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, peavey\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->time_delta = 0;
 197         this->next_call = this->TIME + 3;
 198         srand(this->TIME);
 199         this->Log(DEBUG,"*** InspIRCd starting up!");
 200         if (!ServerConfig::FileExists(CONFIG_FILE))
 201         {
 202                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 203                 this->Log(DEFAULT,"main: no config");
 204                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 205                 Exit(ERROR);
 206         }
 207         *this->LogFileName = 0;
 208         if (argc > 1) {
 209                 for (int i = 1; i < argc; i++)
 210                 {
 211                         if (!strcmp(argv[i],"-nofork"))
 212                         {
 213                                 Config->nofork = true;
 214                         }
 215                         else if(!strcmp(argv[i],"-debug"))
 216                         {
 217                                 Config->forcedebug = true;
 218                         }
 219                         else if(!strcmp(argv[i],"-nolog"))
 220                         {
 221                                 Config->writelog = false;
 222                         }
 223                         else if (!strcmp(argv[i],"-wait"))
 224                         {
 225                                 sleep(6);
 226                         }
 227                         else if (!strcmp(argv[i],"-logfile"))
 228                         {
 229                                 if (argc > i+1)
 230                                 {
 231                                         strlcpy(LogFileName,argv[i+1],MAXBUF);
 232                                         printf("LOG: Setting logfile to %s\n",LogFileName);
 233                                 }
 234                                 else
 235                                 {
 236                                         printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
 237                                         Exit(ERROR);
 238                                 }
 239                                 i++;
 240                         }
 241                         else
 242                         {
 243                                 printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-logfile <filename>]\n",argv[0]);
 244                                 Exit(ERROR);
 245                         }
 246                 }
 247         }
 248
 249         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 250
 251         this->OpenLog(argv, argc);
 252         this->stats = new serverstats();
 253         this->Parser = new CommandParser(this);
 254         this->Timers = new TimerManager();
 255         this->XLines = new XLineManager(this);
 256         Config->ClearStack();
 257         Config->Read(true, NULL);
 258         this->CheckRoot();
 259         this->Modes = new ModeParser(this);
 260         this->AddServerName(Config->ServerName);
 261         CheckDie();
 262         InitializeDisabledCommands(Config->DisabledCommands, this);
 263         stats->BoundPortCount = BindPorts(true, found_ports);
 264
 265         for(int t = 0; t < 255; t++)
 266                 Config->global_implementation[t] = 0;
 267
 268         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 269
 270         printf("\n");
 271         this->SetSignals();
 272         if (!Config->nofork)
 273         {
 274                 if (!this->DaemonSeed())
 275                 {
 276                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 277                         Exit(ERROR);
 278                 }
 279         }
 280
 281         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 282          * initialize the socket engine.
 283          */
 284         SocketEngineFactory* SEF = new SocketEngineFactory();
 285         SE = SEF->Create(this);
 286         delete SEF;
 287
 288         this->Res = new DNS(this);
 289
 290         this->LoadAllModules();
 291         /* Just in case no modules were loaded - fix for bug #101 */
 292         this->BuildISupport();
 293
 294         if ((stats->BoundPortCount == 0) && (found_ports > 0))
 295         {
 296                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 297                 Exit(ERROR);
 298         }
 299
 300         if (stats->BoundPortCount != (unsigned int)found_ports)
 301         {
 302                 printf("\nWARNING: Not all your client ports could be bound --\n         starting anyway with %ld of %d client ports bound.\n", stats->BoundPortCount, found_ports);
 303         }
 304
 305         /* Add the listening sockets used for client inbound connections
 306          * to the socket engine
 307          */
 308         this->Log(DEBUG,"%d listeners",stats->BoundPortCount);
 309         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 310         {
 311                 this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]->GetFd());
 312                 if (!SE->AddFd(Config->openSockfd[count]))
 313                 {
 314                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 315                         Exit(ERROR);
 316                 }
 317         }
 318
 319         if (!Config->nofork)
 320         {
 321                 if (kill(getppid(), SIGTERM) == -1)
 322                         printf("Error killing parent process: %s\n",strerror(errno));
 323                 fclose(stdin);
 324                 fclose(stderr);
 325                 fclose(stdout);
 326         }
 327
 328         printf("\nInspIRCd is now running!\n");
 329
 330         this->WritePID(Config->PID);
 331 }
 332
 333 std::string InspIRCd::GetVersionString()
 334 {
 335         char versiondata[MAXBUF];
 336         char dnsengine[] = "singlethread-object";
 337         if (*Config->CustomVersion)
 338         {
 339                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 340         }
 341         else
 342         {
 343                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 344         }
 345         return versiondata;
 346 }
 347
 348 char* InspIRCd::ModuleError()
 349 {
 350         return MODERR;
 351 }
 352
 353 void InspIRCd::EraseFactory(int j)
 354 {
 355         int v = 0;
 356         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 357         {
 358                 if (v == j)
 359                 {
 360                         delete *t;
 361                         factory.erase(t);
 362                         factory.push_back(NULL);
 363                         return;
 364                 }
 365                 v++;
 366         }
 367 }
 368
 369 void InspIRCd::EraseModule(int j)
 370 {
 371         int v1 = 0;
 372         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 373         {
