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/>.
29 #define _FILE_OFFSET_BITS 64
30 #ifndef _LARGEFILE_SOURCE
31 #define _LARGEFILE_SOURCE
38 #include "inspircd_win32wrapper.h"
39 /** Windows defines these already */
44 #define CUSTOM_PRINTF(STRING, FIRST) __attribute__((format(printf, STRING, FIRST)))
46 #define CUSTOM_PRINTF(STRING, FIRST)
49 // Required system headers.
62 # include <unordered_map>
64 # include <tr1/unordered_map>
75 #include "inspircd_config.h"
76 #include "inspircd_version.h"
78 #include "consolecolors.h"
80 CoreExport extern InspIRCd* ServerInstance;
83 #include "cull_list.h"
84 #include "extensible.h"
92 #include "usermanager.h"
95 #include "command_parse.h"
97 #include "socketengine.h"
99 #include "filelogger.h"
101 #include "threadengine.h"
102 #include "configreader.h"
103 #include "inspstring.h"
104 #include "protocol.h"
107 #warning Potentially broken system, PATH_MAX undefined
108 #define PATH_MAX 4096
112 * Used to define the maximum number of parameters a command may have.
114 #define MAXPARAMETERS 127
116 /** Returned by some functions to indicate failure.
120 /** Support for librodent -
121 * see http://www.chatspike.net/index.php?z=64
123 #define ETIREDHAMSTERS EAGAIN
125 /** Template function to convert any input type to std::string
127 template<typename T> inline std::string ConvNumeric(const T &in)
129 if (in == 0) return "0";
134 *out = "0123456789"[ std::abs( (long)quotient % 10 ) ];
141 std::reverse(res,out);
145 /** Template function to convert any input type to std::string
147 inline std::string ConvToStr(const int in)
149 return ConvNumeric(in);
152 /** Template function to convert any input type to std::string
154 inline std::string ConvToStr(const long in)
156 return ConvNumeric(in);
159 /** Template function to convert any input type to std::string
161 inline std::string ConvToStr(const char* in)
166 /** Template function to convert any input type to std::string
168 inline std::string ConvToStr(const bool in)
170 return (in ? "1" : "0");
173 /** Template function to convert any input type to std::string
175 inline std::string ConvToStr(char in)
177 return std::string(in,1);
180 /** Template function to convert any input type to std::string
182 template <class T> inline std::string ConvToStr(const T &in)
184 std::stringstream tmp;
185 if (!(tmp << in)) return std::string();
189 /** Template function to convert any input type to any other type
190 * (usually an integer or numeric type)
192 template<typename T> inline long ConvToInt(const T &in)
194 std::stringstream tmp;
195 if (!(tmp << in)) return 0;
196 return atol(tmp.str().c_str());
199 /** This class contains various STATS counters
200 * It is used by the InspIRCd class, which internally
201 * has an instance of it.
206 /** Number of accepted connections
208 unsigned long statsAccept;
209 /** Number of failed accepts
211 unsigned long statsRefused;
212 /** Number of unknown commands seen
214 unsigned long statsUnknown;
215 /** Number of nickname collisions handled
217 unsigned long statsCollisions;
218 /** Number of DNS queries sent out
220 unsigned long statsDns;
221 /** Number of good DNS replies received
222 * NOTE: This may not tally to the number sent out,
223 * due to timeouts and other latency issues.
225 unsigned long statsDnsGood;
226 /** Number of bad (negative) DNS replies received
227 * NOTE: This may not tally to the number sent out,
228 * due to timeouts and other latency issues.
230 unsigned long statsDnsBad;
231 /** Number of inbound connections seen
233 unsigned long statsConnects;
234 /** Total bytes of data transmitted
236 unsigned long statsSent;
237 /** Total bytes of data received
239 unsigned long statsRecv;
241 /** Cpu usage at last sample
244 /** Time QP sample was read
246 LARGE_INTEGER LastSampled;
249 LARGE_INTEGER QPFrequency;
251 /** Cpu usage at last sample
254 /** Time last sample was read
256 timespec LastSampled;
258 /** The constructor initializes all the counts to zero
261 : statsAccept(0), statsRefused(0), statsUnknown(0), statsCollisions(0), statsDns(0),
262 statsDnsGood(0), statsDnsBad(0), statsConnects(0), statsSent(0), statsRecv(0)
267 DEFINE_HANDLER2(IsNickHandler, bool, const char*, size_t);
268 DEFINE_HANDLER2(GenRandomHandler, void, char*, size_t);
269 DEFINE_HANDLER1(IsIdentHandler, bool, const char*);
270 DEFINE_HANDLER1(FloodQuitUserHandler, void, User*);
271 DEFINE_HANDLER2(IsChannelHandler, bool, const char*, size_t);
272 DEFINE_HANDLER1(IsSIDHandler, bool, const std::string&);
273 DEFINE_HANDLER1(RehashHandler, void, const std::string&);
274 DEFINE_HANDLER3(OnCheckExemptionHandler, ModResult, User*, Channel*, const std::string&);
278 /** The main class of the irc server.
