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