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/>.
48 #include "intrusive_list.h"
51 #include "aligned_storage.h"
56 CoreExport extern InspIRCd* ServerInstance;
58 /** Base class for manager classes that are still accessed using -> but are no longer pointers
65 return static_cast<T*>(this);
71 #include "consolecolors.h"
72 #include "cull_list.h"
73 #include "extensible.h"
74 #include "fileutils.h"
85 #include "usermanager.h"
87 #include "command_parse.h"
89 #include "socketengine.h"
91 #include "filelogger.h"
94 #include "clientprotocol.h"
95 #include "threadengine.h"
96 #include "configreader.h"
97 #include "inspstring.h"
100 #include "isupportmanager.h"
102 /** This class contains various STATS counters
103 * It is used by the InspIRCd class, which internally
104 * has an instance of it.
109 /** Number of accepted connections
111 unsigned long Accept;
112 /** Number of failed accepts
114 unsigned long Refused;
115 /** Number of unknown commands seen
117 unsigned long Unknown;
118 /** Number of nickname collisions handled
120 unsigned long Collisions;
121 /** Number of DNS queries sent out
124 /** Number of good DNS replies received
125 * NOTE: This may not tally to the number sent out,
126 * due to timeouts and other latency issues.
128 unsigned long DnsGood;
129 /** Number of bad (negative) DNS replies received
130 * NOTE: This may not tally to the number sent out,
131 * due to timeouts and other latency issues.
133 unsigned long DnsBad;
134 /** Number of inbound connections seen
136 unsigned long Connects;
137 /** Total bytes of data transmitted
140 /** Total bytes of data received
144 /** Cpu usage at last sample
147 /** Time QP sample was read
149 LARGE_INTEGER LastSampled;
152 LARGE_INTEGER QPFrequency;
154 /** Cpu usage at last sample
157 /** Time last sample was read
159 timespec LastSampled;
161 /** The constructor initializes all the counts to zero
164 : Accept(0), Refused(0), Unknown(0), Collisions(0), Dns(0),
165 DnsGood(0), DnsBad(0), Connects(0), Sent(0), Recv(0)
170 /** The main class of the irc server.
171 * This class contains instances of all the other classes in this software.
172 * Amongst other things, it contains a ModeParser, a DNS object, a CommandParser
173 * object, and a list of active Module objects, and facilities for Module
174 * objects to interact with the core system it implements.
176 class CoreExport InspIRCd
179 /** Set up the signal handlers
183 /** Daemonize the ircd and close standard input/output streams
184 * @return True if the program daemonized succesfully
188 /** The current time, updated in the mainloop
190 struct timespec TIME;
192 /** A 64k buffer used to read socket data into
193 * NOTE: update ValidateNetBufferSize if you change this
195 char ReadBuffer[65535];
197 ClientProtocol::RFCEvents rfcevents;
199 /** Check we aren't running as root, and exit if we are
200 * with exit code EXIT_STATUS_ROOT.
208 /** Global cull list, will be processed on next iteration
210 CullList GlobalCulls;
211 /** Actions that must happen outside of the current call stack */
212 ActionList AtomicActions;
214 /** 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
217 * SendMode expects a User* to send the numeric replies
218 * back to, so we create it a fake user that isnt in the user
219 * hash and set its descriptor to FD_MAGIC_NUMBER so the data
220 * falls into the abyss :p
222 FakeUser* FakeClient;
224 /** Find a user in the UUID hash
225 * @param uid The UUID to find
226 * @return A pointer to the user, or NULL if the user does not exist
228 User* FindUUID(const std::string &uid);
230 /** Time this ircd was booted
234 /** Config file pathname specified on the commandline or via ./configure
236 std::string ConfigFileName;
238 ExtensionManager Extensions;
240 /** Mode handler, handles mode setting and removal
244 /** Command parser, handles client to server commands
246 CommandParser Parser;
248 /** Thread engine, Handles threading where required
250 ThreadEngine Threads;
252 /** The thread/class used to read config files in REHASH and on startup
254 ConfigReaderThread* ConfigThread;
256 /** LogManager handles logging.
