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/>.
47 #include "intrusive_list.h"
50 #include "aligned_storage.h"
54 CoreExport extern InspIRCd* ServerInstance;
56 /** Base class for manager classes that are still accessed using -> but are no longer pointers
63 return static_cast<T*>(this);
70 #include "consolecolors.h"
72 #include "cull_list.h"
73 #include "extensible.h"
74 #include "fileutils.h"
83 #include "usermanager.h"
86 #include "command_parse.h"
88 #include "socketengine.h"
90 #include "filelogger.h"
92 #include "threadengine.h"
93 #include "configreader.h"
94 #include "inspstring.h"
97 #include "isupportmanager.h"
99 /** This class contains various STATS counters
100 * It is used by the InspIRCd class, which internally
101 * has an instance of it.
106 /** Number of accepted connections
108 unsigned long Accept;
109 /** Number of failed accepts
111 unsigned long Refused;
112 /** Number of unknown commands seen
114 unsigned long Unknown;
115 /** Number of nickname collisions handled
117 unsigned long Collisions;
118 /** Number of DNS queries sent out
121 /** Number of good DNS replies received
122 * NOTE: This may not tally to the number sent out,
123 * due to timeouts and other latency issues.
125 unsigned long DnsGood;
126 /** Number of bad (negative) DNS replies received
127 * NOTE: This may not tally to the number sent out,
128 * due to timeouts and other latency issues.
130 unsigned long DnsBad;
131 /** Number of inbound connections seen
133 unsigned long Connects;
134 /** Total bytes of data transmitted
137 /** Total bytes of data received
141 /** Cpu usage at last sample
144 /** Time QP sample was read
146 LARGE_INTEGER LastSampled;
149 LARGE_INTEGER QPFrequency;
151 /** Cpu usage at last sample
154 /** Time last sample was read
156 timespec LastSampled;
158 /** The constructor initializes all the counts to zero
161 : Accept(0), Refused(0), Unknown(0), Collisions(0), Dns(0),
162 DnsGood(0), DnsBad(0), Connects(0), Sent(0), Recv(0)
167 DEFINE_HANDLER1(IsNickHandler, bool, const std::string&);
168 DEFINE_HANDLER2(GenRandomHandler, void, char*, size_t);
169 DEFINE_HANDLER1(IsIdentHandler, bool, const std::string&);
170 DEFINE_HANDLER1(IsChannelHandler, bool, const std::string&);
171 DEFINE_HANDLER3(OnCheckExemptionHandler, ModResult, User*, Channel*, const std::string&);
173 /** The main class of the irc server.
174 * This class contains instances of all the other classes in this software.
175 * Amongst other things, it contains a ModeParser, a DNS object, a CommandParser
176 * object, and a list of active Module objects, and facilities for Module
177 * objects to interact with the core system it implements.
179 class CoreExport InspIRCd
182 /** Set up the signal handlers
186 /** Daemonize the ircd and close standard input/output streams
187 * @return True if the program daemonized succesfully
191 /** The current time, updated in the mainloop
193 struct timespec TIME;
195 /** A 64k buffer used to read socket data into
196 * NOTE: update ValidateNetBufferSize if you change this
198 char ReadBuffer[65535];
200 /** Check we aren't running as root, and exit if we are
201 * with exit code EXIT_STATUS_ROOT.
209 /** Global cull list, will be processed on next iteration
211 CullList GlobalCulls;
212 /** Actions that must happen outside of the current call stack */
213 ActionList AtomicActions;
217 IsNickHandler HandleIsNick;
218 IsIdentHandler HandleIsIdent;
219 OnCheckExemptionHandler HandleOnCheckExemption;
220 IsChannelHandler HandleIsChannel;
221 GenRandomHandler HandleGenRandom;
223 /** 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
226 * SendMode expects a User* to send the numeric replies
227 * back to, so we create it a fake user that isnt in the user
228 * hash and set its descriptor to FD_MAGIC_NUMBER so the data
229 * falls into the abyss :p
231 FakeUser* FakeClient;
233 /** Find a user in the UUID hash
234 * @param uid The UUID to find
235 * @return A pointer to the user, or NULL if the user does not exist
237 User* FindUUID(const std::string &uid);
239 /** Time this ircd was booted
243 /** Config file pathname specified on the commandline or via ./configure
245 std::string ConfigFileName;
247 ExtensionManager Extensions;
249 /** Mode handler, handles mode setting and removal
253 /** Command parser, handles client to server commands
255 CommandParser Parser;
257 /** Thread engine, Handles threading where required
259 ThreadEngine Threads;
261 /** The thread/class used to read config files in REHASH and on startup
263 ConfigReaderThread* ConfigThread;
265 /** LogManager handles logging.
