src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include "configreader.h"
  16 #include <signal.h>
  17 #include <dirent.h>
  18 #include <exception>
  19 #include <fstream>
  20 #include "modules.h"
  21 #include "mode.h"
  22 #include "xline.h"
  23 #include "socketengine.h"
  24 #include "inspircd_se_config.h"
  25 #include "socket.h"
  26 #include "typedefs.h"
  27 #include "command_parse.h"
  28 #include <dlfcn.h>
  29
  30 using irc::sockets::NonBlocking;
  31 using irc::sockets::Blocking;
  32 using irc::sockets::insp_ntoa;
  33 using irc::sockets::insp_inaddr;
  34 using irc::sockets::insp_sockaddr;
  35
  36 InspIRCd* SI = NULL;
  37
  38 void InspIRCd::AddServerName(const std::string &servername)
  39 {
  40         this->Log(DEBUG,"Adding server name: %s",servername.c_str());
  41
  42         if(find(servernames.begin(), servernames.end(), servername) == servernames.end())
  43                 servernames.push_back(servername); /* Wasn't already there. */
  44 }
  45
  46 const char* InspIRCd::FindServerNamePtr(const std::string &servername)
  47 {
  48         servernamelist::iterator iter = find(servernames.begin(), servernames.end(), servername);
  49
  50         if(iter == servernames.end())
  51         {
  52                 AddServerName(servername);
  53                 iter = --servernames.end();
  54         }
  55
  56         return iter->c_str();
  57 }
  58
  59 bool InspIRCd::FindServerName(const std::string &servername)
  60 {
  61         return (find(servernames.begin(), servernames.end(), servername) != servernames.end());
  62 }
  63
  64 void InspIRCd::Exit(int status)
  65 {
  66         exit (status);
  67 }
  68
  69 void InspIRCd::Start()
  70 {
  71         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
  72         printf("(C) InspIRCd Development Team.\033[0m\n\n");
  73         printf("Developers:\t\t\033[1;32mBrain, FrostyCoolSlug, w00t, Om, Special, pippijn, peavey\033[0m\n");
  74         printf("Others:\t\t\t\033[1;32mSee /INFO Output\033[0m\n");
  75 }
  76
  77 void InspIRCd::Rehash(int status)
  78 {
  79         SI->WriteOpers("Rehashing config file %s due to SIGHUP",ServerConfig::CleanFilename(CONFIG_FILE));
  80         fclose(SI->Config->log_file);
  81         SI->OpenLog(NULL,0);
  82         SI->Config->Read(false,NULL);
  83         FOREACH_MOD_I(SI,I_OnRehash,OnRehash(""));
  84 }
  85
  86 void InspIRCd::SetSignals()
  87 {
  88         signal(SIGALRM, SIG_IGN);
  89         signal(SIGHUP, InspIRCd::Rehash);
  90         signal(SIGPIPE, SIG_IGN);
  91         signal(SIGTERM, InspIRCd::Exit);
  92         signal(SIGCHLD, SIG_IGN);
  93 }
  94
  95 bool InspIRCd::DaemonSeed()
  96 {
  97         int childpid;
  98         if ((childpid = fork ()) < 0)
  99                 return false;
 100         else if (childpid > 0)
 101         {
 102                 /* We wait here for the child process to kill us,
 103                  * so that the shell prompt doesnt come back over
 104                  * the output.
 105                  * Sending a kill with a signal of 0 just checks
 106                  * if the child pid is still around. If theyre not,
 107                  * they threw an error and we should give up.