260 /** ModuleManager contains everything related to loading/unloading
263 ModuleManager Modules;
265 /** BanCacheManager is used to speed up checking of restrictions on connection
268 BanCacheManager BanCache;
270 /** Stats class, holds miscellaneous stats counters
274 /** Server Config class, holds configuration file data
276 ServerConfig* Config;
278 /** Snomask manager - handles routing of snomask messages
283 /** Timer manager class, triggers Timer timer events
287 /** X-line manager. Handles G/K/Q/E-line setting, removal and matching
289 XLineManager* XLines;
291 /** User manager. Various methods and data associated with users.
295 /** Channel list, a hash_map containing all channels XXX move to channel manager class
299 /** List of the open ports
301 std::vector<ListenSocket*> ports;
303 /** Set to the current signal recieved
305 static sig_atomic_t s_signal;
307 /** Protocol interface, overridden by server protocol modules
309 ProtocolInterface* PI;
311 /** Default implementation of the ProtocolInterface, does nothing
313 ProtocolInterface DefaultProtocolInterface;
315 /** Manages the generation and transmission of ISUPPORT. */
316 ISupportManager ISupport;
318 /** Get the current time
319 * Because this only calls time() once every time around the mainloop,
320 * it is much faster than calling time() directly.
321 * @return The current time as an epoch value (time_t)
323 inline time_t Time() { return TIME.tv_sec; }
324 /** The fractional time at the start of this mainloop iteration (nanoseconds) */
325 inline long Time_ns() { return TIME.tv_nsec; }
326 /** Update the current time. Don't call this unless you have reason to do so. */
329 /** Generate a random string with the given length
330 * @param length The length in bytes
331 * @param printable if false, the string will use characters 0-255; otherwise,
332 * it will be limited to 0x30-0x7E ('0'-'~', nonspace printable characters)
334 std::string GenRandomStr(unsigned int length, bool printable = true);
335 /** Generate a random integer.
336 * This is generally more secure than rand()
338 unsigned long GenRandomInt(unsigned long max);
340 /** Fill a buffer with random bits */
341 TR1NS::function<void(char*, size_t)> GenRandom;
343 /** Fills the output buffer with the specified number of random characters.
344 * This is the default function for InspIRCd::GenRandom.
345 * @param output The output buffer to store random characters in.
346 * @param max The maximum number of random characters to put in the buffer.
348 static void DefaultGenRandom(char* output, size_t max);
350 /** Bind to a specific port from a config tag.
351 * @param tag the tag that contains bind information.
352 * @param sa The endpoint to listen on.
353 * @param old_ports Previously listening ports that may be on the same endpoint.
355 bool BindPort(ConfigTag* tag, const irc::sockets::sockaddrs& sa, std::vector<ListenSocket*>& old_ports);
357 /** Bind all ports specified in the configuration file.
358 * @return The number of ports bound without error
360 int BindPorts(FailedPortList &failed_ports);
362 /** Find a user in the nick hash.
363 * If the user cant be found in the nick hash check the uuid hash
364 * @param nick The nickname to find
365 * @return A pointer to the user, or NULL if the user does not exist
367 User* FindNick(const std::string &nick);
369 /** Find a user in the nick hash ONLY
371 User* FindNickOnly(const std::string &nick);
373 /** Find a channel in the channels hash
374 * @param chan The channel to find
375 * @return A pointer to the channel, or NULL if the channel does not exist
377 Channel* FindChan(const std::string &chan);
379 /** Get a hash map containing all channels, keyed by their name
380 * @return A hash map mapping channel names to Channel pointers
382 chan_hash& GetChans() { return chanlist; }
384 /** Determines whether an channel name is valid. */
385 TR1NS::function<bool(const std::string&)> IsChannel;
387 /** Determines whether a channel name is valid according to the RFC 1459 rules.
388 * This is the default function for InspIRCd::IsChannel.
389 * @param channel The channel name to validate.
390 * @return True if the channel name is valid according to RFC 1459 rules; otherwise, false.
