/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2008 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 // Required system headers. #include #include #include "inspircd_config.h" #include "uid.h" #include "users.h" #include "channels.h" #include "timer.h" #include "hashcomp.h" #include "typedefs.h" #include "logger.h" #include "usermanager.h" #include "socket.h" #include "ctables.h" #include "command_parse.h" #include "mode.h" #include "socketengine.h" #include "snomasks.h" #include "cull_list.h" #include "filelogger.h" #include "caller.h" #include "modules.h" #include "configreader.h" #include "inspstring.h" /** * Used to define the maximum number of parameters a command may have. */ #define MAXPARAMETERS 127 /** 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 /** Template function to convert any input type to std::string */ template 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 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 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 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 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) { } }; /** A list of failed port bindings, used for informational purposes on startup */ typedef std::vector > FailedPortList; class InspIRCd; DEFINE_HANDLER1(ProcessUserHandler, void, User*); DEFINE_HANDLER1(IsNickHandler, bool, const char*); DEFINE_HANDLER1(IsIdentHandler, bool, const char*); DEFINE_HANDLER1(FindDescriptorHandler, User*, int); DEFINE_HANDLER1(FloodQuitUserHandler, void, User*); /* Forward declaration - required */ class XLineManager; class BanCacheManager; /** 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 the current UID. Used to generate the next one. */ char current_uid[UUID_LENGTH]; /** 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(); /** Iterate the list of BufferedSocket objects, removing ones which have timed out * @param TIME the current time */ void DoSocketTimeouts(time_t TIME); /** Sets up UID subsystem */ void InitialiseUID(); /** Perform background user events such as PING checks */ void DoBackgroundUserStuff(); /** 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(User* user); /** Logfile pathname specified on the commandline, or empty string */ char LogFileName[MAXBUF]; /** 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 */ irc::sockets::insp_sockaddr client, server; /** Used when connecting clients */ socklen_t length; /** Time offset in seconds * This offset is added to all calls to Time(). Use SetTimeDelta() to update */ int time_delta; #ifdef WIN32 IPC* WindowsIPC; #endif public: /** Global cull list, will be processed on next iteration */ CullList GlobalCulls; /**** Functors ****/ ProcessUserHandler HandleProcessUser; IsNickHandler HandleIsNick; IsIdentHandler HandleIsIdent; FindDescriptorHandler HandleFindDescriptor; FloodQuitUserHandler HandleFloodQuitUser; /** BufferedSocket classes pending deletion after being closed. * We don't delete these immediately as this may cause a segmentation fault. */ std::map SocketCull; /** Globally accessible fake user record. This is used to force mode changes etc across s2s, etc.. bit ugly, but.. better than how this was done in 1.1 * Reason for it: * kludge alert! * SendMode expects a User* to send the numeric replies * back to, so we create it a fake user that isnt in the user * hash and set its descriptor to FD_MAGIC_NUMBER so the data * falls into the abyss :p */ User *FakeClient; /** Returns the next available UID for this server. */ std::string GetUID(); /** Find a user in the UUID hash * @param nick The nickname to find * @return A pointer to the user, or NULL if the user does not exist */ User *FindUUID(const std::string &); /** Find a user in the UUID hash * @param nick The nickname to find * @return A pointer to the user, or NULL if the user does not exist */ User *FindUUID(const char *); /** Build the ISUPPORT string by triggering all modules On005Numeric events */ void BuildISupport(); /** 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; /** LogManager handles logging. */ LogManager *Logs; /** ModuleManager contains everything related to loading/unloading * modules. */ ModuleManager* Modules; /** BanCacheManager is used to speed up checking of restrictions on connection * to the IRCd. */ BanCacheManager *BanCache; /** 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; /** DNS class, provides resolver facilities to the core and modules */ DNS* Res; /** Timer manager class, triggers Timer timer events */ TimerManager* Timers; /** X-Line manager. Handles G/K/Q/E line setting, removal and matching */ XLineManager* XLines; /** User manager. Various methods and data associated with users. */ UserManager *Users; /** Channel list, a hash_map containing all channels XXX move to channel manager class */ chan_hash* chanlist; /** Set to the current signal recieved */ int s_signal; /** 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); /** 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. */ caller1 ProcessUser; /** 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 User 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); /** Find a user in the nick hash. * If the user cant be found in the nick hash check the uuid hash * @param nick The nickname to find * @return A pointer to the user, or NULL if the user does not exist */ User* FindNick(const std::string &nick); /** Find a user in the nick hash. * If the user cant be found in the nick hash check the uuid hash * @param nick The nickname to find * @return A pointer to the user, or NULL if the user does not exist */ User* FindNick(const char* nick); /** Find a user in the nick hash ONLY */ User* FindNickOnly(const char* nick); /** Find a user in the nick hash ONLY */ User* FindNickOnly(const std::string &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 */ Channel* 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 */ Channel* FindChan(const char* chan); /** 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 * @return True if the log could be opened, false if otherwise */ bool OpenLog(char** argv, int argc); /** Close the currently open log file */ void CloseLog(); /** 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); /** Return true if str looks like a server ID * @param string to check against */ bool IsSID(const std::string &str); /** Rehash the local server */ void Rehash(); /** Handles incoming signals after being set * @param signal the signal recieved */ void SignalHandler(int signal); /** Sets the signal recieved * @param signal the signal recieved */ static void SetSignal(int signal); /** 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) */ 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 channels on the network * @return The number of channels */ long ChannelCount(); /** Send an error notice to all local users, opered and unopered * @param s The error string to send */ void SendError(const std::string &s); /** Return true if a nickname is valid * @param n A nickname to verify * @return True if the nick is valid */ caller1 IsNick; /** Return true if an ident is valid * @param An ident to verify * @return True if the ident is valid */ caller1 IsIdent; /** 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 */ caller1 FindDescriptor; /** 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 command handler object to add * @throw ModuleException Will throw ModuleExcption if the command already exists */ void AddCommand(Command *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, User *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, User* 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, User* user); /** 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() */ Channel* 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(User* User, const std::string &LinePrefix, std::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, User* 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, User* 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, User* 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 a 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 ex The object (user, server, whatever) causing the comparison. * @param data The data from the config file * @param input The data input by the oper * @param hashtype The hash from the config file * @return 0 if the strings match, 1 or -1 if they do not */ int PassCompare(Extensible* ex, const char* data,const char* input, const char* hashtype); /** 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); /** 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 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); /** 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(User* user, User* 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(User* user, User* 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 */ caller1 FloodQuitUser; /** 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, * it will repeatedly loop. * @return The return value for this function is undefined. */ int Run(); /** Force all BufferedSockets to be removed which are due to * be culled. */ void BufferedSocketCull(); char* GetReadBuffer() { return this->ReadBuffer; } }; #endif