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-/* +------------------------------------+ * | 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 __INSPIRCD_H__ #define __INSPIRCD_H__ #ifndef WIN32 #define DllExport #define CoreExport #define printf_c printf #else #include "inspircd_win32wrapper.h" /** Windows defines these already */ #undef DELETE #undef ERROR #endif #include <time.h> #include <string> #include <sstream> #include "inspircd_config.h" #include "users.h" #include "channels.h" #include "socket.h" #include "mode.h" #include "socketengine.h" #include "command_parse.h" #include "snomasks.h" #include "cull_list.h" /** Returned by some functions to indicate failure. */ #define ERROR -1 /** Support for librodent - * see http://www.chatspike.net/index.php?z=64 */ #define ETIREDHAMSTERS EAGAIN /** Debug levels for use with InspIRCd::Log() */ enum DebugLevel { DEBUG = 10, VERBOSE = 20, DEFAULT = 30, SPARSE = 40, NONE = 50 }; /** * This define is used in place of strcmp when we * want to check if a char* string contains only one * letter. Pretty fast, its just two compares and an * addition. */ #define IS_SINGLE(x,y) ( (*x == y) && (*(x+1) == 0) ) /** Delete a pointer, and NULL its value */ template<typename T> inline void DELETE(T* x) { delete x; x = NULL; } /** Template function to convert any input type to std::string */ template<typename T> inline std::string ConvNumeric(const T &in) { if (in == 0) return "0"; char res[MAXBUF]; char* out = res; T quotient = in; while (quotient) { *out = "0123456789"[ std::abs( (long)quotient % 10 ) ]; ++out; quotient /= 10; } if ( in < 0) *out++ = '-'; *out = 0; std::reverse(res,out); return res; } /** Template function to convert any input type to std::string */ inline std::string ConvToStr(const int in) { return ConvNumeric(in); } /** Template function to convert any input type to std::string */ inline std::string ConvToStr(const long in) { return ConvNumeric(in); } /** Template function to convert any input type to std::string */ inline std::string ConvToStr(const unsigned long in) { return ConvNumeric(in); } /** Template function to convert any input type to std::string */ inline std::string ConvToStr(const char* in) { return in; } /** Template function to convert any input type to std::string */ inline std::string ConvToStr(const bool in) { return (in ? "1" : "0"); } /** Template function to convert any input type to std::string */ inline std::string ConvToStr(char in) { return std::string(in,1); } /** Template function to convert any input type to std::string */ template <class T> inline std::string ConvToStr(const T &in) { std::stringstream tmp; if (!(tmp << in)) return std::string(); return tmp.str(); } /** Template function to convert any input type to any other type * (usually an integer or numeric type) */ template<typename T> inline long ConvToInt(const T &in) { std::stringstream tmp; if (!(tmp << in)) return 0; return atoi(tmp.str().c_str()); } /** Template function to convert integer to char, storing result in *res and * also returning the pointer to res. Based on Stuart Lowe's C/C++ Pages. * @param T input value * @param V result value * @param R base to convert to */ template<typename T, typename V, typename R> inline char* itoa(const T &in, V *res, R base) { if (base < 2 || base > 16) { *res = 0; return res; } char* out = res; int quotient = in; while (quotient) { *out = "0123456789abcdef"[ std::abs( quotient % base ) ]; ++out; quotient /= base; } if ( in < 0 && base == 10) *out++ = '-'; std::reverse( res, out ); *out = 0; return res; } /** This class contains various STATS counters * It is used by the InspIRCd class, which internally * has an instance of it. */ class serverstats : public classbase { public: /** Number of accepted connections */ unsigned long statsAccept; /** Number of failed accepts */ unsigned long statsRefused; /** Number of unknown commands seen */ unsigned long statsUnknown; /** Number of nickname collisions handled */ unsigned long statsCollisions; /** Number of DNS queries sent out */ unsigned long statsDns; /** Number of good DNS replies received * NOTE: This may not tally to the number sent out, * due to timeouts and other latency issues. */ unsigned long statsDnsGood; /** Number of bad (negative) DNS replies received * NOTE: This may not tally to the number sent out, * due to timeouts and other latency issues. */ unsigned long statsDnsBad; /** Number of inbound connections seen */ unsigned long statsConnects; /** Total bytes of data transmitted */ double statsSent; /** Total bytes of data received */ double statsRecv; /** Cpu usage at last sample */ timeval LastCPU; /** Time last sample was read */ timeval LastSampled; /** The constructor initializes all the counts to zero */ serverstats() : statsAccept(0), statsRefused(0), statsUnknown(0), statsCollisions(0), statsDns(0), statsDnsGood(0), statsDnsBad(0), statsConnects(0), statsSent(0.0), statsRecv(0.0) { } }; /* Forward declaration -- required */ class InspIRCd; /** This class implements a nonblocking log-writer. * Most people writing an ircd give little thought to their disk * i/o. On a congested system, disk writes can block for long * periods of time (e.g. if the system is busy and/or swapping * a lot). If we just use a blocking fprintf() call, this could * block for undesirable amounts of time (half of a second through * to whole seconds). We DO NOT want this, so we make our logfile * nonblocking and hook it into the SocketEngine. * NB: If the operating system does not support nonblocking file * I/O (linux seems to, as does freebsd) this will default to * blocking behaviour. */ class CoreExport FileLogger : public EventHandler { protected: /** The creator/owner of this object */ InspIRCd* ServerInstance; /** The log file (fd is inside this somewhere, * we get it out with fileno()) */ FILE* log; /** Buffer of pending log lines to be written */ std::string buffer; /** Number of write operations that have occured */ int writeops; public: /** The constructor takes an already opened logfile. */ FileLogger(InspIRCd* Instance, FILE* logfile); /** This returns false, logfiles are writeable. */ virtual bool Readable(); /** Handle pending write events. * This will flush any waiting data to disk. * If any data remains after the fprintf call, * another write event is scheduled to write * the rest of the data when possible. */ virtual void HandleEvent(EventType et, int errornum = 0); /** Write one or more preformatted log lines. * If the data cannot be written immediately, * this class will insert itself into the * SocketEngine, and register a write event, * and when the write event occurs it will * attempt again to write the data. */ void WriteLogLine(const std::string &line); /** Close the log file and cancel any events. */ virtual void Close(); /** Close the log file and cancel any events. * (indirectly call Close() */ virtual ~FileLogger(); }; /** A list of failed port bindings, used for informational purposes on startup */ typedef std::vector<std::pair<std::string, long> > FailedPortList; /** A list of ip addresses cross referenced against clone counts */ typedef std::map<irc::string, unsigned int> clonemap; /* Forward declaration - required */ class XLineManager; /** The main class of the irc server. * This class contains instances of all the other classes * in this software, with the exception of the base class, * classbase. Amongst other things, it contains a ModeParser, * a DNS object, a CommandParser object, and a list of active * Module objects, and facilities for Module objects to * interact with the core system it implements. You should * NEVER attempt to instantiate a class of type InspIRCd * yourself. If you do, this is equivalent to spawning a second * IRC server, and could have catastrophic consequences for the * program in terms of ram usage (basically, you could create * an obese forkbomb built from recursively spawning irc servers!) */ class CoreExport InspIRCd : public classbase { private: /** Holds a string describing the last module error to occur */ char MODERR[MAXBUF]; /** Remove a ModuleFactory pointer * @param j Index number of the ModuleFactory to remove */ void EraseFactory(int j); /** Remove a Module pointer * @param j Index number of the Module to remove */ void EraseModule(int j); /** Move a given module to a specific slot in the list * @param modulename The module name to relocate * @param slot The slot to move the module into */ void MoveTo(std::string modulename,int slot); /** Display the startup banner */ void Start(); /** Set up the signal handlers */ void SetSignals(); /** Daemonize the ircd and close standard input/output streams * @return True if the program daemonized succesfully */ bool DaemonSeed(); /** Moves the given module to the last slot in the list * @param modulename The module name to relocate */ void MoveToLast(std::string modulename); /** Moves the given module to the first slot in the list * @param modulename The module name to relocate */ void MoveToFirst(std::string modulename); /** Moves one module to be placed after another in the list * @param modulename The module name to relocate * @param after The module name to place the module after */ void MoveAfter(std::string modulename, std::string after); /** Moves one module to be placed before another in the list * @param modulename The module name to relocate * @param after The module name to place the module before */ void MoveBefore(std::string modulename, std::string before); /** Iterate the list of InspSocket objects, removing ones which have timed out * @param TIME the current time */ void DoSocketTimeouts(time_t TIME); /** Perform background user events such as PING checks * @param TIME the current time */ void DoBackgroundUserStuff(time_t TIME); /** Returns true when all modules have done pre-registration checks on a user * @param user The user to verify * @return True if all modules have finished checking this user */ bool AllModulesReportReady(userrec* user); /** Total number of modules loaded into the ircd, minus one */ int ModCount; /** Logfile pathname specified on the commandline, or empty string */ char LogFileName[MAXBUF]; /** The feature names published by various modules */ featurelist Features; /** The interface names published by various modules */ interfacelist Interfaces; /** The current time, updated in the mainloop */ time_t TIME; /** The time that was recorded last time around the mainloop */ time_t OLDTIME; /** A 64k buffer used to read client lines into */ char ReadBuffer[65535]; /** Used when connecting clients */ insp_sockaddr