392 static bool DefaultIsChannel(const std::string& channel);
394 /** Determines whether a hostname is valid according to RFC 5891 rules.
395 * @param host The hostname to validate.
396 * @return True if the hostname is valid; otherwise, false.
398 static bool IsHost(const std::string& host);
400 /** Return true if str looks like a server ID
401 * @param sid string to check against
403 static bool IsSID(const std::string& sid);
405 /** Handles incoming signals after being set
406 * @param signal the signal recieved
408 void SignalHandler(int signal);
410 /** Sets the signal recieved
411 * @param signal the signal recieved
413 static void SetSignal(int signal);
415 /** Causes the server to exit after unloading modules and
416 * closing all open file descriptors.
418 * @param status The exit code to give to the operating system
419 * (See the ExitStatus enum for valid values)
421 void Exit(int status);
423 /** Formats the input string with the specified arguments.
424 * @param formatString The string to format
425 * @param ... A variable number of format arguments.
426 * @return The formatted string
428 static std::string Format(const char* formatString, ...) CUSTOM_PRINTF(1, 2);
429 static std::string Format(va_list& vaList, const char* formatString) CUSTOM_PRINTF(2, 0);
431 /** Determines whether a nickname is valid. */
432 TR1NS::function<bool(const std::string&)> IsNick;
434 /** Determines whether a nickname is valid according to the RFC 1459 rules.
435 * This is the default function for InspIRCd::IsNick.
436 * @param nick The nickname to validate.
437 * @return True if the nickname is valid according to RFC 1459 rules; otherwise, false.
439 static bool DefaultIsNick(const std::string& nick);
441 /** Determines whether an ident is valid. */
442 TR1NS::function<bool(const std::string&)> IsIdent;
444 /** Determines whether a ident is valid according to the RFC 1459 rules.
445 * This is the default function for InspIRCd::IsIdent.
446 * @param ident The ident to validate.
447 * @return True if the ident is valid according to RFC 1459 rules; otherwise, false.
449 static bool DefaultIsIdent(const std::string& ident);
451 /** Match two strings using pattern matching, optionally, with a map
452 * to check case against (may be NULL). If map is null, match will be case insensitive.
453 * @param str The literal string to match against
454 * @param mask The glob pattern to match against.
455 * @param map The character map to use when matching.
457 static bool Match(const std::string& str, const std::string& mask, unsigned const char* map = NULL);
458 static bool Match(const char* str, const char* mask, unsigned const char* map = NULL);
460 /** Match two strings using pattern matching, optionally, with a map
461 * to check case against (may be NULL). If map is null, match will be case insensitive.
462 * Supports CIDR patterns as well as globs.
463 * @param str The literal string to match against
464 * @param mask The glob or CIDR pattern to match against.
465 * @param map The character map to use when matching.
467 static bool MatchCIDR(const std::string& str, const std::string& mask, unsigned const char* map = NULL);
468 static bool MatchCIDR(const char* str, const char* mask, unsigned const char* map = NULL);
470 /** Matches a hostname and IP against a space delimited list of hostmasks.
471 * @param masks The space delimited masks to match against.
472 * @param hostname The hostname to try and match.
473 * @param ipaddr The IP address to try and match.
475 static bool MatchMask(const std::string& masks, const std::string& hostname, const std::string& ipaddr);
477 /** Return true if the given parameter is a valid nick!user\@host mask
478 * @param mask A nick!user\@host masak to match against
479 * @return True i the mask is valid
481 static bool IsValidMask(const std::string& mask);
483 /** Strips all color and control codes except 001 from the given string
484 * @param sentence The string to strip from
486 static void StripColor(std::string &sentence);
488 /** Parses color codes from string values to actual color codes
489 * @param input The data to process
491 static void ProcessColors(file_cache& input);
493 /** Rehash the local server
494 * @param uuid The uuid of the user who started the rehash, can be empty
496 void Rehash(const std::string& uuid = "");
498 /** Calculate a duration in seconds from a string in the form 1y2w3d4h6m5s
499 * @param str A string containing a time in the form 1y2w3d4h6m5s
500 * (one year, two weeks, three days, four hours, six minutes and five seconds)
501 * @return The total number of seconds
503 static unsigned long Duration(const std::string& str);
505 /** Calculate a duration in seconds from a string in the form 1y2w3d4h6m5s
506 * @param str A string containing a time in the form 1y2w3d4h6m5s
507 * (one year, two weeks, three days, four hours, six minutes and five seconds)
508 * @param duration The location to place the parsed duration valur
509 * @return Whether the duration was a valid format or not
511 static bool Duration(const std::string& str, unsigned long& duration);
513 /** Determines whether a string contains a valid duration.
