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/>.
28 #define _FILE_OFFSET_BITS 64
29 #ifndef _LARGEFILE_SOURCE
30 #define _LARGEFILE_SOURCE
37 #include "inspircd_win32wrapper.h"
38 /** Windows defines these already */
43 #define CUSTOM_PRINTF(STRING, FIRST) __attribute__((format(printf, STRING, FIRST)))
45 #define CUSTOM_PRINTF(STRING, FIRST)
48 #if defined __clang__ || defined __GNUC__
49 # define DEPRECATED_METHOD(function) function __attribute__((deprecated))
50 #elif defined _MSC_VER
51 # define DEPRECATED_METHOD(function) __declspec(deprecated) function
53 # pragma message ("Warning! DEPRECATED_METHOD() does not work on your compiler!")
54 # define DEPRECATED_METHOD(function) function
57 // Required system headers.
70 # include <unordered_map>
72 # include <tr1/unordered_map>
85 #include "consolecolors.h"
87 CoreExport extern InspIRCd* ServerInstance;
90 #include "cull_list.h"
91 #include "extensible.h"
99 #include "usermanager.h"
102 #include "command_parse.h"
104 #include "socketengine.h"
105 #include "snomasks.h"
106 #include "filelogger.h"
108 #include "threadengine.h"
109 #include "configreader.h"
110 #include "inspstring.h"
111 #include "protocol.h"
114 #warning Potentially broken system, PATH_MAX undefined
115 #define PATH_MAX 4096
119 * Used to define the maximum number of parameters a command may have.
121 #define MAXPARAMETERS 127
123 /** Returned by some functions to indicate failure.
127 /** Template function to convert any input type to std::string
129 template<typename T> inline std::string ConvNumeric(const T &in)
131 if (in == 0) return "0";
136 *out = "0123456789"[ std::abs( (long)quotient % 10 ) ];
143 std::reverse(res,out);
147 /** Template function to convert any input type to std::string
149 inline std::string ConvToStr(const int in)
151 return ConvNumeric(in);
154 /** Template function to convert any input type to std::string
156 inline std::string ConvToStr(const long in)
158 return ConvNumeric(in);
161 /** Template function to convert any input type to std::string
163 inline std::string ConvToStr(const char* in)
168 /** Template function to convert any input type to std::string
170 inline std::string ConvToStr(const bool in)
172 return (in ? "1" : "0");
175 /** Template function to convert any input type to std::string
177 inline std::string ConvToStr(char in)
179 return std::string(in,1);
182 /** Template function to convert any input type to std::string
184 template <class T> inline std::string ConvToStr(const T &in)
186 std::stringstream tmp;
187 if (!(tmp << in)) return std::string();
191 /** Template function to convert any input type to any other type
192 * (usually an integer or numeric type)
194 template<typename T> inline long ConvToInt(const T &in)
196 std::stringstream tmp;
197 if (!(tmp << in)) return 0;
198 return atol(tmp.str().c_str());
201 /** This class contains various STATS counters
202 * It is used by the InspIRCd class, which internally
203 * has an instance of it.
208 /** Number of accepted connections
210 unsigned long statsAccept;
211 /** Number of failed accepts
213 unsigned long statsRefused;
214 /** Number of unknown commands seen
216 unsigned long statsUnknown;
217 /** Number of nickname collisions handled
219 unsigned long statsCollisions;
220 /** Number of DNS queries sent out
222 unsigned long statsDns;
223 /** Number of good DNS replies received
224 * NOTE: This may not tally to the number sent out,
225 * due to timeouts and other latency issues.
227 unsigned long statsDnsGood;
228 /** Number of bad (negative) DNS replies received
229 * NOTE: This may not tally to the number sent out,
230 * due to timeouts and other latency issues.