client, server; /** Used when connecting clients */ socklen_t length; /** Nonblocking file writer */ FileLogger* Logger; /** Time offset in seconds * This offset is added to all calls to Time(). Use SetTimeDelta() to update */ int time_delta; public: /** InspSocket classes pending deletion after being closed. * We don't delete these immediately as this may cause a segmentation fault. */ std::map<InspSocket*,InspSocket*> SocketCull; /** Build the ISUPPORT string by triggering all modules On005Numeric events */ void BuildISupport(); /** Number of unregistered users online right now. * (Unregistered means before USER/NICK/dns) */ int unregistered_count; /** List of server names we've seen. */ servernamelist servernames; /** Time this ircd was booted */ time_t startup_time; /** Config file pathname specified on the commandline or via ./configure */ char ConfigFileName[MAXBUF]; /** Mode handler, handles mode setting and removal */ ModeParser* Modes; /** Command parser, handles client to server commands */ CommandParser* Parser; /** Socket engine, handles socket activity events */ SocketEngine* SE; /** Stats class, holds miscellaneous stats counters */ serverstats* stats; /** Server Config class, holds configuration file data */ ServerConfig* Config; /** Snomask manager - handles routing of snomask messages * to opers. */ SnomaskManager* SNO; /** Client list, a hash_map containing all clients, local and remote */ user_hash* clientlist; /** Channel list, a hash_map containing all channels */ chan_hash* chanlist; /** Local client list, a vector containing only local clients */ std::vector<userrec*> local_users; /** Oper list, a vector containing all local and remote opered users */ std::vector<userrec*> all_opers; /** Map of local ip addresses for clone counting */ clonemap local_clones; /** Map of global ip addresses for clone counting */ clonemap global_clones; /** DNS class, provides resolver facilities to the core and modules */ DNS* Res; /** Timer manager class, triggers InspTimer timer events */ TimerManager* Timers; /** X-Line manager. Handles G/K/Q/E line setting, removal and matching */ XLineManager* XLines; /** A list of Module* module classes * Note that this list is always exactly 255 in size. * The actual number of loaded modules is available from GetModuleCount() */ ModuleList modules; /** A list of ModuleFactory* module factories * Note that this list is always exactly 255 in size. * The actual number of loaded modules is available from GetModuleCount() */ FactoryList factory; /** The time we next call our ping timeout and reg timeout checks */ time_t next_call; /** Global cull list, will be processed on next iteration */ CullList GlobalCulls; /** Get the current time * Because this only calls time() once every time around the mainloop, * it is much faster than calling time() directly. * @param delta True to use the delta as an offset, false otherwise * @return The current time as an epoch value (time_t) */ time_t Time(bool delta = false); /** Set the time offset in seconds * This offset is added to Time() to offset the system time by the specified * number of seconds. * @param delta The number of seconds to offset * @return The old time delta */ int SetTimeDelta(int delta); /** Add a user to the local clone map * @param user The user to add */ void AddLocalClone(userrec* user); /** Add a user to the global clone map * @param user The user to add */ void AddGlobalClone(userrec* user); /** Number of users with a certain mode set on them */ int ModeCount(const char mode); /** Get the time offset in seconds * @return The current time delta (in seconds) */ int GetTimeDelta(); /** Process a user whos socket has been flagged as active * @param cu The user to process * @return There is no actual return value, however upon exit, the user 'cu' may have been * marked for deletion in the global CullList. */ void ProcessUser(userrec* cu); /** Get the total number of currently loaded modules * @return The number of loaded modules */ int GetModuleCount(); /** Find a module by name, and return a Module* to it. * This is preferred over iterating the module lists yourself. * @param name The module name to look up * @return A pointer to the module, or NULL if the module cannot be found */ Module* FindModule(const std::string &name); /** Bind all ports specified in the configuration file. * @param bail True if the function should bail back to the shell on failure * @param found_ports The actual number of ports found in the config, as opposed to the number actually bound * @return The number of ports actually bound without error */ int BindPorts(bool bail, int &found_ports, FailedPortList &failed_ports); /** Binds a socket on an already open file descriptor * @param sockfd A valid file descriptor of an open socket * @param port The port number to bind to * @param addr The address to bind to (IP only) * @return True if the port was bound successfully */ bool BindSocket(int sockfd, int port, char* addr, bool dolisten = true); /** Adds a server name to the list of servers we've seen * @param The servername to add */ void AddServerName(const std::string &servername); /** Finds a cached char* pointer of a server name, * This is used to optimize userrec by storing only the pointer to the name * @param The servername to find * @return A pointer to this name, gauranteed to never become invalid */ const char* FindServerNamePtr(const std::string &servername); /** Returns true if we've seen the given server name before * @param The servername to find * @return True if we've seen this server name before */ bool FindServerName(const std::string &servername); /** Gets the GECOS (description) field of the given server. * If the servername is not that of the local server, the name * is passed to handling modules which will attempt to determine * the GECOS that bleongs to the given servername. * @param servername The servername to find the description of * @return The description of this server, or of the local server */ std::string GetServerDescription(const char* servername); /** Write text to all opers connected to this server * @param text The text format string * @param ... Format args */ void WriteOpers(const char* text, ...); /** Write text to all opers connected to this server * @param text The text to send */ void WriteOpers(const std::string &text); /** Find a nickname in the nick hash * @param nick The nickname to find * @return A pointer to the user, or NULL if the user does not exist */ userrec* FindNick(const std::string &nick); /** Find a nickname in the nick hash * @param nick The nickname to find * @return A pointer to the user, or NULL if the user does not exist */ userrec* FindNick(const char* nick); /** Find a channel in the channels hash * @param chan The channel to find * @return A pointer to the channel, or NULL if the channel does not exist */ chanrec* FindChan(const std::string &chan); /** Find a channel in the channels hash * @param chan The channel to find * @return A pointer to the channel, or NULL if the channel does not exist */ chanrec* FindChan(const char* chan); /** Called by the constructor to load all modules from the config file. */ void LoadAllModules(); /** Check for a 'die' tag in the config file, and abort if found * @return Depending on the configuration, this function may never return */ void CheckDie(); /** Check we aren't running as root, and exit if we are * @return Depending on the configuration, this function may never return */ void CheckRoot(); /** Determine the right path for, and open, the logfile * @param argv The argv passed to main() initially, used to calculate program path * @param argc The argc passed to main() initially, used to calculate program path */ void OpenLog(char** argv, int argc); /** Close the currently open log file */ void CloseLog(); /** Send a server notice to all local users * @param text The text format string to send * @param ... The format arguments */ void ServerNoticeAll(char* text, ...); /** Send a server message (PRIVMSG) to all local users * @param text The text format string to send * @param ... The format arguments */ void ServerPrivmsgAll(char* text, ...); /** Send text to all users with a specific set of modes * @param modes The modes to check against, without a +, e.g. 'og' * @param flags one of WM_OR or WM_AND. If you specify WM_OR, any one of the * mode characters in the first parameter causes receipt of the message, and * if you specify WM_OR, all the modes must be present. * @param text The text format string to send * @param ... The format arguments */ void WriteMode(const char* modes, int flags, const char* text, ...); /** Return true if a channel name is valid * @param chname A channel name to verify * @return True if the name is valid */ bool IsChannel(const char *chname); /** Rehash the local server * @param status This value is unused, and required for signal handler functions */ static void Rehash(int status); /** Causes the server to exit after unloading modules and * closing all open file descriptors. * * @param The exit code to give to the operating system * (See the ExitStatus enum for valid values) */ static void Exit(int status); /** Causes the server to exit immediately with exit code 0. * The status code is required for signal handlers, and ignored. */ static void QuickExit(int status); /** Return a count of users, unknown and known connections * @return The number of users */ int UserCount(); /** Return a count of fully registered connections only * @return The number of registered users */ int RegisteredUserCount(); /** Return a count of invisible (umode +i) users only * @return The number of invisible users */ int InvisibleUserCount(); /** Return a count of opered (umode +o) users only * @return The number of opers */ int OperCount(); /** Return a count of unregistered (before NICK/USER) users only * @return The number of unregistered (unknown) connections */ int UnregisteredUserCount(); /** Return a count of channels on the network * @return The number of channels */ long ChannelCount(); /** Return a count of local users on this server only * @return The number of local users */ long LocalUserCount(); /** Send an error notice to all local users, opered and unopered * @param s The error string to send */ void SendError(const std::string &s); /** 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); /** Publish a 'feature'. * There are two ways for a module to find another module it depends on. * Either by name, using InspIRCd::FindModule, or by feature, using this * function. A feature is an arbitary string which identifies