 374                 if (v1 == j)
 375                 {
 376                         DELETE(*m);
 377                         modules.erase(m);
 378                         modules.push_back(NULL);
 379                         break;
 380                 }
 381                 v1++;
 382         }
 383         int v2 = 0;
 384         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 385         {
 386                 if (v2 == j)
 387                 {
 388                        Config->module_names.erase(v);
 389                        break;
 390                 }
 391                 v2++;
 392         }
 393
 394 }
 395
 396 void InspIRCd::MoveTo(std::string modulename,int slot)
 397 {
 398         unsigned int v2 = 256;
 399         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 400         {
 401                 if (Config->module_names[v] == modulename)
 402                 {
 403                         // found an instance, swap it with the item at the end
 404                         v2 = v;
 405                         break;
 406                 }
 407         }
 408         if ((v2 != (unsigned int)slot) && (v2 < 256))
 409         {
 410                 // Swap the module names over
 411                 Config->module_names[v2] = Config->module_names[slot];
 412                 Config->module_names[slot] = modulename;
 413                 // now swap the module factories
 414                 ircd_module* temp = factory[v2];
 415                 factory[v2] = factory[slot];
 416                 factory[slot] = temp;
 417                 // now swap the module objects
 418                 Module* temp_module = modules[v2];
 419                 modules[v2] = modules[slot];
 420                 modules[slot] = temp_module;
 421                 // now swap the implement lists (we dont
 422                 // need to swap the global or recount it)
 423                 for (int n = 0; n < 255; n++)
 424                 {
 425                         char x = Config->implement_lists[v2][n];
 426                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 427                         Config->implement_lists[slot][n] = x;
 428                 }
 429         }
 430         else
 431         {
 432                 this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 433         }
 434 }
 435
 436 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 437 {
 438         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 439         {
 440                 if (Config->module_names[v] == after)
 441                 {
 442                         MoveTo(modulename, v);
 443                         return;
 444                 }
 445         }
 446 }
 447
 448 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 449 {
 450         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 451         {
 452                 if (Config->module_names[v] == before)
 453                 {
 454                         if (v > 0)
 455                         {
 456                                 MoveTo(modulename, v-1);
 457                         }
 458                         else
 459                         {
 460                                 MoveTo(modulename, v);
 461                         }
 462                         return;
 463                 }
 464         }
 465 }
 466
 467 void InspIRCd::MoveToFirst(std::string modulename)
 468 {
 469         MoveTo(modulename,0);
 470 }
 471
 472 void InspIRCd::MoveToLast(std::string modulename)
 473 {
 474         MoveTo(modulename,this->GetModuleCount());
 475 }
 476
 477 void InspIRCd::BuildISupport()
 478 {
 479         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 480         std::stringstream v;
 481         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 482         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 483         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 484         Config->data005 = v.str();
 485         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 486 }
 487
 488 bool InspIRCd::UnloadModule(const char* filename)
 489 {
 490         std::string filename_str = filename;
 491         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 492         {
 493                 if (Config->module_names[j] == filename_str)
 494                 {
 495                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 496                         {
 497                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 498                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 499                                 return false;
 500                         }
 501                         /* Give the module a chance to tidy out all its metadata */
 502                         for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++)
 503                         {
 504                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 505                         }
 506                         for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++)
 507                         {
 508                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 509                         }
 510
 511                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 512
 513                         for(int t = 0; t < 255; t++)
 514                         {
 515                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 516                         }
 517
 518                         /* We have to renumber implement_lists after unload because the module numbers change!
 519                          */
 520                         for(int j2 = j; j2 < 254; j2++)
 521                         {
 522                                 for(int t = 0; t < 255; t++)
 523                                 {
 524                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 525                                 }
 526                         }
 527
 528                         // found the module
 529                         this->Log(DEBUG,"Removing dependent commands...");
 530                         Parser->RemoveCommands(filename);
 531                         this->Log(DEBUG,"Deleting module...");
 532                         this->EraseModule(j);
 533                         this->Log(DEBUG,"Erasing module entry...");
 534                         this->EraseFactory(j);
 535                         this->Log(DEFAULT,"Module %s unloaded",filename);
 536                         this->ModCount--;
 537                         BuildISupport();
 538                         return true;
 539                 }
 540         }
 541         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 542         snprintf(MODERR,MAXBUF,"Module not loaded");
 543         return false;
 544 }
 545
 546 bool InspIRCd::LoadModule(const char* filename)
 547 {
 548         /* Do we have a glob pattern in the filename?
