG @#chan has status== '@', 0 to send to everyone. * @return 1 to deny the NOTICE, 0 to allow it */ virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text,char status); /** Called whenever a user is about to NOTICE A user or a channel, before any processing is done. * Returning any nonzero value from this function stops the process immediately, causing no * output to be sent to the user by the core. If you do this you must produce your own numerics, * notices etc. This is useful for modules which may want to filter or redirect messages. * target_type can be one of TYPE_USER or TYPE_CHANNEL. If the target_type value is a user, * you must cast dest to a userrec* otherwise you must cast it to a chanrec*, this is the details * of where the message is destined to be sent. * You may alter the message text as you wish before relinquishing control to the next module * in the chain, and if no other modules block the text this altered form of the text will be sent out * to the user and possibly to other servers. * @param user The user sending the message * @param dest The target of the message (chanrec* or userrec*) * @param target_type The type of target (TYPE_USER or TYPE_CHANNEL) * @param text Changeable text being sent by the user * @param status The status being used, e.g. PRIVMSG @#chan has status== '@', 0 to send to everyone. * @return 1 to deny the NOTICE, 0 to allow it */ virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text,char status); /** Called before any nickchange, local or remote. This can be used to implement Q-lines etc. * Please note that although you can see remote nickchanges through this function, you should * NOT make any changes to the userrec if the user is a remote user as this may cause a desnyc. * check user->server before taking any action (including returning nonzero from the method). * If your method returns nonzero, the nickchange is silently forbidden, and it is down to your * module to generate some meaninful output. * @param user The username changing their nick * @param newnick Their new nickname * @return 1 to deny the change, 0 to allow */ virtual int OnUserPreNick(userrec* user, const std::string &newnick); /** Called after any PRIVMSG sent from a user. * The dest variable contains a userrec* if target_type is TYPE_USER and a chanrec* * if target_type is TYPE_CHANNEL. * @param user The user sending the message * @param dest The target of the message * @param target_type The type of target (TYPE_USER or TYPE_CHANNEL) * @param text the text being sent by the user * @param status The status being used, e.g. PRIVMSG @#chan has status== '@', 0 to send to everyone. */ virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status); /** Called after any NOTICE sent from a user. * The dest variable contains a userrec* if target_type is TYPE_USER and a chanrec* * if target_type is TYPE_CHANNEL. * @param user The user sending the message * @param dest The target of the message * @param target_type The type of target (TYPE_USER or TYPE_CHANNEL) * @param text the text being sent by the user * @param status The status being used, e.g. NOTICE @#chan has status== '@', 0 to send to everyone. */ virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status); /** Called after every MODE command sent from a user * The dest variable contains a userrec* if target_type is TYPE_USER and a chanrec* * if target_type is TYPE_CHANNEL. The text variable contains the remainder of the * mode string after the target, e.g. "+wsi" or "+ooo nick1 nick2 nick3". * @param user The user sending the MODEs * @param dest The target of the modes (userrec* or chanrec*) * @param target_type The type of target (TYPE_USER or TYPE_CHANNEL) * @param text The actual modes and their parameters if any */ virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text); /** Allows modules to alter or create server descriptions * Whenever a module requires a server description, for example for display in * WHOIS, this function is called in all modules. You may change or define the * description given in std::string &description. If you do, this description * will be shown in the WHOIS fields. * @param servername The servername being searched for * @param description Alterable server description for this server */ virtual void OnGetServerDescription(const std::string &servername,std::string &description); /** Allows modules to synchronize data which relates to users during a netburst. * When this function is called, it will be called from the module which implements * the linking protocol. This currently is m_spanningtree.so. A pointer to this module * is given in Module* proto, so that you may call its methods such as ProtoSendMode * (see below). This function will be called for every user visible on your side * of the burst, allowing you to for example set modes, etc. Do not use this call to * synchronize data which you have stored using class Extensible -- There is a specialist * function OnSyncUserMetaData and OnSyncChannelMetaData for this! * @param user The user being syncronized * @param proto A pointer to the module handling network protocol * @param opaque An opaque pointer set by the protocol module, should not be modified! */ virtual void OnSyncUser(userrec* user, Module* proto, void* opaque); /** Allows modules to synchronize data which relates to channels during a netburst. * When this function is called, it will be called from the module which implements * the linking protocol. This currently is m_spanningtree.so. A pointer to this module * is given in Module* proto, so that you may call its methods such as ProtoSendMode * (see below). This function will be called for every user visible on your side * of the burst, allowing you to for example set modes, etc. Do not use this call to * synchronize data which you have stored using class Extensible -- There is a specialist * function OnSyncUserMetaData and OnSyncChannelMetaData for this! * * For a good example of how to use this function, please see src/modules/m_chanprotect.cpp * * @param chan The channel being syncronized * @param proto A pointer to the module handling network protocol * @param opaque An opaque pointer set by the protocol module, should not be modified! */ virtual void OnSyncChannel(chanrec* chan, Module* proto, void* opaque); /* Allows modules to syncronize metadata related to channels over the network during a netburst. * Whenever the linking module wants to send out data, but doesnt know what the data * represents (e.g. it is Extensible metadata, added to a userrec or chanrec by a module) then * this method is called.You should use the ProtoSendMetaData function after you've * correctly decided how the data should be represented, to send the metadata on its way if it belongs * to your module. For a good example of how to use this method, see src/modules/m_swhois.cpp. * @param chan The channel whos metadata is being syncronized * @param proto A pointer to the module handling network protocol * @param opaque An opaque pointer set by the protocol module, should not be modified! * @param extname The extensions name which is being searched for */ virtual void OnSyncChannelMetaData(chanrec* chan, Module* proto,void* opaque, const std::string &extname); /* Allows modules to syncronize metadata related to users over the network during a netburst. * Whenever the linking module wants to send out data, but doesnt know what the data * represents (e.g. it is Extensible metadata, added to a userrec or chanrec by a module) then * this method is called. You should use the ProtoSendMetaData function after you've * correctly decided how the data should be represented, to send the metadata on its way if * if it belongs to your module. * @param user The user whos metadata is being syncronized * @param proto A pointer to the module handling network protocol * @param opaque An opaque pointer set by the protocol module, should not be modified! * @param extname The extensions name which is being searched for */ virtual void OnSyncUserMetaData(userrec* user, Module* proto,void* opaque, const std::string &extname); /* Allows modules to syncronize metadata not related to users or channels, over the network during a netburst. * Whenever the linking