232 unsigned long statsDnsBad;
233 /** Number of inbound connections seen
235 unsigned long statsConnects;
236 /** Total bytes of data transmitted
238 unsigned long statsSent;
239 /** Total bytes of data received
241 unsigned long statsRecv;
243 /** Cpu usage at last sample
246 /** Time QP sample was read
248 LARGE_INTEGER LastSampled;
251 LARGE_INTEGER QPFrequency;
253 /** Cpu usage at last sample
256 /** Time last sample was read
258 timespec LastSampled;
260 /** The constructor initializes all the counts to zero
263 : statsAccept(0), statsRefused(0), statsUnknown(0), statsCollisions(0), statsDns(0),
264 statsDnsGood(0), statsDnsBad(0), statsConnects(0), statsSent(0), statsRecv(0)
269 /** This class manages the generation and transmission of ISUPPORT. */
270 class CoreExport ISupportManager
273 /** The generated lines which are sent to clients. */
274 std::vector<std::string> Lines;
277 /** (Re)build the ISUPPORT vector. */
280 /** Returns the std::vector of ISUPPORT lines. */
281 const std::vector<std::string>& GetLines()
286 /** Send the 005 numerics (ISUPPORT) to a user. */
287 void SendTo(LocalUser* user);
290 DEFINE_HANDLER2(IsNickHandler, bool, const std::string&, size_t);
291 DEFINE_HANDLER2(GenRandomHandler, void, char*, size_t);
292 DEFINE_HANDLER1(IsIdentHandler, bool, const std::string&);
293 DEFINE_HANDLER2(IsChannelHandler, bool, const std::string&, size_t);
294 DEFINE_HANDLER1(RehashHandler, void, const std::string&);
295 DEFINE_HANDLER3(OnCheckExemptionHandler, ModResult, User*, Channel*, const std::string&);
299 /** The main class of the irc server.
300 * This class contains instances of all the other classes in this software.
301 * Amongst other things, it contains a ModeParser, a DNS object, a CommandParser
302 * object, and a list of active Module objects, and facilities for Module
303 * objects to interact with the core system it implements.
305 class CoreExport InspIRCd
308 /** Holds the current UID. Used to generate the next one.
310 char current_uid[UUID_LENGTH];
312 /** Set up the signal handlers
316 /** Daemonize the ircd and close standard input/output streams
317 * @return True if the program daemonized succesfully
321 /** Iterate the list of BufferedSocket objects, removing ones which have timed out
322 * @param TIME the current time
324 void DoSocketTimeouts(time_t TIME);
326 /** Increments the current UID by one.
328 void IncrementUID(int pos);
330 /** Perform background user events such as PING checks
332 void DoBackgroundUserStuff();
334 /** Returns true when all modules have done pre-registration checks on a user
335 * @param user The user to verify
336 * @return True if all modules have finished checking this user
338 bool AllModulesReportReady(LocalUser* user);
340 /** The current time, updated in the mainloop
342 struct timespec TIME;
344 /** A 64k buffer used to read socket data into
345 * NOTE: update ValidateNetBufferSize if you change this
347 char ReadBuffer[65535];
351 /** Global cull list, will be processed on next iteration
353 CullList GlobalCulls;
354 /** Actions that must happen outside of the current call stack */
355 ActionList AtomicActions;
359 IsNickHandler HandleIsNick;
360 IsIdentHandler HandleIsIdent;
361 OnCheckExemptionHandler HandleOnCheckExemption;
362 IsChannelHandler HandleIsChannel;
363 RehashHandler HandleRehash;
364 GenRandomHandler HandleGenRandom;
366 /** 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
369 * SendMode expects a User* to send the numeric replies
370 * back to, so we create it a fake user that isnt in the user
371 * hash and set its descriptor to FD_MAGIC_NUMBER so the data
372 * falls into the abyss :p
374 FakeUser* FakeClient;
376 /** Returns the next available UID for this server.
378 std::string GetUID();
380 static const char LogHeader[];
382 /** Find a user in the UUID hash
383 * @param uid The UUID to find
384 * @return A pointer to the user, or NULL if the user does not exist
386 User* FindUUID(const std::string &uid);
388 /** Time this ircd was booted
392 /** Config file pathname specified on the commandline or via ./configure
394 std::string ConfigFileName;
396 ExtensionManager Extensions;
398 /** Mode handler, handles mode setting and removal
402 /** Command parser, handles client to server commands
404 CommandParser* Parser;
406 /** Socket engine, handles socket activity events
410 /** Thread engine, Handles threading where required
412 ThreadEngine* Threads;
414 /** The thread/class used to read config files in REHASH and on startup
416 ConfigReaderThread* ConfigThread;
418 /** LogManager handles logging.
