2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
6 * Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
7 * Copyright (C) 2003-2008 Craig Edwards <craigedwards@brainbox.cc>
8 * Copyright (C) 2006-2007 Oliver Lupton <oliverlupton@gmail.com>
9 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
10 * Copyright (C) 2003 randomdan <???@???>
12 * This file is part of InspIRCd. InspIRCd is free software: you can
13 * redistribute it and/or modify it under the terms of the GNU General Public
14 * License as published by the Free Software Foundation, version 2.
16 * This program is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
18 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
49 CoreExport extern InspIRCd* ServerInstance;
52 #include "consolecolors.h"
54 #include "cull_list.h"
55 #include "extensible.h"
63 #include "usermanager.h"
66 #include "command_parse.h"
68 #include "socketengine.h"
70 #include "filelogger.h"
72 #include "threadengine.h"
73 #include "configreader.h"
74 #include "inspstring.h"
78 * Used to define the maximum number of parameters a command may have.
80 #define MAXPARAMETERS 127
82 /** Returned by some functions to indicate failure.
86 /** Template function to convert any input type to std::string
88 template<typename T> inline std::string ConvNumeric(const T &in)
90 if (in == 0) return "0";
95 *out = "0123456789"[ std::abs( (long)quotient % 10 ) ];
102 std::reverse(res,out);
106 /** Template function to convert any input type to std::string
108 inline std::string ConvToStr(const int in)
110 return ConvNumeric(in);
113 /** Template function to convert any input type to std::string
115 inline std::string ConvToStr(const long in)
117 return ConvNumeric(in);
120 /** Template function to convert any input type to std::string
122 inline std::string ConvToStr(const char* in)
127 /** Template function to convert any input type to std::string
129 inline std::string ConvToStr(const bool in)
131 return (in ? "1" : "0");
134 /** Template function to convert any input type to std::string
136 inline std::string ConvToStr(char in)
138 return std::string(in,1);
141 /** Template function to convert any input type to std::string
143 template <class T> inline std::string ConvToStr(const T &in)
145 std::stringstream tmp;
146 if (!(tmp << in)) return std::string();
150 /** Template function to convert any input type to any other type
151 * (usually an integer or numeric type)
153 template<typename T> inline long ConvToInt(const T &in)
155 std::stringstream tmp;
156 if (!(tmp << in)) return 0;
157 return atol(tmp.str().c_str());
160 /** This class contains various STATS counters
161 * It is used by the InspIRCd class, which internally
162 * has an instance of it.
167 /** Number of accepted connections
169 unsigned long statsAccept;
170 /** Number of failed accepts
172 unsigned long statsRefused;
173 /** Number of unknown commands seen
175 unsigned long statsUnknown;
176 /** Number of nickname collisions handled
178 unsigned long statsCollisions;
179 /** Number of DNS queries sent out
181 unsigned long statsDns;
182 /** Number of good DNS replies received
183 * NOTE: This may not tally to the number sent out,
184 * due to timeouts and other latency issues.
186 unsigned long statsDnsGood;
187 /** Number of bad (negative) DNS replies received
188 * NOTE: This may not tally to the number sent out,
189 * due to timeouts and other latency issues.
