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::string fname = (filename.empty() ? "inspircd.pid" : filename);
 152         if (*(fname.begin()) != '/')
 153         {
 154                 std::string::size_type pos;
 155                 std::string confpath = CONFIG_FILE;
 156                 if ((pos = confpath.find("/inspircd.conf")) != std::string::npos)
 157                 {
 158                         /* Leaves us with just the path */
 159                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 160                 }
 161         }
 162         std::ofstream outfile(fname.c_str());
 163         if (outfile.is_open())
 164         {
 165                 outfile << getpid();
 166                 outfile.close();
 167         }
 168         else
 169         {
 170                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 171                 this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 172                 Exit(0);
 173         }
 174 }
 175
 176 std::string InspIRCd::GetRevision()
 177 {
 178         return REVISION;
 179 }
 180
 181 InspIRCd::InspIRCd(int argc, char** argv)
 182         : 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)
 183 {
 184         modules.resize(255);
 185         factory.resize(255);
 186
 187         this->Config = new ServerConfig(this);
 188         this->Config->opertypes.clear();
 189         this->Config->operclass.clear();
 190         this->SNO = new SnomaskManager(this);
 191         this->Start();
 192         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 193         srand(this->TIME);
 194         this->Log(DEBUG,"*** InspIRCd starting up!");
 195         if (!ServerConfig::FileExists(CONFIG_FILE))
 196         {
 197                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 198                 this->Log(DEFAULT,"main: no config");
 199                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 200                 Exit(ERROR);
 201         }
 202         *this->LogFileName = 0;
 203         if (argc > 1) {
 204                 for (int i = 1; i < argc; i++)
 205                 {
 206                         if (!strcmp(argv[i],"-nofork"))
 207                         {
 208                                 Config->nofork = true;
 209                         }
 210                         else if(!strcmp(argv[i],"-debug"))
 211                         {
 212                                 Config->forcedebug = true;
 213                         }
 214                         else if(!strcmp(argv[i],"-nolog"))
 215                         {
 216                                 Config->writelog = false;
 217                         }
 218                         else if (!strcmp(argv[i],"-wait"))
 219                         {
 220                                 sleep(6);
 221                         }
 222                         else if (!strcmp(argv[i],"-logfile"))
 223                         {
 224                                 if (argc > i+1)
 225                                 {
 226                                         strlcpy(LogFileName,argv[i+1],MAXBUF);
 227                                         printf("LOG: Setting logfile to %s\n",LogFileName);
 228                                 }
 229                                 else
 230                                 {
 231                                         printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
 232                                         Exit(ERROR);
 233                                 }
 234                                 i++;
 235                         }
 236                         else
 237                         {
 238                                 printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-logfile <filename>]\n",argv[0]);
 239                                 Exit(ERROR);
 240                         }
 241                 }
 242         }
 243
 244         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 245
 246         this->OpenLog(argv, argc);
 247         this->stats = new serverstats();
 248         this->Parser = new CommandParser(this);
 249         this->Timers = new TimerManager();
 250         this->XLines = new XLineManager(this);
 251         Config->ClearStack();
 252         Config->Read(true, NULL);
 253         this->CheckRoot();
 254         this->Modes = new ModeParser(this);
 255         this->AddServerName(Config->ServerName);
 256         CheckDie();
 257         InitializeDisabledCommands(Config->DisabledCommands, this);
 258         stats->BoundPortCount = BindPorts(true);
 259
 260         for(int t = 0; t < 255; t++)
 261                 Config->global_implementation[t] = 0;
 262
 263         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 264
 265         printf("\n");
 266         this->SetSignals();
 267         if (!Config->nofork)
 268         {
 269                 if (!this->DaemonSeed())
 270                 {
 271                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 272                         Exit(ERROR);
 273                 }
 274         }
 275
 276         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 277          * initialize the socket engine.