something this * module can do. For example, if your module provides SSL support, but other * modules provide SSL support too, all the modules supporting SSL should * publish an identical 'SSL' feature. This way, any module requiring use * of SSL functions can just look up the 'SSL' feature using FindFeature, * then use the module pointer they are given. * @param FeatureName The case sensitive feature name to make available * @param Mod a pointer to your module class * @returns True on success, false if the feature is already published by * another module. */ bool PublishFeature(const std::string &FeatureName, Module* Mod); /** Publish a module to an 'interface'. * Modules which implement the same interface (the same way of communicating * with other modules) can publish themselves to an interface, using this * method. When they do so, they become part of a list of related or * compatible modules, and a third module may then query for that list * and know that all modules within that list offer the same API. * A prime example of this is the hashing modules, which all accept the * same types of Request class. Consider this to be similar to PublishFeature, * except for that multiple modules may publish the same 'feature'. * @param InterfaceName The case sensitive interface name to make available * @param Mod a pointer to your module class * @returns True on success, false on failure (there are currently no failure * cases) */ bool PublishInterface(const std::string &InterfaceName, Module* Mod); /** Return a pair saying how many other modules are currently using the * interfaces provided by module m. * @param m The module to count usage for * @return A pair, where the first value is the number of uses of the interface, * and the second value is the interface name being used. */ std::pair<int,std::string> GetInterfaceInstanceCount(Module* m); /** Mark your module as using an interface. * If you mark your module as using an interface, then that interface * module may not unload until your module has unloaded first. * This can be used to prevent crashes by ensuring code you depend on * is always in memory while your module is active. * @param InterfaceName The interface to use */ void UseInterface(const std::string &InterfaceName); /** Mark your module as finished with an interface. * If you used UseInterface() above, you should use this method when * your module is finished with the interface (usually in its destructor) * to allow the modules which implement the given interface to be unloaded. * @param InterfaceName The interface you are finished with using. */ void DoneWithInterface(const std::string &InterfaceName); /** Unpublish a 'feature'. * When your module exits, it must call this method for every feature it * is providing so that the feature table is cleaned up. * @param FeatureName the feature to remove */ bool UnpublishFeature(const std::string &FeatureName); /** Unpublish your module from an interface * When your module exits, it must call this method for every interface * it is part of so that the interfaces table is cleaned up. Only when * the last item is deleted from an interface does the interface get * removed. * @param InterfaceName the interface to be removed from * @param Mod The module to remove from the interface list */ bool UnpublishInterface(const std::string &InterfaceName, Module* Mod); /** Find a 'feature'. * There are two ways for a module to find another module it depends on. * Either by name, using InspIRCd::FindModule, or by feature, using the * InspIRCd::PublishFeature method. A feature is an arbitary string which * identifies something this module can do. For example, if your module * provides SSL support, but other modules provide SSL support too, all * the modules supporting SSL should publish an identical 'SSL' feature. * To find a module capable of providing the feature you want, simply * call this method with the feature name you are looking for. * @param FeatureName The feature name you wish to obtain the module for * @returns A pointer to a valid module class on success, NULL on failure. */ Module* FindFeature(const std::string &FeatureName); /** Find an 'interface'. * An interface is a list of modules which all implement the same API. * @param InterfaceName The Interface you wish to obtain the module * list of. * @return A pointer to a deque of Module*, or NULL if the interface * does not exist. */ modulelist* FindInterface(const std::string &InterfaceName); /** Given a pointer to a Module, return its filename * @param m The module pointer to identify * @return The module name or an empty string */ const std::string& GetModuleName(Module* m); /** Return true if a nickname is valid * @param n A nickname to verify * @return True if the nick is valid */ bool IsNick(const char* n); /** Return true if an ident is valid * @param An ident to verify * @return True if the ident is valid */ bool IsIdent(const char* n); /** Find a username by their file descriptor. * It is preferred to use this over directly accessing the fd_ref_table array. * @param socket The file descriptor of a user * @return A pointer to the user if the user exists locally on this descriptor */ userrec* FindDescriptor(int socket); /** Add a new mode to this server's mode parser * @param mh The modehandler to add * @param modechar The mode character this modehandler handles * @return True if the mode handler was added */ bool AddMode(ModeHandler* mh, const unsigned char modechar); /** Add a new mode watcher to this server's mode parser * @param mw The modewatcher to add * @return True if the modewatcher was added */ bool AddModeWatcher(ModeWatcher* mw); /** Delete a mode watcher from this server's mode parser * @param mw The modewatcher to delete * @return True if the modewatcher was deleted */ bool DelModeWatcher(ModeWatcher* mw); /** Add a dns Resolver class to this server's active set * @param r The resolver to add * @param cached If this value is true, then the cache will * be searched for the DNS result, immediately. If the value is * false, then a request will be sent to the nameserver, and the * result will not be immediately available. You should usually * use the boolean value which you passed to the Resolver * constructor, which Resolver will set appropriately depending * on if cached results are available and haven't expired. It is * however safe to force this value to false, forcing a remote DNS * lookup, but not an update of the cache. * @return True if the operation completed successfully. Note that * if this method returns true, you should not attempt to access * the resolver class you pass it after this call, as depending upon * the request given, the object may be deleted! */ bool AddResolver(Resolver* r, bool cached); /** Add a command to this server's command parser * @param f A command_t command handler object to add * @throw ModuleException Will throw ModuleExcption if the command already exists */ void AddCommand(command_t *f); /** Send a modechange. * The parameters provided are identical to that sent to the * handler for class cmd_mode. * @param parameters The mode parameters * @param pcnt The number of items you have given in the first parameter * @param user The user to send error messages to */ void SendMode(const char **parameters, int pcnt, userrec *user); /** Match two strings using pattern matching. * This operates identically to the global function match(), * except for that it takes std::string arguments rather than * const char* ones. * @param sliteral The literal string to match against * @param spattern The pattern to match against. CIDR and globs are supported. */ bool MatchText(const std::string &sliteral, const std::string &spattern); /** Call the handler for a given command. * @param commandname The command whos handler you wish to call * @param parameters The mode parameters * @param pcnt The number of items you have given in the first parameter * @param user The user to execute the command as * @return True if the command handler was called successfully */ CmdResult CallCommandHandler(const std::string &commandname, const char** parameters, int pcnt, userrec* user); /** Return true if the command is a module-implemented command and the given parameters are valid for it * @param parameters The mode parameters * @param pcnt The number of items you have given in the first parameter * @param user The user to test-execute the command as * @return True if the command handler is a module command, and there are enough parameters and the user has permission to the command */ bool IsValidModuleCommand(const std::string &commandname, int pcnt, userrec* user); /** Add a gline and apply it * @param duration How long the line should last * @param source Who set the line * @param reason The reason for the line * @param hostmask The hostmask to set the line against */ void AddGLine(long duration, const std::string &source, const std::string &reason, const std::string &hostmask); /** Add a qline and apply it * @param duration How long the line should last * @param source Who set the line * @param reason The reason for the line * @param nickname The nickmask to set the line against */ void AddQLine(long duration, const std::string &source, const std::string &reason, const std::string &nickname); /** Add a zline and apply it * @param duration How long the line should last * @param source Who set the line * @param reason The reason for the line * @param ipaddr The ip-mask to set the line against */ void AddZLine(long duration, const std::string &source, const std::string &reason, const std::string &ipaddr); /** Add a kline and apply it * @param duration How long the line should last * @param source Who set the line * @param reason The reason for the line * @param hostmask The hostmask to set the line against */ void AddKLine(long duration, const std::string &source, const std::string &reason, const std::string &hostmask); /** Add an eline * @param duration How long the line should last * @param source Who set the line * @param reason The reason for the line * @param hostmask The hostmask to set the line against */ void AddELine(long duration, const std::string &source, const std::string &reason, const std::string &hostmask); /** Delete a gline * @param hostmask The gline to delete * @return True if the item was removed */ bool DelGLine(const std::string &hostmask); /** Delete a qline * @param nickname The qline to delete * @return True if the item was removed */ bool DelQLine(const std::string &nickname); /** Delete a zline * @param ipaddr The zline to delete * @return True