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         this->next_call = this->TIME + 3;
 194         srand(this->TIME);
 195         this->Log(DEBUG,"*** InspIRCd starting up!");
 196         if (!ServerConfig::FileExists(CONFIG_FILE))
 197         {
 198                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 199                 this->Log(DEFAULT,"main: no config");
 200                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 201                 Exit(ERROR);
 202         }
 203         *this->LogFileName = 0;
 204         if (argc > 1) {
 205                 for (int i = 1; i < argc; i++)
 206                 {
 207                         if (!strcmp(argv[i],"-nofork"))
 208                         {
 209                                 Config->nofork = true;
 210                         }
 211                         else if(!strcmp(argv[i],"-debug"))
 212                         {
 213                                 Config->forcedebug = true;
 214                         }
 215                         else if(!strcmp(argv[i],"-nolog"))
 216                         {
 217                                 Config->writelog = false;
 218                         }
 219                         else if (!strcmp(argv[i],"-wait"))
 220                         {
 221                                 sleep(6);
 222                         }
 223                         else if (!strcmp(argv[i],"-logfile"))
 224                         {
 225                                 if (argc > i+1)
 226                                 {
 227                                         strlcpy(LogFileName,argv[i+1],MAXBUF);
 228                                         printf("LOG: Setting logfile to %s\n",LogFileName);
 229                                 }
 230                                 else
 231                                 {
 232                                         printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
 233                                         Exit(ERROR);
 234                                 }
 235                                 i++;
 236                         }
 237                         else
 238                         {
 239                                 printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-logfile <filename>]\n",argv[0]);
 240                                 Exit(ERROR);
 241                         }
 242                 }
 243         }
 244
 245         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 246
 247         this->OpenLog(argv, argc);
 248         this->stats = new serverstats();
 249         this->Parser = new CommandParser(this);
 250         this->Timers = new TimerManager();
 251         this->XLines = new XLineManager(this);
 252         Config->ClearStack();
 253         Config->Read(true, NULL);
 254         this->CheckRoot();
 255         this->Modes = new ModeParser(this);
 256         this->AddServerName(Config->ServerName);
 257         CheckDie();
 258         InitializeDisabledCommands(Config->DisabledCommands, this);
 259         stats->BoundPortCount = BindPorts(true);
 260
 261         for(int t = 0; t < 255; t++)
 262                 Config->global_implementation[t] = 0;
 263
 264         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 265
 266         printf("\n");
 267         this->SetSignals();
 268         if (!Config->nofork)
 269         {
 270                 if (!this->DaemonSeed())
 271                 {
 272                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 273                         Exit(ERROR);
 274                 }
 275         }
 276
 277         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 278          * initialize the socket engine.
 279          */
 280         SocketEngineFactory* SEF = new SocketEngineFactory();
 281         SE = SEF->Create(this);
 282         delete SEF;
 283
 284         this->Res = new DNS(this);
 285
 286         this->LoadAllModules();
 287         /* Just in case no modules were loaded - fix for bug #101 */
 288         this->BuildISupport();
 289
 290         if (!stats->BoundPortCount)
 291         {
 292                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 293                 Exit(ERROR);
 294         }
 295
 296         /* Add the listening sockets used for client inbound connections
 297          * to the socket engine
 298          */
 299         this->Log(DEBUG,"%d listeners",stats->BoundPortCount);
 300         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 301         {
 302                 this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]->GetFd());
 303                 if (!SE->AddFd(Config->openSockfd[count]))
 304                 {
 305                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 306                         Exit(ERROR);
 307                 }
 308         }
 309
 310         if (!Config->nofork)
 311         {
 312                 if (kill(getppid(), SIGTERM) == -1)
 313                         printf("Error killing parent process: %s\n",strerror(errno));
 314                 fclose(stdin);
 315                 fclose(stderr);
 316                 fclose(stdout);
 317         }
 318
 319         printf("\nInspIRCd is now running!\n");
 320
 321         this->WritePID(Config->PID);
 322 }
 323
 324 std::string InspIRCd::GetVersionString()
 325 {
 326         char versiondata[MAXBUF];
 327         char dnsengine[] = "singlethread-object";
 328         if (*Config->CustomVersion)
 329         {
 330                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 331         }
 332         else
 333         {
 334                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 335         }
 336         return versiondata;
 337 }
 338
 339 char* InspIRCd::ModuleError()
 340 {
 341         return MODERR;
 342 }
 343
 344 void InspIRCd::EraseFactory(int j)
 345 {
 346         int v = 0;
 347         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 348         {
