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 <dirent.h>
  34 #include <exception>
  35 #include <fstream>
  36 #include "modules.h"
  37 #include "mode.h"
  38 #include "xline.h"
  39 #include "socketengine.h"
  40 #include "inspircd_se_config.h"
  41 #include "socket.h"
  42 #include "typedefs.h"
  43 #include "command_parse.h"
  44 #include <dlfcn.h>
  45
  46 using irc::sockets::NonBlocking;
  47 using irc::sockets::Blocking;
  48 using irc::sockets::insp_ntoa;
  49 using irc::sockets::insp_inaddr;
  50 using irc::sockets::insp_sockaddr;
  51
  52 InspIRCd* SI = NULL;
  53
  54 void InspIRCd::AddServerName(const std::string &servername)
  55 {
  56         this->Log(DEBUG,"Adding server name: %s",servername.c_str());
  57
  58         if(find(servernames.begin(), servernames.end(), servername) == servernames.end())
  59                 servernames.push_back(servername); /* Wasn't already there. */
  60 }
  61
  62 const char* InspIRCd::FindServerNamePtr(const std::string &servername)
  63 {
  64         servernamelist::iterator iter = find(servernames.begin(), servernames.end(), servername);
  65
  66         if(iter == servernames.end())
  67         {
  68                 AddServerName(servername);
  69                 iter = --servernames.end();
  70         }
  71
  72         return iter->c_str();
  73 }
  74
  75 bool InspIRCd::FindServerName(const std::string &servername)
  76 {
  77         return (find(servernames.begin(), servernames.end(), servername) != servernames.end());
  78 }
  79
  80 void InspIRCd::Exit(int status)
  81 {
  82         exit (status);
  83 }
  84
  85 void InspIRCd::Start()
  86 {
  87         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
  88         printf("(C) ChatSpike Development team.\033[0m\n\n");
  89         printf("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, jamie\033[0m\n");
  90         printf("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
  91         printf("Name concept:\t\t\033[1;32mLord_Zathras\033[0m\n\n");
  92 }
  93
  94 void InspIRCd::Rehash(int status)
  95 {
  96         SI->WriteOpers("Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(CONFIG_FILE));
  97         fclose(SI->Config->log_file);
  98         SI->OpenLog(NULL,0);
  99         SI->Config->Read(false,NULL);
 100         FOREACH_MOD_I(SI,I_OnRehash,OnRehash(""));
 101 }
 102
 103 void InspIRCd::SetSignals()
 104 {
 105         signal(SIGALRM, SIG_IGN);
 106         signal(SIGHUP, InspIRCd::Rehash);
 107         signal(SIGPIPE, SIG_IGN);
 108         signal(SIGTERM, InspIRCd::Exit);
 109         signal(SIGCHLD, SIG_IGN);
 110 }
 111
 112 bool InspIRCd::DaemonSeed()
 113 {
 114         int childpid;
 115         if ((childpid = fork ()) < 0)
 116                 return false;
 117         else if (childpid > 0)
 118         {
 119                 /* We wait here for the child process to kill us,
 120                  * so that the shell prompt doesnt come back over
 121                  * the output.
 122                  * Sending a kill with a signal of 0 just checks
 123                  * if the child pid is still around. If theyre not,
 124                  * they threw an error and we should give up.