 278          */
 279         SocketEngineFactory* SEF = new SocketEngineFactory();
 280         SE = SEF->Create(this);
 281         delete SEF;
 282
 283         this->Res = new DNS(this);
 284
 285         this->LoadAllModules();
 286         /* Just in case no modules were loaded - fix for bug #101 */
 287         this->BuildISupport();
 288
 289         if (!stats->BoundPortCount)
 290         {
 291                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 292                 Exit(ERROR);
 293         }
 294
 295         /* Add the listening sockets used for client inbound connections
 296          * to the socket engine
 297          */
 298         this->Log(DEBUG,"%d listeners",stats->BoundPortCount);
 299         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 300         {
 301                 this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]->GetFd());
 302                 if (!SE->AddFd(Config->openSockfd[count]))
 303                 {
 304                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 305                         Exit(ERROR);
 306                 }
 307         }
 308
 309         if (!Config->nofork)
 310         {
 311                 if (kill(getppid(), SIGTERM) == -1)
 312                         printf("Error killing parent process: %s\n",strerror(errno));
 313                 fclose(stdin);
 314                 fclose(stderr);
 315                 fclose(stdout);
 316         }
 317
 318         printf("\nInspIRCd is now running!\n");
 319
 320         this->WritePID(Config->PID);
 321 }
 322
 323 std::string InspIRCd::GetVersionString()
 324 {
 325         char versiondata[MAXBUF];
 326         char dnsengine[] = "singlethread-object";
 327         if (*Config->CustomVersion)
 328         {
 329                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 330         }
 331         else
 332         {
 333                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 334         }
 335         return versiondata;
 336 }
 337
 338 char* InspIRCd::ModuleError()
 339 {
 340         return MODERR;
 341 }
 342
 343 void InspIRCd::EraseFactory(int j)
 344 {
 345         int v = 0;
 346         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 347         {
 348                 if (v == j)
 349                 {
 350                         delete *t;
 351                         factory.erase(t);
 352                         factory.push_back(NULL);
 353                         return;
 354                 }
 355                 v++;
 356         }
 357 }
 358
 359 void InspIRCd::EraseModule(int j)
 360 {
 361         int v1 = 0;
 362         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 363         {
 364                 if (v1 == j)
 365                 {
 366                         DELETE(*m);
 367                         modules.erase(m);
 368                         modules.push_back(NULL);
 369                         break;
 370                 }
 371                 v1++;
 372         }
 373         int v2 = 0;
 374         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 375         {
 376                 if (v2 == j)
 377                 {
 378                        Config->module_names.erase(v);
 379                        break;
 380                 }
 381                 v2++;
 382         }
 383
 384 }
 385
 386 void InspIRCd::MoveTo(std::string modulename,int slot)
 387 {
 388         unsigned int v2 = 256;
 389         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 390         {
 391                 if (Config->module_names[v] == modulename)
 392                 {
 393                         // found an instance, swap it with the item at the end
 394                         v2 = v;
 395                         break;
 396                 }
 397         }
 398         if ((v2 != (unsigned int)slot) && (v2 < 256))
 399         {
 400                 // Swap the module names over
 401                 Config->module_names[v2] = Config->module_names[slot];
 402                 Config->module_names[slot] = modulename;
 403                 // now swap the module factories
 404                 ircd_module* temp = factory[v2];
 405                 factory[v2] = factory[slot];
 406                 factory[slot] = temp;
 407                 // now swap the module objects
 408                 Module* temp_module = modules[v2];
 409                 modules[v2] = modules[slot];
 410                 modules[slot] = temp_module;
 411                 // now swap the implement lists (we dont
 412                 // need to swap the global or recount it)
 413                 for (int n = 0; n < 255; n++)
 414                 {
 415                         char x = Config->implement_lists[v2][n];
 416                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 417                         Config->implement_lists[slot][n] = x;
 418                 }
 419         }
 420         else
 421         {
 422                 this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 423         }
 424 }
 425
 426 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 427 {
 428         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 429         {
 430                 if (Config->module_names[v] == after)
 431                 {
 432                         MoveTo(modulename, v);
 433                         return;
 434                 }
 435         }
 436 }
 437
 438 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 439 {
 440         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 441         {
 442                 if (Config->module_names[v] == before)
 443                 {
 444                         if (v > 0)
 445                         {
 446                                 MoveTo(modulename, v-1);
 447                         }
 448                         else
 449                         {
 450                                 MoveTo(modulename, v);
 451                         }
 452                         return;
 453                 }
 454         }
 455 }
 456
 457 void InspIRCd::MoveToFirst(std::string modulename)
 458 {
 459         MoveTo(modulename,0);
 460 }
 461
 462 void InspIRCd::MoveToLast(std::string modulename)
 463 {
 464         MoveTo(modulename,this->GetModuleCount());
 465 }
 466
 467 void InspIRCd::BuildISupport()
 468 {
 469         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 470         std::stringstream v;
 471         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 472         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 473         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 474         Config->data005 = v.str();
 475         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 476 }
 477
 478 bool InspIRCd::UnloadModule(const char* filename)
 479 {
 480         std::string filename_str = filename;
 481         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 482         {
 483                 if (Config->module_names[j] == filename_str)
 484                 {
 485                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 486                         {
 487                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 488                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 489                                 return false;
 490                         }
 491                         /* Give the module a chance to tidy out all its metadata */
 492                         for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++)
 493                         {
 494                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 495                         }
 496                         for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++)
 497                         {
 498                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 499                         }
 500
 501                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 502
 503                         for(int t = 0; t < 255; t++)
 504                         {
 505                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 506                         }
 507
 508                         /* We have to renumber implement_lists after unload because the module numbers change!