 349                 if (v == j)
 350                 {
 351                         delete *t;
 352                         factory.erase(t);
 353                         factory.push_back(NULL);
 354                         return;
 355                 }
 356                 v++;
 357         }
 358 }
 359
 360 void InspIRCd::EraseModule(int j)
 361 {
 362         int v1 = 0;
 363         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 364         {
 365                 if (v1 == j)
 366                 {
 367                         DELETE(*m);
 368                         modules.erase(m);
 369                         modules.push_back(NULL);
 370                         break;
 371                 }
 372                 v1++;
 373         }
 374         int v2 = 0;
 375         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 376         {
 377                 if (v2 == j)
 378                 {
 379                        Config->module_names.erase(v);
 380                        break;
 381                 }
 382                 v2++;
 383         }
 384
 385 }
 386
 387 void InspIRCd::MoveTo(std::string modulename,int slot)
 388 {
 389         unsigned int v2 = 256;
 390         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 391         {
 392                 if (Config->module_names[v] == modulename)
 393                 {
 394                         // found an instance, swap it with the item at the end
 395                         v2 = v;
 396                         break;
 397                 }
 398         }
 399         if ((v2 != (unsigned int)slot) && (v2 < 256))
 400         {
 401                 // Swap the module names over
 402                 Config->module_names[v2] = Config->module_names[slot];
 403                 Config->module_names[slot] = modulename;
 404                 // now swap the module factories
 405                 ircd_module* temp = factory[v2];
 406                 factory[v2] = factory[slot];
 407                 factory[slot] = temp;
 408                 // now swap the module objects
 409                 Module* temp_module = modules[v2];
 410                 modules[v2] = modules[slot];
 411                 modules[slot] = temp_module;
 412                 // now swap the implement lists (we dont
 413                 // need to swap the global or recount it)
 414                 for (int n = 0; n < 255; n++)
 415                 {
 416                         char x = Config->implement_lists[v2][n];
 417                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 418                         Config->implement_lists[slot][n] = x;
 419                 }
 420         }
 421         else
 422         {
 423                 this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 424         }
 425 }
 426
 427 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 428 {
 429         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 430         {
 431                 if (Config->module_names[v] == after)
 432                 {
 433                         MoveTo(modulename, v);
 434                         return;
 435                 }
 436         }
 437 }
 438
 439 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 440 {
 441         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 442         {
 443                 if (Config->module_names[v] == before)
 444                 {
 445                         if (v > 0)
 446                         {
 447                                 MoveTo(modulename, v-1);
 448                         }
 449                         else
 450                         {
 451                                 MoveTo(modulename, v);
 452                         }
 453                         return;
 454                 }
 455         }
 456 }
 457
 458 void InspIRCd::MoveToFirst(std::string modulename)
 459 {
 460         MoveTo(modulename,0);
 461 }
 462
 463 void InspIRCd::MoveToLast(std::string modulename)
 464 {
 465         MoveTo(modulename,this->GetModuleCount());
 466 }
 467
 468 void InspIRCd::BuildISupport()
 469 {
 470         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 471         std::stringstream v;
 472         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 473         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 474         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 475         Config->data005 = v.str();
 476         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 477 }
 478
 479 bool InspIRCd::UnloadModule(const char* filename)
 480 {
 481         std::string filename_str = filename;
 482         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 483         {
 484                 if (Config->module_names[j] == filename_str)
 485                 {
 486                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 487                         {
 488                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 489                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 490                                 return false;
 491                         }
 492                         /* Give the module a chance to tidy out all its metadata */
 493                         for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++)
 494                         {
 495                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 496                         }
 497                         for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++)
 498                         {
 499                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 500                         }
 501
 502                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 503
 504                         for(int t = 0; t < 255; t++)
 505                         {
 506                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 507                         }
 508
 509                         /* We have to renumber implement_lists after unload because the module numbers change!