 125                  */
 126                 while (kill(childpid, 0) != -1)
 127                         sleep(1);
 128                 exit(ERROR);
 129         }
 130         setsid ();
 131         umask (007);
 132         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 133
 134         rlimit rl;
 135         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 136         {
 137                 this->Log(DEFAULT,"Failed to getrlimit()!");
 138                 return false;
 139         }
 140         else
 141         {
 142                 rl.rlim_cur = rl.rlim_max;
 143                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 144                         this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 145         }
 146
 147         return true;
 148 }
 149
 150 void InspIRCd::WritePID(const std::string &filename)
 151 {
 152         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 153         if (*(fname.begin()) != '/')
 154         {
 155                 std::string::size_type pos;
 156                 std::string confpath = CONFIG_FILE;
 157                 if ((pos = confpath.find("/inspircd.conf")) != std::string::npos)
 158                 {
 159                         /* Leaves us with just the path */
 160                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 161                 }
 162         }
 163         std::ofstream outfile(fname.c_str());
 164         if (outfile.is_open())
 165         {
 166                 outfile << getpid();
 167                 outfile.close();
 168         }
 169         else
 170         {
 171                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 172                 this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 173                 Exit(0);
 174         }
 175 }
 176
 177 std::string InspIRCd::GetRevision()
 178 {
 179         return REVISION;
 180 }
 181
 182 InspIRCd::InspIRCd(int argc, char** argv)
 183         : 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)
 184 {
 185         int found_ports = 0;
 186
 187         modules.resize(255);
 188         factory.resize(255);
 189
 190         this->Config = new ServerConfig(this);
 191         this->Config->opertypes.clear();
 192         this->Config->operclass.clear();
 193         this->SNO = new SnomaskManager(this);
 194         this->Start();
 195         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 196         this->next_call = this->TIME + 3;
 197         srand(this->TIME);
 198         this->Log(DEBUG,"*** InspIRCd starting up!");
 199         if (!ServerConfig::FileExists(CONFIG_FILE))
 200         {
 201                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 202                 this->Log(DEFAULT,"main: no config");
 203                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 204                 Exit(ERROR);
 205         }
 206         *this->LogFileName = 0;
 207         if (argc > 1) {
 208                 for (int i = 1; i < argc; i++)
 209                 {
 210                         if (!strcmp(argv[i],"-nofork"))
 211                         {
 212                                 Config->nofork = true;
 213                         }
 214                         else if(!strcmp(argv[i],"-debug"))
 215                         {
 216                                 Config->forcedebug = true;
 217                         }
 218                         else if(!strcmp(argv[i],"-nolog"))
 219                         {
 220                                 Config->writelog = false;
 221                         }
 222                         else if (!strcmp(argv[i],"-wait"))
 223                         {
 224                                 sleep(6);
 225                         }
 226                         else if (!strcmp(argv[i],"-logfile"))
 227                         {
 228                                 if (argc > i+1)
 229                                 {
 230                                         strlcpy(LogFileName,argv[i+1],MAXBUF);
 231                                         printf("LOG: Setting logfile to %s\n",LogFileName);
 232                                 }
 233                                 else
 234                                 {
 235                                         printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
 236                                         Exit(ERROR);
 237                                 }
 238                                 i++;
 239                         }
 240                         else
 241                         {
 242                                 printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-logfile <filename>]\n",argv[0]);
 243                                 Exit(ERROR);
 244                         }
 245                 }
 246         }
 247
 248         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 249
 250         this->OpenLog(argv, argc);
 251         this->stats = new serverstats();
 252         this->Parser = new CommandParser(this);
 253         this->Timers = new TimerManager();
 254         this->XLines = new XLineManager(this);
 255         Config->ClearStack();
 256         Config->Read(true, NULL);
 257         this->CheckRoot();
 258         this->Modes = new ModeParser(this);
 259         this->AddServerName(Config->ServerName);
 260         CheckDie();
 261         InitializeDisabledCommands(Config->DisabledCommands, this);
 262         stats->BoundPortCount = BindPorts(true, found_ports);
 263
 264         for(int t = 0; t < 255; t++)
 265                 Config->global_implementation[t] = 0;
 266
 267         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 268
 269         printf("\n");
 270         this->SetSignals();
 271         if (!Config->nofork)
 272         {
 273                 if (!this->DaemonSeed())
 274                 {
 275                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 276                         Exit(ERROR);
 277                 }
 278         }
 279
 280         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 281          * initialize the socket engine.