module wants to send out data, but doesnt know what the data * represents (e.g. it is Extensible metadata, added to a userrec or chanrec by a module) then * this method is called. You should use the ProtoSendMetaData function after you've * correctly decided how the data should be represented, to send the metadata on its way if * if it belongs to your module. * @param proto A pointer to the module handling network protocol * @param opaque An opaque pointer set by the protocol module, should not be modified! */ virtual void OnSyncOtherMetaData(Module* proto, void* opaque); /** Allows module data, sent via ProtoSendMetaData, to be decoded again by a receiving module. * Please see src/modules/m_swhois.cpp for a working example of how to use this method call. * @param target_type The type of item to decode data for, TYPE_USER or TYPE_CHANNEL * @param target The chanrec* or userrec* that data should be added to * @param extname The extension name which is being sent * @param extdata The extension data, encoded at the other end by an identical module through OnSyncChannelMetaData or OnSyncUserMetaData */ virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata); /** Implemented by modules which provide the ability to link servers. * These modules will implement this method, which allows transparent sending of servermodes * down the network link as a broadcast, without a module calling it having to know the format * of the MODE command before the actual mode string. * * More documentation to follow soon. Please see src/modules/m_chanprotect.cpp for examples * of how to use this function. * * @param opaque An opaque pointer set by the protocol module, should not be modified! * @param target_type The type of item to decode data for, TYPE_USER or TYPE_CHANNEL * @param target The chanrec* or userrec* that modes should be sent for * @param modeline The modes and parameters to be sent */ virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline); /** Implemented by modules which provide the ability to link servers. * These modules will implement this method, which allows metadata (extra data added to * user and channel records using class Extensible, Extensible::Extend, etc) to be sent * to other servers on a netburst and decoded at the other end by the same module on a * different server. * * More documentation to follow soon. Please see src/modules/m_swhois.cpp for example of * how to use this function. * @param opaque An opaque pointer set by the protocol module, should not be modified! * @param target_type The type of item to decode data for, TYPE_USER or TYPE_CHANNEL * @param target The chanrec* or userrec* that metadata should be sent for * @param extname The extension name to send metadata for * @param extdata Encoded data for this extension name, which will be encoded at the oppsite end by an identical module using OnDecodeMetaData */ virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata); /** Called after every WALLOPS command. * @param user The user sending the WALLOPS * @param text The content of the WALLOPS message */ virtual void OnWallops(userrec* user, const std::string &text); /** Called whenever a user's hostname is changed. * This event triggers after the host has been set. * @param user The user whos host is being changed * @param newhost The new hostname being set */ virtual void OnChangeHost(userrec* user, const std::string &newhost); /** Called whenever a user's GECOS (realname) is changed. * This event triggers after the name has been set. * @param user The user who's GECOS is being changed * @param gecos The new GECOS being set on the user */ virtual void OnChangeName(userrec* user, const std::string &gecos); /** Called whenever a gline is added by a local user. * This method is triggered after the line is added. * @param duration The duration of the line in seconds * @param source The sender of the line * @param reason The reason text to be displayed * @param hostmask The hostmask to add */ virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask); /** Called whenever a zline is added by a local user. * This method is triggered after the line is added. * @param duration The duration of the line in seconds * @param source The sender of the line * @param reason The reason text to be displayed * @param ipmask The hostmask to add */ virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask); /** Called whenever a kline is added by a local user. * This method is triggered after the line is added. * @param duration The duration of the line in seconds * @param source The sender of the line * @param reason The reason text to be displayed * @param hostmask The hostmask to add */ virtual void OnAddKLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask); /** Called whenever a qline is added by a local user. * This method is triggered after the line is added. * @param duration The duration of the line in seconds * @param source The sender of the line * @param reason The reason text to be displayed * @param nickmask The hostmask to add */ virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask); /** Called whenever a eline is added by a local user. * This method is triggered after the line is added. * @param duration The duration of the line in seconds * @param source The sender of the line * @param reason The reason text to be displayed * @param hostmask The hostmask to add */ virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask); /** Called whenever a gline is deleted. * This method is triggered after the line is deleted. * @param source The user removing the line * @param hostmask The hostmask to delete */ virtual void OnDelGLine(userrec* source, const std::string &hostmask); /** Called whenever a zline is deleted. * This method is triggered after the line is deleted. * @param source The user removing the line * @param hostmask The hostmask to delete */ virtual void OnDelZLine(userrec* source, const std::string &ipmask); /** Called whenever a kline is deleted. * This method is triggered after the line is deleted. * @param source The user removing the line * @param hostmask The hostmask to delete */ virtual void OnDelKLine(userrec* source, const std::string &hostmask); /** Called whenever a qline is deleted. * This method is triggered after the line is deleted. * @param source The user removing the line * @param hostmask The hostmask to delete */ virtual void OnDelQLine(userrec* source, const std::string &nickmask); /** Called whenever a eline is deleted. * This method is triggered after the line is deleted. * @param source The user removing the line * @param hostmask The hostmask to delete */ virtual void OnDelELine(userrec* source, const std::string &hostmask); /** Called before your module is unloaded to clean up Extensibles. * This method is called once for every user and channel on the network, * so that when your module unloads it may clear up any remaining data * in the form of Extensibles added using Extensible::Extend(). * If the target_type variable is TYPE_USER, then void* item refers to * a userrec*, otherwise it refers to a chanrec*. * @param target_type The type of item being cleaned * @param item A pointer to the item's class */ virtual void OnCleanup(int target_type, void* item); /** Called after any nickchange, local or remote. This can be used to track users after nickchanges * have been applied. Please note that although you can see remote nickchanges through this function, you should * NOT make any changes to the userrec if the user is a remote user as this may cause a desnyc. * check user->server before taking any action (including returning nonzero from the method). * Because this method is called after the nickchange is taken place, no return values are possible * to indicate forbidding of the nick change. Use OnUserPreNick for this. * @param user The user changing their nick * @param oldnick The old nickname of the user before the nickchange */ virtual void OnUserPostNick(userrec* user, const std::string &oldnick); /** Called before an action which requires a channel privilage check. * This function is called before many functions which check a users status on a channel, for example * before opping a user, deopping a user, kicking a user, etc. * There are several values for access_type which indicate for what reason access is being checked. * These are:

