src/inspircd.cpp

   1 /* ---------------------------------------------------------------------
   2  *
   3  *            +------------------------------------+
   4  *            | Inspire Internet Relay Chat Daemon |
   5  *            +------------------------------------+
   6  *
   7  *       InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   8  *                           E-mail:
   9  *                    <brain@chatspike.net>
  10  *                    <Craig@chatspike.net>
  11  *
  12  *  Written by Craig Edwards, Craig McLure, and others.
  13  *  This program is free but copyrighted software; you can redistribute
  14  *  it and/or modify it under the terms of the GNU General Public
  15  *  License as published by the Free Software Foundation, version 2
  16  *  (two) ONLY.
  17  *
  18  *  This program is distributed in the hope that it will be useful,
  19  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *  GNU General Public License for more details.
  22  *
  23  *  You should have received a copy of the GNU General Public License
  24  *  along with this program; if not, write to the Free Software
  25  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26  *
  27  * ---------------------------------------------------------------------
  28  */
  29
  30 #include "inspircd.h"
  31 #include "configreader.h"
  32 #include <signal.h>
  33 #include <time.h>
  34 #include <string>
  35 #include <exception>
  36 #include <stdexcept>
  37 #include <new>
  38 #include <map>
  39 #include <sstream>
  40 #include <fstream>
  41 #include <vector>
  42 #include <deque>
  43 #include "modules.h"
  44 #include "mode.h"
  45 #include "xline.h"
  46 #include "socketengine.h"
  47 #include "inspircd_se_config.h"
  48 #include "socket.h"
  49 #include "typedefs.h"
  50 #include "command_parse.h"
  51
  52 using irc::sockets::NonBlocking;
  53 using irc::sockets::Blocking;
  54 using irc::sockets::insp_ntoa;
  55 using irc::sockets::insp_inaddr;
  56 using irc::sockets::insp_sockaddr;
  57
  58 InspIRCd* SI = NULL;
  59
  60 void InspIRCd::AddServerName(const std::string &servername)
  61 {
  62         this->Log(DEBUG,"Adding server name: %s",servername.c_str());
  63
  64         if(find(servernames.begin(), servernames.end(), servername) == servernames.end())
  65                 servernames.push_back(servername); /* Wasn't already there. */
  66 }
  67
  68 const char* InspIRCd::FindServerNamePtr(const std::string &servername)
  69 {
  70         servernamelist::iterator iter = find(servernames.begin(), servernames.end(), servername);
  71
  72         if(iter == servernames.end())
  73         {
  74                 AddServerName(servername);
  75                 iter = --servernames.end();
  76         }
  77
  78         return iter->c_str();
  79 }
  80
  81 bool InspIRCd::FindServerName(const std::string &servername)
  82 {
  83         return (find(servernames.begin(), servernames.end(), servername) != servernames.end());
  84 }
  85
  86 void InspIRCd::Exit(int status)
  87 {
  88         exit (status);
  89 }
  90
  91 void InspIRCd::Start()
  92 {
  93         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
  94         printf("(C) ChatSpike Development team.\033[0m\n\n");
  95         printf("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special\033[0m\n");
  96         printf("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
  97         printf("Name concept:\t\t\033[1;32mLord_Zathras\033[0m\n\n");
  98 }
  99
 100 void InspIRCd::Rehash(int status)
 101 {
 102         SI->WriteOpers("Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(CONFIG_FILE));
 103         fclose(SI->Config->log_file);
 104         SI->OpenLog(NULL,0);
 105         SI->Config->Read(false,NULL);
 106         FOREACH_MOD_I(SI,I_OnRehash,OnRehash(""));
 107 }
 108
 109 void InspIRCd::SetSignals(bool SEGVHandler)
 110 {
 111         signal(SIGALRM, SIG_IGN);
 112         signal(SIGHUP, InspIRCd::Rehash);
 113         signal(SIGPIPE, SIG_IGN);
 114         signal(SIGTERM, InspIRCd::Exit);
 115         signal(SIGCHLD, SIG_IGN);
 116 }
 117
 118 bool InspIRCd::DaemonSeed()
 119 {
 120         int childpid;
 121         if ((childpid = fork ()) < 0)
 122                 return false;
 123         else if (childpid > 0)
 124         {
 125                 /* We wait here for the child process to kill us,
 126                  * so that the shell prompt doesnt come back over
 127                  * the output.
