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/>.
46 #include "intrusive_list.h"
51 CoreExport extern InspIRCd* ServerInstance;
55 #include "consolecolors.h"
57 #include "cull_list.h"
58 #include "extensible.h"
59 #include "fileutils.h"
68 #include "usermanager.h"
71 #include "command_parse.h"
73 #include "socketengine.h"
75 #include "filelogger.h"
77 #include "threadengine.h"
78 #include "configreader.h"
79 #include "inspstring.h"
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)
96 out += "0123456789"[ std::abs( (long)quotient % 10 ) ];
101 std::reverse(out.begin(), out.end());
105 /** Template function to convert any input type to std::string
107 inline std::string ConvToStr(const int in)
109 return ConvNumeric(in);
112 /** Template function to convert any input type to std::string
114 inline std::string ConvToStr(const long in)
116 return ConvNumeric(in);
119 /** Template function to convert any input type to std::string
121 inline std::string ConvToStr(const char* in)
126 /** Template function to convert any input type to std::string
128 inline std::string ConvToStr(const bool in)
130 return (in ? "1" : "0");
133 /** Template function to convert any input type to std::string
135 inline std::string ConvToStr(char in)
137 return std::string(1, in);
140 /** Template function to convert any input type to std::string
142 template <class T> inline std::string ConvToStr(const T &in)
144 std::stringstream tmp;
145 if (!(tmp << in)) return std::string();
149 /** Template function to convert any input type to any other type
150 * (usually an integer or numeric type)
152 template<typename T> inline long ConvToInt(const T &in)
154 std::stringstream tmp;
155 if (!(tmp << in)) return 0;
156 return atol(tmp.str().c_str());
159 /** This class contains various STATS counters
160 * It is used by the InspIRCd class, which internally
161 * has an instance of it.
166 /** Number of accepted connections
168 unsigned long statsAccept;
169 /** Number of failed accepts
171 unsigned long statsRefused;
172 /** Number of unknown commands seen
174 unsigned long statsUnknown;
175 /** Number of nickname collisions handled
177 unsigned long statsCollisions;
178 /** Number of DNS queries sent out
180 unsigned long statsDns;
181 /** Number of good DNS replies received
182 * NOTE: This may not tally to the number sent out,
183 * due to timeouts and other latency issues.
185 unsigned long statsDnsGood;
186 /** Number of bad (negative) DNS replies received
187 * NOTE: This may not tally to the number sent out,
188 * due to timeouts and other latency issues.
190 unsigned long statsDnsBad;
191 /** Number of inbound connections seen
193 unsigned long statsConnects;
194 /** Total bytes of data transmitted
196 unsigned long statsSent;
197 /** Total bytes of data received
199 unsigned long statsRecv;
201 /** Cpu usage at last sample
204 /** Time QP sample was read
206 LARGE_INTEGER LastSampled;
209 LARGE_INTEGER QPFrequency;
211 /** Cpu usage at last sample
214 /** Time last sample was read
216 timespec LastSampled;
218 /** The constructor initializes all the counts to zero
221 : statsAccept(0), statsRefused(0), statsUnknown(0), statsCollisions(0), statsDns(0),
222 statsDnsGood(0), statsDnsBad(0), statsConnects(0), statsSent(0), statsRecv(0)
227 /** This class manages the generation and transmission of ISUPPORT. */
228 class CoreExport ISupportManager
231 /** The generated lines which are sent to clients. */
232 std::vector<std::string> Lines;
235 /** (Re)build the ISUPPORT vector. */
238 /** Returns the std::vector of ISUPPORT lines. */
239 const std::vector<std::string>& GetLines()
244 /** Send the 005 numerics (ISUPPORT) to a user. */
245 void SendTo(LocalUser* user);
248 DEFINE_HANDLER1(IsNickHandler, bool, const std::string&);
249 DEFINE_HANDLER2(GenRandomHandler, void, char*, size_t);
250 DEFINE_HANDLER1(IsIdentHandler, bool, const std::string&);
251 DEFINE_HANDLER1(IsChannelHandler, bool, const std::string&);
252 DEFINE_HANDLER3(OnCheckExemptionHandler, ModResult, User*, Channel*, const std::string&);
254 /** The main class of the irc server.