 282          */
 283         SocketEngineFactory* SEF = new SocketEngineFactory();
 284         SE = SEF->Create(this);
 285         delete SEF;
 286
 287         this->Res = new DNS(this);
 288
 289         this->LoadAllModules();
 290         /* Just in case no modules were loaded - fix for bug #101 */
 291         this->BuildISupport();
 292
 293         if ((stats->BoundPortCount == 0) && (found_ports > 0))
 294         {
 295                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 296                 Exit(ERROR);
 297         }
 298
 299         if (stats->BoundPortCount != (unsigned int)found_ports)
 300         {
 301                 printf("\nWARNING: Not all your ports could be bound -- starting anyway with %ld of %d ports bound.\n", stats->BoundPortCount, found_ports);
 302         }
 303
 304         /* Add the listening sockets used for client inbound connections
 305          * to the socket engine
 306          */
 307         this->Log(DEBUG,"%d listeners",stats->BoundPortCount);
 308         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 309         {
 310                 this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]->GetFd());
 311                 if (!SE->AddFd(Config->openSockfd[count]))
 312                 {
 313                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 314                         Exit(ERROR);
 315                 }
 316         }
 317
 318         if (!Config->nofork)
 319         {
 320                 if (kill(getppid(), SIGTERM) == -1)
 321                         printf("Error killing parent process: %s\n",strerror(errno));
 322                 fclose(stdin);
 323                 fclose(stderr);
 324                 fclose(stdout);
 325         }
 326
 327         printf("\nInspIRCd is now running!\n");
 328
 329         this->WritePID(Config->PID);
 330 }
 331
 332 std::string InspIRCd::GetVersionString()
 333 {
 334         char versiondata[MAXBUF];
 335         char dnsengine[] = "singlethread-object";
 336         if (*Config->CustomVersion)
 337         {
 338                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 339         }
 340         else
 341         {
 342                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 343         }
 344         return versiondata;
 345 }
 346
 347 char* InspIRCd::ModuleError()
 348 {
 349         return MODERR;
 350 }
 351
 352 void InspIRCd::EraseFactory(int j)
 353 {
 354         int v = 0;
 355         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 356         {
 357                 if (v == j)
 358                 {
 359                         delete *t;
 360                         factory.erase(t);
 361                         factory.push_back(NULL);
 362                         return;
 363                 }
 364                 v++;
 365         }
 366 }
 367
 368 void InspIRCd::EraseModule(int j)
 369 {
 370         int v1 = 0;
 371         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 372         {
 373                 if (v1 == j)
 374                 {
 375                         DELETE(*m);
 376                         modules.erase(m);
 377                         modules.push_back(NULL);
 378                         break;
 379                 }
 380                 v1++;
 381         }
 382         int v2 = 0;
 383         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 384         {
 385                 if (v2 == j)
 386                 {
 387                        Config->module_names.erase(v);
 388                        break;
 389                 }
 390                 v2++;
 391         }
 392
 393 }
 394
 395 void InspIRCd::MoveTo(std::string modulename,int slot)
 396 {
 397         unsigned int v2 = 256;
 398         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 399         {
 400                 if (Config->module_names[v] == modulename)
 401                 {
 402                         // found an instance, swap it with the item at the end
 403                         v2 = v;
 404                         break;
 405                 }
 406         }
 407         if ((v2 != (unsigned int)slot) && (v2 < 256))
 408         {
 409                 // Swap the module names over
 410                 Config->module_names[v2] = Config->module_names[slot];
 411                 Config->module_names[slot] = modulename;
 412                 // now swap the module factories
 413                 ircd_module* temp = factory[v2];
 414                 factory[v2] = factory[slot];
 415                 factory[slot] = temp;
 416                 // now swap the module objects
 417                 Module* temp_module = modules[v2];
 418                 modules[v2] = modules[slot];
 419                 modules[slot] = temp_module;
 420                 // now swap the implement lists (we dont
 421                 // need to swap the global or recount it)
 422                 for (int n = 0; n < 255; n++)
 423                 {
 424                         char x = Config->implement_lists[v2][n];
 425                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 426                         Config->implement_lists[slot][n] = x;
 427                 }
 428         }
 429         else
 430         {
 431                 this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 432         }
 433 }
 434
 435 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 436 {
 437         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 438         {
 439                 if (Config->module_names[v] == after)
 440                 {