* AC_KICK (0) - A user is being kicked
* AC_DEOP (1) - a user is being deopped
* AC_OP (2) - a user is being opped
* AC_VOICE (3) - a user is being voiced
* AC_DEVOICE (4) - a user is being devoiced
* AC_HALFOP (5) - a user is being halfopped
* AC_DEHALFOP (6) - a user is being dehalfopped
* AC_INVITE (7) - a user is being invited
* AC_GENERAL_MODE (8) - a user channel mode is being changed

* Upon returning from your function you must return either ACR_DEFAULT, to indicate the module wishes * to do nothing, or ACR_DENY where approprate to deny the action, and ACR_ALLOW where appropriate to allow * the action. Please note that in the case of some access checks (such as AC_GENERAL_MODE) access may be * denied 'upstream' causing other checks such as AC_DEOP to not be reached. Be very careful with use of the * AC_GENERAL_MODE type, as it may inadvertently override the behaviour of other modules. When the access_type * is AC_GENERAL_MODE, the destination of the mode will be NULL (as it has not yet been determined). * @param source The source of the access check * @param dest The destination of the access check * @param channel The channel which is being checked * @param access_type See above */ virtual int OnAccessCheck(userrec* source,userrec* dest,chanrec* channel,int access_type); /** Called when a 005 numeric is about to be output. * The module should modify the 005 numeric if needed to indicate its features. * @param output The 005 string to be modified if neccessary. */ virtual void On005Numeric(std::string &output); /** Called when a client is disconnected by KILL. * If a client is killed by a server, e.g. a nickname collision or protocol error, * source is NULL. * Return 1 from this function to prevent the kill, and 0 from this function to allow * it as normal. If you prevent the kill no output will be sent to the client, it is * down to your module to generate this information. * NOTE: It is NOT advisable to stop kills which originate from servers or remote users. * If you do so youre risking race conditions, desyncs and worse! * @param source The user sending the KILL * @param dest The user being killed * @param reason The kill reason * @return 1 to prevent the kill, 0 to allow */ virtual int OnKill(userrec* source, userrec* dest, const std::string &reason); /** Called when an oper wants to disconnect a remote user via KILL * @param source The user sending the KILL * @param dest The user being killed * @param reason The kill reason */ virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason); /** Called whenever a module is loaded. * mod will contain a pointer to the module, and string will contain its name, * for example m_widgets.so. This function is primary for dependency checking, * your module may decide to enable some extra features if it sees that you have * for example loaded "m_killwidgets.so" with "m_makewidgets.so". It is highly * recommended that modules do *NOT* bail if they cannot satisfy dependencies, * but instead operate under reduced functionality, unless the dependency is * absolutely neccessary (e.g. a module that extends the features of another * module). * @param mod A pointer to the new module * @param name The new module's filename */ virtual void OnLoadModule(Module* mod,const std::string &name); /** Called whenever a module is unloaded. * mod will contain a pointer to the module, and string will contain its name, * for example m_widgets.so. This function is primary for dependency checking, * your module may decide to enable some extra features if it sees that you have * for example loaded "m_killwidgets.so" with "m_makewidgets.so". It is highly * recommended that modules do *NOT* bail if they cannot satisfy dependencies, * but instead operate under reduced functionality, unless the dependency is * absolutely neccessary (e.g. a module that extends the features of another * module). * @param mod Pointer to the module being unloaded (still valid) * @param name The filename of the module being unloaded */ virtual void OnUnloadModule(Module* mod,const std::string &name); /** Called once every five seconds for background processing. * This timer can be used to control timed features. Its period is not accurate * enough to be used as a clock, but it is gauranteed to be called at least once in * any five second period, directly from the main loop of the server. * @param curtime The current timer derived from time(2) */ virtual void OnBackgroundTimer(time_t curtime); /** Called whenever a list is needed for a listmode. * For example, when a /MODE #channel +b (without any other parameters) is called, * if a module was handling +b this function would be called. The function can then * output any lists it wishes to. Please note that all modules will see all mode * characters to provide the ability to extend each other, so please only output * a list if the mode character given matches the one(s) you want to handle. * @param user The user requesting the list * @param channel The channel the list is for * @param mode The listmode which a list is being requested on */ virtual void OnSendList(userrec* user, chanrec* channel, char mode); /** Called whenever any command is about to be executed. * This event occurs for all registered commands, wether they are registered in the core, * or another module, but it will not occur for invalid commands (e.g. ones which do not * exist within the command table). By returning 1 from this method you may prevent the * command being executed. If you do this, no output is created by the core, and it is * down to your module to produce any output neccessary. * Note that unless you return 1, you should not destroy any structures (e.g. by using * Server::QuitUser) otherwise when the command's handler function executes after your * method returns, it will be passed an invalid pointer to the user object and crash!) * @param command The command being executed * @param parameters An array of array of characters containing the parameters for the command * @param pcnt The nuimber of parameters passed to the command * @param user the user issuing the command * @param validated True if the command has passed all checks, e.g. it is recognised, has enough parameters, the user has permission to execute it, etc. * @return 1 to block the command, 0 to allow */ virtual int OnPreCommand(const std::string &command, char **parameters, int pcnt, userrec *user, bool validated); /** Called to check if a user who is connecting can now be allowed to register * If any modules return false for this function, the user is held in the waiting * state until all modules return true. For example a module which implements ident * lookups will continue to return false for a user until their ident lookup is completed. * Note that the registration timeout for a user overrides these checks, if the registration * timeout is reached, the user is disconnected even if modules report that the user is * not ready to connect. * @param user The user to check * @return true to indicate readiness, false if otherwise */ virtual bool OnCheckReady(userrec* user); /** Called whenever a user is about to register their connection (e.g. before the user * is sent the MOTD etc). Modules can use this method if they are performing a function * which must be done before the actual connection is completed (e.g. ident lookups, * dnsbl lookups, etc). * Note that you should NOT delete the user record here by causing a disconnection! * Use OnUserConnect for that instead. * @param user The user registering */ virtual void OnUserRegister(userrec* user); /** Called whenever a mode character is processed. * Return 1 from this function to block the mode character from being processed entirely, * so that you may perform your own code instead. Note that this method allows you to override * modes defined by other modes, but this is NOT RECOMMENDED! * @param user The user who is sending the mode * @param chan The channel the mode is being sent to * @param mode The mode character being set * @param param The parameter for the mode or an empty string * @param adding true of the mode is being