 549          * The user wants to load multiple modules which
 550          * match the pattern.
 551          */
 552         if (strchr(filename,'*') || (strchr(filename,'?')))
 553         {
 554                 int n_match = 0;
 555                 DIR* library = opendir(Config->ModPath);
 556                 if (library)
 557                 {
 558                         /* Try and locate and load all modules matching the pattern */
 559                         dirent* entry = NULL;
 560                         while ((entry = readdir(library)))
 561                         {
 562                                 if (this->MatchText(entry->d_name, filename))
 563                                 {
 564                                         if (!this->LoadModule(entry->d_name))
 565                                                 n_match++;
 566                                 }
 567                         }
 568                         closedir(library);
 569                 }
 570                 /* Loadmodule will now return false if any one of the modules failed
 571                  * to load (but wont abort when it encounters a bad one) and when 1 or
 572                  * more modules were actually loaded.
 573                  */
 574                 return (n_match > 0);
 575         }
 576
 577         char modfile[MAXBUF];
 578         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 579         std::string filename_str = filename;
 580
 581         if (!ServerConfig::DirValid(modfile))
 582         {
 583                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 584                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 585                 return false;
 586         }
 587         this->Log(DEBUG,"Loading module: %s",modfile);
 588
 589         if (ServerConfig::FileExists(modfile))
 590         {
 591
 592                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 593                 {
 594                         if (Config->module_names[j] == filename_str)
 595                         {
 596                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 597                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 598                                 return false;
 599                         }
 600                 }
 601                 try
 602                 {
 603                         ircd_module* a = new ircd_module(this, modfile);
 604                         factory[this->ModCount+1] = a;
 605                         if (factory[this->ModCount+1]->LastError())
 606                         {
 607                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 608                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 609                                 return false;
 610                         }
 611                         if ((long)factory[this->ModCount+1]->factory != -1)
 612                         {
 613                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 614
 615                                 Version v = m->GetVersion();
 616
 617                                 if (v.API != API_VERSION)
 618                                 {
 619                                         delete m;
 620                                         delete a;
 621                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 622                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 623                                         return false;
 624                                 }
 625                                 else
 626                                 {
 627                                         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]"));
 628                                 }
 629
 630                                 modules[this->ModCount+1] = m;
 631                                 /* save the module and the module's classfactory, if
 632                                  * this isnt done, random crashes can occur :/ */
 633                                 Config->module_names.push_back(filename);
 634
 635                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 636                                 for(int t = 0; t < 255; t++)
 637                                         x[t] = 0;
 638
 639                                 modules[this->ModCount+1]->Implements(x);
 640
 641                                 for(int t = 0; t < 255; t++)
 642                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 643                         }
 644                         else
 645                         {
 646                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 647                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 648                                 return false;
 649                         }
 650                 }
 651                 catch (ModuleException& modexcept)
 652                 {
 653                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 654                         snprintf(MODERR,MAXBUF,"Factory function threw an exception: %s",modexcept.GetReason());
 655                         return false;
 656                 }
 657         }
 658         else
 659         {
 660                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 661                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 662                 return false;
 663         }
 664         this->ModCount++;
 665         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 666         // now work out which modules, if any, want to move to the back of the queue,
 667         // and if they do, move them there.
 668         std::vector<std::string> put_to_back;
 669         std::vector<std::string> put_to_front;
 670         std::map<std::string,std::string> put_before;
 671         std::map<std::string,std::string> put_after;
 672         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 673         {
 674                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 675                         put_to_back.push_back(Config->module_names[j]);
 676                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 677                         put_to_front.push_back(Config->module_names[j]);
 678                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 679                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 680                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 681                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 682         }
 683         for (unsigned int j = 0; j < put_to_back.size(); j++)
 684                 MoveToLast(put_to_back[j]);
 685         for (unsigned int j = 0; j < put_to_front.size(); j++)
 686                 MoveToFirst(put_to_front[j]);
 687         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 688                 MoveBefore(j->first,j->second);
 689         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 690                 MoveAfter(j->first,j->second);
 691         BuildISupport();
 692         return true;
 693 }
 694
 695 void InspIRCd::DoOneIteration(bool process_module_sockets)
 696 {
 697         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 698          * Once per loop iteration is pleanty.
 699          */
 700         OLDTIME = TIME;
 701         TIME = time(NULL);
 702
 703         /* Run background module timers every few seconds
 704          * (the docs say modules shouldnt rely on accurate
 705          * timing using this event, so we dont have to
 706          * time this exactly).
