1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2009 InspIRCd Development Team
6 * See: http://wiki.inspircd.org/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
14 #ifndef __INSPIRCD_H__
15 #define __INSPIRCD_H__
17 #define _FILE_OFFSET_BITS 64
18 #ifndef _LARGEFILE_SOURCE
19 #define _LARGEFILE_SOURCE
25 #define printf_c printf
27 #include "inspircd_win32wrapper.h"
28 /** Windows defines these already */
34 #define CUSTOM_PRINTF(STRING, FIRST) __attribute__((format(printf, STRING, FIRST)))
36 #define CUSTOM_PRINTF(STRING, FIRST)
39 // Required system headers.
57 /** A list of failed port bindings, used for informational purposes on startup */
58 typedef std::vector<std::pair<std::string, std::string> > FailedPortList;
61 CoreExport extern InspIRCd* ServerInstance;
63 #include "inspircd_config.h"
64 #include "inspircd_version.h"
66 #include "cull_list.h"
67 #include "extensible.h"
76 #include "usermanager.h"
79 #include "command_parse.h"
81 #include "socketengine.h"
83 #include "filelogger.h"
86 #include "configreader.h"
87 #include "inspstring.h"
89 #include "threadengine.h"
92 #warning Potentially broken system, PATH_MAX undefined
97 * Used to define the maximum number of parameters a command may have.
99 #define MAXPARAMETERS 127
101 /** Returned by some functions to indicate failure.
105 /** Support for librodent -
106 * see http://www.chatspike.net/index.php?z=64
108 #define ETIREDHAMSTERS EAGAIN
110 /** Template function to convert any input type to std::string
112 template<typename T> inline std::string ConvNumeric(const T &in)
114 if (in == 0) return "0";
119 *out = "0123456789"[ std::abs( (long)quotient % 10 ) ];
126 std::reverse(res,out);
130 /** Template function to convert any input type to std::string
132 inline std::string ConvToStr(const int in)
134 return ConvNumeric(in);
137 /** Template function to convert any input type to std::string
139 inline std::string ConvToStr(const long in)
141 return ConvNumeric(in);
144 /** Template function to convert any input type to std::string
146 inline std::string ConvToStr(const char* in)
151 /** Template function to convert any input type to std::string
153 inline std::string ConvToStr(const bool in)
155 return (in ? "1" : "0");
158 /** Template function to convert any input type to std::string
160 inline std::string ConvToStr(char in)
162 return std::string(in,1);
165 /** Template function to convert any input type to std::string
167 template <class T> inline std::string ConvToStr(const T &in)
169 std::stringstream tmp;
170 if (!(tmp << in)) return std::string();
174 /** Template function to convert any input type to any other type
175 * (usually an integer or numeric type)
177 template<typename T> inline long ConvToInt(const T &in)
179 std::stringstream tmp;
180 if (!(tmp << in)) return 0;
181 return atol(tmp.str().c_str());
184 /** This class contains various STATS counters
185 * It is used by the InspIRCd class, which internally
186 * has an instance of it.
191 /** Number of accepted connections
193 unsigned long statsAccept;
194 /** Number of failed accepts
196 unsigned long statsRefused;
197 /** Number of unknown commands seen
199 unsigned long statsUnknown;
200 /** Number of nickname collisions handled
202 unsigned long statsCollisions;
203 /** Number of DNS queries sent out
205 unsigned long statsDns;
206 /** Number of good DNS replies received
207 * NOTE: This may not tally to the number sent out,
208 * due to timeouts and other latency issues.
210 unsigned long statsDnsGood;
211 /** Number of bad (negative) DNS replies received
212 * NOTE: This may not tally to the number sent out,
213 * due to timeouts and other latency issues.
