1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * Inspire is copyright (C) 2002-2005 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"
26 #include <sys/errno.h>
27 #include <sys/ioctl.h>
28 #include <sys/utsname.h>
32 #include <ext/hash_map>
53 #include "inspstring.h"
55 #include "helperfuncs.h"
57 #include "socketengine.h"
58 #include "userprocess.h"
61 #include "command_parse.h"
63 InspIRCd* ServerInstance;
65 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
66 int WHOWAS_MAX = 100; // default 100 people maximum in the WHOWAS list
68 extern std::vector<Module*> modules;
69 extern std::vector<ircd_module*> factory;
71 std::vector<InspSocket*> module_sockets;
72 std::vector<userrec*> local_users;
75 int openSockfd[MAXSOCKS];
76 sockaddr_in client,server;
79 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
81 time_t TIME = time(NULL), OLDTIME = time(NULL);
83 // This table references users by file descriptor.
84 // its an array to make it VERY fast, as all lookups are referenced
85 // by an integer, meaning there is no need for a scan/search operation.
86 userrec* fd_ref_table[65536];
88 Server* MyServer = new Server;
89 ServerConfig *Config = new ServerConfig;
94 servernamelist servernames;
97 void AddServerName(std::string servername)
99 log(DEBUG,"Adding server name: %s",servername.c_str());
100 for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
102 if (*a == servername)
105 servernames.push_back(servername);
108 const char* FindServerNamePtr(std::string servername)
110 for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
112 if (*a == servername)
115 AddServerName(servername);
116 return FindServerNamePtr(servername);
119 std::string InspIRCd::GetRevision()
121 /* w00t got me to replace a bunch of strtok_r
122 * with something nicer, so i did this. Its the
123 * same thing really, only in C++. It places the
124 * text into a std::stringstream which is a readable
125 * and writeable buffer stream, and then pops two
126 * words off it, space delimited. Because it reads
127 * into the same variable twice, the first word
128 * is discarded, and the second one returned.
130 std::stringstream Revision("$Revision$");
132 Revision >> single >> single;
136 void InspIRCd::MakeLowerMap()
138 // initialize the lowercase mapping table
139 for (unsigned int cn = 0; cn < 256; cn++)
141 // lowercase the uppercase chars
142 for (unsigned int cn = 65; cn < 91; cn++)
143 lowermap[cn] = tolower(cn);
144 // now replace the specific chars for scandanavian comparison
145 lowermap[(unsigned)'['] = '{';
146 lowermap[(unsigned)']'] = '}';
147 lowermap[(unsigned)'\\'] = '|';
150 InspIRCd::InspIRCd(int argc, char** argv)
153 module_sockets.clear();
154 this->startup_time = time(NULL);
156 log(DEBUG,"*** InspIRCd starting up!");
157 if (!FileExists(CONFIG_FILE))
159 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
160 log(DEFAULT,"main: no config");
161 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
165 for (int i = 1; i < argc; i++)
167 if (!strcmp(argv[i],"-nofork")) {
168 Config->nofork = true;
170 if (!strcmp(argv[i],"-wait")) {
173 if (!strcmp(argv[i],"-nolimit")) {
174 Config->unlimitcore = true;
179 strlcpy(Config->MyExecutable,argv[0],MAXBUF);
181 this->MakeLowerMap();
184 Config->ClearStack();
185 Config->Read(true,NULL);
187 this->ModeGrok = new ModeParser();
188 this->Parser = new CommandParser();
189 this->stats = new serverstats();
190 AddServerName(Config->ServerName);
192 stats->BoundPortCount = BindPorts();
194 for(int t = 0; t < 255; t++)
195 Config->global_implementation[t] = 0;
197 memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
203 if (DaemonSeed() == ERROR)
205 printf("ERROR: could not go into daemon mode. Shutting down.\n");
210 /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
211 * initialize the socket engine.