514 * @param str A string containing a time in the form 1y2w3d4h6m5s
515 * @return True if the string is a valid duration; otherwise, false.
517 static bool IsValidDuration(const std::string& str);
519 /** Attempt to compare a password to a string from the config file.
520 * This will be passed to handling modules which will compare the data
521 * against possible hashed equivalents in the input string.
522 * @param ex The object (user, server, whatever) causing the comparison.
523 * @param data The data from the config file
524 * @param input The data input by the oper
525 * @param hashtype The hash from the config file
526 * @return True if the strings match, false if they do not
528 bool PassCompare(Extensible* ex, const std::string& data, const std::string& input, const std::string& hashtype);
530 /** Returns the full version string of this ircd
531 * @return The version string
533 std::string GetVersionString(bool getFullVersion = false);
535 /** Attempt to write the process id to a given file
536 * @param filename The PID file to attempt to write to
537 * @param exitonfail If true and the PID fail cannot be written log to stdout and exit, otherwise only log on failure
538 * @return This function may bail if the file cannot be written
540 void WritePID(const std::string& filename, bool exitonfail = true);
542 /** This constructor initialises all the subsystems and reads the config file.
543 * @param argc The argument count passed to main()
544 * @param argv The argument list passed to main()
545 * @throw <anything> If anything is thrown from here and makes it to
546 * you, you should probably just give up and go home. Yes, really.
547 * It's that bad. Higher level classes should catch any non-fatal exceptions.
549 InspIRCd(int argc, char** argv);
551 /** Prepare the ircd for restart or shutdown.
552 * This function unloads all modules which can be unloaded,
553 * closes all open sockets, and closes the logfile.
557 /** Return a time_t as a human-readable string.
558 * @param format The format to retrieve the date/time in. See `man 3 strftime`
559 * for more information. If NULL, "%a %b %d %T %Y" is assumed.
560 * @param curtime The timestamp to convert to a human-readable string.
561 * @param utc True to convert the time to string as-is, false to convert it to local time first.
562 * @return A string representing the given date/time.
564 static std::string TimeString(time_t curtime, const char* format = NULL, bool utc = false);
566 /** Compare two strings in a timing-safe way. If the lengths of the strings differ, the function
567 * returns false immediately (leaking information about the length), otherwise it compares each
568 * character and only returns after all characters have been compared.
569 * @param one First string
570 * @param two Second string
571 * @return True if the strings match, false if they don't
573 static bool TimingSafeCompare(const std::string& one, const std::string& two);
575 /** Begin execution of the server.
576 * NOTE: this function NEVER returns. Internally,
577 * it will repeatedly loop.
581 char* GetReadBuffer()
583 return this->ReadBuffer;
586 ClientProtocol::RFCEvents& GetRFCEvents() { return rfcevents; }
591 inline void stdalgo::culldeleter::operator()(classbase* item)
594 ServerInstance->GlobalCulls.AddItem(item);
597 inline void Channel::Write(ClientProtocol::EventProvider& protoevprov, ClientProtocol::Message& msg, char status, const CUList& except_list)
599 ClientProtocol::Event event(protoevprov, msg);
600 Write(event, status, except_list);
603 inline void LocalUser::Send(ClientProtocol::EventProvider& protoevprov, ClientProtocol::Message& msg)
605 ClientProtocol::Event event(protoevprov, msg);
609 #include "numericbuilder.h"
610 #include "clientprotocolmsg.h"
611 #include "clientprotocolevent.h"