1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
17 /* Now with added unF! ;) */
21 #include "inspircd_config.h"
23 #include "inspircd_io.h"
25 #include <sys/errno.h>
26 #include <sys/ioctl.h>
33 #include <ext/hash_map>
54 #include "inspstring.h"
56 #include "helperfuncs.h"
58 #include "socketengine.h"
59 #include "userprocess.h"
62 #include "command_parse.h"
64 InspIRCd* ServerInstance;
66 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
67 int WHOWAS_MAX = 100; // default 100 people maximum in the WHOWAS list
69 extern std::vector<Module*> modules;
70 extern std::vector<ircd_module*> factory;
72 std::vector<InspSocket*> module_sockets;
73 std::vector<userrec*> local_users;
76 extern char LOG_FILE[MAXBUF];
77 int openSockfd[MAX_DESCRIPTORS];
80 sockaddr_in client,server;
83 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
85 time_t TIME = time(NULL), OLDTIME = time(NULL);
87 // This table references users by file descriptor.
88 // its an array to make it VERY fast, as all lookups are referenced
89 // by an integer, meaning there is no need for a scan/search operation.
90 userrec* fd_ref_table[MAX_DESCRIPTORS];
92 Server* MyServer = new Server;
93 ServerConfig *Config = new ServerConfig;
98 servernamelist servernames;
101 void AddServerName(std::string servername)
103 log(DEBUG,"Adding server name: %s",servername.c_str());
104 for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
106 if (*a == servername)
109 servernames.push_back(servername);
112 const char* FindServerNamePtr(std::string servername)
114 for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
116 if (*a == servername)
119 AddServerName(servername);
120 return FindServerNamePtr(servername);
123 bool FindServerName(std::string servername)
125 for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
127 if (*a == servername)
133 std::string InspIRCd::GetRevision()
138 void InspIRCd::MakeLowerMap()
140 // initialize the lowercase mapping table
141 for (unsigned int cn = 0; cn < 256; cn++)
143 // lowercase the uppercase chars
144 for (unsigned int cn = 65; cn < 91; cn++)
145 lowermap[cn] = tolower(cn);
146 // now replace the specific chars for scandanavian comparison
147 lowermap[(unsigned)'['] = '{';
148 lowermap[(unsigned)']'] = '}';
149 lowermap[(unsigned)'\\'] = '|';
152 InspIRCd::InspIRCd(int argc, char** argv)
155 module_sockets.clear();
156 this->startup_time = time(NULL);
158 log(DEBUG,"*** InspIRCd starting up!");
159 if (!FileExists(CONFIG_FILE))
161 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
162 log(DEFAULT,"main: no config");
163 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
168 for (int i = 1; i < argc; i++)
170 if (!strcmp(argv[i],"-nofork")) {
171 Config->nofork = true;
173 if (!strcmp(argv[i],"-wait")) {
176 if (!strcmp(argv[i],"-nolimit")) {
177 Config->unlimitcore = true;
179 if (!strcmp(argv[i],"-logfile")) {
182 strlcpy(LOG_FILE,argv[i+1],MAXBUF);
183 printf("LOG: Setting logfile to %s\n",LOG_FILE);
187 printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
194 strlcpy(Config->MyExecutable,argv[0],MAXBUF);
196 this->MakeLowerMap();
199 this->stats = new serverstats();
200 Config->ClearStack();
201 Config->Read(true,NULL);
203 this->ModeGrok = new ModeParser();
204 this->Parser = new CommandParser();
205 AddServerName(Config->ServerName);
207 stats->BoundPortCount = BindPorts(true);
209 for(int t = 0; t < 255; t++)
210 Config->global_implementation[t] = 0;
212 memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
220 printf("ERROR: could not go into daemon mode. Shutting down.\n");
225 /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
226 * initialize the socket engine.