 108                  */
 109                 while (kill(childpid, 0) != -1)
 110                         sleep(1);
 111                 exit(ERROR);
 112         }
 113         setsid ();
 114         umask (007);
 115         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 116
 117         rlimit rl;
 118         if (getrlimit(RLIMIT_CORE, &rl) == -1)
 119         {
 120                 this->Log(DEFAULT,"Failed to getrlimit()!");
 121                 return false;
 122         }
 123         else
 124         {
 125                 rl.rlim_cur = rl.rlim_max;
 126                 if (setrlimit(RLIMIT_CORE, &rl) == -1)
 127                         this->Log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 128         }
 129
 130         return true;
 131 }
 132
 133 void InspIRCd::WritePID(const std::string &filename)
 134 {
 135         std::string fname = (filename.empty() ? "inspircd.pid" : filename);
 136         if (*(fname.begin()) != '/')
 137         {
 138                 std::string::size_type pos;
 139                 std::string confpath = CONFIG_FILE;
 140                 if ((pos = confpath.find("/inspircd.conf")) != std::string::npos)
 141                 {
 142                         /* Leaves us with just the path */
 143                         fname = confpath.substr(0, pos) + std::string("/") + fname;
 144                 }
 145         }
 146         std::ofstream outfile(fname.c_str());
 147         if (outfile.is_open())
 148         {
 149                 outfile << getpid();
 150                 outfile.close();
 151         }
 152         else
 153         {
 154                 printf("Failed to write PID-file '%s', exiting.\n",fname.c_str());
 155                 this->Log(DEFAULT,"Failed to write PID-file '%s', exiting.",fname.c_str());
 156                 Exit(0);
 157         }
 158 }
 159
 160 std::string InspIRCd::GetRevision()
 161 {
 162         return REVISION;
 163 }
 164
 165 InspIRCd::InspIRCd(int argc, char** argv)
 166         : 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)
 167 {
 168         int found_ports = 0;
 169         FailedPortList pl;
 170
 171         modules.resize(255);
 172         factory.resize(255);
 173
 174         this->Config = new ServerConfig(this);
 175         this->Config->opertypes.clear();
 176         this->Config->operclass.clear();
 177         this->SNO = new SnomaskManager(this);
 178         this->Start();
 179         this->TIME = this->OLDTIME = this->startup_time = time(NULL);
 180         this->time_delta = 0;
 181         this->next_call = this->TIME + 3;
 182         srand(this->TIME);
 183         this->Log(DEBUG,"*** InspIRCd starting up!");
 184         if (!ServerConfig::FileExists(CONFIG_FILE))
 185         {
 186                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
 187                 this->Log(DEFAULT,"main: no config");
 188                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
 189                 Exit(ERROR);
 190         }
 191         *this->LogFileName = 0;
 192         if (argc > 1) {
 193                 for (int i = 1; i < argc; i++)
 194                 {
 195                         if (!strcmp(argv[i],"-nofork"))
 196                         {
 197                                 Config->nofork = true;
 198                         }
 199                         else if(!strcmp(argv[i],"-debug"))
 200                         {
 201                                 Config->forcedebug = true;
 202                         }
 203                         else if(!strcmp(argv[i],"-nolog"))
 204                         {
 205                                 Config->writelog = false;
 206                         }
 207                         else if (!strcmp(argv[i],"-wait"))
 208                         {
 209                                 sleep(6);
 210                         }
 211                         else if (!strcmp(argv[i],"-logfile"))
 212                         {
 213                                 if (argc > i+1)
 214                                 {
 215                                         strlcpy(LogFileName,argv[i+1],MAXBUF);
 216                                         printf("LOG: Setting logfile to %s\n",LogFileName);
 217                                 }
 218                                 else
 219                                 {
 220                                         printf("ERROR: The -logfile parameter must be followed by a log file name and path.\n");
 221                                         Exit(ERROR);
 222                                 }
 223                                 i++;
 224                         }
 225                         else
 226                         {
 227                                 printf("Usage: %s [-nofork] [-nolog] [-debug] [-wait] [-logfile <filename>]\n",argv[0]);
 228                                 Exit(ERROR);
 229                         }
 230                 }
 231         }
 232
 233         strlcpy(Config->MyExecutable,argv[0],MAXBUF);
 234
 235         this->OpenLog(argv, argc);
 236         this->stats = new serverstats();
 237         this->Parser = new CommandParser(this);
 238         this->Timers = new TimerManager();
 239         this->XLines = new XLineManager(this);
 240         Config->ClearStack();
 241         Config->Read(true, NULL);
 242         this->CheckRoot();
 243         this->Modes = new ModeParser(this);
 244         this->AddServerName(Config->ServerName);
 245         CheckDie();
 246         InitializeDisabledCommands(Config->DisabledCommands, this);
 247         stats->BoundPortCount = BindPorts(true, found_ports, pl);
 248
 249         for(int t = 0; t < 255; t++)
 250                 Config->global_implementation[t] = 0;
 251
 252         memset(&Config->implement_lists,0,sizeof(Config->implement_lists));
 253
 254         printf("\n");
 255         this->SetSignals();
 256         if (!Config->nofork)
 257         {
 258                 if (!this->DaemonSeed())
 259                 {
 260                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
 261                         Exit(ERROR);
 262                 }
 263         }
 264
 265         /* Because of limitations in kqueue on freebsd, we must fork BEFORE we
 266          * initialize the socket engine.