213 SE = new SocketEngine();
215 /* We must load the modules AFTER initializing the socket engine, now */
220 std::string InspIRCd::GetVersionString()
222 char versiondata[MAXBUF];
224 char dnsengine[] = "multithread";
226 char dnsengine[] = "singlethread";
228 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);
232 char* InspIRCd::ModuleError()
237 void InspIRCd::erase_factory(int j)
240 for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
245 factory.push_back(NULL);
252 void InspIRCd::erase_module(int j)
255 for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
261 modules.push_back(NULL);
267 for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
271 Config->module_names.erase(v);
279 void InspIRCd::MoveTo(std::string modulename,int slot)
281 unsigned int v2 = 256;
282 log(DEBUG,"Moving %s to slot %d",modulename.c_str(),slot);
283 for (unsigned int v = 0; v < Config->module_names.size(); v++)
285 if (Config->module_names[v] == modulename)
287 // found an instance, swap it with the item at MODCOUNT
292 if (v2 == (unsigned int)slot)
294 log(DEBUG,"Item %s already in slot %d!",modulename.c_str(),slot);
298 // Swap the module names over
299 Config->module_names[v2] = Config->module_names[slot];
300 Config->module_names[slot] = modulename;
301 // now swap the module factories
302 ircd_module* temp = factory[v2];
303 factory[v2] = factory[slot];
304 factory[slot] = temp;
305 // now swap the module objects
306 Module* temp_module = modules[v2];
307 modules[v2] = modules[slot];
308 modules[slot] = temp_module;
309 // now swap the implement lists (we dont
310 // need to swap the global or recount it)
311 for (int n = 0; n < 255; n++)
313 char x = Config->implement_lists[v2][n];
314 Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
315 Config->implement_lists[slot][n] = x;
317 log(DEBUG,"Moved %s to slot successfully",modulename.c_str());
321 log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
325 void InspIRCd::MoveToFirst(std::string modulename)
327 MoveTo(modulename,0);
330 void InspIRCd::MoveToLast(std::string modulename)
332 MoveTo(modulename,MODCOUNT);
335 void InspIRCd::BuildISupport()
337 // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
339 v << "WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 NICKLEN=" << NICKMAX;
340 v << " CASEMAPPING=rfc1459 STATUSMSG=@+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=20 AWAYLEN=";
341 v << MAXAWAY << " CHANMODES=ohvb,k,l,psmnti NETWORK=" << Config->Network;
342 Config->data005 = v.str();
343 FOREACH_MOD(I_On005Numeric,On005Numeric(Config->data005));
346 bool InspIRCd::UnloadModule(const char* filename)
348 std::string filename_str = filename;
349 for (unsigned int j = 0; j != Config->module_names.size(); j++)
351 if (Config->module_names[j] == filename_str)
353 if (modules[j]->GetVersion().Flags & VF_STATIC)
355 log(DEFAULT,"Failed to unload STATIC module %s",filename);
356 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
359 /* Give the module a chance to tidy out all its metadata */
360 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
362 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
364 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
366 modules[j]->OnCleanup(TYPE_USER,u->second);
369 for(int t = 0; t < 255; t++)
371 Config->global_implementation[t] -= Config->implement_lists[j][t];
374 /* We have to renumber implement_lists after unload because the module numbers change!
376 for(int j2 = j; j2 < 254; j2++)
378 for(int t = 0; t < 255; t++)
380 Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
384 FOREACH_MOD(I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
386 log(DEBUG,"Deleting module...");
388 log(DEBUG,"Erasing module entry...");
390 log(DEBUG,"Removing dependent commands...");
391 Parser->RemoveCommands(filename);
392 log(DEFAULT,"Module %s unloaded",filename);
398 log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
399 snprintf(MODERR,MAXBUF,"Module not loaded");
403 bool InspIRCd::LoadModule(const char* filename)
405 char modfile[MAXBUF];
407 strlcpy(modfile,filename,MAXBUF);
409 snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
411 std::string filename_str = filename;
413 if (!DirValid(modfile))
415 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
416 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
420 log(DEBUG,"Loading module: %s",modfile);
422 if (FileExists(modfile))
425 for (unsigned int j = 0; j < Config->module_names.size(); j++)
427 if (Config->module_names[j] == filename_str)
429 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
430 snprintf(MODERR,MAXBUF,"Module already loaded");
434 ircd_module* a = new ircd_module(modfile);
435 factory[MODCOUNT+1] = a;
436 if (factory[MODCOUNT+1]->LastError())
438 log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
439 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
443 if (factory[MODCOUNT+1]->factory)
445 Module* m = factory[MODCOUNT+1]->factory->CreateModule(MyServer);
446 modules[MODCOUNT+1] = m;
447 /* save the module and the module's classfactory, if
448 * this isnt done, random crashes can occur :/ */
449 Config->module_names.push_back(filename);
451 char* x = &Config->implement_lists[MODCOUNT+1][0];
452 for(int t = 0; t < 255; t++)
455 modules[MODCOUNT+1]->Implements(x);
457 for(int t = 0; t < 255; t++)
459 Config->global_implementation[t] += Config->implement_lists[MODCOUNT+1][t];
460 if (Config->implement_lists[MODCOUNT+1][t])
462 log(DEBUG,"Add global implementation: %d %d => %d",MODCOUNT+1,t,Config->global_implementation[t]);
468 log(DEFAULT,"Unable to load %s",modfile);
469 snprintf(MODERR,MAXBUF,"Factory function failed!");
476 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
477 snprintf(MODERR,MAXBUF,"Module file could not be found");
482 FOREACH_MOD(I_OnLoadModule,OnLoadModule(modules[MODCOUNT],filename_str));
483 // now work out which modules, if any, want to move to the back of the queue,
484 // and if they do, move them there.