 707          */
 708         if (TIME != OLDTIME)
 709         {
 710                 if (TIME < OLDTIME)
 711                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 712                 if ((TIME % 3600) == 0)
 713                 {
 714                         irc::whowas::MaintainWhoWas(this, TIME);
 715                 }
 716                 Timers->TickTimers(TIME);
 717                 this->DoBackgroundUserStuff(TIME);
 718
 719                 if ((TIME % 5) == 0)
 720                 {
 721                         XLines->expire_lines();
 722                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 723                         Timers->TickMissedTimers(TIME);
 724                 }
 725         }
 726
 727         /* Call the socket engine to wait on the active
 728          * file descriptors. The socket engine has everything's
 729          * descriptors in its list... dns, modules, users,
 730          * servers... so its nice and easy, just one call.
 731          * This will cause any read or write events to be
 732          * dispatched to their handlers.
 733          */
 734         SE->DispatchEvents();
 735 }
 736
 737 bool InspIRCd::IsIdent(const char* n)
 738 {
 739         if (!n || !*n)
 740                 return false;
 741
 742         for (char* i = (char*)n; *i; i++)
 743         {
 744                 if ((*i >= 'A') && (*i <= '}'))
 745                 {
 746                         continue;
 747                 }
 748                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 749                 {
 750                         continue;
 751                 }
 752                 return false;
 753         }
 754         return true;
 755 }
 756
 757
 758 int InspIRCd::Run()
 759 {
 760         while (true)
 761         {
 762                 DoOneIteration(true);
 763         }
 764         /* This is never reached -- we hope! */
 765         return 0;
 766 }
 767
 768 /**********************************************************************************/
 769
 770 /**
 771  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 772  */
 773
 774 int main(int argc, char** argv)
 775 {
 776         SI = new InspIRCd(argc, argv);
 777         SI->Run();
 778         delete SI;
 779         return 0;
 780 }
 781
 782 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 783  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 784  * registration timeout maximum seconds)
 785  */
 786 bool InspIRCd::AllModulesReportReady(userrec* user)
 787 {
 788         if (!Config->global_implementation[I_OnCheckReady])
 789                 return true;
 790
 791         for (int i = 0; i <= this->GetModuleCount(); i++)
 792         {
 793                 if (Config->implement_lists[i][I_OnCheckReady])
 794                 {
 795                         int res = modules[i]->OnCheckReady(user);
 796                         if (!res)
 797                                 return false;
 798                 }
 799         }
 800         return true;
 801 }
 802
 803 int InspIRCd::GetModuleCount()
 804 {
 805         return this->ModCount;
 806 }
 807
 808 time_t InspIRCd::Time(bool delta)
 809 {
 810         if (delta)
 811                 return TIME + time_delta;
 812         return TIME;
 813 }
 814
 815 int InspIRCd::SetTimeDelta(int delta)
 816 {
 817         int old = time_delta;
 818         time_delta += delta;
 819         this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old);
 820         return old;
 821 }
 822
 823 bool FileLogger::Readable()
 824 {
 825         return false;
 826 }
 827
 828 void FileLogger::HandleEvent(EventType et, int errornum)
 829 {
 830         this->WriteLogLine("");
 831         ServerInstance->SE->DelFd(this);
 832 }
 833
 834 void FileLogger::WriteLogLine(const std::string &line)
 835 {
 836         if (line.length())
 837                 buffer.append(line);
 838
 839         if (log)
 840         {
 841                 int written = fprintf(log,"%s",buffer.c_str());
 842                 if ((written >= 0) && (written < (int)buffer.length()))
 843                 {
 844                         buffer.erase(0, buffer.length());
 845                         ServerInstance->SE->AddFd(this);
 846                 }
 847                 else if (written == -1)
 848                 {
 849                         if (errno == EAGAIN)
 850                                 ServerInstance->SE->AddFd(this);
 851                 }
 852                 else
 853                 {
 854                         /* Wrote the whole buffer, and no need for write callback */
 855                         buffer = "";
 856                 }
 857         }
 858         if (writeops++ % 20)
 859         {
 860                 fflush(log);
 861         }
 862 }
 863
 864 void FileLogger::Close()
 865 {
 866         if (log)
 867         {
 868                 int flags = fcntl(fileno(log), F_GETFL, 0);
 869                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
 870                 if (buffer.size())
 871                         fprintf(log,"%s",buffer.c_str());
 872                 fflush(log);
 873                 fclose(log);
 874         }
 875         buffer = "";
 876         ServerInstance->SE->DelFd(this);
 877 }
 878
 879 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
 880 {
 881         irc::sockets::NonBlocking(fileno(log));
 882         this->SetFd(fileno(log));
 883         buffer = "";
 884 }
 885
 886 FileLogger::~FileLogger()
 887 {
 888         this->Close();
 889 }
 890