 267          */
 268         SocketEngineFactory* SEF = new SocketEngineFactory();
 269         SE = SEF->Create(this);
 270         delete SEF;
 271
 272         this->Res = new DNS(this);
 273
 274         this->LoadAllModules();
 275         /* Just in case no modules were loaded - fix for bug #101 */
 276         this->BuildISupport();
 277
 278         if ((stats->BoundPortCount == 0) && (found_ports > 0))
 279         {
 280                 printf("\nERROR: I couldn't bind any ports! Are you sure you didn't start InspIRCd twice?\n");
 281                 Exit(ERROR);
 282         }
 283
 284         if (stats->BoundPortCount != (unsigned int)found_ports)
 285         {
 286                 printf("\nWARNING: Not all your client ports could be bound --\nstarting anyway with %ld of %d client ports bound.\n\n", stats->BoundPortCount, found_ports);
 287                 printf("The following port%s failed to bind:\n", found_ports - stats->BoundPortCount != 1 ? "s" : "");
 288                 int j = 1;
 289                 for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
 290                 {
 291                         printf("%d.\tIP: %s\tPort: %lu\n", j, i->first.empty() ? "<all>" : i->first.c_str(), (unsigned long)i->second);
 292                 }
 293         }
 294
 295         /* Add the listening sockets used for client inbound connections
 296          * to the socket engine
 297          */
 298         this->Log(DEBUG,"%d listeners",stats->BoundPortCount);
 299         for (unsigned long count = 0; count < stats->BoundPortCount; count++)
 300         {
 301                 this->Log(DEBUG,"Add listener: %d",Config->openSockfd[count]->GetFd());
 302                 if (!SE->AddFd(Config->openSockfd[count]))
 303                 {
 304                         printf("\nEH? Could not add listener to socketengine. You screwed up, aborting.\n");
 305                         Exit(ERROR);
 306                 }
 307         }
 308
 309         if (!Config->nofork)
 310         {
 311                 if (kill(getppid(), SIGTERM) == -1)
 312                         printf("Error killing parent process: %s\n",strerror(errno));
 313                 fclose(stdin);
 314                 fclose(stderr);
 315                 fclose(stdout);
 316         }
 317
 318         printf("\nInspIRCd is now running!\n");
 319
 320         this->WritePID(Config->PID);
 321 }
 322
 323 std::string InspIRCd::GetVersionString()
 324 {
 325         char versiondata[MAXBUF];
 326         char dnsengine[] = "singlethread-object";
 327         if (*Config->CustomVersion)
 328         {
 329                 snprintf(versiondata,MAXBUF,"%s %s :%s",VERSION,Config->ServerName,Config->CustomVersion);
 330         }
 331         else
 332         {
 333                 snprintf(versiondata,MAXBUF,"%s %s :%s [FLAGS=%lu,%s,%s]",VERSION,Config->ServerName,SYSTEM,(unsigned long)OPTIMISATION,SE->GetName().c_str(),dnsengine);
 334         }
 335         return versiondata;
 336 }
 337
 338 char* InspIRCd::ModuleError()
 339 {
 340         return MODERR;
 341 }
 342
 343 void InspIRCd::EraseFactory(int j)
 344 {
 345         int v = 0;
 346         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
 347         {
 348                 if (v == j)
 349                 {
 350                         delete *t;
 351                         factory.erase(t);
 352                         factory.push_back(NULL);
 353                         return;
 354                 }
 355                 v++;
 356         }
 357 }
 358
 359 void InspIRCd::EraseModule(int j)
 360 {
 361         int v1 = 0;
 362         for (ModuleList::iterator m = modules.begin(); m!= modules.end(); m++)
 363         {
 364                 if (v1 == j)
 365                 {
 366                         DELETE(*m);
 367                         modules.erase(m);
 368                         modules.push_back(NULL);
 369                         break;
 370                 }
 371                 v1++;
 372         }
 373         int v2 = 0;
 374         for (std::vector<std::string>::iterator v = Config->module_names.begin(); v != Config->module_names.end(); v++)
 375         {
 376                 if (v2 == j)
 377                 {
 378                        Config->module_names.erase(v);
 379                        break;
 380                 }
 381                 v2++;
 382         }
 383
 384 }
 385
 386 void InspIRCd::MoveTo(std::string modulename,int slot)
 387 {
 388         unsigned int v2 = 256;
 389         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 390         {