279 * This class contains instances of all the other classes in this software.
280 * Amongst other things, it contains a ModeParser, a DNS object, a CommandParser
281 * object, and a list of active Module objects, and facilities for Module
282 * objects to interact with the core system it implements.
284 class CoreExport InspIRCd
287 /** Holds the current UID. Used to generate the next one.
289 char current_uid[UUID_LENGTH];
291 /** Set up the signal handlers
295 /** Daemonize the ircd and close standard input/output streams
296 * @return True if the program daemonized succesfully
300 /** Iterate the list of BufferedSocket objects, removing ones which have timed out
301 * @param TIME the current time
303 void DoSocketTimeouts(time_t TIME);
305 /** Increments the current UID by one.
307 void IncrementUID(int pos);
309 /** Perform background user events such as PING checks
311 void DoBackgroundUserStuff();
313 /** Returns true when all modules have done pre-registration checks on a user
314 * @param user The user to verify
315 * @return True if all modules have finished checking this user
317 bool AllModulesReportReady(LocalUser* user);
319 /** The current time, updated in the mainloop
321 struct timespec TIME;
323 /** A 64k buffer used to read socket data into
324 * NOTE: update ValidateNetBufferSize if you change this
326 char ReadBuffer[65535];
330 /** Global cull list, will be processed on next iteration
332 CullList GlobalCulls;
333 /** Actions that must happen outside of the current call stack */
334 ActionList AtomicActions;
338 IsNickHandler HandleIsNick;
339 IsIdentHandler HandleIsIdent;
340 FloodQuitUserHandler HandleFloodQuitUser;
341 OnCheckExemptionHandler HandleOnCheckExemption;
342 IsChannelHandler HandleIsChannel;
343 IsSIDHandler HandleIsSID;
344 RehashHandler HandleRehash;
345 GenRandomHandler HandleGenRandom;
347 /** 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
350 * SendMode expects a User* to send the numeric replies
351 * back to, so we create it a fake user that isnt in the user
352 * hash and set its descriptor to FD_MAGIC_NUMBER so the data
353 * falls into the abyss :p
355 FakeUser* FakeClient;
357 /** Returns the next available UID for this server.
359 std::string GetUID();
361 static const char LogHeader[];
363 /** Find a user in the UUID hash
364 * @param uid The UUID to find
365 * @return A pointer to the user, or NULL if the user does not exist
367 User* FindUUID(const std::string &uid);
369 /** Find a user in the UUID hash
370 * @param uid The UUID to find
371 * @return A pointer to the user, or NULL if the user does not exist
373 User* FindUUID(const char *uid);
375 /** Build the ISUPPORT string by triggering all modules On005Numeric events
377 void BuildISupport();
379 /** Time this ircd was booted
383 /** Config file pathname specified on the commandline or via ./configure
385 std::string ConfigFileName;
387 ExtensionManager Extensions;
389 /** Mode handler, handles mode setting and removal
393 /** Command parser, handles client to server commands
395 CommandParser* Parser;
397 /** Socket engine, handles socket activity events
401 /** Thread engine, Handles threading where required
403 ThreadEngine* Threads;
405 /** The thread/class used to read config files in REHASH and on startup
407 ConfigReaderThread* ConfigThread;
409 /** LogManager handles logging.
413 /** ModuleManager contains everything related to loading/unloading
416 ModuleManager* Modules;
418 /** BanCacheManager is used to speed up checking of restrictions on connection
421 BanCacheManager *BanCache;
423 /** Stats class, holds miscellaneous stats counters
427 /** Server Config class, holds configuration file data
429 ServerConfig* Config;
431 /** Snomask manager - handles routing of snomask messages
436 /** DNS class, provides resolver facilities to the core and modules
440 /** Timer manager class, triggers Timer timer events
442 TimerManager* Timers;
444 /** X-Line manager. Handles G/K/Q/E line setting, removal and matching
446 XLineManager* XLines;
448 /** User manager. Various methods and data associated with users.