 128                  * Sending a kill with a signal of 0 just checks
 129                  * if the child pid is still around. If theyre not,
 130                  * they threw an error and we should give up.
 131                  */
 132                 while (kill(childpid, 0) != -1)
 133                         sleep(1);
 134                 exit(ERROR);
 135         }
 136         setsid ();
 137         umask (007);
 138         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 139
 140         rlimit rl;
 141         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 142         {
 143                 this->Log(DEFAULT,"Failed to getrlimit()!");
 144                 return false;
 145         }
 146         else
 147         {
 148                 rl.rlim_cur = rl.rlim_max;
 149                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 150                         this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 151         }
 152
 153         return true;
 154 }
 155
 156 void InspIRCd::WritePID(const std::string &filename)
 157 {
 158         std::ofstream outfile(filename.c_str());
 159         if (outfile.is_open())
 160         {
 161                 outfile << getpid();
 162                 outfile.close();
 163         }
 164         else
 165         {
 166                 printf("Failed to write PID-file '%s', exiting.\n",filename.c_str());
 167                 this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",filename.c_str());
 168                 Exit(0);
 169         }
 170 }
 171
 172 std::string InspIRCd::GetRevision()
 173 {
 174         return REVISION;
 175 }
 176
 177 InspIRCd::InspIRCd(int argc, char** argv)
 178         : 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)
 179 {
 180         bool SEGVHandler = false;
 181
 182         modules.resize(255);
 183         factory.resize(255);
 184
 185         this->Config = new ServerConfig(this);
 186         this->Start();
 187         this->module_sockets.clear();
 188         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 189         srand(this->TIME);
 190         this->Log(DEBUG,"*** InspIRCd starting up!");
 191         if (!ServerConfig::FileExists(CONFIG_FILE))
 192         {
 193                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 194                 this->Log(DEFAULT,"main: no config");
 195                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 196                 Exit(ERROR);
 197         }
 198         *this->LogFileName = 0;
 199         if (argc > 1) {
 200                 for (int i = 1; i < argc; i++)
 201                 {
 202                         if (!strcmp(argv[i],"-nofork"))
 203                         {
 204                                 Config->nofork = true;
 205                         }
 206                         else if(!strcmp(argv[i],"-debug"))
 207                         {
 208                                 Config->forcedebug = true;
 209                         }
 210                         else if(!strcmp(argv[i],"-nolog"))
 211                         {
 212                                 Config->writelog = false;
 213                         }
 214                         else if (!strcmp(argv[i],"-wait"))
 215                         {
 216                                 sleep(6);
 217                         }
 218                         else if (!strcmp(argv[i],"-nolimit"))
 219                         {
 220                                 printf("WARNING: The `-nolimit' option is deprecated, and now on by default. This behaviour may change in the future.\n");
 221                         }
 222                         else if (!strcmp(argv[i],"-notraceback"))
 223                         {
 224                                 SEGVHandler = false;
 225                         }
 226                         else if (!strcmp(argv[i],"-logfile"))
 227                         {
 228                                 if (argc > i+1)
 229                                 {
 230                                         strlcpy(LogFileName,argv[i+1],MAXBUF);
 231                                         printf("LOG: Setting logfile to %s\n",LogFileName);
 232                                 }
 233                                 else
 234                                 {
 235                                         printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
 236                                         Exit(ERROR);
 237                                 }
 238                                 i++;
 239                         }
 240                         else
 241                         {
 242                                 printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-nolimit] [-notraceback] [-logfile <filename>]\n",argv[0]);
 243                                 Exit(ERROR);
 244                         }
 245                 }
 246         }
 247
 248         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 249
 250         this->OpenLog(argv, argc);
 251         this->stats = new serverstats();
 252         this->Parser = new CommandParser(this);
 253         this->Timers = new TimerManager();
 254         this->XLines = new XLineManager(this);
 255         Config->ClearStack();
 256         Config->Read(true, NULL);
 257         this->CheckRoot();
 258         this->Modes = new ModeParser(this);
 259         this->AddServerName(Config->ServerName);
 260         CheckDie();
 261         InitializeDisabledCommands(Config->DisabledCommands, this);
 262         stats->BoundPortCount = BindPorts(true);
 263
 264         for(int t = 0; t < 255; t++)
 265                 Config->global_implementation[t] = 0;
 266
 267         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 268
 269         printf("\n");
 270         this->SetSignals(SEGVHandler);
 271         if (!Config->nofork)
 272         {
 273                 if (!this->DaemonSeed())
 274                 {
 275                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 276                         Exit(ERROR);
 277                 }
 278         }
 279
 280         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 281          * initialize the socket engine.