191 unsigned long statsDnsBad;
192 /** Number of inbound connections seen
194 unsigned long statsConnects;
195 /** Total bytes of data transmitted
197 unsigned long statsSent;
198 /** Total bytes of data received
200 unsigned long statsRecv;
202 /** Cpu usage at last sample
205 /** Time QP sample was read
207 LARGE_INTEGER LastSampled;
210 LARGE_INTEGER QPFrequency;
212 /** Cpu usage at last sample
215 /** Time last sample was read
217 timespec LastSampled;
219 /** The constructor initializes all the counts to zero
222 : statsAccept(0), statsRefused(0), statsUnknown(0), statsCollisions(0), statsDns(0),
223 statsDnsGood(0), statsDnsBad(0), statsConnects(0), statsSent(0), statsRecv(0)
228 /** This class manages the generation and transmission of ISUPPORT. */
229 class CoreExport ISupportManager
232 /** The generated lines which are sent to clients. */
233 std::vector<std::string> Lines;
236 /** (Re)build the ISUPPORT vector. */
239 /** Returns the std::vector of ISUPPORT lines. */
240 const std::vector<std::string>& GetLines()
245 /** Send the 005 numerics (ISUPPORT) to a user. */
246 void SendTo(LocalUser* user);
249 DEFINE_HANDLER1(IsNickHandler, bool, const std::string&);
250 DEFINE_HANDLER2(GenRandomHandler, void, char*, size_t);
251 DEFINE_HANDLER1(IsIdentHandler, bool, const std::string&);
252 DEFINE_HANDLER1(IsChannelHandler, bool, const std::string&);
253 DEFINE_HANDLER1(RehashHandler, void, const std::string&);
254 DEFINE_HANDLER3(OnCheckExemptionHandler, ModResult, User*, Channel*, const std::string&);
256 /** The main class of the irc server.
257 * This class contains instances of all the other classes in this software.
258 * Amongst other things, it contains a ModeParser, a DNS object, a CommandParser
259 * object, and a list of active Module objects, and facilities for Module
260 * objects to interact with the core system it implements.
262 class CoreExport InspIRCd
265 /** Set up the signal handlers
269 /** Daemonize the ircd and close standard input/output streams
270 * @return True if the program daemonized succesfully
274 /** Iterate the list of BufferedSocket objects, removing ones which have timed out
275 * @param TIME the current time
277 void DoSocketTimeouts(time_t TIME);
279 /** Perform background user events such as PING checks
281 void DoBackgroundUserStuff();
283 /** Returns true when all modules have done pre-registration checks on a user
284 * @param user The user to verify
285 * @return True if all modules have finished checking this user
287 bool AllModulesReportReady(LocalUser* user);
289 /** The current time, updated in the mainloop
291 struct timespec TIME;
293 /** A 64k buffer used to read socket data into
294 * NOTE: update ValidateNetBufferSize if you change this
296 char ReadBuffer[65535];
302 /** Global cull list, will be processed on next iteration
304 CullList GlobalCulls;
305 /** Actions that must happen outside of the current call stack */
306 ActionList AtomicActions;
310 IsNickHandler HandleIsNick;
311 IsIdentHandler HandleIsIdent;
312 OnCheckExemptionHandler HandleOnCheckExemption;
313 IsChannelHandler HandleIsChannel;
314 RehashHandler HandleRehash;
315 GenRandomHandler HandleGenRandom;
317 /** 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
320 * SendMode expects a User* to send the numeric replies
321 * back to, so we create it a fake user that isnt in the user
322 * hash and set its descriptor to FD_MAGIC_NUMBER so the data
323 * falls into the abyss :p
325 FakeUser* FakeClient;
327 /** Find a user in the UUID hash
328 * @param uid The UUID to find
329 * @return A pointer to the user, or NULL if the user does not exist
331 User* FindUUID(const std::string &uid);
333 /** Time this ircd was booted
337 /** Config file pathname specified on the commandline or via ./configure
339 std::string ConfigFileName;
341 ExtensionManager Extensions;
343 /** Mode handler, handles mode setting and removal
347 /** Command parser, handles client to server commands
349 CommandParser* Parser;
351 /** Socket engine, handles socket activity events
355 /** Thread engine, Handles threading where required
357 ThreadEngine* Threads;
359 /** The thread/class used to read config files in REHASH and on startup
361 ConfigReaderThread* ConfigThread;
363 /** LogManager handles logging.
367 /** ModuleManager contains everything related to loading/unloading
370 ModuleManager* Modules;
372 /** BanCacheManager is used to speed up checking of restrictions on connection
375 BanCacheManager *BanCache;
377 /** Stats class, holds miscellaneous stats counters
381 /** Server Config class, holds configuration file data
383 ServerConfig* Config;
385 /** Snomask manager - handles routing of snomask messages
390 /** Timer manager class, triggers Timer timer events
392 TimerManager* Timers;
394 /** X-Line manager. Handles G/K/Q/E line setting, removal and matching
396 XLineManager* XLines;
398 /** User manager. Various methods and data associated with users.