255 * This class contains instances of all the other classes in this software.
256 * Amongst other things, it contains a ModeParser, a DNS object, a CommandParser
257 * object, and a list of active Module objects, and facilities for Module
258 * objects to interact with the core system it implements.
260 class CoreExport InspIRCd
263 /** Set up the signal handlers
267 /** Daemonize the ircd and close standard input/output streams
268 * @return True if the program daemonized succesfully
272 /** The current time, updated in the mainloop
274 struct timespec TIME;
276 /** A 64k buffer used to read socket data into
277 * NOTE: update ValidateNetBufferSize if you change this
279 char ReadBuffer[65535];
281 /** Check we aren't running as root, and exit if we are
282 * with exit code EXIT_STATUS_ROOT.
290 /** Global cull list, will be processed on next iteration
292 CullList GlobalCulls;
293 /** Actions that must happen outside of the current call stack */
294 ActionList AtomicActions;
298 IsNickHandler HandleIsNick;
299 IsIdentHandler HandleIsIdent;
300 OnCheckExemptionHandler HandleOnCheckExemption;
301 IsChannelHandler HandleIsChannel;
302 GenRandomHandler HandleGenRandom;
304 /** 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
307 * SendMode expects a User* to send the numeric replies
308 * back to, so we create it a fake user that isnt in the user
309 * hash and set its descriptor to FD_MAGIC_NUMBER so the data
310 * falls into the abyss :p
312 FakeUser* FakeClient;
314 /** Find a user in the UUID hash
315 * @param uid The UUID to find
316 * @return A pointer to the user, or NULL if the user does not exist
318 User* FindUUID(const std::string &uid);
320 /** Time this ircd was booted
324 /** Config file pathname specified on the commandline or via ./configure
326 std::string ConfigFileName;
328 ExtensionManager Extensions;
330 /** Mode handler, handles mode setting and removal
334 /** Command parser, handles client to server commands
336 CommandParser* Parser;
338 /** Thread engine, Handles threading where required
340 ThreadEngine* Threads;
342 /** The thread/class used to read config files in REHASH and on startup
344 ConfigReaderThread* ConfigThread;
346 /** LogManager handles logging.
350 /** ModuleManager contains everything related to loading/unloading
353 ModuleManager* Modules;
355 /** BanCacheManager is used to speed up checking of restrictions on connection
358 BanCacheManager *BanCache;
360 /** Stats class, holds miscellaneous stats counters
364 /** Server Config class, holds configuration file data
366 ServerConfig* Config;
368 /** Snomask manager - handles routing of snomask messages
373 /** Timer manager class, triggers Timer timer events
377 /** X-Line manager. Handles G/K/Q/E line setting, removal and matching
379 XLineManager* XLines;
381 /** User manager. Various methods and data associated with users.
385 /** Channel list, a hash_map containing all channels XXX move to channel manager class
389 /** List of the open ports
391 std::vector<ListenSocket*> ports;
393 /** Set to the current signal recieved
395 static sig_atomic_t s_signal;
397 /** Protocol interface, overridden by server protocol modules
399 ProtocolInterface* PI;
401 /** Holds extensible for user operquit
403 StringExtItem OperQuit;
405 /** Manages the generation and transmission of ISUPPORT. */
406 ISupportManager ISupport;
408 /** Get the current time
409 * Because this only calls time() once every time around the mainloop,
410 * it is much faster than calling time() directly.
411 * @return The current time as an epoch value (time_t)
413 inline time_t Time() { return TIME.tv_sec; }
414 /** The fractional time at the start of this mainloop iteration (nanoseconds) */
415 inline long Time_ns() { return TIME.tv_nsec; }
416 /** Update the current time. Don't call this unless you have reason to do so. */
419 /** Generate a random string with the given length
420 * @param length The length in bytes
421 * @param printable if false, the string will use characters 0-255; otherwise,
422 * it will be limited to 0x30-0x7E ('0'-'~', nonspace printable characters)
424 std::string GenRandomStr(int length, bool printable = true);
425 /** Generate a random integer.