 282          */
 283         SocketEngineFactory* SEF = new SocketEngineFactory();
 284         SE = SEF->Create(this);
 285         delete SEF;
 286
 287         this->Res = new DNS(this);
 288
 289         this->LoadAllModules();
 290         /* Just in case no modules were loaded - fix for bug #101 */
 291         this->BuildISupport();
 292
 293         if (!stats->BoundPortCount)
 294         {
 295                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 296                 Exit(ERROR);
 297         }
 298
 299         /* Add the listening sockets used for client inbound connections
 300          * to the socket engine
 301          */
 302         this->Log(DEBUG,"%d listeners",stats->BoundPortCount);
 303         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 304         {
 305                 this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]->GetFd());
 306                 if (!SE->AddFd(Config->openSockfd[count]))
 307                 {
 308                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 309                         Exit(ERROR);
 310                 }
 311         }
 312
 313         if (!Config->nofork)
 314         {
 315                 if (kill(getppid(), SIGTERM) == -1)
 316                         printf("Error killing parent process: %s\n",strerror(errno));
 317                 fclose(stdin);
 318                 fclose(stderr);
 319                 fclose(stdout);
 320         }
 321
 322         printf("\nInspIRCd is now running!\n");
 323
 324         this->WritePID(Config->PID);
 325 }
 326
 327 std::string InspIRCd::GetVersionString()
 328 {
 329         char versiondata[MAXBUF];
 330         char dnsengine[] = "singlethread-object";
 331         if (*Config->CustomVersion)
 332         {
 333                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 334         }
 335         else
 336         {
 337                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 338         }
 339         return versiondata;
 340 }
 341
 342 char* InspIRCd::ModuleError()
 343 {
 344         return MODERR;
 345 }
 346
 347 void InspIRCd::EraseFactory(int j)
 348 {
 349         int v = 0;
 350         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 351         {
 352                 if (v == j)
 353                 {
 354                         factory.erase(t);
 355                         factory.push_back(NULL);
 356                         return;
 357                 }
 358                 v++;
 359         }
 360 }
 361
 362 void InspIRCd::EraseModule(int j)
 363 {
 364         int v1 = 0;
 365         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 366         {
 367                 if (v1 == j)
 368                 {
 369                         DELETE(*m);
 370                         modules.erase(m);
 371                         modules.push_back(NULL);
 372                         break;
 373                 }
 374                 v1++;
 375         }
 376         int v2 = 0;
 377         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 378         {
 379                 if (v2 == j)
 380                 {
 381                        Config->module_names.erase(v);
 382                        break;
 383                 }
 384                 v2++;
 385         }
 386
 387 }
 388
 389 void InspIRCd::MoveTo(std::string modulename,int slot)
 390 {
 391         unsigned int v2 = 256;
 392         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 393         {
 394                 if (Config->module_names[v] == modulename)
 395                 {
 396                         // found an instance, swap it with the item at the end
 397                         v2 = v;
 398                         break;
 399                 }
 400         }
 401         if ((v2 != (unsigned int)slot) && (v2 < 256))
 402         {
 403                 // Swap the module names over
 404                 Config->module_names[v2] = Config->module_names[slot];
 405                 Config->module_names[slot] = modulename;
 406                 // now swap the module factories
 407                 ircd_module* temp = factory[v2];
 408                 factory[v2] = factory[slot];
 409                 factory[slot] = temp;
 410                 // now swap the module objects
 411                 Module* temp_module = modules[v2];
 412                 modules[v2] = modules[slot];
 413                 modules[slot] = temp_module;
 414                 // now swap the implement lists (we dont
 415                 // need to swap the global or recount it)
 416                 for (int n = 0; n < 255; n++)
 417                 {
 418                         char x = Config->implement_lists[v2][n];
 419                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 420                         Config->implement_lists[slot][n] = x;
 421                 }
 422         }
 423         else
 424         {
 425                 this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 426         }
 427 }
 428
 429 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 430 {
 431         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 432         {
 433                 if (Config->module_names[v] == after)
 434                 {
 435                         MoveTo(modulename, v);
 436                         return;
 437                 }
 438         }
 439 }
 440
 441 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 442 {
 443         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 444         {