402 /** Channel list, a hash_map containing all channels XXX move to channel manager class
406 /** List of the open ports
408 std::vector<ListenSocket*> ports;
410 /** Set to the current signal recieved
412 static sig_atomic_t s_signal;
414 /** Protocol interface, overridden by server protocol modules
416 ProtocolInterface* PI;
418 /** Holds extensible for user operquit
420 LocalStringExt OperQuit;
422 /** Manages the generation and transmission of ISUPPORT. */
423 ISupportManager ISupport;
425 /** Get the current time
426 * Because this only calls time() once every time around the mainloop,
427 * it is much faster than calling time() directly.
428 * @return The current time as an epoch value (time_t)
430 inline time_t Time() { return TIME.tv_sec; }
431 /** The fractional time at the start of this mainloop iteration (nanoseconds) */
432 inline long Time_ns() { return TIME.tv_nsec; }
433 /** Update the current time. Don't call this unless you have reason to do so. */
436 /** Generate a random string with the given length
437 * @param length The length in bytes
438 * @param printable if false, the string will use characters 0-255; otherwise,
439 * it will be limited to 0x30-0x7E ('0'-'~', nonspace printable characters)
441 std::string GenRandomStr(int length, bool printable = true);
442 /** Generate a random integer.
443 * This is generally more secure than rand()
445 unsigned long GenRandomInt(unsigned long max);
447 /** Fill a buffer with random bits */
448 caller2<void, char*, size_t> GenRandom;
450 /** Bind all ports specified in the configuration file.
451 * @return The number of ports bound without error
453 int BindPorts(FailedPortList &failed_ports);
455 /** Binds a socket on an already open file descriptor
456 * @param sockfd A valid file descriptor of an open socket
457 * @param port The port number to bind to
458 * @param addr The address to bind to (IP only)
459 * @param dolisten Should this port be listened on?
460 * @return True if the port was bound successfully
462 bool BindSocket(int sockfd, int port, const char* addr, bool dolisten = true);
464 /** Gets the GECOS (description) field of the given server.
465 * If the servername is not that of the local server, the name
466 * is passed to handling modules which will attempt to determine
467 * the GECOS that bleongs to the given servername.
468 * @param servername The servername to find the description of
469 * @return The description of this server, or of the local server
471 std::string GetServerDescription(const std::string& servername);
473 /** Find a user in the nick hash.
474 * If the user cant be found in the nick hash check the uuid hash
475 * @param nick The nickname to find
476 * @return A pointer to the user, or NULL if the user does not exist
478 User* FindNick(const std::string &nick);
480 /** Find a user in the nick hash ONLY
482 User* FindNickOnly(const std::string &nick);
484 /** Find a channel in the channels hash
485 * @param chan The channel to find
486 * @return A pointer to the channel, or NULL if the channel does not exist
488 Channel* FindChan(const std::string &chan);
490 /** Check we aren't running as root, and exit if we are
491 * @return Depending on the configuration, this function may never return
495 /** Return true if a channel name is valid
496 * @param chname A channel name to verify
497 * @return True if the name is valid
499 caller1<bool, const std::string&> IsChannel;
501 /** Return true if str looks like a server ID
502 * @param string to check against
504 static bool IsSID(const std::string& sid);
506 /** Rehash the local server
508 caller1<void, const std::string&> Rehash;
510 /** Handles incoming signals after being set
511 * @param signal the signal recieved
513 void SignalHandler(int signal);
515 /** Sets the signal recieved
516 * @param signal the signal recieved
518 static void SetSignal(int signal);
520 /** Causes the server to exit after unloading modules and
521 * closing all open file descriptors.