228 SE = new SocketEngine();
230 /* We must load the modules AFTER initializing the socket engine, now */
235 std::string InspIRCd::GetVersionString()
237 char versiondata[MAXBUF];
239 char dnsengine[] = "multithread";
241 char dnsengine[] = "singlethread";
243 if (*Config->CustomVersion)
245 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
249 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
254 char* InspIRCd::ModuleError()
259 void InspIRCd::erase_factory(int j)
262 for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
267 factory.push_back(NULL);
274 void InspIRCd::erase_module(int j)
277 for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
283 modules.push_back(NULL);
289 for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
293 Config->module_names.erase(v);
301 void InspIRCd::MoveTo(std::string modulename,int slot)
303 unsigned int v2 = 256;
304 for (unsigned int v = 0; v < Config->module_names.size(); v++)
306 if (Config->module_names[v] == modulename)
308 // found an instance, swap it with the item at MODCOUNT
313 if ((v2 != (unsigned int)slot) && (v2 < 256))
315 // Swap the module names over
316 Config->module_names[v2] = Config->module_names[slot];
317 Config->module_names[slot] = modulename;
318 // now swap the module factories
319 ircd_module* temp = factory[v2];
320 factory[v2] = factory[slot];
321 factory[slot] = temp;
322 // now swap the module objects
323 Module* temp_module = modules[v2];
324 modules[v2] = modules[slot];
325 modules[slot] = temp_module;
326 // now swap the implement lists (we dont
327 // need to swap the global or recount it)
328 for (int n = 0; n < 255; n++)
330 char x = Config->implement_lists[v2][n];
331 Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
332 Config->implement_lists[slot][n] = x;
337 log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
341 void InspIRCd::MoveAfter(std::string modulename, std::string after)
343 for (unsigned int v = 0; v < Config->module_names.size(); v++)
345 if (Config->module_names[v] == after)
347 MoveTo(modulename, v);
353 void InspIRCd::MoveBefore(std::string modulename, std::string before)
355 for (unsigned int v = 0; v < Config->module_names.size(); v++)
357 if (Config->module_names[v] == before)
361 MoveTo(modulename, v-1);
365 MoveTo(modulename, v);
372 void InspIRCd::MoveToFirst(std::string modulename)
374 MoveTo(modulename,0);
377 void InspIRCd::MoveToLast(std::string modulename)
379 MoveTo(modulename,MODCOUNT);
382 void InspIRCd::BuildISupport()
384 // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
386 v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=(ohv)@%+ MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
387 v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
388 v << MAXAWAY << " CHANMODES=b,k,l,psmnti FNC NETWORK=" << Config->Network << " MAXPARA=32";
389 Config->data005 = v.str();
390 FOREACH_MOD(I_On005Numeric,On005Numeric(Config->data005));
393 bool InspIRCd::UnloadModule(const char* filename)
395 std::string filename_str = filename;
396 for (unsigned int j = 0; j != Config->module_names.size(); j++)
398 if (Config->module_names[j] == filename_str)
400 if (modules[j]->GetVersion().Flags & VF_STATIC)
402 log(DEFAULT,"Failed to unload STATIC module %s",filename);
403 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
406 /* Give the module a chance to tidy out all its metadata */
407 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
409 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
411 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
413 modules[j]->OnCleanup(TYPE_USER,u->second);
416 FOREACH_MOD(I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
418 for(int t = 0; t < 255; t++)
420 Config->global_implementation[t] -= Config->implement_lists[j][t];
423 /* We have to renumber implement_lists after unload because the module numbers change!
