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[65535];
81 time_t TIME = time(NULL), OLDTIME = time(NULL);
83 SocketEngine* SE = NULL;
85 // This table references users by file descriptor.
86 // its an array to make it VERY fast, as all lookups are referenced
87 // by an integer, meaning there is no need for a scan/search operation.
88 userrec* fd_ref_table[65536];
90 Server* MyServer = new Server;
91 ServerConfig *Config = new ServerConfig;
96 servernamelist servernames;
99 void AddServerName(std::string servername)
101 log(DEBUG,"Adding server name: %s",servername.c_str());
102 for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
104 if (*a == servername)
107 servernames.push_back(servername);
110 const char* FindServerNamePtr(std::string servername)
112 for (servernamelist::iterator a = servernames.begin(); a < servernames.end(); a++)
114 if (*a == servername)
117 AddServerName(servername);
118 return FindServerNamePtr(servername);
121 std::string InspIRCd::GetRevision()
123 /* w00t got me to replace a bunch of strtok_r
124 * with something nicer, so i did this. Its the
125 * same thing really, only in C++. It places the
126 * text into a std::stringstream which is a readable
127 * and writeable buffer stream, and then pops two
128 * words off it, space delimited. Because it reads
129 * into the same variable twice, the first word
130 * is discarded, and the second one returned.
132 std::stringstream Revision("$Revision$");
134 Revision >> single >> single;
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");
167 for (int i = 1; i < argc; i++)
169 if (!strcmp(argv[i],"-nofork")) {
170 Config->nofork = true;
172 if (!strcmp(argv[i],"-wait")) {
175 if (!strcmp(argv[i],"-nolimit")) {
176 Config->unlimitcore = true;
181 strlcpy(Config->MyExecutable,argv[0],MAXBUF);
183 this->MakeLowerMap();
186 Config->ClearStack();
187 Config->Read(true,NULL);
189 this->ModeGrok = new ModeParser();
190 this->Parser = new CommandParser();
191 this->stats = new serverstats();
192 AddServerName(Config->ServerName);
194 stats->BoundPortCount = BindPorts();
199 if (DaemonSeed() == ERROR)
201 printf("ERROR: could not go into daemon mode. Shutting down.\n");
206 /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
207 * initialize the socket engine.
209 SE = new SocketEngine();
211 /* We must load the modules AFTER initializing the socket engine, now */
216 std::string InspIRCd::GetVersionString()
218 char versiondata[MAXBUF];
220 char dnsengine[] = "multithread";
222 char dnsengine[] = "singlethread";
224 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);
228 char* InspIRCd::ModuleError()
233 void InspIRCd::erase_factory(int j)
236 for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
241 factory.push_back(NULL);
248 void InspIRCd::erase_module(int j)
251 for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
257 modules.push_back(NULL);
263 for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
267 Config->module_names.erase(v);
275 bool InspIRCd::UnloadModule(const char* filename)
277 std::string filename_str = filename;
278 for (unsigned int j = 0; j != Config->module_names.size(); j++)
280 if (Config->module_names[j] == filename_str)
282 if (modules[j]->GetVersion().Flags & VF_STATIC)
284 log(DEFAULT,"Failed to unload STATIC module %s",filename);
285 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
288 /* Give the module a chance to tidy out all its metadata */
289 for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
291 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
293 for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
295 modules[j]->OnCleanup(TYPE_USER,u->second);
297 FOREACH_MOD(I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
299 log(DEBUG,"Deleting module...");
301 log(DEBUG,"Erasing module entry...");
303 log(DEBUG,"Removing dependent commands...");
304 Parser->RemoveCommands(filename);
305 log(DEFAULT,"Module %s unloaded",filename);
310 log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
311 snprintf(MODERR,MAXBUF,"Module not loaded");
315 bool InspIRCd::LoadModule(const char* filename)
317 char modfile[MAXBUF];
319 snprintf(modfile,MAXBUF,"%s",filename);
321 snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
323 std::string filename_str = filename;
325 if (!DirValid(modfile))
327 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
328 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
332 log(DEBUG,"Loading module: %s",modfile);
334 if (FileExists(modfile))
337 for (unsigned int j = 0; j < Config->module_names.size(); j++)
339 if (Config->module_names[j] == filename_str)
341 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
342 snprintf(MODERR,MAXBUF,"Module already loaded");
346 ircd_module* a = new ircd_module(modfile);
347 factory[MODCOUNT+1] = a;
348 if (factory[MODCOUNT+1]->LastError())
350 log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
351 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
355 if (factory[MODCOUNT+1]->factory)
357 Module* m = factory[MODCOUNT+1]->factory->CreateModule(MyServer);
358 modules[MODCOUNT+1] = m;
359 /* save the module and the module's classfactory, if
360 * this isnt done, random crashes can occur :/ */
361 Config->module_names.push_back(filename);
363 char* x = &Config->implement_lists[MODCOUNT+1][0];
364 for(int t = 0; t < 255; t++)
367 modules[MODCOUNT+1]->Implements(x);
371 log(DEFAULT,"Unable to load %s",modfile);
372 snprintf(MODERR,MAXBUF,"Factory function failed!");
379 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
380 snprintf(MODERR,MAXBUF,"Module file could not be found");
385 FOREACH_MOD(I_OnLoadModule,OnLoadModule(modules[MODCOUNT],filename_str));
391 bool expire_run = false;
392 std::vector<int> activefds;
396 InspSocket* s = NULL;
397 InspSocket* s_del = NULL;
399 unsigned int numberactive;
400 sockaddr_in sock_us; // our port number
401 socklen_t uslen; // length of our port number
403 /* Until THIS point, ServerInstance == NULL */
405 LoadAllModules(this);
407 printf("\nInspIRCd is now running!\n");
411 freopen("/dev/null","w",stdout);
412 freopen("/dev/null","w",stderr);
415 /* Add the listening sockets used for client inbound connections
416 * to the socket engine
418 for (int count = 0; count < stats->BoundPortCount; count++)
419 SE->AddFd(openSockfd[count],true,X_LISTEN);
421 WritePID(Config->PID);
423 /* main loop, this never returns */
426 /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
427 * Once per loop iteration is pleanty.
