/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2009 Daniel De Graaf * Copyright (C) 2008 Robin Burchell * Copyright (C) 2008 Thomas Stagner * Copyright (C) 2007 Dennis Friis * Copyright (C) 2003, 2007 Craig Edwards * * This file is part of InspIRCd. InspIRCd is free software: you can * redistribute it and/or modify it under the terms of the GNU General Public * License as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #pragma once /** Used to indicate command success codes */ enum CmdResult { CMD_FAILURE = 0, /* Command exists, but failed */ CMD_SUCCESS = 1, /* Command exists, and succeeded */ CMD_INVALID = 2, /* Command doesnt exist at all! */ CMD_EPERM = 3 /* Command failed because of a permission check */ }; /** Flag for commands that are only allowed from servers */ const char FLAG_SERVERONLY = 7; // technically anything nonzero below 'A' works /** Translation types for translation of parameters to UIDs. * This allows the core commands to not have to be aware of how UIDs * work (making it still possible to write other linking modules which * do not use UID (but why would you want to?) */ enum TranslateType { TR_TEXT, /* Raw text, leave as-is */ TR_NICK, /* Nickname, translate to UUID for server->server */ TR_CUSTOM /* Custom translation handled by EncodeParameter/DecodeParameter */ }; /** Routing types for a command. Any command which is created defaults * to having its command broadcasted on success. This behaviour may be * overridden to one of the route types shown below (see the #defines * below for more information on each one's behaviour) */ enum RouteType { ROUTE_TYPE_LOCALONLY, ROUTE_TYPE_BROADCAST, ROUTE_TYPE_UNICAST, ROUTE_TYPE_MESSAGE, ROUTE_TYPE_OPT_BCAST, ROUTE_TYPE_OPT_UCAST }; /** Defines routing information for a command, containing a destination * server id (if applicable) and a routing type from the enum above. */ struct RouteDescriptor { /** Routing type from the enum above */ RouteType type; /** For unicast, the destination server's name */ std::string serverdest; /** For unicast, the destination Server */ Server* server; /** Create a RouteDescriptor */ RouteDescriptor(RouteType t, const std::string &d) : type(t), serverdest(d), server(NULL) { } RouteDescriptor(RouteType t, Server* srv) : type(t), server(srv) { } }; /** Do not route this command */ #define ROUTE_LOCALONLY (RouteDescriptor(ROUTE_TYPE_LOCALONLY, "")) /** Route this command to all servers, fail if not understood */ #define ROUTE_BROADCAST (RouteDescriptor(ROUTE_TYPE_BROADCAST, "")) /** Route this command to a single server (do nothing if own server name specified) */ #define ROUTE_UNICAST(x) (RouteDescriptor(ROUTE_TYPE_UNICAST, x)) /** Route this command as a message with the given target (any of user, #channel, @#channel, $servermask) */ #define ROUTE_MESSAGE(x) (RouteDescriptor(ROUTE_TYPE_MESSAGE, x)) /** Route this command to all servers wrapped via ENCAP, so ignored if not understood */ #define ROUTE_OPT_BCAST (RouteDescriptor(ROUTE_TYPE_OPT_BCAST, "")) /** Route this command to a single server wrapped via ENCAP, so ignored if not understood */ #define ROUTE_OPT_UCAST(x) (RouteDescriptor(ROUTE_TYPE_OPT_UCAST, x)) /** A structure that defines a command. Every command available * in InspIRCd must be defined as derived from Command. */ class CoreExport CommandBase : public ServiceProvider { public: /** User flags needed to execute the command or 0 */ char flags_needed; /** Minimum number of parameters command takes */ const unsigned int min_params; /** Maximum number of parameters command takes. * This is used by the command parser to join extra parameters into one last param. * If not set, no munging is done to this command. */ const unsigned int max_params; /** used by /stats m */ unsigned long use_count; /** True if the command is disabled to non-opers */ bool disabled; /** True if the command can be issued before registering */ bool works_before_reg; /** True if the command allows an empty last parameter. * When false and the last parameter is empty, it's popped BEFORE * checking there are enough params, etc. (i.e. the handler won't * be called if there aren't enough params after popping the empty * param). * True by default */ bool allow_empty_last_param; /** Syntax string for the command, displayed if non-empty string. * This takes place of the text in the 'not enough parameters' numeric. */ std::string syntax; /** Translation