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>
30 #include <ext/hash_map>
51 #include "inspstring.h"
53 #include "helperfuncs.h"
55 #include "socketengine.h"
56 #include "userprocess.h"
59 #include "command_parse.h"
61 InspIRCd* ServerInstance;
63 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
64 int WHOWAS_MAX = 100; // default 100 people maximum in the WHOWAS list
66 extern std::vector<Module*> modules;
67 extern std::vector<ircd_module*> factory;
69 std::vector<InspSocket*> module_sockets;
70 std::vector<userrec*> local_users;
73 extern char LOG_FILE[MAXBUF];
74 int openSockfd[MAXSOCKS];
75 sockaddr_in client,server;
78 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
80 time_t TIME = time(NULL), OLDTIME = time(NULL);
82 // This table references users by file descriptor.
83 // its an array to make it VERY fast, as all lookups are referenced
84 // by an integer, meaning there is no need for a scan/search operation.
85 userrec* fd_ref_table[MAX_DESCRIPTORS];
87 Server* MyServer = new Server;
88 ServerConfig *Config = new ServerConfig;
93 servernamelist servernames;
96 void AddServerName(std::string servername)
98 log(DEBUG,"Adding server name: %s",servername.c_str());
99 for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
101 if (*a == servername)
104 servernames.push_back(servername);
107 const char* FindServerNamePtr(std::string servername)
109 for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
111 if (*a == servername)
114 AddServerName(servername);
115 return FindServerNamePtr(servername);
118 bool FindServerName(std::string servername)
120 for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
122 if (*a == servername)
128 std::string InspIRCd::GetRevision()
130 /* w00t got me to replace a bunch of strtok_r
131 * with something nicer, so i did this. Its the
132 * same thing really, only in C++. It places the
133 * text into a std::stringstream which is a readable
134 * and writeable buffer stream, and then pops two
135 * words off it, space delimited. Because it reads
136 * into the same variable twice, the first word
137 * is discarded, and the second one returned.
140 /* XXX - this revision ID is NOT bumping automatically -- w00t */
141 std::stringstream Revision("$Revision$");
143 Revision >> single >> single;
147 void InspIRCd::MakeLowerMap()
149 // initialize the lowercase mapping table
150 for (unsigned int cn = 0; cn < 256; cn++)
152 // lowercase the uppercase chars
153 for (unsigned int cn = 65; cn < 91; cn++)
154 lowermap[cn] = tolower(cn);
155 // now replace the specific chars for scandanavian comparison
156 lowermap[(unsigned)'['] = '{';
157 lowermap[(unsigned)']'] = '}';
158 lowermap[(unsigned)'\\'] = '|';
161 InspIRCd::InspIRCd(int argc, char** argv)
164 module_sockets.clear();
165 this->startup_time = time(NULL);
167 log(DEBUG,"*** InspIRCd starting up!");
168 if (!FileExists(CONFIG_FILE))
170 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
171 log(DEFAULT,"main: no config");
172 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
177 for (int i = 1; i < argc; i++)
179 if (!strcmp(argv[i],"-nofork")) {
180 Config->nofork = true;
182 if (!strcmp(argv[i],"-wait")) {
185 if (!strcmp(argv[i],"-nolimit")) {
186 Config->unlimitcore = true;
188 if (!strcmp(argv[i],"-logfile")) {
191 strlcpy(LOG_FILE,argv[i+1],MAXBUF);
192 printf("LOG: Setting logfile to %s\n",LOG_FILE);
196 printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
203 strlcpy(Config->MyExecutable,argv[0],MAXBUF);
205 this->MakeLowerMap();
208 Config->ClearStack();
209 Config->Read(true,NULL);
211 this->ModeGrok = new ModeParser();
212 this->Parser = new CommandParser();
213 this->stats = new serverstats();
214 AddServerName(Config->ServerName);
216 stats->BoundPortCount = BindPorts();
218 for(int t = 0; t < 255; t++)
219 Config->global_implementation[t] = 0;
221 memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
227 if (DaemonSeed() == ERROR)
229 printf("ERROR: could not go into daemon mode. Shutting down.\n");
234 /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
235 * initialize the socket engine.