425 for(int j2 = j; j2 < 254; j2++)
427 for(int t = 0; t < 255; t++)
429 Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
434 log(DEBUG,"Deleting module...");
436 log(DEBUG,"Erasing module entry...");
438 log(DEBUG,"Removing dependent commands...");
439 Parser->RemoveCommands(filename);
440 log(DEFAULT,"Module %s unloaded",filename);
446 log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
447 snprintf(MODERR,MAXBUF,"Module not loaded");
451 bool InspIRCd::LoadModule(const char* filename)
453 char modfile[MAXBUF];
455 strlcpy(modfile,filename,MAXBUF);
457 snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
459 std::string filename_str = filename;
462 if (!DirValid(modfile))
464 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
465 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
470 log(DEBUG,"Loading module: %s",modfile);
472 if (FileExists(modfile))
475 for (unsigned int j = 0; j < Config->module_names.size(); j++)
477 if (Config->module_names[j] == filename_str)
479 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
480 snprintf(MODERR,MAXBUF,"Module already loaded");
484 ircd_module* a = new ircd_module(modfile);
485 factory[MODCOUNT+1] = a;
486 if (factory[MODCOUNT+1]->LastError())
488 log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
489 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
494 if (factory[MODCOUNT+1]->factory)
496 Module* m = factory[MODCOUNT+1]->factory->CreateModule(MyServer);
497 modules[MODCOUNT+1] = m;
498 /* save the module and the module's classfactory, if
499 * this isnt done, random crashes can occur :/ */
500 Config->module_names.push_back(filename);
502 char* x = &Config->implement_lists[MODCOUNT+1][0];
503 for(int t = 0; t < 255; t++)
506 modules[MODCOUNT+1]->Implements(x);
508 for(int t = 0; t < 255; t++)
509 Config->global_implementation[t] += Config->implement_lists[MODCOUNT+1][t];
513 log(DEFAULT,"Unable to load %s",modfile);
514 snprintf(MODERR,MAXBUF,"Factory function failed!");
518 catch (ModuleException& modexcept)
520 log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
521 snprintf(MODERR,MAXBUF,"Factory function threw an exception: %s",modexcept.GetReason());
528 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
529 snprintf(MODERR,MAXBUF,"Module file could not be found");
534 FOREACH_MOD(I_OnLoadModule,OnLoadModule(modules[MODCOUNT],filename_str));
535 // now work out which modules, if any, want to move to the back of the queue,
536 // and if they do, move them there.
537 std::vector<std::string> put_to_back;
538 std::vector<std::string> put_to_front;
539 std::map<std::string,std::string> put_before;
540 std::map<std::string,std::string> put_after;
541 for (unsigned int j = 0; j < Config->module_names.size(); j++)
543 if (modules[j]->Prioritize() == PRIORITY_LAST)
545 put_to_back.push_back(Config->module_names[j]);
547 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
549 put_to_front.push_back(Config->module_names[j]);
551 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
553 put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
555 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
557 put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
560 for (unsigned int j = 0; j < put_to_back.size(); j++)
562 MoveToLast(put_to_back[j]);
564 for (unsigned int j = 0; j < put_to_front.size(); j++)
566 MoveToFirst(put_to_front[j]);
568 for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
570 MoveBefore(j->first,j->second);
572 for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
574 MoveAfter(j->first,j->second);
580 void InspIRCd::DoOneIteration(bool process_module_sockets)
582 int activefds[MAX_DESCRIPTORS];
586 InspSocket* s = NULL;
587 InspSocket* s_del = NULL;
588 unsigned int numberactive;
589 sockaddr_in sock_us; // our port number
590 socklen_t uslen; // length of our port number
597 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
598 * Once per loop iteration is pleanty.
603 /* Run background module timers every few seconds
604 * (the docs say modules shouldnt rely on accurate
605 * timing using this event, so we dont have to
606 * time this exactly).
608 if (((TIME % 5) == 0) && (!expire_run))
611 if (process_module_sockets)
613 /* Fix by brain - the addition of DoOneIteration means that this
614 * can end up getting called recursively in the following pattern:
616 * m_spanningtree DoPingChecks
617 * (server pings out and is squit)
618 * (squit causes call to DoOneIteration)
619 * DoOneIteration enters here
620 * calls DoBackground timer
621 * enters m_spanningtree DoPingChecks... see step 1.
623 * This should do the job and fix the bug.
625 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
627 TickMissedTimers(TIME);
632 else if ((TIME % 5) == 1)
637 if (iterations++ == 15)
640 DoBackgroundUserStuff(TIME);
643 /* Once a second, do the background processing */
647 WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
648 if ((TIME % 3600) == 0)
650 MaintainWhoWas(TIME);
654 /* Process timeouts on module sockets each time around
655 * the loop. There shouldnt be many module sockets, at
656 * most, 20 or so, so this won't be much of a performance
659 if (process_module_sockets)
660 DoSocketTimeouts(TIME);
664 /* Call the socket engine to wait on the active
665 * file descriptors. The socket engine has everything's
666 * descriptors in its list... dns, modules, users,
667 * servers... so its nice and easy, just one call.