215 unsigned long statsDnsBad;
216 /** Number of inbound connections seen
218 unsigned long statsConnects;
219 /** Total bytes of data transmitted
222 /** Total bytes of data received
225 /** Cpu usage at last sample
228 /** Time last sample was read
231 /** The constructor initializes all the counts to zero
234 : statsAccept(0), statsRefused(0), statsUnknown(0), statsCollisions(0), statsDns(0),
235 statsDnsGood(0), statsDnsBad(0), statsConnects(0), statsSent(0.0), statsRecv(0.0)
242 DEFINE_HANDLER2(IsNickHandler, bool, const char*, size_t);
243 DEFINE_HANDLER1(IsIdentHandler, bool, const char*);
244 DEFINE_HANDLER1(FloodQuitUserHandler, void, User*);
245 DEFINE_HANDLER2(IsChannelHandler, bool, const char*, size_t);
246 DEFINE_HANDLER1(IsSIDHandler, bool, const std::string&);
247 DEFINE_HANDLER1(RehashHandler, void, const std::string&);
249 /* Forward declaration - required */
251 class BanCacheManager;
253 /** The background thread for config reading, so that reading from executable includes
256 class CoreExport ConfigReaderThread : public Thread
258 ServerConfig* Config;
261 std::string TheUserUID;
262 ConfigReaderThread(const std::string &useruid)
263 : Thread(), done(false), TheUserUID(useruid)
267 virtual ~ConfigReaderThread()
272 /** Run in the main thread to apply the configuration */
274 bool IsDone() { return done; }
277 /** The main class of the irc server.
278 * This class contains instances of all the other classes in this software.
279 * Amongst other things, it contains a ModeParser, a DNS object, a CommandParser
280 * object, and a list of active Module objects, and facilities for Module
281 * objects to interact with the core system it implements.
283 class CoreExport InspIRCd
286 /** Holds the current UID. Used to generate the next one.
288 char current_uid[UUID_LENGTH];
290 /** Set up the signal handlers
294 /** Daemonize the ircd and close standard input/output streams
295 * @return True if the program daemonized succesfully
299 /** Iterate the list of BufferedSocket objects, removing ones which have timed out
300 * @param TIME the current time
302 void DoSocketTimeouts(time_t TIME);
304 /** Increments the current UID by one.
306 void IncrementUID(int pos);
308 /** Perform background user events such as PING checks
310 void DoBackgroundUserStuff();
312 /** Returns true when all modules have done pre-registration checks on a user
313 * @param user The user to verify
314 * @return True if all modules have finished checking this user
316 bool AllModulesReportReady(LocalUser* user);
318 /** Logfile pathname specified on the commandline, or empty string
320 char LogFileName[MAXBUF];
322 /** The current time, updated in the mainloop
326 /** The time that was recorded last time around the mainloop
330 /** A 64k buffer used to read socket data into
331 * NOTE: update ValidateNetBufferSize if you change this
333 char ReadBuffer[65535];
341 /** Global cull list, will be processed on next iteration
343 CullList GlobalCulls;
344 /** Actions that must happen outside of the current call stack */
345 ActionList AtomicActions;
349 IsNickHandler HandleIsNick;
350 IsIdentHandler HandleIsIdent;
351 FloodQuitUserHandler HandleFloodQuitUser;
352 IsChannelHandler HandleIsChannel;
353 IsSIDHandler HandleIsSID;
354 RehashHandler HandleRehash;
356 /** 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
359 * SendMode expects a User* to send the numeric replies
360 * back to, so we create it a fake user that isnt in the user
361 * hash and set its descriptor to FD_MAGIC_NUMBER so the data
362 * falls into the abyss :p
364 FakeUser* FakeClient;
366 /** Returns the next available UID for this server.
368 std::string GetUID();
370 /** Find a user in the UUID hash
371 * @param nick The nickname to find
372 * @return A pointer to the user, or NULL if the user does not exist
374 User* FindUUID(const std::string &);
376 /** Find a user in the UUID hash
377 * @param nick The nickname to find
378 * @return A pointer to the user, or NULL if the user does not exist
380 User* FindUUID(const char *);
382 /** Build the ISUPPORT string by triggering all modules On005Numeric events
384 void BuildISupport();
386 /** Time this ircd was booted
390 /** Config file pathname specified on the commandline or via ./configure
392 std::string ConfigFileName;
394 ExtensionManager Extensions;
396 /** Mode handler, handles mode setting and removal
400 /** Command parser, handles client to server commands
402 CommandParser* Parser;
404 /** Socket engine, handles socket activity events
408 /** Thread engine, Handles threading where required
410 ThreadEngine* Threads;
412 /** The thread/class used to read config files in REHASH and on startup
414 ConfigReaderThread* ConfigThread;
416 /** LogManager handles logging.