237 SE = new SocketEngine();
239 /* We must load the modules AFTER initializing the socket engine, now */
244 std::string InspIRCd::GetVersionString()
246 char versiondata[MAXBUF];
248 char dnsengine[] = "multithread";
250 char dnsengine[] = "singlethread";
252 if (*Config->CustomVersion)
254 snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s",VERSION,GetRevision().c_str(),Config->ServerName,Config->CustomVersion);
258 snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s [FLAGS=%lu,%s,%s]",VERSION,GetRevision().c_str(),Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
263 char* InspIRCd::ModuleError()
268 void InspIRCd::erase_factory(int j)
271 for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
276 factory.push_back(NULL);
283 void InspIRCd::erase_module(int j)
286 for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
292 modules.push_back(NULL);
298 for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
302 Config->module_names.erase(v);
310 void InspIRCd::MoveTo(std::string modulename,int slot)
312 unsigned int v2 = 256;
313 log(DEBUG,"Moving %s to slot %d",modulename.c_str(),slot);
314 for (unsigned int v = 0; v < Config->module_names.size(); v++)
316 if (Config->module_names[v] == modulename)
318 // found an instance, swap it with the item at MODCOUNT
323 if (v2 == (unsigned int)slot)
325 log(DEBUG,"Item %s already in slot %d!",modulename.c_str(),slot);
329 // Swap the module names over
330 Config->module_names[v2] = Config->module_names[slot];
331 Config->module_names[slot] = modulename;
332 // now swap the module factories
333 ircd_module* temp = factory[v2];
334 factory[v2] = factory[slot];
335 factory[slot] = temp;
336 // now swap the module objects
337 Module* temp_module = modules[v2];
338 modules[v2] = modules[slot];
339 modules[slot] = temp_module;
340 // now swap the implement lists (we dont
341 // need to swap the global or recount it)
342 for (int n = 0; n < 255; n++)
344 char x = Config->implement_lists[v2][n];
345 Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
346 Config->implement_lists[slot][n] = x;
348 log(DEBUG,"Moved %s to slot successfully",modulename.c_str());
352 log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
356 void InspIRCd::MoveAfter(std::string modulename, std::string after)
358 log(DEBUG,"Move %s after %s...",modulename.c_str(),after.c_str());
359 for (unsigned int v = 0; v < Config->module_names.size(); v++)
361 if (Config->module_names[v] == after)
363 MoveTo(modulename, v);
369 void InspIRCd::MoveBefore(std::string modulename, std::string before)
371 log(DEBUG,"Move %s before %s...",modulename.c_str(),before.c_str());
372 for (unsigned int v = 0; v < Config->module_names.size(); v++)
374 if (Config->module_names[v] == before)
378 MoveTo(modulename, v-1);
382 MoveTo(modulename, v);
389 void InspIRCd::MoveToFirst(std::string modulename)
391 MoveTo(modulename,0);
394 void InspIRCd::MoveToLast(std::string modulename)
396 MoveTo(modulename,MODCOUNT);
399 void InspIRCd::BuildISupport()
401 // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
403 v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=(ohv)@%+ MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
404 v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
405 v << MAXAWAY << " CHANMODES=b,k,l,psmnti FNC NETWORK=" << Config->Network << " MAXPARA=32";
406 Config->data005 = v.str();
407 FOREACH_MOD(I_On005Numeric,On005Numeric(Config->data005));
410 bool InspIRCd::UnloadModule(const char* filename)
412 std::string filename_str = filename;
413 for (unsigned int j = 0; j != Config->module_names.size(); j++)
415 if (Config->module_names[j] == filename_str)
417 if (modules[j]->GetVersion().Flags & VF_STATIC)
419 log(DEFAULT,"Failed to unload STATIC module %s",filename);
420 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
423 /* Give the module a chance to tidy out all its metadata */
424 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
426 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
428 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
430 modules[j]->OnCleanup(TYPE_USER,u->second);
433 FOREACH_MOD(I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
435 for(int t = 0; t < 255; t++)
437 Config->global_implementation[t] -= Config->implement_lists[j][t];
440 /* We have to renumber implement_lists after unload because the module numbers change!