 441                         MoveTo(modulename, v);
 442                         return;
 443                 }
 444         }
 445 }
 446
 447 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 448 {
 449         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 450         {
 451                 if (Config->module_names[v] == before)
 452                 {
 453                         if (v > 0)
 454                         {
 455                                 MoveTo(modulename, v-1);
 456                         }
 457                         else
 458                         {
 459                                 MoveTo(modulename, v);
 460                         }
 461                         return;
 462                 }
 463         }
 464 }
 465
 466 void InspIRCd::MoveToFirst(std::string modulename)
 467 {
 468         MoveTo(modulename,0);
 469 }
 470
 471 void InspIRCd::MoveToLast(std::string modulename)
 472 {
 473         MoveTo(modulename,this->GetModuleCount());
 474 }
 475
 476 void InspIRCd::BuildISupport()
 477 {
 478         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 479         std::stringstream v;
 480         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 481         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 482         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 483         Config->data005 = v.str();
 484         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 485 }
 486
 487 bool InspIRCd::UnloadModule(const char* filename)
 488 {
 489         std::string filename_str = filename;
 490         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 491         {
 492                 if (Config->module_names[j] == filename_str)
 493                 {
 494                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 495                         {
 496                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 497                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 498                                 return false;
 499                         }
 500                         /* Give the module a chance to tidy out all its metadata */
 501                         for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++)
 502                         {
 503                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 504                         }
 505                         for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++)
 506                         {
 507                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 508                         }
 509
 510                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 511
 512                         for(int t = 0; t < 255; t++)
 513                         {
 514                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 515                         }
 516
 517                         /* We have to renumber implement_lists after unload because the module numbers change!
 518                          */
 519                         for(int j2 = j; j2 < 254; j2++)
 520                         {
 521                                 for(int t = 0; t < 255; t++)
 522                                 {
 523                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 524                                 }
 525                         }
 526
 527                         // found the module
 528                         this->Log(DEBUG,"Removing dependent commands...");
 529                         Parser->RemoveCommands(filename);
 530                         this->Log(DEBUG,"Deleting module...");
 531                         this->EraseModule(j);
 532                         this->Log(DEBUG,"Erasing module entry...");
 533                         this->EraseFactory(j);
 534                         this->Log(DEFAULT,"Module %s unloaded",filename);
 535                         this->ModCount--;
 536                         BuildISupport();
 537                         return true;
 538                 }
 539         }
 540         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 541         snprintf(MODERR,MAXBUF,"Module not loaded");
 542         return false;
 543 }
 544
 545 bool InspIRCd::LoadModule(const char* filename)
 546 {
 547         /* Do we have a glob pattern in the filename?
 548          * The user wants to load multiple modules which
 549          * match the pattern.
 550          */
 551         if (strchr(filename,'*') || (strchr(filename,'?')))
 552         {
 553                 int n_match = 0;
 554                 DIR* library = opendir(Config->ModPath);
 555                 if (library)
 556                 {
 557                         /* Try and locate and load all modules matching the pattern */
 558                         dirent* entry = NULL;
 559                         while ((entry = readdir(library)))
 560                         {
 561                                 if (this->MatchText(entry->d_name, filename))
 562                                 {
 563                                         if (!this->LoadModule(entry->d_name))
 564                                                 n_match++;
 565                                 }
 566                         }
 567                         closedir(library);
 568                 }
 569                 /* Loadmodule will now return false if any one of the modules failed
 570                  * to load (but wont abort when it encounters a bad one) and when 1 or
 571                  * more modules were actually loaded.