420 /** ModuleManager contains everything related to loading/unloading
423 ModuleManager* Modules;
425 /** BanCacheManager is used to speed up checking of restrictions on connection
428 BanCacheManager *BanCache;
430 /** Stats class, holds miscellaneous stats counters
434 /** Server Config class, holds configuration file data
436 ServerConfig* Config;
438 /** Snomask manager - handles routing of snomask messages
443 /** DNS class, provides resolver facilities to the core and modules
447 /** Timer manager class, triggers Timer timer events
449 TimerManager* Timers;
451 /** X-Line manager. Handles G/K/Q/E line setting, removal and matching
453 XLineManager* XLines;
455 /** User manager. Various methods and data associated with users.
459 /** Channel list, a hash_map containing all channels XXX move to channel manager class
463 /** List of the open ports
465 std::vector<ListenSocketBase *> ports;
467 /** Set to the current signal recieved
471 /** Protocol interface, overridden by server protocol modules
473 ProtocolInterface* PI;
475 /** Holds extensible for user nickforced
477 LocalIntExt NICKForced;
479 /** Holds extensible for user operquit
481 LocalStringExt OperQuit;
483 /** Get the current time
484 * Because this only calls time() once every time around the mainloop,
485 * it is much faster than calling time() directly.
486 * @return The current time as an epoch value (time_t)
490 /** Bind all ports specified in the configuration file.
491 * @return The number of ports bound without error
493 int BindPorts(FailedPortList &failed_ports);
495 /** Binds a socket on an already open file descriptor
496 * @param sockfd A valid file descriptor of an open socket
497 * @param port The port number to bind to
498 * @param addr The address to bind to (IP only)
499 * @return True if the port was bound successfully
501 bool BindSocket(int sockfd, int port, const char* addr, bool dolisten = true);
503 /** Gets the GECOS (description) field of the given server.
504 * If the servername is not that of the local server, the name
505 * is passed to handling modules which will attempt to determine
506 * the GECOS that bleongs to the given servername.
507 * @param servername The servername to find the description of
508 * @return The description of this server, or of the local server
510 std::string GetServerDescription(const std::string& servername);
512 /** Find a user in the nick hash.
513 * If the user cant be found in the nick hash check the uuid hash
514 * @param nick The nickname to find
515 * @return A pointer to the user, or NULL if the user does not exist
517 User* FindNick(const std::string &nick);
519 /** Find a user in the nick hash.
520 * If the user cant be found in the nick hash check the uuid hash
521 * @param nick The nickname to find
522 * @return A pointer to the user, or NULL if the user does not exist
524 User* FindNick(const char* nick);
526 /** Find a user in the nick hash ONLY
528 User* FindNickOnly(const char* nick);
530 /** Find a user in the nick hash ONLY
532 User* FindNickOnly(const std::string &nick);
534 /** Find a channel in the channels hash
535 * @param chan The channel to find
536 * @return A pointer to the channel, or NULL if the channel does not exist
538 Channel* FindChan(const std::string &chan);
540 /** Find a channel in the channels hash
541 * @param chan The channel to find
542 * @return A pointer to the channel, or NULL if the channel does not exist
544 Channel* FindChan(const char* chan);
546 /** Check we aren't running as root, and exit if we are
547 * @return Depending on the configuration, this function may never return
551 /** Determine the right path for, and open, the logfile
552 * @param argv The argv passed to main() initially, used to calculate program path
553 * @param argc The argc passed to main() initially, used to calculate program path
554 * @return True if the log could be opened, false if otherwise
556 bool OpenLog(char** argv, int argc);
558 /** Return true if a channel name is valid
559 * @param chname A channel name to verify
560 * @return True if the name is valid
562 caller2<bool, const char*, size_t> IsChannel;
564 /** Return true if str looks like a server ID
565 * @param string to check against
567 caller1<bool, const std::string&> IsSID;
569 /** Rehash the local server
571 caller1<void, const std::string&> Rehash;
573 /** Handles incoming signals after being set
574 * @param signal the signal recieved
576 void SignalHandler(int signal);
578 /** Sets the signal recieved
579 * @param signal the signal recieved
581 static void SetSignal(int signal);
583 /** Causes the server to exit after unloading modules and
584 * closing all open file descriptors.
586 * @param The exit code to give to the operating system
587 * (See the ExitStatus enum for valid values)
589 void Exit(int status);
591 /** Causes the server to exit immediately with exit code 0.
592 * The status code is required for signal handlers, and ignored.
