/* */ #ifndef __PLUGIN_H #define __PLUGIN_H #define DEBUG 10 #define VERBOSE 20 #define DEFAULT 30 #define SPARSE 40 #define NONE 50 #define MT_CHANNEL 1 #define MT_CLIENT 2 #define MT_SERVER 3 #include "dynamic.h" #include "base.h" #include "ctables.h" #include #include /** Low level definition of a FileReader classes file cache area */ typedef std::deque file_cache; typedef file_cache string_list; // This #define allows us to call a method in all // loaded modules in a readable simple way, e.g.: // 'FOREACH_MOD OnConnect(user);' #define FOREACH_MOD for (int i = 0; i <= MODCOUNT; i++) modules[i]-> // 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(x) { MOD_RESULT = 0; \ for (int i = 0; i <= MODCOUNT; i++) { \ int res = modules[i]->x ; \ if (res) { \ MOD_RESULT = res; \ break; \ } \ } \ } // ********************************************************************************************* extern void createcommand(char* cmd, handlerfunc f, char flags, int minparams); extern void server_mode(char **parameters, int pcnt, userrec *user); // class Version holds the version information of a Module, returned // by Module::GetVersion (thanks RD) /** 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; Version(int major, int minor, int revision, int build); }; /** 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); }; /** 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 plugin to be initialised. */ class Module : public classbase { public: /** Default constructor * creates a module class */ Module(); /** 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(); /** Called when a user connects. * The details of the connecting user are available to you in the parameter userrec *user */ 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 */ virtual void OnUserQuit(userrec* user); /** 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 */ 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 */ virtual void OnUserPart(userrec* user, chanrec* channel); /** Called before a packet is transmitted across the irc network between two irc servers. * The packet is represented as a char*, as it should be regarded as a buffer, and not a string. * This allows you to easily represent it in the correct ways to implement encryption, compression, * digital signatures and anything else you may want to add. This should be regarded as a pre-processor * and will be called before ANY other operations within the ircd core program. */ virtual void OnPacketTransmit(char *p); /** Called after a packet is received from another irc server. * The packet is represented as a char*, as it should be regarded as a buffer, and not a string. * This allows you to easily represent it in the correct ways to implement encryption, compression, * digital signatures and anything else you may want to add. This should be regarded as a pre-processor * and will be called immediately after the packet is received but before any other operations with the * core of the ircd. */ virtual void OnPacketReceive(char *p); /** 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. */ virtual void OnRehash(); /** 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. */ virtual void OnServerRaw(std::string &raw, bool inbound); /** 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. */ virtual bool 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 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 mimic +b, +k, +l 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. */ virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname); /** 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. */ virtual void OnOper(userrec* user); /** 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: * * :information here */ 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. */ virtual void Module::OnWhois(userrec* source, userrec* dest); /** 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. */ virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string text); /** 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. */ virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string text); }; /** 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(); /** Sends text to all opers. * This method sends a server notice to all opers with the usermode +s. */ virtual void SendOpers(std::string s); /** 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, 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, 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, std::string s); /** 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, 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) */ virtual void SendTo(userrec* Source, userrec* Dest, 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, 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, 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, std::string text); /** Returns true if a nick is valid. * Nicks for unregistered connections will return false. */ virtual bool IsNick(std::string nick); /** 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(std::string nick); /** 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(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 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 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'. */ virtual void AddCommand(char* cmd, handlerfunc f, char flags, int minparams); /** 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(std::string modes, int flags, 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* Server::JoinUserToChannel(userrec* user, std::string cname, 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* Server::PartUserFromChannel(userrec* user, std::string cname, 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, 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, std::string reason); }; /** 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 filename of the configuration file, as set by the constructor. */ std::string fname; 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(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(std::string tag, std::string name, int index); /** 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(std::string tag); /** Returns true if a config file is valid. * This method is unimplemented and will always return true. */ bool Verify(); }; /** 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 { 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(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(std::string filename); /** 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. */ bool Exists(); 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() = 0; }; typedef DLLFactory ircd_module; #endif