432 /* Run background module timers every few seconds
433 * (the docs say modules shouldnt rely on accurate
434 * timing using this event, so we dont have to
435 * time this exactly).
437 if (((TIME % 8) == 0) && (!expire_run))
440 FOREACH_MOD(I_OnBackgroundTimer,OnBackgroundTimer(TIME));
447 /* Once a second, do the background processing */
449 while (DoBackgroundUserStuff(TIME));
451 /* Call the socket engine to wait on the active
452 * file descriptors. The socket engine has everything's
453 * descriptors in its list... dns, modules, users,
454 * servers... so its nice and easy, just one call.
459 * Now process each of the fd's. For users, we have a fast
460 * lookup table which can find a user by file descriptor, so
461 * processing them by fd isnt expensive. If we have a lot of
462 * listening ports or module sockets though, things could get
465 numberactive = activefds.size();
466 for (unsigned int activefd = 0; activefd < numberactive; activefd++)
468 int socket_type = SE->GetType(activefds[activefd]);
473 cu = fd_ref_table[activefds[activefd]];
481 /* Process module-owned sockets.
482 * Modules are encouraged to inherit their sockets from
483 * InspSocket so we can process them neatly like this.
485 s = socket_ref[activefds[activefd]];
487 if ((s) && (!s->Poll()))
489 log(DEBUG,"Socket poll returned false, close and bail");
490 SE->DelFd(s->GetFd());
491 for (std::vector<InspSocket*>::iterator a = module_sockets.begin(); a < module_sockets.end(); a++)
493 s_del = (InspSocket*)*a;
494 if ((s_del) && (s_del->GetFd() == activefds[activefd]))
496 module_sockets.erase(a);
508 /* When we are using single-threaded dns,
509 * the sockets for dns end up in our mainloop.
510 * When we are using multi-threaded dns,
511 * each thread has its own basic poll() loop
512 * within it, making them 'fire and forget'
513 * and independent of the mainloop.
516 dns_poll(activefds[activefd]);
522 /* It's a listener */
523 uslen = sizeof(sock_us);
524 length = sizeof(client);
525 incomingSockfd = accept (activefds[activefd],(struct sockaddr*)&client,&length);
526 if (!getsockname(incomingSockfd,(sockaddr*)&sock_us,&uslen))
528 in_port = ntohs(sock_us.sin_port);
529 log(DEBUG,"Accepted socket %d",incomingSockfd);
530 target = (char*)inet_ntoa(client.sin_addr);
531 /* Years and years ago, we used to resolve here
532 * using gethostbyaddr(). That is sucky and we
533 * don't do that any more...
535 if (incomingSockfd >= 0)
537 NonBlocking(incomingSockfd);
538 if (Config->GetIOHook(in_port))
540 Config->GetIOHook(in_port)->OnRawSocketAccept(incomingSockfd, target, in_port);
542 stats->statsAccept++;
543 AddClient(incomingSockfd, target, in_port, false, target);
544 log(DEBUG,"Adding client on port %lu fd=%lu",(unsigned long)in_port,(unsigned long)incomingSockfd);
548 WriteOpers("*** WARNING: accept() failed on port %lu (%s)",(unsigned long)in_port,target);
549 log(DEBUG,"accept failed: %lu",(unsigned long)in_port);
550 stats->statsRefused++;
555 log(DEBUG,"Couldnt look up the port number for fd %lu (OS BROKEN?!)",incomingSockfd);
556 shutdown(incomingSockfd,2);
557 close(incomingSockfd);
562 /* Something went wrong if we're in here.
563 * In fact, so wrong, im not quite sure
564 * what we would do, so for now, its going
565 * to safely do bugger all.
572 /* This is never reached -- we hope! */
576 /**********************************************************************************/
579 * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
582 int main(int argc, char** argv)
584 ServerInstance = new InspIRCd(argc, argv);
585 ServerInstance->Run();
586 delete ServerInstance;