/* --------------------------------------------------------------------- * * +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. * E-mail: * * * * Written by Craig Edwards, Craig McLure, and others. * This program is free but copyrighted software; you can redistribute * it and/or modify it under the terms of the GNU General Public * License as published by the Free Software Foundation, version 2 * (two) ONLY. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * --------------------------------------------------------------------- */ #include "inspircd.h" #include "configreader.h" #include #include #include #include #include #include #include #include #include #include #include #include "modules.h" #include "mode.h" #include "xline.h" #include "socketengine.h" #include "inspircd_se_config.h" #include "socket.h" #include "typedefs.h" #include "command_parse.h" using irc::sockets::NonBlocking; using irc::sockets::insp_ntoa; using irc::sockets::insp_inaddr; using irc::sockets::insp_sockaddr; InspIRCd* SI = NULL; void InspIRCd::AddServerName(const std::string &servername) { this->Log(DEBUG,"Adding server name: %s",servername.c_str()); if(find(servernames.begin(), servernames.end(), servername) == servernames.end()) servernames.push_back(servername); /* Wasn't already there. */ } const char* InspIRCd::FindServerNamePtr(const std::string &servername) { servernamelist::iterator iter = find(servernames.begin(), servernames.end(), servername); if(iter == servernames.end()) { AddServerName(servername); iter = --servernames.end(); } return iter->c_str(); } bool InspIRCd::FindServerName(const std::string &servername) { return (find(servernames.begin(), servernames.end(), servername) != servernames.end()); } void InspIRCd::Exit(int status) { exit (status); } void InspIRCd::Start() { printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__); printf("(C) ChatSpike Development team.\033[0m\n\n"); printf("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\033[0m\n"); printf("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n"); printf("Name concept:\t\t\033[1;32mLord_Zathras\033[0m\n\n"); } void InspIRCd::Rehash(int status) { SI->WriteOpers("Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(CONFIG_FILE)); fclose(SI->Config->log_file); SI->OpenLog(NULL,0); SI->Config->Read(false,NULL); FOREACH_MOD_I(SI,I_OnRehash,OnRehash("")); } void InspIRCd::SetSignals(bool SEGVHandler) { signal(SIGALRM, SIG_IGN); signal(SIGHUP, InspIRCd::Rehash); signal(SIGPIPE, SIG_IGN); signal(SIGTERM, InspIRCd::Exit); signal(SIGCHLD, SIG_IGN); } bool InspIRCd::DaemonSeed() { int childpid; if ((childpid = fork ()) < 0) return (ERROR); else if (childpid > 0) { /* We wait here for the child process to kill us, * so that the shell prompt doesnt come back over * the output. * Sending a kill with a signal of 0 just checks * if the child pid is still around. If theyre not, * they threw an error and we should give up. */ while (kill(childpid, 0) != -1) { sleep(1); } exit(ERROR); } setsid (); umask (007); printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid()); rlimit rl; if (getrlimit(RLIMIT_CORE, &rl) == -1) { this->Log(DEFAULT,"Failed to getrlimit()!"); return false; } else { rl.rlim_cur = rl.rlim_max; if (setrlimit(RLIMIT_CORE, &rl) == -1) this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size."); } return true; } void InspIRCd::WritePID(const std::string &filename) { std::ofstream outfile(filename.c_str()); if (outfile.is_open()) { outfile << getpid(); outfile.close(); } else { printf("Failed to write PID-file '%s', exiting.\n",filename.c_str()); this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",filename.c_str()); Exit(0); } } std::string InspIRCd::GetRevision() { return REVISION; } InspIRCd::InspIRCd(int argc, char** argv) : ModCount(-1), duration_m(60), duration_h(60*60), duration_d(60*60*24), duration_w(60*60*24*7), duration_y(60*60*24*365) { bool SEGVHandler = false; modules.resize(255); factory.resize(255); this->Config = new ServerConfig(this); this->Start(); this->module_sockets.clear(); this->TIME = this->OLDTIME = this->startup_time = time(NULL); srand(this->TIME); this->Log(DEBUG,"*** InspIRCd starting up!"); if (!ServerConfig::FileExists(CONFIG_FILE)) { printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE); this->Log(DEFAULT,"main: no config"); printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n"); Exit(ERROR); } *this->LogFileName = 0; if (argc > 1) { for (int i = 1; i < argc; i++) { if (!strcmp(argv[i],"-nofork")) { Config->nofork = true; } else if(!strcmp(argv[i],"-debug")) { Config->forcedebug = true; } else if(!strcmp(argv[i],"-nolog")) { Config->writelog = false; } else if (!strcmp(argv[i],"-wait")) { sleep(6); } else if (!strcmp(argv[i],"-nolimit")) { printf("WARNING: The `-nolimit' option is deprecated, and now on by default. This behaviour may change in the future.