442 for(int j2 = j; j2 < 254; j2++)
444 for(int t = 0; t < 255; t++)
446 Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
451 log(DEBUG,"Deleting module...");
453 log(DEBUG,"Erasing module entry...");
455 log(DEBUG,"Removing dependent commands...");
456 Parser->RemoveCommands(filename);
457 log(DEFAULT,"Module %s unloaded",filename);
463 log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
464 snprintf(MODERR,MAXBUF,"Module not loaded");
468 bool InspIRCd::LoadModule(const char* filename)
470 char modfile[MAXBUF];
472 strlcpy(modfile,filename,MAXBUF);
474 snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
476 std::string filename_str = filename;
479 if (!DirValid(modfile))
481 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
482 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
487 log(DEBUG,"Loading module: %s",modfile);
489 if (FileExists(modfile))
492 for (unsigned int j = 0; j < Config->module_names.size(); j++)
494 if (Config->module_names[j] == filename_str)
496 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
497 snprintf(MODERR,MAXBUF,"Module already loaded");
501 ircd_module* a = new ircd_module(modfile);
502 factory[MODCOUNT+1] = a;
503 if (factory[MODCOUNT+1]->LastError())
505 log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
506 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
511 if (factory[MODCOUNT+1]->factory)
513 Module* m = factory[MODCOUNT+1]->factory->CreateModule(MyServer);
514 modules[MODCOUNT+1] = m;
515 /* save the module and the module's classfactory, if
516 * this isnt done, random crashes can occur :/ */
517 Config->module_names.push_back(filename);
519 char* x = &Config->implement_lists[MODCOUNT+1][0];
520 for(int t = 0; t < 255; t++)
523 modules[MODCOUNT+1]->Implements(x);
525 for(int t = 0; t < 255; t++)
527 Config->global_implementation[t] += Config->implement_lists[MODCOUNT+1][t];
528 if (Config->implement_lists[MODCOUNT+1][t])
530 log(DEBUG,"Add global implementation: %d %d => %d",MODCOUNT+1,t,Config->global_implementation[t]);
536 log(DEFAULT,"Unable to load %s",modfile);
537 snprintf(MODERR,MAXBUF,"Factory function failed!");
541 catch (ModuleException& modexcept)
543 log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
544 snprintf(MODERR,MAXBUF,"Factory function threw an exception: %s",modexcept.GetReason());
551 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
552 snprintf(MODERR,MAXBUF,"Module file could not be found");
557 FOREACH_MOD(I_OnLoadModule,OnLoadModule(modules[MODCOUNT],filename_str));
558 // now work out which modules, if any, want to move to the back of the queue,
559 // and if they do, move them there.
560 std::vector<std::string> put_to_back;
561 std::vector<std::string> put_to_front;
562 std::map<std::string,std::string> put_before;
563 std::map<std::string,std::string> put_after;
564 for (unsigned int j = 0; j < Config->module_names.size(); j++)
566 if (modules[j]->Prioritize() == PRIORITY_LAST)
568 put_to_back.push_back(Config->module_names[j]);
570 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
572 put_to_front.push_back(Config->module_names[j]);
574 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
576 log(DEBUG,"Module %d wants PRIORITY_BEFORE",j);
577 put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
578 log(DEBUG,"Before: %s",Config->module_names[modules[j]->Prioritize() >> 8].c_str());
580 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
582 log(DEBUG,"Module %d wants PRIORITY_AFTER",j);
583 put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
584 log(DEBUG,"After: %s",Config->module_names[modules[j]->Prioritize() >> 8].c_str());
587 for (unsigned int j = 0; j < put_to_back.size(); j++)
589 MoveToLast(put_to_back[j]);
591 for (unsigned int j = 0; j < put_to_front.size(); j++)
593 MoveToFirst(put_to_front[j]);
595 for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
597 MoveBefore(j->first,j->second);
599 for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
601 MoveAfter(j->first,j->second);
607 void InspIRCd::DoOneIteration(bool process_module_sockets)
609 bool expire_run = false;
610 int activefds[MAX_DESCRIPTORS];
614 InspSocket* s = NULL;
615 InspSocket* s_del = NULL;
616 unsigned int numberactive;
617 sockaddr_in sock_us; // our port number
618 socklen_t uslen; // length of our port number
620 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
621 * Once per loop iteration is pleanty.
626 /* Run background module timers every few seconds
627 * (the docs say modules shouldnt rely on accurate
628 * timing using this event, so we dont have to
629 * time this exactly).