if the item was removed */ bool DelZLine(const std::string &ipaddr); /** Delete a kline * @param hostmask The kline to delete * @return True if the item was removed */ bool DelKLine(const std::string &hostmask); /** Delete an eline * @param hostmask The kline to delete * @return True if the item was removed */ bool DelELine(const std::string &hostmask); /** Return true if the given parameter is a valid nick!user\@host mask * @param mask A nick!user\@host masak to match against * @return True i the mask is valid */ bool IsValidMask(const std::string &mask); /** Rehash the local server */ void RehashServer(); /** Return the channel whos index number matches that provided * @param The index number of the channel to fetch * @return A channel record, or NUll if index < 0 or index >= InspIRCd::ChannelCount() */ chanrec* GetChannelIndex(long index); /** Dump text to a user target, splitting it appropriately to fit * @param User the user to dump the text to * @param LinePrefix text to prefix each complete line with * @param TextStream the text to send to the user */ void DumpText(userrec* User, const std::string &LinePrefix, stringstream &TextStream); /** Check if the given nickmask matches too many users, send errors to the given user * @param nick A nickmask to match against * @param user A user to send error text to * @return True if the nick matches too many users */ bool NickMatchesEveryone(const std::string &nick, userrec* user); /** Check if the given IP mask matches too many users, send errors to the given user * @param ip An ipmask to match against * @param user A user to send error text to * @return True if the ip matches too many users */ bool IPMatchesEveryone(const std::string &ip, userrec* user); /** Check if the given hostmask matches too many users, send errors to the given user * @param mask A hostmask to match against * @param user A user to send error text to * @return True if the host matches too many users */ bool HostMatchesEveryone(const std::string &mask, userrec* user); /** Calculate a duration in seconds from a string in the form 1y2w3d4h6m5s * @param str A string containing a time in the form 1y2w3d4h6m5s * (one year, two weeks, three days, four hours, six minutes and five seconds) * @return The total number of seconds */ long Duration(const std::string &str); /** Attempt to compare an oper password to a string from the config file. * This will be passed to handling modules which will compare the data * against possible hashed equivalents in the input string. * @param data The data from the config file * @param input The data input by the oper * @param tagnum the tag number of the oper's tag in the config file * @return 0 if the strings match, 1 or -1 if they do not */ int OperPassCompare(const char* data,const char* input, int tagnum); /** Check if a given server is a uline. * An empty string returns true, this is by design. * @param server The server to check for uline status * @return True if the server is a uline OR the string is empty */ bool ULine(const char* server); /** Returns true if the uline is 'silent' (doesnt generate * remote connect notices etc). */ bool SilentULine(const char* server); /** Returns the subversion revision ID of this ircd * @return The revision ID or an empty string */ std::string GetRevision(); /** Returns the full version string of this ircd * @return The version string */ std::string GetVersionString(); /** Attempt to write the process id to a given file * @param filename The PID file to attempt to write to * @return This function may bail if the file cannot be written */ void WritePID(const std::string &filename); /** Returns text describing the last module error * @return The last error message to occur */ char* ModuleError(); /** Load a given module file * @param filename The file to load * @return True if the module was found and loaded */ bool LoadModule(const char* filename); /** Unload a given module file * @param filename The file to unload * @return True if the module was unloaded */ bool UnloadModule(const char* filename); /** This constructor initialises all the subsystems and reads the config file. * @param argc The argument count passed to main() * @param argv The argument list passed to main() * @throw <anything> If anything is thrown from here and makes it to * you, you should probably just give up and go home. Yes, really. * It's that bad. Higher level classes should catch any non-fatal exceptions. */ InspIRCd(int argc, char** argv); /** Do one iteration of the mainloop * @param process_module_sockets True if module sockets are to be processed * this time around the event loop. The is the default. */ void DoOneIteration(bool process_module_sockets = true); /** Output a log message to the ircd.log file * The text will only be output if the current loglevel * is less than or equal to the level you provide * @param level A log level from the DebugLevel enum * @param text Format string of to write to the log * @param ... Format arguments of text to write to the log */ void Log(int level, const char* text, ...); /** Output a log message to the ircd.log file * The text will only be output if the current loglevel * is less than or equal to the level you provide * @param level A log level from the DebugLevel enum * @param text Text to write to the log */ void Log(int level, const std::string &text); /** Send a line of WHOIS data to a user. * @param user user to send the line to * @param dest user being WHOISed * @param numeric Numeric to send * @param text Text of the numeric */ void SendWhoisLine(userrec* user, userrec* dest, int numeric, const std::string &text); /** Send a line of WHOIS data to a user. * @param user user to send the line to * @param dest user being WHOISed * @param numeric Numeric to send * @param format Format string for the numeric * @param ... Parameters for the format string */ void SendWhoisLine(userrec* user, userrec* dest, int numeric, const char* format, ...); /** Quit a user for excess flood, and if they are not * fully registered yet, temporarily zline their IP. * @param current user to quit */ void FloodQuitUser(userrec* current); /** Restart the server. * This function will not return. If an error occurs, * it will throw an instance of CoreException. * @param reason The restart reason to show to all clients * @throw CoreException An instance of CoreException indicating the error from execv(). */ void Restart(const std::string &reason); /** Prepare the ircd for restart or shutdown. * This function unloads all modules which can be unloaded, * closes all open sockets, and closes the logfile. */ void Cleanup(); /** This copies the user and channel hash_maps into new hash maps. * This frees memory used by the hash_map allocator (which it neglects * to free, most of the time, using tons of ram) */ void RehashUsersAndChans(); /** Resets the cached max bans value on all channels. * Called by rehash. */ void ResetMaxBans(); /** Return a time_t as a human-readable string. */ std::string TimeString(time_t curtime); /** Begin execution of the server. * NOTE: this function NEVER returns. Internally, * after performing some initialisation routines, * it will repeatedly call DoOneIteration in a loop. * @return The return value for this function is undefined. */ int Run(); }; #endif \ No newline at end of file
+/* +------------------------------------+
+ * | 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 __INSPIRCD_H__
+#define __INSPIRCD_H__
+
+#ifndef WIN32
+#define DllExport
+#define CoreExport
+#define printf_c printf
+#else
+#include "inspircd_win32wrapper.h"
+/** Windows defines these already */
+#undef DELETE
+#undef ERROR
+#endif
+
+#include <time.h>
+#include <string>
+#include <sstream>
+#include "inspircd_config.h"
+#include "users.h"
+#include "channels.h"
+#include "socket.h"
+#include "mode.h"
+#include "socketengine.h"
+#include "command_parse.h"
+#include "snomasks.h"
+#include "cull_list.h"
+
+/** Returned by some functions to indicate failure.
+ */
+#define ERROR -1
+
+/** Support for librodent -
+ * see http://www.chatspike.net/index.php?z=64
+ */
+#define ETIREDHAMSTERS EAGAIN
+
+/** Debug levels for use with InspIRCd::Log()
+ */
+enum DebugLevel
+{
+ DEBUG = 10,
+ VERBOSE = 20,
+ DEFAULT = 30,
+ SPARSE = 40,
+ NONE = 50
+};
+
+/**
+ * This define is used in place of strcmp when we
+ * want to check if a char* string contains only one
+ * letter. Pretty fast, its just two compares and an
+ * addition.
+ */
+#define IS_SINGLE(x,y) ( (*x == y) && (*(x+1) == 0) )
+
+/** Delete a pointer, and NULL its value
+ */
+template<typename T> inline void DELETE(T* x)
+{
+ delete x;
+ x = NULL;
+}
+
+/** Template function to convert any input type to std::string
+ */
+template<typename T> inline std::string ConvNumeric(const T &in)
+{
+ if (in == 0) return "0";
+ char res[MAXBUF];
+ char* out = res;
+ T quotient = in;
+ while (quotient) {
+ *out = "0123456789"[ std::abs( (long)quotient % 10 ) ];
+ ++out;
+ quotient /= 10;
+ }
+ if ( in < 0)
+ *out++ = '-';
+ *out = 0;
+ std::reverse(res,out);
+ return res;
+}
+
+/** Template function to convert any input type to std::string
+ */
+inline std::string ConvToStr(const int in)
+{
+ return ConvNumeric(in);
+}
+
+/** Template function to convert any input type to std::string
+ */
+inline std::string ConvToStr(const long in)
+{
+ return ConvNumeric(in);
+}
+
+/** Template function to convert any input type to std::string
+ */
+inline std::string ConvToStr(const unsigned long in)
+{
+ return ConvNumeric(in);
+}
+
+/** Template function to convert any input type to std::string
+ */
+inline std::string ConvToStr(const char* in)
+{
+ return in;
+}
+
+/** Template function to convert any input type to std::string
+ */
+inline std::string ConvToStr(const bool in)
+{
+ return (in ? "1" : "0");
+}
+
+/** Template function to convert any input type to std::string
+ */
+inline std::string ConvToStr(char in)
+{
+ return std::string(in,1);
+}
+
+/** Template function to convert any input type to std::string
+ */
+template <class T> inline std::string ConvToStr(const T &in)
+{
+ std::stringstream tmp;
+ if (!(tmp << in)) return std::string();
+ return tmp.str();
+}
+
+/** Template function to convert any input type to any other type
+ * (usually an integer or numeric type)
+ */
+template<typename T> inline long ConvToInt(const T &in)
+{
+ std::stringstream tmp;
+ if (!(tmp << in)) return 0;
+ return atoi(tmp.str().c_str());
+}
+
+/** Template function to convert integer to char, storing result in *res and
+ * also returning the pointer to res. Based on Stuart Lowe's C/C++ Pages.
