/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #ifndef __COMMAND_PARSE_H #define __COMMAND_PARSE_H #include #include "users.h" #include "ctables.h" #include "typedefs.h" class InspIRCd; typedef std::map SharedObjectList; /** This class handles command management and parsing. * It allows you to add and remove commands from the map, * call command handlers by name, and chop up comma seperated * parameters into multiple calls. */ class CommandParser : public classbase { private: /** The creator of this class */ InspIRCd* ServerInstance; /** Parameter buffer */ std::vector para; /** Process a parameter string into a list of items * @param command_p The output list of items * @param parameters The input string * @return The number of parameters parsed into command_p */ int ProcessParameters(char **command_p,char *parameters); /** Process a command from a user. * @param user The user to parse the command for * @param cmd The command string to process */ void ProcessCommand(userrec *user, std::string &cmd); /** Insert the default RFC1459 commands into the command hash. */ void SetupCommandTable(); /** Finds the init_command symbol in a .so file * @param v A function pointer to be initialized * @param h A valid shared object handle * @return True if the symbol could be found */ bool FindSym(void** v, void* h); /** A list of core-implemented modes and their shared object handles */ SharedObjectList RFCCommands; /** Load a command from a shared object on disk. * @param name The shared object to load (without path) */ void LoadCommand(const char* name); /** Removes a command if the sources match. Used as a helper for * safe hash_map delete while iter in RemoveCommands(const char* source). */ void RemoveCommand(nspace::hash_map::iterator safei, const char* source); public: /** Command list, a hash_map of command names to command_t* */ command_table cmdlist; /** Reload a core command. * This will only reload commands implemented by the core, * to reload a modular command, you must reload that module. * @param cmd The command to reload. This will cause the shared * object which implements this command to be closed, and then reloaded. * @return True if the command was reloaded, false if it could not be found * or another error occured */ bool ReloadCommand(const char* cmd); /** Default constructor. * @param Instance The creator of this class */ CommandParser(InspIRCd* Instance); /** Calls the handler for a given command. * @param commandname The command to find. This should be in uppercase. * @param parameters Parameter list as an array of array of char (that's not a typo). * @param pcnt The number of items in the parameters list * @param user The user to call the handler on behalf of * @return This method will return CMD_SUCCESS if the command handler was found and called, * and the command completeld successfully. It will return CMD_FAILURE if the command handler was found * and called, but the command did not complete successfully, and it will return CMD_INVALID if the * command simply did not exist at all or the wrong number of parameters were given, or the user * was not privilaged enough to execute the command. */ CmdResult CallHandler(const std::string &commandname,const char** parameters, int pcnt, userrec *user); command_t* GetHandler(const std::string &commandname); /** This function returns true if a command is valid with the given number of parameters and user. * @param commandname The command name to check * @param pcnt The parameter count * @param user The user to check against * @return If the user given has permission to execute the command, and the parameter count is * equal to or greater than the minimum number of parameters to the given command, then this * function will return true, otherwise it will return false. */ bool IsValidCommand(const std::string &commandname, int pcnt, userrec * user); /** LoopCall is used to call a command classes handler repeatedly based on the contents of a comma seperated list. * There are two overriden versions of this method, one of which takes two potential lists and the other takes one. * We need a version which takes two potential lists for JOIN, because a JOIN may contain two lists of items at once, * the channel names and their keys as follows: * * JOIN #chan1,#chan2,#chan3 key1,,key3 * * Therefore, we need to deal with both lists concurrently. The first instance of this method does that by creating * two instances of irc::commasepstream and reading them both together until the first runs out of tokens. * The second version is much simpler and just has the one stream to read, and is used in NAMES, WHOIS, PRIVMSG etc. * Both will only parse until they reach ServerInstance->Config->MaxTargets number of targets, to stop abuse via spam. * * @param user The user who sent the command * @param CommandObj the command object to call for each parameter in the list * @param parameters Parameter list as an array of array of char (that's not a typo). * @param The number of items in the parameters list * @param splithere The first parameter index to split as a comma seperated list * @param extra The second parameter index to split as a comma seperated list * @return This function will return 1 when there are no more parameters to process. When this occurs, its * caller should return without doing anything, otherwise it should continue into its main section of code. */ int LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere, unsigned int extra); /** LoopCall is used to call a command classes handler repeatedly based on the contents of a comma seperated list. * There are two overriden versions of this method, one of which takes two potential lists and the other takes one. * We need a version which takes two potential lists for JOIN, because a JOIN may contain two lists of items at once, * the channel names and their keys as follows: * * JOIN #chan1,#chan2,#chan3 key1,,key3 * * Therefore, we need to deal with both lists concurrently. The first instance of this method does that by creating * two instances of irc::commasepstream and reading them both together until the first runs out of tokens. * The second version is much simpler and just has the one stream to read, and is used in NAMES, WHOIS, PRIVMSG etc. * Both will only parse until they reach ServerInstance->Config->MaxTargets number of targets, to stop abuse via spam. * * @param user The user who sent the command * @param CommandObj the command object to call for each parameter in the list * @param parameters Parameter list as an array of array of char (that's not a typo). * @param The number of items in the parameters list * @param splithere The first parameter index to split as a comma seperated list * @param extra The second parameter index to split as a comma seperated list * @return This function will return 1 when there are no more parameters to process. When this occurs, its * caller should return without doing anything, otherwise it should continue into its main section of code. */ int LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere); /** Take a raw input buffer from a recvq, and process it on behalf of a user. * @param buffer The buffer line to process * @param user The user to whom this line belongs */ void ProcessBuffer(std::string &buffer,userrec *user); /** Remove all commands relating to module 'source'. * @param source A module name which has introduced new commands * @return True This function returns true if commands were removed */ bool RemoveCommands(const char* source); /** Add a new command to the commands hash * @param f The new command_t to add to the list * @param so_handle The handle to the shared object where the command can be found. * Only core commands loaded via cmd_*.so files should set this parameter to anything * meaningful. Module authors should leave this parameter at its default of NULL. * @return True if the command was added */ bool CreateCommand(command_t *f, void* so_handle = NULL); }; /** Command handler class for the RELOAD command. * A command cant really reload itself, so this has to be in here. */ class cmd_reload : public command_t { public: /** Standard constructor */ cmd_reload (InspIRCd* Instance) : command_t(Instance,"RELOAD",'o',1) { syntax = ""; } /** Handle RELOAD */ CmdResult Handle(const char** parameters, int pcnt, userrec *user); }; #endif