 509                          */
 510                         for(int j2 = j; j2 < 254; j2++)
 511                         {
 512                                 for(int t = 0; t < 255; t++)
 513                                 {
 514                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 515                                 }
 516                         }
 517
 518                         // found the module
 519                         this->Log(DEBUG,"Removing dependent commands...");
 520                         Parser->RemoveCommands(filename);
 521                         this->Log(DEBUG,"Deleting module...");
 522                         this->EraseModule(j);
 523                         this->Log(DEBUG,"Erasing module entry...");
 524                         this->EraseFactory(j);
 525                         this->Log(DEFAULT,"Module %s unloaded",filename);
 526                         this->ModCount--;
 527                         BuildISupport();
 528                         return true;
 529                 }
 530         }
 531         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 532         snprintf(MODERR,MAXBUF,"Module not loaded");
 533         return false;
 534 }
 535
 536 bool InspIRCd::LoadModule(const char* filename)
 537 {
 538         char modfile[MAXBUF];
 539 #ifdef STATIC_LINK
 540         strlcpy(modfile,filename,MAXBUF);
 541 #else
 542         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 543 #endif
 544         std::string filename_str = filename;
 545 #ifndef STATIC_LINK
 546 #ifndef IS_CYGWIN
 547         if (!ServerConfig::DirValid(modfile))
 548         {
 549                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 550                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 551                 return false;
 552         }
 553 #endif
 554 #endif
 555         this->Log(DEBUG,"Loading module: %s",modfile);
 556 #ifndef STATIC_LINK
 557         if (ServerConfig::FileExists(modfile))
 558         {
 559 #endif
 560                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 561                 {
 562                         if (Config->module_names[j] == filename_str)
 563                         {
 564                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 565                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 566                                 return false;
 567                         }
 568                 }
 569                 try
 570                 {
 571                         ircd_module* a = new ircd_module(this, modfile);
 572                         factory[this->ModCount+1] = a;
 573                         if (factory[this->ModCount+1]->LastError())
 574                         {
 575                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 576                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 577                                 return false;
 578                         }
 579                         if ((long)factory[this->ModCount+1]->factory != -1)
 580                         {
 581                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 582
 583                                 Version v = m->GetVersion();
 584
 585                                 if (v.API != API_VERSION)
 586                                 {
 587                                         delete m;
 588                                         delete a;
 589                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 590                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 591                                         return false;
 592                                 }
 593                                 else
 594                                 {
 595                                         this->Log(DEFAULT,"New module introduced: %s (API version %d, Module version %d.%d.%d.%d)%s", filename, v.API, v.Major, v.Minor, v.Revision, v.Build, (!(v.Flags & VF_VENDOR) ? " [3rd Party]" : " [Vendor]"));
 596                                 }
 597
 598                                 modules[this->ModCount+1] = m;
 599                                 /* save the module and the module's classfactory, if
 600                                  * this isnt done, random crashes can occur :/ */
 601                                 Config->module_names.push_back(filename);
 602
 603                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 604                                 for(int t = 0; t < 255; t++)
 605                                         x[t] = 0;
 606
 607                                 modules[this->ModCount+1]->Implements(x);
 608
 609                                 for(int t = 0; t < 255; t++)
 610                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 611                         }
 612                         else
 613                         {
 614                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 615                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 616                                 return false;
 617                         }
 618                 }
 619                 catch (ModuleException& modexcept)
 620                 {
 621                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 622                         snprintf(MODERR,MAXBUF,"Factory function threw an exception: %s",modexcept.GetReason());
 623                         return false;
 624                 }
 625 #ifndef STATIC_LINK
 626         }
 627         else
 628         {
 629                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 630                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 631                 return false;
 632         }
 633 #endif
 634         this->ModCount++;
 635         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 636         // now work out which modules, if any, want to move to the back of the queue,
 637         // and if they do, move them there.
 638         std::vector<std::string> put_to_back;
 639         std::vector<std::string> put_to_front;
 640         std::map<std::string,std::string> put_before;
 641         std::map<std::string,std::string> put_after;
 642         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 643         {
 644                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 645                         put_to_back.push_back(Config->module_names[j]);
 646                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 647                         put_to_front.push_back(Config->module_names[j]);
 648                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 649                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 650                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 651                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 652         }
 653         for (unsigned int j = 0; j < put_to_back.size(); j++)
 654                 MoveToLast(put_to_back[j]);
 655         for (unsigned int j = 0; j < put_to_front.size(); j++)
 656                 MoveToFirst(put_to_front[j]);
 657         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 658                 MoveBefore(j->first,j->second);
 659         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 660                 MoveAfter(j->first,j->second);
 661         BuildISupport();
 662         return true;
 663 }
 664
 665 void InspIRCd::DoOneIteration(bool process_module_sockets)
 666 {
 667         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 668          * Once per loop iteration is pleanty.