+ * @param T input value
+ * @param V result value
+ * @param R base to convert to
+ */
+template<typename T, typename V, typename R> inline char* itoa(const T &in, V *res, R base)
+{
+ if (base < 2 || base > 16) { *res = 0; return res; }
+ char* out = res;
+ int quotient = in;
+ while (quotient) {
+ *out = "0123456789abcdef"[ std::abs( quotient % base ) ];
+ ++out;
+ quotient /= base;
+ }
+ if ( in < 0 && base == 10) *out++ = '-';
+ std::reverse( res, out );
+ *out = 0;
+ return res;
+}
+
+/** This class contains various STATS counters
+ * It is used by the InspIRCd class, which internally
+ * has an instance of it.
+ */
+class serverstats : public classbase
+{
+ public:
+ /** Number of accepted connections
+ */
+ unsigned long statsAccept;
+ /** Number of failed accepts
+ */
+ unsigned long statsRefused;
+ /** Number of unknown commands seen
+ */
+ unsigned long statsUnknown;
+ /** Number of nickname collisions handled
+ */
+ unsigned long statsCollisions;
+ /** Number of DNS queries sent out
+ */
+ unsigned long statsDns;
+ /** Number of good DNS replies received
+ * NOTE: This may not tally to the number sent out,
+ * due to timeouts and other latency issues.
+ */
+ unsigned long statsDnsGood;
+ /** Number of bad (negative) DNS replies received
+ * NOTE: This may not tally to the number sent out,
+ * due to timeouts and other latency issues.
+ */
+ unsigned long statsDnsBad;
+ /** Number of inbound connections seen
+ */
+ unsigned long statsConnects;
+ /** Total bytes of data transmitted
+ */
+ double statsSent;
+ /** Total bytes of data received
+ */
+ double statsRecv;
+ /** Cpu usage at last sample
+ */
+ timeval LastCPU;
+ /** Time last sample was read
+ */
+ timeval LastSampled;
+ /** The constructor initializes all the counts to zero
+ */
+ serverstats()
+ : statsAccept(0), statsRefused(0), statsUnknown(0), statsCollisions(0), statsDns(0),
+ statsDnsGood(0), statsDnsBad(0), statsConnects(0), statsSent(0.0), statsRecv(0.0)
+ {
+ }
+};
+
+/* Forward declaration -- required */
+class InspIRCd;
+
+/** This class implements a nonblocking log-writer.
+ * Most people writing an ircd give little thought to their disk
+ * i/o. On a congested system, disk writes can block for long
+ * periods of time (e.g. if the system is busy and/or swapping
+ * a lot). If we just use a blocking fprintf() call, this could
+ * block for undesirable amounts of time (half of a second through
+ * to whole seconds). We DO NOT want this, so we make our logfile
+ * nonblocking and hook it into the SocketEngine.
+ * NB: If the operating system does not support nonblocking file
+ * I/O (linux seems to, as does freebsd) this will default to
+ * blocking behaviour.
+ */
+class CoreExport FileLogger : public EventHandler
+{
+ protected:
+ /** The creator/owner of this object
+ */
+ InspIRCd* ServerInstance;
+ /** The log file (fd is inside this somewhere,
+ * we get it out with fileno())
+ */
+ FILE* log;
+ /** Buffer of pending log lines to be written
+ */
+ std::string buffer;
+ /** Number of write operations that have occured
+ */
+ int writeops;
+ public:
+ /** The constructor takes an already opened logfile.
+ */
+ FileLogger(InspIRCd* Instance, FILE* logfile);
+ /** This returns false, logfiles are writeable.
+ */
+ virtual bool Readable();
+ /** Handle pending write events.
+ * This will flush any waiting data to disk.
+ * If any data remains after the fprintf call,
+ * another write event is scheduled to write
+ * the rest of the data when possible.
+ */
+ virtual void HandleEvent(EventType et, int errornum = 0);
+ /** Write one or more preformatted log lines.
+ * If the data cannot be written immediately,
+ * this class will insert itself into the
+ * SocketEngine, and register a write event,
+ * and when the write event occurs it will
+ * attempt again to write the data.
+ */
+ void WriteLogLine(const std::string &line);
+ /** Close the log file and cancel any events.
+ */
+ virtual void Close();
+ /** Close the log file and cancel any events.
+ * (indirectly call Close()
+ */
+ virtual ~FileLogger();
+};
+
+/** A list of failed port bindings, used for informational purposes on startup */
+typedef std::vector<std::pair<std::string, long> > FailedPortList;
+
+/** A list of ip addresses cross referenced against clone counts */
+typedef std::map<irc::string, unsigned int> clonemap;
+
+/* Forward declaration - required */
+class XLineManager;
+
+/** The main class of the irc server.
+ * This class contains instances of all the other classes
+ * in this software, with the exception of the base class,
+ * classbase. Amongst other things, it contains a ModeParser,
+ * a DNS object, a CommandParser object, and a list of active
+ * Module objects, and facilities for Module objects to
+ * interact with the core system it implements. You should
+ * NEVER attempt to instantiate a class of type InspIRCd
+ * yourself. If you do, this is equivalent to spawning a second
+ * IRC server, and could have catastrophic consequences for the
+ * program in terms of ram usage (basically, you could create
+ * an obese forkbomb built from recursively spawning irc servers!)
+ */
+class CoreExport InspIRCd : public classbase
+{
+ private:
+ /** Holds a string describing the last module error to occur
+ */
+ char MODERR[MAXBUF];
+
+ /** Remove a ModuleFactory pointer
+ * @param j Index number of the ModuleFactory to remove
+ */
+ void EraseFactory(int j);
+
+ /** Remove a Module pointer
+ * @param j Index number of the Module to remove
+ */
+ void EraseModule(int j);
+
+ /** Move a given module to a specific slot in the list
+ * @param modulename The module name to relocate
+ * @param slot The slot to move the module into
+ */
+ void MoveTo(std::string modulename,int slot);
+
+ /** Display the startup banner
+ */
+ void Start();
+
+ /** Set up the signal handlers
+ */
+ void SetSignals();
+
+ /** Daemonize the ircd and close standard input/output streams
+ * @return True if the program daemonized succesfully
+ */
+ bool DaemonSeed();
+
+ /** Moves the given module to the last slot in the list
+ * @param modulename The module name to relocate
+ */
+ void MoveToLast(std::string modulename);
+
+ /** Moves the given module to the first slot in the list
+ * @param modulename The module name to relocate
+ */
+ void MoveToFirst(std::string modulename);
+
+ /** Moves one module to be placed after another in the list
+ * @param modulename The module name to relocate
+ * @param after The module name to place the module after
+ */
+ void MoveAfter(std::string modulename, std::string after);
+
+ /** Moves one module to be placed before another in the list
+ * @param modulename The module name to relocate
+ * @param after The module name to place the module before
+ */
+ void MoveBefore(std::string modulename, std::string before);
+
+ /** Iterate the list of InspSocket objects, removing ones which have timed out
+ * @param TIME the current time
+ */
+ void DoSocketTimeouts(time_t TIME);
+
+ /** Perform background user events such as PING checks
+ * @param TIME the current time
+ */
+ void DoBackgroundUserStuff(time_t TIME);
+
+ /** Returns true when all modules have done pre-registration checks on a user
+ * @param user The user to verify
+ * @return True if all modules have finished checking this user
+ */
+ bool AllModulesReportReady(userrec* user);
+
+ /** Total number of modules loaded into the ircd, minus one
+ */
+ int ModCount;
+
+ /** Logfile pathname specified on the commandline, or empty string
+ */
+ char LogFileName[MAXBUF];
+
+ /** The feature names published by various modules
+ */
+ featurelist Features;
+
+ /** The interface names published by various modules
+ */
+ interfacelist Interfaces;
+
+ /** The current time, updated in the mainloop
+ */
+ time_t TIME;
+
+ /** The time that was recorded last time around the mainloop
+ */
+ time_t OLDTIME;
+
+ /** A 64k buffer used to read client lines into
+ */
+ char ReadBuffer[65535];
+
+ /** Used when connecting clients
+ */
+ insp_sockaddr client, server;
+
+ /** Used when connecting clients
+ */
+ socklen_t length;
+
+ /** Nonblocking file writer
+ */
+ FileLogger* Logger;
+
+ /** Time offset in seconds
+ * This offset is added to all calls to Time(). Use SetTimeDelta() to update
+ */
+ int time_delta;
+
+ public:
+
+ /** InspSocket classes pending deletion after being closed.
+ * We don't delete these immediately as this may cause a segmentation fault.
+ */
+ std::map<InspSocket*,InspSocket*> SocketCull;
+
+ /** Build the ISUPPORT string by triggering all modules On005Numeric events
+ */
+ void BuildISupport();
+
+ /** Number of unregistered users online right now.
+ * (Unregistered means before USER/NICK/dns)
+ */
+ int unregistered_count;
+
+ /** List of server names we've seen.