422 /** ModuleManager contains everything related to loading/unloading
425 ModuleManager* Modules;
427 /** BanCacheManager is used to speed up checking of restrictions on connection
430 BanCacheManager *BanCache;
432 /** Stats class, holds miscellaneous stats counters
436 /** Server Config class, holds configuration file data
438 ServerConfig* Config;
440 /** Snomask manager - handles routing of snomask messages
445 /** DNS class, provides resolver facilities to the core and modules
449 /** Timer manager class, triggers Timer timer events
451 TimerManager* Timers;
453 /** X-Line manager. Handles G/K/Q/E line setting, removal and matching
455 XLineManager* XLines;
457 /** User manager. Various methods and data associated with users.
461 /** Channel list, a hash_map containing all channels XXX move to channel manager class
465 /** List of the open ports
467 std::vector<ListenSocket*> ports;
469 /** Set to the current signal recieved
473 /** Protocol interface, overridden by server protocol modules
475 ProtocolInterface* PI;
477 /** Holds extensible for user nickforced
479 LocalIntExt NICKForced;
481 /** Holds extensible for user operquit
483 LocalStringExt OperQuit;
485 /** Manages the generation and transmission of ISUPPORT. */
486 ISupportManager ISupport;
488 /** Get the current time
489 * Because this only calls time() once every time around the mainloop,
490 * it is much faster than calling time() directly.
491 * @return The current time as an epoch value (time_t)
493 inline time_t Time() { return TIME.tv_sec; }
494 /** The fractional time at the start of this mainloop iteration (nanoseconds) */
495 inline long Time_ns() { return TIME.tv_nsec; }
496 /** Update the current time. Don't call this unless you have reason to do so. */
499 /** Generate a random string with the given length
500 * @param length The length in bytes
501 * @param printable if false, the string will use characters 0-255; otherwise,
502 * it will be limited to 0x30-0x7E ('0'-'~', nonspace printable characters)
504 std::string GenRandomStr(int length, bool printable = true);
505 /** Generate a random integer.
506 * This is generally more secure than rand()
508 unsigned long GenRandomInt(unsigned long max);
510 /** Fill a buffer with random bits */
511 caller2<void, char*, size_t> GenRandom;
513 /** Bind all ports specified in the configuration file.
514 * @return The number of ports bound without error
516 int BindPorts(FailedPortList &failed_ports);
518 /** Binds a socket on an already open file descriptor
519 * @param sockfd A valid file descriptor of an open socket
520 * @param port The port number to bind to
521 * @param addr The address to bind to (IP only)
522 * @param dolisten Should this port be listened on?
523 * @return True if the port was bound successfully
525 bool BindSocket(int sockfd, int port, const char* addr, bool dolisten = true);
527 /** Gets the GECOS (description) field of the given server.
528 * If the servername is not that of the local server, the name
529 * is passed to handling modules which will attempt to determine
530 * the GECOS that bleongs to the given servername.
531 * @param servername The servername to find the description of
532 * @return The description of this server, or of the local server
534 std::string GetServerDescription(const std::string& servername);
536 /** Find a user in the nick hash.
537 * If the user cant be found in the nick hash check the uuid hash
538 * @param nick The nickname to find
539 * @return A pointer to the user, or NULL if the user does not exist
541 User* FindNick(const std::string &nick);
543 /** Find a user in the nick hash ONLY
545 User* FindNickOnly(const std::string &nick);
547 /** Find a channel in the channels hash
548 * @param chan The channel to find
549 * @return A pointer to the channel, or NULL if the channel does not exist
551 Channel* FindChan(const std::string &chan);
553 /** Check we aren't running as root, and exit if we are
554 * @return Depending on the configuration, this function may never return
558 /** Determine the right path for, and open, the logfile
559 * @param argv The argv passed to main() initially, used to calculate program path
560 * @param argc The argc passed to main() initially, used to calculate program path
561 * @return True if the log could be opened, false if otherwise
563 bool OpenLog(char** argv, int argc);
565 /** Return true if a channel name is valid
566 * @param chname A channel name to verify
567 * @return True if the name is valid
569 caller2<bool, const std::string&, size_t> IsChannel;
571 /** Return true if str looks like a server ID
572 * @param string to check against
574 static bool IsSID(const std::string& sid);
576 /** Rehash the local server
578 caller1<void, const std::string&> Rehash;
580 /** Handles incoming signals after being set
581 * @param signal the signal recieved
583 void SignalHandler(int signal);
585 /** Sets the signal recieved
586 * @param signal the signal recieved
588 static void SetSignal(int signal);
590 /** Causes the server to exit after unloading modules and
591 * closing all open file descriptors.