 445                 if (Config->module_names[v] == before)
 446                 {
 447                         if (v > 0)
 448                         {
 449                                 MoveTo(modulename, v-1);
 450                         }
 451                         else
 452                         {
 453                                 MoveTo(modulename, v);
 454                         }
 455                         return;
 456                 }
 457         }
 458 }
 459
 460 void InspIRCd::MoveToFirst(std::string modulename)
 461 {
 462         MoveTo(modulename,0);
 463 }
 464
 465 void InspIRCd::MoveToLast(std::string modulename)
 466 {
 467         MoveTo(modulename,this->GetModuleCount());
 468 }
 469
 470 void InspIRCd::BuildISupport()
 471 {
 472         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 473         std::stringstream v;
 474         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 475         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 476         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 477         Config->data005 = v.str();
 478         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 479 }
 480
 481 bool InspIRCd::UnloadModule(const char* filename)
 482 {
 483         std::string filename_str = filename;
 484         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 485         {
 486                 if (Config->module_names[j] == filename_str)
 487                 {
 488                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 489                         {
 490                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 491                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 492                                 return false;
 493                         }
 494                         /* Give the module a chance to tidy out all its metadata */
 495                         for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++)
 496                         {
 497                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 498                         }
 499                         for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++)
 500                         {
 501                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 502                         }
 503
 504                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 505
 506                         for(int t = 0; t < 255; t++)
 507                         {
 508                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 509                         }
 510
 511                         /* We have to renumber implement_lists after unload because the module numbers change!
 512                          */
 513                         for(int j2 = j; j2 < 254; j2++)
 514                         {
 515                                 for(int t = 0; t < 255; t++)
 516                                 {
 517                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 518                                 }
 519                         }
 520
 521                         // found the module
 522                         this->Log(DEBUG,"Removing dependent commands...");
 523                         Parser->RemoveCommands(filename);
 524                         this->Log(DEBUG,"Deleting module...");
 525                         this->EraseModule(j);
 526                         this->Log(DEBUG,"Erasing module entry...");
 527                         this->EraseFactory(j);
 528                         this->Log(DEFAULT,"Module %s unloaded",filename);
 529                         this->ModCount--;
 530                         BuildISupport();
 531                         return true;
 532                 }
 533         }
 534         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 535         snprintf(MODERR,MAXBUF,"Module not loaded");
 536         return false;
 537 }
 538
 539 bool InspIRCd::LoadModule(const char* filename)
 540 {
 541         char modfile[MAXBUF];
 542 #ifdef STATIC_LINK
 543         strlcpy(modfile,filename,MAXBUF);
 544 #else
 545         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 546 #endif
 547         std::string filename_str = filename;
 548 #ifndef STATIC_LINK
 549 #ifndef IS_CYGWIN
 550         if (!ServerConfig::DirValid(modfile))
 551         {
 552                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 553                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 554                 return false;
 555         }
 556 #endif
 557 #endif
 558         this->Log(DEBUG,"Loading module: %s",modfile);
 559 #ifndef STATIC_LINK
 560         if (ServerConfig::FileExists(modfile))
 561         {
 562 #endif
 563                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 564                 {
 565                         if (Config->module_names[j] == filename_str)
 566                         {
 567                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 568                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 569                                 return false;
 570                         }
 571                 }
 572                 try
 573                 {
 574                         ircd_module* a = new ircd_module(this, modfile);
 575                         factory[this->ModCount+1] = a;
 576                         if (factory[this->ModCount+1]->LastError())
 577                         {