+ */
+ servernamelist servernames;
+
+ /** Time this ircd was booted
+ */
+ time_t startup_time;
+
+ /** Config file pathname specified on the commandline or via ./configure
+ */
+ char ConfigFileName[MAXBUF];
+
+ /** Mode handler, handles mode setting and removal
+ */
+ ModeParser* Modes;
+
+ /** Command parser, handles client to server commands
+ */
+ CommandParser* Parser;
+
+ /** Socket engine, handles socket activity events
+ */
+ SocketEngine* SE;
+
+ /** Stats class, holds miscellaneous stats counters
+ */
+ serverstats* stats;
+
+ /** Server Config class, holds configuration file data
+ */
+ ServerConfig* Config;
+
+ /** Snomask manager - handles routing of snomask messages
+ * to opers.
+ */
+ SnomaskManager* SNO;
+
+ /** Client list, a hash_map containing all clients, local and remote
+ */
+ user_hash* clientlist;
+
+ /** Channel list, a hash_map containing all channels
+ */
+ chan_hash* chanlist;
+
+ /** Local client list, a vector containing only local clients
+ */
+ std::vector<userrec*> local_users;
+
+ /** Oper list, a vector containing all local and remote opered users
+ */
+ std::vector<userrec*> all_opers;
+
+ /** Map of local ip addresses for clone counting
+ */
+ clonemap local_clones;
+
+ /** Map of global ip addresses for clone counting
+ */
+ clonemap global_clones;
+
+ /** DNS class, provides resolver facilities to the core and modules
+ */
+ DNS* Res;
+
+ /** Timer manager class, triggers InspTimer timer events
+ */
+ TimerManager* Timers;
+
+ /** X-Line manager. Handles G/K/Q/E line setting, removal and matching
+ */
+ XLineManager* XLines;
+
+ /** A list of Module* module classes
+ * Note that this list is always exactly 255 in size.
+ * The actual number of loaded modules is available from GetModuleCount()
+ */
+ ModuleList modules;
+
+ /** A list of ModuleFactory* module factories
+ * Note that this list is always exactly 255 in size.
+ * The actual number of loaded modules is available from GetModuleCount()
+ */
+ FactoryList factory;
+
+ /** The time we next call our ping timeout and reg timeout checks
+ */
+ time_t next_call;
+
+ /** Global cull list, will be processed on next iteration
+ */
+ CullList GlobalCulls;
+
+ /** Get the current time
+ * Because this only calls time() once every time around the mainloop,
+ * it is much faster than calling time() directly.
+ * @param delta True to use the delta as an offset, false otherwise
+ * @return The current time as an epoch value (time_t)
+ */
+ time_t Time(bool delta = false);
+
+ /** Set the time offset in seconds
+ * This offset is added to Time() to offset the system time by the specified
+ * number of seconds.
+ * @param delta The number of seconds to offset
+ * @return The old time delta
+ */
+ int SetTimeDelta(int delta);
+
+ /** Add a user to the local clone map
+ * @param user The user to add
+ */
+ void AddLocalClone(userrec* user);
+
+ /** Add a user to the global clone map
+ * @param user The user to add
+ */
+ void AddGlobalClone(userrec* user);
+
+ /** Number of users with a certain mode set on them
+ */
+ int ModeCount(const char mode);
+
+ /** Get the time offset in seconds
+ * @return The current time delta (in seconds)
+ */
+ int GetTimeDelta();
+
+ /** Process a user whos socket has been flagged as active
+ * @param cu The user to process
+ * @return There is no actual return value, however upon exit, the user 'cu' may have been
+ * marked for deletion in the global CullList.
+ */
+ void ProcessUser(userrec* cu);
+
+ /** Get the total number of currently loaded modules
+ * @return The number of loaded modules
+ */
+ int GetModuleCount();
+
+ /** Find a module by name, and return a Module* to it.
+ * This is preferred over iterating the module lists yourself.
+ * @param name The module name to look up
+ * @return A pointer to the module, or NULL if the module cannot be found
+ */
+ Module* FindModule(const std::string &name);
+
+ /** Bind all ports specified in the configuration file.
+ * @param bail True if the function should bail back to the shell on failure
+ * @param found_ports The actual number of ports found in the config, as opposed to the number actually bound
+ * @return The number of ports actually bound without error
+ */
+ int BindPorts(bool bail, int &found_ports, FailedPortList &failed_ports);
+
+ /** Binds a socket on an already open file descriptor
+ * @param sockfd A valid file descriptor of an open socket
+ * @param port The port number to bind to
+ * @param addr The address to bind to (IP only)
+ * @return True if the port was bound successfully
+ */
+ bool BindSocket(int sockfd, int port, char* addr, bool dolisten = true);
+
+ /** Adds a server name to the list of servers we've seen
+ * @param The servername to add
+ */
+ void AddServerName(const std::string &servername);
+
+ /** Finds a cached char* pointer of a server name,
+ * This is used to optimize userrec by storing only the pointer to the name
+ * @param The servername to find
+ * @return A pointer to this name, gauranteed to never become invalid
+ */
+ const char* FindServerNamePtr(const std::string &servername);
+
+ /** Returns true if we've seen the given server name before
+ * @param The servername to find
+ * @return True if we've seen this server name before
+ */
+ bool FindServerName(const std::string &servername);
+
+ /** Gets the GECOS (description) field of the given server.
+ * If the servername is not that of the local server, the name
+ * is passed to handling modules which will attempt to determine
+ * the GECOS that bleongs to the given servername.
+ * @param servername The servername to find the description of
+ * @return The description of this server, or of the local server
+ */
+ std::string GetServerDescription(const char* servername);
+
+ /** Write text to all opers connected to this server
+ * @param text The text format string
+ * @param ... Format args
+ */
+ void WriteOpers(const char* text, ...);
+
+ /** Write text to all opers connected to this server
+ * @param text The text to send
+ */
+ void WriteOpers(const std::string &text);
+
+ /** Find a nickname in the nick hash
+ * @param nick The nickname to find
+ * @return A pointer to the user, or NULL if the user does not exist
+ */
+ userrec* FindNick(const std::string &nick);
+
+ /** Find a nickname in the nick hash
+ * @param nick The nickname to find
+ * @return A pointer to the user, or NULL if the user does not exist
+ */
+ userrec* FindNick(const char* nick);
+
+ /** Find a channel in the channels hash
+ * @param chan The channel to find
+ * @return A pointer to the channel, or NULL if the channel does not exist
+ */
+ chanrec* FindChan(const std::string &chan);
+
+ /** Find a channel in the channels hash
+ * @param chan The channel to find
+ * @return A pointer to the channel, or NULL if the channel does not exist
+ */
+ chanrec* FindChan(const char* chan);
+
+ /** Called by the constructor to load all modules from the config file.
+ */
+ void LoadAllModules();
+
+ /** Check for a 'die' tag in the config file, and abort if found
+ * @return Depending on the configuration, this function may never return
+ */
+ void CheckDie();
+
+ /** Check we aren't running as root, and exit if we are
+ * @return Depending on the configuration, this function may never return
+ */
+ void CheckRoot();
+
+ /** Determine the right path for, and open, the logfile
+ * @param argv The argv passed to main() initially, used to calculate program path
+ * @param argc The argc passed to main() initially, used to calculate program path
+ */
+ void OpenLog(char** argv, int argc);
+
+ /** Close the currently open log file
+ */
+ void CloseLog();
+
+ /** Send a server notice to all local users
+ * @param text The text format string to send
+ * @param ... The format arguments
+ */
+ void ServerNoticeAll(char* text, ...);
+
+ /** Send a server message (PRIVMSG) to all local users
+ * @param text The text format string to send
+ * @param ... The format arguments
+ */
+ void ServerPrivmsgAll(char* text, ...);
+
+ /** Send text to all users with a specific set of modes
+ * @param modes The modes to check against, without a +, e.g. 'og'
+ * @param flags one of WM_OR or WM_AND. If you specify WM_OR, any one of the
+ * mode characters in the first parameter causes receipt of the message, and
+ * if you specify WM_OR, all the modes must be present.
+ * @param text The text format string to send
+ * @param ... The format arguments
+ */
+ void WriteMode(const char* modes, int flags, const char* text, ...);
+
+ /** Return true if a channel name is valid
+ * @param chname A channel name to verify
+ * @return True if the name is valid
+ */
+ bool IsChannel(const char *chname);
+
+ /** Rehash the local server
+ * @param status This value is unused, and required for signal handler functions
+ */
+ static void Rehash(int status);
+
+ /** Causes the server to exit after unloading modules and
+ * closing all open file descriptors.
+ *
+ * @param The exit code to give to the operating system
+ * (See the ExitStatus enum for valid values)
+ */
+ static void Exit(int status);
+
+ /** Causes the server to exit immediately with exit code 0.
+ * The status code is required for signal handlers, and ignored.