452 /** Channel list, a hash_map containing all channels XXX move to channel manager class
456 /** List of the open ports
458 std::vector<ListenSocket*> ports;
460 /** Set to the current signal recieved
464 /** Protocol interface, overridden by server protocol modules
466 ProtocolInterface* PI;
468 /** Holds extensible for user nickforced
470 LocalIntExt NICKForced;
472 /** Holds extensible for user operquit
474 LocalStringExt OperQuit;
476 /** Get the current time
477 * Because this only calls time() once every time around the mainloop,
478 * it is much faster than calling time() directly.
479 * @return The current time as an epoch value (time_t)
481 inline time_t Time() { return TIME.tv_sec; }
482 /** The fractional time at the start of this mainloop iteration (nanoseconds) */
483 inline long Time_ns() { return TIME.tv_nsec; }
484 /** Update the current time. Don't call this unless you have reason to do so. */
487 /** Generate a random string with the given length
488 * @param length The length in bytes
489 * @param printable if false, the string will use characters 0-255; otherwise,
490 * it will be limited to 0x30-0x7E ('0'-'~', nonspace printable characters)
492 std::string GenRandomStr(int length, bool printable = true);
493 /** Generate a random integer.
494 * This is generally more secure than rand()
496 unsigned long GenRandomInt(unsigned long max);
498 /** Fill a buffer with random bits */
499 caller2<void, char*, size_t> GenRandom;
501 /** Bind all ports specified in the configuration file.
502 * @return The number of ports bound without error
504 int BindPorts(FailedPortList &failed_ports);
506 /** Binds a socket on an already open file descriptor
507 * @param sockfd A valid file descriptor of an open socket
508 * @param port The port number to bind to
509 * @param addr The address to bind to (IP only)
510 * @param dolisten Should this port be listened on?
511 * @return True if the port was bound successfully
513 bool BindSocket(int sockfd, int port, const char* addr, bool dolisten = true);
515 /** Gets the GECOS (description) field of the given server.
516 * If the servername is not that of the local server, the name
517 * is passed to handling modules which will attempt to determine
518 * the GECOS that bleongs to the given servername.
519 * @param servername The servername to find the description of
520 * @return The description of this server, or of the local server
522 std::string GetServerDescription(const std::string& servername);
524 /** Find a user in the nick hash.
525 * If the user cant be found in the nick hash check the uuid hash
526 * @param nick The nickname to find
527 * @return A pointer to the user, or NULL if the user does not exist
529 User* FindNick(const std::string &nick);
531 /** Find a user in the nick hash.
532 * If the user cant be found in the nick hash check the uuid hash
533 * @param nick The nickname to find
534 * @return A pointer to the user, or NULL if the user does not exist
536 User* FindNick(const char* nick);
538 /** Find a user in the nick hash ONLY
540 User* FindNickOnly(const char* nick);
542 /** Find a user in the nick hash ONLY
544 User* FindNickOnly(const std::string &nick);
546 /** Find a channel in the channels hash
547 * @param chan The channel to find
548 * @return A pointer to the channel, or NULL if the channel does not exist
550 Channel* FindChan(const std::string &chan);
552 /** Find a channel in the channels hash
553 * @param chan The channel to find
554 * @return A pointer to the channel, or NULL if the channel does not exist
556 Channel* FindChan(const char* chan);
558 /** Check we aren't running as root, and exit if we are
559 * @return Depending on the configuration, this function may never return
563 /** Determine the right path for, and open, the logfile
564 * @param argv The argv passed to main() initially, used to calculate program path
565 * @param argc The argc passed to main() initially, used to calculate program path
566 * @return True if the log could be opened, false if otherwise
568 bool OpenLog(char** argv, int argc);
570 /** Return true if a channel name is valid
571 * @param chname A channel name to verify
572 * @return True if the name is valid
574 caller2<bool, const char*, size_t> IsChannel;
576 /** Return true if str looks like a server ID
577 * @param string to check against
579 caller1<bool, const std::string&> IsSID;
581 /** Rehash the local server
583 caller1<void, const std::string&> Rehash;
585 /** Handles incoming signals after being set
586 * @param signal the signal recieved
588 void SignalHandler(int signal);
590 /** Sets the signal recieved
591 * @param signal the signal recieved
593 static void SetSignal(int signal);
595 /** Causes the server to exit after unloading modules and
596 * closing all open file descriptors.
598 * @param status The exit code to give to the operating system
599 * (See the ExitStatus enum for valid values)
601 void Exit(int status);
603 /** Causes the server to exit immediately with exit code 0.
604 * The status code is required for signal handlers, and ignored.