523 * @param status The exit code to give to the operating system
524 * (See the ExitStatus enum for valid values)
526 void Exit(int status);
528 /** Causes the server to exit immediately with exit code 0.
529 * The status code is required for signal handlers, and ignored.
533 * @param How you want it formatted
535 * @return The formatted string
537 static const char* Format(const char* formatString, ...) CUSTOM_PRINTF(1, 2);
538 static const char* Format(va_list &vaList, const char* formatString) CUSTOM_PRINTF(2, 0);
540 static void QuickExit(int status);
542 /** Return a count of channels on the network
543 * @return The number of channels
547 /** Send an error notice to all local users, opered and unopered
548 * @param s The error string to send
550 void SendError(const std::string &s);
552 /** Return true if a nickname is valid
553 * @param n A nickname to verify
554 * @return True if the nick is valid
556 caller1<bool, const std::string&> IsNick;
558 /** Return true if an ident is valid
559 * @param An ident to verify
560 * @return True if the ident is valid
562 caller1<bool, const std::string&> IsIdent;
564 /** Add a command to this server's command parser
565 * @param f A Command command handler object to add
566 * @throw ModuleException Will throw ModuleExcption if the command already exists
568 inline void AddCommand(Command *f)
570 Modules->AddService(*f);
573 /** Send a modechange.
574 * The parameters provided are identical to that sent to the
575 * handler for class cmd_mode.
576 * @param parameters The mode parameters
577 * @param user The user to send error messages to
579 void SendMode(const std::vector<std::string>& parameters, User *user);
581 /** Send a modechange and route it to the network.
582 * The parameters provided are identical to that sent to the
583 * handler for class cmd_mode.
584 * @param parameters The mode parameters
585 * @param user The user to send error messages to
587 void SendGlobalMode(const std::vector<std::string>& parameters, User *user);
589 /** Match two strings using pattern matching, optionally, with a map
590 * to check case against (may be NULL). If map is null, match will be case insensitive.
591 * @param str The literal string to match against
592 * @param mask The glob pattern to match against.
593 * @param map The character map to use when matching.
595 static bool Match(const std::string &str, const std::string &mask, unsigned const char *map = NULL);
596 static bool Match(const char *str, const char *mask, unsigned const char *map = NULL);
598 /** Match two strings using pattern matching, optionally, with a map
599 * to check case against (may be NULL). If map is null, match will be case insensitive.
600 * Supports CIDR patterns as well as globs.
601 * @param str The literal string to match against
602 * @param mask The glob or CIDR pattern to match against.
603 * @param map The character map to use when matching.
605 static bool MatchCIDR(const std::string &str, const std::string &mask, unsigned const char *map = NULL);
606 static bool MatchCIDR(const char *str, const char *mask, unsigned const char *map = NULL);
608 /** Matches a hostname and IP against a space delimited list of hostmasks.
609 * @param masks The space delimited masks to match against.
610 * @param hostname The hostname to try and match.
611 * @param ipaddr The IP address to try and match.
613 static bool MatchMask(const std::string& masks, const std::string& hostname, const std::string& ipaddr);
615 /** Return true if the given parameter is a valid nick!user\@host mask
616 * @param mask A nick!user\@host masak to match against
617 * @return True i the mask is valid
619 bool IsValidMask(const std::string &mask);
621 /** Strips all color codes from the given string
622 * @param sentence The string to strip from
624 static void StripColor(std::string &sentence);
626 /** Parses color codes from string values to actual color codes
627 * @param input The data to process
629 static void ProcessColors(file_cache& input);
631 /** Rehash the local server
635 /** Check if the given nickmask matches too many users, send errors to the given user
636 * @param nick A nickmask to match against
637 * @param user A user to send error text to
638 * @return True if the nick matches too many users
640 bool NickMatchesEveryone(const std::string &nick, User* user);
642 /** Check if the given IP mask matches too many users, send errors to the given user
643 * @param ip An ipmask to match against
644 * @param user A user to send error text to
645 * @return True if the ip matches too many users
647 bool IPMatchesEveryone(const std::string &ip, User* user);
649 /** Check if the given hostmask matches too many users, send errors to the given user
650 * @param mask A hostmask to match against
651 * @param user A user to send error text to
652 * @return True if the host matches too many users
654 bool HostMatchesEveryone(const std::string &mask, User* user);
656 /** Calculate a duration in seconds from a string in the form 1y2w3d4h6m5s
657 * @param str A string containing a time in the form 1y2w3d4h6m5s
658 * (one year, two weeks, three days, four hours, six minutes and five seconds)
659 * @return The total number of seconds
661 static unsigned long Duration(const std::string& str);
663 /** Attempt to compare a password to a string from the config file.