 669          */
 670         OLDTIME = TIME;
 671         TIME = time(NULL);
 672
 673         /* Run background module timers every few seconds
 674          * (the docs say modules shouldnt rely on accurate
 675          * timing using this event, so we dont have to
 676          * time this exactly).
 677          */
 678         if (TIME != OLDTIME)
 679         {
 680                 if (TIME < OLDTIME)
 681                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 682                 if ((TIME % 3600) == 0)
 683                 {
 684                         irc::whowas::MaintainWhoWas(this, TIME);
 685                 }
 686                 Timers->TickTimers(TIME);
 687                 this->DoBackgroundUserStuff(TIME);
 688
 689                 if ((TIME % 5) == 0)
 690                 {
 691                         XLines->expire_lines();
 692                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 693                         Timers->TickMissedTimers(TIME);
 694                 }
 695         }
 696
 697         /* Call the socket engine to wait on the active
 698          * file descriptors. The socket engine has everything's
 699          * descriptors in its list... dns, modules, users,
 700          * servers... so its nice and easy, just one call.
 701          * This will cause any read or write events to be
 702          * dispatched to their handlers.
 703          */
 704         SE->DispatchEvents();
 705 }
 706
 707 bool InspIRCd::IsIdent(const char* n)
 708 {
 709         if (!n || !*n)
 710                 return false;
 711
 712         for (char* i = (char*)n; *i; i++)
 713         {
 714                 if ((*i >= 'A') && (*i <= '}'))
 715                 {
 716                         continue;
 717                 }
 718                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 719                 {
 720                         continue;
 721                 }
 722                 return false;
 723         }
 724         return true;
 725 }
 726
 727
 728 int InspIRCd::Run()
 729 {
 730         while (true)
 731         {
 732                 DoOneIteration(true);
 733         }
 734         /* This is never reached -- we hope! */
 735         return 0;
 736 }
 737
 738 /**********************************************************************************/
 739
 740 /**
 741  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 742  */
 743
 744 int main(int argc, char** argv)
 745 {
 746         SI = new InspIRCd(argc, argv);
 747         SI->Run();
 748         delete SI;
 749         return 0;
 750 }
 751
 752 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 753  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 754  * registration timeout maximum seconds)
 755  */
 756 bool InspIRCd::AllModulesReportReady(userrec* user)
 757 {
 758         if (!Config->global_implementation[I_OnCheckReady])
 759                 return true;
 760
 761         for (int i = 0; i <= this->GetModuleCount(); i++)
 762         {
 763                 if (Config->implement_lists[i][I_OnCheckReady])
 764                 {
 765                         int res = modules[i]->OnCheckReady(user);
 766                         if (!res)
 767                                 return false;
 768                 }
 769         }
 770         return true;
 771 }
 772
 773 int InspIRCd::GetModuleCount()
 774 {
 775         return this->ModCount;
 776 }
 777
 778 time_t InspIRCd::Time()
 779 {
 780         return TIME;
 781 }
 782
 783 bool FileLogger::Readable()
 784 {
 785         return false;
 786 }
 787
 788 void FileLogger::HandleEvent(EventType et)
 789 {
 790         this->WriteLogLine("");
 791         ServerInstance->SE->DelFd(this);
 792 }
 793
 794 void FileLogger::WriteLogLine(const std::string &line)
 795 {
 796         if (line.length())
 797                 buffer.append(line);
 798
 799         if (log)
 800         {
 801                 int written = fprintf(log,"%s",buffer.c_str());
 802                 if ((written >= 0) && (written < (int)buffer.length()))
 803                 {
 804                         buffer.erase(0, buffer.length());
 805                         ServerInstance->SE->AddFd(this);
 806                 }
 807                 else if (written == -1)
 808                 {
 809                         if (errno == EAGAIN)
 810                                 ServerInstance->SE->AddFd(this);
 811                 }
 812                 else
 813                 {
 814                         /* Wrote the whole buffer, and no need for write callback */
 815                         buffer = "";
 816                 }
 817         }
 818         if (writeops++ % 20)
 819         {
 820                 fflush(log);
 821         }
 822 }
 823
 824 void FileLogger::Close()
 825 {
 826         if (log)
 827         {
 828                 int flags = fcntl(fileno(log), F_GETFL, 0);
 829                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
 830                 if (buffer.size())
 831                         fprintf(log,"%s",buffer.c_str());
 832                 fflush(log);
 833                 fclose(log);
 834         }
 835         buffer = "";
 836         ServerInstance->SE->DelFd(this);
 837 }
 838
 839 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
 840 {
 841         irc::sockets::NonBlocking(fileno(log));
 842         this->SetFd(fileno(log));
 843         buffer = "";
 844 }
 845
 846 FileLogger::~FileLogger()
 847 {
 848         this->Close();
 849 }
 850