594 static void QuickExit(int status);
596 /** Return a count of channels on the network
597 * @return The number of channels
601 /** Send an error notice to all local users, opered and unopered
602 * @param s The error string to send
604 void SendError(const std::string &s);
606 /** Return true if a nickname is valid
607 * @param n A nickname to verify
608 * @return True if the nick is valid
610 caller2<bool, const char*, size_t> IsNick;
612 /** Return true if an ident is valid
613 * @param An ident to verify
614 * @return True if the ident is valid
616 caller1<bool, const char*> IsIdent;
618 /** Add a dns Resolver class to this server's active set
619 * @param r The resolver to add
620 * @param cached If this value is true, then the cache will
621 * be searched for the DNS result, immediately. If the value is
622 * false, then a request will be sent to the nameserver, and the
623 * result will not be immediately available. You should usually
624 * use the boolean value which you passed to the Resolver
625 * constructor, which Resolver will set appropriately depending
626 * on if cached results are available and haven't expired. It is
627 * however safe to force this value to false, forcing a remote DNS
628 * lookup, but not an update of the cache.
629 * @return True if the operation completed successfully. Note that
630 * if this method returns true, you should not attempt to access
631 * the resolver class you pass it after this call, as depending upon
632 * the request given, the object may be deleted!
634 bool AddResolver(Resolver* r, bool cached);
636 /** Add a command to this server's command parser
637 * @param f A Command command handler object to add
638 * @throw ModuleException Will throw ModuleExcption if the command already exists
640 void AddCommand(Command *f);
642 /** Send a modechange.
643 * The parameters provided are identical to that sent to the
644 * handler for class cmd_mode.
645 * @param parameters The mode parameters
646 * @param user The user to send error messages to
648 void SendMode(const std::vector<std::string>& parameters, User *user);
650 /** Match two strings using pattern matching, optionally, with a map
651 * to check case against (may be NULL). If map is null, match will be case insensitive.
652 * @param str The literal string to match against
653 * @param mask The glob pattern to match against.
655 static bool Match(const std::string &str, const std::string &mask, unsigned const char *map = NULL);
656 static bool Match(const char *str, const char *mask, unsigned const char *map = NULL);
658 /** Match two strings using pattern matching, optionally, with a map
659 * to check case against (may be NULL). If map is null, match will be case insensitive.
660 * Supports CIDR patterns as well as globs.
661 * @param str The literal string to match against
662 * @param mask The glob or CIDR pattern to match against.
664 static bool MatchCIDR(const std::string &str, const std::string &mask, unsigned const char *map = NULL);
665 static bool MatchCIDR(const char *str, const char *mask, unsigned const char *map = NULL);
667 /** Call the handler for a given command.
668 * @param commandname The command whos handler you wish to call
669 * @param parameters The mode parameters
670 * @param pcnt The number of items you have given in the first parameter
671 * @param user The user to execute the command as
672 * @return True if the command handler was called successfully
674 CmdResult CallCommandHandler(const std::string &commandname, const std::vector<std::string>& parameters, User* user);
676 /** Return true if the command is a module-implemented command and the given parameters are valid for it
677 * @param parameters The mode parameters
678 * @param pcnt The number of items you have given in the first parameter
679 * @param user The user to test-execute the command as
680 * @return True if the command handler is a module command, and there are enough parameters and the user has permission to the command
682 bool IsValidModuleCommand(const std::string &commandname, int pcnt, User* user);
684 /** Return true if the given parameter is a valid nick!user\@host mask
685 * @param mask A nick!user\@host masak to match against
686 * @return True i the mask is valid
688 bool IsValidMask(const std::string &mask);
690 /** Rehash the local server
694 /** Check if the given nickmask matches too many users, send errors to the given user
695 * @param nick A nickmask to match against
696 * @param user A user to send error text to
697 * @return True if the nick matches too many users
699 bool NickMatchesEveryone(const std::string &nick, User* user);
701 /** Check if the given IP mask matches too many users, send errors to the given user
702 * @param ip An ipmask to match against
703 * @param user A user to send error text to
704 * @return True if the ip matches too many users
706 bool IPMatchesEveryone(const std::string &ip, User* user);
708 /** Check if the given hostmask matches too many users, send errors to the given user
709 * @param mask A hostmask to match against
710 * @param user A user to send error text to
711 * @return True if the host matches too many users
713 bool HostMatchesEveryone(const std::string &mask, User* user);
715 /** Calculate a duration in seconds from a string in the form 1y2w3d4h6m5s
716 * @param str A string containing a time in the form 1y2w3d4h6m5s
717 * (one year, two weeks, three days, four hours, six minutes and five seconds)
718 * @return The total number of seconds
720 long Duration(const std::string &str);
722 /** Attempt to compare a password to a string from the config file.