606 static void QuickExit(int status);
608 /** Return a count of channels on the network
609 * @return The number of channels
613 /** Send an error notice to all local users, opered and unopered
614 * @param s The error string to send
616 void SendError(const std::string &s);
618 /** Return true if a nickname is valid
619 * @param n A nickname to verify
620 * @return True if the nick is valid
622 caller2<bool, const char*, size_t> IsNick;
624 /** Return true if an ident is valid
625 * @param An ident to verify
626 * @return True if the ident is valid
628 caller1<bool, const char*> IsIdent;
630 /** Add a dns Resolver class to this server's active set
631 * @param r The resolver to add
632 * @param cached If this value is true, then the cache will
633 * be searched for the DNS result, immediately. If the value is
634 * false, then a request will be sent to the nameserver, and the
635 * result will not be immediately available. You should usually
636 * use the boolean value which you passed to the Resolver
637 * constructor, which Resolver will set appropriately depending
638 * on if cached results are available and haven't expired. It is
639 * however safe to force this value to false, forcing a remote DNS
640 * lookup, but not an update of the cache.
641 * @return True if the operation completed successfully. Note that
642 * if this method returns true, you should not attempt to access
643 * the resolver class you pass it after this call, as depending upon
644 * the request given, the object may be deleted!
646 bool AddResolver(Resolver* r, bool cached);
648 /** Add a command to this server's command parser
649 * @param f A Command command handler object to add
650 * @throw ModuleException Will throw ModuleExcption if the command already exists
652 inline void AddCommand(Command *f)
654 Modules->AddService(*f);
657 /** Send a modechange.
658 * The parameters provided are identical to that sent to the
659 * handler for class cmd_mode.
660 * @param parameters The mode parameters
661 * @param user The user to send error messages to
663 void SendMode(const std::vector<std::string>& parameters, User *user);
665 /** Send a modechange and route it to the network.
666 * The parameters provided are identical to that sent to the
667 * handler for class cmd_mode.
668 * @param parameters The mode parameters
669 * @param user The user to send error messages to
671 void SendGlobalMode(const std::vector<std::string>& parameters, User *user);
673 /** Match two strings using pattern matching, optionally, with a map
674 * to check case against (may be NULL). If map is null, match will be case insensitive.
675 * @param str The literal string to match against
676 * @param mask The glob pattern to match against.
677 * @param map The character map to use when matching.
679 static bool Match(const std::string &str, const std::string &mask, unsigned const char *map = NULL);
680 static bool Match(const char *str, const char *mask, unsigned const char *map = NULL);
682 /** Match two strings using pattern matching, optionally, with a map
683 * to check case against (may be NULL). If map is null, match will be case insensitive.
684 * Supports CIDR patterns as well as globs.
685 * @param str The literal string to match against
686 * @param mask The glob or CIDR pattern to match against.
687 * @param map The character map to use when matching.
689 static bool MatchCIDR(const std::string &str, const std::string &mask, unsigned const char *map = NULL);
690 static bool MatchCIDR(const char *str, const char *mask, unsigned const char *map = NULL);
692 /** Call the handler for a given command.
693 * @param commandname The command whos handler you wish to call
694 * @param parameters The mode parameters
695 * @param user The user to execute the command as
696 * @return True if the command handler was called successfully
698 CmdResult CallCommandHandler(const std::string &commandname, const std::vector<std::string>& parameters, User* user);
700 /** Return true if the command is a module-implemented command and the given parameters are valid for it
701 * @param commandname The command name to check
702 * @param pcnt The parameter count
703 * @param user The user to test-execute the command as
704 * @return True if the command handler is a module command, and there are enough parameters and the user has permission to the command
706 bool IsValidModuleCommand(const std::string &commandname, int pcnt, User* user);
708 /** Return true if the given parameter is a valid nick!user\@host mask
709 * @param mask A nick!user\@host masak to match against
710 * @return True i the mask is valid
712 bool IsValidMask(const std::string &mask);
714 /** Strips all color codes from the given string
715 * @param sentence The string to strip from
717 static void StripColor(std::string &sentence);
719 /** Parses color codes from string values to actual color codes
720 * @param input The data to process
722 static void ProcessColors(file_cache& input);
724 /** Rehash the local server
728 /** Check if the given nickmask matches too many users, send errors to the given user
729 * @param nick A nickmask to match against
730 * @param user A user to send error text to
731 * @return True if the nick matches too many users
733 bool NickMatchesEveryone(const std::string &nick, User* user);
735 /** Check if the given IP mask matches too many users, send errors to the given user
736 * @param ip An ipmask to match against
737 * @param user A user to send error text to
738 * @return True if the ip matches too many users
740 bool IPMatchesEveryone(const std::string &ip, User* user);
742 /** Check if the given hostmask matches too many users, send errors to the given user
743 * @param mask A hostmask to match against
744 * @param user A user to send error text to
745 * @return True if the host matches too many users
747 bool HostMatchesEveryone(const std::string &mask, User* user);
749 /** Calculate a duration in seconds from a string in the form 1y2w3d4h6m5s
750 * @param str A string containing a time in the form 1y2w3d4h6m5s
751 * (one year, two weeks, three days, four hours, six minutes and five seconds)
752 * @return The total number of seconds
754 long Duration(const std::string &str);
756 /** Attempt to compare a password to a string from the config file.