 391                 if (Config->module_names[v] == modulename)
 392                 {
 393                         // found an instance, swap it with the item at the end
 394                         v2 = v;
 395                         break;
 396                 }
 397         }
 398         if ((v2 != (unsigned int)slot) && (v2 < 256))
 399         {
 400                 // Swap the module names over
 401                 Config->module_names[v2] = Config->module_names[slot];
 402                 Config->module_names[slot] = modulename;
 403                 // now swap the module factories
 404                 ircd_module* temp = factory[v2];
 405                 factory[v2] = factory[slot];
 406                 factory[slot] = temp;
 407                 // now swap the module objects
 408                 Module* temp_module = modules[v2];
 409                 modules[v2] = modules[slot];
 410                 modules[slot] = temp_module;
 411                 // now swap the implement lists (we dont
 412                 // need to swap the global or recount it)
 413                 for (int n = 0; n < 255; n++)
 414                 {
 415                         char x = Config->implement_lists[v2][n];
 416                         Config->implement_lists[v2][n] = Config->implement_lists[slot][n];
 417                         Config->implement_lists[slot][n] = x;
 418                 }
 419         }
 420         else
 421         {
 422                 this->Log(DEBUG,"Move of %s to slot failed!",modulename.c_str());
 423         }
 424 }
 425
 426 void InspIRCd::MoveAfter(std::string modulename, std::string after)
 427 {
 428         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 429         {
 430                 if (Config->module_names[v] == after)
 431                 {
 432                         MoveTo(modulename, v);
 433                         return;
 434                 }
 435         }
 436 }
 437
 438 void InspIRCd::MoveBefore(std::string modulename, std::string before)
 439 {
 440         for (unsigned int v = 0; v < Config->module_names.size(); v++)
 441         {
 442                 if (Config->module_names[v] == before)
 443                 {
 444                         if (v > 0)
 445                         {
 446                                 MoveTo(modulename, v-1);
 447                         }
 448                         else
 449                         {
 450                                 MoveTo(modulename, v);
 451                         }
 452                         return;
 453                 }
 454         }
 455 }
 456
 457 void InspIRCd::MoveToFirst(std::string modulename)
 458 {
 459         MoveTo(modulename,0);
 460 }
 461
 462 void InspIRCd::MoveToLast(std::string modulename)
 463 {
 464         MoveTo(modulename,this->GetModuleCount());
 465 }
 466
 467 void InspIRCd::BuildISupport()
 468 {
 469         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
 470         std::stringstream v;
 471         v << "WALLCHOPS WALLVOICES MODES=" << MAXMODES << " CHANTYPES=# PREFIX=" << this->Modes->BuildPrefixes() << " MAP MAXCHANNELS=" << MAXCHANS << " MAXBANS=60 VBANLIST NICKLEN=" << NICKMAX-1;
 472         v << " CASEMAPPING=rfc1459 STATUSMSG=@%+ CHARSET=ascii TOPICLEN=" << MAXTOPIC << " KICKLEN=" << MAXKICK << " MAXTARGETS=" << Config->MaxTargets << " AWAYLEN=";
 473         v << MAXAWAY << " CHANMODES=" << this->Modes->ChanModes() << " FNC NETWORK=" << Config->Network << " MAXPARA=32";
 474         Config->data005 = v.str();
 475         FOREACH_MOD_I(this,I_On005Numeric,On005Numeric(Config->data005));
 476         Config->Update005();
 477 }
 478
 479 bool InspIRCd::UnloadModule(const char* filename)
 480 {
 481         std::string filename_str = filename;
 482         for (unsigned int j = 0; j != Config->module_names.size(); j++)
 483         {
 484                 if (Config->module_names[j] == filename_str)
 485                 {
 486                         if (modules[j]->GetVersion().Flags & VF_STATIC)
 487                         {
 488                                 this->Log(DEFAULT,"Failed to unload STATIC module %s",filename);
 489                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
 490                                 return false;
 491                         }
 492                         std::pair<int,std::string> intercount = GetInterfaceInstanceCount(modules[j]);
 493                         if (intercount.first > 0)
 494                         {