 578                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 579                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 580                                 return false;
 581                         }
 582                         if ((long)factory[this->ModCount+1]->factory != -1)
 583                         {
 584                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 585                                 modules[this->ModCount+1] = m;
 586                                 /* save the module and the module's classfactory, if
 587                                  * this isnt done, random crashes can occur :/ */
 588                                 Config->module_names.push_back(filename);
 589
 590                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 591                                 for(int t = 0; t < 255; t++)
 592                                         x[t] = 0;
 593
 594                                 modules[this->ModCount+1]->Implements(x);
 595
 596                                 for(int t = 0; t < 255; t++)
 597                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 598                         }
 599                         else
 600                         {
 601                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 602                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 603                                 return false;
 604                         }
 605                 }
 606                 catch (ModuleException& modexcept)
 607                 {
 608                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 609                         snprintf(MODERR,MAXBUF,"Factory function threw an exception: %s",modexcept.GetReason());
 610                         return false;
 611                 }
 612 #ifndef STATIC_LINK
 613         }
 614         else
 615         {
 616                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 617                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 618                 return false;
 619         }
 620 #endif
 621         this->ModCount++;
 622         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 623         // now work out which modules, if any, want to move to the back of the queue,
 624         // and if they do, move them there.
 625         std::vector<std::string> put_to_back;
 626         std::vector<std::string> put_to_front;
 627         std::map<std::string,std::string> put_before;
 628         std::map<std::string,std::string> put_after;
 629         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 630         {
 631                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 632                         put_to_back.push_back(Config->module_names[j]);
 633                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 634                         put_to_front.push_back(Config->module_names[j]);
 635                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 636                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 637                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 638                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 639         }
 640         for (unsigned int j = 0; j < put_to_back.size(); j++)
 641                 MoveToLast(put_to_back[j]);
 642         for (unsigned int j = 0; j < put_to_front.size(); j++)
 643                 MoveToFirst(put_to_front[j]);
 644         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 645                 MoveBefore(j->first,j->second);
 646         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 647                 MoveAfter(j->first,j->second);
 648         BuildISupport();
 649         return true;
 650 }
 651
 652 void InspIRCd::DoOneIteration(bool process_module_sockets)
 653 {
 654         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 655          * Once per loop iteration is pleanty.
 656          */
 657         OLDTIME = TIME;
 658         TIME = time(NULL);
 659
 660         /* Run background module timers every few seconds
 661          * (the docs say modules shouldnt rely on accurate
 662          * timing using this event, so we dont have to
 663          * time this exactly).
 664          */
 665         if (TIME != OLDTIME)
 666         {
 667                 if (TIME < OLDTIME)
 668                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 669                 if ((TIME % 3600) == 0)
 670                 {
 671                         irc::whowas::MaintainWhoWas(TIME);
 672                 }
 673                 Timers->TickTimers(TIME);
 674                 if (process_module_sockets)
 675                         this->DoSocketTimeouts(TIME);
 676                 this->DoBackgroundUserStuff(TIME);
 677
 678                 if ((TIME % 5) == 0)
 679                 {
 680                         XLines->expire_lines();
 681                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 682                         Timers->TickMissedTimers(TIME);
 683                 }
 684         }
 685
 686         /* Call the socket engine to wait on the active
 687          * file descriptors. The socket engine has everything's
 688          * descriptors in its list... dns, modules, users,
 689          * servers... so its nice and easy, just one call.
 690          * This will cause any read or write events to be
 691          * dispatched to their handlers.