426 * This is generally more secure than rand()
428 unsigned long GenRandomInt(unsigned long max);
430 /** Fill a buffer with random bits */
431 caller2<void, char*, size_t> GenRandom;
433 /** Bind all ports specified in the configuration file.
434 * @return The number of ports bound without error
436 int BindPorts(FailedPortList &failed_ports);
438 /** Binds a socket on an already open file descriptor
439 * @param sockfd A valid file descriptor of an open socket
440 * @param port The port number to bind to
441 * @param addr The address to bind to (IP only)
442 * @param dolisten Should this port be listened on?
443 * @return True if the port was bound successfully
445 bool BindSocket(int sockfd, int port, const char* addr, bool dolisten = true);
447 /** Find a user in the nick hash.
448 * If the user cant be found in the nick hash check the uuid hash
449 * @param nick The nickname to find
450 * @return A pointer to the user, or NULL if the user does not exist
452 User* FindNick(const std::string &nick);
454 /** Find a user in the nick hash ONLY
456 User* FindNickOnly(const std::string &nick);
458 /** Find a channel in the channels hash
459 * @param chan The channel to find
460 * @return A pointer to the channel, or NULL if the channel does not exist
462 Channel* FindChan(const std::string &chan);
464 /** Get a hash map containing all channels, keyed by their name
465 * @return A hash map mapping channel names to Channel pointers
467 chan_hash& GetChans() { return chanlist; }
469 /** Return true if a channel name is valid
470 * @param chname A channel name to verify
471 * @return True if the name is valid
473 caller1<bool, const std::string&> IsChannel;
475 /** Return true if str looks like a server ID
476 * @param sid string to check against
478 static bool IsSID(const std::string& sid);
480 /** Handles incoming signals after being set
481 * @param signal the signal recieved
483 void SignalHandler(int signal);
485 /** Sets the signal recieved
486 * @param signal the signal recieved
488 static void SetSignal(int signal);
490 /** Causes the server to exit after unloading modules and
491 * closing all open file descriptors.
493 * @param status The exit code to give to the operating system
494 * (See the ExitStatus enum for valid values)
496 void Exit(int status);
498 /** Causes the server to exit immediately with exit code 0.
499 * The status code is required for signal handlers, and ignored.
501 static void QuickExit(int status);
503 /** Formats the input string with the specified arguments.
504 * @param formatString The string to format
505 * @param ... A variable number of format arguments.
506 * @return The formatted string
508 static const char* Format(const char* formatString, ...) CUSTOM_PRINTF(1, 2);
509 static const char* Format(va_list &vaList, const char* formatString) CUSTOM_PRINTF(2, 0);
511 /** Send an error notice to all local users, opered and unopered
512 * @param s The error string to send
514 void SendError(const std::string &s);
516 /** Return true if a nickname is valid
517 * @param n A nickname to verify
518 * @return True if the nick is valid
520 caller1<bool, const std::string&> IsNick;
522 /** Return true if an ident is valid
523 * @param An ident to verify
524 * @return True if the ident is valid
526 caller1<bool, const std::string&> IsIdent;
528 /** Match two strings using pattern matching, optionally, with a map
529 * to check case against (may be NULL). If map is null, match will be case insensitive.
530 * @param str The literal string to match against
531 * @param mask The glob pattern to match against.
532 * @param map The character map to use when matching.
534 static bool Match(const std::string& str, const std::string& mask, unsigned const char* map = NULL);
535 static bool Match(const char* str, const char* mask, unsigned const char* map = NULL);
537 /** Match two strings using pattern matching, optionally, with a map
538 * to check case against (may be NULL). If map is null, match will be case insensitive.
539 * Supports CIDR patterns as well as globs.
540 * @param str The literal string to match against
541 * @param mask The glob or CIDR pattern to match against.
542 * @param map The character map to use when matching.
544 static bool MatchCIDR(const std::string& str, const std::string& mask, unsigned const char* map = NULL);
545 static bool MatchCIDR(const char* str, const char* mask, unsigned const char* map = NULL);
547 /** Matches a hostname and IP against a space delimited list of hostmasks.