723 * This will be passed to handling modules which will compare the data
724 * against possible hashed equivalents in the input string.
725 * @param ex The object (user, server, whatever) causing the comparison.
726 * @param data The data from the config file
727 * @param input The data input by the oper
728 * @param hashtype The hash from the config file
729 * @return 0 if the strings match, 1 or -1 if they do not
731 int PassCompare(Extensible* ex, const std::string &data, const std::string &input, const std::string &hashtype);
733 /** Check if a given server is a uline.
734 * An empty string returns true, this is by design.
735 * @param server The server to check for uline status
736 * @return True if the server is a uline OR the string is empty
738 bool ULine(const std::string& server);
740 /** Returns true if the uline is 'silent' (doesnt generate
741 * remote connect notices etc).
743 bool SilentULine(const std::string& server);
745 /** Returns the subversion revision ID of this ircd
746 * @return The revision ID or an empty string
748 std::string GetRevision();
750 /** Returns the full version string of this ircd
751 * @return The version string
753 std::string GetVersionString();
755 /** Attempt to write the process id to a given file
756 * @param filename The PID file to attempt to write to
757 * @return This function may bail if the file cannot be written
759 void WritePID(const std::string &filename);
761 /** This constructor initialises all the subsystems and reads the config file.
762 * @param argc The argument count passed to main()
763 * @param argv The argument list passed to main()
764 * @throw <anything> If anything is thrown from here and makes it to
765 * you, you should probably just give up and go home. Yes, really.
766 * It's that bad. Higher level classes should catch any non-fatal exceptions.
768 InspIRCd(int argc, char** argv);
770 /** Send a line of WHOIS data to a user.
771 * @param user user to send the line to
772 * @param dest user being WHOISed
773 * @param numeric Numeric to send
774 * @param text Text of the numeric
776 void SendWhoisLine(User* user, User* dest, int numeric, const std::string &text);
778 /** Send a line of WHOIS data to a user.
779 * @param user user to send the line to
780 * @param dest user being WHOISed
781 * @param numeric Numeric to send
782 * @param format Format string for the numeric
783 * @param ... Parameters for the format string
785 void SendWhoisLine(User* user, User* dest, int numeric, const char* format, ...) CUSTOM_PRINTF(5, 6);
789 void DoStats(char statschar, User* user, string_list &results);
793 void DoWhois(User* user, User* dest,unsigned long signon, unsigned long idle, const char* nick);
795 /** Quit a user for excess flood, and if they are not
796 * fully registered yet, temporarily zline their IP.
797 * @param current user to quit
799 caller1<void, User*> FloodQuitUser;
801 /** Restart the server.
802 * This function will not return. If an error occurs,
803 * it will throw an instance of CoreException.
804 * @param reason The restart reason to show to all clients
805 * @throw CoreException An instance of CoreException indicating the error from execv().
807 void Restart(const std::string &reason);
809 /** Prepare the ircd for restart or shutdown.
810 * This function unloads all modules which can be unloaded,
811 * closes all open sockets, and closes the logfile.
815 /** This copies the user and channel hash_maps into new hash maps.
816 * This frees memory used by the hash_map allocator (which it neglects
817 * to free, most of the time, using tons of ram)
819 void RehashUsersAndChans();
821 /** Resets the cached max bans value on all channels.
826 /** Return a time_t as a human-readable string.
828 std::string TimeString(time_t curtime);
830 /** Begin execution of the server.
831 * NOTE: this function NEVER returns. Internally,
832 * it will repeatedly loop.
833 * @return The return value for this function is undefined.
837 /** Adds an extban char to the 005 token.
839 void AddExtBanChar(char c);
841 char* GetReadBuffer()
843 return this->ReadBuffer;
850 class CommandModule : public Module
854 CommandModule() : cmd(this)
856 ServerInstance->AddCommand(&cmd);
861 return Version(cmd.command, VF_VENDOR|VF_CORE);