669 if (!(numberactive = SE->Wait(activefds)))
676 * Now process each of the fd's. For users, we have a fast
677 * lookup table which can find a user by file descriptor, so
678 * processing them by fd isnt expensive. If we have a lot of
679 * listening ports or module sockets though, things could get
682 for (unsigned int activefd = 0; activefd < numberactive; activefd++)
684 int socket_type = SE->GetType(activefds[activefd]);
689 cu = fd_ref_table[activefds[activefd]];
697 if (!process_module_sockets)
700 /* Process module-owned sockets.
701 * Modules are encouraged to inherit their sockets from
702 * InspSocket so we can process them neatly like this.
704 s = socket_ref[activefds[activefd]];
706 if ((s) && (!s->Poll()))
708 log(DEBUG,"inspircd.cpp: Socket poll returned false, close and bail");
709 SE->DelFd(s->GetFd());
710 socket_ref[activefds[activefd]] = NULL;
711 for (std::vector<InspSocket*>::iterator a = module_sockets.begin(); a < module_sockets.end(); a++)
713 s_del = (InspSocket*)*a;
714 if ((s_del) && (s_del->GetFd() == activefds[activefd]))
716 module_sockets.erase(a);
726 /* When we are using single-threaded dns,
727 * the sockets for dns end up in our mainloop.
728 * When we are using multi-threaded dns,
729 * each thread has its own basic poll() loop
730 * within it, making them 'fire and forget'
731 * and independent of the mainloop.
734 dns_poll(activefds[activefd]);
740 /* It's a listener */
741 uslen = sizeof(sock_us);
742 length = sizeof(client);
743 incomingSockfd = accept (activefds[activefd],(struct sockaddr*)&client,&length);
745 if ((incomingSockfd > -1) && (!getsockname(incomingSockfd,(sockaddr*)&sock_us,&uslen)))
747 in_port = ntohs(sock_us.sin_port);
748 log(DEBUG,"Accepted socket %d",incomingSockfd);
749 /* Years and years ago, we used to resolve here
750 * using gethostbyaddr(). That is sucky and we
751 * don't do that any more...
753 NonBlocking(incomingSockfd);
754 if (Config->GetIOHook(in_port))
758 Config->GetIOHook(in_port)->OnRawSocketAccept(incomingSockfd, (char*)inet_ntoa(client.sin_addr), in_port);
760 catch (ModuleException& modexcept)
762 log(DEBUG,"Module exception cought: %s",modexcept.GetReason());
765 stats->statsAccept++;
766 AddClient(incomingSockfd, in_port, false, client.sin_addr);
767 log(DEBUG,"Adding client on port %lu fd=%lu",(unsigned long)in_port,(unsigned long)incomingSockfd);
771 log(DEBUG,"Accept failed on fd %lu: %s",(unsigned long)incomingSockfd,strerror(errno));
772 shutdown(incomingSockfd,2);
773 close(incomingSockfd);
774 stats->statsRefused++;
779 /* Something went wrong if we're in here.
780 * In fact, so wrong, im not quite sure
781 * what we would do, so for now, its going
782 * to safely do bugger all.
784 SE->DelFd(activefds[activefd]);
793 /* Until THIS point, ServerInstance == NULL */
795 LoadAllModules(this);
797 printf("\nInspIRCd is now running!\n");
806 /* Add the listening sockets used for client inbound connections
807 * to the socket engine
809 for (int count = 0; count < stats->BoundPortCount; count++)
810 SE->AddFd(openSockfd[count],true,X_LISTEN);
812 WritePID(Config->PID);
814 /* main loop, this never returns */
821 DoOneIteration(true);
823 /* This is never reached -- we hope! */
827 /**********************************************************************************/
830 * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
833 int main(int argc, char** argv)
837 ServerInstance = new InspIRCd(argc, argv);
838 ServerInstance->Run();
839 delete ServerInstance;
841 catch (std::bad_alloc)
843 log(DEFAULT,"You are out of memory! (got exception std::bad_alloc!)");
844 send_error("**** OUT OF MEMORY **** We're gonna need a bigger boat!");
845 printf("Out of memory! (got exception std::bad_alloc!");