 572                  */
 573                 return (n_match > 0);
 574         }
 575
 576         char modfile[MAXBUF];
 577         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 578         std::string filename_str = filename;
 579
 580         if (!ServerConfig::DirValid(modfile))
 581         {
 582                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 583                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 584                 return false;
 585         }
 586         this->Log(DEBUG,"Loading module: %s",modfile);
 587
 588         if (ServerConfig::FileExists(modfile))
 589         {
 590
 591                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 592                 {
 593                         if (Config->module_names[j] == filename_str)
 594                         {
 595                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 596                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 597                                 return false;
 598                         }
 599                 }
 600                 try
 601                 {
 602                         ircd_module* a = new ircd_module(this, modfile);
 603                         factory[this->ModCount+1] = a;
 604                         if (factory[this->ModCount+1]->LastError())
 605                         {
 606                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 607                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 608                                 return false;
 609                         }
 610                         if ((long)factory[this->ModCount+1]->factory != -1)
 611                         {
 612                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 613
 614                                 Version v = m->GetVersion();
 615
 616                                 if (v.API != API_VERSION)
 617                                 {
 618                                         delete m;
 619                                         delete a;
 620                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 621                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 622                                         return false;
 623                                 }
 624                                 else
 625                                 {
 626                                         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]"));
 627                                 }
 628
 629                                 modules[this->ModCount+1] = m;
 630                                 /* save the module and the module's classfactory, if
 631                                  * this isnt done, random crashes can occur :/ */
 632                                 Config->module_names.push_back(filename);
 633
 634                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 635                                 for(int t = 0; t < 255; t++)
 636                                         x[t] = 0;
 637
 638                                 modules[this->ModCount+1]->Implements(x);
 639
 640                                 for(int t = 0; t < 255; t++)
 641                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 642                         }
 643                         else
 644                         {
 645                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 646                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 647                                 return false;
 648                         }
 649                 }
 650                 catch (ModuleException& modexcept)
 651                 {
 652                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 653                         snprintf(MODERR,MAXBUF,"Factory function threw an exception: %s",modexcept.GetReason());
 654                         return false;
 655                 }
 656         }
 657         else
 658         {
 659                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 660                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 661                 return false;
 662         }
 663         this->ModCount++;
 664         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 665         // now work out which modules, if any, want to move to the back of the queue,
 666         // and if they do, move them there.
 667         std::vector<std::string> put_to_back;
 668         std::vector<std::string> put_to_front;
 669         std::map<std::string,std::string> put_before;
 670         std::map<std::string,std::string> put_after;
 671         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 672         {
 673                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 674                         put_to_back.push_back(Config->module_names[j]);
 675                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 676                         put_to_front.push_back(Config->module_names[j]);
 677                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 678                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 679                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 680                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 681         }
 682         for (unsigned int j = 0; j < put_to_back.size(); j++)
 683                 MoveToLast(put_to_back[j]);
 684         for (unsigned int j = 0; j < put_to_front.size(); j++)
 685                 MoveToFirst(put_to_front[j]);
 686         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 687                 MoveBefore(j->first,j->second);
 688         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 689                 MoveAfter(j->first,j->second);
 690         BuildISupport();
 691         return true;
 692 }
 693
 694 void InspIRCd::DoOneIteration(bool process_module_sockets)
 695 {
 696         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 697          * Once per loop iteration is pleanty.
 698          */
 699         OLDTIME = TIME;
 700         TIME = time(NULL);
 701
 702         /* Run background module timers every few seconds
 703          * (the docs say modules shouldnt rely on accurate
 704          * timing using this event, so we dont have to
 705          * time this exactly).
 706          */
 707         if (TIME != OLDTIME)
 708         {
 709                 if (TIME < OLDTIME)
 710                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 711                 if ((TIME % 3600) == 0)
 712                 {
 713                         irc::whowas::MaintainWhoWas(this, TIME);
 714                 }
 715                 Timers->TickTimers(TIME);
 716                 this->DoBackgroundUserStuff(TIME);
 717
 718                 if ((TIME % 5) == 0)
 719                 {
 720                         XLines->expire_lines();
 721                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 722                         Timers->TickMissedTimers(TIME);
 723                 }
 724         }
 725
 726         /* Call the socket engine to wait on the active
 727          * file descriptors. The socket engine has everything's
 728          * descriptors in its list... dns, modules, users,
 729          * servers... so its nice and easy, just one call.