added, false if it is being removed * @param pcnt The parameter count for the mode (0 or 1) * @return 1 to deny the mode, 0 to allow */ virtual int OnRawMode(userrec* user, chanrec* chan, char mode, const std::string ¶m, bool adding, int pcnt); /** Called whenever a user joins a channel, to determine if invite checks should go ahead or not. * This method will always be called for each join, wether or not the channel is actually +i, and * determines the outcome of an if statement around the whole section of invite checking code. * return 1 to explicitly allow the join to go ahead or 0 to ignore the event. * @param user The user joining the channel * @param chan The channel being joined * @return 1 to explicitly allow the join, 0 to proceed as normal */ virtual int OnCheckInvite(userrec* user, chanrec* chan); /** Called whenever a user joins a channel, to determine if key checks should go ahead or not. * This method will always be called for each join, wether or not the channel is actually +k, and * determines the outcome of an if statement around the whole section of key checking code. * if the user specified no key, the keygiven string will be a valid but empty value. * return 1 to explicitly allow the join to go ahead or 0 to ignore the event. * @param user The user joining the channel * @param chan The channel being joined * @return 1 to explicitly allow the join, 0 to proceed as normal */ virtual int OnCheckKey(userrec* user, chanrec* chan, const std::string &keygiven); /** Called whenever a user joins a channel, to determine if channel limit checks should go ahead or not. * This method will always be called for each join, wether or not the channel is actually +l, and * determines the outcome of an if statement around the whole section of channel limit checking code. * return 1 to explicitly allow the join to go ahead or 0 to ignore the event. * @param user The user joining the channel * @param chan The channel being joined * @return 1 to explicitly allow the join, 0 to proceed as normal */ virtual int OnCheckLimit(userrec* user, chanrec* chan); /** Called whenever a user joins a channel, to determine if banlist checks should go ahead or not. * This method will always be called for each join, wether or not the user actually matches a channel ban, and * determines the outcome of an if statement around the whole section of ban checking code. * return 1 to explicitly allow the join to go ahead or 0 to ignore the event. * @param user The user joining the channel * @param chan The channel being joined * @return 1 to explicitly allow the join, 0 to proceed as normal */ virtual int OnCheckBan(userrec* user, chanrec* chan); /** Called on all /STATS commands * This method is triggered for all /STATS use, including stats symbols handled by the core. * @param symbol the symbol provided to /STATS * @user the user issuing the /STATS command * @return 1 to block the /STATS from being processed by the core, 0 to allow it */ virtual int OnStats(char symbol, userrec* user); /** Called whenever a change of a local users displayed host is attempted. * Return 1 to deny the host change, or 0 to allow it. * @param user The user whos host will be changed * @param newhost The new hostname * @return 1 to deny the host change, 0 to allow */ virtual int OnChangeLocalUserHost(userrec* user, const std::string &newhost); /** Called whenever a change of a local users GECOS (fullname field) is attempted. * return 1 to deny the name change, or 0 to allow it. * @param user The user whos GECOS will be changed * @param newhost The new GECOS * @return 1 to deny the GECOS change, 0 to allow */ virtual int OnChangeLocalUserGECOS(userrec* user, const std::string &newhost); /** Called whenever a topic is changed by a local user. * Return 1 to deny the topic change, or 0 to allow it. * @param user The user changing the topic * @param chan The channels who's topic is being changed * @param topic The actual topic text * @param 1 to block the topic change, 0 to allow */ virtual int OnLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic); /** Called whenever a local topic has been changed. * To block topic changes you must use OnLocalTopicChange instead. * @param user The user changing the topic * @param chan The channels who's topic is being changed * @param topic The actual topic text */ virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic); /** Called whenever an Event class is sent to all module by another module. * Please see the documentation of Event::Send() for further information. The Event sent can * always be assumed to be non-NULL, you should *always* check the value of Event::GetEventID() * before doing anything to the event data, and you should *not* change the event data in any way! * @param event The Event class being received */ virtual void OnEvent(Event* event); /** Called whenever a Request class is sent to your module by another module. * Please see the documentation of Request::Send() for further information. The Request sent * can always be assumed to be non-NULL, you should not change the request object or its data. * Your method may return arbitary data in the char* result which the requesting module * may be able to use for pre-determined purposes (e.g. the results of an SQL query, etc). * @param request The Request class being received */ virtual char* OnRequest(Request* request); /** Called whenever an oper password is to be compared to what a user has input. * The password field (from the config file) is in 'password' and is to be compared against * 'input'. This method allows for encryption of oper passwords and much more besides. * You should return a nonzero value if you want to allow the comparison or zero if you wish * to do nothing. * @param password The oper's password * @param input The password entered * @return 1 to match the passwords, 0 to do nothing */ virtual int OnOperCompare(const std::string &password, const std::string &input); /** Called whenever a user is given usermode +o, anywhere on the network. * You cannot override this and prevent it from happening as it is already happened and * such a task must be performed by another server. You can however bounce modes by sending * servermodes out to reverse mode changes. * @param user The user who is opering */ virtual void OnGlobalOper(userrec* user); /** Called whenever a user connects, anywhere on the network. * This event is informational only. You should not change any user information in this * event. To do so, use the OnUserConnect method to change the state of local users. * @param user The user who is connecting */ virtual void OnGlobalConnect(userrec* user); /** Called whenever a ban is added to a channel's list. * Return a non-zero value to 'eat' the mode change and prevent the ban from being added. * @param source The user adding the ban * @param channel The channel the ban is being added to * @param banmask The ban mask being added * @return 1 to block the ban, 0 to continue as normal */ virtual int OnAddBan(userrec* source, chanrec* channel,const std::string &banmask); /** Called whenever a ban is removed from a channel's list. * Return a non-zero value to 'eat' the mode change and prevent the ban from being removed. * @param source The user deleting the ban * @param channel The channel the ban is being deleted from * @param banmask The ban mask being deleted * @return 1 to block the unban, 0 to continue as normal */ virtual int OnDelBan(userrec* source, chanrec* channel,const std::string &banmask); /** Called immediately after any connection is accepted. This is intended for raw socket * processing (e.g. modules which wrap the tcp connection within another library) and provides * no information relating to a user record as the connection has not been assigned yet. * There are no return values from this call as all modules get an opportunity if required to * process the connection. * @param fd The file descriptor returned from accept() * @param ip The IP address of the connecting user * @param localport The local port number the user connected to */ virtual void OnRawSocketAccept(int fd, const std::string &ip, int localport); /** Called immediately before any write() operation on a user's socket in the core. Because * this event is a low level event no user information is associated with it. It is intended * for use by modules which may wrap connections within another API such as SSL for example. * return a non-zero result if you have handled the write operation, in which case the core * will not call write(). * @param fd The file descriptor of the socket * @param buffer A char* buffer being written * @param Number of characters to write * @return Number of characters actually written or 0 if you didn't handle the operation */ virtual int OnRawSocketWrite(int fd, char* buffer, int count); /** Called immediately before any socket is closed. When this event is called, shutdown() * has not yet been called on the socket. * @param fd The file descriptor of the socket prior to close() */ virtual void OnRawSocketClose(int fd); /** Called immediately before any read() operation on a client socket in the core. * This occurs AFTER the select() or poll() so there is always data waiting to be read * when this event occurs. * Your event should return 1 if it has handled the reading itself, which prevents the core * just using read(). You should place any data read into buffer, up to but NOT GREATER THAN * the value of count. The value of readresult must be identical to an actual result that might * be returned from the read() system call, for example, number of bytes read upon success, * 0 upon EOF or closed socket, and -1 for error. If your function returns a nonzero value, * you MUST set readresult. * @param fd The file descriptor of the socket * @param buffer A char* buffer being read to * @param count The size of the buffer * @param readresult The amount of characters read, or 0 * @return nonzero if the event was handled, in which case readresult must be valid on exit */ virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult); /** Called whenever a user sets away. * This method has no parameter for the away message, as it is available in the * user record as userrec::awaymsg. */ virtual void OnSetAway(userrec* user); /** Called when a user cancels their away state. */ virtual void OnCancelAway(userrec* user); }; /** Allows server output and query functions * This class contains methods which allow a module to query the state of the irc server, and produce * output to users and other servers. All modules should instantiate at least one copy of this class, * and use its member functions to perform their tasks. */ class Server : public classbase { public: /** Default constructor. * Creates a Server object. */ Server(); /** Default destructor. * Destroys a Server object. */ virtual ~Server(); /** Obtains a pointer to the server's ServerConfig object. * The ServerConfig object contains most of the configuration data * of the IRC server, as read from the config file by the core. */ ServerConfig* GetConfig(); /** For use with Module::Prioritize(). * When the return value of this function is returned from * Module::Prioritize(), this specifies that the module wishes * to be ordered exactly BEFORE 'modulename'. For more information * please see Module::Prioritize(). * @param modulename The module your module wants to be before in the call list * @returns a priority ID which the core uses to relocate the module in the list */ long PriorityBefore(const std::string &modulename); /** For use with Module::Prioritize(). * When the return value of this function is returned from * Module::Prioritize(), this specifies that the module wishes * to be ordered exactly AFTER 'modulename'. For more information please * see Module::Prioritize(). * @param modulename The module your module wants to be after in the call list * @returns a priority ID which the core uses to relocate the module in the list */ long PriorityAfter(const std::string &modulename); /** Sends text to all opers. * This method sends a server notice to all opers with the usermode +s. */ virtual void SendOpers(const std::string &s); /** Returns the version string of this server */ std::string GetVersion(); /** Writes a log string. * This method writes a line of text to the log. If the level given is lower than the * level given in the configuration, this command has no effect. */ virtual void Log(int level, const std::string &s); /** Sends a line of text down a TCP/IP socket. * This method writes a line of text to an established socket, cutting it to 510 characters * plus a carriage return and linefeed if required. */ virtual void Send(int Socket, const std::string &s); /** Sends text from the server to a socket. * This method writes a line of text to an established socket, with the servername prepended * as used by numerics (see RFC 1459) */ virtual void SendServ(int Socket, const std::string &s); /** Writes text to a channel, but from a server, including all. * This can be used to send server notices to a group of users. */ virtual void SendChannelServerNotice(const std::string &ServName, chanrec* Channel, const std::string &text); /** Sends text from a user to a socket. * This method writes a line of text to an established socket, with the given user's nick/ident * /host combination prepended, as used in PRIVSG etc commands (see RFC 1459) */ virtual void SendFrom(int Socket, userrec* User, const std::string &s); /** Sends text from a user to another user. * This method writes a line of text to a user, with a user's nick/ident * /host combination prepended, as used in PRIVMSG etc commands (see RFC 1459) * If you specify NULL as the source, then the data will originate from the * local server, e.g. instead of: * * :user!ident@host TEXT * * The format will become: * * :localserver TEXT * * Which is useful for numerics and server notices to single users, etc. */ virtual void SendTo(userrec* Source, userrec* Dest, const std::string &s); /** Sends text from a user to a channel (mulicast). * This method writes a line of text to a channel, with the given user's nick/ident * /host combination prepended, as used in PRIVMSG etc commands (see RFC 1459). If the * IncludeSender flag is set, then the text is also sent back to the user from which * it originated, as seen in MODE (see RFC 1459). */ virtual void SendChannel(userrec* User, chanrec* Channel, const std::string &s, bool IncludeSender); /** Returns true if two users share a common channel. * This method is used internally by the NICK and QUIT commands, and the Server::SendCommon * method. */ virtual bool CommonChannels(userrec* u1, userrec* u2); /** Sends text from a user to one or more channels (mulicast). * This method writes a line of text to all users which share a common channel with a given * user, with the user's nick/ident/host combination prepended, as used in PRIVMSG etc * commands (see RFC 1459). If the IncludeSender flag is set, then the text is also sent * back to the user from which it originated, as seen in NICK (see RFC 1459). Otherwise, it * is only sent to the other recipients, as seen in QUIT. */ virtual void SendCommon(userrec* User, const std::string &text, bool IncludeSender); /** Sends a WALLOPS message. * This method writes a WALLOPS message to all users with the +w flag, originating from the * specified user. */ virtual void SendWallops(userrec* User, const std::string &text); /** Returns true if a nick is valid. * Nicks for unregistered connections will return false. */ virtual bool IsNick(const std::string &nick); /** Returns a count of the number of users on a channel. * This will NEVER be 0, as if the chanrec exists, it will have at least one user in the channel. */ virtual int CountUsers(chanrec* c); /** Adds an InspTimer which will trigger at a future time */ virtual void AddTimer(InspTimer* T); /** Attempts to look up a nick and return a pointer to it. * This function will return NULL if the nick does not exist. */ virtual userrec* FindNick(const std::string &nick); /** Attempts to look up a nick using the file descriptor associated with that nick. * This function will return NULL if the file descriptor is not associated with a valid user. */ virtual userrec* FindDescriptor(int socket); /** Attempts to look up a channel and return a pointer to it. * This function will return NULL if the channel does not exist. */ virtual chanrec* FindChannel(const std::string &channel); /** Attempts