 495                                 this->Log(DEFAULT,"Failed to unload module %s, being used by %d other(s) via interface '%s'",filename, intercount.first, intercount.second.c_str());
 496                                 snprintf(MODERR,MAXBUF,"Module not unloadable (Still in use by %d other module%s which %s using its interface '%s') -- unload dependent modules first!",
 497                                                 intercount.first,
 498                                                 intercount.first > 1 ? "s" : "",
 499                                                 intercount.first > 1 ? "are" : "is",
 500                                                 intercount.second.c_str());
 501                                 return false;
 502                         }
 503                         /* Give the module a chance to tidy out all its metadata */
 504                         for (chan_hash::iterator c = this->chanlist.begin(); c != this->chanlist.end(); c++)
 505                         {
 506                                 modules[j]->OnCleanup(TYPE_CHANNEL,c->second);
 507                         }
 508                         for (user_hash::iterator u = this->clientlist.begin(); u != this->clientlist.end(); u++)
 509                         {
 510                                 modules[j]->OnCleanup(TYPE_USER,u->second);
 511                         }
 512
 513                         /* Tidy up any dangling resolvers */
 514                         this->Res->CleanResolvers(modules[j]);
 515
 516                         FOREACH_MOD_I(this,I_OnUnloadModule,OnUnloadModule(modules[j],Config->module_names[j]));
 517
 518                         for(int t = 0; t < 255; t++)
 519                         {
 520                                 Config->global_implementation[t] -= Config->implement_lists[j][t];
 521                         }
 522
 523                         /* We have to renumber implement_lists after unload because the module numbers change!
 524                          */
 525                         for(int j2 = j; j2 < 254; j2++)
 526                         {
 527                                 for(int t = 0; t < 255; t++)
 528                                 {
 529                                         Config->implement_lists[j2][t] = Config->implement_lists[j2+1][t];
 530                                 }
 531                         }
 532
 533                         // found the module
 534                         this->Log(DEBUG,"Removing dependent commands...");
 535                         Parser->RemoveCommands(filename);
 536                         this->Log(DEBUG,"Deleting module...");
 537                         this->EraseModule(j);
 538                         this->Log(DEBUG,"Erasing module entry...");
 539                         this->EraseFactory(j);
 540                         this->Log(DEFAULT,"Module %s unloaded",filename);
 541                         this->ModCount--;
 542                         BuildISupport();
 543                         return true;
 544                 }
 545         }
 546         this->Log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
 547         snprintf(MODERR,MAXBUF,"Module not loaded");
 548         return false;
 549 }
 550
 551 bool InspIRCd::LoadModule(const char* filename)
 552 {
 553         /* Do we have a glob pattern in the filename?
 554          * The user wants to load multiple modules which
 555          * match the pattern.
 556          */
 557         if (strchr(filename,'*') || (strchr(filename,'?')))
 558         {
 559                 int n_match = 0;
 560                 DIR* library = opendir(Config->ModPath);
 561                 if (library)
 562                 {
 563                         /* Try and locate and load all modules matching the pattern */
 564                         dirent* entry = NULL;
 565                         while ((entry = readdir(library)))
 566                         {
 567                                 if (this->MatchText(entry->d_name, filename))
 568                                 {
 569                                         if (!this->LoadModule(entry->d_name))
 570                                                 n_match++;
 571                                 }
 572                         }
 573                         closedir(library);
 574                 }
 575                 /* Loadmodule will now return false if any one of the modules failed
 576                  * to load (but wont abort when it encounters a bad one) and when 1 or
 577                  * more modules were actually loaded.