 510                          */
 511                         for(int j2 = j; j2 < 254; j2++)
 512                         {
 513                                 for(int t = 0; t < 255; t++)
 514                                 {
 515                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 516                                 }
 517                         }
 518
 519                         // found the module
 520                         this->Log(DEBUG,"Removing dependent commands...");
 521                         Parser->RemoveCommands(filename);
 522                         this->Log(DEBUG,"Deleting module...");
 523                         this->EraseModule(j);
 524                         this->Log(DEBUG,"Erasing module entry...");
 525                         this->EraseFactory(j);
 526                         this->Log(DEFAULT,"Module %s unloaded",filename);
 527                         this->ModCount--;
 528                         BuildISupport();
 529                         return true;
 530                 }
 531         }
 532         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 533         snprintf(MODERR,MAXBUF,"Module not loaded");
 534         return false;
 535 }
 536
 537 bool InspIRCd::LoadModule(const char* filename)
 538 {
 539         char modfile[MAXBUF];
 540 #ifdef STATIC_LINK
 541         strlcpy(modfile,filename,MAXBUF);
 542 #else
 543         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 544 #endif
 545         std::string filename_str = filename;
 546 #ifndef STATIC_LINK
 547 #ifndef IS_CYGWIN
 548         if (!ServerConfig::DirValid(modfile))
 549         {
 550                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 551                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 552                 return false;
 553         }
 554 #endif
 555 #endif
 556         this->Log(DEBUG,"Loading module: %s",modfile);
 557 #ifndef STATIC_LINK
 558         if (ServerConfig::FileExists(modfile))
 559         {
 560 #endif
 561                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 562                 {
 563                         if (Config->module_names[j] == filename_str)
 564                         {
 565                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 566                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 567                                 return false;
 568                         }
 569                 }
 570                 try
 571                 {
 572                         ircd_module* a = new ircd_module(this, modfile);
 573                         factory[this->ModCount+1] = a;
 574                         if (factory[this->ModCount+1]->LastError())
 575                         {
 576                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 577                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 578                                 return false;
 579                         }
 580                         if ((long)factory[this->ModCount+1]->factory != -1)
 581                         {
 582                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 583
 584                                 Version v = m->GetVersion();
 585
 586                                 if (v.API != API_VERSION)
 587                                 {
 588                                         delete m;
 589                                         delete a;
 590                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 591                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 592                                         return false;
 593                                 }
 594                                 else
 595                                 {
 596                                         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]"));
 597                                 }
 598
 599                                 modules[this->ModCount+1] = m;
 600                                 /* save the module and the module's classfactory, if
 601                                  * this isnt done, random crashes can occur :/ */
 602                                 Config->module_names.push_back(filename);
 603
 604                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 605                                 for(int t = 0; t < 255; t++)
 606                                         x[t] = 0;
 607
 608                                 modules[this->ModCount+1]->Implements(x);
 609
 610                                 for(int t = 0; t < 255; t++)
 611                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 612                         }
 613                         else
 614                         {
 615                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 616                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 617                                 return false;
 618                         }
 619                 }
 620                 catch (ModuleException& modexcept)
 621                 {
 622                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 623                         snprintf(MODERR,MAXBUF,"Factory function threw an exception: %s",modexcept.GetReason());
 624                         return false;
 625                 }
 626 #ifndef STATIC_LINK
 627         }
 628         else
 629         {
 630                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 631                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 632                 return false;
 633         }
 634 #endif
 635         this->ModCount++;
 636         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 637         // now work out which modules, if any, want to move to the back of the queue,
 638         // and if they do, move them there.
 639         std::vector<std::string> put_to_back;
 640         std::vector<std::string> put_to_front;
 641         std::map<std::string,std::string> put_before;
 642         std::map<std::string,std::string> put_after;
 643         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 644         {
 645                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 646                         put_to_back.push_back(Config->module_names[j]);
 647                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 648                         put_to_front.push_back(Config->module_names[j]);
 649                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 650                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 651                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 652                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 653         }
 654         for (unsigned int j = 0; j < put_to_back.size(); j++)
 655                 MoveToLast(put_to_back[j]);
 656         for (unsigned int j = 0; j < put_to_front.size(); j++)
 657                 MoveToFirst(put_to_front[j]);
 658         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 659                 MoveBefore(j->first,j->second);
 660         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 661                 MoveAfter(j->first,j->second);
 662         BuildISupport();
 663         return true;
 664 }
 665
 666 void InspIRCd::DoOneIteration(bool process_module_sockets)
 667 {
 668         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 669          * Once per loop iteration is pleanty.
 670          */
 671         OLDTIME = TIME;
 672         TIME = time(NULL);
 673
 674         /* Run background module timers every few seconds
 675          * (the docs say modules shouldnt rely on accurate
 676          * timing using this event, so we dont have to
 677          * time this exactly).