 692          */
 693         SE->DispatchEvents();
 694 }
 695
 696 bool InspIRCd::IsIdent(const char* n)
 697 {
 698         if (!n || !*n)
 699                 return false;
 700
 701         for (char* i = (char*)n; *i; i++)
 702         {
 703                 if ((*i >= 'A') && (*i <= '}'))
 704                 {
 705                         continue;
 706                 }
 707                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 708                 {
 709                         continue;
 710                 }
 711                 return false;
 712         }
 713         return true;
 714 }
 715
 716
 717 bool InspIRCd::IsNick(const char* n)
 718 {
 719         if (!n || !*n)
 720                 return false;
 721
 722         int p = 0;
 723         for (char* i = (char*)n; *i; i++, p++)
 724         {
 725                 /* "A"-"}" can occur anywhere in a nickname */
 726                 if ((*i >= 'A') && (*i <= '}'))
 727                 {
 728                         continue;
 729                 }
 730                 /* "0"-"9", "-" can occur anywhere BUT the first char of a nickname */
 731                 if ((((*i >= '0') && (*i <= '9')) || (*i == '-')) && (i > n))
 732                 {
 733                         continue;
 734                 }
 735                 /* invalid character! abort */
 736                 return false;
 737         }
 738         return (p < NICKMAX - 1);
 739 }
 740
 741 int InspIRCd::Run()
 742 {
 743         while (true)
 744         {
 745                 DoOneIteration(true);
 746         }
 747         /* This is never reached -- we hope! */
 748         return 0;
 749 }
 750
 751 /**********************************************************************************/
 752
 753 /**
 754  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 755  */
 756
 757 int main(int argc, char** argv)
 758 {
 759         SI = new InspIRCd(argc, argv);
 760         SI->Run();
 761         delete SI;
 762         return 0;
 763 }
 764
 765 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 766  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 767  * registration timeout maximum seconds)
 768  */
 769 bool InspIRCd::AllModulesReportReady(userrec* user)
 770 {
 771         if (!Config->global_implementation[I_OnCheckReady])
 772                 return true;
 773
 774         for (int i = 0; i <= this->GetModuleCount(); i++)
 775         {
 776                 if (Config->implement_lists[i][I_OnCheckReady])
 777                 {
 778                         int res = modules[i]->OnCheckReady(user);
 779                         if (!res)
 780                                 return false;
 781                 }
 782         }
 783         return true;
 784 }
 785
 786 int InspIRCd::GetModuleCount()
 787 {
 788         return this->ModCount;
 789 }
 790
 791 time_t InspIRCd::Time()
 792 {
 793         return TIME;
 794 }
 795
 796 bool FileLogger::Readable()
 797 {
 798         return false;
 799 }
 800
 801 void FileLogger::HandleEvent(EventType et)
 802 {
 803         this->WriteLogLine("");
 804         ServerInstance->SE->DelFd(this);
 805 }
 806
 807 void FileLogger::WriteLogLine(const std::string &line)
 808 {
 809         if (line.length())
 810                 buffer.append(line);
 811
 812         if (log)
 813         {
 814                 int written = fprintf(log,"%s",buffer.c_str());
 815                 if ((written >= 0) && (written < (int)buffer.length()))
 816                 {
 817                         buffer.erase(0, buffer.length());
 818                         ServerInstance->SE->AddFd(this);
 819                 }
 820                 else if (written == -1)
 821                 {
 822                         if (errno == EAGAIN)
 823                                 ServerInstance->SE->AddFd(this);
 824                 }
 825                 else
 826                 {
 827                         /* Wrote the whole buffer, and no need for write callback */
 828                         buffer = "";
 829                 }
 830         }
 831         if (writeops++ % 20)
 832         {
 833                 fflush(log);
 834         }
 835 }
 836
 837 void FileLogger::Close()
 838 {
 839         if (log)
 840         {
 841                 int flags = fcntl(fileno(log), F_GETFL, 0);
 842                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
 843                 if (buffer.size())
 844                         fprintf(log,"%s",buffer.c_str());
 845                 fflush(log);
 846                 fclose(log);
 847         }
 848         buffer = "";
 849         ServerInstance->SE->DelFd(this);
 850 }
 851
 852 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
 853 {
 854         irc::sockets::NonBlocking(fileno(log));
 855         this->SetFd(fileno(log));
 856         buffer = "";
 857 }
 858
 859 FileLogger::~FileLogger()
 860 {
 861         this->Close();
 862 }
 863