269 /** ModuleManager contains everything related to loading/unloading
272 ModuleManager Modules;
274 /** BanCacheManager is used to speed up checking of restrictions on connection
277 BanCacheManager BanCache;
279 /** Stats class, holds miscellaneous stats counters
283 /** Server Config class, holds configuration file data
285 ServerConfig* Config;
287 /** Snomask manager - handles routing of snomask messages
292 /** Timer manager class, triggers Timer timer events
296 /** X-Line manager. Handles G/K/Q/E line setting, removal and matching
298 XLineManager* XLines;
300 /** User manager. Various methods and data associated with users.
304 /** Channel list, a hash_map containing all channels XXX move to channel manager class
308 /** List of the open ports
310 std::vector<ListenSocket*> ports;
312 /** Set to the current signal recieved
314 static sig_atomic_t s_signal;
316 /** Protocol interface, overridden by server protocol modules
318 ProtocolInterface* PI;
320 /** Default implementation of the ProtocolInterface, does nothing
322 ProtocolInterface DefaultProtocolInterface;
324 /** Holds extensible for user operquit
326 StringExtItem OperQuit;
328 /** Manages the generation and transmission of ISUPPORT. */
329 ISupportManager ISupport;
331 /** Get the current time
332 * Because this only calls time() once every time around the mainloop,
333 * it is much faster than calling time() directly.
334 * @return The current time as an epoch value (time_t)
336 inline time_t Time() { return TIME.tv_sec; }
337 /** The fractional time at the start of this mainloop iteration (nanoseconds) */
338 inline long Time_ns() { return TIME.tv_nsec; }
339 /** Update the current time. Don't call this unless you have reason to do so. */
342 /** Generate a random string with the given length
343 * @param length The length in bytes
344 * @param printable if false, the string will use characters 0-255; otherwise,
345 * it will be limited to 0x30-0x7E ('0'-'~', nonspace printable characters)
347 std::string GenRandomStr(int length, bool printable = true);
348 /** Generate a random integer.
349 * This is generally more secure than rand()
351 unsigned long GenRandomInt(unsigned long max);
353 /** Fill a buffer with random bits */
354 caller2<void, char*, size_t> GenRandom;
356 /** Bind all ports specified in the configuration file.
357 * @return The number of ports bound without error
359 int BindPorts(FailedPortList &failed_ports);
361 /** Find a user in the nick hash.
362 * If the user cant be found in the nick hash check the uuid hash
363 * @param nick The nickname to find
364 * @return A pointer to the user, or NULL if the user does not exist
366 User* FindNick(const std::string &nick);
368 /** Find a user in the nick hash ONLY
370 User* FindNickOnly(const std::string &nick);
372 /** Find a channel in the channels hash
373 * @param chan The channel to find
374 * @return A pointer to the channel, or NULL if the channel does not exist
376 Channel* FindChan(const std::string &chan);
378 /** Get a hash map containing all channels, keyed by their name
379 * @return A hash map mapping channel names to Channel pointers
381 chan_hash& GetChans() { return chanlist; }
383 /** Return true if a channel name is valid
384 * @param chname A channel name to verify
385 * @return True if the name is valid
387 caller1<bool, const std::string&> IsChannel;
389 /** Return true if str looks like a server ID
390 * @param sid string to check against
392 static bool IsSID(const std::string& sid);
394 /** Handles incoming signals after being set
395 * @param signal the signal recieved
397 void SignalHandler(int signal);
399 /** Sets the signal recieved
400 * @param signal the signal recieved
402 static void SetSignal(int signal);
404 /** Causes the server to exit after unloading modules and
405 * closing all open file descriptors.
407 * @param status The exit code to give to the operating system
408 * (See the ExitStatus enum for valid values)
410 void Exit(int status);
412 /** Causes the server to exit immediately with exit code 0.
413 * The status code is required for signal handlers, and ignored.
415 static void QuickExit(int status);
417 /** Formats the input string with the specified arguments.
418 * @param formatString The string to format
419 * @param ... A variable number of format arguments.
420 * @return The formatted string
422 static const char* Format(const char* formatString, ...) CUSTOM_PRINTF(1, 2);
423 static const char* Format(va_list &vaList, const char* formatString) CUSTOM_PRINTF(2, 0);
425 /** Return true if a nickname is valid
426 * @param n A nickname to verify
427 * @return True if the nick is valid
429 caller1<bool, const std::string&> IsNick;
431 /** Return true if an ident is valid
432 * @param An ident to verify
433 * @return True if the ident is valid
435 caller1<bool, const std::string&> IsIdent;
437 /** Match two strings using pattern matching, optionally, with a map
438 * to check case against (may be NULL). If map is null, match will be case insensitive.
439 * @param str The literal string to match against
440 * @param mask The glob pattern to match against.
441 * @param map The character map to use when matching.