to look up a user's privilages on a channel. * This function will return a string containing either @, %, +, or an empty string, * representing the user's privilages upon the channel you specify. */ virtual std::string ChanMode(userrec* User, chanrec* Chan); /** Returns the server name of the server where the module is loaded. */ virtual std::string GetServerName(); /** Returns the network name, global to all linked servers. */ virtual std::string GetNetworkName(); /** Returns the server description string of the local server */ virtual std::string GetServerDescription(); /** Returns the information of the server as returned by the /ADMIN command. * See the Admin class for further information of the return value. The members * Admin::Nick, Admin::Email and Admin::Name contain the information for the * server where the module is loaded. */ virtual Admin GetAdmin(); /** Adds an extended mode letter which is parsed by a module. * This allows modules to add extra mode letters, e.g. +x for hostcloak. * the "type" parameter is either MT_CHANNEL, MT_CLIENT, or MT_SERVER, to * indicate wether the mode is a channel mode, a client mode, or a server mode. * requires_oper is used with MT_CLIENT type modes only to indicate the mode can only * be set or unset by an oper. If this is used for MT_CHANNEL type modes it is ignored. * params_when_on is the number of modes to expect when the mode is turned on * (for type MT_CHANNEL only), e.g. with mode +k, this would have a value of 1. * the params_when_off value has a similar value to params_when_on, except it indicates * the number of parameters to expect when the mode is disabled. Modes which act in a similar * way to channel mode +l (e.g. require a parameter to enable, but not to disable) should * use this parameter. The function returns false if the mode is unavailable, and will not * attempt to allocate another character, as this will confuse users. This also means that * as only one module can claim a specific mode character, the core does not need to keep track * of which modules own which modes, which speeds up operation of the server. In this version, * a mode can have at most one parameter, attempting to use more parameters will have undefined * effects. */ virtual bool AddExtendedMode(char modechar, int type, bool requires_oper, int params_when_on, int params_when_off); /** Adds an extended mode letter which is parsed by a module and handled in a list fashion. * This call is used to implement modes like +q and +a. The characteristics of these modes are * as follows: * * (1) They are ALWAYS on channels, not on users, therefore their type is MT_CHANNEL * * (2) They always take exactly one parameter when being added or removed * * (3) They can be set multiple times, usually on users in channels * * (4) The mode and its parameter are NOT stored in the channels modes structure * * It is down to the module handling the mode to maintain state and determine what 'items' (e.g. users, * or a banlist) have the mode set on them, and process the modes at the correct times, e.g. during access * checks on channels, etc. When the extended mode is triggered the OnExtendedMode method will be triggered * as above. Note that the target you are given will be a channel, if for example your mode is set 'on a user' * (in for example +a) you must use Server::Find to locate the user the mode is operating on. * Your mode handler may return 1 to handle the mode AND tell the core to display the mode change, e.g. * '+aaa one two three' in the case of the mode for 'two', or it may return -1 to 'eat' the mode change, * so the above example would become '+aa one three' after processing. */ virtual bool AddExtendedListMode(char modechar); /** Adds a command to the command table. * This allows modules to add extra commands into the command table. You must place a function within your * module which is is of type handlerfunc: * * typedef void (handlerfunc) (char**, int, userrec*); * ... * void handle_kill(char **parameters, int pcnt, userrec *user) * * When the command is typed, the parameters will be placed into the parameters array (similar to argv) and * the parameter count will be placed into pcnt (similar to argv). There will never be any less parameters * than the 'minparams' value you specified when creating the command. The *user parameter is the class of * the user which caused the command to trigger, who will always have the flag you specified in 'flags' when * creating the initial command. For example to create an oper only command create the commands with flags='o'. * The source parameter is used for resource tracking, and should contain the name of your module (with file * extension) e.g. "m_blarp.so". If you place the wrong identifier here, you can cause crashes if your module * is unloaded. */ virtual void AddCommand(command_t *f); /** Sends a servermode. * you must format the parameters array with the target, modes and parameters for those modes. * * For example: * * char *modes[3]; * * modes[0] = ChannelName; * * modes[1] = "+o"; * * modes[2] = user->nick; * * Srv->SendMode(modes,3,user); * * The modes will originate from the server where the command was issued, however responses (e.g. numerics) * will be sent to the user you provide as the third parameter. * You must be sure to get the number of parameters correct in the pcnt parameter otherwise you could leave * your server in an unstable state! */ virtual void SendMode(char **parameters, int pcnt, userrec *user); /** Sends to all users matching a mode mask * You must specify one or more usermodes as the first parameter. These can be RFC specified modes such as +i, * or module provided modes, including ones provided by your own module. * In the second parameter you must place a flag value which indicates wether the modes you have given will be * logically ANDed or OR'ed. You may use one of either WM_AND or WM_OR. * for example, if you were to use: * * Serv->SendToModeMask("xi", WM_OR, "m00"); * * Then the text 'm00' will be sent to all users with EITHER mode x or i. Conversely if you used WM_AND, the * user must have both modes set to receive the message. */ virtual void SendToModeMask(const std::string &modes, int flags, const std::string &text); /** Forces a user to join a channel. * This is similar to svsjoin and can be used to implement redirection, etc. * On success, the return value is a valid pointer to a chanrec* of the channel the user was joined to. * On failure, the result is NULL. */ virtual chanrec* JoinUserToChannel(userrec* user, const std::string &cname, const std::string &key); /** Forces a user to part a channel. * This is similar to svspart and can be used to implement redirection, etc. * Although the return value of this function is a pointer to a channel record, the returned data is * undefined and should not be read or written to. This behaviour may be changed in a future version. */ virtual chanrec* PartUserFromChannel(userrec* user, const std::string &cname, const std::string &reason); /** Forces a user nickchange. * This command works similarly to SVSNICK, and can be used to implement Q-lines etc. * If you specify an invalid nickname, the nick change will be dropped and the target user will receive * the error numeric for it. */ virtual void ChangeUserNick(userrec* user, const std::string &nickname); /** Forces a user to quit with the specified reason. * To the user, it will appear as if they typed /QUIT themselves, except for the fact that this function * may bypass the quit prefix specified in the config file. * * WARNING! * * Once you call this function, userrec* user will immediately become INVALID. You MUST NOT write to, or * read from this pointer after calling the QuitUser method UNDER ANY CIRCUMSTANCES! The best course of * action after calling this method is to immediately bail from your handler. */ virtual void QuitUser(userrec* user, const std::string &reason); /** Makes a user kick another user, with the specified reason. * If source is NULL, the server will peform the kick. * @param The person or server (if NULL) performing the KICK * @param target The person being kicked * @param chan The channel to kick from * @param reason The kick reason */ virtual void KickUser(userrec* source, userrec* target, chanrec* chan, const std::string &reason); /** Matches text against a glob pattern. * Uses the ircd's internal matching function to match string against a globbing pattern, e.g. *!