src/inspircd.cpp

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