\n"); } else if (!strcmp(argv[i],"-notraceback")) { SEGVHandler = false; } else if (!strcmp(argv[i],"-logfile")) { if (argc > i+1) { strlcpy(LogFileName,argv[i+1],MAXBUF); printf("LOG: Setting logfile to %s\n",LogFileName); } else { printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n"); Exit(ERROR); } i++; } else { printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-nolimit] [-notraceback] [-logfile ]\n",argv[0]); Exit(ERROR); } } } strlcpy(Config->MyExecutable,argv[0],MAXBUF); this->OpenLog(argv, argc); this->stats = new serverstats(); this->Parser = new CommandParser(this); this->Timers = new TimerManager(); this->XLines = new XLineManager(this); Config->ClearStack(); Config->Read(true, NULL); this->CheckRoot(); this->Modes = new ModeParser(this); this->AddServerName(Config->ServerName); CheckDie(); InitializeDisabledCommands(Config->DisabledCommands, this); stats->BoundPortCount = BindPorts(true); for(int t = 0; t < 255; t++) Config->global_implementation[t] = 0; memset(&Config->implement_lists,0,sizeof(Config->implement_lists)); printf("\n"); this->SetSignals(SEGVHandler); if (!Config->nofork) { if (!this->DaemonSeed()) { printf("ERROR: could not go into daemon mode. Shutting down.\n"); Exit(ERROR); } } /* Because of limitations in kqueue on freebsd, we must fork BEFORE we * initialize the socket engine. */ SocketEngineFactory* SEF = new SocketEngineFactory(); SE = SEF->Create(this); delete SEF; this->Res = new DNS(this); this->LoadAllModules(); /* Just in case no modules were loaded - fix for bug #101 */ this->BuildISupport(); if (!stats->BoundPortCount) { printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n"); Exit(ERROR); } /* Add the listening sockets used for client inbound connections * to the socket engine */ this->Log(DEBUG,"%d listeners",stats->BoundPortCount); for (unsigned long count = 0; count < stats->BoundPortCount; count++) { this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]); if (!SE->AddFd(Config->openSockfd[count])) { printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n"); Exit(ERROR); } } if (!Config->nofork) { if (kill(getppid(), SIGTERM) == -1) printf("Error killing parent process: %s\n",strerror(errno)); fclose(stdin); fclose(stderr); fclose(stdout); } printf("\nInspIRCd is now running!\n"); this->WritePID(Config->PID); } std::string InspIRCd::GetVersionString() { char versiondata[MAXBUF]; char dnsengine[] = "singlethread-object"; if (*Config->CustomVersion) { snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion); } else { snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine); } return versiondata; } char* InspIRCd::ModuleError() { return MODERR; } void InspIRCd::EraseFactory(int j) { int v = 0; for (std::vector::iterator t = factory.begin(); t != factory.end(); t++) { if (v == j) { factory.erase(t); factory.push_back(NULL); return; } v++; } } void InspIRCd::EraseModule(int j) { int v1 = 0; for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++) { if (v1 == j) { DELETE(*m); modules.erase(m); modules.push_back(NULL); break; } v1++; } int v2 = 0; for (std::vector::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++) { if (v2 == j) { Config->module_names.erase(v); break; } v2++; } } void InspIRCd::MoveTo(std::string modulename,int slot) { unsigned int v2 = 256; for (unsigned int v = 0; v < Config->module_names.size(); v++) { if (Config->module_names[v] == modulename) { // found an instance, swap it with the item at the end v2 = v; break; } } if ((v2 != (unsigned int)slot) && (v2 < 256)) { // Swap the module names over Config->module_names[v2] = Config->module_names[slot]; Config->module_names[slot] = modulename; // now swap the module factories ircd_module* temp = factory[v2]; factory[v2] = factory[slot]; factory[slot] = temp; // now swap the module objects Module* temp_module = modules[v2]; modules[v2] = modules[slot]; modules[slot] = temp_module; // now swap the implement lists (we dont // need to swap the global or recount it) for (int n = 0; n < 255; n++) { char x = Config->implement_lists[v2][n]; Config->implement_lists[v2][n] = Config->implement_lists[slot][n]; Config->implement_lists[slot][n] = x; } } else { this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str()); } } void InspIRCd::MoveAfter(std::string modulename, std::string after) { for (unsigned int v = 0; v < Config->module_names.size(); v++) { if (Config->module_names[v] == after) { MoveTo(modulename, v); return; } } } void InspIRCd::MoveBefore(std::string modulename, std::string before) { for (unsigned int v = 0; v < Config->module_names.size(); v++) { if (Config->module_names[v] == before) { if (v > 0) { MoveTo(modulename, v-1); } else { MoveTo(modulename, v); } return; } } } void InspIRCd::MoveToFirst(std::string modulename) { MoveTo(modulename,0); } void InspIRCd::MoveToLast(std::string modulename) { MoveTo(modulename,this->GetModuleCount()); } void InspIRCd::BuildISupport() { // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it... std::stringstream v; v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=(ohv)@%+ MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1; v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN="; v << MAXAWAY << " CHANMODES=b,k,l,psmnti FNC NETWORK=" << Config->Network << " MAXPARA=32"; Config->data005 = v.str(); FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005)); } bool InspIRCd::UnloadModule(const char* filename) { std::string filename_str = filename; for (unsigned int j = 0; j != Config->module_names.size(); j++) { if (Config->module_names[j] == filename_str) { if (modules[j]->GetVersion().Flags & VF_STATIC) { this->Log(DEFAULT,"Failed to unload STATIC module %s",filename); snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)"); return false; } /* Give the module a chance to tidy out all its metadata */ for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++) { modules[j]->OnCleanup(TYPE_CHANNEL,c->second); } for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++) { modules[j]->OnCleanup(TYPE_USER,u->second); } FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j])); for(int t = 0; t < 255; t++) { Config->global_implementation[t] -= Config->implement_lists[j][t]; } /* We have to renumber implement_lists after unload because the module numbers change! */ for(int j2 = j; j2 < 254; j2++) { for(int t = 0; t < 255; t++) { Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t]; } } // found the module this->Log(DEBUG,"Removing dependent commands..."); Parser->RemoveCommands(filename); this->Log(DEBUG,"Deleting module..."); this->EraseModule(j); this->Log(DEBUG,"Erasing module entry..."); this->EraseFactory(j); this->Log(DEFAULT,"Module %s unloaded",filename); this->ModCount--; BuildISupport(); return true; } } this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename); snprintf(MODERR,MAXBUF,"Module not loaded"); return false; } bool InspIRCd::LoadModule(const char* filename) { char modfile[MAXBUF]; #ifdef STATIC_LINK strlcpy(modfile,filename,MAXBUF); #else snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename); #endif std::string filename_str = filename; #ifndef STATIC_LINK #ifndef IS_CYGWIN if (!ServerConfig::DirValid(modfile)) { this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile); snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile); return false; } #endif #endif this->Log(DEBUG,"Loading module: %s",modfile); #ifndef STATIC_LINK if (ServerConfig::FileExists(modfile)) { #endif for (unsigned int j = 0; j < Config->module_names.size(); j++) { if (Config->module_names[j] == filename_str) { this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile); snprintf(MODERR,MAXBUF,"Module already loaded"); return false; } } try { ircd_module* a = new ircd_module(this, modfile); factory[this->ModCount+1] = a; if (factory[this->ModCount+1]->LastError()) { this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError()); snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError()); return false; } if ((long)factory[this->ModCount+1]->factory != -1) { Module* m = factory[this->ModCount+1]->factory->CreateModule(this); modules[this->ModCount+1] = m; /* save the module and the module's classfactory, if * this isnt done, random crashes can occur :/ */ Config->module_names.push_back(filename); char* x = &Config->implement_lists[this->ModCount+1][0]; for(int t = 0; t < 255; t++) x[t] = 0; modules[this->ModCount+1]->Implements(x); for(int t = 0; t < 255; t++) Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t]; } else { this->Log(DEFAULT,"Unable to load %s",modfile); snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint."); return false; } } catch (ModuleException& modexcept) { this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason()); snprintf(MODERR,MAXBUF,"Factory function threw an exception: %s",modexcept.GetReason()); return false; } #ifndef STATIC_LINK } else { this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile); snprintf(MODERR,MAXBUF,"Module file could not be found"); return false; } #endif this->ModCount++; FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str)); // now work out which modules, if any, want to move to the back of the queue, // and if they do, move them there. std::vector put_to_back; std::vector put_to_front; std::map put_before; std::map put_after; for (unsigned int j = 0; j < Config->module_names.size(); j++) { if (modules[j]->Prioritize() == PRIORITY_LAST) put_to_back.push_back(Config->module_names[j]); else if (modules[j]->Prioritize() == PRIORITY_FIRST) put_to_front.push_back(Config->module_names[j]); else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE) put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8]; else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER) put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8]; } for (unsigned int j = 0; j < put_to_back.size(); j++) MoveToLast(put_to_back[j]); for (unsigned int j = 0; j < put_to_front.size(); j++) MoveToFirst(put_to_front[j]); for (std::map::iterator j = put_before.begin(); j != put_before.end(); j++) MoveBefore(j->first,j->second); for (std::map::iterator j = put_after.begin(); j != put_after.end(); j++) MoveAfter(j->first,j->second); BuildISupport(); return true; } void InspIRCd::DoOneIteration(bool process_module_sockets) { /* time() seems to be a pretty expensive syscall, so avoid calling it too much. * Once per loop iteration is pleanty. */ OLDTIME = TIME; TIME = time(NULL); /* Run background module timers every few seconds * (the docs say modules shouldnt rely on accurate * timing using this event, so we dont have to * time this exactly). */ if (TIME != OLDTIME) { if (TIME < OLDTIME) WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME)); if ((TIME % 3600) == 0) { irc::whowas::MaintainWhoWas(TIME); } Timers->TickTimers(TIME); if (process_module_sockets) this->DoSocketTimeouts(TIME); this->DoBackgroundUserStuff(TIME); if ((TIME % 5) == 0) { XLines->expire_lines(); FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME)); Timers->TickMissedTimers(TIME); } } /* Call the socket engine to wait on the active * file descriptors. The socket engine has everything's * descriptors in its list... dns, modules, users, * servers... so its nice and easy, just one call. * This will cause any read or write events to be * dispatched to their handlers. */ SE->DispatchEvents(); } bool InspIRCd::IsIdent(const char* n) { if (!n || !*n) return false; for (char* i = (char*)n; *i; i++) { if ((*i >= 'A') && (*i <= '}')) { continue; } if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.')) { continue; } return false; } return true; } bool InspIRCd::IsNick(const char* n) { if (!n || !*n) return false; int p = 0; for (char* i = (char*)n; *i; i++, p++) { /* "A"-"}" can occur anywhere in a nickname */ if ((*i >= 'A') && (*i <= '}')) { continue; } /* "0"-"9", "-" can occur anywhere BUT the first char of a nickname */ if ((((*i >= '0') && (*i <= '9')) || (*i == '-')) && (i > n)) { continue; } /* invalid character! abort */ return false; } return (p < NICKMAX - 1); } int InspIRCd::Run() { while (true) { DoOneIteration(true); } /* This is never reached -- we hope! */ return 0; } /**********************************************************************************/ /** * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*. */ int main(int argc, char** argv) { SI = new InspIRCd(argc, argv); SI->Run(); delete SI; return 0; } /* this returns true when all modules are satisfied that the user should be allowed onto the irc server * (until this returns true, a user will block in the waiting state, waiting to connect up to the * registration timeout maximum seconds) */ bool InspIRCd::AllModulesReportReady(userrec* user) { if (!Config->global_implementation[I_OnCheckReady]) return true; for (int i = 0; i <= this->GetModuleCount(); i++) { if (Config->implement_lists[i][I_OnCheckReady]) { int res = modules[i]->OnCheckReady(user); if (!res) return false; } } return true; } int InspIRCd::GetModuleCount() { return this->ModCount; } time_t InspIRCd::Time() { return TIME; }