*@*.com * Returns true if the literal successfully matches the pattern, false if otherwise. */ virtual bool MatchText(const std::string &sliteral, const std::string &spattern); /** Calls the handler for a command, either implemented by the core or by another module. * You can use this function to trigger other commands in the ircd, such as PRIVMSG, JOIN, * KICK etc, or even as a method of callback. By defining command names that are untypeable * for users on irc (e.g. those which contain a \r or \n) you may use them as callback identifiers. * The first parameter to this method is the name of the command handler you wish to call, e.g. * PRIVMSG. This will be a command handler previously registered by the core or wih AddCommand(). * The second parameter is an array of parameters, and the third parameter is a count of parameters * in the array. If you do not pass enough parameters to meet the minimum needed by the handler, the * functiom will silently ignore it. The final parameter is the user executing the command handler, * used for privilage checks, etc. * @return True if the command exists */ virtual bool CallCommandHandler(const std::string &commandname, char** parameters, int pcnt, userrec* user); /** This function returns true if the commandname exists, pcnt is equal to or greater than the number * of paramters the command requires, the user specified is allowed to execute the command, AND * if the command is implemented by a module (not the core). This has a few specific uses, usually * within network protocols (see src/modules/m_spanningtree.cpp) */ virtual bool IsValidModuleCommand(const std::string &commandname, int pcnt, userrec* user); /** Change displayed hostname of a user. * You should always call this method to change a user's host rather than writing directly to the * dhost member of userrec, as any change applied via this method will be propogated to any * linked servers. */ virtual void ChangeHost(userrec* user, const std::string &host); /** Change GECOS (fullname) of a user. * You should always call this method to change a user's GECOS rather than writing directly to the * fullname member of userrec, as any change applied via this method will be propogated to any * linked servers. */ virtual void ChangeGECOS(userrec* user, const std::string &gecos); /** Returns true if the servername you give is ulined. * ULined servers have extra privilages. They are allowed to change nicknames on remote servers, * change modes of clients which are on remote servers and set modes of channels where there are * no channel operators for that channel on the ulined server, amongst other things. */ virtual bool IsUlined(const std::string &server); /** Fetches the userlist of a channel. This function must be here and not a member of userrec or * chanrec due to include constraints. */ virtual chanuserlist GetUsers(chanrec* chan); /** Remove a user's connection to the irc server, but leave their client in existence in the * user hash. When you call this function, the user's file descriptor will be replaced with the * value of FD_MAGIC_NUMBER and their old file descriptor will be closed. This idle client will * remain until it is restored with a valid file descriptor, or is removed from IRC by an operator * After this call, the pointer to user will be invalid. */ virtual bool UserToPseudo(userrec* user, const std::string &message); /** This user takes one user, and switches their file descriptor with another user, so that one user * "becomes" the other. The user in 'alive' is booted off the server with the given message. The user * referred to by 'zombie' should have previously been locked with Server::UserToPseudo, otherwise * stale sockets and file descriptor leaks can occur. After this call, the pointer to alive will be * invalid, and the pointer to zombie will be equivalent in effect to the old pointer to alive. */ virtual bool PseudoToUser(userrec* alive, userrec* zombie, const std::string &message); /** Adds a G-line * The G-line is propogated to all of the servers in the mesh and enforced as soon as it is added. * The duration must be in seconds, however you can use the Server::CalcDuration method to convert * durations into the 1w2d3h3m6s format used by /GLINE etc. The source is an arbitary string used * to indicate who or what sent the data, usually this is the nickname of a person, or a server * name. */ virtual void AddGLine(long duration, const std::string &source, const std::string &reason, const std::string &hostmask); /** Adds a Q-line * The Q-line is propogated to all of the servers in the mesh and enforced as soon as it is added. * The duration must be in seconds, however you can use the Server::CalcDuration method to convert * durations into the 1w2d3h3m6s format used by /GLINE etc. The source is an arbitary string used * to indicate who or what sent the data, usually this is the nickname of a person, or a server * name. */ virtual void AddQLine(long duration, const std::string &source, const std::string &reason, const std::string &nickname); /** Adds a Z-line * The Z-line is propogated to all of the servers in the mesh and enforced as soon as it is added. * The duration must be in seconds, however you can use the Server::CalcDuration method to convert * durations into the 1w2d3h3m6s format used by /GLINE etc. The source is an arbitary string used * to indicate who or what sent the data, usually this is the nickname of a person, or a server * name. */ virtual void AddZLine(long duration, const std::string &source, const std::string &reason, const std::string &ipaddr); /** Adds a K-line * The K-line is enforced as soon as it is added. * The duration must be in seconds, however you can use the Server::CalcDuration method to convert * durations into the 1w2d3h3m6s format used by /GLINE etc. The source is an arbitary string used * to indicate who or what sent the data, usually this is the nickname of a person, or a server * name. */ virtual void AddKLine(long duration, const std::string &source, const std::string &reason, const std::string &hostmask); /** Adds a E-line * The E-line is enforced as soon as it is added. * The duration must be in seconds, however you can use the Server::CalcDuration method to convert * durations into the 1w2d3h3m6s format used by /GLINE etc. The source is an arbitary string used * to indicate who or what sent the data, usually this is the nickname of a person, or a server * name. */ virtual void AddELine(long duration, const std::string &source, const std::string &reason, const std::string &hostmask); /** Deletes a G-Line from all servers */ virtual bool DelGLine(const std::string &hostmask); /** Deletes a Q-Line from all servers */ virtual bool DelQLine(const std::string &nickname); /** Deletes a Z-Line from all servers */ virtual bool DelZLine(const std::string &ipaddr); /** Deletes a local K-Line */ virtual bool DelKLine(const std::string &hostmask); /** Deletes a local E-Line */ virtual bool DelELine(const std::string &hostmask); /** Calculates a duration * This method will take a string containing a formatted duration (e.g. "1w2d") and return its value * as a total number of seconds. This is the same function used internally by /GLINE etc to set * the ban times. */ virtual long CalcDuration(const std::string &duration); /** Returns true if a nick!ident@host string is correctly formatted, false if otherwise. */ virtual bool IsValidMask(const std::string &mask); /** This function finds a module by name. * You must provide the filename of the module. If the module cannot be found (is not loaded) * the function will return NULL. */ virtual Module* FindModule(const std::string &name); /** Adds a class derived from InspSocket to the server's socket engine. */ virtual void AddSocket(InspSocket* sock); /** Forcibly removes a class derived from InspSocket from the servers socket engine. */ virtual void RemoveSocket(InspSocket* sock); /** Deletes a class derived from InspSocket from the server's socket engine. */ virtual void DelSocket(InspSocket* sock); /** Causes