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