443 static bool Match(const std::string& str, const std::string& mask, unsigned const char* map = NULL);
444 static bool Match(const char* str, const char* mask, unsigned const char* map = NULL);
446 /** Match two strings using pattern matching, optionally, with a map
447 * to check case against (may be NULL). If map is null, match will be case insensitive.
448 * Supports CIDR patterns as well as globs.
449 * @param str The literal string to match against
450 * @param mask The glob or CIDR pattern to match against.
451 * @param map The character map to use when matching.
453 static bool MatchCIDR(const std::string& str, const std::string& mask, unsigned const char* map = NULL);
454 static bool MatchCIDR(const char* str, const char* mask, unsigned const char* map = NULL);
456 /** Matches a hostname and IP against a space delimited list of hostmasks.
457 * @param masks The space delimited masks to match against.
458 * @param hostname The hostname to try and match.
459 * @param ipaddr The IP address to try and match.
461 static bool MatchMask(const std::string& masks, const std::string& hostname, const std::string& ipaddr);
463 /** Return true if the given parameter is a valid nick!user\@host mask
464 * @param mask A nick!user\@host masak to match against
465 * @return True i the mask is valid
467 static bool IsValidMask(const std::string& mask);
469 /** Strips all color and control codes except 001 from the given string
470 * @param sentence The string to strip from
472 static void StripColor(std::string &sentence);
474 /** Parses color codes from string values to actual color codes
475 * @param input The data to process
477 static void ProcessColors(file_cache& input);
479 /** Rehash the local server
480 * @param uuid The uuid of the user who started the rehash, can be empty
482 void Rehash(const std::string& uuid = "");
484 /** Calculate a duration in seconds from a string in the form 1y2w3d4h6m5s
485 * @param str A string containing a time in the form 1y2w3d4h6m5s
486 * (one year, two weeks, three days, four hours, six minutes and five seconds)
487 * @return The total number of seconds
489 static unsigned long Duration(const std::string& str);
491 /** Attempt to compare a password to a string from the config file.
492 * This will be passed to handling modules which will compare the data
493 * against possible hashed equivalents in the input string.
494 * @param ex The object (user, server, whatever) causing the comparison.
495 * @param data The data from the config file
496 * @param input The data input by the oper
497 * @param hashtype The hash from the config file
498 * @return True if the strings match, false if they do not
500 bool PassCompare(Extensible* ex, const std::string& data, const std::string& input, const std::string& hashtype);
502 /** Returns the full version string of this ircd
503 * @return The version string
505 std::string GetVersionString(bool getFullVersion = false);
507 /** Attempt to write the process id to a given file
508 * @param filename The PID file to attempt to write to
509 * @return This function may bail if the file cannot be written
511 void WritePID(const std::string &filename);
513 /** This constructor initialises all the subsystems and reads the config file.
514 * @param argc The argument count passed to main()
515 * @param argv The argument list passed to main()
516 * @throw <anything> If anything is thrown from here and makes it to
517 * you, you should probably just give up and go home. Yes, really.
518 * It's that bad. Higher level classes should catch any non-fatal exceptions.
520 InspIRCd(int argc, char** argv);
522 /** Called to check whether a channel restriction mode applies to a user
523 * @param User that is attempting some action
524 * @param Channel that the action is being performed on
527 caller3<ModResult, User*, Channel*, const std::string&> OnCheckExemption;
529 /** Prepare the ircd for restart or shutdown.
530 * This function unloads all modules which can be unloaded,
531 * closes all open sockets, and closes the logfile.
535 /** Return a time_t as a human-readable string.
536 * @param format The format to retrieve the date/time in. See `man 3 strftime`
537 * for more information. If NULL, "%a %b %d %T %Y" is assumed.
538 * @param utc True to convert the time to string as-is, false to convert it to local time first.
539 * @return A string representing the given date/time.
541 static std::string TimeString(time_t curtime, const char* format = NULL, bool utc = false);
543 /** Compare two strings in a timing-safe way. If the lengths of the strings differ, the function
544 * returns false immediately (leaking information about the length), otherwise it compares each
545 * character and only returns after all characters have been compared.
546 * @param one First string
547 * @param two Second string
548 * @return True if the strings match, false if they don't
550 static bool TimingSafeCompare(const std::string& one, const std::string& two);
552 /** Begin execution of the server.
553 * NOTE: this function NEVER returns. Internally,
554 * it will repeatedly loop.
558 char* GetReadBuffer()
560 return this->ReadBuffer;
567 class CommandModule : public Module
571 CommandModule() : cmd(this)
577 return Version(cmd.name, VF_VENDOR|VF_CORE);
581 inline void stdalgo::culldeleter::operator()(classbase* item)
584 ServerInstance->GlobalCulls.AddItem(item);
587 #include "numericbuilder.h"
588 #include "modules/whois.h"