 578                  */
 579                 return (n_match > 0);
 580         }
 581
 582         char modfile[MAXBUF];
 583         snprintf(modfile,MAXBUF,"%s/%s",Config->ModPath,filename);
 584         std::string filename_str = filename;
 585
 586         if (!ServerConfig::DirValid(modfile))
 587         {
 588                 this->Log(DEFAULT,"Module %s is not within the modules directory.",modfile);
 589                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
 590                 return false;
 591         }
 592         this->Log(DEBUG,"Loading module: %s",modfile);
 593
 594         if (ServerConfig::FileExists(modfile))
 595         {
 596
 597                 for (unsigned int j = 0; j < Config->module_names.size(); j++)
 598                 {
 599                         if (Config->module_names[j] == filename_str)
 600                         {
 601                                 this->Log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
 602                                 snprintf(MODERR,MAXBUF,"Module already loaded");
 603                                 return false;
 604                         }
 605                 }
 606                 try
 607                 {
 608                         ircd_module* a = new ircd_module(this, modfile);
 609                         factory[this->ModCount+1] = a;
 610                         if (factory[this->ModCount+1]->LastError())
 611                         {
 612                                 this->Log(DEFAULT,"Unable to load %s: %s",modfile,factory[this->ModCount+1]->LastError());
 613                                 snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[this->ModCount+1]->LastError());
 614                                 return false;
 615                         }
 616                         if ((long)factory[this->ModCount+1]->factory != -1)
 617                         {
 618                                 Module* m = factory[this->ModCount+1]->factory->CreateModule(this);
 619
 620                                 Version v = m->GetVersion();
 621
 622                                 if (v.API != API_VERSION)
 623                                 {
 624                                         delete m;
 625                                         delete a;
 626                                         this->Log(DEFAULT,"Unable to load %s: Incorrect module API version: %d (our version: %d)",modfile,v.API,API_VERSION);
 627                                         snprintf(MODERR,MAXBUF,"Loader/Linker error: Incorrect module API version: %d (our version: %d)",v.API,API_VERSION);
 628                                         return false;
 629                                 }
 630                                 else
 631                                 {
 632                                         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]"));
 633                                 }
 634
 635                                 modules[this->ModCount+1] = m;
 636                                 /* save the module and the module's classfactory, if
 637                                  * this isnt done, random crashes can occur :/ */
 638                                 Config->module_names.push_back(filename);
 639
 640                                 char* x = &Config->implement_lists[this->ModCount+1][0];
 641                                 for(int t = 0; t < 255; t++)
 642                                         x[t] = 0;
 643
 644                                 modules[this->ModCount+1]->Implements(x);
 645
 646                                 for(int t = 0; t < 255; t++)
 647                                         Config->global_implementation[t] += Config->implement_lists[this->ModCount+1][t];
 648                         }
 649                         else
 650                         {
 651                                 this->Log(DEFAULT,"Unable to load %s",modfile);
 652                                 snprintf(MODERR,MAXBUF,"Factory function failed: Probably missing init_module() entrypoint.");
 653                                 return false;
 654                         }
 655                 }
 656                 catch (CoreException& modexcept)
 657                 {
 658                         this->Log(DEFAULT,"Unable to load %s: ",modfile,modexcept.GetReason());
 659                         snprintf(MODERR,MAXBUF,"Factory function of %s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 660                         return false;
 661                 }
 662         }
 663         else
 664         {
 665                 this->Log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
 666                 snprintf(MODERR,MAXBUF,"Module file could not be found");
 667                 return false;
 668         }
 669         this->ModCount++;
 670         FOREACH_MOD_I(this,I_OnLoadModule,OnLoadModule(modules[this->ModCount],filename_str));
 671         // now work out which modules, if any, want to move to the back of the queue,
 672         // and if they do, move them there.