485 std::vector<std::string> put_to_back;
486 std::vector<std::string> put_to_front;
487 for (unsigned int j = 0; j < Config->module_names.size(); j++)
489 if (modules[j]->Prioritize() == PRIORITY_LAST)
491 put_to_back.push_back(Config->module_names[j]);
493 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
495 put_to_front.push_back(Config->module_names[j]);
498 for (unsigned int j = 0; j < put_to_back.size(); j++)
500 MoveToLast(put_to_back[j]);
502 for (unsigned int j = 0; j < put_to_front.size(); j++)
504 MoveToFirst(put_to_front[j]);
512 bool expire_run = false;
513 int activefds[MAX_DESCRIPTORS];
517 InspSocket* s = NULL;
518 InspSocket* s_del = NULL;
520 unsigned int numberactive;
521 sockaddr_in sock_us; // our port number
522 socklen_t uslen; // length of our port number
524 /* Until THIS point, ServerInstance == NULL */
526 LoadAllModules(this);
528 printf("\nInspIRCd is now running!\n");
532 freopen("/dev/null","w",stdout);
533 freopen("/dev/null","w",stderr);
536 /* Add the listening sockets used for client inbound connections
537 * to the socket engine
539 for (int count = 0; count < stats->BoundPortCount; count++)
540 SE->AddFd(openSockfd[count],true,X_LISTEN);
542 WritePID(Config->PID);
544 /* main loop, this never returns */
547 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
548 * Once per loop iteration is pleanty.
553 /* Run background module timers every few seconds
554 * (the docs say modules shouldnt rely on accurate
555 * timing using this event, so we dont have to
556 * time this exactly).
558 if (((TIME % 8) == 0) && (!expire_run))
561 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
565 else if ((TIME % 8) == 1)
570 /* Once a second, do the background processing */
572 DoBackgroundUserStuff(TIME);
574 /* Call the socket engine to wait on the active
575 * file descriptors. The socket engine has everything's
576 * descriptors in its list... dns, modules, users,
577 * servers... so its nice and easy, just one call.
579 if (!(numberactive = SE->Wait(activefds)))
583 * Now process each of the fd's. For users, we have a fast
584 * lookup table which can find a user by file descriptor, so
585 * processing them by fd isnt expensive. If we have a lot of
586 * listening ports or module sockets though, things could get
589 for (unsigned int activefd = 0; activefd < numberactive; activefd++)
591 int socket_type = SE->GetType(activefds[activefd]);
596 cu = fd_ref_table[activefds[activefd]];
604 /* Process module-owned sockets.
605 * Modules are encouraged to inherit their sockets from
606 * InspSocket so we can process them neatly like this.
608 s = socket_ref[activefds[activefd]];
610 if ((s) && (!s->Poll()))
612 log(DEBUG,"Socket poll returned false, close and bail");
613 SE->DelFd(s->GetFd());
614 for (std::vector<InspSocket*>::iterator a = module_sockets.begin(); a < module_sockets.end(); a++)
616 s_del = (InspSocket*)*a;
617 if ((s_del) && (s_del->GetFd() == activefds[activefd]))
619 module_sockets.erase(a);
631 /* When we are using single-threaded dns,
632 * the sockets for dns end up in our mainloop.
633 * When we are using multi-threaded dns,
634 * each thread has its own basic poll() loop
635 * within it, making them 'fire and forget'
636 * and independent of the mainloop.
639 dns_poll(activefds[activefd]);
645 /* It's a listener */
646 uslen = sizeof(sock_us);
647 length = sizeof(client);
648 incomingSockfd = accept (activefds[activefd],(struct sockaddr*)&client,&length);
649 if (!getsockname(incomingSockfd,(sockaddr*)&sock_us,&uslen))
651 in_port = ntohs(sock_us.sin_port);
652 log(DEBUG,"Accepted socket %d",incomingSockfd);
653 target = (char*)inet_ntoa(client.sin_addr);
654 /* Years and years ago, we used to resolve here
655 * using gethostbyaddr(). That is sucky and we
656 * don't do that any more...
658 if (incomingSockfd >= 0)
660 NonBlocking(incomingSockfd);
661 if (Config->GetIOHook(in_port))
663 Config->GetIOHook(in_port)->OnRawSocketAccept(incomingSockfd, target, in_port);
665 stats->statsAccept++;
666 AddClient(incomingSockfd, target, in_port, false, target);
667 log(DEBUG,"Adding client on port %lu fd=%lu",(unsigned long)in_port,(unsigned long)incomingSockfd);
671 WriteOpers("*** WARNING: accept() failed on port %lu (%s)",(unsigned long)in_port,target);
672 log(DEBUG,"accept failed: %lu",(unsigned long)in_port);
673 stats->statsRefused++;
678 log(DEBUG,"Couldnt look up the port number for fd %lu (OS BROKEN?!)",incomingSockfd);
679 shutdown(incomingSockfd,2);
680 close(incomingSockfd);
685 /* Something went wrong if we're in here.
686 * In fact, so wrong, im not quite sure
687 * what we would do, so for now, its going
688 * to safely do bugger all.
695 /* This is never reached -- we hope! */
699 /**********************************************************************************/
702 * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
705 int main(int argc, char** argv)
707 ServerInstance = new InspIRCd(argc, argv);
708 ServerInstance->Run();
709 delete ServerInstance;