 678          */
 679         if (TIME != OLDTIME)
 680         {
 681                 if (TIME < OLDTIME)
 682                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 683                 if ((TIME % 3600) == 0)
 684                 {
 685                         irc::whowas::MaintainWhoWas(this, TIME);
 686                 }
 687                 Timers->TickTimers(TIME);
 688                 this->DoBackgroundUserStuff(TIME);
 689
 690                 if ((TIME % 5) == 0)
 691                 {
 692                         XLines->expire_lines();
 693                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 694                         Timers->TickMissedTimers(TIME);
 695                 }
 696         }
 697
 698         /* Call the socket engine to wait on the active
 699          * file descriptors. The socket engine has everything's
 700          * descriptors in its list... dns, modules, users,
 701          * servers... so its nice and easy, just one call.
 702          * This will cause any read or write events to be
 703          * dispatched to their handlers.
 704          */
 705         SE->DispatchEvents();
 706 }
 707
 708 bool InspIRCd::IsIdent(const char* n)
 709 {
 710         if (!n || !*n)
 711                 return false;
 712
 713         for (char* i = (char*)n; *i; i++)
 714         {
 715                 if ((*i >= 'A') && (*i <= '}'))
 716                 {
 717                         continue;
 718                 }
 719                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 720                 {
 721                         continue;
 722                 }
 723                 return false;
 724         }
 725         return true;
 726 }
 727
 728
 729 int InspIRCd::Run()
 730 {
 731         while (true)
 732         {
 733                 DoOneIteration(true);
 734         }
 735         /* This is never reached -- we hope! */
 736         return 0;
 737 }
 738
 739 /**********************************************************************************/
 740
 741 /**
 742  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 743  */
 744
 745 int main(int argc, char** argv)
 746 {
 747         SI = new InspIRCd(argc, argv);
 748         SI->Run();
 749         delete SI;
 750         return 0;
 751 }
 752
 753 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 754  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 755  * registration timeout maximum seconds)
 756  */
 757 bool InspIRCd::AllModulesReportReady(userrec* user)
 758 {
 759         if (!Config->global_implementation[I_OnCheckReady])
 760                 return true;
 761
 762         for (int i = 0; i <= this->GetModuleCount(); i++)
 763         {
 764                 if (Config->implement_lists[i][I_OnCheckReady])
 765                 {
 766                         int res = modules[i]->OnCheckReady(user);
 767                         if (!res)
 768                                 return false;
 769                 }
 770         }
 771         return true;
 772 }
 773
 774 int InspIRCd::GetModuleCount()
 775 {
 776         return this->ModCount;
 777 }
 778
 779 time_t InspIRCd::Time()
 780 {
 781         return TIME;
 782 }
 783
 784 bool FileLogger::Readable()
 785 {
 786         return false;
 787 }
 788
 789 void FileLogger::HandleEvent(EventType et, int errornum)
 790 {
 791         this->WriteLogLine("");
 792         ServerInstance->SE->DelFd(this);
 793 }
 794
 795 void FileLogger::WriteLogLine(const std::string &line)
 796 {
 797         if (line.length())
 798                 buffer.append(line);
 799
 800         if (log)
 801         {
 802                 int written = fprintf(log,"%s",buffer.c_str());
 803                 if ((written >= 0) && (written < (int)buffer.length()))
 804                 {
 805                         buffer.erase(0, buffer.length());
 806                         ServerInstance->SE->AddFd(this);
 807                 }
 808                 else if (written == -1)
 809                 {
 810                         if (errno == EAGAIN)
 811                                 ServerInstance->SE->AddFd(this);
 812                 }
 813                 else
 814                 {
 815                         /* Wrote the whole buffer, and no need for write callback */
 816                         buffer = "";
 817                 }
 818         }
 819         if (writeops++ % 20)
 820         {
 821                 fflush(log);
 822         }
 823 }
 824
 825 void FileLogger::Close()
 826 {
 827         if (log)
 828         {
 829                 int flags = fcntl(fileno(log), F_GETFL, 0);
 830                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
 831                 if (buffer.size())
 832                         fprintf(log,"%s",buffer.c_str());
 833                 fflush(log);
 834                 fclose(log);
 835         }
 836         buffer = "";
 837         ServerInstance->SE->DelFd(this);
 838 }
 839
 840 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
 841 {
 842         irc::sockets::NonBlocking(fileno(log));
 843         this->SetFd(fileno(log));
 844         buffer = "";
 845 }
 846
 847 FileLogger::~FileLogger()
 848 {
 849         this->Close();
 850 }
 851