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