 673         std::vector<std::string> put_to_back;
 674         std::vector<std::string> put_to_front;
 675         std::map<std::string,std::string> put_before;
 676         std::map<std::string,std::string> put_after;
 677         for (unsigned int j = 0; j < Config->module_names.size(); j++)
 678         {
 679                 if (modules[j]->Prioritize() == PRIORITY_LAST)
 680                         put_to_back.push_back(Config->module_names[j]);
 681                 else if (modules[j]->Prioritize() == PRIORITY_FIRST)
 682                         put_to_front.push_back(Config->module_names[j]);
 683                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_BEFORE)
 684                         put_before[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 685                 else if ((modules[j]->Prioritize() & 0xFF) == PRIORITY_AFTER)
 686                         put_after[Config->module_names[j]] = Config->module_names[modules[j]->Prioritize() >> 8];
 687         }
 688         for (unsigned int j = 0; j < put_to_back.size(); j++)
 689                 MoveToLast(put_to_back[j]);
 690         for (unsigned int j = 0; j < put_to_front.size(); j++)
 691                 MoveToFirst(put_to_front[j]);
 692         for (std::map<std::string,std::string>::iterator j = put_before.begin(); j != put_before.end(); j++)
 693                 MoveBefore(j->first,j->second);
 694         for (std::map<std::string,std::string>::iterator j = put_after.begin(); j != put_after.end(); j++)
 695                 MoveAfter(j->first,j->second);
 696         BuildISupport();
 697         return true;
 698 }
 699
 700 void InspIRCd::DoOneIteration(bool process_module_sockets)
 701 {
 702         static rusage ru;
 703
 704         /* time() seems to be a pretty expensive syscall, so avoid calling it too much.
 705          * Once per loop iteration is pleanty.
 706          */
 707         OLDTIME = TIME;
 708         TIME = time(NULL);
 709
 710         /* Run background module timers every few seconds
 711          * (the docs say modules shouldnt rely on accurate
 712          * timing using this event, so we dont have to
 713          * time this exactly).
 714          */
 715         if (TIME != OLDTIME)
 716         {
 717                 if (TIME < OLDTIME)
 718                         WriteOpers("*** \002EH?!\002 -- Time is flowing BACKWARDS in this dimension! Clock drifted backwards %d secs.",abs(OLDTIME-TIME));
 719                 if ((TIME % 3600) == 0)
 720                 {
 721                         irc::whowas::MaintainWhoWas(this, TIME);
 722                 }
 723                 Timers->TickTimers(TIME);
 724                 this->DoBackgroundUserStuff(TIME);
 725
 726                 if ((TIME % 5) == 0)
 727                 {
 728                         XLines->expire_lines();
 729                         FOREACH_MOD_I(this,I_OnBackgroundTimer,OnBackgroundTimer(TIME));
 730                         Timers->TickMissedTimers(TIME);
 731                 }
 732
 733                 if (!getrusage(0, &ru))
 734                 {
 735                         gettimeofday(&this->stats->LastSampled, NULL);
 736                         this->stats->LastCPU = ru.ru_utime;
 737                 }
 738         }
 739
 740         /* Call the socket engine to wait on the active
 741          * file descriptors. The socket engine has everything's
 742          * descriptors in its list... dns, modules, users,
 743          * servers... so its nice and easy, just one call.
 744          * This will cause any read or write events to be
 745          * dispatched to their handlers.
