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