757 * This will be passed to handling modules which will compare the data
758 * against possible hashed equivalents in the input string.
759 * @param ex The object (user, server, whatever) causing the comparison.
760 * @param data The data from the config file
761 * @param input The data input by the oper
762 * @param hashtype The hash from the config file
763 * @return 0 if the strings match, 1 or -1 if they do not
765 int PassCompare(Extensible* ex, const std::string &data, const std::string &input, const std::string &hashtype);
767 /** Check if a given server is a uline.
768 * An empty string returns true, this is by design.
769 * @param server The server to check for uline status
770 * @return True if the server is a uline OR the string is empty
772 bool ULine(const std::string& server);
774 /** Returns true if the uline is 'silent' (doesnt generate
775 * remote connect notices etc).
777 bool SilentULine(const std::string& server);
779 /** Returns the full version string of this ircd
780 * @return The version string
782 std::string GetVersionString(bool rawversion = false);
784 /** Attempt to write the process id to a given file
785 * @param filename The PID file to attempt to write to
786 * @return This function may bail if the file cannot be written
788 void WritePID(const std::string &filename);
790 /** This constructor initialises all the subsystems and reads the config file.
791 * @param argc The argument count passed to main()
792 * @param argv The argument list passed to main()
793 * @throw <anything> If anything is thrown from here and makes it to
794 * you, you should probably just give up and go home. Yes, really.
795 * It's that bad. Higher level classes should catch any non-fatal exceptions.
797 InspIRCd(int argc, char** argv);
799 /** Send a line of WHOIS data to a user.
800 * @param user user to send the line to
801 * @param dest user being WHOISed
802 * @param numeric Numeric to send
803 * @param text Text of the numeric
805 void SendWhoisLine(User* user, User* dest, int numeric, const std::string &text);
807 /** Send a line of WHOIS data to a user.
808 * @param user user to send the line to
809 * @param dest user being WHOISed
810 * @param numeric Numeric to send
811 * @param format Format string for the numeric
812 * @param ... Parameters for the format string
814 void SendWhoisLine(User* user, User* dest, int numeric, const char* format, ...) CUSTOM_PRINTF(5, 6);
818 void DoWhois(User* user, User* dest,unsigned long signon, unsigned long idle, const char* nick);
820 /** Quit a user for excess flood, and if they are not
821 * fully registered yet, temporarily zline their IP.
822 * @param current user to quit
824 caller1<void, User*> FloodQuitUser;
826 /** Called to check whether a channel restriction mode applies to a user
827 * @param User that is attempting some action
828 * @param Channel that the action is being performed on
831 caller3<ModResult, User*, Channel*, const std::string&> OnCheckExemption;
833 /** Restart the server.
834 * This function will not return. If an error occurs,
835 * it will throw an instance of CoreException.
836 * @param reason The restart reason to show to all clients
837 * @throw CoreException An instance of CoreException indicating the error from execv().
839 void Restart(const std::string &reason);
841 /** Prepare the ircd for restart or shutdown.
842 * This function unloads all modules which can be unloaded,
843 * closes all open sockets, and closes the logfile.
847 /** This copies the user and channel hash_maps into new hash maps.
848 * This frees memory used by the hash_map allocator (which it neglects
849 * to free, most of the time, using tons of ram)
851 void RehashUsersAndChans();
853 /** Resets the cached max bans value on all channels.
858 /** Return a time_t as a human-readable string.
860 std::string TimeString(time_t curtime);
862 /** Begin execution of the server.
863 * NOTE: this function NEVER returns. Internally,
864 * it will repeatedly loop.
865 * @return The return value for this function is undefined.
869 /** Adds an extban char to the 005 token.
871 void AddExtBanChar(char c);
873 char* GetReadBuffer()
875 return this->ReadBuffer;
878 friend class TestSuite;
884 class CommandModule : public Module
888 CommandModule() : cmd(this)
894 ServerInstance->Modules->AddService(cmd);
899 return Version(cmd.name, VF_VENDOR|VF_CORE);