the local server to rehash immediately. * WARNING: Do not call this method from within your rehash method, for * obvious reasons! */ virtual void RehashServer(); /** This method returns the total number of channels on the network. */ virtual long GetChannelCount(); /** This method returns a channel whos index is greater than or equal to 0 and less than the number returned by Server::GetChannelCount(). * This is slower (by factors of dozens) than requesting a channel by name with Server::FindChannel(), however there are times when * you wish to safely iterate the channel list, saving your position, with large amounts of time in between, which is what this function * is useful for. */ virtual chanrec* GetChannelIndex(long index); /** Dumps text (in a stringstream) to a user. The stringstream should not contain linefeeds, as it will be split * automatically by the function into safe amounts. The line prefix given is prepended onto each line (e.g. a servername * and a numeric). */ void DumpText(userrec* User, const std::string &LinePrefix, stringstream &TextStream); }; #define CONF_NOT_A_NUMBER 0x000010 #define CONF_NOT_UNSIGNED 0x000080 #define CONF_VALUE_NOT_FOUND 0x000100 #define CONF_FILE_NOT_FOUND 0x000200 /** Allows reading of values from configuration files * This class allows a module to read from either the main configuration file (inspircd.conf) or from * a module-specified configuration file. It may either be instantiated with one parameter or none. * Constructing the class using one parameter allows you to specify a path to your own configuration * file, otherwise, inspircd.conf is read. */ class ConfigReader : public classbase { protected: /** The contents of the configuration file * This protected member should never be accessed by a module (and cannot be accessed unless the * core is changed). It will contain a pointer to the configuration file data with unneeded data * (such as comments) stripped from it. */ ConfigDataHash* data; std::ostringstream* errorlog;; /** Used to store errors */ bool privatehash; // If we're using our own config data hash or not. bool readerror; long error; public: /** Default constructor. * This constructor initialises the ConfigReader class to read the inspircd.conf file * as specified when running ./configure. */ ConfigReader(); // default constructor reads ircd.conf /** Overloaded constructor. * This constructor initialises the ConfigReader class to read a user-specified config file */ ConfigReader(const std::string &filename); // read a module-specific config /** Default destructor. * This method destroys the ConfigReader class. */ ~ConfigReader(); /** Retrieves a value from the config file. * This method retrieves a value from the config file. Where multiple copies of the tag * exist in the config file, index indicates which of the values to retrieve. */ std::string ReadValue(const std::string &tag, const std::string &name, int index); /** Retrieves a boolean value from the config file. * This method retrieves a boolean value from the config file. Where multiple copies of the tag * exist in the config file, index indicates which of the values to retrieve. The values "1", "yes" * and "true" in the config file count as true to ReadFlag, and any other value counts as false. */ bool ReadFlag(const std::string &tag, const std::string &name, int index); /** Retrieves an integer value from the config file. * This method retrieves an integer value from the config file. Where multiple copies of the tag * exist in the config file, index indicates which of the values to retrieve. Any invalid integer * values in the tag will cause the objects error value to be set, and any call to GetError() will * return CONF_INVALID_NUMBER to be returned. needs_unsigned is set if the number must be unsigned. * If a signed number is placed into a tag which is specified unsigned, 0 will be returned and GetError() * will return CONF_NOT_UNSIGNED */ long ReadInteger(const std::string &tag, const std::string &name, int index, bool needs_unsigned); /** Returns the last error to occur. * Valid errors can be found by looking in modules.h. Any nonzero value indicates an error condition. * A call to GetError() resets the error flag back to 0. */ long GetError(); /** Counts the number of times a given tag appears in the config file. * This method counts the number of times a tag appears in a config file, for use where * there are several tags of the same kind, e.g. with opers and connect types. It can be * used with the index value of ConfigReader::ReadValue to loop through all copies of a * multiple instance tag. */ int Enumerate(const std::string &tag); /** Returns true if a config file is valid. * This method is partially implemented and will only return false if the config * file does not exist or could not be opened. */ bool Verify(); /** Dumps the list of errors in a config file to an output location. If bail is true, * then the program will abort. If bail is false and user points to a valid user * record, the error report will be spooled to the given user by means of NOTICE. * if bool is false AND user is false, the error report will be spooled to all opers * by means of a NOTICE to all opers. */ void DumpErrors(bool bail,userrec* user); /** Returns the number of items within a tag. * For example if the tag was <test tag="blah" data="foo"> then this * function would return 2. Spaces and newlines both qualify as valid seperators * between values. */ int EnumerateValues(const std::string &tag, int index); }; /** Caches a text file into memory and can be used to retrieve lines from it. * This class contains methods for read-only manipulation of a text file in memory. * Either use the constructor type with one parameter to load a file into memory * at construction, or use the LoadFile method to load a file. */ class FileReader : public classbase { /** The file contents */ file_cache fc; public: /** Default constructor. * This method does not load any file into memory, you must use the LoadFile method * after constructing the class this way. */ FileReader(); /** Secondary constructor. * This method initialises the class with a file loaded into it ready for GetLine and * and other methods to be called. If the file could not be loaded, FileReader::FileSize * returns 0. */ FileReader(const std::string &filename); /** Default destructor. * This deletes the memory allocated to the file. */ ~FileReader(); /** Used to load a file. * This method loads a file into the class ready for GetLine and * and other methods to be called. If the file could not be loaded, FileReader::FileSize * returns 0. */ void LoadFile(const std::string &filename); /** Returns true if the file exists * This function will return false if the file could not be opened. */ bool Exists(); /** Retrieve one line from the file. * This method retrieves one line from the text file. If an empty non-NULL string is returned, * the index was out of bounds, or the line had no data on it. */ std::string GetLine(int x); /** Returns the size of the file in lines. * This method returns the number of lines in the read file. If it is 0, no lines have been * read into memory, either because the file is empty or it does not exist, or cannot be * opened due to permission problems. */ int FileSize(); }; /** Instantiates classes inherited from Module * This class creates a class inherited from type Module, using new. This is to allow for modules * to create many different variants of Module, dependent on architecture, configuration, etc. * In most cases, the simple class shown in the example module m_foobar.so will suffice for most * modules. */ class ModuleFactory : public classbase { public: ModuleFactory() { } virtual ~ModuleFactory() { } /** Creates a new module. * Your inherited class of ModuleFactory must return a pointer to your Module class * using this method. */ virtual Module * CreateModule(Server* Me) = 0; }; typedef DLLFactory ircd_module; typedef std::vector ModuleList; typedef std::vector FactoryList; bool ModeDefined(char c, int i); bool ModeDefinedOper(char c, int i); int ModeDefinedOn(char c, int i); int ModeDefinedOff(char c, int i); void ModeMakeList(char modechar); bool ModeIsListMode(char modechar, int type); #endif