+ */
+ static void QuickExit(int status);
+
+ /** Return a count of users, unknown and known connections
+ * @return The number of users
+ */
+ int UserCount();
+
+ /** Return a count of fully registered connections only
+ * @return The number of registered users
+ */
+ int RegisteredUserCount();
+
+ /** Return a count of invisible (umode +i) users only
+ * @return The number of invisible users
+ */
+ int InvisibleUserCount();
+
+ /** Return a count of opered (umode +o) users only
+ * @return The number of opers
+ */
+ int OperCount();
+
+ /** Return a count of unregistered (before NICK/USER) users only
+ * @return The number of unregistered (unknown) connections
+ */
+ int UnregisteredUserCount();
+
+ /** Return a count of channels on the network
+ * @return The number of channels
+ */
+ long ChannelCount();
+
+ /** Return a count of local users on this server only
+ * @return The number of local users
+ */
+ long LocalUserCount();
+
+ /** Send an error notice to all local users, opered and unopered
+ * @param s The error string to send
+ */
+ void SendError(const std::string &s);
+
+ /** 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);
+
+ /** Publish a 'feature'.
+ * There are two ways for a module to find another module it depends on.
+ * Either by name, using InspIRCd::FindModule, or by feature, using this
+ * function. A feature is an arbitary string which identifies something this
+ * module can do. For example, if your module provides SSL support, but other
+ * modules provide SSL support too, all the modules supporting SSL should
+ * publish an identical 'SSL' feature. This way, any module requiring use
+ * of SSL functions can just look up the 'SSL' feature using FindFeature,
+ * then use the module pointer they are given.
+ * @param FeatureName The case sensitive feature name to make available
+ * @param Mod a pointer to your module class
+ * @returns True on success, false if the feature is already published by
+ * another module.
+ */
+ bool PublishFeature(const std::string &FeatureName, Module* Mod);
+
+ /** Publish a module to an 'interface'.
+ * Modules which implement the same interface (the same way of communicating
+ * with other modules) can publish themselves to an interface, using this
+ * method. When they do so, they become part of a list of related or
+ * compatible modules, and a third module may then query for that list
+ * and know that all modules within that list offer the same API.
+ * A prime example of this is the hashing modules, which all accept the
+ * same types of Request class. Consider this to be similar to PublishFeature,
+ * except for that multiple modules may publish the same 'feature'.
+ * @param InterfaceName The case sensitive interface name to make available
+ * @param Mod a pointer to your module class
+ * @returns True on success, false on failure (there are currently no failure
+ * cases)
+ */
+ bool PublishInterface(const std::string &InterfaceName, Module* Mod);
+
+ /** Return a pair saying how many other modules are currently using the
+ * interfaces provided by module m.
+ * @param m The module to count usage for
+ * @return A pair, where the first value is the number of uses of the interface,
+ * and the second value is the interface name being used.
+ */
+ std::pair<int,std::string> GetInterfaceInstanceCount(Module* m);
+
+ /** Mark your module as using an interface.
+ * If you mark your module as using an interface, then that interface
+ * module may not unload until your module has unloaded first.
+ * This can be used to prevent crashes by ensuring code you depend on
+ * is always in memory while your module is active.
+ * @param InterfaceName The interface to use
+ */
+ void UseInterface(const std::string &InterfaceName);
+
+ /** Mark your module as finished with an interface.
+ * If you used UseInterface() above, you should use this method when
+ * your module is finished with the interface (usually in its destructor)
+ * to allow the modules which implement the given interface to be unloaded.
+ * @param InterfaceName The interface you are finished with using.
+ */
+ void DoneWithInterface(const std::string &InterfaceName);
+
+ /** Unpublish a 'feature'.
+ * When your module exits, it must call this method for every feature it
+ * is providing so that the feature table is cleaned up.
+ * @param FeatureName the feature to remove
+ */
+ bool UnpublishFeature(const std::string &FeatureName);
+
+ /** Unpublish your module from an interface
+ * When your module exits, it must call this method for every interface
+ * it is part of so that the interfaces table is cleaned up. Only when
+ * the last item is deleted from an interface does the interface get
+ * removed.
+ * @param InterfaceName the interface to be removed from
+ * @param Mod The module to remove from the interface list
+ */
+ bool UnpublishInterface(const std::string &InterfaceName, Module* Mod);
+
+ /** Find a 'feature'.
+ * There are two ways for a module to find another module it depends on.
+ * Either by name, using InspIRCd::FindModule, or by feature, using the
+ * InspIRCd::PublishFeature method. A feature is an arbitary string which
+ * identifies something this module can do. For example, if your module
+ * provides SSL support, but other modules provide SSL support too, all
+ * the modules supporting SSL should publish an identical 'SSL' feature.
+ * To find a module capable of providing the feature you want, simply
+ * call this method with the feature name you are looking for.
+ * @param FeatureName The feature name you wish to obtain the module for
+ * @returns A pointer to a valid module class on success, NULL on failure.
+ */
+ Module* FindFeature(const std::string &FeatureName);
+
+ /** Find an 'interface'.
+ * An interface is a list of modules which all implement the same API.
+ * @param InterfaceName The Interface you wish to obtain the module
+ * list of.
+ * @return A pointer to a deque of Module*, or NULL if the interface
+ * does not exist.
+ */
+ modulelist* FindInterface(const std::string &InterfaceName);
+
+ /** Given a pointer to a Module, return its filename
+ * @param m The module pointer to identify
+ * @return The module name or an empty string
+ */
+ const std::string& GetModuleName(Module* m);
+
+ /** Return true if a nickname is valid
+ * @param n A nickname to verify
+ * @return True if the nick is valid
+ */
+ bool IsNick(const char* n);
+
+ /** Return true if an ident is valid
+ * @param An ident to verify
+ * @return True if the ident is valid
+ */
+ bool IsIdent(const char* n);
+
+ /** Find a username by their file descriptor.
+ * It is preferred to use this over directly accessing the fd_ref_table array.
+ * @param socket The file descriptor of a user
+ * @return A pointer to the user if the user exists locally on this descriptor
+ */
+ userrec* FindDescriptor(int socket);
+
+ /** Add a new mode to this server's mode parser
+ * @param mh The modehandler to add
+ * @param modechar The mode character this modehandler handles
+ * @return True if the mode handler was added
+ */
+ bool AddMode(ModeHandler* mh, const unsigned char modechar);
+
+ /** Add a new mode watcher to this server's mode parser
+ * @param mw The modewatcher to add
+ * @return True if the modewatcher was added
+ */
+ bool AddModeWatcher(ModeWatcher* mw);
+
+ /** Delete a mode watcher from this server's mode parser
+ * @param mw The modewatcher to delete
+ * @return True if the modewatcher was deleted
+ */
+ bool DelModeWatcher(ModeWatcher* mw);
+
+ /** Add a dns Resolver class to this server's active set
+ * @param r The resolver to add
+ * @param cached If this value is true, then the cache will
+ * be searched for the DNS result, immediately. If the value is
+ * false, then a request will be sent to the nameserver, and the
+ * result will not be immediately available. You should usually
+ * use the boolean value which you passed to the Resolver
+ * constructor, which Resolver will set appropriately depending
+ * on if cached results are available and haven't expired. It is
+ * however safe to force this value to false, forcing a remote DNS
+ * lookup, but not an update of the cache.
+ * @return True if the operation completed successfully. Note that
+ * if this method returns true, you should not attempt to access
+ * the resolver class you pass it after this call, as depending upon
+ * the request given, the object may be deleted!
+ */
+ bool AddResolver(Resolver* r, bool cached);
+
+ /** Add a command to this server's command parser
+ * @param f A command_t command handler object to add
+ * @throw ModuleException Will throw ModuleExcption if the command already exists
+ */
+ void AddCommand(command_t *f);
+
+ /** Send a modechange.
+ * The parameters provided are identical to that sent to the
+ * handler for class cmd_mode.
+ * @param parameters The mode parameters
+ * @param pcnt The number of items you have given in the first parameter
+ * @param user The user to send error messages to
+ */
+ void SendMode(const char **parameters, int pcnt, userrec *user);
+
+ /** Match two strings using pattern matching.
+ * This operates identically to the global function match(),
+ * except for that it takes std::string arguments rather than
+ * const char* ones.
+ * @param sliteral The literal string to match against
+ * @param spattern The pattern to match against. CIDR and globs are supported.
+ */
+ bool MatchText(const std::string &sliteral, const std::string &spattern);
+
+ /** Call the handler for a given command.