548 * @param masks The space delimited masks to match against.
549 * @param hostname The hostname to try and match.
550 * @param ipaddr The IP address to try and match.
552 static bool MatchMask(const std::string& masks, const std::string& hostname, const std::string& ipaddr);
554 /** Return true if the given parameter is a valid nick!user\@host mask
555 * @param mask A nick!user\@host masak to match against
556 * @return True i the mask is valid
558 static bool IsValidMask(const std::string& mask);
560 /** Strips all color codes from the given string
561 * @param sentence The string to strip from
563 static void StripColor(std::string &sentence);
565 /** Parses color codes from string values to actual color codes
566 * @param input The data to process
568 static void ProcessColors(file_cache& input);
570 /** Rehash the local server
571 * @param uuid The uuid of the user who started the rehash, can be empty
573 void Rehash(const std::string& uuid = "");
575 /** Calculate a duration in seconds from a string in the form 1y2w3d4h6m5s
576 * @param str A string containing a time in the form 1y2w3d4h6m5s
577 * (one year, two weeks, three days, four hours, six minutes and five seconds)
578 * @return The total number of seconds
580 static unsigned long Duration(const std::string& str);
582 /** Attempt to compare a password to a string from the config file.
583 * This will be passed to handling modules which will compare the data
584 * against possible hashed equivalents in the input string.
585 * @param ex The object (user, server, whatever) causing the comparison.
586 * @param data The data from the config file
587 * @param input The data input by the oper
588 * @param hashtype The hash from the config file
589 * @return True if the strings match, false if they do not
591 bool PassCompare(Extensible* ex, const std::string& data, const std::string& input, const std::string& hashtype);
593 /** Returns the full version string of this ircd
594 * @return The version string
596 std::string GetVersionString(bool getFullVersion = false);
598 /** Attempt to write the process id to a given file
599 * @param filename The PID file to attempt to write to
600 * @return This function may bail if the file cannot be written
602 void WritePID(const std::string &filename);
604 /** This constructor initialises all the subsystems and reads the config file.
605 * @param argc The argument count passed to main()
606 * @param argv The argument list passed to main()
607 * @throw <anything> If anything is thrown from here and makes it to
608 * you, you should probably just give up and go home. Yes, really.
609 * It's that bad. Higher level classes should catch any non-fatal exceptions.
611 InspIRCd(int argc, char** argv);
613 /** Send a line of WHOIS data to a user.
614 * @param user user to send the line to
615 * @param dest user being WHOISed
616 * @param numeric Numeric to send
617 * @param text Text of the numeric
619 void SendWhoisLine(User* user, User* dest, int numeric, const std::string &text);
621 /** Send a line of WHOIS data to a user.
622 * @param user user to send the line to
623 * @param dest user being WHOISed
624 * @param numeric Numeric to send
625 * @param format Format string for the numeric
626 * @param ... Parameters for the format string
628 void SendWhoisLine(User* user, User* dest, int numeric, const char* format, ...) CUSTOM_PRINTF(5, 6);
630 /** Called to check whether a channel restriction mode applies to a user
631 * @param User that is attempting some action
632 * @param Channel that the action is being performed on
635 caller3<ModResult, User*, Channel*, const std::string&> OnCheckExemption;
637 /** Prepare the ircd for restart or shutdown.
638 * This function unloads all modules which can be unloaded,
639 * closes all open sockets, and closes the logfile.
643 /** Return a time_t as a human-readable string.
645 static std::string TimeString(time_t curtime);
647 /** Begin execution of the server.
648 * NOTE: this function NEVER returns. Internally,
649 * it will repeatedly loop.
653 char* GetReadBuffer()
655 return this->ReadBuffer;
662 class CommandModule : public Module
666 CommandModule() : cmd(this)
672 return Version(cmd.name, VF_VENDOR|VF_CORE);
676 inline void stdalgo::culldeleter::operator()(classbase* item)
679 ServerInstance->GlobalCulls.AddItem(item);