 730          * This will cause any read or write events to be
 731          * dispatched to their handlers.
 732          */
 733         SE->DispatchEvents();
 734 }
 735
 736 bool InspIRCd::IsIdent(const char* n)
 737 {
 738         if (!n || !*n)
 739                 return false;
 740
 741         for (char* i = (char*)n; *i; i++)
 742         {
 743                 if ((*i >= 'A') && (*i <= '}'))
 744                 {
 745                         continue;
 746                 }
 747                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 748                 {
 749                         continue;
 750                 }
 751                 return false;
 752         }
 753         return true;
 754 }
 755
 756
 757 int InspIRCd::Run()
 758 {
 759         while (true)
 760         {
 761                 DoOneIteration(true);
 762         }
 763         /* This is never reached -- we hope! */
 764         return 0;
 765 }
 766
 767 /**********************************************************************************/
 768
 769 /**
 770  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 771  */
 772
 773 int main(int argc, char** argv)
 774 {
 775         SI = new InspIRCd(argc, argv);
 776         SI->Run();
 777         delete SI;
 778         return 0;
 779 }
 780
 781 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 782  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 783  * registration timeout maximum seconds)
 784  */
 785 bool InspIRCd::AllModulesReportReady(userrec* user)
 786 {
 787         if (!Config->global_implementation[I_OnCheckReady])
 788                 return true;
 789
 790         for (int i = 0; i <= this->GetModuleCount(); i++)
 791         {
 792                 if (Config->implement_lists[i][I_OnCheckReady])
 793                 {
 794                         int res = modules[i]->OnCheckReady(user);
 795                         if (!res)
 796                                 return false;
 797                 }
 798         }
 799         return true;
 800 }
 801
 802 int InspIRCd::GetModuleCount()
 803 {
 804         return this->ModCount;
 805 }
 806
 807 time_t InspIRCd::Time()
 808 {
 809         return TIME;
 810 }
 811
 812 bool FileLogger::Readable()
 813 {
 814         return false;
 815 }
 816
 817 void FileLogger::HandleEvent(EventType et, int errornum)
 818 {
 819         this->WriteLogLine("");
 820         ServerInstance->SE->DelFd(this);
 821 }
 822
 823 void FileLogger::WriteLogLine(const std::string &line)
 824 {
 825         if (line.length())
 826                 buffer.append(line);
 827
 828         if (log)
 829         {
 830                 int written = fprintf(log,"%s",buffer.c_str());
 831                 if ((written >= 0) && (written < (int)buffer.length()))
 832                 {
 833                         buffer.erase(0, buffer.length());
 834                         ServerInstance->SE->AddFd(this);
 835                 }
 836                 else if (written == -1)
 837                 {
 838                         if (errno == EAGAIN)
 839                                 ServerInstance->SE->AddFd(this);
 840                 }
 841                 else
 842                 {
 843                         /* Wrote the whole buffer, and no need for write callback */
 844                         buffer = "";
 845                 }
 846         }
 847         if (writeops++ % 20)
 848         {
 849                 fflush(log);
 850         }
 851 }
 852
 853 void FileLogger::Close()
 854 {
 855         if (log)
 856         {
 857                 int flags = fcntl(fileno(log), F_GETFL, 0);
 858                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
 859                 if (buffer.size())
 860                         fprintf(log,"%s",buffer.c_str());
 861                 fflush(log);
 862                 fclose(log);
 863         }
 864         buffer = "";
 865         ServerInstance->SE->DelFd(this);
 866 }
 867
 868 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
 869 {
 870         irc::sockets::NonBlocking(fileno(log));
 871         this->SetFd(fileno(log));
 872         buffer = "";
 873 }
 874
 875 FileLogger::~FileLogger()
 876 {
 877         this->Close();
 878 }
 879