+ * @param commandname The command whos handler you wish to call
+ * @param parameters The mode parameters
+ * @param pcnt The number of items you have given in the first parameter
+ * @param user The user to execute the command as
+ * @return True if the command handler was called successfully
+ */
+ CmdResult CallCommandHandler(const std::string &commandname, const char** parameters, int pcnt, userrec* user);
+
+ /** Return true if the command is a module-implemented command and the given parameters are valid for it
+ * @param parameters The mode parameters
+ * @param pcnt The number of items you have given in the first parameter
+ * @param user The user to test-execute the command as
+ * @return True if the command handler is a module command, and there are enough parameters and the user has permission to the command
+ */
+ bool IsValidModuleCommand(const std::string &commandname, int pcnt, userrec* user);
+
+ /** Add a gline and apply it
+ * @param duration How long the line should last
+ * @param source Who set the line
+ * @param reason The reason for the line
+ * @param hostmask The hostmask to set the line against
+ */
+ void AddGLine(long duration, const std::string &source, const std::string &reason, const std::string &hostmask);
+
+ /** Add a qline and apply it
+ * @param duration How long the line should last
+ * @param source Who set the line
+ * @param reason The reason for the line
+ * @param nickname The nickmask to set the line against
+ */
+ void AddQLine(long duration, const std::string &source, const std::string &reason, const std::string &nickname);
+
+ /** Add a zline and apply it
+ * @param duration How long the line should last
+ * @param source Who set the line
+ * @param reason The reason for the line
+ * @param ipaddr The ip-mask to set the line against
+ */
+ void AddZLine(long duration, const std::string &source, const std::string &reason, const std::string &ipaddr);
+
+ /** Add a kline and apply it
+ * @param duration How long the line should last
+ * @param source Who set the line
+ * @param reason The reason for the line
+ * @param hostmask The hostmask to set the line against
+ */
+ void AddKLine(long duration, const std::string &source, const std::string &reason, const std::string &hostmask);
+
+ /** Add an eline
+ * @param duration How long the line should last
+ * @param source Who set the line
+ * @param reason The reason for the line
+ * @param hostmask The hostmask to set the line against
+ */
+ void AddELine(long duration, const std::string &source, const std::string &reason, const std::string &hostmask);
+
+ /** Delete a gline
+ * @param hostmask The gline to delete
+ * @return True if the item was removed
+ */
+ bool DelGLine(const std::string &hostmask);
+
+ /** Delete a qline
+ * @param nickname The qline to delete
+ * @return True if the item was removed
+ */
+ bool DelQLine(const std::string &nickname);
+
+ /** Delete a zline
+ * @param ipaddr The zline to delete
+ * @return True if the item was removed
+ */
+ bool DelZLine(const std::string &ipaddr);
+
+ /** Delete a kline
+ * @param hostmask The kline to delete
+ * @return True if the item was removed
+ */
+ bool DelKLine(const std::string &hostmask);
+
+ /** Delete an eline
+ * @param hostmask The kline to delete
+ * @return True if the item was removed
+ */
+ bool DelELine(const std::string &hostmask);
+
+ /** Return true if the given parameter is a valid nick!user\@host mask
+ * @param mask A nick!user\@host masak to match against
+ * @return True i the mask is valid
+ */
+ bool IsValidMask(const std::string &mask);
+
+ /** Rehash the local server
+ */
+ void RehashServer();
+
+ /** Return the channel whos index number matches that provided
+ * @param The index number of the channel to fetch
+ * @return A channel record, or NUll if index < 0 or index >= InspIRCd::ChannelCount()
+ */
+ chanrec* GetChannelIndex(long index);
+
+ /** Dump text to a user target, splitting it appropriately to fit
+ * @param User the user to dump the text to
+ * @param LinePrefix text to prefix each complete line with
+ * @param TextStream the text to send to the user
+ */
+ void DumpText(userrec* User, const std::string &LinePrefix, stringstream &TextStream);
+
+ /** Check if the given nickmask matches too many users, send errors to the given user
+ * @param nick A nickmask to match against
+ * @param user A user to send error text to
+ * @return True if the nick matches too many users
+ */
+ bool NickMatchesEveryone(const std::string &nick, userrec* user);
+
+ /** Check if the given IP mask matches too many users, send errors to the given user
+ * @param ip An ipmask to match against
+ * @param user A user to send error text to
+ * @return True if the ip matches too many users
+ */
+ bool IPMatchesEveryone(const std::string &ip, userrec* user);
+
+ /** Check if the given hostmask matches too many users, send errors to the given user
+ * @param mask A hostmask to match against
+ * @param user A user to send error text to
+ * @return True if the host matches too many users
+ */
+ bool HostMatchesEveryone(const std::string &mask, userrec* user);
+
+ /** Calculate a duration in seconds from a string in the form 1y2w3d4h6m5s
+ * @param str A string containing a time in the form 1y2w3d4h6m5s
+ * (one year, two weeks, three days, four hours, six minutes and five seconds)
+ * @return The total number of seconds
+ */
+ long Duration(const std::string &str);
+
+ /** Attempt to compare an oper password to a string from the config file.
+ * This will be passed to handling modules which will compare the data
+ * against possible hashed equivalents in the input string.
+ * @param data The data from the config file
+ * @param input The data input by the oper
+ * @param tagnum the tag number of the oper's tag in the config file
+ * @return 0 if the strings match, 1 or -1 if they do not
+ */
+ int OperPassCompare(const char* data,const char* input, int tagnum);
+
+ /** Check if a given server is a uline.
+ * An empty string returns true, this is by design.
+ * @param server The server to check for uline status
+ * @return True if the server is a uline OR the string is empty
+ */
+ bool ULine(const char* server);
+
+ /** Returns true if the uline is 'silent' (doesnt generate
+ * remote connect notices etc).
+ */
+ bool SilentULine(const char* server);
+
+ /** Returns the subversion revision ID of this ircd
+ * @return The revision ID or an empty string
+ */
+ std::string GetRevision();
+
+ /** Returns the full version string of this ircd
+ * @return The version string
+ */
+ std::string GetVersionString();
+
+ /** Attempt to write the process id to a given file
+ * @param filename The PID file to attempt to write to
+ * @return This function may bail if the file cannot be written
+ */
+ void WritePID(const std::string &filename);
+
+ /** Returns text describing the last module error
+ * @return The last error message to occur
+ */
+ char* ModuleError();
+
+ /** Load a given module file
+ * @param filename The file to load
+ * @return True if the module was found and loaded
+ */
+ bool LoadModule(const char* filename);
+
+ /** Unload a given module file
+ * @param filename The file to unload
+ * @return True if the module was unloaded
+ */
+ bool UnloadModule(const char* filename);
+
+ /** This constructor initialises all the subsystems and reads the config file.
+ * @param argc The argument count passed to main()
+ * @param argv The argument list passed to main()
+ * @throw <anything> If anything is thrown from here and makes it to
+ * you, you should probably just give up and go home. Yes, really.
+ * It's that bad. Higher level classes should catch any non-fatal exceptions.
+ */
+ InspIRCd(int argc, char** argv);
+
+ /** Do one iteration of the mainloop
+ * @param process_module_sockets True if module sockets are to be processed
+ * this time around the event loop. The is the default.
+ */
+ void DoOneIteration(bool process_module_sockets = true);
+
+ /** Output a log message to the ircd.log file
+ * The text will only be output if the current loglevel
+ * is less than or equal to the level you provide
+ * @param level A log level from the DebugLevel enum
+ * @param text Format string of to write to the log
+ * @param ... Format arguments of text to write to the log
+ */
+ void Log(int level, const char* text, ...);
+
+ /** Output a log message to the ircd.log file
+ * The text will only be output if the current loglevel
+ * is less than or equal to the level you provide
+ * @param level A log level from the DebugLevel enum
+ * @param text Text to write to the log
+ */
+ void Log(int level, const std::string &text);
+
+ /** Send a line of WHOIS data to a user.
+ * @param user user to send the line to
+ * @param dest user being WHOISed
+ * @param numeric Numeric to send
+ * @param text Text of the numeric
+ */
+ void SendWhoisLine(userrec* user, userrec* dest, int numeric, const std::string &text);
+
+ /** Send a line of WHOIS data to a user.
+ * @param user user to send the line to
+ * @param dest user being WHOISed
+ * @param numeric Numeric to send
+ * @param format Format string for the numeric
+ * @param ... Parameters for the format string
+ */
+ void SendWhoisLine(userrec* user, userrec* dest, int numeric, const char* format, ...);
+
+ /** Quit a user for excess flood, and if they are not
+ * fully registered yet, temporarily zline their IP.
+ * @param current user to quit
+ */
+ void FloodQuitUser(userrec* current);
+
+ /** Restart the server.
+ * This function will not return. If an error occurs,
+ * it will throw an instance of CoreException.
+ * @param reason The restart reason to show to all clients
+ * @throw CoreException An instance of CoreException indicating the error from execv().
+ */
+ void Restart(const std::string &reason);
+
+ /** Prepare the ircd for restart or shutdown.
+ * This function unloads all modules which can be unloaded,
+ * closes all open sockets, and closes the logfile.
+ */
+ void Cleanup();
+
+ /** This copies the user and channel hash_maps into new hash maps.
+ * This frees memory used by the hash_map allocator (which it neglects
+ * to free, most of the time, using tons of ram)
+ */
+ void RehashUsersAndChans();
+
+ /** Resets the cached max bans value on all channels.
+ * Called by rehash.
+ */
+ void ResetMaxBans();
+
+ /** Return a time_t as a human-readable string.
+ */
+ std::string TimeString(time_t curtime);
+
+ /** Begin execution of the server.
+ * NOTE: this function NEVER returns. Internally,
+ * after performing some initialisation routines,
+ * it will repeatedly call DoOneIteration in a loop.
+ * @return The return value for this function is undefined.
+ */
+ int Run();
+};
+
+#endif
+