593 * @param status The exit code to give to the operating system
594 * (See the ExitStatus enum for valid values)
596 void Exit(int status);
598 /** Causes the server to exit immediately with exit code 0.
599 * The status code is required for signal handlers, and ignored.
601 static void QuickExit(int status);
603 /** Return a count of channels on the network
604 * @return The number of channels
608 /** Send an error notice to all local users, opered and unopered
609 * @param s The error string to send
611 void SendError(const std::string &s);
613 /** Return true if a nickname is valid
614 * @param n A nickname to verify
615 * @return True if the nick is valid
617 caller2<bool, const std::string&, size_t> IsNick;
619 /** Return true if an ident is valid
620 * @param An ident to verify
621 * @return True if the ident is valid
623 caller1<bool, const std::string&> IsIdent;
625 /** Add a dns Resolver class to this server's active set
626 * @param r The resolver to add
627 * @param cached If this value is true, then the cache will
628 * be searched for the DNS result, immediately. If the value is
629 * false, then a request will be sent to the nameserver, and the
630 * result will not be immediately available. You should usually
631 * use the boolean value which you passed to the Resolver
632 * constructor, which Resolver will set appropriately depending
633 * on if cached results are available and haven't expired. It is
634 * however safe to force this value to false, forcing a remote DNS
635 * lookup, but not an update of the cache.
636 * @return True if the operation completed successfully. Note that
637 * if this method returns true, you should not attempt to access
638 * the resolver class you pass it after this call, as depending upon
639 * the request given, the object may be deleted!
641 bool AddResolver(Resolver* r, bool cached);
643 /** Add a command to this server's command parser
644 * @param f A Command command handler object to add
645 * @throw ModuleException Will throw ModuleExcption if the command already exists
647 inline void AddCommand(Command *f)
649 Modules->AddService(*f);
652 /** Send a modechange.
653 * The parameters provided are identical to that sent to the
654 * handler for class cmd_mode.
655 * @param parameters The mode parameters
656 * @param user The user to send error messages to
658 void SendMode(const std::vector<std::string>& parameters, User *user);
660 /** Send a modechange and route it to the network.
661 * The parameters provided are identical to that sent to the
662 * handler for class cmd_mode.
663 * @param parameters The mode parameters
664 * @param user The user to send error messages to
666 void SendGlobalMode(const std::vector<std::string>& parameters, User *user);
668 /** Match two strings using pattern matching, optionally, with a map
669 * to check case against (may be NULL). If map is null, match will be case insensitive.
670 * @param str The literal string to match against
671 * @param mask The glob pattern to match against.
672 * @param map The character map to use when matching.
674 static bool Match(const std::string &str, const std::string &mask, unsigned const char *map = NULL);
675 static bool Match(const char *str, const char *mask, unsigned const char *map = NULL);
677 /** Match two strings using pattern matching, optionally, with a map
678 * to check case against (may be NULL). If map is null, match will be case insensitive.
679 * Supports CIDR patterns as well as globs.
680 * @param str The literal string to match against
681 * @param mask The glob or CIDR pattern to match against.
682 * @param map The character map to use when matching.