631 if (((TIME % 5) == 0) && (!expire_run))
634 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
635 TickMissedTimers(TIME);
639 else if ((TIME % 5) == 1)
644 /* Once a second, do the background processing */
648 WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
649 DoBackgroundUserStuff(TIME);
652 /* Process timeouts on module sockets each time around
653 * the loop. There shouldnt be many module sockets, at
654 * most, 20 or so, so this won't be much of a performance
657 if (process_module_sockets)
658 DoSocketTimeouts(TIME);
662 /* Call the socket engine to wait on the active
663 * file descriptors. The socket engine has everything's
664 * descriptors in its list... dns, modules, users,
665 * servers... so its nice and easy, just one call.
667 if (!(numberactive = SE->Wait(activefds)))
671 * Now process each of the fd's. For users, we have a fast
672 * lookup table which can find a user by file descriptor, so
673 * processing them by fd isnt expensive. If we have a lot of
674 * listening ports or module sockets though, things could get
677 for (unsigned int activefd = 0; activefd < numberactive; activefd++)
679 int socket_type = SE->GetType(activefds[activefd]);
684 cu = fd_ref_table[activefds[activefd]];
692 if (!process_module_sockets)
695 /* Process module-owned sockets.
696 * Modules are encouraged to inherit their sockets from
697 * InspSocket so we can process them neatly like this.
699 s = socket_ref[activefds[activefd]];
701 if ((s) && (!s->Poll()))
703 log(DEBUG,"Socket poll returned false, close and bail");
704 SE->DelFd(s->GetFd());
705 for (std::vector<InspSocket*>::iterator a = module_sockets.begin(); a < module_sockets.end(); a++)
707 s_del = (InspSocket*)*a;
708 if ((s_del) && (s_del->GetFd() == activefds[activefd]))
710 module_sockets.erase(a);
720 /* When we are using single-threaded dns,
721 * the sockets for dns end up in our mainloop.
722 * When we are using multi-threaded dns,
723 * each thread has its own basic poll() loop
724 * within it, making them 'fire and forget'
725 * and independent of the mainloop.
728 dns_poll(activefds[activefd]);
734 /* It's a listener */
735 uslen = sizeof(sock_us);
736 length = sizeof(client);
737 incomingSockfd = accept (activefds[activefd],(struct sockaddr*)&client,&length);
739 if ((incomingSockfd > -1) && (!getsockname(incomingSockfd,(sockaddr*)&sock_us,&uslen)))
741 in_port = ntohs(sock_us.sin_port);
742 log(DEBUG,"Accepted socket %d",incomingSockfd);
743 /* Years and years ago, we used to resolve here
744 * using gethostbyaddr(). That is sucky and we
745 * don't do that any more...
747 NonBlocking(incomingSockfd);
748 if (Config->GetIOHook(in_port))
752 Config->GetIOHook(in_port)->OnRawSocketAccept(incomingSockfd, (char*)inet_ntoa(client.sin_addr), in_port);
754 catch (ModuleException& modexcept)
756 log(DEBUG,"Module exception cought: %s",modexcept.GetReason()); \
759 stats->statsAccept++;
760 AddClient(incomingSockfd, in_port, false, client.sin_addr);
761 log(DEBUG,"Adding client on port %lu fd=%lu",(unsigned long)in_port,(unsigned long)incomingSockfd);
765 log(DEBUG,"Accept failed on fd %lu: %s",(unsigned long)incomingSockfd,strerror(errno));
766 shutdown(incomingSockfd,2);
767 close(incomingSockfd);
768 stats->statsRefused++;
773 /* Something went wrong if we're in here.
774 * In fact, so wrong, im not quite sure
775 * what we would do, so for now, its going
776 * to safely do bugger all.
785 /* Until THIS point, ServerInstance == NULL */
787 LoadAllModules(this);
789 printf("\nInspIRCd is now running!\n");
793 freopen("/dev/null","w",stdout);
794 freopen("/dev/null","w",stderr);
797 /* Add the listening sockets used for client inbound connections
798 * to the socket engine
800 for (int count = 0; count < stats->BoundPortCount; count++)
801 SE->AddFd(openSockfd[count],true,X_LISTEN);
803 WritePID(Config->PID);
805 /* main loop, this never returns */
808 DoOneIteration(true);
810 /* This is never reached -- we hope! */
814 /**********************************************************************************/
817 * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
820 int main(int argc, char** argv)
822 ServerInstance = new InspIRCd(argc, argv);
823 ServerInstance->Run();
824 delete ServerInstance;