 746          */
 747         SE->DispatchEvents();
 748 }
 749
 750 bool InspIRCd::IsIdent(const char* n)
 751 {
 752         if (!n || !*n)
 753                 return false;
 754
 755         for (char* i = (char*)n; *i; i++)
 756         {
 757                 if ((*i >= 'A') && (*i <= '}'))
 758                 {
 759                         continue;
 760                 }
 761                 if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
 762                 {
 763                         continue;
 764                 }
 765                 return false;
 766         }
 767         return true;
 768 }
 769
 770
 771 int InspIRCd::Run()
 772 {
 773         while (true)
 774         {
 775                 DoOneIteration(true);
 776         }
 777         /* This is never reached -- we hope! */
 778         return 0;
 779 }
 780
 781 /**********************************************************************************/
 782
 783 /**
 784  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
 785  */
 786
 787 int main(int argc, char** argv)
 788 {
 789         SI = new InspIRCd(argc, argv);
 790         SI->Run();
 791         delete SI;
 792         return 0;
 793 }
 794
 795 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
 796  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
 797  * registration timeout maximum seconds)
 798  */
 799 bool InspIRCd::AllModulesReportReady(userrec* user)
 800 {
 801         if (!Config->global_implementation[I_OnCheckReady])
 802                 return true;
 803
 804         for (int i = 0; i <= this->GetModuleCount(); i++)
 805         {
 806                 if (Config->implement_lists[i][I_OnCheckReady])
 807                 {
 808                         int res = modules[i]->OnCheckReady(user);
 809                         if (!res)
 810                                 return false;
 811                 }
 812         }
 813         return true;
 814 }
 815
 816 int InspIRCd::GetModuleCount()
 817 {
 818         return this->ModCount;
 819 }
 820
 821 time_t InspIRCd::Time(bool delta)
 822 {
 823         if (delta)
 824                 return TIME + time_delta;
 825         return TIME;
 826 }
 827
 828 int InspIRCd::SetTimeDelta(int delta)
 829 {
 830         int old = time_delta;
 831         time_delta += delta;
 832         this->Log(DEBUG, "Time delta set to %d (was %d)", time_delta, old);
 833         return old;
 834 }
 835
 836 void InspIRCd::AddLocalClone(userrec* user)
 837 {
 838         clonemap::iterator x = local_clones.find(user->GetIPString());
 839         if (x != local_clones.end())
 840                 x->second++;
 841         else
 842                 local_clones[user->GetIPString()] = 1;
 843 }
 844
 845 void InspIRCd::AddGlobalClone(userrec* user)
 846 {
 847         clonemap::iterator y = global_clones.find(user->GetIPString());
 848         if (y != global_clones.end())
 849                 y->second++;
 850         else
 851                 global_clones[user->GetIPString()] = 1;
 852 }
 853
 854 int InspIRCd::GetTimeDelta()
 855 {
 856         return time_delta;
 857 }
 858
 859 bool FileLogger::Readable()
 860 {
 861         return false;
 862 }
 863
 864 void FileLogger::HandleEvent(EventType et, int errornum)
 865 {
 866         this->WriteLogLine("");
 867         ServerInstance->SE->DelFd(this);
 868 }
 869
 870 void FileLogger::WriteLogLine(const std::string &line)
 871 {
 872         if (line.length())
 873                 buffer.append(line);
 874
 875         if (log)
 876         {
 877                 int written = fprintf(log,"%s",buffer.c_str());
 878                 if ((written >= 0) && (written < (int)buffer.length()))
 879                 {
 880                         buffer.erase(0, buffer.length());
 881                         ServerInstance->SE->AddFd(this);
 882                 }
 883                 else if (written == -1)
 884                 {
 885                         if (errno == EAGAIN)
 886                                 ServerInstance->SE->AddFd(this);
 887                 }
 888                 else
 889                 {
 890                         /* Wrote the whole buffer, and no need for write callback */
 891                         buffer = "";
 892                 }
 893         }
 894         if (writeops++ % 20)
 895         {
 896                 fflush(log);
 897         }
 898 }
 899
 900 void FileLogger::Close()
 901 {
 902         if (log)
 903         {
 904                 int flags = fcntl(fileno(log), F_GETFL, 0);
 905                 fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
 906                 if (buffer.size())
 907                         fprintf(log,"%s",buffer.c_str());
 908                 fflush(log);
 909                 fclose(log);
 910         }
 911         buffer = "";
 912         ServerInstance->SE->DelFd(this);
 913 }
 914
 915 FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile) : ServerInstance(Instance), log(logfile), writeops(0)
 916 {
 917         irc::sockets::NonBlocking(fileno(log));
 918         this->SetFd(fileno(log));
 919         buffer = "";
 920 }
 921
 922 FileLogger::~FileLogger()
 923 {
 924         this->Close();
 925 }
 926