684 static bool MatchCIDR(const std::string &str, const std::string &mask, unsigned const char *map = NULL);
685 static bool MatchCIDR(const char *str, const char *mask, unsigned const char *map = NULL);
687 /** Return true if the given parameter is a valid nick!user\@host mask
688 * @param mask A nick!user\@host masak to match against
689 * @return True i the mask is valid
691 bool IsValidMask(const std::string &mask);
693 /** Strips all color codes from the given string
694 * @param sentence The string to strip from
696 static void StripColor(std::string &sentence);
698 /** Parses color codes from string values to actual color codes
699 * @param input The data to process
701 static void ProcessColors(file_cache& input);
703 /** Rehash the local server
707 /** Check if the given nickmask matches too many users, send errors to the given user
708 * @param nick A nickmask to match against
709 * @param user A user to send error text to
710 * @return True if the nick matches too many users
712 bool NickMatchesEveryone(const std::string &nick, User* user);
714 /** Check if the given IP mask matches too many users, send errors to the given user
715 * @param ip An ipmask to match against
716 * @param user A user to send error text to
717 * @return True if the ip matches too many users
719 bool IPMatchesEveryone(const std::string &ip, User* user);
721 /** Check if the given hostmask matches too many users, send errors to the given user
722 * @param mask A hostmask to match against
723 * @param user A user to send error text to
724 * @return True if the host matches too many users
726 bool HostMatchesEveryone(const std::string &mask, User* user);
728 /** Calculate a duration in seconds from a string in the form 1y2w3d4h6m5s
729 * @param str A string containing a time in the form 1y2w3d4h6m5s
730 * (one year, two weeks, three days, four hours, six minutes and five seconds)
731 * @return The total number of seconds
733 static unsigned long Duration(const std::string& str);
735 /** Attempt to compare a password to a string from the config file.
736 * This will be passed to handling modules which will compare the data
737 * against possible hashed equivalents in the input string.
738 * @param ex The object (user, server, whatever) causing the comparison.
739 * @param data The data from the config file
740 * @param input The data input by the oper
741 * @param hashtype The hash from the config file
742 * @return 0 if the strings match, 1 or -1 if they do not
744 int PassCompare(Extensible* ex, const std::string &data, const std::string &input, const std::string &hashtype);
746 /** Check if a given server is a uline.
747 * An empty string returns true, this is by design.
748 * @param server The server to check for uline status
749 * @return True if the server is a uline OR the string is empty
751 bool ULine(const std::string& server);
753 /** Returns true if the uline is 'silent' (doesnt generate
754 * remote connect notices etc).
756 bool SilentULine(const std::string& server);
758 /** Returns the full version string of this ircd
759 * @return The version string
761 std::string GetVersionString(bool rawversion = false);
763 /** Attempt to write the process id to a given file
764 * @param filename The PID file to attempt to write to
765 * @return This function may bail if the file cannot be written
767 void WritePID(const std::string &filename);
769 /** This constructor initialises all the subsystems and reads the config file.
770 * @param argc The argument count passed to main()
771 * @param argv The argument list passed to main()
772 * @throw <anything> If anything is thrown from here and makes it to
773 * you, you should probably just give up and go home. Yes, really.
774 * It's that bad. Higher level classes should catch any non-fatal exceptions.
776 InspIRCd(int argc, char** argv);
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 text Text of the numeric
784 void SendWhoisLine(User* user, User* dest, int numeric, const std::string &text);
786 /** Send a line of WHOIS data to a user.
787 * @param user user to send the line to
788 * @param dest user being WHOISed
789 * @param numeric Numeric to send
790 * @param format Format string for the numeric
791 * @param ... Parameters for the format string
793 void SendWhoisLine(User* user, User* dest, int numeric, const char* format, ...) CUSTOM_PRINTF(5, 6);
795 /** Called to check whether a channel restriction mode applies to a user
796 * @param User that is attempting some action
797 * @param Channel that the action is being performed on
800 caller3<ModResult, User*, Channel*, const std::string&> OnCheckExemption;
802 /** Restart the server.
803 * This function will not return. If an error occurs,
804 * it will throw an instance of CoreException.
805 * @param reason The restart reason to show to all clients
806 * @throw CoreException An instance of CoreException indicating the error from execv().
808 void Restart(const std::string &reason);
810 /** Prepare the ircd for restart or shutdown.
811 * This function unloads all modules which can be unloaded,
812 * closes all open sockets, and closes the logfile.
816 /** Return a time_t as a human-readable string.
818 std::string TimeString(time_t curtime);
820 /** Begin execution of the server.
821 * NOTE: this function NEVER returns. Internally,
822 * it will repeatedly loop.
823 * @return The return value for this function is undefined.
827 char* GetReadBuffer()
829 return this->ReadBuffer;
832 friend class TestSuite;
838 class CommandModule : public Module
842 CommandModule() : cmd(this)
848 ServerInstance->Modules->AddService(cmd);
853 return Version(cmd.name, VF_VENDOR|VF_CORE);