type list for possible parameters, used to tokenize * parameters into UIDs and SIDs etc. */ std::vector translation; /** How many seconds worth of penalty does this command have? */ int Penalty; /** Create a new command. * @param me The module which created this command. * @param cmd Command name. This must be UPPER CASE. * @param minpara Minimum parameters required for the command. * @param maxpara Maximum number of parameters this command may have - extra parameters * will be tossed into one last space-seperated param. */ CommandBase(Module* me, const std::string &cmd, int minpara = 0, int maxpara = 0) : ServiceProvider(me, cmd, SERVICE_COMMAND), flags_needed(0), min_params(minpara), max_params(maxpara), use_count(0), disabled(false), works_before_reg(false), allow_empty_last_param(true), Penalty(1) { } virtual RouteDescriptor GetRouting(User* user, const std::vector& parameters) { return ROUTE_LOCALONLY; } /** Encode a parameter for server->server transmission. * Used for parameters for which the translation type is TR_CUSTOM. * @param parameter The parameter to encode. Can be modified in place. * @param index The parameter index (0 == first parameter). */ virtual void EncodeParameter(std::string& parameter, int index) { } /** Decode a parameter from server->server transmission. * Not currently used in this version of InspIRCd. * Used for parameters for which the translation type is TR_CUSTOM. * @param parameter The parameter to decode. Can be modified in place. * @param index The parameter index (0 == first parameter). */ virtual void DecodeParameter(std::string& parameter, int index) { } /** Disable or enable this command. * @param setting True to disable the command. */ void Disable(bool setting) { disabled = setting; } /** Obtain this command's disable state. * @return true if the command is currently disabled * (disabled commands can be used only by operators) */ bool IsDisabled() { return disabled; } /** @return true if the command works before registration. */ bool WorksBeforeReg() { return works_before_reg; } virtual ~CommandBase(); }; class CoreExport Command : public CommandBase { public: Command(Module* me, const std::string& cmd, unsigned int minpara = 0, unsigned int maxpara = 0) : CommandBase(me, cmd, minpara, maxpara) { } /** Handle the command from a user. * @param parameters The parameters for the command. * @param user The user who issued the command. * @return Return CMD_SUCCESS on success, or CMD_FAILURE on failure. */ virtual CmdResult Handle(const std::vector& parameters, User* user) = 0; /** Destructor * Removes this command from the command parser */ ~Command(); }; class CoreExport SplitCommand : public Command { public: SplitCommand(Module* me, const std::string &cmd, int minpara = 0, int maxpara = 0) : Command(me, cmd, minpara, maxpara) {} virtual CmdResult Handle(const std::vector& parameters, User* user); virtual CmdResult HandleLocal(const std::vector& parameters, LocalUser* user); virtual CmdResult HandleRemote(const std::vector& parameters, RemoteUser* user); virtual CmdResult HandleServer(const std::vector& parameters, FakeUser* user); }; /** Shortcut macros for defining translation lists */ #define TRANSLATE1(x1) translation.push_back(x1); #define TRANSLATE2(x1,x2) translation.push_back(x1);translation.push_back(x2); #define TRANSLATE3(x1,x2,x3) translation.push_back(x1);translation.push_back(x2);translation.push_back(x3); #define TRANSLATE4(x1,x2,x3,x4) translation.push_back(x1);translation.push_back(x2);translation.push_back(x3);translation.push_back(x4); #define TRANSLATE5(x1,x2,x3,x4,x5) translation.push_back(x1);translation.push_back(x2);translation.push_back(x3);translation.push_back(x4);\ translation.push_back(x5); #define TRANSLATE6(x1,x2,x3,x4,x5,x6) translation.push_back(x1);translation.push_back(x2);translation.push_back(x3);translation.push_back(x4);\ translation.push_back(x5);translation.push_back(x6); #define TRANSLATE7(x1,x2,x3,x4,x5,x6,x7) translation.push_back(x1);translation.push_back(x2);translation.push_back(x3);translation.push_back(x4);\ translation.push_back(x5);translation.push_back(x6);translation.push_back(x7); #define TRANSLATE8(x1,x2,x3,x4,x5,x6,x7,x8) translation.push_back(x1);translation.push_back(x2);translation.push_back(x3);translation.push_back(x4);\ translation.push_back(x5);translation.push_back(x6);translation.push_back(x7);translation.push_back(x8);