664 * This will be passed to handling modules which will compare the data
665 * against possible hashed equivalents in the input string.
666 * @param ex The object (user, server, whatever) causing the comparison.
667 * @param data The data from the config file
668 * @param input The data input by the oper
669 * @param hashtype The hash from the config file
670 * @return 0 if the strings match, 1 or -1 if they do not
672 int PassCompare(Extensible* ex, const std::string &data, const std::string &input, const std::string &hashtype);
674 /** Check if a given server is a uline.
675 * An empty string returns true, this is by design.
676 * @param server The server to check for uline status
677 * @return True if the server is a uline OR the string is empty
679 bool ULine(const std::string& server);
681 /** Returns true if the uline is 'silent' (doesnt generate
682 * remote connect notices etc).
684 bool SilentULine(const std::string& server);
686 /** Returns the full version string of this ircd
687 * @return The version string
689 std::string GetVersionString(bool getFullVersion = false);
691 /** Attempt to write the process id to a given file
692 * @param filename The PID file to attempt to write to
693 * @return This function may bail if the file cannot be written
695 void WritePID(const std::string &filename);
697 /** This constructor initialises all the subsystems and reads the config file.
698 * @param argc The argument count passed to main()
699 * @param argv The argument list passed to main()
700 * @throw <anything> If anything is thrown from here and makes it to
701 * you, you should probably just give up and go home. Yes, really.
702 * It's that bad. Higher level classes should catch any non-fatal exceptions.
704 InspIRCd(int argc, char** argv);
706 /** Send a line of WHOIS data to a user.
707 * @param user user to send the line to
708 * @param dest user being WHOISed
709 * @param numeric Numeric to send
710 * @param text Text of the numeric
712 void SendWhoisLine(User* user, User* dest, int numeric, const std::string &text);
714 /** Send a line of WHOIS data to a user.
715 * @param user user to send the line to
716 * @param dest user being WHOISed
717 * @param numeric Numeric to send
718 * @param format Format string for the numeric
719 * @param ... Parameters for the format string
721 void SendWhoisLine(User* user, User* dest, int numeric, const char* format, ...) CUSTOM_PRINTF(5, 6);
723 /** Called to check whether a channel restriction mode applies to a user
724 * @param User that is attempting some action
725 * @param Channel that the action is being performed on
728 caller3<ModResult, User*, Channel*, const std::string&> OnCheckExemption;
730 /** Restart the server.
731 * This function will not return. If an error occurs,
732 * it will throw an instance of CoreException.
733 * @param reason The restart reason to show to all clients
734 * @throw CoreException An instance of CoreException indicating the error from execv().
736 void Restart(const std::string &reason);
738 /** Prepare the ircd for restart or shutdown.
739 * This function unloads all modules which can be unloaded,
740 * closes all open sockets, and closes the logfile.
744 /** Return a time_t as a human-readable string.
746 std::string TimeString(time_t curtime);
748 /** Begin execution of the server.
749 * NOTE: this function NEVER returns. Internally,
750 * it will repeatedly loop.
751 * @return The return value for this function is undefined.
755 char* GetReadBuffer()
757 return this->ReadBuffer;
764 class CommandModule : public Module
768 CommandModule() : cmd(this)
774 ServerInstance->Modules->AddService(cmd);
779 return Version(cmd.name, VF_VENDOR|VF_CORE);